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Патент USA US3079854

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March 5,\ 1963
E. J. E. Powz-:LL
3,079,845
MACHINES FOR FoRMING cARToNs
Filed Dec. 5. 1960
5 Sheets-Sheet 1
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March 5,' 1963
E. J. E. POWELL
3,079,845
MACHINES FOR FORMING cARToNs
Filed Dec. 5, 1960
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March 5, 1963
E. J. E. PowELL'
3,079,845
MACHINES FOR FORMING CARTONS
Filed Dec. 5, 1960
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.5.1. E. POWELL
3,079,345
MACHINES FOR FORMING cARToNs
Filed Dec. 5. 1960
5 Sheets-Sheet 4
March 5, 1963
3,079,845
E. .1. E. POWELL
MACHINES FOR FQRMING cARToNs
5 Sheets-Sheet 5
Filed Dec. 5. 1960
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3,079,845
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for this purpose either or both the mandrel 3d or die 50
aligned with the body supporting members 63 and also
in axial alignment with these guide apertures 74 are .cap~~
may beelectrically heated. The body forming machine
may have l0 or as many as 30 heads, i.e. body formers 3
and the table or support 2 is constantly rotated. It may
be rotated in any suitable plane from horizontal to ver
tical, the plane of ancillary movement conforming ac
cordingly. The plant under present description has its
turrets rotating in a horizontal plane.
At the ilrst station, the carton blank will be wrapped
ping heads 75 which are spring-loaded at 76, cam con
trolled and capable of axial movement in a Vertical plane
by means of a follower 77 which engages a cam track 78
provided on a ñxed upper flange member 79 keyed at 80
to the central pillar 81. Within the capping head 75 is
a reciprocal expanding mandrel 82 whose expansion and
contraction is controlled by means of a lever 83 and
or folded around the body former and as it passes through 10 follower 84 which engages a further cam S5 on the iixed
succeeding stations the heat sealing of the carton vbody
takes place and at the station following the wrap round
station the closure is applied and heat sealed over several
stations, after which the mandrel 31 is retracted, the die
upper flange member 79.
Alternatively, hydraulic or
pneumatic means can be employed for this purpose.
The guide apertures 74 constitute forming dies for the
closures which are laid in blank form (not shown) over
5€.’ lowered and moved to one side on the cross-head 43 15 the apertures 74, which have radiused guide faces on their
so that the carton body closed at one end can be caused
upper surfaces causing the blanks to be Íormedinto end
to drop off the body yformer by mechanical or pneumatic
means onto the conveyor which takes it to the vi'illing
machine.
g
The body former 3 may be supported against pressure
exerted by pressure plate 21 which heat seals the carton
body seam by causing the pivotal clamp 4 opposite to en
gage a cam 53 (FIGURE 2) which prevents its outward
movement for part of the rotation of the machine e.g.
closures by the downward action of the collapsed capping
head 75. The continued downward movement of the
capping head inserts the closure within the ycarton body
“B” after it has been indexed upwardly by the supporting
platform 68 until its upper edges have registered against
a “step,” over which in the downward direction, the clo
sures register within the perimeter of the carton wall, and
are heat-sealed to the carton bodies vby the rexpansion of
during the period which heat sealing of the carton body 25 capping head segments (54 in FIGURES 3 and 4) against
takes place.
the heated retaining dies 74. After a due period of pres
The table or support 2 will be driven by means of a
suitably positioned electric motor (not shown) and the
sure and heat dwell the capping head collapses and moves
further downward to eject carton in an inverted position in
various cams referred to control the sequence of opera
unison with the downward retraction of supporting plattions in accordance with the rotation of the table or sup~ 30 form 68 (FIGURE 6).
port.
The undersides of the forming dies 74 are provided with
The expandible portion of the mandrel 31 is shown in v
detail in FIGURES 3, 4 and 5 and the expanding portion
32 comprises four metal segments S4 complementary to
inclined guiding edges or “leads” 86 for leading the top
edge of carton body “B” up to its step-stop location.V
In order that the closure may be heat sealed to the body
one another and of similar shape to the carton body. The 35 the capping head and/or the forming dies will be elecsegments 54 are slidably mounted for movement in a ra
trically heated during the rotation of the machine.
dial direction and are interconnected by mechanical means
What I claim is:
'
(FIGURE 5) tending to move them radially inwardly
into retracted position. The segments are guided in their
l. A machine for forming cartons comprising a table
rotatably mounted about a vertical axis, a plurality of
radial movement by providing them with studs 55 or 40 body formers suspended from the underside of said table
guides which are slidable in slots 56 in the base member
in spaced relation about said table, each of said body
57 and further the adjacent side edge-s of the segments 54
formers comprising a mandrel having radiused corners
are formed with interengaging fingers or the like 58 so
and a die ,member associated therewith, a iirst clamping
that there is no gap between the adjacent segments 54,
means for each of said body formers to hold and fold
and even in expanded position they -will present a con 45 a dat, heat-scalable blank about the associated body
tinuous peripheral edge, i.e. pressure face for engagement
former, means for mounting one 4of said clamps pivotally
with the adjacent part of the wall or flange of the end
yon a horizontal axis above said table at the front of said
closure.
Sealing faces 59 may be toothed, grooved,
body former whereby said one clamp holds and positions
a blank for folding about said body former, means for
In order to eiîect expansion of the segments the base 50 mounting another of said clamps at the side of said body
57 is provided with a central recess 60 in which a “four
former about a vertical axis relative to said table `for
throw” cam 61 is mounted for rotary movement in direc
moving said other clamp to fold the blank along a longi
tion normal to the radial movement of the four segments
tudinal edge, a stationary pressure member carried by
54. Alternatively, hydraulic or pneumatic means can be
said table which coacts with the side of each body
applied for thispurpose. The segments 54 are returned
former bearing vagainst the pressure member and the
inwardly on reversal of the rotary cam movement by rea
inner overlapping longitudinal seam of said blank and
son of the provision of eccentrically mounted slots 62 in
said other clamp to seal said blank, wvhereafter said die
a ring 63 fixed to the shaft 30 on which ring the segments
member permanently sets the tube formed from said
are slidably mounted by means of guiding spigots 64.
blank at its radiused corners, blank fee-ding means for
The above description describes the application of a 60 the tubular body Vblank and blank feeding means for
cap-fitting closure. Little modification is required to.con~
the top closure, table rotating means for moving said
and/ or rubber clothed.
vert the machine to one suitable for applying an inserted
or push-in type closure.
Y
table at a constant rate of speed which is synchronized
with said blank feeding means for successive formation
FIGURES l6` and 7 illustrate a modiñed form of ma
of tubular, permanently set body blanks on said body
chine and mandrel capable of applying this type of closure. 65 formers at a continuous rate, means on said table to auto
In FIGURE 6 upper and lower spaced circular rotatable
matically form, seal and cap the tubular body in the body
platforms or tables 65, 66 are provided adapted to be ro
formed position, and means for removing the capped and
tated by means of an electric motor (not shown) driving
formed container from the mandrel.
,
a toothed wheel 67 beneath the lower platform 66.
2. A machine as claimed in claim l wherein means
The lower platform 66 has a plurality of body support 70 are provided to swing the mandrel towards and away
ingmembers 68 each mounted on a spring-loaded shaft
from the ñrst pair of ñxed body~forming clamps.
69 at the lower end of which runners 70 engage stationary
cam tracks 71 mounted on a base plate 72 of the machine.
The upper platform or table 65 carries a flange 73
formed with a plurality of guide apertures 74 axially
3. A machine as claimed in claim 1 wherein means
are provided to swing the second pair of body-forming
clamps towards and away from the mandrel, including
a lever and link mechanism in which the links are car
3,079,845
5
6
ried on a lever actuated from a follower engaging a sta
body, the segments being slidably mounted for movement
tionary cam around a ñxed column which surrounds the
in a radial direction and interconnected by mechanical
means tending to move them radially inwardly into seal
Vertical axis of rotation.
4. A machine as claimed in claim 1 wherein said pres
sure member is mounted on a power-loaded swinging
arm in bearings attached to and beneath said table and
there is provided at the free end of the plunger, a fol
lower Which engages a stationary cam formed on the
outer casing surrounding the machine.
ing position, a housing member provided with slots for
guiding said segments in radial direction, said segments
being provided With studs slidable in said slots in said
housing member, the adjacent side edges of the segments
being formed with interengaging fingers to close the gap
between the adjacent segments in the retracted position
5. A machine according to claim 1 wherein said man 10 of said segments in order to present a continuous pe
ripheral edge for engagement with the adjacent parts of
drel swings to a position above the die member which
the end closure causing the latter to make intimate radial
rises and collapses onto the end of the formed carton
contact over the entire carton Wall periphery.
body to form and heat seal a cap carried by said die mem
ber onto the carton body.
References Cited in the ñle of this patent
6. A machine according to claim 5 wherein said die 15
member comprises a split, cupped die for carrying and
applying the closure blanks, said die being carried in the
same peripheral path as that taken by the mandrel when
carried at its maximum radius.
7. A machine according [to claim 6 wherein the split, 20
cupped die comprises four metal segments complemen
tary to one another and of shape similar to the carton
UNITED STATES PATENTS
2,168,543
Vergubbi ______________ __ Aug. S, 1939
2,414,268
Moran _______________ __ Jan. 14, 1947
2,585,031
2,726,583
Odquist et al __________ __ Feb. 12, 1952
Barnes et al. _________ __ Dec. 13, 1955
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