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Патент USA US3064417

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Nov. A20, 1962
Filed Deo. 24, 1959
» 30.5'
l5 Sheets-Sheet l
Nov. 20, 1962
Filed Dec. 24, 1959
15 Sheets-Sheet 2
Nov. 20, 1962
Filed Dec. 24, 1959
l5 Sheets-Sheet 5
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l5 Sheets-Sheet 8
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Patented Nov. 20, 1962
George H. Logemann, Mundelein, and .lohn Georgeoä,
Norridge, Ill., assignors to Etico Containers, Inc., a
corporation of Illinois
Filed Dec. 24, 195§a Ser. No. 861,992
20 Claims. (Cl. 53-307)
showing a portion of the closure machine of FIG. l,
with part of the housing again being removed;
FIG. 4 is an enlarged fragmental end elevational view
similar to that of FIG. 2 and showing additional features
of construction;
FIGS. 5A to 5D are a series of schematic views show
ing the principal elements of the machine in the succes
sive positions which they assume during a typical operat
ing cycle;
FIG. 5E is a timing chart for the elements shown in
This invention relates to a machine for automatically 10
FIGS. 5A to 5D;
applying closure lids to containers such as foil pans, and
FIG. 6 is an enlarged fragmentary plan view of the
portion of the conveyor mechanism adjacent the central
work station where the closure lids are applied and sealed
closure lid to the container in a synchronized sequence of
15 to the containers, the view being taken on the line 6-6
of FIG. 4;
Among other objects of the present invention are the
FIG. 7 is a transverse sectional view of the conveyor
provision of a closure machine for separately and sub
section of FIG. 6 and is taken substantially along the line
stantially simultaneously supplying a container and
7-7 of FIG. 6;
closure lid to a work station where the container and
FIG. 8 ís an enlarged vertical front elevational view
closure lid are gripped between upper and lower dies for 20
illustrating the details of the mechanism for raising and
fixing and sealing the closure lid on the container, the
lowering the lower die of the machine;
provision of a closure machine having a short operating
FIG. 8A is an enlarged fragmental sectional view show
cycle for achieving a high production rate, the provision
ing the control cam arrangement for positioning the lower
of a closure machine having accurate positioning mechan
ism for ensuring proper alignment of the container and 25 die and is taken substantially along the line 8A-8A of
FIG. 8;
closure lid, and the provision of a closure machine that
has for its principal object the provision of a machine of
this nature having facilities for applying and sealing the
is readily convertible to use with containers of various
FIG. 9 is a vertical elevational view of the lower die#
positioning mechanism shown in FIG. 8 and including
the container stop mechanism associated therewith, with
In accordance with this invention, separate facilities
are provided for intermittently feeding the containers and 30 parts of the structure being broken away and sectioned to
facilitate disclosure;
closure lids into overlying relation at the work station,
FIG. 10 is a detail plan view of part of the mechanism
and these facilities are synchronized with the mechanism
for operating the container stop;
for controlling the relative opening and closing move
FIG. 11 is an end elevational View of a lower die for
ments of the cooperating upper and lower sealing dies.
The containers are fed to the work station by a con 35 use with rectangular containers, a portion of the view
being shown in vertical section, the view being taken sub->
veyor mechanism which momentarily deposits each con
stantially along the line 11--11 of FIG. 12;
tainer in accurate position on a support located at the
FIG. 12 is a plan view of the lower die of'FIG. 11;
work station.
FIG. 13 is a vertical sectional view taken substantially
The closure lids are fed to the work station from the
bottom of a lid-stacking magazine by a reversibly oper 40 along the line 13-13 of FIG. 12;
FIG. 14 is a fragmentary vertical sectional View illus
able extractor unit that is swingable in a smooth, con
trating the operating mechanism for the container stop
tinuous motion between a semi-upright position beneath
the magazine and an inverted position overlying the con
that is associated with the lower die;
tainer support.
FIG. 15 is a right end elevational view of the mecha
The upper die is swingable with the extractor unit, 45 nism of IFIG, 14;
while the lower die is movable upwardly through the
FIG. 16 is a front elevational view of the capping unit,
work station to lift the container and the closure lid into
with part of the housing thereof broken away to facilitatel
engagement between the upper and lower dies.
’ `
-In the arrangement of this invention, a locating stop is
iFIG. 17 is a top plan view of the capping unit of FIG.
movable through the lower die to project above the con
16, with the closure lid m-agazine thereof omitted;
tainer support at the moment that a container arrives
FIG. 18 is a right end elevational View of the capping
thereat for accurate positioning engagement with the con
unit of FIG. 16, with parts thereof removed for conveni-tainer.
ence of disclosure;
A further feature resides in the replaceable mounting
FIG. 19 is a rear elevational view of Athe capping unit
of the upper and lower dies, which facilitates ready con 55
of FIG. 16;
version of the machine to the handling of containers of
FIG. 20 is a front elevational View of the capping unit
varying sizes. In addition, the actuating mechanism for
illustrating the parts thereof in position for extracting a
the locating stop and for the conveyor are compatible
closure lid from its supply mechanism;
with a range of container sizes.
Other objects and advantages will become apparent 60 FIG. 21 is an exploded fragmentary perspective viewV
of parts of the capping unit;
during the course of the following description.
FIG. 22 is a plan view of the upper die and extractor
In the accompanying drawings forming a part of this
specification and in which like numerals are employed to
mechanism of the capping unit;
designate like parts throughout the same:
IFIG. 23 is a vertical sectional View taken substantially
along the line 23-23 of FIG. 22;
FIG. 1 is a front elevational view of a closure machine
FIG. 24 is a sectional view corresponding generally to
embodying the features of this invention, with portions
of the housing thereof broken away to facilitate the dis
that of FIG. 23 and illustrating the normal position of
FIG. 2 is a right-hand end elevational view of the
closure machine of FIG. 1;
FIG. 3 is an enlarged fragmental front elevational view
the upper die and extractor mechanism; and
FIG. 25 is a sectional view of a stationary capping unit
70 for use with the container delivery and elevating mecha
Y nism.
Genero] Arrangement and Operation
vision of a limiting stop 42 becomes necessary to assure
an accurate iinal location of the container. With this
Referring now to the drawings, the closure machine is
arrangement, the pusher plate 38?, which is of suñicient
shown in its entirety in FIGS. 1 and 2, and it includes
height to »contact the container at the edge of its marginal
a base cabinet designated generally as 3l) and having a
rim, stops short to afford a slight clearance with respect
number of uprightfrarning members SGU which receive 5 to the container for accommodating unimpaired vertical
front, rear and side vsheet metal panels 301:, 3011 and '
movement of the lower die 41.
30S, respectively, and a capper unit 31 surmounting the
In instances where the machine is handling a dry prod
base cabinet approximately centrally of the width and
uct, it may operate at such high speed that the containers
towards the rear thereof and having front and rear panels
rebound upon striking the stop 42. The following ac
-31'F and 31R, respectively, interconnected by a number
tion of the pusher plate SSP as it completes its decelera
of cross bars 31B. ri`he base cabinetôû houses the drive
is effective, in such cases, to trap the container
mechanism for powering and timing> the operation of the
against the possibility of its bouncing out of the die 41.
lvarious mechanisms «for‘handling assembling and sealing
The timed sequence of container Yand closure lid'sup
the containers C and their closure lids L.
ply to the kwork station and `of die movement at the work
The ‘drive mechanism includes ’a motor 32 mounted
station and the ancillary function of the stop 42 andthe
from the cabinet frame to position its shaft vertically,
vacuum-operated extractor mechanism E is best under
with the motor having aV drive sheave 33 connected to a
stood by reference to the sequence of diagrammatic
'driven sheave 34 by a belt 35. The driven sheave 34, in
views shown in FIGS. 5A to 5D taken in conjunction
turn, is connected to a gear box 36 for rotating the ma
20 with the rnachine’s timing chart, shown in FIG. ySIE.V As
chine’s main drive or cam shaft 37.
indicated in FIG. 5A, the right-hand container C has
A -conveyor mechanism 38 extends horizontally -across
been capped and is being removed by the conveyor mech
the top of the base cabinet and includes spaced apart,
anism, while the left-hand container C is now advancing
towards the -work station for deposit on the .support plat
form 319. At this time the lower die 41 is down and the
stop 42 is retracted within it, while the extractor mecha
nism and upper die 4i) have been swung into semi-upright
sprocket-driven drive Vchains, 38C suitably interconnected
at points spaced lengthwise of the travel of the conveyor
by pusher bars 38B, 'each of which carries a pusher plate
for advancing a container to 'the work station S which is
located 'directly beneath the capper unit 31. The con«
position adjacent and engaging the bottommost closure
lid L in the lid-supply magazine M. FiG. 5A corresponds
veyor'mechanism includes an elongated approach section,
a fragment or" which is indicated generally at 38A on the
approximately to the 90° line of the cam shaft timing
left side of FIG. 1, and the containers which are to be
`capped vmay be deposited on 'this approach section by any
Y chart of FIG. 5E.
suitable automatic mechanism (not shown), or manually,
as desired. It will be understood that only one container
is deposited lbetween adjacent pusher plates 3813. The
on the support platform 3,9. During this time, the ex
tractor mechanism E, with a cover lid L in place thereon,
path Vof the conveyor chains 38C, as indicated by the
arrows P in FIG. 1 and 3, extends vertically downward
along 'the right-hand side panel 30S, then across the bot
tom‘of Athe ‘base cabinet and angularly upwardly towards
the'upp'er left-hand Vcorner of the base cabinet, as viewed
in FIG. l.
As indicated in FlG. 57B, the stop~ 42 is extended
through the lower die 41 to project above the support table
and engage and accurately position the container arrivingV
and the upper die 4t), are returning Vto their normal 1n
verted position labove the platform 39. Thus FIG. 5BV
corresponds to the 180° line of the cam. shaft timing
chart of FIG. 5E and it also illustrates the approximate
relationship between the pusher plates SSP of the con
The -closure lids L are stacked in inverted relationship
veyor mechanism and a container in position on the sup
in a’ma'ga-zine Mv mounted to extend angularly upwardly
port platform 39. The characteristic deceleration of the
pusher plate `allows the container to move free, and the
plate is stopped short to provide the illustrated clearance
from adjacent one end of the 'capper unit 31, and the
eapper unit includes an extractor mechanism Vreversibly
swingable in a smooth, continuous motion between an
for accommodating free movement of the lower die 41
while still preventing the possibility of a container re
bounding from stop 42' and escaping the die 41.
FIG. 5C corresponds approximately to the 249° line
The extractor unit successivelyV feeds closure lids indi
vidually to the workstation and each closure lid arrives 50 of the -cam shaft timing chart and shows that the ex
tractor unit has returned to and remains at its 4normal
thereat inY predetermined timed relation with the con
inverted position and holds the cover lid while the lower
tainers supplied thereto along the conveyor.
die is moving upwardly into rim kengagement with theV ’
. As indicated'diagrammatically in FÍGS. 5A to 5D,
container for elevating it above the plate 39.
the extractor mechanism E ofthe capper unit also includes
Finally, FIG. V5D shows the container, with VVits cover
an upright die 40 swingably movable therewith and co 55
lid in place, gripped between the upper and lower dies
opera‘ole with a lower die 41 which is vertically reciproca
inverted, or downwardly facing, position in which it is
shown at E in FIG. l, and a substantially upright position
underneath and facing the bottom end of the magazine M.
for sealing the cover lid tothe container. The vacuum
grip of the extractor mechanismv on` the cover lid is re
leasedl immediately before vthe dies engage. Thereafter, '
ble through the work station area to elevate »a container
thereat and carry it upwardly to receive the'closure lid
and gripv the container and lclosure lid in sealing engage
ment between the upper and lower dies'. The controlled 60 the lower die `drops down to deposit the sealed 'container
on the support table 39; and during this motion the ex
tractor unit swings upwardly towards the position Vin
which it is shown in FIG. 5A, while the conveyor carries
away the sealed container and introduces another open
i movement of the extractor mechanism ensures accurate
positioning of the closure lids, while a separately con
trolled, momentarily actuated stop 42 cooperates with
the pusher plates SSP and side-guide facilities on the con
Y veyor for ensuring accurate location of each container on 65
a stationary support platform 39.
Conveyor Arrangement and Operation
>It will be understood that the conveyor mechanism un
dergoes an intermittent motion characterized -by gradual
accelerationvand gradual deceleration at the beginning and
The conveyor mechanism is controlled» Vby a Geneva
movement powered from the drive shaft '37„ which, as
end of 'each such movement cycle in order to provide 70 best shown in FIGS. 3 and 4, carries »a sprocket 51 con-A “
nected by a link chain 52. which is engaged intermediately
'smooth travel for the containers, _which is some instances
areñlled with liquids, such as gravy, .for preventing spill-l
with a sprocket 53 and at its other end is trained over aV i»
age. However, the momentumrof thercontain'er would
'normally' cause it to move free of the pusher plate dur
sprocket 54 mounted on Va driven shaftV S5 thatY mounts ä;
thercontinuously rotating wheel 56 of the nGeneva move- '
ing the deceleration phase of the movement and the pro 75 ment. The Geneva wheel 57 is journalled on a shaft 53 .
and is provided with four equally spaced, radially ex
tending, open-ended slots 57S which cooperate with drive
pins 56P carried in correspondingly spaced relation on
the continuously rotating wheel 56.
As is best seen in FIG. 3, the Geneva wheel 57 is driven
one quarter of a revolution each time that a drive pin 56?
comes by, and this produces the characteristic intermit
tent advance of the Geneva movement.
The shaft 58 for the intermittently driven Geneva
Lower Dz'e an’d Container Stop Mechanisms
The lower die 41 is of a hollow, pot-shaped construc
tion and, as indicated adjacent the top of FIGS. 8 and 9,
it has the stationary support platform 39 located Within
it on a plurality of stationary
which are best shown in FIGS.
port posts 80 are fixed in and
guide shell 81 that is carried
vertical support posts 80
11, 12 and 13. 'I‘he sup
extend upwardly from a
on a horizontal framing
wheel 57 also carries a large gear wheel 59 which meshes l0 plate 82 located centrally within the base cabinet 30. The
framing plate 82 is mounted to a horizontal header 83
with and drives a pinion gear 60 on the conveyor drive
which is bridged across the upper ends of a pair of internal
shaft 61. The conveyor drive shaft 61 carries sprockets
support walls 84 which provide support for the various
shafts that comprise the control mechanisms for the lower
die 41 and the stop 42.
about the base cabinet for guiding the return flight of the
In the related views of FIGS. 8 and 9, the lower die
conveyor chains. Along their upper flight, these conveyor
41 is shown in its uppermost or container-sealing position
chains 38C, to-gether with their cross bars 38B and pusher
corresponding to that of FIG. 5D, while the stop 42,
plates 38?, move across a slide plate 64 on which the
which is contained in and vertically reciprocable through
containers `are supported and guided during their advance
to the support platform 39 of the work station and beyond. 20 the surrounding wall of the lower die, is illustrated in
retracted position within the lower die. The lower die
The slide plate is interrupted intermediately along its
is fixed to a mounting plate 85 secured to the upper ends
length to accommodate the support platform.
of a pair of posts 86 and 87, which are slideable ver
As is best seen in FIG. 7, throughout substantially the
62 (see FIG. 4) around which the conveyor chains A38C
are trained. A number of idler sprockets 63 `are spaced
tically through the stationary guide shell 81 and which,
entire horizontal movement of the upper flight of the con
veyor chains, they are constrained to slide along hori 25 at their lower ends, project beneath the main framing
plate 82 for connection to a yoke which is comprised of
zontal trackways T mounted on transversely extending
spaced apart parallel side pieces 88 (see FIGS. 8 and 9)
horizontal angle-iron framing members 30H of the base
cabinet. Cooperating container-guide plates 65 having
tapered, slightly converging entering ends 65E (see FIG.
each of which has a depending ear 88E apertured to co
operably receive a mounting pin 89 for a roller 90 that
6) are arranged above the sections of the flight chains 30 is disposed between these ears.
A connector 91 of H-shaped cross-sectional configura
extending along the support platform, and they cooperate
tion (see FIG. 9) has horizontally elongated slots 91S
with the stop member 42 and the pusher plates SSP of
along its upper walls. The side pieces 88 and roller 90
the conveyor for ensuring accurate location of the arriving
are received between the upper walls of the connector
containers on the support plate. The guide plates 65
overlie positioner bars 66 which are mounted to the 35 casting, with the connector casting 91 being positively
engaged to the -side pieces 88 and hence to the vertically
machine frame by means of pivot pins 66P and are con
movable posts lby engagement of opposite ends of the
nected to the plates 65 by pivot pins 65P. The positioner
mounting pin 89 within its slots 91S.
bars 66 adjacent the right-hand side of FIG. 6 have end
The -connector casting 91 is mounted to the horizontal
extensions 66E connected to positioner knobs 67 through
40 arm 92 of a crank arm structure which pivots about the
pins 67P which lare movable in slots 68.
axis of shaft 93 and which includes a depending vertical
When the guide plates 65 are spaced apart to a maxi
arm 94 terminating in an open-sided cage defined by
mum extent, as shown in full lines, the positioner bars
spaced side plates 94S and a rear roller plate 94K.
66 extend parallel over the trackways T, and by manipu
During both its upward and downward movements,
lation of the positioner knobs 67 the bars may be pivoted
to an inwardly extending angular position for shifting 45 the lower die 41 is driven by positive connection to the
crank arm structure. The position of the connector cast
the guide plates inwardly as suggested by the phantom
ing 91 along >cra-nk arm 92 is adjustable by the threaded
line illustrations thereof for handling and guiding smaller
rod 92T to provide a precision adjustment of die move
sized containers. In the illustrated construction, as best
ment for accurately regulating the impact of the dies.
seen in FIG. 7, the trackways T, positioner bars 66, and
guide pla-tes 65 are preferably masked by top panel sec 50 Harder die impact results from adjustment of the con
nector towards the right, as viewed in FIG. 8.
tions 30'1‘ of the base cabinet.
Upward die movement is controlled by cam 96 on the
As best shown in FIGS. 3 and 4, the connection from
main drive or cam shaft 37, while downward die move
the Geneva movement to the conveyor chains may also
ment is controlled by cam 97 on the same shaft. Cam
be adjusted to correlate the stop position of each pusher
works against a cam roller 98 carried intermediately
plate 38? with respect to the work station. Such adjust 55
between upwardly extending parallel lever arms 99 which
ment is necessary to ensure appropriately accurate posi
are' swingable about a pivot shaft 100 journalled in the
tioning for the various size containers the machine is to
framing and which jointly carry a roller 101 at
handle. The pinion gear 60 is connected through coupler
their upper ends for wheeled engagement with the hori
sleeves 66A and 60B which are journalled loose on the
conveyor drive shaft 61. Coupler sleeve 60B is in turn 60 zontal arm 92 of the crank arm structure.
Cam 97 works against a cam roller `103 carried inter
connected to a drive wheel 61W which is keyed to the
mediately between upwardly extending parallel lever
left end of shaft 61 to transmit motion from the pinion
arms 104, the bottom ends of which are pivoted about a
60 to the drive shaft.
shaft 105 journalled to the machine framing and the
To provide adjustment of the conveyor position for
upper ends of which carry a roller 106 disposed within
handling containers of different size, the drive wheel 61W 65
the open-sided cage in wheeled engagement wit-h the roller
and coupling sleeve 60B are each provided with a spiral
plate 94K carried by the vertical crank arm.
ling ring of holes H (see FIG. 3), corresponding ones of .
which register to receive a connector pin or screw 61P
Assuming the main drive shaft 37 is rotating clock
wise, as viewed in FIG. 8, it will be apparent from the
for determining each of the various container-delivery
position of cam 96 that the lower die 41 is approximately
positions of the conveyor mechanism.
in its uppermost or container-sealing position, and this
The adjustable container guide plates 65 cooperate with
corresponds approximately to the 264° -line on FIG. 5E.
the adjustable drive connection for the conveyor chains
Upon continued rotation of the drive shaft, cam 97 grad
to completely and accurately define the desired delivery
ually cornes into play to drive roller 106 against roller
position for each container delivered to the work station. 75 plate 94R on ,crank arm 94 and pivot the crank arm
n 3,064,407
structure counterclockwise, as viewed in FIG. 8, to forci
this principle is indicated by the phantom-line illustra
bly retract the lower die 41. During this action, the
cam 96 has rotated sufficiently to permit roller 101 and
tions in FIG. 14.
its lever arms 919 to follow the downward swinging move
ment of crank arm 92 occasioned by the positive driving
action of roller 106. vDuring a dwell period wherein the
lower die is at its lowermost position, the sealed container
is removed and another open container is deposited on
plate 39.
Then the high point on the cam 96 swings
Capping Unit
The capping unit 31 is supported above the work sta
tion on a pair of front posts 130 and a pair of rear posts
131 which extend upwardly from adjacent the front and
rear corners, respectively, of the main framing plate 82.
The posts 130 are connected to the front panel 31=Fof the
capping unit adjacent 'opposite ends thereof While the
around to drive roller 101 in a direction to elevate the
rear posts 131 are connected to the rear panel 31K adja
die '41.
cent opposite ends thereof;
The îstop member 42 is controlled -by a positioning
mechanism which, »as best shown in FIGS. 9, 14 and l5, is
also driven by the main drive shaft 3‘7 through a cam 11€?
mounted on the drive shaft and cooperating with a cam
roller 111 carried on a bell crank 112which is pivoted on
FiG. 16 is a front elevational View of the capping unit
with its lfront panel 31F partially broken away, illustrat
ing the extractor mechanism E in its normal inverted posi
tion above the work station, while FiG. 20 is a corre
sponding View illustrating the extractor mechanism in itsV
a shaft 113 projecting from the side plate 84, with the
semiupright position adjacent and engaging the bottom
bell crank being connected to reciprocate an intermediate
most closure lid L in the lid-supply magazine or hopper M.
vertical rod 114 which extends upwardly through the
For completeness, additional views of the capping unit
main horizontal framing plate 82 for connection to a 20 are included. FIGS. 17, 18 and 19 are plan, right-end ele
cradle structure 115 (see FIGS. 9 and 1G), which is ro
vational, and rear elevational views, respectively, whileV
tatably journalled in a horizontal sleeve 116 welded along
FIG. 21 is a fragmentary exploded perspective view better
the upper extremity of an
main .plate 82. The cradle
contact arm `11S having
along its underneath side
angle iron bracket 117 on the
illustrating the construction.
structure includes an elongated
A main rock shaft 132 extends between the front and
a recess 118B. intermediately 25 rear panels 39E and SIL‘R and rotatably supports a pair of
forming a seat for a biasing
rocker arms 133, the lower ends of which receive a pivot
spring 119 which reacts against the plate 82. The stop
shaft 134, the opposite ends of which are anchored >in
positioning mechanism normally holds the bias spring
parallel extending side yokes 135 that are interconnected
under substantial compression during the time that stop
by a central bridge 136 to complete the movable ex
30 tractor carriage of the capping unit.
The side yokes-135
support outboard guide rollers 137 at corresponding ends
thereof and in spaced relation from the pivot shaft 134;
The rollers 137 operate in guideways 138 provided on
the front and rear panels 30P land 36K, with each of the
tion. Furthermore, the positioning mechanism for the 35 front and rear panels preferably hav-ing a hardened steel
stop is eitective substantially only when the lower die 41
plate 139F and 139R, respectively, mounted on its inside
is in 'its lowermost position.
face and accurately cut out to define the guid'eways 138.
As best shown in FIG. 13, the stop 42 is captive within
The -front and rear panels are each provided with stop
the die 41. It is shown in full lines in its normal retracted
plates 14(3'F and 149K, respectively, which are engage
position within the lower die and it is shown in dotted 40 able with the yok‘es 135 to Vstop the carriage as it swings
lines inits position of maximum extension above the lower
downwardly towards it normal inverted positon.
die. In the illustrated construction, the stop carries an
It will now be apparent that the carriage of the capper
abutment pin `42P which is operable within a slot 41S in
unit undergoes a reversible swinging movement between
the side wall of the lower die to limit the movement of the
its normal inverted position of FiG. 16 and its semi-up
stop with respect to the die to -a prescribed range. A bias 45 right position of FIG. 20, with the position of the car
spring 42S reacts against the pin 4213 to bias the stop 42
riage at opposite ends of its travel being determined by
to its illustrated full-line retracted position.
the guideways 138 in conjunction with the rock and pivot
When the lower die is in its lowermost position, the stop
shafts 132 andr134.
42 is lunder the control of its positioning mechanism.
The carriage and its pivot linkage are desirably low in
During each rota-tion of the drive shaft, as the cam roller 50 weight and the linkage arrangement provides Va Yfactor of
42 is inactive.
Reference tothe timing chart of FIG. 5E shows that
the stop 42 is elevated immediately prior to elevation of
the lower die 41, and this stop performs its locating func
tion during the time when the die is in its lowermost posi
Y 1‘11 drops into the relieved surface 110K of the cam 111i
(see-FIG. 14), the rod 114 moves downwardly to rock
angle multiplication such that a pivot angle of approxi
mately 75° of the rock shaft is translated into approxi
the cradle structure and correspondingly raise the stop
mately 130° of carriage rotation in moving between'its
contact farm 118. Spring 119, which has been held under
pickup and release positions. The carriage is driven ina
compression, expands to assist this movement and provide 55 smooth and continuous motion characterized Vby a-slight
a fast, reliable elevation of the stop 42. Shortly after
angular or peeling movement as it draws away from the
this action occurs, the lower die 41 begins to move up
hopper. This kpeeling movement allows Ythe-lids to be
wardly to pick up the container which has just been lo
withdrawn without requiring‘the added motion step ofV
` cated by the stop and the stop mechanism is then inactive
backing directly away from the hopper. The lowY
until the corresponding point in the next cycle of drive 60 weight’and multiplied angular movement ofthe carriage
' shaft rotation. In FIG. 9, the stop-positioning mechanism
importantly contribute to a high-speed closure machine.
is >shown in its inactive position while in FIGS. 14 and
In addition, the Vcapper unit is of minimum size Ysince the '
15, the stop-positioning mechanism is shown, in full lines,
carriage swing Vis controlled by thershape of the guide
in its active position.
ways which act on the carriage rollers Vin combination
Once again Vit may be noted that the construction-of the
with the >pivot suspension at the opposite side 'of the
closure apparatus ofV this invention, in order to provide
simpliñed conversion thereof for handling containers hav
As best seen in FIGS. 17-20, the operating .mechanismV
.ing a range of size'sjhas provision for releasably securing
` for rocking the carriage between its opposite limit posi
the lower‘die‘to its mountingplate S5. The stop-position
ingV mechanism does not requirer adjustment. Assuming 70 Ytions includes a crank arm 142 fixed to a rear'end pro
jection of therock shaft 132 and pivotally connected
a different size container is; to be handled, -a lower die of
to a vertically reciprocable operator rod 143; VAs shown i
corresponding size is substituted, and it will be under
in FIGS. Zand '4, the operator rod 143 is controlled by
stood that Veachïlowerfdie structure has its own stop ele
ment 42. Due tothe length‘of‘the contact arm 118, this
same contact arm will -wolrk with the larger size die, and
a cam '144 mounted on a rear end extension 37R Vof theV
main cam shaft of the base cabinet. The time Ysequence
of the cam for driving the operating arm 143 is again
shown in FIG. 5E.
The carriage of the capper unit comprised of ’the side
yokes 135 and central bridge 136 carries an upper die
mounting frame 145 (see FIG. 21), the opposite ends
of which are »fixed ‘to the lower ends of the yoke pieces
135, while a vacuum cup mounting plate 146 (see FIGS.
22, 23 and 24) is suspended from the bridge 136 by
The closure machine of this invention provides a syn
chronized movement of containers and closure lids to a
central work station wherein the lids are applied in
dividually to the containers and are sealed with the same
motion. The capper unit mechanism for delivering the
lids includes the upper closure die which is movable with
a reversibly swingable extractor carriage. High-speed
means of a shouldered column 147 which extends through
carriage movement within a small chamber is achieved
a sleeve bearing assembly designated generally `as 148 10 by a unique mechanical movement having a characteristic
carried by the bridge.
smooth and continuous motion.
The vacuum cup mounting plate 146 is located cen
The containers are successively delivered by an inter
mittently operable conveyor mechanism 3S which de- '
posits containers individually in accurate location on the
trally within the mounting frame 145 and is movable
therethrough a distance D indicated in FIG. 23 between
the upper end of the shouldered column 147 and the
support platform 39. This container support platform is
sleeve bearing 148. The angular position of the vacuum
cup mounting plate 146 with respect to the frame 145
is stabilized by an upstanding guide rod 146G which
projects »through the bridge 136. The vacuum cup mount
ing plate 146 carries corner brackets 146B, the outer ends
recessed within the pot-shaped lower die 41, and this
arrangement permits upward movement of the lower die
to elevate the container into engagement with the upper
of which are apertured to receive vacuum cups 146V,
the stems of which are slideable through the brackets
in it and this stop is momentarily elevated above the con
tainer platform to determine the position of the con
die and the closure lid carried in association therewith.
The lower die has a container stop slideably incorporated
and terminate in shouldered connection ñttings 146F for
the ñexible tubing 146T. Bias springs 1468 are provided
tainer. The conveyor mechanism has adjustable facilities
for adapting it to containers of other sizes, and the upper
between the vacuum cups 146V and their support brackets 25 and lower dies are exchangeable conveniently to complete
146B to normally urge the vacuum cups downwardly
the conversion of the machine with but a minimum of
until the shouldered fittings 145F abut the brackets 146B
time and extra part requirements.
(see FIG. 24). This spring-loaded vacuum cup arrange~
The mode of operation of the machine is characterized
ment accommodates as much as a 1A” warp on the cover
by its high speed resulting from the fact that the cover
lind without impairment of the cover pickup operation. 30 lid application and sealing is accomplished by an inte
The upper die 40 -is suspended from the frame 145
grated sequence of operations carried out at a single work
by a plurality of shouldered mounting pins 150 which
station. This equipment is particularly advantageous
limit movement of the die relative to its mounting frame.
since it applies and simultaneously seals the closure lid
The mounting frame includes a plurality of inverted cup
across the container, and therefore problems of spillage
shaped housings 14511 having bias springs 1458 seating
and contamination are minimized. In addition, perfect
against the die to normally urge it downwardly from the
registry of the closure lids is ensured. The control mech
mounting frame to the position in which the parts are
anisms for each of the operations comprising the closure
illustrated in FIG. 24. It will also be noted that a
and sealing cycle are all controlled and actuated from
spring 151 reacts between the sleeve bearing assembly
cams carried on the drive shaft 37 .
148 and the vacuum cup mounting plate 146 to urge this 40
plate outwardly through the die 40. Plate 146, acting
Alternate Closure Unit
under the force of the spring 151, acts to eject the con
tainer and closure lid from the top die 40 into the `lower
die 41 during parting movement of the dies. Similarly,
the vacuum cups are projected to their full extent be
To illustrate that the mechanism of the base cabinet has
utility independent of the specific capping unit, an alter
45 nate capping unit for use with the conveyor and lower die
neath the mounting plate.
mechanisms is shown in FIG. 25 wherein the front and
rear support posts 130 and 131 are illustrated for purposes
lt will be apparent from a consideration of FIG. 24
of orientation. With this arrangement, the support posts
that a cover lid is normally contacted only by the
carry a header plate 160 having a depending locating
vacuum cups which project beyond the die 40 and that 50 stud 160s and anti~rotation pin 16üP for registry with
when the lower die 41 brings the container upwardly to
corresponding openings in a locating plate 161 that is se
receive and seal against the closure lid, the vacuum cups
cured along the underneath face of the header plate by a
146V yieldably retract to permit `the upper die to engage
plurality of bolts 161B. A die-mounting plate 145 is
against the closure lid L. As the lower die continues
rigidly connected beneath the locating plate 161, with
its upward movement, the vacuum cup mounting plate 55 spacer bars 162 of appropriate size interposed therebe
146 will also retract as required and ñnally the upper
tween and establishing the connection. The die-mounting
die 44) will retract as the closing pressures increase. It
plate 145 supports an upper die 40 of a construction cor
will be understood that the vacuum cups must release
responding with that of the upper die of the preferred em
their suction grip upon the lid immediately prior lto the
bodiment, and once again the upper die is suspended from
lower die reaching its uppermost point of travel, as indí 60 its mounting plate by a plurality of shouldered mounting
cated in the timing chart of FIG. 5E. The flexible tubes
pins 150 to accommodate limited die movement, with the
which apply suction through the vacuum cups are con
trolled by a valve (not shown) that has a timing cam
(not shown) associated with the main drive or cam shaft
37. Finally, the upper die 40 has a plurality of lancing 65
punches 152 projecting through its flat inner face and
operable during the ñnal closure of the dies to pierce the
bent~over vertical container flange and the closure lid
die normally ëbeing biased downwardly by the springs
The upper die mechanism is again shown as in
cluding the lancing punches 152.
With this construction wherein the upper die is essen
tially stationary except for limited yieldably resisted verti
cal movement during closure, it is contemplated that the
closure lids would be applied either manually or auto
matically while the containers are on the approach section
about the container. The bias springs which seat against 70 of the conveyor. Thus the containers are deposited on the
support platform with the closure lid already in place and
the upper die 49 are strong enough to allow full die
the upper die then carries the container and its closure lid
closure to take place before the lances 152 are operative
into mating, sealing engagement with the upper die.
and then to strip the container and closure lid from the
The foregoing description and the drawings are given
lancing punches.
75 merely to explain and illustrate the invention and the
and form a ysecure mechanical interlock at spaced points
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