JP2001328762A - Device for piling and aligning sheet like object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for piling and aligning sheet like objects capable of piling bags in neat alignment on a piling stand even when they are discharged with a high speed. SOLUTION: The device for piling and aligning sheet like objects in which the sheet like objects discharged by a delivery means are piled on a piling stand by a free fall comprises an abutting body which is made from a flexible member and is installed by dropping above the piling stand at a front of the delivery means in a direction of the discharge of the sheet like objects, wherein the end of the sheet like objects discharged from the delivery means are abutted to the abutting body to fall down the sheet like objects.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for stacking sheet-like objects, and more particularly, to a method for stacking sheet-like objects discharged by a sending means on a loading table by natural fall. The present invention relates to a stacking device.

[0002]

2. Description of the Related Art As an apparatus for stacking and stacking sheet-like objects, it is employed, for example, in bag manufacturing operations. In the bag manufacturing operation, the roll-shaped synthetic resin sheets are continuously folded and overlapped with each other, then welded at the positions to be the ends of the bag, and then cut into a predetermined size with a cutter. Each sheet is sent out on a loading table and stacked, and bound by a band or the like every predetermined number of sheets.

[0003]

By the way, in such a bag manufacturing operation, the bags stacked on the loading table can be directly bound, that is, the bags stacked on the loading table are re-ordered. It is preferable to stack bags neatly on a loading table so that they can be bound as they are without performing.

Therefore, in the bag manufacturing operation, a partition made of a synthetic resin foam or the like is set up in front of the bag in the discharging direction, and the tip of the bag discharged from the discharging means is abutted against the partition to load the loading table. The tips of the bags stacked on top are aligned.

[0005] However, when the bag collides with the screen, if the momentum of the bag is strong, the bag may rebound and the leading ends may not be aligned. In this case, the bag does not reach its tip before reaching the partition, and the bags cannot be stacked neatly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet stacking apparatus capable of stacking sheets on a loading table in order to solve the above problems.

[0007]

In the sheet stacking apparatus according to the present invention, the sheet discharged by the sending means is stacked on a loading table by natural fall and is stacked. And above the loading platform,
And, in the sheet discharging direction of the sending means (downstream side)
In the meantime, an abutting body constituted by a flexible member is hung down and installed, and the leading end of a sheet-like object sent from the sending means abuts against the abutting body to drop the sheet-like object. ing.

According to the sheet-like material stacking apparatus of the present invention, the striking member acts integrally with the sheet-like material without the sheet-like material bouncing on the striking member. That is, according to the sheet-like material stacking apparatus of the present invention, when the leading end of the sheet-like material discharged from the sending means abuts against the abutment, the abutment escapes together with the sheet-like material and the sheet-like material is released. Absorb momentum. Thereafter, the butting body returns to the original state (vertical state), and at that time, the sheet-like material is pushed back. That is, the sheet-like object is pushed back to a position where the end of the abutment body has returned, and is fixed there. Therefore, the leading ends of the stacked sheets are aligned along the abutment. The abutting body made of a flexible member according to the present invention does not mean that the material itself is flexible, but is a member that moves flexibly to realize the above-described stacking mechanism.

Examples of the abutment include a cloth, a band, a string, and the like. In the case of a band and a string, a plurality of sheets and a plurality of strings are used, respectively. The weight of the abutment body is appropriately selected depending on the weight of the sheet-like material, the sending speed, and the like, and a weight may be attached to the lower end as necessary. When the abutment is a band-like object or a string-like object, the interval between them is appropriately selected according to the size, weight, delivery speed, and the like of the sheet-like object. Strings include strings, chains, and the like.
Examples include metal, synthetic resin, and rubber. When the abutment body is a string-like object, the workability of taking out the sheet-like objects after stacking is remarkably improved. In addition, we narrow interval of cord and,
By increasing the number of sheets, it is possible to cope with an increase in the weight and delivery speed of the sheet-like material. Further, sheets having different weights on the left and right sides (for example, envelopes having tongue pieces in the opening portions have different weights when discharged with the opening portion on the right side and the bottom portion on the left side) are stacked neatly. For this reason, it is better to reduce the distance between strings that hit heavy parts, and widen the distance between strings that hit light parts. Alignment can be easily handled. Further, as the string-like material, a chain is preferable,
Above all, a shape such as a Kihei chain or the like that does not cause the sheet-like material to be caught or caught in the connecting portion of the ring or plate link constituting the chain is particularly preferable. In the case of a chain, the chain always keeps hanging vertically even if the lower end touches the loading table, and the stacking state is broken even if sheets are stacked on the lower end of the chain. Since the chains can be pulled out without any problem, a sufficient stacking effect can be expected regardless of the lifting of the loading table.

In the sheet stacking apparatus according to the present invention, the sending means includes a plurality of rollers arranged at intervals on upper and lower shafts arranged in parallel with each other, and the upper roller and the lower roller are arranged separately. The rollers are arranged offset from each other in the axial direction, and the pitch between the shafts is set smaller than the sum of the radius of the upper roller and the radius of the lower roller.

According to the sheet stacking apparatus of the present invention, the sheet sent from the sending means is deformed into a wave shape. Therefore, rigidity is imparted to the sheet-like material, so that even a sheet-like material having low rigidity can reach the abutment without buckling.

Further, the sheet-like material stacking apparatus according to the present invention is provided with guide means for guiding a side surface of the sheet-like material to a side of a moving area of the sheet-like material discharged by the sending means.

According to the sheet-like material stacking apparatus of the present invention, the sheet-like material delivered from the delivery means by the guide means is guided to the abutment without shifting in the left-right direction, and the stacked sheet-like material is provided. Can be held without collapse.

As the guide means, a plate-shaped one or a rod-shaped one can be employed. When a rod-shaped object, for example, a pole is used, the configuration becomes extremely simple. Further, it is preferable that the pawl is held so as to be vertically slidable with respect to a stay supporting the pawl, since the length can be adjusted in accordance with the distance between the sending means and the loading table.

Further, in the sheet stacking apparatus according to the present invention, the loading table is installed so as to be able to move up and down.

According to the sheet-like material stacking apparatus of the present invention, the height of the stacked sheet-like materials can always be maintained at an optimum height with respect to the sending means and the abutment, and the height of the sheet from the sending means can be reduced. The discharged sheet can be always stacked on the already stacked sheet in the same state.

Further, in the sheet stacking apparatus according to the present invention, the loading table is installed so as to be tiltable with respect to a horizontal plane.

According to the sheet stacking apparatus of the present invention, when the thickness of one side of the bag or the like is different from the thickness of the other side, any one of the stacked sheets is used. Side may accumulate and become abnormally high with respect to the other side, and there is a possibility that the stacked sheet-like objects may be lost due to a loss of balance. However, the inclination can be maintained by tilting the loading table. Further, it is preferable that the loading table is inclined at an appropriate angle with respect to the horizontal plane so that the downstream side in the sheet feeding direction downstream becomes lower. In this case, the stacking of the sheet-like objects is performed more orderly. The inclination angle is preferably less than 15 degrees, and is appropriately set according to the material of the sheet-like material, particularly the friction coefficient and the like.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view conceptually showing an apparatus for stacking sheets according to the present invention, and FIG. 2 is a conceptual view showing a state where sheets are discharged from a feeding means. FIGS. 3 and 4 are explanatory views showing states before and after the sheet-like material discharged from the sending means collides with the abutment body.

The sheet stacking apparatus comprises a belt conveyor 20 for transporting a bag 1 cut to a predetermined size by a cutter (not shown) to a loading table 10;
0, the delivery means 30 provided at the end of the belt conveyor 20, the abutment means 40 provided on the loading table 10, and the side surfaces 1a, 1a of the bag 1 to be discharged. And a guide means 50 for guiding the

As shown in FIG. 2, the delivery means 30 has a plurality of rollers 33, 34 arranged at intervals on shafts 31, 32 which are erected in parallel with each other. The roller 34 is positioned, and the pitch P between the shafts 31 and 32 is set to the radius R
1 and R2 (P <R1 + R2). That is, each lower roller 34 is connected to each upper roller 33,3.
It is arranged so that it can bite between three. Further, in the sending means 30, a tape such as rubber having a large frictional resistance is wound around the upper roller 33 so that the sheet-like material to be sent is sent in an upwardly warped state, and the radius R1 of the upper roller 33 is reduced. It is larger than the radius R2 of the lower roller 34 (R1
> R2).

The abutting means 40 is provided above the loading table 10.
A plurality of metal chains 42 are suspended from the mounted support frame 41 as abutments, and the support frame 41 is a bag 1
Is slidably held by a beam 43 extending in the discharge direction. The support frame 41 is arranged in a direction perpendicular to the discharge direction of the bag 1, so that the plurality of chains 42 are formed in a planar shape and are arranged so as to face the front end 1 b of the bag 1 to be discharged. Is done.

The guide means 50 is provided on a pole 5 with respect to a stay 51 which is installed to protrude above the loading table 10.
2 is slidably supported in the vertical direction, and a felt 52 a is attached to the lower end of the pole 52 for the purpose of reducing frictional resistance with the loading table 10.

In the sheet stacking apparatus configured as described above, the bag 1 cut into a predetermined size is provided.
Is conveyed by the belt conveyor 20, and is discharged above the loading table 10 by the upper roller 33 and the lower roller 34 of the sending means 30. At that time, as shown in FIG. 2, the bag body 1 is deformed in a wave shape by the upper roller 33 and the lower roller 34, and is discharged in that state. Accordingly, the bag body 1 is provided with rigidity, and proceeds toward the metal chain 42 without buckling as shown in FIG.

Then, the discharged bag body 1 strikes against the chain 42 of the striking means 40 as shown in FIG. Then, the chain 42 escapes backward and absorbs the momentum of the bag 1. Subsequently, the chain 42 returns to the original state. At this time, the bag 1 is pushed by the chain 42 and is pushed back to the return position of the chain 42. Therefore, the tips 1b of the bags 1 stacked on the loading table 10 are aligned as shown in FIG.

In the sheet stacking apparatus according to the present embodiment, as shown in FIG. 2, the loading table 10 is disposed on an elevating means such as a cylinder 12 via an inclination angle adjusting means 11. The angle of the loading table 10 can be set arbitrarily.
In the case of the bag 1 in which the sheet-like material is partially formed, for example, the bottom is formed by folding, the bottom has a bulge. Therefore, when such a bag 1 is stacked on the loading table 10 in a horizontal state. In such a case, the height of the bottom side becomes higher than the height of the opening side, and there is a risk that the bags stacked with the balance lost may collapse. In such a case, the loading table 10 is inclined such that the bottom side is lower than the opening side. Further, the loading table 10 is inclined by 5 degrees with respect to a horizontal plane so as to lower the downstream side in the sheet feeding direction in order to improve the stacking effect. That is, in this embodiment, the loading table 10
Are tilted diagonally.

In the sheet stacking apparatus configured as described above, the bag 1 cut into a predetermined size is conveyed by the belt conveyor 20 to the feeding means 30, and from the feeding means 30 to the guide pole 52. By side 1a, 1
a is discharged toward the butting means 40 while being guided to a predetermined position. Then, the tip 1b of the bag 1 collides with the chain 42 of the abutting means 40, and is placed in a predetermined position by the chain 42, that is, in a state where the bag 1 is aligned on the already stacked bags 1. As the bags 1 are stacked on the loading table 10, the loading table 10 is lowered, and the guide pole 52 is also lowered accordingly.

When a predetermined number of bags 1 are stacked on the loading table 10 in this way, the stacked bags 1 are pushed back by the chain 42 of the abutting means 40 to release the loading table 10.
Move on. Then, preparation is made for the next step, that is, the binding step, in the sheet discharging direction (downstream side) of the butting means 40. When the stacked bags 1 are moved in this manner, the loading table 10 is raised, and the next stacking operation of the bags 1 discharged from the sending means 30 is started immediately.

According to the sheet stacking apparatus of this embodiment, since the bag 1 discharged from the sending means 30 is deformed in a wave shape, the butt means 40 does not buckle.
Until it reaches the chain 42 of the butting means 40 and is tidy there. In addition, since the loading table 10 is installed inclined, there is no danger that the stacked bags 1 will collapse, and the positions of both sides 1a, 1a in the discharge direction of the bag 1 will be ensured by the guide poles 50. , And bag 1
Collapse is prevented.

Although the bag 1 is shown as a sheet in the above embodiment, the sheet is not limited to a bag and may be a simple sheet. Further, the sheet-like material to be applied is not limited to the one made of a synthetic resin, and may be made of paper. Also, a bubble buffer sheet having a convex portion on the surface, a bag made of the buffer sheet, and a slippery surface. When stacking sheets having poor properties, the apparatus of the present invention can exhibit extremely excellent stacking performance.

[0031]

As described above, in the sheet-like material stacking apparatus according to the present invention, the sheet-like goods discharged by the sending means are stacked on the loading table by natural fall and stacked. An abutting body formed of a flexible member is disposed above the loading table and in front of the sending means in a sheet discharging direction, and the hanging member is provided. The leading end of the object is abutted against the abutting body to drop the sheet-like object (claim 1). ADVANTAGE OF THE INVENTION According to the sheet-stacking apparatus of this invention, a sheet-like object is stacked on a loading stand by natural fall. Therefore, extremely excellent stacking performance can be exhibited as compared with that obtained by mechanical means after stacking. Further, according to the sheet-like material stacking apparatus of the present invention, the abutment body acts integrally with the sheet-like object without the sheet-like object bouncing on the abutment body. That is, according to the sheet-like material stacking apparatus of the present invention, when the leading end of the sheet-like material discharged from the sending means abuts against the abutment, the abutment escapes together with the sheet-like material and the sheet-like material is released. Absorb momentum. Thereafter, the butting body returns to the original state (vertical state), and at that time, the sheet-like material is pushed back. That is, the sheet-like object is pushed back to a position where the end of the abutment body has returned, and is fixed there. Therefore, the leading ends of the stacked sheet-like objects are aligned neatly along the abutment, and can be stacked without disturbing even if the sending speed is increased. In the sheet stacking apparatus according to the present invention, a string-shaped object is employed as the abutting body (claims 2 and 3). Therefore, the workability of taking out the stacked sheet-like objects is improved, and the effect obtained in claim 1 is more reliable, and the weight balance is poor by adjusting the interval between the cord-like objects. Sheets that are difficult to stack can also be stacked neatly.

In the sheet stacking apparatus according to the present invention, the sending means includes a plurality of rollers arranged at intervals on upper and lower shafts which are arranged in parallel with each other. The rollers are arranged to be offset from each other in the axial direction, and the pitch between the shafts is set smaller than the sum of the radius of the upper roller and the radius of the lower roller (claim 4). Therefore,
According to the sheet-like material stacking apparatus of the present invention, the sheet-like material sent from the sending means is deformed into a wave shape. Therefore, rigidity is imparted to the sheet-like object, so that the sheet-like object can reach the abutment without buckling.

Further, the sheet-like material stacking apparatus according to the present invention is provided with guide means for guiding a side surface of the sheet-like material to the side of a moving area of the sheet-like material discharged by the sending means ( Claim 5). Therefore, according to the sheet-like material stacking apparatus of the present invention, the sheet-like material delivered from the delivery means by the guide means is transferred to the abutting body without shifting in the left-right direction, and the stacked sheet-like material is transferred. It can be held without collapse.

Further, in the sheet stacking apparatus according to the present invention, the loading table is installed so as to be able to move up and down (claim 8). Therefore, according to the sheet-like material stacking apparatus of the present invention, the height of the loaded sheet-like material can always be maintained at the optimum height with respect to the feeding means and the abutment body, and the same height is always maintained. The sheets discharged from the feeding means can be stacked on the already stacked sheets.

Further, in the sheet stacking apparatus according to the present invention, the loading table is installed so as to be able to tilt at an appropriate angle with respect to a horizontal plane. Therefore, according to the sheet-like material stacking apparatus of the present invention, in the case where the thickness of one side of the bag or the like and the thickness of the other side are different, any one of the stacked sheet-like materials is used. The side may accumulate and become abnormally high with respect to the other side, and there is a possibility that the stacked sheet-like objects may be lost due to a loss of balance. However, the inclination can be maintained by tilting the loading table.

[Brief description of the drawings]

FIG. 1 is a conceptual perspective view showing an embodiment of an apparatus for stacking sheets according to the present invention.

FIG. 2 is a conceptual front view showing the sheet stacking apparatus of FIG. 1 including a loading table, a sending unit, and a guide unit.

FIG. 3 is an explanatory diagram for explaining the operation of the sheet-like material stacking apparatus according to the present invention, and shows a state in which the sheet-like material is being discharged from a sending unit.

FIG. 4 is an explanatory diagram for explaining an operation of the sheet-like material stacking apparatus according to the present invention, and shows a state in which the sheet-like material collides with a striking body.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 loading table 11 angle adjusting means 12 cylinder 20 belt conveyor 30 sending means 31, 32 shaft 33 upper roller 34 lower roller 40 abutment means 41 support frame 42 chain 43 beam 50 guide means 51 stay 52 guide pole P pitch between axes R1, R2 roller radius

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisako Morikawa 1127-2, Kamacho, Yokkaichi-shi, Mie (72) Inventor Tsutomu Shimazaki 9-7, Matsugaedacho, Ohanenoen, Komono-cho, Mie-gun, Mie (72) Inventor Kishimoto Mayumi 1130 Kashimacho, Yokkaichi-shi, Mie (72) Inventor Mieko Nakajima 2-5-819 Sakuradai, Yokkaichi-shi, Mie (72) Inventor Midori Sato 2-179-5, Sakurashinmachi, Yokkaichi-shi, Mie (72) Inventor Keiko Yada 4-1-40 Takahanadaira, Yokkaichi City, Mie Prefecture (72) Inventor Maki Koyabu 1039, Yamamotocho, Suzuka City, Mie Prefecture (72) Inventor Kazumi 8-17 Sasagawa, Yokkaichi City, Mie Prefecture Parkside Taiyo 101 (72) Inventor Akira Minami 14-14 Chubu, Yokkaichi-shi, Mie (72) Inventor Asami Fujita 3-1-3 Ikura, Yokkaichi-shi, Mie Friendly A201 F-term (reference) 3F054 AA05 AB03 BA02 BB12 BB20 B G12 3F101 FB12 FE01 LA15 LB12

Claims (9)

[Claims] 1. A sheet stacking apparatus for stacking and stacking sheet-like objects discharged by a sending unit by a natural fall on a loading table, wherein the sheet-like material of the sending unit is provided above the loading table. In front of the object discharging direction, an abutting body constituted by a flexible member is suspended and installed, and the leading end of the sheet-like object sent from the sending means abuts against the abutting body, and the sheet-like object is placed. A sheet stacking device characterized in that it is dropped. 2. The sheet stacking apparatus according to claim 1, wherein the abutment body is constituted by a plurality of strings. 3. The sheet stacking apparatus according to claim 2, wherein the string is a metal chain. 4. The sending means includes a plurality of rollers arranged at intervals on upper and lower shafts arranged in parallel with each other, and an upper roller and a lower roller are arranged so as to be offset from each other in the axial direction. 4. The sheet stacking apparatus according to claim 1, wherein the inter-axis pitch is set to be smaller than the sum of the radius of the upper roller and the radius of the lower roller. 5. 5. The apparatus according to claim 1, further comprising guide means for guiding a side surface of said sheet-like object to a side of a moving area of said sheet-like object discharged by said feeding means.
Or the sheet stacking apparatus according to 4. 6. The sheet stacking apparatus according to claim 5, wherein the guide means includes a pole arranged in a vertical direction. 7. The sheet stacking apparatus according to claim 6, wherein the pawl of the guide means is slidably held in a vertical direction with respect to a stay supporting the pawl. . 8. The sheet stacking apparatus according to claim 1, wherein the loading table is installed so as to be able to move up and down. 9. The apparatus according to claim 1, wherein the loading table is installed so as to be tiltable with respect to a horizontal plane.
9. The sheet stacking apparatus according to 4, 5, 6, 7 or 8.