Cartridge device with variable coating width

Abstract

This invention discloses a coating box device with arbitrarily adjustable coating width, comprising: a slurry box and a slide rail. The slide rail is fixedly installed inside the slurry box and its length direction is parallel to the length direction of the slurry box. At least one slider is connected to the slide rail. A second strip-shaped opening is formed on the left side of the slurry box. A liquid inlet pipe is fixedly installed on each slider. The left end of the liquid inlet pipe is connected to the slurry through a pipe, and the right end of the liquid inlet pipe passes through the second strip-shaped opening. One or more sealing elements are provided in the space between the surface of the anilox roller inside the slurry box and the left side of the slurry box. The sealing elements are not opposite to any of the liquid inlet pipes and are used to seal the slurry in the slurry box located on one side of the sealing element. The coating box device of this invention simplifies coating operations such as blank ends, blank middle, and zebra stripes on diaphragms. Using the coating box device of this invention for spot coating, it is no longer necessary to customize rollers of different widths to coat base films of different widths, saving rollers and reducing costs.

Description

Technical Field

[0001] This invention belongs to the field of coating box technology, and specifically relates to a coating box device that can arbitrarily change the coating width. Background Technology

[0002] A coating container is a device commonly used in industries such as papermaking, printing, and diaphragm manufacturing. It provides a stable and adjustable flow rate for coating operations. Its working principle involves pumping the coating solution from a mixing device into the container. The flow rate can be adjusted by regulating the pump speed. Due to different coating methods, coating containers can be configured with various combinations of top-inlet, bottom-inlet, top-outlet, and bottom-outlet designs. To ensure uniform solution distribution within the container and prevent surface fluctuations that could lead to uneven coating or missed areas, most coating containers employ a structure with multiple evenly distributed inlet pipes.

[0003] Currently, most coating kits use a fixed width, meaning the width is customized as needed. Taking the lithium battery separator industry as an example: the two main coating methods in China are roller coating and spray coating. Since a fixed width coating kit doesn't significantly affect the overall coating effect under these two methods, the kits haven't undergone major modifications. However, with the improvement of product requirements and coating methods, fixed-width kits are increasingly unable to meet the demands. For example, some products now require blank ends, a blank middle, or a zebra stripe pattern; there are also new separator coating methods like dot coating. Due to the unique nature of dot coating, compared to traditional roller coating, a printing roller is added after the anilox roller. The anilox roller's function changes from coating to transferring the slurry. Since the printing roller cannot allow the emulsion coating head containing slurry to directly contact the back roller during coating operations, currently only a base film width greater than the printing roller width can be used. If it's necessary to save base film and change the base film width according to the product, then printing rollers of different widths must be customized. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a material box device with an arbitrarily adjustable coating width, which can coat base films of different widths.

[0005] The objective of this invention is achieved through the following technical solution.

[0006] A coating box device with arbitrarily adjustable coating width includes: a slurry box and a slide rail. The right side of the slurry box has a recessed structure that serves as a material hopper. An anilox roller is horizontally positioned with its axial direction parallel to the length direction of the slurry box. The left part of the anilox roller is located inside the material hopper and is used to contact the slurry inside the hopper. An upper scraper is fixedly mounted outside the slurry box above the anilox roller, and a lower scraper is fixedly mounted outside the slurry box below the anilox roller. The upper and lower scrapers are used to scrape off the slurry outside the ink holes on the anilox roller. The length direction of the slide rail is parallel to the length direction of the slurry box. The slide rail is fixedly mounted... Inside the slurry box, at least one slider is connected to the slide rail. A second strip-shaped opening is formed on the left side of the hopper, the length direction of which is parallel to the length direction of the slurry box. An inlet pipe is fixedly mounted on each slider. The left end of the inlet pipe is connected to the slurry through a pipe, and the right end of the inlet pipe passes through the second strip-shaped opening to feed slurry into the hopper. One or more sealing elements are provided in the space between the surface of the anilox roller inside the hopper and the left side of the hopper. The sealing elements are not opposite to any of the inlet pipes and are used to seal the slurry in the hopper located on one side of the sealing element.

[0007] In the above technical solution, the top end of the liquid inlet pipe contacts the upper edge of the second strip opening, and a gap is formed between the bottom end of the liquid inlet pipe and the lower edge of the second strip opening, so that excess slurry in the silo overflows from the gap into the slurry box.

[0008] In the above technical solution, a baffle is fixedly installed in the slurry box on the right side of the slide rail. The bottom end of the baffle is fixedly installed to the inner wall of the bottom surface of the slurry box, and the top end of the baffle is close to the bottom end of the liquid inlet pipe, so that the slurry overflowing from the gap is sealed on the right side of the baffle.

[0009] In the above technical solution, a drain outlet is formed on the bottom surface of the slurry box to the right of the baffle.

[0010] In the above technical solution, a first strip-shaped opening is formed on the left side of the slurry box. The length direction of the first strip-shaped opening is parallel to the length direction of the slurry box. A handle is fixedly installed on the left side of the slider. The handle extends from the first strip-shaped opening to the outside of the slurry box.

[0011] In the above technical solution, the sealing element includes an arc-shaped portion that fills the space between the surface of the anilox roller inside the hopper and the left side of the hopper.

[0012] In the above technical solution, the sealing element further includes an upper connecting part and a lower connecting part. The upper connecting part is fixedly installed on the upper part of the arc-shaped part, and the lower connecting part is fixedly installed on the lower part of the arc-shaped part. Both the upper connecting part and the lower connecting part are used to be fixedly installed with the slurry box.

[0013] The material box device of the present invention simplifies coating operations such as leaving blanks at both ends of the diaphragm, leaving blanks in the middle, and creating zebra stripes. When using the material box device of the present invention for spot coating, it is no longer necessary to customize rollers of different widths to coat base films of different widths, saving rollers and reducing costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram illustrating the usage process of the material box device of the present invention;

[0015] Figure 2 This is a cross-sectional view of the material box device of the present invention (showing the anilox roller);

[0016] Figure 3 for Figure 2 The left view;

[0017] Figure 4 This is a cross-sectional view of the coating box device of the present invention, which allows for arbitrary changes in coating width (seal not shown, anilox roller shown);

[0018] Figure 5 This is a cross-sectional view of the coating box device of the present invention, which allows for arbitrary changes in coating width (the seal is not shown).

[0019] Figure 6 Left view of the hopper assembly (gap and baffle not shown);

[0020] Figure 7 This refers to the material box device in Example 5;

[0021] Figure 8 This refers to the material box device in Example 6;

[0022] Figure 9 This is a partial enlarged view of the material box device.

[0023] Among them, 1: material box device, 1-1: drain port, 1-2: second strip opening, 1-3: baffle, 1-4: slurry box, 1-5: lower slide rail, 1-6: slider, 1-7: handle, 1-8: upper slide rail, 1-9: liquid inlet pipe, 1-10: upper scraper, 1-11: seal, 1-11-1: upper connecting part, 1-11-2: arc-shaped part, 1-12: material bin, 1-13: lower scraper, 1-14: first strip opening, 1-15: bolt hole, 2: anilox roller, 3: printing roller, 4: base film. Detailed Implementation

[0024] The technical solution of the present invention will be further described below with reference to specific embodiments.

[0025] Example 1

[0026] like Figures 1-6 As shown, a material box device 1 with arbitrarily adjustable coating width includes: a slurry box 1-4 and a slide rail. A recessed structure is formed on the right side of the slurry box 1-4, and the recessed area is a material hopper 1-12. An anilox roller 2 is horizontally arranged, and the axial direction of the anilox roller 2 is parallel to the length direction of the slurry box 1-4 (the length direction of the slurry box 1-4 is perpendicular to the horizontal axis). Figure 1 (in the direction of the plane), the left part of the anilox roller 2 is located inside the hopper 1-12 and is used to contact the slurry inside the hopper 1-12; an upper scraper 1-10 is fixedly installed outside the slurry box 1-4 above the anilox roller 2, and a lower scraper 1-13 is fixedly installed outside the slurry box 1-4 below the anilox roller 2. The upper scraper 1-10 and the lower scraper 1-13 are used to scrape off the slurry outside the ink holes on the anilox roller 2. The length direction of the slide rail is parallel to the length direction of the slurry box 1-4, and the slide rail is fixed inside the slurry box 1-4. For example, the two ends of the slide rail are fixed to the inner wall of the slurry box. At least one slider 1-6 is connected to the slide rail. A first strip opening 1-14 is formed on the left side of the slurry box 1-4. The length direction of the first strip opening 1-14 is parallel to the length direction of the slurry box 1-4. A second strip opening 1-2 is formed on the left side of the hopper 1-12 (i.e., the side of the hopper 1-12 near the slider). The length direction of the second strip opening 1-2 is parallel to the length direction of the first strip opening 1-14. A liquid inlet pipe 1-9 is fixed on each slider 1-6. The liquid inlet pipe 1-9 can be embedded in the slider or fixed on the surface of the slider, as long as the liquid inlet pipe 1-9 can be fixed to the slider. The left end of the inlet pipe 1-9 is connected to the slurry outside the slurry box 1-4 through a pipe (the pipe passes through the first strip opening 1-14, the pipe is not shown in the figure). The right end of the inlet pipe 1-9 passes through the second strip opening 1-2 and is used to input slurry into the silo 1-12. A pump and a valve that controls whether the inlet pipe 1-9 inputs slurry into the silo 1-12 can be installed on the pipe. Each inlet pipe 1-9 can be controlled individually.

[0027] One or more sealing elements 1-11 are provided in the space between the arc-shaped surface of the anilox roller 2 located in the hopper 1-12 and the left side of the hopper 1-12. The sealing element 1-11 is not opposite to any of the liquid inlet pipes 1-9. The sealing element 1-11 is used to block the slurry in the hopper 1-12 located on the side of the sealing element 1-11.

[0028] The material box device of this invention allows for the arbitrary setting of coating areas on the base film and the determination of the coating width of each area. When there are several coating areas on the base film, the width of each coating area can be set independently. This is achieved by setting a sealing element 1-11 at the position of the material bin 1-12 corresponding to the edge of the coating area on the base film, and then setting an appropriate number of liquid inlet pipes 1-9 within the range of the material bin 1-12 corresponding to the coating area. For example, for roller coating, it is not limited to the whole coating process and the coating area can be set arbitrarily. For spot coating, because spot coating is designed to prevent liquid from being directly applied to the back roller by the printing roller and thus contaminating the diaphragm, the currently used spot coating process can only use a substrate with a width larger than the printing roller for coating. This invention can solve this problem well and save the need to customize printing rollers of different widths due to width issues.

[0029] The working process of the above-mentioned material box device is as follows: Figure 1 As shown, the inlet pipe 1-9 feeds slurry into the hopper 1-12, causing the anilox roller 2 and the printing roller 3 to rotate. The slurry in the hopper 1-12 of the material box device 1 is transferred to the anilox roller 2, which then transfers the slurry to the printing roller 3, which coats the slurry onto the base film 4. Taking one coating area as an example, a sealing element 1-11 is respectively set at the position corresponding to the hopper of the slurry box 1-4 at the two edges of the coating area of ​​the base film 4. One or more inlet pipes 1-9 are set in the coating area within the range corresponding to the hopper of the slurry box 1-4. The number of inlet pipes 1-9 is related to the width of the coating area. The wider the coating area, the more inlet pipes 1-9 are required, and the narrower the coating area, the fewer inlet pipes 1-9 are required.

[0030] The number of inlet pipes 1-9 can be adjusted by installing a slider on the slide rail, and the position of inlet pipes 1-9 on the hopper can also be adjusted by sliding the slider on the slide rail. When the slider moves on the slide rail, inlet pipes 1-9 slide along the length of the second strip opening 1-2.

[0031] Example 2

[0032] Based on Example 1, the top end of the inlet pipe 1-9 contacts the upper edge of the second strip opening 1-2. The degree of contact is required to "not obstruct the sliding of the inlet pipe 1-9 along the length direction of the second strip opening 1-2" and "prevent the slurry from overflowing between the top end of the inlet pipe 1-9 and the upper edge of the second strip opening 1-2". For example, a rubber strip can be installed on the upper edge of the second strip opening 1-2. When a certain force is applied to the slider, it does not obstruct the sliding of the inlet pipe 1-9 along the length direction of the second strip opening 1-2 and can play a certain sealing role.

[0033] A gap is formed between the bottom end of the liquid inlet pipe 1-9 and the lower edge of the second strip opening 1-2, so that excess slurry in the hopper 1-12 overflows from the gap into the slurry box 1-4.

[0034] A baffle 1-3 is fixedly installed inside the slurry box 1-4 on the right side of the slide rail. The bottom end of the baffle 1-3 is fixed to the inner wall of the bottom surface of the slurry box 1-4 (the edge of the baffle 1-3 along the vertical direction is seamlessly connected to the inner wall of the slurry box 1-4). The top end of the baffle 1-3 is close to the bottom end of the liquid inlet pipe 1-9 so that the slurry overflowing from the gap is sealed to the right of the baffle 1-3. A drain port 1-1 is formed on the bottom surface of the slurry box 1-4 to the right of the baffle 1-3.

[0035] As a further explanation, the top of the baffle 1-3 is close to the bottom of the inlet pipe 1-9: the top of the baffle 1-3 can abut against the bottom of the inlet pipe 1-9, or there can be some gaps. When the top of the baffle 1-3 abuts against the bottom of the inlet pipe 1-9, the baffle 1-3 can support the inlet pipe 1-9. Preferably, a rubber strip can also be installed on the top of the baffle 1-3 to prevent slurry from contaminating the slide rail (when a certain force is applied to the slider, it does not hinder the inlet pipe 1-9 from sliding along the length of the second strip opening 1-2).

[0036] The slide rail includes an upper slide rail 1-8 and a lower slide rail 1-5. A slider 1-6 is located between the upper slide rail 1-8 and the lower slide rail 1-5, and the slider 1-6 is slidably connected to the upper slide rail 1-8 and the lower slide rail 1-5 respectively.

[0037] Example 3

[0038] To facilitate the movement of the slider to adjust the coating area, based on Example 2, a handle 1-7 is fixedly installed on the left side of the slider 1-6. The left end of the handle 1-7 extends from the first strip opening 1-14 to the outside of the slurry box 1-4, making it convenient for the user to apply force to the slider.

[0039] Example 4

[0040] Based on Embodiment 1, Embodiment 2, or Embodiment 3, the sealing element 1-11 includes an arc-shaped portion 1-11-2, which fills the space between the arc-shaped surface of the anilox roller 2 located inside the hopper 1-12 and the left side of the hopper 1-12. The right side shape of the arc-shaped portion conforms to the arc-shaped surface of the anilox roller 2 it is close to. The width of the arc-shaped portion can be set very thin, as long as it can effectively seal the slurry located on one side of the sealing element 1-11 in the hopper 1-12.

[0041] The seal 1-11 further includes an upper connecting part 1-11-1 and a lower connecting part. The upper connecting part is fixedly mounted on the upper part of the arc-shaped part, and the lower connecting part is fixedly mounted on the lower part of the arc-shaped part. Both the upper and lower connecting parts are used for fixing to the slurry box 1-4. The upper and lower connecting parts can be fixed to the slurry box 1-4 in various ways, for example: Figure 9 As shown, the upper and lower connecting parts can be designed as metal sheets. A row of spaced bolt holes 1-15 are respectively provided on the slurry box 1-4 above the silo 1-12 and the slurry box 1-4 below the silo 1-12 along the length of the slurry box 1-4. When it is necessary to fix the upper and lower connecting parts to the slurry box 1-4 respectively, the upper connecting part can be placed between the upper scraper 1-10 and the slurry box 1-4 and fixed through the corresponding bolt holes, and the lower connecting part can be placed between the lower scraper 1-13 and the slurry box 1-4 and fixed through the corresponding bolt holes.

[0042] Example 5

[0043] The roller-coated sample with a blank space in the middle was made using the material box device in Example 1. The requirements for the diaphragm after coating are: diaphragm width 1000mm, blank space of 10mm on each side of the diaphragm, blank space of 60mm in the middle, and coating length 3000m.

[0044] Coating method: Select a base film with a thickness of 12μm and a width of 1000mm, and coat it with a thickness of 2μm.

[0045] like Figure 7 As shown, the material box device consists of: slurry boxes 1-4 with a length of 1000mm; four seals; four inlet pipes 1-9; and four sliders. The four seals, from closest to farthest from the edge of the diaphragm on the same side, are: first seal, second seal, third seal, and fourth seal. The distances of the first, second, third, and fourth seals from the edge of the diaphragm on the same side are 10mm, 470mm, 530mm, and 990mm, respectively. Two sliders are provided between the first and second seals, and two sliders are provided between the third and fourth seals. (The width of seals 1-11 is negligible. If the width of seals 1-11 needs to be calculated, it should be included in the blank space of the base film.)

[0046] Example 6

[0047] The zebra stripe sample was made using the material box device in Example 1. The requirements for the diaphragm after coating are as follows: the diaphragm width is 1100mm, there is a 50mm blank on each side of the diaphragm, and 5 intervals are set between the two blanks to set the coating area. Each coating area is 100mm wide, the interval between two adjacent coating areas is 100mm, and the coating length is 3000m.

[0048] Coating method: Select a base film with a thickness of 12μm and a width of 1100mm, and coat it with a thickness of 2μm.

[0049] like Figure 8 As shown, the material box device consists of: slurry boxes 1-4 with a length of 1100mm; ten seals; five inlet pipes 1-9; and five sliders. The ten seals, from closest to farthest from the edge of the diaphragm on the same side, are: first seal, second seal, ..., ninth seal and tenth seal. The distances from the first to tenth seals to the edge of the diaphragm on the same side are: 50mm, 150mm, 250mm, 350mm, 450mm, 550mm, 650mm, 750mm, 850mm, and 950mm, respectively. A slider is provided between the first and second seals, between the third and fourth seals, between the fifth and sixth seals, between the seventh and eighth seals, and between the ninth and tenth seals. (The width of seals 1-11 is negligible. If the width of seals 1-11 needs to be calculated, it should be included in the interval between adjacent coating areas.)

[0050] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "horizontal," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" 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, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. A material box device with an arbitrarily adjustable coating width, characterized in that, include: The slurry box (1-4) and slide rail are provided. A recessed structure is formed on the right side of the slurry box (1-4), and the recessed area serves as a hopper (1-12). An anilox roller (2) is horizontally positioned, with its axial direction parallel to the length of the slurry box (1-4). The left side of the anilox roller (2) is located within the hopper (1-12) and is used to contact the slurry within the hopper (1-12). The upper part of the anilox roller (2)... An upper scraper (1-10) is fixedly mounted on the outside of the square slurry box (1-4), and a lower scraper (1-13) is fixedly mounted on the outside of the slurry box (1-4) below the anilox roller (2). The upper scraper (1-10) and the lower scraper (1-13) are used to scrape off the slurry outside the ink holes on the anilox roller (2). The length direction of the slide rail is parallel to the length direction of the slurry box (1-4), and the slide rail is fixedly mounted inside the slurry box (1-4). At least one slider (1-6) is connected to the hopper (1-12), and a second strip-shaped opening (1-2) is formed on the left side of the hopper (1-12). The length direction of the second strip-shaped opening (1-2) is parallel to the length direction of the slurry box (1-4). An inlet pipe (1-9) is fixed on each slider (1-6). The left end of the inlet pipe (1-9) is connected to the slurry through a pipe, and the right end of the inlet pipe (1-9) passes through the second strip-shaped opening (1-2) to input slurry into the hopper (1-12). One or more sealing elements (1-11) are provided in the space between the surface of the anilox roller (2) in the hopper (1-12) and the left side of the hopper (1-12). The sealing element (1-11) is not opposite to any one of the inlet pipes (1-9). The sealing element (1-11) is used to block the slurry in the hopper (1-12) located on one side of the sealing element (1-11).

2. The material box device according to claim 1, characterized in that, The top end of the liquid inlet pipe (1-9) contacts the upper edge of the second strip opening (1-2), and a gap is formed between the bottom end of the liquid inlet pipe (1-9) and the lower edge of the second strip opening (1-2) so that excess slurry in the silo (1-12) overflows from the gap into the slurry box (1-4).

3. The material box device according to claim 2, characterized in that, A baffle (1-3) is fixedly installed inside the slurry box (1-4) on the right side of the slide rail. The bottom end of the baffle (1-3) is fixed to the inner wall of the bottom surface of the slurry box (1-4), and the top end of the baffle (1-3) is close to the bottom end of the liquid inlet pipe (1-9) so that the slurry overflowing from the gap is sealed to the right of the baffle (1-3).

4. The material box device according to claim 3, characterized in that, A drain outlet (1-1) is formed on the bottom surface of the slurry box (1-4) to the right of the baffle (1-3).

5. The material box device according to claim 4, characterized in that, A first strip-shaped opening (1-14) is formed on the left side of the slurry box (1-4). The length direction of the first strip-shaped opening (1-14) is parallel to the length direction of the slurry box (1-4). A handle (1-7) is fixedly installed on the left side of the slider (1-6). The handle (1-7) extends from the first strip-shaped opening (1-14) to the outside of the slurry box (1-4).

6. The material box device according to claim 1, characterized in that, The sealing element (1-11) includes an arc-shaped portion (1-11-2) that fills the space between the surface of the anilox roller (2) inside the hopper (1-12) and the left side of the hopper (1-12).

7. The material box device according to claim 6, characterized in that, The sealing element (1-11) further includes an upper connecting part (1-11-1) and a lower connecting part. The upper connecting part (1-11-1) is fixedly installed on the upper part of the arc-shaped part (1-11-2), and the lower connecting part is fixedly installed on the lower part of the arc-shaped part (1-11-2). Both the upper connecting part (1-11-1) and the lower connecting part are used to be fixedly installed with the slurry box (1-4).

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