JP6063330B2 - Winding core and winding element manufacturing method - Google Patents

Description

  The present invention relates to a winding core for manufacturing a winding element for forming a battery or a capacitor, and a winding element manufacturing method using the winding core.

  Conventionally, a strip-shaped positive electrode, negative electrode and separator are wound around a core, and the wound winding element is immersed in an electrolytic solution so that the electrolytic solution is immersed between the separator and the positive and negative electrodes. Batteries have been manufactured. In FIG. 11, reference numeral 120 denotes a winding element that winds the positive electrode 100, the first separator 102, the negative electrode 104, and the second separator 106 sent from the raw fabrics 112, 114, 116, and 118 to the core 108. It is a manufacturing device. As shown in FIG. 12, the winding element manufacturing apparatus 120 can manufacture the winding element 109 by winding the positive electrode 100 and the like. Various wound device manufacturing apparatuses have been invented and filed by the applicant of the present application (see Patent Documents 1 to 8).

  As shown in FIG. 13A, the winding core 108 has a fixed portion 111 fixed to a rotating jig (not shown), and an outer peripheral surface that winds the belt-like positive electrode 100, separator 102, negative electrode 104, and separator 106. The core body part 122 which has 120, and the clearance gap 113 which inserts the vicinity of the front-end | tip of the separators 102 and 106 are comprised. The winding core 108 is fixed to a fixing jig, and as shown in FIG. 13B, the vicinity of the tips of the separators 102 and 106 is inserted into the gap 113, and the positive electrode 100 is laminated on the separator 102. A negative electrode 104 is laminated between the 106. Thereafter, the winding core 108 is manually rotated a plurality of times, and the separator 102 and the like are wound, whereby a frictional force is applied to the positive electrode 100 and the separator 102 and the like, and then the winding jig is rotated by the rotational driving of the rotating jig. A rotating element 109 is manufactured.

  The winding core 108 is extracted from the winding element 109 after the winding element 109 is manufactured by winding the positive electrode 100, the separator 102, the negative electrode 104, and the separator 106. However, when the winding core 108 is pulled out from the winding element 109, the outer peripheral surface 120 of the winding core part 122 is in contact with the inner peripheral surface 115 of the winding element 109. Due to the frictional force, as shown in FIG. 13C, the winding core 108 may be deformed by drawing the center side of the winding element 109 into a bowl shape. For this reason, an operation for correcting the shape of the winding element 109 may be required.

JP 2004-127860 A JP 2009-043540 A JP 2009-093901 A JP 2009-256022 A JP 2009-272245 A JP 2011-161557 A JP 2011-184132 A International Publication No. 2009/019781

  The object of the present invention is to manufacture the winding element and then pull out the winding core from the winding element, so that the outer peripheral surface of the winding core body comes into contact with the inner peripheral surface of the winding element and the winding core It is an object of the present invention to provide a winding core and a winding element manufacturing method that is not deformed into a bowl shape.

The winding core of the present invention is attached to a rotating jig of a winding device and rotated around the rotation center axis, thereby forming a belt-like positive electrode, a belt-like first separator, a belt-like negative electrode, and a belt-like second separator. Is a winding core for manufacturing a wound element by winding
A clamp that clamps or releases at least the vicinity of the tips of the first separator and the second separator;
A winding core having a hollow part for inserting the clamp, and having an outer peripheral surface for winding the positive electrode, the first separator, the negative electrode, and the second separator;
With a separate body,
The winding core body includes a first winding member and a second winding member facing each other, the first winding member is fixed to the fixing member, and the second winding member is connected to the rotation center shaft. It is possible to slide in the cross-sectional direction and be separated from the first winding member,
In a state where the clamp is inserted into the hollow portion and sandwiches the vicinity of the tips of the first separator and the second separator, the first winding member and the second winding member are brought close to each other, and the winding core The outer peripheral surface of the body is separated from the inner peripheral surface of the winding element, and the core body can be extracted from the winding element.

  Further, in the core of the present invention, in the core, after the core body is extracted from the winding element in a state where the core body is separated from the inner peripheral surface of the winding element, The clamp is extracted from the winding element in a state in which the clamping of the vicinity of the first separator and the second separator by the clamp is released.

In the winding element manufacturing method of the present invention, the winding element is used to wind the band-shaped positive electrode, the band-shaped first separator, the band-shaped negative electrode, and the band-shaped second separator to wind the winding element. Is a wound element manufacturing method for manufacturing
Sandwiching at least the vicinity of the first separator and the second separator by the clamp; and
Winding the positive electrode, the first separator, the negative electrode, and the second separator by rotating the winding core around a rotation center axis, and forming a winding element;
Causing the first winding member and the second winding member to approach each other and separating the outer peripheral surface of the winding core from the inner peripheral surface of the winding element;
Extracting the core from the winding element;
Releasing the vicinity of the tip of the first separator and the second separator by the clamp; and
Extracting the clamp from within the winding element;
It is characterized by including.

  The winding element manufacturing method of the present invention is the winding element manufacturing method according to the above-described winding element manufacturing method, in a state where the core body is separated from the inner peripheral surface of the winding element. After being extracted from the winding element, the clamp is extracted from the winding element in a state in which the clamping of the first separator and the second separator by the clamp is released.

  According to the core and the winding element manufacturing method of the present invention, the core body is in a state where the first winding member and the second winding member are brought close to each other and separated from the inner peripheral surface of the winding element. Can be extracted from the winding element. For this reason, when the winding core body is pulled out from the winding element, the outer peripheral surface of the winding core body does not contact the inner peripheral surface of the winding element, so the winding core body is deformed by pulling the center side of the winding element into a hook shape. There is no need to perform a work for correcting the shape of the winding element. In addition, the core body can be extracted from the winding element in a state where the clamps sandwich the vicinity of the tips of the first separator and the second separator. Here, the inner peripheral surface of the winding element is constituted by a portion adjacent to the vicinity of the tip of the first separator held by the clamp. For this reason, even when the outer peripheral surface of the winding core is in contact with the inner peripheral surface of the winding element when the winding core is extracted from the winding element, the inner peripheral surface of the winding element is not displaced and the winding element is not displaced. The center side of is not pulled out like a bowl.

FIG. 2A is a front cross-sectional end view showing the core according to the present invention, and FIG. 1B is a front cross-sectional end view showing the use state of the core according to the present invention. It is a front cross-sectional end view which shows the use condition of the core of FIG. It is a front cross-sectional end view which shows the use condition of the core of FIG. It is a front cross-sectional end view which shows the use condition of the core of FIG. It is side surface sectional drawing which shows the Example of the core of this invention. It is a front view which shows the winding core of FIG. FIG. 6 is a side view showing a first winding member and a second winding member of the core of FIG. 5. It is a front view which shows the winding apparatus which attached the winding core of FIG. It is a front view which shows the use condition of the core of FIG. It is a front view which shows the use condition of the core of FIG. It is a front view which shows the conventional winding element manufacturing apparatus. It is an enlarged front view which shows the use condition of the winding element manufacturing apparatus of FIG. It is a figure which shows the conventional core used for the winding element manufacturing apparatus of FIG. 11, the figure (a) is a side view, the figure (b) is a front view which shows a use condition, c) is a side view showing a use state.

  An embodiment of a winding core and a winding element manufacturing method according to the present invention will be described based on the drawings. 1-4, the code | symbol 10 is the core which concerns on this invention.

  As shown in FIG. 2 (b), the winding core 10 according to the present invention rotates around a rotation center axis C, thereby forming a belt-like positive electrode 12, a belt-like first separator 14, a belt-like negative electrode 16, And a winding core for manufacturing the winding element 28 by winding the belt-like second separator 18. As shown in FIG. 1A, the winding core 10 includes a fixing member 11 that is fixed to a rotating jig (not shown), a clamp 26 that clamps or releases the vicinity of the tips of the first separator 14 and the second separator 18, A winding core body 22 having a hollow portion 24 into which the clamp 26 is inserted and having an outer peripheral surface 20 for winding the positive electrode 12, the first separator 14, the negative electrode 16, and the second separator 18, is provided separately. ing. The winding core 22 is composed of a first winding member 30 (a) and a second winding member 30 (b) facing each other, and a clamp 26 is inserted into the hollow portion 24 so that the first separator 14 and the second separator In the state where the vicinity of the tip of 18 is clamped, the first winding member 30 (a) and the second winding member 30 (b) are brought close to each other so that the outer peripheral surface 20 of the winding core body 22 is within the winding element 28. The core body 22 can be extracted from the winding element 28 while being separated from the peripheral surface 29.

  As shown in FIG. 1 (a), the core body 22 includes a first winding member 30 (a) and a second winding member 30 (b) that face each other, and the first winding member 30 (a ) Is fixed to a fixing member (not shown), and the second winding member 30 (b) can slide away from the first winding member 30 (a) by sliding in the cross-sectional direction of the rotation center axis C. FIG. As shown to (a), the winding core body 22 whole is wound by making the 1st winding member 30 (a) and the 2nd winding member 30 (b) slide along the groove | channel 33, and mutually approach. The outer peripheral surface 20 can be separated from the inner peripheral surface 29 of the winding element 28 by shrinking in the element 28. The first winding member 30 (a) and the second winding member 30 (b) are configured separately.

  As shown in FIG. 1A, the clamp 26 includes a first clamping member 32 (a) and a second clamping member 32 (b) facing each other. As shown in FIG. By holding the holding member 32 (a) and the second holding member 32 (b) apart, the holding of the first separator 14 and the second separator 18 can be released. The 1st clamping member 32 (a) and the 2nd clamping member 32 (b) are comprised separately.

  In the winding element manufacturing method according to the present invention, the winding element 10 is used to wind the positive electrode 12, the first separator 14, the negative electrode 16, and the second separator 18 to manufacture the winding element 28. And a step of clamping at least the vicinity of the tips of the first separator 14 and the second separator 18 by the clamp 26 and rotating the winding core 10 around the rotation center axis C, 12, winding the first separator 14, the negative electrode 16, and the second separator 18 to form a winding element 28; a first winding member 30 (a) and a second winding member 30 (b) , The step of separating the outer peripheral surface 20 of the winding core body 22 from the inner peripheral surface 29 of the winding element 28, the step of extracting the winding core body 22 from the winding element 28, and the clamp 26 And releasing the holding of the vicinity of the distal end of the first separator 14 and second separator 18 by a winding device manufacturing method comprising the steps of: extracting the clamp 26 from the winding device inside 28.

  The operation and effect of the winding core 10 and the winding element manufacturing method will be described below.

  For example, in a state where the winding core 10 is attached to a conventional winding element manufacturing apparatus 120 as shown in FIG. 13, as shown in FIG. 1 (b), the first separator 14 and the second separator 18 are clamped by the clamp 26. The vicinity of the tip is pinched. Thereafter, the clamp 26 is inserted into the hollow portion 24 of the core body 22.

  Next, as shown in FIG. 2A, the positive electrode 12 is stacked on the first separator 14, the negative electrode 16 is stacked between the first separator 14 and the second separator 18, and the core 10 is rotated a plurality of times. As shown in FIG. 2B, the positive electrode 12, the first separator 14, and the first separator 14 are rotated manually to apply a frictional force to the positive electrode 12, the first separator 14, and the like. The negative electrode 16 and the second separator 18 are wound while being laminated.

  When the winding is completed and the winding element 28 is formed, the clamp 26 is taken out from the hollow portion 24, and as shown in FIG. 3A, the first winding member 30 (a) and the second winding The outer circumferential surface 20 of the winding core body 22 is separated from the inner circumferential surface 29 of the winding element 28 by bringing the winding member 30 (b) closer and shrinking the winding core body 22.

  When the core body 22 is extracted from the winding element 28 in a state where the outer peripheral surface 20 is separated from the inner peripheral surface 29, the state shown in FIG. When the core body 22 is extracted from the winding element 28, the outer peripheral surface 20 is separated from the inner peripheral surface 29. Therefore, the core body 22 can be deformed by drawing the center side of the winding element 28 into a hook shape. In addition, there is no need for work for correcting the shape of the winding element 28. Furthermore, the core body 22 can be extracted from the winding element 28 with the clamp 26 sandwiching the vicinity of the tips of the first separator 14 and the second separator 18. For this reason, even when the outer peripheral surface 20 of the winding core 22 contacts the inner peripheral surface 29 of the winding element 28 when the winding core 22 is extracted from the winding element 28, the inner peripheral surface 29 of the winding element 28. The center side of the winding element 28 is not pulled out like a bowl without shifting. Here, the inner peripheral surface 29 of the winding element 28 is constituted by a portion adjacent to the vicinity of the tip of the first separator 14 held by the clamp 26.

  Next, as shown to Fig.4 (a), the 1st clamping member 32 (a) and the 2nd clamping member 32 (b) are spaced apart. When the first clamping member 32 (a) and the second clamping member 32 (b) are separated from each other, the clamping of the first separator 14 and the vicinity of the second separator 18 by the clamp 26 is released. When the clamp 26 is pulled out from the winding element 28 in the state where the vicinity of the tips of the first separator 14 and the second separator 18 is released, the winding element 28 becomes a state shown in FIG.

  Next, the positive electrode 12 and the negative electrode 16 are separated from the portion where the winding element 28 is formed by a cutter, and the portion where the winding element 28 is formed is pasted with an adhesive tape in the winding element manufacturing apparatus, The battery is manufactured by being transferred from the wound element manufacturing apparatus to the next step and processed into a cylindrical shape as it is or a predetermined shape such as a prism, and then put into a metal case or laminate pack.

  The configuration of the first embodiment of the core of the present invention is indicated by reference numeral 210 in FIGS. As shown in FIGS. 5 and 6, the winding core 210 according to the present invention has a rotation center axis C and is attached to the rotation jig 214 of the winding unit 212 of FIG. Thus, the winding element 224 is manufactured by winding the belt-like positive electrode 216, the belt-like first separator 218, the belt-like negative electrode 220, and the belt-like second separator 222. 5 and 6 omit the description of the winding element 224 in order to show the configuration.

  As shown in FIGS. 5 and 6, the winding core 210 extends in parallel with the fixing member 226 fixed to the rotating jig 214 of FIG. 5 and the rotation center axis C, and has a front end 230 (a) and a rear end 230 ( b), a first winding member 230 having a rear end 230 (b) fixed to the fixing member 226 and having a first groove 228 parallel to the rotation center axis C, and extending parallel to the rotation center axis C. A second winding member 234 having a second groove 232 having a front end 234 (a) and a rear end 234 (b), parallel to the rotation center axis C and facing the first groove 228; A first clamping member 238 that extends in parallel with the axis C, has a front end 236 (a) and a rear end 236 (b), is inserted into the second groove 232, and extends in parallel with the rotation center axis C. A second clamping member 236 having (a) and a rear end 238 (b) and inserted into the first groove 228; It includes a connecting sliding member 40 for connecting two wound member 234, a.

  Moreover, the 1st winding member 230 and the 2nd winding member 234 comprise a winding core body, and the 1st clamping member 238 and the 2nd clamping member 236 comprise a clamp. 5 shows a state in which the first clamping member 238 and the second clamping member 236 are extracted from the first winding member 230 and the second winding member 234, and FIG. 6 shows the first clamping member 238 and the second clamping member 234. The state which inserted the clamping member 236 in the 1st winding member 230 and the 2nd winding member 234 is shown.

  As shown in FIGS. 6 and 7, the fixing member 226 has a hollow portion 227, and the hollow portion 227 has a Z-axis direction perpendicular to the rotation center axis C (the first winding member 230 and the second winding member). The connecting sliding member 240 has an engagement hole 244 into which the sliding pin 242 is inserted, and the connecting sliding member 240 is the fixing member 226. The sliding pin 242 can slide in the Z-axis direction. The connecting sliding member 240 is given a biasing force to slide in the direction D1 (one direction, negative Z-axis direction) by the compression spring 246.

  As shown in FIGS. 6 and 7, the first winding member 230 has a connecting portion 248 that is continuous with the rear end 230 (b), and the connecting portion 248 is fixed to the hollow portion 227 of the fixing member 226. . Further, as shown in FIG. 6, the first winding member 230 has a semicircular cross section, has a first groove 228 at the center of the semicircle, and the first groove 228 has a first sandwiched portion. Member 238 is inserted.

  As shown in FIGS. 6 and 7, the second winding member 234 has a connecting portion 250 continuous to the rear end 234 (b), and the connecting portion 250 is fixed to the connecting sliding member 240. Further, as shown in FIG. 6, the second winding member 34 has a semicircular cross section, has a second groove 232 at the center of the semicircle, and the second groove 232 has a second sandwiched portion. Member 236 is inserted. Protrusions 254 supported by the rotation support 252 shown in FIG. 5 are provided at the distal end 230 (a) of the first winding member 230 and the distal end 234 (a) of the second winding member 234. In addition, the rotation support tool 252 is fixed to the front panel 213 via a frame (not shown), and rotatably supports the core 210.

  As shown in FIGS. 6 and 7, the connecting sliding member 240 moves the engagement pin 264 extending in the direction of the rotation center axis C in the X-axis direction (direction of the rotation center axis C). It has the engaged part 261 which engages. The engaged portion 261 has a tapered portion 265, and the winding core 210 engages the sharpened portion 267 of the engaging pin 264 with the tapered portion 265, and the engaging pin 264 connects the engaged portion 261 with the Z axis positive. By moving in the direction, the connecting sliding member 240 slides in the positive Z-axis direction with respect to the fixed member 226, and the first winding member 230 and the second winding member 234 are separated from each other. ing.

  Accordingly, the first winding member 230 and the second winding member 234 are moved by sliding the connecting sliding member 240 in the direction D1 (one direction, negative Z-axis direction) with respect to the sliding pin 242. And the connecting sliding member 40 is slid with respect to the sliding pin 42 in the direction D2 opposite to the direction D1 (the direction opposite to the one direction, the positive direction of the Z axis). The first winding member 230 and the second winding member 234 are separated from each other.

  6 and 7, the first winding member 230 and the second winding are obtained by sliding the connecting sliding member 240 in the direction D1 with respect to the fixing member 226 by the biasing force of the compression spring 246. The member 234 is approaching.

  The 1st clamping member 238 and the 2nd clamping member 236 are attached to the rotation support tool 252 shown in FIG. A groove 258 extending in the X-axis direction is provided at the negative end of the first holding member 236 in the Z-axis direction, and a presser bar extending in the X-axis direction is provided at the positive end of the second holding member 238 in the Z-axis direction. Together with 260, the vicinity of the tips of the first separator 218 and the second separator 222 can be firmly held and fixed. The separation approach mechanism in which the first sandwiching member 238 and the second sandwiching member 236 are separated or approached is not illustrated, but is similar to the separation approach mechanism in which the first winding member 230 and the second winding member 234 are separated or approached. It is.

  Further, as shown in FIG. 5, the winding unit 212 according to the present invention includes a winding core 210, a front panel 213, an engagement pin 264, a rotation drive mechanism 266 that rotates the winding core 210, and an engagement pin. The engagement pin moving mechanism 268 that moves the H.264 in the direction of the rotation center axis C and the extraction mechanism that extracts the core 210 from the manufactured winding element 224 by moving the winding core 210 in the direction of the rotation center axis C. 270. The winding unit 212 is used by being incorporated in the winding device 271 shown in FIG. 8 that has the same configuration as the winding device 120 shown in FIG. 11 except for the winding unit 212.

  The rotation driving mechanism 266 includes a rotation jig 214 that fixes the core 210 and rotates together with the core 210, and a motor 272 that rotates the rotation jig 214. The rotating jig 214 includes a fixing portion 274 that fixes the joint 263 included in the winding core 210 and a first rod 276 that is continuous with the fixing portion 274 and has a hollow portion. The joint 263 is configured integrally with the fixing member 226. The fixing portion 274 is inserted with the joint 263 and fixed with a fastener such as a screw. The second rod 278 is inserted into the hollow portion of the first rod 276 so that the second rod 278 can slide in the X-axis direction with respect to the first rod 276.

  The engaging pin moving mechanism 268 has a front end and a rear end, a fixing portion 269 of the engaging pin 264 is fixed to the front end, a second rod 278 inserted into a hollow portion of the first rod 276, and a second rod The cam follower 280 that supports the rear end of the 278 and the cylinder 282 that moves the cam follower 280 in the X-axis direction. When the cylinder 282 is operated, the engagement pin 264 moves together with the second rod 278 in the X-axis direction with respect to the first rod 276.

  The extraction mechanism 270 supports the first rod 276, a bearing 284 fixed to the cylinder 282, a moving member 286 fixed to the cylinder 282 and moving in the X-axis direction, and moving the moving member 286 in the X-axis direction. And a ball screw 288. As the ball screw 288 rotates, the moving member 286 moves in the X-axis direction together with the first rod 276 and the core 210. Note that the moving mechanism that moves the rotary support 252 in the X-axis direction is the same mechanism as the extraction mechanism 270.

  Such a winding core 210 and winding unit 212 are incorporated into a winding device 271 shown in FIG. 8, and the positive electrode 216, the first separator 218, the negative electrode 220, and the second separator 222 are wound to wind the winding element 224. The operation and effect of manufacturing the will be described below.

  As shown in FIG. 8, three winding units 212 to which the winding core 210 is attached are incorporated in the turret 273 of the winding device 271. 8 is formed by winding the positive electrode 216, the first separator 218, the negative electrode 220, and the second separator 222 at the position S1, and cutting the positive electrode 216 and the negative electrode 220 by the cutters 275 and 277. A state immediately after the winding element 224 is sent to the position S2 by the rotation of the turret 273 is shown. In the state of FIG. 8, as shown in FIG. 5, the first separator 218 and the second separator 222 have the X axis of the gap 290 between the first clamping member 238 and the second clamping member 236 of the winding core 210 at the position S <b> 1. Located in the forward extension.

  Next, at the position S1, the moving mechanism of the rotation support tool 252 operates, and as shown in FIG. 9, the rotation support tool 252, the first holding member 238, and the second holding member 236 move in the negative X-axis direction, The first separator 218 and the second separator 222 enter the gap 290. Next, the ball screw 288 included in the extraction mechanism 270 of the winding unit 212 at the position S1 is activated, and the moving member 286, the rotating jig 214, and the core 210 are moved in the positive direction of the X axis as shown in FIG. To do. Next, the cylinder 282 of the engagement pin moving mechanism 268 is operated, the engagement pin 264 is moved in the positive direction of the X axis, the engagement pin 264 presses the engaged portion 261, and the second winding member 234 is moved. However, it slides in the direction D2 against the urging force of the compression spring 46. Further, when the core 10 moves in the positive direction of the X axis, the first clamping member 238 and the second clamping member 236 enter the grooves 228 and 232, and the state shown in FIG. 6 is obtained.

  Next, the separation approach mechanism of the first clamping member 238 and the second clamping member 236 operates, the first clamping member 238 and the second clamping member 236 approach, and the first separator 218 and the like are moved to the first clamping member 238 and It is clamped by the second clamping member 236. After the first clamping member 238 and the second clamping member 236 sandwich the first separator 218 and the second separator 222, the cutter 292 cuts the first separator 218 and the second separator 222.

  Next, in the winding unit 212 at the position S1, the motor 272 of the rotation driving mechanism 266 is operated to rotate the winding core 210, and after rotating the winding core 210 a plurality of times, the positive electrode 216 is stacked on the first separator 218, The negative electrode 220 is laminated between the first separator 218 and the second separator 222, and the winding core 210 is further rotated, so that the positive electrode 216, the first separator 218, the negative electrode 220, and the second separator 222 are wound. Will be beaten by. When the winding core 210 is rotated a predetermined number of times, the cutters 275 and 277 cut the positive electrode 216 and the negative electrode 220 and further rotate the winding core 210 a plurality of times to manufacture the winding element 224.

  When the winding element 224 is manufactured in the winding unit 212 at the position S1, the turret 273 shown in FIG. 8 is rotated clockwise by 120 °, and the winding unit 212 at the position S1 is sent to the position S2. The winding element 224 is sent to the position S2 while being wound around the winding core 210, and again enters the state shown in FIG. Next, the first sandwiching member 236 and the second sandwiching member 238 of the core 210 of S1 separate from the core 210 of the position S2 sandwich the first separator 218 and the second separator 222, and the cutter 292 The first separator 218 and the second separator 222 are cut. At the position S2 that supports the winding element 224 from which the first separator 218 and the second separator 222 are cut, the core 210 is further rotated about a plurality of times to completely wind the first separator 218 and the second separator 222, After the tape 294 is attached to the surface of the winding element 224, the turret 273 is further rotated 120 ° clockwise, and the winding element 224 is sent to the position S3.

  Next, at the position S3, the cylinder 282 of the engagement pin moving mechanism 268 is operated, the engagement pin 264 is moved in the negative direction of the X axis, the engagement pin 264 is separated from the engaged portion 261, and the second The winding member 234 slides in the direction D1 by the urging force of the compression spring 246. When the second winding member 234 slides in the direction D1 with respect to the slide pin 242, the first winding member 230 and the second winding member 234 come close to each other, and the first winding member 230 and the first winding member 230 A gap is generated between the winding member 234 and the inner peripheral surface of the winding element 224.

  Next, the ball screw 288 included in the extraction mechanism 270 of the winding unit 212 at the position S1 is actuated, and the moving member 286, the rotating jig 214, and the winding core 210 move in the negative direction of the X axis, and the first winding member 230 and the second winding member 234 are extracted from the winding element 224, and the first holding member 238 and the second holding member 236 support the winding element 224 in FIG. At this time, the first separator 218 and the like are sandwiched between the first sandwiching member 238 and the second sandwiching member 236. Therefore, when the first winding member 230 and the second winding member 234 are extracted from the winding element 224, the outer peripheral surfaces of the first winding member 230 and the second winding member 234 are the inner peripheral surfaces of the winding element 224. Even if contact is made, the inner peripheral surface of the winding element 224 is not displaced, and the center side of the winding element 224 is not pulled out like a bowl.

  Next, in position S3, the gripping device 298 grips the winding element 224 and lifts the winding element 224 slightly. Next, the separation approach mechanism of the first clamping member 238 and the second clamping member 236 is operated, the first clamping member 238 and the second clamping member 236 are separated from each other, and the first clamping member 238 and the second clamping member 236 are separated. Is separated from the first separator 218 and the like. Next, the movement mechanism of the rotation support tool 252 is activated, and the rotation support tool 252, the first holding member 238, and the second holding member 236 move in the positive direction of the X axis, and the first holding member 238 and the second holding member 236 is extracted from the winding element 224.

  The winding element 224 from which the first clamping member 238 and the second clamping member 236 have been extracted is transported to the next step and processed in the shape as it is or into a predetermined shape such as a prism, and then the metal case. Or a battery is manufactured by putting in a laminate pack.

  As mentioned above, although embodiment of this invention was described based on drawing, this invention is not limited to what was illustrated. For example, the wound element manufactured according to the present invention is not limited to a circular cross section, and may have an elliptical, flat, rectangular, or other polygonal cross section. Moreover, the winding member which comprises a winding core body is not limited to two, Three or more may be sufficient.

  In the present invention, when the winding core body is extracted from the winding element, the outer peripheral surface of the winding core body is separated from the inner peripheral surface of the winding element, so that the winding core body does not deform the winding element into a winding shape. The work for correcting the shape of the winding element is not required. For this reason, it can utilize widely as a core and a winding element manufacturing method.

10, 210: Cores 11 and 226: Fixing members 12, 216: Positive electrode 14, 218: First separator 16, 220: Negative electrode 18, 222: Second separator 20: Outer peripheral surface 22: Core 24: Hollow Portions 26: Clamp 28, 224: Winding element 29: Inner circumferential surface 30 (a), 230: First winding member 30 (b), 234: Second winding member 32 (a), 238: First clamping Member 32 (b), 236: Second clamping member 248, 250: Connecting portion 265: Tapered portion 267: Sharpened portion 274: Fixed portion C: Center axis of rotation

Claims (4)

A winding element that is wound on a rotating jig of the winding device and rotates around the rotation center axis to wind the belt-like positive electrode, the belt-like first separator, the belt-like negative electrode, and the belt-like second separator. A core that produces
A fixing member fixed to the rotating jig;
A clamp that clamps or releases at least the vicinity of the tips of the first separator and the second separator;
A winding core having a hollow part for inserting the clamp, and having an outer peripheral surface for winding the positive electrode, the first separator, the negative electrode, and the second separator;
With a separate body,
The winding core body includes a first winding member and a second winding member facing each other, the first winding member is fixed to the fixing member, and the second winding member is connected to the rotation center shaft. It is possible to slide in the cross-sectional direction and be separated from the first winding member,
In a state where the clamp is inserted into the hollow portion and sandwiches the vicinity of the tips of the first separator and the second separator, the first winding member and the second winding member are brought close to each other, and the winding core A winding core capable of separating the outer peripheral surface of the body from the inner peripheral surface of the winding element and extracting the winding core from the winding element.   In the state where the winding core is separated from the inner peripheral surface of the winding element, after the winding core is pulled out from the winding element, near the tips of the first separator and the second separator by the clamp The winding core according to claim 1, wherein the clamp is extracted from the winding element in a state in which the pinching is released. Winding element manufacturing which winds a strip | belt-shaped positive electrode, a strip | belt-shaped 1st separator, a strip | belt-shaped negative electrode, and a strip | belt-shaped 2nd separator by using the winding core described in Claim 1. Is the way
Sandwiching at least the vicinity of the first separator and the second separator by the clamp; and
Winding the positive electrode, the first separator, the negative electrode, and the second separator by rotating the winding core around a rotation center axis, and forming a winding element;
Causing the first winding member and the second winding member to approach each other and separating the outer peripheral surface of the winding core from the inner peripheral surface of the winding element;
Extracting the core from the winding element;
Releasing the vicinity of the tip of the first separator and the second separator by the clamp; and
Extracting the clamp from within the winding element;
A wound element manufacturing method including: In the state where the winding core is separated from the inner peripheral surface of the winding element, after the winding core is pulled out from the winding element, near the tips of the first separator and the second separator by the clamp The winding element manufacturing method according to claim 3, wherein the clamp is extracted from the winding element in a state in which the pinching is released.

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