Scraper device of coating machine

Abstract

The utility model discloses a coating machine scraper device which comprises base plates oppositely arranged on two sides of a membrane material, a scraper mounting plate and a scraper, the scraper mounting plate is rotatably connected to the base plates through a rotating shaft, and the scraper is fixedly mounted at the lower end of the scraper mounting plate. And a spring for enabling the scraper to have a trend of moving towards one side of the membrane material and a threaded rod for adjusting the distance between the scraper and the membrane material are arranged between the base plate and the scraper mounting plate. By arranging the threaded rod and the spring, the distance between the scraper and the membrane material can be adjusted, so that the thickness of the coating on the membrane material is adjusted, and the consistency of the coating thickness is ensured.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm coating technology, specifically to a coating machine scraper device. Background Technology

[0002] The separator is an inner component of a lithium-ion battery, and it is one of the key components in the battery's structure. The main function of the separator is to separate the positive and negative electrodes, preventing them from contacting and short-circuiting. Because the separator itself has poor heat resistance and no adhesive properties to the positive and negative electrodes, current technology often involves coating the separator surface with one or two inorganic heat-resistant layers, such as alumina or boehmite, followed by an organic adhesive layer, such as PVDF or PMMA.

[0003] In existing technologies, dip coating is commonly used to coat diaphragms. During production, it is usually necessary to scrape off excess slurry from the membrane material with a doctor blade to make the surface of the slurry adhering to the membrane material smooth. However, existing doctor blades are usually fixed and cannot adjust the distance between the doctor blade and the membrane material according to production needs, thereby adjusting the coating thickness. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a coating machine scraper device that can adjust the distance between the scraper and the film material as needed, ensuring consistent coating thickness, improving production quality, and reducing production costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A coating machine scraper device includes a substrate, a scraper mounting plate, and a scraper disposed opposite to both sides of a film material. The scraper mounting plate is rotatably connected to the substrate via a rotating shaft. The scraper is fixedly mounted on the lower end of the scraper mounting plate. A spring that tends to move the scraper toward one side of the film material and a threaded rod that adjusts the distance between the scraper and the film material are provided between the substrate and the scraper mounting plate.

[0007] Preferably, the spring is located above the threaded rod, which is situated between the spring and the shaft.

[0008] Preferably, one end of the threaded rod is fixedly mounted on the substrate, the scraper mounting plate is provided with a through hole for the threaded rod to pass through, and the other end of the threaded rod passes through the through hole and is threadedly connected to the knob, the knob abutting against the surface of the scraper mounting plate away from the substrate.

[0009] Preferably, the substrate has a screw hole that matches the threaded rod, the scraper mounting plate has a through hole for the threaded rod to pass through, one threaded end of the threaded rod passes through the through hole and is screwed into the screw hole of the substrate, and the head of the threaded rod abuts against the surface of the scraper mounting plate away from the substrate.

[0010] Preferably, the scraper mounting plate includes a first mounting part and a second mounting part. The second mounting part has a scraper fixing plate on the side away from the film material. The scraper is installed between the second mounting part and the scraper fixing plate. The second mounting part has a mounting hole. The scraper and the scraper fixing plate both have through holes corresponding to the mounting holes on the second mounting part. The scraper and the scraper fixing plate are fixedly installed on the second mounting part by fastening bolts.

[0011] Preferably, the scraper fixing plate, the scraper, and the second mounting part are arranged parallel to each other, and during assembly, the lower end of the scraper extends from below the scraper fixing plate and the second mounting part.

[0012] Preferably, the rotating shaft includes an outer sleeve and a shaft core. The shaft core is rotatably disposed inside the outer sleeve. The outer sleeve is fixedly installed on the bottom of the substrate. The shaft core extends from both ends of the outer sleeve and is connected to the scraper mounting plate.

[0013] Preferably, the first mounting part is provided with connectors on both the front and rear sides, and the side of the connector away from the scraper mounting plate is connected to the shaft core.

[0014] Preferably, an obtuse angle structure with an opening facing the membrane material is formed between the first mounting part and the second mounting part, and the second mounting part is inclined from top to bottom towards the membrane material.

[0015] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, by setting a threaded rod and a spring, the distance between the scraper and the film material can be adjusted, thereby adjusting the thickness of the coating on the film material and ensuring the consistency of the coating thickness.

[0016] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments: Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 This is an exploded structural diagram of an embodiment of the present utility model;

[0019] Figure 3 This is an exploded view of the scraper mounting structure according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached diagram:

[0021] 10. Scraper adjustment assembly; 11. Substrate; 12. Film material; 20. Scraper mounting plate; 21. First mounting part; 22. Second mounting part; 23. Threaded rod; 24. Knob; 25. Spring; 30. Scraper fixing plate; 31. Scraper; 32. Fastening bolt; 40. Outer sleeve; 41. Shaft core; 42. Connecting piece. Detailed Implementation

[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Please refer to Figure 1-3 As shown, a coating machine scraper 31 device includes a substrate 11, a scraper mounting plate 20, and a scraper 31, which are disposed opposite each other on both sides of a film material 12. The scraper mounting plate 20 is rotatably connected to the substrate 11 via a rotating shaft. The scraper 31 is fixedly mounted on the lower end of the scraper mounting plate 20. A spring 25 is provided between the substrate 11 and the scraper mounting plate 20 to cause the scraper 31 to move towards the film material 12, and a threaded rod 23 is provided to adjust the distance between the scraper 31 and the film material 12. The spring 25 is disposed above the threaded rod 23, and the threaded rod 23 is located between the spring 25 and the rotating shaft. By setting the threaded rod 23 and the spring 25, this utility model can adjust the distance between the scraper 31 and the film material 12, thereby adjusting the thickness of the coating on the film material 12 and ensuring the consistency of the coating thickness.

[0025] Specifically, the scraper mounting plate 20 includes a first mounting part 21 and a second mounting part 22. The second mounting part 22 is provided with a scraper 31 fixing plate 30 on the side away from the membrane material 12. The scraper 31 is installed between the second mounting part 22 and the scraper 31 fixing plate 30. The second mounting part 22 is provided with mounting holes. Both the scraper 31 and the scraper 31 fixing plate 30 are provided with through holes corresponding to the mounting holes on the second mounting part 22. The scraper 31 and the scraper 31 fixing plate 30 are fixedly installed on the second mounting part 22 by fastening bolts 32. An obtuse angle structure is formed between the first mounting part 21 and the second mounting part 22 with the opening facing the membrane material 12. The second mounting part 22 is inclined from top to bottom towards the membrane material 12.

[0026] More specifically, the scraper 31 fixing plate 30, the scraper 31, and the second mounting part 22 are arranged in parallel to each other. During assembly, the lower end of the scraper 31 extends from below the scraper 31 fixing plate 30 and the second mounting part 22.

[0027] Specifically, the rotating shaft includes an outer sleeve 40 and a shaft core 41. The shaft core 41 is rotatably disposed inside the outer sleeve 40. The outer sleeve 40 is fixedly installed on the bottom of the base plate 11. The shaft core 41 extends from both ends of the outer sleeve 40 and is connected to the scraper mounting plate 20. The first mounting part 21 is provided with connecting members 42 on both the front and rear sides. The side of the connecting member 42 away from the scraper mounting plate 20 is connected to the shaft core 41.

[0028] Specifically, the substrate 11 has a threaded hole that matches the threaded rod 23, and the scraper mounting plate 20 has a through hole through which the threaded rod 23 passes. One threaded end of the threaded rod 23 passes through the through hole on the scraper mounting plate 20 and is screwed into the threaded hole of the substrate 11. The head of the threaded rod 23 abuts against the surface of the scraper mounting plate 20 away from the substrate 11. In use, by rotating the head of the threaded rod 23, the first mounting part 21 is brought closer to the substrate 11. At this time, the second mounting part 22 rotates around the axis away from the film material 12, thereby driving the lower end of the scraper 31 away from the film material 12. The spring 25 keeps the upper end of the first mounting part 21 always tending to move away from the substrate 11, thereby maintaining the distance between the scraper 31 and the film material 12.

[0029] It should be noted that the threaded rod 23 can also adjust the scraper mounting plate 20 via a knob 24. More specifically, one end of the threaded rod 23 is fixedly mounted on the substrate 11. The scraper mounting plate 20 has a through hole for the threaded rod 23 to pass through. The threaded rod 23 is provided with a knob 24, which has a screw hole that matches the threaded rod 23. The other end of the threaded rod 23 passes through the through hole of the scraper mounting plate 20 and connects to the screw hole of the knob 24. The knob 24 abuts against the surface of the scraper mounting plate 20 away from the substrate 11. In use, rotating the knob 24 brings the first mounting part 21 closer to the substrate 11. At this time, the second mounting part 22 rotates around the axis away from the film material 12, thereby driving the lower end of the scraper 31 away from the film material 12. The spring 25 keeps the upper end of the first mounting part 21 always tending to move away from the substrate 11, thereby maintaining the distance between the scraper 31 and the film material 12.

[0030] In summary, by incorporating a threaded rod and a spring, this invention allows for adjustment of the distance between the scraper and the film material, thereby regulating the thickness of the coating on the film material and ensuring consistent coating thickness.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the actual technical aspects of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A coater doctor blade apparatus comprising a base plate, a doctor blade mounting plate and a doctor blade, oppositely disposed on both sides of a film material, characterized in that, The scraper mounting plate is rotatably connected to the base plate through a rotating shaft, the scraper is fixedly mounted at the lower end of the scraper mounting plate, and the base plate and the scraper mounting plate are provided with a spring for enabling the scraper to move towards the film material side and a threaded rod for adjusting the distance between the scraper and the film material.

2. The coater doctor blade apparatus of claim 1, wherein, The spring is arranged above the threaded rod, and the threaded rod is located between the spring and the rotating shaft.

3. The coater doctor blade apparatus of claim 1, wherein, One end of the threaded rod is fixedly mounted on the base plate, the scraper mounting plate is provided with a through hole through which the threaded rod passes, the other end of the threaded rod passes through the through hole and is threadedly connected to a knob, and the knob abuts against the surface of the side of the scraper mounting plate away from the base plate.

4. The coater doctor blade apparatus of claim 1, wherein, The base plate is provided with a screw hole matched with the threaded rod, the scraper mounting plate is provided with a through hole through which the threaded rod passes, a threaded end of the threaded rod passes through the through hole and is screwed into the screw hole of the base plate, and the head of the threaded rod abuts against the surface of the side of the scraper mounting plate away from the base plate.

5. The coater doctor blade apparatus of claim 1, wherein, The scraper mounting plate comprises a first mounting part and a second mounting part, the second mounting part is provided with a scraper fixing plate away from the film material side, the scraper is mounted between the second mounting part and the scraper fixing plate, the second mounting part is provided with a mounting hole, the scraper and the scraper fixing plate are both provided with through holes corresponding to the mounting hole on the second mounting part, and the scraper and the scraper fixing plate are fixedly mounted on the second mounting part through fastening bolts.

6. The coater doctor blade apparatus of claim 5, wherein, The scraper fixing plate, the scraper and the second mounting part are arranged in parallel with each other, and the lower end of the scraper extends out from below the scraper fixing plate and the second mounting part during assembly.

7. The coater doctor blade apparatus of claim 1, wherein, The rotating shaft comprises an outer sleeve and a shaft core, the shaft core is rotatably arranged in the outer sleeve, the outer sleeve is fixedly mounted at the bottom of the base plate, and the shaft core extends out from both ends of the outer sleeve and is connected to the scraper mounting plate.

8. The coater doctor blade apparatus of claim 5, wherein, The first mounting part is provided with connecting pieces on both sides thereof, and the connecting pieces are connected to the shaft core away from the scraper mounting plate.

9. The coater doctor blade apparatus of claim 5, wherein, An obtuse angle structure is formed between the first mounting part and the second mounting part, the opening of the obtuse angle structure faces the film material side, and the second mounting part is arranged to be inclined downward towards the film material side.

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