Diaphragm cooling device

Abstract

The invention provides a diaphragm cooling device which comprises two bases, supporting plates are fixedly connected to the upper sides of the two bases, a casting roller is rotationally matched between the two supporting plates, mounting frames are fixedly connected to the upper ends of the two supporting plates, a longitudinal U-shaped frame is fixedly connected to one side of each mounting frame, and the longitudinal U-shaped frame is fixedly connected to the other side of each mounting frame. The inner wall of the longitudinal U-shaped frame is rotationally matched with a first lead screw. By arranging a two-dimensional adjusting structure and a self-driven cleaning mechanism arranged in a cooling roller, the core problem that a traditional cooling device is insufficient in cooling is effectively solved, the cooling roller is precisely and tightly attached to a casting roller and a diaphragm, the cooling uniformity of a diaphragm surface is guaranteed, and the problems of poor attachment of the diaphragm, bubbles, pits and chromatic aberration of the diaphragm surface are solved; meanwhile, scale on the inner wall of the cooling roller is continuously cleaned, the heat exchange efficiency of cooling water is guaranteed, the problem that scaling intensifies insufficient cooling is fundamentally solved, the diaphragm production qualification rate is increased, the production speed limitation is broken through, and the efficient production requirement is met.

Description

Technical Field

[0001] This invention relates to the field of lithium battery separator cooling technology, specifically a separator cooling device. Background Technology

[0002] The lithium battery separator cooling device is a key piece of equipment in the dry production process of lithium battery separators to achieve cooling and shaping of the membrane surface. It is mainly suitable for the production needs of lithium battery separators with a thickness of 3um-25um and a width of 150cm-850cm. The core consists of casting rollers, traction rollers, chillers and cooling rollers. The chiller delivers cooling water to the cooling rollers, and heat exchange is achieved through the contact between the cooling rollers and the separator. In conjunction with the transmission action of the traction rollers, the continuous cooling operation in the separator production is completed. It is an important supporting equipment to ensure the quality of separator forming and support the continuous operation of the production line.

[0003] The existing cooling device has shortcomings: the cooling effect of the two rollers of the casting traction is not good, resulting in poor adhesion between the B side of the diaphragm and the traction roller, air bubbles on the film surface, and uneven cooling can easily cause pits and color differences on the roller surface; at the same time, the inner wall of the cooling pipe of the cooling roller is prone to long-term scaling, which hinders the heat exchange efficiency of the cooling water and further aggravates the problem of insufficient cooling. This not only reduces the production qualification rate, but also limits the increase in production speed and cannot meet the needs of high-efficiency production. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a diaphragm cooling device to solve the problems mentioned in the background section. This invention features a novel structure. By incorporating a two-dimensional adjustment structure and a self-driven cleaning mechanism built into the cooling roller, it effectively improves the core problem of insufficient cooling in traditional cooling devices. This ensures precise and tight adhesion between the cooling roller, the casting roller, and the diaphragm, guaranteeing uniform cooling of the membrane surface and improving issues such as poor diaphragm adhesion, membrane surface bubbles, pits, and color differences. Simultaneously, it continuously cleans scale from the inner wall of the cooling roller, ensuring efficient heat exchange of the cooling water. This fundamentally addresses the problem of insufficient cooling caused by scaling, improving the diaphragm production qualification rate, breaking through production speed limitations, and meeting the demands of high-efficiency production.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a diaphragm cooling device comprising two bases, each base having a support plate fixedly connected to its upper side, a casting roller rotatably coupled between the two support plates, a mounting frame fixedly connected to the upper end of each support plate, a longitudinal U-shaped frame fixedly connected to one side of the mounting frame, a first lead screw rotatably coupled to the inner wall of the longitudinal U-shaped frame, a lifting seat threaded onto the first lead screw, a transverse U-shaped frame fixedly connected to one end of the lifting seat, a second lead screw rotatably coupled to the inner wall of the transverse U-shaped frame, a sliding seat threaded onto the second lead screw, a bearing support plate fixedly connected to one side of the sliding seat, mounting grooves formed at one end of both the longitudinal and transverse U-shaped frames, limit mechanisms provided inside both mounting grooves, a cooling roller rotatably coupled between the two bearing support plates, rotary joints installed at both ends of the cooling roller, and a cleaning mechanism provided inside the cooling roller.

[0006] Furthermore, the cooling roller is disposed on one side of the casting roller, and the cooling roller cooperates with the casting roller.

[0007] Furthermore, the limiting mechanism includes two rotating rods rotatably engaged with the lower side of the inner wall of the mounting groove. Each of the two rotating rods is fixedly connected to one side with an anti-slip clamp. A spring is installed between the two rotating rods. A winding reel is rotatably engaged with the lower side of the inner wall of the mounting groove. Both ends of the winding reel are fixedly connected with traction ropes. The upper end of the winding reel extends through to the outer side of the corresponding longitudinal U-shaped frame or transverse U-shaped frame and is fixedly connected with a knob.

[0008] Furthermore, the clamping ends of the two anti-slip clamps are respectively engaged with the outer ends of the corresponding first or second lead screw, the two ends of the spring are respectively fixedly connected to the corresponding rotating rod, and the opposite ends of the two traction ropes are respectively fixedly connected to the corresponding rotating rod.

[0009] Furthermore, anti-slip pads are fixedly connected to the clamping ends of both anti-slip clamps.

[0010] Furthermore, the cleaning mechanism includes two supports fixedly connected to the inner wall of the cooling roller, a reciprocating screw rotatably connected between the two supports, a ring frame threaded onto the reciprocating screw, an annular scraper fixedly connected to the outer side of the ring frame, a fan blade fixedly connected to one end of the reciprocating screw, trapezoidal guide rails fixedly connected to both sides of the inner wall of the cooling roller, and guide grooves adapted to the trapezoidal guide rails opened on both sides of the annular scraper.

[0011] Furthermore, the rotary joint at the liquid inlet end is coaxially arranged with the fan blade, the annular scraper is slidably fitted on the inner wall of the cooling roller, and the annular scraper and the inner wall of the cooling roller are in clearance fit.

[0012] Furthermore, trapezoidal limiting strips are fixedly connected to the inner walls of both the longitudinal U-shaped frame and the transverse U-shaped frame, and trapezoidal slots that slide in cooperation with the trapezoidal limiting strips are provided on one side of both the lifting seat and the sliding seat.

[0013] Furthermore, the outer ends of both the first and second lead screws pass through the corresponding longitudinal U-shaped frame and transverse U-shaped frame, and the outer ends of both the first and second lead screws are fixedly connected to a scale dial.

[0014] Furthermore, both the outer ends of the first and second lead screws are equipped with speedometers.

[0015] The beneficial effects of this invention are: 1. This invention effectively addresses the core problem of insufficient cooling in traditional cooling devices by setting up a two-dimensional adjustment structure and a self-driven cleaning mechanism built into the cooling roller. This ensures precise and tight contact between the cooling roller, casting roller, and diaphragm, guaranteeing uniform cooling of the film surface and improving issues such as poor diaphragm adhesion, film surface bubbles, pits, and color differences. At the same time, it continuously cleans scale from the inner wall of the cooling roller, ensuring the efficiency of cooling water heat exchange. This addresses the root cause of insufficient cooling due to scaling, improves the diaphragm production qualification rate, breaks through production speed limitations, and meets the needs of high-efficiency production.

[0016] 2. This invention uses a limiting mechanism and spring force to automatically lock the lead screw. The anti-slip pad enhances the locking stability, allowing for quick locking and unlocking of the lead screw. This effectively improves the positional displacement of the cooling roller caused by equipment vibration, ensures the matching accuracy between the cooling roller and the casting roller, and does not affect the position adjustment efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a diaphragm cooling device according to the present invention; Figure 2 This is a schematic diagram of the longitudinal U-shaped frame installation structure of a diaphragm cooling device according to the present invention; Figure 3 This is a schematic diagram of the horizontal U-shaped frame installation and separation structure of a diaphragm cooling device according to the present invention; Figure 4 This is a top view sectional view of the longitudinal U-shaped frame structure of a diaphragm cooling device according to the present invention; Figure 5 This is a schematic diagram of the limiting mechanism structure of a diaphragm cooling device according to the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the cooling roller in a diaphragm cooling device according to the present invention; Figure 7 This is a schematic diagram of the cleaning mechanism of a diaphragm cooling device according to the present invention; Figure 8 This is a schematic diagram of the annular scraper installation structure of a diaphragm cooling device according to the present invention.

[0018] In the diagram: 1. Base; 2. Support plate; 3. Casting roller; 4. Mounting frame; 5. Longitudinal U-shaped frame; 6. First lead screw; 7. Lifting seat; 8. Transverse U-shaped frame; 9. Second lead screw; 10. Sliding seat; 11. Bearing support plate; 12. Mounting groove; 13. Limiting mechanism; 131. Rotating rod; 132. Anti-slip clamp; 133. Spring; 134. Rewinding reel; 135. Traction rope; 136. Knob; 14. Cooling roller; 15. Rotary joint; 16. Cleaning mechanism; 161. Bracket; 162. Reciprocating lead screw; 163. Ring frame; 164. Annular scraper; 165. Fan blade; 166. Trapezoidal guide rail; 167. Guide groove; 17. Trapezoidal limit strip; 18. Trapezoidal slot; 19. Scale dial; 20. Speedometer; 21. Anti-slip pad. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Please refer to Figures 1 to 8This invention provides a technical solution: a diaphragm cooling device, comprising two bases 1, with support plates 2 fixedly connected to the upper sides of each base 1, a casting roller 3 rotatably coupled between the two support plates 2, mounting brackets 4 fixedly connected to the upper ends of each support plate 2, a longitudinal U-shaped frame 5 fixedly connected to one side of the mounting bracket 4, a first lead screw 6 rotatably coupled to the inner wall of the longitudinal U-shaped frame 5, a lifting seat 7 threaded onto the first lead screw 6, a transverse U-shaped frame 8 fixedly connected to one end of the lifting seat 7, a second lead screw 9 rotatably coupled to the inner wall of the transverse U-shaped frame 8, a sliding seat 10 threaded onto the second lead screw 9, a bearing support plate 11 fixedly connected to one side of the sliding seat 10, mounting grooves 12 opened at one end of both the longitudinal U-shaped frame 5 and the transverse U-shaped frame 8, a limit mechanism 13 provided inside each of the two mounting grooves 12, a cooling roller 14 rotatably coupled between the two bearing support plates 11, a rotary joint 15 installed at both ends of the cooling roller 14, and a cleaning mechanism 16 provided inside the cooling roller 14. Cooling roller 14 is positioned on one side of casting roller 3 and cooperates with casting roller 3. The device is supported by two bases 1. Casting roller 3 on support plate 2 serves as the main roller for diaphragm forming and completes the basic transmission. The longitudinal U-shaped frame 5 on mounting frame 4 cooperates with the first lead screw 6. When rotated, it drives the lifting seat 7 to adjust the longitudinal height of cooling roller 14. The transverse U-shaped frame 8 cooperates with the second lead screw 9 to drive the sliding seat 10 to adjust the transverse position of cooling roller 14. Finally, the cooling roller 14 is precisely attached to the diaphragm on one side of casting roller 3. This structure realizes two-dimensional position adjustment of cooling roller 14, which can adapt to the production needs of diaphragms of different specifications. It ensures that cooling roller 14, casting roller 3 and diaphragm are closely fitted, ensuring uniform cooling of the film surface. Structurally, it solves the problem of insufficient cooling caused by poor bonding in traditional devices.

[0021] In this embodiment, the limiting mechanism 13 includes two rotating rods 131 rotatably engaged with the lower side of the inner wall of the mounting groove 12. Anti-slip clamps 132 are fixedly connected to one side of each of the two rotating rods 131. A spring 133 is installed between the two rotating rods 131. A winding reel 134 is rotatably engaged with the lower side of the inner wall of the mounting groove 12. Traction ropes 135 are fixedly connected to both ends of the winding reel 134. A knob 136 is fixedly connected to the upper end of the winding reel 134, extending through to the outer side of the corresponding longitudinal U-shaped frame 5 or transverse U-shaped frame 8. The clamping ends of the two anti-slip clamps 132 respectively abut against the outer ends of the corresponding first lead screw 6 or second lead screw 9. The two ends of the spring 133 are fixedly connected to the corresponding rotating rods 131. The opposite ends of the two traction ropes 135 are fixedly connected to the corresponding rotating rods 131. Anti-slip pads 21 are fixedly connected to the clamping ends of the two anti-slip clamps 132. The working process of the limiting mechanism 13 is as follows: In its natural state, the elastic force of the spring 133 pushes the two rotating rods 131, causing the anti-slip clamp 132 to abut against the outer ends of the first lead screw 6 and the second lead screw 9, thereby locking and limiting the lead screw. When the lead screw needs to be adjusted, the knob 136 is rotated to drive the winding reel 134 to wind up the traction rope 135. The traction rope 135 pulls the rotating rod 131 to compress the spring 133, causing the anti-slip clamp 132 to disengage from the lead screw and release the limiting. The anti-slip pad 21 can increase the contact friction between the clamp and the lead screw, making the locking more stable. This mechanism can quickly lock and unlock the lead screw, preventing the cooling roller 14 from shifting position due to vibration during operation, ensuring the matching accuracy between the cooling roller 14 and the casting roller 3. At the same time, the unlocking operation is convenient and does not affect the position adjustment efficiency of the cooling roller 14.

[0022] In this embodiment, the cleaning mechanism 16 includes two supports 161 fixedly connected to the inner wall of the cooling roller 14. A reciprocating screw 162 is rotatably engaged between the two supports 161. A ring frame 163 is threaded onto the reciprocating screw 162. An annular scraper 164 is fixedly connected to the outer side of the ring frame 163. A fan blade 165 is fixedly connected to one end of the reciprocating screw 162. Trapezoidal guide rails 166 are fixedly connected to both sides of the inner wall of the cooling roller 14. Guide grooves 167 adapted to the trapezoidal guide rails 166 are opened on both sides of the annular scraper 164. The rotary joint 15 at the liquid inlet end is coaxially arranged with the fan blade 165. The annular scraper 164 is slidably engaged with the inner wall of the cooling roller 14, and the annular scraper 164 is in clearance fit with the inner wall of the cooling roller 14. When the cleaning mechanism 16 is working, cooling water enters the interior of the cooling roller 14 from the rotary joint 15 at the liquid inlet end. The water flow impacts the fan blade 165, driving the reciprocating screw 162 to rotate. The reciprocating screw 162 drives the ring frame 163 to move axially back and forth along the trapezoidal guide rail 166. The annular scraper 164 on the ring frame 163 slides synchronously on the inner wall of the cooling roller 14 to scrape and clean the scale on the inner wall. The cleaned scale flows out with the cooling water. The fan blade 165 and the rotary joint 15 at the liquid inlet end are coaxially set to ensure that the driving force of the water flow impact is maximized. The annular scraper 164 is fitted with the inner wall with a gap, which not only achieves scale removal without dead corners, but also avoids scratching the inner wall of the roller. This mechanism uses the kinetic energy of water to self-drive scale removal without external power, continuously cleaning the scale on the inner wall of the cooling roller 14, ensuring the heat exchange efficiency between the cooling water and the roller body, and solving the problem of cooling effect reduction caused by scale from the root.

[0023] In this embodiment, trapezoidal limiting strips 17 are fixedly connected to the inner walls of both the longitudinal U-shaped frame 5 and the transverse U-shaped frame 8. A trapezoidal slot 18, which slides in conjunction with the trapezoidal limiting strip 17, is provided on one side of both the lifting seat 7 and the sliding seat 10. The outer ends of the first lead screw 6 and the second lead screw 9 both penetrate the corresponding longitudinal U-shaped frame 5 and transverse U-shaped frame 8, and a scale turntable 19 is fixedly connected to the outer ends of both the first lead screw 6 and the second lead screw 9. A speedometer 20 is installed on the outer ends of both the first lead screw 6 and the second lead screw 9. The trapezoidal limiting strips 17 inside the longitudinal U-shaped frame 5 and the transverse U-shaped frame 8 slide in conjunction with the trapezoidal slots 18 on the lifting seat 7 and the sliding seat 10, providing guidance and limiting for the movement of the lifting seat 7 and the sliding seat 10, and preventing them from deflecting during movement. Rotating the scale dial 19 at the outer end of the first lead screw 6 and the second lead screw 9 can precisely adjust the position of the cooling roller 14. The speedometer 20 can accurately measure the rotation of the lead screw, realizing the quantitative adjustment of the position of the cooling roller 14. The trapezoidal limiting structure improves the stability of the cooling roller 14 during the adjustment process. The cooperation between the scale dial 19 and the speedometer 20 makes the two-dimensional position adjustment of the cooling roller 14 more precise and reproducible. It can quickly adjust to the optimal cooling position according to the diaphragm of different thicknesses and widths, further improving the uniformity of membrane cooling and the adaptability of the device.

[0024] When using the device, this diaphragm cooling device is based on the base 1 and the support plate 2. The casting roller 3 completes the transfer and basic forming of the lithium battery diaphragm. By rotating the scale turntable 19, the first lead screw 6 and the second lead screw 9 are driven to rotate. Under the guidance and limitation of the trapezoidal limit bar 17 and the trapezoidal slot 18, the longitudinal movement of the lifting seat 7 and the lateral movement of the sliding seat 10 are realized respectively, thereby driving the cooling roller 14 to perform two-dimensional position adjustment. The speedometer 20 realizes the precise measurement of the adjustment amount, so that the cooling roller 14 accurately fits the diaphragm on one side of the casting roller 3, which is suitable for the production of diaphragms of different specifications. After adjustment, the spring 133 of the limiting mechanism 13 pushes the anti-slip clamp 132 to lock the screw, preventing the cooling roller 14 from shifting position. Cooling water enters the cooling roller 14 from the rotary joint 15 at the liquid inlet end. The water flow impacts the fan blade 165, driving the reciprocating screw 162 to rotate, causing the annular scraper 164 to slide back and forth along the trapezoidal guide rail 166, continuously cleaning the scale on the inner wall of the roller, ensuring heat exchange efficiency. After the cooling water completes heat exchange with the diaphragm, it flows out, achieving efficient and uniform cooling of the diaphragm, solving the problems of insufficient cooling and scale affecting the cooling effect in traditional devices.

[0025] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A diaphragm cooling device, comprising two bases (1), characterized in that: Support plates (2) are fixedly connected to the upper sides of both bases (1). Casting rollers (3) are rotatably connected between the two support plates (2). Mounting brackets (4) are fixedly connected to the upper ends of both support plates (2). A longitudinal U-shaped frame (5) is fixedly connected to one side of the mounting bracket (4). A first lead screw (6) is rotatably connected to the inner wall of the longitudinal U-shaped frame (5). A lifting seat (7) is threaded onto the first lead screw (6). A transverse U-shaped frame (8) is fixedly connected to one end of the lifting seat (7). A second lead screw (8) is rotatably connected to the inner wall of the transverse U-shaped frame (8). The second lead screw (9) is threaded with a sliding seat (10). A bearing support plate (11) is fixedly connected to one side of the sliding seat (10). An installation groove (12) is opened at one end of the longitudinal U-shaped frame (5) and the transverse U-shaped frame (8). A limit mechanism (13) is provided inside the two installation grooves (12). A cooling roller (14) is rotatably engaged between the two bearing support plates (11). A rotary joint (15) is installed at both ends of the cooling roller (14). A cleaning mechanism (16) is provided inside the cooling roller (14).

2. The diaphragm cooling device according to claim 1, characterized in that: The cooling roller (14) is disposed on one side of the casting roller (3), and the cooling roller (14) cooperates with the casting roller (3).

3. The diaphragm cooling device according to claim 1, characterized in that: The limiting mechanism (13) includes two rotating rods (131) rotatably engaged with the lower side of the inner wall of the mounting groove (12). Anti-slip plates (132) are fixedly connected to one side of each of the two rotating rods (131). A spring (133) is installed between the two rotating rods (131). A winding reel (134) is rotatably engaged with the lower side of the inner wall of the mounting groove (12). A traction rope (135) is fixedly connected to both ends of the winding reel (134). A knob (136) is fixedly connected to the upper end of the winding reel (134) through to the outside of the corresponding longitudinal U-shaped frame (5) or transverse U-shaped frame (8).

4. The diaphragm cooling device according to claim 3, characterized in that: The clamping ends of the two anti-slip clamps (132) are respectively engaged with the outer ends of the corresponding first lead screw (6) or second lead screw (9), the two ends of the spring (133) are respectively fixedly connected to the corresponding rotating rod (131), and the opposite ends of the two traction ropes (135) are respectively fixedly connected to the corresponding rotating rod (131).

5. A diaphragm cooling device according to claim 3, characterized in that: The clamping ends of the two anti-slip clamps (132) are fixedly connected with anti-slip pads (21).

6. The diaphragm cooling device according to claim 1, characterized in that: The cleaning mechanism (16) includes two supports (161) fixedly connected to the inner wall of the cooling roller (14). A reciprocating screw (162) is rotatably connected between the two supports (161). A ring frame (163) is threaded onto the reciprocating screw (162). An annular scraper (164) is fixedly connected to the outer side of the ring frame (163). A fan blade (165) is fixedly connected to one end of the reciprocating screw (162). Trapezoidal guide rails (166) are fixedly connected to both sides of the inner wall of the cooling roller (14). Guide grooves (167) adapted to the trapezoidal guide rails (166) are opened on both sides of the annular scraper (164).

7. A diaphragm cooling device according to claim 6, characterized in that: The rotary joint (15) at the liquid inlet end is coaxially arranged with the fan blade (165), and the annular scraper (164) is slidably fitted on the inner wall of the cooling roller (14), and the annular scraper (164) is clearance fitted with the inner wall of the cooling roller (14).

8. A diaphragm cooling device according to claim 1, characterized in that: The inner walls of the longitudinal U-shaped frame (5) and the transverse U-shaped frame (8) are fixedly connected with trapezoidal limiting strips (17), and one side of the lifting seat (7) and the sliding seat (10) is provided with trapezoidal slots (18) that slide with the trapezoidal limiting strips (17).

9. A diaphragm cooling device according to claim 1, characterized in that: The outer ends of the first lead screw (6) and the second lead screw (9) both pass through the corresponding longitudinal U-shaped frame (5) and transverse U-shaped frame (8), and the outer ends of the first lead screw (6) and the second lead screw (9) are fixedly connected to a scale turntable (19).

10. A diaphragm cooling device according to claim 9, characterized in that: Both the first lead screw (6) and the second lead screw (9) are equipped with a speedometer (20).

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