A film surface cooling device for lithium battery separator production

Abstract

The present invention relates to the technical field of lithium battery separator cooling processing, and specifically relates to a film surface cooling device for lithium battery separator production. A cooling mechanism is provided in a cooling cabinet. Communication air boxes are arranged on the upper and lower sides of a cold air blowing port, and conical tube nozzles are arranged on the communication air boxes. The cold air ejected from the conical tube nozzles cools the upper and lower film surfaces of the film product, and also has a cleaning effect on dust and other impurities adhered to the film surface. When the film product is cooled by blowing air, in order to avoid the influence of impurities adhered to the film surface on the cooling work, a cooling auxiliary component is also arranged on the communication air box to assist the cooling work. That is, when the film product passes through the cold air blowing port in the cooling cabinet, while the cooling work is being carried out, the cleaning component in the cooling auxiliary component provides a cleaning effect on the upper and lower surfaces of the film, that is, the cleaning work is realized by means of soft hair cleaning scraper strips arranged at the ends of the bearing plate members.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery separator cooling processing, and specifically relates to a film surface cooling device for lithium battery separator production. Background Art

[0002] A battery separator refers to a separator material between the positive and negative electrodes of a battery. It is a very crucial part of the battery, directly affecting the safety and cost of the battery. Its main function is to isolate the positive and negative electrodes and prevent electrons in the battery from freely passing through, while allowing ions in the electrolyte to freely pass between the positive and negative electrodes. When producing a battery separator, a cooling device is required to cool the battery separator.

[0003] For the Chinese patent document with the authorization announcement number CN213955769U, it discloses a cooling device for battery separator production. As Figure 1 shown, its solution includes a fixed seat. The top outer wall of the fixed seat is fixedly connected with a support plate, and one side outer wall of the support plate is fixedly connected with a support block. The top outer wall of the support block and the bottom outer wall of the support plate are both fixedly connected with cooling fans. One side of the top outer wall of the fixed seat is connected with a support frame through a hinge, and support rollers are rotatably connected between the opposite side outer walls of the support frame. A second spring is fixedly connected between the support frame and the fixed seat. Its solution can prevent the separator from folding together, resulting in a reduction in the cooling range of the device for the battery separator and affecting the cooling efficiency of the battery separator. It can accelerate the cooling efficiency of the device for the battery separator and prevent the phenomenon that the battery separator sags due to the gravity of the battery separator, which affects the winding of the battery separator. However, when cooling the separator in its solution, when the separator passes through the cooling fan, only one side of the separator is effectively cooled, and the corresponding back side has a poor cooling effect, which cannot meet the cooling requirements during the separator production process.

[0004] Therefore, the present invention proposes a film surface cooling device for lithium battery separator production to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a film surface cooling device for lithium battery separator production to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A film surface cooling device for lithium battery separator production, including a cooling cabinet and a conveying support frame. A cold air blowing port is provided in the cooling cabinet, and a winding drum and a guide roller are provided in the conveying support frame;

[0007] A cooling mechanism is provided in the cooling cabinet, and a support base is provided at the bottom end of the cooling cabinet. An auxiliary guide roller is provided on the support base, and the auxiliary guide roller is arranged at the front port position close to the cold air blowing port.

[0008] Preferably, the cooling mechanism includes a conveying pipe body, a cold air input pipe, a connecting pipe fitting, a connecting air box, a conical pipe nozzle, and a cooling auxiliary component; the conveying pipe body is arranged on both sides of the cooling cabinet, and the conveying pipe body is connected to the cold air input pipe. A connecting pipe fitting is arranged at the middle position of the conveying pipe body. One end of the connecting pipe fitting is communicated with the connecting air box. Two groups of connecting air boxes are symmetrically arranged on the upper and lower sides of the cold air blowing port, and conical pipe nozzles are arranged on the connecting air boxes.

[0009] Preferably, a cooling auxiliary component is further arranged on the connecting air box. The cooling auxiliary component includes a bearing seat, a loading groove, a loading body, a fixing plate, a fastening threaded column, an auxiliary handle, a movable support body, a connecting spring, a connecting cover plate, a support plate member, and a cleaning component; the bearing seat is fixedly arranged on the connecting air box, and a loading groove is arranged in the bearing seat. The bottom end of the loading body is adaptively clamped with the loading groove, and fixing plates are symmetrically and fixedly arranged at both ends of the loading body. The fixing plates are fixedly connected to the bearing seat through the arranged fastening threaded columns, and an auxiliary handle is fixedly arranged at one end of the fastening threaded column.

[0010] Preferably, a movable support body is movably inserted into the loading body, and openings are arranged at both ends of the loading body. Connecting springs are equidistantly and fixedly arranged on one side of the movable support body, and the other ends of the connecting springs are fixedly arranged on the connecting cover plate. The connecting cover plate is fixedly connected to one end of the loading body through screws, and support plate members are symmetrically and fixedly arranged on the other side of the movable support body.

[0011] Preferably, the support plate member is connected to the cleaning component. The cleaning component includes a support shaft, a limiting disc, a containing cavity, a connecting round block, a positioning card slot, a connecting column member, a bearing shaft body, a bearing plate member, a soft hair cleaning scraper, and a positioning structure; the support shaft is inserted into the support plate member, and a limiting disc is fixedly arranged at one end of the support shaft. A containing cavity is arranged at the other end of the support shaft. The limiting disc is fixedly connected to the support plate member through screws. The connecting round block is adaptively placed in the containing cavity, and positioning card slots are equidistantly arranged on the outer side wall of the connecting round block. The connecting round block is fixedly arranged at one end of the connecting column member, and the other end of the connecting column member is fixedly arranged with a bearing shaft body.

[0012] Preferably, the positioning card slot is arranged as a spherical groove, and the positions of the positioning card slot and the bearing plate member are corresponding and the number of sets is the same.

[0013] Preferably, bearing plate members are equidistantly and fixedly arranged on the outer side wall of the bearing shaft body, soft hair cleaning scrapers are arranged at the ends of the bearing plate members, the connecting round block is positioned through the arranged positioning structure, and the positioning structure is connected to the support shaft.

[0014] Preferably, the positioning structure includes a cylindrical pull head, a positioning card shaft, an auxiliary spring, and a spherical head; the positioning card shaft is movably inserted into the support shaft, and one end of the positioning card shaft is fixedly provided with a cylindrical pull head, and the other end of the positioning card shaft extends into the accommodation cavity, and a spherical head is provided at the end. An auxiliary spring is fixedly provided at the end of the cylindrical pull head where it is connected to the positioning card shaft, and the other end of the auxiliary spring is fixedly provided on the outer side wall of the support shaft. The positioning card shaft corresponds to the position of the positioning card slot on the outer side wall of the connecting circular block.

[0015] Preferably, a cooling auxiliary limiting fitting is provided on the guide roller. The cooling auxiliary limiting fitting includes a limiting control groove, a control slider, a connecting body, a positioning threaded column, a knob head, a limiting support body, a bearing plate, a limiting column, a fixed shaft member, a connecting screw groove, a limiting pressure cylinder, auxiliary balls, a limiting screw plate, and a connecting fitting; the limiting control groove is provided on the outer side wall of the guide roller, and a control slider is slidably provided in the limiting control groove. The control slider is fixedly connected to the connecting body. A cylindrical threaded groove is provided in the connecting body and extends into the control slider. The positioning threaded column is threadedly connected to the cylindrical threaded groove in a matching manner. One end of the positioning threaded column is fixedly provided with a knob head. The limiting support body is fixedly provided at the side position of the connecting body, and a bearing plate is fixedly provided at one end of the limiting support body. A limiting column is fixedly provided on one side of the bearing plate. One end of the limiting column is fixedly provided with a fixed shaft member. A connecting screw groove is provided at one end of the fixed shaft member. A limiting pressure cylinder is sleeved on the fixed shaft member. Auxiliary balls are equidistantly embedded and movably provided on the inner side wall of the limiting pressure cylinder. The limiting screw plate is threadedly connected to the connecting screw groove, and the bearing plate is also connected to the connecting fitting.

[0016] Preferably, the connecting fitting includes a positioning piece, a support bar, an auxiliary bearing body, and a limiting ring body; the positioning piece is fixedly provided at one end of the support bar, the other end of the support bar is sleeved with an auxiliary bearing body, the positioning piece is fixedly connected to the bearing plate by screws, and the auxiliary bearing body is embedded in the limiting ring body.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The film surface cooling device for lithium battery separator production designed by the present invention is provided with a cooling mechanism in the cooling cabinet, and a support base is arranged at the bottom end of the cooling cabinet. An auxiliary guide roller is arranged on the support base, and the auxiliary guide roller is arranged at the front port position close to the cold air blowing port. A communicating air box is arranged on both the upper and lower sides of the cold air blowing port, and a conical tube nozzle is arranged on the communicating air box. The cooling air is input from the cold air input pipe, then enters the communicating air box through the conveying pipe body and the communicating pipe fitting, and finally sprays out from the conical tube nozzle to blow and cool the upper and lower film surfaces of the film product, and it also has a cleaning effect on impurities such as dust adhered to the film surface. When blowing and cooling the film product, in order to avoid the influence of impurities adhered to the film surface on its cooling work, a cooling auxiliary component is also arranged on the communicating air box to assist its cooling work, that is, when the film product passes through the cold air blowing port in the cooling cabinet, while the cooling work is carried out, the cleaning component in the cooling auxiliary component provides a cleaning effect on the upper and lower surfaces of the film, that is, the cleaning work is realized through the soft hair cleaning scraper arranged at the end of the bearing plate member. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic right - hand side view of the structural connection of the lithium battery separator cooling device of the present invention;

[0020] Figure 2 For Figure 1 the enlarged schematic view of the structural connection at position A in

[0021] Figure 3 It is a schematic left - hand side view of the structural connection of the lithium battery separator cooling device of the present invention;

[0022] Figure 4 It is a schematic view of the structural connection of the cooling mechanism of the present invention;

[0023] Figure 5 For Figure 4 the enlarged schematic view of the structural connection at position B in

[0024] Figure 6 It is a schematic view of the structural connection of the cooling auxiliary component of the present invention;

[0025] Figure 7 For Figure 6 the enlarged schematic view of the structural connection at position C in

[0026] Figure 8 It is a schematic view of the structural connection between the carrier and the movable support of the present invention;

[0027] Figure 9 For Figure 8 the enlarged schematic view of the structural connection at position D in

[0028] Figure 10 It is a schematic left - hand side view of the partial connection between the cleaning component and the positioning structure of the present invention;

[0029] Figure 11 For Figure 10 Enlarged schematic diagram of the structural connection at position E in

[0030] Figure 12 Right-side schematic diagram of the partial connection between the cleaning component and the positioning structure of the present invention;

[0031] Figure 13 For Figure 12 Enlarged schematic diagram of the structural connection at position F in

[0032] Figure 14 Front-side schematic diagram of the structural connection of the cooling auxiliary limit fitting of the present invention;

[0033] Figure 15 Rear-side schematic diagram of the structural connection of the cooling auxiliary limit fitting of the present invention;

[0034] Figure 16 Right-side schematic diagram of the structural connection of the cooling auxiliary limit fitting of the present invention;

[0035] Figure 17 For Figure 16 Enlarged schematic diagram of the structural connection at position G in

[0036] In the figure: cooling cabinet 1, cold air blowing port 12, support base 13, auxiliary guide roller 14, conveying support frame 2, unwinding reel 21, guide roller 22, conveying pipe body 301, cold air input pipe 302, connecting pipe fitting 303, connecting air box 304, conical pipe nozzle 305, bearing seat 401, loading groove 402, loading body 403, fixing plate 404, fastening threaded column 405, auxiliary handle 406, movable support body 407, connecting spring 408, connecting cover plate 409, support plate member 410, support shaft 501, limiting disc 502, accommodating cavity 503, connecting round block 504, positioning card slot 505, connecting column member 506, bearing shaft body 507, bearing plate member 508, soft hair cleaning scraper 509, cylindrical pull head 601, positioning card shaft 602, auxiliary spring 603, spherical surface head 604, limiting control groove 701, control slider 702, connecting body 703, positioning threaded column 704, knob head 705, limiting support body 706, bearing plate piece 707, limiting column body 708, fixed shaft member 709, connecting screw groove 710, limiting pressure cylinder 711, auxiliary ball 712, limiting screw disc 713, positioning piece 801, support bar 802, auxiliary bearing body 803, limiting ring body 804. Detailed implementation mode

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] Embodiment 1: Please refer to Figures 1 - 17 , a film surface cooling device for lithium battery separator production, including a cooling cabinet 1 and a conveying support frame 2. A cold air blowing port 12 is provided in the cooling cabinet 1, and a film unwinding roller 21 and a guiding roller 22 are provided in the conveying support frame 2. A cooling mechanism is provided in the cooling cabinet 1, and a support base 13 is provided at the bottom end of the cooling cabinet 1. An auxiliary guiding roller 14 is provided on the support base 13, and the auxiliary guiding roller 14 is arranged at a position near the front port of the cold air blowing port 12. The film product on the film unwinding roller 21 passes through the cold air blowing port 12 in the cooling cabinet 1 and then is cooled by the cooling mechanism in the cooling cabinet 1. The cooling mechanism cools the film surfaces on the upper and lower sides of the film product.

[0039] Wherein, communicating air boxes 304 are arranged on both the upper and lower sides of the cold air blowing port 12, and conical tube nozzles 305 are arranged on the communicating air boxes 304. The cooling air is input from the cold air input pipe 302, then enters the communicating air boxes 304 through the conveying pipe body 301 and the communicating pipe fittings 303, and finally sprays out from the conical tube nozzles 305 to blow and cool the upper and lower film surfaces of the film product. Moreover, it also has a cleaning effect on dust and other impurities adhering to the film surface. That is, the conveying pipe body 301 in the cooling mechanism is arranged on both sides of the cooling cabinet 1, and the conveying pipe body 301 is connected to the cold air input pipe 302. A communicating pipe fitting 303 is arranged at the middle position of the conveying pipe body 301. One end of the communicating pipe fitting 303 is communicated with the communicating air box 304. Two groups of communicating air boxes 304 are symmetrically arranged on both the upper and lower sides of the cold air blowing port 12, and conical tube nozzles 305 are arranged on the communicating air boxes 304.

[0040] When the film product is blown to cool, in order to prevent the impurities adhering to the film surface from affecting its cooling work, the present solution is further provided with a cooling auxiliary component on the connecting air box 304 to assist its cooling work, that is, when the film product passes through the cold air blowing port 12 in the cooling cabinet 1, while the cooling work is being carried out, the cleaning component in the cooling auxiliary component provides a cleaning effect on the upper and lower surfaces of the film, that is, the cleaning work is achieved by the soft-bristled cleaning scraper 509 arranged at the end of the bearing plate 508, that is, the connecting air box 304 is also provided with a cooling auxiliary component, and the cooling auxiliary component includes a bearing seat 401, a loading groove 402, a carrier 403, a fixing plate 404, and a fastening screw The support member 401 is fixedly arranged on the communication box 304, and a loading groove 402 is arranged in the support member 401, the bottom end of the loading member 403 is adapted to be snapped with the loading groove 402, and the two ends of the loading member 403 are symmetrically fixed with fixed plates 404, the fixed plates 404 are fixedly connected with the support member 401 through the fastening threaded column 405, and an auxiliary handle 406 is fixedly arranged at one end of the fastening threaded column 405; a movable support member 407 is movably inserted in the loading member 403, and the loading member 40 3 are provided with openings at both ends, one side of the movable support body 407 is equidistantly fixed with a connecting spring 408, the other end of the connecting spring 408 is fixedly set on a connecting cover plate 409, the connecting cover plate 409 is fixedly connected to one end of the carrier 403 by screws, and the other side of the movable support body 407 is symmetrically fixed with a supporting plate 410; the supporting plate 410 is connected to the cleaning component, and the cleaning component includes a supporting shaft 501, a limiting plate 502, a accommodating cavity 503, a connecting round block 504, a positioning slot 505, a connecting column 506, a bearing shaft body 507, a bearing plate 508, a soft-bristled cleaning scraper 509 and a positioning structure; the supporting shaft 50 1 is inserted and arranged in the support plate 410, and a limit plate 502 is fixedly arranged at one end of the support shaft 501, and a receiving cavity 503 is arranged at the other end of the support shaft 501. The limit plate 502 is fixedly connected to the support plate 410 by screws, and the connecting round block 504 is adapted to be placed in the receiving cavity 503, and the outer side wall of the connecting round block 504 is equidistantly arranged with positioning grooves 505, and the connecting round block 504 is fixedly arranged at one end of the connecting column 506, and a bearing shaft 507 is fixedly arranged at the other end of the connecting column 506; the positioning groove 505 is arranged as a spherical groove, and the positioning groove 505 and the bearing plate 508 are arranged at corresponding positions and the number of groups is the same.

[0041] In addition, multiple groups of bearing plate members 508 are provided on the bearing shaft body 507 in this solution, that is, multiple groups of soft hair cleaning scraping strips 509 are provided. When cleaning the film surface, only one group of soft hair cleaning scraping strips 509 can be used. After long-term operation, the soft hair cleaning scraping strips 509 for cleaning work need to be replaced with new ones. In this solution, it is not necessary to disassemble first. The position of the soft hair cleaning scraping strip 509 that needs to be replaced can be adjusted first, that is, the soft hair cleaning scraping strip 509 at its adjacent position is adjusted to the cleaning working position, that is, the bearing shaft body 507 is directly rotated. During this process, the bearing shaft body 507 is simply positioned by the clamping connection between the positioning clamping shaft 602 and the positioning clamping groove 505 on the side of the connecting round block 504. And a spherical surface head 604 is provided at the clamping end of the positioning clamping shaft 602, and the spherical surface head 604 is adapted to and fits with the positioning clamping groove 505 for clamping connection. The outer side wall of the bearing shaft body 507 is fixedly provided with bearing plate members 508 at equal intervals, and the end of the bearing plate member 508 is provided with a soft hair cleaning scraping strip 509. The connecting round block 504 is positioned through the provided positioning structure, and the positioning structure is connected to the support shaft 501; the positioning clamping shaft 602 in the positioning structure is movably inserted into the support shaft 501, and a cylindrical pulling head 601 is fixedly provided at one end of the positioning clamping shaft 602. The other end of the positioning clamping shaft 602 extends into the accommodating cavity 503, and a spherical surface head 604 is provided at the end. The cylindrical pulling head 601 is fixedly provided with an auxiliary spring 603 at the end connected to the positioning clamping shaft 602, and the other end of the auxiliary spring 603 is fixedly provided on the outer side wall of the support shaft 501. The setting position of the positioning clamping shaft 602 corresponds to the positioning clamping groove 505 on the outer side wall of the connecting round block 504; that is, without external force, it can provide a simple positioning function. When it is necessary to adjust the position of the soft hair cleaning scraping strip 509, the bearing shaft body 507 can be directly rotated by hand; when it is necessary to clean or replace all the soft hair cleaning scraping strips 509, the carrier 403 can be directly removed. The carrier 403 is fixed to the bearing seat 401 through the fastening threaded column 405, that is, the carrier 403 is detachably arranged, which is convenient for later maintenance work and the operation is convenient.

[0042] When the membrane product is conveyed from the guiding roller 22, in order to avoid the position of the membrane product shifting during the conveying process, that is, when passing through the cold air blowing port 12, to prevent the membrane body from shifting outside the cooling area and affecting its cooling work, this solution also sets a cooling auxiliary limiting fitting on the guiding roller 22. There is a cooling auxiliary limiting fitting on the guiding roller 22. The cooling auxiliary limiting fitting includes a limiting adjustment groove 701, an adjustment slider 702, a connecting body 703, a positioning threaded column 704, a knob head 705, a limiting support body 706, a bearing plate 707, a limiting column 708, a fixing shaft 709, a connecting screw groove 710, a limiting pressure cylinder 711, auxiliary balls 712, a limiting screw plate 713 and a connecting fitting; The limiting adjustment groove 701 is arranged on the outer side wall of the guiding roller 22, and the adjustment slider 702 is slidably arranged in the limiting adjustment groove 701. The adjustment slider 702 is fixedly connected to the connecting body 703. A cylindrical threaded groove is arranged in the connecting body 703 and extends into the adjustment slider 702. The positioning threaded column 704 is threadedly connected to the cylindrical threaded groove in a matching manner. One end of the positioning threaded column 704 is fixedly provided with a knob head 705. The limiting support body 706 is fixedly arranged at the side position of the connecting body 703, and one end of the limiting support body 706 is fixedly provided with a bearing plate 707. One side of the bearing plate 707 is fixedly provided with a limiting column 708. One end of the limiting column 708 is fixedly provided with a fixing shaft 709. One end of the fixing shaft 709 is provided with a connecting screw groove 710. A limiting pressure cylinder 711 is sleeved on the fixing shaft 709. The inner side wall of the limiting pressure cylinder 711 is equidistantly embedded and movably provided with auxiliary balls 712. The limiting screw plate 713 is threadedly connected to the connecting screw groove 710, and the bearing plate 707 is also connected to the connecting fitting; The connecting fitting includes a positioning piece 801, a support bar 802, an auxiliary bearing body 803 and a limiting ring body 804; The positioning piece 801 is fixedly arranged at one end of the support bar 802. The other end of the support bar 802 is sleeved with an auxiliary bearing body 803. The positioning piece 801 is fixedly connected to the bearing plate 707 by screws. The auxiliary bearing body 803 is embedded in the limiting ring body 804; That is, according to the width of the membrane product, the position of the limiting support body 706 is adjusted, that is, adjusted by sliding the adjustment slider 702 in the limiting adjustment groove 701. After reaching the appropriate position, the positioning threaded column 704 is tightened by the knob head 705 to position the limiting support body 706. The membrane product passes through the limiting support body 706 and is limited by the provided limiting pressure cylinder 711. Moreover, the side of the membrane product is limited by the provided limiting ring body 804 to avoid the position of the membrane product shifting during the conveying process, which has a corresponding auxiliary effect on its cooling work.

[0043] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film surface cooling device for lithium battery separator production, comprising a cooling cabinet (1) and a conveying support frame (2). A cold air blowing port (12) is arranged in the cooling cabinet (1), and a winding drum (21) and a guide roller (22) are arranged in the conveying support frame (2); It is characterized in that: A cooling mechanism is arranged in the cooling cabinet (1), and a support base (13) is arranged at the bottom end of the cooling cabinet (1). An auxiliary guide roller (14) is arranged on the support base (13), and the auxiliary guide roller (14) is arranged at the front port position close to the cold air blowing port (12); The cooling mechanism includes a conveying pipe body (301), a cold air input pipe (302), a connecting pipe fitting (303), a connecting air box (304), a conical pipe nozzle (305) and a cooling auxiliary component. The conveying pipe body (301) is arranged on both sides of the cooling cabinet (1), and the conveying pipe body (301) is connected with the cold air input pipe (302). A connecting pipe fitting (303) is arranged in the middle position of the conveying pipe body (301). One end of the connecting pipe fitting (303) is communicated with the connecting air box (304). Two groups of connecting air boxes (304) are symmetrically arranged on the upper and lower sides of the cold air blowing port (12), and conical pipe nozzles (305) are arranged on the connecting air boxes (304); A cooling auxiliary component is further arranged on the connecting air box (304). The cooling auxiliary component includes a bearing seat (401), a loading groove (402), a loading body (403), a fixing plate (404), a fastening threaded column (405), an auxiliary handle (406), a movable support body (407), a connecting spring (408), a connecting cover plate (409), a support plate member (410) and a cleaning component. The bearing seat (401) is fixedly arranged on the connecting air box (304), and a loading groove (402) is arranged in the bearing seat (401). The bottom end of the loading body (403) is adaptively clamped with the loading groove (402), and fixing plates (404) are symmetrically and fixedly arranged at both ends of the loading body (403). The fixing plates (404) are fixedly connected with the bearing seat (401) through the arranged fastening threaded columns (405), and an auxiliary handle (406) is fixedly arranged at one end of the fastening threaded column (405); A movable support body (407) is movably inserted into the loading body (403), and openings are arranged at both ends of the loading body (403). Connecting springs (408) are equidistantly and fixedly arranged on one side of the movable support body (407), and the other ends of the connecting springs (408) are fixedly arranged on the connecting cover plate (409). The connecting cover plate (409) is fixedly connected with one end of the loading body (403) through screws. Support plate members (410) are symmetrically and fixedly arranged on the other side of the movable support body (407); The support plate member (410) is connected to the cleaning assembly. The cleaning assembly includes a support shaft (501), a limiting disk (502), a receiving cavity (503), a connecting round block (504), a positioning card slot (505), a connecting column member (506), a bearing shaft body (507), a bearing plate member (508), a soft hair cleaning scraper (509) and a positioning structure.

2. The film surface cooling device for lithium battery separator production according to claim 1, characterized in that: The support shaft (501) is inserted into the support plate member (410). One end of the support shaft (501) is fixedly provided with a limiting disk (502), and the other end of the support shaft (501) is provided with a receiving cavity (503). The limiting disk (502) is fixedly connected to the support plate member (410) by screws. The connecting round block (504) is placed in the receiving cavity (503) in a matching manner, and positioning card slots (505) are equidistantly arranged on the outer side wall of the connecting round block (504). The connecting round block (504) is fixedly provided at one end of the connecting column member (506), and the other end of the connecting column member (506) is fixedly provided with a bearing shaft body (507).

3. The film surface cooling device for lithium battery separator production according to claim 2, characterized in that: The positioning card slot (505) is set as a spherical groove. The positioning card slot (505) and the bearing plate member (508) are arranged in corresponding positions and have the same number of sets.

4. The film surface cooling device for lithium battery separator production according to claim 2, wherein: The bearing plate members (508) are equidistantly and fixedly arranged on the outer side wall of the bearing shaft body (507). The end of the bearing plate member (508) is provided with a soft hair cleaning scraper (509). The connecting round block (504) is positioned by the provided positioning structure, and the positioning structure is connected to the support shaft (501).

5. The film surface cooling device for lithium battery separator production according to claim 1, characterized in that: The positioning structure includes a cylindrical pull head (601), a positioning card shaft (602), an auxiliary spring (603) and a spherical head (604). The positioning card shaft (602) is movably inserted into the support shaft (501). One end of the positioning card shaft (602) is fixedly provided with a cylindrical pull head (601), and the other end of the positioning card shaft (602) extends into the receiving cavity (503), and a spherical head (604) is arranged at the end. The cylindrical pull head (601) is fixedly provided with an auxiliary spring (603) at the end connected to the positioning card shaft (602). The other end of the auxiliary spring (603) is fixedly provided on the outer side wall of the support shaft (501). The positioning card shaft (602) corresponds to the positioning card slot (505) on the outer side wall of the connecting round block (504) in terms of setting position.

6. The membrane surface cooling device for lithium battery separator production according to claim 1, wherein: A cooling auxiliary limiting fitting is provided on the guiding roller (22). The cooling auxiliary limiting fitting includes a limiting control groove (701), a control slider (702), a connecting body (703), a positioning threaded column (704), a knob head (705), a limiting support body (706), a bearing plate (707), a limiting column (708), a fixed shaft member (709), a connecting screw groove (710), a limiting pressure cylinder (711), auxiliary balls (712), a limiting screw plate (713) and a connecting fitting; the limiting control groove (701) is provided on the outer side wall of the guiding roller (22), and the control slider (702) is slidably arranged in the limiting control groove (701), the control slider (702) is fixedly connected to the connecting body (703), a cylindrical threaded groove is arranged in the connecting body (703), and the cylindrical threaded groove extends into the control slider (702), the positioning threaded column (704) is threadedly connected to the cylindrical threaded groove in a matching manner, one end of the positioning threaded column (704) is fixedly provided with the knob head (705), the limiting support body (706) is fixedly arranged at the side position of the connecting body (703), and one end of the limiting support body (706) is fixedly provided with the bearing plate (707), one side of the bearing plate (707) is fixedly provided with the limiting column (708), one end of the limiting column (708) is fixedly provided with the fixed shaft member (709), one end of the fixed shaft member (709) is provided with the connecting screw groove (710), the fixed shaft member (709) is sleeved with the limiting pressure cylinder (711), the inner side wall of the limiting pressure cylinder (711) is equidistantly embedded and movably provided with the auxiliary balls (712), the limiting screw plate (713) is threadedly connected to the connecting screw groove (710), and the bearing plate (707) is also connected to the connecting fitting.

7. The film surface cooling device for lithium battery separator production according to claim 6, characterized in that: The connecting fitting includes a positioning piece (801), a support bar (802), an auxiliary bearing body (803) and a limiting ring body (804); the positioning piece (801) is fixedly arranged at one end of the support bar (802), the other end of the support bar (802) is sleeved with the auxiliary bearing body (803), the positioning piece (801) is fixedly connected to the bearing plate (707) by screws, and the auxiliary bearing body (803) is embedded in the limiting ring body (804).

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