Dry-method diaphragm thinning mechanism

Abstract

The utility model discloses a dry-method diaphragm thinning mechanism which comprises a roller assembly, the roller assembly comprises two oppositely-arranged mounting racks, a lower roller and an upper roller, the two ends of the lower roller are rotatably arranged on two lower bearing seats respectively, the two lower bearing seats are arranged in the two mounting racks respectively, and the upper roller is arranged on the lower bearing seats. The upper roller and the lower roller are oppositely arranged up and down, a gap is formed between the roller surface of the upper roller and the roller surface of the lower roller, the two ends of the upper roller are rotationally installed on the two upper bearing seats respectively, and the two upper bearing seats are arranged in the two installation frames respectively and located above the two lower bearing seats respectively. The lower cleaning assembly is positioned on one side of the lower roller; the upper cleaning assembly is positioned above the upper roller; the lower cleaning assembly and the upper cleaning assembly each comprise a first cleaning base, a second cleaning base, a cleaning driving piece, a cleaning shaft and a scraper. According to the utility model, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a dry film thinning mechanism. Background Art

[0002] At present, a calendering device is generally used to calender electrode powder (electrode powder is a mixture of electrode active material, adhesive and conductive agent) to produce dry diaphragms. The dry diaphragms produced in this way are generally thicker, so they usually need to be thinned to obtain a finished diaphragm of the required thickness.

[0003] The existing thinning mechanism generally includes a roller assembly, which includes two mounting frames arranged opposite to each other, a lower roller and an upper roller, the two ends of the lower roller are rotatably mounted on two lower bearing seats, the two lower bearing seats are respectively arranged in two mounting frames, the upper roller and the lower roller are arranged opposite to each other up and down, there is a gap between the roller surface of the upper roller and the roller surface of the lower roller, the two ends of the upper roller are rotatably mounted on two upper bearing seats, the two upper bearing seats are respectively arranged in two mounting frames and are respectively located above the two lower bearing seats. In actual application, after the dry film enters the gap between the upper roller and the lower roller, the upper roller and the lower roller rotate in opposite directions to roll the dry film, so that the dry film is thinned, and a finished film of the desired thickness can be obtained. During the rolling process of the dry-process membrane, the roller surfaces of the lower roller and the upper roller are usually adhered to the electrode powder of the dry-process membrane, and the electrode powder will affect the subsequent rolling of the dry-process membrane. Therefore, after the dry-process membrane is rolled by the upper and lower rollers, it is usually necessary to scrape off the electrode powder adhered to the roller surfaces of the lower roller and the upper roller to clean the roller surfaces of the lower roller and the upper roller.

[0004] Conventionally, the electrode powder adhered to the roller surface of the lower roller and the roller surface of the upper roller is scraped off by manually holding a scraper to clean the roller surface of the lower roller and the roller surface of the upper roller. This manual cleaning method reduces production efficiency and increases production costs. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a dry film thinning mechanism, which improves production efficiency and reduces production costs.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A dry film thinning mechanism, comprising a roller assembly, the roller assembly comprising two mounting frames arranged opposite to each other, a lower roller and an upper roller, the two ends of the lower roller are rotatably mounted on two lower bearing seats, the two lower bearing seats are respectively arranged in the two mounting frames, the upper roller and the lower roller are arranged opposite to each other up and down, there is a gap between the roller surface of the upper roller and the roller surface of the lower roller, the two ends of the upper roller are rotatably mounted on the two upper bearing seats, the two upper bearing seats are respectively arranged in the two mounting frames and are respectively located at the two lower shafts The support seat also includes a lower cleaning assembly located on one side of the lower roller and an upper cleaning assembly located above the upper roller; the lower cleaning assembly and the upper cleaning assembly each include a first cleaning seat, a second cleaning seat, a cleaning drive, a cleaning shaft and a scraper, the first cleaning seat and the second cleaning seat are arranged opposite to each other, the cleaning drive is arranged on the inner side of the first cleaning seat, the first end of the cleaning shaft is connected to the cleaning drive, and the second end of the cleaning shaft is rotatably arranged on the inner side of the second cleaning seat; in the lower cleaning assembly, the first cleaning seat is arranged on one of the The inner side of a mounting frame and the second cleaning seat are arranged on one side of a supporting plate, the supporting plate is connected to one end of the other mounting frame, the cleaning shaft is arranged in parallel with the lower roller, the scraper is arranged obliquely with respect to the lower roller, the first end of the scraper is connected to the cleaning shaft, the second end of the scraper is close to the roller surface of the lower roller, the cleaning drive member is used to drive the cleaning shaft to rotate, thereby driving the scraper to rotate around the axis of the cleaning shaft, so that the second end of the scraper can be pressed against the roller surface of the lower roller or separated from the roller surface of the lower roller; the upper cleaning member In the cleaning assembly, the first cleaning seat is arranged at the top of one of the upper bearing seats, and the second cleaning seat is arranged at the top of the other upper bearing seat. The cleaning shaft is arranged in parallel with the upper roller, and the scraper is arranged at an angle relative to the upper roller. The first end of the scraper is connected to the cleaning shaft, and the second end of the scraper is close to the roller surface of the upper roller. The cleaning drive is used to drive the cleaning shaft to rotate, thereby driving the scraper to rotate around the axis of the cleaning shaft, so that the second end of the scraper can be pressed against the roller surface of the upper roller or separated from the roller surface of the upper roller.

[0008] As a preferred technical solution, the lower cleaning assembly and the upper cleaning assembly both include a first scraper clamp and a second scraper clamp, the second scraper clamp is detachably connected to one side of the first scraper clamp, the first end of the second scraper clamp and the first end of the first scraper clamp are detachably connected to the cleaning shaft through a connecting member, and the first end of the scraper is clamped between the second end of the second scraper clamp and the second end of the first scraper clamp.

[0009] As a preferred technical solution, the connecting part includes a clamping plate and an expansion sleeve, the expansion sleeve is arranged on the outer periphery of the cleaning shaft, one end of the clamping plate is arranged on the outer periphery of the expansion sleeve, and the other end of the clamping plate has a clamping position, and the clamping position cooperates with the first end of the first scraper clamping member and the second scraper clamping member, and two clamping mounting holes are provided on both sides of the other end of the clamping plate, and the two clamping mounting holes are connected with the clamping position, and the first scraper clamping member and the second scraper clamping member are provided with waist-shaped holes corresponding to the two clamping mounting holes, and clamping fasteners are installed in the waist-shaped holes and the corresponding two clamping mounting holes.

[0010] As a preferred technical solution, the lower cleaning assembly and the upper cleaning assembly both include a cleaning support seat, which is connected to the cleaning drive member and has a through hole, through which the cleaning support seat is sleeved on the outer periphery of the cleaning shaft, a cleaning bearing is provided in the through hole, and the cleaning bearing is sleeved on the outer periphery of the cleaning shaft.

[0011] As a preferred technical solution, the two upper bearing seats are respectively slidably arranged in the two mounting frames, and the rolling roller assembly also includes two pressure-applying driving members arranged opposite to each other, and the two pressure-applying driving members are respectively arranged at the top ends of the two mounting frames, and the top ends of the mounting frames are provided with through holes connected to the interior of the mounting frames, and the ends of the output shafts of the two pressure-applying driving members respectively pass through the through holes of the two mounting frames and are respectively located in the two mounting frames, and the ends of the output shafts of the two pressure-applying driving members are respectively connected to two pressure blocks, and the top ends of the two upper bearing seats are respectively provided with two mounting members, and the first cleaning seat and the second cleaning seat are respectively arranged at the top ends of the two mounting members, and the two pressure blocks are respectively located above the two mounting members and the two pressure blocks are respectively connected to the two mounting members through two pressure sensors, and the first cleaning seat and the second cleaning seat are located between the two pressure blocks.

[0012] As a preferred technical solution, two lower mounting shafts are respectively formed at both ends of the lower rolling roller, and the two lower mounting shafts respectively correspond to the two lower bearing seats, the lower bearing seat is provided with a lower mounting hole, and the lower mounting shaft passes through the lower mounting holes of the corresponding lower bearing seats, and the lower mounting holes are successively provided with a first lower bearing and a second lower bearing in the direction away from the center of the lower rolling roller, and the first lower bearing and the second lower bearing are both sleeved on the outer circumference of the corresponding lower mounting shaft, and the first lower bearing cover and the second lower bearing cover are respectively installed on the inner and outer sides of the lower bearing seat, and the first lower bearing cover and the second lower bearing cover are both sleeved on the outer circumference of the corresponding lower mounting shaft, and the first lower bearing cover and the second lower bearing cover are respectively abutted against the first lower bearing and the second lower bearing, and the lower mounting shaft is threadedly connected with a lower locking nut, and the lower locking nut abuts against the side of the corresponding second lower bearing cover away from the lower bearing seat.

[0013] As a preferred technical solution, two upper mounting shafts are respectively formed at both ends of the upper rolling roller, and the two upper mounting shafts correspond to the two upper bearing seats respectively. The upper bearing seat is provided with an upper mounting hole, and the upper mounting shaft passes through the upper mounting hole of the corresponding upper bearing seat, and the upper mounting hole is sequentially provided with a first upper bearing and a second upper bearing in the direction away from the center of the upper rolling roller, and the first upper bearing and the second upper bearing are both sleeved on the outer circumference of the corresponding upper mounting shaft, and the first upper bearing cover and the second upper bearing cover are respectively installed on the inner and outer sides of the upper bearing seat, and the first upper bearing cover and the second upper bearing cover are both sleeved on the outer circumference of the corresponding upper mounting shaft, and the first upper bearing cover and the second upper bearing cover are respectively abutted against the first upper bearing and the second upper bearing, and the upper mounting shaft is threadedly connected with an upper locking nut, and the upper locking nut abuts against the side of the corresponding second upper bearing cover away from the upper bearing seat.

[0014] As a preferred technical solution, the first lower bearing and the first upper bearing are both cylindrical roller bearings, and the second lower bearing and the second upper bearing are both angular contact bearings.

[0015] As a preferred technical solution, the rolling roller assembly also includes a lower rolling roller driving member and an upper rolling roller driving member, the lower rolling roller driving member is arranged on the outer side of one of the lower bearing seats, and the upper rolling roller driving member is arranged on the outer side of one of the upper bearing seats; among the two lower mounting shafts, one end of the lower mounting shaft away from the center of the lower rolling roller is connected to the lower rolling roller driving member, and the lower rolling roller driving member is used to drive the lower rolling roller to rotate through the lower mounting shaft connected thereto; among the two upper mounting shafts, one end of the upper mounting shaft away from the center of the upper rolling roller is connected to the upper rolling roller driving member, and the upper rolling roller driving member is used to drive the upper rolling roller to rotate through the upper mounting shaft connected thereto.

[0016] As a preferred technical solution, it also includes an unwinding assembly, which includes an unwinding shaft, which corresponds to the lower roller, one end of which passes through the support plate mounting hole on one side of the support plate and is connected to the magnetic powder brake or is connected to the unwinding drive member through a magnetic powder clutch, and the unwinding shaft can rotate relative to the support plate.

[0017] As a preferred technical solution, it also includes a guide plate located between the unwinding shaft and the gap, the two ends of the guide plate are respectively arranged on the inner sides of the two mounting frames and the guide plate portion protrudes from one end of the two mounting frames, and the guide plate is arranged horizontally.

[0018] The beneficial effects of the utility model are as follows: the utility model provides a lower cleaning component and an upper cleaning component, and the lower cleaning component and the upper cleaning component both include a cleaning drive, a cleaning shaft and a scraper. The cleaning drive of the lower cleaning component drives the scraper of the lower cleaning component to rotate, so that the second end of the scraper can be pressed against the roller surface of the lower roller. When the lower roller rotates, the second end of the scraper continuously rubs against the roller surface of the lower roller, so that the electrode powder adhered to the roller surface of the lower roller can be automatically scraped off by the scraper, so that the roller surface of the lower roller can be automatically cleaned. The cleaning drive of the upper cleaning component drives the scraper of the upper cleaning component to rotate, so that the second end of the scraper structure can be pressed against the roller surface of the upper roller. When the upper roller rotates, the second end of the scraper continuously rubs against the roller surface of the upper roller, so that the electrode powder adhered to the roller surface of the upper roller can be automatically scraped off by the scraper, so that the roller surface of the upper roller can be cleaned. Compared with the prior art, the production efficiency is improved and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural schematic diagram of a dry film thinning mechanism provided by an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A cross-sectional schematic diagram of a dry film thinning mechanism is shown;

[0022] Figure 3 yes Figure 1 A schematic structural diagram of an unwinding assembly of a dry film thinning mechanism is shown;

[0023] Figure 4 yes Figure 1 A schematic structural diagram of a roller assembly of a dry film thinning mechanism at a first angle;

[0024] Figure 5 yes Figure 4 A schematic structural diagram of a second angle of the roller assembly shown;

[0025] Figure 6 yes Figure 4 A schematic left side view of the roller assembly shown;

[0026] Figure 7 yes Figure 4 A schematic structural diagram of a lower roller and a lower cleaning assembly of the roller assembly shown;

[0027] Figure 8 yes Figure 4 A schematic cross-sectional view of the lower roll of the roll assembly shown;

[0028] Fig. 9 yes Figure 7 The schematic diagram of the structure of the cleaning component shown below;

[0029] Fig.10 yes Figure 4 A schematic structural diagram of an upper roller and an upper cleaning assembly of the roller assembly shown;

[0030] Fig.11 yes Figure 4 A schematic cross-sectional view of an upper roller of the roller assembly shown;

[0031] Fig.12 yes Fig.10 Schematic diagram of the structure of the cleaning component shown. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0033] Please refer to Figure 1 and Figure 2 An embodiment of the present invention provides a dry film thinning mechanism, comprising an unwinding assembly 10, a roller assembly 30, a lower cleaning assembly 50, an upper cleaning assembly 60 and a guide plate 70. The unwinding assembly 10 and the roller assembly 30 are arranged in sequence from front to back.

[0034] The unwinding assembly 10 is used to unwind the dry film of the dry film roll 100. Figure 3As shown, the unwinding assembly 10 includes an unwinding shaft 13 for unwinding the dry film of the dry film roll 100. The unwinding shaft 13 is located on the left side of the support plate 11. A support plate mounting hole is provided on one side of the support plate 11. One end of the unwinding shaft 13 passes through the support plate mounting hole of the support plate 11 and is connected to the magnetic powder brake 14. The unwinding shaft 13 can rotate relative to the support plate 11. The support plate 11 is arranged on one side of the mounting support seat 111 to provide mounting support for the support plate 11. The support plate 11 and the mounting support seat 111 form an L-shaped structure. The magnetic powder brake 14 is arranged on the other side of the support plate 11 through the mounting bracket 141, and the mounting bracket 141 is arranged around the outer periphery of the unwinding shaft 13. The magnetic powder brake 14 can realize the control of the rotational torque of the unwinding shaft 13, thereby realizing the control of the tension of the dry film unwinding. The tension control accuracy is high and stable tension can be provided.

[0035] In an alternative solution, one end of the unwinding shaft 13 passes through the support plate mounting hole of the support plate 11 and is connected to the unwinding drive member through a magnetic powder clutch. The unwinding drive member is a motor. The unwinding drive member drives the unwinding shaft 13 to rotate through the magnetic powder clutch, so that the dry film of the dry film roll 100 can be unwound through the unwinding shaft 13. The magnetic powder clutch can also control the rotational torque of the unwinding shaft 13, thereby also controlling the tension of the dry film unwinding.

[0036] Combination Figure 2 , Figures 4 to 6 As shown, the roller assembly 30 is used to roll the unwound dry film to thin the dry film into a finished film of a desired thickness. The roller assembly 30 includes a mounting frame 31a, a mounting frame 31b, a lower roller 32, an upper roller 33, two pressure driving members 41 arranged opposite to each other on the left and right, a lower roller driving member and an upper roller driving member. The mounting frame 31a and the mounting frame 31b are arranged opposite to each other on the left and right. The mounting frame 31a and the mounting frame 31b are connected by a crossbeam, and the number of crossbeams can be set according to actual conditions. The lower roller 32 and the upper roller 33 are both steel rollers.

[0037] The two mounting frames 31a and 31b are both U-shaped structures. The bottom ends of the two mounting frames 31a and 31b are respectively arranged on the left and right sides of the top of the substrate 311, and the openings of the two mounting frames 31a and 31b are both facing the substrate 311. In this embodiment, the mounting frame is composed of two columns arranged front and back oppositely and a horizontal plate arranged on the top of the two columns. The two columns and the horizontal plate enclose the interior of the mounting frame. The opening of the mounting frame is formed between the bottom ends of the two columns. The bottom ends of the two columns are arranged on the corresponding side of the top of the substrate 311. One end of the mounting frame 31b, i.e., the front end, is provided with a mounting support seat 111, and the support plate 11 is arranged on the side of the mounting support seat 111 away from the mounting frame 31b, so that the support plate 11 is connected to the front end of the mounting frame 31b through the mounting support seat 111. In the utility model, the inner side of the mounting frame refers to the side where the two mounting frames 31a and 31b are close to each other, and the outer side of the mounting frame refers to the side where the two mounting frames 31a and 31b are away from each other.

[0038] The lower roller 32 is located between the two mounting frames 31a and 31b, and both ends of the lower roller 32 are rotatably mounted on two lower bearing seats 321, respectively, the two lower bearing seats 321 are respectively arranged in the two mounting frames 31a and 31b, and the two lower bearing seats 321 are respectively arranged at the top of the base plate 311. The unwinding shaft 13 corresponds to the lower roller 32.

[0039] Specific, combined Figure 7 and Figure 8As shown, two lower mounting shafts 322 are formed at both ends of the lower roller 32. The two lower mounting shafts 322 correspond to the two lower bearing seats 321 respectively. The lower bearing seat 321 is provided with a lower mounting hole penetrating the inner side and the outer side thereof. The lower mounting shaft 322 is arranged through the lower mounting hole of the corresponding lower bearing seat 321, and the first lower bearing 3213 and the second lower bearing 3214 are sequentially arranged in the lower mounting hole in a direction away from the center of the lower roller 32. The first lower bearing 3213 and the second lower bearing 3214 are both sleeved on the outer circumference of the corresponding lower mounting shaft 322 to provide rotation support for the corresponding lower mounting shaft 322. The first lower bearing cover 3211 and the second lower bearing cover 3212 are respectively installed on the inner side and the outer side of the lower bearing seat 321. The first lower bearing cover 3211 and the second lower bearing cover 3212 are both sleeved on the outer circumference of the corresponding lower mounting shaft 322. The first lower bearing cover 3211 and the second lower bearing cover 3212 are respectively abutted against the first lower bearing 3213 and the second lower bearing 3214 to limit the first lower bearing 3213 and the second lower bearing 3214 therebetween. The lower mounting shaft 322 is threadedly connected with a lower locking nut 3215. The lower locking nut 3215 is close to the end of the lower mounting shaft 322 away from the center of the lower roller 32. The lower locking nut 3215 abuts against the side of the corresponding second lower bearing cover 3212 away from the lower bearing seat 321 to lock the corresponding lower mounting shaft 322 on the corresponding lower bearing seat 321. In this embodiment, the first lower bearing 3213 and the second lower bearing 3214 on the outer periphery of the lower mounting shaft 322 located on the left are installed in a floating manner, and the first lower bearing 3213 and the second lower bearing 3214 on the outer periphery of the lower mounting shaft 322 located on the right are installed in a fixed manner. The first lower bearing 3213, the second lower bearing 3214, the first lower bearing cover 3211, the second lower bearing cover 3212 and the lower locking nut 3215 can realize the installation between the lower roller 32 and the two lower bearing seats 321, and the installation accuracy is high. The two lower mounting shafts 322 are respectively locked on the corresponding lower bearing seats 321 by the lower locking nuts 3215, which can ensure that the runout of the roller surface of the lower roller 32 meets the product requirements and ensure the thickness of the finished film after thinning. The number of lower locking nuts 3215 can be set according to actual conditions. The inner side of the lower bearing seat 321 refers to the side of the lower bearing seat 321 close to the center of the lower roller 32 , and the outer side of the lower bearing seat 321 refers to the side of the lower bearing seat 321 away from the center of the lower roller 32 .

[0040] The first lower bearing 3213 is a cylindrical roller bearing, and the second lower bearing 3214 is an angular contact bearing. The angular contact bearing can provide axial support force to the lower roller 32, and the cylindrical roller bearing can provide radial support force to the lower roller 32.

[0041] The lower roller driving member is arranged on the outer side of the lower bearing seat 321 located on the right. Specifically, the lower roller driving member includes a lower driving motor 341 and a lower reducer 342. The lower driving motor 341 is arranged on the lower reducer 342, and the lower reducer 342 is arranged on the outer side of the lower bearing seat 321 located on the right through the lower reducer seat 3421. The output shaft of the lower driving motor 341 is connected to the input shaft of the lower reducer 342.

[0042] The ends of the two lower mounting shafts 322 away from the center of the lower roller 32 protrude from the outside of the two mounting frames 31a and 31b respectively. The end of the lower mounting shaft 322 located on the left and away from the center of the lower roller 32 is connected to the lower rotary joint 36, and the end of the mounting shaft 322 located on the right and away from the center of the lower roller 32 is connected to the output shaft of the lower reducer 342 of the lower roller driving member. The lower driving motor 341 is used to drive the lower mounting shaft 322 located on the right to rotate through the lower reducer 342, thereby driving the lower roller 32 and the lower mounting shaft 322 located on the left to rotate, and further driving the lower rotary joint 36 to rotate. The lower roller 32 and the two lower mounting shafts 322 are provided with a lower oil passage 323, and the lower oil passage 323 is connected to the lower rotary joint 36. Hot oil or cooling oil can be introduced into the lower oil passage 323 through the lower rotary joint 36, so that the temperature of the roller surface of the lower roller 32 is kept constant, thereby ensuring the quality of the finished film after thinning.

[0043] The upper roller 33 is located between the two mounting frames 31a and 31b and is arranged opposite to the lower roller 32 in the vertical direction. There is a gap between the roller surface of the upper roller 33 and the roller surface of the lower roller 32. The two ends of the upper roller 33 are rotatably mounted on two upper bearing seats 331, respectively. The two upper bearing seats 331 are respectively arranged in the two mounting frames 31a and 31b and are respectively located above the two lower bearing seats 321. In actual application, the rotation direction of the upper roller 33 is opposite to that of the lower roller 32.

[0044] In this embodiment, Figure 6 and Fig.10 As shown, two upper bearing seats 331 are respectively slidably arranged in two mounting frames 31a and 31b through a slide rail assembly, and the two upper bearing seats 331 can move up and down relative to the corresponding mounting frames. Specifically, the slide rail assembly includes two first slide rails 3311, and the two first slide rails 331 are respectively arranged on the front inner wall and the rear inner wall of the corresponding mounting frame, and the length direction of the first slide rail 3311 is the same as the height direction of the mounting frame. The first slide rail 3311 is slidably matched with a first slider 3312, and the first slider 3312 can slide up and down along the first slide rail 3311. The first sliders 3312 of the two first slide rails 3311 are respectively arranged on both sides of the corresponding upper bearing seats 331. The number of first sliders 3312 slidably matched with each first slide rail 3311 can be set according to actual conditions.

[0045] Specific, combined Fig.10 and Fig.11 As shown, two upper mounting shafts 332 are formed at both ends of the upper roller 33. The two upper mounting shafts 332 correspond to the two upper bearing seats 331 respectively. The upper bearing seat 331 is provided with an upper mounting hole that passes through the inner side and the outer side thereof. The upper mounting shaft 332 is arranged through the upper mounting hole of the corresponding upper bearing seat 331, and the first upper bearing 3315 and the second upper bearing 3316 are sequentially arranged in the upper mounting hole in a direction away from the center of the upper roller 33. The first upper bearing 3315 and the second upper bearing 3316 are both sleeved on the outer circumference of the corresponding upper mounting shaft 332 to provide rotation support for the corresponding upper mounting shaft 332. The first upper bearing cover 3313 and the second upper bearing cover 3314 are respectively installed on the inner side and the outer side of the upper bearing seat 331. The first upper bearing cover 3313 and the second upper bearing cover 3314 are both sleeved on the outer circumference of the corresponding upper mounting shaft 332. The first upper bearing cover 3313 and the second upper bearing cover 3314 are respectively abutted against the first upper bearing 3315 and the second upper bearing 3316 to limit the first upper bearing 3315 and the second upper bearing 3316 therebetween. The upper mounting shaft 332 is threadedly connected with an upper locking nut 3317. The upper locking nut 3317 is close to the end of the upper mounting shaft 332 away from the center of the upper roller 33. The upper locking nut 3317 abuts against the side of the corresponding second upper bearing cover 3314 away from the upper bearing seat 331 to lock the corresponding upper mounting shaft 332 on the corresponding upper bearing seat 331. In this embodiment, the first upper bearing 3315 and the second upper bearing 3316 on the outer periphery of the upper mounting shaft 332 located on the left are installed in a floating manner, and the first upper bearing 3315 and the second upper bearing 3316 on the outer periphery of the upper mounting shaft 332 located on the right are installed in a fixed manner. The first upper bearing 3315, the second upper bearing 3316, the first upper bearing cover 3313, the second upper bearing cover 3314 and the upper locking nut 3317 are provided to realize the installation between the upper roller 33 and the two upper bearing seats 331, and the installation precision is high. The two upper mounting shafts 332 are respectively locked on the corresponding upper bearing seats 331 by the upper locking nuts 3317, which can ensure that the runout of the roller surface of the upper roller 33 meets the product requirements and ensure the thickness of the finished film after thinning. The number of upper locking nuts 3317 can be set according to the actual situation. The inner side of the upper bearing seat 331 refers to the side of the upper bearing seat 331 close to the center of the upper roller 33 , and the outer side of the upper bearing seat 331 refers to the side of the upper bearing seat 331 away from the center of the upper roller 33 .

[0046] The first upper bearing 3315 is a cylindrical roller bearing, and the second upper bearing 3316 is an angular contact bearing. The angular contact bearing can provide axial support force to the upper roller 33, and the cylindrical roller bearing can provide radial support force to the upper roller 33.

[0047] The upper roller driving member is arranged on the outer side of the upper bearing seat 331 located on the right. Specifically, the upper roller driving member includes an upper driving motor 351 and an upper reducer 352. The upper driving motor 351 is arranged on the upper reducer 352, and the upper reducer 352 is arranged on the outer side of the upper bearing seat 331 located on the right through the upper reducer seat 3521. The output shaft of the upper driving motor 351 is connected to the input shaft of the upper reducer 352. The upper driving motor 351, the upper reducer seat 3521 and the upper reducer 352 can move up and down with the upper bearing seat 331 on the right.

[0048] The ends of the two upper mounting shafts 332 away from the center of the upper roller 33 protrude from the outside of the two mounting frames 31a and 31b respectively. The end of the upper mounting shaft 332 located on the left and away from the center of the upper roller 33 is connected to the upper rotary joint 37, and the end of the mounting shaft 332 located on the right and away from the center of the upper roller 33 is connected to the output shaft of the upper reducer 352 of the upper roller driving member. The upper driving motor 351 is used to drive the upper mounting shaft 332 located on the right to rotate through the upper reducer 352, thereby driving the upper roller 33 and the upper mounting shaft 332 located on the left to rotate, and further driving the upper rotary joint 37 to rotate. The upper roller 33 and the two upper mounting shafts 332 are provided with an upper oil passage 333 inside, and the upper oil passage 333 is connected to the upper rotary joint 37. Hot oil or cooling oil can be introduced into the upper oil passage 333 through the upper rotary joint 37, so that the temperature of the roller surface of the upper roller 33 is kept constant, thereby ensuring the quality of the finished film after thinning.

[0049] The two pressure driving members 41 are respectively arranged at the top of the two mounting frames 31a and 31b. The pressure driving members 41 are preferably gas-liquid booster cylinders. The top of the mounting frame is respectively provided with through holes connected to the inside of the mounting frame, and the ends of the output shafts of the two pressure driving members 41 pass through the through holes of the two mounting frames 31a and 31b respectively and are respectively located in the two mounting frames 31a and 31b. The ends of the output shafts of the two pressure driving members 41 are respectively connected to two pressure blocks 42, and the tops of the two upper bearing seats 331 are respectively provided with two mounting members 511, and the two pressure blocks 42 are respectively located above the two mounting members 511 and the two pressure blocks 42 are respectively connected to the two mounting members 511 through two pressure sensors (not shown in the figure). The two pressure driving components 41 are respectively used to drive the two pressure blocks 42 to move up and down, so that the two mounting components 511 can be driven to move up and down through the two pressure sensors, and then the two upper bearing seats 331 can be driven to move up and down. The up and down movement of the two upper bearing seats 331 can drive the two upper mounting shafts 332 to move up and down, thereby driving the upper roller 33 and the upper rotary joint 37 to move up and down. Through the downward movement of the upper roller 33, downward pressure can be achieved through the upper roller 33 to provide rolling pressure. The pressure applied downward by the upper roller 33 can be detected by the pressure sensor.

[0050] like Figure 6 As shown, the top of the lower bearing seat 321 is provided with a second slide rail, and the second slide rail is slidably matched with a wedge block 383, and the wedge block 383 slides forward and backward along the second slide rail. The top of the wedge block 383 is a first inclined surface, and the first inclined surface is inclined downward in the direction close to the front ends of the two mounting frames 31a and 31b. The bottom end of the upper bearing seat 331 is a second inclined surface, and the second inclined surfaces of the two upper bearing seats 331 are matched with the first inclined surfaces of the wedge blocks 383 at the top ends of the two lower bearing seats 321 respectively. The other ends of the two mounting frames 31a and 31b, i.e., the rear ends, are respectively provided with two adjusting motors 381. The ends of the output shafts of the two adjusting motors 381 are respectively connected with two screw rods 382. The two screw rods 382 correspond to the two lower bearing seats 321 respectively. The ends of the two screw rods 382 away from the corresponding adjusting motors 381 respectively pass through the through holes at the rear ends of the two mounting frames 31a and 31b and extend into the two mounting frames 31a and 31b respectively. The through holes are provided with rotating bearings to provide rotating support for the corresponding screw rods 382. The wedge block 383 has a screw hole. The wedge blocks 383 at the top ends of the two lower bearing seats 321 are respectively threadedly matched with the two screw rods 382 through their respective screw holes. The corresponding screw rods 382 are respectively driven to rotate by the two adjusting motors 381, thereby driving the corresponding wedge block 383 to slide back and forth. When it is necessary to increase the width of the gap between the roller surface of the upper roller 33 and the roller surface of the lower roller 32, the two adjusting motors 381 respectively drive the corresponding screw rods 382 to rotate, thereby driving the corresponding wedge blocks 383 to move forward. Under the action of the first inclined surface and the second inclined surface, the wedge blocks 383 at the top ends of the two lower bearing seats 321 can drive the two upper bearing seats 331 to move upward, thereby driving the upper roller 33 to move upward, so that the width of the gap between the roller surface of the upper roller 33 and the roller surface of the lower roller 32 is increased. When the width of the gap between the roller surface of the upper roller 33 and the roller surface of the lower roller 32 needs to be adjusted to be smaller, the two adjusting motors 381 are used to drive the corresponding screw rods 382 to rotate, thereby driving the corresponding wedge block 383 to move backward. When the wedge block 383 reaches the predetermined position, there is a gap between the first inclined surface and the second inclined surface. At this time, the two upper bearing seats 331 are driven downward by the two pressure driving members 42 until the first inclined surface and the second inclined surface match each other, so that the width of the gap between the roller surface of the upper roller 33 and the roller surface of the lower roller 32 is adjusted to be smaller. By adjusting the width of the gap between the roller surface of the upper roller 33 and the roller surface of the lower roller 32, it can adapt to the thinning process of dry-process membranes of different thicknesses, reduce costs, and have a wide range of applications.

[0051] Combination Figure 2 , Figures 4 to 7 , Fig. 9As shown, the lower cleaning assembly 50 is located at one side, such as the front side, of the lower roller 32. The lower cleaning assembly 50 includes a first cleaning seat 51a, a second cleaning seat 51b, a cleaning drive 52, a cleaning shaft 53, a first scraper clamp 541, a second scraper clamp 542 and a scraper 543.

[0052] The first cleaning seat 51a and the second cleaning seat 51b are arranged opposite to each other on the left and right. The first cleaning seat 51a and the second cleaning seat 51b are respectively close to the front ends of the two mounting frames 31a and 31b. The first cleaning seat 51a is arranged on the inner side of the mounting frame 31a, and the second cleaning seat 51b is arranged on one side of the support plate 11, so that the second cleaning seat 51b can be connected to the front end of the mounting frame 31b through the support plate 11 and the mounting support seat 111.

[0053] The cleaning drive 52 is preferably a rotary cylinder, and the cleaning drive 52 is arranged on the inner side of the first cleaning seat 51a. The cleaning shaft 53 is located below the horizontal radial direction of the lower roller 21, and the cleaning shaft 53 is arranged in parallel with the lower roller 32. The cleaning shaft 53 is located below the horizontal radial direction of the lower roller 32, and the length direction of the cleaning shaft 53 is the same as the length direction of the lower roller 32. The first end of the cleaning shaft 53 is connected to the cleaning drive 52, and the second end of the cleaning shaft 53 is rotatably arranged on the inner side of the second cleaning seat 51b. In the utility model, the inner side of the first cleaning seat 51a refers to a side of the first cleaning seat 51a close to the second cleaning seat 51b, the outer side of the first cleaning seat 51a refers to a side of the first cleaning seat 51a away from the second cleaning seat 51b, the inner side of the second cleaning seat 51b refers to a side of the second cleaning seat 51b close to the first cleaning seat 51a, and the outer side of the second cleaning seat 51b refers to a side of the second cleaning seat 51b away from the first cleaning seat 51a.

[0054] The second end of the cleaning shaft 53 is rotatably disposed on the inner side of the second cleaning seat 51b. Specifically, a mounting hole is provided on the inner side of the second cleaning seat 51b, and the second end of the cleaning shaft 53 is rotatably disposed in the mounting hole. A rotating bearing 531 is provided in the mounting hole, and the rotating bearing 531 is sleeved on the outer periphery of the second end of the cleaning shaft 53 to provide rotation support for the cleaning shaft 53.

[0055] The second scraper clamp 542 is located above the first scraper clamp 541, and the second scraper clamp 542 is detachably connected to one side of the first scraper clamp 541. Specifically, the first scraper clamp 541 is provided with a first mounting hole, and the second scraper clamp 542 is provided with a second mounting hole 5421 corresponding to the first mounting hole. Mounting fasteners such as bolts are installed in the second mounting hole 5421 and the corresponding first mounting hole. By disassembling and assembling the mounting fasteners, the first scraper clamp 541 and the second scraper clamp 542 can be disassembled and assembled. The number of the first mounting holes and the second mounting holes 5421 can be set according to actual conditions.

[0056] The first end of the second scraper clamp 542 and one end of the first scraper clamp 541 are detachably connected to the cleaning shaft 53 through a connecting piece. The scraper 543 is arranged to be tilted downward relative to the lower roller 32, and the first end of the scraper 543 is clamped between the second end of the first scraper clamp 541 and the second end of the second scraper clamp 542, so that the scraper 543 is connected to the cleaning shaft 53 through the second scraper clamp 542, the first scraper clamp 541 and the connecting piece. The length direction of the scraper 543, the first scraper clamp 541 and the second scraper clamp 542 is the same as the length direction of the lower roller 32. Figure 2 As shown, the second end of the scraper 543 is close to the roller surface of the lower roller 32, and the second end of the scraper 543 is located below the lower roller 32 in the horizontal radial direction and above the lowest point of the roller surface of the lower roller 32. The cleaning drive member 52 is used to drive the cleaning shaft 53 to rotate, so that the first scraper clamping member 541 and the second scraper clamping member 542 can be driven to rotate around the axis of the cleaning shaft 53 through the connecting member, and then the scraper 543 can be driven to rotate around the axis of the cleaning shaft 53, so that the second end of the scraper 543 can be pressed against the roller surface of the lower roller 32 or separated from the roller surface of the lower roller 32. The second end of the scraper 543 is pressed against the roller surface of the lower roller 32, so that the second end of the scraper 543 can contact the roller surface of the lower roller 32 with a certain pressure. Even if the second end of the scraper 543 forms pressure contact with the roller surface of the lower roller 32, when the lower roller 32 rotates, the electrode powder adhered to the roller surface of the lower roller 32 can be scraped off by the scraper 543 through the continuous friction between the second end of the scraper 543 and the roller surface of the lower roller 32, so that the roller surface of the lower roller 32 can be cleaned.

[0057] In this embodiment, when the second end of the scraper 543 is pressed against the roller surface of the lower roller 32, the angle between the second end of the scraper 543 and the tangent of the contact point of the roller surface of the lower roller 32 is an acute angle, and the angle of the acute angle is between 50-70 degrees.

[0058] In this embodiment, the connecting part includes a clamping piece 551 and an expansion sleeve 552. The expansion sleeve 552 is sleeved on the outer periphery of the cleaning shaft 53. One end of the clamping piece 551 is sleeved on the outer periphery of the expansion sleeve 552. The other end of the clamping piece 551 has a clamping position 5511. The clamping position 551 cooperates with the first end of the first scraper clamping piece 541 and the first end of the second scraper clamping piece 542. Two clamping mounting holes 5512 are respectively provided on both sides of the other end of the clamping piece 551. The two clamping mounting holes 5512 are respectively connected to the clamping position 5511. The first scraper clamp 541 and the second scraper clamp 542 are provided with waist-shaped holes 5422 corresponding to the two clamping and mounting holes 5512, and the waist-shaped holes 5422 correspond to the corresponding two clamping and mounting holes 5512, and the length direction of the waist-shaped holes 5422 is the same as the length direction of the first scraper clamp 541 and the second scraper clamp 542, and clamping fasteners such as bolts are installed in the two clamping and mounting holes 5512 and the waist-shaped holes 5422. By disassembling the clamping fasteners, the first scraper clamp 541, the second scraper clamp 542 and the scraper 543 can be disassembled and assembled as a whole. There are two connecting members in this embodiment, and the two connecting members are arranged at intervals along the axial direction of the cleaning shaft 53. It can be understood that the number of connecting members can be set according to actual conditions. Since the second scraper clamp 542 is detachably arranged on one side of the first scraper clamp 541 and the first end of the first scraper clamp 541 and the first end of the second scraper clamp 542 are detachably connected to the cleaning shaft 53 through a connecting piece, the scraper 543 can be replaced when the scraper 543 is worn.

[0059] Further, the lower cleaning assembly 50 also includes a cleaning support seat 56, which is located between the first cleaning seat 51a and the second cleaning seat 51b. The cleaning support seat 56 is connected to the cleaning drive member 52 through a connecting column 561 and has a through hole. The cleaning support seat 56 is sleeved on the outer periphery of the cleaning shaft 53 through the through hole. The number of connecting columns 561 can be set according to actual conditions. A cleaning bearing is provided in the through hole, and the cleaning bearing is sleeved on the outer periphery of the cleaning shaft 53. The provided cleaning support seat 56 and cleaning bearing provide rotation support for the cleaning shaft 53.

[0060] Combination Figures 4 to 6 , Fig.10 and Fig.12As shown, the upper cleaning assembly 60 is located above the upper roller 33. The structure of the upper cleaning assembly 60 is the same as that of the lower cleaning assembly 50, and also includes a first cleaning seat 51a, a second cleaning seat 51b, a cleaning drive 52, a cleaning shaft 53, a first scraper clamp 541, a second scraper clamp 542 and a scraper 543. The same parts of the upper cleaning assembly 60 and the lower cleaning assembly 50 are not repeated here. Different from the lower cleaning assembly 50, in the upper cleaning assembly 60, the first cleaning seat 51a and the second cleaning seat 51b are respectively arranged at the top ends of two mounting members 511, the first cleaning seat 51a and the corresponding mounting member 511, the second cleaning seat 51b and the corresponding mounting member 511 respectively form an L-shaped structure, the cleaning shaft 53 and the upper roller 33 are arranged in parallel up and down, and the axis of the cleaning shaft 53 and the axis of the upper roller 53 are located in the same vertical plane, the length direction of the cleaning shaft 53 is the same as the length direction of the upper roller 33, and the second cleaning seat 51b and the second cleaning seat 51b are respectively arranged at the top ends of the two mounting members 511, and the cleaning shaft 53 and the upper roller 33 are respectively arranged in parallel up and down, and the axis of the cleaning shaft 53 and the axis of the upper roller 53 are located in the same vertical plane, and the length direction of the cleaning shaft 53 is the same as the length direction of the upper roller 33. The scraper clamp 542 is located behind the first scraper clamp 541. The length direction of the scraper 543, the first scraper clamp 541, and the second scraper clamp 542 is the same as the length direction of the upper roller 33. The scraper 543 is arranged to be tilted backward relative to the upper roller 33, that is, tilted toward the rear end of the two mounting frames 31a and 31b. The second end of the scraper 543 is close to the roller surface of the upper roller 33. The second end of the scraper 543 is located below the highest point of the upper roller 33 and above the upper roller 33 in the horizontal radial direction. Figure 2 As shown, the cleaning drive member 52 is used to drive the cleaning shaft 53 to rotate, so that the first scraper clamping member 541 and the second scraper clamping member 542 can be driven to rotate around the axis of the cleaning shaft 53 through the expansion sleeve 552 and the clamping sheet 551, thereby driving the scraper 543 to rotate, so that the second end of the scraper 543 can be pressed against the roller surface of the upper roller 33 or the second end of the scraper 543 can be separated from the roller surface of the upper roller 33. The second end of the scraper 543 is pressed against the roller surface of the upper roller 33, so that the second end of the scraper 543 can contact the roller surface of the upper roller 33 with a certain pressure, that is, the second end of the scraper 543 is in pressure contact with the roller surface of the upper roller 33. When the upper roller 33 rotates, the second end of the scraper 543 continuously rubs against the roller surface of the upper roller 33, so that the electrode powder adhered to the roller surface of the upper roller 33 can be scraped off by the scraper 543, so that the roller surface of the upper roller 33 can be cleaned. When the second end of the scraper 543 is pressed against the roller surface of the upper roller 33, the angle between the scraper 543 and the tangent line of the contact point of the roller surface of the upper roller 33 is an acute angle, and the acute angle is 20-40 degrees.

[0061] Through the above structure, in actual application, the reel 12 of the dry film stock roll 100 is firstly mounted on the outer periphery of the unwinding shaft 12, and then the dry film of the dry film stock roll 100 is manually pulled so that the head end of the dry film passes into the gap between the lower roller 32 and the upper roller 33, and then the lower roller 32 and the upper roller 33 are driven to rotate in opposite directions by the lower roller driving member and the upper roller driving member respectively, and the upper roller 33 is driven downward by the two pressure driving members 41 to provide the roller. The pressure of the pressure can pull the dry film toward the gap under the rotation of the lower roller 32 and the upper roller 33. The movement of the dry film can drive the unwinding shaft 12 to rotate, so that the dry film of the dry film roll 100 can be unwound. At the same time, the lower roller 32 and the upper roller 33 can rotate in opposite directions to roll the dry film in the gap, so that the dry film can be thinned, so that a finished film of the desired thickness can be obtained.

[0062] After completion, the cleaning drive member 52 of the lower cleaning assembly 50 drives the scraper 543 to rotate in a clockwise direction, so that the second end of the scraper 543 contacts the roller surface of the lower roller 32 with a certain pressure, and the cleaning drive member 52 of the upper cleaning assembly 60 drives the scraper 543 to rotate in a counterclockwise direction, so that the second end of the scraper 543 contacts the roller surface of the upper roller 33 with a certain pressure, as shown in FIG. Figure 2 As shown, the lower roller 32 is then driven to rotate by the lower roller driving member, and the upper roller 33 is driven to rotate by the upper roller driving member, so that the second end of the scraper 543 of the lower cleaning component 50 continuously rubs against the roller surface of the lower roller 32, and the scraper 543 of the upper cleaning component 60 continuously rubs against the roller surface of the upper roller 33, so that the electrode powder adhered to the roller surface of the lower roller 32 can be scraped off by the second end of the scraper 543 of the lower cleaning component 50, and the electrode powder adhered to the roller surface of the upper roller 33 can be scraped off by the scraper 543 of the upper cleaning component 60, so that the roller surfaces of the lower roller 32 and the upper roller 33 can be cleaned.

[0063] The utility model provides a lower cleaning assembly 50 and an upper cleaning assembly 60, each of which includes a cleaning drive 52, a cleaning shaft 53 and a scraper 543. The cleaning drive 52 of the lower cleaning assembly 50 drives the scraper 543 of the lower cleaning assembly 50 to rotate, so that the second end of the scraper 543 can be pressed against the roller surface of the lower roller 32. When the lower roller 32 rotates, the second end of the scraper 543 continuously rubs against the roller surface of the lower roller 32, so that the electrode powder adhered to the roller surface of the lower roller 32 can be automatically scraped off by the scraper 543. In this way, the roller surface of the lower roller 32 can be automatically cleaned. The cleaning drive member 52 of the upper cleaning component 60 drives the scraper 543 of the upper cleaning component 60 to rotate, so that the second end of the scraper 543 can be pressed against the roller surface of the upper roller 33. When the upper roller 33 rotates, the second end of the scraper 543 continuously rubs against the roller surface of the upper roller 33, so that the scraper 543 can automatically scrape off the electrode powder adhered to the roller surface of the upper roller 33. In this way, the roller surface of the upper roller 33 can be cleaned. Compared with the existing technology, the production efficiency is improved and the production cost is reduced.

[0064] When the scraper 543 of the lower cleaning component 50 is worn and needs to be replaced, the waist-shaped holes 5422 of the first scraper clamp 541 and the second scraper clamp 542 and the clamping fasteners in the two clamping mounting holes 5512 can be removed first, and then the first scraper clamp 541, the second scraper clamp 542 and the scraper 543 can be removed from the clamping plate 551 as a whole, and then the mounting fasteners in the first mounting hole 5421 of the first scraper clamp 541 and the second scraper clamp 542 can be removed, and then the second scraper clamp 542 can be removed from the first scraper clamp 541, and then the scraper 543 can be removed. After that, the first end of the new scraper is clamped again between the second end of the first scraper clamp 541 and the second end of the second scraper clamp 542, and then the mounting fastener is installed in the first mounting hole and the corresponding second mounting hole 5421, and then the first end of the first scraper clamp 541 and the first end of the second scraper clamp 542 are matched with the clamping position 5511 of the clamping sheet 551 again, and the clamping fastener is reinstalled in the waist-shaped hole 5422 of the first scraper clamp 541 and the second scraper clamp 542 and the corresponding two clamping mounting holes 5512, so that the replacement of the scraper 543 of the lower cleaning assembly 50 is completed. The replacement steps of the scraper 543 of the upper cleaning assembly 60 are the same as those of the scraper 543 of the lower cleaning assembly 50, which will not be repeated here.

[0065] The guide plate 70 is located between the unwinding shaft 13 and the gap, and is combined with Figures 4 to 6As shown, the two ends of the guide plate 70 are respectively arranged on the inner sides of the two mounting frames 31a and 31b and the guide plate 70 partially protrudes from the front ends of the two mounting frames 31a and 31b. The guide plate 70 is arranged horizontally. The arranged guide plate 70 plays a guiding role, making it easy to insert the head end of the dry diaphragm into the gap and facilitate the threading.

[0066] One end of the guide plate 70 close to the unwinding shaft 13 is bent downward to form a bending portion 71. The angle between the bending portion 71 and the guide plate 70 is an obtuse angle. A chamfer is provided between the bending portion 71 and the top of the guide plate 70. The provided bending portion 71 can further play a guiding role, making it convenient to thread the belt. The provided chamfer will not scratch the dry-process diaphragm, thereby ensuring the quality of the finished diaphragm.

[0067] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A dry film thinning mechanism, comprising a roller assembly, the roller assembly comprising two mounting frames arranged opposite to each other, a lower roller and an upper roller, the two ends of the lower roller are rotatably mounted on the two lower bearing seats, the two lower bearing seats are respectively arranged in the two mounting frames, the upper roller and the lower roller are arranged opposite to each other up and down, there is a gap between the roller surface of the upper roller and the roller surface of the lower roller, the two ends of the upper roller are rotatably mounted on the two upper bearing seats, the two upper bearing seats are respectively arranged in the two mounting frames and are respectively located above the two lower bearing seats, characterized in that Also includes a lower cleaning assembly located on one side of the lower roller and an upper cleaning assembly located above the upper roller; The lower cleaning assembly and the upper cleaning assembly each include a first cleaning seat, a second cleaning seat, a cleaning drive, a cleaning shaft, and a scraper, the first cleaning seat and the second cleaning seat are arranged opposite to each other, the cleaning drive is arranged on the inner side of the first cleaning seat, the first end of the cleaning shaft is connected to the cleaning drive, and the second end of the cleaning shaft is rotatably arranged on the inner side of the second cleaning seat; In the lower cleaning assembly, the first cleaning seat is arranged on the inner side of one of the mounting frames, the second cleaning seat is arranged on one side of the support plate, the support plate is connected to one end of the other mounting frame, the cleaning shaft is arranged in parallel with the lower roller, the scraper is arranged obliquely relative to the lower roller, the first end of the scraper is connected to the cleaning shaft, the second end of the scraper is close to the roller surface of the lower roller, and the cleaning drive member is used to drive the cleaning shaft to rotate, thereby driving the scraper to rotate around the axis of the cleaning shaft, so that the second end of the scraper can be pressed against the roller surface of the lower roller or separated from the roller surface of the lower roller; In the upper cleaning assembly, the first cleaning seat is arranged at the top of one of the upper bearing seats, and the second cleaning seat is arranged at the top of the other upper bearing seat. The cleaning shaft is arranged in parallel with the upper roller, and the scraper is arranged at an angle relative to the upper roller. The first end of the scraper is connected to the cleaning shaft, and the second end of the scraper is close to the roller surface of the upper roller. The cleaning drive member is used to drive the cleaning shaft to rotate, thereby driving the scraper to rotate around the axis of the cleaning shaft, so that the second end of the scraper can be pressed against the roller surface of the upper roller or separated from the roller surface of the upper roller.

2. The dry film thinning mechanism according to claim 1, characterized in that: The lower cleaning assembly and the upper cleaning assembly both include a first scraper clamp and a second scraper clamp, the second scraper clamp is detachably connected to one side of the first scraper clamp, the first end of the second scraper clamp and the first end of the first scraper clamp are detachably connected to the cleaning shaft via a connecting member, and the first end of the scraper is clamped between the second end of the second scraper clamp and the second end of the first scraper clamp.

3. The dry film thinning mechanism according to claim 2, characterized in that: The connecting part includes a clamping plate and an expansion sleeve, the expansion sleeve is arranged on the outer periphery of the cleaning shaft, one end of the clamping plate is arranged on the outer periphery of the expansion sleeve, and the other end of the clamping plate has a clamping position, and the clamping position cooperates with the first ends of the first scraper clamping member and the second scraper clamping member, two clamping mounting holes are arranged on both sides of the other end of the clamping plate, the two clamping mounting holes are connected with the clamping position, the first scraper clamping member and the second scraper clamping member are provided with waist-shaped holes corresponding to the two clamping mounting holes, and clamping fasteners are installed in the waist-shaped holes and the corresponding two clamping mounting holes.

4. The dry film thinning mechanism according to claim 1, characterized in that: The lower cleaning assembly and the upper cleaning assembly both include a cleaning support seat, which is connected to the cleaning drive member and has a through hole. The cleaning support seat is sleeved on the outer circumference of the cleaning shaft through the through hole. A cleaning bearing is provided in the through hole, and the cleaning bearing is sleeved on the outer circumference of the cleaning shaft.

5. The dry film thinning mechanism according to claim 1, characterized in that: The two upper bearing seats are respectively slidably arranged in the two mounting frames, and the rolling roller assembly also includes two pressure-applying driving members arranged opposite to each other, and the two pressure-applying driving members are respectively arranged at the top ends of the two mounting frames, and the top ends of the mounting frames are provided with through holes connected to the interior of the mounting frames, and the ends of the output shafts of the two pressure-applying driving members respectively pass through the through holes of the two mounting frames and are respectively located in the two mounting frames, and the ends of the output shafts of the two pressure-applying driving members are respectively connected to two pressure blocks, and the top ends of the two upper bearing seats are respectively provided with two mounting members, and the first cleaning seat and the second cleaning seat are respectively arranged at the top ends of the two mounting members, and the two pressure blocks are respectively located above the two mounting members and the two pressure blocks are respectively connected to the two mounting members through two pressure sensors, and the first cleaning seat and the second cleaning seat are located between the two pressure blocks.

6. The dry film thinning mechanism according to claim 1, characterized in that: Two lower mounting shafts are respectively formed at both ends of the lower rolling roller, and the two lower mounting shafts correspond to the two lower bearing seats respectively, and the lower bearing seat is provided with a lower mounting hole, and the lower mounting shaft passes through the lower mounting holes of the corresponding lower bearing seats, and the lower mounting holes are sequentially provided with a first lower bearing and a second lower bearing in the direction away from the center of the lower rolling roller, and the first lower bearing and the second lower bearing are both sleeved on the outer circumference of the corresponding lower mounting shaft, and the first lower bearing cover and the second lower bearing cover are respectively installed on the inner and outer sides of the lower bearing seat, and the first lower bearing cover and the second lower bearing cover are both sleeved on the outer circumference of the corresponding lower mounting shaft, and the first lower bearing cover and the second lower bearing cover are respectively abutted against the first lower bearing and the second lower bearing, and the lower mounting shaft is threadedly connected with a lower locking nut, and the lower locking nut abuts against the side of the corresponding second lower bearing cover away from the lower bearing seat.

7. The dry film thinning mechanism according to claim 6, characterized in that: Two upper mounting shafts are respectively formed at both ends of the upper rolling roller, and the two upper mounting shafts correspond to the two upper bearing seats respectively. The upper bearing seat is provided with an upper mounting hole, and the upper mounting shaft passes through the upper mounting holes of the corresponding upper bearing seats. The upper mounting holes are sequentially provided with a first upper bearing and a second upper bearing in the direction away from the center of the upper rolling roller. The first upper bearing and the second upper bearing are both sleeved on the outer circumference of the corresponding upper mounting shaft, and the first upper bearing cover and the second upper bearing cover are respectively installed on the inner and outer sides of the upper bearing seat. The first upper bearing cover and the second upper bearing cover are both sleeved on the outer circumference of the corresponding upper mounting shaft, and the first upper bearing cover and the second upper bearing cover are respectively abutted against the first upper bearing and the second upper bearing, and the upper mounting shaft is threadedly connected with an upper locking nut, and the upper locking nut abuts against the side of the corresponding second upper bearing cover away from the upper bearing seat.

8. The dry film thinning mechanism according to claim 7, characterized in that: The first lower bearing and the first upper bearing are both cylindrical roller bearings, and the second lower bearing and the second upper bearing are both angular contact bearings.

9. The dry film thinning mechanism according to claim 7, characterized in that: The roller assembly further comprises a lower roller driving member and an upper roller driving member, wherein the lower roller driving member is arranged on the outer side of one of the lower bearing seats, and the upper roller driving member is arranged on the outer side of one of the upper bearing seats; One end of one of the two lower mounting shafts, which is away from the center of the lower roller, is connected to the lower roller driving member, and the lower roller driving member is used to drive the lower roller to rotate through the lower mounting shaft connected thereto; One end of one of the two upper mounting shafts, which is away from the center of the upper roller, is connected to the upper roller driving member, and the upper roller driving member is used to drive the upper roller to rotate through the upper mounting shaft connected thereto.

10. The dry film thinning mechanism according to claim 1, characterized in that: It also includes an unwinding assembly, which includes an unwinding shaft, which corresponds to the lower roller, one end of which passes through a support plate mounting hole on one side of the support plate and is connected to a magnetic powder brake or is connected to an unwinding drive member through a magnetic powder clutch, and the unwinding shaft can rotate relative to the support plate.

11. The dry film thinning mechanism according to claim 10, characterized in that: It also includes a guide plate located between the unwinding shaft and the gap, the two ends of the guide plate are respectively arranged on the inner sides of the two mounting frames and the guide plate part protrudes from one end of the two mounting frames, and the guide plate is arranged horizontally.

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