A lithium battery pack tab gluing machine and gluing method

Abstract

The present invention relates to the field of lug gluing technology, and proposes a lug gluing machine and a gluing method for a lithium battery pack, which can further improve the gluing efficiency while meeting the lug gluing operation, and have better practicability. The lugs to be glued can be cleaned before gluing and heated and flattened after gluing, which improves the bonding effect to a certain extent, and the gluing quality is further improved. The machine comprises a frame, a clamping and conveying device, an alignment gluing device and a laser processing component, wherein the clamping and conveying device comprises two opposing shifting frames, which are both slidably connected to the top of the frame, and an opposing shifting driving structure is installed at the top of the frame, a transmission roller and an auxiliary roller are installed on the two opposing shifting frames, the two transmission rollers are both transmission-connected with a clamping belt, and the two clamping belts are respectively transmission-connected with two auxiliary rollers, the two opposing shifting frames are both fixedly connected with a supporting vertical plate, and one of the two supporting vertical plates is fixedly connected with a plurality of first support blocks.

Description

Technical Field

[0001] The present invention relates to the technical field of tab gluing, and in particular to a tab gluing machine and a gluing method for a lithium battery pack. Background Art

[0002] As we all know, the tab is a raw material for lithium-ion polymer battery products. Usually, the positive electrode of the battery uses aluminum material, the negative electrode uses nickel material, or the negative electrode also has copper-plated nickel material. They are all composed of two parts: film and metal strip. The film is the insulating part on the tab. Its function is to prevent short circuit between the metal strip and the aluminum-plastic film during battery packaging, and to heat and thermally seal the aluminum-plastic film together during packaging to prevent leakage.

[0003] After searching, the invention patent with Chinese patent application number CN202010863698.5 discloses a lithium battery pack ear gluing machine and a gluing method, which is roughly described as comprising a frame and a gluing device, a positioning device and a conveying device installed on the frame; the gluing device corresponds to the top of the positioning device, and the conveying device and the gluing device are respectively located on both sides of the positioning device; the gluing device is used to cut the adhesive tape and paste it on the ear of the lithium battery pack in the positioning device, and the conveying device is used to realize the loading and unloading of the lithium battery pack and the conveying between the positioning devices; it is characterized in that the gluing device comprises a fixed seat, a loading tray, a receiving tray, a rotating roller assembly, a cutter assembly, a pressing assembly, a transferring assembly and a tightening assembly. When in use, the loading and positioning: the conveying device transports the lithium battery pack to the positioning device, first the ear positioning assembly rises, and the block is exposed on the surface of the flat plate, the first positioning mechanism and the second positioning mechanism are The positioning mechanism starts to work, the driving cylinder drives the roller to rise, the folding rod rotates, and the positioning plate expands outward, and then the lithium battery pack is placed on the flat plate, the driving cylinder drives the roller to descend, and the positioning plate moves inward under the action of the spring, clamping the lithium battery pack from two directions; finally, the spinning cylinder drives the pressure rod to press the lithium battery pack from above, adhesive tape loading: the adhesive tape is sent out from the loading tray, and the adhesive tape is pressed on the U-shaped piece of the rotating roller assembly through the covering and pressing component, and the peeled release paper is collected on the receiving tray; the adhesive tape is attached to the U-shaped piece, and then the cutting knife assembly cuts the adhesive tape in the notch of the U-shaped piece so that the two ends of the adhesive tape are attached to the adjacent U-shaped pieces, adhesive tape transfer: the rotating roller assembly continues to rotate, and after the tightening assembly clamps the pole ear, the transfer assembly descends, so that the transfer block absorbs the adhesive tape, and the adhesive tape is transferred and attached to the pole ear, unloading and transportation: the positioning device releases the lithium battery pack, and the transportation device absorbs the lithium battery pack and transports it out to achieve unloading.

[0004] Although the above-mentioned prior art solution includes the entire process of gluing the tabs, it lacks pre-cleaning measures for the tabs before gluing. Since the rubber strips are mostly stored in rolls during storage, it is inevitable that the rubber strips will have a certain curvature after cutting and gluing. After gluing, the rubber strips are limited by their own shape and the degree of fit with the tabs needs to be further improved. The compaction effect of the rubber strips after gluing needs to be further improved, and the practicality needs to be further enhanced. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a lithium battery pack tab gluing machine and method, which can further improve the gluing efficiency while meeting the tab gluing operation, and has better practicality. The tabs to be glued can be cleaned before gluing and heated and smoothed after gluing, which improves the fitting effect between the rubber strip and the tabs to a certain extent, and the gluing quality is further improved.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lithium battery pack tab gluing machine, comprising a frame, which also includes a clamping and conveying device, an alignment gluing device and a laser processing component, the clamping and conveying device includes two opposing shifting frames, the two opposing shifting frames are both slidably connected to the top end of the frame, and a counter-shifting driving structure is installed on the top end of the frame, a transmission roller and an auxiliary roller are installed on the two opposing shifting frames, the two transmission rollers are both transmission-connected with a clamping belt, the two clamping belts are respectively transmission-connected with two auxiliary rollers, the two opposing shifting frames are both fixedly connected with a supporting vertical plate, one of the two supporting vertical plates is fixedly connected with a plurality of first supporting blocks, the other of the two supporting vertical plates is fixedly connected with a plurality of second supporting blocks, the two opposing shifting frames are both installed with a first servo motor, and the two first servo motors are The servo motors are respectively used for driving the rotation of the two transmission rollers. The alignment glue device includes two mounting frames, and the two mounting frames are fixedly connected to the top of the frame. The two mounting frames are fixedly connected with suspension frames. The two suspension frames are slidably connected with compression sleeves. The two compression sleeves are fixedly connected with a first elastic spring and a second elastic spring. The two first elastic springs are respectively fixedly connected to the two suspension frames, and the two first elastic springs are also respectively fixedly connected to the two suspension frames. The two compression sleeves are fixedly connected with glue support frames, and the two glue support frames are used for auxiliary storage of rubber strips. The laser processing assembly includes two cleaning laser heads and two softening laser heads. The two softening laser heads are respectively mounted on the two mounting frames. Two vertical plate frames are fixedly connected to the frame, and the two cleaning laser heads are respectively mounted on the two vertical plate frames.

[0009] Preferably, a sliding groove is provided at the left end of the leftmost second support block among the plurality of second support blocks, a support bar is slidably connected in the sliding groove, the support bar is connected to a locking spring, and the locking spring is fixedly connected in the sliding groove.

[0010] Furthermore, the two mounting frames and the two compression sleeves are provided with light inlets matching the softened laser heads.

[0011] Preferably, the counter-movement driving structure includes a threaded rod and a second servo motor, the threaded rod is rotatably connected to the top of the frame, the second servo motor is installed in the frame, and the second servo motor is transmission-connected to the threaded rod, and threaded sleeves are installed on the two counter-movement frames, the spiral directions of the threads in the two threaded sleeves are opposite, and the two threaded sleeves are threadedly connected to the threaded rod.

[0012] Furthermore, the two suspension brackets are fixedly connected to a first bent frame and a second bent frame, the two first bent frames are fixedly connected to the two mounting frames respectively, and the two second bent frames are also fixedly connected to the two mounting frames respectively.

[0013] Preferably, a driving gear is installed on the output shafts of the two first servo motors, and the two shifting frames are rotatably connected with a transmission gear, and the two transmission gears are meshed with a driven gear ring, and the two driven gear rings are respectively fixedly connected to the two transmission rollers.

[0014] Furthermore, the two driving rollers and the two auxiliary rollers are both provided with limiting protrusion rings matching the clamping belts.

[0015] Preferably, the two support vertical plates are each provided with a plurality of through openings, and the plurality of through openings are matched with the plurality of first support blocks and the plurality of second support blocks respectively.

[0016] Furthermore, a cover plate is installed on the frame through a gantry inclined frame.

[0017] A method for gluing a lithium battery pack tab gluing machine, comprising the following steps:

[0018] S1. When in use, first place the lithium battery pack tab gluing machine at the place of use and install the corresponding control circuit for the first servo motor and the shifting drive structure, then start the two first servo motors, and the two first servo motors respectively realize the synchronous relative movement of the two clamping belts through the two transmission rollers, and control the relative position of the two shifting frames through the shifting drive structure according to the thickness of the tab, so as to adjust the gap between the two clamping belts, and finally install the corresponding lasers for the cleaning laser head and the softening laser head;

[0019] S2. After the gap between the two clamping belts is adjusted, the rolls of rubber strips in a rolled state are placed on the two rubber support racks, the ends of the two rubber strip rolls are respectively picked up from the two rubber strip rolls and the adhesive surfaces of the two are attached to each other and then pulled through the area between the two compression sleeves, and then the two first servo motors are started, and after the two clamping belts move relatively stably, a plurality of pole ears are sequentially placed from the left ends of the two clamping belts, and after the pole ears completely enter the clamping area between the two clamping belts, the grip of the moving pole ears is released, and then the pole ears are accompanied by the movement of the two clamping belts to achieve synchronous movement with the two clamping belts;

[0020] S3. When the pole ear clamped and positioned by the clamping belt moves to the area between the two cleaning laser heads, the two cleaning laser heads work to output laser beams to perform laser cleaning on the corresponding area on the pole ear. After cleaning, the pole ear will follow the movement of the two clamping belts and further move into the area between the two clamping sleeves. Since there are two rubber strips that fit each other between the two clamping sleeves, the pole ear will push the two rubber strips to form a synchronous push after entering the area between the two clamping sleeves. In this way, the rubber strip and the pole ear can pass through the area between the two clamping sleeves synchronously to achieve the fitting of the rubber strip relative to the pole ear. When the pole ear with the fitted rubber strip passes through the operating area of ​​the softening laser head, the softening laser head works to output laser beams to heat and soften the rubber strip fitted on the pole ear. The heated and softened rubber strip will enter the operating area of ​​the two clamping sleeves again synchronously with the pole ear to form further compression and flattening.

[0021] S4. When the tab with the adhesive strip completely escapes from the area between the two clamping sleeves following the two clamping belts, the adhesive bonding operation of the tab is completed.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides a lithium battery pack tab gluing machine and gluing method, which have the following beneficial effects:

[0024] 1. In the present invention, through the design of the clamping and conveying device, the matching pole ear can form a corresponding clamping positioning and conveying structure to facilitate the directional movement of the pole ear relative to the rubber strip, thereby achieving the purpose of the pole ear glue sticking operation.

[0025] 2. In the present invention, through the design of the alignment glue sticking device, the movement of the matching pole ear forms the glue sticking operation, which not only meets the pole ear glue sticking operation, but also further improves the glue sticking efficiency and has better practicality.

[0026] 3. In the present invention, by matching the laser processing components, the tabs to be glued can be cleaned before gluing and heated and smoothed after gluing, which improves the fitting effect between the rubber strip and the tabs to a certain extent, and the gluing quality is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0029] Figure 3 It is a partially cutaway three-dimensional structural schematic diagram of the cooperation of the frame, the shifting frame and the gantry oblique frame of the present invention;

[0030] Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at B in the middle;

[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the cooperation of the shifting frame, the supporting vertical plate and the first supporting block of the present invention;

[0032] Figure 6 It is a schematic diagram of the three-dimensional structure of the cooperation of the moving frame, the supporting vertical plate and the transmission gear etc. of the present invention;

[0033] Figure 7 It is a schematic diagram of an exploded three-dimensional structure of the suspension bracket, the compression sleeve and the first elastic spring of the present invention;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the compression sleeve of the present invention;

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the present invention as a whole from another angle;

[0036] Fig.10 For the present invention Fig. 9 A schematic diagram of the local enlarged structure at C in the middle;

[0037] Fig.11 For the present invention Fig. 9 A schematic diagram of the local enlarged structure at D in the middle;

[0038] Fig.12 It is a schematic diagram of the three-dimensional structure of the cooperation between the shifting frame, the supporting vertical plate and the second supporting block of the present invention;

[0039] Fig.13 For the present invention Fig.12 A schematic diagram of the local enlarged structure at E in the middle;

[0040] Fig.14 It is a schematic diagram of the three-dimensional structure of the supporting strip and the tightening spring etc. of the present invention.

[0041] In the figure: 1. frame; 2. shift frame; 3. transmission roller; 4. auxiliary roller; 5. clamping belt; 6. support vertical plate; 7. first support block; 8. second support block; 9. mounting frame; 10. suspension frame; 11. clamping sleeve; 12. first elastic spring; 13. second elastic spring; 14. glue support frame; 15. vertical plate frame; 16. support bar; 17. tightening spring; 18. light inlet; 19. threaded rod; 20. threaded sleeve; 21. first curved frame; 22. second curved frame; 23. driving gear; 24. transmission gear; 25. driven gear ring; 26. limiting raised ring; 27. through port; 28. gantry inclined frame; 29. ​​cover plate. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example

[0044] See also Figure 1-Figure 14A lithium battery pack tab gluing machine includes a frame 1, a clamping and conveying device, a positioning gluing device and a laser processing component. The clamping and conveying device includes two opposing shifting frames 2. The two opposing shifting frames 2 are both slidably connected to the top of the frame 1, and a counter-movement driving structure is installed on the top of the frame 1. The counter-movement driving structure includes a threaded rod 19 and a second servo motor. The threaded rod 19 is rotatably connected to the top of the frame 1. The second servo motor is installed in the frame 1, and the second servo motor is transmission-connected to the threaded rod 19. The two opposing shifting frames 2 are both installed with threaded sleeves 20. The spiral square of the threads in the two threaded sleeves 20 is In the opposite direction, the two threaded sleeves 20 are threadedly connected to the threaded rod 19, forming a driving structure for the two shifting frames 2 to adjust each other and a limiting structure for the relative position of the two to be stable. The two shifting frames 2 are both installed with a driving roller 3 and an auxiliary roller 4. The two driving rollers 3 are both drivingly connected with a clamping belt 5. The two clamping belts 5 are respectively drivingly connected with the two auxiliary rollers 4. The two driving rollers 3 and the two auxiliary rollers 4 are both provided with a limiting protrusion ring 26 matching the clamping belt 5. The matching clamping belt 5 forms a height limit. The two shifting frames 2 are both fixedly connected with a supporting vertical plate 6. One of the two supporting vertical plates 6 supports the vertical plate 6. A plurality of first support blocks 7 are fixedly connected on the two support vertical plates 6, a plurality of second support blocks 8 are fixedly connected on the other support vertical plates 6 of the two support vertical plates 6, a first servo motor is installed on the two opposing shifting frames 2, a driving gear 23 is installed on the output shaft of the two first servo motors, a transmission gear 24 is rotatably connected on the two opposing shifting frames 2, the two transmission gears 24 are meshed with a driven gear ring 25, the two driven gear rings 25 are respectively fixedly connected to the two transmission rollers 3, the two first servo motors are respectively used for the rotational drive of the two transmission rollers 3, and the matching pole ears can be formed by the design of the clamping and conveying device. A corresponding clamping positioning and conveying structure is provided to facilitate the directional movement of the pole ear relative to the rubber strip, thereby achieving the purpose of the pole ear gluing operation. A sliding groove is provided at the left end of the leftmost second support block 8 among the multiple second support blocks 8, and a support bar 16 is slidably connected in the sliding groove. The support bar 16 is connected to a clamping spring 17, and the clamping spring 17 is fixedly connected in the sliding groove, so as to facilitate the auxiliary guiding and supporting of the pole ear during the process of the pole ear being loaded into the two clamping belts 5. Multiple through holes 27 are provided on the two supporting vertical plates 6, and the multiple through holes 27 are matched with the multiple first support blocks 7 and the multiple second support blocks 8 respectively.

[0045] It should be further explained that the alignment glue sticking device includes two mounting frames 9, the two mounting frames 9 are fixedly connected to the top of the frame 1, the two mounting frames 9 are fixedly connected with hanging frames 10, the two hanging frames 10 are fixedly connected with the first bent frame 21 and the second bent frame 22, the two first bent frames 21 are respectively fixedly connected to the two mounting frames 9, and the two second bent frames 22 are also respectively fixedly connected to the two mounting frames 9, and the two hanging frames 10 are slidably connected with a compression sleeve 11, and the two compression sleeves 11 are fixedly connected with the first elastic spring 12 and the second elastic spring 13, the two first elastic springs 12 are respectively fixedly connected to the two hanging frames 10, and the two first elastic springs 12 are also respectively fixedly connected to the two hanging frames 10, and the two compression sleeves 11 are fixedly connected with a glue support frame 14, and the two glue support frames 14 are both used for auxiliary storage of rubber strips. Through the design of the alignment glue sticking device, the movement of the matching pole ears forms a glue sticking operation, and when full While the gluing operation is being carried out on the pole ears, the gluing efficiency is further improved, and the practicality is better. The laser processing component includes two cleaning laser heads and two softening laser heads, and the two softening laser heads are respectively mounted on two mounting frames 9. Two vertical plate frames 15 are fixedly connected to the frame 1, and the two cleaning laser heads are respectively mounted on the two vertical plate frames 15. Through the matching of the laser processing component, the pole ears to be glued can be cleaned before gluing and heated and smoothed after gluing, which improves the fitting effect between the rubber strip and the pole ears to a certain extent, and the gluing quality is further improved. Light inlets 18 matching the softening laser heads are provided on the two mounting frames 9 and the two clamping sleeves 11, which facilitate the passage of the laser beam emitted by the softening laser heads. A cover plate 29 is installed on the frame 1 through the gantry inclined frame 28 to block the laser beams output by the cleaning laser heads and the softening laser heads, thereby improving the protection effect for the operators.

[0046] The first servo motor, the second servo motor, the cleaning laser head and the softening laser head in this embodiment are all conventional equipment purchased on the market and known to those skilled in the art. They can be selected or customized according to actual needs. In this patent, we only use them and do not improve their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method only need to be debugged according to the requirements of their instruction manual and will not be described in detail here.

[0047] In summary, the use of the lithium battery pack tab glue sticking machine includes the following steps: when in use, first place the lithium battery pack tab glue sticking machine at the place of use and install the corresponding control circuit for the first servo motor and the shifting drive structure, then start the two first servo motors, and the two first servo motors respectively realize the synchronous relative movement of the two clamping belts 5 through the two transmission rollers 3, and control the relative position of the two shifting frames 2 according to the thickness of the tab through the shifting drive structure, so as to adjust the gap between the two clamping belts 5, and finally install corresponding lasers for cleaning the laser head and softening the laser head. After the gap between the two clamping belts 5 is adjusted, the rolls of rubber strips in a rolled state are placed on the two glue support frames 14. The ends of the two rubber strip rolls are picked up from the two rubber strip rolls respectively, and the adhesive surfaces of the two are made to fit each other, and then pulled through the area between the two clamping sleeves 11, and then the two first servo motors are started. After the two clamping belts 5 move relatively stably, multiple pole ears are sequentially put into the left ends of the two clamping belts 5. After the pole ears completely enter the clamping area between the two clamping belts 5, the grip of the moving pole ears is released, and then the pole ears are synchronized with the movement of the two clamping belts 5. When the pole ears clamped and positioned by the clamping belts 5 move to the area between the two cleaning laser heads, the two cleaning laser heads work to output laser beams to perform laser cleaning on the corresponding areas on the pole ears. After cleaning, the pole ears will follow the two clamping belts 5 The movement of the rubber strip further moves into the area between the two compression sleeves 11. Since there are two rubber strips that fit each other between the two compression sleeves 11, the pole ear will push the two rubber strips to form a synchronous push after entering the area between the two compression sleeves 11. In this way, the rubber strip and the pole ear can pass through the area between the two compression sleeves 11 synchronously to achieve the fitting of the rubber strip relative to the pole ear. When the pole ear with the fitted rubber strip passes through the operating area of ​​the softening laser head, the softening laser head outputs a laser beam to heat and soften the rubber strip fitted on the pole ear. The heated and softened rubber strip will enter the operating area of ​​the two compression sleeves 11 again synchronously with the pole ear to form further compression and flattening. When the pole ear with the fitted rubber strip follows the two clamping belts 5 to completely escape from the two compression sleeves After tightening the area between the sleeves 11, the gluing operation of the pole ear can be completed, and finally the glue strip can be cut after gluing. Since the lithium battery pack pole ear gluing machine can simultaneously perform two-sided synchronous gluing operations relative to the pole ear, the gluing efficiency is greatly improved. The working principle of the shifting drive structure, that is, the second servo motor works to realize the rotation drive of the threaded rod 19. Since the two threaded sleeves 20 are threadedly connected to the threaded rod 19, the rotating threaded rod 19 will realize the relative approach or distance between the two shifting frames 2, so as to achieve the adjustment of the relative gap between the two clamping belts 5. The two supporting vertical plates 6 can form auxiliary support limits for the two clamping belts 5 to ensure the clamping effect of the pole ear between the two clamping belts 5.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery pack tab gluing machine, comprising a frame (1), characterized in that: The machine also includes a clamping and conveying device, an alignment and gluing device, and a laser processing component. The clamping and conveying device includes two opposing shifting frames (2). The two opposing shifting frames (2) are both slidably connected to the top of the frame (1), and a counter-shifting driving structure is installed on the top of the frame (1). The counter-shifting driving structure includes a threaded rod (19) and a second servo motor. The threaded rod (19) is rotatably connected to the top of the frame (1). The second servo motor is installed in the frame (1), and the second servo motor is transmission-connected to the threaded rod (19). The two opposing shifting frames (2) are both installed with a threaded sleeve (20). The spiral directions of the threads in the threaded sleeves (20) are opposite, the two threaded sleeves (20) are both threadedly connected to the threaded rod (19), the two shifting frames (2) are both mounted with a transmission roller (3) and an auxiliary roller (4), the two transmission rollers (3) are both transmission-connected with a clamping belt (5), the two clamping belts (5) are respectively transmission-connected with the two auxiliary rollers (4), the two shifting frames (2) are both fixedly connected with a support vertical plate (6), one of the two support vertical plates (6) is fixedly connected with a plurality of first support blocks (7), the other of the two support vertical plates (6) is A plurality of second support blocks (8) are fixedly connected to the plate (6), a first servo motor is installed on each of the two shifting frames (2), and the two first servo motors are respectively used to drive the two transmission rollers (3) to rotate. The alignment glue laminating device comprises two mounting frames (9), the two mounting frames (9) are fixedly connected to the top of the frame (1), the two mounting frames (9) are fixedly connected to a suspension bracket (10), the two suspension brackets (10) are slidably connected to a compression sleeve (11), the two compression sleeves (11) are fixedly connected to a first elastic spring (12) and a second elastic spring (13), and the two The first elastic spring (12) is fixedly connected to the two suspension brackets (10), respectively. The two first elastic springs (12) are also fixedly connected to the two suspension brackets (10), respectively. The two compression sleeves (11) are fixedly connected to a rubber support frame (14). The two rubber support frames (14) are used for auxiliary storage of rubber strips. The laser processing assembly comprises two cleaning laser heads and two softening laser heads. The two softening laser heads are respectively mounted on two mounting frames (9). The frame (1) is fixedly connected to two vertical plate frames (15). The two cleaning laser heads are respectively mounted on the two vertical plate frames (15).

2. A lithium battery pack tab gluing machine according to claim 1, characterized in that: A sliding groove is provided at the left end of the leftmost second support block (8) among the plurality of second support blocks (8), a support bar (16) is slidably connected in the sliding groove, the support bar (16) is connected to a clamping spring (17), and the clamping spring (17) is fixedly connected in the sliding groove.

3. A lithium battery pack tab gluing machine according to claim 2, characterized in that: The two mounting frames (9) and the two compression sleeves (11) are both provided with light inlets (18) matching the softening laser head.

4. A lithium battery pack tab gluing machine according to claim 3, characterized in that: The two suspension brackets (10) are both fixedly connected to a first bent frame (21) and a second bent frame (22); the two first bent frames (21) are respectively fixedly connected to the two mounting frames (9); and the two second bent frames (22) are also respectively fixedly connected to the two mounting frames (9).

5. A lithium battery pack tab gluing machine according to claim 4, characterized in that: A driving gear (23) is mounted on the output shafts of the two first servo motors, a transmission gear (24) is rotatably connected to the two shifting frames (2), the two transmission gears (24) are meshed with a driven gear ring (25), and the two driven gear rings (25) are respectively fixedly connected to the two transmission rollers (3).

6. A lithium battery pack tab gluing machine according to claim 5, characterized in that: The two transmission rollers (3) and the two auxiliary rollers (4) are both provided with limiting raised rings (26) matching the clamping belt (5).

7. A lithium battery pack tab gluing machine according to claim 6, characterized in that: A plurality of through openings (27) are provided on each of the two supporting vertical plates (6), and the plurality of through openings (27) are matched with the plurality of first supporting blocks (7) and the plurality of second supporting blocks (8) respectively.

8. A lithium battery pack tab gluing machine according to claim 7, characterized in that: A cover plate (29) is mounted on the frame (1) via a gantry inclined frame (28).

9. A method for gluing a lithium battery pack tab gluing machine, characterized in that: A lithium battery pack tab gluing machine according to any one of claims 1 to 8 is used, comprising the following steps: S1. When in use, the lithium battery pack tab gluing machine is first placed at the place of use and the corresponding control circuit is installed on the first servo motor and the shifting drive structure. Then, the two first servo motors are started. The two first servo motors respectively realize the synchronous relative movement of the two clamping belts (5) through the two transmission rollers (3). The relative position of the two shifting frames (2) is controlled by the shifting drive structure according to the thickness of the tab, and then the gap between the two clamping belts (5) is adjusted. Finally, the corresponding lasers are installed for the cleaning laser head and the softening laser head. S2, after the gap between the two clamping belts (5) is adjusted, the rolls of rubber strips in a rolled state are placed on the two rubber support racks (14), the ends of the two rubber strip rolls are respectively picked up from the two rubber strip rolls and the adhesive surfaces of the two are made to fit each other and then pulled through the area between the two clamping sleeves (11), and then the two first servo motors are started, and after the two clamping belts (5) move relatively stably, a plurality of pole ears are sequentially placed from the left ends of the two clamping belts (5), and after the pole ears completely enter the clamping area between the two clamping belts (5), the grip of the moving pole ears is released, and then the pole ears are synchronized with the movement of the two clamping belts (5) to achieve synchronous movement with the two clamping belts (5); S3. When the pole ear clamped and positioned by the clamping belt (5) moves to the area between the two cleaning laser heads, the two cleaning laser heads work to output laser beams to laser clean the corresponding area on the pole ear. After cleaning, the pole ear will follow the movement of the two clamping belts (5) and move further into the area between the two clamping sleeves (11). Since there are two rubber strips that fit each other between the two clamping sleeves (11), the pole ear will push the two rubber strips to form a synchronous push after entering the area between the two clamping sleeves (11). In this way, the rubber strip and the pole ear pass through the area between the two clamping sleeves (11) synchronously to achieve the adhesion of the rubber strip relative to the pole ear. When the pole ear with the glued rubber strip passes through the working area of ​​the softening laser head, the softening laser head works to output laser beams to heat and soften the rubber strip adhered to the pole ear. The heated and softened rubber strip will enter the working area of ​​the two clamping sleeves (11) synchronously with the pole ear again to form further compression and flattening. S4. When the tab with the adhesive strip completely escapes from the area between the two clamping sleeves (11) following the two clamping belts (5), the adhesive bonding operation of the tab is completed.

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