A coating roll apparatus for ease of changeover

Abstract

The application relates to a coating roller device convenient to switch, which comprises a rack, a coating mechanism arranged on the rack, a standby coating mechanism arranged below the coating mechanism, the standby coating mechanism and the coating mechanism both comprising a coating tank, both ends of the coating tank being fixedly connected with positioning frames, dip rollers being rotationally connected to the positioning frames, the dip rollers being horizontally arranged in the axial direction, the dip rollers extending into the coating tank for dipping coating, roller shafts at one end of the dip rollers extending into the positioning frames, and a power assembly being arranged on the rack; a coating roller is rotationally connected to the top of the positioning frame, the coating roller is horizontally arranged in the axial direction, the side wall of the coating roller abuts against the dip roller, a pushing assembly for horizontally pushing out the coating mechanism is arranged in the rack, and a vertical driving assembly for vertically moving the standby coating mechanism is arranged at the bottom of the rack. The application has the effects of replacing the coating roller and the tank without stopping the machine and not influencing the processing efficiency of the coating machine.

Description

Technical Field

[0001] This application relates to the field of steel plate roll coating, and more particularly to a coating roll device that is easy to switch. Background Technology

[0002] Steel plates are flat steel products made by pouring molten steel, cooling it, and then pressing it down. Steel plates are classified into hot-rolled and cold-rolled types based on their rolling process.

[0003] In the home appliance industry, decorative steel plates are often added to home appliances to enhance their decorative effect. Nowadays, with the development of the times, decorative steel plates are becoming more and more diversified. They are often painted with colors to form colored steel plates, or simply color steel plates. Color steel plates are lightweight, beautiful and have good corrosion resistance.

[0004] In the processing of color steel, roller coating is the most widely used method. Roller coating uses a rotating roller as a carrier for the coating material. The coating forms a wet film of a certain thickness on the surface of the roller, and then, as the roller rotates, it comes into contact with the workpiece, applying the coating to the surface of the steel plate. A roller coating machine, also known as a roller-type coating machine, is equipped with coating rollers and a material trough. When changing to a different color coating, the machine needs to be stopped for cleaning the coating rollers and material trough, which affects the processing efficiency of the coating machine. Summary of the Invention

[0005] In order to replace the coating roller and material trough without stopping the machine and without affecting the processing efficiency of the coating machine, this application provides a coating roller device that is easy to switch.

[0006] The coating roller device that is easy to switch between uses provided in this application adopts the following technical solution:

[0007] A coating roller device with easy switching includes a frame, on which a coating mechanism is mounted. Below the coating mechanism, a standby coating mechanism is located on the frame. Both the standby and coating mechanisms include a paint tank. Positioning frames are fixedly connected to both ends of the paint tank. A dipping roller is rotatably connected to the positioning frames. The dipping roller is axially horizontal and extends into the paint tank to pick up paint. A roller shaft at one end of the dipping roller extends into the positioning frames. A power assembly is mounted on the frame and detachably connected to the roller shaft of the dipping roller for driving its rotation. A coating roller is rotatably connected to the top of the positioning frames. The coating roller is axially horizontal and its sidewall abuts against the dipping roller. A steel plate is transferred from the surface of the coating roller. A pushing assembly is located inside the frame to horizontally push the coating mechanism out. A vertical drive assembly is located at the bottom of the frame to push the standby coating mechanism vertically.

[0008] By adopting the above technical solution, the steel plate passes through the surface of the coating roller. The power component drives the dip roller to rotate, and the dip roller dips the paint in the paint tank and spreads the paint evenly on the coating roller. The coating roller coats the paint onto the surface of the steel plate. When a new paint needs to be replaced, the power component disengages from the roller shaft of the dip roller, and the push component pushes the coating mechanism horizontally out. Then, the vertical drive component pushes the standby coating mechanism to the position of the coating mechanism. The standby coating mechanism is equipped with new paint and a new coating roller, which can continue to coat the steel plate. This automatically completes the replacement of the coating mechanism without stopping the machine to clean and replace the coating mechanism, and does not affect the processing efficiency of the coating machine.

[0009] Optionally, the roller shaft end of the dipping roller is provided with a polygonal slot. The power assembly includes a positioning plate fixedly connected to the outer wall of the frame. A drive motor is slidably connected to the top of the positioning plate. The output shaft of the drive motor is a polygon that matches the shape of the slot. The output shaft of the drive motor is inserted into the slot. A drive cylinder is fixedly connected to the bottom of the positioning plate. The drive cylinder is horizontally positioned. A connecting block is fixedly connected to the end of the piston rod of the drive cylinder. A clearance groove is provided in the middle of the positioning plate. The connecting block passes through the clearance groove and is fixedly connected to the bottom of the drive motor.

[0010] By adopting the above technical solution, the output shaft of the drive motor is inserted into the slot to drive the dip roller to rotate. The connecting block can slide in the relief groove under the drive of the drive cylinder, thereby driving the output shaft of the drive motor to disengage or insert into the slot of the dip roller. This does not affect the replacement of the coating mechanism and the spare coating mechanism, and at the same time, it can drive the dip roller and coating roller to work normally.

[0011] Optionally, the top of the positioning frame is provided with a slot, the coating roller is rotatably connected in the slot, a cover plate is provided above the roller shaft of the coating roller, the bottom of the cover plate is provided with an arc-shaped groove, the arc-shaped groove is used to engage with the top of the roller shaft of the coating roller, and bolts for fixing the cover plate to the positioning frame are threaded at both ends of the cover plate.

[0012] By adopting the above technical solution, it is easy to disassemble and install the coating roller, which not only makes it easy to remove the coating roller for cleaning, but also makes it easy to replace the coating roller.

[0013] Optionally, the pushing assembly includes two pushing hydraulic cylinders fixedly connected to the frame. The two pushing hydraulic cylinders are horizontally arranged, the cylinder body of the pushing hydraulic cylinder is fixedly connected to the inner wall of the frame, and a pushing block is fixedly connected to the end of the piston rod of the pushing hydraulic cylinder. A receiving assembly for receiving the coating mechanism is provided on the side of the frame away from the pushing hydraulic cylinder.

[0014] By adopting the above technical solution, the piston rod of the receiving hydraulic cylinder extends, and the pusher pushes the paint tank towards the receiving assembly, thereby automatically pushing the coating mechanism onto the receiving assembly.

[0015] Optionally, the vertical drive assembly includes a fixed plate fixedly connected to the bottom of the frame, a fixed block fixedly connected to the bottom of the fixed plate, the fixed block abutting and supporting the middle position of the fixed plate, and notches opened near both ends of the fixed plate. A drive hydraulic cylinder is arranged below the notch, the drive hydraulic cylinder is vertically arranged, the piston rod of the hydraulic cylinder is vertically upward and its end is fixedly connected to a top plate, and the top plate extends into the notch.

[0016] By adopting the above technical solution, the piston rod of the hydraulic cylinder extends, which can push the top plate upward to lift the paint tank, and then lift the standby coating mechanism located on the positioning plate upward.

[0017] Optionally, a supporting hydraulic cylinder is fixedly connected inside the frame. The supporting hydraulic cylinder is horizontally arranged, and its cylinder body is fixedly connected to the inner wall of the frame and located below the pushing hydraulic cylinder. A horizontally arranged support plate is fixedly connected to the piston rod end of the supporting hydraulic cylinder. The support plate is used to abut against and support the bottom of the paint tank and the positioning frame. The width of the support plate is less than the distance between the two top plates.

[0018] By adopting the above technical solution, when it is necessary to replace the coating roller and the paint tank, the piston rod of the pushing hydraulic cylinder extends, pushing the paint tank and the positioning frame off the support plate. Then, the piston rod of the supporting hydraulic cylinder retracts, causing the support plate to slide towards the supporting hydraulic cylinder, reserving space for the standby coating mechanism to rise. After that, the piston rod of the driving hydraulic cylinder extends, and the top plate lifts the standby coating mechanism. Finally, the supporting hydraulic cylinder drives the support plate to slide to the bottom of the paint tank, thus providing support for the paint tank without interfering with the vertical movement of the standby coating mechanism.

[0019] Optionally, the receiving assembly includes a receiving frame, with lead screws rotatably connected to two corners of the receiving frame and guide columns fixedly connected to the other two corners. The axial directions of the lead screws and guide columns are both vertically arranged. A receiving plate is threadedly connected to both lead screws. The receiving plate is slidably connected to the guide columns. A receiving motor is fixedly connected to the receiving frame at the position corresponding to the lead screws. The output shaft of the receiving motor is fixed to the lead screws.

[0020] By adopting the above technical solution, when it is necessary to replace the coating roller and the coating tank, the receiving motor rotates forward, driving the receiving plate to move vertically to the same height as the support plate. The pushing hydraulic cylinder pushes the coating tank onto the cleaning plate. The receiving motor then rotates in reverse, which drives the receiving plate containing the coating mechanism to move downward, thus completing the switching of the coating mechanism.

[0021] Optionally, the top of the receiving plate is provided with a T-shaped groove, which is perpendicular to the sliding direction of the paint tank. A cleaning plate is slidably connected to the top of the receiving plate, and two T-shaped sliders are fixedly connected to the bottom of the cleaning plate. The T-shaped sliders are slidably connected in the T-shaped groove.

[0022] By adopting the above technical solution, the T-shaped slider is slidably connected in the T-shaped groove, which can slide the cleaning plate out from one end of the receiving frame, making it convenient to clean the paint tank and coating roller on the cleaning plate.

[0023] Optionally, a corner hydraulic cylinder is fixedly connected inside the frame. The cylinder body of the corner hydraulic cylinder is fixedly connected to the inner wall of the frame. The corner hydraulic cylinder is horizontally set. A hook is fixedly connected to the end of the piston rod of the corner hydraulic cylinder. Two limiting plates are fixedly connected to the side wall of the paint tank. The limiting plates are provided with mating grooves for the hook to be inserted.

[0024] By adopting the above technical solution, after the paint tank and coating roller are cleaned, the receiving plate and support plate are set at the same height, the piston rod of the corner hydraulic cylinder extends, the hook at the end of the corner hydraulic cylinder rotates into the notch groove of the limiting plate, and the piston rod of the corner hydraulic cylinder retracts, which can pull the coating mechanism to the fixed plate as a backup coating mechanism. This cycle is repeated to achieve non-stop replacement of the coating mechanism, so as not to affect the efficiency of steel plate coating. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the embodiment.

[0026] Figure 2 This is a cross-sectional view of an embodiment.

[0027] Figure 3 This is an exploded view created to highlight the coating mechanism.

[0028] Figure 4 This is a structural diagram designed to highlight the positional relationship between the standby coating mechanism and the coating mechanism.

[0029] Figure 5 This is a schematic diagram of the overall structure of the receiving assembly.

[0030] Figure 6 This is a structural diagram designed to highlight the angle hydraulic cylinder.

[0031] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Conveying mechanism; 21. Conveying roller; 3. Coating mechanism; 31. Paint tank; 311. Limiting plate; 32. Positioning frame; 321. Slot; 3221. Arc groove; 322. Cover plate; 33. Dipping roller; 331. Slot; 34. Coating roller; 35. Positioning plate; 351. Drive motor; 352. Drive cylinder; 353. Clearing groove; 354. Connecting block; 4. Backup coating mechanism; 41. Vertical drive assembly; 411. Fixing plate ; 412, Fixing block; 413, Notch groove; 414, Drive hydraulic cylinder; 415, Top plate; 42, Pushing assembly; 421, Pushing hydraulic cylinder; 422, Pushing block; 423, Support hydraulic cylinder; 424, Support plate; 43, Receiving assembly; 431, Receiving frame; 432, Lead screw; 433, Guide column; 434, Receiving motor; 435, Receiving plate; 436, T-shaped chute; 437, Cleaning plate; 438, T-shaped slider; 44, Corner hydraulic cylinder; 441, Hook. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0033] This application discloses a coating roller device that facilitates switching. (Refer to...) Figure 1 A coating roller device that is easy to switch includes a frame 1, a conveying mechanism 2 is provided at one end of the top of the frame 1, the conveying mechanism 2 is used to drive the steel plate forward, and a coating mechanism 3 is provided inside the frame 1 near the top, the coating mechanism 3 coats the coating onto the steel plate.

[0034] Reference Figure 2 The transmission mechanism 2 includes multiple transmission rollers 21, which are arranged horizontally along the axis. The transmission rollers 21 are rotatably connected to the top of the frame 1 and are used to transmit the steel plate forward.

[0035] Reference Figure 3The coating mechanism 3 includes a paint tank 31 disposed within the frame 1. Positioning frames 32 are fixedly connected to both ends of the paint tank 31. A dipping roller 33 is rotatably connected to the positioning frames 32. The dipping roller 33 is horizontally axially positioned and extends into the paint tank 31 to pick up paint. One end of the roller shaft of the dipping roller 33 extends into the positioning frame 32, and a polygonal slot 331 is provided at the end of the roller shaft (shown as a regular hexagon, but not limited to a regular hexagon). A positioning plate 35 is fixedly connected to the outer wall of the frame 1. A drive motor 351 is slidably connected to the top of the positioning plate 35. The output shaft of the drive motor 351 is shaped to match the slot 321. The polygon, shown as a regular hexagon in the figure, has its output shaft of drive motor 351 inserted into slot 331 to drive the dipping roller 33 to rotate. A drive cylinder 352 is fixedly connected to the bottom of positioning plate 35. Drive cylinder 352 is horizontally set, and a connecting block 354 is fixedly connected to the end of the piston rod of drive cylinder 352. A clearance groove 353 is opened in the middle of positioning plate 35. After passing through clearance groove 353, connecting block 354 is fixedly connected to the bottom of drive motor 351. Connecting block 354 can slide in clearance groove 353 under the drive of drive cylinder 352, thereby driving the output shaft of drive motor 351 to disengage or insert into slot 331 of dipping roller 33.

[0036] The top of the positioning frame 32 is provided with a slot 321, and a coating roller 34 is rotatably connected in the slot 321. A cover plate 322 is placed on the top of the roller shaft of the coating roller 34. The bottom of the cover plate 322 is provided with an arc-shaped groove 3221, which is used to engage with the top of the roller shaft of the coating roller 34. The two ends of the cover plate 322 are bolted to the positioning frame 32, thereby fixing the coating roller 34 to the positioning frame 32. The axial direction of the coating roller 34 is horizontal, and the side wall of the coating roller 34 abuts against the dip roller 33. The dip roller 33 rotates to dip the paint in the paint tank 31 onto the side wall of the dip roller 33. The dip roller 33 applies the paint onto the coating roller 34. The coating roller 34 abuts against the surface of the steel plate, thereby applying the paint to the surface of the steel plate.

[0037] Reference Figure 2 and Figure 4When it is necessary to change to a different color of paint, the coating roller 34 and paint tank 31 can be quickly replaced. A spare coating mechanism 4 is provided in the frame 1. The spare coating mechanism 4 is located below the coating mechanism 3. The spare coating mechanism 4 also includes a positioning frame 32, paint tank 31, dip roller 33 and coating roller 34. The spare coating mechanism 4 and the coating mechanism 3 have the same structure, which will not be described in detail here. A vertical drive assembly 41 is provided at the bottom of the frame 1. A pusher assembly 42 is provided in the frame 1. The pusher assembly is located below the transfer roller 21. A receiving assembly 43 is provided at one end of the frame 1 near the paint tank 31. The vertical drive assembly 41 is used to push the spare coating mechanism 4 upward to the position of the coating mechanism 3 to replace the coating mechanism 3. The pusher assembly 42 pushes the coating mechanism 3 out to one end of the frame 1. The receiving assembly 43 is used to receive the coating mechanism 3 pushed out of the frame 1 by the pusher assembly 42.

[0038] The vertical drive assembly 41 includes a fixed plate 411 fixedly connected to the bottom of the frame 1. The fixed plate 411 is horizontally arranged, and its two ends are fixedly connected to the inner wall of the frame 1. A fixed block 412 is fixedly connected to the bottom of the fixed plate 411. The fixed block 412 abuts and supports the middle position of the fixed plate 411 and is placed on the ground. The fixed plate 411 has notches 413 near its two ends. A drive hydraulic cylinder 414 is arranged below the notch 413. The drive hydraulic cylinder 414 is vertically arranged, and the piston rod of the hydraulic cylinder is vertically upward and its end is fixedly connected to a top plate 415. The top plate 415 extends into the notch 413. When the piston rod of the hydraulic cylinder extends, it can push the top plate 415 to move upward, thereby lifting the standby coating mechanism 4 located on the positioning plate 35 upward.

[0039] The feeding assembly 42 includes two feeding hydraulic cylinders 421 fixedly connected to the frame 1. The two feeding hydraulic cylinders 421 are horizontally arranged, and the cylinder body of the feeding hydraulic cylinder 421 is fixedly connected to the inner wall of the frame 1 and located below the transfer roller 21. A push block 422 made of rubber is fixedly connected to the end of the piston rod of the feeding hydraulic cylinder 421. A support hydraulic cylinder 423 is fixedly connected to the frame 1. The support hydraulic cylinder 423 is horizontally arranged, and the cylinder body of the support hydraulic cylinder 423 is fixedly connected to the inner wall of the frame 1 and located below the feeding hydraulic cylinder 421. A support plate 424 is fixedly connected to the end of the piston rod of the support hydraulic cylinder 423. The support plate 424 is horizontally arranged and is used to abut against and support the paint tank 31 and for positioning. At the bottom of the frame 32, the width of the support plate 424 is less than the distance between the two top plates 415. When it is necessary to replace the coating roller 34 and the paint tank 31, the piston rod of the pushing hydraulic cylinder 421 extends, pushing the paint tank 31 and the positioning frame 32 off the support plate 424. Then, the piston rod of the supporting hydraulic cylinder 423 retracts, causing the support plate 424 to slide towards the supporting hydraulic cylinder 423, leaving room for the standby coating mechanism 4 to rise. After that, the piston rod of the driving hydraulic cylinder 414 extends, and the top plate 415 lifts the standby coating mechanism 4. Finally, the supporting hydraulic cylinder 423 drives the support plate 424 to slide to the bottom of the paint tank 31, thus providing support for the paint tank 31 without interfering with the vertical movement of the standby coating mechanism 4.

[0040] Reference Figure 5 The receiving assembly 43 includes a receiving frame 431. Two symmetrical corners of the receiving frame 431 are rotatably connected to lead screws 432, and the other two symmetrical corners are fixedly connected to guide posts 433. The lead screws 432 and guide posts 433 are both vertically oriented. A receiving plate 435 is threaded onto both lead screws 432 and slidably connected to the guide posts 433. A receiving motor 434 is fixedly connected to the receiving frame 431 at a position corresponding to the lead screws 432. The output shaft of the receiving motor 434... The receiving plate 435 is fixed to the lead screw 432. A T-shaped groove 436 is provided on the top of the receiving plate 435, perpendicular to the sliding direction of the paint tank 31. A cleaning plate 437 is slidably connected to the top of the receiving plate 435. Two T-shaped sliders 438 are fixedly connected to the bottom of the cleaning plate 437, sliding within the T-shaped groove 436. This allows the cleaning plate 437 to slide out from one end of the receiving frame 431, facilitating the cleaning of the paint tank 31 and coating roller 34 on the cleaning plate 437. When it is necessary to replace the coating roller 34 and paint tank 31, the receiving motor 434 rotates forward, driving the receiving plate 435 to move vertically to the same height as the support plate 424. The pushing hydraulic cylinder 421 pushes the paint tank 31 onto the cleaning plate 437. The receiving motor 434 then rotates in reverse, driving the receiving plate 435, which houses the coating mechanism 3, to move downwards, completing the switching of the coating mechanism 3.

[0041] Reference Figure 6 Two corner hydraulic cylinders 44 are fixedly connected inside the frame 1. The cylinder body of the corner hydraulic cylinder 44 is fixedly connected to the inner wall of the frame 1. The corner hydraulic cylinder 44 is horizontally set, and a hook 441 is fixedly connected to the end of the piston rod of the corner hydraulic cylinder 44. The height of the corner hydraulic cylinder 44 is slightly higher than that of the fixed plate 411. Two limiting plates 311 are fixedly connected to the side wall of the paint tank 31. The limiting plates 311 are L-shaped. After the paint tank 31 and the coating roller 34 are cleaned, the receiving plate 435 and the support plate 424 are set at the same height. The piston rod of the corner hydraulic cylinder 44 extends, and the hook 441 at the end of the corner hydraulic cylinder 44 rotates into the limiting plate 311. The piston rod of the corner hydraulic cylinder 44 retracts, which can pull the coating mechanism 3 onto the fixed plate 411 as a spare coating mechanism 4. This cycle is repeated to achieve the replacement of the coating mechanism 3 without stopping the machine, so as not to affect the efficiency of steel plate coating.

[0042] The implementation principle of the coating roller device for easy cutting in this application embodiment is as follows: the transfer roller 21 transfers the steel plate to the top of the coating roller 34, the drive motor 351 drives the dipping roller 33 to rotate and dip into the coating tank 31, the dipping roller 33 applies the coating onto the coating roller 34, the coating roller 34 abuts against the surface of the steel plate, thereby applying the coating onto the surface of the steel plate; when it is necessary to replace the coating roller 34 and the coating tank 31, firstly, the receiving motor 434 rotates forward, driving the receiving plate 435 to move vertically to the same height as the support plate 424, then, the piston rod of the pushing hydraulic cylinder 421 extends, and the coating is applied to the steel plate. The material trough 31 and the positioning frame 32 are pushed from the support plate 424 onto the receiving plate 435; then, the piston rod of the supporting hydraulic cylinder 423 retracts, causing the support plate 424 to slide in the direction of the supporting hydraulic cylinder 423, reserving space for the standby coating mechanism 4 to rise; after the support plate 424 retracts, the piston rod of the driving hydraulic cylinder 414 extends, and the top plate 415 lifts the standby coating mechanism 4; finally, the supporting hydraulic cylinder 423 drives the support plate 424 to slide to the bottom of the paint tank 31, providing support for the paint tank 31, thus automatically replacing the coating mechanism 3 with the standby coating mechanism 4. After the paint tank 31 and coating roller 34 are cleaned, the receiving plate 435 and support plate 424 are set at the same height. The piston rod of the corner hydraulic cylinder 44 extends, and the hook 441 at the end of the corner hydraulic cylinder 44 rotates into the limiting plate 311. The piston rod of the corner hydraulic cylinder 44 retracts, which can pull the coating mechanism 3 onto the fixed plate 411 as a spare coating mechanism 4. This cycle is repeated to achieve non-stop replacement of the coating mechanism 3, so as not to affect the efficiency of steel plate coating.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A coating roller device that is easy to switch between, comprising a frame (1) and a coating mechanism (3) disposed on the frame (1), characterized in that: The frame (1) is located below the coating mechanism (3) and a spare coating mechanism (4) is provided. Both the spare coating mechanism (4) and the coating mechanism (3) include a paint tank (31). The two ends of the paint tank (31) are fixedly connected to a positioning frame (32). A dipping roller (33) is rotatably connected to the positioning frame (32). The dipping roller (33) is axially horizontally arranged and extends into the paint tank (31) to pick up paint. The roller shaft at one end of the dipping roller (33) extends into the positioning frame (32). The frame (1) is provided with a power component that is detachably connected to the roller shaft of the dipping roller (33) and is used to drive the dipping roller (33) to rotate. The top of the positioning frame (32) is rotatably connected to a coating roller (34), the coating roller (34) is axially horizontal, and the side wall of the coating roller (34) abuts against the dip roller (33). The steel plate is transferred from the surface of the coating roller (34). The frame (1) is provided with a pusher assembly (42) that pushes the coating mechanism (3) horizontally out. The bottom of the frame (1) is provided with a vertical drive assembly (41) that pushes the standby coating mechanism (4) to move vertically. The pushing assembly (42) includes two pushing hydraulic cylinders (421) fixedly connected to the frame (1). The two pushing hydraulic cylinders (421) are horizontally arranged. The cylinder body of the pushing hydraulic cylinder (421) is fixedly connected to the inner wall of the frame (1). A pushing block (422) is fixedly connected to the end of the piston rod of the pushing hydraulic cylinder (421). A receiving assembly (43) for receiving the coating mechanism (3) is provided on the side of the frame (1) away from the pushing hydraulic cylinder (421). The vertical drive assembly (41) includes a fixed plate (411) fixedly connected to the bottom of the frame (1), a fixed block (412) fixedly connected to the bottom of the fixed plate (411), the fixed block (412) abutting and supporting the middle position of the fixed plate (411), and notches (413) opened near both ends of the fixed plate (411). A drive hydraulic cylinder (414) is arranged below the notch (413). The drive hydraulic cylinder (414) is arranged vertically, the piston rod of the drive hydraulic cylinder (414) is vertically upward and the end is fixedly connected to a top plate (415), and the top plate (415) extends into the notch (413). A support hydraulic cylinder (423) is fixedly connected inside the frame (1). The support hydraulic cylinder (423) is horizontally set. The cylinder body of the support hydraulic cylinder (423) is fixedly connected to the inner wall of the frame (1) and is located below the pusher hydraulic cylinder (421). A horizontally set support plate (424) is fixedly connected to the piston rod end of the support hydraulic cylinder (423). The support plate (424) is used to abut against and support the bottom of the paint tank (31) and the positioning frame (32). The width of the support plate (424) is less than the distance between the two top plates (415). The receiving assembly (43) includes a receiving frame (431), with lead screws (432) rotatably connected to two corners of the receiving frame (431) and guide columns (433) fixedly connected to the other two corners. The axial directions of the lead screws (432) and guide columns (433) are both vertical. A receiving plate (435) is threadedly connected to both lead screws (432). The receiving plate (435) is slidably connected to the guide columns (433). A receiving motor (434) is fixedly connected to the receiving frame (431) at the position corresponding to the lead screws (432). The output shaft of the receiving motor (434) is fixed to the lead screws (432).

2. The coating roller device for easy switching according to claim 1, characterized in that: The roller shaft of the dipping roller (33) has a polygonal slot (331) at its end. The power assembly includes a positioning plate (35) fixedly connected to the outer wall of the frame (1). A drive motor (351) is slidably connected to the top of the positioning plate (35). The output shaft of the drive motor (351) is a polygon that matches the shape of the slot (331). The output shaft of the drive motor (351) is inserted into the slot (331). A drive cylinder (352) is fixedly connected to the bottom of the positioning plate (35). The drive cylinder (352) is horizontally arranged. A connecting block (354) is fixedly connected to the end of the piston rod of the drive cylinder (352). A clearance groove (353) is provided in the middle of the positioning plate (35). The connecting block (354) passes through the clearance groove (353) and is fixedly connected to the bottom of the drive motor (351).

3. The coating roller device for easy switching according to claim 1, characterized in that: The top of the positioning frame (32) is provided with a slot (321), and the coating roller (34) is rotatably connected in the slot (321). A cover plate (322) is provided above the roller shaft of the coating roller (34), and an arc groove (3221) is provided at the bottom of the cover plate (322). The arc groove (3221) is used to engage with the top of the roller shaft of the coating roller (34). The two ends of the cover plate (322) are threaded with bolts to fix the cover plate (322) and the positioning frame (32).

4. The coating roller device for easy switching according to claim 1, characterized in that: The top of the receiving plate (435) is provided with a T-shaped groove (436), which is perpendicular to the sliding direction of the paint tank (31). A cleaning plate (437) is slidably connected to the top of the receiving plate (435), and two T-shaped sliders (438) are fixedly connected to the bottom of the cleaning plate (437). The T-shaped sliders (438) are slidably connected in the T-shaped groove (436).

5. The coating roller device for easy switching according to claim 1, characterized in that: A rotary hydraulic cylinder (44) is fixedly connected inside the frame (1). The cylinder body of the rotary hydraulic cylinder (44) is fixedly connected to the inner wall of the frame (1). The rotary hydraulic cylinder (44) is horizontally set. A hook (441) is fixedly connected to the end of the piston rod of the rotary hydraulic cylinder (44). Two limiting plates (311) are fixedly connected to the side wall of the paint tank (31). The limiting plates (311) are provided with a mating groove for the hook (441) to be inserted.

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