Film sleeving device for lithium battery processing

Abstract

The application provides a film sleeving device for lithium battery processing, which comprises a rack, a bearing positioning assembly and a battery conveying assembly arranged on the rack, a film supporting assembly for supporting a heat-shrinkable film, a pre-shrinking assembly for fixing the heat-shrinkable film on a battery, and a heat-shrinking assembly for completely attaching the heat-shrinkable film to the battery, characterized in that the device further comprises intermittent conveying assemblies one and two arranged on the rack, which are used for intermittently driving the heat-shrinkable film to move, and one side of the intermittent conveying assembly one is provided with a cutting assembly which is used for intermittently cutting the heat-shrinkable film under the driving of the intermittent conveying assembly one. Through the cooperative work of the assemblies, the heat-shrinkable film is automatically sleeved on the lithium battery, so that the film sleeving efficiency for the battery is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of lithium battery processing technology, and in particular to a coating device for lithium battery processing. Background Technology

[0002] Patent document CN119627240A discloses a cylindrical battery end-film covering device, comprising a frame plate, a loading and unloading mechanism, a battery ejection mechanism to a rotating platform, a battery rotation and positioning transfer mechanism, a battery film covering mechanism, a battery unloading mechanism, a film covering mechanism support, and a rotating support mechanism. In this invention: heat shrinking ensures protection of the positive terminal face while meeting coding requirements; effectively saves material usage, thereby reducing production and procurement costs; solves the problem of uneven heat shrinkage of the cell film during production; meets user requirements for customized coding on the steel shell or film; ensures effective physical safety protection at the battery's positive and negative terminal junction sealing end, avoiding short circuits caused by impacts during energized transfer at the formation and capacity terminals; when coding the steel shell, a barcode scanner reads and stores the code on the film, facilitating production traceability of battery data.

[0003] However, this film-making device requires at least two drive sources to work together to cut the heat-shrink film, which increases costs. Therefore, it is necessary to improve this structure to overcome the above-mentioned shortcomings. Summary of the Invention

[0004] The purpose of this invention is to provide a coating device for lithium battery processing to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows:

[0006] A coating device for lithium battery processing includes a frame, a support and positioning assembly and a battery conveying assembly mounted on the frame, a film stretching assembly for stretching the heat-shrinkable film, a pre-shrinking assembly for fixing the heat-shrinkable film onto the battery, and a heat-shrinking assembly for completely adhering the heat-shrinkable film to the battery. The device is characterized by further comprising:

[0007] Intermittent conveying assembly one and intermittent conveying assembly two are installed on the frame. Intermittent conveying assembly one and intermittent conveying assembly two are used to intermittently drive the heat shrink film to move. A cutting assembly is provided on one side of intermittent conveying assembly one. The cutting assembly is used to intermittently cut the heat shrink film under the drive of intermittent conveying assembly one.

[0008] The present invention is further configured such that the bearing positioning component includes a bearing bracket and a limiting block 1. The two bearing brackets are respectively disposed on the frame. The bearing brackets are provided with an arc portion and a plurality of bearing grooves. The bearing grooves are arranged sequentially from the limiting block 1 to the pre-shrinking component. One bearing groove corresponding to the position of the film support component is connected to the arc portion. The cylindrical battery is supported by the bearing brackets. The limiting block 1 is disposed on the bearing brackets and limits the position of the battery by the limiting block 1.

[0009] The present invention is further configured such that the battery conveying assembly includes a first driving cylinder, a transverse moving bracket, a second driving cylinder, a conveying bracket, a third driving cylinder, and a pusher block. The first driving cylinder is mounted on the frame, the transverse moving bracket is movably mounted on the frame, one side of the transverse moving bracket is connected to the driving end of the first driving cylinder, and the transverse moving bracket can move laterally under the drive of the first driving cylinder. The second driving cylinder is mounted on the transverse moving bracket, the bottom of the conveying bracket is connected to the driving end of the second driving cylinder, and the top of the conveying bracket is provided with a positioning groove. The third driving cylinder is mounted on the bearing bracket, and the pusher block is mounted on the driving end of the third driving cylinder.

[0010] The present invention is further configured such that the film-supporting assembly includes a fixed bracket, an unwinding motor, guide wheels, a film-supporting rod, and pressure rollers one, two, and three. The fixed bracket is rotatably mounted on the frame. The unwinding motor is mounted on the frame and connected to the fixed bracket. A pair of guide wheels are rotatably mounted on the frame. The film-supporting rod is mounted on the frame. One side of the film-supporting rod has a tapered portion. Rollers one, two, three, and four are rotatably mounted on the film-supporting rod. A pair of pressure rollers one are rotatably mounted on the front and rear sides of the film-supporting rod and cooperate with rollers two. A pair of pressure rollers two are rotatably mounted on the front and rear sides of the film-supporting rod and cooperate with rollers three. A pair of pressure rollers three are rotatably mounted on the upper and lower sides of the film-supporting rod and cooperate with rollers four.

[0011] The present invention is further configured such that the intermittent conveying assembly includes a push plate, a rotary motor, a transmission rod, a transmission gear, a guide rod, a transmission plate, a return spring, and a conveying roller. The push plate is fixedly mounted on the frame and has a push part. The rotary motor is mounted on the frame. The transmission rod is rotatably mounted in the frame and connected to the rotary end of the rotary motor. A limiting groove is formed in the transmission rod. The transmission gear is mounted on the transmission rod. The guide rod is positioned in the limiting groove. The transmission plate is mounted on one side of the push plate and slidably mounted in the limiting groove of the transmission rod, and slidably connected to the guide rod. A protrusion is provided on one side of the transmission plate, and a drive rod is provided on the other side. The return spring is mounted on the guide rod. The conveying roller is rotatably mounted on the frame and rolls with a roller. A drive groove is provided on the conveying roller.

[0012] The present invention is further configured such that the intermittent conveying assembly 2 includes a push plate 2, a transmission rod 2, a transmission gear 2, a guide rod 2, a transmission plate 2, a return spring 2, and a conveying rubber wheel 2. The push plate 2 is fixedly mounted on the frame and has a push part 2. The transmission rod 2 is rotatably mounted in the frame and has a limit groove 2. The transmission gear 2 is mounted on the transmission rod 2 and meshes with the transmission gear 1. The guide rod 2 is mounted in the limit groove 2. The transmission plate 2 is mounted on one side of the push plate 2 and slides in the limit groove 2, and is slidably connected to the guide rod 2. One end of the transmission plate 2 has a protrusion 2, and the other end of the transmission plate 2 has a pair of drive rods 2. The return spring 2 is sleeved on the guide rod 2. The conveying rubber wheel 2 is rotatably mounted on the frame and cooperates with the roller 1. The conveying rubber wheel 2 has a drive groove 2.

[0013] The present invention is further configured such that the cutting assembly includes a third transmission gear, a rotating rod, a fourth transmission gear, a driving gear block, a third guide rod, a movable blade holder, a driving rack, a third return spring, and a cutting blade. The third transmission gear is mounted on the first transmission rod, the rotating rod is rotatably mounted in the frame, the fourth transmission gear is mounted on the rotating rod, the driving gear block is mounted on the rotating rod, a pair of third guide rods are respectively mounted in the frame, the movable blade holder is slidably mounted in the frame and slidably connected to the third guide rod, the driving rack is mounted on the movable blade holder, the third return spring is sleeved on the third guide rod, and the cutting blade is mounted on the movable blade holder.

[0014] The present invention is further configured such that the pre-shrinking assembly includes a positioning cylinder, a positioning block, a hot air gun, a hydraulic cylinder, a first movable frame, a fourth driving cylinder, a second movable frame, and a clamping cylinder. Two positioning cylinders are respectively mounted on a support bracket, with the driving ends of the two positioning cylinders facing the conveying bracket. A pair of positioning blocks are respectively disposed on the driving ends of the two positioning cylinders, with one end of each positioning block having an abutment portion. The hot air gun is disposed on a frame, with its outlet facing the conveying bracket. The hydraulic cylinder is disposed on a frame, with one end of the first movable frame connected to the hydraulic cylinder. The fourth driving cylinder is disposed on the first movable frame, and the top of the second movable frame is connected to the fourth driving cylinder. The clamping cylinder is disposed on the second movable frame.

[0015] The advantages of this invention are:

[0016] 1. This invention achieves automated application of heat-shrink film onto lithium batteries through the collaborative work of components, thereby effectively increasing the efficiency of film application to batteries.

[0017] 2. This invention achieves intermittent conveying of heat-shrink film through the coordinated operation of intermittent conveying component one, intermittent conveying component two, and cutting component, using a single rotary motor. When the heat-shrink film stops conveying, the rotary motor can drive the cutting component to cut the heat-shrink film. Both steps can be completed by driving one rotary motor, thereby reducing power costs. Attached Figure Description

[0018] Figure 1 This is the front view proposed in this invention.

[0019] Figure 2 This is a top view proposed in this invention.

[0020] Figure 3 This is the left view proposed in this invention.

[0021] Figure 4 This is one of the structural schematic diagrams proposed in this invention.

[0022] Figure 5 This is one of the structural schematic diagrams of the support bracket proposed in this invention.

[0023] Figure 6 This is the second schematic diagram of the structure proposed in this invention.

[0024] Figure 7 This is a schematic diagram of the structure when the positioning block proposed in this invention pushes the battery to the middle part of the heat shrink film.

[0025] Figure 8 This is one of the structural schematic diagrams of the drive tooth block proposed in this invention.

[0026] Figure 9This is one of the structural schematic diagrams of the pressure roller proposed in this invention.

[0027] Figure 10 This is one of the structural schematic diagrams of the conveyor roller proposed in this invention.

[0028] Figure 11 This is one of the structural schematic diagrams of the rotary motor proposed in this invention.

[0029] Figure 12 This is one of the structural schematic diagrams of the conveyor roller II proposed in this invention.

[0030] Figure 13 This is the second structural schematic diagram of the conveyor roller proposed in this invention.

[0031] Figure 14 This is one of the structural schematic diagrams of the push plate proposed in this invention.

[0032] Figure 15 This is one of the structural schematic diagrams of the transmission plate proposed in this invention.

[0033] Figure 16 This is one of the structural schematic diagrams of the transmission plate II proposed in this invention.

[0034] Figure 17 This is the second structural schematic diagram of the transmission plate proposed in this invention.

[0035] Figure 18 This is the third structural schematic diagram of the transmission plate proposed in this invention.

[0036] Figure 19 This is the second structural schematic diagram of the transmission plate 2 proposed in this invention.

[0037] Figure 20 This is one of the structural schematic diagrams of the membrane support rod proposed in this invention.

[0038] Figure 21 This is one of the structural schematic diagrams of the movable tool holder proposed in this invention.

[0039] Figure 22 This is a schematic diagram of the structure when the drive rod is inserted into the drive slot according to the present invention.

[0040] Figure 23 This is a schematic diagram of the structure when the drive rod 1 contacts the inner wall of the drive groove 1 as proposed in this invention.

[0041] Figure 24 This is a schematic diagram of the structure of the protrusion proposed in this invention when it rotates to a position where it no longer contacts the pushing part.

[0042] Numerical designations: Frame 100, Support bracket 101, Support groove 1011, Arc section 1012, Limit block 1 102, Drive cylinder 1 201, Lateral movement bracket 202, Drive cylinder 2 203, Conveyor bracket 204, Positioning groove 2041, Drive cylinder 3 205, Push block 206, Guide column 1 207, Guide column 2 208, Fixed bracket 301, Unwinding motor 302, Guide wheel 303, Film support rod 304, Conical section 3041, Roller 1 3042, Roller 2 3 043, Roller 3 3044, Roller 4 3045, Pressure Roller 1 305, Pressure Roller 2 306, Pressure Roller 3 307, Push Plate 1 401, Pushing Part 1 4011, Rotary Motor 1 402, Transmission Rod 1 403, Limiting Groove 1 4031, Transmission Gear 1 404, Guide Rod 1 405, Transmission Plate 1 406, Protrusion 1 4061, Drive Rod 1 4062, Return Spring 1 407, Conveying Rubber Roller 1 408, Drive Groove 1 4081, Push Plate 2 501, Pushing Part 2 50 11. Transmission rod 2 502, Limiting groove 2 5021, Transmission gear 2 503, Guide rod 2 504, Transmission plate 2 505, Protrusion 2 5051, Drive rod 2 5052, Return spring 2 506, Conveyor roller 2 507, Drive groove 2 5071, Transmission gear 3 601, Rotating rod 602, Transmission gear 4 603, Drive gear block 604, Guide rod 3 605, Moving tool holder 606, Drive rack 607, Return spring 3 608, Cutting blade 609, Positioning cylinder 701, Positioning block; 702, Abutment part; 7021, Hot air gun; 703, Hydraulic cylinder; 704, Moving frame one; 705, Drive cylinder four; 706, Moving frame two; 707, Clamping cylinder; 708, Limiting rod one; 709, Limiting rod two; 710, Conveyor motor; 801, Driven roller; 802, Driven roller; 803, Conveyor belt; 804, Upper hot air box; 805, Lower hot air box; 806, Hot air blower; 807, Air outlet pipe; 8071, Diverter pipe; 808, Diverter part one; 8081, Diverter part two; 8082. Detailed Implementation

[0043] like Figure 1-24 As shown, the present invention provides a coating device for lithium battery processing, comprising a frame 100, a bearing and positioning assembly and a battery conveying assembly disposed on the frame 100, a film stretching assembly for stretching the heat shrink film, a pre-shrinking assembly for fixing the heat shrink film onto the battery, and a heat shrinking assembly for ensuring that the heat shrink film is completely adhered to the battery, and further comprising:

[0044] Intermittent conveying assembly one and intermittent conveying assembly two are installed on the frame 100. Intermittent conveying assembly one and intermittent conveying assembly two are used to intermittently drive the heat shrink film to move. A cutting assembly is provided on one side of intermittent conveying assembly one. The cutting assembly is used to intermittently cut the heat shrink film under the drive of intermittent conveying assembly one.

[0045] In this embodiment, the bearing positioning component includes a bearing bracket 101 and a limiting block 102. Two bearing brackets 101 are provided, each mounted on the frame 100. Each bearing bracket 101 has an arcuate portion 1012 and a plurality of bearing grooves 1011 spaced apart. The shape of the bearing grooves is adapted to the lithium battery. The bearing grooves 1011 are arranged sequentially from the limiting block 1 to the pre-shrinking component, and the bearing grooves 1011 correspond to the positions of the film support component and the pre-shrinking component, respectively. A corresponding support groove 1011 is connected to the arc portion 1012. The support groove 1011 positions the lithium battery, and the arc portion 1012 is connected to the support groove 1011. The support bracket 101 supports the cylindrical battery. The limiting block 102 is disposed on one of the support brackets 101. This support bracket 101 is located away from the membrane support assembly. The limiting block 102 abuts and limits the position of the battery. The specific positional relationship of the support and positioning components is detailed in the appendix. Figure 1 , 2 3, 4, 5 and 6.

[0046] The solution features an arc-shaped portion 1012 on the support bracket 101. Since the lithium battery is placed on the support groove 1011, when the heat shrink film is applied to the lithium battery, the bottom of the heat shrink film needs to move between the support groove 1011 and the lithium battery. If the corners of the support groove 1011 are right angles, the heat shrink film may come into contact with the support groove 1011 during movement, resulting in film jamming. However, by providing an arc-shaped portion 1012 on one side of the support groove 1011, the heat shrink film can pass normally between the support groove 1011 and the lithium battery under the guidance of the arc-shaped portion 1012, thus completely applying the heat shrink film to the lithium battery.

[0047] In this embodiment, the battery conveying assembly includes a first drive cylinder 201, a lateral moving bracket 202, a second drive cylinder 203, a conveying bracket 204, a third drive cylinder 205, and a pusher block 206. The first drive cylinder 201 is mounted on the frame 100, with a drive end on one side. The lateral moving bracket 202 is movably mounted on the frame 100, with one side connected to the drive end of the first drive cylinder 201. The lateral moving bracket 202 can move laterally under the drive of the first drive cylinder 201. The second drive cylinder 203 is mounted on the lateral moving bracket 202, with its drive end facing upwards. The bottom of the conveying bracket 204 is connected to... The driving end of the second driving cylinder 203 is connected. The conveying bracket 204 is located between the two supporting brackets 101. The top of the conveying bracket 204 is provided with a positioning groove 2041. The shape of the positioning groove is adapted to the lithium battery. The positioning groove 2041 is used to support and position the lithium battery. The battery is moved by the conveying bracket 204. The third driving cylinder 205 is set on a supporting bracket 101 away from the membrane support rod 304. The position of the third driving cylinder 205 corresponds to the position of the membrane support assembly, and its driving end is set towards the membrane support assembly. The push block 206 is set on the driving end of the third driving cylinder 205. The push block 206 is used to push a part of the lithium battery out of the supporting bracket 101. For the specific positional relationship of the battery conveying components, please refer to the appendix. Figure 1 , 2 3, 4 and 6.

[0048] In one embodiment of the present invention, the battery delivery assembly further includes a first guide post 207 and a second guide post 208. The first guide post 207 is disposed on the support bracket 101 and slides with the transverse moving bracket 202. The first guide post 207 limits the displacement direction of the transverse moving bracket 202. The second guide post 208 is disposed on the top of the transverse moving bracket 202 and slides with the delivery bracket 204. The second guide post 208 limits the displacement direction of the delivery bracket 204.

[0049] In this embodiment, the film support assembly includes a fixed bracket 301, an unwinding motor 302, guide wheels 303, a film support rod 304, a first pressure roller 305, a second pressure roller 306, and a third pressure roller 307. The fixed bracket 301 is rotatably mounted on the frame 100 and has a space for placing the heat shrink film. The fixed bracket 301 is prior art and will not be described in detail here. The unwinding motor 302 is mounted on the frame 100, and one side of the unwinding motor 302 is connected to the fixed bracket 301. The unwinding motor 302 drives the fixed bracket 301 to rotate, thereby unwinding the heat shrink film. A pair of guide wheels 303 are provided. A guide wheel 303 is rotatably mounted on the frame 100, and the guide wheel 303 limits the heat shrink film. The film support rod 304 is mounted on the frame 100. The side of the film support rod 304 facing the fixed bracket 301 is provided with a tapered part 3041, which is used to expand the heat shrink film. Rollers 3041, roller 3042, roller 3043, roller 3044, and roller 3045 are rotatably mounted on the film support rod 304. There are two pairs of rollers 3042, which are respectively rotatably mounted on the upper and lower ends of the film support rod 304. There are two pairs of rollers 3043, which are respectively rotatably mounted on the film support rod 304. On the front and rear sides, two pairs of rollers 3044 are provided, and the two pairs of rollers 3044 are respectively rotatably mounted on the front and rear ends of the film support rod 304. Two pairs of rollers 4045 are provided, and the two pairs of rollers 4045 are respectively rotatably mounted on the upper and lower ends of the film support rod 304. One pair of pressure rollers 305 are provided, and the pressure rollers 305 are rotatably mounted on the frame 100. The pressure rollers 305 are respectively rotatably mounted on the front and rear sides of the film support rod 304. Each pressure roller 305 is respectively positioned between a pair of rollers 2043 and rolls with the rollers 2043 to guide the heat shrink film. The pressure rollers 206 are rotatably mounted on the frame 100. Above, a pair of pressure rollers 306 are provided, which are rotatably disposed on the front and rear sides of the film support rod 304. Each pressure roller 306 is disposed between a pair of rollers 3044 and rolls with the rollers 3044 of the film support rod 304 to guide the heat shrink film. A pair of pressure rollers 307 are rotatably disposed on the frame 100, which are rotatably disposed on the upper and lower sides of the film support rod 304. Each pressure roller 307 is disposed between a pair of rollers 3045 and rolls with the rollers 3045 to guide the heat shrink film. The specific positional relationship between each roller and pressure roller is detailed in the appendix. Figure 9 With appendix Figure 20 .

[0050] When pressure rollers 305, 306, and 307 roll in conjunction with rollers 3043, 3044, and 3045 of the film support rod 304, they can limit the movement of the film support rod 304 in six directions: front-back, left-right, and up-down. This prevents the film support rod 304 from moving when the heat shrink film moves on it. The rolling contact between the pressure rollers and the rollers also makes the heat shrink film transport smoother. In addition, the film support rod 304 is provided with a tapered part 3041. When the flat heat shrink film is stretched open, the tapered part 3041 allows the heat shrink film to expand gradually, which can prevent the heat shrink film from losing support due to sudden expansion and thus causing the film to jam.

[0051] In this embodiment, the intermittent conveying assembly includes a push plate 401, a rotary motor 402, a transmission rod 403, a transmission gear 404, a guide rod 405, a transmission plate 406, a return spring 407, and a conveying roller 408. The push plate 401 is fixedly mounted on the frame 100, and a push part 4011 is provided on the push plate 401. The push part 4011 is shaped like a quarter sphere. The rotary motor 402 is mounted on the frame 100. The transmission rod 403 is rotatably mounted in the frame 100. One end of the transmission rod 403 is connected to the rotating end of the rotary motor 402. The upper part of the transmission rod 403... Limiting grooves 4031 are respectively provided on both sides of the lower part. The transmission gear 404 is disposed on the transmission rod 403. Two guide rods 405 are respectively disposed in the limiting grooves 4031 of the transmission rod 403. The transmission plate 406 is disposed on one side of the push plate 401. The transmission plate 406 is slidably disposed in the limiting grooves 4031 of the transmission rod 403 and slidably connected to the guide rods 405. The side of the transmission plate 406 facing the push plate 401 is provided with a protrusion 4061. When the transmission plate 406 moves away from the push plate 401, the protrusion 4061 contacts the push part 4011. When the transmission plate 406 moves closer to the push plate 401, the protrusion 4061 contacts the push part 4011. When the moving plate 401 is in motion, the protrusion 4061 does not contact the pushing part 4011. A pair of driving rods 4062 are provided on the other side of the transmission plate 406. The return spring 407 is sleeved on the guide rod 405. One side of the return spring 407 abuts against the limiting groove 4031 of the transmission rod 403, and the other side abuts against the transmission plate 406. The conveying roller 408 is rotatably mounted on the frame 100. The conveying roller 408 is located between a pair of rollers 3042 and rolls with them. The conveying roller 408 is used to limit the position of the film support rod 304 and drive the heat shrink film. The conveying roller 408 is equipped with a drive groove 4081, the position of which corresponds to the position of the drive rod 4062 of the transmission plate 406. When the conveying roller 408 is driven to rotate by the transmission plate 406, the drive rod 4062 of the transmission plate 406 moves into the drive groove 4081 of the conveying roller 408, driving the conveying roller 408 to rotate. When the conveying roller 408 is no longer driven by the transmission plate 406, the drive rod 4062 of the transmission plate 406 moves out of the drive groove 4081 of the conveying roller 408, causing the conveying roller 408 to stop rotating. For the specific positional relationship of the intermittent conveying assembly, please refer to the appendix. Figure 9 , 12 13, 14, 15, 17 and 18.

[0052] In this embodiment, the intermittent conveying assembly two includes a push plate two 501, a transmission rod two 502, a transmission gear two 503, a guide rod two 504, a transmission plate two 505, a return spring two 506, and a conveying rubber wheel two 507. The push plate two 501 is fixedly mounted on the frame 100, and a push part two 5011 is provided on the push plate two 501. The push part two 5011 is shaped like a quarter sphere. The transmission rod two 502 is rotatably mounted in the frame 100. Limiting grooves two 5021 are respectively provided on the upper and lower sides of the transmission rod two 502. The transmission rod two 502 is located below the transmission rod one 403. The transmission gear two 503 is disposed on the transmission rod two 502. The second driving gear 503 meshes with the first transmission gear 404. Two guide rods 504 are respectively disposed in the limiting grooves 5021 of the second transmission rod 502. The second transmission plate 505 is disposed on one side of the second push plate 501. The second transmission plate 505 is slidably disposed in the limiting grooves 5021 of the second transmission rod 502 and slidably connected to the guide rods 504. A protrusion 5051 is provided at the end of the second transmission plate 505 facing the second push plate 501. When the second transmission plate 505 moves away from the second push plate 501, the protrusion 5051 contacts the second push plate 501. When the second transmission plate 505 approaches the second push plate 501, the protrusion 5051 does not contact the second push plate 501. The transmission plate 2 505 is in contact with the guide rod 2 504. A pair of drive rods 2 5052 are provided at one end of the transmission plate 2 505. The return spring 2 506 is sleeved on the guide rod 2 504. One side of the return spring 2 506 abuts against the limiting groove 2 5021 of the transmission rod 2 502, and the other side abuts against the transmission plate 2 505. The return spring 2 506 drives the transmission plate 2 505 to reset. The conveying roller 2 507 is rotatably mounted on the frame 100. The conveying roller 2 507 is located between a pair of rollers 1 3042 and rolls with the rollers 1 3042 of the film support rod 304. The conveying roller 2 507 is used to limit the film support rod 304 and drive the heat... The film shrinkage movement is achieved by providing a drive groove 5071 on the second conveying roller 507. The position of the drive groove 5071 corresponds to the position of the drive rod 5052 of the second transmission plate 505. When the second conveying roller 507 is driven to rotate by the second transmission plate 505, the drive rod 5052 of the second transmission plate 505 moves into the drive groove 5071 of the second conveying roller 507, thereby driving the second conveying roller 507 to rotate. When the second conveying roller 507 is no longer driven to rotate by the second transmission plate 505, the drive rod 5052 of the second transmission plate 505 moves out of the drive groove 5071 of the second conveying roller 507, thereby stopping the second conveying roller 507 from rotating. For the specific positional relationship of the intermittent conveying component 2, please refer to the appendix. Figure 12 , 13 14, 16 and 19.

[0053] In this embodiment, the cutting assembly includes a transmission gear 601, a rotating rod 602, a transmission gear 603, a drive gear block 604, a guide rod 605, a movable blade holder 606, a drive rack 607, a return spring 608, and a cutting blade 609. The transmission gear 601 is mounted on the transmission rod 403. The rotating rod 602 is rotatably mounted in the frame 100. The transmission gear 603 is mounted on the rotating rod 602 and meshes with the transmission gear 601, causing the transmission gear 603 to rotate. The drive gear block 604 is mounted on the rotating rod 602. A pair of guide rods 605 are provided and are respectively mounted in the frame 100. The movable blade holder 606 is slidably mounted in the frame 100. The movable tool holder 606 is slidably connected to the guide rod 605. The drive rack 607 is mounted on the movable tool holder 606. When the drive rack 607 is driven by the drive tooth block 604, the drive rack 607 meshes with the drive tooth block 604, causing the drive rack 607 to move downward. When the drive rack 607 returns to its original position or is not driven by the drive tooth block 604, the drive rack 607 separates from the drive tooth block 604, causing the drive rack 607 to return to its original position. The return spring 608 is sleeved on the guide rod 605. One side of the return spring 608 abuts against the frame 100, and the other side abuts against the movable tool holder 606. The cutting blade 609 is mounted on the movable tool holder 606. The specific positional relationship of the intermittent conveying component 2 is detailed in the appendix. Figure 11 , 12 With 21.

[0054] In this design, the drive tooth block 604 is smaller than a semicircle. When the transmission rod 403 drives the conveying roller 408 to rotate, causing the heat-shrink film to move forward, the drive tooth block 604 idles and does not engage with the drive rack 607. After the transmission rod 403 rotates but does not drive the conveying roller 408 to rotate, the drive tooth block 604 engages with the drive rack 607, thereby driving the drive rack 607 to move downward, which in turn drives the moving blade holder 606 and the cutting blade 609 to cut the heat-shrink film. After the cutting is completed, the drive tooth block 604 rotates to disengage from the drive rack 607, thereby causing the moving blade holder 606 and the cutting blade 609 to return to their upward position. The entire process is completed before the conveyor roller 408 moves the heat shrink film. That is, the moving tool holder 606 is stationary when the conveyor roller 408 rotates, and the moving tool holder 606 moves when the conveyor roller 408 is stationary. The time when the conveyor roller 408 stops is usually half a turn of the transmission rod 403. Therefore, the driving tooth block 604 is smaller than a semicircle. Thus, the contact time between the driving tooth block 604 and the driving rack 607 is less than half a turn. This ensures that the driving tooth block 604 disengages from the driving rack 607 before the transmission rod 403 drives the conveyor roller 408 to rotate, thereby allowing the moving tool holder 606 to reset and avoiding any impact on the heat shrink film conveying.

[0055] In this embodiment, the pre-shrinking assembly includes a positioning cylinder 701, a positioning block 702, a hot air gun 703, a hydraulic cylinder 704, a first movable frame 705, a fourth driving cylinder 706, a second movable frame 707, and a clamping cylinder 708. Two positioning cylinders 701 are provided, each mounted on a different support bracket 101. The driving ends of the two positioning cylinders 701 face the conveying bracket 204. A pair of positioning blocks 702 are provided, each positioned on the driving ends of the two positioning cylinders 701. Each positioning block 702 has an abutment portion 7021 at its end facing the conveying bracket 204. The hot air gun 703 is mounted on the frame 100, and its outlet end... A hot air gun 703 is used to heat the center of the heat-shrink film and pre-shrink it for positioning, with the conveyor support 204 facing towards it. A hydraulic cylinder 704 is mounted on the frame 100. One end of a movable frame 705 is connected to the hydraulic cylinder 704, allowing the movable frame 705 to move under the drive of the hydraulic cylinder 704. A fourth drive cylinder 706 is mounted on the movable frame 705. The top of a second movable frame 707 is connected to the fourth drive cylinder 706, allowing the second movable frame 707 to move under the drive of the fourth drive cylinder 706. A clamping cylinder 708 is mounted on the second movable frame 707, and the clamping end of the clamping cylinder 708 is shaped to fit the lithium battery, clamping the lithium battery. The specific positional relationships of the pre-shrinking components are detailed in the appendix. Figure 2 , 3 4, 6 and 7.

[0056] This solution uses a hot air gun 703 to shrink the middle part of the heat shrink film first, thereby initially fixing the heat shrink film to the lithium battery and ensuring the positional accuracy of the heat shrink film.

[0057] In one embodiment of the present invention, the pre-shrinking assembly further includes a first limiting rod 709 and a second limiting rod 710. The first limiting rod 709 is disposed at one end of the hydraulic cylinder 704 and slides in cooperation with the first movable frame 705, guiding the first movable frame 705. The second limiting rod 710 is respectively disposed on the first movable frame 705 and slides in cooperation with the second movable frame 707, guiding the second movable frame 707. By guiding the first movable frame 705 and the second movable frame 707 through the first limiting rod 709 and the second limiting rod 710, the movement accuracy of the clamping cylinder 708 is increased, thereby ensuring the clamping accuracy of the clamping cylinder 708 on the lithium battery.

[0058] In this embodiment, the heat shrink assembly includes a conveyor motor 801, a drive roller 802, a driven roller 803, a conveyor belt 804, an upper hot air box 805, a lower hot air box 806, a hot air blower 807, and a distribution pipe 808. The conveyor motor 801 is mounted on the frame 100. The drive roller 802 is rotatably mounted in the frame 100, with one side of the drive roller 802 connected to the conveyor motor 801. The driven roller 803 is rotatably mounted on the frame 100. One side of the conveyor belt 804 is fitted onto the drive roller 802, and the other side of the conveyor belt 804 is fitted onto the driven roller 803. The conveyor belt 804 has ventilation holes, through which hot air can pass to heat the heat shrink film. The upper hot air box 805 is mounted on the frame 100, located above the conveyor belt 804. The lower hot air box 806 is mounted on the frame 100, located at the bottom of the conveyor belt 804. The hot air blower 807 is mounted on one side of the frame 100, and an air outlet pipe 8071 is connected to the hot air blower 807. One end of the diverter pipe 808 is connected to the air outlet pipe 8071 of the hot air blower 807, and the other end of the diverter pipe 808 is provided with a diverter section 1 8081 and a diverter section 2 8082. The diverter section 1 8081 and the diverter section 2 8082 are respectively connected to the upper hot air box 805 and the lower hot air box 806. The specific positional relationship of the heat shrink assembly is detailed in the appendix. Figure 2 , 3 4 and 6.

[0059] The method of using the above-mentioned coating device for lithium battery processing includes the following steps:

[0060] S1: The battery is manually placed on the bearing groove 1011 of the bearing bracket 101, and one side of the battery abuts against the positioning part of the limiting block 102. Then, the second driving cylinder 203 drives the conveying bracket 204 to move upward between the bearing brackets 101. The conveying bracket 204 lifts the battery upward through the positioning groove 2041, thereby moving the battery upward away from the bearing bracket 101. Then, the first driving cylinder 201 drives the lateral moving bracket 202 to move forward one position. The lateral moving bracket 202 drives the conveying bracket 204 and the lithium battery to move forward one position. Then, the second driving cylinder 203 drives the conveying bracket 204 and the lithium battery to move downward. When the conveying bracket 204 is lower than the bearing bracket 101, the battery on the conveying bracket 204 falls back into the bearing groove 1011 of the bearing bracket 101. Then, the first driving cylinder 201 drives the lateral moving bracket 202 and the conveying bracket 204 to reset backward, thereby moving the cylindrical battery forward one position.

[0061] S2: Place the heat shrink film roll in the fixed bracket 301, pass the heat shrink film between the guide wheels 303, and put the heat shrink film on the tapered part 3041 of the film support rod 304. The tapered part 3041 of the film support rod 304 causes the heat shrink film to gradually expand from a flat shape to a circle. The heat shrink film passes through the pressure roller 1 305 and moves between the conveying roller 1 408 and the conveying roller 2 507. At the same time, the driving cylinder 3 205 drives the push block 206 to move. The push block 206 pushes the end of the battery close to the film support rod 304 to extend a part outward from the support bracket 101.

[0062] S3: The rotary end of the rotary motor 402 drives the transmission rod 403 to rotate. The transmission rod 403 drives the transmission plate 406 to rotate 27 degrees. When the transmission plate 406 rotates, the protrusion 4061 of the transmission plate 406 rotates to contact the pushing part 4011 of the stationary pushing plate 401. The pushing part 4011 pushes the transmission plate 406 along the limiting groove 4031 towards the conveying roller 408 through the protrusion 4061, so that the drive rod 4062 of the transmission plate 406 is fully inserted into the drive groove 4081 of the conveying roller 408 during the rotation (see details). Figure 22 Subsequently, transmission rod 403 drives transmission plate 406 to rotate 8 degrees, thereby causing drive rod 4062 to contact the groove wall in drive groove 4081 (see details). Figure 23Subsequently, transmission plate 406 drives conveyor roller 408 to rotate 180 degrees synchronously, and conveyor roller 408 drives the heat shrink film to the left. At the same time, transmission rod 403 drives transmission gear 503 to rotate through transmission gear 404, and transmission gear 503 drives transmission rod 502 to rotate. Similarly, transmission rod 502 rotates 215 degrees, and through transmission plate 505 and push plate 501, drives conveyor roller 507 to rotate 180 degrees, so that conveyor roller 507 synchronously drives the heat shrink film to the left, and the heat shrink film is placed on the battery.

[0063] When the protrusion 4061 of the transmission plate 406 rotates 215 degrees, and the conveying roller 408 and the conveying roller 507 complete a 180-degree rotation, the protrusion 4061 of the transmission plate 406 rotates until it no longer contacts the pushing part 4011 of the push plate 401. After losing the pushing force of the push plate 401, the transmission plate 406, driven by the return spring 407, moves away from the conveying roller 408. The drive rod 4062 moves out of the drive groove 4081 of the conveying roller 408, and the transmission plate 406 no longer drives the conveying roller 408 to rotate, thus stopping the conveying roller 408 from rotating (see details). Figure 24 Similarly, the drive rod 5052 of the transmission plate 505 also moves out of the drive groove 5071 of the conveying roller 507. Then, the transmission rods 403 and 502 drive the transmission plates 406 and 505 to rotate 145 degrees to their initial 360-degree position. During this stage, the transmission plates 406 and 505 no longer drive the conveying rollers 408 and 2 to rotate. When the transmission plates 406 and 505 have rotated 360 degrees back to their initial position, one cycle of heat-shrink film conveying is completed.

[0064] S4: During the process of transmission rod 403 rotating 215 degrees and driving conveyor roller 408 to rotate 180 degrees, while the heat shrink film is being conveyed to the left, transmission rod 403 drives transmission gear 403 to rotate 215 degrees via transmission gear 3 601. Transmission gear 4 603, while rotating, drives rotating rod 602 to rotate 215 degrees, and rotating rod 602 drives drive gear block 604 to idle 215 degrees towards drive rack. At this time, conveyor roller 408 and conveyor roller 2 507 drive the heat shrink film to the left. After transmission rod 403 has rotated 215 degrees, it continues to rotate to 360 degrees. During this period, transmission plate 406 and transmission plate 2 505 no longer drive conveyor roller 408 and conveyor roller 2 to rotate; both are in an idle state, conveyor roller 408 and conveyor roller 2 stop rotating, and the heat shrink film conveying stops.

[0065] During this pause, the rotating rod 602 drives the drive gear block 604 to rotate synchronously to 360 degrees. During rotation, the drive gear block 604 meshes with the drive rack 607, causing the drive gear block 604 to move the drive rack 607 downwards. The drive rack 607 then moves the movable blade holder 606 and the cutting blade 609 downwards. The cutting blade 609 then engages with the edge of the film support rod 304, cutting the heat-shrink film and separating it from the heat-shrink film on the film support rod 304, thus completing the cutting of the heat-shrink film. When the drive gear block 604 rotates to 360 degrees, it disengages from the drive rack 607. The movable blade holder 606 resets under the action of the return spring 608, causing the cutting blade 609 to rise, completing the reset and preparing for the next heat-shrink film cutting. At this point, the entire mechanism has rotated 360 degrees, returning to its initial state, ready for the next cycle.

[0066] S5: The battery with the heat shrink film on is conveyed forward by the conveying bracket 204. The positioning cylinder 701 pushes the positioning block 702 towards the battery from both sides. The side of the positioning block 702 pushes the heat shrink film to move. At the same time, the abutting part 7021 of the positioning block 702 pushes the battery to move, thereby limiting the battery and the heat shrink film, so that the battery is located in the center of the heat shrink film. After positioning, the battery and the heat shrink film move forward one station. At the same time, the hot air gun 703 blows hot air towards the middle of the battery and the heat shrink film. The hot air causes the middle part of the heat shrink film to shrink, thereby fixing the heat shrink film to the battery.

[0067] S6: The battery is conveyed forward by the conveyor bracket 204. The hydraulic cylinder 704 moves the first moving frame 705 and the clamping cylinder 708 to above the pre-compressed battery. The fourth driving cylinder 706 moves the second moving frame 707 and the clamping cylinder 708 downward. The clamping cylinder 708 clamps the lithium battery. Then, the clamping cylinder 708 is reset by the hydraulic cylinder 704 and the fourth driving cylinder 706, thereby moving the lithium battery onto the conveyor belt 804. When the clamping cylinder 708 releases the lithium battery, the lithium battery falls onto the conveyor belt 804. The conveyor belt 804 moves the battery. When the battery moves into the upper hot air box 805 and the lower hot air box 806, the hot air blower 807 delivers hot air to the upper hot air box 805 and the lower hot air box 806 respectively through the air outlet pipe 8071 and the diverter pipe 808. The hot air blows onto the battery, causing the heat shrink film on the battery to completely shrink and adhere to the battery, thus completing the coating of the lithium battery.

Claims

1. A coating device for lithium battery processing, comprising a frame (100), a support and positioning assembly and a battery conveying assembly disposed on the frame (100), a film stretching assembly for stretching the heat-shrinkable film, a pre-shrinking assembly for fixing the heat-shrinkable film onto the battery, and a heat-shrinking assembly for completely adhering the heat-shrinkable film to the battery, characterized in that, Also includes: Intermittent conveying assembly 1 and intermittent conveying assembly 2 are installed on the frame (100). Intermittent conveying assembly 1 and intermittent conveying assembly 2 are used to intermittently drive the heat shrink film to move. A cutting assembly is provided on one side of intermittent conveying assembly 1. The cutting assembly is used to intermittently cut the heat shrink film under the drive of intermittent conveying assembly 1. The bearing positioning component includes a bearing bracket (101) and a limiting block (102). The two bearing brackets (101) are respectively disposed on the frame (100). The bearing bracket (101) is provided with an arc portion (1012) and a plurality of bearing grooves (1011). The bearing grooves (1011) are arranged sequentially from the limiting block (102) to the pre-shrinking component. One bearing groove (1011) corresponding to the position of the membrane support component is connected to the arc portion (1012). The limiting block (102) is disposed on one of the bearing brackets (101), and the bearing bracket (101) is the bearing bracket (101) away from the membrane support component. The limiting block (102) limits the position of the battery. The film support assembly includes a fixed bracket (301), an unwinding motor (302), guide wheels (303), a film support rod (304), a first pressure roller (305), a second pressure roller (306), and a third pressure roller (307). The fixed bracket (301) is rotatably mounted on the frame (100). The unwinding motor (302) is mounted on the frame (100) and connected to the fixed bracket (301). A pair of guide wheels (303) are rotatably mounted on the frame (100). The film support rod (304) is mounted on the frame (100), and a tapered portion (305) is provided on one side of the film support rod (304). 41) Rollers 1 (3042), 2 (3043), 3 (3044) and 4 (3045) are rotatably arranged on the film support rod (304). A pair of pressure rollers 1 (305) are rotatably arranged on the front and rear sides of the film support rod (304) and cooperate with rollers 2 (3043). A pair of pressure rollers 2 (306) are rotatably arranged on the front and rear sides of the film support rod (304) and cooperate with rollers 3 (3044). A pair of pressure rollers 3 (307) are rotatably arranged on the upper and lower sides of the film support rod (304) and cooperate with rollers 4 (3045).

2. The coating device for lithium battery processing according to claim 1, characterized in that, The battery delivery assembly includes a drive cylinder (201), a transverse moving bracket (202), a drive cylinder (203), a delivery bracket (204), a drive cylinder (205), and a pusher (206). The drive cylinder (201) is mounted on the frame (100), and the transverse moving bracket (202) is movably mounted on the frame (100). One side of the transverse moving bracket (202) is connected to the drive end of the drive cylinder (201). The transverse moving bracket (202) can move from the drive cylinder (201) to the drive end of the drive cylinder (201). Driven by the ), the second driving cylinder (203) is mounted on the transverse moving bracket (202). The bottom of the conveying bracket (204) is connected to the driving end of the second driving cylinder (203). The top of the conveying bracket (204) is provided with a positioning groove (2041). The positioning groove (2041) is arranged sequentially from the first limiting block (102) to the pre-shrinking component. The third driving cylinder (205) is mounted on the bearing bracket (101). The push block (206) is mounted on the driving end of the third driving cylinder (205).

3. The coating device for lithium battery processing according to claim 1, characterized in that, The intermittent conveying assembly includes a push plate (401), a rotary motor (402), a transmission rod (403), a transmission gear (404), a guide rod (405), a transmission plate (406), a return spring (407), and a conveying roller (408). The push plate (401) is fixedly mounted on the frame (100) and has a push part (4011) on it. The rotary motor (402) is mounted on the frame (100). The transmission rod (403) is rotatably mounted in the frame (100) and connected to the rotary end of the rotary motor (402). A limit groove (4031) is formed in the transmission rod (403). The transmission gear (404) is mounted on the transmission rod (405). On 03), the guide rod (405) is disposed in the limiting groove (4031), the transmission plate (406) is disposed on one side of the push plate (401), the transmission plate (406) is slidably disposed in the limiting groove (4031) of the transmission rod (403), a protrusion (4061) is provided on one side of the transmission plate (406), a drive rod (4062) is provided on the other side of the transmission plate (406), the reset spring (407) is sleeved on the guide rod (405), the conveying roller (408) is rotatably disposed on the frame (100), the conveying roller (408) is in rolling cooperation with the roller (3042), and a drive groove (4081) is provided on the conveying roller (408).

4. The coating device for lithium battery processing according to claim 3, characterized in that, The intermittent conveying assembly two includes a push plate two (501), a transmission rod two (502), a transmission gear two (503), a guide rod two (504), a transmission plate two (505), a return spring two (506), and a conveying rubber wheel two (507). The push plate two (501) is fixedly mounted on the frame (100) and has a push part two (5011). The transmission rod two (502) is rotatably mounted in the frame (100) and has a limit groove two (5021). The transmission gear two (503) is mounted on the transmission rod two (502) and meshes with the transmission gear one (404). The second guide rod (504) is disposed in the second limiting groove (5021). The second transmission plate (505) is disposed on one side of the second push plate (501). The second transmission plate (505) is slidably disposed in the second limiting groove (5021). One end of the second transmission plate (505) is provided with a second protrusion (5051). The other end of the second transmission plate (505) is provided with a pair of second drive rods (5052). The second reset spring (506) is sleeved on the second guide rod (504). The second conveying rubber wheel (507) is rotatably disposed on the frame (100). The second conveying rubber wheel (507) cooperates with the first roller (3042). The second conveying rubber wheel (507) is provided with a second drive groove (5071).

5. A coating device for lithium battery processing according to claim 3, characterized in that, The cutting assembly includes a third transmission gear (601), a rotating rod (602), a fourth transmission gear (603), a drive gear block (604), a third guide rod (605), a movable blade holder (606), a drive rack (607), a third return spring (608), and a cutting blade (609). The third transmission gear (601) is mounted on the first transmission rod (403), the rotating rod (602) is rotatably mounted in the frame (100), and the fourth transmission gear (603) is mounted on the rotating rod (602). The drive gear block (604) is mounted on the rotating rod (602), a pair of guide rods (605) are respectively mounted in the frame (100), the movable tool holder (606) is slidably mounted in the frame (100) and slidably connected to the guide rods (605), the drive rack (607) is mounted on the movable tool holder (606), the reset spring (608) is sleeved on the guide rods (605), and the cutting blade (609) is mounted on the movable tool holder (606).

6. The coating device for lithium battery processing according to claim 2, characterized in that, The pre-shrinking assembly includes a positioning cylinder (701), a positioning block (702), a hot air gun (703), a hydraulic cylinder (704), a first moving frame (705), a fourth driving cylinder (706), a second moving frame (707), and a clamping cylinder (708). Two positioning cylinders (701) are respectively mounted on the support bracket (101), with the driving ends of the two positioning cylinders (701) facing the conveying bracket (204). A pair of positioning blocks (702) are respectively disposed on the driving ends of the two positioning cylinders (701), with one end of the positioning block (702)... The hot air gun (703) is provided with a contact part (7021), and is mounted on the frame (100). The air outlet of the hot air gun (703) is positioned facing the conveying bracket (204). The hydraulic cylinder (704) is mounted on the frame (100). One end of the first movable frame (705) is connected to the hydraulic cylinder (704). The fourth driving cylinder (706) is mounted on the first movable frame (705). The top of the second movable frame (707) is connected to the fourth driving cylinder (706). The clamping cylinder (708) is mounted on the second movable frame (707).

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