JP2005239326A - Sheet material feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet material feeder that has a simple constitution and can certainly take out sheet materials from a stacked bundle of the sheet materials one by one. <P>SOLUTION: A pick up roller 42 is contacted with the uppermost lithographic printing plate 20A, and is reversely rotated so that a force in the direction opposite to the conveyance direction acts. The rear ends of lithographic printing plates 20 contact with a rear end guide plate 34 to limit their movement, so that the lithographic printing plate 20A and slip sheet 22A bend, the lithographic printing plates 20 and slip sheets 22 other than them rise, and they are separated. Then, the pick up roller 42 is normally rotated to convey the lithographic printing plate 20A and slip sheet 22A. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a sheet material supply apparatus, and is suitably applied to, for example, a sheet material supply apparatus that is required to supply a planographic printing plate one by one from a stacked bundle of planographic printing plates.

  As a conventional sheet material supply device, a lithographic printing plate supply device that supplies lithographic printing plates one by one from a stacked bundle of lithographic printing plates will be described as an example.

  In general, a planographic printing plate often has a protective interleaving paper in contact with its image recording surface, and a plurality of these laminated in the thickness direction to form a plate bundle of the planographic printing plate. When an image is recorded on the lithographic printing plate by an exposure device or the like, it is necessary to take out the lithographic printing plates one by one from the plate bundle and supply them to the exposure device.

  For example, in the printing plate exposure measure described in Patent Document 1, a suction cup is provided on the sheet portion above the plate accommodating portion, and the printing plate or slip sheet can be sucked and sent out by the suction cup. Yes. Similarly, the printing plate sheet device described in Patent Document 2 can also suck out and send out the printing plate or slip sheet by the suction cup provided on the sheet portion above the plate accommodating portion.

  By the way, in a plate bundle of a lithographic printing plate, the lithographic printing plate and the slip sheet may be in close contact with each other in a laminated state. For example, in order to prevent displacement of the lithographic printing plate within the plate bundle, the gap between the lithographic printing plates may be positively eliminated to improve the vacuum adhesion. Even if only the uppermost layer (the end in the stacking direction) of the planographic printing plate and the interleaf is to be transported from such a plate bundle, the lower planographic printing plate or the like may be taken out in a closely contacted state (so-called (Multiple sending).

In order to prevent this multiple feeding, for example, a configuration in which a plate (soaking plate) that comes into contact with the lithographic printing plate other than the uppermost layer from the downstream side in the transport direction is conceivable. However, in this configuration, the configuration becomes complicated because of providing the stroking plate, and further, the configuration becomes more complicated in order to control the position and posture of the stroking plate with high accuracy.
Japanese Patent Laid-Open No. 2001-225963 JP 2002-321840 A

  In view of the above-described facts, an object of the present invention is to obtain a sheet material supply apparatus that can reliably extract sheet materials one by one from a stack of sheet materials with a simple configuration.

  In the invention according to claim 1, a conveying unit that applies a conveying force due to friction while contacting the end surface sheet material in the stacking direction with respect to the stacked bundle in which a plurality of sheet materials are stacked, and the end surface sheet material On the other hand, it has a bending means for bending a part or all in the thickness direction by applying a force in a direction along the surface.

  That is, in this sheet material conveying apparatus, the bending means acts on the end surface sheet material in the stacking direction end surface in the direction along the surface, and a part or all of the force is bent. As a result, a gap is formed between the curved end face sheet material and the other non-curved end face sheet material, and air enters, so that the vacuum contact is eliminated. In this state, when the conveying means applies a conveying force by friction while contacting the end face sheet material, only the end face sheet material can be sent out in the conveying direction. There is no need for a member (such as a striking plate) for spreading the sheet material, and there is no need to control the position and orientation of this member, so that the configuration is simple.

  According to a second aspect of the present invention, in the first aspect of the present invention, the conveying means includes a conveying roller that rotates in contact with the end face sheet material.

  Thereby, the structure of a conveyance means can be simplified.

  In the invention of claim 3, in the invention of claim 1 or claim 2, the bending means moves a part of the end face sheet material against a force acting on the end face sheet material from the conveying means. It is characterized by including a movement limiting member for limiting.

  That is, in this configuration, even if a force is applied to the end face sheet material by the conveying means, the movement limiting member limits the movement of a part of the end face sheet material against this force. Since the end face sheet material has a part where force is applied from the conveying means and a part where movement is restricted by the movement restricting member, the end face sheet material is curved between them. The conveying means is applied not only when conveying the end face sheet material but also when being bent, and the conveying means serves also as a part of the function of the bending means, so that the configuration can be simplified.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, the conveying means can act on the end sheet material in a direction opposite to the direction of the conveying force. It is said that it is said.

  Therefore, a force in the direction opposite to the conveying direction is applied to the end face sheet material from the conveying means, and this force can be used as a force for bending the end face sheet material.

  In the configuration of claim 4, when the transport means includes the transport roller as described in claim 2, a force in the direction opposite to the transport direction is applied to the end face sheet material only by reversing the transport roller. Can act.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the movement restricting member is in contact with an end side of the sheet material and ends of a plurality of sheet materials. A guide plate for aligning the positions of the parts.

  The positions of the end portions of the plurality of sheet materials can be aligned by the guide plate. Moreover, when a force is applied to the end face sheet material from the conveying means toward the guide plate, the guide plate functions as a movement limiting member, and the end face sheet material can be curved. Since the guide plate is used as the movement restricting member, the configuration is simplified.

  According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, the conveying means is capable of applying the conveying force to the plate-like sheet material. And

  In general, when the sheet material is plate-like, the degree of adhesion in the laminated state becomes high and a large conveying force is often required for conveyance, but the conveying means also conveys to the plate-shaped sheet material. By being able to act on force, it can be transported reliably. In particular, when the sheet material is a lithographic printing plate, a plurality of lithographic printing plates are often in close contact with each other. However, as described in claim 7, the sheet material is a lithographic printing plate. Since the conveying means can apply the conveying force to the printing plate, the lithographic printing plates can be reliably rolled and supplied one by one. If the lithographic printing plate has a curved height that is not more than 3 times the thickness of the lithographic printing plate, the lithographic printing plate can be reliably curled without excessive bending. ,preferable.

  Since the present invention has the above-described configuration, it is possible to reliably take out the sheet materials one by one from the laminated bundle of sheet materials with a simple configuration.

  FIG. 1 shows an overall configuration of a planographic printing plate supply apparatus 12 according to the first embodiment as an example of the sheet material supply apparatus of the present invention. In FIG. 2, the placement unit 14 and the delivery unit 16 of the planographic printing plate supply device 12 are shown in a state in which the plate bundle 18 is placed on the placement unit 14.

  The planographic printing plate is formed by coating a photosensitive layer on one surface of a support formed in a plate shape with aluminum or the like, and as shown in FIG. The laminated set 24 is composed of the planographic printing plate 20 and the interleaf 22. The plate bundle 18 is configured by laminating a laminated set 24 in the thickness direction.

  As shown in FIGS. 4A to 4C, the lithographic printing plate supply device 12 takes out the laminated set 24 from the plate bundle 18, that is, the lithographic printing plate 20 and the interleaf 22 as one set, and will be described later. After the slip sheet 22 is separated from the planographic printing plate 20 by the slip sheet separating device 58, the planographic printing plate 20 is used to send it to the exposure device. In the following, the feeding direction of the planographic printing plate 20 is indicated by an arrow F, and the direction orthogonal to this (the width direction of the planographic printing plate 20) is indicated by an arrow W.

  The planographic printing plate supply device 12 includes a base 26, and the placement unit 14 and the delivery unit 16 are disposed on the base 26. A caster 28 is attached to the base portion 26, and the entire lithographic printing plate supply device 12 can be moved and attached to, for example, the lithographic printing plate insertion portion of the exposure device.

  As shown in FIG. 2, the mounting portion 14 has a flat rectangular mounting tray 30, and in the mounting tray 30, there are two side end guide plates 32 and one rear end guide plate. 34 is arranged. The side end guide plate 32 slides in the direction of arrow W by a slide mechanism (not shown), and aligns the plate bundle 18, that is, the side surfaces of the plurality of stacked sets 24 according to the size of the planographic printing plate 20. Similarly, the rear end guide plate 34 is also slid in the direction of arrow F (and the opposite direction) by a slide mechanism (not shown) to align the rear end of the plate bundle 18 (a plurality of stacked sets 24).

  The placement unit 14 is provided with a plurality of covers 36 so as to cover the periphery of the placed plate bundle 18. The cover 36A that covers the downstream end of the plate bundle 18 in the conveying direction is pressed upward by a pressing member (not shown) when mounted on an exposure apparatus or the like, and rotates about a hinge 38 as shown in FIG. And it is supposed to jump up.

  A holder 40 is stretched over the mounting portion 14 along the width direction of the planographic printing plate 20. A pickup roller 42 is rotatably attached to the holder 40 so as to be positioned above the plate bundle 18 placed on the placement portion 14, and the driving force of the drive motor 44 is transmitted via the endless belt 46. Acting, rotation (forward rotation) in the direction of transporting the planographic printing plate 20 (or interleaf paper 22) and rotation (reverse rotation) in the opposite direction are performed.

  The holder 40 can be rotated around a support shaft 48 provided at both ends in the width direction and on the downstream side in the transport direction. The pick-up roller 42 is rotated between a conveying position where the pickup roller 42 contacts the plate bundle 18 and a separated position separated from the plate bundle 18 by a rotational driving force from the drive unit 50 provided on the side of the holder 40.

  The bottom of the mounting tray 30 is a mounting plate 52 that is swung by a hinge (not shown) provided on the upstream side in the transport direction. In a state where the plate bundle 18 is placed on the placement plate 52, the placement plate 52 is urged upward by a urging member (not shown), and the uppermost lithographic printing plate 20 (or interleaf paper 22) is surely picked up. 42 is contacted.

  Two guide plates 54 and 56 are arranged at a predetermined interval in the transport direction downstream of the mounting portion 14 in the transport direction. The planographic printing plate 20 is conveyed while being supported by the guide plates 54 and 56.

  A slip sheet separating device 58 is disposed between the guide plates 54 and 56. The interleaf separator 58 includes a transport roller unit 60 and a retard roller unit 62 that are sequentially disposed along the transport direction. Each of these is composed of a rotatable shaft 64 spanned along the width direction and a plurality of rubber rollers 66 fixed to the shaft 64 at a predetermined interval. When rotated by receiving driving force from the drive motor 61, the rubber roller 66 of the transport roller unit 60 rotates (forward) in the direction of arrow R1, and the rubber roller 66 of the retard roller unit 62 rotates (reverse) in the direction opposite to the arrow R1. To do.

  The retard roller unit 62 has a drive unit 68 provided at one end thereof, and a contact position (a position indicated by a solid line in FIG. 3) that contacts the interleaving paper 22 and a separating position (see FIG. 3). 3 (position indicated by a chain double-dashed line). At the contact position, the retard roller unit 62 reverses in contact with the slip sheet 22, so that the slip sheet 22 can be separated from the planographic printing plate 20. Further, the rubber roller 66 of the retard roller unit 62 comes into contact with the rubber roller 66 of the transport roller unit 60 so that the interleaf paper 22 can be nipped with the rubber roller 66 of the transport roller unit 60.

  A nip roller 70 is looped over the transport roller unit 60 so as to be rotatable along the width direction. The nip roller 70 is in contact with the rubber roller 66 of the transport roller unit 60 by its own weight so that the lithographic printing plate 20 and the interleaf 22 can be nipped. When the rubber roller 66 of the transport roller unit 60 rotates in the direction of arrow R1 in the nipped state, the planographic printing plate 20 and the interleaf paper 22 are transported in the direction of arrow F. As can be seen from FIG. 3, a gap is formed between the nip roller 70 and the rubber roller 66 of the retard roller unit 62 so as not to nip the planographic printing plate 20 and the interleaf.

  Below the transport roller unit 60 and the retard roller unit 62, interleaf transport roller units 72A and 72B are arranged, respectively. Similarly to the transport roller unit 60 and the retard roller unit 62, the interleaf transport roller units 72A and 72B are composed of a shaft 64 and a rubber roller 66. The interleaf paper 22 is interposed between the rubber rollers 66 of the interleaf transport roller units 72A and 72B. Can be nipped. An endless drive belt 74 is wound around the shaft 64 of the transport roller unit 60 and the shaft 64 of the interleaf transport roller unit 72A, and the interleaf transport roller unit 72A is synchronized with the transport roller unit 60 in the same direction. Rotate to. Similarly, the drive belt 74 is also wound around the shaft 64 of the retard roller unit 62 and the shaft 64 of the interleaf transport roller unit 72B. Therefore, the nipped interleaf paper 22 can be conveyed downward by rotating with the interleaf paper 22 nipped between the rubber rollers 66 of the interleaf paper conveyance roller units 72A and 72B. At this time, the interleaving paper 22 is guided by the drive belt 74.

  As shown in FIG. 2, a stacking box 76 is provided below the slip sheet conveyance roller units 72A and 72B, and the slip sheets 22 are stacked.

  As shown in FIGS. 2 and 3, a presence / absence sensor 78 and a discrimination sensor 80 are attached to the holder 40 upstream of the pickup roller 42 in the transport direction. The guide plate 54 is also provided with a presence / absence sensor 82 and a discrimination sensor 84 in order from the upstream side, and a discrimination sensor 86 is held above the guide plate 54 by a holding member (not shown). Further, the guide plate 56 is also provided with a presence / absence sensor 88 and a discrimination sensor 90 in order from the upstream side. These presence / absence sensors 78, 82, 88 detect the presence / absence of the lithographic printing plate 20 or slip sheet 22, and the discrimination sensors 80, 84, 86, 90 detect whether this is the lithographic printing plate 20 or slip sheet. 22 is determined.

  Corresponding to the presence / absence sensor 78, a notch 79 is formed in the mounting plate 52 of the mounting tray 30. When the plate bundle 18 (the lithographic printing plate 20 or the interleaf paper 22) is placed on the placing plate 52, the light from the presence / absence sensor 78 is reflected by the lithographic printing plate 20 and receives the reflected light. Otherwise, the light from the presence / absence sensor 78 passes through the notch 79. Thereby, presence / absence of the plate bundle 18 can be detected.

  A slip sheet detection sensor 92 is disposed between the transport roller unit 60 and the retard roller unit 62 and the corresponding slip sheet transport roller units 72A and 72B, respectively, so that the passage of the slip sheet 22 can be detected. ing.

  Information detected by the above-described presence / absence sensors 78, 82, 88, discrimination sensors 80, 84, 86, 90 and slip sheet detection sensor 92 is sent to a control device (not shown), and the control device, based on this information, Each part of the planographic printing plate supply device 12 is controlled.

  When supplying the lithographic printing plate 20 to the exposure device by the lithographic printing plate supply device 12 having the above-described configuration, first, the plate bundle 18 is placed on the placement unit 14. At this time, the rear end 18B of the plate bundle 18 is brought into contact with the rear end guide plate 34, and the side ends thereof are brought into contact with the side end guide plate 32 to be aligned.

  When the lithographic printing plate supply device 12 is mounted at a predetermined position of the exposure device, as shown in FIG. 1, the cover 36A is rotated upward to expose a part of the plate bundle 18 (near the front end).

  In this state, since the presence / absence sensor 78 detects the presence of the lithographic printing plate 20 or the interleaf 22 in the placement portion 14, the holder 40 is driven by the drive unit 50, and FIG. As shown, the pickup roller 42 contacts the plate bundle 18.

  Here, the pick-up roller 42 reverses for a short time so that a force in the direction opposite to the conveying direction acts on the uppermost lithographic printing plate 20A. Due to this friction, the uppermost planographic printing plate 20A and interleaf paper 22 try to move in the direction opposite to the conveying direction. However, as shown in FIG. 4B, the rear end 18B of the plate bundle 18 is the rear end guide plate 34. The movement of the planographic printing plate 20 is limited. That is, the planographic printing plate 20A and the interleaf 22A have a portion where a force in the direction opposite to the conveying direction is applied by the pickup roller 42 and a portion where movement is restricted against this force. The planographic printing plate 20A and the interleaf 22A are locally curved upward. Thereby, air enters between the uppermost planographic printing plate 20A and interleaf paper 22A and the lower planographic printing plate 20 and interleaf paper 22, and these are separated.

  Thereafter, the pickup roller 42 rotates in a direction in which a conveying force is applied to the lithographic printing plate 20, whereby a conveying force acts on the lithographic printing plate 20 </ b> A and the interleaf 22 </ b> A due to friction and is conveyed in the arrow F direction. Since the uppermost lithographic printing plate 20A and interleaf paper 22A and the other lithographic printing plates 20 and interleaf paper 22 are completely separated, a plurality of lithographic printing plates 20 and interleaf papers 22 are sent. Absent.

  During the conveyance, the retard roller unit 62 moves up based on the detection results of the presence / absence sensor 82 and the discrimination sensors 84 and 86. The slip sheet 22 can be separated from the lithographic printing plate 20 by contacting the slip sheet 22 while the rubber roller 66 is reversed. When the slip sheet detection sensor 92 detects the passage of the slip sheet 22, the retard roller unit 62 descends to reach the separated position.

  Thereafter, the lithographic printing plate 20 from which the interleaf paper 22 is separated is detected by the presence / absence sensor 88 and the discrimination sensor 90. The planographic printing plate 20 is further conveyed and sent to the exposure apparatus. The interleaf paper 22 is collected in a collection box 76.

  Depending on the configuration of the plate bundle 18 and the like, only the lithographic printing plate 20 or only the interleaf paper 22 may be taken out from the placement unit 14. In this case, it is not necessary to separate the slip sheet 22 by the slip sheet separator 58. When only the lithographic printing plate 20 is taken out, it is conveyed and sent to the exposure apparatus. When only the slip sheet 22 is taken out, the slip sheet 22 may be transported to the stacking box 76.

  FIG. 5 shows a schematic configuration of the mounting portion 94 according to the second embodiment of the present invention. In the second embodiment, only the configuration of the rear end guide plate 94 is different from that of the first embodiment, but the other components are all the same in configuration, and therefore the detailed description of the same portions is omitted.

  The rear end guide plate 94 of the second embodiment has two guide pieces 96 that can move in the direction of arrow W in accordance with the width of the planographic printing plate 20. In a state where the plate bundle 18 is placed on the placement portion 14, each of the guide pieces 96 can be brought into contact only in the vicinity of both ends in the width direction of the planographic printing plate 20. Therefore, when the pickup roller 42 rotates in the reverse direction in contact with the uppermost lithographic printing plate 20A, both ends in the width direction are more greatly curved in the lithographic printing plate 20A. For this reason, it becomes easier for air to enter from the both ends of the lithographic printing plate 20 in the width direction between the uppermost lithographic printing plate 20A and the interleaf paper 22A and the other lithographic printing plate 20 and the interleaf paper 22, and more reliably. Can be separated.

  FIG. 6 shows a schematic configuration of the mounting portion 98 according to the third embodiment of the present invention. In the third embodiment, only the configuration of the mounting plate 100 is different from that of the first embodiment. However, since the rest of the configuration is the same, detailed description of the same portions is omitted.

A spacer 102 that protrudes upward is fixed to the center of the mounting plate 100 of the third embodiment, and the central portion of all the lithographic printing plates 20 of the stacked plate bundle 18 is fixed. Is curved upward. Therefore, in this state, when the pickup roller 42 comes into contact with the uppermost lithographic printing plate 20A and reverses, the uppermost lithographic printing plate 20A and the interleaf 22A are more curved and easily lifted. In this way, the height h of the spacer 102 should be at least three times the thickness of the lithographic printing plate 20 in order to make the uppermost lithographic printing plate 20 and the interleaf paper 22 easily lifted. Is preferred. However, if the spacer 102 is too high, the spacer 102 itself is bulky, and the lithographic printing plate 20 is excessively curved or the number of lithographic printing plates 20 that can be placed on the placement portion 14 is reduced. In order to prevent this, it is preferable that the thickness of the planographic printing plate 20 is not more than 3 times. Further, even in the configuration in which the spacer 102 is not used (the first embodiment and the second embodiment), the curved height of the lithographic printing plate is preferably 3 times or less the thickness of the lithographic printing plate.

  As described above, in each embodiment of the present invention, the uppermost lithographic printing plate 20A and the interleaf paper 22A are curved to create a gap between the other lithographic printing plate 20 and the interleaf paper 22 and enter the air. By making it, it can isolate | separate easily. In general, the lithographic printing plate 20 and the slip sheet 22 constituting the plate bundle 18 are often strongly vacuum-contacted to prevent misalignment with each other. The plate 20A and the slip sheet 22A can be taken out in a state of being reliably separated from the other lithographic printing plate 20 and the slip sheet 22 and conveyed to an exposure device or the like. In the present invention, the planographic printing plate 20A and the interleaf paper 22A are separated by reversing the pickup roller 42, and a conventional member such as a separating plate becomes unnecessary. The number of parts is reduced. Since it is not necessary to control the position and orientation of the stroking plate, the configuration can be simplified.

  In the above description, the uppermost planographic printing plate 20A and the interleaf 22A are bent by reversing the pickup roller 42, but the configuration for bending is not limited to this. For example, apart from the pickup roller 42, a member that applies a force in the direction along the surface may be newly provided on the uppermost planographic printing plate 20A and interleaf 22A. As such an example, a rotatable roller having the same configuration as the pickup roller 42 may be used, or a member that simply applies a frictional force to the uppermost planographic printing plate 20A or interleaf 22A. Good. When a roller is used, the frictional force can be applied to the roller by rotation. Therefore, the conveying means of the present invention also serves as a bending means, and the structure can be simplified. Further, in the configuration using the pickup roller 42 as in each of the above embodiments, the pickup roller 42 serves as both a conveying unit and a bending unit for the planographic printing plate 20, so the number of parts is reduced.

  Further, in the above description, the rear end guide plate 34 (or the guide small piece 96) is described as the movement restricting means of the present invention, but the movement restricting means is not limited to this. For example, the movement of the uppermost planographic printing plate 20 and the interleaf 22 may be locally restricted by pressing the plate bundle 18 from above on the rear end side (upstream in the transport direction) of the pickup roller 42. In addition to simply pressing, a member that substantially restricts movement may be used by positively applying a force toward the downstream side in the transport direction. As an example of this, a roller having the same configuration as the pickup roller 42 can be cited. When the rear end guide plate 34 or the guide piece 96 is used as in each of the above embodiments, a guide plate that is generally widely used for aligning the ends of the lithographic printing plate 20 constituting the plate bundle is the main plate. Since it also serves as the movement restricting member of the invention, the configuration is simplified.

  The portions where the planographic printing plate 20 and the interleaf 22 are curved may extend over the entire surface thereof, or only a part is curved and the other portions are maintained flat as in the above embodiments. Also good.

  In the present invention, the sheet material to be transported is not limited to the above-described planographic printing plate 20 and interleaf paper 22, but in the case of a plate-shaped sheet material, it is strongly vacuum-adhered in a laminated state. Therefore, it is preferable as an object to be conveyed by applying the present invention. In particular, since the lithographic printing plate 20 is often strongly vacuum-adhered in order to prevent displacement of the lithographic printing plate 20 in the laminated state constituting the plate bundle 18, the present invention can be applied more preferably.

It is a side view which shows the planographic printing plate supply apparatus of 1st Embodiment of this invention. It is a perspective view which shows the mounting part and sending part of the lithographic printing plate supply apparatus of 1st Embodiment of this invention. It is a schematic front view which shows the mounting part and sending part of the lithographic printing plate supply apparatus of 1st Embodiment of this invention. It is explanatory drawing which shows in order to (A)-(C) the process in which a lithographic printing plate and a slip sheet are sent out from the lithographic printing plate supply apparatus of 1st Embodiment of this invention. It is a schematic front view which shows the mounting part of the planographic printing plate supply apparatus of 2nd Embodiment of this invention. It is a schematic front view which shows the mounting part of the planographic printing plate supply apparatus of 2nd Embodiment of this invention.

Explanation of symbols

12 Planographic printing plate supply device (sheet material supply device)
14 Placement unit 16 Delivery unit 18 Plate bundle (stacked bundle)
20 Planographic printing plate (sheet material)
22 Interleaf (sheet material)
34 Rear end guide plate (movement limiting member, bending means)
42 Pickup roller (curving means, conveying means, conveying roller)
58 Interleaf separator 60 Transport roller unit 61 Drive motor 62 Retard roller unit 72A Interleaf transport roller unit 72B Interleaf transport roller unit 78 Yes / No sensor 80 Discriminating sensor 82 Yes / No sensor 84 Discriminating sensor 86 Discriminating sensor 88 Yes / No sensor 90 Discriminating sensor 92 Interleaf detection sensor 94 Rear end guide plate 94 Placement part 96 Guide piece (movement limiting member, bending means)
98 Placement unit 100 Placement plate 102 Spacer

Claims (8)

Conveying means for applying a conveying force due to friction while contacting the end surface sheet material in the stacking direction on the stacked bundle in which a plurality of sheet materials are stacked,
A bending means for bending a part or all of the end face sheet material in the thickness direction by applying a force in a direction along the surface;
A sheet material supply device comprising: A transport roller that rotates while the transport means is in contact with the end face sheet material;
The sheet material supply device according to claim 1, comprising: A movement restricting member for restricting movement of a part of the end face sheet material against a force acting on the end face sheet material from the conveying means by the bending means;
The sheet material supply apparatus according to claim 1, wherein the sheet material supply apparatus is configured to include   The sheet material supply according to any one of claims 1 to 3, wherein the conveying unit is capable of applying a force in a direction opposite to a direction of the conveying force to the end face sheet material. apparatus. The movement restricting member is in contact with the edge of the sheet material to align the positions of the end portions of the plurality of sheet materials;
The sheet material supply apparatus according to claim 1, wherein the sheet material supply apparatus is a sheet material supply apparatus.   The sheet material supply apparatus according to any one of claims 1 to 5, wherein the conveyance unit is capable of applying the conveyance force to the plate-shaped sheet material.   The sheet material supply apparatus according to claim 6, wherein the sheet material is a lithographic printing plate, and the conveying unit is capable of applying the conveying force to the lithographic printing plate.   The sheet material supply apparatus according to claim 7, wherein a bending height of the lithographic printing plate by the bending means is set to be three times or less a thickness of the lithographic printing plate.

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