Peeling roller device for lithium battery separator production

Abstract

This application discloses a stripping roller device for lithium battery separator production, including: a casting roller, with a rotatable stripping roller disposed on one side of the casting roller; and a spacing control mechanism, with a side support plate fixedly disposed at the bottom of the spacing control mechanism, the side support plate being rotatably connected to the casting roller, and the spacing control mechanism being rotatably connected to the stripping roller, for adjusting the position of the stripping roller. In order to solve the technical problem in the prior art that ordinary stripping rollers only play a guiding role and cannot actively adjust the cooling process of the membrane, this application designs a dual-function stripping roller device that integrates spacing adjustment and built-in cooling. By changing the wrap angle through the spacing control mechanism to adjust the passive cooling intensity, and simultaneously providing active direct cooling through the cooling mechanism, a dual control of the membrane cooling path and intensity is achieved, thereby optimizing the crystallization process of the separator and improving the product quality stability.

Description

Technical Field

[0001] This application relates to the field of lithium battery separator production equipment technology, and in particular to a stripping roller device for lithium battery separator production. Background Technology

[0002] The separator of a lithium-ion battery is a key internal component of the battery. Its microstructure directly determines the battery's safety, cycle life and power performance. Currently, the mainstream separator is made from polyolefin raw materials through melt casting. One of the process steps is to rapidly cool and solidify the melt on the surface of a low-temperature casting roller.

[0003] In existing production lines, the melt is cast onto the surface of the casting roller, forming a film that adheres to the roller surface at a certain angle, also known as the "wrapping angle". The film adheres to the roller surface for heat exchange, and then is peeled off from the surface of the casting roller by the peeling roller and guided to the subsequent process. In current technology, the cooling effect of the film mainly depends on the temperature of the casting roller and its contact area and time with the film.

[0004] However, this traditional method has a single and non-adjustable cooling capacity. Once the temperature of the casting roller and the speed of the production line are set, the cooling intensity is basically fixed and cannot be fine-tuned according to the characteristics of the raw materials, thickness specifications or real-time operating conditions during the production process, making it difficult to obtain the optimal crystallization conditions.

[0005] In other words, existing technologies have the following technical problems: ordinary lithium battery separator stripping devices have limited cooling capabilities and are difficult to adjust precisely. Therefore, a stripping roller device for lithium battery separator production is proposed to address these issues. Utility Model Content

[0006] This application provides a stripping roller device for lithium battery separator production to solve the problem that ordinary lithium battery separator stripping devices in the prior art have a single cooling capacity and are difficult to finely adjust.

[0007] According to one aspect of this application, a stripping roller device for lithium battery separator production is provided, comprising:

[0008] Casting roll, with a rotatable peeling roll on one side;

[0009] It also includes a spacing control mechanism, with a side support plate fixedly installed at the bottom of the spacing control mechanism, and the side support plate is rotatably connected to the casting roller;

[0010] The spacing control mechanism is rotatably connected to the peeling roller and is used to adjust the position of the peeling roller;

[0011] The stripping roller is also equipped with a cooling mechanism to actively cool the roller body.

[0012] Furthermore, the spacing control mechanism includes a fixed bracket, a linear guide rail, and a roller seat;

[0013] The fixed bracket is fixedly installed at the top of the side support plate, and a linear slide rail is fixedly installed on the upper surface of the fixed bracket;

[0014] A linear slider is provided at the bottom of the roller holder.

[0015] Furthermore, the stripping roller is disposed between the two roller seats and is rotatably connected to the roller seats.

[0016] Furthermore, a control unit is fixedly installed on one side of the roller seat to provide driving power.

[0017] Furthermore, the control unit includes a cylinder bracket and a control cylinder. The cylinder bracket is fixedly mounted on one side of the upper surface of the fixed bracket. One end of the control cylinder is rotatably connected to one side of the cylinder bracket, and the other end of the control cylinder is rotatably connected to the side wall of the roller seat.

[0018] Furthermore, an angle amplification component is also provided at the bottom of the spacing control mechanism;

[0019] The angle amplification component includes a linkage rack, a linkage gear, a support, and a guide roller;

[0020] The linkage rack is fixedly installed on the bottom surface of the linear slider, forming a rack component that moves linearly in sync with the slider;

[0021] A synchronous shaft is rotatably connected to the bottom of the fixed bracket, and a linkage gear is fixedly connected to the arc-shaped wall of the synchronous shaft. The linkage gear and the linkage rack are connected by transmission.

[0022] Furthermore, one end of the support is fixedly connected to the arc-shaped wall of the synchronous shaft, and the other end of the support is fixedly connected to a support frame, on which a guide roller is rotatably connected.

[0023] Furthermore, the support includes a first support rod, a second support rod, and a tension spring;

[0024] The first support rod is fixedly installed on the arc-shaped wall of the synchronous shaft, and the second support rod is slidably connected in the inner cavity of the first support rod. One end of the second support rod is fixedly connected to the support frame.

[0025] A tension spring is fixedly connected between the first support rod and the second support rod, and the tension spring is in a pre-compressed state.

[0026] Furthermore, the cooling mechanism includes a central cylinder and a rotary joint;

[0027] The peeling roller has an internal cavity, and a central cylinder is fixedly connected to the center of the internal cavity of the peeling roller.

[0028] The central cylinder has a central cavity inside.

[0029] Furthermore, an annular cavity is formed between the central cylinder and the inner cavity of the stripping roller.

[0030] Furthermore, one end of the stripping roller is equipped with an input pipe and an output pipe via a rotary joint, with one end of the input pipe connected to the central cavity;

[0031] One end of the output tube is connected to the annular cavity.

[0032] Furthermore, a spiral blade is fixedly installed in the annular cavity to form a spiral flow channel.

[0033] In order to solve the technical problem in the prior art that ordinary stripping rollers only play a guiding role and cannot actively adjust the cooling process of the membrane, this application designs a dual-function stripping roller device that integrates spacing adjustment and built-in cooling. By changing the wrap angle through the spacing control mechanism to adjust the passive cooling intensity, and simultaneously providing active direct cooling through the cooling mechanism, the device achieves dual control over the cooling path and intensity of the membrane, thereby optimizing the crystallization process of the separator and improving the stability of product quality. It is particularly suitable for lithium battery separator production lines with refined and adjustable cooling processes. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application;

[0036] Figure 2 This is a side view of one embodiment of the present application;

[0037] Figure 3 This is one embodiment of the present application. Figure 1 A magnified structural diagram of point A;

[0038] Figure 4 This is one embodiment of the present application. Figure 3 A magnified structural diagram of point B;

[0039] Figure 5 This is a schematic diagram of the cooling mechanism according to one embodiment of this application;

[0040] Figure 6 This is one embodiment of the present application. Figure 5 A magnified structural diagram of point C;

[0041] Figure 7 This is a schematic diagram of the structure of an angle amplification component according to one embodiment of this application;

[0042] Figure 8 This is a schematic diagram of the internal structure of the support portion according to an embodiment of this application.

[0043] In the picture:

[0044] 1. Casting roller;

[0045] 2. Side support plate;

[0046] 3. Peeling roller;

[0047] 4. Spacing control mechanism; 401. Fixed bracket; 402. Linear slide rail; 403. Roller seat; 4031. Linear slider; 404. Cylinder bracket; 405. Control cylinder; 406. Drive motor; 407. Limiting part; 4071. Screw bracket; 4072. Limiting screw; 4073. Contact head; 4074. Locking nut;

[0048] 5. Cooling mechanism; 501. Central cylinder; 502. Central cavity; 503. Annular cavity; 504. Rotary joint; 505. Input pipe; 506. Output pipe; 507. Spiral blades;

[0049] 6. Diaphragm;

[0050] 7. Corner protection;

[0051] 8. Angle amplification component; 801. Linkage rack; 802. Reversing gear; 803. Synchronous shaft; 804. Linkage gear; 805. Support part; 8051. First support rod; 8052. Second support rod; 8053. Tension spring; 806. Support frame; 807. Guide roller. Detailed Implementation

[0052] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0053] Please see Figure 1 and Figure 2 As shown, a stripping roller device for lithium battery separator production includes:

[0054] Casting roller 1, with a rotatable peeling roller 3 on one side;

[0055] It also includes a spacing control mechanism 4, with a side support plate 2 fixedly installed at the bottom of the spacing control mechanism 4. The side support plate 2 is rotatably connected to the casting roller 1 to form a support structure.

[0056] The spacing control mechanism 4 is rotatably connected to the peeling roller 3 to form a linear displacement driving relationship, which is used to adjust the position of the peeling roller 3 and indirectly change the wrap angle 7 of the diaphragm 6 on the casting roller 1, so as to achieve the adjustment of the passive cooling effect based on the casting roller.

[0057] The stripping roller 3 is also equipped with a cooling mechanism 5, which is used to actively cool the roller body of the stripping roller 3, thereby providing an additional direct cooling effect when it contacts and guides the film 6.

[0058] This application adjusts the passive cooling intensity by changing the wrap angle 7 through the spacing control mechanism 4, and simultaneously provides active direct cooling through the cooling mechanism 5, thereby achieving dual control over the cooling path and intensity of the membrane, thus optimizing the crystallization process of the separator and improving the stability of product quality. It is particularly suitable for lithium battery separator production lines that have refined and adjustable requirements for cooling processes.

[0059] In a preferred embodiment of this application, see [reference]. Figure 1 and Figure 3 As shown; the spacing control mechanism 4 includes a fixed bracket 401, a linear slide rail 402, and a roller seat 403.

[0060] The fixed bracket 401 is fixedly installed at the top of the side support plate 2, and a linear slide rail 402 is fixedly installed on the upper surface of the fixed bracket 401.

[0061] The bottom of the roller seat 403 is provided with a linear slider 4031, which is used to slide with the linear slide rail 402 to form a linear moving pair.

[0062] The peeling roller 3 is disposed between two roller seats 403 and is rotatably connected to the roller seats 403 via bearings, forming a rotating support structure for the peeling roller 3. With this technical solution, when the control unit is activated, the roller seat 403 can drive the peeling roller 3 to move smoothly along the linear slide rail 402, thereby changing the relative distance between the peeling roller 3 and the casting roller 1.

[0063] Further, see Figure 3 As shown, a control unit is fixedly provided on one side of the roller seat 403. The control unit is used to provide driving power to control the roller seat 403 and the stripping roller 3 to move linearly along the linear slide rail 402.

[0064] Specifically, the control unit includes a cylinder bracket 404 and a control cylinder 405. The cylinder bracket 404 is fixedly mounted on one side of the upper surface of the fixed bracket 401. One side of the cylinder bracket 404 is rotatably connected to one end of the control cylinder 405 via a pin. The other end of the control cylinder 405 is rotatably connected to the side wall of the roller seat 403 via another pin, forming a telescopic drive linkage mechanism.

[0065] With this technical solution, when the control cylinder 405 extends or retracts, it can push or pull the roller seat 403, thereby moving the stripping roller 3 away from or closer to the casting roller 1, thereby adjusting the size of the wrap angle 7 of the diaphragm 6 on the surface of the casting roller 1 to adapt to different cooling process requirements. It is especially suitable for production scenarios that require rapid adjustment of cooling intensity.

[0066] Preferably, a drive motor 406 is also fixedly installed on the side wall of one of the roller seats 403, and the end of the output shaft of the drive motor 406 is connected to one end of the stripping roller 3 via a coupling.

[0067] As a preferred technical solution, in order to simultaneously and amplify the adjustment effect on the wrap angle 7 when adjusting the position of the peeling roller 3, an angle amplification component 8 is also provided at the bottom of the spacing control mechanism 4.

[0068] See Figure 7 As shown, the angle amplification component 8 includes a linkage rack 801, a linkage gear 804, a support 805, and a guide roller 807.

[0069] The linkage rack 801 is fixedly installed on the bottom surface of the linear slider 4031, forming a rack component that moves linearly synchronously with the slider 4031.

[0070] A synchronous shaft 803 is rotatably connected to the bottom of the fixed bracket 401. A linkage gear 804 is fixedly connected to the arc-shaped wall of the synchronous shaft 803. The linkage gear 804 is connected to the linkage rack 801 for transmission.

[0071] Specifically, a reversing gear 802 is rotatably connected to the bottom surface of the fixed bracket 401. The reversing gear 802 meshes with the bottom surface of the linkage rack 801, and the reversing gear 802 meshes with the linkage gear 804. This is used to change the direction of power transmission and form a speed reduction or speed increase gear, which can be used to match the motion stroke and the required swing angle.

[0072] Furthermore, one end of a support portion 805 is fixedly connected to the arc-shaped wall of the synchronous shaft 803, and the other end of the support portion 805 is fixedly connected to a support frame 806, on which a guide roller 807 is rotatably connected.

[0073] The number of guide rollers 807 is preferably two, forming a roller group for diaphragm turning and tensioning. The guide rollers 807 are used to turn and support the diaphragm 6 after it has been peeled off from the casting roller 1.

[0074] With this technical solution, when it is necessary to adjust the wrap angle 7 of the diaphragm on the casting roller, the control cylinder 405 can be driven to move, thereby causing the roller seat 403 and the linkage rack 801 to move linearly. The movement of the linkage rack 801 is transmitted through the meshing of the reversing gear 802 and the linkage gear 804, which synchronously drives the synchronous shaft 803 and the support part 805 fixed thereon to deflect at a certain angle. This causes the guide roller 807 mounted on the support frame 806 to deflect at a corresponding angle, thereby causing the path of the diaphragm 6 to change near the peeling point. This results in a significant and mechanically amplified change in the arc length of the diaphragm 6 adhering to the casting roller 1, i.e., the wrap angle 7. This achieves the purpose of controlling a relatively large range of wrap angle adjustment with a small stroke linear movement.

[0075] Furthermore, in order to automatically compensate for changes in the diaphragm path length during the adjustment of the wrap angle 7, maintain appropriate tension of the diaphragm 6, and prevent it from becoming too loose or too tight, see [reference needed]. Figure 8 As shown, the support part 805 includes a first support rod 8051, a second support rod 8052, and a tension spring 8053.

[0076] The first support rod 8051 is fixedly installed at the arc-shaped wall of the synchronous shaft 803. The second support rod 8052 is slidably connected in the inner cavity of the first support rod 8051. One end of the second support rod 8052 is fixedly connected to the support frame 806.

[0077] A tension spring 8053 is fixedly connected between the first support rod 8051 and the second support rod 8052, and the tension spring 8053 is in a pre-compressed state.

[0078] With this technical solution, when the guide roller 807 deflects and causes the required path length of the diaphragm 6 to change, the support frame 806 can automatically absorb or compensate for the length change by the extension and retraction of the second support rod 8052 relative to the first support rod 8051 under the action of elastic thrust. This achieves automatic elastic tensioning of the diaphragm 6 throughout the entire wrap angle adjustment process, and improves the stability of diaphragm transmission.

[0079] Furthermore, to ensure the safety and reliability of the adjustment process, a limiting part 407 is provided on one side of the fixed bracket 401 to set and limit the closest position of the peeling roller 3 to the casting roller 1, so as to avoid mechanical collision between the two and protect the safety of the equipment.

[0080] As a preferred technical solution, please refer to Figure 4 As shown, the limiting part 407 includes a screw bracket 4071 and a limiting screw 4072.

[0081] The screw bracket 4071 is fixedly mounted on the upper surface of the fixed bracket 401. The screw bracket 4071 is threaded with a limit screw 4072, which is used to adjust the position of its end by screwing the screw bracket 4071 in or out.

[0082] One end of the limit screw 4072 is fixedly connected to a contact head 4073, and a locking nut 4074 is also threaded onto the limit screw 4072, which is used to lock the limit screw 4072 after adjustment to the correct position, so as to prevent it from loosening or shifting during use.

[0083] With this technical solution, when the limit screw 4072 is rotated, the position of the contact head 4073 can be set, thereby providing a mechanical hard limit for the sliding of the roller seat 403, and thus ensuring that a safe minimum gap is always maintained between the peeling roller 3 and the casting roller 1 during automatic or manual adjustment.

[0084] In a preferred embodiment of this application, see [reference] Figure 5 As shown, the cooling mechanism 5 includes a central cylinder 501 and a rotary joint 504.

[0085] The peeling roller 3 has an inner cavity, and a central cylinder 501 is fixedly connected to the center of the inner cavity of the peeling roller 3.

[0086] The interior of the central cylinder 501 is provided with a central cavity 502, which serves as an inflow channel for the cooling medium.

[0087] An annular cavity 503 is formed between the central cylinder 501 and the inner cavity of the stripping roller 3, serving as the main heat exchange channel and outflow channel for the cooling medium. With this technical solution, when the cooling medium is pumped in, it can flow through these cavities, thereby carrying away the heat absorbed by the stripping roller from the diaphragm.

[0088] Furthermore, in order to introduce and export cooling medium into and out of the inner cavity of the roller, one end of the stripping roller 3 is equipped with an input pipe 505 and an output pipe 506 through a rotary joint 504. One end of the input pipe 505 is connected to the central cavity 502 to form an input path for the cooling medium, which is used to pump the external cooling medium into the central cavity 502.

[0089] One end of the output pipe 506 is connected to the annular cavity 503 to form an output path for the cooling medium, which is used to discharge the medium after heat exchange from the annular cavity 503.

[0090] With this technical solution, when the cooling medium is pumped into the central cavity 502 from the input pipe 505, it can enter and fill the annular cavity 503, thereby exchanging heat with the inner wall of the roller. The heated medium is then discharged from the output pipe 506, achieving a continuous active cooling effect.

[0091] Furthermore, in order to optimize the flow state of the cooling medium in the annular cavity 503 and enhance the heat exchange efficiency, a spiral blade 507 is fixedly installed in the annular cavity 503 to form a spiral flow channel around the central cylinder, thereby guiding the cooling medium to flow along the spiral path, significantly extending the residence time and flow path of the medium in the roller, making the heat exchange more thorough and uniform.

[0092] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0093] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A peeling roller device for lithium battery separator production, characterized by: include: Casting roller (1), and a rotatable peeling roller (3) is provided on one side of the casting roller (1). It also includes a spacing control mechanism (4), the bottom of which is fixedly provided with a side support plate (2), and the side support plate (2) is rotatably connected to the casting roller (1); The spacing control mechanism (4) is rotatably connected to the peeling roller (3) for adjusting the position of the peeling roller (3); The stripping roller (3) is also provided with a cooling mechanism (5) for actively cooling the roller body of the stripping roller (3); The spacing control mechanism (4) includes a fixed bracket (401), a linear slide rail (402), and a roller seat (403). The fixed bracket (401) is fixedly installed at the top of the side support plate (2), and a linear slide rail (402) is fixedly installed on the upper surface of the fixed bracket (401). A linear slider (4031) is provided at the bottom of the roller seat (403). An angle amplification component (8) is also provided at the bottom of the spacing control mechanism (4). The angle amplification component (8) includes a linkage rack (801), a linkage gear (804), a support (805), and a guide roller (807). The linkage rack (801) is fixedly installed on the bottom surface of the linear slider (4031); The bottom of the fixed bracket (401) is rotatably connected to a synchronous shaft (803), and a linkage gear (804) is fixedly connected to the arc-shaped wall of the synchronous shaft (803). The linkage gear (804) is connected to the linkage rack (801) in a transmission connection. One end of a support part (805) is fixedly connected to the arc-shaped wall of the synchronous shaft (803), and the other end of the support part (805) is fixedly connected to a support frame (806). A guide roller (807) is rotatably connected to the support frame (806). The support part (805) includes a first support rod (8051), a second support rod (8052), and a tension spring (8053). The first support rod (8051) is fixedly installed on the arc-shaped wall of the synchronous shaft (803), and a second support rod (8052) is slidably connected in the inner cavity of the first support rod (8051). One end of the second support rod (8052) is fixedly connected to the support frame (806). A tension spring (8053) is fixedly connected between the first support rod (8051) and the second support rod (8052), and the tension spring (8053) is in a pre-compressed state.

2. The peeling roller apparatus for lithium battery separator production according to claim 1, characterized in that: The stripping roller (3) is disposed between two roller seats (403) and is rotatably connected to the roller seats (403).

3. The peeling roller apparatus for lithium battery separator production according to claim 2, characterized in that: A control unit is fixedly provided on one side of the roller seat (403) to provide driving power.

4. The peeling roller apparatus for lithium battery separator production according to claim 3, characterized in that: The control unit includes a cylinder bracket (404) and a control cylinder (405). The cylinder bracket (404) is fixedly mounted on one side of the upper surface of the fixed bracket (401). One side of the cylinder bracket (404) is rotatably connected to one end of the control cylinder (405), and the other end of the control cylinder (405) is rotatably connected to the side wall of the roller seat (403).

5. The peeling roller apparatus for lithium battery separator production according to claim 1, characterized in that: The cooling mechanism (5) includes a central cylinder (501) and a rotary joint (504). The peeling roller (3) has an inner cavity, and a central cylinder (501) is fixedly connected to the center of the inner cavity of the peeling roller (3). The central cylinder (501) has a central cavity (502) inside.

6. The peeling roller apparatus for lithium battery separator production according to claim 5, characterized in that: An annular cavity (503) is formed between the inner cavity of the central cylinder (501) and the peeling roller (3). An input pipe (505) and an output pipe (506) are installed at one end of the peeling roller (3) through a rotary joint (504). One end of the input pipe (505) is connected to the central cavity (502); and one end of the output pipe (506) is connected to the annular cavity (503).

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