Sheet Processing Device

Abstract

To provide a sheet processing device that can perform the processing that suppresses warping even when long sheets are warped.SOLUTION: A sheet processing device 100 includes: a conveying section 10 with a gripping section 11 that grips a long sheet 1; and a suction section 12 that sucks the sheet 1 by suction; a suction stage 21 that sucks the sheet 1 by suction; and a processing section 22 that processes the sheet 1 in the state sucked by the suction stage 21. The conveying section 10 transports the sheet 1 to the suction stage 21 with the gripping section 11 gripping the sheet 1, and with the suction section 12 sucking the sheet 1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a sheet processing apparatus that processes long sheets. [Background technology]

[0002] 2. Description of the Related Art Sheet processing apparatuses that transport and process long sheets are known.

[0003] Patent Document 1 discloses an electrode manufacturing apparatus equipped with a hand that grips a sheet-like electrode material and transports it to a cutting position where it is cut. Fig. 12 is a plan view that schematically shows the configuration of the electrode manufacturing apparatus 200 described in Patent Document 1. Fig. 13 is a side view that schematically shows the configuration of the electrode manufacturing apparatus 200 described in Patent Document 1.

[0004] The electrode manufacturing apparatus 200 includes a hand 210, a first suction conveyor 220, a second suction conveyor 230, a front-end mold 240, and a rear-end mold 250. The hand 210 moves upward while holding a sheet-like electrode material 260, thereby transporting the electrode material 260 to the front-end mold 240 while floating above the first suction conveyor 220. The front-end mold 240 and the rear-end mold 250 each cut the long electrode material 260. When cutting the electrode material 260, the electrode material 260 is attracted and held by the first suction conveyor 220. The cut electrode material 260 is transported further beyond the front-end mold 240 by the second suction conveyor 230. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-227123 Summary of the Invention [Problem to be solved by the invention]

[0006] Here, the sheet-like electrode material 260 may be warped in at least one of the width and length directions. In the electrode manufacturing apparatus 200 described in Patent Document 1, the hand 210 grips the electrode material 260 and transports it through the air to the front end die 240 where the cutting process is performed. However, as shown in FIGS. 12 and 13 , the front portion of the electrode material 260 is not gripped. Therefore, if the electrode material 260 is warped, it is transported to the front end die 240 while still warped, and the cutting process is performed on the warped electrode material 260 in the front end die 240. Therefore, due to the warping, the electrode material 260 may not be cut properly. This is true even when the electrode material 260 is subjected to a process other than cutting, and also when the sheet to be processed is not the electrode material 260.

[0007] The present invention is intended to solve the above-mentioned problems, and aims to provide a sheet processing device that can process long sheets while suppressing warping, even if the sheets are warped. [Means for solving the problem]

[0008] The sheet processing apparatus of the present invention comprises: a conveying unit including a gripping unit that pinches and grips a long sheet, and a suction unit that sucks the sheet by suction; a suction stage that adsorbs the sheet by suction; a processing unit that processes the sheet in a state where the sheet is attracted by the suction stage; Equipped with The conveying unit conveys the sheet to the suction stage while the gripping unit grips the sheet and the suction unit adsorbs the sheet. [Effects of the Invention]

[0009] According to the sheet processing device of the present invention, the conveying unit conveys the sheet to the suction stage while the gripping unit grips the sheet and the suction unit adsorbs the sheet, and the processing unit processes the sheet while the sheet is adsorbed on the suction stage, so that even if the sheet is warped, it can be processed while suppressing the warping. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a side view schematically illustrating an overall configuration of a sheet processing apparatus according to an embodiment. [Figure 2] FIG. 2 is a perspective view schematically illustrating a configuration of a conveying unit of the sheet processing apparatus according to the embodiment. [Figure 3] FIG. 2 is a perspective view schematically illustrating the configuration of a conveying unit of the sheet processing apparatus when viewed from the suction surface side. [Figure 4] 1(a) to 1(c) are perspective views each showing a schematic shape of a warped sheet. [Figure 5] 10 is a side view schematically illustrating a configuration of the sheet processing apparatus when a gripping portion is located forward of a suction portion in a sheet conveying direction. FIG. [Figure 6] (a) is a plan view showing a schematic configuration when the gripping section and the suction section are arranged side by side in the width direction of the sheet, and (b) is a diagram showing a schematic configuration when the conveying section shown in (a) is viewed in the direction of arrow Y1. [Figure 7] (a) is a plan view showing a schematic configuration when two conveying units are arranged side by side in the width direction of the sheet, and (b) is a diagram showing a schematic configuration when the conveying unit shown in (a) is viewed in the direction of arrow Y2. [Figure 8] 1A to 1C are diagrams illustrating the operation of a sheet processing apparatus according to an embodiment. [Figure 9] 8A to 8C are diagrams illustrating the operation of the sheet processing apparatus according to an embodiment. [Figure 10](a) is a side view showing a schematic configuration of a sheet processing apparatus when the sheet transport direction is diagonal, and (b) is a side view showing a schematic configuration of a sheet processing apparatus when the sheet transport direction is vertical. [Figure 11] 10 is a side view schematically illustrating the configuration of the sheet processing apparatus when the second flat plate portion is positioned above the sheet and the first flat plate portion is positioned below the sheet. FIG. [Figure 12] FIG. 1 is a plan view schematically showing the configuration of an electrode manufacturing apparatus described in Patent Document 1. [Figure 13] 1 is a side view schematically showing the configuration of an electrode manufacturing apparatus described in Patent Document 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] The features of the present invention will be specifically described below by showing embodiments of the present invention.

[0012] Fig. 1 is a side view schematically showing the overall configuration of a sheet processing apparatus 100 according to an embodiment. Fig. 2 is a perspective view schematically showing the configuration of a conveying unit 10, which will be described later, of the sheet processing apparatus 100 according to an embodiment. Fig. 3 is a perspective view schematically showing the configuration of the conveying unit 10 of the sheet processing apparatus 100, when viewed from the side of an adsorption surface 12a, which will be described later.

[0013] The sheet processing apparatus 100 according to the embodiment includes a conveying unit 10, a suction stage 21, and a processing unit 22.

[0014] The conveying unit 10 includes a gripping unit 11 that pinches and grips the long sheet 1, and a suction unit 12 that sucks and holds the sheet 1 by suction.

[0015] As shown in FIG. 1 , the long sheet 1 is unwound from an unwinding roller 2 and fed to a position where a conveying unit 10 is located. The width of the sheet 1 is, for example, 50 mm to 200 mm, and the thickness is, for example, 0.05 mm to 0.1 mm. The sheet 1 is made of any material, including at least one of metal, resin, and ceramic. The sheet 1 may be made of multiple materials with different shrinkage rates stacked in a direction perpendicular to the surface of the sheet 1, or may be made of a material that maintains a certain deformation when an external force is released. For example, the sheet 1 may be any one of a ceramic green sheet, a sheet having a two-layer structure of ceramic and resin, a sheet having a two-layer structure of metal foil and resin, a sheet having a two-layer structure of metal foil and ceramic, a sheet having a two-layer structure of metal foil and an electrode active material layer, and a printed and dried sheet.

[0016] As described above, warping may occur in a sheet 1 having a configuration in which multiple types of materials with different shrinkage rates are stacked in a direction perpendicular to the surface of the sheet 1. Figures 4(a) to 4(c) are perspective views that schematically show the shape of a warped sheet 1.

[0017] FIG. 4(a) is a diagram showing an example of the shape of sheet 1 in a state where warping occurs such that the sheet 1 bulges upward. More specifically, warping occurs such that the central portion of sheet 1 in the width direction bulges upward. FIG. 4(b) is a diagram showing an example of the shape of sheet 1 in a state where warping occurs such that the sheet bulges downward. More specifically, warping occurs such that the central portion of sheet 1 in the width direction bulges downward. Note that the upper and lower sides are based on the state in which sheet 1 without warping occurs and is placed on a horizontal surface. FIG. 4(c) is a diagram showing an example of the shape of sheet 1 in a state in which warping occurs in the length direction of sheet 1.

[0018] The sheet processing apparatus 100 in one embodiment can be particularly preferably used for a warped sheet 1. As shown in Figures 4(a) to 4(c), the warped sheet 1 has warped in at least one of the length and width directions of the sheet 1. As will be described later, the sheet processing apparatus 100 in one embodiment can process the sheet 1 while suppressing warping in any of the following cases: when the sheet 1 has warped in such a way that it bulges upward; when the sheet 1 has warped in such a way that it bulges downward; when the sheet 1 has warped in the length direction; and when the sheet 1 has warped in the width direction.

[0019] The gripping unit 11 of the conveying unit 10 includes a first flat plate portion 11a and a second flat plate portion 11b that are positioned facing each other in a direction perpendicular to the surface of the sheet 1, and the sheet 1 is sandwiched and gripped between the first flat plate portion 11a and the second flat plate portion 11b. An elastic body may be provided in the portion of the gripping unit 11 that contacts the sheet 1, specifically, the portion where the first flat plate portion 11a contacts the sheet 1 and the portion where the second flat plate portion 11b contacts the sheet 1. By providing an elastic body in the portion where the gripping unit 11 contacts the sheet 1, the frictional resistance between the sheet 1 and the gripping unit 11 can be increased, allowing the sheet 1 to be gripped more reliably. The elastic body is, for example, rubber or resin.

[0020] Furthermore, instead of providing an elastic body at the portion where the gripping portion 11 comes into contact with the sheet 1, an anti-slip agent may be applied, or unevenness may be provided. A known anti-slip agent can be used. By configuring the portion where the gripping portion 11 comes into contact with the sheet 1 to be applied with an anti-slip agent, the sheet 1 can be gripped more reliably. Furthermore, by configuring the portion where the gripping portion 11 comes into contact with the sheet 1 to be uneven, the sheet 1 can be gripped more reliably.

[0021] The suction unit 12 of the conveying unit 10 has a suction surface 12a that suctions the sheet 1. As shown in FIG. 3, the suction surface 12a is provided with a plurality of suction holes 12b. The shape, size, and number of the suction holes 12b are arbitrary. For example, the suction holes 12b may be circular, and the suction holes 12b provided on the suction surface 12a at positions corresponding to the edges of the sheet 1 may be groove-shaped. By providing the suction holes 12b provided at positions corresponding to the edges of the sheet 1 with groove-shaped holes, the sheet 1 can be more reliably suctioned.

[0022] The suction holes 12b are connected to a suction device (not shown), and suction by the suction device generates a suction force on the adsorption surface 12a. However, the configuration for generating the suction force is not limited to the above-described configuration, and for example, the suction force may be generated by a configuration in which a vacuum pad is embedded in the adsorption surface 12a.

[0023] The adsorption surface 12a may have holes or depressions depending on the shape of the destination of the sheet 1 to be conveyed.

[0024] The widthwise dimension of the suction surface 12a is preferably larger than the widthwise dimension of the sheet 1. The widthwise direction of the suction surface 12a and the widthwise direction of the sheet 1 are the same. By making the widthwise dimension of the suction surface 12a larger than the widthwise dimension of the sheet 1, the suction surface 12a can more reliably suction the sheet 1, and the sheet 1 can be conveyed while effectively suppressing warping. However, the widthwise dimension of the suction surface 12a may be smaller than the widthwise dimension of the sheet 1.

[0025] 1, the suction unit 12 is configured to suck the sheet 1 from above. That is, the adsorption surface 12a of the suction unit 12 is located above the sheet 1. However, as will be described later, the suction unit 12 may be configured to suck the sheet 1 from below.

[0026] The conveying unit 10 is configured to be able to convey the sheet 1 to the suction stage 21 with the gripping unit 11 gripping the sheet 1 and the suction unit 12 adsorbing the sheet 1. When the conveying unit 10 conveys the sheet 1, it is preferable that the leading edge of the sheet 1 in the conveying direction does not protrude from the adsorption surface 12a. By not having the leading edge of the sheet 1 in the conveying direction protrude from the adsorption surface 12a, the sheet 1 can be more reliably adsorbed by the adsorption surface 12a during conveying, and the sheet 1 can be conveyed in a state in which warping is effectively suppressed. However, the leading edge of the sheet 1 in the conveying direction may protrude from the adsorption surface 12a during conveying. Even in this case, it is preferable that the amount by which the leading edge of the sheet 1 protrudes from the adsorption surface 12a is small in order to more reliably adsorb the sheet 1.

[0027] In this embodiment, the suction unit 12 is provided integrally with the first flat plate portion 11a of the gripping portion 11. Specifically, the second flat plate portion 11b and a portion of the first flat plate portion 11a facing the second flat plate portion 11b constitute the gripping portion 11. The suction unit 12 is provided on a portion of the first flat plate portion 11a other than the portion facing the second flat plate portion 11b. However, the suction unit 12 may be provided separately from the first flat plate portion 11a that constitutes the gripping portion 11.

[0028] 1, in this embodiment, the suction unit 12 is located ahead of the gripping unit 11 in the conveyance direction of the sheet 1. That is, the suction unit 12 is located ahead of the gripping unit 11 in the conveyance direction of the sheet 1, and the gripping unit 11 is located behind it.

[0029] 5, the gripping unit 11 may be located further forward in the conveying direction of the sheet 1 than the suction unit 12. In this case, however, when the conveying unit 10 conveys the sheet 1 to the suction stage 21, the conveying unit 10 needs to be raised until the second flat plate portion 11b is positioned higher than the suction stage 21. Therefore, from the viewpoint of minimizing the amount of lift of the conveying unit 10, it is preferable that the suction unit 12 be located further forward in the conveying direction of the sheet 1 than the gripping unit 11.

[0030] 6(a) and 6(b), the gripping unit 11 and the suction unit 12 may be arranged side by side in the width direction of the sheet 1. FIG. 6(a) is a plan view schematically showing the configuration of the conveying unit 10 when the gripping unit 11 and the suction unit 12 are arranged side by side in the width direction of the sheet 1, and FIG. 6(b) is a diagram schematically showing the configuration of the conveying unit 10 shown in FIG. 6(a) when viewed in the direction of arrow Y1. With a configuration in which the gripping unit 11 and the suction unit 12 are arranged side by side in the width direction of the sheet 1, the arrangement space for the conveying unit 10 in the length direction of the sheet 1 can be reduced.

[0031] Furthermore, as shown in FIGS. 7(a) and 7(b), two conveying units 10 may be provided side by side in the width direction of the sheet 1. FIG. 7(a) is a plan view schematically showing a configuration in which two conveying units 10 are provided side by side in the width direction of the sheet, and FIG. 7(b) is a diagram schematically showing a configuration of the conveying unit 10 shown in FIG. 7(a) when viewed in the direction of arrow Y2. According to the configuration example shown in FIG. 7, two gripping units 11 and two suction units 12 are each arranged side by side in the width direction of the sheet 1. In the configuration example shown in FIG. 7, the suction unit 12 is located forward of the gripping unit 11 in the conveyance direction of the sheet 1, but it may be located behind the gripping unit 11 or arranged side by side with the gripping unit 11 in the width direction of the sheet 1.

[0032] The conveying unit 10 is configured to be movable in the length direction of the long sheet 1 and in a direction perpendicular to the surface of the sheet 1. As will be described later, when conveying the sheet 1 to the suction stage 21, the conveying unit 10 moves in the direction perpendicular to the surface of the sheet 1 and then moves in the length direction of the sheet 1.

[0033] The suction stage 21 adsorbs the sheet 1 by suction. For example, the suction stage 21 is provided with a plurality of suction holes, and adsorbs the sheet 1 by suction through the suction holes. The suction stage 21 may be configured as a part of the processing unit 22.

[0034] The processing unit 22 performs a process on the sheet 1 while it is being sucked by the suction stage 21. The process performed on the sheet 1 by the processing unit 22 is, for example, at least one of cutting the sheet 1, printing on the sheet 1, discharging a liquid or other material onto the sheet 1, heat treating the sheet 1, measuring the sheet 1, inspecting the sheet 1, laser processing the sheet 1, assembling the sheet 1, stacking the sheet 1, and conveying the sheet 1. However, the process performed on the sheet 1 by the processing unit 22 is not limited to the above-mentioned processes.

[0035] The operation of the sheet processing apparatus 100 in this embodiment will be described below with reference to FIGS. 8 and 9. Here, the sheet processing apparatus 100 will be described as further including a receiving tray 30. The receiving tray 30 is provided in front of the processing section 22 in the conveying direction of the sheet 1. The receiving tray 30 is configured to be able to attract the sheet 1 placed thereon by suction. The processing section 22 will be described as cutting the sheet 1.

[0036] FIG. 8(a) is a diagram showing a state in which a sheet piece 1s cut in the processing unit 22 has been removed from the processing unit 22. Although not shown in FIG. 8(a), the cut sheet piece 1s is, for example, sucked by a suction head and removed from the processing unit 22. When the cut sheet piece 1s is removed from the processing unit 22, the long sheet 1 is gripped by the gripping unit 11 of the conveying unit 10, sucked by the suction unit 12, and also sucked by the receiving table 30. Here, at least the portion of the long sheet 1 gripped by the gripping unit 11 extends horizontally. As shown in FIG. 8(a), the receiving table 30 is disposed between the second flat plate portion 11b of the conveying unit 10 and the suction stage 21 in the conveying direction of the sheet 1.

[0037] After releasing the suction of the receiving table 30 from the state shown in FIG. 8(a), the conveying unit 10 is moved in a direction perpendicular to the surface of the sheet 1 and then in the lengthwise direction of the sheet 1, thereby conveying the sheet 1 to the suction stage 21 (FIG. 8(b)). Here, the conveying unit 10 is moved upward and then in a horizontal direction toward the suction stage 21, thereby conveying the sheet 1 to the suction stage 21. When the conveying unit 10 conveys the sheet 1 to the suction stage 21, by moving in a direction perpendicular to the surface of the sheet 1 and then in the lengthwise direction of the sheet 1, it is possible to prevent the sheet 1 from coming into contact with the suction stage 21.

[0038] When conveying sheet 1 to suction stage 21, conveying unit 10 conveys sheet 1 with gripping unit 11 gripping sheet 1 and suction unit 12 adsorbing sheet 1. By conveying sheet 1 with gripping unit 11 gripping sheet 1 and suction unit 12 adsorbing sheet 1, even if sheet 1 is warped, it is possible to convey sheet 1 with the warping suppressed.

[0039] Here, when conveying sheet 1 to suction stage 21, conveying unit 10 may move in the length direction of sheet 1 while moving in the direction perpendicular to the surface of sheet 1. For example, conveying unit 10 may start moving in the direction perpendicular to the surface of sheet 1 and in the length direction of sheet 1 simultaneously, or may start moving in the length direction of sheet 1 while moving in the direction perpendicular to the surface of sheet 1. By moving in the length direction of sheet 1 while conveying unit 10 moves in the direction perpendicular to the surface of sheet 1, sheet 1 can be conveyed to suction stage 21 more quickly.

[0040] When the conveying unit 10 conveys the sheet 1 to the suction stage 21, tension is applied to the sheet 1 in the length direction. Any method can be used to apply tension to the sheet 1. For example, tension control roller 40 can be moved so that tension is continuously applied to the sheet 1 in the length direction. It is preferable that tension is constantly applied to the sheet 1 in the length direction during the processes shown in FIGS. 8(a) to 9(c).

[0041] Next, the conveying unit 10 is moved toward the suction stage 21 to place the sheet 1 on the suction stage 21 (FIG. 8(c)). Here, the conveying unit 10 is moved downward to place the sheet 1 on the suction stage 21. The suction stage 21 adsorbs the placed sheet 1 by sucking it. The receiving table 30 also adsorbs the sheet 1 by sucking it. At this time, the second flat plate portion 11b of the conveying unit 10 is located outside the processing unit 22.

[0042] When the conveying unit 10 conveys the sheet 1 to the suction stage 21, the suction unit 12 releases suction on the sheet 1 at least after the suction stage 21 starts suctioning the sheet 1. Specifically, the suction unit 12 releases suction at the same time as the suction stage 21 starts suctioning, or a little after the start of suction. Therefore, during the period until the sheet 1 that has been sucked by the suction unit 12 of the conveying unit 10 is sucked by the suction stage 21, the sheet 1 is sucked by at least one of the suction unit 12 and the suction stage 21. This makes it possible to prevent the sheet 1 from shifting in position when placed on the suction stage 21.

[0043] Next, the grip of the sheet 1 by the gripping portion 11 of the conveying portion 10 is released (FIG. 9(a)). In this state, the sheet 1 is sucked and held by the suction stage 21 and the receiving table 30.

[0044] In this way, the suction unit 12 sucks the sheet 1 from above, and the sheet 1 is placed on the suction stage 21, so that the processing unit 22 can process the sheet 1 from the top surface.

[0045] Next, the conveying unit 10 is moved in the length direction of the sheet 1 so that it exits the processing unit 22 and returns to the position it was in before the movement (FIG. 9(b)). Here, the conveying unit 10 is moved horizontally so as to move away from the processing unit 22.

[0046] Next, the gripping section 11 of the conveying section 10 grips the sheet 1, and then the suction section 12 sucks and adsorbs the sheet 1 (FIG. 9(c)). The processing section 22 performs a process of cutting the sheet 1.

[0047] Thereafter, the steps described with reference to FIGS. 8(a) to 9(c) are repeated.

[0048] As described above, according to the sheet processing apparatus 100 of one embodiment, the conveying unit 10 conveys the sheet 1 to the suction stage 21 with the gripping unit 11 gripping the sheet 1 and the suction unit 12 adsorbing the sheet 1, and the processing unit 22 processes the sheet 1 while the suction stage 21 is adsorbing the sheet 1. Therefore, even if the sheet 1 is warped, the processing can be performed with the warp suppressed. That is, even if the sheet 1 is warped, the gripping unit 11 and the suction unit 12 are located close to each other in the conveying unit 10, so that the sheet 1 can be gripped by the gripping unit 11 and the warp can be corrected to some extent before being adsorbed by the suction unit 12. Therefore, the sheet 1 can be stably adsorbed. The conveying unit 10 conveys the sheet 1 to the suction stage 21 with the sheet 1 stretched and with the warp suppressed, and the suction stage 21 adsorbs the conveyed sheet 1 with the warp suppressed. Therefore, the processing unit 22 can process the sheet 1 with the warp suppressed.

[0049] Since the conveying unit 10 is equipped with the suction unit 12, it is also possible to convey the sheet 1 by suction using only the suction unit 12 without using the gripping unit 11. However, if the sheet 1 is warped, if tension is applied to the sheet 1, or if the sheet 1 is thin and easily damaged, it is difficult to convey the sheet by suction alone. According to the sheet processing apparatus 100 of this embodiment, even in such cases, the gripping unit 11 grips the sheet 1, allowing the sheet 1 to be stably conveyed.

[0050] Here, the conveying direction of the sheet 1 is not limited to the horizontal direction. For example, the conveying direction of the sheet 1 may be an oblique direction as shown in Fig. 10(a) or a vertical direction as shown in Fig. 10(b).

[0051] 1, the first flat plate portion 11a is positioned above the sheet 1 and the second flat plate portion 11b is positioned below the sheet 1, but as shown in FIG. 11, the second flat plate portion 11b may be positioned above the sheet 1 and the first flat plate portion 11a may be positioned below the sheet 1. In the configuration shown in FIG. 11, the suction surface 12a of the suction portion 12 is positioned below the sheet 1. The suction stage 21 sucks and adsorbs the sheet 1 from above.

[0052] <Modification> In the sheet processing apparatus 100 according to the embodiment described above, depending on the amount of warping in the sheet 1, the first flat plate portion 11a and the second flat plate portion 11b of the conveying unit 10 may interfere with the sheet 1 when moving in the longitudinal direction of the sheet 1. For example, when the conveying unit 10 moves out of the processing unit 22 and returns to its original position (FIG. 9B), at least one of the first flat plate portion 11a and the second flat plate portion 11b may come into contact with the warped sheet 1. For this reason, the amount of warping in the sheet 1 may be detected, and based on the detected amount of warping, the conveying unit 10 may be moved in a direction perpendicular to the surface of the sheet 1 so as to move away from the sheet 1, and then moved in the longitudinal direction of the sheet 1. In the example shown in FIG. 9B, for example, when the amount of warping in the sheet is large, at least one of the first flat plate portion 11a of the conveying unit 10 is moved further upward and the second flat plate portion 11b is moved further downward, and then the conveying unit 10 is moved in the longitudinal direction of the sheet 1.

[0053] In this case, the sheet processing apparatus 100 may further include a warpage detection sensor for detecting the amount of warpage when warpage occurs in the sheet 1. The warpage detection sensor is, for example, a laser sensor that transmits and receives laser light or an ultrasonic sensor that transmits and receives ultrasonic waves. With such a configuration, even if the amount of warpage occurring in the sheet 1 is large, it is possible to prevent the conveying unit 10 from coming into contact with the sheet 1 when moving in the length direction of the sheet 1.

[0054] The present invention is not limited to the above-described embodiment, and various applications and modifications can be made within the scope of the present invention.

[0055] The sheet processing apparatus in this application is as follows. <1> a conveying section including a gripping section for pinching and gripping a long sheet and a suction section for adsorbing the sheet by suction; a suction stage that adsorbs the sheet by suction; a processing unit that processes the sheet in a state where the sheet is attracted by the suction stage; Equipped with The sheet processing apparatus, wherein the conveying unit conveys the sheet to the suction stage while the gripping unit grips the sheet and the suction unit adsorbs the sheet. <2> The conveying unit is configured to be movable in the length direction of the sheet and in a direction perpendicular to the surface of the sheet. <1> The sheet processing apparatus according to claim 1 . <3> The conveying unit is characterized in that, when conveying the sheet to the suction stage, it moves in a direction perpendicular to the surface of the sheet and then moves in the length direction of the sheet. <2> The sheet processing apparatus according to claim 1 . <4> The conveying unit is characterized in that, when conveying the sheet to the suction stage, it moves in the length direction of the sheet while moving in a direction perpendicular to the surface of the sheet. <2> The sheet processing apparatus according to claim 1 . <5> The suction unit stops suction of the sheet at least after the suction stage starts suction of the sheet. <1> ~ <4> 10. The sheet processing apparatus according to claim 9, wherein <6> The suction unit is characterized in that it attracts the sheet by sucking it from above. <1> ~ <5> 10. The sheet processing apparatus according to claim 9, wherein <7> The processing unit performs at least one of the following processes: cutting the sheet, printing on the sheet, discharging a material onto the sheet, heat treating the sheet, measuring the sheet, inspecting the sheet, laser processing the sheet, assembling the sheet, stacking the sheet, and conveying the sheet. <1> ~ <6> 10. The sheet processing apparatus according to claim 9, wherein <8> The suction portion is located forward of the gripping portion in the sheet conveying direction. <1> ~ <7> 10. The sheet processing apparatus according to claim 9, wherein <9> The gripping portion is located forward of the suction portion in the sheet conveying direction. <1> ~ <7> 10. The sheet processing apparatus according to claim 9, wherein <10> The suction portion is arranged in line with the gripping portion in the width direction of the sheet. <1> ~ <7> 10. The sheet processing apparatus according to claim 9, wherein <11> The conveying section is characterized in that two conveying sections are provided side by side in the width direction of the sheet. <1> ~ <10> 10. The sheet processing apparatus according to claim 9, wherein <12> The gripping portion is characterized in that an elastic body is provided at the portion that comes into contact with the sheet when gripping the sheet. <1> ~ <11> 10. The sheet processing apparatus according to claim 9, wherein <13> When the conveying unit conveys the sheet to the suction stage, tension is applied to the sheet in the longitudinal direction. <1> ~ <12> 10. The sheet processing apparatus according to claim 9, wherein <14> The sheet is characterized in that warping occurs in at least one of the length direction and width direction of the sheet. <1> ~ <13> 10. The sheet processing apparatus according to claim 9, wherein [Explanation of symbols]

[0056] 1 sheet 2 Unwinding roller 10 Conveying section 11 Gripping part 11a First flat plate portion 11b Second flat plate portion 12 Suction part 12a Suction surface of suction part 12b Suction hole 21 Suction stage 22 Processing section 30 Receiving stand 40 Tension control roller 100 Sheet processing device

Claims

1. a conveying unit including a gripping unit that pinches and grips a long sheet, and a suction unit that sucks the sheet by suction; a suction stage that adsorbs the sheet by suction; a processing unit that processes the sheet in a state where the sheet is attracted by the suction stage; Equipped with the suction portion is provided integrally with at least a part of the grip portion, The sheet processing apparatus, wherein the conveying unit conveys the sheet to the suction stage while the gripping unit grips the sheet and the suction unit adsorbs the sheet.

2. A conveying unit including a gripping unit that clamps and grips a long sheet, and a suction unit that adsorbs the sheet by suction; a suction stage that adsorbs the sheet by suction; a processing unit that processes the sheet in a state where the sheet is attracted by the suction stage; Equipped with the gripping portion is located forward of the suction portion in the sheet conveying direction, The sheet processing apparatus, wherein the conveying unit conveys the sheet to the suction stage while the gripping unit grips the sheet and the suction unit adsorbs the sheet.

3. A conveying unit including a gripping unit that clamps and grips a long sheet, and a suction unit that adsorbs the sheet by suction; a suction stage that adsorbs the sheet by suction; a processing unit that processes the sheet in a state where the sheet is attracted by the suction stage; Equipped with the suction portion is arranged next to the gripping portion in the width direction of the sheet, The sheet processing apparatus, wherein the conveying unit conveys the sheet to the suction stage while the gripping unit grips the sheet and the suction unit adsorbs the sheet.

4. 4. The sheet processing apparatus according to claim 1, wherein the transport unit is configured to be movable in the length direction of the sheet and in a direction perpendicular to the surface of the sheet.

5. The sheet processing apparatus according to claim 4 , wherein the transport unit moves in a direction perpendicular to the surface of the sheet and then moves in the length direction of the sheet when transporting the sheet to the suction stage.

6. The sheet processing apparatus according to claim 4 , wherein the transport unit moves in the length direction of the sheet while moving in the direction perpendicular to the surface of the sheet when transporting the sheet to the suction stage.

7. 4. The sheet processing apparatus according to claim 1, wherein when the conveying unit conveys the sheet to the suction stage, the suction unit releases suction of the sheet at least after the suction stage starts suctioning the sheet.

8. 4. The sheet processing apparatus according to claim 1, wherein the suction unit sucks the sheet from above to adsorb it.

9. 4. The sheet processing device according to claim 1, wherein the processing unit performs at least one of the following processes: cutting the sheet, printing on the sheet, ejecting a material onto the sheet, heat treating the sheet, measuring the sheet, inspecting the sheet, laser processing the sheet, assembling the sheet, stacking the sheet, and transporting the sheet.

10. 4. The sheet processing apparatus according to claim 1, wherein the suction portion is located forward of the gripping portion in the sheet conveying direction.

11. 4. The sheet processing apparatus according to claim 1, wherein the transport unit is provided in two units and arranged side by side in the width direction of the sheet.

12. 4. The sheet processing apparatus according to claim 1, wherein an elastic body is provided at a portion of the gripping portion that comes into contact with the sheet when gripping the sheet.

13. 4. The sheet processing apparatus according to claim 1, wherein tension is applied to the sheet in a longitudinal direction when the conveying section conveys the sheet to the suction stage.

14. 4. The sheet processing apparatus according to claim 1, wherein the sheet is warped in at least one of the length direction and the width direction of the sheet.

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