WO2015162746A1 - Rolled sheet-material holding device and battery laminate body manufacturing method - Google Patents
Rolled sheet-material holding device and battery laminate body manufacturing method Download PDFInfo
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- WO2015162746A1 WO2015162746A1 PCT/JP2014/061527 JP2014061527W WO2015162746A1 WO 2015162746 A1 WO2015162746 A1 WO 2015162746A1 JP 2014061527 W JP2014061527 W JP 2014061527W WO 2015162746 A1 WO2015162746 A1 WO 2015162746A1
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- holding shaft
- roll
- holding
- sheet material
- shaped sheet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/02—Supporting web roll
- B65H16/04—Supporting web roll cantilever type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a holding device for a sheet material wound in a roll shape (hereinafter also referred to as a roll-shaped sheet material) and a method for manufacturing a battery laminate.
- the separator sheet raw material constituting the battery stack is loaded into the battery stack manufacturing process in a roll-shaped package, and laminated while being pulled out while being held rotatably. To be served.
- a lathe chuck for gripping and positioning and fixing an object to be cut is related to this type of roll sheet material holding device.
- a lathe chuck provided is known (Patent Document 1).
- the conventional holding structure is a structure for holding a workpiece inside the chuck body, it can be used for a roll sheet material holding device used in the manufacturing process of a battery laminate. Can not.
- the problem to be solved by the present invention is to provide a holding device and a method for manufacturing a battery laminate that can suppress wrinkles when a roll-shaped sheet material is pulled out.
- one fixed chuck portion and at least two movable chuck portions that move forward and backward in the radial direction of the holding shaft are provided on the side surface of the holding shaft having an outer diameter smaller than the inner diameter of the hollow portion of the roll-shaped sheet material.
- the at least two movable chuck portions are set to the retracted position, and the fixed chuck portion is set to the upper surface position in the vertical direction of the holding shaft.
- the at least two movable chuck portions are moved to the advance position to press the hollow portion, and the roll-shaped sheet material is fixed to the holding shaft. That is, by inserting and placing the hollow portion of the roll-shaped sheet material on the holding shaft in the state where the movable chuck portion is in the retracted position, the holding shaft and the central axis of the roll-shaped sheet material are caused by the weight of the roll-shaped sheet material.
- the movable chuck is moved to the forward position and fixed, so the holding shaft and the central axis of the roll-shaped sheet material are parallel even when they are eccentric. In addition, the sheet material is not bent and the generation of wrinkles can be suppressed.
- FIG. 5B is an enlarged sectional view taken along line VB-VB in FIG. 5A.
- FIG. 6 is a cross-sectional view (corresponding to the line VB-VB in FIG. 5A) showing a holding shaft of a holding device according to another embodiment of the present invention.
- FIG. 6 is a cross-sectional view (corresponding to the line VB-VB in FIG. 5A) showing a holding shaft of a holding device according to still another embodiment of the present invention.
- FIG. 6 is a cross-sectional view (corresponding to the line VB-VB in FIG. 5A) showing a holding shaft of a holding device according to still another embodiment of the present invention.
- the roll sheet material holding device and battery laminate manufacturing method of the present invention can be applied to, for example, a power generation element (battery element) of a lithium ion secondary battery, that is, a battery stack manufacturing process.
- a power generation element battery element
- a battery stack manufacturing process a battery stack manufacturing process.
- the battery stack 1 of this example is a battery element of a lithium ion thin secondary battery, and has a separator 13 interposed between a positive electrode sheet 11 and a negative electrode sheet 12 as shown in FIG. One unit is used, and one or more of these are stacked. Note that the number of stacked positive electrode sheets 11, negative electrode sheets 12, and separators 13 can be selected as necessary, such as the capacity and output power of the secondary battery.
- the positive electrode sheet 11 is made of a positive electrode active material such as a metal oxide, a conductive material such as carbon black, and an adhesive such as an aqueous dispersion of polytetrafluoroethylene in a weight ratio of, for example, 100: 3: 10.
- the positive electrode active material 111 mixed in (1) is applied to both surfaces of a metal foil such as an aluminum foil as the positive electrode current collector 112, dried, rolled, and then cut into a predetermined size.
- the mixing ratio of said aqueous dispersion of polytetrafluoroethylene is the solid content.
- the positive electrode active material include lithium composite oxides such as lithium nickelate (LiNiO2), lithium manganate (LiMnO2), and lithium cobaltate (LiCoO2), and chalcogen (S, Se, Te) compounds.
- the negative electrode sheet 12 is a precursor of an organic fired body to a negative electrode active material that occludes and releases lithium ions of the positive electrode active material, such as amorphous carbon, non-graphitizable carbon, graphitizable carbon, or graphite.
- a negative electrode active material such as amorphous carbon, non-graphitizable carbon, graphitizable carbon, or graphite.
- an aqueous dispersion of styrene butadiene rubber resin powder as a material is mixed at a solid content ratio of, for example, 100: 5, dried, and then pulverized to carry carbonized styrene butadiene rubber on the surface of carbon particles.
- a binder such as an acrylic resin emulsion is mixed at a weight ratio of, for example, 100: 5 to form the negative electrode active material 121.
- the negative electrode active material 121 is applied to both surfaces of a metal foil such as a nickel foil or a copper foil as the negative electrode current collector 122, dried, rolled, and then cut into a predetermined size.
- a metal foil such as a nickel foil or a copper foil
- the flatness of the potential during charge / discharge is poor and the output voltage decreases with the amount of discharge.
- the separator 13 has an electrical insulation property that prevents an electrical short circuit between the positive electrode sheet 11 and the negative electrode sheet 12 described above, and may have a function of holding an electrolytic solution.
- the separator 13 is a microporous film made of polyolefin such as polyethylene (PE) or polypropylene (PP), for example, and when an overcurrent flows, the pores of the film are blocked by the heat generation, thereby blocking the current. It also has.
- the separator 13 is not limited to a single-layer film such as polyolefin, but a three-layer structure in which a polypropylene layer is sandwiched between polyethylene layers, or a laminate of a polyolefin microporous film and an organic nonwoven fabric can also be used. By forming the separator 13 in multiple layers, various functions such as an overcurrent prevention function, an electrolyte holding function, and a separator shape maintenance (stiffness improvement) function can be provided.
- an adhesive layer 14 is formed between the separator 13 and the laminated surface of the positive electrode current collector 112 and between the separator 13 and the laminated surface of the negative electrode current collector 122 by applying an adhesive described later. Is done.
- the adhesive layer 14 is formed on the surface of the positive electrode current collector 112 at a portion where the positive electrode active material 111 is not formed, and is formed along the side surface of the positive electrode current collector 112.
- the adhesive layer 14 is formed on the surface of the negative electrode current collector 122 in a portion where the negative electrode active material 121 is not formed, and is formed along the side surface of the negative electrode current collector 122.
- the material of the adhesive layer 14 is, for example, an epoxy-based or polyurethane-based adhesive, and preferably an epoxy-based resin having a hardness of 50 or higher (Type-D).
- the above is the configuration of the battery stack 1 of this example.
- the positive electrode current collector 112 of the positive electrode sheet 11 and the negative electrode current collector 122 of the negative electrode sheet 12 are omitted.
- One end of each is extended and collected, and a positive electrode tab (positive electrode terminal) and a negative electrode tab (negative electrode terminal) are connected.
- this battery laminated body 1 is accommodated in a battery exterior member, and an organic liquid solvent is lithium perchlorate (LiClO 4 ), lithium borofluoride (LiBF 4 ), lithium hexafluorophosphate (LiPF 6 ), hexafluoride.
- a thin secondary battery is completed by injecting an electrolytic solution in which a lithium salt such as lithium arsenic (LiAsF 6 ) is dissolved as a solute and then sealing the battery exterior member.
- FIG. 2A shows a manufacturing process until the positive electrode sheet 11, the negative electrode sheet 12, and the separator 13 are respectively produced and laminated, and illustration is omitted, but as a subsequent process, a curing process of the adhesive layer 14 and There are a cutting step of the stacked battery stack 1 and a step of injecting an electrolyte into the cut battery stack 1.
- the positive electrode active material 111 is applied to both surfaces of the positive electrode current collector 112 and dried by the dryer M1.
- the adhesive constituting the adhesive layer 14 is applied to the laminated surface of the positive electrode sheet 11 using the rotary screen printing machine M2.
- the adhesive is printed in a positioned state using, for example, a mask or the like according to the size of the laminated battery to be manufactured.
- the adhesive is printed on the cross line with respect to the side surface portion excluding the surface including the electrode tab and the center of the laminated surface of the positive electrode sheet 11. To do.
- the negative electrode sheet 12 In the sheet cutting step, the sheet is cut from a roll to a sheet using a rotary cutter M3, for example, in units of four sheets.
- the negative electrode active material 121 is applied to both surfaces of the negative electrode current collector 122, and the negative electrode sheet 12 is dried by the dryer M1.
- the adhesive constituting the adhesive layer 14 is applied to the laminated surface of the negative electrode sheet 12 using the rotary screen printer M2.
- the sheet cutting step the sheet is cut from a roll to a sheet using a rotary cutter (not shown), for example, in units of four sheets.
- the separator wound in a roll shape is pulled out, and is cut from a roll to a sheet using a rotary cutter (not shown), for example, in units of four faces.
- the adhesive is applied to the laminated surface of the positive electrode sheet 11 and the negative electrode sheet 12, but may be applied to the laminated surface of the separator 13.
- a thermoplastic hot melt material is used for the adhesive.
- a compression seal or a gasket may be used instead of the adhesive.
- the positive electrode production line, the negative electrode production line, and the separator production line merge, and the positive electrode sheet 11, the negative electrode sheet 12, and the separator 13 cut in the cutting process are put into the lamination stacker M4 and laminated.
- the respective constituent members may be roughly laminated, for example, with a lamination accuracy of about ⁇ 0.1 to 1.0 mm.
- the laminated body including the laminated positive electrode sheet 11, negative electrode sheet 12, and separator layer 30 becomes the battery laminated body 1 of this example.
- the battery laminated body 1 is thrown into a continuous furnace in a hardening process, is pressed, and is thermoset.
- the adhesive becomes the adhesive layer 14 and bonds between the positive electrode sheet 11 and the separator 13 and between the negative electrode sheet 12 and the separator 13.
- the battery laminated body 1 is hold
- the battery stack 1 is divided into four battery stacks. And after joining an electrode tab to each of the positive electrode current collector 112 and the negative electrode current collector 122, the electrolytic solution is injected by immersing it in the electrolytic solution tank while suspending and transporting the cut battery laminate. . Finally, a thin battery of this example is completed by laminating a battery exterior member (not shown).
- the separator sheet raw material R1 made of a polyolefin resin film or the like is a sheet having a predetermined width (a length corresponding to the width of two unit cells in the above example).
- the separator sheet raw material R1 is pulled out (or sent out) in a state where the roll-shaped separator sheet raw material R1 is rotatably held while being wound around the hollow core material R2. Cut to a predetermined length.
- FIG. 2B is a process diagram showing this separator manufacturing process, and the sheet material S drawn from the roll separator sheet raw material R1 is guided to the cutting process by a plurality of guide rollers GR.
- the holding device 2 of the present example described below holds the roll separator sheet raw material R1 in a rotatable manner in the separator manufacturing process.
- FIG. 3 is a perspective view showing an embodiment of the roll sheet material holding device 2 according to the present invention, in which the sheet material S is wound in a roll shape, and the hollow portion R3 is formed in the axial direction including the central axis CL1.
- a holding device 2 that rotatably holds the roll-shaped sheet material R1 that has the outer diameter D2 that is rotatably supported by the base 21 and that is smaller than the inner diameter D1 of the hollow portion R3.
- the holding shaft 22 to be inserted (the rotation center axis of the holding shaft 22 is CL2), the fixed chuck portion 24 provided to fix the position on the side surface 230 of the holding shaft 22, and the fixed chuck portion 24 of the holding shaft 22 are provided.
- At least two movable chuck portions 25, 25 provided so as to be movable forward and backward in the radial direction of the holding shaft 22, and at least two movable chuck portions 25, 25 are moved forward on the side surfaces 230 other than the side surfaces 230. as well as It includes a drive unit 26 for retirement move, the.
- FIG. 4 is a side view (IV view of FIG. 3) showing the roll-shaped sheet material holding device 2 of FIG. 3, and the base 21 includes a first base 211 placed on the floor surface or the like in the separator manufacturing process.
- the second base 212 is provided with the holding shaft 22 and the drive unit 26.
- the second base 212 includes the second base 212 standing from the first base 211.
- FIG. 5A is a cross-sectional view showing the holding shaft 22 of the holding device 2 of FIGS. 3 and 4, and FIG. 5B is a schematic cross-sectional view taken along the line VB-VB of FIG. 5A.
- the holding shaft 22 is fixed to the upper portion of the second base 212.
- the holding shaft 22 of this example is connected to the outer cylinder portion 221 fixed to the second base 212 and the bearing 223.
- a holding shaft main body 224 is fixed to the right end of the inner cylindrical portion 222.
- the inner cylindrical portion 222 is rotatably provided with respect to the outer cylindrical portion 221.
- a gear 225 is fixed to the left end of the inner cylinder part 222 and connected to a drive source such as a motor (not shown), whereby the inner cylinder part 222 and the holding shaft main body 224 rotate at a predetermined rotational speed.
- the inner cylindrical portion 222 and the holding shaft main body 224 are fixed by flange joints 226 and 226, and the flange joint 226 also determines a position when the roll sheet material R1 is mounted.
- a through-hole 227 is continuously formed at the center of the inner cylindrical portion 222 and the center of the holding shaft main body 224, and a pin 229 is inserted through the bearing 228. Since the left end of the pin 229 is connected to the drive unit 26 described later and is non-rotating, the inner cylindrical portion 222 rotates but the pin 229 does not rotate, and is indicated by a two-dot chain line from the position indicated by the solid line in FIG. 5A. Move to the right. As a result, the movable chuck portion 25 moves forward and backward in the radial direction of the holding shaft 22.
- openings 231 are formed at two locations on the side surface 230 of the holding shaft main body 224, and one end of the link member 251 is pivotally supported around the rotation shaft 252 and the other end is a pin 229.
- a roller 253 that slides with a conical tapered surface 232 formed at the tip of the roller is rotatably provided.
- the rotating shaft 252 of the link member 251 is provided with a coil spring or the like (not shown) that is elastically biased in the right rotation direction shown by the solid line in FIG. 5A, and the pin 229 has two positions along the solid line shown in the figure.
- a chuck piece 254 is pivotally supported at the center of the link member 251 so as to be rotatable about a rotation shaft 255 at the center.
- the advance dimension of the chuck piece 254 is set to a value larger than D1-D2 by a predetermined dimension, and thereby the inner surface of the hollow portion R3 of the core material R2 Will be held.
- 5A is driven by an actuator 261 and a link mechanism 262 configured by an air cylinder or the like shown in FIG. That is, the actuator 261 is fixed to the second base 212, and one end of a link mechanism 262 that rotates about the rotary shaft 264 is coupled to a rod 263 that moves forward and backward through the second base. The other end of 262 is connected to the base end of the pin 229.
- the actuator 261 is actuated to advance the rod 263
- the pin 229 moves to the right via the link mechanism 262 as shown by a two-dot chain line in FIG. 4, and when the rod 263 moves backward, the solid line in FIG.
- the pin 229 moves to the left via the link mechanism 262.
- the movement distance of the rod 263 by the actuator 261 corresponds to the movement distance of the pin 229 indicated by the solid line and the two-dot chain line in FIG. 5A described above.
- the movable chuck portion 25 described above is provided at two locations in the circumferential direction of the holding shaft main body 224.
- the fixed chuck portion 24 is provided at one place, and the one fixed chuck portion 24 and the two movable chuck portions 25, 25 are positioned at an equal angle in the circumferential direction of the holding shaft body 224, that is, adjacent to each other. Are provided at a position where the mutual angle is 120 °.
- the fixed chuck portion 24 of this example is provided to be fixed to the side surface 230 of the holding shaft main body 224, and from the side surface 230, the inner diameter D1 of the hollow portion R3 of the core member R2 and the outer diameter D2 of the holding shaft main body 224.
- the height in the axial direction is not particularly limited, but is equal to or longer than the axial length of the chuck piece 254 of the movable chuck portion 25.
- the surface of the fixed chuck portion 24 is a surface parallel to the central axis CL ⁇ b> 2 of the holding shaft 22.
- the holding device 2 according to the comparative example shown in FIG. 6A has three movable chuck portions 25 provided at equal angles on the holding shaft main body 224 of the holding shaft 22, and the holding device 2 of this example shown in FIG. On the other hand, there is no fixed chuck portion 24, and instead a movable chuck portion 25 is used.
- the dotted line in FIG. 6A has shown the inner surface of hollow part R3 of core material R2.
- the hollow portion R3 of the core material R2 is held in the holding shaft with the chuck pieces 254 of the three movable chuck portions 25 retracted as shown in the upper diagram of FIG. 6A. It is inserted into the main body 224 and placed on the holding shaft main body 224. From this state, as shown in the lower drawing of the figure, the chuck pieces 254 of the three movable chuck portions 25 are advanced to press the inner surface of the hollow portion R3 of the core material R2 with the chuck pieces 254, and thereby the roll sheet material R1.
- the chuck piece 254 of the movable chuck portion 25 located on the upper surface of the holding shaft main body 224 has the roll-shaped sheet material R 1.
- Weight acts. Therefore, if the chuck piece 254 does not advance by the same dimension along the axial direction of the holding shaft 22, the central axis CL2 of the holding shaft 22 and the central axis CL1 of the roll sheet material R1 are parallel as shown in the plan view of FIG. 6B. Otherwise, twisting may occur. Then, when the sheet material S is unwound in a state where twisting occurs, as shown in FIG. 6B, the left and right sides of the sheet material S between the guide roller GR (particularly, the guide roller GR that applies tension) and the roll-shaped sheet material R1. A tension imbalance occurs at the end, which leads to wrinkles.
- the fixed chuck portion 24 is set to the upper surface position in the vertical direction as shown in the upper view of FIG. 7A.
- the hollow portion R3 of the core material R2 is inserted into the holding shaft main body 224 with the chuck pieces 254 of the two movable chuck portions 25 retracted, and placed on the fixed chuck portion 24 of the holding shaft main body 224.
- the surface of the fixed chuck portion 24 is a surface parallel to the central axis CL2 of the holding shaft 22, when it is placed on the holding shaft main body 224 by its own weight, the roll-shaped sheet material R1.
- the central axis CL1 of the roll-shaped sheet material R1 becomes parallel to the central axis CL2 of the holding shaft 22.
- the upper surface of the fixed chuck portion 24 of the present example protrudes from the side surface 230 of the holding shaft main body 224 by a difference D1-D2 between the inner diameter D1 of the hollow portion R3 of the core member R2 and the outer diameter D2 of the holding shaft main body 224. 7A, the center axis CL1 of the roll-shaped sheet material R1 not only becomes parallel to the center axis CL2 of the holding shaft 22, but also coincides without being eccentric.
- the upper surface of the fixed chuck portion 24 protrudes from the side surface 230 of the holding shaft main body 224 by the difference D1-D2 between the inner diameter D1 of the hollow portion R3 of the core member R2 and the outer diameter D2 of the holding shaft main body 224.
- a portion flush with the side surface 230 of the holding shaft main body 224 may be used as the fixed chuck portion 24.
- FIG. 8A is a cross-sectional view showing this example (a cross-sectional view corresponding to FIG. 5B).
- the hollow portion R3 of the core material R2 is inserted into the holding shaft main body 224 and placed on the fixed chuck portion 24 of the holding shaft main body 224.
- the fixed chuck portion 24 is configured by a part of the side surface 230 of the holding shaft main body 224, so that it is not necessary to bury another member, and it may be configured by a part of the holding shaft main body 224.
- the portion of the fixed chuck portion 24 is rotated to the upper surface in the vertical direction of the holding shaft main body 224 so that the two movable chuck portions 25 and 25 are equiangularly arranged on the lower side in the vertical direction. Since it needs to be positioned, it is preferable to provide a mark such as a mark on the fixed chuck portion 24.
- the hollow portion R3 of the core material R2 is inserted into the holding shaft main body 224 with the chuck pieces 254 of the two movable chuck portions 25 retracted, and the fixed chuck portion 24 of the holding shaft main body 224 is inserted.
- the central axis CL1 of the roll-shaped sheet material R1 becomes parallel to the central axis CL2 of the holding shaft 22.
- the chuck pieces 254 of the two movable chuck portions 25 are advanced from this state to press the inner surface of the hollow portion R3 of the core material R2 with the chuck pieces 254, thereby holding the roll sheet material R1 on the holding shaft 22. To do.
- the central axis CL1 of the roll-shaped sheet material R1 is parallel to the eccentric center axis CL2 of the holding shaft 22, so that when the sheet material S is unwound, the guide roller GR (especially a guide for applying tension).
- the tension is balanced at the left and right ends of the sheet material S between the roller GR) and the roll-shaped sheet material R1, and the generation of wrinkles can be suppressed.
- one fixed chuck portion 24 and two movable chuck portions 25 are provided for one holding shaft main body 224.
- one fixed chuck portion 24 and three movable chuck portions 25 are provided.
- 8B shows another example in which three movable chuck portions 25 are provided in the embodiment of FIG. 5B, and one fixed chuck portion 24 and three movable chuck portions 25 are arranged at an equal angle in the circumferential direction of the holding shaft main body 224.
- Indicates. 8C has three movable chuck portions 25 with respect to the embodiment of FIG. 8A, and one fixed chuck portion 24 and three movable chuck portions 25 are arranged at equal angles in the circumferential direction of the holding shaft main body 224. Another example is shown.
- the fixed chuck portion 24 is rotated to the upper surface position in the vertical direction and the chuck pieces 254 of the three movable chuck portions 25 are retracted.
- the hollow portion R3 of the core material R2 is inserted into the holding shaft main body 224 and placed on the fixed chuck portion 24 of the holding shaft main body 224, whereby the central axis CL1 of the roll-shaped sheet material R1 is the center of the holding shaft 22. It becomes parallel to the axis CL2.
- the tapered surface 232 corresponds to the first cam surface according to the present invention
- the roller 253 corresponds to the second cam surface according to the present invention.
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Abstract
Provided is a holding device (2) that rotatably holds a rolled sheet-material (R1) in which a sheet material (S) is wound in a roll shape and which has in the axial direction a hollow section (R3) including a central axis (CL1), wherein the holding device comprises: a holding shaft (22) which is rotatably supported with respect to a base plate (21), has a diameter (D2) smaller than the diameter (D1) of the hollow section, and is inserted into the hollow section; a fixed chuck part (24) which is disposed so as to be positionally fixed to a lateral surface (230) of the holding shaft; at least two movable chuck parts (25) that are disposed on lateral surfaces of the holding shaft other than the lateral surface on which the fixed chuck part is disposed and that are disposed so as to be able to move forward and backward in the radial direction of the holding shaft; and a driving unit (26) which causes the at least two movable chucks parts to move forward and backward.
Description
本発明は、ロール状に巻かれたシート材(以下、ロール状シート材ともいう。)の保持装置及び電池積層体の製造方法に関するものである。
The present invention relates to a holding device for a sheet material wound in a roll shape (hereinafter also referred to as a roll-shaped sheet material) and a method for manufacturing a battery laminate.
電池積層体を構成するセパレータのシート原材は、ロール状に巻かれた荷姿で電池積層体の製造工程に搬入され、当該ロール状シート材を回転可能に保持した状態で引き出されながら積層加工に供される。この種のロール状シート材の保持装置に関連するものとして、被切削物を把持及び位置決め固定する旋盤用チャックがある。たとえば、チャック本体の円周方向に等角度で配置され、駆動ハンドルが操作されることで径方向に同時に進退可能な複数の爪チャックと、円周方向で隣接する爪チャック間のうち、少なくとも2以上の爪チャック間に設けられて径方向に個別に進退可能であり、且つ、各爪チャックによって把持された被切削物に当接して該被切削物の偏心位置を調整可能な調整ピンと、を備える旋盤用チャックが知られている(特許文献1)。
The separator sheet raw material constituting the battery stack is loaded into the battery stack manufacturing process in a roll-shaped package, and laminated while being pulled out while being held rotatably. To be served. A lathe chuck for gripping and positioning and fixing an object to be cut is related to this type of roll sheet material holding device. For example, at least two of a plurality of claw chucks arranged at equal angles in the circumferential direction of the chuck body and capable of simultaneously moving back and forth in the radial direction by operating the drive handle and at least two claw chucks adjacent in the circumferential direction An adjustment pin that is provided between the claw chucks and that can be individually advanced and retracted in the radial direction and that can adjust the eccentric position of the workpiece by contacting the workpieces held by the claw chucks; A lathe chuck provided is known (Patent Document 1).
ところで、リチウムイオン二次電池の電池積層体を構成するセパレータのように、薄いフィルムを取り扱う製造工程においては、ロール状の荷姿から引き出したシート材に皺が発生し易くこれを抑制することが要求されるが、上記従来の保持構造では、チャック本体の内側にワークを保持する構造であるため、そもそも、電池積層体の製造工程に用いられるロール状シート材の保持装置には利用することができない。
By the way, in the manufacturing process of handling a thin film, such as a separator constituting a battery laminate of a lithium ion secondary battery, wrinkles are likely to occur in a sheet material drawn out from a roll-shaped package, and this can be suppressed. Although it is required, since the conventional holding structure is a structure for holding a workpiece inside the chuck body, it can be used for a roll sheet material holding device used in the manufacturing process of a battery laminate. Can not.
本発明が解決しようとする課題は、ロール状シート材を引き出したときに皺の発生を抑制することができる保持装置及び電池積層体の製造方法を提供することである。
The problem to be solved by the present invention is to provide a holding device and a method for manufacturing a battery laminate that can suppress wrinkles when a roll-shaped sheet material is pulled out.
本発明は、ロール状シート材の中空部の内径より小さい外径の保持軸の側面に、1つの固定チャック部と、保持軸の径方向に前進移動及び後退移動する少なくとも2つの可動チャック部を設けることによって、上記課題を解決する。
According to the present invention, one fixed chuck portion and at least two movable chuck portions that move forward and backward in the radial direction of the holding shaft are provided on the side surface of the holding shaft having an outer diameter smaller than the inner diameter of the hollow portion of the roll-shaped sheet material. By providing, the said subject is solved.
本発明によれば、ロール状シート材を保持軸に装着する場合には、少なくとも2つの可動チャック部を後退位置にするとともに、固定チャック部を保持軸の鉛直方向の上面位置にした状態で、保持軸にロール状シート材の中空部を挿入して載置したのち、少なくとも2つの可動チャック部を前進位置に移動させて中空部を押圧し、ロール状シート材を保持軸に固定する。すなわち、可動チャック部を後退位置にした状態で保持軸にロール状シート材の中空部を挿入して載置することで、ロール状シート材の自重によって保持軸とロール状シート材の中心軸が平行に位置決めされ、この状態で可動チャック部を前進位置に移動して固定するので、保持軸とロール状シート材の中心軸が偏芯していても平行であるから、シート材を引き出したときに当該シート材に撓みがなくなり、皺の発生を抑制することができる。
According to the present invention, when the roll-shaped sheet material is mounted on the holding shaft, the at least two movable chuck portions are set to the retracted position, and the fixed chuck portion is set to the upper surface position in the vertical direction of the holding shaft. After the hollow portion of the roll-shaped sheet material is inserted and placed on the holding shaft, the at least two movable chuck portions are moved to the advance position to press the hollow portion, and the roll-shaped sheet material is fixed to the holding shaft. That is, by inserting and placing the hollow portion of the roll-shaped sheet material on the holding shaft in the state where the movable chuck portion is in the retracted position, the holding shaft and the central axis of the roll-shaped sheet material are caused by the weight of the roll-shaped sheet material. In this state, the movable chuck is moved to the forward position and fixed, so the holding shaft and the central axis of the roll-shaped sheet material are parallel even when they are eccentric. In addition, the sheet material is not bent and the generation of wrinkles can be suppressed.
本発明のロール状シート材の保持装置及び電池積層体の製造方法は、たとえばリチウムイオン二次電池の発電要素(電池要素)、すなわち電池積層体の製造工程に適用することができるので、これを一例に本発明を説明する。ただし、以下の実施形態は本発明の理解を容易にするための一例であって、本例に何ら限定される趣旨ではない。
The roll sheet material holding device and battery laminate manufacturing method of the present invention can be applied to, for example, a power generation element (battery element) of a lithium ion secondary battery, that is, a battery stack manufacturing process. The present invention will be described by way of example. However, the following embodiment is an example for facilitating understanding of the present invention, and is not intended to be limited to this example.
本例の電池積層体1は、リチウムイオン系の薄型二次電池の電池要素であり、図1に示すように、正極シート11と負極シート12との間にセパレータ13が介装されたものを一単位とし、これらが単数又は複数積層されている。なお、二次電池の容量や出力電力など必要に応じて、正極シート11、負極シート12およびセパレータ13の積層数を選択することができる。
The battery stack 1 of this example is a battery element of a lithium ion thin secondary battery, and has a separator 13 interposed between a positive electrode sheet 11 and a negative electrode sheet 12 as shown in FIG. One unit is used, and one or more of these are stacked. Note that the number of stacked positive electrode sheets 11, negative electrode sheets 12, and separators 13 can be selected as necessary, such as the capacity and output power of the secondary battery.
正極シート11は、金属酸化物などの正極活物質に、カーボンブラックなどの導電材と、ポリ四フッ化エンチレンの水性ディスパージョンなどの接着剤とを、重量比でたとえば100:3:10の割合で混合した正極活性材111を、正極集電体112としてのアルミニウム箔などの金属箔の両面に塗着、乾燥させ、圧延したのち所定の大きさに切断したものである。なお、上記のポリ四フッ化エチレンの水性ディスパージョンの混合比率は、その固形分である。正極活物質としては、例えばニッケル酸リチウム(LiNiO2)、マンガン酸リチウム(LiMnO2)、コバルト酸リチウム(LiCoO2)などのリチウム複合酸化物や、カルコゲン(S、Se、Te)化物を挙げることができる。
The positive electrode sheet 11 is made of a positive electrode active material such as a metal oxide, a conductive material such as carbon black, and an adhesive such as an aqueous dispersion of polytetrafluoroethylene in a weight ratio of, for example, 100: 3: 10. The positive electrode active material 111 mixed in (1) is applied to both surfaces of a metal foil such as an aluminum foil as the positive electrode current collector 112, dried, rolled, and then cut into a predetermined size. In addition, the mixing ratio of said aqueous dispersion of polytetrafluoroethylene is the solid content. Examples of the positive electrode active material include lithium composite oxides such as lithium nickelate (LiNiO2), lithium manganate (LiMnO2), and lithium cobaltate (LiCoO2), and chalcogen (S, Se, Te) compounds.
負極シート12は、例えば非晶質炭素、難黒鉛化炭素、易黒鉛化炭素、または黒鉛などのように、正極活物質のリチウムイオンを吸蔵および放出する負極活物質に、有機物焼成体の前駆体材料としてのスチレンブタジエンゴム樹脂粉末の水性ディスパージョンをたとえば固形分比100:5で混合し、乾燥させたのち粉砕することで、炭素粒子表面に炭化したスチレンブタジエンゴムを担持させたものを主材料とし、これに、アクリル樹脂エマルジョンなどの結着剤をたとえば重量比100:5で混合し、負極活性材121を形成する。そして、当該負極活性材121を、負極集電体122としてのニッケル箔或いは銅箔などの金属箔の両面に塗着、乾燥させ、圧延したのち所定の大きさに切断したものである。特に負極活物質として非晶質炭素や難黒鉛化炭素を用いると、充放電時における電位の平坦特性に乏しく放電量にともなって出力電圧も低下するので、通信機器や事務機器の電源には不向きであるが、電気自動車等の電源として用いると急激な出力低下がないので有利である。
The negative electrode sheet 12 is a precursor of an organic fired body to a negative electrode active material that occludes and releases lithium ions of the positive electrode active material, such as amorphous carbon, non-graphitizable carbon, graphitizable carbon, or graphite. For example, an aqueous dispersion of styrene butadiene rubber resin powder as a material is mixed at a solid content ratio of, for example, 100: 5, dried, and then pulverized to carry carbonized styrene butadiene rubber on the surface of carbon particles. Then, a binder such as an acrylic resin emulsion is mixed at a weight ratio of, for example, 100: 5 to form the negative electrode active material 121. Then, the negative electrode active material 121 is applied to both surfaces of a metal foil such as a nickel foil or a copper foil as the negative electrode current collector 122, dried, rolled, and then cut into a predetermined size. In particular, when amorphous carbon or non-graphitizable carbon is used as the negative electrode active material, the flatness of the potential during charge / discharge is poor and the output voltage decreases with the amount of discharge. However, when used as a power source for an electric vehicle or the like, it is advantageous because there is no sudden drop in output.
セパレータ13は、上述した正極シート11と負極シート12との電気的短絡を防止する電気絶縁性を有するものであり、電解液を保持する機能を備えてもよい。セパレータ13は、例えばポリエチレン(PE)やポリプロピレン(PP)などのポリオレフィン等から構成される微多孔性膜であり、過電流が流れると、その発熱によって膜の空孔が閉塞され電流を遮断する機能をも有する。なお、セパレータ13は、ポリオレフィンなどの単層膜にのみ限られず、ポリプロピレン層をポリエチレン層で挟んだ三層構造や、ポリオレフィン微多孔膜と有機不織布などを積層したものも用いることができる。セパレータ13を複層化することで、過電流の防止機能、電解質保持機能およびセパレータの形状維持(剛性向上)機能などの諸機能を付与することができる。
The separator 13 has an electrical insulation property that prevents an electrical short circuit between the positive electrode sheet 11 and the negative electrode sheet 12 described above, and may have a function of holding an electrolytic solution. The separator 13 is a microporous film made of polyolefin such as polyethylene (PE) or polypropylene (PP), for example, and when an overcurrent flows, the pores of the film are blocked by the heat generation, thereby blocking the current. It also has. The separator 13 is not limited to a single-layer film such as polyolefin, but a three-layer structure in which a polypropylene layer is sandwiched between polyethylene layers, or a laminate of a polyolefin microporous film and an organic nonwoven fabric can also be used. By forming the separator 13 in multiple layers, various functions such as an overcurrent prevention function, an electrolyte holding function, and a separator shape maintenance (stiffness improvement) function can be provided.
また、セパレータ13と正極集電体112の積層面との間及びセパレータ13と負極集電体122の積層面との間には、後述する接着剤が塗布されることにより接着剤層14が形成される。接着剤層14は、正極集電体112の面上で、正極活性材111が形成されていない部分に形成され、正極集電体112の側面に沿って形成される。負極側についても同様に、接着剤層14は、負極集電体122の面上で、負極活性材121が形成されていない部分に形成され、負極集電体122の側面に沿って形成される。接着剤層14の材料には、例えばエポキシ系又はポリウレタン系の接着剤が用いられ、好ましくは硬度50以上(Type―D)のエポキシ系樹脂がよい。
Also, an adhesive layer 14 is formed between the separator 13 and the laminated surface of the positive electrode current collector 112 and between the separator 13 and the laminated surface of the negative electrode current collector 122 by applying an adhesive described later. Is done. The adhesive layer 14 is formed on the surface of the positive electrode current collector 112 at a portion where the positive electrode active material 111 is not formed, and is formed along the side surface of the positive electrode current collector 112. Similarly, on the negative electrode side, the adhesive layer 14 is formed on the surface of the negative electrode current collector 122 in a portion where the negative electrode active material 121 is not formed, and is formed along the side surface of the negative electrode current collector 122. . The material of the adhesive layer 14 is, for example, an epoxy-based or polyurethane-based adhesive, and preferably an epoxy-based resin having a hardness of 50 or higher (Type-D).
以上が本例の電池積層体1の構成であるが、薄型二次電池を組み立てるにあたり、図示は省略するが、複数の正極シート11の正極集電体112及び負極シート12の負極集電体122の一端はそれぞれ延長して集約され、正極タブ(正極端子)と負極タブ(負極端子)が接続される。そして、この電池積層体1を電池外装部材に収納し、有機液体溶媒に過塩素酸リチウム(LiClO4)、ホウフッ化リチウム(LiBF4)、六フッ化リン酸リチウム(LiPF6)、六フッ化砒素リチウム(LiAsF6)などのリチウム塩を溶質として溶解させた電解液を注入したのち、電池外装部材を封止することにより、薄型二次電池が完成する。
The above is the configuration of the battery stack 1 of this example. Although the illustration is omitted in assembling the thin secondary battery, the positive electrode current collector 112 of the positive electrode sheet 11 and the negative electrode current collector 122 of the negative electrode sheet 12 are omitted. One end of each is extended and collected, and a positive electrode tab (positive electrode terminal) and a negative electrode tab (negative electrode terminal) are connected. And this battery laminated body 1 is accommodated in a battery exterior member, and an organic liquid solvent is lithium perchlorate (LiClO 4 ), lithium borofluoride (LiBF 4 ), lithium hexafluorophosphate (LiPF 6 ), hexafluoride. A thin secondary battery is completed by injecting an electrolytic solution in which a lithium salt such as lithium arsenic (LiAsF 6 ) is dissolved as a solute and then sealing the battery exterior member.
次に、図2Aを参照しながら本例の電池積層体1の製造方法を説明する。図2Aは、正極シート11、負極シート12及びセパレータ13がそれぞれ作製され、これらが積層されるまでの製造工程を示し、図示は省略するが、この後工程として、接着剤層14の硬化工程と、積層された電池積層体1の切断工程と、切断された電池積層体1に電解液を注入する工程がある。
Next, a method for manufacturing the battery stack 1 of this example will be described with reference to FIG. 2A. FIG. 2A shows a manufacturing process until the positive electrode sheet 11, the negative electrode sheet 12, and the separator 13 are respectively produced and laminated, and illustration is omitted, but as a subsequent process, a curing process of the adhesive layer 14 and There are a cutting step of the stacked battery stack 1 and a step of injecting an electrolyte into the cut battery stack 1.
図2Aの正極作製工程では、正極集電体112の両面に正極活性材111を塗布し、これを乾燥機M1により乾燥させる。次の接着剤塗布工程では、ロータリースクリーン印刷機M2を用いて正極シート11の積層面に、接着剤層14を構成する接着剤を塗布する。後述するように、接着剤を含む面が切断面となるため、接着剤は、製造される積層電池の大きさに応じて、例えばマスク等を用いて、位置決めした状態で印刷する。本例では、1つの面から4つのセル面を作る工程であるため、電極タブを備える面を除く側面部分と、正極シート11の積層面の中心に対して十字ライン上に、接着剤を印刷する。なお、負極シート12についても同様である。そして、シート切断工程では、例えば4面付け単位で、ロールからシートへ、ロータリーカッターM3を用いて切断する。
2A, the positive electrode active material 111 is applied to both surfaces of the positive electrode current collector 112 and dried by the dryer M1. In the next adhesive application step, the adhesive constituting the adhesive layer 14 is applied to the laminated surface of the positive electrode sheet 11 using the rotary screen printing machine M2. As described later, since the surface including the adhesive becomes a cut surface, the adhesive is printed in a positioned state using, for example, a mask or the like according to the size of the laminated battery to be manufactured. In this example, since it is a process of making four cell surfaces from one surface, the adhesive is printed on the cross line with respect to the side surface portion excluding the surface including the electrode tab and the center of the laminated surface of the positive electrode sheet 11. To do. The same applies to the negative electrode sheet 12. In the sheet cutting step, the sheet is cut from a roll to a sheet using a rotary cutter M3, for example, in units of four sheets.
負極シート12についても同様に、負極作製工程にて、負極集電体122の両面に負極活性材121を塗布し、乾燥機M1によりこれを乾燥させる。次の接着剤塗布工程では、ロータリースクリーン印刷機M2を用いて負極シート12の積層面に、接着剤層14を構成する接着剤を塗布する。そして、シート切断工程では、例えば4面付け単位で、ロールからシートへ、ロータリーカッター(不図示)を用いて切断する。
Similarly, in the negative electrode preparation process, the negative electrode active material 121 is applied to both surfaces of the negative electrode current collector 122, and the negative electrode sheet 12 is dried by the dryer M1. In the next adhesive application step, the adhesive constituting the adhesive layer 14 is applied to the laminated surface of the negative electrode sheet 12 using the rotary screen printer M2. In the sheet cutting step, the sheet is cut from a roll to a sheet using a rotary cutter (not shown), for example, in units of four sheets.
セパレータ作製工程では、ロール状に巻回されたセパレータを引き出し、例えば4面付け単位で、ロールからシートへ、ロータリーカッター(不図示)を用いて切断する。
In the separator manufacturing step, the separator wound in a roll shape is pulled out, and is cut from a roll to a sheet using a rotary cutter (not shown), for example, in units of four faces.
なお本例では、正極シート11及び負極シート12の積層面に接着剤を塗布するが、セパレータ13の積層面に塗布してもよい。接着剤には、例えば熱可塑性のホットメルト材料が用いられる。また本例は、接着剤の代わりに、圧縮シール、ガスケットを用いてもよい。
In this example, the adhesive is applied to the laminated surface of the positive electrode sheet 11 and the negative electrode sheet 12, but may be applied to the laminated surface of the separator 13. For the adhesive, for example, a thermoplastic hot melt material is used. In this example, a compression seal or a gasket may be used instead of the adhesive.
次の積層工程では、正極製造ライン、負極製造ライン及びセパレータ製造ラインが合流し、切断工程で切断された、正極シート11、負極シート12及びセパレータ13が、積層スタッカM4に投入され、積層される。この際、それぞれの構成部材は、大まかに積層されてもよく、例えば積層精度±0.1~1.0mm程度で積層される。この積層工程によって、積層された正極シート11、負極シート12及びセパレータ層30を含む積層体が、本例の電池積層体1となる。
In the next lamination process, the positive electrode production line, the negative electrode production line, and the separator production line merge, and the positive electrode sheet 11, the negative electrode sheet 12, and the separator 13 cut in the cutting process are put into the lamination stacker M4 and laminated. . At this time, the respective constituent members may be roughly laminated, for example, with a lamination accuracy of about ± 0.1 to 1.0 mm. By this lamination step, the laminated body including the laminated positive electrode sheet 11, negative electrode sheet 12, and separator layer 30 becomes the battery laminated body 1 of this example.
なお、この後工程については図示を省略するが、電池積層体1は、硬化工程において連続炉に投入され、プレスされ熱硬化する。これにより、接着剤は接着剤層14となり、正極シート11とセパレータ13との間及び負極シート12とセパレータ13との間を接合する。そして、電池積層体1は、続く切断工程にて、クランプにより保持され、ダイアモンドカッターなどにより、電極シート11,12及びセパレータ13の積層方向に切断される。この際、電池積層体1は、接着剤層14を含む面を切断面として切断され、正極シート11、負極シート12及びセパレータ13が、当該切断面で切断される。これにより、電池積層体1は、4つの電池積層体に分割される。そして、正極集電体112及び負極集電体122のそれぞれに電極タブを接合した後に、切断後の電池積層体を吊して搬送しながら電解液槽に浸漬することで電解液を注液する。最後に、図示しない電池外装部材をラミネートすることで、本例の薄型電池が完成する。
In addition, although illustration is abbreviate | omitted about this post process, the battery laminated body 1 is thrown into a continuous furnace in a hardening process, is pressed, and is thermoset. As a result, the adhesive becomes the adhesive layer 14 and bonds between the positive electrode sheet 11 and the separator 13 and between the negative electrode sheet 12 and the separator 13. And the battery laminated body 1 is hold | maintained by a clamp at the subsequent cutting process, and is cut | disconnected by the diamond cutter etc. in the lamination direction of the electrode sheets 11 and 12 and the separator 13. FIG. At this time, the battery stack 1 is cut with the surface including the adhesive layer 14 as a cut surface, and the positive electrode sheet 11, the negative electrode sheet 12, and the separator 13 are cut along the cut surface. Thereby, the battery stack 1 is divided into four battery stacks. And after joining an electrode tab to each of the positive electrode current collector 112 and the negative electrode current collector 122, the electrolytic solution is injected by immersing it in the electrolytic solution tank while suspending and transporting the cut battery laminate. . Finally, a thin battery of this example is completed by laminating a battery exterior member (not shown).
さて、上述した図2Aのセパレータ作製工程では、ポリオレフィン系樹脂フィルム等で構成されたセパレータシート原材R1は、所定幅(上述した例では2つの単電池の幅に相当する長さ)のシートを中空状の芯材R2に巻いた荷姿で搬入され、このロール状セパレータシート原材R1を回転可能に保持した状態で、当該セパレータシート原材R1を引き出し(又は送り出し)、ロータリーカッターを用いて所定長さに切断する。図2Bは、このセパレータ作製工程を示す工程図であり、ロール状セパレータシート原材R1から引き出されたシート材Sは、複数のガイドローラGRによって切断工程に案内される。以下に説明する本例の保持装置2は、このセパレータ作製工程において、ロール状セパレータシート原材R1を回転可能に保持するものである。
In the separator manufacturing process of FIG. 2A described above, the separator sheet raw material R1 made of a polyolefin resin film or the like is a sheet having a predetermined width (a length corresponding to the width of two unit cells in the above example). Using the rotary cutter, the separator sheet raw material R1 is pulled out (or sent out) in a state where the roll-shaped separator sheet raw material R1 is rotatably held while being wound around the hollow core material R2. Cut to a predetermined length. FIG. 2B is a process diagram showing this separator manufacturing process, and the sheet material S drawn from the roll separator sheet raw material R1 is guided to the cutting process by a plurality of guide rollers GR. The holding device 2 of the present example described below holds the roll separator sheet raw material R1 in a rotatable manner in the separator manufacturing process.
図3は、本発明のロール状シート材の保持装置2の一実施の形態を示す斜視図であり、シート材Sがロール状に巻回され、中心軸CL1を含む軸方向に中空部R3を有するロール状シート材R1を回転可能に保持する保持装置2であって、基盤21に対して回転可能に支持され、中空部R3の内径D1よりも小さい外径D2を有し、中空部R3に挿入される保持軸22(保持軸22の回転中心軸はCL2)と、保持軸22の側面230に、位置固定に設けられた固定チャック部24と、保持軸22の、固定チャック部24が設けられた側面230以外の側面230に、保持軸22の径方向に前進移動及び後退移動可能に設けられた少なくとも2つの可動チャック部25,25と、少なくとも2つの可動チャック部25,25を前進移動及び進退移動させる駆動部26と、を備える。
FIG. 3 is a perspective view showing an embodiment of the roll sheet material holding device 2 according to the present invention, in which the sheet material S is wound in a roll shape, and the hollow portion R3 is formed in the axial direction including the central axis CL1. A holding device 2 that rotatably holds the roll-shaped sheet material R1 that has the outer diameter D2 that is rotatably supported by the base 21 and that is smaller than the inner diameter D1 of the hollow portion R3. The holding shaft 22 to be inserted (the rotation center axis of the holding shaft 22 is CL2), the fixed chuck portion 24 provided to fix the position on the side surface 230 of the holding shaft 22, and the fixed chuck portion 24 of the holding shaft 22 are provided. At least two movable chuck portions 25, 25 provided so as to be movable forward and backward in the radial direction of the holding shaft 22, and at least two movable chuck portions 25, 25 are moved forward on the side surfaces 230 other than the side surfaces 230. as well as It includes a drive unit 26 for retirement move, the.
図4は、図3のロール状シート材の保持装置2を示す側面図(図3のIV視)であり、基盤21は、セパレータ作製工程の床面などに載置される第1基盤211と、当該第1基盤211から立設された第2基盤212とを含み、第2基盤212に保持軸22と駆動部26が設けられている。
FIG. 4 is a side view (IV view of FIG. 3) showing the roll-shaped sheet material holding device 2 of FIG. 3, and the base 21 includes a first base 211 placed on the floor surface or the like in the separator manufacturing process. The second base 212 is provided with the holding shaft 22 and the drive unit 26. The second base 212 includes the second base 212 standing from the first base 211.
図5Aは、図3及び図4の保持装置2の保持軸22を示す断面図、図5Bは、図5AのVB-VB線に沿う模式的断面図である。図5Aに示すように、第2基盤212の上部には保持軸22が固定されている、本例の保持軸22は、第2基盤212に固定された外筒部221と、軸受223を介して外筒部221に対して回転可能に設けられた内筒部222とを含み、内筒部222の右端に保持軸本体224が固定されている。内筒部222の左端には歯車225が固定され、図示しないモータなどの駆動源に接続されることにより、内筒部222及び保持軸本体224が所定の回転速度で回転する。なお、内筒部222と保持軸本体224はフランジ継手226,226により固定され、このフランジ継手226がロール状シート材R1を装着したときの位置を定めることにもなる。
5A is a cross-sectional view showing the holding shaft 22 of the holding device 2 of FIGS. 3 and 4, and FIG. 5B is a schematic cross-sectional view taken along the line VB-VB of FIG. 5A. As shown in FIG. 5A, the holding shaft 22 is fixed to the upper portion of the second base 212. The holding shaft 22 of this example is connected to the outer cylinder portion 221 fixed to the second base 212 and the bearing 223. A holding shaft main body 224 is fixed to the right end of the inner cylindrical portion 222. The inner cylindrical portion 222 is rotatably provided with respect to the outer cylindrical portion 221. A gear 225 is fixed to the left end of the inner cylinder part 222 and connected to a drive source such as a motor (not shown), whereby the inner cylinder part 222 and the holding shaft main body 224 rotate at a predetermined rotational speed. The inner cylindrical portion 222 and the holding shaft main body 224 are fixed by flange joints 226 and 226, and the flange joint 226 also determines a position when the roll sheet material R1 is mounted.
内筒部222の中心及び保持軸本体224の中心には貫通孔227が連続して形成され、軸受228を介してピン229が挿入されている。ピン229の左端は後述する駆動部26に連結されて非回転とされているので、内筒部222は回転するがピン229は回転せずに、図5Aに実線で示す位置から二点鎖線で示す右方向へ移動する。これにより、可動チャック部25が保持軸22の径方向に前進及び後退移動する。
A through-hole 227 is continuously formed at the center of the inner cylindrical portion 222 and the center of the holding shaft main body 224, and a pin 229 is inserted through the bearing 228. Since the left end of the pin 229 is connected to the drive unit 26 described later and is non-rotating, the inner cylindrical portion 222 rotates but the pin 229 does not rotate, and is indicated by a two-dot chain line from the position indicated by the solid line in FIG. 5A. Move to the right. As a result, the movable chuck portion 25 moves forward and backward in the radial direction of the holding shaft 22.
すなわち、保持軸本体224の側面230の2箇所に開口部231が形成され、ここにリンク部材251の一端が回動軸252を中心にして回動可能に軸支され、他端にはピン229の先端に形成された円錐状のテーパ面232と摺動するローラ253が回動可能に設けられている。また、リンク部材251の回動軸252には、図5Aの実線で示す右回転方向に弾性付勢するコイルバネ等(不図示)が設けられ、ピン229が同図に示す実線の位置と二点鎖線の位置とを移動する場合に、テーパ面232とローラ253が常時接するようになっている。そして、リンク部材251の中央部には、チャック片254がその中央部の回動軸255を中心にして回動可能に軸支されている。
That is, openings 231 are formed at two locations on the side surface 230 of the holding shaft main body 224, and one end of the link member 251 is pivotally supported around the rotation shaft 252 and the other end is a pin 229. A roller 253 that slides with a conical tapered surface 232 formed at the tip of the roller is rotatably provided. Further, the rotating shaft 252 of the link member 251 is provided with a coil spring or the like (not shown) that is elastically biased in the right rotation direction shown by the solid line in FIG. 5A, and the pin 229 has two positions along the solid line shown in the figure. When moving the position of the chain line, the tapered surface 232 and the roller 253 are always in contact with each other. A chuck piece 254 is pivotally supported at the center of the link member 251 so as to be rotatable about a rotation shaft 255 at the center.
これにより、図5Aに示すピン229が実線の位置から二点鎖線の位置へ移動すると、ピン229の先端に形成されたテーパ面232に沿ってローラ253が摺動し、これによりリンク部材251が回動軸252を中心にして左回りに回動する。これにともなって、チャック片254が開口部231から前進(突出)する。このとき、チャック片254の右端が芯材R2の中空部R3の内面に最初に当接するが、回動軸255を中心に右回りに回動し、最終的にはチャック片254の前面が中空部R3の内面に当接することになる。なお、芯材R2の内径D1、保持軸本体224の外径D2とすると、チャック片254の前進寸法はD1-D2より所定寸法だけ大きい値とされ、これにより芯材R2の中空部R3の内面を押圧して保持することになる。
As a result, when the pin 229 shown in FIG. 5A moves from the position of the solid line to the position of the two-dot chain line, the roller 253 slides along the tapered surface 232 formed at the tip of the pin 229, thereby causing the link member 251 to move. It rotates counterclockwise around the rotation shaft 252. Along with this, the chuck piece 254 advances (projects) from the opening 231. At this time, the right end of the chuck piece 254 first comes into contact with the inner surface of the hollow portion R3 of the core member R2, but rotates clockwise around the rotation shaft 255, and finally the front surface of the chuck piece 254 is hollow. It will contact | abut to the inner surface of part R3. If the inner diameter D1 of the core material R2 and the outer diameter D2 of the holding shaft main body 224 are set, the advance dimension of the chuck piece 254 is set to a value larger than D1-D2 by a predetermined dimension, and thereby the inner surface of the hollow portion R3 of the core material R2 Will be held.
図5Aに示すピン229の左右方向への駆動は、図4に示すエアシリンダなどで構成されるアクチュエータ261とリンク機構262により行われる。すなわち、アクチュエータ261は第2基盤212に固定され、当該第2基盤を貫通して進退移動するロッド263に、回動軸264を中心に回動するリンク機構262の一端が連結され、当該リンク機構262の他端がピン229の基端に連結されている。これにより、アクチュエータ261が作動してロッド263が前進すると、図4に二点鎖線で示すようにリンク機構262を介してピン229が右方向へ移動し、ロッド263が後退すると、同図に実線で示すようにリンク機構262を介してピン229が左方向へ移動する。このアクチュエータ261によるロッド263の移動距離が、上述した図5Aに実線と二点鎖線で示すピン229の移動距離に相当する。
5A is driven by an actuator 261 and a link mechanism 262 configured by an air cylinder or the like shown in FIG. That is, the actuator 261 is fixed to the second base 212, and one end of a link mechanism 262 that rotates about the rotary shaft 264 is coupled to a rod 263 that moves forward and backward through the second base. The other end of 262 is connected to the base end of the pin 229. As a result, when the actuator 261 is actuated to advance the rod 263, the pin 229 moves to the right via the link mechanism 262 as shown by a two-dot chain line in FIG. 4, and when the rod 263 moves backward, the solid line in FIG. As shown by, the pin 229 moves to the left via the link mechanism 262. The movement distance of the rod 263 by the actuator 261 corresponds to the movement distance of the pin 229 indicated by the solid line and the two-dot chain line in FIG. 5A described above.
本例では、図5Bに示すように、上述した可動チャック部25が、保持軸本体224の円周方向において2箇所に設けられている。これに対して、固定チャック部24は1箇所に設けられ、1つの固定チャック部24と2つの可動チャック部25,25は、保持軸本体224の円周方向において等角度となる位置、すなわち隣接する互いの角度が120°となる位置に設けられている。なお本例の固定チャック部24は、保持軸本体224の側面230に位置固定に設けられたものであり、側面230から芯材R2の中空部R3の内径D1と保持軸本体224の外径D2との差D1-D2だけ突出した高さを有し、軸方向の長さは特に限定されないが、可動チャック部25のチャック片254の軸方向の長さと同等か又はそれより長く形成されている。固定チャック部24の表面は保持軸22の中心軸CL2に平行な面とされている。
In this example, as shown in FIG. 5B, the movable chuck portion 25 described above is provided at two locations in the circumferential direction of the holding shaft main body 224. On the other hand, the fixed chuck portion 24 is provided at one place, and the one fixed chuck portion 24 and the two movable chuck portions 25, 25 are positioned at an equal angle in the circumferential direction of the holding shaft body 224, that is, adjacent to each other. Are provided at a position where the mutual angle is 120 °. The fixed chuck portion 24 of this example is provided to be fixed to the side surface 230 of the holding shaft main body 224, and from the side surface 230, the inner diameter D1 of the hollow portion R3 of the core member R2 and the outer diameter D2 of the holding shaft main body 224. The height in the axial direction is not particularly limited, but is equal to or longer than the axial length of the chuck piece 254 of the movable chuck portion 25. . The surface of the fixed chuck portion 24 is a surface parallel to the central axis CL <b> 2 of the holding shaft 22.
次に作用を説明する。最初に、図6A及び図6Bを参照して、本発明の比較例に係る保持装置2を用いてロール状シート材R1を保持軸22に装着した場合の問題点を説明する。図6Aに示す比較例に係る保持装置2は、3つの可動チャック部25が保持軸22の保持軸本体224に等角度で設けられたものであり、図5Bに示す本例の保持装置2に対して固定チャック部24がなく、その代わりに可動チャック部25とされている点が相違する。なお、図6Aにおいて点線は芯材R2の中空部R3の内面を示している。
Next, the operation will be described. Initially, with reference to FIG. 6A and FIG. 6B, the problem at the time of mounting roll-shaped sheet material R1 on the holding shaft 22 using the holding | maintenance apparatus 2 which concerns on the comparative example of this invention is demonstrated. The holding device 2 according to the comparative example shown in FIG. 6A has three movable chuck portions 25 provided at equal angles on the holding shaft main body 224 of the holding shaft 22, and the holding device 2 of this example shown in FIG. On the other hand, there is no fixed chuck portion 24, and instead a movable chuck portion 25 is used. In addition, the dotted line in FIG. 6A has shown the inner surface of hollow part R3 of core material R2.
ロール状シート材R1を保持軸本体224に装着する場合、図6Aの上図に示すように3つの可動チャック部25のチャック片254を後退させた状態で芯材R2の中空部R3を保持軸本体224に挿入し、当該保持軸本体224に載置する。この状態から同図の下図に示すように3つの可動チャック部25のチャック片254を前進させることで芯材R2の中空部R3の内面をチャック片254で押圧し、これによりロール状シート材R1を保持軸22に保持するが、同図の上図の状態から下図の状態になる際に、保持軸本体224の上面に位置する可動チャック部25のチャック片254にはロール状シート材R1の重量が作用する。したがって、チャック片254が保持軸22の軸方向に沿って同じ寸法だけ前進しないと、図6Bの平面図に示すように保持軸22の中心軸CL2とロール状シート材R1の中心軸CL1が平行にならず捩れが生じることがある。そして、ねじれが生じた状態でシート材Sを巻き出すと、図6Bに示すようにガイドローラGR(特にテンションを付加するガイドローラGR)とロール状シート材R1との間のシート材Sの左右端部において張力の不均衡が生じ、これが皺の発生につながる。
When the roll-shaped sheet material R1 is mounted on the holding shaft main body 224, the hollow portion R3 of the core material R2 is held in the holding shaft with the chuck pieces 254 of the three movable chuck portions 25 retracted as shown in the upper diagram of FIG. 6A. It is inserted into the main body 224 and placed on the holding shaft main body 224. From this state, as shown in the lower drawing of the figure, the chuck pieces 254 of the three movable chuck portions 25 are advanced to press the inner surface of the hollow portion R3 of the core material R2 with the chuck pieces 254, and thereby the roll sheet material R1. Is held by the holding shaft 22, but when the state of the upper drawing of the drawing is changed to the state of the lower drawing, the chuck piece 254 of the movable chuck portion 25 located on the upper surface of the holding shaft main body 224 has the roll-shaped sheet material R 1. Weight acts. Therefore, if the chuck piece 254 does not advance by the same dimension along the axial direction of the holding shaft 22, the central axis CL2 of the holding shaft 22 and the central axis CL1 of the roll sheet material R1 are parallel as shown in the plan view of FIG. 6B. Otherwise, twisting may occur. Then, when the sheet material S is unwound in a state where twisting occurs, as shown in FIG. 6B, the left and right sides of the sheet material S between the guide roller GR (particularly, the guide roller GR that applies tension) and the roll-shaped sheet material R1. A tension imbalance occurs at the end, which leads to wrinkles.
これに対して、本例の保持装置2によれば、ロール状シート材R1を保持軸本体224に装着する場合、図7Aの上図に示すように固定チャック部24を鉛直方向の上面位置に回動させるとともに、2つの可動チャック部25のチャック片254を後退させた状態で芯材R2の中空部R3を保持軸本体224に挿入し、保持軸本体224の固定チャック部24に載置する。上述したとおり、固定チャック部24の表面は保持軸22の中心軸CL2に平行な面とされているので、ロール状シート材R1の自重によって保持軸本体224に載置すると、ロール状シート材R1は固定チャック部24の上面に沿って載置されることになる。これにより、ロール状シート材R1の中心軸CL1が保持軸22の中心軸CL2と平行になる。しかも、本例の固定チャック部24の上表面は、保持軸本体224の側面230から芯材R2の中空部R3の内径D1と保持軸本体224の外径D2との差D1-D2だけ突出した高さとされているので、図7Aの上図に示す状態で、ロール状シート材R1の中心軸CL1が保持軸22の中心軸CL2と平行になるだけでなく、偏芯することなく一致する。
On the other hand, according to the holding device 2 of this example, when the roll-shaped sheet material R1 is mounted on the holding shaft main body 224, the fixed chuck portion 24 is set to the upper surface position in the vertical direction as shown in the upper view of FIG. 7A. The hollow portion R3 of the core material R2 is inserted into the holding shaft main body 224 with the chuck pieces 254 of the two movable chuck portions 25 retracted, and placed on the fixed chuck portion 24 of the holding shaft main body 224. . As described above, since the surface of the fixed chuck portion 24 is a surface parallel to the central axis CL2 of the holding shaft 22, when it is placed on the holding shaft main body 224 by its own weight, the roll-shaped sheet material R1. Is placed along the upper surface of the fixed chuck portion 24. Thereby, the central axis CL1 of the roll-shaped sheet material R1 becomes parallel to the central axis CL2 of the holding shaft 22. In addition, the upper surface of the fixed chuck portion 24 of the present example protrudes from the side surface 230 of the holding shaft main body 224 by a difference D1-D2 between the inner diameter D1 of the hollow portion R3 of the core member R2 and the outer diameter D2 of the holding shaft main body 224. 7A, the center axis CL1 of the roll-shaped sheet material R1 not only becomes parallel to the center axis CL2 of the holding shaft 22, but also coincides without being eccentric.
そして、図7Aの上図の状態から同図の下図に示すように、2つの可動チャック部25のチャック片254を前進させることで芯材R2の中空部R3の内面をチャック片254で押圧し、これによりロール状シート材R1を保持軸22に保持する。これにより、シート材Sを巻き出すと、図7Bに示すようにガイドローラGR(特にテンションを付加するガイドローラGR)とロール状シート材R1との間のシート材Sの左右端部において張力が均衡し、皺の発生を抑制することができる。
7A, the inner surface of the hollow portion R3 of the core member R2 is pressed by the chuck piece 254 by moving the chuck pieces 254 of the two movable chuck portions 25 forward as shown in the lower figure of FIG. 7A. Thereby, the roll-shaped sheet material R <b> 1 is held on the holding shaft 22. As a result, when the sheet material S is unwound, as shown in FIG. 7B, tension is applied at the left and right ends of the sheet material S between the guide roller GR (particularly, the guide roller GR to which tension is applied) and the roll-shaped sheet material R1. Equilibrium and suppression of wrinkles can be suppressed.
上述した実施形態では、固定チャック部24の上表面を保持軸本体224の側面230から芯材R2の中空部R3の内径D1と保持軸本体224の外径D2との差D1-D2だけ突出した高さとしているが、保持軸本体224の側面230と面一な部分を固定チャック部24としてもよい。図8Aはこの例を示す断面図(図5Bに相当する断面図)であり、ロール状シート材R1を保持軸本体224に装着する場合、固定チャック部24を鉛直方向の上面位置に回動させるとともに、2つの可動チャック部25のチャック片254を後退させた状態で芯材R2の中空部R3を保持軸本体224に挿入し、保持軸本体224の固定チャック部24に載置する。図示する例では、固定チャック部24は保持軸本体224の側面230の一部で構成されているので、別部材を埋設する必要はなく、保持軸本体224の一部で構成すればよい。ただし、ロール状シート材R1を装着する場合、固定チャック部24の部分を保持軸本体224の鉛直方向の上面に回動させて、鉛直下側に等角度で2つの可動チャック部25,25を位置させる必要があるため、固定チャック部24にマーク等の目印を付与することが好ましい。
In the above-described embodiment, the upper surface of the fixed chuck portion 24 protrudes from the side surface 230 of the holding shaft main body 224 by the difference D1-D2 between the inner diameter D1 of the hollow portion R3 of the core member R2 and the outer diameter D2 of the holding shaft main body 224. Although the height is set, a portion flush with the side surface 230 of the holding shaft main body 224 may be used as the fixed chuck portion 24. FIG. 8A is a cross-sectional view showing this example (a cross-sectional view corresponding to FIG. 5B). When the roll-shaped sheet material R1 is mounted on the holding shaft main body 224, the fixed chuck portion 24 is rotated to the upper surface position in the vertical direction. At the same time, with the chuck pieces 254 of the two movable chuck portions 25 retracted, the hollow portion R3 of the core material R2 is inserted into the holding shaft main body 224 and placed on the fixed chuck portion 24 of the holding shaft main body 224. In the example shown in the figure, the fixed chuck portion 24 is configured by a part of the side surface 230 of the holding shaft main body 224, so that it is not necessary to bury another member, and it may be configured by a part of the holding shaft main body 224. However, when the roll-shaped sheet material R1 is mounted, the portion of the fixed chuck portion 24 is rotated to the upper surface in the vertical direction of the holding shaft main body 224 so that the two movable chuck portions 25 and 25 are equiangularly arranged on the lower side in the vertical direction. Since it needs to be positioned, it is preferable to provide a mark such as a mark on the fixed chuck portion 24.
図8Aに示す例によれば、2つの可動チャック部25のチャック片254を後退させた状態で芯材R2の中空部R3を保持軸本体224に挿入し、保持軸本体224の固定チャック部24に載置することで、ロール状シート材R1の中心軸CL1が保持軸22の中心軸CL2と平行になる。そして、この状態から2つの可動チャック部25のチャック片254を前進させることで芯材R2の中空部R3の内面をチャック片254で押圧し、これによりロール状シート材R1を保持軸22に保持する。これにより、ロール状シート材R1の中心軸CL1は保持軸22の中心軸CL2と偏芯するものの平行になるので、シート材Sを巻き出した際に、ガイドローラGR(特にテンションを付加するガイドローラGR)とロール状シート材R1との間のシート材Sの左右端部において張力が均衡し、皺の発生を抑制することができる。
8A, the hollow portion R3 of the core material R2 is inserted into the holding shaft main body 224 with the chuck pieces 254 of the two movable chuck portions 25 retracted, and the fixed chuck portion 24 of the holding shaft main body 224 is inserted. , The central axis CL1 of the roll-shaped sheet material R1 becomes parallel to the central axis CL2 of the holding shaft 22. Then, the chuck pieces 254 of the two movable chuck portions 25 are advanced from this state to press the inner surface of the hollow portion R3 of the core material R2 with the chuck pieces 254, thereby holding the roll sheet material R1 on the holding shaft 22. To do. As a result, the central axis CL1 of the roll-shaped sheet material R1 is parallel to the eccentric center axis CL2 of the holding shaft 22, so that when the sheet material S is unwound, the guide roller GR (especially a guide for applying tension). The tension is balanced at the left and right ends of the sheet material S between the roller GR) and the roll-shaped sheet material R1, and the generation of wrinkles can be suppressed.
さらに上述した実施形態では、1つの保持軸本体224に対して1つの固定チャック部24と2つの可動チャック部25を設けたが、1つの固定チャック部24と3つの可動チャック部25であってもよい。図8Bは図5Bの実施形態に対して可動チャック部25を3つにし、1つの固定チャック部24と3つの可動チャック部25を保持軸本体224の円周方向に等角度で配置した他例を示す。また、図8Cは図8Aの実施形態に対して可動チャック部25を3つにし、1つの固定チャック部24と3つの可動チャック部25を保持軸本体224の円周方向に等角度で配置した他例を示す。
Further, in the above-described embodiment, one fixed chuck portion 24 and two movable chuck portions 25 are provided for one holding shaft main body 224. However, one fixed chuck portion 24 and three movable chuck portions 25 are provided. Also good. 8B shows another example in which three movable chuck portions 25 are provided in the embodiment of FIG. 5B, and one fixed chuck portion 24 and three movable chuck portions 25 are arranged at an equal angle in the circumferential direction of the holding shaft main body 224. Indicates. 8C has three movable chuck portions 25 with respect to the embodiment of FIG. 8A, and one fixed chuck portion 24 and three movable chuck portions 25 are arranged at equal angles in the circumferential direction of the holding shaft main body 224. Another example is shown.
いずれの例においても、ロール状シート材R1を保持軸本体224に装着する場合、固定チャック部24を鉛直方向の上面位置に回動させるとともに、3つの可動チャック部25のチャック片254を後退させた状態で芯材R2の中空部R3を保持軸本体224に挿入し、保持軸本体224の固定チャック部24に載置することで、ロール状シート材R1の中心軸CL1が保持軸22の中心軸CL2と平行になる。これにより、シート材Sを巻き出した際に、ガイドローラGR(特にテンションを付加するガイドローラGR)とロール状シート材R1との間のシート材Sの左右端部において張力が均衡し、皺の発生を抑制することができる。
In any example, when the roll-shaped sheet material R1 is mounted on the holding shaft main body 224, the fixed chuck portion 24 is rotated to the upper surface position in the vertical direction and the chuck pieces 254 of the three movable chuck portions 25 are retracted. In this state, the hollow portion R3 of the core material R2 is inserted into the holding shaft main body 224 and placed on the fixed chuck portion 24 of the holding shaft main body 224, whereby the central axis CL1 of the roll-shaped sheet material R1 is the center of the holding shaft 22. It becomes parallel to the axis CL2. As a result, when the sheet material S is unwound, the tension is balanced at the left and right ends of the sheet material S between the guide roller GR (particularly the guide roller GR to which tension is applied) and the roll-shaped sheet material R1. Can be suppressed.
上記テーパ面232は本発明に係る第1カム面に相当し、上記ローラ253は本発明に係る第2カム面に相当する。
The tapered surface 232 corresponds to the first cam surface according to the present invention, and the roller 253 corresponds to the second cam surface according to the present invention.
1…電池積層体
11…正極シート
111…正極活性材
112…正極集電体
12…負極シート
121…負極活性材
122…負極集電体
13…セパレータ
14…接着剤層
M1…乾燥機
M2…ロータリースクリーン印刷機
M3…ロータリーカッター
M4…積層スタッカ
R1…ロール状セパレータシート原材
R2…芯材
R3…中空部
D1…中空部の内径
CL1…ロール状セパレータ原材の中心軸
S…シート材
GR…ガイドローラ
2…保持装置
21…基盤
211…第1基盤
212…第2基盤
22…保持軸
221…外筒部
222…内筒部
223…軸受
224…保持軸本体
225…歯車
226…フランジ継手
227…貫通孔
228…軸受
229…ピン
230…保持軸の側面
231…開口部
232…テーパ面(第1カム面)
D2…保持軸の外径
CL2…保持軸の中心軸
24…固定チャック部
25…可動チャック部
251…リンク部材
252…回動軸
253…ローラ(第2カム面)
254…チャック片
255…回動軸
26…駆動部
261…アクチュエータ
262…リンク機構
263…ロッド
264…回動軸 DESCRIPTION OFSYMBOLS 1 ... Battery laminated body 11 ... Positive electrode sheet 111 ... Positive electrode active material 112 ... Positive electrode collector 12 ... Negative electrode sheet 121 ... Negative electrode active material 122 ... Negative electrode collector 13 ... Separator 14 ... Adhesive layer M1 ... Dryer M2 ... Rotary Screen printing machine M3 ... Rotary cutter M4 ... Stacking stacker R1 ... Roll separator sheet raw material R2 ... Core material R3 ... Hollow portion D1 ... Hollow portion inner diameter CL1 ... Central axis S of roll separator raw material ... Sheet material GR ... Guide Roller 2 ... Holding device 21 ... Base 211 ... First base 212 ... Second base 22 ... Holding shaft 221 ... Outer cylindrical portion 222 ... Inner cylindrical portion 223 ... Bearing 224 ... Holding shaft main body 225 ... Gear 226 ... Flange joint 227 ... Through Hole 228 ... Bearing 229 ... Pin 230 ... Side surface of holding shaft 231 ... Opening 232 ... Tapered surface (first cam surface)
D2 ... Outer diameter of holding shaft CL2 ... Center axis of holdingshaft 24 ... Fixed chuck portion 25 ... Movable chuck portion 251 ... Link member 252 ... Rotating shaft 253 ... Roller (second cam surface)
254:Chuck piece 255 ... Rotating shaft 26 ... Drive unit 261 ... Actuator 262 ... Link mechanism 263 ... Rod 264 ... Rotating shaft
11…正極シート
111…正極活性材
112…正極集電体
12…負極シート
121…負極活性材
122…負極集電体
13…セパレータ
14…接着剤層
M1…乾燥機
M2…ロータリースクリーン印刷機
M3…ロータリーカッター
M4…積層スタッカ
R1…ロール状セパレータシート原材
R2…芯材
R3…中空部
D1…中空部の内径
CL1…ロール状セパレータ原材の中心軸
S…シート材
GR…ガイドローラ
2…保持装置
21…基盤
211…第1基盤
212…第2基盤
22…保持軸
221…外筒部
222…内筒部
223…軸受
224…保持軸本体
225…歯車
226…フランジ継手
227…貫通孔
228…軸受
229…ピン
230…保持軸の側面
231…開口部
232…テーパ面(第1カム面)
D2…保持軸の外径
CL2…保持軸の中心軸
24…固定チャック部
25…可動チャック部
251…リンク部材
252…回動軸
253…ローラ(第2カム面)
254…チャック片
255…回動軸
26…駆動部
261…アクチュエータ
262…リンク機構
263…ロッド
264…回動軸 DESCRIPTION OF
D2 ... Outer diameter of holding shaft CL2 ... Center axis of holding
254:
Claims (9)
- シート材がロール状に巻回され、中心軸を含む軸方向に中空部を有するロール状シート材を回転可能に保持する保持装置において、
基盤に対して回転可能に支持され、前記中空部の内径よりも小さい外径を有し、前記中空部に挿入される保持軸と、
前記保持軸の側面に、位置固定に設けられた固定チャック部と、
前記保持軸の、前記固定チャック部が設けられた側面以外の側面に、前記保持軸の径方向に前進移動及び後退移動可能に設けられた少なくとも2つの可動チャック部と、
前記少なくとも2つの可動チャック部を前進移動及び進退移動させる駆動部と、を備えるロール状シート材の保持装置。 In the holding device in which the sheet material is wound in a roll shape and rotatably holds the roll sheet material having a hollow portion in the axial direction including the central axis,
A holding shaft that is rotatably supported with respect to the base, has an outer diameter smaller than the inner diameter of the hollow portion, and is inserted into the hollow portion;
A fixed chuck portion provided at a fixed position on a side surface of the holding shaft;
At least two movable chuck portions provided on the side surface of the holding shaft other than the side surface on which the fixed chuck portion is provided so as to be capable of moving forward and backward in the radial direction of the holding shaft;
A roll-shaped sheet material holding device comprising: a drive unit that moves the at least two movable chuck units forward and backward. - 前記固定チャック部と前記少なくとも2つの可動チャック部は、前記保持軸の円周方向に等角度で設けられている請求項1に記載のロール状シート材の保持装置。 The roll-shaped sheet material holding device according to claim 1, wherein the fixed chuck portion and the at least two movable chuck portions are provided at an equal angle in a circumferential direction of the holding shaft.
- 前記固定チャック部と2つの可動チャック部とが、前記保持軸の円周方向に等角度で設けられている請求項2に記載のロール状シート材の保持装置。 The roll sheet material holding device according to claim 2, wherein the fixed chuck portion and the two movable chuck portions are provided at an equal angle in a circumferential direction of the holding shaft.
- 前記固定チャック部は、前記保持軸の側面から径方向に突出して設けられている請求項1~3のいずれか一項に記載のロール状シート材の保持装置。 The roll-shaped sheet material holding device according to any one of claims 1 to 3, wherein the fixed chuck portion is provided so as to protrude in a radial direction from a side surface of the holding shaft.
- 前記固定チャック部の上表面は、前記中空部の内径と前記保持軸の外径との差だけ、前記保持軸の側面から径方向に突出して設けられている請求項4に記載のロール状シート材の保持装置。 The roll-shaped sheet according to claim 4, wherein the upper surface of the fixed chuck portion is provided to project radially from the side surface of the holding shaft by a difference between the inner diameter of the hollow portion and the outer diameter of the holding shaft. Material holding device.
- 前記固定チャック部は、前記保持軸の側面の一部である請求項1~3のいずれか一項に記載のロール状シート材の保持装置。 The roll sheet material holding device according to any one of claims 1 to 3, wherein the fixed chuck portion is a part of a side surface of the holding shaft.
- 前記駆動部は、
前記保持軸内に、軸方向に移動可能に設けられ、第1カム面を有するピンと、
前記ピンを前記軸方向に前進及び後退移動させるアクチュエータと、
前記保持軸に回動可能に装着されるとともに前記可動チャック部を回動可能に支持し、前記第1カム面と係合する第2カム面を有するリンク部材と、を有し、
前記ピンの前進及び後退移動にともない前記第1カム面と前記第2カム面が係合して、前記リンク部材が回動し、前記可動チャック部が前進移動及び後退移動する請求項1~6のいずれか一項に記載のロール状シート材の保持装置。 The drive unit is
A pin provided in the holding shaft so as to be movable in the axial direction and having a first cam surface;
An actuator for moving the pin forward and backward in the axial direction;
A link member that is rotatably attached to the holding shaft and that rotatably supports the movable chuck portion and has a second cam surface that engages with the first cam surface;
The first cam surface and the second cam surface are engaged with each other as the pin moves forward and backward, the link member rotates, and the movable chuck portion moves forward and backward. The holding | maintenance apparatus of the roll-shaped sheet material as described in any one of these. - 前記ロール状シート材を前記保持軸に装着する場合に、
前記少なくとも2つの可動チャック部が後退位置にあるとともに、前記固定チャック部が前記保持軸の鉛直方向の上面位置にある状態で、前記保持軸に前記ロール状シート材の前記中空部を挿入して載置したのち、
前記少なくとも2つの可動チャック部を前進位置に移動させて前記中空部を押圧し、前記ロール状シート材を前記保持軸に固定する請求項1~7のいずれか一項に記載のロール状シート材の保持装置。 When mounting the roll-shaped sheet material on the holding shaft,
While the at least two movable chuck portions are in the retracted position and the fixed chuck portion is in the upper surface position in the vertical direction of the holding shaft, the hollow portion of the roll-shaped sheet material is inserted into the holding shaft. After placing
The roll-shaped sheet material according to any one of claims 1 to 7, wherein the roll-shaped sheet material is fixed to the holding shaft by moving the at least two movable chuck portions to an advance position to press the hollow portion. Holding device. - 二次電池の電池積層体を構成するセパレータの原材がロール状に巻回され、中心軸を含む軸方向に中空部を有するロール状セパレータ原材を、前記中空部の内径より小さい外径の保持軸に回転可能に保持し、これを順次引き出す第1工程と、
前記引き出されたセパレータの両面それぞれに、正極シートと負極シートを積層する第2工程と、を有する電池積層体の製造方法において、
前記第1工程は、
前記ロール状セパレータ原材を前記保持軸に回転可能に保持する際に、
前記保持軸に前記ロール状セパレータ原材の前記中空部を挿入して載置したのち、
前記保持軸の外面と前記中空部の内面との間に形成された隙間のうち、少なくとも中心から鉛直下側の前記中空部の2箇所を押圧し、前記保持軸に前記ロール状セパレータ原材を固定する工程を含む電池積層体の製造方法。 The separator raw material constituting the battery stack of the secondary battery is wound in a roll shape, and the roll separator raw material having a hollow portion in the axial direction including the central axis is made to have an outer diameter smaller than the inner diameter of the hollow portion. A first step of rotatably holding the holding shaft and sequentially pulling it out;
In the method for producing a battery laminate having a second step of laminating a positive electrode sheet and a negative electrode sheet on each of both surfaces of the drawn separator,
The first step includes
When holding the roll separator raw material rotatably on the holding shaft,
After inserting and placing the hollow part of the roll separator raw material on the holding shaft,
Of the gap formed between the outer surface of the holding shaft and the inner surface of the hollow portion, at least two portions of the hollow portion vertically below from the center are pressed, and the roll separator raw material is applied to the holding shaft. The manufacturing method of a battery laminated body including the process to fix.
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CN113921748A (en) * | 2021-10-11 | 2022-01-11 | 张慧 | Be applied to roll-shaped substrate raw materials drop feed mechanism of lithium cell electrode sheet preparation |
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CN113921748A (en) * | 2021-10-11 | 2022-01-11 | 张慧 | Be applied to roll-shaped substrate raw materials drop feed mechanism of lithium cell electrode sheet preparation |
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JP6451740B2 (en) | 2019-01-16 |
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