Sheet peeling device, laminate processing device, and image forming system

Abstract

To prevent poor transport of a polymerized sheet or an intermediate sheet from occurring in a conveyance path between a winding roller and a conveyance roller pair.SOLUTION: A sheet peeling part 19 includes: a winding roller 20 that rotates in a predetermined rotation direction and winds a polymerized sheet PJ ; and a peeling claw 16 (peeling member) that moves from a retraction position that does not interfere with a conveyance of a polymerized sheet PJ or an intermediate sheet PM between the winding roller 20 and a third conveyance roller pair 6, and is inserted into a gap C formed between the two sheets P1 and P2. Further, a movable conveyance guide plate 23 (movable conveyance guide member) that is configured to be able to guide the polymerized sheet PJ or the intermediate sheet PM and is movable in the forward and reverse directions on the conveyance path K3 is provided.SELECTED DRAWING: Figure 14

Description

Technical Field

[0001] The present invention relates to a sheet peeling device for peeling a laminated sheet in which two sheets are overlapped and joined at a joint, a laminating processing device including the same, and an image forming system including an image forming device such as a copying machine, a printer, a facsimile machine, or a combination machine thereof or a printing machine.

Background Art

[0002] Conventionally, a sheet peeling device is known that peels a laminated sheet in which two sheets are overlapped and joined at a joint, and inserts an intermediate sheet between the two peeled sheets (see, for example, Patent Document 1). Specifically, the sheet peeling device in Patent Document 1 peels two sheets in a laminated sheet joined at one side at a sheet peeling portion where a winding roller, a peeling claw, etc. are installed. At this time, the laminated sheet is conveyed in the forward direction from the winding roller toward the pair of conveying rollers, or the laminated sheet is conveyed in the reverse direction from the pair of conveying rollers toward the winding roller. Then, the intermediate sheet (intermediate paper) is conveyed in the forward direction between the two sheets in a branched and peeled state formed so as to straddle the conveyance path between the winding roller and the pair of conveyance rollers, and the intermediate sheet is inserted into the laminated sheet.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In the conventional sheet peeling device, conveyance failures of the laminated sheet or the intermediate sheet may occur in the conveyance path between the winding roller and the pair of conveyance rollers. And when such conveyance failures occur, the laminated sheet cannot be peeled well, or the intermediate sheet cannot be inserted well into the laminated sheet.

[0004] The present invention has been made to solve the above-described problems, and provides a sheet peeling device, a laminating device, an image forming device, and an image forming system in which conveyance failures of a polymer sheet or an intermediate sheet are less likely to occur in a conveyance path between a winding roller and a pair of conveyance rollers.

Means for Solving the Problems

[0005] The sheet peeling device in the present invention performs a peeling process of peeling a non-bonded portion of a polymer sheet in which two sheets are overlapped and bonded at a bonding portion, and performs an insertion process of inserting an intermediate sheet between the two peeled sheets. A sheet peeling unit, and a pair of conveyance rollers capable of conveying the polymer sheet in forward and reverse directions, with the conveyance direction from the sheet peeling unit being the forward direction and the conveyance direction toward the sheet peeling unit being the reverse direction. The sheet peeling unit includes a winding roller that rotates in a predetermined rotation direction and winds the polymer sheet, and a peeling member that moves from a retracted position that does not obstruct the conveyance of the polymer sheet or the intermediate sheet between the winding roller and the pair of conveyance rollers and is inserted into a gap formed between the two sheets. Two branch conveyance paths that branch from the conveyance path in different directions across the conveyance path between the winding roller and the pair of conveyance rollers, and a movable conveyance guide member that is configured to be able to guide the polymer sheet or the intermediate sheet and is movable in the forward and reverse directions in the conveyance path are provided.

Advantages of the Invention

[0006] According to the present invention, it is possible to provide a sheet peeling device, a laminating device, an image forming device, and an image forming system in which conveyance failures of a polymer sheet or an intermediate sheet are less likely to occur in a conveyance path between a winding roller and a pair of conveyance rollers.

Brief Description of the Drawings

[0007]

Figure 1

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Figure 19

Best Mode for Carrying Out the Invention

[0008] Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and the redundant description thereof will be simplified or omitted as appropriate.

[0009] First, with reference to FIG. 1, the overall configuration and operation of the sheet peeling device 1 will be described. The sheet peeling device 1 is a device provided with a sheet peeling unit 19 that peels the non-joined portion of the laminated sheet PJ in which two sheets P1 and P2 are overlapped and joined at the joining portion A (see FIG. 5(A)). The sheet peeling unit 19 performs a peeling process for peeling the non-joined portion of the laminated sheet PJ, and performs an insertion process for inserting the middle sheet PM between the two peeled sheets P1 and P2. In addition, an operation display panel 49 (operation display unit) for displaying various information and inputting various commands in the sheet peeling device 1 is installed on the exterior of the sheet peeling device 1.

[0010] In particular, in the present embodiment, as the laminated sheet PJ, two sheets P1 and P2 are overlapped and one side of the four sides is joined as the joining portion A. That is, the laminated sheet PJ (two sheets P1 and P2) is joined only at one side (joining portion A) by heat welding or the like, and the other portions (non-joined portions) are not joined but overlapped. Further, as the two sheets P1 and P2 constituting the laminated sheet PJ, a transparent film sheet (laminate sheet) can be used.

[0011] Note that the laminated sheet PJ may be formed by folding a single sheet. Even for the laminated sheet PJ formed in this way, in the present specification and the like, it is defined as a sheet in which two sheets are overlapped, the folded portion is defined as the "joining portion", and the other portions are defined as the "non-joined portions".

[0012] Then, between the winding roller 20 and the third pair of conveying rollers 6 (pair of conveying rollers), the non-bonded portions of the two sheets P1 and P2 constituting the laminated sheet PJ are peeled off (with the bond of the bonded portion A maintained, the two sheets P1 and P2 are separated around the bonded portion A), and an intermediate sheet PM (a sheet such as a single sheet of plain paper) is inserted between the peeled two sheets P1 and P2. This operation is performed by the sheet peeling device 1 (sheet peeling unit 19).

[0013] As shown in FIG. 1, the sheet peeling device 1 is provided with a sheet peeling unit 19, first and second feed trays 11 and 12, first and second feed rollers 2 and 3, first to third pairs of conveying rollers 4 to 6, a discharge tray 13, first to fifth sensors 41 to 45, a first guide member 25 as an inner limiting member, a movable conveying guide plate 23 (second guide member) as a movable conveying guide member, a third guide member 27, and the like. Further, the sheet peeling unit 19 is provided with a winding roller 20, a moving mechanism 30, a switching claw 15 as a switching member, a peeling claw 16 as a peeling member, and the like. In addition, the sheet peeling device 1 is formed with a plurality of conveying paths such as a first conveying path K1 (curved conveying path), a second conveying path K2, a third conveying path K3, a first branch conveying path K4, and a second branch conveying path K5. These conveying paths K1 to K5 are each for conveying a sheet (the laminated sheet PJ or the intermediate sheet PM), and are guided by two opposing conveying guide members (guide plates). Note that the movable conveying guide plate 23 as a movable conveying guide member is configured to be slidable in the horizontal direction (the left-right direction in FIG. 1) by driving by guide member driving mechanisms 85 to 88 (see FIGS. 15 and the like), which will be described in detail later.

[0014] Specifically, the laminated sheet PJ is loaded on the first feed tray 11. Then, the uppermost laminated sheet PJ on the first feed tray 11 is fed by the first feed roller 2 and conveyed along the first conveying path K1 by the first pair of conveying rollers 4. Further, the intermediate sheets PM are loaded on the second feed tray 12. Then, the uppermost intermediate sheet PM on the second feed tray 12 is to be fed by the second feed roller 3. Each of the first to third conveying roller pairs 4 to 6 is composed of a driving roller and a driven roller, on which an elastic layer made of rubber or the like is formed on the core metal, and conveys the sheet sandwiched between their nips. In the third conveying path K3 from the second conveying roller pair 5 to the third conveying roller pair 6, the second conveying roller pair 5, the winding roller 20, and the third conveying roller pair 6 as a conveying roller pair are installed from the upstream side. In particular, the third conveying roller pair 6 can rotate forward and backward, and is configured to be able to convey the sheet in both the forward direction (clockwise direction) during forward rotation and the reverse direction during reverse rotation. That is, with the conveying direction from the sheet peeling portion 19 as the forward direction (clockwise direction) and the conveying direction toward the sheet peeling portion 19 as the reverse direction, the third conveying roller pair 6 functions as a conveying roller pair (a conveying roller pair that sandwiches and conveys the laminated sheet PJ) that can convey the laminated sheet PJ in both the forward and reverse directions. Also, the third conveying roller pair 6 also functions as a discharge roller pair that discharges the sheet toward the discharge tray 13.

[0015] Each of the first to fifth sensors 41 to 45 is a reflection type photosensor that optically detects whether or not a sheet exists at its position. The first sensor 41 is arranged near the downstream side of the first conveying roller pair 4, the second sensor 42 is arranged near the downstream side of the second feed roller 3, the third sensor 43 is arranged between the second conveying roller pair 5 and the winding roller 20 and near the downstream side of the second conveying roller pair 5, the fourth sensor 44 as a sheet detection sensor is arranged near the downstream side of the winding roller 20 and upstream of the third conveying roller pair 6, and the fifth sensor 45 is arranged downstream of the third conveying roller pair 6.

[0016] With reference to FIGS. 2, 3 (and FIGS. 6(B) to (D), 7(A), etc.), the winding roller 20 will be described. The winding roller 20 is a roller member that, at the winding start position W, uses one end side of the polymerization sheet PJ (the side opposite to the side where the joint A is formed) as the gripped portion B and rotates in a predetermined rotation direction while gripping the gripped portion B with the gripping member 32 (gripping portion) to wind the polymerization sheet PJ. The winding roller 20 is configured to be rotatable in both forward and reverse directions about the rotation shaft 20a by the drive of a winding roller motor 201 (see FIG. 4) controlled by the control unit. Specifically, as shown in FIG. 1, the polymerization sheet PJ is conveyed from the first feed tray 11 through the first conveyance path K1 and then conveyed in the forward direction (clockwise direction) along the third conveyance path K3 by the second conveyance roller pair 5, and once passes through the position of the winding roller 20 and is conveyed to the position of the third conveyance roller pair 6. Thereafter, the polymerization sheet PJ is conveyed in the reverse direction to the position of the winding roller 20 by the third conveyance roller pair 6, which serves as a reversed conveyance roller pair, and is wound by the winding roller 20 that rotates counterclockwise while being gripped by the gripping member 32.

[0017] Then, referring to FIG. 6(C´), when the polymerization sheet PJ is wound around the winding roller 20, the linear speeds of the sheet P1 and the sheet P2 are proportional to the distances from the center of the winding roller 20 to the respective sheets P1 and P2 so that the linear speed of the roller surface is proportional to the roller radius. Therefore, since the sheet P1 is closer to the center of the winding roller 20 than the sheet P2 (is located on the inner side), the linear speed of the sheet P1 is slower than that of the sheet P2. Therefore, the first sheet P1 is more likely to slacken compared to the second sheet P2, and as shown in FIGS. 6(D), 7(A), etc., a gap C (a gap C formed by the upper first sheet P1 bending upward) is formed between the two sheets P1 and P2 on the side (the other end side) of the joint A of the polymerization sheet PJ. In this way, the two sheets P1 and P2 change from a state of being in close contact without a gap to a state of being peeled (separated).

[0018] Hereinafter, the mechanism by which a gap C is formed in the laminated sheet PJ between the winding roller 20 and the third conveying roller pair 6 by winding the laminated sheet PJ around the winding roller 20 will be further described in detail. The laminated sheet PJ wound around the winding roller 20 is held by the holding member 32 so that sheet displacement is restricted. As a result, slip due to the difference in circumferential length occurs in the winding roller 20, and the conveyance amount of the inner sheet P1 becomes less than that of the outer sheet P2. As a result, slack occurs in the inner sheet P1 between the nip of the third conveying roller pair 6 and the winding roller 20. At this time, by winding the laminated sheet PJ around the winding roller 20 one or more times, a circumferential length difference is generated between the inner circumference and the outer circumference by the thickness of the sheet thereafter, and slack similarly occurs. Finally, slack accumulates between the third conveying roller pair 6 and the winding roller 20, and a gap C is formed between the two sheets P1 and P2. Specifically, assuming that the thickness of the inner sheet P1 is ΔR and the distance from the rotation axis 20a (axis center) of the winding roller 20 to the inner sheet P1 is R, the distance from the rotation axis 20a (axis center) of the winding roller 20 to the outer sheet P2 is R + ΔR. Since the radius differs by the thickness ΔR of the inner sheet P1, when the laminated sheet PJ is wound around the winding roller 20 once, a circumferential length difference of 2×ΔR×π occurs between the inner sheet P1 and the outer sheet P2. Therefore, assuming that the number of times the laminated sheet PJ is wound around the winding roller 20 is M times, slack of 2×ΔR×π×M occurs in the inner sheet P1. Finally, slack accumulates between the third conveying roller pair 6 and the winding roller 20, and a gap C corresponding to 2×ΔR×π×M is formed between the two sheets P1 and P2.

[0019] In particular, in the present embodiment, in order to significantly form the gap C as described above, the laminated sheet PJ is wound around the winding roller 20 at least one or more times. Thus, in this embodiment, by installing the winding roller 20 for winding the polymerization sheet PJ, the sheet peeling device 1 can peel the polymerization sheet PJ without being significantly enlarged or increased in cost.

[0020] Here, in this embodiment, as shown in FIG. 6(B´), the gripping member 32 in FIG. 2(A) is configured to grip the gripped portion B without abutting and contacting the end face of the tip of one end side (the side of the gripped portion B) of the polymerization sheet PJ. Note that the "end face" of the polymerization sheet is defined as the surface (side face) in the thickness direction that connects the front side and the back side of the polymerization sheet. Therefore, there are four end faces for a rectangular polymerization sheet, namely, the front, back, left, and right faces.

[0021] Specifically, the gripping member 32 is configured to sandwich and grip the gripped portion B of the polymerization sheet PJ from a direction perpendicular to the sheet surface of the gripped portion B between the gripping member 32 and the receiving portion 20b of the winding roller 20 without abutting and restricting the end face of one end side of the polymerization sheet PJ against any member, that is, without contacting it. The receiving portion 20b is on the outer surface of the winding roller 20 and is formed so as to face the gripping member 32. More specifically, the receiving portion 20b is formed in a portion recessed inward from the virtual outer peripheral surface (the circular outer peripheral surface around which the polymerization sheet PJ is wound) of the winding roller 20.

[0022] Specifically, the polymerization sheet PJ is not restricted and sandwiched between the gripping member 32 and the receiving portion 20b with its one end side end face (tip end face) abutting against a specific member (for example, the gripping member 32 itself), but is sandwiched and gripped by the outer gripping member 32 and the inner receiving portion 20b without its one end side end face (tip end face) abutting against any member. Therefore, the one end side end face (tip end face) of the polymerization sheet PJ does not abut against the obtuse angle portion (wedge portion) of the gripping member 32 in FIG. 6(B´), and the gripped portion B on one end side of the polymerization sheet PJ is gripped by the gripping member 32 and the receiving portion 20b. And one end face (tip) of the polymerization sheet PJ coincides with the end of the contact surface between the gripping member 32 and the receiving portion 20b (the right end in FIG. 6(B')) without hitting it. In addition, the one end face (tip) of the polymerization sheet PJ may be such that the tip on the one end side of the polymerization sheet passes beyond and avoids the contact surface between the gripping member 32 and the receiving portion 20b so that the gripped portion B is inside the sheet (on the other end side from the tip on the one end side). Also, the one end face (tip) may be within this contact surface. Therefore, compared with the case of abutting the tip face, it is possible to reduce the problem that the polymerization sheet PJ (especially the tip portion) is damaged. In addition, in the present embodiment, the polymerization sheet PJ wound around the winding roller 20 has a joining portion A formed on the other end side opposite to the one end side that becomes the gripped portion B.

[0023] Here, in the present embodiment, at least one of the gripping member 32 (gripping portion) and the receiving portion 20b is formed of an elastic material such as rubber, a spring, or a leaf spring. Thereby, compared with the case where both the gripping member 32 and the receiving portion 20b are formed of a rigid body such as a metal material or a resin material, the gripping force on the polymerization sheet PJ can be increased, and it is less likely to damage the surface of the polymerization sheet PJ. In particular, when both the gripping member 32 and the receiving portion 20b are formed of an elastic material, such an effect is likely to be exhibited.

[0024] As shown in FIGS. 2 and 3, the moving mechanism 30 moves the gripping member 32 between a gripping position (the positions shown in FIGS. 2(A) and 3(A)) where the polymerization sheet PJ can be gripped and a retracted position (the positions shown in FIGS. 2(B) and 3(B)) retracted from the gripping position at the winding start position W of the winding roller 20. Specifically, the moving mechanism 30 is composed of an arm member 31, a compression spring 33 as a biasing member, a cam 34, a cam motor 341 (see FIG. 4) that rotationally drives the cam 34 in the forward and reverse directions, and the like. The arm member 31 holds the gripping member 32 and is held by the winding roller 20 so as to be rotatable about the support shaft 31a. In the present embodiment, the gripping member 32 is integrally formed (held) at the tip portion on the proximal end side of the arm member 31. On the other hand, the gripping member 32 may be configured as a separate member from the arm member 31 and the gripping member 32 may be installed (held) on the arm member 31. In any case, the arm member 31 holding the gripping member 32 rotates about the rotation shaft 20a together with the gripping member 32 and the winding roller 20. The compression spring 33 functions as a biasing member that biases the arm member 31 so that the gripping member 32 moves from the retracted position shown in Fig. 2(B) to the gripping position shown in Fig. 2(A). Specifically, one end side of the compression spring 33 is connected to a fixed position near the rotation shaft 20a, and the other end side is connected to one end side of the arm member 31 (the free end side on the opposite side of the side where the gripping member 32 is provided with the support shaft 31a interposed therebetween). The cam 34 pushes the arm member 31 against the biasing force of the compression spring 33 (biasing member) so that the gripping member 32 moves from the gripping position shown in Fig. 2(A) to the retracted position shown in Fig. 2(B). The cam 34 is rotationally driven in the forward and reverse directions at a desired rotation angle by a motor controlled by the control unit. The cam 34 is held by the device housing so as to be rotatable about the cam shaft 34a independently of the winding roller 20.

[0025] As shown in Figs. 2(A) and 3(A), in the moving mechanism 30 configured as described above, when the cam 34 is not in contact with the arm member 31, the arm member 31 is biased by the compression spring 33 and the gripping member 32 is in a state of being in pressure contact with the receiving portion 20b (closed state). On the other hand, as shown in Figs. 2(B) and 3(B), when the cam 34 presses the arm member 31, the arm member 31 rotates counterclockwise in Fig. 2(B) about the support shaft 31a so as to resist the biasing force of the compression spring 33, and the gripping member 32 is in a state of being separated from the receiving portion 20b (open state). This open state is a state in which the polymer sheet PJ cannot be gripped (gripping release state). When the gripping member 32 is in the open state (the state of being located at the retracted position), the polymerization sheet PJ is interposed between the gripping member 32 and the receiving portion 20b. When the gripping member 32 moves to the closed state (the state of being located at the gripping position), the polymerization sheet PJ is gripped by the gripping member 32 and the receiving portion 20b.

[0026] In addition, in the present embodiment, as shown in FIG. 3, the cylindrical roller portion of the winding roller 20 is divided into a plurality (seven in number) in the axial direction. And, in accordance with the dividing positions of the respective roller portions (the recesses between adjacent roller portions), a plurality of gripping members 32 and arm members 31 are installed, and a plurality of cams 34 are installed so as to be able to contact the plurality of these arm members. By dividing the position for gripping the polymerization sheet PJ in the axial direction instead of making it the entire axial region, the load required for gripping the polymerization sheet PJ can be dispersed, and damage to the tip of the polymerization sheet PJ can be reduced. Further, such a configuration is useful when the required gripping force becomes large, such as when gripping a large-sized polymerization sheet PJ or a heavy polymerization sheet PJ.

[0027] In the present embodiment, as shown in FIG. 1, the third conveyance path K3 is formed by a linear conveyance guide plate. On the other hand, as the conveyance guide plate, a curved one can also be used to form the third conveyance path. Also, in such a case, the gripping position of the polymerization sheet PJ on the winding roller 20 can be changed closer to the rotation axis 20a than that in the present embodiment. Further, in such a case, the positions of the gripping member 32 and the receiving portion 20b in the present embodiment can be interchanged so that the gripping member 32 is disposed on the rotation axis 20a side of the receiving portion 20b on the winding roller 20.

[0028] Here, as shown in FIG. 4, in the sheet peeling device 1, a CPU 501 (Central Processing Unit), a RAM 502 (Random Access Memory), and a ROM 503 (Read Only Memory) are connected to an I / F 504. The CPU 501 is an arithmetic means and controls the overall operation of the sheet peeling device 1. The RAM 502 is a volatile storage medium capable of high-speed reading and writing of information and is used as a work area when the CPU 501 processes information. The ROM 503 is a non-volatile storage medium for read-only and stores programs such as firmware. The sheet peeling device 1 processes an information processing program (application program) loaded from the ROM 503 to the RAM 502 and the like by the arithmetic function provided in the CPU 501. By this processing, a software control unit including various functional modules of the sheet peeling device 1 is configured. A functional block that realizes the functions of the sheet peeling device 1 is configured by combining the software control unit configured in this way with the hardware resources mounted on the sheet peeling device 1. That is, the CPU 501, the RAM 502, and the ROM 503 constitute a controller 500 (control unit) that controls the operation of the sheet peeling device 1. The I / F 504 is an interface that connects the first and second feed rollers 2 and 3, the first to third transport roller pairs 4 to 6, the first to fifth sensors 41 to 45, the winding roller motor 201, the cam motor 341, the switching claw motor 151, the peeling claw motor 77, the guide plate motor 85 (see FIG. 15), the home position sensor 90 (see FIG. 15), etc. to the controller 500. The controller 500 operates the first and second feed rollers 2 and 3, the first to third transport roller pairs 4 to 6, the winding roller motor 201, the cam motor 341, the switching claw motor 151, the peeling claw motor 77, the guide plate motor 85, etc. through the I / F 504. Further, the controller 500 acquires the detection results from the first to fifth sensors 41 to 45, the home position sensor 90, etc. Note that the winding roller motor 201 is a driving means for driving the winding roller 20. The cam motor 341 is a driving means for driving the cam 34. The switching claw motor 151 is a driving means for driving the switching claw 15. Also, the guide plate motor 85 is a driving means for slidingly moving the movable transfer guide plate 23.

[0029] Here, referring to FIG. 1, FIG. 5(D), FIG. 6(A), etc., in the sheet peeling device 1 of the present embodiment, a fourth sensor 44 as a sheet detection sensor for detecting the polymer sheet PJ conveyed toward the winding roller 20 is installed. And the moving mechanism 30 is controlled based on the detection result of the fourth sensor 44 (sheet detection sensor). Specifically, the fourth sensor 44 is disposed on the conveyance guide member of the conveyance path between the winding roller 20 and the third conveyance roller pair 6. And as shown in FIG. 5(D), FIG. 6(A), etc., when the polymer sheet PJ is conveyed in the reverse direction toward the position of the winding roller 20 by the third conveyance roller pair 6 with the side of the gripped portion B at the head, its tip (the tip during reverse conveyance.) is detected by the fourth sensor 44. And using the detection timing as a trigger, the timing to stop the polymer sheet PJ at the gripping position and the timing to grip the gripped portion B by the gripping member 32 are adjusted and controlled. Specifically, after a predetermined time has elapsed since the tip of the polymer sheet PJ is detected by the fourth sensor 44, the reverse conveyance of the polymer sheet PJ by the third conveyance roller pair 6 is stopped, and the cam 34 is rotated to rotate the arm member 31 (moving mechanism 30) so that the gripping member 32 moves from the retracted position shown in FIG. 2(B) to the gripping position shown in FIG. 2(A). By performing such control, the operation of sandwiching between the gripping member 32 and the receiving portion 20b without hitting the end face of the polymer sheet PJ against any member can be performed accurately.

[0030] Here, as described above, the third pair of conveying rollers 6 is a pair of conveying rollers that conveys the laminated sheet PJ with one end side (the side of the gripped portion B) leading toward the winding start position W of the winding roller 20 in the conveying path formed between the winding roller 20 (which is a part of the third conveying path K3).

[0031] Also, with reference to FIGS. 7(A) to (C), FIG. 10, FIGS. 11(A) to (C), etc., the peeling claw 16 as a peeling member will be described. The peeling claw 16 as a peeling member is a claw-shaped member that is wound around from one end side (the side of the gripped portion B) by the winding roller 20 and is inserted into the gap C formed between the two sheets P1 and P2 from the widthwise end in a state where the other end side (the side of the joint portion A) is clamped by the third pair of conveying rollers 6 (pair of conveying rollers) with respect to the laminated sheet PJ wound around the winding roller 20 and the third pair of conveying rollers 6. It moves from a retracted position that does not obstruct the conveyance of the laminated sheet PJ (or the intermediate sheet PM) between the winding roller 20 and the third pair of conveying rollers 6. Specifically, in the present embodiment, the peeling claws 16 are provided at both ends in the width direction (the direction perpendicular to the plane of FIG. 7 and the left-right direction of FIG. 10). Further, the peeling claw 16 has a plate and fins extending in the vertical direction. In the direction in which the peeling claw 16 is inserted into the laminated sheet PJ, the plate has a rear end and a tip at the center in its width direction. The plate thickness and plate width of the plate are each formed so as to gradually increase from the tip toward the rear end. Also, the vertical length of the fin is formed so as to gradually increase from the fin tip in the direction in which the peeling claw 16 is inserted into the laminated sheet PJ. Further, the plate and the fin of the peeling claw 16 form a cross shape at the rear end (see FIG. 11(A)). Furthermore, the pair of peeling claws 16 are each configured to be movable in the width direction by moving means (not shown) controlled by the control unit so as not to contact each other. The peeling claws 16 configured as described above standby at a retracted position (the position shown in Fig. 11(A).) that does not obstruct the conveyance of the sheet such as the polymerization sheet PJ in the third conveyance path K3 until a gap C is formed in the polymerization sheet PJ as shown in Fig. 7(A). Then, when separating the polymerization sheet PJ (the two sheets P1 and P2), as shown in Figs. 10 and 11(B), etc., the peeling claws 16 enter the gap C of the polymerization sheet PJ and secure a large gap C there. Note that, as the moving means for moving the peeling claws 16 in the width direction, for example, a pinion-rack mechanism can be used.

[0032] More specifically, as the drive mechanism 76 as the moving means for moving the pair of peeling claws 16 in the width direction, the one shown in Fig. 12(A) or the one shown in Fig. 12(B) can be used. As shown in Fig. 12, in this embodiment, the two peeling claws 16 are arranged to face each other. The drive mechanism 76 shown in Fig. 12(A) moves the two peeling claws 16 by belt drive respectively, and the drive mechanism 76 shown in Fig. 12(B) moves the two peeling claws 16 by rack-pinion drive respectively. Specifically, in the drive mechanism 76 shown in Fig. 12(A), a belt 80 is stretched between a drive pulley 78 and a driven pulley 79, and the two peeling claws 16 are attached to the belt 80 facing each other. Here, one peeling claw 16 is connected to the lower belt 80 and the other peeling claw 16 is connected to the upper belt 80 respectively. Also, a drive gear that meshes with a motor gear installed on the motor shaft of the peeling claw motor 77 is installed on the drive pulley 78. Then, the rotational output of the peeling claw motor 77 is transmitted to the belt 80. Specifically, when the motor gear of the peeling claw motor 77 rotates in the clockwise direction in Fig. 12(A), the two peeling claws 16 approach each other, and when the motor gear of the peeling claw motor 77 rotates in the counterclockwise direction in Fig. 12(A), the two peeling claws 16 move away from each other. In addition, as shown in FIG. 12(B), the drive mechanism 76 is provided with two racks 83A and 83B that mesh with one pinion 84 and extend in opposite directions. Two separation claws 16 are attached to each of the racks 83A and 83B so as to face each other. A drive gear that meshes with a motor gear installed on the motor shaft of the drive motor 82 is installed on the pinion 84. Then, the rotational output of the drive motor 82 is transmitted to the racks 83A and 83B. Specifically, when the motor gear of the drive motor 82 rotates in the clockwise direction in FIG. 12(B), the two separation claws 16 approach each other, and when the motor gear of the separation claw motor 77 rotates in the counterclockwise direction in FIG. 12(B), the two separation claws 16 move away from each other. As described above, the separation claw 16 in the present embodiment has a shape having a plate and fins extending in the vertical direction, and is configured to be movable in the width direction of the laminated sheet PJ by the drive of the drive mechanism 76. Therefore, as shown in FIG. 11(B), it can be smoothly inserted into the gap C generated in the laminated sheet PJ.

[0033] Also, referring to FIGS. 8(A) to 8(C) and the like, the switching claw 15 as a switching member is installed between the separation claw 16 and the winding roller 20. Then, the two branched transport paths K4 and K5 that branch in different directions from the third transport path K3 across the transport path (a part of the third transport path K3) between the winding roller 20 and the third transport roller pair 6 are separated by the separation claw 16. The two sheets P1 and P2 in the waisted state of the laminated sheet PJ are respectively guided in different directions. At this time, the switching claw 15, which is a claw-shaped moving member, rotates and moves so as to rotate forward and backward within a predetermined angle range to guide the laminated sheet PJ. Specifically, in the present embodiment, the switching claw 15 is provided so as to be divided into a plurality of parts with a gap in the width direction (the direction perpendicular to the paper surface of FIG. 8) so as not to interfere with the movable transport guide plate 23 or the like. Further, the switching claw 15 is configured to be rotatable about a support shaft by a switching claw motor 151 (see FIG. 4) controlled by the control unit. The switching claw 15 configured as described above waits at a standby position (the position shown in Fig. 8(A)) that does not interfere with the conveyance of the sheet such as the polymer sheet PJ in the third conveyance path K3 until the belted sheets P1 and P2 of the polymer sheet PJ peeled off by the peeling claw 16 are guided to the branch conveyance paths K4 and K5. Then, when the switching claw 15 guides the two sheets P1 and P2 of the polymer sheet PJ (which have been separated by the peeling claw 16) to the branch conveyance paths K4 and K5 respectively (when guiding them in different directions), as shown in Fig. 8(B), when viewed from the side of the polymer sheet PJ, it rotates to a position that obstructs entry into the third conveyance path K3. As a result, the first sheet P1 is guided to the first branch conveyance path K4, and the second sheet P2 is guided to the second branch conveyance path K5.

[0034] Specifically, as shown in Fig. 8(A), the third conveyance roller pair 6 conveys the polymer sheet PJ to the other end side (the left side) so that the winding of the polymer sheet PJ around the winding roller 20 on one end side after the peeling claw 16 is inserted into the gap C is released. Then, after conveying the polymer sheet PJ as shown in Fig. 8(B), as shown in Fig. 8(C), the third conveyance roller pair 6 conveys the polymer sheet PJ back to one end side (the right side), guides one sheet P1 peeled off by the peeling claw 16 to the first branch conveyance path K4, and guides the other sheet P2 to the second branch conveyance path K5. After that, as shown in Figs. 9(A) to (C), the middle sheet PM is conveyed toward the other end side of the third conveyance path K3 so that the middle sheet PM is inserted between the two peeled sheets P1 and P2.

[0035] Also, referring to Fig. 7(A) etc., the first guide member 25 functions as an inner limiting member that limits the amount of slack of the first sheet P1 that is wound around the winding roller 20 on the inner side among the two sheets P1 and P2 of the polymer sheet PJ between the peeling claw 16 (refer to Fig. 7(B)) and the winding roller 20 in the third conveyance path K3.

[0036] Here, the movable conveyance guide plate 23 as the movable conveyance guide member is formed to be able to guide the polymerization sheet PJ or the middle sheet PM, and is configured to be movable in the forward and reverse directions (the direction of the white arrow in FIG. 5 (left - right direction)) in the conveyance path (which is a part of the third conveyance path K3) between the winding roller 20 and the third conveyance roller pair 6 (conveyance roller pair) as shown in FIGS. 5(B) and 5(C). Specifically, the movable conveyance guide plate 23 (movable conveyance guide member) is installed on the side opposite to the side where the winding roller 20 is installed in the third conveyance path K3. Specifically, the movable conveyance guide plate 23 is installed below the third conveyance path K3 in FIGS. 5 and the like. And the movable conveyance guide plate 23 is configured to be movable between the first position (reference position) shown in FIGS. 5(A) and 5(D) and the second position shown in FIGS. 5(B) and 6(C). Note that the first position (reference position) is a position where the conveyance guide range (the range that actually guides the sheet, which is the range in the conveyance direction of the conveyance guide surface 23a shown in FIG. 15) is the range reaching the upstream side (the upstream side in the forward conveyance direction) from the peeling claw 16 (peeling member) with respect to the winding roller 20 (including the positions in its vicinity) in the third conveyance path K3. On the other hand, the second position is a position where the conveyance guide range is the range reaching the third conveyance roller pair 6 (including the positions in its vicinity) from the position on the upstream side in the conveyance direction with respect to the above - mentioned peeling claw 16 in the third conveyance path K3. And the movable conveyance guide plate 23 configured in this way moves from the first position to the second position (or from the second position to the first position) in accordance with the operation of the polymerization sheet PJ (or the middle sheet PM conveyed in the forward direction) conveyed in the forward or reverse direction in the conveyance path between the winding roller 20 and the third conveyance roller pair 6.

[0037] By providing such a movable conveyance guide plate 23, it becomes less likely that conveyance failures of the polymerization sheet PJ or the middle sheet PM occur in the conveyance path between the winding roller 20 and the third conveyance roller pair 6. In the conveyance path between the winding roller 20 and the third pair of conveyance rollers 6, since the peeling claw 16 (peeling member) appropriately moves from the retracted position toward the center in the width direction and the branch conveyance paths K4 and K5 are provided, if a conveyance guide plate is fixedly installed over the entire area of the conveyance path between the winding roller 20 and the third pair of conveyance rollers 6, problems such as interference between the peeling claw 16 and the conveyance guide plate and inability to convey the sheet to the branch conveyance paths K4 and K5 will occur. On the other hand, if the installation of the conveyance guide plate is stopped to prevent such problems, conveyance defects such as the conveyance direction of the laminated sheet PJ and the intermediate sheet PM not being determined and jamming without being fed into the nip of the third pair of conveyance rollers 6 are likely to occur. And if such conveyance defects occur, the laminated sheet PJ may not be peeled off properly, or the intermediate sheet PM may not be inserted properly into the laminated sheet PJ. In contrast, in the present embodiment, a movable conveyance guide plate 23 that can move in the forward and reverse directions is provided in the conveyance path between the winding roller 20 and the third pair of conveyance rollers 6, and the movable conveyance guide plate 23 is moved between a first position and a second position in accordance with the operations of the laminated sheet PJ and the intermediate sheet PM and the operation of the peeling claw 16, so that the occurrence of the above-described problems can be reduced.

[0038] Specifically, referring to FIGS. 5(A), (B), etc., in the present embodiment, when the laminated sheet PJ is conveyed in the forward direction with the peeling claw 16 (peeling member) located at the retracted position in the third conveyance path K3 (conveyance path), the movable conveyance guide plate 23 is controlled to move from the first position to the second position in accordance with the conveyance of the laminated sheet PJ. Specifically, until the polymerization sheet PJ passes near the winding roller 20, the movable conveyance guide plate 23 is located at the first position (reference position) shown in FIG. 5(A). As the conveyance of the polymerization sheet PJ in the forward direction proceeds, the movable conveyance guide plate 23 is moved from the first position to the second position in accordance with the conveyance. The timing for moving the movable conveyance guide plate 23 is detected by the third sensor 43 for the leading end portion (joint portion A) of the polymerization sheet PJ and calculated from the conveyance speed and the like. Thereby, the polymerization sheet PJ can be smoothly guided to the third conveyance roller pair 6.

[0039] Also, referring to FIGS. 5(C), 5(D), etc., when the polymerization sheet PJ is conveyed in the reverse direction with the peeling claw 16 located at the retracted position in the third conveyance path K3 (conveyance path), the movable conveyance guide plate 23 is controlled to be moved from the second position to the first position in accordance with the conveyance of the polymerization sheet PJ. Specifically, when the reverse rotation of the third conveyance roller pair 6 is started to wind the polymerization sheet PJ around the winding roller 20, the movable conveyance guide plate 23 is located at the second position shown in FIG. 5(C). As the conveyance of the polymerization sheet PJ in the reverse direction proceeds, as shown in FIG. 6(D), the movable conveyance guide plate 23 is moved from the second position to the first position in accordance with the conveyance. The timing for moving the movable conveyance guide plate 23 is calculated from the drive timing of the third conveyance roller pair 6, the conveyance speed, and the like. Thereby, the polymerization sheet PJ can be smoothly guided to the winding roller 20.

[0040] In the present embodiment, as shown in FIGS. 6(C) and 6(D), when winding the polymerization sheet PJ around the winding roller 20 to form a slack due to the difference in the circumferences of the two sheets P1 and P2 to form the gap C, the movable conveyance guide plate 23 is moved to the second position. Thereby, since the lower surface of the portion of the polymerization sheet PJ where the gap C is formed is supported by the movable conveyance guide plate 23, a good gap C (the gap C for inserting the peeling claw 16 later) can be formed.

[0041] Also, referring to FIGS. 7(B), (C), FIG. 8, etc., when the polymerization sheet PJ is conveyed in the forward or reverse direction in the third conveyance path K3 (conveyance path) and the peeling claw 16 (peeling member) moves from the retracted position and is inserted into the gap C, the movable conveyance guide plate 23 is controlled to be located at the first position (reference position). By controlling in this way, the peeling claw 16 does not interfere with the movable conveyance guide plate 23, and its function can be fully exerted. Also, when the polymerization sheet PJ (two sheets P1, P2) is being conveyed to the separation conveyance paths K4, K5, the movable conveyance guide plate 23 is located at the first position (reference position). As a result, the conveyance of the polymerization sheet PJ (two sheets P1, P2) to the separation conveyance paths K4, K5 is also performed smoothly.

[0042] Also, referring to FIGS. 9(A), (B), etc., when the middle sheet PM is inserted between the two sheets P1, P2 of the polymerization sheet PJ in a state where the two sheets P1, P2 of the polymerization sheet PJ are located in the two branch conveyance paths K4, K5 and peeled in the third conveyance path K3 (conveyance path), the movable conveyance guide plate 23 is controlled to move from the first position to the second position in accordance with the forward conveyance of the middle sheet PM. Specifically, until the middle sheet PM passes near the winding roller 20 after the peeling process, the movable conveyance guide plate 23 is located at the first position (reference position) shown in FIG. 9(A). As the forward conveyance of the middle sheet PM proceeds, the movable conveyance guide plate 23 is moved from the first position to the second position in accordance with the conveyance. The timing of moving the movable conveyance guide plate 23 is detected by the third sensor 43 for the leading end of the middle sheet PM and calculated from the conveyance speed and the like. Thereby, the middle sheet PM can be smoothly guided to the third conveyance roller pair 6 (between the two sheets P1, P2).

[0043] Also, referring to FIG. 9(C), etc., when the polymerization sheet PJ in a state where the middle sheet PM is inserted between the two sheets P1, P2 is conveyed in the forward direction by the third conveyance roller pair 6, the movable conveyance guide plate 23 is controlled to move from the second position to the first position (reference position). When the tip of the middle sheet PM is inserted between the two sheets P1 and P2, then the third conveying roller pair 6 is rotated forward, and while the middle sheet PM and the two sheets P1 and P2 are conveyed in the forward direction, the insertion of the middle sheet PM between the two sheets P1 and P2 is completed. At this time, since the movable conveying guide plate 23 retracts to the first position (reference position), the sliding contact between the laminated sheet PM and the movable conveying guide plate 23 can be avoided, so that damage to the laminated sheet PJ due to sliding contact is less likely to occur.

[0044] Here, referring to FIG. 15 and the like, the movable conveying guide plate 23 is configured to be horizontally movable between the first position and the second position by the guide member drive mechanisms 85 to 88. In the present embodiment, the guide member drive mechanism is composed of a guide plate motor 85, pulleys 86A and 86B, a timing belt 87, a guide rod 88, and the like. The movable conveying guide plate 23 is slidably held on the guide rods 88 respectively installed at both end portions in the width direction. A holding portion 23d fixed and held by the timing belt 87 is formed at one end portion in the width direction of the movable conveying guide plate 23. On the other hand, the motor gear installed on the motor shaft of the guide plate motor 85 meshes with the gear portion formed in a stepped shape on one pulley 86A. The timing belt 87 is wound around the two pulleys 86A and 86B. With such a configured guide member drive mechanisms 85 to 88, by the forward and reverse drive control of the guide plate motor 85 by the control unit 500, the movable conveying guide plate 23 slides in the forward and reverse directions between the first position (reference position) and the second position. In addition, in the present embodiment, a home position sensor 90 for optically detecting the state where the movable conveying guide plate 23 is located at the first position (reference position) is installed. Further, the guide plate motor 85 is a stepping motor, and the state where the movable conveying guide plate 23 is located at the second position can be grasped from the number of motor pulses from the state where the movable conveying guide plate 23 is located at the first position.

[0045] Also, referring to FIG. 15 and the like, in the present embodiment, the movable conveyance guide plate 23 has a conveyance guide surface 23a (the surface that actually guides the sheet) formed on the downstream side in the conveyance direction (the downstream side in the positive conveyance direction). On the upstream side in the conveyance direction, an auxiliary surface 23b (a horizontal surface) is formed in a direction away from the conveyance guide surface 23a (downward in FIGS. 5 and the like). And an inclined surface 23c is formed so as to connect the auxiliary surface 23b and the conveyance guide surface 23a. By forming the movable conveyance guide plate 23 in this way, even when the leading ends of the laminated sheet PJ and the intermediate sheet PM conveyed in the positive direction are in a state of being bent downward, the leading ends are guided to the conveyance guide surface 23a along the auxiliary surface 23b and the inclined surface 23c, and then the laminated sheet PJ and the intermediate sheet PM are smoothly conveyed in the positive direction together with the movable conveyance guide plate 23.

[0046] Hereinafter, with reference to FIGS. 5 to 9, the operation of peeling the laminated sheet PJ in the sheet peeling device 1 (sheet peeling unit 19) will be described. Also, in the description of the operation, the operation of the peeling claws 16 will be described using FIGS. 10 and 11 as appropriate, and the control flow will be described using the flowcharts of FIGS. 13 and 14. First, when the laminated sheet PJ is fed from the first feed tray 11 (FIGS. 13 and 14: step S1), as shown in FIG. 5(A), in the third conveyance path K3, with the joint A at the head, it is conveyed in the positive direction (the direction of the arrow R shown in FIGS. 5(A) and (B)) by the second conveyance roller pair 5. At this time, the moving mechanism 30 is controlled so that the gripping member 32 is positioned at a gripping position inside the outer periphery of the winding roller 20. That is, the cam 34 is rotationally moved to a position where it does not press the arm member 31. When the gripping member 32 is positioned at the gripping position in this way, the conveyance of the sheet in the third conveyance path K3 is not obstructed by the gripping member 32. Further, the switching claw 15 is standby at a standby position where its free end is rotationally moved downward and does not obstruct the conveyance of the sheet in the third conveyance path K3. Further, the peeling claw 16 is retracted to a retracted position (the position shown in Fig. 11(A)), and the movable conveyance guide plate 23 is positioned at the first position (the position shown in Fig. 5(A)). Then, as shown in Fig. 5(B), the laminated sheet PJ is conveyed by the third conveyance roller pair 6 until the gripped portion B (rear end in the positive direction, one end side) of the laminated sheet PJ passes the position of the winding roller 20, and the laminated sheet PJ is further conveyed in the positive direction. After the leading end portion (joint portion A) reaches the position of the conveyance guide surface 23a of the movable conveyance guide plate 23, the movable conveyance guide plate 23 is moved from the first position to the second position in accordance with the conveyance of the laminated sheet PJ (Fig. 14: step S30). Then, as shown in Fig. 5(C), the conveyance of the laminated sheet PJ is stopped. The timing of stopping the conveyance at this time is triggered by the timing when the joint portion A (front end in the positive direction, the other end side) of the laminated sheet PJ is detected by the third sensor 43, and is the timing when the laminated sheet PJ is conveyed by a predetermined amount X1 by the third conveyance roller pair 6 from the detection by the third sensor 43 (Fig. 13: steps S2, S3). Then, as shown in Fig. 5(C), when the conveyance of the laminated sheet PJ by the third conveyance roller pair 6 is temporarily stopped, the gripping member 32 is moved from the gripping position to the retracted position (Fig. 13: step S4). That is, the cam 34 is rotationally moved to a position where it presses the arm member 31. This state is a state in which the gripped portion B of the laminated sheet PJ can be received between the gripping member 32 and the receiving portion 20b. Then, as shown in FIG. 5(D), the third conveying roller pair 6 is rotated in the reverse direction to start the reverse conveyance of the polymerization sheet PJ (FIGS. 13 and 14: step S5). At this time, in order to convey the gripped portion B of the polymerization sheet PJ to the gripping position of the winding roller 20, the gripped portion B (reverse-direction tip, one end side) of the polymerization sheet PJ is detected by the fourth sensor 44. Further, in accordance with the conveyance of the polymerization sheet PJ conveyed in the reverse direction, the movable conveyance guide plate 23 is moved from the second position to the first position (FIG. 14: step S31).

[0047] Then, as shown in FIG. 6(A), triggering on the timing when the gripped portion B of the polymerization sheet PJ is detected by the fourth sensor 44, the polymerization sheet PJ is conveyed by a predetermined amount X2 by the third conveying roller pair 6 until the gripped portion B of the polymerization sheet PJ reaches the winding start position W (see FIG. 2, etc.) at a predetermined rotational position of the winding roller 20, and then stops (FIG. 13: steps S6, S7). Then, as shown in FIG. 6(B), the gripping member 32 is moved from the retracted position to the gripping position at a predetermined rotational position of the winding roller 20 (FIG. 13: step S8). That is, the cam 34 is rotationally moved to a position where it does not press the arm member 31. This state is a state in which the gripped portion B is gripped between the gripping member 32 and the receiving portion 20b without the end face on one end side of the polymerization sheet PJ hitting any member, as shown in FIG. 6(B´). Note that the winding start position W in FIG. 2 is the position of the outer peripheral surface of the winding roller 20 at a predetermined rotational position. However, at the retracted position in FIG. 6(A) and the gripping position in FIG. 6(B), the outer peripheral surface itself of the winding roller 20 does not exist. For this reason, the winding start position W becomes the winding start position W of the virtual outer peripheral surface. Then, as shown in FIG. 6(C), while gripping the polymerization sheet PJ by the gripping member 32, the winding roller 20 is rotated in the reverse direction (counterclockwise), and the third conveying roller pair 6 is reversed again. Then, when the winding of the polymerization sheet PJ by the winding roller 20 is started, as shown in FIG. 6(C), the movable conveyance guide plate 23 is moved from the first position to the second position (FIG. 14: step S32). Then, as the rotation of the winding roller 20 proceeds, as shown in FIG. 6(D), a gap C is formed between the two sheets P1 and P2 of the polymerization sheet PJ between the winding roller 20 and the third conveying roller pair 6. At this time, the polymerization sheet PJ is in a state where its deflection is restricted by the first guide member 25 and the movable conveying guide plate 23 (located at the second position) near the winding roller 20. Therefore, the gap C of the polymerization sheet PJ is concentratedly formed at a position close to the third conveying roller pair 6.

[0048] In this way, the reverse end of the polymerization sheet PJ is detected by the fourth sensor 44, which is arranged between the third conveying roller pair 6 and the winding roller 20 and on the downstream side in the reverse direction with respect to the third conveying roller pair 6. And since the timing for gripping the gripped portion B of the polymerization sheet PJ by the gripping member 32 and the receiving portion 20b is determined with this timing as a trigger, regardless of the variation in the sheet length with respect to the required sheet conveyance amount X2 (an error that exists even for sheets of the same size), the gripped portion B of the polymerization sheet PJ can be accurately conveyed to a desired gripping position. Also, by installing the fourth sensor 44 between the third conveying roller pair 6 and the winding roller 20 and on the side of the winding roller 20, the required sheet conveyance amount X2 can be shortened regardless of the sheet length from the detection of the reverse end of the polymerization sheet PJ. Thereby, the variation in the conveyance amount X2 can be suppressed, and the gripped portion B of the polymerization sheet PJ can be accurately conveyed to a desired gripping position. From the above, it is preferable that the fourth sensor 44 is arranged at a position close to the winding roller 20.

[0049] Thereafter, while the reverse rotation of the third conveying roller pair 6 in FIG. 6(D) continues and the winding of the polymerization sheet PJ by the winding roller 20 is started, when the conveyance amount by the third conveying roller pair 6 reaches a predetermined amount X3, as shown in FIG. 7(A), the conveyance by the third conveying roller pair 6 is stopped and the winding of the polymerization sheet PJ by the winding roller 20 is stopped (FIGS. 13 and 14: step S9). In this state, the polymerization sheet PJ is wound around the winding roller 20 for one or more turns, and the gap C of the polymerization sheet PJ is in a sufficiently widened state. Further, the joint portion A of the polymerization sheet PJ is sandwiched by the third conveying roller pair 6. Then, as shown in FIG. 7(B), the peeling claws 16 are inserted into the sufficiently widened gap C of the polymerization sheet PJ (the insertion position shown in FIG. 11(B)). That is, as shown in FIGS. 10 and 11, the pair of peeling claws 16 are respectively moved from the retracted position in FIG. 11(A) to the peeling position in FIG. 11(B). At this time, as shown in FIG. 7(B), the movable conveyance guide plate 23 is moved from the second position to the first position (FIG. 14: step S33). Then, as shown in FIG. 7(C), with the peeling claws 16 inserted into the gap C, the forward rotation of the third conveying roller pair 6 is started and the forward (clockwise) rotation of the winding roller 20 is started (FIGS. 13 and 14: step S11). At this time, when the polymerization sheet PJ can be conveyed by the forward (clockwise) rotation of the winding roller 20, the joint portion A does not necessarily have to be sandwiched by the third conveying roller pair 6. That is, the joint portion A of the polymerization sheet PJ may be conveyed to the third conveying roller pair 6 side by the forward rotation of the winding roller 20, and then the joint portion A may be sandwiched by the third conveying roller pair 6, and the polymerization sheet PJ may be conveyed by the third conveying roller pair 6.

[0050] Then, as shown in Fig. 8(A), after the third pair of conveying rollers 6 conveys the polymerization sheet PJ in the forward rotation by a predetermined amount X4, the forward rotation of the third pair of conveying rollers 6 and the forward rotation of the winding roller 20 are stopped respectively (Fig. 13: step S12). At this time, the polymerization sheet PJ is not wound around the gripping member 32, and the gripping member 32 is in a state where it can release the gripping of the gripped portion B of the polymerization sheet PJ located at the winding start position W. That is, the gripping member 32 can move from the gripping position for gripping the gripped portion B to the retracted position at the winding start position W. Then, in that state, the gripping member 32 is moved from the gripping position to the retracted position to position the gripping member 32 on the third conveying path K3 (Fig. 13: step S13). That is, as shown in Fig. 2(B), the cam 34 is rotated and rotationally moved to a position where the arm member 31 is pressed. This state is a state where the gripping of the polymerization sheet PJ by the gripping member 32 is released. In this embodiment, the cam 34 (the moving mechanism 30) is moved to release the gripping by the gripping member 32. However, when the pulling force by the conveyance of the third pair of conveying rollers 6 is greater than the gripping force by the gripping member 32, the gripping by the gripping member 32 can also be released by the pulling by the conveyance of the third pair of conveying rollers 6 without moving the cam 34 (the moving mechanism 30). Thereafter, as shown in Fig. 8(B), the third pair of conveying rollers 6 is rotated forward again to start the forward conveyance of the polymerization sheet PJ (Fig. 13, Fig. 14: step S14). Then, the gripped portion B (the forward end, one end side) of the polymerization sheet PJ is detected by the fourth sensor 44. And after the gripped portion B (the forward end, one end side) of the polymerization sheet PJ passes over the switching claw 15, the gripping member 32 is moved from the retracted position to the gripping position, and the switching claw 15 is rotated clockwise from the standby position to the switching position. Then, triggered by the timing when the trailing end of the laminated sheet PJ in the forward direction is detected by the fourth sensor 44, after the laminated sheet PJ is conveyed by a predetermined amount X5 by the third pair of conveying rollers 6 and then the conveyance is stopped (FIG. 13: step S15), the peeling claw 16 is moved from the insertion position (the position in FIG. 11(B)) to the center position in the width direction (the position in FIG. 11(C)) (FIGS. 13 and 14: step S25). As a result, as shown in FIG. 8(B), the trailing ends of the two sheets P1 and P2 are greatly separated and opened. Thereafter, as shown in FIG. 8(C), the third pair of conveying rollers 6 is reversed to start the reverse conveyance of the laminated sheet PJ (FIGS. 13 and 14: step S16). At this time, since the free end of the switching claw 15 is located at the switching position that blocks the entry of the laminated sheet PJ into the third conveyance path K3, the two peeled sheets P1 and P2 are respectively guided to the two branch conveyance paths K4 and K5 as shown in FIG. 8(C). At this time, in order to stop the conveyance while sandwiching the vicinity of the joint A in the laminated sheet PJ with the third pair of conveying rollers 6, the joint A (the reverse trailing end, the other end side) of the laminated sheet PJ is detected by the fifth sensor 45 (see FIG. 1). Also, at this time, since the movable conveyance guide plate 23 is located at the first position, the conveyance of the two sheets P1 and P2 to the two branch conveyance paths K4 and K5 is not hindered, and there is no interference with the peeling claw 16.

[0051] Then, triggered by the timing when the reverse trailing end of the laminated sheet PJ is detected by the fifth sensor 45 (see FIG. 1), the laminated sheet PJ is conveyed by a predetermined amount X6 by the third pair of conveying rollers 6 and then stopped (FIG. 13: steps S17, S18). At this time, the joint A of the laminated sheet PJ is at the position of the nip of the third pair of conveying rollers 6 or at a position slightly downstream to the left of the nip. That is, the other end side of the laminated sheet PJ is in a state of being sandwiched by the third pair of conveying rollers 6. Then, as shown in FIGS. 9(A) and 9(B), the peeling claws 16 are moved to the retracted position, and the conveyance of the middle sheet PM from the second feed tray 12 (see FIG. 1) is started (FIGS. 13 and 14: steps S26 and S19). At this time, the tip (forward tip, other end side) of the middle sheet PM is detected by the third sensor 43 (FIG. 13: step S20). Further, as shown in FIG. 9(B), the movable conveyance guide plate 23 is moved from the first position to the second position in accordance with the conveyance of the middle sheet PM conveyed in the forward direction (FIG. 14: step S35). Thereafter, as shown in FIG. 9(C), triggering on the timing when the forward tip of the middle sheet PM is detected by the third sensor 43, after the middle sheet PM is conveyed by a predetermined amount X7 by the second conveyance roller pair 5, the forward conveyance of the laminated sheet PJ by the third conveyance roller pair 6 is resumed (FIGS. 13 and 14: step S21). At this time, the middle sheet PM is accurately sandwiched at a desired position between the two sheets P1 and P2. Also, the movable conveyance guide plate 23 is moved from the second position to the first position (FIG. 14: step S36). Thus, the process of inserting the middle sheet PM between the two sheets P1 and P2 in the laminated sheet PJ is completed. Then, by the forward conveyance by the third conveyance roller pair 6, the laminated sheet PJ with the middle sheet PM inserted therein is placed on the discharge tray 13 (see FIG. 1).

[0052] In this embodiment, in the state of FIG. 7(A), a gap C is formed between the two sheets P1 and P2 at the non-joined portion on the side of the joined portion A of the laminated sheet PJ, and the two sheets P1 and P2 are peeled (separated). On the other hand, in the state of FIG. 7(A), if the laminated sheet PJ is sufficiently clamped by the third pair of conveying rollers 6, the joint A may be used as the gripped portion B. That is, in FIGS. 6(A) to 6(D), with the joint A of the laminated sheet PJ being gripped by the gripping member 32 and the receiving portion 20b, the laminated sheet PJ is wound around the winding roller 20, and the non-joint portion side is sandwiched and conveyed by the third pair of conveying rollers 6. At this time, the rotation of the third pair of conveying rollers 6 causes the sheets P1 and P2 of the laminated sheet PJ to be conveyed synchronously without slipping relative to each other. For example, by increasing the nip pressure of the third pair of conveying rollers 6, using a roller material with a large coefficient of friction, or controlling the driving method of each roller of the third pair of conveying rollers 6, slipping between the two sheets P1 and P2 is less likely to occur, and a desired gap C can be formed in the laminated sheet PJ to peel (separate) the two sheets P1 and P2. In this case, the number of conveying times of the laminated sheet PJ until the intermediate sheet PM is inserted into the laminated sheet PJ can also be reduced.

[0053] <Modification Example 1> As shown in FIG. 16, the laminating apparatus 50 as Modification Example 1 incorporates the sheet peeling apparatus 1 shown in FIG. 1. And the laminating apparatus 50 is provided with a laminating section 51 for performing a laminating process on the laminated sheet PJ in a state where the intermediate sheet PM is inserted between the two sheets P1 and P2 peeled by the sheet peeling apparatus 1, downstream (in the positive direction downstream) of the third pair of conveying rollers 6 of the sheet peeling apparatus 1. In the laminating section 51, a plurality of pairs of heat and pressure applying rollers are installed to apply heat and pressure to the laminated sheet PJ while conveying the laminated sheet PJ with the intermediate sheet PM inserted therein in the positive direction. The laminated sheet PJ that has passed through the laminating section 51 will be joined throughout in a state where the intermediate sheet PM is inserted inside. Then, the laminated sheet PJ that has been subjected to such a laminating process is discharged outside the apparatus by the discharge roller pair 7 and placed on the discharge tray 13. Thus, the laminating apparatus 50 in Modification 1 performs a series of operations including a step of feeding the sheets PJ and PM, a step of separating two sheets P1 and P2 of the laminated sheet PJ, a step of inserting the intermediate sheet PM between the two separated sheets P1 and P2, and a step of performing a laminating process on the laminated sheet PJ with the intermediate sheet PM inserted therein, thereby enhancing the convenience for the user. Particularly, if the front end surface of the laminated sheet P is damaged, it becomes difficult to perform the laminating process on that portion, making the configuration of the present invention useful. Also, in the laminating apparatus 50 in Modification 1, since the movable conveyance guide plate 23 is provided in the conveyance path between the winding roller 20 and the third pair of conveyance rollers 6, it is possible to reduce the occurrence of conveyance failures of the laminated sheet PJ and the intermediate sheet PM in that conveyance path.

[0054] <Modification 2> As shown in FIG. 17, an image forming system 200 as Modification 2 includes a laminating apparatus 50 shown in FIG. 16 installed in an image forming apparatus 100 that forms an image on a sheet P. Referring to FIG. 17, in the image forming apparatus 100, first, an original document D is conveyed (fed) from the original document table in the direction of the arrow in the figure by the conveyance rollers of the original document conveyance apparatus 110 and passes over the original document reading apparatus 102. At this time, in the original document reading apparatus 102, the image information of the original document D passing above is optically read. Then, the optical image information read by the original document reading apparatus 102 is converted into an electrical signal and then transmitted to the writing apparatus 103. Then, from the writing apparatus 103, laser light based on the image information of the electrical signal is emitted toward each of the photosensitive drums 105Y, 105M, 105C, and 105K for each color, and the exposure process is performed. Then, a charging process, an exposure process, and a developing process are performed on the photosensitive drums 105Y, 105M, 105C, and 105K of the respective image forming units 104Y, 104M, 104C, and 104K, and desired images are respectively formed on the photosensitive drums 105Y, 105M, 105C, and 105K. After that, the images formed on the photoreceptor drums 105Y, 105M, 105C, and 105K are transferred and superimposed as a color image onto the intermediate transfer belt 178. Further, the color image formed on the intermediate transfer belt 178 is transferred to the sheet P (the sheet that becomes the intermediate sheet PM) fed from the feeding device 112 by the feeding roller 197 and conveyed at the position facing the secondary transfer roller 189. After that, the sheet P (intermediate sheet PM) onto which the color image has been transferred is conveyed to the position of the fixing device 120. Then, the color image transferred onto the surface is fixed onto the sheet P. After that, the sheet P is discharged from the image forming apparatus 100 by the discharge roller pair 131 and fed into the laminating apparatus 50 as the intermediate sheet PM. At this time, in the laminating apparatus 50 (sheet peeling device 1), the process (the process of peeling the laminated sheet PJ) described above with reference to FIGS. 5 to 8 has been completed, and after the intermediate sheet PM is inserted into the laminating apparatus 50 (sheet peeling device 1), the process (the process of inserting the intermediate sheet PM into the laminated sheet PJ) described with reference to FIG. 9 will be performed. Further, after the laminating process on the laminated sheet PJ into which the intermediate sheet PM has been inserted is performed in the laminating unit 51, the laminated sheet PJ will be discharged outside the apparatus by the discharge roller pair 7 and placed on the discharge tray 13. In this way, a series of image forming processes (printing operations) by the image forming apparatus 100 and a series of sheet peeling processes and laminating processes by the laminating apparatus 50 using the intermediate sheet PM formed by the image forming apparatus 100 in the image forming system 200 will be completed. In addition, in the second modification, the image forming system 200 is configured by installing the laminating apparatus 50 in the image forming apparatus 100, but the image forming system 200 can also be configured by installing the sheet peeling device 1 shown in FIG. 1 in the image forming apparatus 100. In addition, in Modification 2, the present invention is applied to the color image forming apparatus 100, but the present invention can naturally be applied to a monochrome image forming apparatus. Also, in Modification 2, the present invention is applied to the electrophotographic image forming apparatus 100, but the application of the present invention is not limited thereto, and the present invention can also be applied to other types of image forming apparatuses (for example, an inkjet image forming apparatus, a stencil printing machine, etc.). And also in the laminating apparatus 50 of the image forming system 200 in Modification 2, since the movable conveyance guide plate 23 is provided in the conveyance path between the winding roller 20 and the third conveyance roller pair 6, it is possible to reduce the occurrence of conveyance failures of the polymerization sheet PJ and the intermediate sheet PM in that conveyance path.

[0055] <Modification 3> As shown in FIG. 18, as Modification 3, in the image forming system 200, the laminating apparatus 50 shown in FIG. 16 is detachably installed with respect to the image forming apparatus 100 that forms an image on the sheet P shown in FIG. 17. Referring to FIG. 18, in the image forming system 200, after passing through the image forming process described above with reference to FIG. 16, the sheet P (which is the intermediate sheet PM on which a desired image is formed) discharged from the discharge roller pair 131 of the image forming apparatus 100 is fed into the laminating apparatus 50, then inserted into the polymerization sheet PJ in the same manner, and then subjected to a laminating process, and is discharged by the discharge roller pair 7 and placed on the discharge tray 13. Also, when a mode in which such a laminating process is not performed is selected, in the image forming system 200, the sheet P on which an image is formed through the image forming process is discharged out of the apparatus from the second discharge roller pair 132 of the image forming apparatus 100 and placed on the second discharge tray 150. Here, the laminating device 50 is detachably installed with respect to the image forming apparatus 100, and can be removed from the image forming apparatus 100 when the laminating device 50 is not needed. And when the laminating device 50 is removed in this way, the mounting surface 149 on which the laminating device 50 was mounted functions as a discharge tray, and the sheet P (the sheet P on which a desired image is formed) discharged from the discharge roller pair 131 to the outside of the apparatus is placed on it. In addition, in the third modification, although the laminating device 50 is detachably installed in the image forming system 200, the sheet peeling device 1 shown in FIG. 1 can also be detachably installed in the image forming system 200. Also, in the laminating device 50 of the image forming system 200 in the third modification, since the movable conveyance guide plate 23 is provided in the conveyance path between the winding roller 20 and the third conveyance roller pair 6, it is possible to reduce the occurrence of conveyance failures of the laminated sheet PJ and the intermediate sheet PM in that conveyance path.

[0056] In addition, in the image forming system 200 in the third modification, the laminating device 50 is detachably installed in a space formed below the original document conveyance device 110 in the image forming apparatus 100. On the other hand, as in the image forming system 200 shown in FIG. 19(A), the laminating device 50 can also be detachably installed on the side of the image forming apparatus 100 (the side on which the sheet P after image formation is discharged). In that case, in the laminating device 50, the first feed tray 11 on which the laminated sheet PJ is loaded is arranged at the top, and the sheet peeling unit 19 (winding roller 20), the laminating unit 51, the discharge tray 13, etc. can be arranged in order from above to below. Also, a conveyance path (conveyance roller pairs 58, 59) for discharging the sheet P discharged from the image forming apparatus 100 without performing laminating processing can be provided separately from the conveyance path for guiding the intermediate sheet PM discharged from the image forming apparatus 100 to the sheet peeling unit 19 (winding roller 20) in the laminating device 50. Also, a relay device 300 for guiding the sheet P (including those that will become the middle sheet PM) discharged from the image forming apparatus 100 to the laminating device 50 can be installed. In that case, it can also be configured to feed the middle sheet PM from the relay device 300. Also, as in the image forming system 200 shown in FIG. 19(B), a post-processing device 400 for performing post-processing such as punching or stapling on the sheet P (which has not been subjected to laminating) discharged from the image forming apparatus 100 after passing through the laminating device 50 can be installed. In that case, the sheet after post-processing will be discharged to the discharge tray 401 of the post-processing device 400.

[0057] As described above, the sheet peeling device 1 in the present embodiment performs a peeling process of peeling the non-bonded portion of the laminated sheet PJ in which two sheets P1 and P2 are overlapped and bonded at the joint A, and an insertion process of inserting the middle sheet PM between the two peeled sheets P1 and P2. A sheet peeling unit 19 is provided. Also, with the conveyance direction from the sheet peeling unit 19 as the positive direction and the conveyance direction toward the sheet peeling unit 19 as the negative direction, a third conveyance roller pair (conveyance roller pair) capable of conveying the laminated sheet PJ in the forward and reverse directions is provided. And the sheet peeling unit 19 includes a winding roller 20 that rotates in a predetermined rotation direction and winds the laminated sheet PJ, and a peeling claw 16 (peeling member) that moves from a retracted position that does not obstruct the conveyance of the laminated sheet PJ or the middle sheet PM between the winding roller 20 and the third conveyance roller pair 6 and is inserted into the gap C formed between the two sheets P1 and P2. Also, two branch conveyance paths K4 and K5 that branch in different directions from the conveyance path K3 are provided across the conveyance path K3 between the winding roller 20 and the third conveyance roller pair 6. Furthermore, a movable conveyance guide plate 23 (movable conveyance guide member) that is configured to be able to guide the laminated sheet PJ or the middle sheet PM and is movable in the forward and reverse directions in the conveyance path K3 is provided. Thereby, conveyance failures of the laminated sheet PJ and the middle sheet PM are less likely to occur in the conveyance path between the winding roller 20 and the third conveyance roller pair 6.

[0058] Note that the present invention is not limited to this embodiment, and it is obvious that within the scope of the technical idea of the present invention, this embodiment can be appropriately changed in addition to what is suggested in this embodiment. Also, the number, position, shape, etc. of the above-described constituent members are not limited to this embodiment, and can be set to appropriate numbers, positions, shapes, etc. for implementing the present invention.

Explanation of Reference Numerals

[0059] 1 Sheet peeling device (sheet processing device), 6 Third pair of conveying rollers (pair of conveying rollers), 15 Switching claw (switching member), 16 Peeling claw (peeling member), 19 Sheet peeling section, 20 Winding roller, 23 Movable conveying guide plate (movable conveying guide member), 23a Conveying guide surface (conveying guide range), 50 Laminating processing device, 85 Guide plate motor (guide member drive mechanism), 100 Image forming device, 200 Image forming system, P, P1, P2 Sheets, PM Intermediate sheet, PJ Polymerized sheet, A Joint, K4, K5 Branch conveying paths.

[0060] Note that the aspects of the present invention can also be, for example, combinations of the following Supplementary Notes 1 to 12. (Supplementary Note 1) A sheet peeling section that performs a peeling process of peeling a non-joint portion of a polymerized sheet in which two sheets are overlapped and joined at a joint portion, and performs an insertion process of inserting an intermediate sheet between the two peeled sheets; A pair of conveying rollers capable of conveying the polymerized sheet in the forward and reverse directions, with the conveying direction from the sheet peeling section as the forward direction and the conveying direction toward the sheet peeling section as the reverse direction; Comprising The sheet peeling part a winding roller that rotates in a predetermined rotation direction and winds the laminated sheet, a peeling member that moves from a retracted position that does not obstruct the conveyance of the laminated sheet or the middle sheet between the winding roller and the pair of conveyance rollers and is inserted into a gap formed between the two sheets, and includes two branch conveyance paths that branch in different directions from the conveyance path across the conveyance path between the winding roller and the pair of conveyance rollers, a movable conveyance guide member that is configured to guide the laminated sheet or the middle sheet and is movable in the forward and reverse directions in the conveyance path, A sheet peeling device characterized by being provided. (Supplementary Note 2) The movable conveyance guide member is installed on the side opposite to the side where the winding roller is installed in the conveyance path, a first position having a conveyance guide range from a position upstream in the forward conveyance direction from the winding roller to the peeling member in the conveyance path, and a second position having a conveyance guide range from a position upstream in the conveyance direction in the conveyance path to the pair of conveyance rollers, and is configured to be movable between the two. The sheet peeling device according to Supplementary Note 1, characterized in that. (Supplementary Note 3) When the laminated sheet is conveyed in the forward direction with the peeling member located at the retracted position in the conveyance path, the movable conveyance guide member is moved from the first position to the second position in accordance with the conveyance of the laminated sheet. The sheet peeling device according to Supplementary Note 2, characterized in that. (Supplementary Note 4) When the laminated sheet is conveyed in the reverse direction with the peeling member located at the retracted position in the conveyance path, the movable conveyance guide member is moved from the second position to the first position in accordance with the conveyance of the laminated sheet. The sheet peeling device according to Supplementary Note 2 or Supplementary Note 3, characterized in that. (Supplementary Note 5) When the peeling member moves from the retracted position and is inserted into the gap while the laminated sheet is being conveyed in the forward or reverse direction in the conveyance path, the movable conveyance guide member is positioned at the first position, and the sheet peeling device according to any one of appendices 2 to 4. (Appendix 6) When the middle sheet is inserted between the two sheets in a state where the two sheets of the laminated sheet are peeled and located in the two branch conveyance paths in the conveyance path, the movable conveyance guide member moves from the first position to the second position in accordance with the forward conveyance of the middle sheet, and the sheet peeling device according to any one of appendices 2 to 5. (Appendix 7) When the laminated sheet with the middle sheet inserted between the two sheets is conveyed in the forward direction by the pair of conveyance rollers, the movable conveyance guide member moves from the second position to the first position, and the sheet peeling device according to appendix 6. (Appendix 8) A sheet peeling device according to any one of appendices 1 to 7, A laminating processing unit that performs a laminating process on the laminated sheet in a state where a middle sheet is inserted between the two sheets peeled by the sheet peeling device, A laminating processing apparatus, characterized by comprising the same. (Appendix 9) A sheet peeling device according to any one of appendices 1 to 7, An image forming device that forms an image on a sheet, An image forming system, characterized by comprising the same. (Appendix 10) A laminating processing apparatus according to appendix 8, An image forming device that forms an image on the middle sheet, An image forming system, characterized by comprising the same. (Appendix 11) An image forming system, characterized in that the sheet peeling device according to any one of appendices 1 to 7 is detachably installed with respect to an image forming device that forms an image on the middle sheet. (Appendix 12) An image forming system, characterized in that the laminating apparatus described in Appendix 8 is detachably installed with respect to an image forming apparatus that forms an image on the middle sheet.

Prior Art Documents

Patent Documents

[0061]

Patent Document 1

Claims

1. A sheet peeling unit that performs a peeling process of peeling a non-joined portion of a laminated sheet in which two sheets are overlapped and joined at a joined portion, and then performs an insertion process of inserting an intermediate sheet between the two peeled sheets; A pair of conveying rollers capable of conveying the laminated sheet in both forward and reverse directions, with the conveying direction from the sheet peeling unit being the forward direction and the conveying direction toward the sheet peeling unit being the reverse direction; Comprising: The sheet peeling unit includes: A winding roller that rotates in a predetermined rotation direction and winds the laminated sheet; A peeling member that moves from a retracted position that does not obstruct the conveyance of the laminated sheet or the intermediate sheet between the winding roller and the pair of conveying rollers and is inserted into a gap formed between the two sheets; Comprising: Two branch conveying paths that branch in different directions from the conveying path across the conveying path between the winding roller and the pair of conveying rollers; A movable conveying guide member configured to be able to guide the laminated sheet or the intermediate sheet and movable in the forward and reverse directions in the conveying path; A sheet peeling device, characterized in that the above are provided.

2. The movable conveying guide member: Is installed on the side opposite to the side where the winding roller is installed in the conveying path, And is configured to be movable between a first position where the conveying guide range is the range from the winding roller to the position upstream in the forward conveying direction with respect to the peeling member in the conveying path, and a second position where the conveying guide range is the range from the position upstream in the conveying direction to the pair of conveying rollers in the conveying path. The sheet peeling device according to claim 1.

3. When the laminated sheet is conveyed in the forward direction with the peeling member located at the retracted position in the conveying path, the movable conveying guide member is moved from the first position to the second position in accordance with the conveyance of the laminated sheet. The sheet peeling device according to claim 2.

4. When the laminated sheet is conveyed in the reverse direction with the peeling member located at the retracted position in the conveying path, the movable conveying guide member is moved from the second position to the first position in accordance with the conveyance of the laminated sheet. The sheet peeling device according to claim 2 or claim 3.

5. The sheet peeling device according to claim 2, wherein when the peeling member moves from the retracted position and is inserted into the gap while the laminated sheet is being conveyed in the forward or reverse direction in the conveyance path, the movable conveyance guide member is located at the first position.

6. The sheet peeling device according to claim 2, wherein when the middle sheet is inserted between the two sheets while the two sheets of the laminated sheet are located in the two branch conveyance paths and peeled in the conveyance path, the movable conveyance guide member is moved from the first position to the second position in accordance with the forward conveyance of the middle sheet.

7. The sheet peeling device according to claim 6, wherein when the laminated sheet with the middle sheet inserted between the two sheets is conveyed in the forward direction by the pair of conveyance rollers, the movable conveyance guide member is moved from the second position to the first position.

8. A sheet peeling device according to claim 1 or claim 2, A laminating device comprising a laminating unit that performs a laminating process on the laminated sheet in a state where a middle sheet is inserted between the two sheets peeled by the sheet peeling device. characterized by comprising the same.

9. A sheet peeling device according to claim 1 or claim 2, An image forming device that forms an image on a sheet, characterized by comprising the same.

10. A laminating device according to claim 8, An image forming device that forms an image on the middle sheet, characterized by comprising the same.

11. An image forming system, wherein the sheet peeling device according to claim 1 or claim 2 is detachably installed with respect to an image forming device that forms an image on the middle sheet.

12. An image forming system, wherein the laminating device according to claim 8 is detachably installed with respect to an image forming device that forms an image on the middle sheet.

Images