Lithium battery top cover film covering device

Abstract

The invention discloses a lithium battery top cover film covering device, and belongs to the technical field of lithium battery processing. Comprising a base frame, a lifting frame and a cantilever fixed on the lifting frame, the positioning pressing plate is movably installed on the lifting frame and controlled by the positioning driving assembly. A positioning platform and a positioning pressing plate are arranged on the lifting frame, and notches which are opposite up and down are formed in one side edge of the positioning platform; the covering film penetrates through the position between the positioning platform and the positioning pressing plate. The cutter assembly is mounted on one side of the positioning platform; the sliding frame is slidably mounted on the cantilever; a row of clamping jaws which are uniformly distributed and are used for clamping a covering film are fixed on the sliding frame; the tensioning driving assembly is used for driving the sliding frame to move along the cantilever. The automatic film coating machine is high in automation degree, automatic positioning, tensioning and cutting of a film can be achieved, and the production efficiency is improved; the positioning pressing plate and the positioning platform are of a notch matching structure, positioning is accurate, film cutting deviation is avoided, and the positioning pressing plate and the positioning platform can be matched with the clamping jaw so that the clamping jaw can smoothly and accurately clamp the film.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery processing, and in particular to a lithium battery top cover coating device. Background Art

[0002] Top cover lamination is an important process in the production and packaging of lithium batteries. In the existing automated lamination device design, the corresponding length of lamination is generally pulled out by the clamping jaws, and then cut by the tool, so that the lamination covers the top of the lithium battery. In the actual operation process, the lamination at the tool lacks effective positioning, which leads to uneven cutting, which also increases the difficulty of the subsequent clamping jaws to accurately clamp the edge of the lamination fracture, further affecting production efficiency. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the present invention provides a lithium battery top cover coating device.

[0004] The present invention adopts the following technical solution: a lithium battery top cover coating device, comprising a base frame and a lifting frame slidably mounted on the base frame, and a cantilever extending to one side of the base frame is fixed on the lifting frame; Also includes: A positioning platen is movably mounted on the lifting frame; the lifting frame is provided with a positioning platform, which is relatively arranged below the positioning platen, and one side of the positioning platen and the positioning platform close to the cantilever is provided with upper and lower opposite evenly distributed notches; the coating passes through between the positioning platform and the positioning platen and extends toward the cantilever; A positioning drive assembly, used for driving the positioning platen to move toward the positioning platform to press the film; A cutter assembly is slidably mounted on one side of the positioning platform close to the cantilever and is used to cut off the coating; A slide is slidably mounted on the cantilever; a row of evenly distributed clamping claws for clamping the film is fixed on the slide; The tensioning drive assembly is used to drive the slide to move along the cantilever; when the tensioning drive assembly drives the slide to a position close to the lifting frame, the clamping claws enter the slots of the positioning plate and the positioning platform one by one.

[0005] It is further that: the lifting frame includes vertical slide plates fixed on both sides of the positioning platform, and the outer side surfaces of the vertical slide plates are slidably connected to the base frame; a longitudinal beam is arranged above the positioning platform, and the two ends of the longitudinal beam are fixedly connected to the vertical slide plates on both sides.

[0006] The base frame is provided with a lifting drive device for driving the lifting frame; The lifting drive device includes vertical chains vertically installed on both sides of the base frame, and the vertical chains are fixedly connected to the vertical slide plates on the same side; a lifting drive shaft is rotatably installed at the lower end of the base frame, and driving sprockets connected to the vertical chains on both sides are fixed on the lifting drive shaft, and one end of the lifting drive shaft is connected to a lifting drive motor.

[0007] The positioning drive assembly comprises a plurality of vertically arranged positioning cylinders fixed on the side of the longitudinal beam, and the output shafts of the positioning cylinders are fixedly connected to the positioning pressure plate.

[0008] A cantilever is fixed on each of the vertical slides, the two cantilevers are fixedly connected by a longitudinal rod, and the two ends of the slide are slidably connected to the cantilevers on both sides respectively; The tensioning drive assembly includes a horizontal chain horizontally installed on the sides of the two cantilevers, and the horizontal chain is fixedly connected to the end of the slide on the same side; a horizontal drive shaft is rotatably installed between the two vertical slides, and a drive sprocket is fixed on the horizontal drive shaft that is respectively connected to the horizontal chains on both sides, and one end of the horizontal drive shaft is connected to a horizontal drive motor.

[0009] A plurality of steering rollers are rotatably mounted between the two vertical slides. The steering rollers are arranged on a side of the positioning platform away from the cutter assembly. The coating passes around the steering rollers in sequence and then enters the side surface of the positioning platform horizontally.

[0010] The clamp includes a U-shaped plate fixed to the slide, the opening of the U-shaped plate is opposite to the slots of the positioning plate and the positioning platform, and the width of the U-shaped plate is smaller than the width of the slots of the positioning plate and the positioning platform; A vertically arranged clamping cylinder is fixed to the upper side plate of the U-shaped plate, and the output shaft of the clamping cylinder extends into the U-shaped plate; a pressure block is fixed to the end of the output shaft of the clamping cylinder.

[0011] The pressing block is cylindrical, and a countersunk hole is provided on the lower end surface of the pressing block. A top pressure head is slidably installed in the countersunk hole. The end of the top pressure head away from the countersunk hole is hemispherical, and a push spring is installed in the countersunk hole. The end of the lower side plate of the U-shaped plate has an inclined section that is inclined downward, and a portion of the pressing block close to the positioning platform is opposite to the inclined section.

[0012] A threaded hole is provided at the upper end of the pressure block, which is coaxial and connected with the countersunk hole. The pressure block is installed on the output shaft of the clamping cylinder through the threaded hole. The push spring is pressed between the output shaft of the clamping cylinder and the top pressure head. The outer end of the countersunk hole of the pressure block has a limiting step that cooperates with the top pressure head.

[0013] The cutter assembly comprises a slide rail fixed on one side of the lifting frame, a slider is slidably mounted on the slide rail, and a cutter is mounted on the upper end of the slider.

[0014] The beneficial effects of the present invention are: high degree of automation, capable of realizing automatic positioning, tensioning and cutting of the coating, thereby improving production efficiency; by adjusting the height of the lifting frame and the stroke of the tensioning drive assembly, it can adapt to coatings and battery packs of different sizes; the positioning plate and the positioning platform adopt a slot matching structure to ensure the accurate positioning of the coating before cutting, avoiding cutting deviations caused by inaccurate positioning, and can cooperate with the clamping claws so that the clamping claws can smoothly and accurately clamp the coating; by arranging a push spring and a top pressure head, when the clamping cylinder retracts, the top pressure head can push down the coating bonded to the pressure block, ensuring the timely release of the coating and the accuracy of the falling position, making the coating release smoother, reducing the downtime caused by coating adhesion, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 The present invention is a three-dimensional diagram of a lithium battery top cover coating device.

[0017] Figure 2 The present invention is a front view of a lithium battery top cover coating device.

[0018] Figure 3 The three-dimensional structure of the lifting frame and the cantilever part of the present invention Figure 1 .

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] Figure 5 The three-dimensional structure of the lifting frame and the cantilever part of the present invention Figure 2 .

[0021] Figure 6 It is a front view of the lifting frame and cantilever part of the present invention.

[0022] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0023] Figure 8 It is a top view of the lifting frame and cantilever part of the present invention.

[0024] Fig. 9 It is a left side view of the lifting frame and cantilever part of the present invention.

[0025] Fig.10Schematic diagram of the structure of the clamp in another embodiment of the present invention.

[0026] Description of reference numerals: 1. Base frame; 2. Lifting frame; 21. Positioning platform; 22. Vertical slide plate; 23. Longitudinal beam; 24. Steering roller; 3. Cantilever; 31. Longitudinal rod; 4. Positioning plate; 5. Positioning drive assembly; 51. Positioning cylinder; 6. Slide; 61. Clamping claw; 611. U-shaped plate; 6111. Inclined section; 612. Clamping cylinder; 613. Pressing block; 614. Pressing head; 615. Push spring; 7. tensioning drive assembly; 71. horizontal chain; 72. horizontal drive shaft; 73. horizontal drive motor; 8. Cutter assembly; 81. Slide rail; 82. Sliding block; 83. Cutter; 9. Lifting drive device; 91. Vertical chain; 92. Lifting drive shaft; 93. Lifting drive motor. DETAILED DESCRIPTION

[0027] 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.

[0028] Embodiment 1: like Figure 1 , Figure 2 As shown, the present invention provides a lithium battery top cover coating device, including a base frame 1, a lifting frame 2 is slidably installed on the base frame 1, and a pair of cantilevers 3 extending to the front side of the base frame 1 are fixed on the lifting frame 2. A positioning plate 4 is installed on the lifting frame 2, which is used to press the part of the coating to be cut on the lifting frame 2. A slide 6 is installed on the cantilever 3, and a clamping claw 61 is installed on the slide 6. The clamping claw 61 clamps the end of the coating and pulls the part of the coating to be cut above the battery pack. A cutter assembly 8 is installed on the front side of the lifting frame 2 to cut the coating.

[0029] The base frame 1 is a square frame structure, and the lifting drive device 9 is installed on the base frame 1 to drive the lifting of the lifting frame 2. The lifting drive device 9 includes two symmetrical vertical chains 91 installed on both sides of the base frame 1. The upper end of the vertical chain 91 is installed through a driven sprocket, and the lower end is installed through a driving sprocket; the vertical chain 91 is fixed to the end of the lifting frame 2 on the same side. A lifting drive shaft 92 is rotatably installed at the lower end of the base frame 1, and the driving sprockets on both sides are installed on the lifting drive shaft 92. One end of the lifting drive shaft 92 is connected to a lifting drive motor 93, and the lifting drive motor 93 is fixed to the side of the base frame 1. The up and down movement of the lifting frame 2 can be controlled by the lifting drive motor 93, the lifting drive shaft 92 and the vertical chain 91.

[0030] Combination Figures 3 to 7 As shown, the lifting frame 2 includes a positioning platform 21, and two vertical slides 22 symmetrically fixed on both sides of the positioning platform 21. The outer side of the vertical slide 22 is fixed with a sliding pad that slides with the base frame 1, and the outer side of the vertical slide 22 is also fixedly connected to the vertical chain 91 on the corresponding side. A longitudinal beam 23 is arranged above the positioning platform 21, and the two ends of the longitudinal beam 23 are fixedly connected to the vertical slides 22 on both sides.

[0031] The positioning drive assembly 5 is installed on the lifting frame 2, and is used to drive the positioning pressure plate 4 to move up and down to compress or release the coating. The positioning drive assembly 5 includes four positioning cylinders 51 fixed to the front side of the longitudinal beam 23, and the piston rods of the positioning cylinders 51 are arranged vertically downward, and the positioning pressure plate 4 is fixed to the lower end of the piston rod of each positioning cylinder 51. The positioning pressure plate 4 is opposite to the positioning platform 21 up and down, and the front sides of the positioning pressure plate 4 and the positioning platform 21 are provided with uniformly distributed and vertically opposite grooves. A plurality of steering rollers 24 are arranged on the rear side of the longitudinal beam 23, and the two ends of the steering rollers 24 are rotatably mounted on the slide plate 22. The coating bypasses the steering rollers 24 in turn and then enters the upper side of the positioning platform 21 horizontally, and then passes between the positioning platform 21 and the positioning pressure plate 4 and extends toward the cantilever 3.

[0032] Combination Figures 3 to 9 As shown, the tensioning drive assembly 7 is installed on the two cantilevers 3 to drive the slide 6 to move along the cantilever 3. The two cantilevers 3 are fixedly connected by a plurality of longitudinal rods 31 to form a stable frame structure. The tensioning drive assembly 7 includes a horizontal chain 71 installed horizontally on the cantilever 3 on both sides, and the front end of the horizontal chain 71 and the vertical chain 91 are installed through a driven sprocket, and the rear end is installed through a driving sprocket. The horizontal drive shaft 72 is rotatably installed between the two vertical slides 22, and the driving sprocket at the rear end of the horizontal chain 71 is fixedly installed on the horizontal drive shaft 72. A horizontal drive motor 73 driving the horizontal drive shaft 72 is fixed on the longitudinal beam 23. The two ends of the slide 6 are respectively slidably connected to the cantilever 3 on both sides, and are fixedly connected to the horizontal chain 71 on the same side. The forward and backward movement of the slide 6 can be controlled by the horizontal drive motor 73, the horizontal drive shaft 72 and the horizontal chain 71.

[0033] A row of evenly distributed clamping jaws 61 for clamping the coating is fixed on the carriage 6. The clamping jaws 61 include a U-shaped plate 611 fixed on the carriage 6, the opening of the U-shaped plate 611 is opposite to the slots of the positioning platen 4 and the positioning platform 21, and the width of the U-shaped plate 611 is smaller than the slot width of the positioning platen 4 and the positioning platform 21. The clamping cylinder 612 is vertically arranged and installed on the upper side plate of the U-shaped plate 611, the output shaft of the clamping cylinder 612 extends into the U-shaped plate 611, and the pressing block 613 is fixed on the output shaft of the clamping cylinder 612. The clamping cylinder 612 can control the pressing block 613 to move toward the lower side plate of the U-shaped plate 611 to compress or release the coating.

[0034] Working principle: The lifting frame 2 is controlled to move upward to a suitable height through the lifting drive motor 93, the lifting drive shaft 92 and the vertical chain 91, and the battery pack to be packaged is moved under the cantilever 3; At this time, the fracture edge of the coating is pressed between the positioning platen 4 and the positioning platform 21, and is partially located in the notch; under the clamping of the positioning platen 4 and the positioning platform 21, the fracture edge of the coating can be smoothly supported in the notch; The carriage 6 is controlled to move backward by the horizontal drive motor 73, the horizontal drive shaft 72 and the horizontal chain 71, and the clamping jaws 61 enter the notches of the positioning plate 4 and the positioning platform 21 one by one, and the film in the notch can smoothly enter the U-shaped plate 611 of the clamping jaw 61; the clamping cylinder 612 extends, and the pressing block 613 presses the film at the notch position; Then, the positioning cylinder 51 retracts, the positioning platen 4 leaves the positioning platform 21, and the film is released; then, the horizontal drive motor 73, the horizontal drive shaft 72 and the horizontal chain 71 control the carriage 6 to move forward and pull out the film; After the slide 6 reaches the predetermined position, the positioning cylinder 51 extends and the positioning pressure plate 4 re-presses the film; the cutter assembly 8 moves longitudinally along the positioning platform 21 to cut off the film at the positioning platform 21; then, the clamping cylinder 612 retracts and the pressure block 613 releases the film so that the film covers the battery pack; finally, the battery pack moves to the next station for the next packaging process.

[0035] Embodiment 2: Based on the above embodiment 1, Fig.10As shown, in this embodiment, the pressing block 613 is cylindrical, and a countersunk hole is provided on the lower end surface of the pressing block 613. The lower end of the countersunk hole has a limiting step. A threaded hole is provided on the upper end of the pressing block 613. The threaded hole is coaxial with and communicates with the countersunk hole, and the diameter of the threaded hole is slightly larger than the diameter of the countersunk hole. The top pressure head 614 is installed from the threaded hole to the countersunk hole, and the limiting step is used to limit the top pressure head 614 from being separated from the countersunk hole; the lower end of the top pressure head 614 is hemispherical. The pressing block 613 is installed on the output shaft of the clamping cylinder 612 through the threaded hole, and a push spring 615 is installed in the countersunk hole, and the push spring 615 is pressed between the output shaft of the clamping cylinder 612 and the top pressure head 614. The end of the lower side plate of the U-shaped plate 611 has a downwardly inclined inclined section 6111, and a part of the pressing block 613 close to the positioning platform 21 is opposite to the inclined section 6111.

[0036] When the clamping cylinder 612 retracts and the pressing block 613 releases the film, the film is easy to adhere to the pressing block 613 or the bottom of the U-shaped plate 611, affecting the falling position of the film; therefore, in this embodiment, an inclined section 6111 is provided at the end of the lower side plate of the U-shaped plate 611, so that the film can be more easily adhered to the pressing block 613. During the rising process of the pressing block 613, the top pressure head 614 is pushed out by the push spring 615, thereby pushing the film down, so that the film is released in time, ensuring that the falling position of the film is more accurate, and facilitating the smooth progress of the next packaging process of the battery pack.

[0037] Embodiment three: Based on the above embodiment 1, Figures 3 to 7 As shown, the cutter assembly 8 is arranged at the front side of the positioning platform 21. The cutter assembly 8 includes a slide rail 81 fixed between two vertical slide plates 22, a slider 82 is slidably mounted on the front side of the slide rail 81, a cutter 83 is mounted on the upper end of the slider 82, and the cutter 83 is located at the front side of the positioning platform 21; when the cutter 83 and the slider 82 move along the slide rail 81, the cutter 83 will cut off the coating on the front side of the positioning platform 21. In this embodiment, a rodless cylinder is installed inside the slide rail 81 to drive the slider 82 to move; the structure of the slide rail and the rodless cylinder is relatively simple, which ensures the stability of the cutter during the cutting process, so that the cutter can quickly and accurately complete the cutting action.

[0038] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A lithium battery top cover coating device, comprising a base frame and a lifting frame slidably mounted on the base frame, wherein a cantilever extending toward one side of the base frame is fixed on the lifting frame; It is characterized in that Also includes: A positioning platen is movably mounted on the lifting frame; the lifting frame is provided with a positioning platform, which is relatively arranged below the positioning platen, and one side of the positioning platen and the positioning platform close to the cantilever is provided with upper and lower opposite evenly distributed notches; the coating passes through between the positioning platform and the positioning platen and extends toward the cantilever; A positioning drive assembly, used for driving the positioning platen to move toward the positioning platform to press the film; A cutter assembly is slidably mounted on one side of the positioning platform close to the cantilever and is used to cut off the coating; A slide is slidably mounted on the cantilever; a row of evenly distributed clamping claws for clamping the film is fixed on the slide; The tensioning drive assembly is used to drive the slide to move along the cantilever; when the tensioning drive assembly drives the slide to a position close to the lifting frame, the clamping claws enter the slots of the positioning plate and the positioning platform one by one.

2. A lithium battery top cover coating device according to claim 1, characterized in that: The lifting frame includes vertical slide plates fixed on both sides of the positioning platform, and the outer side surfaces of the vertical slide plates are slidably connected to the base frame; a longitudinal beam is arranged above the positioning platform, and the two ends of the longitudinal beam are fixedly connected to the vertical slide plates on both sides.

3. A lithium battery top cover coating device according to claim 2, characterized in that: The base frame is provided with a lifting drive device for driving the lifting frame; The lifting drive device includes vertical chains vertically installed on both sides of the base frame, and the vertical chains are fixedly connected to the vertical slide plates on the same side; a lifting drive shaft is rotatably installed at the lower end of the base frame, and driving sprockets connected to the vertical chains on both sides are fixed on the lifting drive shaft, and one end of the lifting drive shaft is connected to a lifting drive motor.

4. A lithium battery top cover coating device according to claim 2, characterized in that: The positioning drive assembly comprises a plurality of vertically arranged positioning cylinders fixed on the side of the longitudinal beam, and the output shafts of the positioning cylinders are fixedly connected to the positioning pressure plate.

5. A lithium battery top cover coating device according to claim 2, characterized in that: A cantilever is fixed on each of the vertical slides, the two cantilevers are fixedly connected by a longitudinal rod, and the two ends of the slide are slidably connected to the cantilevers on both sides respectively; The tensioning drive assembly includes a horizontal chain horizontally installed on the sides of the two cantilevers, and the horizontal chain is fixedly connected to the end of the slide on the same side; a horizontal drive shaft is rotatably installed between the two vertical slides, and a drive sprocket is fixed on the horizontal drive shaft that is respectively connected to the horizontal chains on both sides, and one end of the horizontal drive shaft is connected to a horizontal drive motor.

6. A lithium battery top cover coating device according to claim 2, characterized in that: A plurality of steering rollers are rotatably mounted between the two vertical slides. The steering rollers are arranged on a side of the positioning platform away from the cutter assembly. The coating passes around the steering rollers in sequence and then enters the side surface of the positioning platform horizontally.

7. A lithium battery top cover coating device according to claim 1, characterized in that: The clamp includes a U-shaped plate fixed to the slide, the opening of the U-shaped plate is opposite to the slots of the positioning plate and the positioning platform, and the width of the U-shaped plate is smaller than the width of the slots of the positioning plate and the positioning platform; A vertically arranged clamping cylinder is fixed to the upper side plate of the U-shaped plate, and the output shaft of the clamping cylinder extends into the U-shaped plate; a pressure block is fixed to the end of the output shaft of the clamping cylinder.

8. A lithium battery top cover coating device according to claim 7, characterized in that: The pressing block is cylindrical, and a countersunk hole is provided on the lower end surface of the pressing block. A top pressure head is slidably installed in the countersunk hole. The end of the top pressure head away from the countersunk hole is hemispherical, and a push spring is installed in the countersunk hole. The end of the lower side plate of the U-shaped plate has an inclined section that is inclined downward, and a portion of the pressing block close to the positioning platform is opposite to the inclined section.

9. A lithium battery top cover coating device according to claim 8, characterized in that: A threaded hole is provided at the upper end of the pressure block, which is coaxial and connected with the countersunk hole. The pressure block is installed on the output shaft of the clamping cylinder through the threaded hole. The push spring is pressed between the output shaft of the clamping cylinder and the top pressure head. The outer end of the countersunk hole of the pressure block has a limiting step that cooperates with the top pressure head.

10. A lithium battery top cover coating device according to claim 1, characterized in that: The cutter assembly comprises a slide rail fixed on one side of the lifting frame, a slider is slidably mounted on the slide rail, and a cutter is mounted on the upper end of the slider.

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