JPH10167550A - Accumulating method of sheet material and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly accumulate various different sheet materials without generating folding, knick, and the like by decelerating the sheet material before a process performing shock absorption of the sheet material. SOLUTION: A PS edition 12a constituting a succeeding sheet material 24b is slidingly moved on a doubling paper 16a constituting a preceding sheet material 24a. Consequently, friction force acts between the PS edition 12a of the sheet material 24b and the doubling paper 16a of the sheet material 24a. Further, due to the difference between charge voltage of the PS edition 12a and charge voltage of the doubling paper 16a, electrostatic attractive force acts between the sheet material 24b and the sheet material 24a. Hereby the sheet material 24b is decelerated by one effort, and a shock at collision of the sheet material 24b with an extreme end stopper plate 90 constituting a cushioning mechanism 32 is effectively reduced. Hereby, at collision of the sheet material 24b with the extreme end stopper plate 90, deformation of the extreme end of the sheet material 24b is restrained, and generation of folding, knick, and the like are obstructed from generating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material stacking method and apparatus for stacking sheet materials having a slip sheet bonded to one surface of a thin metal plate in a bundle.

[0002]

2. Description of the Related Art For example, as a PS plate for lithographic printing, a thin metal plate having a photosensitive composition layered on a support such as an aluminum plate having a plate thickness of 0.12 mm to 0.4 mm is used. . Generally, a PS plate, which is a product, is housed in a cardboard box and transported. Therefore, in order to protect the photosensitive composition on a support, an interleaving paper is attached to the surface of the PS plate facing the photosensitive composition. Is electrostatically bonded.

[0003] In order to produce this type of PS plate, for example, an apparatus disclosed in Japanese Patent Application Laid-Open No. 61-241096 is known. This apparatus includes a metal web winding shaft in which a metal web is wound in a roll shape, and an interleaf web winding shaft in which an interleaf web is wound in a roll shape. Then, the metal web and the interleaf paper web sent out from these winding shafts are brought into close contact with each other by a pair of rollers, and then are adsorbed to each other by applying a charge via a charging means, thereby obtaining a sheet material web. Next, a sheet material having a predetermined length is cut by a cutter, and the sheet material is conveyed to a stacking position via a conveyor or the like.

[0004] In this stacking position, it is necessary to surely absorb the impact even on various sheet materials of various sizes. If the impact of the sheet material is not reliably absorbed, the sheet material may be broken or a knick may occur. For this reason, for example, as disclosed in Japanese Patent Publication No. 6-10065, the sheet material is received by using a plurality of stoppers having different conditions such as a movable portion weight, an elastic coefficient and a damping coefficient. There is known a stopper device for aligning a predetermined position.

[0005]

By the way, sheet materials differ greatly in sheet thickness, width and cut length.
The charging speed for the accumulation position may fluctuate. At this time, for example, a sheet material having a plate thickness of 0.15 mm, a width of 450 mm, and a cut length of 400 mm is converted to a sheet material of 60 mm / mi.
n and a thickness of 0.4 mm and a width of 1
When sheet materials having a cut length of 460 mm and a cut length of 1100 mm are accumulated at a speed of 130 mm / min, the momentum of each sheet material is considerably different (actually, the momentum difference is approximately 180 times larger). Do).

However, in the above-mentioned prior art, a single stopper device cannot cope with this kind of fluctuation in momentum. For this reason, in order to attach a stopper device suitable for each sheet material, the line is stopped and the stopper device is replaced, or the feeding speed of a sheet material having a large thickness or size is set to be slow. As a result, a complicated and time-consuming preparation work is required in accordance with the change of the sheet material, and it is pointed out that the entire stacking operation of the sheet material cannot be efficiently performed.

SUMMARY OF THE INVENTION The present invention solves this kind of problem, and a sheet material collecting method capable of efficiently and smoothly collecting various different sheet materials without causing breakage or knicks. It is intended to provide a device.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an object of the present invention is to provide a slip sheet on one surface of a thin metal sheet, for example, a sheet material electrostatically adsorbed in a bundle at an accumulation position. To do this, the next sheet material is sent out to the stacking position while sliding on the interleaf paper of the previous sheet material arranged at the stacking position, and then the next sheet material is subjected to shock absorption.

Here, before the step of absorbing the impact of the sheet material, a step of decelerating the sheet material is provided. Specifically, the next sheet material is effectively decelerated through frictional force and / or electrostatic attraction generated between the previous sheet material and the interleaf paper. Accordingly, it is possible to suppress the tip of the sheet material from being deformed at the time of collision between the sheet material and the buffer mechanism, and it is possible to effectively prevent the sheet material from being broken or the like.

In addition, the sheet material collides with the buffer mechanism while sliding on the preceding sheet material. For this reason, even when a sheet material having a relatively large curl or a sheet material in which the curl is uneven in the width direction is used, the leading end of the sheet material can be held in a horizontal posture over the width direction, thereby preventing breakage. Becomes possible.

This sheet material is obtained by cutting a sheet material web in which a thin metal sheet web and an interleaf paper web are electrostatically adhered to each other. Therefore, the sheet material is continuously and automatically formed, and the entire stacking operation of the sheet material is efficiently performed.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic structural explanatory view of a sheet material accumulating apparatus 10 according to an embodiment of the present invention.

The accumulator 10 is composed of a sheet metal web P
A PS plate rewind mechanism 14 for feeding out the S plate web 12,
An interleaf rewinding mechanism 18 for unwinding the interleaf web 16 and an adhesive mechanism 22 for adhering the interleaf web 16 to one surface of the PS plate web 12 to form a sheet material web 20.
A cutting mechanism 26 for cutting the sheet material web 20 into predetermined lengths to obtain a sheet material 24, and a stacking mechanism for stacking the sheet material 24 on a stacking mechanism 28.
A transport mechanism 30 for sending the next sheet material 24b to the stacking mechanism 28 while sliding on the previous sheet material 24a disposed on the stacking mechanism 28, and the next sheet sent on the previous sheet material 24a. And a buffer mechanism 32 for absorbing the impact of the material 24b.

The PS plate rewinding mechanism 14 has a winding shaft 34 around which the PS plate web 12 is wound. The winding shaft 34 is rotated in the direction of arrow A via a rotation drive source (not shown). P
A joining mechanism 36 and a plurality of rollers 38 are provided near the S-plate rewinding mechanism 14, and a decurling mechanism 40 is provided downstream of the rollers 38. The decurling mechanism 40 has a plurality of decurling rollers 42 a to 42 d smaller in diameter than the roller 38.

The interleaf paper rewinding mechanism 18 has substantially the same configuration as the PS plate rewinding mechanism 14, and has a winding shaft 44 rotatable in the direction of arrow B under the action of a rotation driving source (not shown). The interleaf web 16 is wound around 44. A plurality of rollers 46 are arranged near the slip sheet rewinding mechanism 18.

The bonding mechanism 22 includes a PS plate rewinding mechanism 14
And a nip roller pair (adhesion means) 48 for bringing the PS plate web 12 and the interleaf web 16 fed out from the interleaf rewinding mechanism 18 into close contact with each other, and electrostatically adsorbing the PS plate web 12 and the interleaf web 16 which have been brought into close contact with each other. And charging means 50 for charging. As shown in FIG. 2, the charging means 50 has an electrode 52 and a ground 54, and the electrode 52 and the ground 54 are arranged across the width of the sheet material web 20.

On the downstream side of the charging means 50, a slitter mechanism 56 is provided. The slitter mechanism 56 has a pair of slitter blades 58 for cutting the sheet material web 20 into a predetermined width. On the downstream side of the slitter mechanism 56,
A feed roller pair 60 is provided, and the feed roller pair 60 is driven to rotate in the direction of arrow C via a drive motor (not shown).

The cutting mechanism 26 is disposed close to the downstream side of the feed roller pair 60, and includes an upper blade 62 and a lower blade 64.
And The upper blade 62 and the lower blade 64 cut the sheet material web 20 at predetermined lengths while moving back and forth in a transport direction (arrow X direction) via driving means including a motor (not shown). 16a are continuously formed with the sheet material 24 adsorbed to each other.

The transport mechanism 30 includes a plurality of transport conveyors 66a to 66c arranged in the transport direction, and a gate means 68 is arranged between the transport conveyors 66a and 66b. Below the gate means 68, a discharge unit 70 for discharging defective products is provided.

As shown in FIG. 3, the stacking mechanism 28 has a first side stopper 74 which can adjust the position of one side surface 72a of the sheet material 24 sequentially fed from the conveyor 66c.
A second side stopper 78 disposed on the side opposite to the first side stopper 74 and capable of adjusting the position of the other side surface 72b of the sheet material 24; And a sheet material rear end stopper 82 having an air injection means 80 for injecting air in the direction (the direction of the arrow X).

As shown in FIGS. 3 and 4, the first and second side stoppers 74, 78 are provided with vertical portions 74a, 7a extending in the vertical direction in order to align the width direction of the sheet material 24.
8a and the stacking table 76 where the sheet material 24 is stacked.
In order to guide upwardly, there are integrally provided inclined portions 74b and 78b which are inclined from the upper ends of the vertical portions 74a and 78a by a predetermined angle θ ° in a direction away from each other.

The air injection means 80 is, as shown in FIG.
A plurality of air nozzles 84a to 84e are arranged in the direction of the arrow Y in order to jet air in the direction of the arrow X to the sheet material 24 supplied from the conveyor 66c. Each of the air nozzles 84a to 84e is formed in the sheet material rear end stopper 82, and is connected to the blowers 88a to 88e via the conduits 86a to 86e.

The buffer mechanism 32 is disposed forward of the laminating mechanism 28 in the direction of arrow X. The buffer mechanism 32 includes a leading end stopper plate 90 with which the leading end 72c of the sheet material 24 fed from the conveyor 66c abuts, and a spring 92 for cushioning an impact generated when the sheet material 24 abuts.

The operation of the integrated device 10 configured as described above will be described below in relation to the integration method according to the present embodiment.

First, a PS plate web 12 made of an aluminum thin plate (JIS alloy number 1050) having a thickness of 0.2 mm and a width of 1310 mm is used as a support for the PS plate 12a. An interleaf web 16 having a thickness of 0.05 mm and a width of 1310 mm was used. As other conditions, PS plate rewinding mechanism 1
4 and the unwind speed of the interleaf paper rewinding mechanism 18 is 90 m.
/ Min, the diameter of the decurling rollers 42a to 42d constituting the decurling mechanism 40 is in the range of 30 mm to 80 mm,
In the present embodiment, the width of the sheet material web 20 cut by the slitter mechanism 56 is 1300 mm, the length of the sheet material 24 cut by the cutting mechanism 26 is 1120 mm, and the transport mechanism 30 Was set to 110 m / min.

Further, as shown in FIG.
The electrode 52 is made of stainless steel having a diameter of 3 mm and a length of 15 mm.
72 electrodes are arranged at a pitch of 0 mm and the electrodes 5
2 and the sheet material web 20 have a distance H of 20 mm to
In the present embodiment, the distance is set to 35 mm during 100 mm. The charging voltage was set at -8 kv.

The first and second side stoppers 74 and 78 constituting the stacking mechanism 28 are connected to the transport conveyor 66c.
Were set at the target position with respect to the center of the image, and the distance between them was set to 1301 mm. The inclination angle θ of the inclined portions 74b, 78b of the first and second side stoppers 74, 78
Was set to 20 °.

The spring 92 constituting the buffer mechanism 32 has a length of 3 m.
The distance between the sheet material rear end stopper 82 and the front end stopper plate 90 was set to be 1120 mm in a state where the sheet material was pushed in by m. The air velocity of the air jetted from each of the air nozzles 84a to 84e provided on the sheet material rear end stopper 82 is 5 m / sec, and each outlet has a width of 10 mm.
And the length was set to 50 mm.

Then, when the winding shaft 34 constituting the PS plate rewinding mechanism 14 is rotated in the direction of arrow A via a rotation drive source (not shown), the PS wound around the winding shaft 34 is rotated.
The plate web 12 is fed out to the roller 38 side. The PS plate web 12 is conveyed from the roller 38 to the decurling mechanism 40, is subjected to curl correction via a plurality of decurling rollers 42 a to 42 d, and is then conveyed to the nip roller pair 48 constituting the bonding mechanism 22.

On the other hand, in the slip sheet rewinding mechanism 18, the winding shaft 4
4 is rotated in the direction of arrow B under the action of a rotary drive source (not shown). Therefore, the slip sheet web 16 wound around the winding shaft 44 is fed out to the roller 46 side and is conveyed to the nip roller pair 48 side. PS plate web 12 and interleaf web 1
The sheet material 6 is pressed by the nip roller pair 48 to be in close contact with each other, and is further electrostatically attracted by the charging means 50 to form the sheet material web 20.

Next, the width of the sheet material web 20 is set to 1300 by the slitter blade 58 constituting the slitter mechanism 56.
After being cut to a length of 1120 mm, the sheet is sent to the cutting mechanism 26 via a pair of feed rollers 60 and under the action of an upper blade 62 and a lower blade 64 constituting the cutting mechanism 26.
Is obtained. This sheet material 2
Reference numeral 4 denotes transport conveyors 66a to 66a constituting the transport mechanism 30.
6c under the action of 6c at a speed of 110 m / min.
8

The next sheet material 2 input to the stacking mechanism 28
4b is a sheet material 24 disposed on the stacking table 76 under the guiding action of the first and second side stoppers 74 and 78.
a. At this time, a plurality of air nozzles 84a to 84e constituting the air jetting means 80 are used as shown in FIGS.
Air is jetted in the direction of arrow X in the middle. For this reason, the leading end 72c of the next sheet material 24b does not collide with the preceding sheet material 24a, and the sheet material 2
4a smoothly progresses in the direction of the arrow X while sliding on FIG.
And FIG. 7).

In this case, in this embodiment, the PS plate 12a constituting the next sheet material 24b is replaced with the previous sheet material 24a.
Is moved while slipping on the interleaf paper 16a constituting. Therefore, a frictional force acts between the PS plate 12a of the next sheet material 24b and the slip sheet 16a of the previous sheet material 24a. Further, due to the difference between the charging voltage of the PS plate 12a and the charging voltage of the slip sheet 16a, the next sheet material 24b and the previous sheet material 2
4a and an electrostatic attraction force acts between the first and second electrodes 4a.

As a result, the next sheet material 24b is decelerated at once, and the impact when the next sheet material 24b collides with the leading end stopper plate 90 constituting the buffer mechanism 32 is effectively reduced. Therefore, at the time of collision between the next sheet material 24b and the leading end stopper plate 90, the deformation of the leading end 72c of the next sheet material 24b can be suppressed. The effect of being able to reliably prevent the occurrence is obtained.

More specifically, when the sheet materials 24 are directly stacked using the conventional stacking device, the occurrence rate of defective products is about 3%. Was 0%.

In particular, in the present embodiment, when the thickness, width and cut length of the sheet material 24 are greatly different, or when the feeding speed of the sheet material 24 fluctuates, the equipment needs to be changed. And the sheet material 24 is
Impact when the vehicle collides with the vehicle can be effectively reduced. Therefore, even if various different sheet materials 24 are used, the preparation work is not required for each sheet material 24, and the sheet material 2 is not used.
4 can be efficiently performed.

Since the next sheet material 24b collides with the buffer mechanism 32 while sliding on the preceding sheet material 24a, a sheet material 24 having a relatively large curl or a sheet material having a non-uniform curl in the width direction is used. Even in this case, the leading end 72c of each sheet member 24 can be held in a horizontal posture over the width direction. Accordingly, there is an advantage that even if the sheet material 24 has various curls, it is possible to reliably prevent the sheet material 24 from being broken or the like.

By the way, when the next sheet material 24b collides with the front end stopper plate 90 constituting the buffer mechanism 32, FIG.
As shown in the figure, the next sheet material 24b and the leading end stopper plate 90 move integrally in the arrow X direction. Then, the front end stopper plate 90 pushes the next sheet member 24b back to the sheet member rear end stopper 82 side through the elastic force of the spring 92 engaged with the front end stopper plate 90 (see FIG. 9).
Therefore, the next sheet material 24b is held by the sheet material rear end stopper 82 and the front end stopper plate 90, stopped on the previous sheet material 24a, and stacked.

[0039]

As described above, in the method and apparatus for stacking sheet materials according to the present invention, the next sheet material is sent to the stacking position while sliding on the interleaf paper of the previous sheet material arranged at the stacking position. Therefore, the next sheet material is effectively decelerated before the shock absorbing step through a frictional force or an electrostatic attraction force generated between the preceding sheet material and the slip sheet.

Thus, the impact when the next sheet material collides with the buffer mechanism is greatly reduced, and the tip of the sheet material is prevented from being deformed when the sheet material collides with the buffer mechanism. This makes it possible to prevent the sheet material from being broken or the like. Moreover, even when various kinds of sheet materials having different dimensions and feeding speeds are used, an efficient and highly accurate sheet material accumulation operation can be performed without changing the equipment.

Further, since the sheet material collides with the buffer mechanism while sliding on the previous sheet material, even if a sheet material having a relatively large curl or a sheet material having a non-uniform curl in the width direction is used, each sheet may be used. The tip of the material can be held in a horizontal posture over the width direction. Therefore, even if the sheet material has various curls, it is possible to prevent the sheet material from being broken or the like.

[Brief description of the drawings]

FIG. 1 is a schematic structural explanatory view of a sheet material accumulating apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic configuration explanatory view of a charging unit constituting the integrated device.

FIG. 3 is a schematic perspective explanatory view of a stacking mechanism and a buffer mechanism constituting the integrated device.

FIG. 4 is a schematic plan view of the laminating mechanism and the buffer mechanism.

FIG. 5 is a schematic side view for explaining the operation when the next sheet material is put into the stacking mechanism.

FIG. 6 is a schematic side view illustrating an operation when the next sheet material slides on a previous sheet material.

FIG. 7 is a schematic side view illustrating an operation when the next sheet material slides on a previous sheet material.

FIG. 8 is a schematic side view illustrating an operation when the next sheet material collides with the buffer mechanism.

FIG. 9 is a schematic side view illustrating an operation when the next sheet material is pushed back through the buffer mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Stacking device 12 ... PS plate web 12a ... PS plate 14 ... PS plate rewind mechanism 16 ... Interleaf web 16a ... Interleaf 18 ... Interleaf paper rewind mechanism 20 ... Sheet material web 22 ... Adhesion mechanism 24, 24a,
24b ... sheet material 26 ... cutting mechanism 28 ... laminating mechanism 30 ... transport mechanism 32 ... buffering mechanism 34, 44 ... winding shaft 38, 46 ... roller 40 ... decurling mechanism 48 ... nip roller pair 50 ... charging means 56 ... slitter mechanism 66a-66c ... Conveying conveyors 74, 78 ... Side stoppers 76 ... Collecting table 80 ... Air injection means 82 ... Sheet material rear end stopper 90 ... Top end stopper plate 92 ... Spring

Claims (7)

[Claims] 1. A step of obtaining a sheet material in which an interleaf sheet is adhered to one surface of a thin metal plate; Sending the sheet material to the stacking position while sliding on the slip sheet of the previous sheet material, and shock absorbing the next sheet material sent on the previous sheet material. Of sheet materials to be stacked. 2. The sheet stacking method according to claim 1, wherein said metal sheet and said interleaf paper are electrostatically attracted to each other. 3. The stacking method according to claim 1, wherein, before the impact is absorbed, the interleaving paper of the previous sheet material is brought into contact with the lower surface of the next sheet material via a frictional force. A method for stacking sheet materials, comprising the step of decelerating the next sheet material. 4. The stacking method according to claim 1, wherein before the impact is absorbed, the slip sheet of the previous sheet material is brought into contact with the lower surface of the next sheet material, thereby making the preceding sheet material contact. A step of decelerating the next sheet material through an electrostatic force generated due to a difference between the charging voltage of the slip sheet and the charging voltage of the next sheet material. 5. The method according to claim 1, further comprising the steps of: adhering the sheet metal web and the slip sheet web; and electrostatically adsorbing the sheet metal web and the slip sheet web to obtain a sheet material web. And a step of cutting the sheet material web to obtain the sheet material. 6. A bonding mechanism for bonding a slip sheet web to one surface of a sheet metal web to form a sheet material web, and for cutting the sheet material web into predetermined lengths to obtain a sheet material. A cutting mechanism, and a transport mechanism for feeding the next sheet material to the stacking position while sliding the next sheet material on the slip sheet of the previous sheet material arranged at the stacking position in order to stack the sheet materials in a stacking position. And a buffer mechanism for absorbing a shock of the next sheet material sent out on the previous sheet material. 7. A stacking device according to claim 6, wherein said bonding mechanism comprises: a bonding means for bonding said thin metal web and said interleaf web; and an electrostatic device for bonding said thin metal web and interleaf web to each other. And a charging means for selectively adsorbing the sheet material.