JP3499464B2 - Method and apparatus for supplying package blank - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge lid type pad.
The package blanks to be formed as a click housed in a stacked state in the hopper, to a supply method and supply device of the package blanks supplying package blanks from the hopper to the feeding to the packaging machine one by one.

[0002]

2. Related Background Art This type of package blank is supplied one by one in synchronism with the operation cycle of the packaging machine. Since continuous supply is possible, for example, Japanese Patent Laid-Open No. 3-620. The continuous feeding method disclosed in the publication is known. In this known continuous feeding method, package blanks are stacked and housed in a hopper, and the lowest package blank is adsorbed by an adsorption pad from the outlet of the hopper and fed out one by one. The blank is delivered to the next conveyance roller and conveyed. Here, the suction pad reciprocates between the hopper outlet and the conveying roller to enable continuous feeding of the package blank, and the conveying roller receives the package blank on the outer peripheral surface thereof at a constant interval. Therefore, the continuous transfer is realized.

[0003]

[SUMMARY OF THE INVENTION However, in this type of package blank, just fold line and flap portion for subsequent folding molding is formed
In some cases , only one side is laminated and printed. Therefore, due to the structure of the package blank, it is difficult to keep its shape completely flat against changes in atmosphere such as temperature and humidity.

Therefore, for example, a rectangular package blank used for a hinge-lid pack (hard box) of cigarette products is likely to be deformed particularly in the longitudinal direction due to changes in temperature and humidity during storage . Hand, such a package blank are usually stored in a state of bundling the girth stacked every predetermined number of sheets, although this bundling portion is constrained deformation, the end portion protruding from bundling the Since the deformation is allowed , the end portion may largely curl upward (curl) during storage.

Such warpage of the lid portion occurs uniformly in all of the package blanks stacked in the hopper, and therefore, in the package blank at the lowest position.
The lid part is largely peeled upward from the hopper outlet. In such a situation, when the package blank is paid out by the suction pad, the suction pad cannot be completely brought into close contact with the lid portion . In this case, the suction failure of the suction pad interferes with continuous feeding of the package blank, and the operation of the entire system from the package blank supply device to the packaging machine is stopped and the operating rate of the entire system is reduced.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to ensure a feeding operation by a suction pad regardless of whether or not the package blank is deformed and to provide a stable package blank. It is an object of the present invention to provide a package blank supply method and a supply device thereof that enable continuous supply.

[0007]

In the method and apparatus for supplying a package blank of the present invention (claims 1 and 2), the package blanks are accommodated as a laminated body in which the package blanks are vertically laminated in a hopper having a downward facing hopper outlet. and, and, this
Exits hopper stacked end corresponding to the lid portion of the product Sotai
Place it between a pair of rollers near the mouth, and
By applying a compressive force to the hopper exit direction by the rotation of the la, the stacking height of the lower part of the stack from the hopper exit is kept uniform. And the package blank
Is adsorbed by a plurality of adsorption pads, and 1 from the hopper outlet
It is fed out one by one, but at this time, one of the suction pads
Adsorbed on the lid part of the package blank
The package blank is supplied to the packaging machine through a predetermined transport path.

In the case of the supply device (claim 2), the suction pad is provided below the hopper outlet, and its suction surface is opposed to the hopper outlet. Further, the suction pad is reciprocated between the hopper outlet and the transport path by the pad driving means, and while the suction force is given at the hopper exit, the suction force is released at the transport path. The above-mentioned transport path extends from below the hopper outlet toward the packaging machine, and the package blank is transported through this transport path.

According to the above-mentioned supply method and supply device,
Since the stack height with respect to the lower portion of the stack of the package blanks are maintained uniform, the individual suction pads can be fully brought into close contact with the bottom of the package blank in the hopper outlet, ensured by the suction force The package blank can be delivered from the hopper outlet. In addition, the delivered package blank is released from the suction pad and delivered to the transport path, and then transported to the packaging machine. Therefore, by repeatedly delivering the package blank and transporting the package blank as described above, the package The blanks are continuously fed to the packaging machine.

Further, in the case of the feeding device, the rotation of the pair of rollers is caused by the continuous feeding of the package blank.
Stacking of stacks without obstructing the stack 's descent in the lid
A compressive force can be applied to the ply ends and the rollers do not interfere with the filling operation of the package blank into the hopper.

Further, the compression force can be adjusted by changing the rotation speed of the roller (claim 3 ).
An appropriate compression force can be set according to the deformed state of the package blank and the operating speed of the supply device. Further, preferably, the outer peripheral surface of the roller is knurled (claim 4 ), and the coefficient of friction between the outer peripheral surface and the side surface of the laminate is appropriately increased.

Further, the above-mentioned pair of rollers are provided at the end of the laminated end.
The edges are sandwiched, and the tip of the stacking edge is
Inner Freon folded back to form the front inner wall of the hood
It is a to flap portion (claim 5 ). In this case, since the inner front flap portion is located at one end in the longitudinal direction of the package blank, the deformation amount is the largest due to the relationship with the band sealing position, and the inner front flap portion applies the compressive force to the laminated body. In this case, the suction pad can be completely adhered to the entire area of the package blank in the longitudinal direction.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIGS. 1 and 2, a package blank feeder of one embodiment is schematically shown. This feeding device is provided with a hopper 2, and this hopper 2 has a pair of left and right guide columns 4 and 6 as viewed in FIG. Further, as is apparent from FIG. 2, these guide columns 4 and 6 are arranged at intervals in the longitudinal direction of the hopper 2, and inside thereof, a hopper passage is formed in the vertical direction. The hopper 2 has a rectangular support frame 7 at its base.
The above-mentioned guide columns 4 and 6 are erected on the support frame 7. The support frame 7 has a lower surface opened to form a hopper outlet of the hopper 2 downward,
A plurality of support nails 8, 9, 10 are arranged on the opening edge.

Package blanks B are vertically stacked and accommodated in the hopper 2, and the lowermost package blank B is supported at its peripheral edge by the support nails 8, 9 and 10 described above. Further, a pair of left and right depletion detection sensors 11 are attached to the hopper 2, and these sensors 11 can detect that the stacking height of the package blanks B in the hopper 2 is below a certain level. it can.

Below the hopper outlet, a plurality of suction cups (suction pads) 12 are arranged upward. As shown in FIG. 2, these suction cups 12 form one row in the front-back direction of the hopper 2, and each suction cup 12 is attached to a cup holder 14. Further, below the hopper 2, the transport unit 1
6 is disposed, and the transport unit 16 extends from below the hopper outlet toward a packaging machine (not shown). More specifically, the transport unit 16 is provided with a drive gear pulley 18 and a driven gear pulley 20 at both ends when viewed in the longitudinal direction, and these drive and driven gear pulleys 18 and 20 are coaxially spaced apart in the width direction of the transport unit 16. They are arranged in pairs. Further, endless toothed timing belts 22 are wound in parallel between the driving and driven gear pulleys 18 and 20 forming a pair in the carrying direction. The drive gear pulley 18 is attached to the drive shaft 23, and the drive shaft 23 is connected to a servo motor (not shown).

A large number of pushers 24 are attached to the circumference of the timing belt 22. The pushers 24 are arranged at regular intervals and extend between both timing belts 22. There is. Further, the drive and driven gear pulleys 18 and 20 are provided with notches (not shown) that form clearances for each arrangement interval of the pushers 24.

Further, the transport unit 16 has a transport surface 25 in the same plane as the upper surface of the timing belt 22, and the transport surface 25 extends from below the hopper 2 toward the packaging machine (FIG. 2). The transport unit 16 described above
Can drive the timing belt 22 in the direction of the arrow in the figure by driving the servo motor, and the pusher 24 can be moved along the transport surface 25 in the direction of the packaging machine along with the traveling.

The cup holders 14 are both connected to a drive mechanism (pad drive means) not shown, and therefore each suction cup 12 is vertically reciprocated by this drive mechanism. More specifically, the suction cup 12 is reciprocated between a position where the suction cup 12 projects into the hopper 2 and the suction surface thereof contacts the lower surface of the package blank B at the hopper outlet, and a position where the suction surface is drawn below the transport surface 25. It It should be noted that at this retracted position, one suction cup 12 is retracted into the transport unit 16.

Further, each cup holder 14 has a suction passage 26 therein, one end of which is open to the suction surface of each suction cup 12, and the other end is a collective suction passage 28 and an electromagnetic control valve 30. Via a negative pressure source (not shown). The electromagnetic control valve 30 controls the supply of suction pressure to each suction cup 12, and either suction pressure or atmospheric pressure can be selectively supplied to these suction cups 12.

The hopper 2 is located on the side of one of the guide columns 4 and is mounted on the support frame 7 on the compression unit 32.
The compression unit 32 has a pair of rollers 34 disposed on both sides of the left and right guide columns 4 with the left and right guide columns 4 interposed therebetween. Referring to FIGS. 3 and 4,
The compression unit 32 is shown in more detail. The compression unit 32 includes a body bracket 36, and the body bracket 36 extends on the support frame 7 in the width direction of the hopper 2. The body bracket 36 has its bottom plate 37 fixed to the support frame 7 via bolts 38, and
It has a front wall 39 extending vertically from one end of the bottom plate 37 along the front surface of the hopper 2.

Each of the rollers 34 described above is attached to a projecting end of a shaft 40 projecting from the front wall 39 into the hopper 2, and these shafts 40 extend horizontally and parallel to each other through the front wall 39. . More specifically, the front wall 39 has a bearing flange 42 corresponding to each shaft 40.
The bearing flanges 42 are inserted into the front wall 39 with their bosses facing the hopper 2. Each shaft 40 is rotatably supported by a corresponding bearing flange 42, and driven gears 44 and 45 are attached to the other ends, respectively.

Further, the compression unit 32 has an electric motor 46.
The electric motor 46 is attached to the body bracket 36 via an angle-shaped motor bracket 48. The motor bracket 48 is fixed on the bottom plate 37 of the body bracket 36. A drive gear 52 is attached to the output shaft 50 of the electric motor 46, and the drive gear 52 is directly meshed with one driven gear 44. Further, the drive gear 52 has an idle gear 5
4 is meshed, and the idle gear 54 meshes with the other driven gear 45. The idle gear 54 is supported by the main body bracket 36 via a bearing bracket 56, and the base end of the bearing bracket 56 is attached to the front wall 39.

The above-mentioned drive gear 52 and idle gear 54
The gear train including the driven gears 44 and 45 is in the same vertical plane, and the driven gears 44 and 45 have their axes of rotation in the same horizontal plane. In addition, the electric motor 4
Rotation of the drive gear 52 (clockwise direction in FIG. 3) by driving 6 drives the directly engaged driven gear 44 in the opposite direction, while the idle gear 54 causes the other driven gear 45 to rotate in the same direction. The driven gear 4
4, 45 are rotated in opposite directions.

Further, as shown in FIG. 2, the electric motor 4
6 is connected to a speed control unit 58, and its rotation speed can be arbitrarily changed by adjusting a volume (not shown). Further, a changeover switch 60 is incorporated in the control system of the electric motor 46, and the rotation of the electric motor 46 can be switched to either automatic or manual (free) by the switching operation.

Here, the package blank B accommodated in the hopper 2 is to be formed by folding as a hinge-lid pack P for cigarette packaging shown in FIG. 5, for example, and details thereof are shown in FIG. Has been done.
As is well known, the pack P of FIG. 5 has a pack body D capable of accommodating, for example, 20 cigarette products, and an upper end thereof is opened as a cigarette product outlet. Also,
A lid R is integrally connected to the pack body D at the rear side opening edge thereof via a self-hinge H, and the lid R is rotated about the self-hinge H to close the upper end opening of the pack body D. be able to. An inner frame F is attached to the inner surface of the pack body D so as to overlap with each other. When the lid R is closed from the position shown in the drawing, the lid R is attached to the inner frame F, that is, the open end of the pack body D. Is covered by a section.

Of the pack P described above, the pack body D and the lid R except the inner frame F can be formed from the package blank B of FIG. 6, and therefore the package blank B has a predetermined folding line L in advance. And score line C
Is attached. Further, the package blank B is, for example, laminated printed with a cigarette brand or the like on one surface shown in the figure, and is laminated in the hopper 2 with the printed surface facing upward.

Further, the package blank B of FIG. 6 has a portion (lid portion) where the lid R is to be formed at one end side thereof in the longitudinal direction, and the end portion thereof is formed as an inner front flap IF. There is. When the inner front flap IF is folded as the pack P shown in FIG. 5, the inner front flap IF is a portion that is continuous with the front surface of the lid R and is folded back inward to form an opening edge on the front side of the lid R. The package blank B is housed in the hopper 2 of the supply device so that the edge of the inner front flap IF is guided by the guide column 4.

As shown in FIG. 4, the pair of rollers 34 of the above-mentioned compression unit 32 is the package blank B.
Is stored in the hopper 2, its outer peripheral surface is in contact with both side edges of the inner front flap IF portion. The rotation axes of these rollers 34 are parallel and horizontal to each other, and are arranged in the same direction as the longitudinal direction of the package blank B in the hopper 2.

FIG. 7 more specifically shows the positional relationship between the laminated body of the package blank B and the rollers 34. When the electric motor 46 is driven in this state, the pair of rollers 34 are mutually connected as described above. As a result of being rotated in the opposite direction, all of these rollers 34 rotate while slidingly contacting the side surface of the stacked body of the package blank B. At this time, the pair of rollers 34
Rotate in the direction of moving the outer peripheral surfaces facing each other downward, that is, in the direction of the hopper outlet, so that the rotation of these rollers 34 causes the package blank B in the contact area with the outer peripheral surface to be attached in the direction of the hopper outlet. Energize. On the other hand, since the lowest package blank B in the hopper 2 is supported by the above-mentioned support nails 8, 9, and 10, the lower package blank B from the contact area with the roller 34.
As shown in the figure, a compressive force is applied to the laminated body in the direction of the inner front flap IF in the hopper exit direction (compressing means).

If the outer peripheral surface of the roller 34 is, for example, knurled, the friction coefficient between the roller 34 and the laminated body can be appropriately increased, and the above-described compression force can be satisfactorily applied. Next, with reference to FIG. 8 to FIG. 12, a method of supplying a package blank by the above-described supplying device will be described. Further, the operation timings of the drive mechanism and the transport unit 16 described above will also become clear from the following description.

A package blank B for a hinge-lid type pack is usually stored in a state in which it is stacked vertically as shown in FIG. Deformation (curl) is often caused in a state where the IF portion is largely warped upward. When the package blank B thus deformed is housed in the hopper 2 as it is, the support nail 8 with the inner front flap IF portion uniformly warped as shown in FIG.
And thus the lowest package blank B is partially peeled from the hopper exit of hopper 2.

Further, as shown in FIG. 9, the suction cup 12 is on standby at the retracted position below the transport surface 25 of the transport unit 16, and the transport unit 16 is also in a state in which its operation is stopped. When the electric motor 46 of the compression unit 32 is driven to rotate the pair of rollers 34 in such a state, the laminated body of the package blank B is given a compressive force to the inner front flap IF portion as described above. . At this time, since the lower package blank B is kept flat in shape from the contact area with the roller 34, the stack has a uniform stacking height h from the hopper outlet as shown in FIG. It
The stacking height h is substantially the same as the stacking height h ₀ in the region where the package blank B was band-sealed during storage, that is, in the region where its deformation was hardly seen (see FIG. 7). Further, as is clear from FIG. 10, at this time, the peeling from the hopper outlet of the lowest package blank B described above is eliminated.

In this state, the drive mechanism described above moves the suction cup 12 to its raised position and drives the electromagnetic control valve 30 to supply suction pressure into the collective suction passage 28 (see FIG. 10). As a result, each suction cup 12 is given a suction force, and its suction surface sucks the lowest package blank B. At this time, since the lowest package blank B is held in a flat shape, all the suction cups 12 can be completely brought into close contact with the lower surface thereof, and the suction force thereof can be sufficiently exerted.

With the package blank B adsorbed as described above, the drive mechanism lowers the suction cup 12 as shown in FIG. 11 and feeds the lowest package blank B from the hopper outlet. Further, the drive mechanism, when the package blank B delivered by the lowering of the suction cup 12 reaches the conveying surface 25, the electromagnetic control valve 3
By switching 0, the collective suction passage 28 is communicated with the atmosphere, and the suction pressure is released.

At this time, the delivered package blank B is released from the suction by the suction cup 12 and transferred onto the transport surface 25. At this time, the transport unit 16 stops the movement of the pusher 24, and receives the package blank B between the pushers 24 adjacent to each other with the hopper 2 interposed therebetween. In addition, the pusher 24 described above
The spacing between them has a span sufficient to receive the package blank B in the width direction thereof, and the transport unit 16
Stops the pusher 24 so that the hopper outlet is positioned between these pushers 24.

After this, as shown in FIG. 12, the suction cup 12 descends to its retracted position and stands by until the next ascending timing. On the other hand, when the package blank B is transferred onto the transport surface 25 as described above, the transport unit 16 moves the pusher 24 by one span and transfers the received package blank B toward the packaging machine.

After that, the pair of rollers 34, the drive mechanism and the transport unit 16 repeat the above-mentioned operation, whereby the package blanks B are repeatedly fed out one by one from the hopper 2, and the unwound package blanks B are delivered. Are supplied to the packaging machine one by one by the transport unit 16 (see FIG. 1). In the package blank supply method using the supply device of the above-described embodiment, when the suction cup 12 is brought into close contact with the package blank B, there is no risk of suction failure due to warpage (curl) of the package blank B. That is, as shown in FIG. 9, when the suction cup 12 is lifted as it is with the lowest package blank B partially peeled from the hopper outlet, the lower surface of the package blank B and its inner front flap IF are exposed. A gap is created between the corresponding suction surface of one suction cup 12, and the secondary air is introduced into the collective suction passage 28 through this gap. For this reason, even if the suction surface can be completely fitted by the other suction cup 12, the suction force is reduced and suction failure occurs.

Further, when the remaining amount of the package blank B in the hopper 2 becomes small, the pressing force of the suction cup 12 ascending operation against the stack of the package blank B becomes relatively large, and this pressing force is applied. May overcome the load on the entire body. In this case, the package blank B is pushed up (flutters) into the hopper 2 by the suction cup 12, and this push-up may cause suction failure.

On the other hand, the compression unit 32 of the present embodiment.
And applying a compressive force to the laminated body of the package blank B by the pair of rollers 34, the above-mentioned gap is eliminated and the package blank B is moved to the suction cup 1.
2, it is possible to completely adsorb, and the feeding operation can be ensured. In addition, even if the remaining amount of the package blank B becomes relatively small, the laminated body will not roll
Since it is biased in the direction of the hopper outlet by 4, the lowest package blank B can be surely adsorbed without being pushed up by the suction cup 12.

Therefore, in any case, the delivered package blank B is continuously and stably supplied to the packaging machine,
Greatly improve the operating rate of the entire system from the supply device to the packaging machine. In addition, according to the test results by the inventors of the present invention, in the supply of the package blank using the supply device of the above-described embodiment, the statistical system stop frequency is 1/3 or less of the conventional number. It has been confirmed that it can be dramatically reduced to the level of.

Further, in the feeder of the embodiment, the compression force by the roller 34 can be adjusted by changing the rotation speed of the electric motor 46 by the speed control unit 58, and the operating speed of the packaging machine and the package blank B can be adjusted.
The size can be adjusted as appropriate according to the deformed state of. Further, when the package blank B is filled in the hopper 2, the roller 3 is pushed by the changeover switch 60 described above.
By switching the rotation of 4 to manual, the filling operation can be easily performed.

On the other hand, the package blank B in the hopper 2
If a compressive force is applied to the stacked body of the above by the rollers 34 which are in sliding contact with the side surfaces thereof, the rotation of these rollers 34 hinders the lowering of the stacked body due to the feeding of the package blank B and the refilling work into the hopper 2. Never becomes. The present invention is not limited to the above-mentioned embodiment, but various modifications can be made. For example, a belt conveyor type or roller type conveying means may be used instead of the conveying unit 16 of the embodiment.

Further, not only the inner front flap IF portion but also the other portion of the warp-up region shown in FIG. 7 is added or appropriately changed as a portion for applying a compressive force to the laminated body of the package blank B. Alternatively, it may be another protruding area or band-sealing area. In addition, it goes without saying that the present invention is applicable not only to package blanks for hinge-lid type packs but also to supply of various package blanks.

[0044]

As described above, the method of supplying the package blank of the present invention and the apparatus for supplying the same (claim 1,
According to 2), when unwinding from the hopper outlet by adsorbing lowest package blank, put into package blanks
The laminated end of the laminated body is compressed by the rotation of a pair of rollers.
The lower part of the stack is at its hopper exit.
The stack height from the package is kept uniform and the package blank
Even in the lid region, there is no suction failure due to the suction pad, and reliable feeding and supply thereof can be performed.

In addition, the laminated body is rotated by the rotation of the pair of rollers.
Regardless of the compressive force of the laminated ends , continuous feeding and feeding operations of package blanks can be easily realized, and the operability of the apparatus is greatly improved. Further, if the rotation speed of the roller is variable (claim 3 ), it is possible to cope with a wide range of operating conditions, and its practicality is enhanced. Further, the roller having the outer peripheral surface knurled (claim 4 ) can stably apply a compressive force to the laminate.

Regarding the package lid of the hinge-lid type pack, especially the portion where the deformation is large , that is, the package blank.
Therefore, by disposing a pair of rollers with respect to the tip of the laminated end portion (claim 5 ), it is possible to easily achieve reliable feeding and supply thereof.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a package blank supply device.

FIG. 2 is a left side view showing a schematic configuration of a package blank supply device.

FIG. 3 is a front view showing a partially cutaway compression unit.

FIG. 4 is a sectional view of the compression unit taken along line IV-IV in FIG.

FIG. 5 is a perspective view of a hinge-lid pack formed from a package blank.

FIG. 6 is a plan view showing the package blank in detail.

FIG. 7 is a perspective view showing an arrangement of rollers with respect to a laminated body of package blanks.

FIG. 8 is a perspective view for explaining a storage state of a package blank.

FIG. 9 is a schematic view showing a state in which a package blank is stored in the hopper.

FIG. 10 is a diagram showing a state where the roller is rotated from the state of FIG. 9 and the lowest package blank is sucked by the suction cup.

FIG. 11 is a diagram showing a state in which a package blank is delivered by a suction cup.

FIG. 12 is a diagram showing a state in which a delivered package blank is delivered on a transport surface.

[Explanation of symbols]

2 hoppers 7 Support frame 8, 9, 10 support nails 12 Suction cup (suction pad) 16 Transport unit (transport means) 25 Transport surface (transport route) 26,28 Suction passage 30 electromagnetic control valve 32 compression unit (compression means) 34 Laura 46 electric motor 58 Speed control unit (variable means) B package blank P hinge lid type pack D pack body R lid IF Inner Front Flap

Claims (5)

(57) [Claims] 1. A lid of the pack, which is processed to be formed by folding as a hinge- lid pack and has one end thereof.
Top and bottom of the package blank with a lid part that becomes
As laminated stack, the e <br/> Tsu the path to have a downward hopper outlet leave yield capacity, the laminate from the hopper outlet
In the method of supplying the package blank, which is the lowest package blank of the package blank , is sucked out one by one by a plurality of suction pads and is supplied to the packaging machine through a predetermined supply path, a pair of rotatably arranged near the outlet of the hopper. Low
Between the package blank and the lid part of the package blank.
The laminated ends of the placed laminated body are sandwiched, and the roller
Compression toward the hopper exit to the stack end due to rotation
By applying a force, the roller and the laminated end portion
From the contact area between the lower part of the stack below
In this regard, the stacking height of the lower portion from the hopper outlet is kept uniform, and one of the suction pads is connected to the refill of the package blank.
A method of supplying a package blank, which is characterized by adsorbing a dead portion . 2. An apparatus for feeding package blanks one by one to a packaging machine, each package blank being processed to be folded and formed as a hinge lid type pack and having a lid portion serving as a lid of the pack at one end thereof. A hopper that has a hopper outlet, and stores a stack of the package blanks stacked one above the other in a state of being supported by the edge of the hopper outlet, and extends from below the hopper outlet toward the packaging machine. A transporting means for transporting the package blank through the transporting path, a plurality of suction pads arranged below the hopper outlet and having a suction surface facing the hopper outlet, and the suction pad. While reciprocating between the hopper outlet and the transport path, the suction force is applied to the suction pad at the hopper outlet. The lowermost package blank of the stacked body is sucked and fed out, while the suction force is released in the transport path, and pad drive means for supplying the sucked package blank to the transport path is provided. It has a pair of rollers rotatably arranged in the vicinity of the outlet, and sandwiches the stack end of the stack located on the lid part side of the package blank between these rollers, and rotates the stack to stack the stack. By applying a compressive force to the end toward the hopper outlet, with respect to the lower portion of the laminate below the contact area between the roller and the laminated end, from the hopper outlet of this lower portion Further comprising a compression means for uniformly holding the stacking height of the package blank, wherein one of the suction pads suctions the lid portion of the package blank. Supply device of Tsu cage blank. Wherein said compression means, claim 2, further comprising a variable means for varying the rotation speed of the roller
The package blank feeder described in. 4. The package blank supply device according to claim 2, wherein the outer peripheral surface of the roller is knurled. 5. The pair of rollers is a tip of the laminated end portion.
And the tip of the laminated end is at the lid part.
5. The package blank supply device according to claim 2 , wherein the inner front flap portion is folded back to form a front inner wall of the lid .