Laser film cutting and rubberizing equipment and film cutting and rubberizing method thereof

Abstract

The invention discloses laser film cutting and rubberizing equipment and a film cutting and rubberizing method thereof. The equipment comprises a workbench, a material receiving and discharging mechanism, a transfer mechanism, a rubberizing rolling mechanism and a laser rubber cutting mechanism are installed on the workbench, the rubberizing rolling mechanism is provided with two rolling rollers, the laser rubber cutting mechanism is provided with a laser galvanometer, the transfer mechanism is located under the position between the two rolling rollers, and the laser galvanometer is located under the position between the two rolling rollers. The laser rubber cutting mechanism is located over the position between the two rolling rollers. According to the laser film cutting and rubberizing equipment disclosed by the invention, the transferring mechanism, the rubberizing and rolling mechanism, the laser rubber cutting mechanism, the material receiving and discharging mechanism and the like are integrated on the workbench, so that the work of automatic transferring and aligning, rubberizing and rolling, rubber surface cutting and the like of a battery cell is realized, and single-surface film pasting of the battery cell is completed; and multi-surface film pasting of the product can be completed through repeated work, so that the pasted film is smooth and free of bubbles, the processing efficiency is improved, and the reject ratio and the processing cost of the product are reduced.

Description

Technical Field

[0001] This invention relates to the field of batteries, and in particular to a laser film cutting and adhesive application device and a film cutting and adhesive application method thereof. Background Technology

[0002] According to statistics, lithium-ion battery cells have achieved remarkable development in the past few years, with rapid growth in the electric vehicle market and the widespread adoption of rechargeable devices. Furthermore, the expansion of the global electric vehicle market will further drive the demand for lithium-ion battery cells. Due to their high energy density, long lifespan, and environmentally friendly characteristics, lithium-ion battery cells are becoming the preferred technology for future energy storage and mobile devices. Therefore, the development momentum of lithium-ion battery cells will continue to strengthen.

[0003] In the manufacturing process of lithium battery cells, films and other materials need to be bonded to multiple surfaces of the cell and then cut. This mainly includes tasks such as feeding, transferring, film bonding, adhesive cutting, and material collection. Currently, these processes are generally performed separately or even manually, resulting in low efficiency and frequent problems such as air bubbles, uneven film bonding, and inaccurate film cutting. This increases product defect rates and processing costs, affecting product usability. Therefore, developing a highly efficient device that achieves smooth, bubble-free film bonding is essential. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a laser film cutting and adhesive application equipment and method. By integrating a transfer mechanism, an adhesive rolling mechanism, a laser adhesive cutting mechanism, and a material receiving and unloading mechanism onto a worktable, it achieves automated transfer and alignment of battery cell products, adhesive rolling, and adhesive surface cutting. This completes single-sided film application for lithium battery cell products and allows for multi-sided film application through repeated work, resulting in smooth, bubble-free film application, improved processing efficiency, and reduced product defect rate and processing costs.

[0005] According to one aspect of the present invention, a laser film cutting and adhesive application device is provided, comprising: Workbench; The feeding and receiving mechanism includes a feeding rack and a receiving rack respectively installed at the left and right ends of the worktable. A feeding roller and multiple feeding rollers are installed on the front side of the feeding rack, and a receiving roller is installed on the front side of the receiving rack. The transfer mechanism includes a servo slide extending to the left and right. The servo slide is installed on the worktable and located between the feeding rack and the receiving rack. A base plate is installed on the servo slide, and a lifting plate that can be raised and lowered is installed on the base plate. A ring light source that can be raised and lowered is installed on the lifting plate via a servo motor. The adhesive rolling mechanism includes two vertical support plates mounted on the worktable and arranged opposite each other. Two rolling rollers extending forward and backward are fixedly installed on the top of the left and right ends of the two vertical support plates, and each plate is slidably mounted with a sliding frame. The upper parts of the opposite sides of the two sliding frames are respectively connected to two rolling wheels by two lifting cylinders. Both rolling wheels can move directly above the two rolling rollers and can be raised and lowered. The laser cutting mechanism includes a column mounted on the worktable, a liftable optical bench mounted on the side of the column, and a laser galvanometer mounted at the end of the optical bench, the laser galvanometer being located directly above the two rolling rollers.

[0006] Therefore, this laser film-cutting and adhesive-applying equipment utilizes a feeding mechanism to feed the adhesive film, a transfer mechanism to transfer the battery cell, an adhesive-applying roller mechanism to apply the adhesive film to the battery cell, a laser-cutting mechanism to cut the applied adhesive film, and finally, a receiving mechanism to collect the cut adhesive film. Through the coordinated operation of these mechanisms, the equipment achieves rapid, precise, and automated film application and adhesive cutting of the battery cell.

[0007] In some embodiments, a vertical lifting slide rail is provided on the front side of the feeding rack, and a lifting roller is slidably mounted on the lifting slide rail. The advantage is that the lifting roller, by moving up and down via the lifting slide rail, can adjust the orientation of the adhesive film by adjusting its own height.

[0008] In some embodiments, sensors are installed on the receiving rack. This is advantageous because the sensors can be used to detect the receiving status of the adhesive film.

[0009] In some embodiments, each corner of the lifting plate is connected to the top of the base plate via multiple lifting guide rods. A sliding plate is slidably mounted on the base plate via a transverse slide rail. The sliding plate has inclined grooves at different heights at its left and right ends. A sliding shaft is mounted on the bottom surface of the lifting plate, extending into the inclined grooves. The advantage is that it further describes the structure enabling the lifting plate to rise and fall relative to the base plate, allowing the battery cells to rise and fall accordingly to facilitate subsequent adhesive application and cutting.

[0010] In some embodiments, a limiting block is provided on the front side of the sliding plate, and a limiting cylinder is mounted on the base plate opposite to the limiting block. The advantage is that the sliding plate can be blocked and limited during sliding by the contact between the limiting cylinder and the limiting block.

[0011] In some embodiments, two horizontally extending outer slide rails and two sliding pneumatic rods are respectively installed on the opposite sides of the two vertical support plates. The front and rear sides of the two sliding frames are respectively mounted on the two outer slide rails and connected to the two sliding pneumatic rods. The advantage is that the outer slide rails and sliding pneumatic rods allow the sliding frames to slide left and right, thereby driving the rolling rollers to move.

[0012] In some embodiments, the bottom of each of the two lifting cylinders is connected to two wheel frames, and the two rolling rollers are respectively mounted on the bottom of the two wheel frames. The advantage of this is that the rolling rollers can be stably mounted via the wheel frames.

[0013] In some embodiments, the top of the column has a handwheel. The advantage is that the specific structure of the column is further described, allowing the optical bench on the column to be raised or lowered via the handwheel.

[0014] According to another aspect of the present invention, a method for cutting and applying adhesive using the above-mentioned laser film cutting and adhesive application equipment is also provided, comprising the following steps: S1: The film is fed using the feeding rack, and the battery cell is placed on the ring light source and moved by the servo slide. S2: The adhesive film moves to the top between the two rollers, while the battery cell moves to the bottom between the two rollers. The servo motor operates to lift the battery cell, and the two rollers move and press down to adhere the adhesive film to the battery cell. S3: The laser galvanometer operates to cut the adhesive film bonded to the battery cell, cutting a specified size in the middle of the adhesive film, without completely cutting off the two sides of the adhesive film; S4: Use the receiving rack to collect the residual adhesive of the adhesive film and the battery cell at the same time.

[0015] In some implementations, the following steps are also included: S5: After flipping the battery cell to the other side, repeat steps S1 to S4 to complete the film application and adhesive cutting on the other side of the battery cell. S6: Repeat step S5 multiple times until the film is applied and the adhesive is cut on all sides of the battery cell.

[0016] Its advantage lies in the fact that after completing the film application and adhesive cutting on one side of the battery cell through steps S1 to S4, the battery cell can be flipped over and steps S1 to S4 can be repeated to complete the film application and adhesive cutting on the other side of the battery cell. In this way, the film application and adhesive cutting on all sides of the battery cell can be completed by repeating the above steps multiple times, thereby achieving the technical effect of fast and accurate automated film application and adhesive cutting on all sides of the battery cell. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a laser film cutting and adhesive application device and its film cutting and adhesive application method according to one embodiment of the present invention; Figure 2 for Figure 1 The diagram shows the structure of the adhesive film. Figure 3 for Figure 1 The diagram shows the structure of the feeding and receiving mechanism. Figure 4 for Figure 1 The diagram shows the structure of the transfer mechanism. Figure 5 for Figure 4 A partial structural schematic diagram of the transfer mechanism shown; Figure 6 for Figure 1 The diagram shows the structure of the adhesive roller pressing mechanism. Figure 7 for Figure 1 The diagram shows the structure of the laser cutting mechanism.

[0018] In the diagram: 1. Workbench; 2. Material feeding and receiving mechanism; 3. Transfer mechanism; 4. Adhesive rolling mechanism; 5. Laser adhesive cutting mechanism; 6. Adhesive film; 7. Battery cell; 21. Feeding rack; 22. Receiving rack; 23. Feeding roller; 24. Feeding roller; 25. Lifting slide rail; 26. Lifting roller; 27. Receiving roller; 28. Sensor; 31. Servo slide; 32. Base plate; 33. Lifting plate; 34. Servo motor; 35. Ring light source; 36. Lifting guide rod; 37. Horizontal slide rail; 38. Sliding plate; 39. Inclined slide groove; 310. Sliding shaft; 311. Limiting block; 312. Limiting cylinder; 41. Vertical support plate; 42. Rolling roller; 43. Sliding frame; 44. Lifting cylinder; 45. Rolling wheel; 46. Outer slide rail; 47. Sliding air rod; 48. Wheel frame; 51. Column; 52. Optical bench; 53. Laser galvanometer; 54. Handwheel. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] like Figure 1 As shown, the laser film cutting and adhesive application equipment includes a worktable 1, and other main mechanisms, including a material feeding and receiving mechanism 2, a transfer mechanism 3, an adhesive application and rolling mechanism 4, and a laser adhesive cutting mechanism 5, are all installed on the worktable 1 and are used for feeding and receiving the adhesive film 6, transferring the battery cell 7, and applying and cutting adhesive to the battery cell 7, respectively.

[0021] like Figure 2 As shown, the adhesive film 6 is a single-layer film, which generally does not have a release paper layer, and the back of the adhesive film 6 is coated with adhesive.

[0022] like Figure 3 As shown, the feeding and receiving mechanism 2 includes a feeding rack 21 and a receiving rack 22. The feeding rack 21 and the receiving rack 22 are respectively installed at both ends of the workbench 1 (set as left and right ends). The feeding rack 21 is used to feed the film 6, while the receiving rack 22 is used to receive the film 6.

[0023] A feeding roller 23, multiple feed rollers 24, and a lifting roller 26 capable of being raised and lowered are installed on one side of the feeding rack 21 (designated as the front side, and the opposite side as the rear side). The feeding roller 23 is connected to a motor (not shown in the figure) installed on the rear side of the feeding rack 21 and is used to feed the adhesive film 6; while the feed rollers 24 and the lifting roller 26 are used to feed the adhesive film 6, and the lifting roller 26 can adjust the direction of the adhesive film 6 by adjusting its own height.

[0024] Preferably, the front side of the feeding rack 21 is provided with a vertical lifting slide rail 25, and the lifting roller 26 is slidably mounted on the lifting slide rail 25, so that it can be lifted and lowered along the lifting slide rail 25.

[0025] A receiving roller 27 is installed on the front side of the receiving rack 22. The receiving roller 27 is connected to a motor (not shown in the figure) installed on the rear side of the discharging rack 21. It is used to collect the film 6.

[0026] Preferably, a sensor 28 is also installed on the front side of the receiving rack 22, with the sensor 28 facing the receiving film 6, and can be used to detect the receiving status of the film 6.

[0027] like Figure 4-5 As shown, the transfer mechanism 3 includes a servo slide 31 extending left and right. The servo slide 31 is mounted on the worktable 1 and located between the feeding rack 21 and the receiving rack 22. A base plate 32 is mounted on the servo slide 31, and a lifting plate 33 capable of being raised and lowered is mounted on the base plate 32. A servo motor 34 is mounted on the lifting plate 33, and a ring light source 35 is connected to the top rotor of the servo motor 34. The battery cell 7 to be glued can be placed on the light source. When the servo motor 34 operates, it can drive the ring light source 35 to rise and fall, so as to provide appropriate lighting while driving the battery cell 7 to rise and fall.

[0028] Each corner of the lifting plate 33 is connected to the top of the base plate 32 by multiple lifting guide rods 36. A vertical sliding plate 38 is slidably mounted on the base plate 32 via a horizontal slide rail 37 extending laterally. The sliding plate 38 is provided with inclined slide grooves 39 that run through its front and rear sides and have different heights at its left and right ends. At the same time, a sliding shaft 310 is installed on the bottom surface of the base plate 32. The sliding shaft 310 extends into the inclined slide groove 39. When the sliding plate 38 slides left and right along the horizontal slide rail 37, the inclined slide groove 39 moves accordingly. Since the two ends of the inclined slide groove 39 have different heights, it will pull the sliding shaft 310 to rise and fall, thereby pulling the lifting plate 33 and the servo motor 34, ring light source 35 and battery cell 7 on the lifting plate 33 to rise and fall to adjust its height.

[0029] Preferably, a limiting block 311 is provided on the front side of the sliding plate 38, and a limiting cylinder 312 is provided on the bottom plate 32. The limiting cylinder 312 corresponds to the limiting block 311, that is, the two are located on a horizontal line at the same height. When the sliding plate 38 slides, it can be blocked and limited by the contact between the limiting cylinder 312 and the limiting block 311.

[0030] like Figure 6 As shown, the adhesive rolling mechanism 4 includes two vertical support plates 41 arranged opposite each other and extending in the same direction. The two vertical support plates 41 are installed on the worktable 1, and the upper sides of the left and right ends of the two vertical support plates 41 are respectively connected to the two sides of the same front-to-back extending rolling roller 42, that is, two front-to-back extending rolling rollers 42 are installed together above the left and right ends of the two vertical support plates 41.

[0031] Each of the left and right ends of the two vertical support plates 41 is slidably mounted on both sides of the same sliding frame 43, meaning that two sliding frames 43 are jointly mounted on the left and right ends of the two vertical support plates 41. Two horizontally extending outer slide rails 46 and two sliding air rods 47 are respectively installed on the opposite sides of the two vertical support plates 41. The bottom sides of the two sliding frames 43 are slidably mounted on the two outer slide rails 46, and the two sliding frames 43 are respectively connected to the piston rods of the two sliding air rods 47. Therefore, under the operation of the two sliding air rods 47, the two sliding frames 43 can be driven to slide left and right along the two outer slide rails 46 respectively.

[0032] Two lifting cylinders 44 are connected to opposite sides of the upper end of the two sliding frames 43 respectively. The bottom piston rods of the two lifting cylinders 44 are connected to two wheel frames 48 respectively. Two rolling rollers 45 are installed at the bottom of the two wheel frames 48 respectively. The two rolling rollers 45 are located above the two rolling rollers 42 respectively. The operation of the two lifting cylinders 44 can drive the two wheel frames 48 and the two rolling rollers 45 to rise and fall respectively.

[0033] Thus, the two rolling rollers 45 can move directly above the two rolling rollers 42 as the two sliding frames 43 slide, and can also be raised and lowered as the two lifting cylinders 44 operate.

[0034] When using the adhesive rolling mechanism 4, the adhesive film 6 passes over the two rolling rollers 42 along with the material belt, while the battery cell 7 passes under the two rolling rollers 42 and rises at the position where rolling is required. Then, the two rolling rollers 45 move horizontally and vertically to roll the adhesive film 6 between the two rolling rollers 42, thereby adhering the adhesive film 6 to the battery cell 7.

[0035] like Figure 7 As shown, the laser adhesive cutting mechanism 5 includes a column 51, which is set on the worktable 1 and has a handwheel 54 on its top. A liftable optical bench 52 is installed on the side of the column 51, and a laser galvanometer 53 is installed at the end of the optical bench 52. The laser galvanometer 53 is located directly above the two rollers 42 of the adhesive rolling mechanism 4.

[0036] The optical bench 52 can be raised and lowered by operating the handwheel 54, thereby adjusting the height of the laser galvanometer 53. The operation of the laser galvanometer 53 can perform adhesive cutting on the battery cell 7 after the film is applied below. During the process, the laser galvanometer 53 will use a laser to cut the required size in the middle of the adhesive film 6 on the battery cell 7, while the two sides of the adhesive film 6 will not be completely cut off.

[0037] The workflow for cutting and applying adhesive using this laser film cutting and adhesive equipment mainly includes the following steps: S1: The feeding rack 21 of the feeding mechanism 2 is used to feed the adhesive film 6 with adhesive, so that the adhesive film 6 passes through the adhesive rolling mechanism 4 and the laser adhesive cutting mechanism 5 in sequence. At the same time, the battery cell 7 to be coated is placed on the ring light source 35 of the transfer mechanism 3 and transferred from the feeding rack 21 to the receiving rack 22 by the servo slide 31, passing under the adhesive rolling mechanism 4 and the laser adhesive cutting mechanism 5. S2: The released adhesive film 6 passes directly above the two rollers 42 of the adhesive rolling mechanism 4, while the battery cell 7 passes directly below the two rollers 42 along with the ring light source 35 of the transfer mechanism 3. At this time, when the servo motor 34 is running, the battery cell 7 rises and approaches the adhesive film 6. The two rollers 45 move and roll the adhesive film 6 between the two rollers 42, thereby attaching the adhesive film 6 to the battery cell 7. S3: The handwheel 54 of the column 51 of the laser cutting mechanism 5 is operated to adjust the optical bench 52 and the laser galvanometer 53 on it to a suitable height. Then the laser galvanometer 53 operates to cut the adhesive film 6 attached to the battery cell 7. The required size is cut in the middle of the adhesive film 6, while the two sides of the adhesive film 6 are not completely cut off to facilitate the subsequent winding of the remaining material of the adhesive film 6. S4: The residual adhesive of the cut adhesive film 6 is collected by the feeding rack 21 of the feeding mechanism 2, and the battery cell 7 after film application and adhesive cutting is collected from the lifting plate 33 of the transfer mechanism 3. S5: Flip the battery cell 7 to the other side, and repeat steps S1 to S4 to complete the film application and adhesive cutting work on the other side of the battery cell 7. S6: Repeat steps in S5 multiple times until the film application and adhesive cutting work is completed on all the surfaces of cell 7 that require film application and adhesive cutting.

[0038] The laser film cutting and adhesive application equipment of this invention has the following beneficial effects: 1. In this equipment, by coordinating the feeding and receiving mechanism, the transfer mechanism, the adhesive rolling mechanism, and the laser adhesive cutting mechanism, specifically, the feeding rack of the feeding and receiving mechanism feeds the adhesive film, the transfer mechanism transfers the battery cell, the adhesive rolling mechanism applies the adhesive film to the battery cell, the laser adhesive cutting mechanism cuts the applied adhesive film, and finally the receiving rack of the feeding and receiving mechanism collects the cut adhesive film and collects the battery cell after film application and cutting. This enables automated feeding and receiving, transfer and alignment, adhesive rolling, and adhesive surface cutting of lithium battery cell products. 2. By integrating the transfer mechanism, adhesive rolling mechanism, laser adhesive cutting mechanism, and material handling mechanism into one workbench, working space is saved; 3. Automated film application results in a smooth, bubble-free finish, improving product yield and reducing processing costs; 4. Multi-sided film application of products can be completed through repetitive work.

[0039] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A laser film cutting and adhesive application device, characterized in that: include Workbench (1); The feeding and receiving mechanism (2) includes a feeding rack (21) and a receiving rack (22) respectively installed at the left and right ends of the workbench (1). A feeding roller (23) and multiple feeding rollers (24) are installed on the front side of the feeding rack (21), and a receiving roller (27) is installed on the front side of the receiving rack (22). The transfer mechanism (3) includes a servo slide (31) extending to the left and right. The servo slide (31) is installed on the worktable (1) and located between the feeding rack (21) and the receiving rack (22). A base plate (32) is installed on the servo slide (31). A lifting plate (33) that can be raised and lowered is installed on the base plate (32). A ring light source (35) that can be raised and lowered is installed on the lifting plate (33) through a servo motor (34). The adhesive rolling mechanism (4) includes two vertical support plates (41) installed on the workbench (1) and arranged opposite each other. Two rolling rollers (42) extending forward and backward are fixedly installed on the top of the left and right ends of the two vertical support plates (41) respectively, and each of them is slidably installed with a sliding frame (43). The upper part of the opposite side of the two sliding frames (43) is connected to two rolling wheels (45) by two lifting cylinders (44). Both rolling wheels (45) can move directly above the two rolling rollers (42) and be lifted. The laser cutting mechanism (5) includes a column (51) mounted on the worktable (1), a liftable optical bench (52) is mounted on the side of the column (51), and a laser galvanometer (53) is mounted at the end of the optical bench (52). The laser galvanometer (53) is located directly above the two rollers (42).

2. The laser film cutting and adhesive application equipment according to claim 1, characterized in that: The front side of the feeding rack (21) is provided with a vertical lifting slide rail (25), and a lifting roller (26) is slidably installed on the lifting slide rail (25).

3. The laser film cutting and adhesive application equipment according to claim 1, characterized in that: Sensors (28) are installed on the receiving rack (22).

4. The laser film cutting and adhesive application equipment according to claim 1, characterized in that: Each corner of the lifting plate (33) is connected to the top of the base plate (32) by multiple lifting guide rods (36). A sliding plate (38) is slidably installed on the base plate (32) via a transverse slide rail (37). The sliding plate (38) is provided with inclined slide grooves (39) with different heights at the left and right ends. A sliding shaft (310) is installed on the bottom surface of the lifting plate (33) and extends into the inclined slide groove (39).

5. The laser film cutting and adhesive application equipment according to claim 1, characterized in that: A limiting block (311) is provided on the front side of the sliding plate (38), and a limiting cylinder (312) is installed on the base plate (32) opposite to the limiting block (311).

6. The laser film cutting and adhesive application equipment according to claim 1, characterized in that: Two horizontally extending outer slide rails (46) and two sliding air rods (47) are respectively installed on the opposite sides of the two vertical support plates (1). The front and rear sides of the two sliding frames (3) are respectively installed on the two outer slide rails (46) and respectively connected to the two sliding air rods (47).

7. The laser film cutting and adhesive application equipment according to claim 1, characterized in that: The bottom of each of the two lifting cylinders (44) is connected to a wheel frame (48), and the two rolling wheels (45) are respectively installed at the bottom of the two wheel frames (48).

8. A laser film cutting and adhesive application device according to claim 1, characterized in that: The top of the column (51) has a handwheel (54).

9. A film cutting and adhesive application method for a laser film cutting and adhesive application device according to any one of claims 1-8, characterized in that: Includes the following steps S1: Use the feeding rack (21) to feed the adhesive film (6), and at the same time place the battery cell (7) on the ring light source (35) and move it by the servo slide (31); S2: The adhesive film (6) moves to the top between the two rollers (42), while the battery cell (7) moves to the bottom between the two rollers (42). The servo motor (34) operates to lift the battery cell (7), and the two rollers (45) move and press down to adhere the adhesive film (6) to the battery cell (7). S3: The laser galvanometer (53) operates to cut the adhesive film (6) attached to the battery cell (7), cutting a specified size in the middle of the adhesive film (6), and the two sides of the adhesive film (6) are not completely cut off. S4: Use the receiving rack (22) to collect the residual adhesive of the adhesive film (6) and at the same time collect the battery cell (7).

10. The film cutting and adhesive application method of a laser film cutting and adhesive application device according to claim 9, characterized in that: It also includes the following steps S5: After flipping the battery cell (7) to the other side, repeat steps S1~S4 to complete the film application and adhesive cutting on the other side of the battery cell (7); S6: Repeat step S5 multiple times until the film is applied and the adhesive is cut on all sides of the battery cell (7).

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