An apparatus for the production of a separator from ultra-high molecular weight polyethylene

Abstract

The application relates to the technical field of lithium battery diaphragm production, and discloses a production device for diaphragm made of ultrahigh molecular weight polyethylene, which comprises a bottom plate, a driving mechanism arranged on the top of the bottom plate, a motor, a first gear installed at the two ends of the shaft of the motor, a turning mechanism arranged on the top of the driving mechanism, two rotating discs, grooves arranged on the top and the bottom of the rotating discs, a winding mechanism arranged outside the turning mechanism, two winding rollers, bearings installed at the two ends of the winding rollers, and second gears installed outside the winding rollers. When the winding of the winding rollers at the bottom is completed, the rotating disc is rotated to exchange the positions of the upper winding roller and the lower winding roller, the winding of the lower winding roller is continuously carried out, the upper winding roller is replaced during the winding of the lower winding roller, time is saved, and the work efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of lithium battery separator production technology, specifically, it relates to a production apparatus for ultra-high molecular weight polyethylene separators. Background Technology

[0002] Ultra-high molecular weight polyethylene (UHMWPE) separators are high-end separators suitable for use in high-efficiency, high-power batteries. In recent years, with the rapid development of new energy vehicles, the safety of power batteries has received significant attention, thus placing higher demands on separator performance. UHMWPE's high molecular weight gives it an advantage in preparing lithium-ion battery separators, exhibiting superior wear resistance, impact resistance, chemical corrosion resistance, low-temperature resistance, and mechanical and heat resistance compared to ordinary PE and PP, resulting in excellent overall performance. UHMWPE separators are high-end products in lithium-ion battery separators, especially noteworthy for their gel-like melt at high temperatures, which prevents collapse and provides excellent safety protection against short circuits and explosions during overcharging or sudden temperature increases, making them particularly suitable for high-efficiency, high-power power batteries.

[0003] Currently, in the production of ultra-high molecular weight polyethylene (UHMWPE) separators, the produced separators need to be wound up for easy storage and transportation. They can then be cut to the required size as needed. However, the existing winding device requires the winding machine to be stopped for replacement after one winding roller has finished winding. Winding can only continue after the winding roller has been replaced. The winding roller is quite heavy after winding, making the replacement inconvenient and time-consuming, which reduces work efficiency.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0006] A production apparatus for ultra-high molecular weight polyethylene (UHMWPE) diaphragms includes a base plate, a drive mechanism is provided on the top of the base plate, the drive mechanism includes a motor, and first gears are installed at both ends of the motor shaft. The drive mechanism is used to provide power.

[0007] The drive mechanism is equipped with a steering mechanism at its top, and the steering mechanism includes two turntables, each with a groove at its top and bottom.

[0008] A winding mechanism is provided on the outside of the steering mechanism. The winding mechanism includes two winding rollers. Bearings are installed at both ends of the winding rollers. A second gear is installed on the outside of the bearings of the winding rollers. The second gear at the bottom meshes with the first gear. The winding rollers are located in the groove of the turntable, and the bearings at both ends of the winding rollers are located in the groove.

[0009] The steering mechanism rotates the turntable to change the position of the winding roller of the winding mechanism;

[0010] The top two ends of the base plate are provided with a release mechanism. The release mechanism includes a first support ring and a second support ring. One side of the first support ring is fixedly installed on one end of the first gear, and one side of the second support ring is fixedly installed on one end of the turntable. The upper and lower ends of the second support ring are provided with arc-shaped surfaces, which are adapted to the first support ring. The release mechanism is used to maintain a distance from the first gear when the turntable turns.

[0011] In a preferred embodiment of the present invention, a support frame is installed at both ends of the motor shaft, and a positioning block is installed on both sides of both ends of the support frame. A positioning rod is movably inserted into the positioning block, the bottom of the positioning rod is installed on the top of the base plate, and a first spring is movably sleeved on the positioning rod. The two ends of the first spring are respectively installed at the bottom of the positioning block and the top of the base plate.

[0012] In a preferred embodiment of the present invention, support plates are installed at both ends of the base plate, a connecting shaft is installed at the top between the two support plates, and the two turntables are respectively movably sleeved on both ends of the connecting shaft.

[0013] In a preferred embodiment of the present invention, a limiting ring is movably sleeved on the outer side of the turntable, the top of the limiting ring has a notch, the length of the notch is adapted to the outer diameter of the bearing, and a fixing plate is installed at the bottom of the limiting ring, the bottom of the fixing plate is installed on the top of the base plate.

[0014] In a preferred embodiment of the present invention, the two ends of the limiting ring are aligned with the two ends of the bearing, and one end of the turntable is located between the two ends of the bearing.

[0015] In a preferred embodiment of the present invention, two sets of slide rods are movably inserted into the support plate, each set of slide rods includes two slide rods, and the four slide rods are equipped with the same connecting rod at the end away from the turntable. A second locking block is installed between the two slide rods in the same set, and a second spring is movably sleeved on each slide rod. The two ends of the second spring are respectively fixedly installed on one side of the second locking block and one side of the support plate.

[0016] In a preferred embodiment of the present invention, two sets of first locking blocks are installed at one end of the turntable, and each set of first locking blocks includes two blocks. The distance between the two first locking blocks in the same set is adapted to the width of the second locking block. A washer ring is installed on the outer side of the first locking block, and the thickness of the washer ring is adapted to the thickness of the first locking block.

[0017] In a preferred embodiment of the present invention, a limiting frame is installed on the outer side of the support plate, and a sliding plate is movably inserted into the limiting frame. The sliding plate is located between the connecting rod and the support plate, and a guide slope is provided on the top of the sliding plate.

[0018] In a preferred embodiment of the present invention, a pull rod is rotatably connected to one side of the bottom of each of the two slide plates, a stop bar is installed between the two pull rods, a baffle is rotatably connected to one side of the top of the bottom plate, the top of the baffle is located on one side of the take-up roller, a connecting plate is installed on one side of the baffle, one side of the connecting plate is installed on one side of the stop bar, and a torsion spring is installed at the rotatable connection between the baffle and the bottom plate.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] When the bottom take-up roller finishes winding, the present invention rotates the turntable to exchange the positions of the upper and lower take-up rollers, and continues to wind the lower take-up roller. At the same time, the upper take-up roller is replaced during the winding process of the lower take-up roller, which saves time and improves work efficiency.

[0021] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] In the attached diagram:

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the motor in this invention;

[0025] Figure 3 This is a schematic diagram of the structure of the baffle in this invention;

[0026] Figure 4 This is a schematic diagram of the structure of the sliding plate part of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure at the first card block of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure at the second support ring of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure at the limiting ring of the present invention.

[0030] In the diagram: 1. Base plate; 2. Positioning rod; 3. Positioning block; 4. First spring; 5. Support frame; 6. Motor; 7. First gear; 8. First support ring; 9. Support plate; 10. Connecting shaft; 11. Turntable; 12. Groove; 13. Second support ring; 14. Arc-shaped surface; 15. Take-up roller; 16. Bearing; 17. Second gear; 18. Limiting ring; 19. Notch; 20. Fixing plate; 21. Washer ring; 22. First locking block; 23. Second locking block; 24. Slide rod; 25. Second spring; 26. Connecting rod; 27. Slide plate; 28. Guide slope; 29. ​​Limiting frame; 30. Pull rod; 31. Stop bar; 32. Connecting plate; 33. Baffle; 34. Torsion spring. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0032] Example 1:

[0033] like Figures 1 to 7 As shown, a production apparatus for ultra-high molecular weight polyethylene (UHMWPE) diaphragms includes a base plate 1, a drive mechanism is provided on the top of the base plate 1, the drive mechanism includes a motor 6, and first gears 7 are installed at both ends of the shaft of the motor 6. The drive mechanism is used to provide power.

[0034] A steering mechanism is provided on the top of the drive mechanism. The steering mechanism includes two turntables 11, and grooves 12 are provided on the top and bottom of the turntables 11.

[0035] A winding mechanism is provided on the outside of the steering mechanism. The winding mechanism includes two winding rollers 15. Bearings 16 are installed at both ends of the winding rollers 15. A second gear 17 is installed on the outside of the bearings 16 on the winding rollers 15. The second gear 17 at the bottom meshes with the first gear 7. The winding rollers 15 are located at the groove 12 of the turntable 11, and the bearings 16 at both ends of the winding rollers 15 are located in the groove 12.

[0036] The steering mechanism rotates the turntable 11 to change the position of the winding roller 15 of the winding mechanism;

[0037] The top two ends of the base plate 1 are provided with a release mechanism, which includes a first support ring 8 and a second support ring 13. One side of the first support ring 8 is fixedly installed on one end of the first gear 7, and one side of the second support ring 13 is fixedly installed on one end of the turntable 11. The upper and lower ends of the second support ring 13 are provided with arc-shaped surfaces 14, which are adapted to the first support ring 8. The release mechanism is used to maintain a distance from the first gear 7 when the turntable 11 turns.

[0038] like Figures 1 to 7As shown, in a specific embodiment, a support frame 5 is installed at both ends of the shaft of the motor 6. Positioning blocks 3 are installed on both sides of each end of the support frame 5. A positioning rod 2 is movably inserted into the positioning block 3. The bottom of the positioning rod 2 is installed on the top of the base plate 1. A first spring 4 is movably sleeved on the positioning rod 2. The two ends of the first spring 4 are respectively installed at the bottom of the positioning block 3 and the top of the base plate 1. In this configuration, when the turntable 11 completes a 180-degree rotation, the arc-shaped surface 14 is at the bottom. At this time, the elastic force of the first spring 4 lifts the positioning block 3, thereby causing the first gear 7 and its connecting components to move upwards, and causing the first support ring 8 to press against the arc-shaped surface 14. Simultaneously, the first gear 7 meshes with the second gear 17.

[0039] Example 2:

[0040] like Figures 1 to 7 As shown, in a specific embodiment, support plates 9 are installed at both ends of the base plate 1, and a connecting shaft 10 is installed at the top between the two support plates 9. Two turntables 11 are movably sleeved on both ends of the connecting shaft 10. A limiting ring 18 is movably sleeved on the outer side of the turntable 11. A notch 19 is provided at the top of the limiting ring 18, and the length of the notch 19 is adapted to the outer diameter of the bearing 16. A fixing plate 20 is installed at the bottom of the limiting ring 18, and the bottom of the fixing plate 20 is installed on the top of the base plate 1. The two ends of the limiting ring 18 are aligned with the two ends of the bearing 16, and one end of the turntable 11 is located between the two ends of the bearing 16. In this configuration, the take-up roller 15 is mounted on the turntable 11 through the bearing 16, thereby reducing the friction of the take-up roller 15 rotation. The limiting ring 18 is used to support the bearing 16, thereby preventing the take-up roller 15 from falling off.

[0041] Example 3:

[0042] like Figures 1 to 7As shown, in a specific embodiment, two sets of sliding rods 24 are movably inserted into the support plate 9. Each set of sliding rods 24 contains two rods. The four sliding rods 24 are connected to the same connecting rod 26 at the end away from the turntable 11. A second locking block 23 is installed between two sliding rods 24 in the same set. A second spring 25 is movably sleeved on each sliding rod 24. The two ends of the second spring 25 are respectively fixedly installed on one side of the second locking block 23 and one side of the support plate 9. Two sets of first locking blocks 22 are installed at one end of the turntable 11. Each set of first locking blocks 22 contains two blocks. The distance between two first locking blocks 22 in the same set is adapted to the width of the second locking block 23. A washer ring 21 is installed on the outside of the first locking block 22. The thickness of the washer ring 21 is adapted to the thickness of the first locking block 22. In this configuration, the connecting rod 26 pulls the second locking block 23 to move via the slide rod 24. When the diameter of the diaphragm roll increases to a certain extent, the second locking block 23 moves and disengages from the first locking block 22, thus unlocking the turntable 11. The turntable 11 is rotated 180 degrees, and the first locking block 22 and the washer ring 21 move with the turntable 11. The washer ring 21 abuts against the second locking block 23, preventing it from moving. When the turntable 11 completes a 180-degree rotation, the second locking block 23 re-engages between the first locking blocks 22 under the action of the second spring 25, thus locking the turntable 11 again.

[0043] like Figures 1 to 7 As shown, further, a limiting frame 29 is installed on the outer side of the support plate 9, and a sliding plate 27 is movably inserted into the limiting frame 29. The sliding plate 27 is located between the connecting rod 26 and the support plate 9. A guide slope 28 is provided on the top of the sliding plate 27. Further, a pull rod 30 is rotatably connected to one side of the bottom of the sliding plates 27 on both sides. A stop rod 31 is installed between the two pull rods 30. A baffle 33 is rotatably connected to one side of the top of the base plate 1. The top of the baffle 33 is located on one side of the take-up roller 15. A connecting plate 32 is installed on one side of the baffle 33. One side of the connecting plate 32 is installed on one side of the stop rod 31. A torsion spring 34 is installed at the rotatable connection between the baffle 33 and the base plate 1. In this configuration, during the winding process of the take-up roller 15, the diaphragm roll gradually increases in size and moves against one side of the baffle 33. The baffle 33 rotates around the torsion spring 34 and drives the stop rod 31 to rotate through the connecting plate 32. The stop rod 31 pulls the slide plate 27 down through the pull rod 30. During the descent of the slide plate 27, the guide slope 28 descends and drives the connecting rod 26 to move outward through the guide slope.

[0044] The implementation principle of the ultra-high molecular weight polyethylene (UHMWPE) diaphragm production device in this embodiment is as follows: During winding, the operator attaches one end of the diaphragm to the bottom winding roller 15, starts the motor 6, and the motor 6 rotates to drive the first gear 7 to rotate. The first gear 7 drives the second gear 17 to rotate through meshing, thereby causing the winding roller 15 to rotate and winding the diaphragm. At the same time, the winding roller 15 is mounted on the turntable 11 through the bearing 16, thereby reducing the friction of the winding roller 15 rotation. The limiting ring 18 is used to support the bearing 16, thereby preventing the winding roller 15 from falling off.

[0045] During the winding process of the take-up roller 15, the diaphragm roll gradually increases in size and moves against one side of the baffle 33. The baffle 33 rotates around the torsion spring 34 and drives the stop rod 31 to rotate through the connecting plate 32. The stop rod 31 pulls the slide plate 27 down through the pull rod 30. As the slide plate 27 descends, it drives the guide slope 28 down and drives the connecting rod 26 to move outward through the guide slope. The connecting rod 26 pulls the second locking block 23 to move through the slide rod 24. When the diameter of the diaphragm roll increases to a certain extent, the second locking block 23 moves and disengages from the first locking block 22. At this time, the motor 6 is disconnected and the diaphragm is cut. The disengagement of the first locking block 22 from the second locking block 23 unlocks the turntable 11. The turntable 11 is rotated 180 degrees, thereby rotating the already wound take-up roller 15 to the top and the unwound take-up roller 15 to the bottom. When the turntable 11 rotates, it drives the second support ring 13 to rotate. The second support ring 13 moves through the arc shape The surface 14 presses against the first support ring 8, thereby driving the first gear 7 and its connecting components to descend and maintain a distance from the turntable 11. At the same time, the first locking block 22 and the pad ring 21 move with the turntable 11. The pad ring 21 abuts against the second locking block 23, preventing it from moving. When the turntable 11 completes a 180-degree rotation, the arc-shaped surface 14 is at the bottom. At this time, the elastic force of the first spring 4 pushes up the positioning block 3, thereby causing the first gear 7 and its connecting components to move upward and causing the first support ring 8 to abut against the arc-shaped surface 14. At the same time, the first gear 7 meshes with the second gear 17. Under the action of the second spring 25, the second locking block 23 re-locks between the first locking blocks 22, so that the turntable 11 is locked again. At this time, the diaphragm is pasted on the bottom winding roller 15, and winding continues. During the winding process, the winding roller that has been wound up at the top is taken out from the notch 19 and replaced, which can reduce the downtime during winding replacement and improve winding efficiency.

Claims

1. A production apparatus for ultra-high molecular weight polyethylene (UHMWPE) diaphragms, comprising a base plate (1), characterized in that, A drive mechanism is provided on the top of the base plate (1). The drive mechanism includes a motor (6). A first gear (7) is installed at both ends of the shaft of the motor (6). The drive mechanism is used to provide power. A support frame (5) is installed at both ends of the shaft of the motor (6). A positioning block (3) is installed on both sides of both ends of the support frame (5). A positioning rod (2) is movably inserted on the positioning block (3). The bottom of the positioning rod (2) is installed on the top of the base plate (1). A first spring (4) is movably sleeved on the positioning rod (2). The two ends of the first spring (4) are respectively installed on the bottom of the positioning block (3) and the top of the base plate (1). A steering mechanism is provided on the top of the drive mechanism. The steering mechanism includes two turntables (11). The top and bottom of the turntables (11) are provided with grooves (12). A winding mechanism is provided on the outside of the steering mechanism. The winding mechanism includes two winding rollers (15). Bearings (16) are installed at both ends of the winding rollers (15). The take-up roller (15) is equipped with a second gear (17) on the outside of the bearing (16). The second gear (17) at the bottom meshes with the first gear (7). The take-up roller (15) is located in the groove (12) of the turntable (11), and the bearings (16) at both ends of the take-up roller (15) are located in the groove (12). The steering mechanism rotates the turntable (11) to change the position of the take-up roller (15) of the winding mechanism. The top two ends of the base plate (1) are provided with a release mechanism. The release mechanism includes a first support ring (8) and a second support ring (13). One side of the first support ring (8) is fixedly installed on one end of the first gear (7), and one side of the second support ring (13) is fixedly installed on one end of the turntable (11). The upper and lower ends of the second support ring (13) are provided with arc-shaped surfaces (14). The arc-shaped surfaces (14) are adapted to the first support ring (8). The release mechanism is used to keep a distance from the first gear (7) when the turntable (11) turns.

2. The production apparatus for ultra-high molecular weight polyethylene (UHMWPE) diaphragms according to claim 1, characterized in that, Support plates (9) are installed at both ends of the base plate (1), and a connecting shaft (10) is installed at the top between the two support plates (9). The two turntables (11) are respectively movably sleeved on both ends of the connecting shaft (10).

3. The production apparatus for ultra-high molecular weight polyethylene (UHMWPE) diaphragms according to claim 1, characterized in that, A limiting ring (18) is movably sleeved on the outer side of the turntable (11). The top of the limiting ring (18) has a notch (19). The length of the notch (19) is adapted to the outer diameter of the bearing (16). A fixing plate (20) is installed at the bottom of the limiting ring (18). The bottom of the fixing plate (20) is installed on the top of the base plate (1).

4. The production apparatus for ultra-high molecular weight polyethylene (UHMWPE) diaphragms according to claim 3, characterized in that, The two ends of the limiting ring (18) are aligned with the two ends of the bearing (16), and one end of the turntable (11) is located between the two ends of the bearing (16).

5. The production apparatus for ultra-high molecular weight polyethylene (UHMWPE) membranes according to claim 2, characterized in that, Two sets of slide rods (24) are movably inserted into the support plate (9). Each set of slide rods (24) contains two slide rods. The four slide rods (24) are connected to the same connecting rod (26) at the end away from the turntable (11). A second locking block (23) is installed between the two slide rods (24) in the same set. A second spring (25) is movably sleeved on each slide rod (24). The two ends of the second spring (25) are fixedly installed on one side of the second locking block (23) and one side of the support plate (9), respectively.

6. The production apparatus for ultra-high molecular weight polyethylene (UHMWPE) diaphragms according to claim 1, characterized in that, Two sets of first locking blocks (22) are installed at one end of the turntable (11), and each set of first locking blocks (22) contains two blocks. The distance between the two first locking blocks (22) in the same set is adapted to the width of the second locking block (23). A washer ring (21) is installed on the outside of the first locking block (22), and the thickness of the washer ring (21) is adapted to the thickness of the first locking block (22).

7. The production apparatus for ultra-high molecular weight polyethylene (UHMWPE) diaphragms according to claim 5, characterized in that, A limiting frame (29) is installed on the outside of the support plate (9). A sliding plate (27) is movably inserted into the limiting frame (29). The sliding plate (27) is located between the connecting rod (26) and the support plate (9). A guide slope (28) is provided on the top of the sliding plate (27).

8. The production apparatus for ultra-high molecular weight polyethylene (UHMWPE) diaphragms according to claim 7, characterized in that, A pull rod (30) is rotatably connected to one side of the bottom of each of the two slide plates (27). A stop rod (31) is installed between the two pull rods (30). A baffle (33) is rotatably connected to one side of the top of the base plate (1). The top of the baffle (33) is located on one side of the take-up roller (15). A connecting plate (32) is installed on one side of the baffle (33). One side of the connecting plate (32) is installed on one side of the stop rod (31). A torsion spring (34) is installed at the rotatable connection between the baffle (33) and the base plate (1).

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