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Патент USA US3077321

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E0!) AND DESIRE FOR SERVICING MULTI-STATION
UOIL WINDING MAG'HINES
Filed April M, 1.85%
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3,077,311
ammo!) AND DEVICE 590R SERVICING MULTI-STATION
GOIL WIWOING MACHINES
Filed April 14, 1958
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3,077,311
WHO!) AND DEVICE FOR $ERVICING MULTI-STATION
CQIL WINDING MACHINES
Filed April 14, 1958
5 ShBB‘S’SbOOt 5
United‘ States intent
Patentodlii‘eh. ‘l2, sass
1
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3,077,311
fabrication of several ditferent types of yarn must he made
larger than is preferable for most ‘economical operation.
It is therefore another object of my invention to or ‘ii
METHOD AND DEVICE FOR SERVICING MULTI
STATION COIL WINDING MACHINES
Stefan Fiirst, Monchen-Gladbach, Germany, assignor to
Walter‘ Reiners, Monchen-Gladbach, Germany
Filed, Apr. 14, 1958,-Ser. No. 728,139
Claims priority, application Germany Apr. 15, 1957
the above-mentioned limitation and disadvantage.
For this purpose, and in accordance with a further fess
ture of my invention, the travel speed of the servicing unit
is controlled ‘not only in accordance with the particular
25 Claims. (Cl. 242-455)
type of servicing operation required at a time, but is also
controlled and modi?ed in dependence upon the traveling
My invention relates to multi-station coil winding ma 10
direction
ci?c feature
'of the
relating
servicing
to the
unit.
just-mentioned
' According toimprovement,
a more
chines for re-winding relatively small yarn packages, such
as the spinning cops as they come from the spinning ma
the servicing device is caused to travel in one direction,
chine, into larger yarn packages. In a more particular
for example from the left toward the right, on an idle re»
aspect, my invention relates to the sequential servicing of
turn path in which no servicing work is performed, and
the winding stations by means of a servicing unit when
active
this
return
forward
movement
travel ofisthe
given
servicing
a greater
unit. speed than
ever it becomes necessary for that unit to eliminatestop
page conditions in a station as may be caused by yarn
breakage or depletion of the yarn-supply coil.
However, the invention is also applicable to advantage
in coil winding machines in‘ which the fault or stoppage
Multi-station machines with a servicing unit common
removing servicing unit travels back and forth and is in
to a number of stations have previously been disclosed 20 active working condition in both traveling directions.
in my copending applications Serial No. 675,677, ?led
August 1, 1957, now abandoned and Serial No. 691,632,
?led October 22, 1957; and the present invention also re
lates to improvements in machines of the type disclosed
and claimed in said applications.
The automatic servicing unit of a multiastation ma
chine, capable of successively cooperating with the in
dividual winding stations, is provided with knotting me
Such an operation is preferable when fabricating yarns of
a greater frequency of yarn breakages.
The servicing unit, in most cases, is called upon to per
form different types of servicing operations successively.
Accordingly, the operating or traveling speed of the unit
can be made dilferent depending upon the type of servic~
ing operation to be performed. For example, the servicn
ing unit, while traveling, must not only perform work re
chanisms which, in the event of yarn breakage or deple
quired by its own traveling motion, but may be called
tion of a supply coil, locate the two yarn ends of the take 30 upon to simultaneously perform a searching or feeling
up spool and yarn-supply coil, then pass the yarn ends to
operation for determining at which particular winding
a knotter which ties them together, whereafter the winding
station the servicing unit must enter into operation; and
station is again placed into operation. Since the servic
ing unit is rather expensive, it is important to fully utilize it
to best advantage. This is possible only if the idling
period during which the servicing unit travels from wind~
ing station to winding station or vice versa, and during
which it'passes inactively by winding stations that do not
require servicing at that time, is kept at a minimum.
It is therefore an object of my invention to improve the 40
servicing operations from the just-mentioned viewpoint,
thus providing for better utilization and increased effi
ciency of the servicing unit.
‘
To this end and in accordance with a feature of my in
for that purpose, the traveling speed of the servicing unit
is preferably slowed down if only the elimination of yarn
breakage is required. However, it may also happen that
the servicing unit must be completely arrested because
a particular winding station calls for an exchange of yarn
supply coils which requires a subsequent yarn-end search- ‘
ing and knotting operation;
.
The various types of operation required of the servicing
unit may be the following: The travel motion may have
to be reversed; the travel may have to be completely
stopped.
The yarn ends of a broken yarn may have to
be searched and must be conveyed to the knotter, then
vention the traveling speed of the servicing unit is modi 45 placed into the knotter prior to placing the knotter into
?ed during operation in dependence upon the particular
operation; the yarn ends protruding from the knotter may
type of servicing operation to be performed at a time.
have to be cut olf, the tied knot may have to be checked;
According to a more speci?c feature of the invention the,
the starting of the winding'operation in the winding sta
servicing unit, when called upon to merely eliminate yarn
tion and the return of the-fault-responsively de?ected yarn
breakage, is moved more slowly than during yarn-end 50 guard
may have to‘be initiated or effected; and ultimately
searching activity, but, if desired, at a speed greater than
the servicing unit must perform a switching operation in
that prevailing during coil-exchanging operation which
order to initiate its continued travel. These different types
requires not only a coil exchange but also a subsequent
of servicing work, mentioned by way of example, may re
tying together of yarn ends.
quire respectively different operating speeds. For exam
In certain cases, particularly where yarns of good uni
ple, when checking the tied knot, the servicing device may
formity, such as those of cellulose derivations, wool, ny
already-start to continue its travel at slow speed, or it may
lon, silk or the like, are to be wound, it is advantageous
run somewhat faster than during the knotting operation.
to have the servicing device travel in active condition
This type of differentiation in the speed, of the servicing
only from one side toward the other of the array of wind
unit makes it possible to have the relatively complicated
ing stations, because with such operation a return of the 00 and expensive servicing device operate in combination
servicing device at a certain moment, for example at the
with the largest possible number of winding stations.
moment when a coil exchange is required in a particular
Since the traveling speed of the servicing: unit is rated to
winding station, can be more readily secured. For this
require shortest time for each particular type of servicing
purpose, it has previously been proposed to have the knot
operation, a particularly high degree of efficiency and best
ting or coiloexchanging devices travel on an endless path
utilization of the servicing unit is attained.
about the coil winding machine, or to have the coil wind
According to a further feature of the invention, the
ing stations travel on an endless path along the knotting
servicing unit is provided with switching means which
or coil-exchanging devices. Such machines, however,
maybe located at the winding stations or‘ at the servicing
have the disadvantage that the limits of the operating
unit itself, and which are in active condition in one travel
speed are ?xed when the machine is built, for example ‘in
ing direction of the servicing unit but are inactive in the
dependence upon a ?xed number of winding stations.
Furthermore, the tolerance ranges required to permit the
opposite traveling direction. This is of advantage if the
travel of the servicing unit is always to commence at the
3
8,077,811
?rst winding station and is to be terminated at a given
other winding station. However, it is also within the
scope of the invention, to provide the servicing unit with
switching devices which perform their on and o? opera
tion in both traveling directions of the servicing unit.
The above~mentioned and more speci?c objects, advan
tages and features of my invention will be apparent from,
and will be mentioned in, the following description in
conjunction with the drawings showing, by way of exam~
13 while reciprocating the yarn in the axial direction of
the spool for the purpose of producing a‘ cross-wound
yarn package. The yarn F comes from a supply coil 113
and passes through a yarn tensioner 16 to the yarn guid
ing drum 11.
In FIG. 2, the supply coil 14 is shown by dot-anchdash
lines in the position occupied when the coil is being un
wound. The supply coil 14 is carried by a pivotally
mounted thorn 67 which can be turned about its pivot
ple, several embodiments of multi-station coil winding 10 so
as to be located in the end portion of a trough 15.
machines designed and operating in accordance with the
In this position of thorn 67, a supply coil 14 arriving
invention. On the drawings:
from above in the trough 15 is automatically speared up
on the thorn. Thereafter, a spring 79 (FIG. 6) auto
matically returns the thorn 67 into the unwinding posi~
FIG. 2 is a cross section through one of the winding
stations according to FIG. I, with a servicing tender be 15 tion. Located between the yarn tensioner 16 and the
yarn guiding drum 11 is a yarn guard 17 which continu~
ing located at that station, the enclosure of the machine
ously tests the operation for presence of the yarn F and
being shown cut-off to reveal the interior.
which turns clockwise in the event of yarn failure. A
FIG. 3 shows a detail of a supporting and suction tube
double-armed lever 18, 19 is fastened to the yarn guard
which forms part of the same machine.
20 17 in the vicinity of the pivot axis. The fault-responsive
FIG. 4 is a schematic front view of another embodi
pivoting motion of the guard 17 in the clockwise direc
ment of a complete multi-station winding machine which
tion causes the winding station to be stopped in the
is provided with a drive of a type different from that in
FIG. 1 is a schematic and simpli?ed front view, from
the servicing side, of a multi-station winding machine.
the embodiment of FIGS. 1 to 3.
FIG. 5 is a part-sectional cross section of a winding
station in the machine of FIG. 4, the servicing tender be
ing located at this station and the enclosure being shown
cut away.
FIG. 5A is a view of an enlarged detail taken from the
left of FIG. 5 and in the same direction as the view of
FIG. 14.
FIGS. 6 and 7 illustrate details of a coil exchanging
mechanism on larger scale.
FIG. 8 is a sectional side view of another embodiment
of a machine for winding cross-wound yarn packages.
FIGS. 9, l0 and ll show a lateral view, front view and 35
top view respectively of a travel-reversing switching de
vice that forms part of the machine shown in FIG. 8.
FIGS. 12 and 13 illustrate a top view and a lateral view
known manner by lifting the take-up spool 13 off the
guiding drum 11 and braking the supply coil 14. ‘Since
the mechanism required for such stopping operation is
known as such it is not illustrated in order not to obscure
the components essential to the invention proper. Lever
arm 18 forms a switching segment, and arm 19 serves for
resetting the yarn guard 17.
I
The thread guard 17 is essentially a feeler which is nor
mally spring biased into engagement with the taut por
tion of yarn F extending between tensioner 16 and guid
ing drum 11. The thread guard 17 is pivoted at 17a and
is rigidly connected with an arm 19.
When the yarn
portion between tensioner 16 and guiding drum 11 is ab
sent, either due to yarn breakage or to exhaustion of the
supply coil 14, the guard 17 turns clockwise from the dot‘
and-dash position to the full-line position, thus placing its
respectively of. a switching device located at each individ 40 arm 19 into the travelling path of the servicing unit or
tender 5 which, while travelling longitudinally along a
ual winding station of the same machine; and
FIG. 14 is a schematic total view of a multi-station
winding machine according to FIG. 8, seen from the side
of its servicing tender.
certain number of winding stations, passes by the indi
vidual station here being described. As described, the
tender is provided with yarn-end ?nding and knotting de
FIG. 14A is an enlarged view of a portion of FIG. 14.
FIG. 15 represents a plan view from above onto rod
114 and related parts of FIG. 8.
The same reference characters are used in all illustra
vices which, in the event of the above-mentioned trouble,
re-establish the proper operating condition of the wind
ing station before the tender continues its travel to the
tions for similar components respectively.
In the machine illustrated in FIGS. 1 to 3, two lateral
The lateral standards 1 and 2 of the machine frame
structure are connected with each other not only by the
tubular carrier 4 but also by a bottom rail 20 (FIGS. 1,
2), a horizontal carrier 21 for the tensioners 16, and an
upper tubular rail 22 (FIG. 2). Mounted on the upper
rail 22 is an arm 23 extending in a vertical plane. A
standards 1 and 2 of the machine frame or carrier struc'
ture are connected with each other by a tubular horizon~
tal carrier 4. Mounted above the carrier 4 are a number
of individual coil winding stations 3 along which a servic
ing tender 5 may travel. The tender 5 carries the servic
ing devices required for eliminating faults and stoppages
of the coil winding operation in the respective winding
stations.
A motor 6 drives, by means of a worm gear
transmission 7, 7a, two endless chains 8 and 9 (FIG. 2).
The chain 8 serves to entrain the tender 5 along the ma
chine. The chain 9 serves for driving the servicing de
vices of the tender 5. Conventional reversing or limit
switches can be used to reverse the motor at the travel
limits of the tender. Note in this relation switch 87, 88
of FIG. 5, described below.
A blower 10 (FIG. I) communicates with the interior
of the tubular carrier 4 and produces a vacuum pressure
therein.
_
The individual winding stations are each provided with
next following station.
‘
‘
supporting member 159 (FIGS. 1, 2) serves for bracing
the tubular carrier 4.
The tender 5 has running wheels 24 which roll along
the carrier 4. Rollers 24a joumalled’ on the tender 5
serve to guide the tender along the bottom rail 20. At
least one of the two wheels 24 can be pulled off its shaft;
and the tender 5 can then be lifted out of the assembly.
For this purpose, the tender is turned about the axis of
the bottom rail 20 and can then be lifted past the upper
rail 22. The insertion of the tender is effected in the
opposite manner. For facilitating such removal or in
sertion, the last location 3a (FIG. 1) on the multi-station
machine may be left vacant or the individual winding
station located at this point can be made removable.
Mounted on tender 5, at the servicing side thereof,
a yarn guiding drum 11 (FIG. 2) against which rests a
in the range of thread guard 17 is a switch arm 25 (FIG.
take-up spool or winder means 13. The spool 13 is jour 70 2) which is kept in approximately vertical position by a
nalled in a frame 12 pivoted at 12a so that su?icient pres
pulling spring 26. Switch arm 25 is fastened to a shaft
27 which carries a crank 28. Rotating motion of switch
sure and friction is produced between spool 13 and guid
arm 25 thus causes the crank 28 to entrain a linking rod
ing drum 11 under the weight of the spool and the frame.
29 and a stop pawl 30 in the upward or downward direc
The yarn guiding drum 11 passes the yarn F onto the spool
tion. The motion of stop pawl 30 is also imparted to a
3,077,311
5
,
latch 31. When latch 31 is thus moved downwardly, it
center bore of boss 51 and arrests the tender 5 in front
can enter into the center bore of a boss 51 on carrier 4,
of the winding station, while the operation of that station
is also stopped. Now the step~down transmission 57 is
placed in rotation by the continuously rotating chain 9.
thus arresting the tender and latching it to the tubular
carrier 4. The pawl 30 and the latch 31 cooperate with
a cam disc 32 which has a cam notch 34 into which the
Transmission 57 then acts through chain 58, spur gear
59, slip clutch 60, shaft 61, and worm 62 to drive the
pawl 30 can enter, whereby the pawl arrests the cam
disc. Cam disc 32 has a cam groove 33 and a dog 35.
cam disc 32 in the direction identi?ed in FIG. 2 by an
in a given rotational position of groove 33, a control
arrow. A free-wheeling mechanism in slip clutch 60 and
lever 36 carrying a spur-gear segment 37 can enter into
its spur gear 59 permits rotation of cam disc 32 in the
the groove. Segment 37 meshes with a pinion 38 which 10 direction of the arrow during the active travel run of the
is connected with a suction tube 39 for conveying the
tender 5, but prevents rotation in the opposite rotational
yarn end to be found and seized.
direction, namely during return travel of the tender. The
Linked to the control lever 36 is a driving tappet 40
control lever 36 can now drop into the cam groove 33
(FIG. 2) for a knotting device 41. The dog 35 of cam
and entrains the spur gear segment 37 counter-clockwise,
disc 32 cooperates with a projection 43 of a control lever 15 thus rotating the pinion 38 clockwise. The suction tube
42 so that, during passage of dog 35, the lever 42 is
39 fastened to pinion 38 now turns from its lowermost
shifted counter-clockwise about its pivot ‘and then pushes
(not illustrated) position upwardly. Since at this time
a return tappet 45, in opposition to a pressure spring 44,
the suction channel 48 of conduit 52 is in communication
against the return lever arm 18. When dog 35 passes
with the opening 50 of the tubular carrier 4 at the loca
beyond the projection 43. the control lever 42 returns 20 tion of the winding station being served by the tender,
to its illustrated position.
the vacuum is effective to produce a current of suction
schematically shown at 46 (FIG. 2) is a conveying
air at the nozzle end of suction tube 39. This air current
arm which is pivoted on the tender 5. At the startof
sucks the free yarn end of the take-up spool 13 into the
the yarn-end ?nding operation, the arm 46 turns from
tube 39. For this purpose, the take-up spool 13 is pref
the uppermost position, shown by a dot-and-dash line
erably turned slowly in the reverse direction by known
downward toward the yarn tensioner 16 in order to there‘
means (not illustrated).
'
after convey the yarn end, then located in the tensioncr
During further rotation of cam disc 32, the control
16, upwardly to the knotter 41. Such devices are known
lever 36 again turns back in the clockwise direction, and
The tender 5 has a suction conduit 52 whose lower
the suction tube 39 of the yarn-end ?nder device again
turns downwardly, thus entraining the seized yarn end
from the take-up spool 13 into the immediate vicinity
end sequentially communicates with lateral openings 50
of the knotter 41. At the same time the conveying arm
as such, and for that reason are not shown and described
herein in further detail.
a
30
of the tubular carrier 4 as the tender travels along the
46 has passed from its uppermost (dot-and-dash) position
carrier. Each opening 50 (FIGS. 2, 3) is normaiiy
to the lowermost (full-line) position 46 where it seizes
covered by a lid 49. As the tender approaches. the lid 35 the yarn end coming from the supply coil 14. During
is turned away from the opening 50 so that then the suc
tern
tion conduit
of which
50 the
becomes
carrier
connected
4 formswith
part.
the suctio.
Conversely,
the next following return travel in the upward direction of
arm 46, the latter yarn end is also placed against the
l-LIlOllCl' 41 which now ties both yarn ends together.
In the meantime, the cam disc 32 has turned to the
when the tender leaves a winding station, the lid 49 is re
leased and then automatically closes the suction inlet 40 position where its dog 35 presses against the projection
opening 50. The suction conduit 52 provides vacuum
43 of control lever 42 and thus pushes the return tappet
pressure for the suction tube 39 of the yarn-cad ?ntlng
45 toward the left for a short interval of time. The tappet
device.
‘
movement acts upon the lever arm 18 of the yarn guard
The endless chain 8 has one of its chain members pro
17‘ and resets the guard so that the winding station is
vided with an entrainer pin 54 (FIG. 2) which projects"
ready for further operation. When the knotting operation
into a vertically elongated slot 56 in the tender structure
and thereby entrains the tender to travel back and forth
is satisfactorily performed, the winding station now con
tinues‘ the winding-up of the take-up spool 13. If the
knotting operation failed, then the yarn guard 17 does not
remain in its lowermost position and thus initiates a
repetition of the above-described servicing operation upon
along the tubular carrier 4. However, since the tender
5. whenever needed, is stopped by the latch 31 in front
of an individual winding station. a slip clutch
posed betwecn the driving shaft of gear '7 and
sprocket of the endless chain 8, so that the
temporarily arrested as long as the tender
55 is inter
the driving
chain 8 is
is stopped.
In contrast thereto. the endless chain 9 rotates continu~
ously about its sprockets and, as soon as the tender 5 is
stopped, actuates a step-down transmission 57 whose
the next passing of the service unit.
immediately after the dog 35 has passed beyond projec
tion 43, the stop pawl 30 enters into the notch 34 of
cam 32. This releases the latch 31 from the boss 51,
and the chain 8, kept under tension by the slip clutch
55, cntrains the tender 5 by means of the entrainer pin
54. The tender 5 then travels to the next following
rotation is transmitted by a chain 58 and a spur gear 59
through a slip clutch 60 onto a shalt 61 supported on a
winding station where, if needed, the servicing operation
bearing 61a and which carries a worm 62 driving the cam
is initiated and performed in the same manner as de
disc 32.
60 scribed above.
When starting the operation of the multi-station wind
ing machine, the tender 5 first travels from station to
station and, by means of its switching arm 25, feels
whether the yarn guard 17 in each station has turned into
the fault-responsive position shown by full lines in FIG.
2, thus signalling that a lcnotting or coil-exchanging op
eration is needed. The fault-responsive movement of yarn
guard 17 has the effect of turning its switch arm 19 into
the traveling range of the switch arm 25 on the tender so
that when the tender passes by. either from the left or the
right, the arm 19 turns the switch arm 25 in one or the
other direction. Such turning movement of arm 25 is
transmitted through shaft 27 to crani; 28 which, irrespec
tive of the direction of rotation, turns the pawl 30 and
the latch 31 downward. Now, latch 31 enters into the
instead of completely stopping the tender 5 by means
of the latch 31, the machine may be modi?ed in such
a manner as to merely slow down the traveling motion
of the tender, for example with the aid of a brake, as
described below, with reference to connecting element
70 in FIG. 5. This permits operating in such a manner
that the tender 5 has already passed through the range
of the winding station when the knotting is completed.
In other words, the traveling speed of the tender during
yarn-end ?nding and knotting operations can be'adjusted
to the most favorable conditions, so that the tender is
most rapidly available for performing its servicing oper
ations at the next winding station calling for such servic
mg.
In the above-described embodiment the traveling speeds
3,077,311
7
of the tender during forward and return motion are equal.
However, it is also possible to drive a second traveling
chain through another slip clutch and to have this second
chain entrain the tender after it arrives at one of the
lateral standards 1 or 2, so as to return the tender at
increased speed while during return travel the switch arm
25 is turned out of the range of engagement with the
switch arm 19 of the individual stations.
As soon as the
returning tender reaches the other lateral standard, the
8
servicing mechanisms into active condition when there
after the tender reaches the other standard.
The switch arm 25 of the tender shown in FIG. 5 is
joined at 93 with the crank shaft 27. An arm 94, rigidly
connected with the switch arm 25, is located opposite
a latch pawl 95 biased by a spring 96. At the end of
the working travel path, for example at the lateral stand
ard 1, there is mounted a control arm 97 (FIGS. 4, 5,
5A. 14) with an inclined cam face which laterally abuts
arm 25 is returned to normal position. With this design, 10 against the lever arm 94 and thus forces it in the direc
the multiplicity of winding stations are felt-off by the
tion toward the tender. As a result, the front portion
tender for determining whether a servicing operation is
of the arm 94 catches behind the nose of the latch pawl
needed, while the tender is traveling in only one direction.
95. Pawl 95- then latches the arm 94 and thus also
Such a modi?ed design is illustrated in FIGS. 4 and 5
the switch arm 25 in swung-out position where the
in conjunction with an electric drive. However, a de
switch arm 25 occupies the position shown by dot-and
sign of the same ty pe can be applied in the same manner
dash lines (FIG. 5). The switch arm 25 is thus kept
and to the same advantage in a machine otherwise as
out of the range of the switch arms 19 in the indi
described above with reference to FIG. 2.
vidual winding stations so that when the tender passes
In the embodiment of FIGS. 4 and 5, the tender is
through its return travel and along any winding station
driven by means of two electric motors mounted on the 20 whose yarn guard 17 is lifted in response to faulty con~
tender and energized through a ?exible cable. The cable
dition, the servicing mechanisms of the tender are not
81 connects the machine frame structure 1 with the tender
placed in operation. However, when the tender 5 reaches
and is kept taut by means of a tubular part 82 (FIG. 5)
the other standard. namely the standard 2 (FIG. 4),
on which is mounted a helical spring 83 carrying‘ a tubu
the latch pawl 95 abuts against another stationary con
lar rod 84. The rod 84 assumes an inclined position
(FIG. 4) toward one or the other side depending upon
whether the tender is located toward the left or right
of the machine center. In this manner the cable 81
will always be located in the free space above the wind
ing stations.
The tender 5 carries a tubular part 86
(FIG. 5) and a helical spring 85 for receiving the cable 81.
Also mounted on the tender is a reversing switch 87
whose actuating member is formed by pin 88 which
abuts against the lateral standard 1 or 2 as soon as the
tender approaches the standard. This switch in reversing
also changes the motor speed. In this manner the switch
87 reverses the drive of the tender so that the tender
automatically changes its traveling direction.
Instead
trol member 98 (FIGS. 4. 14. 5A) which forces the pawl
95 downward thus releasing the lever arm 94 and hence
also the switch arm 25. The switch arm 25 then swings
back into active position under the force of its biasing
spring 26. and the tender is again in active condition
\thite commencing its forward travel along the winding
stations of the machine.
FIG. 5A further explains the cooperation of parts 93
to 96 in a view taken looking from the left of FIG. 5.
This view is in the same direction as in FIG. 14, but of
an enlarged detail.
\‘fhen the yarn teeter 17 is dropped down in response
to yarn breakage. the lever 25, during travelling motion
of the tender 5. strikes against the lever arm 19 and is
of having the lateral standards act upon the reversing
thereby turned from the middle position 25' shown by
switch, the machine may also be provided with a parti 40 dot-and-dash lines into the full-line position of FIG. 5A.
tion if the tender is to serve only a limited number of
Since lever arm 25 is firmly mounted on the shaft 27,
the totality of winding stations contained in the machine.
the shaft 27 is thus turned and thereby initiates the en
The servicing mechanisms of the tender are driven
tire yarn seeking and knotting operation. After the yarn
‘by an electric motor 189 which may simultaneously
. i1; knotted and again taut, the yarn feeler 17 turns back
serve to provide for feed or traveling motion. The rc~
into the dot~and~dash position of FIG. 5, the lever 25 is
quired vacuum pressure is produced by a blower driven
pulled back by spring 26 into the approximately vertical
by an electric motor 90. The forward travel of the
dot-antl-dash line positions 25’ (FIG. 5A). and the tender
tender is effected by means of the chain 53 through a
5 continues its travel toward the left (FIGS. 14, 5A).
spur gear 100, a slip clutch 301, and friction gears 30?.
When the tender reaches the lateral frame structure 1,
which transmit their rotation onto the running wheels
the tappet 97 engages and moves the part 94 to the right
24 of the tender. A clutch 60 having a friction disc
into the dot-anddash position 94’. This part 94 is
61b on shaft 61 serves to connect shaft 61 and its worm
rotatably mounted on the shaft 27.v A dog 940 arranged
62 to gear 100 so as to drive cam 32 in only one direc
on part 94 displaces the lever 25 counterclockwise to
tion and only during the forward travel of motor 189.
the dohand-dash position 25" during rotational motion
During the return travel of motor 189 the cam mechanism
of part 94. This places the tip of the lever 25 su?iciently
32 and the working devices of the tender 5 are idle.
low so that during the subsequent travelling of tender
Here also, as in the embodiment of FIG. 3, a freewheel
5 to the right (FIGS. 14, 5A), the lever 25 will pass
ing mechanism within the adjacent spur gear 59 permits
beneath and clear the respective dropped lever arms 19
entrainment of disc 61b in one direction of rotation of
at the various stations. During ‘such travelling motion
gear 59 by chain 58, and thus in one direction of travel 60 toward the right. the part 94 is kept is position 94' by
of the tender. In the reverse direction of tender travel.
the latching pawl 95, as shown in FIG. 5A.
the spur gear 59 rotates without entraining the disc 61b
When the tender 5 reaches the right-hand lateral stand
and thus does not rotate cam disc 32. Instead of arrest
ard 2, then the release member 98 engages and unlatches
ing the winding station during the interval in which the
the latch member 95 from the part 94 in opposition to
station is to be placed into operative condition, the em
the pull of spring 96. Consequently, the spring 26 (FIG.
bodiment of FIG. 5 provides for slowing down the opcr~
2) can now pull the lever 25 to the position 25' (FIG.
ating speed of the station. For this purpose a braTJe
5A) and simulizznctmsly causes the dog 940 to move the
shoe 69 is fastened to the member 31 which reduces
part 94 counterclockwise so that the pawl 95 is placed
the traveling speed of the tender but does not completely
against the lo'-v_"r left edge of the part 94. During a
stop the tender.
70 following motion of the tender 5 toward the left, the
The machine is further provided with a device which,
lever 25 can again strike against the dropped lever arm
when the tender approaches one of the lateral standards,
19 of any yarn feclcr 17 that may have responded, and
places the servicing mechanisms of the tender out of
may thus release the yarn-seeking and knotting operations.
action but keeps the travel drive of the tender in oper
As mentioned above, the tender, in response to cer
ation in the reverse direction, and which returns the 75 tain conditions, must discharge an empty supply coil
8,077,331
9
10
from a winding station being serviced and must substi
106 return back to the testing positions, and the wind
ing operation can continue.
tute a full supply coil. The servicing mechanism for per
forming such exchanging operations in each of the above
described embodiments will now be described with par
ticular reference to FIGS. 6 and 7.
Fastened to the above-described control lever 36
(FIGS. 2, 5) are two Bowden wires 66 and 65 which,
depending upon the moving direction of the control lever
36, either push against an arm 71 (FIG. 7) of braking
During dotting an empty core of a supply coil described
above, the braking lever 70, connected to arm 71 of the
5
ejecting device, causes additional braking of the tender
5 due or responsive to the additional coil-exchanging
work. Any conventional braking means can be con
nected between lever 70 and the conduit 4, for this pur
pose; for instance of the same type as is shown at 31,
lever 70 or apply pulling force to a lever arm 72 (FIG. 10 69 in FIG. 5. This braking can serve either to slow
6) respectively. The Bowden wire 65 controls the spear
down or to completely arrest the servicing unit.
ing-up device generally designated 64 (FIGS. 2, 5). The
In machines of the type so far described, there may
Bowden wire 66, provided with a hooked lower end, con—
occur certain rare faults or defects that cannot be elimi
trols a doffer generally designated by 63 for lifting an
nated by the‘ servicing devices of the traveling tender
empty supply coil off the supporting thorn. In the event
but require manual activities or the use of other auxiliary
of yarn breakage, the control lever 36 is turned in the
servicing devices. It may also happen that a defect oc
manner described above. During such displacement, the
curs in the tender so that a number of winding stations
lever 36 pushes the Bowden wire 65 whose other end abuts
cannot be serviced by that tender.
against the arm 71 (FIG. 7). Since an exchange of
It is therefore another object of my invention to im
the supply coil is desired only when the yarn of that 20 prove the machines so that the operating range of the
coil 14 is exhausted, the empty tubular core or quill
servicing tender, as regards the number of winding sta
of the supply coil 14 is removed only upon depletion
tions serviced thereby, can readily be set or modi?ed in
of the yarn on coil 14. The dotfer 63 comprises a do‘ffer
such a manner that it will service only a limited number
arm 104 (FIG. 7) ?xedly mounted on a tubular shaft
105. Linked to shaft 105 is a feeler 106 (FIG. 7)
which rests against the yarn body of the supply coil 14
under the biasing force of a spring 107. Linked to
feeler 106 is a tappet 108 which enters into a groove
of the winding stations in the machine, whereas the other
winding stations can be serviced manually or by some
other servicing device.
A further object of my invention is to increase the
servicing e?iciency of the mobile servicing tenders by
109 of a tubular shaft 110 only when the feeler 106 de
having one and the same multi-station machine serviced
?ects about its pivot due to depletion of yarn on coil 30 by a plurality of mobile servicing tenders whose respec~
14. The shaft 110 is coaxially located within the tubu
tive working ranges, as regards the number of-stations
lar shaft 105. Upon depletion of the yarn of the sup
being serviced,‘ can be varied in adaptation to the par
ply coil, the doffer arm 104 becomes coupled by tappct
ticular fabricating requirements.
108 with the arm 71. Consequently when the Bowden
In accordance with these objects, I assign to a mobile
wire 65 pushes against arm 71 under the conditions al 35 servicing unit a normal working range which covers only
ready mentioned, the doffer arm 104 is entrained and
part of the total number of winding stations in the ma
turns clockwise, thus lifting the empty core of coil 14
chine. The remaining number of stations can then be
off the thorn 67 (FIGS. 2, 5) and readying the thorn
serviced in other ways, for example manually or by
for receiving a new, full coil. However, if there is still
another limited-range servicing unit. Such a division of
su?icient yarn on the supply coil speared-up on the 40 the winding stations into a normal automatic range and
thorn, then the tappet 108 cannot enter into the groove
another, for example manual, range is particularly ad‘
109 and the movement of lever arm~71 caused by Bow
vantageous if a particular starting operation is required,
den wire 65 remains idle, so that no coil exchange is
such as the covering of a coil core with a few initial
effected.
“starter" turns of yarn. In such cases it is further of
advantage to have a ?rst servicing unit (A) perform a
The arm 72 of the spearing-up device (FIG. 6) is
?rmly mounted on an inner tubular shaft 73 which has
certain work (a), whereas another servicing unit (8)
operating within a second range performs a different
a groove 74 into which an entrainer arm 75 can enter.
work (b).
The shaft 73 is located within another tubular shaft 76
upon which the receiving thorn 67 for the take~up coil
The working ranges of the individual servicing units,
is fastened. Both tubular shafts 76 and 73 can rotate 60 each comprising a given part of the total number of
about a common center shaft 77. Firmly connected
with the tubular shaft 76 and the thorn 67 is a holder
member 78 biased by a return spring 79. A feeler 80
winding stations, may be contiguous. This is particu
larly desirable if different types of yarn, having different
breakage frequencies or different depletion periods of
is ?rmly joined with the entrainer 75.
their supply coils, are used on one and the same wind
When the supply coil 14 seated upon the thorn 67 55 ing machine. Then, by virtue of the invention, the in
dividual servicing units can be better adapted to the
still possesses a sut?cient yarn supply on the coil foot
respectively different fabricating conditions of the various
to make a knotting of the yarn end uneconomical, then
types of yarn.
the feeler 80 retains the entrainer 75 in the position
shown in FIG. 6 in which the entrainer cannot enter
However, according to another feature of my inven
into the groove 74 even though it may be in registry there_ 60 tion, the working ranges of the individual servicing units
with. However, when the yarn supply on the coil on
may overlap. Then, two neighboring servicing units may
them 67 is too small, the feeler 80 turns clockwise under
become active within a limit working range common to
the action of its spring 79, and the entrainer 75 is now in
both, whereas each unit is exclusively active in the mid
condition to enter into groove 74. Consequently, when
dle portion of its own working range. In other cases,
65
thereafter the arm 72 is moved by the action of Bowden
particularly when the same fabricating conditions apply
1wire 66, the entrainer 75 catches into groove 74 and
to all winding stations, it is advantageous to have two
entrains the holder member 78 and thus also the thorn
adjacent servicing units supervise and service all stations
67. The thorn then turns downward in the counter
within the entire working range. In this case, however,
clockwise direction into the range of the trough 15 (FIGS.
the individual servicing unit must be given a relatively
2, 5) through which a new, full supply coil is placed 70 long travel and must be provided with switching devices
upon the thorn.
to take care that the neighboring servicing units, when
During return motion of the Bowden wires, the spear~
meeting each other, will automatically reverse their re~
‘ing-up mechanism and the dotfer return into their respec
spective traveling directions.
tive original positions. The feeler 80 and the feeler 75 The above-mentioned further objects and features are
8,672,311. 1
11
embodied in the machine described presently with refer
a block 125 (FIGS. 8, 12, 13) is mounted at the front
ence to FIGS. 8 to 14.
The machine has a frame structure bordered and sup
or rear of the bar 124, can one or the other control lever
112, 113 enter into engagement with the block 125 when
ported on both longitudinal sides by respective standards
the tender, carrying the levers 112 and 113, passes by the
1 and 2 (FIGS. 8, 14). Each of the serially aligned
block. The block 125 has a slanting position relative to
winding stations 3 (FIG. 14) comprises a take-up spool
the traveling direction of the tender 5 (FIG. 13). Conse
13 (FIG. 8) journalled for rotation on a spool frame
quently, the control lever 112 or 113 is turned about its
12 pivoted at 12a. The spool 13 receives the yarn F
pivot by the slanting edge of block 125 as soon as the con
coming from the supply coil 14 and passing over the
trol lever enters into engagement with, and travels along,
rotating yarn-guiding drum 11 whose helical groove, 10 the block. The block 125 has a bore engaged by a dowel
closed upon itself, passes the oncoming yarn back and
pin 126 (FIG. 13) and rests against a stop pin 127 which
forth in the axial direction along the spool 13 as the
is lower than the block 125 and which prevents the block
from being displaced from the slanting position by the en
yarn is being wound up, thus producing the desired
cross-wound yarn package on the spool in a manner
gaging lever 112 or 113. A spring 128 urges the block
similar to the machine described above with reference 15 125 into engagement with stop pin 127.
to FIGS. 1 to 3.
Mounted on the tender 5 in the range of the thread
guard 17 is a switching lever 25 whose pivot shaft car
Due to the fact that each winding station of the ma
chine is provided with a control bar 124 which can be
made to cooperate with the lever 112 or 113 by properly
ries a crank linkedto a latch pawl 30 and operates in
a manner similar to that above described with respect to
can be chosen for determining the travel limit for the
inserting a block 125, each particular winding station
FIG. 2. The switch lever 25 is retained in its normal
tender 5 simply by properly inserting the block 125.
position by a biasing spring 25a (FIG. 8) but deflects
That is, when a winding station is provided with the block
about its pivot axis whenever the lever encounters the
125, then this particular winding station, after being
arm 19 of a fault-responsively de?ected thread guard 17.
serviced by the tender, eifects a reversal in the running
The de?ection of lever 25 causes the pawl 30 to release 25 direction of the tender.
It is of advantage, to make the control bar 124 so
a control cam 32 which initiates and controls the knot
ting operation so that the yarn end is conveyed from
large that it can accommodate two switching blocks 125,
one for the control lever 112 located at the front, and the '
the take-up spool 13 to the knotter, the yarn end from
other block for the rear control lever 113. In this case,
the supply coil 14 is also conveyed to the knotter, and
both are tied together, as already described with respect 30 the multi-station winding machine can be provided with
to FIGS. 1 to 3.
two or more servicing tenders whose respective operating
ranges, each comprising a number of winding stations,
The tender 5 is driven to travel along the winding
overlap; the front position of switching block 125 serving
machine, by means of an endless chain 8 whose chain
links are provided with protruding entrainer pins 101.
to limit the working range of one tender, whereas the rear
Located opposite these entrainer pins is a slider 102 35 position of the switching block limits the working range
of the second tender.
displaceable in both directions, whose groove 108 (FIG.
For example, before placing the machine in operation,
a working range Ia (FIG. 14), comprising the winding
stations Nos. 1 through 7, is assigned to the tender 5A.
those of the lower run. The slider 102 can move up and
down on guide bars 103 and 104 (FIGS. 8, 9, 10, ll) 40 The working range IIa, comprising winding stations Nos.
11), depending upon the slider position, is engaged either
by the entrainer pins 101 of the upper chain run or by
fastened to holding members 105, 106 of a base plate
107. The groove 108 of slider 102 has entrance open
ings 109, 110 at the respective groove ends.
The slider 102 of the entrainer mechanism is placed
6 to 12, is assigned to a second tender 5B; and the work
ing range Ill'b, comprising the winding stations 13 to 16,
is assigned to a third tender 5C. Located at the end of
range Ia, on each side thereof, is a switching block 125
into upper or lower position by means of a control rod 4.5 on control bar 124.
111 whereby one of the respective groove openings 110,
109 is placed opposite the entrainer pins 101 of the upper
or lower chain portion, thus causing the slider 102 to
In this case the blocks 125 are placed
in rear position which is identi?ed in FIG. 14 by show
ing the rear switching blocks 125 and the appertaining bars
124 fully in black. For limiting the working range IIa
gether with the tender 5 to be entrained in one or the
of tender 5B, the corresponding switching blocks 125 are
other traveling direction. The particular position occu 50 mounted in forward position on bar 124, which is identi
pied by the slider 102 is determined by one of two inter
?ed in FIG. 14 by showing block and bar by contour
lines.
connected control levers 112, 113 which move the slider
102 to the upper or lower position through a linking rod
When the machine is put into operation, all individual
114 (FIG. 8), an angular lever 115, and the above-men
winding stations commence operating. As soon as a
tioned linking rod 111. A toggle spring 116, acting upon 55 yarn breakage occurs in any one station, the thread guard
lever 115, retains lever 115 in one or the other limit posi
tion until the lever is moved to the other position by one
of control levers 112, 113.
Aside from the up and down movement of slider 102
17 of that station will turn outwardly.
When now the
traveling tender 5 passes by the winding station, the arm
‘19 of the turned-out guard 17 entrains the switching lever
25 which turns the pawl 30 downward and thereby moves
in the entrainer mechanism, the base plate 107 carrying 00 a vertically reciprocable latch tappet 31 into a catch on
the slider 102 can move toward the right and left.
Dur
the tubular carrier 4 along which the tender runs.
At
ing such motion, the base plate 107 is guided by pins 117,
the same time, pawl 30, by means of its projection 120,
118 and is driven by a bifurcated, angular control lever
actuates the linking rod 123 so that arm 121 of control
119 (FIGS. 9, 10, ll). The right-left stroke is just large
lever 119 turns counter-clockwise (FIG. 8) about its
enough that in the right-hand position (FIG. 9) the pins 65 pivot 122 and displaces the base plate 107 (FIGS. 8, 9)
117, 118 remain outside of groove 108, whereas when the
toward the right. The base plate 107 and its holders 105,
base plate 107 is in the left-hand position (FIG. 9) the
106 entrain guide rods 103, 104 and slider 102 toward
pins enter into the groove. The forked control lever 119
is turned about the pivot 122 by a linking rod 123 which
the right. This moves the slider 102 out of the range of
the entrainer pins 101 of the conveyor chain 8 so that
links the arm 121 of lever 119 to an extension 120 of 70 the chain can continue running without further entrain
the above-mentioned pawl 30.
Each individual winding station is provided with a con
trol bar 124 which is located near the control levers 112,
113 of the traveling tender but does not directly protrude
ing the tender.
The knotting device 47 of the tender can now perform
its operation. After completing the work, the control
tappet 45 is pushed toward the left by dog 35 of cam
into the traveling path of the levers 112, 113. Only if 75 disc 32 pushing against control lever 42. The tappet 45
i3
newest
then returns the thread guard 17-into its original position.
This has the effect of again placing the winding station
into winding operation.
lid
servicing unit along a series of winding stations to be
serviced, said drive means comprising means for varying
the time spent in performing a total run in one direction
The tender 5 continues its travel. If no servicing is
of the unit in dependence upon the amount of servicing
required by any of the winding stations along the further
work to be performed during one pass of said unit past
travel path, the control lever H2 or lid ultimately abuts
said series of stations.
against a switching block 125. As is particularly ap
2. Apparatus for servicing a m-ulti-station coil winding
parent from FIG. 13, the lever 113 or 112, depending
machine, comprising a servicing unit movable along the
‘upon the positioning of switching block 125, is deflected
winding stations for eliminating stoppage due to yarn
along the slanting surface of block 125 as indicated by 10 absence in said respective stations, said unit being pro
an arrow in FIG. 13. The movement is transmitted
vided with drive means for continually reciprocating the
through linking rod 114, angular lever 115 and linking
servicing unit along a series of winding stations to be
rod 111 to the slider 102 of the entraining mechanism,
serviced, and means for delaying the unit in fronuof
thus displacing the slider upwardly. Since, when the
said respective stations in response to stoppage occurring
winding station is again switched on, the latch pawl 30
in a station for a delaying interval required for the unit
and its projection 120 have turned upwardly, this up
to eliminate the stoppage in said station.
ward motion, as already described, is transmitted through
3. The method of servicing a multi-station coil winding
linking rod 123 and arm 121 onto the control lever 119
machine by a servicing unit movable along the winding
which turns the slider 102 toward the left, that is, into
stations for eliminating stoppage due to yarn absence in
the range of the conveyor chain 8. The lifting of the 20 said respective stations, which comprises moving the
slider 102 from its lower into its upper position also
servicing unit at relatively slow speed and in active con
causes reversal of the traveling direction of the tender,
dition forward along a series of winding stations and
and the tender runs in its new direction until it abuts
temporarily delaying the unit in coactive relation to each
against the next switching block 125 which then again
station of the series that requires servicing at a time, re
causes reversal of the travel.
25 versing the travel direction of the unit after it has reached
If the conditions are such that two tenders may meet
the end of the series and returning it at relatively high
each other, as is the case with overlapping operating
and continuous speed and in idle condition to the be
ranges such as shown at In and 11a in FIG. 14, then it is
ginning of the series, and continually repeating the for
necessary to effect a reversal in traveling motion of the
ward and return travel of the unit.
two tenders also whenever such meeting occurs. For 30
4. A yarn-coil winding machine, comprising a multi
this purpose, at least one of the two tenders is provided,
plicity of serially located winding stations, a mobile service
on its side facing the other tender, with a protruding
ing unit having a travel path along said stations and hav
control member 129 '(FIGS. 8, l4, 15) which acts through
an angular lever 13!), pivoted at 130a, upon the linking
rod 114 and reverses the travel of both tenders.
It will be realized that in a machine of the type de
scribed with reference to FIGS. 8 to 14, there is the
possibility of mounting on each individual winding sta
tion a device for selectively limiting the operating range
of the mobile servicing units by automatically reversing
the traveling motion of the unit. As also described, it
is preferable to make the limiting and travel-reversing
control means readily movable from each winding sta
tion so that these means need be mounted only if and
where required. That is, each winding station is prefera 45
bly so designed that this particular station can be made
to operate as a limit position for the traveling servicing
unit merely by turning a switching lever, inserting a
block or other component.
ing automatic servicing means comprising yarn-end ?nding.
means and yarn-end knotting means and coil-exchanging
means, each of said stations having sensing means re
sponsive to yarn failure and engageable with said unit only
when in responded condition to then initiate the opera~
tion of said servicing means, drive means for reciprocating
said unit on said travel path, and drive control means on
said unit for varying the time spent by said unit during
one pass of said unit past said serially located stations in
dependence upon one said respective servicing means being
in operation.
5. A yarn-coil winding machine, comprising a multi
plicity of serially located winding stations each having
supply-coil holder means and take-up winder means and
each station having sensing means responsive to absence
of yarn between said holder means and said winder means
for controlling said winder means to stop upon occurrence
The machine according to FIGS. 8 to 14 also em‘ 50 of such absence; a mobile servicing unit having a travel
path along said stations and having automatic servicing
bodies the feature of my invention according to which
means including a yarn knotting mechanism for restoring
the mobile servicing unit itself is provided with a device
a stopped winding station to active condition, drive means
for reversing its traveling motion. This is necessary in
for reciprocating said unit in said path, and drive control
cases where an overlapping of working ranges is de
sired. If two neighboring servicing units meet each 55 means mounted on said unit and having a control member
actuable by any one of said sensing means when said
other within the overlapping range, the travel-reversing
sensing means is in responded condition and said unit
devices of the units enter into operation before the units
reaches said responded sensing means during travel of said
actually hit against each other. Furthermore, the travel
unit, said drive control means comprising travel delaying
reversing device of the mobile unit is also capable of
cooperating with the travel-reversing device of the par 60 means controlled by said control member to temporarily
delay said unit at the station being serviced at a time.
ticular winding station selected for de?ning the travel
limit position.
6. A yarn-coil winding machine, comprising a support
structure, a multiplicity of winding stations mounted on
said support structure, each station having a supply-coil
study of this disclosure, that my invention permits of
various modi?cations and may be embodied in machines 65 holder and a take-up winder, a servicing tender mounted
It will be obvious to those skilled in the art, upon a
other than those particularly illustrated and described
herein, without departing from the essential principles
for reciprocating travel along said winding stations, said
tender having servicing means for ?nding and tying ends
of the yarn between said winder and said holder, each
and features of my invention and within the scope of
winding station having a yarn guard located between said
the claims annexed hereto.
I claim:
70 winder and said holder, said guard having a normal condi
1. Apparatus for servicing a multi-station coil winding
tion and having a fault-responsive condition in response
machine, comprising a servicing unit movable along the
to absence of yarn, said tender having travel control means
winding stations for eliminating stoppage due to yarn
for delaying the travel of said tender, said travel control
absence in said respective stations, said unit being pro
means being responsive to said yarn guard only when said
vided with drive means for continually reciprocating the 75 guard is in said responsive condition at an individual sta
l5
15
tion whereby said control means delays said tender along—
side said station, and said tender having service control
means responsive to said travel control means and coin
station and to initiate the yarn-?nding and tying operation,
said control means being connected to said servicing
means to pivot said suction nozzle and said supply coil
nected with said servicing means to cause said servicing
holder.
means to perform the yarn-?nding and tying operations.
7. A yarn-coil winding machine, comprising a support
10. A yarn-coil winding machine, comprising a multi
structure, a multiplicity of winding stations mounted on
plicity of serially located winding stations, a mobile serv
icing unit having a travel path along said stations and
the support structure, each station having a supply-coil
having automatic servicing means comprising yarn-end
holder and a take~up winder, a tubular horizontal mem»
?nding means and yarn-end knotting means and coil
exchanging means, each of said stations having sensing
ber extending along said stations, means for producing
suction in the member, a servicing apparatus mounted
for travel lengthwise of said member, drive means for
reciprocating said servicing apparatus along said member,
said apparatus having servicing means comprising suction
means responsive to yarn failure and engageable with said
servicing unit only when in responded condition to then
initiate the operation of said servicing means, drive means
for reciprocating said unit on said travel path, said drive
nozzle means for ?nding and entraining the yarn ends and 15 means having high speed in one travel direction of said
tying means for joining the yarn ends between said winder
unit and slow speed in the other direction, said unit hav
and said holder, said suction nozzle means communicating
ing control means connected with said servicing means
with said tubular member, each of said winding stations
for rendering said servicing means idle during travel in
having a movable yarn guard normally in one position
said one direction, and said unit having delaying means
and displaceable to another poistion in response to yarn 20 connected with said servicing means for delaying said unit
failure between said holder and said winder to control
during travel in said other direction during operation of
arresting of said winder upon occurrence of such failure,
said servicing means.
said servicing apparatus having a travel delaying device
11. A yarn-coil winding machine, comprising a multi
responsive to failure-responsive displacement of said yarn
plicity of serially located winding stations, a mobile serv
guard at an individual station, and said servicing ap 25 icing unit having a travel path along said stations and
paratus having control means connecting said delaying
having automatic servicing means comprising yarn-end
device with said servicing means for causing performance
?nding means and yarn-end knotting means and coil
of the yam-?nding and tying operations while said ap
exchanging means, drive means for reciprocating said
paratus is temporarily delayed alongside said individual
unit on said travel path, said unit having a control mem
station.
30 ber normally in a given position and movable to another
8. A yarn-coil winding machine, comprising a support
structure, a plurality of winding stations mounted on the
support structure, each station having a supply-coil holder
and a take-up winder, a mobile servicing apparatus having
a travel path along said stations, drive means for re 35
ciprocating said apparatus along said path, said apparatus
having servicing means for ?nding and tying the yarn
ends between said holder and said winder, each of said
winding stations having a movable yarn guard normally
in one position and displaceable to another position in
only if said guard member is in said responsive position
when said unit reaches said one station whereby said con
trol member causes operation of said servicing means,
40 said unit having travel control means connected with
response to yarn failure between said holder and said
winder to control arresting of said winder upon occur
rence of such failure, said servicing apparatus having a
device responsive to said yarn guard at an individual sta
tion when said guard is in said other position, stop means 45
connected with said device for arresting said apparatus
alongside said station, control means connected with said
device for controlling said servicing means to operate
while said apparatus is arrested, and release means re
sponsive to said control means for releasing said apparatus
to continue its travel when said servicing means complete
position for controlling said servicing means to perform
a cycle of operation, each of said stations having a yarn
engaging guard member movable to a responsive position
in dependence upon occurrence of yarn failure in said
station, said guard member in any one station being en
gageable with said control member of said servicing unit
and controlled by said control member to delay said unit
during said operation.
12. In a winding machine according to claim 7, said
servicing apparatus having wheels running on said tubular
member and having a center of gravity located approxi
mately on the axis of said tubular member.
13. In a winding machine according to claim 4, said
drive for said servicing unit comprising a motor mounted
on said unit and drag cable means connected with said
motor to supply power thereto.
14. In a winding machine according to claim 4, said
drive for said servicing unit comprising an endless drive
9. A yarn-coil winding machine, comprising a support
member extending along said travel path, and said serv
structure, a plurality of winding stations mounted on
icing unit having entrainer means for coupling said end
the support structure, each station having a lower pivoted 55 less member with said unit.
supply coil holder and an upper take-up winder, a tubular
15. In a winding machine according to claim 4, said
horizontal member having an individual suction opening
drive for said servicing unit comprising an endless drive
for each winding station, means for producing suction
member extending along said travel path and entrainer
in the member, a servicing apparatus mounted for recipro
means for coupling said endless member with said sew
cating travel to left and right lengthwise of said member,
icing unit, and a second endless drive member extending
their operation.
drive means to so move the servicing apparatus, the latter
apparatus having servicing means for ?nding and tying
end portions of the yarn between said winder and said
holder, the yarn-?nding means including a pivoted suction
along said path, said servicing unit having transmission
means connecting said second endless member with said
servicing means for driving the latter.
>
16. A yarn-coil winding machine, comprising a multi
nozzle, suction conduit means connected to said nozzle 65 plicity of serially located winding stations, a mobile serv
and movable along and communicating with said tubular
icing unit having a travel path along said stations and
member through said respective suction openings, each of
having automatic servicing means comprising yarn-end
said winding stations having a movable yarn guard nor
?nding means and, yarn-end knotting means and coil
mally in one position and displaceable to another position
exchanging means, each of said stations having sensing
in response to yarn failure between said holder and said 70 means responsive to yarn failure and engageable with said
winder to control arresting of said winder upon occurrence
unit only when in responded condition to then initiate the
of such failure, control means carried by the servicing
operation of said servicing means, an endless drive mem
apparatus including a device responsive to said yarn guard
ber extending along ‘said path, a motor, a slip clutch con
when said guard is in said other position at an individual
necting said motor with said endless member, said serv
station to delay the servicing apparatus alongside said
icing unit being connected with said endless member so
8,027,311
as to be reciprocated on said travel path, and said serv
icing unit having arresting means responsive to said
sensing means when the latter is in‘ said responded condi~
tion, said arresting means being adapted to stop said unit
and said endless member during operation of said serv
icing means while said slip clutch permits continued oper
ation of said motor.
id
?nding and irnotting means for restoring an inactive wind
ing station to active condition, each winding station hav
ing means responsive to yarn failure and engageable with
said unit only when in responded condition to then delay
the travel of said unit and initiate the operation of said
servicing means, drive means for moving said unit along
said path, said mobile unit having a reversing switch de
vice for reversing its direction of travel, and stationary
17. A yarn-coil winding machine, comprising a multi
plicity of serially located winding stations, a mobile serve
travel control means located at the respective ends of
icing unit having a travel path along said stations and 10 travel for causing said unit to reciprocate on‘said travel
having automatic servicing means comprising yarn-end
path, said travel control means having selective positions
?nding means and yarn-end knotting means and coil~ex
changing means, a service control device disposed on said
unit and having a single-revolution cam mechanism linked
with said servicing means for controlling the latter to
perform a single cycle of operations during one revolu
tion of said cam mechanism, latch means normally ar
resting said cam mechanism and having a release control
member displaceably mounted on said unit, each of said
along said path for limiting the length of reciprocating
travel of said unit to a desired number of said winding
stations less than the total number of stations.
21. A multi-station Winding machine according to .7
claim 20, comprising a plurality of servicing units, each
unit having a range of reciprocating travel covering only
part of said total number of stations.
22. A multi-station winding machine according to
winding stations having sensing means responsive to yarn 20 claim 20, comprising a plurality of servicing units, each
failure and engageable with said release control member
unit having a range of reciprocating travel covering only
of said servicing unit only when said sensing means of
part of said total number of stations, the respective ranges
an individual winding station is in responded condition
of two of said units overlapping each other, and at least
whereby a cycle of servicing operations is initiated as
one of said two units having travel control means co
the unit reaches said individual station, drive means con 25 active with said switch device of the other unit for re
nected with said servicing unit for reciprocating it on said
versing the travel of said other unit when said two units
travel path, and delay control means mounted on said
meet each other.
unit and connected with said release control member for
23. A multi-station winding machine according to
delaying said unit alongside said individual station during
claim 20, comprising a plurality of servicing units, each
said cycle of servicing operations.
30 unit having a range of reciprocating travel covering only
18. In a winding machine according to claim 17, each
part of said total number of stations, a separate set of
of said winding stations having a supply~coil holder and
said stationary travel control means being provided for
a take-up winder and means de?ning a yarn path be
each of said units whereby said respective ranges are se
tween said holder and said winder, said sensing means
lectively adjustable.
comprising a yarn guard normally in a position of en 35
24. In a multi-station winding machine according
gagement with the yarn on said yarn path and de?ectable
to claim 20, each of said winding stations having holder
to another position upon yarn failure to then stop said
means for accommodating one of said. stationary travel
winder, said guard being engageable with said release
control means whereby the travel of said unit can be
control member of said servicing unit only when said
reversed at any selected one of said stations.
guard is in said other position, whereby said yarn guard 40 25. A multi-station winding machine according to
returns to said normal position to re-start said winder
claim 20, comprising a plurality of servicing units, each
when said servicing operations succeed in eliminating
unit having a range of reciprocating travel covering only
part of said total number of stations, said stationary travel
19. A winding machine according of claim 17, com~
control means being mounted at said respective winding
prising a rigid carrier structure extending along said 45 stations, and some of said stations having said travel
travel path, said servicing unit having running Wheels en
control means selectively engageavble with said switch de
gaging said carrier structure to run along said structure,
vice of different ones of said respective servicing units.
and said delay control means comprising a stop member
References Cited in the ?le of this patent
engageable with said carrier structure for arresting said
unit during said servicing operation, and actuating means 50
UNITED STATES PATENTS
,
linking said stop member with said latch means for actu~
2,208,930
Kahlisch ____________ __ July 23, 5940
yarn failure.
ating said stop member when said cam mechanism is re
leased for a cycle of servicing operations.
2,757,874
20. A yarn-coil winding machine, comprising a multi
plicity of serially located winding stations, a mobile serv 55
icing unit having a travel path along said stations and
200,629
Furst ________________ -_ Feb. 7, 1956
Marcellus ____________ .._ Aug. 7, 1956
720,202
Great Britain _________ _- Dec. 15, 1954
having automatic servicing means comprising yarn-end
2,733,870
FOREIGN PATENTS
Switzerland _...._......_-_.._ Feb. 16, 1939
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