Conveying device

Abstract

The present application provides a conveying device that can reliably convey a sheet from an upstream side to a downstream side without winding the sheet into a nip of a conveyor. A conveying device (2) of the present application is a conveying device that conveys a sheet (5b) from an upstream side to a downstream side, and includes a first belt conveyor (21) and a second belt conveyor (22) disposed on a downstream side of the first belt conveyor (21). A rotation axis (21c1) of a driving roller (21c) (first roller) that supports a conveying belt (21d) at a downstream end of the first belt conveyor (21) and a rotation axis (22b1) of a guide roller (22b) (second roller) that supports a conveying belt (22c) at an upstream end of the second belt conveyor (22) are disposed on the same axis.

Description

Technical Field

[0001] This invention relates to a sheet conveying device. Background Technology

[0002] Conventionally, a conveying device for transporting paper (sheets) such as banknotes and securities from upstream to downstream is known (see, for example, Patent Document 1). Specifically, this conveying device is configured such that two sets of conveyors, each having a drive pulley, a driven pulley positioned at a predetermined interval from the drive pulley, and an annular conveyor belt mounted on the drive pulley and the driven pulley, are arranged from upstream to downstream. According to such a conveying device, after the paper transported by the upstream conveyor is conveyed from the rear end of the upstream conveyor to the front end of the downstream conveyor, it is further conveyed by the downstream conveyor to the rear end of the downstream conveyor.

[0003] [Existing Technical Documents]

[0004] [Patent Literature]

[0005] Patent Document 1: Japanese Patent Application Publication No. 2014-172672 Summary of the Invention

[0006] [The technical problem the invention aims to solve]

[0007] However, when the conveying device is used to transport soft metal foil (sheets) or similar materials, it needs to prevent the material from being pulled into the gap between the upstream and downstream conveyors without being transferred from the upstream to the downstream side.

[0008] The objective of this invention is to provide a conveying device that can more reliably convey materials from the upstream side to the downstream side without causing the sheets to get caught in the gaps between the conveyors.

[0009] [Technical solutions used to solve technical problems]

[0010] The conveying device of the present invention, which solves the above-mentioned problems, is a conveying device for conveying sheet material from an upstream side to a downstream side. The conveying device includes: a first belt conveyor; and a second belt conveyor disposed on the downstream side of the first belt conveyor. The rotation shaft of the first roller on which the conveyor belt is mounted at the downstream end of the first belt conveyor and the rotation shaft of the second roller on which the conveyor belt is mounted at the upstream end of the second belt conveyor are set on the same shaft.

[0011] [Invention Effects]

[0012] According to the conveying device of the present invention, the sheet material will not be rolled into the joint gap of the conveyor, and the conveying can be carried more reliably from the upstream side to the downstream side. Attached Figure Description

[0013] Figure 1 This is a structural illustration of a sheet cutting device having a conveying device according to an embodiment of the present invention.

[0014] Figure 2 This is a cross-sectional view of a sheet material conveyed by a conveying device according to an embodiment of the present invention.

[0015] Figure 3 This is a perspective view of a conveying device according to an embodiment of the present invention.

[0016] [Explanation of reference numerals in the attached figures]

[0017] 2: Conveying device; 5: Sheet; 5a: Sheet; 5b: Sheet; 7: Dust removal mechanism; 21: First belt conveyor; 21c: Drive roller (first roller); 21c1: Rotating shaft; 21d: Conveyor belt; 22: Second belt conveyor; 22b: Guide roller (second roller); 22b1: Rotating shaft; 22c: Conveyor belt; 23: Third belt conveyor; 23e: Conveyor belt; 24: Fourth belt conveyor; 24c: Conveyor belt; V2: Conveying speed; V3: Conveying speed. Detailed Implementation

[0018] The embodiments of the conveying device used to implement the present invention will be described in detail with appropriate reference to the accompanying drawings. Hereinafter, the present invention will be specifically described using a conveying device applied in a sheet cutting device as an example; however, the present invention is not limited thereto. The present invention can be applied to various devices for conveying thin and flexible single sheets of material.

[0019] Figure 1 This is a structural illustration of the sheet cutting device 10 equipped with the conveying device 2 according to this embodiment. Furthermore, for ease of drawing, Figure 1 The cutting device 10, the conveying device 2 and the sheet 5 are schematically shown. The size, shape and relative position of the components in the cutting device 10 and the conveying device 2, and the size and shape of the sheet 5 are different from the actual size and shape.

[0020] Next, after describing the overall structure of the cutting device 10, the conveying device 2 according to this embodiment will be described. The cutting device 10 cuts a sheet of material continuously conveyed by a predetermined conveying mechanism from an upstream side set to the upper vertical direction to a downstream side set to the lower vertical direction to a predetermined length. Figure 1 As shown, the cutting device 10 is configured to move from the upstream side where the sheet 5 is conveyed to the downstream side, and mainly includes a cutting mechanism 3, a guiding mechanism 4, and a conveying device 2. In addition, although not shown in the figure, the cutting device 10 includes a supply unit, which is located upstream of the cutting mechanism 3 and supplies strips of sheet 5a to the cutting mechanism 3.

[0021] The supply unit is configured to primarily include: a roll section for winding a long strip of sheet 5a; and a feeding mechanism that, while applying a predetermined tension to the sheet 5a, feeds the sheet 5a from the roll section at a conveying speed V1. This feeding mechanism, for example, consists of a pair of clamping rollers. Furthermore, in the following description, without distinguishing between the long strip of sheet 5a and the single sheet 5b cut from it (described later), it will simply be referred to as sheet 5.

[0022] Figure 2 Through the cutting device 10 (refer to) Figure 1 The image shows a cross-sectional view of the sheet 5 after it has been cut. In this embodiment, the sheet 5 is envisioned as a coated current-collecting foil used as an electrode material for a secondary battery. Specifically, the sheet 5 is envisioned as a sheet formed by coating both sides of a metal foil 6a (such as copper or aluminum foil, selected according to polarity) with an active material layer 6b comprising a predetermined active material, conductive agent, adhesive, etc., selected according to polarity. Furthermore, the thickness t of the sheet 5 is envisioned to be 50 μm or more and 200 μm or less, preferably around 100 μm.

[0023] The sheet 5 obtained by cutting by the cutting device 10 can be any thin and flexible sheet, and is not limited to this. Examples include resin films, metal foils, and other thin sheets. However, for the conveying device 2 of this embodiment applied to the cutting device 10, paper is not excluded as the sheet 5.

[0024] Return to Figure 1 The cutting mechanism 3 includes a cutting unit 31 for sheet 5a and a holding unit 32 for sheet 5a. The cutting unit 31 includes a cutting blade 31a as a punch for shearing sheet 5a and a fixing blade 31b as a die.

[0025] In this embodiment, the cutting unit 31 constitutes a flying shear. That is, while the cutting unit 31 follows the sheet 5a being conveyed at a speed V1 at a speed V1, it cuts the sheet 5a into single sheets 5b of a predetermined length. The fixed blade 31b is positioned along the sheet 5a when cutting it. The cutting blade 31a cuts the sheet 5a by moving toward the fixed blade 31b. After cutting the sheet 5a, the fixed blade 31b and the cutting blade 31a are displaced away from the sheet 5a and move upward, thereby returning to the initial position before following the sheet 5a.

[0026] like Figure 1As shown, the holding unit 32 is positioned upstream of the cutting blade 31a. In this embodiment, when the cutting blade 31a cuts the sheet 5a, the holding unit 32 moves relative to the sheet 5a at a speed V1 upstream of the cutting blade 31a. Furthermore, the holding unit 32 clamps and holds the sheet 5a with a predetermined load between itself and the fixed blade 31b. After the sheet 5a is cut, the holding unit 32 displaces away from the sheet 5a and moves upward, thereby returning to its initial position before moving relative to the sheet 5a.

[0027] like Figure 1 As shown, the guide mechanism 4 is located downstream of the cutting mechanism 3. The guide mechanism 4 is configured to have a pair of wall portions 41 that gradually narrow as they move from the inlet 4a of the sheet 5 toward the outlet 4b. The guide mechanism 4 guides the sheet 5 conveyed from the cutting mechanism 3 side toward the conveying device 2 according to this embodiment, which will be described next.

[0028] like Figure 1 As shown, the conveying device 2 includes: a first belt conveyor 21, a second belt conveyor 22, a third belt conveyor 23, and a fourth belt conveyor 24. Additionally, the conveying device 2 includes a dust removal mechanism 7.

[0029] The first belt conveyor 21, from upstream to downstream, includes: three rollers consisting of a first guide roller 21a, a second guide roller 21b, and a drive roller 21c; and an annular conveyor belt 21d mounted on these rollers. Furthermore, the drive roller 21c located at the downstream end of the first belt conveyor 21 is equivalent to the "first roller".

[0030] The second guide roller 21b, located at the center in the vertical direction, is displaced in the direction away from the third belt conveyor 23, consisting of the first guide roller 21a, the second guide roller 21b, and the drive roller 21c. As a result, the conveyor belt 21d is mounted on these rollers in a roughly triangular configuration, with the first guide roller 21a, the second guide roller 21b, and the drive roller 21c as vertices. The first belt conveyor 21, in coordination with the third belt conveyor 23 (described later), changes the conveying direction of the cut sheet 5b, which is fed from the vertical upward direction, to a roughly horizontal direction.

[0031] The second belt conveyor 22 is configured downstream of the first belt conveyor 21 and extends in a generally horizontal direction. The second belt conveyor 22 includes a drive roller 22a disposed at the downstream end and a guide roller 22b disposed at the upstream end (described later). Figure 3 The second belt conveyor 22 consists of two rollers; and an annular conveyor belt 22c mounted on these rollers. Furthermore, a guide roller 22b (see reference 22b) is disposed at the upstream end of the second belt conveyor 22. Figure 3This is equivalent to the "second roller". Regarding the guide roller 22b, which serves as this "second roller" (see...), Figure 3 The relationship between the first roller and the drive roller 21c will be explained in detail later.

[0032] The third belt conveyor 23, from upstream to downstream, includes four rollers: a first guide roller 23a, a second guide roller 23b, a third guide roller 23c, and a drive roller 23d; and an annular conveyor belt 23e mounted on these rollers. Furthermore, the first guide roller 23a of the third belt conveyor 23 and the first guide roller 21a of the first belt conveyor 21 are configured to be approximately the same height in the vertical direction.

[0033] Of the four rollers consisting of the first guide roller 23a, the second guide roller 23b, the third guide roller 23c, and the drive roller 23d, the second guide roller 23b and the third guide roller 23c, located at the center in the vertical direction, are arranged between the first guide roller 21a and the drive roller 21c of the first belt conveyor 21. Thus, the conveyor belt 23e is mounted on these rollers in an isosceles trapezoidal shape with the first guide roller 23a, the second guide roller 23b, the third guide roller 23c, and the drive roller 23d as vertices respectively.

[0034] In addition, the second guide roller 23b and the third guide roller 23c of the third belt conveyor 23 are arranged between the first guide roller 21a and the drive roller 21c of the first belt conveyor 21, so that the conveyor belt 21d and the conveyor belt 23e are in contact with each other between the first belt conveyor 21 and the third belt conveyor 23.

[0035] Furthermore, the first guide rollers 21a and 23a rotate in opposite directions to each other, causing the conveyor belts 21d and 23e to move downwards between the first belt conveyor 21 and the third belt conveyor 23. Specifically, in Figure 1 In the example shown, the first guide roller 21a rotates to the right, and the first guide roller 23a rotates to the left at the same rotational speed as the first guide roller 21a. Thus, the cut single sheet 5b is held between the first belt conveyor 21 and the third belt conveyor 23 while being conveyed downstream at a speed V2. Furthermore, the conveying speed V2 of the sheet 5b conveyed by the first belt conveyor 21 and the third belt conveyor 23 is set to approximately 1% higher than the conveying speed V1 of the long sheet 5a, but is not limited to this.

[0036] The fourth belt conveyor 24 is arranged above the second belt conveyor 22 and along the second belt conveyor 22. The fourth belt conveyor 24 includes: two rollers consisting of a drive roller 24a disposed at the downstream end and a guide roller 24b disposed at the upstream end; and an annular conveyor belt 24c supported on these rollers. Furthermore, in the schematic diagram... Figure 1 In this context, conveyor belt 24c is shown as being spaced apart from conveyor belt 22c of the second belt conveyor 22, but in reality, conveyor belt 24c is in contact with conveyor belt 22c.

[0037] Furthermore, the fourth belt conveyor 24 is positioned downstream of the third belt conveyor 23 at a predetermined interval. As a result, the upper surface of the sheet 5b being conveyed is exposed between the drive roller 23d at the downstream end of the third belt conveyor 23 and the guide roller 24b of the fourth belt conveyor 24.

[0038] Furthermore, the drive roller 22a of the second belt conveyor 22 and the drive roller 24a of the fourth belt conveyor 24 rotate in opposite directions to move the conveyor belts 22c and 24c downstream between the fourth belt conveyor 24 and the second belt conveyor 22. Specifically, in Figure 1 In the example shown, drive roller 22a rotates to the right, and drive roller 24a rotates to the left at the same rotational speed as drive roller 22a.

[0039] Thus, sheet 5b is held between the second belt conveyor 22 and the fourth belt conveyor 24 while being conveyed downstream at a speed of V3. Furthermore, the conveying speed V3 of sheet 5b conveyed by the second belt conveyor 22 and the fourth belt conveyor 24 is set to approximately 1% higher than the conveying speed V2 of sheet 5b conveyed by the first belt conveyor 21 and the third belt conveyor 23. Specifically, the conveying speed V3 is set to approximately 500 mm / sec to 600 mm / sec, but is not limited to this.

[0040] Next, the dust removal mechanism 7 (refer to...) Figure 1 The following will be explained. In this embodiment, the dust removal mechanism 7 is envisioned as removing dust from sheet 5b (refer to...). Figure 1 Removed from cutting unit 31 (refer to) Figure 1 )The sheet 5a (refer to) Figure 1 Air supply devices such as blowers that deliver dust and chips sometimes generated during cutting. Figure 1As shown, the dust removal mechanism 7 is positioned above the second belt conveyor 22. Specifically, the dust removal mechanism 7 delivers air to the upper surface of the upward-facing sheet 5b between the drive roller 23d of the third belt conveyor 23 and the guide roller 24b of the fourth belt conveyor 24. The dust removal mechanism 7 also serves as a mechanism to prevent the sheet 5b conveyed between the drive roller 23d and the guide roller 24b from warping.

[0041] Next, refer to Figure 3 The conveying device 2 according to this embodiment will be described in more detail. In the following description, the up, down, left and right directions are based on the vertical direction of up and down, and the left and right directions are based on the view of the conveying device 2 from the downstream side to the upstream side. Figure 3 This is a perspective view of conveyor 2, showing the view of conveyor 2 from a slightly above and downstream side. Furthermore, Figure 3 For ease of drawing, the dust removal mechanism 7 has been omitted (see reference). Figure 1 ) and one of the pair of support plates 9 described later.

[0042] like Figure 3 As shown, the conveying device 2 includes: a support platform 8; and a pair of support plates 9 erected along the left and right sides of the upper part of the support platform 8. Figure 3 (Only one side is shown in the diagram). Moreover, a pair of support plates 9 arrange and support the first belt conveyor 21, the second belt conveyor 22, the third belt conveyor 23, and the fourth belt conveyor 24 between the pair of support plates 9.

[0043] The first belt conveyor 21 has a pair (multiple rows) of conveyor belts 21d. The spacing between the pair of conveyor belts 21d can be adjusted according to the sheet material 5 being conveyed (see reference). Figure 1 The width of the conveyor belts 21d is adjusted. Preferably, the spacing between the two conveyor belts 21d is set such that the spacing between the outer edges of the conveyor belts 21d in the left and right directions is greater than that between the outer edges of the sheet 5 (refer to the sheet 5). Figure 1 The width is slightly narrower, but it can still transport sheets up to 5 (refer to...). Figure 1 The range should be set appropriately.

[0044] Furthermore, the first belt conveyor 21, corresponding to a pair of conveyor belts 21d, includes: a pair of first guide rollers 21a; and a pair of second guide rollers 21b. Figure 3 In the diagram, there is a second guide roller 21b (not shown); and a pair of drive rollers 21c. The first guide roller 21a is rotatably mounted to the rotating shaft 21a1 via a bearing (not shown). The rotating shaft 21a1 is supported by a support plate 9.

[0045] The second guide roller 21b is rotatably mounted to the rotating shaft 21b1 via a bearing (not shown). The rotating shaft 21b1 is supported by the support plate 9. The drive roller 21c is mounted to the rotating shaft 21c1. The rotating shaft 21c1 is supported by the support plate 9. Furthermore, the drive roller 21c is rotated at the specified speed by a motor with a speed reducer (not shown) connected to the rotating shaft 21c1.

[0046] The second belt conveyor 22 has a pair of conveyor belts 22c. The pair of conveyor belts 22c are disposed close to the inner side of the pair of conveyor belts 21d of the first belt conveyor 21. In addition, the second belt conveyor 22 has, in correspondence with the pair of conveyor belts 22c, a pair of guide rollers 22b (the second rollers) and a pair of drive rollers 22a. The guide rollers 22b (the second rollers) are disposed close to the inner side of the drive rollers 21c (the first rollers) of the first belt conveyor 21, and are rotatably mounted to the rotating shaft 22b1 by bearings (not shown). The rotating shaft 22b1 is supported by the support plate 9.

[0047] Furthermore, the rotating shaft 22b1 of the second belt conveyor 22 and the rotating shaft 21c1 of the first belt conveyor 21 are arranged on the same shaft. That is, the guide roller 22b (the second roller) of the second belt conveyor 22 and the drive roller 21c (the first roller) of the first belt conveyor 21 can rotate independently of each other on the same shaft. The drive roller 22a is supported on the support plate 9 by the rotating shaft 22a1. Moreover, the drive roller 22a is rotated at the specified speed by a belt reducer motor (not shown) connected to the rotating shaft 22a1.

[0048] The third belt conveyor 23 has a single wide conveyor belt 23e. Preferably, the width of the conveyor belt 23e in this embodiment is set to be slightly narrower than the width of the sheet 5, but it can be appropriately set within the range that can convey the sheet 5.

[0049] The first guide roller 23a is rotatably mounted to the rotating shaft 23a1 via a bearing (not shown). The rotating shaft 23a1 is supported by the support plate 9. The second guide roller 23b is rotatably mounted to the rotating shaft 23b1 via a bearing (not shown). The rotating shaft 23b1 is supported by the support plate 9. The third guide roller 23c is rotatably mounted to the rotating shaft 23c1 via a bearing (not shown). The rotating shaft 23c1 is supported by the support plate 9. The drive roller 23d is supported by the rotating shaft 23d1 on the support plate 9. Furthermore, the drive roller 23d is rotated at the specified speed by a motor with a speed reducer (not shown) connected to the rotating shaft 23d1.

[0050] The fourth belt conveyor 24 has a pair of conveyor belts 24c. As described above, the conveyor belts 24c contact the conveyor belts 22c of the second belt conveyor 22 from above. Furthermore, the fourth belt conveyor 24, corresponding to the pair of conveyor belts 24c, has: a pair of guide rollers 24b; and a pair of drive rollers 24a. The guide rollers 24b are rotatably mounted to a rotating shaft 24b1 via bearings (not shown). The rotating shaft 24b1 is supported on a support plate 9. The drive rollers 24a are supported on the support plate 9 via the rotating shaft 24a1. Moreover, the drive rollers 24a are rotated at the specified speed by a belt reducer motor (not shown) connected to the rotating shaft 24a1.

[0051] Effects and benefits

[0052] Next, the effects of this embodiment will be explained. The conveying device 2 of this embodiment is a conveying device for conveying sheet 5b from the upstream side to the downstream side. The conveying device includes: a first belt conveyor 21; and a second belt conveyor 22 disposed on the downstream side of the first belt conveyor 21. The rotating shaft 21c1 of the drive roller 21c (first roller) on which the conveyor belt 21d is mounted at the downstream end of the first belt conveyor 21 and the rotating shaft 22b1 of the guide roller 22b (second roller) on which the conveyor belt 22c is mounted at the upstream end of the second belt conveyor 22 are set on the same shaft.

[0053] According to this conveying device 2, the connection gap between the first belt conveyor 21 located on the upstream side and the second belt conveyor 22 located on the downstream side is eliminated. As a result, the conveying device 2 can more reliably convey the sheet 5b from the upstream side to the downstream side without getting the sheet caught in the connection gap of the conveyors.

[0054] Furthermore, in such a conveying device 2, the first belt conveyor 21 has a pair (or multiple rows) of conveyor belts 21d in the direction of the rotation axis 21c1 of the drive roller 21c (first roller), and the second belt conveyor 22 has at least one row (in this embodiment, a pair (or multiple rows)) of conveyor belts 22c located between the pair (or multiple rows) of conveyor belts 21d of the first belt conveyor 21.

[0055] According to the conveying device 2, the sheet 5b conveyed by the first belt conveyor 21 can be conveyed more reliably from the downstream end of the first belt conveyor 21 to the upstream end of the second belt conveyor 22.

[0056] Furthermore, in such a conveying device 2, the drive roller 21c (first roller) of the first belt conveyor 21 and the guide roller 22b (second roller) of the second belt conveyor 22 can rotate independently of each other.

[0057] According to the conveying device 2, the conveying speed V2 of the sheet 5b in the first belt conveyor 21 and the conveying speed V3 of the sheet 5b in the second belt conveyor 22 can be set independently.

[0058] In addition, the conveying device 2 also includes a third belt conveyor 23, which has at least one (one in this embodiment) conveyor belt 23e. The at least one conveyor belt 23e clamps the sheet 5b between itself and the conveyor belt 21d of the first belt conveyor 21, and works in conjunction with the conveyor belt 21d to convey the sheet 5b.

[0059] According to the conveying device 2, the first belt conveyor 21 and the third belt conveyor 23 work together to more stably convey the sheet 5b downstream.

[0060] In addition, such a conveying device 2 also includes a fourth belt conveyor 24, which has at least one (in this embodiment, a pair (multiple rows)) of conveyor belts 24c. The at least one conveyor belt 24c clamps the sheet 5b between itself and the conveyor belt 22c of the second belt conveyor 22, and works in conjunction with the conveyor belt 22c to convey the sheet 5b.

[0061] According to the conveying device 2, the second belt conveyor 22 and the fourth belt conveyor 24 work together to more stably convey the sheet 5b downstream.

[0062] Furthermore, in such a conveying device 2, the conveying speed V3 of the sheet 5b conveyed by the second belt conveyor 22 and the fourth belt conveyor 24 is set to be faster than the conveying speed V2 of the sheet 5b conveyed by the first belt conveyor 21 and the third belt conveyor 23.

[0063] According to the conveying device 2, since the second belt conveyor 22 and the fourth belt conveyor 24 quickly convey the sheet 5b from the first belt conveyor 21 and the third belt conveyor 23 downstream, the sheet 5b from the first belt conveyor 21 and the third belt conveyor 23 can then be efficiently conveyed to the second belt conveyor 22 and the fourth belt conveyor 24.

[0064] Furthermore, in such a conveying device 2, the third belt conveyor 23 and the fourth belt conveyor 24 are arranged at a predetermined interval, and a dust removal mechanism 7 is provided to remove dust adhering to the sheet 5b that is exposed between the third belt conveyor 23 and the fourth belt conveyor 24 while being conveyed.

[0065] According to the conveying device 2, since the dust adhering to the sheet 5b being conveyed is removed, the quality of the sheet 5b as a product is improved. The dust removal mechanism 7 is particularly effective in the case of secondary battery electrode materials (sheet 5b) where dust (chips) are related to electrical performance.

[0066] The embodiments of the present invention have been described above; however, the present invention is not limited to the above embodiments and can be implemented in various forms. In the above embodiments, the conveying device 2 with a single conveyor belt 23e for the third belt conveyor 23 has been described; however, the conveying device 2 may also be configured such that the third belt conveyor 23 has multiple rows of conveyor belts 23e. That is, the conveying device 2 may also be configured such that the second belt conveyor 22, the third belt conveyor 23, and the fourth belt conveyor 24 each have multiple rows of conveyor belts 22c, 23e, and 24c.

[0067] According to the conveying device 2, by arranging multiple rows of conveyor belts 22c, 23e and 24c respectively, the sheet 5b can be conveyed more stably.

[0068] Furthermore, in the above embodiment, the conveying device 2 having a third belt conveyor 23 and a fourth belt conveyor 24 has been described. However, it may also be configured as follows: regarding the third belt conveyor 23, it may be configured as a roller conveyor (shown but not shown) without the conveyor belt 23e; regarding the fourth belt conveyor 24, it may be configured as a roller conveyor (shown but not shown) without the conveyor belt 24c. That is, the conveying device 2 may also include a roller conveyor (shown but not shown), which may be configured as follows: having a roller section (shown but not shown) that clamps the sheet 5b between at least one of the conveyor belt 21d of the first belt conveyor 21 and the conveyor belt 22c of the second belt conveyor 22, while cooperating with the conveyor belt 21d and / or the conveyor belt 22c to convey the sheet 5b.

[0069] According to this conveying device 2, the conveyor belts 23e and 24c can be omitted, thus simplifying the structure of the conveying device 2.

[0070] Furthermore, in the above embodiment, the conveying device 2 with the dust removal mechanism 7 positioned above the second belt conveyor 22 has been described. However, it is also possible to configure the structure with the dust removal mechanism 7 positioned below the second belt conveyor 22. That is, although the illustration is omitted, the conveying device 2 may also be configured such that the second belt conveyor 22 has multiple rows of conveyor belts 22c, and a dust removal mechanism 7 is provided on the opposite side of the fourth belt conveyor 24. This dust removal mechanism 7 removes dust adhering to the sheet 5b that is exposed between the multiple rows of conveyor belts 22c and being conveyed simultaneously.

[0071] According to the conveying device 2, dust adhering to the lower surface of the conveyed sheet 5b can also be removed.

Claims

1. A conveying device for conveying sheets from an upstream side to a downstream side, characterized in that, It comprises: a first belt conveyor; and a second belt conveyor disposed downstream of the first belt conveyor, wherein, The rotating shaft of the first roller, on which the conveyor belt is laid at the downstream end of the first belt conveyor, and the rotating shaft of the second roller, on which the conveyor belt is laid at the upstream end of the second belt conveyor, are set on the same shaft.

2. The conveying device according to claim 1, characterized in that, The first belt conveyor has multiple rows of conveyor belts in the direction of rotation of the first roller, and the second belt conveyor has at least one row of conveyor belts located between the multiple rows of conveyor belts of the first belt conveyor.

3. The conveying device according to claim 1, characterized in that, The first roller of the first belt conveyor and the second roller of the second belt conveyor can rotate independently of each other.

4. The conveying device according to claim 1, characterized in that, It also features a third belt conveyor. The third belt conveyor has at least one conveyor belt that, while clamping the sheet between itself and the conveyor belt of the first belt conveyor, works in conjunction with the conveyor belt of the first belt conveyor to transport the sheet.

5. The conveying device according to claim 4, characterized in that, It also features a fourth belt conveyor. The fourth belt conveyor has at least one set of conveyor belts that, while clamping the sheet between itself and the conveyor belt of the second belt conveyor, also work in coordination with the conveyor belt of the second belt conveyor to transport the sheet.

6. The conveying device according to claim 5, characterized in that, The conveying speed of the sheet conveyed by the second belt conveyor and the fourth belt conveyor is set to be faster than the conveying speed of the sheet conveyed by the first belt conveyor and the third belt conveyor.

7. The conveying device according to claim 5, characterized in that, The third and fourth belt conveyors are configured with a predetermined interval. The conveying device has a dust removal mechanism that removes dust adhering to the sheet material being conveyed while exposed between the third and fourth belt conveyors.

8. The conveying device according to claim 5, characterized in that, The second belt conveyor, the third belt conveyor, and the fourth belt conveyor have multiple rows of conveyor belts.

9. The conveying device according to claim 1, characterized in that, The conveying device also includes a roller conveyor. The roller conveyor has a roller section that clamps the sheet between itself and at least one of the conveyor belts of the first belt conveyor and the second belt conveyor, while cooperating with the conveyor belts to transport the sheet.

10. The conveying device according to claim 5, characterized in that, The second belt conveyor has multiple rows of conveyor belts and a dust removal mechanism on the opposite side of the fourth belt conveyor, which removes dust adhering to the sheet material being conveyed while exposed between the multiple rows of conveyor belts.

11. The conveying device according to claim 1, characterized in that, The sheet is a coated current collector foil used as an electrode material for secondary batteries.

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