Sheet conveying device, laminating machine and printing machine

Abstract

A sheet conveyance device (21) conveys a sheet (11), the sheet conveyance device (21) being provided with a first rotating unit (22) for releasing the sheet (11), a second rotating unit (23) for winding the sheet (11), and a sheet floating unit (31) which is disposed between the first rotating unit (22) and the second rotating unit (23) in a conveyance path of the sheet (11) and which floats the sheet (11), the sheet floating unit (31) having a first discharge unit (33), and the first discharge unit (33) being disposed between the first rotating unit (22) and the second rotating unit (23). And a first ejection section (33) that faces the sheet (11) and ejects gas toward the sheet (11), the width of the first ejection section (33) being larger than the width of the sheet (11).

Description

Technical Field

[0001] The present disclosure relates to a sheet conveying device, a laminator, and a printing press. Background Art

[0002] For example, when conveying a belt for a semiconductor device, the drum device described in Patent Document 1 causes the belt for a semiconductor device to float by ejecting air from the inside of the rotating drum to the outside.

[0003] Prior Art Documents Patent Documents Patent Document 1: Japanese Unexamined Patent Application Publication No. 2007-201380 Summary of the Invention Technical Problem to be Solved by the Invention

[0004] In Patent Document 1, since the sheet is caused to float from the drum by ejecting air, there is a possibility that the sheet may deviate laterally or snake when conveying a sheet such as a belt for a semiconductor device. Technical Solution for Solving the Technical Problem

[0005] (1) A sheet conveying device for solving the above problems, which conveys a sheet, the sheet conveying device includes a first rotating portion, a second rotating portion, and a sheet floating portion, the first rotating portion releases the sheet, the second rotating portion winds up the sheet, the sheet floating portion is disposed between the first rotating portion and the second rotating portion in the conveying route of the sheet and causes the sheet to float, the sheet floating portion has a first ejection portion that faces the sheet and ejects gas toward the sheet, and the width of the first ejection portion is greater than the width of the sheet.

[0006] According to this structure, since the width of the first ejection portion is greater than the width of the sheet, an air wall formed by the gas ejected from the first ejection portion can be formed in the width direction of the sheet. Therefore, the sheet conveying device can suppress lateral deviation or snake of the sheet during conveyance.

[0007] (2) The sheet conveying device as described in (1) above, wherein the sheet has a first sheet surface, a second sheet surface opposite to the first sheet surface, a first layer including the first sheet surface and including a conductive layer, and a second layer including the second sheet surface and provided to be peelable from the first layer, and the sheet floating portion is disposed in the conveying route with the first ejection portion facing the first sheet surface.

[0008] According to this structure, the first sheet surface can be caused to float by the sheet floating portion. Therefore, the conductive layer is not easily scratched by contacting the first layer from the outside.

[0009] (3) The sheet conveying device as described in (1) or (2) above, wherein the sheet floating portion has a gas storage portion, the gas storage portion constitutes a storage space for temporarily storing the gas supplied by the gas supply portion, the first ejection portion is formed as a part of the storage wall constituting the gas storage portion, the first ejection portion has a plurality of through holes penetrating the storage wall, and the through holes have a first hole extending from the inner surface of the storage wall and a second hole extending while expanding toward the outer surface of the storage wall.

[0010] According to this structure, the sheet floating portion can appropriately float the sheet through the first hole and the second hole.

[0011] (4) The sheet conveying device as described in (3) above, wherein the sheet floating portion has an internal pressure adjusting portion, and the internal pressure adjusting portion reduces the difference between the internal pressure near the gas supply port in the gas storage portion and the internal pressure near the far side of the gas supply port.

[0012] According to this structure, the sheet floating portion can reduce the deviation of the air volume ejected from each through hole of the first ejection portion through the internal pressure adjusting portion.

[0013] (5) The sheet conveying device as described in (4) above, wherein the internal pressure adjusting portion includes an adjusting plate, the adjusting plate is configured to divide the storage space in the gas storage portion into a first space and a second space, the first space includes the first ejection portion, the second space does not include the first ejection portion but includes the gas supply port, and the adjusting plate has a plurality of communication holes for communicating the first space and the second space.

[0014] According to this structure, the sheet floating portion can reduce the deviation of the air volume ejected from each through hole of the first ejection portion through the adjusting plate.

[0015] (6) The sheet conveying device as described in (3) above, wherein the first ejection portion of the sheet floating portion has a central region and a peripheral region located around the central region, and the number of the plurality of through holes provided in the central region is greater than the number of the plurality of through holes provided in the peripheral region.

[0016] According to this structure, the sheet floating portion can appropriately float the sheet.

[0017] (7) The sheet conveying device according to any one of (1) to (6) above, further comprising a sheet attaching / detaching unit disposed between the first rotating unit and the second rotating unit in the conveying path of the sheet and attaching / detaching the sheet. The sheet attaching / detaching unit has an adsorption unit that faces the sheet and adsorbs the sheet, and the width of the adsorption unit is smaller than the width of the sheet.

[0018] According to this structure, since the width of the adsorption unit is smaller than the width of the sheet, the sheet attaching / detaching unit can appropriately adsorb the sheet.

[0019] (8) The sheet conveying device according to (7) above, wherein the sheet attaching / detaching unit includes a second jetting unit that faces the sheet and jets gas toward the sheet.

[0020] According to this structure, the sheet attaching / detaching unit can appropriately float the sheet by means of the second jetting unit.

[0021] (9) The laminator for solving the above problems includes the sheet conveying device and the pressing device according to any one of (1) to (8) above.

[0022] According to this structure, the laminator can suppress the lateral deviation or meandering of the sheet during conveyance by means of the sheet conveying device. Therefore, the laminator can appropriately laminate the workpiece.

[0023] (10) The printing machine for solving the above problems includes the sheet conveying device and the printing device according to any one of (1) to (8) above.

[0024] According to this structure, the printing machine can suppress the lateral deviation or meandering of the sheet during conveyance by means of the sheet conveying device. Therefore, the printing machine can appropriately print the sheet.

[0025] Advantages of the Invention The sheet conveying device, laminator, and printing machine of the present disclosure can suppress the lateral deviation or meandering of the sheet during conveyance. Description of the Drawings

[0026] Figure 1 It is a schematic view of a laminator including the sheet conveying device and the pressing device of the first embodiment. Figure 2 is Figure 1 a schematic view of the sheet conveying device. Figure 3 It is a view showing Figure 1 a cross-section of the sheet floating portion and a schematic view of the gas supply portion. Figure 4 It is a view showing along Figure 3Schematic diagram of the sheet floating part of the cross-section of the D4-D4 line. Figure 5 It shows Figure 1 Expansion view of the first ejection part of the sheet floating part. Figure 6 It is Figure 5 Enlarged view of multiple first through-holes. Figure 7 It is Figure 5 Enlarged view of multiple second through-holes. Figure 8 It shows Figure 1 Schematic diagram of the cross-section of the sheet loading / unloading part. Figure 9 It shows the cross-section of the sheet loading / unloading part along the Figure 8 D9-D9 line of. Figure 10 Schematic diagram of the cross-section of the sheet loading / unloading part showing the second embodiment. Figure 11 It shows the cross-section of the sheet loading / unloading part along the Figure 10 D11-D11 line of. Figure 12 It shows Figure 11 Schematic diagram of the sheet, loading / unloading part and second ejection part. Figure 13 Schematic diagram of the sheet conveying device showing the third embodiment. Figure 14 Schematic diagram of a printing press including the sheet conveying device and printing device of the fourth embodiment. Specific embodiments

[0027] With reference to Figures 1 to 14 The sheet conveying device 21, laminator 1 and printing press 3 will be described.

[0028] (First embodiment) <Laminator> As Figure 1 shown, the laminator 1 laminates workpieces. The laminator 1 is an MLCC (Multi-Layer Ceramic Capacitor) laminator, LTCC (Low Temperature Co-fired Ceramics) laminator, lithium-ion laminator, laminator for manufacturing laminated inductors or laminator for manufacturing laminated resistors.

[0029] The laminator 1 is equipped with a sheet conveying device 21 and a pressing device 2. The pressing device 2 is a device for pressing a workpiece. The pressing device 2 presses the workpiece to crimp the workpiece. The pressing device 2 repeatedly crimps the workpiece each time the workpiece is conveyed into the pressing device 2, thereby forming a laminate of the workpiece.

[0030] <Sheet> As Figures 1 to 4 shown, the sheet 11 contains workpieces. The sheet 11 is, for example, a green ceramic sheet. The sheet 11 may be a metal film or a resin film. Hereinafter, the sheet 11 will be described as a green ceramic sheet.

[0031] The sheet 11 has a first sheet surface 12, a second sheet surface 13 on the opposite side of the first sheet surface 12, a first layer 14, and a second layer 15. The first layer 14 includes the first sheet surface 12 and includes a conductive layer 14A. The second layer 15 includes the second sheet surface 13 and is provided so as to be peelable from the first layer 14. The second layer 15 is, for example, a carrier film.

[0032] The sheet 11 is disposed in the sheet conveying device 21 in a state of being wound into a cylindrical shape outwardly on either the first sheet surface 12 or the second sheet surface 13. For example, the sheet 11 is disposed in the sheet conveying device 21 in a state of being wound into a cylindrical shape outwardly on the first sheet surface 12.

[0033] <Sheet Conveying Device> The sheet conveying device 21 is a device for conveying the sheet 11. The sheet conveying device 21 is used, for example, in the manufacture of various electronic components.

[0034] As Figure 2 shown, the sheet conveying device 21 includes a first rotating portion 22 that releases the sheet 11, a second rotating portion 23 that winds up the sheet 11, and a sheet floating portion 31 that is disposed between the first rotating portion 22 and the second rotating portion 23 in the conveying path 21A of the sheet 11 and floats the sheet 11.

[0035] At least one sheet floating portion 31 is provided in the sheet conveying device 21. For example, two sheet floating portions 31 are provided in the sheet conveying device 21. The sheet floating portion 31 faces the first sheet surface 12 of the sheet 11. It is also possible to provide only one sheet floating portion 31. When only one sheet floating portion 31 is provided, a member different from the sheet floating portion 31 having a structure for floating the sheet 11 is disposed, for example, in a portion where other sheet floating portions 31 are provided.

[0036] The sheet conveying device 21 is provided with a gas supply unit 27. The gas supply unit 27 supplies gas to the sheet floating portion 31. The gas is, for example, air. When the sheet conveying device 21 is provided with a plurality of sheet floating portions 31, the gas supply unit 27 can be provided separately for each sheet floating portion 31, or it can be configured such that one gas supply unit 27 supplies gas to each sheet floating portion 31. When one gas supply unit 27 supplies gas to each sheet floating portion 31, the gas supply unit 27 has a plurality of ports.

[0037] The first rotating portion 22 rotates by means of a first actuator. The first actuator includes, for example, an electric motor. The electric motor of the first actuator is controlled by, for example, an inverter. The sheet 11 is disposed on the first rotating portion 22 in a state where it is wound into a cylindrical shape with the first sheet surface 12 facing outward. The first rotating portion 22 releases the sheet 11 by means of the rotational force of the first actuator.

[0038] The second rotating portion 23 rotates by means of a second actuator different from the first actuator. The second actuator includes, for example, an electric motor. The electric motor of the second actuator is controlled by, for example, an inverter. The second rotating portion 23 winds up the remaining portion 16 of the sheet 11 that has been peeled off by the sheet attaching / detaching portion 41 by means of the rotational force of the second actuator.

[0039] The sheet conveying device 21 is further provided with a sheet attaching / detaching portion 41. The sheet attaching / detaching portion 41 is disposed between the first rotating portion 22 and the second rotating portion 23 in the conveying path 21A and attaches and detaches the sheet 11. The sheet attaching / detaching portion 41 is, for example, a peeling workbench. The sheet attaching / detaching portion 41 faces the second sheet surface 13 of the sheet 11.

[0040] The sheet attaching / detaching portion 41 adsorbs or floats the sheet 11. The laminator 1 is provided with, for example, an adsorption holding head 1A having a cutter. The sheet attaching / detaching portion 41 peels off the portion other than the workpiece from the sheet 11 through coordinated operation with the adsorption holding head 1A. In the present embodiment, the portion other than the workpiece of the sheet 11 is referred to as the remaining portion 16 of the sheet.

[0041] The adsorption holding head 1A cuts a part of the first layer 14 in the sheet 11 by means of the cutter to form a workpiece, and adsorbs and holds the workpiece. Then, the sheet attaching / detaching portion 41 moves horizontally relative to the adsorption holding head 1A while adsorbing the second sheet surface 13 of the sheet 11. In this way, the remaining portion 16 of the sheet is peeled off from the sheet 11 while the workpiece is held by the adsorption holding head 1A. Then, the adsorption holding head 1A conveys the workpiece to the pressing device 2 and overlaps the workpiece on the laminate located inside the pressing device 2. Then, the sheet attaching / detaching portion 41 returns from the position where it has moved relative to the adsorption holding head 1A to the position below the adsorption holding head 1A in a state where the sheet 11 has floated.

[0042] The sheet conveying device 21 is provided with a sheet loading / unloading part gas supply part 28. The sheet loading / unloading part gas supply part 28 supplies gas to the sheet loading / unloading part 41. The gas is, for example, air. The sheet conveying device 21 is provided with a gas suction part 29. The gas suction part 29 sucks gas from the sheet loading / unloading part 41. The sheet loading / unloading part gas supply part 28 and the gas suction part 29 may be provided in one device, or may be provided in respective devices.

[0043] The sheet conveying device 21 is disposed between the first rotating part 22 and the second rotating part 23 in the conveying path 21A, and further includes a plurality of guide rollers 24 for guiding the sheet 11. The guide rollers 24 are provided, for example, at specific positions in the conveying path 21A. The sheet conveying device 21 includes, for example, seven guide rollers 24. The plurality of guide rollers 24 face the second sheet surface 13 of the sheet 11 respectively.

[0044] The sheet conveying device 21 further includes a plurality of tension adjusting rollers 25. The tension adjusting rollers 25 move according to the release of the sheet 11 and the movement of the sheet 11. The tension adjusting rollers 25 are disposed between the first rotating part 22 and the second rotating part 23 in the conveying path 21A, and the tension adjusting rollers 25 suppress the slack of the sheet 11 caused by the difference in rotational speed between the first rotating part 22 and the second rotating part 23. The plurality of tension adjusting rollers 25 are configured to be able to move the support shaft up and down or left and right, for example. The sheet conveying device 21 includes, for example, two tension adjusting rollers 25. The plurality of tension adjusting rollers 25 face the second sheet surface 13 of the sheet 11.

[0045] The sheet conveying device 21 further includes at least one tension roller 26. The at least one tension roller 26 is disposed between the first rotating part 22 and the second rotating part 23 in the conveying path 21A, and the at least one tension roller 26 adjusts the tension applied to the sheet 11. The sheet conveying device 21 includes, for example, two tension rollers 26. For example, at least one of the tension rollers 26 faces the second sheet surface 13 of the sheet 11. The at least one tension roller 26 is provided at a specific position in the conveying path 21A, for example. The at least one tension roller 26 may also be configured to adjust the tension applied to the sheet 11 by moving the support shaft left and right.

[0046] The conveying path 21A will be described. The sheet 11 released from the first rotating part 22 is conveyed to the sheet floating part 31 while being guided by two guide rollers 24. A first tension adjusting roller 25 is disposed between the two sheet floating parts 31. The sheet 11 is conveyed from the first sheet floating part 31 to the first tension adjusting roller 25, and then conveyed to the second sheet floating part 31. Then, the sheet 11 is conveyed from the second sheet floating part 31 to the first tension roller 26. When the sheet 11 is conveyed to the first tension roller 26, it is conveyed to the sheet loading / unloading part 41 while being guided by the guide rollers 24.

[0047] When the sheet 11 is transported by the sheet loading and unloading unit 41, it is held by the suction holding head 1A. Then, a part of the sheet 11 is cut by the suction holding head 1A to form a workpiece. The workpiece is transported to the pressing device 2 by the suction holding head 1A and then overlapped on the laminate located inside the pressing device 2. The remaining sheet portion 16 peeled off from the sheet 11 is transported to the second tension roller 26 while being guided by the guide roller 24. After the remaining sheet portion 16 is transported to the second tension roller 26, it is transported to the second tension adjusting roller 25. Then, the remaining sheet portion 16 of the sheet 11 is transported from the second tension adjusting roller 25 to the second guide roller 24. Finally, the remaining sheet portion 16 is wound up by the second rotating unit 23.

[0048] <Sheet floating portion> Refer to Figures 1 to 7 The sheet floating portion 31 will be described in detail. When the sheet conveying device 21 has a plurality of sheet floating portions 31, the plurality of sheet floating portions 31 each have the same structure.

[0049] The sheet floating portion 31 has a sheet floating portion main body 32. At least a part of the sheet floating portion main body 32 faces the sheet 11. At least a part of the sheet floating portion main body 32 forms a U shape. The part of the sheet floating portion main body 32 provided with the first ejection portion 33 has a bent portion 32A and a flat portion 32B that are bent along the conveying route 21A.

[0050] The sheet floating portion 31 has a first ejection portion 33. The first ejection portion 33 is configured to face the sheet 11 and eject gas toward the sheet 11. The first ejection portion 33 is provided on the sheet floating portion main body 32. The sheet floating portion 31 is arranged on the conveying route 21A such that the first ejection portion 33 faces the first sheet surface 12 of the sheet 11.

[0051] The gas supply unit 27 has a first port 27A and a second port 27B. The sheet floating portion 31 has a gas supply port 31A. The first port 27A and the second port 27B are respectively connected to the gas supply port 31A of their respective sheet floating portions 31. The gas supply unit 27 supplies gas to the first sheet floating portion 31 via the first port 27A. The gas supply unit 27 supplies gas to the second sheet floating portion 31 via the second port 27B. When the sheet conveying device 21 has one sheet floating portion 31, either the first port 27A or the second port 27B can be omitted.

[0052] The sheet floating portion 31 includes a gas storage portion 34, and the gas storage portion 34 constitutes a storage space 35 for temporarily storing the gas supplied by the gas supply unit 27. The gas storage portion 34 is formed by a storage wall 34A. The storage wall 34A has an inner surface 34B facing the storage space 35 and an outer surface 34C facing the sheet 11.

[0053] The first ejection part 33 is configured as a part of the housing wall 34A that constitutes the gas housing part 34. The first ejection part 33 has a plurality of through holes 36 that penetrate the housing wall 34A. The plurality of through holes 36 are holes for ejecting the gas supplied by the gas supply part 27 onto the sheet 11.

[0054] The through hole 36 has a first hole 36A that extends from the inner surface 34B of the housing wall 34A and a second hole 36B that extends while expanding toward the outer surface 34C of the housing wall 34A from the first hole 36A. The gas supplied by the gas supply part 27 is ejected at a predetermined pressure through the first hole 36A and is ejected over a wide range through the second hole 36B.

[0055] As Figure 4 shown, the sheet floating part 31 has an internal pressure adjusting part 37, and the internal pressure adjusting part 37 reduces the difference between the internal pressure near the proximal side of the gas supply port 31A in the gas housing part 34 and the internal pressure near the distal side of the gas supply port 31A. Hereinafter, the internal pressure near the proximal side of the gas supply port 31A in the gas housing part 34 will be referred to as the proximal internal pressure, and the internal pressure near the distal side of the gas supply port 31A in the gas housing part 34 will be referred to as the distal internal pressure.

[0056] The internal pressure adjusting part 37 includes an adjusting plate 38. The adjusting plate 38 is, for example, a plate made of metal. The adjusting plate 38 may also be a plate made of resin. The adjusting plate 38 is bent, for example, along the bent part 32A of the sheet floating part main body 32. The adjusting plate 38 is configured to divide the storage space 35 in the gas housing part 34 into a first space 35A and a second space 35B. The first space 35A includes the first ejection part 33. The second space 35B does not include the first ejection part 33 but includes the gas supply port 31A.

[0057] The adjusting plate 38 has a plurality of communication holes 38A that communicate the first space 35A and the second space 35B. When the gas supplied by the gas supply part 27 is supplied to the second space 35B, the gas moves from the second space 35B to the first space 35A through the plurality of communication holes 38A.

[0058] When the supply amount of the gas is large, the proximal internal pressure becomes lower than the distal internal pressure as the gas from the gas supply unit 27 is supplied. Near the distal end of the gas supply port 31A in the gas storage unit 34, the gas is compressed, so the distal internal pressure is greater than the proximal internal pressure. In contrast, when the supply amount of the gas is small, the proximal internal pressure becomes higher than the distal internal pressure as the gas from the gas supply unit 27 is supplied. Near the distal side of the gas supply port 31A in the gas storage unit 34, since it is far from the gas supply port 31A, the distal internal pressure is lower than the proximal internal pressure. When the sheet floating portion 31 is provided with the regulating plate 38, the gas supplied by the gas supply unit 27 stays in the second space 35B and then moves from the plurality of communication holes 38A of the regulating plate 38 to the first space 35A. Therefore, the difference between the proximal internal pressure and the distal internal pressure in the first space 35A can be reduced.

[0059] As Figure 5 shown, the sheet floating portion main body 32 has a width W11. The first ejection portion 33 has a width W12. The sheet 11 has a width SW. The width W11, the width W12, and the width SW are the widths in the direction perpendicular to the conveying path 21A. The width W11 of the sheet floating portion main body 32 is greater than the width W12 of the first ejection portion 33. The width W12 of the first ejection portion 33 is greater than the width SW of the sheet 11.

[0060] Figure 4 Schematically shows the gas ejected from the first ejection portion 33. Since the width W12 of the first ejection portion 33 is greater than the width SW of the sheet 11, gas walls can be formed on the left and right of the sheet 11 by the gas ejected from the first ejection portion 33. In this way, the lateral deviation and meandering of the sheet 11 can be suppressed.

[0061] The first ejection portion 33 of the sheet floating portion 31 has a central region 33A and a peripheral region 33B located around the central region 33A. The number of the plurality of through holes 36 provided in the central region 33A is greater than the number of the plurality of through holes 36 provided in the peripheral region 33B. In other words, the density of the plurality of through holes 36 in the central region 33A is greater than the density of the plurality of through holes 36 in the peripheral region 33B. The central region 33A is located at the curved portion 32A of the sheet floating portion main body 32 and a part of the flat portion 32B. The peripheral region 33B is located at the flat portion 32B of the sheet floating portion main body 32.

[0062] The flow rate of the gas for floating the sheet 11 is different between the curved portion 32A and the flat portion 32B. Since the tension of the sheet 11 is greater in the curved portion 32A than in the flat portion 32B, the flow rate of the gas for floating the sheet 11 is greater in the curved portion 32A than in the flat portion 32B. Since the central region 33A is provided from near the start of the bending to near the end of the bending, the sheet floating portion 31 can properly float the sheet 11.

[0063] As Figure 6 and Figure 7 shown, a plurality of through holes 36 include a plurality of first through holes 36C and a plurality of second through holes 36D. The diameter R1 of the first hole 36A of the first through hole 36C is smaller than the diameter R2 of the first hole 36A of the second through hole 36D. The maximum diameter MR1 of the second hole 36B of the first through hole 36C is substantially equal to the maximum diameter MR2 of the second hole 36B of the second through hole 36D. The maximum diameter MR1 may also be different from the maximum diameter MR2. The angle AN1 formed by the second hole 36B of the first through hole 36C is substantially equal to the angle AN2 formed by the second hole 36B of the second through hole 36D. The angle AN1 may also be different from the angle AN2.

[0064] A plurality of first through holes 36C are provided in both the central region 33A and the peripheral region 33B. A plurality of second through holes 36D are provided in the central region 33A. Since the diameter R2 of the first hole 36A of the second through hole 36D is larger than the diameter R1 of the first hole 36A of the first through hole 36C, the flow rate of the gas that the second through hole 36D can eject is larger than that of the first through hole 36C. Therefore, a plurality of second through holes 36D are selectively provided in, for example, a portion where the flow rate of the gas is required to lift the sheet 11 in the central region 33A.

[0065] <Sheet loading and unloading unit> Refer to Figure 1 and Figure 8 and Figure 9 The sheet loading and unloading unit 41 will be described in detail. The sheet loading and unloading unit 41 has a sheet loading and unloading unit main body 42. The sheet loading and unloading unit main body 42 is provided in parallel with the pressing device 2 with respect to the sheet conveying device 21. The sheet loading and unloading unit 41 has a gas supply and suction port 41A for supplying or sucking gas.

[0066] The sheet loading and unloading unit 41 has an adsorption part 43, and the adsorption part 43 faces the sheet 11 and adsorbs the sheet 11. The adsorption part 43 is provided in a portion of the sheet loading and unloading unit main body 42 that faces the sheet 11. The sheet loading and unloading unit 41 is arranged on the conveying route 21A such that the adsorption part 43 faces the second sheet surface 13 of the sheet 11.

[0067] The sheet loading and unloading unit 41 has a second ejection part 44, and the second ejection part 44 faces the sheet 11 and ejects gas toward the sheet 11. The second ejection part 44 is provided in a portion of the sheet loading and unloading unit main body 42 that faces the sheet 11. The sheet loading and unloading unit 41 is arranged on the conveying route 21A such that the second ejection part 44 faces the second sheet surface 13 of the sheet 11. In the sheet loading and unloading unit main body 42, the adsorption part 43 is provided in the same portion as the second ejection part 44.

[0068] The sheet loading / unloading unit gas supply unit 28 has a third port 28A. The third port 28A is connected to the gas supply / suction port 41A of the sheet loading / unloading unit 41. The sheet loading / unloading unit gas supply unit 28 supplies gas to the sheet loading / unloading unit 41 via the third port 28A.

[0069] The gas suction unit 29 has a fourth port 29A. The fourth port 29A is connected to the gas supply / suction port 41A of the sheet loading / unloading unit 41. The gas suction unit 29 sucks the gas of the sheet loading / unloading unit 41 via the fourth port 29A.

[0070] The sheet loading / unloading unit gas supply unit 28 has a first switching valve 28B. The gas suction unit 29 has a second switching valve 29B. The third port 28A and the fourth port 29A are both connected to the gas supply / suction port 41A of the sheet loading / unloading unit 41. The sheet loading / unloading unit 41 switches the supply and suction of gas to the sheet loading / unloading unit 41 by switching the opening and closing of the first switching valve 28B and the second switching valve 29B. When the sheet loading / unloading unit gas supply unit 28 supplies gas to the sheet loading / unloading unit 41, the first switching valve 28B is opened and the second switching valve 29B is closed. When the gas suction unit 29 sucks gas from the sheet loading / unloading unit 41, the first switching valve 28B is closed and the second switching valve 29B is opened.

[0071] The sheet loading / unloading unit 41 includes a first gas storage unit 45, and the first gas storage unit 45 includes a first storage space 46 configured to temporarily store the gas supplied by the sheet loading / unloading unit gas supply unit 28. The first gas storage unit 45 is formed by a first storage wall 45A.

[0072] The adsorption unit 43 and the second ejection unit 44 are configured as a part of the first storage wall 45A that forms the first gas storage unit 45. The adsorption unit 43 and the second ejection unit 44 have a plurality of sheet loading / unloading unit through holes 47 that penetrate the first storage wall 45A. The plurality of sheet loading / unloading unit through holes 47 are holes for ejecting the gas supplied by the sheet loading / unloading unit gas supply unit 28 to the sheet 11 or holes for sucking gas through the gas suction unit 29. The plurality of sheet loading / unloading unit through holes 47, for example, have a third hole 47A extending from the first inner surface 45B of the first storage wall 45A and a fourth hole 47B extending while expanding from the third hole 47A toward the first outer surface 45C of the first storage wall 45A.

[0073] As Figure 9 shown, when gas is supplied by the sheet loading / unloading unit gas supply unit 28, the sheet loading / unloading unit 41 has a first internal pressure regulating unit 48 that reduces the difference between the internal pressure near the proximal side of the gas supply / suction port 41A in the first gas storage unit 45 and the internal pressure near the distal side of the gas supply / suction port 41A.

[0074] The first internal pressure adjustment unit 48 includes a sheet loading / unloading unit adjustment plate 48A. The sheet loading / unloading unit adjustment plate 48A is, for example, a metal plate. The sheet loading / unloading unit adjustment plate 48A may also be a resin plate. The sheet loading / unloading unit adjustment plate 48A is configured to divide the first storage space 46 in the first gas storage unit 45 into a third space 46A and a fourth space 46B. The third space 46A includes the adsorption unit 43 and the second ejection unit 44. The fourth space 46B does not include the adsorption unit 43 and the second ejection unit 44, but includes the gas supply / suction port 41A. The sheet loading / unloading unit adjustment plate 48A has a plurality of holes 48B that communicate the third space 46A and the fourth space 46B.

[0075] As Figure 9 shown, the sheet loading / unloading unit main body 42 has a width W21. The adsorption unit 43 has a width W22. The second ejection unit 44 has a width W23. The width W21, the width W22, and the width W23 are widths in a direction perpendicular to the transport path 21A. The width W21 of the sheet loading / unloading unit main body 42 is greater than the width W22 of the adsorption unit 43. The width W21 of the sheet loading / unloading unit main body 42 is greater than the width W23 of the second ejection unit 44. The width W22 of the adsorption unit 43 is less than the width SW of the sheet 11. The width W23 of the second ejection unit 44 is less than the width SW of the sheet 11.

[0076] (Effect of the first embodiment) The effect of the first embodiment will be described.

[0077] (1-1) The sheet transport device 21 transports the sheet 11. The sheet transport device 21 includes a first rotating unit 22, a second rotating unit 23, and a sheet floating unit 31. The first rotating unit 22 releases the sheet 11, the second rotating unit 23 winds up the sheet 11, the sheet floating unit 31 is disposed between the first rotating unit 22 and the second rotating unit 23 in the transport path 21A of the sheet 11 and floats the sheet 11. The sheet floating unit 31 has a first ejection unit 33. The first ejection unit 33 faces the sheet 11 and ejects gas toward the sheet 11. The width W12 of the first ejection unit 33 is greater than the width SW of the sheet 11.

[0078] According to this structure, since the width W12 of the first ejection unit 33 is greater than the width SW of the sheet 11, an air wall formed by the gas ejected from the first ejection unit 33 can be formed in the width direction of the sheet 11. Therefore, the sheet transport device 21 can suppress lateral deviation or snake-like movement of the sheet 11 during transportation.

[0079] (1-2) The sheet 11 has a first sheet surface 12, a second sheet surface 13 on the opposite side of the first sheet surface 12, a first layer 14 including the first sheet surface 12 and including a conductive layer 14A, and a second layer 15 including the second sheet surface 13 and provided so as to be peelable from the first layer 14. The sheet floating portion 31 is provided on the conveyance path 21A such that the first ejection portion 33 faces the first sheet surface 12.

[0080] According to this structure, the first sheet surface 12 can be floated by the sheet floating portion 31. Therefore, the conductive layer 14A is not easily scratched by contacting the first layer 14 from the outside.

[0081] (1-3) The sheet floating portion 31 includes a gas storage portion 34. The gas storage portion 34 constitutes a storage space 35 for temporarily storing the gas supplied by the gas supply portion 27. The first ejection portion 33 is configured such that, as a part of the storage wall 34A constituting the gas storage portion 34, the first ejection portion 33 has a plurality of through holes 36 penetrating the storage wall 34A. The through holes 36 have a first hole 36A extending from the inner surface 34B of the storage wall 34A and a second hole 36B extending while expanding toward the outer surface 34C of the storage wall 34A from the first hole 36A.

[0082] According to this structure, the sheet floating portion 31 can appropriately float the sheet 11 by the first hole 36A and the second hole 36B.

[0083] (1-4) The sheet floating portion 31 has an internal pressure adjusting portion 37. The internal pressure adjusting portion 37 reduces the difference between the internal pressure near the proximal side of the gas supply port 31A in the gas storage portion 34 and the internal pressure near the distal side of the gas supply port 31A.

[0084] According to this structure, the sheet floating portion 31 can reduce the deviation of the air volume ejected from each through hole 36 of the first ejection portion 33 by the internal pressure adjusting portion 37.

[0085] (1-5) The internal pressure adjusting portion 37 includes an adjusting plate 38. The adjusting plate 38 is configured to divide the storage space 35 in the gas storage portion 34 into a first space 35A and a second space 35B. The first space 35A includes the first ejection portion 33. The second space 35B does not include the first ejection portion 33 but includes the gas supply port 31A. The adjusting plate 38 has a plurality of communication holes 38A for communicating the first space 35A and the second space 35B.

[0086] According to this structure, the sheet floating portion 31 can reduce the deviation of the air volume ejected from each through hole 36 of the first ejection portion 33 by the adjusting plate 38.

[0087] (1-6) The first ejection part 33 of the sheet floating part 31 has a central area 33A and a peripheral area 33B located on the periphery of the central area 33A. The number of the plurality of through holes 36 provided in the central area 33A is larger than the number of the plurality of through holes 36 provided in the peripheral area 33B.

[0088] According to this structure, the sheet floating part 31 can properly float the sheet 11.

[0089] (1-7) It further includes a sheet loading and unloading part 41, which is arranged between the first rotating part 22 and the second rotating part 23 in the conveying route 21A of the sheet 11 and performs loading and unloading of the sheet 11. The sheet loading and unloading part 41 has a suction part 43. The suction part 43 faces the sheet 11 and suctions the sheet 11. The width W22 of the suction part 43 is smaller than the width SW of the sheet 11.

[0090] According to this structure, since the width W22 of the suction part 43 is smaller than the width SW of the sheet 11, the sheet loading and unloading part 41 can properly suction the sheet 11.

[0091] (1-8) The sheet loading and unloading part 41 includes a second ejection part 44. The second ejection part 44 faces the sheet 11 and ejects gas toward the sheet 11.

[0092] According to this structure, the sheet loading and unloading part 41 can properly float the sheet 11 by means of the second ejection part 44.

[0093] (1-9) The laminator 1 includes a sheet conveying device 21 and a pressing device 2.

[0094] According to this structure, the laminator 1 can suppress the lateral deviation or snaking of the sheet 11 during conveyance by means of the sheet conveying device 21. Therefore, the laminator 1 can properly laminate the workpiece.

[0095] (Second Embodiment) Refer to Figures 8 to 10 The sheet conveying device 21 of the second embodiment will be described. In the second embodiment, only the points different from the first embodiment will be described. Among them, the components the same as those in the first embodiment are given the same names and their descriptions are omitted.

[0096] <Sheet Loading and Unloading Part> The sheet loading and unloading unit 41 of the second embodiment further includes a first sheet loading and unloading unit gas supply port 41B and a second sheet loading and unloading unit gas supply port 41C for supplying gas. The sheet loading and unloading unit gas supply unit 28 includes a fifth port 28C and a sixth port 28D. The fifth port 28C is connected to the first sheet loading and unloading unit gas supply port 41B of the sheet loading and unloading unit 41. The sheet loading and unloading unit gas supply unit 28 supplies gas to the sheet loading and unloading unit 41 via the fifth port 28C. The sixth port 28D is connected to the second sheet loading and unloading unit gas supply port 41C of the sheet loading and unloading unit 41. The sheet loading and unloading unit gas supply unit 28 supplies gas to the sheet loading and unloading unit 41 via the sixth port 28D.

[0097] The fifth port 28C may also be provided in a gas supply source different from the sheet loading and unloading unit gas supply unit 28. When the fifth port 28C is provided in a gas supply source different from the sheet loading and unloading unit gas supply unit 28, the sheet loading and unloading unit 41 supplies gas from a gas supply source different from the sheet loading and unloading unit gas supply unit 28 via the fifth port 28C. The sixth port 28D may also be provided in a gas supply source different from the sheet loading and unloading unit gas supply unit 28. When the sixth port 28D is provided in a gas supply source different from the sheet loading and unloading unit gas supply unit 28, the sheet loading and unloading unit 41 supplies gas from a gas supply source different from the sheet loading and unloading unit gas supply unit 28 via the sixth port 28D.

[0098] The adsorption unit 43 is provided in a part of the second ejection unit 44 in the sheet loading and unloading unit main body 42. The other part of the second ejection unit 44 is provided in the sheet loading and unloading unit main body 42 on the outer side in the width direction than the adsorption unit 43.

[0099] The sheet loading and unloading unit 41 further includes a partition wall 52, and the partition wall 52 divides the first gas storage unit 45 into a second gas storage unit 49, a third gas storage unit 50, and a fourth gas storage unit 51. The partition wall 52 includes a first partition wall 52A, and the first partition wall 52A divides the first gas storage unit 45 into a second gas storage unit 49 and a third gas storage unit 50. The partition wall 52 includes a second partition wall 52B, and the second partition wall 52B divides the first gas storage unit 45 into a third gas storage unit 50 and a fourth gas storage unit 51.

[0100] The first storage space 46 is partitioned by a first partition wall 52A into a second storage space 53 and a third storage space 54. The first storage space 46 is partitioned by a second partition wall 52B into the third storage space 54 and a fourth storage space 55. The second gas containment section 49 constitutes the second storage space 53. The third gas containment section 50 constitutes the third storage space 54. The fourth gas containment section 51 constitutes the fourth storage space 55. A portion of the second ejection section 44 corresponding to the third gas containment section 50 is configured as an adsorption section 43. When adsorbing the sheet 11, the gas in the third gas containment section 50 is sucked. The second ejection section 44 is used to lift the sheet 11. Specifically, when it is desired to lift the sheet 11, gas is supplied to the second gas containment section 49, the third gas containment section 50, and the fourth gas containment section 51.

[0101] The second gas containment section 49 is supplied with gas from the sheet loading / unloading section gas supply section 28 via the fifth port 28C. The third gas containment section 50 is supplied with gas from the sheet loading / unloading section gas supply section 28 via the third port 28A. The third gas containment section 50 sucks gas via the fourth port 29A by the gas suction section 29. The fourth gas containment section 51 is supplied with gas from the sheet loading / unloading section gas supply section 28 via the sixth port 28D.

[0102] When gas is supplied by the sheet loading / unloading section gas supply section 28, the sheet loading / unloading section 41 has a second internal pressure regulating section 56, and the second internal pressure regulating section 56 reduces the difference between the internal pressure near the proximal side of the first sheet loading / unloading section gas supply port 41B and the internal pressure near the distal side of the first sheet loading / unloading section gas supply port 41B in the second gas containment section 49. The second internal pressure regulating section 56 has the same structure as the first internal pressure regulating section 48. The second internal pressure regulating section 56 is, for example, a plate that partitions the second storage space 53 into two spaces.

[0103] When gas is supplied by the sheet loading / unloading section gas supply section 28, the sheet loading / unloading section 41 has a third internal pressure regulating section 57, and the third internal pressure regulating section 57 reduces the difference between the internal pressure near the proximal side of the gas supply / suction port 41A and the internal pressure near the distal side of the gas supply / suction port 41A in the third gas containment section 50. The third internal pressure regulating section 57 has the same structure as the first internal pressure regulating section 48. The third internal pressure regulating section 57 is, for example, a plate that partitions the third storage space 54 into two spaces.

[0104] When gas is supplied by the sheet loading / unloading unit gas supply unit 28, the sheet loading / unloading unit 41 has a fourth internal pressure adjustment unit 58. The fourth internal pressure adjustment unit 58 reduces the difference between the internal pressure near the proximal side of the second sheet loading / unloading unit gas supply port 41C in the fourth gas storage unit 51 and the internal pressure near the distal side of the second sheet loading / unloading unit gas supply port 41C. The fourth internal pressure adjustment unit 58 has the same structure as the first internal pressure adjustment unit 48. The fourth internal pressure adjustment unit 58 is, for example, a plate that divides the fourth storage space 55 into two spaces.

[0105] As Figure 12 shown, the width W21 of the sheet loading / unloading unit main body 42 is greater than the width W22 of the suction unit 43 and the width W23 of the second ejection unit 44. The width W22 of the suction unit 43 is less than the width SW of the sheet 11. The width W23 of the second ejection unit 44 is greater than the width SW of the sheet 11.

[0106] (Effect of the second embodiment) The effect of the second embodiment will be described. (2-1) Figure 11 Schematically shows the gas ejected from the second ejection unit 44. Since the width W23 of the second ejection unit 44 is greater than the width SW of the sheet 11, gas walls formed by the gas ejected from the first ejection unit 33 can be formed on the left and right of the sheet 11. In this way, lateral deviation and meandering of the sheet 11 can be suppressed.

[0107] (Third embodiment) Refer to Figure 13 The sheet conveying device 21 of the third embodiment will be described. In the third embodiment, only the points different from the first embodiment will be described. Among them, the components the same as those in the first embodiment are given the same names and their descriptions are omitted.

[0108] The sheet conveying device 21 of the third embodiment includes a first rotating unit 22, a second rotating unit 23, a plurality of guide rollers 24, a tension roller 26, a sheet floating unit 31, and a sheet loading / unloading unit 41. The plurality of guide rollers 24 includes, for example, three guide rollers 24. In the third embodiment, the tension roller 26 is configured to move left and right along the support shaft to adjust the tension applied to the sheet 11.

[0109] The conveyance path 21A of the third embodiment will be described. The sheet 11 released from the first rotating section 22 is conveyed to the sheet floating section 31 while being guided by the first guide roller 24. The sheet 11 conveyed to the sheet floating section 31 is conveyed to the tension roller 26. After the sheet 11 is conveyed to the tension roller 26, it is conveyed to the sheet loading / unloading section 41 while being guided by the guide roller 24. In the sheet loading / unloading section 41, the workpiece cut from the first layer 14 of the sheet 11 sent to the pressing device 2 is laminated by the pressing device 2. The remaining sheet portion 16 peeled off from the first layer 14 of the sheet 11 is wound up by the second rotating section 23 while being guided by two guide rollers 24.

[0110] (Effect of the Third Embodiment) The effect of the third embodiment will be described. (3-1) The sheet conveyance device 21 of the third embodiment includes a first rotating section 22, a second rotating section 23, a plurality of guide rollers 24, a tension roller 26, a sheet floating section 31, and a sheet loading / unloading section 41. Therefore, the sheet conveyance device 21 can convey the sheet 11 with a minimum structure, and thus the number of parts can be reduced.

[0111] (Fourth Embodiment) Refer to Figure 14 The sheet conveyance device 21 and the printing machine 3 of the fourth embodiment will be described. In the fourth embodiment, only the points different from the first embodiment will be described. The components identical to those in the first embodiment are given the same names and their descriptions are omitted.

[0112] As Figure 14 shown, the printing machine 3 includes a sheet conveyance device 21 and a printing device 4. The printing device 4 is configured to print internal electrodes on the sheet 11. The printing device 4 is configured to perform, for example, screen printing or inkjet printing. The sheet conveyance device 21 of the fourth embodiment has the same structure as the sheet conveyance device 21 of the first embodiment except that it does not have a sheet loading / unloading section 41.

[0113] The conveyance path 21A of the fourth embodiment will be described. The sheet 11 released from the first rotating section 22 is conveyed to the sheet floating section 31 while being guided by two guide rollers 24. A first tension adjusting roller 25 is disposed between the two sheet floating sections 31. The sheet 11 is conveyed from the first sheet floating section 31 to the first tension adjusting roller 25, and then conveyed to the second sheet floating section 31. Then, the sheet 11 is conveyed from the second sheet floating section 31 to the tension roller 26. After the sheet 11 is conveyed to the tension roller 26, it is conveyed to the printing device 4 while being guided by the guide roller 24.

[0114] The sheet 11 printed by the printing device 4 is conveyed to the sheet floating portion 31 while being guided by the guide roller 24. A second tension adjusting roller 25 is disposed between the two sheet floating portions 31. The sheet 11 is conveyed from the first sheet floating portion 31 to the first tension adjusting roller 25, and then conveyed to the second sheet floating portion 31. Subsequently, the sheet 11 is conveyed from the second sheet floating portion 31 to the second guide roller 24. The sheet 11 is wound by the second rotating portion 23 while being guided by the second guide roller 24.

[0115] (Effect of the Fourth Embodiment) The effect of the fourth embodiment will be described. (4-1) The printing press 3 includes a sheet conveying device 21 and a printing device 4.

[0116] According to this structure, the printing press 3 can suppress the lateral deviation or serpentine movement of the sheet 11 during conveyance by the sheet conveying device 21. Therefore, the printing press 3 can be appropriately printed on the sheet 11.

[0117] <Modification Example> The sheet conveying device, laminator, and printing press of the present disclosure may also be the following modification examples other than the above-described embodiments, or a form combining at least two non-contradictory modification examples.

[0118] · As long as the sheet floating portion 31 of the second embodiment has a structure for floating the sheet 11, it may not have the structure in which the width W12 of the first ejection portion 33 is greater than the width SW of the sheet 11.

[0119] · The sheet loading / unloading portion 41 of the third embodiment may also have the same structure as the sheet loading / unloading portion 41 of the second embodiment.

[0120] The description of each embodiment is an exemplification of one form of the sheet conveying device, laminator, and printing press of the present disclosure, and is not limited to this form. The sheet conveying device, laminator, and printing press of the present disclosure may also be other different forms different from the forms exemplified in the embodiments.

[0121] The ordinal numbers such as "first, second, third" used in this specification are only used to distinguish a plurality of components having the same name, and have no special meaning. Symbol Explanation

[0122] 1 Laminator 2 Pressing Device 3 Printing Press 4 Printing Device 11 Sheet 12 First Sheet Surface 13 Second Sheet Surface 14th layer 1 14A Conductive layer 15th layer 2 21 Sheet handling device 21A Handling route 22 1st rotating part 23 2nd rotating part 27 Gas supply part 31 Sheet floating part 31A Gas supply port 33 1st ejection part 33A Central area 33B Peripheral area 34 Gas containment part 34A Containment wall 34B Inner surface 34C Outer surface 35 Storage space 35A 1st space 35B 2nd space 36 Through-hole 36A 1st hole 36B 2nd hole 37 Internal pressure adjustment part 38 Adjusting plate 38A Communication hole 41 Sheet loading / unloading part 43 Adsorption part 44 2nd ejection part.

Claims

1. A sheet conveying device that conveys a sheet, The sheet conveying device includes a first rotating part, a second rotating part, and a sheet floating part, The first rotating part releases the sheet, The second rotating part winds up the sheet, The sheet floating part is disposed between the first rotating part and the second rotating part in the conveying path of the sheet and floats the sheet, The sheet floating part has a first jet part that faces the sheet and jets gas toward the sheet, The width of the first jet part is greater than the width of the sheet.

2. The sheet conveying device according to claim 1, wherein, The sheet has a first sheet surface, a second sheet surface opposite to the first sheet surface, a first layer including the first sheet surface and including a conductive layer, and a second layer including the second sheet surface and configured to be peelable from the first layer, The sheet floating part is disposed in the conveying path such that the first jet part faces the first sheet surface.

3. The sheet conveying device according to claim 1, wherein, The sheet floating part includes a gas storage part that forms a storage space for temporarily storing the gas supplied by a gas supply part, The first jet part is formed as a part of the storage wall that forms the gas storage part, The first jet part has a plurality of through holes that penetrate the storage wall, The through holes have a first hole extending from the inner surface of the storage wall and a second hole extending while expanding from the first hole toward the outer surface of the storage wall.

4. The sheet conveying device according to claim 3, wherein, The sheet floating part has an internal pressure adjusting part that reduces the difference between the internal pressure near the gas supply port and the internal pressure near the far side of the gas supply port in the gas storage part.

5. The sheet conveying device according to claim 4, wherein, The internal pressure adjusting part includes an adjusting plate, The adjusting plate is configured to divide the storage space in the gas storage part into a first space and a second space, The first space includes the first jet part, The second space does not include the first jet part but includes the gas supply port, The adjusting plate has a plurality of communication holes that communicate the first space and the second space.

6. The sheet conveying device according to claim 3, wherein, The first jet part of the sheet floating part has a central area and a peripheral area located around the central area, The number of the plurality of through holes provided in the central area is greater than the number of the plurality of through holes provided in the peripheral area.

7. The sheet conveying device according to claim 1, wherein, It further includes a sheet loading / unloading part that is disposed between the first rotating part and the second rotating part in the conveying path of the sheet and performs loading and unloading of the sheet, The sheet loading / unloading part has an adsorption part that faces the sheet and adsorbs the sheet, The width of the adsorption part is less than the width of the sheet.

8. The sheet conveying device according to claim 7, wherein, The sheet loading / unloading section includes a second ejection section that faces the sheet and ejects gas toward the sheet.

9. A laminator including the sheet transfer device and the pressing device according to any one of claims 1 to 8.

10. A printing machine including the sheet transfer device and the printing device according to any one of claims 1 to 8.

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