Sheet bending device

Abstract

The utility model provides a bending processing device for a sheet. The bending processing device can bend any one of the surface and the back of the sheet. A sheet bending device (100) is provided with: a surface bending member (10) that is positioned on the surface (1a) side of a sheet (1) and that bends the sheet (1) by coming into contact with the surface (1a) side of the sheet (1); and a back surface bending member (20) that is positioned on the back surface (1b) side of the sheet (1) and that bends the sheet (1) by coming into contact with the back surface (1b) side of the sheet (1).

Description

Technical Field

[0001] The utility model relates to a device for bending a sheet material. Background Art

[0002] There is known an apparatus for bending a sheet material by coming into contact with the sheet material.

[0003] Patent Document 1 discloses a warp correction device that corrects warping of a carrier tape by causing a correction roller to come into contact with the belts from one direction while the carrier tape is being conveyed between two belt conveyor belts.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2006-297689

[0005] However, in the warp correction device described in Patent Document 1, since the correction roller is configured to contact the belt from one direction, the film carrier can only be bent in the same direction. Therefore, when the film carrier is warped in the opposite direction to the film carrier to be warped, it is necessary to change the film carrier to be held between the two belts by turning the front and back sides upside down. Utility Model Content

[0006] The utility model is proposed to solve the above technical problems, and its purpose is to provide a sheet bending device capable of bending any one of the front and back surfaces of the sheet.

[0007] The sheet material bending processing device of the utility model is characterized in that it has:

[0008] a surface bending processing member, located on the surface side of the sheet material, and abutting against the surface side of the sheet material to perform bending processing on the sheet material; and

[0009] The back surface bending member is located on the back surface side of the sheet material and comes into contact with the back surface side of the sheet material to perform bending of the sheet material.

[0010] According to the sheet bending processing device of the utility model, by having a surface bending processing component that abuts against the surface side of the sheet to perform bending processing on the sheet, and a back side bending processing component that abuts against the back side of the sheet to perform bending processing on the sheet, it is possible to perform bending processing on either the surface or the back side of the sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a side view schematically showing the structure of the sheet bending apparatus in the first embodiment.

[0012] Figure 2(a) is a side view of an example of a sheet in which the sheet is warped in a manner that expands toward the surface side. Figure 2 (b) is a side view showing an example of a sheet in a state where the sheet is warped so as to expand toward the back side.

[0013] Figure 3 is a side view schematically showing a sheet bending apparatus in a first embodiment, Figure 3 (a) shows the state where the surface bending processing member is in contact with the surface side of the sheet. Figure 3 (b) shows a state where the back surface bending member is in contact with the back surface side of the sheet.

[0014] Figure 4 It is a side view schematically showing the structure of the sheet bending apparatus in the second embodiment.

[0015] Figure 5 is a side view schematically showing a sheet bending apparatus in a second embodiment, Figure 5 (a) shows the state where the surface bending processing member is in contact with the surface side of the sheet. Figure 5 (b) shows a state where the back surface bending member is in contact with the back surface side of the sheet.

[0016] Figure 6 (a) is a diagram for explaining the positional relationship between the interval between the first support roller and the surface bending member as the bending roller and the size of the sheet when the interval between the two rollers is shorter than the size of the sheet in the traveling direction of the belt, Figure 6 (b) is a diagram for explaining the positional relationship between the interval between the first support roller and the surface bending member as the bending roller and the size of the sheet when the interval between the two rollers is longer than the size of the sheet in the belt running direction.

[0017] Figure 7 It is a side view schematically showing the structure of the sheet bending apparatus in the third embodiment.

[0018] Figure 8 is a side view schematically showing a sheet bending apparatus in a third embodiment, Figure 8 (a) shows a state where the second surface bending member is in contact with the surface side of the sheet. Figure 8 (b) shows a state where the first surface bending member is in contact with the surface side of the sheet.

[0019] Fig. 9 is a side view schematically showing a sheet bending apparatus in a third embodiment, Fig. 9 (a) shows the state where the second back side bending processing member is in contact with the back side of the sheet. Fig. 9 (b) shows a state where the first back surface bending member is in contact with the back surface side of the sheet.

[0020] Fig.10 It is a side view schematically showing the structure of a sheet material bending apparatus in a fourth embodiment.

[0021] Fig.11 It is a side view schematically showing the structure of a sheet bending apparatus including a front surface bending member and a back surface bending member having different shapes.

[0022] Description of Reference Numerals

[0023] 1: sheet; 1a: surface of sheet; 1b: back side of sheet; 2: unwinding roller; 3: first supporting roller; 4: second supporting roller; 10: surface bending processing part; 11: first surface bending processing part; 12: second surface bending processing part; 20: back side bending processing part; 21: first back side bending processing part; 22: second back side bending processing part; 30: switching part; 40: surface side belt; 50: back side belt; 60: first selection part; 70: second selection part; 100, 100A, 100B, 100C: bending processing device for sheet. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are shown below, and features of the present invention are described in detail.

[0025] <First embodiment>

[0026] Figure 1 1 is a side view schematically showing the structure of the sheet bending device 100 in the first embodiment. The sheet bending device 100 in the first embodiment includes: a surface bending device 10 located on the surface 1a side of the sheet 1 and abutting against the surface 1a side of the sheet 1 to perform bending of the sheet 1; and a back side bending device 20 located on the back side 1b side of the sheet 1 and abutting against the back side 1b side of the sheet 1 to perform bending of the sheet 1. The sheet bending device 100 in this embodiment preferably further includes a switching unit 30.

[0027] In this embodiment, the sheet material 1 to be bent has a long strip shape. Figure 1As shown, the sheet 1 is unwound from the unwinding roller 2 and supplied to a position where a sheet bending device 100 is provided. The width of the sheet 1 is, for example, greater than 50 mm and less than 200 mm, and the thickness is, for example, greater than 0.05 mm and less than 0.1 mm. Here, the outer surface of the sheet 1 unwound from the unwinding roller 2 is referred to as the front surface, and the inner surface is referred to as the back surface. In addition, the outer surface of the sheet 1 unwound from the unwinding roller 2 may be defined as the back surface, and the inner surface may be defined as the front surface.

[0028] like Figure 1 As shown, in the conveying direction of the sheet 1, a first supporting roller 3 for supporting the sheet 1 may be provided in front of the sheet bending device 100, and a second supporting roller 4 for supporting the sheet 1 may be provided behind the sheet bending device 100. Figure 1 In the example shown, a pair of first support rollers 3 are provided so as to sandwich the sheet 1 , and a pair of second support rollers 4 are provided so as to sandwich the sheet 1 .

[0029] In the following description, the first support roller 3 located on the surface 1a side of the sheet 1 is sometimes referred to as the first support roller 3 on the surface side, and the first support roller 3 located on the back side 1b side of the sheet 1 is sometimes referred to as the first support roller 3 on the back side. In addition, the second support roller 4 located on the surface 1a side of the sheet 1 is sometimes referred to as the second support roller 4 on the surface side, and the second support roller 4 located on the back side 1b side of the sheet 1 is sometimes referred to as the second support roller 4 on the back side.

[0030] The sheet 1 is made of any material, for example, at least one of metal, resin and ceramic. The sheet 1 may be a sheet in which a plurality of materials with different shrinkage rates are arranged in the second direction, or a sheet that continues to maintain a certain deformation when the external force is released. For example, the sheet 1 may be any one of a ceramic raw sheet, a sheet consisting of a two-layer structure of ceramic and resin, a sheet consisting of a two-layer structure of metal foil and resin, a sheet consisting of a two-layer structure of metal foil and ceramic, a sheet consisting of a two-layer structure of metal foil and an electrode active material layer, and a sheet that has been dried after printing.

[0031] In the sheet 1 having a structure in which a plurality of materials having different shrinkage rates are arranged in the second direction as described above, warping may occur. Figure 2 (a) Figure 2 (b) is a perspective view schematically showing the shape of the warped sheet 1 .

[0032] Figure 2 (a) is a side view showing an example of the sheet material 1 in a state where the sheet material 1 is warped so as to expand toward the surface 1 a side. Figure 2 (b) is a side view showing an example of the sheet material 1 in a state where the sheet material 1 is warped so as to expand toward the back surface 1 b side.

[0033] The sheet bending apparatus 100 of the first embodiment performs a bending process on a warped sheet 1 to correct the warping. Figure 2 As shown in (a), the sheet 1 is warped in a manner that expands toward the surface 1a side, or as Figure 2 As shown in (b), the sheet 1 is warped in a manner that expands toward the back surface 1b of the sheet 1. The shape of the warp generated on the sheet 1 is not limited to Figure 2 (a) Figure 2 The shape shown in (b).

[0034] In this embodiment, the front bending member 10 and the back bending member 20 are bending rollers that come into contact with the sheet 1 to perform bending. Figure 1 As shown, the surface shape when viewed from the extending direction of the central axis of the bending roller is circular.

[0035] In order to perform bending processing to correct the warpage by contacting with the sheet 1, the diameter of the surface bending processing member 10 as a bending processing roller is preferably smaller than the diameters of the first support roller 3 and the second support roller 4. Similarly, the diameter of the back side bending processing member 20 as a bending processing roller is preferably smaller than the diameters of the first support roller 3 and the second support roller 4.

[0036] In the present embodiment, the front surface bending member 10 and the back surface bending member 20 are configured to be movable integrally. Alternatively, the front surface bending member 10 and the back surface bending member 20 may be configured to be movable independently of each other.

[0037] Hereinafter, a method of performing bending to correct the warping on the warped sheet 1 by the sheet bending apparatus 100 according to the first embodiment will be described.

[0038] When the sheet 1 is warped so as to expand toward the surface 1a side ( Figure 2 (a)), such as Figure 3 As shown in (a) of FIG. 1 , the surface bending member 10 comes into contact with the surface 1a of the sheet 1 to perform bending to correct the warping. In the present embodiment, the surface bending member 10 comes into direct contact with the surface 1a of the sheet 1 .

[0039] exist Figure 3In the example shown in (a), the surface bending processing unit 10 and the back side bending processing unit 20 are located below the first support roller 3 and the second support roller 4. As a result, the sheet 1 rolled out in the horizontal direction from the unwinding roller 2 is conveyed downward at the position where the first support roller 3 on the back side is provided. Then, the conveying direction of the sheet 1 is changed upward at the position where the surface bending processing unit 10 is provided, and then changed again to the horizontal direction at the position where the second support roller 4 on the back side is provided.

[0040] The surface bending member 10 contacts the surface 1a of the sheet 1 to correct the warping of the sheet 1 that expands toward the surface 1a. That is, the sheet 1 after being bent by the surface bending member 10 has no warping or has a smaller warping amount than before the bending.

[0041] Furthermore, since the surface bending member 10 is a bending roller, the sheet 1 is conveyed along the surface of the bending roller, and thus the warping can be corrected more effectively.

[0042] When the sheet 1 is warped so as to expand toward the back surface 1b side ( Figure 2 (b)), such as Figure 3 As shown in (b) of FIG. 1 , the back surface bending member 20 comes into contact with the back surface 1b of the sheet 1 to perform bending to correct the warping. In the present embodiment, the back surface bending member 20 comes into direct contact with the back surface 1b of the sheet 1.

[0043] exist Figure 3 In the example shown in (b), the front bending processing unit 10 and the back bending processing unit 20 are located above the first support roller 3 and the second support roller 4. As a result, the sheet 1 rolled out in the horizontal direction from the unwinding roller 2 is conveyed upward at the position where the first support roller 3 on the front side is provided. Then, the conveying direction of the sheet 1 changes downward at the position where the back bending processing unit 20 is provided, and then changes again to the horizontal direction at the position where the second support roller 4 on the front side is provided.

[0044] The back bending member 20 contacts the back side 1b of the sheet 1 to correct the warping of the sheet 1 that expands toward the back side 1b. That is, the sheet 1 after being bent by the back bending member 20 has no warping or has a smaller warping amount than before the bending.

[0045] Furthermore, since the back surface bending member 20 is a bending roller, the sheet 1 is conveyed along the surface of the bending roller, and thus the warping can be corrected more effectively.

[0046] The switching unit 30 switches the first state in which the front surface bending member 10 contacts the front surface 1a of the sheet 1 and the back surface bending member 20 does not contact the back surface 1b of the sheet 1. Figure 3(a)), and a second state in which the surface bending processing component 10 is not in contact with the surface 1a side of the sheet 1 and the back side bending processing component 20 is in contact with the back side 1b side of the sheet 1 ( Figure 3 (b)). Specifically, the switching unit 30 switches the first state and the second state by moving the surface bending processing unit 10 and the back bending processing unit 20. By switching the first state and the second state by the switching unit 30, a bending process for appropriately correcting the warping corresponding to the warping direction of the sheet 1 can be performed. That is, the sheet bending processing device 100 includes the switching unit 30, thereby eliminating the need to reverse the front and back directions of the conveyed sheet 1 according to the warping direction of the sheet 1.

[0047] <Second embodiment>

[0048] Figure 4 100A is a side view schematically showing the structure of a sheet bending apparatus 100A in the second embodiment. The sheet bending apparatus 100A in the second embodiment has the structure of the sheet bending apparatus 100 in the first embodiment, and further includes a front side belt 40 and a back side belt 50 .

[0049] The front side belt 40 contacts the surface of the sheet 1 at least at a position where the sheet 1 is bent by one of the front bending processing component 10 and the back bending processing component 20. The back side belt 50 contacts the back side of the sheet 1 at a position where the sheet 1 is bent by at least one of the front bending processing component 10 and the back bending processing component 20.

[0050] The front side belt 40 and the back side belt 50 are driven by, for example, a driving roller. For example, the front side bending processing member 10 as a bending processing roller can function as a driving roller, and the back side bending processing member 20 as a bending processing roller can function as a driving roller. In addition, the first support roller 3 and the second support roller 4 can also function as driving rollers, and other rollers can also function as driving rollers.

[0051] In the present embodiment, the sheet 1 has a short strip shape, and is sandwiched and conveyed by the front side belt 40 and the back side belt 50 at a position where the sheet 1 is bent by at least one of the front bending processing unit 10 and the back side bending processing unit 20. The short strip shape is an elongated shape, and unlike a sheet having a long strip shape, it is a shape that cannot be conveyed along the first support roller 3 and the second support roller 4 by itself. The short strip sheet 1 can be obtained, for example, by cutting a long strip sheet.

[0052] exist Figure 4In the illustrated structural example, the short strip-shaped sheet 1 conveyed on the back side belt 50 is sandwiched between the front side belt 40 and the back side belt 50 near the position where the first support roller 3 is provided. In addition, as described later, the sheet 1 is bent by the front side bending processing unit 10 or the back side bending processing unit 20 while being sandwiched between the front side belt 40 and the back side belt 50. Then, near the position where the second support roller 4 is provided, the front side belt 40 is separated from the sheet 1, and the sheet 1 is conveyed on the back side belt 50 again.

[0053] Hereinafter, a method of performing bending to correct the warping on a warped sheet 1 by the sheet bending apparatus 100A according to the second embodiment will be described.

[0054] When the sheet 1 is warped in a manner that expands toward the surface 1a, as shown in FIG. Figure 5 As shown in (a) of FIG. 1 , the surface bending processing member 10 contacts the surface 1a side of the sheet 1 to perform a bending process to correct the warping. Figure 5 As shown in (a) of FIG. 1 , the surface bending member 10 is in direct contact with the surface side belt 40 located on the surface 1 a side of the sheet 1 .

[0055] exist Figure 5 In the example shown in (a), the surface bending processing unit 10 and the back side bending processing unit 20 are located below the first support roller 3 and the second support roller 4. As a result, the sheet 1 is conveyed downward at the position where the first support roller 3 on the back side is provided while being sandwiched by the surface side belt 40 and the back side belt 50. Then, the sheet 1 is conveyed along the shape of the surface bending processing unit 10 while being sandwiched by the surface side belt 40 and the back side belt 50, thereby performing bending processing for correcting the warping of the sheet 1.

[0056] When the sheet 1 is warped in a manner that expands toward the back surface 1b, as shown in FIG. Figure 5 As shown in (b), the back bending processing member 20 abuts against the back side 1b of the sheet 1 to perform a bending process to correct the warping. Figure 5 As shown in FIG. 2 ( b ), the back surface bending member 20 is in direct contact with the back surface side belt 50 located on the back surface 1 b side of the sheet 1 .

[0057] exist Figure 5In the example shown in (b), the front bending processing unit 10 and the back bending processing unit 20 are located above the first support roller 3 and the second support roller 4. As a result, the sheet 1 is conveyed upward at the position where the first support roller 3 on the front side is provided while being sandwiched by the front side belt 40 and the back side belt 50. Then, the sheet 1 is conveyed along the shape of the back bending processing unit 20 while being sandwiched by the front side belt 40 and the back side belt 50, thereby performing bending processing for correcting the warping of the sheet 1.

[0058] In this embodiment, the switching unit 30 also switches the first state in which the front surface bending member 10 is in contact with the front surface 1a side of the sheet 1 and the back surface bending member 20 is not in contact with the back surface 1b side of the sheet 1 ( Figure 5 (a)), and a second state in which the front surface bending processing member 10 is not in contact with the front surface 1a side of the sheet 1 and the back surface bending processing member 20 is in contact with the back surface 1b side of the sheet 1 ( Figure 5 (b)). In the present embodiment, the state in which the back side bending processing component 20 does not abut against the back side 1b side of the sheet 1 in the first state refers to the state in which the back side bending processing component 20 does not abut against the back side belt 50 located on the back side 1b side of the sheet 1. In addition, the state in which the surface bending processing component 10 does not abut against the surface 1a side of the sheet 1 in the second state refers to the state in which the surface bending processing component 10 does not abut against the surface side belt 40 located on the surface 1a side of the sheet 1. Here, the switching unit 30 also switches the above-mentioned first state and second state by moving the surface bending processing component 10 and the back side bending processing component 20.

[0059] It is preferable that tension is always applied to the front side belt 40 and the back side belt 50 in the traveling direction. By always applying tension to the front side belt 40 and the back side belt 50, it is possible to suppress slack in the front side belt 40 and the back side belt 50 when the first state and the second state are switched by the switching unit 30. Applying tension to the front side belt 40 and the back side belt 50 can be performed, for example, by a known method.

[0060] Here, in the section where the sheet 1 is conveyed while being sandwiched between the surface side belt 40 and the back side belt 50, the interval between two rollers that are in contact with at least one of the surface side belt 40 and the back side belt 50 and are arranged at adjacent positions is preferably shorter than the dimension of the sheet 1 in the traveling direction of the belt.

[0061] exist Figure 5In the state shown in (a), in the section where the sheet 1 is sandwiched between the front side belt 40 and the back side belt 50 and is transported, two rollers that are in contact with at least one of the front side belt 40 and the back side belt 50 and are arranged in adjacent positions are the first support roller 3 and the bending roller (surface bending component 10) on the back side, and the second support roller 4 and the bending roller (surface bending component 10) on the back side. Figure 5 In the state shown in (b), in the section where the sheet 1 is sandwiched between the surface side belt 40 and the back side belt 50 and is conveyed, two rollers that are in contact with at least one of the surface side belt 40 and the back side belt 50 and are arranged in adjacent positions are the first supporting roller 3 and the bending roller (back side bending processing component 20) on the surface side, and the second supporting roller 4 and the bending roller (back side bending processing component 20) on the surface side.

[0062] Figure 6 (a) is a diagram for explaining the positional relationship between the interval L1 between the two rollers and the size of the sheet 1 when the interval between the first support roller 3 and the surface bending processing member 10 as the bending processing roller is shorter than the size of the sheet 1 in the belt running direction. The interval L1 between the two rollers refers to the distance between the centers of the two rollers.

[0063] like Figure 6 As shown in (a), in the section where the sheet 1 is sandwiched between the front side belt 40 and the back side belt 50 and is transported, the sheet 1 abuts against at least one of the front side belt 40 and the back side belt 50, and the interval L1 between the two rollers arranged at adjacent positions is shorter than the dimension of the sheet 1 in the belt travel direction, thereby preventing the sheet 1 from slipping between the front side belt 40 and the back side belt 50 even when the sheet 1 is transported in the vertical direction. That is, the sheet 1 is pressed against at least one of the two rollers while being sandwiched by the front side belt 40 and the back side belt 50, so that slipping can be prevented.

[0064] Figure 6 (b) is a diagram for explaining the positional relationship between the interval L1 between the first support roller 3 and the surface bending member 10 as the bending roller and the dimension L2 of the sheet 1 when the interval between the two rollers is longer than the dimension L2 of the sheet 1 in the belt running direction. Figure 6 In the case of the structure shown in (b), when the sheet 1 is conveyed in the vertical direction, the sheet 1 is clamped only by the front side belt 40 and the back side belt 50, so there is a state where it is not pressed by any of the two rollers. In this state, the sheet 1 may slide downward.

[0065] Although the description using the drawings is omitted, the same applies to the case where the two rollers are the second support roller 4 and the surface bending member 10 as a bending roller, the case where the first support roller 3 and the back side bending member 20 as a bending roller, and the case where the second support roller 4 and the back side bending member 20 as a bending roller.

[0066] Based on the above reasons, in the section where the sheet 1 is conveyed while being sandwiched between the surface side belt 40 and the back side belt 50, the interval between two rollers that are in contact with at least one of the surface side belt 40 and the back side belt 50 and are arranged at adjacent positions is preferably shorter than the dimension of the sheet 1 in the direction of belt travel.

[0067] According to the sheet bending processing device 100A in the second embodiment, since it is provided with the front side belt 40 and the back side belt 50, it is also possible to perform bending processing on a short strip of sheet 1. That is, by clamping the short strip of sheet 1 between the front side belt 40 and the back side belt 50, the front bending processing component 10 is brought into contact with the front surface 1a side of the sheet 1, or the back bending processing component 20 is brought into contact with the back surface 1b side of the sheet 1, the sheet 1 can be bent.

[0068] <Third Embodiment>

[0069] In the sheet bending apparatus 100 of the first embodiment and the sheet bending apparatus 100A of the second embodiment, the front surface bending member 10 and the back surface bending member 20 are each of one type. Therefore, the amount of bending performed on the sheet 1 is fixed to an amount corresponding to the surface shapes of the front surface bending member 10 and the back surface bending member 20.

[0070] On the other hand, in the sheet bending apparatus 100B according to the third embodiment, the front surface bending member 10 and the back surface bending member 20 include a plurality of members having different shapes, and the amount of bending can be adjusted.

[0071] Figure 7 1 is a side view schematically showing the structure of the sheet bending processing device 100B in the third embodiment. Here, the sheet 1 has a short strip shape, similarly to the sheet bending processing device 100A in the second embodiment, and the sheet bending processing device 100B is described as a device having a front side belt 40 and a back side belt 50.

[0072] In the present embodiment, the surface bending processing component 10 includes two types of first surface bending processing components 11 and second surface bending processing components 12, the shapes of the portions abutting against the surface 1a side of the sheet 1 are different. In addition, the back surface bending processing components 20 include two types of first back surface bending processing components 21 and second back surface bending processing components 22, the shapes of the portions abutting against the back surface 1b side of the sheet 1 are different. It should be noted that the mode of "the shape of the portion abutting against the surface 1a side of the sheet 1 is different" includes not only the mode of different shapes themselves, but also the mode of similar shapes but different sizes.

[0073] The same applies to the aspect that “the shape of the portion in contact with the back surface 1 b side of the sheet 1 is different”.

[0074] In addition, the types of the surface bending processing parts 10 having different shapes of the part abutting against the surface 1a side of the sheet 1 are not limited to two, and can be three or more. Similarly, the types of the back bending processing parts 20 having different shapes of the part abutting against the back side 1b of the sheet 1 are not limited to two, and can be three or more.

[0075] exist Figure 7 In the illustrated structural example, as the surface bending processing component 10, two first surface bending processing components 11 and two second surface bending processing components 12 are included. In addition, as the back surface bending processing component 20, two first back surface bending processing components 21 and two second back surface bending processing components 22 are included. In addition, the number of the first surface bending processing component 11 and the second surface bending processing component 12 can be one each, and the number of the first back surface bending processing component 21 and the second back surface bending processing component 22 can be one each.

[0076] In the present embodiment, the first surface bending processing member 11, the second surface bending processing member 12, the first back surface bending processing member 21, and the second back surface bending processing member 22 are also bending processing rollers that perform bending processing by contacting with the sheet 1. The diameter of the second surface bending processing member 12 is smaller than the diameter of the first surface bending processing member 11. In addition, the diameter of the second back surface bending processing member 22 is smaller than the diameter of the first back surface bending processing member 21.

[0077] The sheet bending processing device 100B in the third embodiment has a structure relative to the sheet bending processing device 100A in the second embodiment, and further includes a first selection portion 60 selected from multiple types as a surface bending processing component 10 abutting against the surface 1a side of the sheet 1, and further includes a second selection portion 70 selected from multiple types as a back side bending processing component 20 abutting against the back side 1b side of the sheet 1.

[0078] exist Figure 7In the illustrated structural example, the first selection unit 60 is a rotating unit. Two first surface bending processing units 11 and two second surface bending processing units 12 are mounted on the first selection unit 60, and as described later, the first selection unit 60 is rotated to select the type of surface bending processing unit 10 that contacts the surface 1a of the sheet 1.

[0079] exist Figure 7 In the illustrated structural example, the second selection unit 70 is a rotating unit. Two first back side bending processing units 21 and two second back side bending processing units 22 are mounted on the second selection unit 70, and as described later, the second selection unit 70 is rotated to select the type of back side bending processing unit 20 that contacts the back side 1b of the sheet 1.

[0080] In addition, the structure of the first selection part 60 that selects one of multiple types as the surface bending processing component 10 that contacts the surface 1a of the sheet 1 is not limited to the above-mentioned structure. In addition, the structure of the second selection part 70 that selects one of multiple types as the back side bending processing component 20 that contacts the back side 1b of the sheet 1 is not limited to the above-mentioned structure.

[0081] exist Figure 7 In the illustrated configuration example, the first selection unit 60 selects one of the first surface bending member 11 and the second surface bending member 12 as the surface bending member 10 that abuts against the surface 1a side of the sheet 1, according to the bending amount when the sheet 1 is bent. Specifically, when the bending amount is larger than that when the first surface bending member 11 is used, the first selection unit 60 selects the second surface bending member 12 ( Figure 8 (a)). Figure 8 In the example shown in (a) , the two second surface bending members 12 are in contact with the surface 1 a side of the sheet 1 , more specifically, the surface side belt 40 .

[0082] On the contrary, when the bending is performed with a smaller bending amount than when the second surface bending member 12 is used, the first selection unit 60 selects the first surface bending member 11 ( Figure 8 (b)). Figure 8 In the example shown in (b) , the two first surface bending members 11 are in contact with the surface 1 a side of the sheet 1 , more specifically, the surface side belt 40 .

[0083] The first selection unit 60 selects one of the first surface bending member 11 and the second surface bending member 12 as the surface bending member 10 that is to come into contact with the surface 1 a side of the sheet 1 by rotating.

[0084] In addition, Figure 7 In the illustrated configuration example, the second selection unit 70 selects one of the first back side bending processing member 21 and the second back side bending processing member 22 as the back side bending processing member 20 that contacts the back side 1b of the sheet 1, according to the bending processing amount when the sheet 1 is bent. Specifically, when the bending processing is performed with a bending processing amount greater than that when the first back side bending processing member 21 is used, the second selection unit 70 selects the second back side bending processing member 22 ( Fig. 9 (a)). Fig. 9 In the example shown in (a) of FIG. 1 , the two second back surface bending members 22 are in contact with the back surface 1 b side of the sheet 1 , more specifically, with the back surface side belt 50 .

[0085] On the contrary, when the bending is performed with a smaller bending amount than when the second back side bending member 22 is used, the second selection unit 70 selects the first back side bending member 21 ( Fig. 9 (b)). Fig. 9 In the example shown in (b) , the two first back surface bending members 21 are in contact with the back surface 1 b side of the sheet 1 , more specifically, with the back surface side belt 50 .

[0086] The second selection unit 70 selects one of the first back surface bending member 21 and the second back surface bending member 22 as the back surface bending member 20 that comes into contact with the back surface 1 b side of the sheet 1 by rotating.

[0087] According to the sheet bending apparatus 100B of the third embodiment, the bending amount when bending the front surface 1 a of the sheet 1 and the bending amount when bending the back surface 1 b of the sheet 1 can be changed.

[0088] In addition, although the sheet material bending apparatus 100A in the second embodiment is described here as a basis, the sheet material bending apparatus 100 in the first embodiment can also be used as a basis to form the same structure.

[0089] <Fourth embodiment>

[0090] The sheet bending apparatus 100C according to the fourth embodiment includes a state detection unit that detects the state of the sheet 1 .

[0091] Fig.10 It is a side view schematically showing the structure of a sheet material bending apparatus 100C in the fourth embodiment. Fig.10The sheet bending device 100C shown is configured to further include a state detection unit 80 (80a, 80b) for detecting the state of the sheet 1, compared to the structure of the sheet bending device 100B in the third embodiment. Alternatively, the sheet bending device 100C may be configured to further include a state detection unit 80 for detecting the state of the sheet 1, compared to the structure of the sheet bending device 100 in the first embodiment or the sheet bending device 100A in the second embodiment.

[0092] The state detection unit 80 detects the state of the sheet 1, for example, the direction and amount of warping of the sheet 1. The state detection unit 80 is, for example, a laser sensor that transmits laser light to the sheet 1 and receives reflected light.

[0093] The state detection unit 80 is provided at least at one of a position before the sheet 1 is bent and a position after the sheet 1 is bent. Fig.10 In the figure, as the state detection unit 80, a configuration example is shown in which a first state detection unit 80a is provided at a position before the sheet 1 is subjected to the bending process, and a second state detection unit 80b is provided at a position after the sheet 1 is subjected to the bending process. The first state detection unit 80a, for example, detects the direction in which the sheet 1 is warped and the amount of the warp. The second state detection unit 80b, for example, detects the amount of the warp of the sheet 1. That is, the second state detection unit 80b detects the amount of the warp when the warp remains on the sheet 1 after the bending process. In addition, the state detection unit 80 may be provided only at a position before the sheet 1 is subjected to the bending process, or the state detection unit 80 may be provided only at a position after the sheet 1 is subjected to the bending process.

[0094] The switching unit 30 switches between a first state in which the surface bending processing component 10 abuts against the surface 1a side of the sheet 1 and the back side bending processing component 20 does not abut against the back side 1b side of the sheet 1, and a second state in which the surface bending processing component 10 does not abut against the surface 1a side of the sheet 1 and the back side bending processing component 20 abuts against the back side 1b side of the sheet 1, according to the state of the sheet 1 detected by the state detection unit 80, specifically, according to the direction in which the sheet 1 is warped.

[0095] For example, when the state detection unit 80 detects that the sheet 1 is warped so as to expand toward the surface 1 a , the switching unit 30 brings the surface curving member 10 into contact with the surface 1 a of the sheet 1 to achieve the first state.

[0096] When the surface bending processing member 10 is brought into contact with the surface 1a side of the sheet 1, the first selection unit 60 selects one of the first surface bending processing member 11 and the second surface bending processing member 12 as the surface bending processing member 10 brought into contact with the surface 1a side of the sheet 1, based on the state of the sheet 1 detected by the state detection unit 80, specifically, based on the warpage amount of the sheet 1. Specifically, when the warpage amount of the detected sheet 1 is large, the first selection unit 60 selects the second surface bending processing member 12. On the other hand, when the warpage amount of the detected sheet 1 is small, the first selection unit 60 selects the first surface bending processing member 11.

[0097] When the state detection unit 80 detects that the sheet 1 is warped so as to expand toward the back surface 1 b side, the switching unit 30 brings the back surface bending member 20 into contact with the back surface 1 b side of the sheet 1 .

[0098] When the back side bending processing member 20 is brought into contact with the back side 1b of the sheet 1, the second selection unit 70 selects one of the first back side bending processing member 21 and the second back side bending processing member 22 as the back side bending processing member 20 brought into contact with the back side 1b of the sheet 1, based on the state of the sheet 1 detected by the state detection unit 80, specifically, based on the warpage amount of the sheet 1. Specifically, when the warpage amount of the detected sheet 1 is large, the first selection unit 60 selects the second back side bending processing member 22. On the other hand, when the warpage amount of the detected sheet 1 is small, the second selection unit 70 selects the first back side bending processing member 21.

[0099] As mentioned above, in Fig.10 In the illustrated configuration example, two state detection units are provided as the state detection unit 80, namely, a first state detection unit 80a provided at a position before the bending process of the sheet 1 is performed, and a second state detection unit 80b provided at a position after the bending process of the sheet 1 is performed. For example, based on the state of the sheet 1 detected by the first state detection unit 80a, the switching unit 30, the first selection unit 60, and the second selection unit 70 perform the above-mentioned processing. In addition, when the warpage amount of the sheet 1 greater than 0 is detected by the second state detection unit 80b, the first selection unit 60 or the second selection unit 70 selects the bending roller with a smaller diameter.

[0100] As described above, according to the sheet bending apparatus 100C of the fourth embodiment, by detecting the state of the sheet 1 by the state detection unit 80 , it is possible to perform appropriate bending according to the state of the sheet 1 .

[0101] It should be noted that in the first to third embodiments, the state detection unit 80 is not provided, but the switching unit 30 can switch between the first state and the second state by, for example, knowing in advance the direction in which the warp occurs in the sheet 1 .

[0102] The present invention is not limited to the above-described embodiment, and various applications and modifications can be implemented within the scope of the present invention. In addition, the characteristic structures in each embodiment can be combined appropriately.

[0103] The bending process performed on the sheet 1 by the sheet bending process device of the present invention is not limited to the correction of the warping of the warped sheet 1. For example, the bending process performed on the sheet 1 may be a bending process for bending a non-warped sheet 1, or may be a bending process for further warping a warped sheet 1.

[0104] Alternatively, the sheet material 1 may be subjected to bending processing for changing the sheet material 1 into a desired shape.

[0105] In the second to fourth embodiments, the sheet material 1 is described as having a short shape, but may also have a long shape.

[0106] In the above-mentioned embodiments, the front surface bending member 10 and the back surface bending member 20 are described as bending rollers, but they are not limited to rollers having a circular surface. Fig.11 As shown, the shapes of the surface bending member 10 and the back surface bending member 20 may be the shapes obtained by cutting a roller having a circular surface. The surface shapes of the surface bending member 10 and the back surface bending member 20 may be any shapes according to the bending process.

[0107] The sheet bending apparatus in the present application is as follows.

[0108] <1> A sheet material bending device, characterized in that it comprises:

[0109] a surface bending processing member, located on the surface side of the sheet material, and abutting against the surface side of the sheet material to perform bending processing on the sheet material; and

[0110] The back surface bending member is located on the back surface side of the sheet material and comes into contact with the back surface side of the sheet material to perform bending of the sheet material.

[0111] <2>. The sheet bending device according to <1>, characterized in that:

[0112] It also has a switching part, which switches between a first state and a second state, wherein the first state is a state in which the surface bending processing component is in contact with the surface side of the sheet and the back side bending processing component is not in contact with the back side of the sheet, and the second state is a state in which the surface bending processing component is not in contact with the surface side of the sheet and the back side bending processing component is in contact with the back side of the sheet.

[0113] <3>. The sheet bending device according to <1> or <2>, characterized in that:

[0114] The surface bending processing member includes a plurality of members having different shapes of portions that come into contact with the surface of the sheet.

[0115] The back side bending processing member includes a plurality of members having different shapes of portions that come into contact with the back side of the sheet.

[0116] The bending processing device further comprises:

[0117] a first selection unit for selecting one of a plurality of components as the surface bending component that contacts the surface side of the sheet; and

[0118] The second selection unit selects one of a plurality of members as the back surface bending member that comes into contact with the back surface side of the sheet.

[0119] <4>. The sheet bending device according to any one of <1> to <3>, further comprising:

[0120] A surface side belt in contact with the surface of the sheet at least at a position where the sheet is bent by one of the front surface bending processing member and the back surface bending processing member; and

[0121] A back side belt is in contact with the back surface of the sheet at least at a position where the sheet is bent by one of the front surface bending member and the back surface bending member.

[0122] <5>. The sheet bending device according to <4>, characterized in that:

[0123] The sheet has a short strip shape.

[0124] In the section where the sheet is conveyed while being sandwiched between the surface side belt and the back side belt, the interval between two rollers that are in contact with at least one of the surface side belt and the back side belt and are arranged at adjacent positions is shorter than the dimension of the sheet in the traveling direction of the belt.

[0125] <6>. The sheet bending device according to any one of <1> to <5>, characterized in that:

[0126] The invention further includes a state detection unit which is provided at least one of a position before the sheet is bent and a position after the sheet is bent, and detects a state of the sheet.

[0127] <7>. The sheet bending device according to any one of <1> to <6>, characterized in that:

[0128] The front surface bending member and the back surface bending member are bending rollers, respectively.

Claims

1. A sheet bending device, characterized in that: have: a surface bending processing member, located on the surface side of the sheet material, and abutting against the surface side of the sheet material to perform bending processing on the sheet material; and The back surface bending member is located on the back surface side of the sheet material and comes into contact with the back surface side of the sheet material to perform bending on the sheet material.

2. The sheet material bending device according to claim 1, characterized in that: The bending processing device also includes a switching part, which switches between a first state and a second state, the first state is a state in which the surface bending processing component is in contact with the surface side of the sheet and the back side bending processing component is not in contact with the back side of the sheet, and the second state is a state in which the surface bending processing component is not in contact with the surface side of the sheet and the back side bending processing component is in contact with the back side of the sheet.

3. The sheet material bending device according to claim 1, characterized in that: The surface bending processing member includes a plurality of members having different shapes of portions that come into contact with the surface of the sheet. The back side bending processing member includes a plurality of members having different shapes of portions that come into contact with the back side of the sheet. The bending processing device further comprises: a first selection unit for selecting one of a plurality of components as the surface bending component that contacts the surface side of the sheet; and The second selection unit selects one of a plurality of members as the back surface bending member that comes into contact with the back surface side of the sheet.

4. The sheet material bending device according to claim 1, characterized in that: The bending processing device further comprises: A surface side belt in contact with the surface of the sheet at least at a position where the sheet is bent by one of the surface bending processing member and the back surface bending processing member; as well as A back side belt is in contact with the back surface of the sheet at least at a position where the sheet is bent by one of the front surface bending member and the back surface bending member.

5. The sheet material bending device according to claim 4, characterized in that: The sheet has a short strip shape. In the section where the sheet is conveyed while being sandwiched between the surface side belt and the back side belt, the interval between two rollers that are in contact with at least one of the surface side belt and the back side belt and are arranged at adjacent positions is shorter than the dimension of the sheet in the traveling direction of the belt.

6. The sheet material bending device according to claim 1, characterized in that: The bending device further includes a state detection unit provided at least at one of a position before the sheet is bent and a position after the sheet is bent, and detecting a state of the sheet.

7. The sheet material bending device according to claim 1, characterized in that: The front surface bending member and the back surface bending member are bending rollers, respectively.

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