Coating mechanism capable of recycling coating through scraper

Abstract

The utility model relates to a coating mechanism, in particular to a coating mechanism for recycling coating through a scraper. The coating mechanism comprises a supporting frame, an air cylinder, a telescopic rod, a slit coating head, limiting blocks, a charging box, a conveying pipe and the like, the air cylinder is fixedly connected to the top of the supporting frame, the telescopic rod is arranged on the air cylinder, the slit coating head is fixedly connected to the bottom of the telescopic rod, and the limiting blocks are fixedly connected to the two sides of the slit coating head. And the rear portion of one side of the supporting frame is fixedly connected with a charging box, and the lower portion of one side of the charging box is connected and communicated with a conveying pipe. According to the utility model, the air cylinder drives the slit coating head to move downwards and drives the scraper at the same time, so that the scraper scrapes redundant coating on a base material (a film and lining paper) into the collecting box in the coating process, and the coating stored in the collecting box is pumped by the metering pump, so that the redundant coating is recycled.

Description

Technical Field

[0001] The utility model relates to a coating mechanism, in particular to a coating mechanism for recovering coating by a doctor blade. Background Art

[0002] The coating process is a process of coating one or more layers of liquid on a substrate based on the research of the physical properties of fluids. The substrate is usually a flexible film or liner paper. Then, the coated liquid coating is dried or cured in an oven to form a film layer with special functions. Currently, the coating methods for lithium-ion battery electrodes mainly include comma roll transfer coating and slot extrusion coating. The coating process is usually divided into two categories: one is to coat liquid materials, and the common coating methods include spraying, scraping, rolling, and brushing, etc.; the other is to coat solid materials, and the common coating methods include calendering, hot pressing, electrocoating, and oxidation coating, etc. The coating process is widely used in industries such as chemical engineering, automotive, aviation, shipbuilding, construction, and electronics.

[0003] When coating a substrate (film and liner paper), generally more coating is applied to the fabric to prevent the coating on the substrate (film and liner paper) from being too little and not meeting the quality standards. If the excess coating is not recovered, it is likely to cause waste and increase the production cost of coating.

[0004] Therefore, it is necessary to design a coating mechanism for recovering coating by a doctor blade to solve the above technical problems. Summary of the Invention

[0005] In order to overcome the drawback that when coating a substrate (film and liner paper), generally more coating is applied to the fabric to prevent the coating on the substrate (film and liner paper) from being too little and not meeting the quality standards. If the excess coating is not recovered, it is likely to cause waste and increase the production cost of coating. The technical problem to be solved is: to provide a coating mechanism for recovering coating by a doctor blade.

[0006] The technical solution is as follows: A coating mechanism for recovering paint by a scraper, including a support frame, a cylinder, a telescopic rod, a slit coating head, a limit block, a loading box, a delivery pipe, a telescopic pipe, a collection box, a recovery pipe, a metering pump, a scraper, an elastic member, and a controller. The top of the support frame is fixedly connected to a cylinder, and a telescopic rod is provided on the cylinder. The bottom of the telescopic rod is fixedly connected to a slit coating head. Limit blocks are fixedly connected to both sides of the slit coating head, and the two limit blocks are slidably connected to the support frame. A loading box is fixedly connected to the rear part of one side of the support frame. A delivery pipe is connected and communicated to the lower part of one side of the loading box. One end of the delivery pipe away from the loading box is connected and communicated to a telescopic pipe. The lower end of the telescopic pipe passes through the support frame and is connected to the slit coating head. The bottom of the support frame is fixedly connected to a collection box. A recovery pipe is connected and communicated between the lower part of one side of the collection box and the left part of the delivery pipe. A metering pump is fixedly connected to the left part of the delivery pipe. A scraper is slidably connected to the rear part of the support frame, and the scraper is located behind the slit coating head. A plurality of elastic members are symmetrically connected between the support frame and the scraper. A controller is fixedly connected to one side of the loading box, and the cylinder and the metering pump are both electrically connected to the controller.

[0007] Furthermore, it further includes a guide rod, and the lower part of one side of the support frame is rotatably connected to a guide rod.

[0008] Furthermore, a sealing cover is slidably provided on the top of the loading box.

[0009] Furthermore, it further includes a fixing block, a loading cylinder, and a roller. Fixing blocks are symmetrically connected to the lower part of one side of the support frame. A loading cylinder is placed between the front parts of the two fixing blocks. Two rollers are rotatably connected between the rear parts of the two fixing blocks, and the two rollers are distributed vertically.

[0010] Furthermore, the bottom of the scraper is slightly higher than the bottom of the slit coating head.

[0011] Furthermore, the structure of the telescopic pipe is an inverted Y-shaped pipe.

[0012] The beneficial effects are as follows: 1. In the present utility model, the cylinder drives the slit coating head to move downward and simultaneously drives the scraper, so that the scraper scrapes the excess paint on the substrate (film and backing paper) into the collection box during the coating process, and the metering pump is also used to extract the paint stored in the collection box, so that the excess paint is recycled.

[0013] 2. In the present utility model, by providing a loading box, the paint is stored in the loading box and extracted by the metering pump, so as to perform the replenishment treatment during coating. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0015] Figure 2 It is a three-dimensional sectional structural schematic diagram of components such as the support frame, cylinder, and telescopic rod of the present utility model.

[0016] Figure 3 This is a three-dimensional structural schematic diagram of components such as the loading box, conveying pipe, and telescopic pipe of the present utility model.

[0017] Figure 4 This is a three-dimensional structural schematic diagram of components such as the scraper, elastic member, and guide rod of the present utility model.

[0018] Figure 5 This is a three-dimensional structural schematic diagram of components such as the fixing block, loading cylinder, and roller of the present utility model.

[0019] In the attached drawing reference numerals: 1 - support frame, 2 - cylinder, 3 - telescopic rod, 4 - slit coating head, 5 - limit block, 6 - loading box, 7 - conveying pipe, 8 - telescopic pipe, 9 - collection box, 10 - recovery pipe, 11 - metering pump, 12 - scraper, 13 - elastic member, 14 - guide rod, 15 - fixing block, 16 - loading cylinder, 17 - roller, 18 - controller. Detailed implementation manners

[0020] The following will detail the preferred technical solutions of the present utility model with reference to the attached drawings.

[0021] Embodiment: A coating mechanism for recovering coating through a scraper, as Figures 1-4 shown, includes a support frame 1, a cylinder 2, a telescopic rod 3, a slit coating head 4, a limit block 5, a loading box 6, a conveying pipe 7, a telescopic pipe 8, a collection box 9, a recovery pipe 10, a metering pump 11, a scraper 12, an elastic member 13, and a controller 18. The top of the support frame 1 is connected to the cylinder 2 by bolts. The cylinder 2 is provided with a telescopic rod 3. The bottom of the telescopic rod 3 is fixedly connected to the slit coating head 4. The left and right sides of the slit coating head 4 are welded with limit blocks 5, and the two limit blocks 5 are slidably connected to the support frame 1. The left rear part of the support frame 1 is connected to the loading box 6 by bolts. The top of the loading box 6 is slidably provided with a sealing cover. The lower part of the front side of the loading box 6 is connected and communicated with a conveying pipe 7. One end of the conveying pipe 7 far from the loading box 6 is connected and communicated with a telescopic pipe 8. The structure of the telescopic pipe 8 is an inverted Y-shaped pipe. The lower end of the telescopic pipe 8 passes through the support frame 1 and is connected to the slit coating head 4. The bottom of the support frame 1 is welded with a collection box 9. A recovery pipe 10 is connected and communicated between the lower left part of the collection box 9 and the left part of the conveying pipe 7. The left part of the conveying pipe 7 is connected to a metering pump 11 by bolts. The rear part of the support frame 1 is slidably connected to a scraper 12. The bottom of the scraper 12 is slightly higher than the bottom of the slit coating head 4, and the scraper 12 is located behind the slit coating head 4. Two elastic members 13 are symmetrically connected left and right between the support frame 1 and the scraper 12. The front side of the loading box 6 is connected to a controller 18 by bolts, and both the cylinder 2 and the metering pump 11 are electrically connected to the controller 18.

[0022] As Figure 4As shown in the figure, it further includes a guide rod 14, and the lower part of the rear side of the support frame 1 is rotatably connected with the guide rod 14.

[0023] As Figure 5 shown in the figure, it further includes a fixed block 15, a loading cylinder 16 and a roller 17. The lower parts of the left and right sides of the front side of the support frame 1 are symmetrically connected with the fixed block 15. A loading cylinder 16 is placed between the fronts of the two fixed blocks 15. Two rollers 17 are rotatably connected between the rears of the two fixed blocks 15, and the two rollers 17 are distributed vertically.

[0024] When coating treatment is to be carried out on the base materials (film and backing paper), this equipment can be used. First, open the sealing cover on the loading box 6, then pour the coating into the loading box 6. After pouring, close the sealing cover on the loading box 6. Subsequently, remove the loading cylinder 16, then put the base materials (film and backing paper) on the loading cylinder 16. After putting them on, put the loading cylinder 16 back. Then, start the cylinder 2 through the controller 18. The cylinder 2 drives the slot coating head 4 and the limit block 5 to move downward, and the telescopic tube 8 undergoes tensile deformation. When the slot coating head 4 moves downward to a certain height, the limit blocks 5 on both sides of the slot coating head 4 will contact the scraper 12, thereby driving the scraper 12 to move downward together. At this time, the elastic member 13 undergoes tensile deformation. After the slot coating head 4 and the scraper 12 move to the appropriate positions, close the cylinder 2 through the controller 18.

[0025] Then the staff pulls the base materials (film and backing paper) around the two rollers 17 and pulls them towards the gap between the collection box 9 and the slot coating head 4. At this time, the base materials (film and backing paper) will be in a stretched state, preventing the base materials (film and backing paper) from being unevenly coated during coating. Then, start the metering pump 11 through the controller 18, and the staff can also control the flow rate and pressure of each extraction of the metering pump 11 through the controller 18, so as to ensure the stability and uniformity of the coating process. After the metering pump 11 is started, it will extract the coating from the loading box 6 into the delivery pipe 7. The coating in the delivery pipe 7 is delivered to the slot coating head 4, and due to the structure of the telescopic tube 8 being an inverted Y-shaped tube, the coating will flow into the slot coating head 4 more quickly and evenly. Subsequently, the coating will flow out of the slot coating head 4, thereby carrying out coating treatment on the base materials (film and backing paper). Then, keep pulling the base materials (film and backing paper) backward, and the coated base materials (film and backing paper) will slide along the guide rod 14, so that all the base materials (film and backing paper) are subjected to coating treatment.

[0026] Moreover, when coating the base materials (film and backing paper), the doctor blade 12 will scrape the coated area to remove the excess coating. The excess coating will flow into the collection box 9, and the metering pump 11 will extract the coating stored in the collection box 9 through the recovery pipe 10 for coating. When all the base materials (film and backing paper) are completely coated, the metering pump 11 is turned off through the controller 18, and the cylinder 2 is started through the controller 18. The cylinder 2 drives the slot coating head 4 and the limit block 5 to reset upward. At this time, the telescopic pipe 8 resets. When the limit block 5 resets upward, it will disengage from the doctor blade 12. The elastic member 13 resets and drives the doctor blade 12 to move upward to its original position. After the slot coating head 4 resets, the cylinder 2 can be turned off through the controller 18. Finally, clean the loading box 6 and the slot coating head 4 regularly to prevent staining and other situations during the next coating. If the base materials (film and backing paper) still need to be coated, repeat the above operations.

[0027] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it should not be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A coating mechanism for recovering paint by a scraper, characterized in that: The invention comprises a support frame (1), a cylinder (2), a telescopic rod (3), a slit coating head (4), a limit block (5), a loading box (6), a conveying pipe (7), a telescopic pipe (8), a collecting box (9), a recovery pipe (10), a metering pump (11), a scraper (12), an elastic member (13) and a controller (18). The top of the support frame (1) is fixedly connected to the cylinder (2), the cylinder (2) is provided with a telescopic rod (3), the bottom of the telescopic rod (3) is fixedly connected to the slit coating head (4), both sides of the slit coating head (4) are fixedly connected to the limit blocks (5), and the two limit blocks (5) are slidably connected to the support frame (1), the rear part of one side of the support frame (1) is fixedly connected to the loading box (6), the lower part of one side of the loading box (6) is connected and communicated with the conveying pipe (7), and the conveying pipe (7) is connected to the lower part of the loading box (6). One end of the delivery pipe (7) away from the loading box (6) is connected to and communicated with a telescopic pipe (8), the lower end of the telescopic pipe (8) passes through the support frame (1) and is connected to the slit coating head (4), a collecting box (9) is fixedly connected to the bottom of the support frame (1), a lower part of one side of the collecting box (9) is connected to the left part of the delivery pipe (7) and is connected to a recovery pipe (10), a metering pump (11) is fixedly connected to the left part of the delivery pipe (7), a scraper (12) is slidably connected to the rear part of the support frame (1), and the scraper (12) is located at the rear part of the slit coating head (4), a plurality of elastic members (13) are symmetrically connected between the support frame (1) and the scraper (12), a controller (18) is fixedly connected to one side of the loading box (6), and the cylinder (2) and the metering pump (11) are both electrically connected to the controller (18).

2. A coating mechanism for recovering paint by a scraper according to claim 1, characterized in that: It also includes a guide rod (14), and the lower part of one side of the support frame (1) is rotatably connected to the guide rod (14).

3. A coating mechanism for recovering paint by a scraper according to claim 2, characterized in that: A sealing cover is slidably provided on the top of the charging box (6).

4. A coating mechanism for recovering paint by a scraper according to claim 3, characterized in that: It also includes a fixed block (15), a charging barrel (16) and a roller (17), wherein the lower part of one side of the support frame (1) is symmetrically connected to the fixed block (15), a charging barrel (16) is placed between the front parts of the two fixed blocks (15), and two rollers (17) are rotatably connected between the rear parts of the two fixed blocks (15), and the two rollers (17) are distributed up and down.

5. A coating mechanism for recovering paint by a scraper according to claim 4, characterized in that: The bottom of the scraper (12) is slightly higher than the bottom of the slit coating head (4).

6. A coating mechanism for recovering paint by a scraper according to claim 5, characterized in that: The telescopic tube (8) is structured as an inverted Y-shaped tube.

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