JP2017142987A - Electrode manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrode manufacturing device capable of efficiently manufacturing a high-quality electrode, and a battery manufacturing device.SOLUTION: The present invention relates to an electrode manufacturing device configured to cut out an electrode 102 in a predetermined shape from a battery material 100 in which an active material of the electrode 102 is continuously applied to a surface of a belt-like substrate 101 at predetermined intervals in a length direction. The electrode manufacturing device comprises: a drum part 1 which feeds out the battery material 100 while sucking it on a circumferential surface; a cutting part 3 for successively cutting out the electrode 102 in the predetermined shape from the battery material 100 that has been fed out of the drum part 1; and a nip roller part 2 which is disposed at least between the drum part 1 and the cutting part 3 for conveying the battery material 100 that has been fed out of the drum part 1, in a predetermined direction while holding it between a front side and a rear side. The drum part 1 and the nip roller part 2 are mutually disposed at an interval shorter than a length L1 of a portion C coated with the active material of one electrode 102 in the battery material 100.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electrode manufacturing apparatus that cuts an electrode into a predetermined shape while conveying battery material in a predetermined direction.

  In recent years, various types of batteries such as automobile batteries, residential batteries, and electronic device batteries have attracted attention. This battery is generally in a state where positive and negative electrodes and separators are alternately stacked, and it is one important key to efficiently manufacture electrodes for stacking with separators.

  In the production of this electrode, as shown in FIG. 9, a battery in which the active material of the electrode 102 is continuously applied to the surface of the base material 101 of the strip-shaped metal foil with a predetermined distance in the length direction. A material 100 is prepared in advance, and the battery material 100 is wound around a reel. Then, a reel of the battery material 100 is set in an apparatus for manufacturing a battery, and the electrode 102 is cut into a predetermined shape by a cutting portion while the battery material 100 is pulled out from the reel with a jig.

  However, when the battery material 100 is pulled out from the reel by the jig as described above, a series of operations in which the jig moves to the reel side, holds the battery material 100, and then moves to the opposite side of the reel is necessary. Therefore, it is difficult to manufacture the electrode 102 efficiently.

  By the way, it is known that the separator laminated with the electrode 102 is sequentially sent out by the drum portion (see Patent Documents 1 and 2). According to this, after the separator is adsorbed to the drum portion, it is sequentially sent out in the transport direction by the rotating action of the drum portion.

  For this reason, when manufacturing the electrode 102, it is conceivable that the belt-shaped battery material 100 is sequentially fed out while adsorbing the drum portion, like the separator.

JP 2012-113994 A JP 2009-9919 A

  However, since the battery material 100 is continuously coated with the active material of the electrode 102 at a predetermined interval in the length direction on the surface of the base 101 of the strip-shaped metal foil as described above, the electrode 102 There is a highly rigid coated portion C where the active material is coated and a low-rigid uncoated portion U where the active material of the electrode 102 is not coated. For this reason, if the battery material 100 is sent out while adsorbed to the drum portion as it is, there is a risk that buckling or bending may occur in the uncoated portion U with low rigidity where the active material of the electrode 102 in the battery material 100 is not applied. . As a result, wrinkles and cracks are generated in the battery material 100, and the quality as the battery material 100 is deteriorated. In addition, there is a problem that defective products are produced and the yield is increased.

  This invention is made | formed in view of the above-mentioned problem, and it aims at providing the electrode manufacturing apparatus and battery manufacturing apparatus which can manufacture a high quality electrode efficiently.

  In order to achieve the above object, an electrode manufacturing apparatus according to the present invention is a battery material in which an active material of an electrode is continuously applied to the surface of a strip-shaped substrate 101 with a predetermined interval in the length direction. An electrode manufacturing apparatus that cuts an electrode into a predetermined shape while transporting the battery material in a predetermined direction, from a drum portion that feeds the battery material while adsorbing to the peripheral surface, and a battery material that is fed from the drum portion A cutting part that sequentially cuts electrodes into a predetermined shape, and a battery that is disposed at least between the drum part and the cutting part and transports the battery material fed from the drum part in a predetermined direction while being sandwiched from the front side and the back side. Or a plurality of nip roller portions, and the drum portion and the nip roller portion are arranged at intervals shorter than the length of the active material coating portion of one electrode in the battery material. It is characterized in that is.

  According to this, after the battery material is sent out from the drum part, the drum part or the nip roller part exists both in the transport direction front and the transport direction rear of the uncoated portion of the active material of the electrode in the battery material. Therefore, buckling or bending can be prevented from occurring in the uncoated portion of the battery material.

  The nip roller portion is disposed on the downstream side of the first nip roller portion disposed on the upstream side of the cutting portion, the second nip roller portion disposed on the position of the cutting portion, and the cutting portion. You may provide a 3rd nip roller part.

  According to this, immediately after feeding the battery material from the drum portion, the first nip roller portion and the drum portion are first present in the transport direction front and rear in the transport direction of the uncoated portion of the active material of the electrode in the battery material. Therefore, buckling or bending is prevented from occurring in the uncoated portion of the battery material, and the battery material can be transported stably. Further, at the position of the cutting portion, the second nip roller portion and the first nip roller portion exist in the transport direction front and the transport direction rear of the uncoated portion of the active material of the electrode in the battery material. It is possible to prevent buckling or bending of the uncoated portion of the material, stably transport the battery material, and accurately cut the electrode from the battery material into a predetermined shape. Furthermore, since the third nip roller portion exists on the downstream side of the cutting portion, the electrodes cut out from the battery material into a predetermined shape can be individually and stably conveyed.

  Further, the nip roller portion may widen the interval in the thickness direction of the battery material when the front end portion of the electrode active material coating portion in the battery material passes. According to this, it can prevent that the front-end part of the application part of the active material of the electrode in a battery material is caught by a nip roller part, and buckles or bends.

  Further, the nip roller portion may push the battery material in the transport direction by rotating for a predetermined time after the drum portion stops feeding the battery material when cutting the electrode from the battery material into a predetermined shape. According to this, the electrode can be accurately cut into a predetermined shape while the battery material is stretched in the transport direction.

  The drum portion may adsorb the battery material over a range longer than the length of the coating portion of the active material of one electrode in the battery material. According to this, the rotating action of the drum portion can be reliably transmitted to the battery material, and it is possible to prevent the coated portion of the electrode active material from being peeled from the battery material.

  In addition, a dancer roller unit for adjusting the amount of battery material supplied to the drum unit may be provided on the upstream side of the drum unit. According to this, when the electrode is cut out from the battery material into a predetermined shape, the battery material can be sequentially supplied from the upstream side of the drum portion at a constant speed even when the drum portion stops and the feeding of the battery material is stopped. .

  Moreover, a rail part may be provided in the downstream of the said drum part, and this rail part may hold | maintain the battery material sent out from the said drum part from the surface side and a back surface side. According to this, after sending out battery material from a drum part, battery material can be reliably conveyed in a flat state.

  In addition, the rail portion may be arranged such that the distance in the thickness direction of the battery material is larger than the thickness of the coated portion of the electrode active material in the battery material. According to this, since an appropriate space is formed between the surface of the battery material and the rail portion, the battery material can be transported without damaging the coated portion of the electrode active material.

  The rail portion may be formed with a predetermined space for the cutting portion to pass when the cutting portion cuts the electrode from the battery material into a predetermined shape. According to this, when the battery material is transported, the battery material can be reliably held by the rail part, while when the electrode is cut out from the battery material into a predetermined shape, the cutting part passes through the rail part. Since the predetermined space is formed, the electrode can be reliably cut into a predetermined shape from the battery material.

  A battery manufacturing apparatus according to the present invention is characterized in that the above-described electrode manufacturing apparatus is provided. According to this, it becomes possible to manufacture a high-quality battery efficiently without yield.

  According to the present invention, after the battery material is sent out from the drum portion, the drum portion or the nip roller portion is present both in the transport direction front and rear in the transport direction of the uncoated portion of the electrode active material in the battery material. Therefore, it is possible to prevent buckling or bending from occurring in the uncoated portion of the battery material. For this reason, while being able to convey battery material stably, an electrode can be accurately cut out from battery material in a predetermined shape, and it becomes possible to manufacture a high quality electrode efficiently.

It is a front view which shows the whole structure of this apparatus. It is a top view which shows the whole structure of this apparatus. It is a block diagram which shows the electric constitution of this apparatus. It is an enlarged front view of the vicinity of the second nip roller portion of the present apparatus. It is a 1st figure which shows the process of conveyance of a battery material by this apparatus, and a cutting-out. It is a 2nd figure which shows the process of conveyance and cutting-out of the battery material by this apparatus. It is a 3rd figure which shows the process of conveyance of the battery material by this apparatus, and cutting-out. It is a 4th figure which shows the process of conveyance of the battery material by this apparatus, and a cutting-out process. It is a top view of the battery material by which the active material of the electrode was continuously applied.

  Next, an embodiment of an electrode manufacturing apparatus according to the present invention (hereinafter referred to as the present apparatus) will be described with reference to FIGS.

  As shown in FIG. 9, the battery material 100 used in the present embodiment has a thin-film positive electrode or negative electrode active material 102 in the length direction on the surface of a base 101 of a strip-shaped metal foil. The coating was continuously applied with a predetermined interval. In FIG. 9, the active material coating portion C of the electrode 102 is hatched.

  The apparatus cuts the electrode 102 into a predetermined shape while conveying the battery material 100 in a predetermined direction. The cylindrical drum portion 1 feeds the battery material 100 while adsorbing it, and the battery material 100 is fed to the drum portion 1. , A cutting unit 3 for cutting out the electrode 102 from the battery material 100 delivered from the drum unit 1, a cylindrical nip roller unit 4 for conveying the battery material 100, and a rail unit for holding the battery material 100 5, the camera part 6 which image | photographs the battery material 100 sent out from the drum part 1, and the control part 7 which controls each part.

  The drum portion 1 is disposed along a direction (vertical direction in FIG. 2) orthogonal to the transport direction (left and right direction in FIGS. 1 and 2) of the battery material 100 at the conveyance start point of the battery material 100, and a drive motor 1b. Therefore, it rotates intermittently counterclockwise when viewed from the front.

  Further, as shown in FIG. 2, the drum portion 1 has a plurality of suction holes 1a formed on the peripheral surface thereof, and a negative pressure is applied to the inside by a suction mechanism (not shown), through each suction hole 1a. The battery material 100 is adsorbed.

  Thus, when the drum unit 1 is rotating, the battery material 100 supplied from the supply unit 2 starts to be adsorbed at the uppermost point A of the drum unit 1 and is adsorbed to the peripheral surface of the drum unit 1 as it is. In this state, since the suction is released at the lowest point B of the drum unit 1 after being conveyed counterclockwise in the front view, the battery material 100 is moved forward in the conveying direction by the rotating action of the drum unit 1 (the right direction in FIG. 1). ). On the other hand, when the drum unit 1 is stopped, the battery material 100 stands by in a state where it is adsorbed to the peripheral surface of the drum unit 1, so that the battery material 100 can be reliably stopped from being sent out. For this reason, the battery material 100 can be intermittently sent out from the drum unit 1 by repeating the rotation and stop operations of the drum unit 1 at a high speed.

  In this embodiment, the drum portion 1 is longer than the length L1 of the active material coating portion C of one electrode 102 in the battery material 100, and the active material coating of two continuous electrodes 102 is applied. The battery material 100 is formed so as to adsorb over a range shorter than the length L2 of the portion C. Thus, by adsorbing longer than the length L1 of the active material coating portion C of one electrode 102 in the battery material 100, the rotational action of the drum portion 1 can be reliably transmitted to the battery material 100, and It is possible to prevent the coated portion C of the active material of the electrode 102 from peeling off from the battery material 100. In addition, the size of the drum unit 1 is reduced by reducing the size of the entire apparatus by adsorbing the active material of the two continuous electrodes 102 in the battery material 100 shorter than the length L2 of the coating portion C of the active material. be able to.

  The supply unit 2 supplies the battery material 100 to the drum unit 1 from a reel (not shown) around which the battery material 100 is wound, and adjusts the supply amount of the battery material 100 to the drum unit 1. A dancer roller unit 21 is provided.

  The dancer roller unit 21 is controlled to move along a predetermined direction (left-right direction in FIG. 1) in accordance with the rotation operation of the drum unit 1. Specifically, when the drum unit 1 is rotating, as shown in FIG. 6B, the battery material 100 is sequentially transferred to the drum unit 1 by moving forward in the conveying direction (right direction in FIG. 1). Supply. On the other hand, when the drum unit 1 is stopped, as shown in FIG. 8, the supply of the battery material 100 supplied from the upstream side is absorbed by moving backward in the transport direction (left direction in FIG. 1). Thus, the battery material 100 is not substantially supplied to the drum portion 1. According to this, even when the drum part 1 stops when the electrode 102 is cut out from the battery material 100 into a predetermined shape and the feeding of the battery material 100 is stopped, the battery material 100 is moved at a constant speed from the upstream side of the drum part 1. Can be supplied sequentially.

  A first guide roller portion 22 is provided on the upstream side of the dancer roller portion 21, and the battery material 100 flowing from above is changed so as to face the rear of the apparatus, so that the dancer roller portion 21 is not changed. The battery material 100 is directed from the front of the apparatus. Further, a second guide roller portion 23 is provided on the downstream side of the dancer roller portion 21 and in the vicinity of the uppermost point of the drum portion 1, and the battery material 100 flowing from the dancer roller portion 21 is placed in the rear of the apparatus. The battery material 100 is supplied to the uppermost point of the drum unit 1 by changing the direction of the battery.

  The cutting portion 3 includes a first cutting portion 31 that cuts a rear end portion of the active material coating portion C of the electrode 102 in the battery material 100, and a front end portion of the active material coating portion C of the electrode 102. And a second cutting section 32 for cutting.

  The first cut portion 31 includes a first upper cut portion 31a disposed on the front surface side (upper side) of the battery material 100 and a first lower side disposed on the back surface side (lower side) of the battery material 100. A cutting portion 31b, the first upper cutting portion 31a is lowered, and the first lower cutting portion 31b is raised and slides on each other, whereby the active material of the electrode 102 in the battery material 100 is applied. Cut while pressing the rear end of the work part C.

  The second cut portion 32 includes a second upper cut portion 32a disposed on the front surface side (upper side) of the battery material 100 and a second lower side disposed on the back surface side (lower side) of the battery material 100. A cutting portion 32b, the second upper cutting portion 32a descends, and the second lower cutting portion 32b rises and slides on each other, whereby the active material of the electrode 102 in the battery material 100 is applied. Cut while pressing the front end of the work part C.

  In the present embodiment, the upper cut portions 31a and 32a and the lower cut portions 31b and 32b are cut after the rear end portion or the front end portion of the active material coating portion C of the electrode 102 in the battery material 100. It is configured to return to the original position while being lifted up in a separated manner, and it is reduced that the blades slide and wear after cutting.

  The nip roller portion 4 includes a first nip roller portion 41 disposed upstream of the cutting portion 3, a second nip roller portion 42 disposed at the position of the cutting portion 3, and a downstream side of the cutting portion 3. And a third nip roller portion 43 disposed on the surface.

  These first, second, and third nip roller portions 41, 42, and 43 are all upper nip roller portions 41 a, 42 a, 43 a disposed on the surface side (upper side) of the battery material 100, and the back surface side of the battery material 100. The lower nip roller portions 41 b, 42 b, 43 b arranged on the (lower side) are arranged in contact with each other, and two sets are arranged at intervals smaller than the width of the battery material 100 along the width direction of the battery material 100. Is provided.

  The first nip roller portion 41 conveys the battery material 100 fed from the drum portion 1 in a predetermined direction while sandwiching the battery material 100 from the front surface side and the back surface side, and the upper nip roller portion 41a is rotated by a driving motor 41c. The lower nip roller portion 41b rotates in the clockwise direction in the front view while synchronizing with the rotary drum.

  Further, the first nip roller portion 41 is disposed at a distance shorter than the length L1 of the active material coating portion C of the electrode 102 in the battery material 100 between the first nip roller portion 41 and the drum portion 1. For this reason, immediately after the battery material 100 is sent out from the drum unit 1, first, the first nip roller portion 41 is provided both forward and backward in the transport direction of the uncoated portion U of the active material of the electrode 102 in the battery material 100. In addition, since the drum portion 1 is present without passing through the uncoated portion U of the active material of the other electrode 102, the uncoated portion U of the battery material 100 is prevented from being buckled or bent, The battery material 100 can be stably conveyed.

  The second nip roller portion 42 conveys the battery material 100 conveyed from the first nip roller portion 41 in a predetermined direction while sandwiching the battery material 100 from the front surface side and the back surface side. The upper nip roller portion 42a is driven by a drive motor 42c. Rotates counterclockwise while synchronizing with the rotating drum, and the lower nip roller portion 42b rotates clockwise while synchronizing with the rotating drum.

  Further, the second nip roller portion 42 is disposed at a distance shorter than the length L 1 of the active material coating portion C of the electrode 102 between the second nip roller portion 42 and the first nip roller portion 41. For this reason, at the position of the first cutting portion 31, the second nip roller portion 42 and the second nip roller portion 42 are both forward and backward in the transport direction of the uncoated portion U of the active material of the electrode 102 in the battery material 100. Since one nip roller portion 41 is present without passing through the uncoated portion U of the active material of the other electrode 102, it is possible to prevent the uncoated portion U of the battery material 100 from being buckled or bent. The battery material 100 can be stably conveyed, and the electrode 102 can be accurately cut out from the battery material 100 into a predetermined shape.

  The third nip roller portion 43 conveys the electrode 102 cut out from the battery material 100 by the cutting portion 3 in a predetermined direction while sandwiching the electrode 102 from the front surface side and the back surface side. The upper nip roller portion 43a is driven by the drive motor 43c. It rotates counterclockwise when viewed from the front, and the lower nip roller portion 43b rotates counterclockwise. Note that the third nip roller portion 43 rotates at a higher rotational speed than the first nip roller portion 41 and the second nip roller portion 42 when the electrode 102 cut out from the battery material 100 is conveyed.

  In addition, the third nip roller portion 43 is disposed at a distance shorter than the length L1 of the active material coating portion C of the electrode 102 between the third nip roller portion 42 and the second nip roller portion 42. For this reason, after the electrode 102 is cut out from the battery material 100 into a predetermined shape, the electrode 102 can be individually conveyed away from the original battery material 100.

  In the present embodiment, as shown in FIG. 4, each of the nip roller portions 41, 42, and 43 passes through the front end portion of the active material coating portion U of the electrode 102 in the battery material 100. The interval in the thickness direction is increased. According to this, it is possible to prevent the front end portion of the active material coating portion C of the electrode material 102 in the battery material 100 from being caught by the nip roller portions 41, 42, 43 and buckling or bending.

  Further, the second nip roller section 42 rotates the predetermined time after the drum section 1 stops feeding the battery material 100 when the electrode 102 is cut out from the battery material 100 into a predetermined shape. It is designed to stretch in the transport direction. According to this, the electrode 102 can be accurately cut into a predetermined shape while the battery material 100 is stretched in the transport direction.

  As shown in FIGS. 1 and 2, the rail portion 5 includes a first rail portion 51 disposed at the position of the first nip roller portion 41 and a second rail disposed at the position of the second nip roller portion 42. Rail portion 52 and a third rail portion 53 disposed at the position of the third nip roller portion 43.

  Each of these rail portions 51, 52, 53 includes upper rail portions 51 a, 52 a, 53 a disposed on the surface side (upper side) of the battery material 100, and a lower side disposed on the back surface side (lower side) of the battery material 100. The rail portions 51b, 52b, and 53b constitute one set, and a plurality of sets are provided within the width of the battery material 100 along the width direction of the battery material 100. For this reason, since each rail part 51,52,53 hold | maintains the battery material 100 sent out from the said drum part 1 from the surface side and a back surface side, it can convey the battery material 100 reliably in a flat state. .

  In addition, as shown in FIG. 4, the rail portions 51, 52, and 53 have an interval T in the thickness direction of the battery material 100 that is larger than the thickness of the active material coating portion C of the electrode 102 in the battery material 100. Is arranged. For this reason, an appropriate space is formed between the surface of the battery material 100 and each of the upper rail portions 51a, 52a, 53a, so that the active material coating portion C of the electrode 102 in the battery material 100 is transported without being damaged. can do.

  Each rail part 51, 52, 53 forms a predetermined space through which the cutting part 3 passes when the cutting part 3 cuts the electrode 102 from the battery material 100 into a predetermined shape. . In this embodiment, as shown in FIG. 2, each rail part 51,52,53 is comprised so that expansion-contraction is possible in the conveyance direction, and when conveying the battery material 100, each rail part 51,52,53 is conveyed. By extending in the direction, the battery material 100 can be held. Further, when the electrode 102 is cut out from the battery material 100 in a predetermined shape, a predetermined space is formed between the rail parts 51, 52, 53 by contracting the rail parts 51, 52, 53. The electrode 102 can be reliably cut out from the material 100 into a predetermined shape.

  The camera unit 6 is provided above the first nip roller unit 41 and the first cutting unit 31, and photographs each front end portion of the active material coating portion C of the electrode 102 in the battery material 100, The photographing data is transmitted to the control unit 7.

  As shown in FIG. 3, the control unit 7 controls each unit in an integrated manner. The control unit 7 determines the amount of battery material 100 delivered by the drum unit 1 based on image data taken by the camera unit 6, and will be described later. In addition, the rotation of the drum unit 1, the first, second and third nip roller units 41, 42, 43 is controlled according to the feed amount, the cutting of the cutting unit 3 is controlled, or the dancer roller unit 21. To control the movement.

  Next, the operation of this apparatus will be described with reference to FIGS.

  First, FIG. 5A shows a state in which, after the electrode 102 is cut out from the battery material 100 into a predetermined shape, the drum portion 1 is rotated to send out the battery material 100. In this state, the electrode 102 cut out from the battery material 100 is located between the second nip roller portion 42 and the third nip roller portion 43, and the active material coating portion C <b> 1 of the first electrode 102 in the battery material 100. Is located between the second nip roller portion 42 and the first nip roller portion 41, and the active material coating portion C2 of the second electrode 102 is located between the first nip roller portion 41 and the drum portion 1, The active material coating portion C <b> 3 of the third electrode 102 is adsorbed on the peripheral surface of the drum portion 1.

  At this time, in the battery material 100 delivered from the drum unit 1, the active material of the electrode 102 is interposed between the active material coating part C1 of the first electrode 102 and the active material coating part C2 of the second electrode 102. Although there is an uncoated portion U1 of the substance, the first nip roller portion 41 is present in the transport direction forward of the uncoated portion U1 of the active material of the electrode 102, and the drum portion is disposed rearward in the transport direction. 1 is present.

  Next, as shown in FIG. 5B, when the drum unit 1 further rotates and continues to feed out the battery material 100, the active material coating portion C <b> 1 of the first electrode 102 in the battery material 100 is the second one. The active material coating portion C2 of the second electrode 102 is conveyed forward while being sandwiched by the nip roller portion 42, and is transported forward while being sandwiched by the first nip roller portion 41. The coating portion C3 is conveyed downward while being adsorbed on the peripheral surface of the drum portion 1.

  At this time, in the battery material 100 delivered from the drum unit 1, the active material of the electrode 102 between the active material coating portion C 1 of the first electrode 102 and the active material coating portion C 2 of the second electrode 102. The uncoated portion U1 is in a state in which the second nip roller portion 42 exists in the front in the transport direction and the first nip roller portion 41 exists in the rear in the transport direction.

  Note that the electrodes 102 cut out from the battery material 100 are individually conveyed forward while being separated from the battery material 100 while being sandwiched between the third nip roller portions 43.

  Next, as shown in FIG. 6A, when the drum unit 1 further rotates and continues to feed out the battery material 100, the active material coating portion C <b> 1 of the first electrode 102 in the battery material 100 is second. The active material coating portion C2 of the second electrode 102 is transported forward while being sandwiched by the first nip roller portion 41 and is transported forward while being sandwiched by the first nip roller portion 41. The coating portion C3 is conveyed downward while being attracted to the peripheral surface of the drum portion 1.

  At this time, in the battery material 100 delivered from the drum unit 1, the active material of the electrode 102 between the active material coating portion C 1 of the first electrode 102 and the active material coating portion C 2 of the second electrode 102. The uncoated portion U1 is in a state in which the second nip roller portion 42 exists in the front in the transport direction and the first nip roller portion 41 exists in the rear in the transport direction. Further, in the battery material 100 delivered from the drum unit 1, the active material of the electrode 102 is between the active material coating portion C <b> 2 of the second electrode 102 and the active material coating portion C <b> 3 of the third electrode 102. However, the first nip roller portion 41 exists in the front of the uncoated portion U2 of the active material of the electrode 102 in the conveyance direction, and the drum portion 1 exists in the rear in the conveyance direction. Is in a state that exists.

  Note that the electrodes 102 cut out from the battery material 100 are individually transported forward so as to be further away from the battery material 100 by the rapid rotation by the third nip roller portion 43.

  Next, as shown in FIG. 6B, when the drum portion 1 further rotates and stops after feeding the battery material 100, the active material coating portion C1 of the first electrode 102 in the battery material 100 is: The active material coating portion C2 of the second electrode 102 is conveyed forward while being sandwiched by the second nip roller portion 42, and is transported forward while being sandwiched by the first nip roller portion 41. The active material coating portion C3 is transported downward while being adsorbed to the peripheral surface of the drum portion 1, and then placed in a position where the active material coating portion C1 of the first electrode 102 is cut out. The conveyance of the material 100 is stopped.

  At this time, in the battery material 100 delivered from the drum unit 1, the active material of the electrode 102 between the active material coating portion C 1 of the first electrode 102 and the active material coating portion C 2 of the second electrode 102. The uncoated portion U1 is in a state in which the second nip roller portion 42 exists in the front in the transport direction and the first nip roller portion 41 exists in the rear in the transport direction. Further, the active material uncoated portion U2 of the electrode 102 between the active material coated portion C2 of the second electrode 102 and the active material coated portion C3 of the third electrode 102 is in front of the transport direction. The first nip roller portion 41 is present and the drum portion 1 is present at the rear in the transport direction.

  The electrodes 102 cut out from the battery material 100 are individually conveyed forward while being further separated from the battery material 100 while being sandwiched between the third nip roller portions 43.

  On the other hand, the cutting part 3 is driven by the control part 7, the first and second upper cutting parts 31a, 32a start to descend, and the first and second lower cutting parts 31b, 32b start to rise. To do.

  Next, as shown in FIG. 7A, in the state where the drum portion 1 is stopped and the feeding of the battery material 100 is stopped, the first and second upper cut portions 31a and 32a are further lowered, and the first As the first and second lower cut portions 31b and 32b are further raised and slide against each other, the rear end portion and the front end portion of the active material coating portion C1 of the first electrode 102 in the battery material 100 are changed. By cutting while pressing, the electrode 102 is cut out from the battery material 100 into a predetermined shape.

  Next, as shown in FIG. 7B, in the state where the drum portion 1 is stopped and the feeding of the battery material 100 is stopped, the first and second upper cut portions 31a and 32a are raised, and the first The first and second lower cut portions 31 b and 32 b are lowered and separated from the battery material 100.

  In addition, since the dancer roller part 21 for adjusting the supply amount of the battery material 100 to the drum part 1 is provided on the upstream side of the drum part 1, the electrode 102 is cut out from the battery material 100 into a predetermined shape in this way. At this time, even when the drum unit 1 stops and the feeding of the battery material 100 is stopped, the battery material 100 can be sequentially supplied from the upstream side of the drum unit 1 at a constant speed.

  Next, as shown in FIG. 8, when the drum unit 1 starts to rotate again and sends out the battery material 100 in a state where the cutting unit 3 returns to the original state, the electrode 102 (the first electrode 102 is activated). The material coating portion C1) is conveyed forward while being sandwiched by the second nip roller portion 42, and the active material coating portion C2 of the second electrode 102 is forwardly sandwiched by the first nip roller portion 41. The active material coating portion C3 of the third electrode 102 is conveyed downward while being adsorbed on the peripheral surface of the drum portion 1.

  At this time, the active material uncoated portion U2 of the electrode 102 between the active material coated portion C2 of the second electrode 102 and the active material coated portion C3 of the third electrode 102 is forward in the transport direction. Is in a state in which the first nip roller portion 41 exists and the drum portion 1 exists at the rear in the transport direction.

  Thereafter, the state returns to the state shown in FIG. 5A, and the above-described transport, stop and cut-out of the battery material 100 are repeated intermittently at a high speed.

  As described above, after the battery material 100 is fed out from the drum unit 1, the drum unit 1 or the nip roller unit is provided both forward and backward in the transport direction of the uncoated portion U of the active material of the electrode 102 in the battery material 100. 4 is present without passing through the uncoated portion U of the active material of the other electrode 102, it is possible to prevent buckling or bending of the uncoated portion U of the battery material 100. For this reason, while being able to convey the battery material 100 stably, the battery material 100 can be cut out correctly and it becomes possible to manufacture the electrode 102 with high quality efficiently.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

DESCRIPTION OF SYMBOLS 1 ... Drum part 2 ... Supply part 21 ... Dancer roller part 22 ... 1st guide roller 23 ... 2nd guide roller
DESCRIPTION OF SYMBOLS 3 ... Cutting part 31 ... 1st cutting part 32 ... 2nd cutting part 4 ... Nip roller part 41 ... 1st nip roller part 42 ... 2nd nip roller part 43. ..Third nip roller section 5 ... rail section 51 ... first rail section 52 ... second rail section 53 ... third rail section 6 ... camera section 7 ... Control unit 100 .. Battery material 101... Base material 102... Electrode C... Electrode active material coating part U... Electrode active material uncoated part

Claims (10)

For a battery material in which the active material of the electrode is continuously applied to the surface of the band-shaped substrate with a predetermined interval in the length direction, the electrode is formed into a predetermined shape while conveying the battery material in a predetermined direction. An electrode manufacturing apparatus for cutting out,
A drum part that feeds battery material while adsorbing it to the peripheral surface;
A cutting part for sequentially cutting the electrodes into a predetermined shape from the battery material fed from the drum part;
A set or a plurality of sets of nip rollers arranged between at least the drum portion and the cutting portion and transporting the battery material fed from the drum portion in a predetermined direction while being sandwiched from the front surface side and the back surface side,
The said drum part and the said nip roller part are mutually arrange | positioned by the space | interval shorter than the length of the coating part of the active material of one electrode in battery material.   The nip roller portion includes a first nip roller portion disposed upstream of the cutting portion, a second nip roller portion disposed at the position of the cutting portion, and a third nip roller portion disposed downstream of the cutting portion. The electrode manufacturing apparatus according to claim 1, further comprising a nip roller portion.   3. The electrode manufacturing apparatus according to claim 1, wherein the nip roller portion widens an interval in a thickness direction of the battery material when a front end portion of a coating portion of the electrode active material in the battery material passes.   The nip roller portion is configured to push the battery material in the conveying direction by rotating for a predetermined time after the drum portion stops feeding the battery material when cutting the electrode from the battery material into a predetermined shape. The electrode manufacturing apparatus in any one of 3.   The said drum part is an electrode manufacturing apparatus in any one of Claims 1-4 adsorb | sucking battery material over the range longer than the length of the coating part of the active material of one electrode in battery material.   The electrode manufacturing apparatus according to any one of claims 1 to 5, wherein a dancer roller portion for adjusting a supply amount of battery material to the drum portion is provided upstream of the drum portion.   A rail part is provided in the downstream of the said drum part, This rail part hold | maintains the battery material sent out from the said drum part from the surface side and a back surface side, The electrode manufacture in any one of Claims 1-6 apparatus.   The said rail part is an electrode manufacturing apparatus of Claim 7 arrange | positioned so that the space | interval of the thickness direction of battery material may become larger than the thickness of the application part of the active material of the electrode in battery material.   The electrode manufacturing apparatus according to claim 7 or 8, wherein the rail portion is formed with a predetermined space through which the cutting portion passes when the cutting portion cuts the electrode from the battery material into a predetermined shape. A battery manufacturing apparatus comprising the electrode manufacturing apparatus according to claim 1.