Pole piece unwinding, cutting and storing device

Abstract

The utility model discloses a pole piece unreeling, cutting and storing device, including the unreeling shaft, tension roller group, dust removal mechanism, cutting mechanism and storage mechanism that sets in proper order along the pole piece transmission direction, cutting mechanism includes feeding roller group and cutter subassembly, feeding roller group includes first and second feeding roller, storage mechanism includes storage plate, alignment push block and suction cup, and the cutter subassembly includes storage plate, alignment push block and suction cup. The alignment push block is adjustably arranged on one side of the storage plate; the cutting mechanism further comprises a deviation rectifying assembly. The deviation rectifying assembly comprises a supporting frame, a deviation rectifying guide rail, a first driving unit and a detection assembly, the deviation rectifying guide rail and the first driving unit are fixedly arranged, the supporting frame is slidably connected to the deviation rectifying guide rail, the first driving unit drives the supporting frame to move, and the detection assembly is arranged on the supporting frame and used for detecting the position of the pole piece; the cutter assembly is installed on the supporting frame and comprises a bearing plate, a second driving unit and a pole piece cutter, and the second driving unit is used for driving the pole piece cutter to cut pole pieces. The device can adjust the position of the lower cutter according to the deviation position of the pole piece.

Description

Technical Field

[0001] The utility model relates to the field of battery core pole piece manufacturing, in particular to a pole piece unwinding, cutting and storing device. Background Art

[0002] The battery cells of lithium-ion batteries are mainly made by winding the battery cell electrodes. The manufacturing process is to extract the wound electrode raw materials, cut the electrode into segments according to the preset battery size and electrode length, and then wind each electrode segment.

[0003] The existing electrode cutting and storage device can tension and transmit the electrode raw materials through the tensioning roller group, and output them to the cutting mechanism for cutting, and finally store the cut electrode in the storage mechanism for use in subsequent processes.

[0004] However, when the long electrode passes through the tensioning roller group and enters the cutting mechanism, the electrode may be misaligned in its width direction after a long transmission distance. The existing cutting mechanism lacks a precise cutting correction device. When the electrode is misaligned, the cutting blade cannot be accurately adjusted according to the offset position of the electrode. As a result, the incision will not be parallel to the width direction of the electrode, resulting in cutting deviation, which has an adverse effect on subsequent winding. Utility Model Content

[0005] The utility model aims to provide a pole piece unwinding, cutting and storing device which can accurately adjust the lower knife position of a cutting mechanism according to the offset position of the pole piece to avoid offset cutting.

[0006] The utility model provides a pole piece unwinding, cutting and storing device, comprising an unwinding shaft, a tensioning roller group, a dust removal mechanism, a cutting mechanism and a storage mechanism arranged in sequence along the pole piece conveying direction, the cutting mechanism comprising a feeding roller group and a cutting knife assembly arranged in sequence, the feeding roller group comprising a first feeding roller and a second feeding roller which can be driven to be relatively close to each other, the first feeding roller can be driven to rotate; the storage mechanism comprises a storage plate, an alignment push block and a suction cup, the suction cup can be moved between the cutting mechanism and the storage plate, the alignment push block can be adjusted along the width direction of the storage plate on one side of the width direction of the storage plate; the cutting mechanism also comprises a correction The deflection correction component includes a support frame, a deflection correction guide rail, a first drive unit and a detection component. The deflection correction guide rail and the first drive unit are fixed, and the support frame is slidably connected to the deflection correction guide rail along the width direction of the pole piece. The first drive unit drives the support frame to move along the width direction of the pole piece. The detection component is arranged on the support frame and is located between the tensioning roller group and the feeding roller group. The detection component is used to detect the position in the width direction of the pole piece; the cutter assembly is installed on the support frame, and the cutter assembly includes a supporting plate, a second drive unit and a pole piece cutter. The supporting plate is used to support the pole piece, and the second drive unit is used to drive the pole piece cutter to cut the pole piece.

[0007] As can be seen from the above scheme, the electrode is initially placed on the raw material unwinding shaft. The electrode is tensioned by the tensioning roller group and then introduced into the feeding roller group. The feeding roller group clamps the electrode and passes through the cutter assembly through the drive of the first feeding roller and is sucked by the suction cup and pulled into the storage plate. When it is pulled to the set length, the cutter cuts the electrode. The electrode pulled into the storage plate will be pushed to the set position along the width direction of the electrode by the alignment push block, which plays a corrective role and facilitates subsequent winding. The cutter assembly is installed on the support frame and can move along the width direction of the electrode with the support frame. The detection assembly is also directly set on the support frame. After detecting the deviation of the electrode, the cutting position of the cutter assembly in the width direction of the electrode can be adjusted to avoid cutting deviation. Compared with separating the detection assembly from the movable support frame and setting it in a fixed position in the present device, the detection assembly that can move with the support frame can reduce the detection error. The detected electrode deviation distance can be directly used as the driving distance of the first drive unit, slowing down the error accumulation and reducing the frequency of correcting the deviation correction assembly.

[0008] A preferred solution is that the detection assembly includes a fixing seat and a sensor assembly, the fixing seat is mounted on the support frame, and the sensor assembly is mounted on the fixing seat in an adjustable position along the width direction of the pole piece.

[0009] It can be seen that the position of the sensor component on the fixed seat can be adjusted along the width direction of the pole piece, so that different correction ranges can be set according to different pole piece types, and correction adjustments can also be made to make the correction cutting more accurate.

[0010] A further solution is that the fixing seat is provided with a threaded through hole and an adjustment guide rail extending along the width direction of the pole piece, the sensing assembly includes an adjusting screw, an adjusting slider and a sensing unit, the sensing unit is fixed to the adjusting slider, the adjusting slider is slidingly connected to the adjusting guide rail, the adjusting screw is rotatably connected to the adjusting slider and threadedly connected to the threaded through hole.

[0011] It can be seen that the relative position of the sensor unit on the support frame can be changed by rotating the adjusting screw.

[0012] A further solution is that the storage mechanism further comprises a negative pressure plate, a surface of which is provided with a plurality of negative pressure air holes, and the negative pressure plate is located between the cutter assembly and the storage plate.

[0013] It can be seen that the negative pressure plate can adsorb or release the electrode during the electrode transportation process, and can better control the position of the electrode in conjunction with the suction cup and the feeding roller group.

[0014] A further solution is that a gap is formed between the negative pressure plate and the storage plate, and the storage mechanism further includes a collection tank, which is located below the gap.

[0015] It can be seen that there may be waste in the process of cutting the electrode. The excess electrode cut off can fall into the collection tank below the gap between the negative pressure plate and the storage plate through the cooperation of the negative pressure plate and the suction cup for subsequent use.

[0016] A further solution is that the dust removal mechanism is used to remove dust from the pole pieces passing through the tensioning roller group. The dust removal mechanism includes a brush and a dust box. The brush is rotatably arranged inside the dust box. The upper part of the dust box has an opening. The transported pole pieces pass through the opening and contact with the brush.

[0017] It can be seen that the upper part of the dust removal mechanism is open, and the dust on the pole piece can fall into the dust collecting box to prevent the dust from floating everywhere.

[0018] A further solution is that the dust removal mechanism includes two dust removal mechanisms, which are respectively used to remove dust from two sides of the electrode.

[0019] It can be seen that the two dust removal mechanisms can remove dust from both sides of the pole piece.

[0020] A further solution is that the tensioning roller group includes several rotating rollers. Along the conveying direction of the pole piece, the dust box of the first dust removal mechanism is away from the upper opening of the cutting mechanism side and the brush is exposed, the dust box of the second dust removal mechanism is close to the upper opening of the cutting mechanism side and the brush is exposed, the first dust removal mechanism is located above the second dust removal mechanism close to the cutting mechanism side, a rotating roller is located at the opening of the dust box of the first dust removal mechanism and guides the first surface of the pole piece to contact the brush, and the other rotating roller is located at the opening of the dust box of the second dust removal mechanism and guides the second surface of the pole piece to contact the brush.

[0021] It can be seen that the relative position setting of the two dust removal mechanisms and the setting of the dust box opening angle make the opening of the dust box smaller, which can better prevent dust from flying and having an adverse effect on the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative effort.

[0023] Figure 1 It is a front view of an embodiment of the present utility model.

[0024] Figure 2 It is a structural diagram of an embodiment of the present utility model.

[0025] Figure 3 This is a structural diagram of the cutting mechanism of an embodiment of the utility model from a first perspective.

[0026] Figure 4 This is a structural diagram of the cutting mechanism of an embodiment of the utility model from a second perspective.

[0027] Figure 5 It is a structural diagram of the cutting mechanism of an embodiment of the utility model from a third perspective.

[0028] Figure 6 yes Figure 2 Magnified view of point A. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0031] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0032] like Figures 1 to 6 As shown, the present embodiment provides a device for unwinding, cutting and storing a pole piece, comprising a vertically arranged mounting base plate 1. On one side of the mounting base plate 1, an unwinding shaft 3, a tensioning roller group 4, a dust removal mechanism 5, a cutting mechanism 6 and a storage mechanism 7 are sequentially arranged along the conveying direction of the pole piece 2. The pole piece raw material roll 31 is sleeved on the unwinding shaft 3. The pole piece 2 drawn out from the pole piece raw material roll 31 passes through the tensioning roller group 4, the dust removal mechanism 5 and the cutting mechanism 6 in sequence and is finally sent to the storage mechanism 7. The tensioning roller group 4 comprises a plurality of fixed rotating rollers 41 and a plurality of rotating rollers 41 that can slide along a slide bar arranged on the mounting base plate 1. The pole piece 2 is tensioned by the action of the plurality of fixed and movable rotating rollers 41. A dust removal mechanism 5 is provided on the path along which the pole piece 2 moves along the tensioning roller group 4. The two dust removal mechanisms 5 can respectively remove dust from both sides of the pole piece 2.

[0033] like Figures 3 to 5As shown, the cutting mechanism 6 includes a feed roller group 61 and a cutter assembly 62 arranged in sequence along the transmission direction of the pole piece 2, wherein the feed roller group 61 includes a first feed roller 611 and a second feed roller 612, the first feed roller 611 is fixed to the mounting base 1, and can be driven to rotate by a motor, and the second feed roller 612 is rotatably mounted on the movable end of the feed drive cylinder 613, and the feed drive cylinder 613 can drive the second feed roller 612 to approach the first feed roller 611 to clamp the pole piece 2 introduced by the tensioning roller group 4. At this time, the first feed roller 611 rotates to drive the pole piece 2 to move toward the cutter assembly 62. In addition, the cutting mechanism 6 also includes a laser device 614, which can detect the transmission length of the pole piece 2 and accurately adjust the rotation distance of the first feed roller 611.

[0034] The storage mechanism 7 of the present device includes a storage plate 71, an alignment push block 72 and a suction cup 73. The storage plate 71 is fixed to the mounting substrate 1 and placed horizontally. The suction cup 73 can be driven to move between the cutter assembly 62 and the storage plate 71. When the electrode 2 is driven by the feeding roller group 61 and passes through the cutter assembly 62, the suction cup 73 will suck the electrode 2 and pull it toward the storage plate 71. After the electrode cutter 623 cuts, the electrode 2 cut into a section is placed on the storage plate 71. At this time, several alignment push blocks 72 located on one side of the storage plate 71 in the width direction will be driven to push the electrode 2 along the width direction of the storage plate 71 at the same time, so that one side of the electrode 2 in the length direction is close to the fixed block 77 located on the other side of the storage plate 71 in the width direction, so that the electrode 2 is corrected in the width direction. The corrected electrode 2 will be temporarily stored on the storage plate 71 and wait for subsequent winding work.

[0035] It should be noted that the storage plate 71 of the present device includes an upper plate 711 and a lower plate 712. Figure 2 As shown, the lower plate 712 is provided with a plurality of lower rails 713 extending along the width direction of the storage plate 71, and a plurality of alignment push blocks 72 can be slidably connected to the plurality of lower rails 713 in sequence, and the upper plate 711 is provided with a plurality of avoidance positions 714 corresponding to the alignment push blocks 72, and the plurality of alignment push blocks 72 can correspondingly move at the plurality of avoidance positions 714 along the width direction of the storage plate 71 to push the pole piece 2.

[0036] The cutting mechanism 6 of the present device further includes a deviation correction component 63, such as Figures 3 to 5 As shown, the correction component 63 includes a support frame 631, a correction guide rail 632, a first drive unit 633 and a detection component. The correction guide rail 632 and the first drive component are fixedly arranged on the mounting base 1. The correction guide rail 632 extends in the width direction of the pole piece 2 introduced thereto. The support frame 631 is slidably connected to the correction guide rail 632. Figure 3As shown, the first drive unit 633 includes a threaded rod 6331 that can be driven by a motor to rotate and extends along the width direction of the pole piece 2. The support frame 631 is threadedly connected to the threaded rod 6331. When the motor drives the threaded rod 6331 to rotate, the position of the support frame 631 can be accurately controlled. The detection component is also installed on the support frame 631 and can move with the support frame 631. The detection component extends from the support frame 631 to between the tensioning roller group 4 and the feeding roller group 61, thereby detecting the deviation of the pole piece 2 introduced by the tensioning roller group 4 in the width direction.

[0037] The cutter assembly 62 is mounted on the support frame 631 and is located on the output side of the electrode 2 of the feeding roller group 61. The cutter assembly 62 includes a supporting plate 621, a second driving unit 622 and an electrode cutter 623. Figure 4 As shown, the supporting plate 621 includes two blocks arranged upper and lower. The pole piece 2 passes between the two blocks and is guided to the pole piece cutter 623. The second driving unit 622 is fixed to the support frame 631. The second driving unit 622 can drive the pole piece cutter 623 downward perpendicular to the surface of the pole piece 2 and the width direction of the blade of the pole piece cutter 623 is parallel to the width direction of the pole piece 2 to cut the pole piece 2.

[0038] It should be noted that the detection component in this embodiment includes a fixing seat 6341 and a sensor component, such as Figure 3 As shown, the fixing seat 6341 is L-shaped, the fixing seat 6341 is mounted on the support frame 631 and is provided with a threaded through hole 6343 extending along the width direction of the pole piece 2 and an adjustment guide rail 6344, the sensor assembly includes an adjustment screw 6345, an adjustment slider 6346 and a sensor unit 6347, wherein the adjustment slider 6346 is slidably connected to the adjustment guide rail 6344 along the width direction of the pole piece 2, the sensor unit 6347 is mounted on the adjustment slider 6346 and extends between the tensioning roller group 4 and the feeding roller group 61, the adjustment screw 634 One end is rotatably connected to the adjustment slider 6346. The adjustment screw 6345 passes through the width direction of the pole piece 2 and is threadedly connected to the threaded through hole 6343. When the adjustment screw 6345 is manually rotated, the adjustment screw 6345 moves along the threaded through hole 6343 and drives the adjustment slider 6346 and the sensor unit 6347 to move on the adjustment guide rail 6344, thereby changing the position of the sensor unit 6347. The correctable range of the pole piece cutter 623 can be adaptively adjusted according to the different types of pole pieces 2 to be cut.

[0039] The operation mode of this device is as follows: a pole piece 2 is drawn out from the unwinding shaft 3 and tensioned to the tensioning roller group 4. When the tensioning roller group 4 pulls the pole piece 2, it passes through the dust removal mechanism 5 to remove dust from the pole piece 2. The pole piece 2 is pulled to the feeding roller group 61. The feeding roller group 61 clamps the pole piece 2 and pushes the pole piece 2 to the rear side of the pole piece cutter 623 so that the suction cup 73 can suck the pole piece 2. After the suction cup 73 sucks the pole piece 2, the feeding roller group 61 releases the pole piece 2. After the suction cup 73 pulls the pole piece 2 to the required length, the second driving unit 622 drives the pole piece cutter 623 to cut the pole piece 2. The suction cup 73 pulls the cut pole piece 2 to the support storage plate 71, and the alignment push block 72 pushes the pole piece 2 to correct the deviation and then store it. Before the pole piece cutter 623 cuts, the sensor unit 6347 will detect the deviation of the pole piece 2 along its width direction. At this time, the first drive unit 633 will drive the support frame 631 and the entire cutter assembly 62 to move along the width direction of the pole piece 2 according to the deviation size, and then cut the pole piece 2 after correcting the deviation.

[0040] The storage mechanism 7 of this embodiment also includes a negative pressure plate 74, such as Figure 2 As shown, a gap 75 is formed between the negative pressure plate 74 and the storage plate 71. Below the gap 75, the storage mechanism 7 further includes a collection trough 76 mounted on the mounting base plate 1. The surface of the negative pressure plate 74 is provided with multiple rows of negative pressure air holes 741, through which air is sucked to hold the electrode 2. When cutting the electrode 2 scraps, the linkage between the negative pressure plate 74, the electrode cutter 623, and the suction cup 73 allows the cut unwanted electrode 2 to fall into the collection trough 76 for collection.

[0041] The dust removal mechanism 5 of the electrode sheet unwinding, cutting and storing device provided in this embodiment can remove dust from the electrode sheet 2 passing through the tensioning roller group 4. The dust removal mechanism 5 includes a dust collecting box 51 and a brush 52 that is rotatably arranged in the dust collecting box 51. A dust removal motor 53 is provided outside the dust collecting box 51 to drive the brush 52 to rotate. The rotation axis of the brush 52 is parallel to the width direction of the electrode sheet 2. For the convenience of explanation, refer to Figure 1 and Figure 6 In this embodiment, the position of the tension roller set 4 relative to the cutting mechanism 6 is defined as the left side, and the position of the cutting mechanism 6 relative to the tension roller set 4 is defined as the right side. Figure 6As shown, the dust removal mechanism 5 includes two arranged along the conveying direction of the electrode 2, which are respectively used to remove dust from both sides of the electrode 2, wherein the first dust removal mechanism 5 along the conveying direction is located to the upper right of the second dust removal mechanism 5, and the upper left corner of the dust box 51 of the first dust removal mechanism 5 is provided with an arc-shaped opening and exposes a portion of its internal brush 52. One of the rotating rollers 41 in the tensioning roller group 4 is fixedly provided on the mounting substrate 1 and is located in the upper left corner of the first dust box 51 and is close to the brush 52, so as to guide the first side of the electrode 2 to contact the brush 52 to clean the first side of the electrode 2. The arc-shaped opening cooperates with the arc-shaped guiding surface of the rotating roller 41 to make the opening size of the dust box 51 as small as possible to prevent dust from escaping. Similarly, the upper right corner of the dust box 51 of the second dust removal mechanism 5 is provided with an arc-shaped opening and exposes a portion of its internal brush 52. Another fixed rotating roller 41 is located in the upper right corner of the second dust box 51 and guides the second side of the electrode 2 to contact the brush 52.

[0042] The above embodiment merely represents one embodiment of the present invention. While the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be based on the appended claims.

Claims

1. A device for unwinding, cutting, and storing a pole piece, comprising an unwinding shaft, a tensioning roller assembly, a dust removal mechanism, a cutting mechanism, and a storage mechanism, arranged in sequence along a pole piece conveying direction; the cutting mechanism comprising a feed roller assembly and a cutter assembly, the feed roller assembly comprising a first feed roller and a second feed roller that can be driven into relative proximity; the first feed roller can be driven to rotate; The storage mechanism includes a storage plate, an alignment push block and a suction cup, wherein the suction cup is movable between the cutting mechanism and the storage plate, and the alignment push block is adjustably arranged on one side of the storage plate in the width direction of the storage plate; It is characterized in that The cutting mechanism also includes a deviation correction component; The deflection correction assembly includes a support frame, a deflection correction guide rail, a first drive unit and a detection assembly, wherein the deflection correction guide rail and the first drive unit are fixedly arranged, the support frame is slidably connected to the deflection correction guide rail along the width direction of the pole piece, the first drive unit drives the support frame to move along the width direction of the pole piece, the detection assembly is arranged on the support frame and is located between the tensioning roller group and the feeding roller group, and the detection assembly is used to detect the position of the pole piece in the width direction; The cutter assembly is mounted on the support frame. The cutter assembly includes a supporting plate, a second driving unit and a pole piece cutter. The supporting plate is used to support the pole piece, and the second driving unit is used to drive the pole piece cutter to cut the pole piece.

2. The electrode unwinding, cutting and storage device according to claim 1, characterized in that: The detection assembly includes a fixing seat and a sensor assembly. The fixing seat is installed on the support frame, and the sensor assembly is installed on the fixing seat in an adjustable position along the width direction of the pole piece.

3. The electrode unwinding, cutting and storage device according to claim 2, characterized in that: The fixing seat is provided with a threaded through hole and an adjustment guide rail extending along the width direction of the pole piece. The sensor assembly includes an adjustment screw, an adjustment slider and a sensor unit. The sensor unit is fixed to the adjustment slider, the adjustment slider is slidably connected to the adjustment guide rail, and the adjustment screw is rotatably connected to the adjustment slider and threadedly connected to the threaded through hole.

4. The electrode unwinding, cutting and storage device according to claim 1, characterized in that: The storage mechanism further comprises a negative pressure plate, a surface of which is provided with a plurality of negative pressure air holes, and the negative pressure plate is located between the cutter assembly and the storage plate.

5. The electrode unwinding, cutting and storing device according to claim 4, characterized in that: A gap is formed between the negative pressure plate and the storage plate, and the storage mechanism further includes a collecting tank located below the gap.

6. The electrode unwinding, cutting and storing device according to any one of claims 1 to 5, characterized in that: The dust removal mechanism is used to remove dust from the pole piece passing through the tensioning roller group. The dust removal mechanism includes a brush and a dust box. The brush is rotatably arranged inside the dust box. The upper part of the dust box has an opening. The pole piece is transported through the opening and contacts the brush.

7. The electrode unwinding, cutting and storing device according to claim 6, characterized in that: The dust removal mechanisms include two, and the two dust removal mechanisms are respectively used to remove dust from two sides of the pole piece.

8. The electrode unwinding, cutting and storing device according to claim 7, characterized in that: The tensioning roller group includes several rotating rollers. Along the conveying direction of the pole piece, the dust collecting box of the first dust removal mechanism is away from the upper opening of the cutting mechanism side and the brush is exposed. The dust collecting box of the second dust removal mechanism is close to the upper opening of the cutting mechanism side and the brush is exposed. The first dust removal mechanism is located above the second dust removal mechanism close to the cutting mechanism side. One rotating roller is located at the opening of the dust collecting box of the first dust removal mechanism and guides the first surface of the pole piece to contact the brush. The other rotating roller is located at the opening of the dust collecting box of the second dust removal mechanism and guides the second surface of the pole piece to contact the brush.

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