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Патент USA US3065686

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Nov. 27, 1962
D. B. LoEsER ETAL
3,065,676
CONE CUP MAKING MACHINE
Filed July 2l. 1960
5 Sheets-Sheet 1
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INVENTORS
Dan/no 6. ¿05.552
BY
RE BaDeA/omsef-Ee
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Nov. 27, 1962
D. B. LoEsER ETAL
3,065,676
coNE CUP MAKING MACHINE
Filed July 2l, 1960
5 Sheets-Sheet 2
/05
IN VEN TORS
00A/QL D 5. Á 0555A’
BY EE. ô’ooefvDoE-QFEE
Nov. 27, 1962
D. B. Lol-:SER ETAL
coNE CUP MAKING MACHINE
Filed July 2l, 1960
3,065,676
Nov. 27, 1962
D. B. LoEsER ETAL
‘
Filed July 21, 1960
3,065,676
coNE CUP MAKING MACHINE
5 Sheets-Sheet 4
/OO
Nov. 27, >1962
D. B. Lor-:SER ETAL
3,055,676
coNE CUP MAKING MACHINE
Filed July 21. 1960
> y5 Sheets-Sheet 5
0„”ffl.
.lawi1§\n
IN VEN TOR."
DaA/HL@ 5. ¿05552
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attains
“aired States Fatent "
l Patented Nov.` 27, 1962
2
l
FIGURE 4 is an enlarged side view of the blunter;
FIGURE 5 is an enlarged sectional view of the man
drel and presser cone as shown generally in FIGURE 3;
FIGURE `6 is a sectional view taken along line 6-6 in
FIGURE 5, but on a reduced scale;
FIGURE 7 is a view taken along line ’7_7 in FIGURE
entame
CUNE CUI? MA1-@NG MACHINE
Donald B. Losser, Thiensviiie, and Raymond E. Boden
doerfer, Milwaukee, Wis., assignors to Paper Machin
ery Corporation, Milwaukee, Wis., a corporation of
Wisconsin
'
Filed July-21, 1960, Ser. No. 44,368
3 Claims. (Cl. 93-36.2)
5,`but on a reduced scale;
in iuGUnn 1;
Pthis invention relates to machines for making paper
cone cups.
`
’ .
-
FIGURE 9 is a schematic diagram of the drive for the
various parts of the machine.
FIGURE l0 is a sectional view of the rotary cutting
wheel shown in FIGURE l;
FIGURE ll is a sectional view through a portion of a
cup formed on the present machine, and
,
The general nature of machines of the type to which
this invention relates utilizes a conical forming mandrel
which grips a blank and is then rotated to thereby wrap
the blank therearound, thus forming a conical cup. Dur
ing the Wrapping process, a presser cone holds the blank
tightly against the mandrel to create a smooth and prop
erly shaped and sized cup. A blunting tool then crushes
the sharp apex of the cup into a smooth and rounded end.
In the formation of cups by machines of this character,
the apex of the'cup contains more layers of paper than
are formed at the heel or open end -of the cup.
-
FIGURE 8 is a sectional view taken along line 8-48
'
FIGURE 12 is a view of a finished cup formed on the
presentmachine.
'
The cup forming machine comprises a mandrel unit M,
blunter unit B, and a feed and cutter unit FC, all of which
are mounted on a suitable base frame top 10 located at
any desired height abovethe iioor. A master motor 11
furnishes driving power to all of the units as indicated in
This
occurs because of the shape of the blank
tional material at-the apex portion for
blunting the apex to insure a sealed tip.
there may be three and one-half layers
FIGURE 9.
'
=
which has addi
reinforcing and
In the general operation of the machine, the web W
In other words, 25 of paper is fed from a supply source (not shown) and
of vpaper at the
may, if desired, be printed with a suitable design by a
printer which is not shown but which may be driven by
apex and only one and two thicknesses at the open end.
r.this non-uniformity of cup wall thickness has> presented
a shaft 12 (FIGURE 9). A glue pattern is applied to
the web which then passes through the cylindrical cutter
diiiiculties heretofore in enabling the presser cone to
apply uniform pressure along the length of the` mandrel, 30 roll 13. The cutter cylinder forms a portion of the blank
rather than, for example, high pressures on the tip only.
outline, as shown in FIGURE l, including the loading
In accordance with the present invention, an improved ' edge .14 of the blank.
The leading edge of the partially formed blank is then
cone-cup making machine of the above general type has
precisely presented to the mandrel and is grasped by the
been provided in which the presser cone is mounted for
swinging toward and away from the forming mandrel in 35 mandrel’s vacuum action. Rotation of the mandrel causes
such a manner that uniform pressure is always exerted by
the blank to be wrapped therearound in cooperation with
the pressing roll along the entire length of the cup being
the presser roll which has been swung against the blank
and is spring biased thereagainst. While wrapping is tak
formed.` The arrangement is such that the disproportional
ing place, the rotary cutting wheel y15 cuts and completes
growth of paper thicknesses along the length of the man
drel is compensated for.
t 40 the top edge of the cup and completely separates the
More specifically, the presser roll is pivoted for swing
blank from the scrap. The blunter tool is then forcibly
ing movement relative to the mandrel at a point located
a considerable distance from the mandrel tip and along
a line which lies between the line of contact of the man
drel and presser cone. With such a pivotal mounting and 45
location therefor, as the presser cone swings away from
the mandrel, the tip of the cone moves at a greater rate
than the cone heel, thus accommodating additional thick
slid into position to crush the cup apex and is then im
mediately slid out of the way. A blast of compressed air
from within the mandrel then forcibly ejects the finished
cup, which drops into the stacking trough T. -
`>
movement between the contacting sides of the mandrel and
Mandrel Unit
Referring in greater detail to the drawings, a mandrel
unit housing 20 is secured to the frame top 10 andl has a
mandrel shaft 21 rotatably mounted therein in a fixed
presser cone, unequal pressure build-up therealong is
position by means of anti-friction bearing members 22, 23
nesses of paper at the tip. Thus, by avoiding parallel
and 24. A gear 25 is fixed to shaft 21 and is‘in constant
Another aspect of the invention provides a pressure
mesh> with a Worm gear 26 fixed to the main drive shaft
cone mounting of the above type in which the drive for
27. The mandrel shaft 21 is adjustably and accurately
rotating both the mandrel and the presser cone is located 55 positioned in its bearings by the adjusting nut 28.
concentric with and forms the axis for the common drive
A conical mandrel 30 is removably secured on the outer
eliminated to a substantial extent.
worm gear. The driven gears for the mandrel and cone
are always in constant mesh at their pitch line which re
end of the mandrel shaft and is rotatably driven by the
mandrel shaft from the worm gear 26. A plenum cham
sults in a smoothly operating and trouble-free drive mech
ber 31 extends longitudinally along one side of the
60
anism.
mandrel’s periphery and is in communication with a cen
These and other objects and advantages of the present
invention will appear as this disclosure progresses, refer
ence being had to the accompanying drawings, in which:
FIGURE l is a plan view of a cone cup making ma
chine embodying the present invention, certain parts being
broken away or in section for clarity;
FIGURE 2 is a front elevational view of a portion of
tral vacuum passage 32 by means of a series of cross
" ports 33. Passage 32 then communicates via port 34 with
an annular chamber 35 in the housing. Chamber 35 is in
65 turn in communication with a source of vacuum via con
duit 36 extending from chamber 35.
The mandrel also has a compressed air passage ‘37 from
which passages 38, 39 and 40 extend to the plenum cham
ber and to the opposite peripheral side of the mandrel.
the machine shown in FIGURE 1, taken generally from
the line 2_2 in FIGURE l;
FIGURE 3 is a side elevational view of the machine 70 Passage 37 . is in communication via the cross port 41
with another annular chamber 42 formed in the housing
shown in FiGURE l, taken generally from the line 3-3
and around the shaft. A conduit 43 is in communication
in FIGURE l;
ì N
t
t
3,065,676
with chamber 42 and places it in communication with a
rounded tip of the mandrel. Thus, the sharp point of the
source of air pressure.
cup is crushed into a rounded point and rotation of the
As will more fully appear later, two separate passage
way systems are thereby formed in the mandrel, one for
cup with the mandrel smoothly finishes it.
vacuum to hold the blank on the mandrel and one for air
pressure to eject the finished cup from the mandrel.
A presser cone housing 45 is pivotally mounted on
mandrel housing 20 for swinging movement about shaft
27 as an axis. More particularly, the pair of annular
shoulders 46, 47 (FIGURE 6) of the housing 45 is
carried in complementary bearing grooves 48, 49 in the
housing 20. Wiper seals 50 (FIGURE 5) complete the
seal between the housings. A presser cone 51 is rotatably
carried in its housing by means of its shaft 52 journalled
in anti-friction bearing members 53, 54 and 55. A gear
56 is fixed to shaft 52 and is in constant mesh with the
worm 26, regardless of the position to which the housing
The teeth 76 of the rack are in engagement with the
gear 77 fixed on shaft 78. Another gear 79 is also fixed
on the other end of shaft '78 and is in constant mesh with
the teeth on a vertical rack 81. At the upper end of the
rack 81, another gear 82 meshes therewith and gear 82
is fixed to a shaft 83. A third rack 84 meshes with an
other gear 85 fixed on shaft 83. A cam follower 86 is
secured to the end of rack 84. A cam track 87 is formed
in one side of a disc 88 and this track rides over the
follower as the disc is rotated. Disc 88 is fixed to gear
89 which in turn is fixed to shaft 90. Rotation of shaft
90 causes rotation of the cam track which in turn causes
reciprocation of the follower 86 and its rack 84. A cut
away portion 91 forms a yoke for the rack so the shaft
45 and its presser roll have been swung.
90 can extend through the yoke portion of the rack.
The swinging of the presser cone is accomplished
Drive Means
through a yoke 57 which forms an integral part of the 20
cone housing 45 and extends downwardly therefrom into
The driving power for the machine is furnished from a
the mandrel housing 20. The lower end of the yoke has
single source, such as, for example, the electric motor 11.
a swivel socket by which it is swivelly connected to a
The main drive shaft 27 has the worm 26 fixed thereto
lever 58 pivoted at 59 in the housing 20. The lever 58
for driving both the mandrel and presser cone as de
has a cam roller 60 mounted thereon which follows the 25 scribed. The mandrel shaft 21 and its gear 63 furnish
peripheral surface of a cam `61. Rotation of the cam 61
the drive to the cutter wheel shaft 67.
and the shaft 62 to which it is fixed causes the yoke to
Main shaft 27 also has another worm 93 fixed thereon
swing away from the mandrel and permits the yoke to
which is in constant mesh with the gear 94. Gear 94 is
swing toward the mandrel under the influence of a spring
fixed to shaft 62 on which is fixed the cam 61.
63. The spring 63 acting between the inside of housing 30
Shaft 62 also has another cam 95 fixed thereto which
20 and the yoke urges the latter to the cone closed posi
actuates a plunger 95 o-f a conventional two-way air valve
tion against the mandrel, to resiliently hold the cone in
97. This valve controls the compressed air blow-olf for
firm pressing engagement against the mandrel, more par
the mandrel. The arrangement is such that a blast of
ticularly against the blank on the mandrel.
air is delivered every fourth revolution of the mandrel.
The worm 26 drives both the mandrel 30 and cone 51 35
The ratio between the worm 93 and gear 94 is four to
in synchronization and is in constant mesh therewith at
one, that is, the worm 93 makes four revolutions for
the proper pitch line to insure a smoothly operating drive
every one of the gear 94. Thus, the cone is lifted from
and accommodate swinging of the presser cone relative to
the mandrel every fourth revolution of the mandrel and
the mandrel.
during which fourth revolution the compressed air blast
The location of the presser cone pivot point back of 40 occurs.
_the heel of the cone and at a considerable distance there
The mandrel makes four revolutions in forming a cup,
from, and furthermore along an extension of the line of
and the compressed air blast Occurs every fourth revolu
tion.'
contact between the mandrel and cone, is important.
Such a location permits the tip of the presser cone to
The cutting wheel 15 always is against the mandrel
move at a greater rate than its heel, in respect to the
mandrel. In this manner, as a greater number of layers
of paper are built up on the tip of the mandrel than at its
heel, as will appear more fully, the cone tip in moving a
and begins cutting as soon as the blank comes in contact
therewith.
Power is furnished to the feed and cutter unit FC and
to the printer shaft 12 through a conventional right angle
greater distance from the mandrel than does the cone heel,
gear box 100 which is fed by the shaft 62. Shaft 90 ex
compensates for the uneven growth of paper thicknesses 50 tends from the gear box and furnishes the drive as pre
along the mandrel. A uniform pressing pressure along
viously described for the blunter unit at the other end
of shaft 90.
the mandrel is thereby provided. This results in an
accurately formed and smooth cup and eliminates con
As shown in FIGURE 9, power is transmitted from
centrated pressure build-up at any one point on the cup
gear 89, via gears 102 to 108 to the cutting cylinder 13,
or mandrel.
anvil roll 109, and back-up roll 110. The glue wheel
Also mounted on the mandrel housing 20 and closely
111, backing roll 112 for the glue wheel, and glue trans
adjacent the heel of the mandrel is a rotary cutting ele
fer roll 113 are all suitably driven as indicated in FIG
ment in the form of the wheel 1S having a cutting edge
URE 9. As these rolls and drive therefor form no part
15a. The wheel is carried by the mounting disc 65 fixed
of the present invention, further reference to them is
on shaft 66, and a garter spring 67 acting between the 60 deemed unnecessary.
disc and wheel biases the latter tightly against the heel of
the mandrel. The shaft 66 is journalled in anti-friction
bearings 66a, 66b and 66e and has a gear 67 fixed thereto.
Gear 67 is in constant mesh with the gear 68 fixed on
mandrel shaft 21, and thereby the cutter wheel is driven
in synchronization with the mandrel.
Operation
As the web W moves through the cylindrical knife 13,
only a portion of the cup blank B is formed as indicated
in FIGURE l by the straight diagonal line 115 and the
irregularly shaped line 116 along one edge of the web.
A ribbon of scrap S is formed along the side of the
blanks and is fed continuously through the machine and
easily disposed as a continuous ribbon.
A blunting tool 70 is mounted for reciprocation in co
The leading edge 14 of the blank B is precisely pre
axial alignment with the axis of the mandrel. The tool is 70 sented to the mandrel and is gripped by the action of the
mounted in a bore 71 in the reciprocable gear rack 72
vacuum chamber. Rotation of the mandrel causes wrap
and can slide therein within the limits defined by the pin
ping of the partially formed blank around the mandrel
73 and slot 74 which form a sliding connection between
at which time the cutting wheel 15 in trimming the top
the tool and rack. A spring 75 urges the tool- to the ex
edge of the cup actually completes the formation of the
tended position and acts to firmly hold the tool lagainst the
cup blank while the latter is being wrapped. The wheel
3,065,676
5
it?
'actually cuts along the dotted line 122 as the partially
formed blank is wrapped around the mandrel.
The generally triangular piece 123 of scrap, formed
between lines 115 and 122, is therefore not cut from the
blank portion until the latter has been wrapped on the
blast, it is immediately available for gripping the next
blank.
A particularly compact and efñcient cone cup machine
has been provided by the present invention.
Various modes of carrying out the invention are con
mandrel.
templated as being within the scope of the following claims
The scrap piece portion 123 aids in guiding the im
mediately preceding blank portion into precise register
particularly pointing out and distinctly claiming the
subject matter which is regarded as the invention.
'What is claimed and desired to be secured by Letters
As the triangular scrap piece is cut, it moves to the 10 Patent is:
right as viewed in FIGURE l, and because it has moved
1. in a cone cup making machine having a rotatable
past the mandrel when it is ñnaily severed from the blank,
conical mandrel around which a paper blank is adapted
it is at a location where it drops free of the mandrel unit.
to be wrapped, a presser cone pivotally mounted about an
In this manner, all scrap pieces are positively moved
axis for swinging to a _position in which said cone bears
through the machine without fouling any moving parts. 15 against the blank on the mandrel for smoothing the blank
FIGURE 11 indicates the Various thicknesses of paper
and `forming it `against the mandrel, means for positively
of which the cup is comprised along its length. FIGURE
swinging said cone about said axis to a position away
12 also shows these various layers of paper.
from said mandrel, said pivotal axis being located a dis
As the mandrel is rotated three revolutions, the presser
tance spaced from the base end of the conical mandrel,
cone resiliently bears ñrmly against the blank being 20 which distance is greater than the length of said mandrel,
formed into a cup. As the cup is being wrapped, the pres
Said axis being in a plane which passes through the line
with the vacuum chamber.
sure cone moves slightly away from the mandrel about
of contact between the mandrel and cone when they are
the pivot shaft 27. As shown in FIGURE 11, that por
in contact with each other, each of said mandrel and
tion of the cup wall adjacent the apex grows thicker than
cone having a shaft with which it is rotatably driven, a
does the heel portion, due to the additional wraps of paper 25 drive shaft located in coaxial alignment with said axis,
adjacent the apex. As the cone tip is located farthest
and constant mesh gear means between said drive shaft
from this pivot shaft, and because the pivot axis is located
and said mandrel and cone shafts.
on the line or in the plane containing the line of contact
2. A machine as set forth in claim 1 including, means
between the presser cone and the mandrel when they are
for resiliently biasing said cone toward said mandrel.
together, the cone tip moves a greater distance from the 30
3. The arrangement as claimed in claim 2, further
mandrel than does the cone heel. In this manner, the un
characterized in that said means for positively swinging
equal growth of paper thickness along the mandrel is
said cone includes a driven cam which is adapted to
compensated for. A more uniform pressing pressure
cause said swinging once for every predetermined num
thereby results on the cup.
ber of revolutions of said mandrel.
After the cup is wrapped, that is after the third revolu 35
References Cited in the file of this patent
tion of the mandrel, the blunter is quickly brought in
UNÍTED STATES PATENTS
crushing engagement with the cup apex and stays in
contact therewith for only a short period of time, approxi
1,174,716
Haynes et al. _________ __ Mar. 7, 1916
mately during only about one-fourth of one revolution
1,257,949
Adelson ______________ __ Feb. 26, 1918
of the mandrel, to thereby burnish the end slightly. The 40 1,273,497
Jennings _____ __' ...... __ July 23, 1918
blunter is then retracted quickly to permit cup ejection.
1,610,191
Barbieri _____________ __ Dec. 7, 1926
After the cup has thus been formed, and during the
1,697,240
Hartzell _____________ __ Jan. 1, 1929
fourth revolution of the mandrel, the cone is lifted away
2,203,515
Barbieri _____________ __ .lune 4, 1940
from the mandrel and the compressed air blast is actuated
2,240,501
Greenhill ____________ __ May 6, 1941
45 2,385,604
to blow the cup oif into the stacking trough T.
Brewer ____________ __ Sept. 25, 1945
As the vacuum has never been turned off, but rather is
2,684,117
Wood _______________ __ July 20, 1954
only momentarily overcome by the short compressed air
2,796,933
De Gelleke __________ __ June 25, 1957
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