Anti-rust paint spraying device for paint baking barrel

The rust-preventive paint spraying device for paint buckets, which integrates cutting and grinding functions, solves the problems of time-consuming, labor-intensive, and safety hazards in the processing of paint buckets in the existing technology. It achieves efficient simultaneous cutting and grinding, improving processing efficiency and safety.

CN121017015APending Publication Date: 2025-11-28XINXIANG HEDE PACKAGING MATERIALS CO LTD
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Patent Information

Application Number
CN202511258754.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-04
Publication Date
2025-11-28

AI Technical Summary

Technical Problem

In the existing technology, the cutting and polishing process of paint buckets is time-consuming and labor-intensive and prone to accidents, especially during multiple moves, which poses safety hazards.

Method used

A rust-preventive paint spraying device for paint buckets was designed, integrating cutting and grinding functions. The cutting device is driven by an electric telescopic rod, and the cutting and grinding are carried out simultaneously through a gear transmission system. The inner wall is ground by using a sleeve and grinding blocks during the cutting process.

Benefits of technology

This technology enables simultaneous grinding of the inner wall of the paint can during the cutting process, reducing processing time and safety hazards, and improving processing efficiency and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The anti-rust paint spraying device for the paint baking barrel comprises a device shell and a plurality of containing plates, and a plurality of second supporting rods are arranged at the four corners of the bottom of each containing plate. A first rotating rod, a second rotating rod, a rack, a third rotating rod and a sleeve are adopted, when the cutting device continues to move downwards, the rack is driven to move downwards to drive a first gear to rotate clockwise, and when the first rotating rod rotates clockwise, the second rotating rod is driven to rotate anticlockwise in the vertical direction; when a second rotating rod rotates anticlockwise in the vertical direction, a third rotating rod is driven to rotate anticlockwise in the horizontal direction, a sleeve rotates along with the third rotating rod, the sleeve slides out under the extrusion action of a fixing block and the side wall of a threaded groove, and meanwhile, the sleeve rotates; and the inner wall of the baking varnish barrel is polished through rotation and telescopic movement of the polishing block at the end of the sleeve.
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Description

[0001] The present application relates to the technical field of rust-proof paint spraying devices, and particularly relates to a rust-proof paint spraying device for paint baking barrels. BACKGROUND

[0002] A paint baking barrel refers to a barrel-shaped structure made of steel, which is widely used for containing objects. In use, the rust-proof capability is one of the most important properties. Therefore, in the actual production process, rust-proof paint is sprayed on the inner side of the barrel-shaped structure, and then baking and drying are performed to form a finished product.

[0003] At present, the paint baking barrel in the factory is first cut into a tubular part, and then the paint baking barrel semi-finished product is processed into a paint baking barrel through polishing and post-processing of the paint baking barrel semi-finished product. However, the current paint baking barrel is cut and polished first, which not only consumes time and effort, but also is prone to accidents during multiple movements.

[0004] Therefore, the present application provides a rust-proof paint spraying device for paint baking barrels. SUMMARY

[0005] The present application aims to solve the problem that the current paint baking barrel is cut and polished first, which not only consumes time and effort, but also is prone to accidents during multiple movements.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0007] A rust-proof paint spraying device for paint baking barrels comprises a device shell and a plurality of placement plates. The bottom corners of the plurality of placement plates are provided with a plurality of second supporting rods. The device shell and the plurality of placement plates are fixedly connected through a plurality of first supporting rods. The plurality of first supporting rods are uniformly distributed at the bottom corners of the device shell. The plurality of placement plates are horizontally symmetrically placed and do not contact each other. The top of the plurality of placement plates is provided with a same paint baking barrel. The top of the device shell is provided with an electric telescopic rod. The electric telescopic rod comprises an electric telescopic rod control end and an electric telescopic rod output end. The electric telescopic rod output end penetrates the top of the device shell. The bottom of the device shell is provided with a cutting device. The top of the cutting device is coaxially fixedly connected with the electric telescopic rod output end. The two sides of the cutting device are respectively provided with a first positioning rod and a second positioning rod. The first positioning rod and the second positioning rod penetrate the bottom of the device shell. The cutting device, the first positioning rod and the second positioning rod are all slidingly connected with the bottom of the device shell.

[0008] Preferably, the cutting device comprises a fixed rod and a first sliding rod. The side wall of the fixed rod is provided with a sliding groove. A plurality of positioning holes are formed in the bottom of the sliding groove. The first sliding rod is slidingly connected in the sliding groove. A through hole is formed in the first sliding rod. A positioning pin is slidingly connected in the through hole.

[0009] Preferably, the first positioning rod and the second positioning rod are fixedly connected with positioning clamps, the positioning clamps are half-circular, cavities are arranged in the first positioning rod and the second positioning rod, limiting devices are arranged in the cavities, the limiting devices comprise abutting blocks, second notches and second sliding rods, the abutting blocks and the second sliding rods are coaxially fixedly connected, the second notches are arranged on the side walls of the second sliding rods, the top of the abutting block is conical, the bottom of the abutting block is cylindrical, and the second sliding rod slidably penetrates the top of the positioning clamp.

[0010] Preferably, the fixed rod is provided with a placing hole, a limiting rod is slidably connected in the placing hole, the limiting rod comprises a first limiting rod, a spring and a second limiting rod, the first limiting rod and the second limiting rod are connected through the spring, the opposite side walls of the first positioning rod and the second positioning rod are provided with sliding holes, the first limiting rod penetrates the sliding hole in the side wall of the first positioning rod and is communicated with the cavity, the second limiting rod penetrates the sliding hole in the side wall of the second positioning rod and is communicated with the cavity, the fixed rod is provided with a first notch, a rack is arranged on one side wall of the first notch, and a cutting blade is arranged at the bottom of the fixed rod.

[0011] Preferably, the first sliding rod is L-shaped, the first sliding rod comprises a horizontal rod and a vertical rod, the horizontal rod is rotatably connected with a connecting rod, the end of the horizontal rod is provided with a supporting plate for supporting the connecting rod, the bottom of the connecting rod is provided with an electric motor, the top of the connecting rod is rotatably provided with a plurality of transmission rods, the electric motor is coaxially fixedly connected with one of the transmission rods at the end of the connecting rod, a same transmission belt is arranged outside the transmission rods, and the outer side wall of the transmission belt is provided with a polishing material.

[0012] Preferably, the first positioning rod is provided with a first rotating rod, the first rotating rod penetrates a second notch arranged on the second sliding rod in the first positioning rod, the first rotating rod is slidably connected in the second notch, coaxial first and second gears are fixedly connected to the two ends of the first rotating rod, the first gear is in meshing transmission with the rack, a fixed shell is arranged outside the first rotating rod, and one end of the fixed shell is fixedly connected with the side wall of the first rotating rod.

[0013] Preferably, the fixed shell comprises a first horizontal pipe, a vertical pipe and a second horizontal pipe, the first horizontal pipe is coaxially rotatably connected with the first rotating rod, the vertical pipe is coaxially rotatably connected with a second rotating rod, the second rotating rod is provided with second gears at both ends, the second horizontal pipe is coaxially rotatably connected with a third rotating rod, the third rotating rod is provided with a second gear at one end, the second gear at one end of the second rotating rod is in meshing transmission with the second gear on the first rotating rod, the second gear at the other end of the second rotating rod is in meshing transmission with the second gear on the third rotating rod, and the second gears are bevel gears.

[0014] Preferably, the third rotating rod is coaxially rotatably connected to a sleeve, the outer wall of the sleeve is provided with a threaded groove, the inner wall of the fixed housing end is provided with a fixing block, the fixing block is slidably connected in the threaded groove, the end of the sleeve is fixedly connected to a grinding block, the grinding block is slidably connected to the end of the fixed housing, the side wall of the third rotating rod is provided with a sliding groove, the inner wall of the sleeve is provided with a slider, the slider is slidably connected in the sliding groove.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention employs a first rotating rod, a second rotating rod, a rack, a third rotating rod, and a sleeve. When the cutting device continues to move downward, it drives the rack downward, which in turn drives the first gear to rotate clockwise. As the first rotating rod rotates clockwise, it drives the second rotating rod to rotate counterclockwise in the vertical direction. When the second rotating rod rotates counterclockwise in the vertical direction, it drives the third rotating rod to rotate counterclockwise in the horizontal direction. Since the sleeve rotates together with the third rotating rod, it slides outward due to the squeezing action of the fixed block and the side wall of the threaded groove. At the same time, the sleeve rotates, and the inner wall of the paint can is polished by the rotation and extension of the polishing block at the end of the sleeve.

[0017] 2. This invention employs a first sliding rod, a connecting rod, a motor, multiple transmission rods, and a transmission belt with a polishing material on its outer wall. As the cutting device moves downward, the connecting rod is supported by the upward force of the paint bucket and rotates clockwise. When the crossbar continues to move downward to the lowest point, the connecting rod loses its support force and returns to a horizontal position. When the cutting is completed and the blade is retracted, the connecting rod is blocked by the crossbar and does not rotate. When the motor starts, the transmission belt moves together. The polishing material on the outer wall of the transmission belt can polish the cut surface as the connecting rod rises. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a rust-preventive paint spraying device for a paint can according to the present invention;

[0019] Figure 2 This is a front view of a rust-preventive paint spraying device for a paint can according to the present invention;

[0020] Figure 3 This is a schematic diagram of the limiting device in a rust-preventive paint spraying device for a paint can according to the present invention;

[0021] Figure 4 This is a schematic diagram of the cleaning device in a rust-preventive paint spraying device for paint buckets proposed in this invention;

[0022] Figure 5This is a schematic diagram of the cutting device in a rust-preventive paint spraying device for a paint can according to the present invention;

[0023] Figure 6 for Figure 4 Enlarged schematic diagram of the structure at point C;

[0024] Figure 7 for Figure 1 Enlarged structural diagram at point A;

[0025] Figure 8 for Figure 2 Enlarged structural diagram at point B;

[0026] Figure 9 This is a schematic diagram of the limiting rod in a rust-preventive paint spraying device for a paint can according to the present invention;

[0027] Figure 10 This is a schematic diagram of the third rotating rod in a rust-preventive paint spraying device for paint buckets proposed in this invention.

[0028] In the diagram: 1. Device housing; 2. First motor; 3. Electric telescopic rod; 4. First positioning rod; 5. First support rod; 6. Positioning clamp; 7. Paint bucket; 8. Placement plate; 9. Second support rod; 10. Fixed housing; 11. First rotating rod; 12. Second rotating rod; 13. Cutting device; 131. Fixed rod; 132. First sliding rod; 133. Placement hole; 134. Rack; 135. First slot; 136. Slide groove; 137. Positioning hole; 138. Cutting blade; 14. Limiting rod; 141. First limiting rod; 142. Spring; 143. Second limiting rod; 15. Second positioning rod; 16. Contact block; 17. Second slot; 18. Second sliding rod; 19. Third rotating rod; 20. First gear; 21. Second gear; 22. Sleeve; 23. Grinding block; 24. Connecting rod; 25. Second motor; 26. Transmission rod; 27. Transmission belt. Detailed Implementation

[0029] Reference Figures 1-10A rust-preventive paint spraying device for a paint bucket includes a device housing 1 and multiple placement plates 8. Multiple second support rods 9 are provided at the four bottom corners of each placement plate 8. The device housing 1 and the multiple placement plates 8 are fixedly connected by multiple first support rods 5. This arrangement aims to place the processing device in a relatively flat working environment. The multiple first support rods 5 are evenly distributed at the four bottom corners of the device housing 1. The multiple placement plates 8 are horizontally symmetrically placed and do not contact each other. This arrangement aims to leave a gap during the descent of the cutter, preventing the cutter from failing to reach its designated position and thus completing the cut. A paint bucket 7 is mounted on the top of the multiple placement plates 8. An electric telescopic rod is installed on the top of the device housing 1. The electric telescopic rod includes an electric telescopic rod control system. The device has an end 2 and an electric telescopic rod output end 3. The electric telescopic rod output end 3 passes through the top of the device housing 1, and the cutting device 13 passes through the bottom of the device housing 1. The top of the cutting device 13 is coaxially and fixedly connected to the electric telescopic rod output end 3. The purpose of this arrangement is to push the cutting device 13 to move together when the electric telescopic rod is started. The cutting device 13 has a first positioning rod 4 and a second positioning rod 15 on both sides. The first positioning rod 4 and the second positioning rod 15 pass through the bottom of the device housing 1. The cutting device 13, the first positioning rod 4 and the second positioning rod 15 are all slidably connected to the bottom of the device housing 1. This arrangement can ensure that the cutting device 13, the first positioning rod 4 and the second positioning rod 15 will not get stuck during the sliding process.

[0030] The cutting device 13 includes a fixed rod 131 and a first sliding rod 132. The side wall of the fixed rod 131 is provided with a sliding groove 136, and the bottom of the sliding groove 136 is provided with a plurality of positioning holes 137. The first sliding rod 132 is slidably connected in the sliding groove 136. A through hole is provided on the first sliding rod 132, and a positioning pin is slidably connected in the through hole. The purpose of this arrangement is that when the positioning pin is pulled out, the distance between the cutting blade 138 and the crossbar of the first sliding rod 132 can be adjusted by moving the first sliding rod 132 up and down, thereby meeting the needs of cutting paint buckets of different diameters.

[0031] Positioning clips 6 are fixedly connected to the bottom of both the first positioning rod 4 and the second positioning rod 15. These multiple positioning clips 6 are arranged in a semi-circular shape. This arrangement aims to fix the paint can 7 to the top of the placement plate 8 using multiple positioning clips 6, preventing the paint can 7 from moving during the cutting process and causing cutting failure. Both the first positioning rod 4 and the second positioning rod 15 have cavities, and each cavity is equipped with a limiting device. The limiting device includes a contact block 16, a second slot 17, and a second slide rod 18. The contact block 16 and the second slide rod 18 are coaxially fixedly connected. The second slot 17 is formed in the second slide rod 18. The top of the abutment block 16 is conical, and the bottom of the abutment block 16 is cylindrical. The second slide rod 18 slides through the top of the positioning clamp 6. When the paint bucket 7 is not clamped, the second slide rod 18 will slide out of the positioning clamp 6 due to gravity. When the first positioning rod 4 and the second positioning rod 15 move downward to clamp the paint bucket 7, the paint bucket 7 pushes the limiting device upward. When the tops of the multiple abutment blocks 16 move to the sliding holes on the side walls of the first positioning rod 4 and the second positioning rod 15 respectively, they begin to squeeze the first limiting rod 141 and the second limiting rod 143 respectively.

[0032] A fixing rod 131 is provided with a placement hole 133. A limiting rod 14 is slidably connected within the placement hole 133. The limiting rod 14 includes a first limiting rod 141, a spring 142, and a second limiting rod 143. The first limiting rod 141 and the second limiting rod 143 are connected by the spring 142. Sliding holes are provided on the opposite side walls of the first positioning rod 4 and the second positioning rod 15. The first limiting rod 141 passes through the sliding hole on the side wall of the first positioning rod 4 and communicates with the cavity. The second limiting rod 143 passes through the sliding hole on the side wall of the second positioning rod 15 and communicates with the cavity. The purpose of this arrangement is that when the tops of the multiple abutment blocks 16 move to the sliding holes on the side walls of the first positioning rod 4 and the second positioning rod 15 respectively, and begin to squeeze the first limiting rod 141 and the second limiting rod 143 respectively, the spring 142 begins to be compressed. At the same time, the first limiting rod 141 and the second limiting rod 143 respectively... The first positioning rod 4 and the second positioning rod 15 slide out of the sliding holes on the side walls. At this point, the cutting device 13 continues to be pressed downwards. The first positioning rod 4 and the second positioning rod 15 no longer move downwards, while the cutting device 13 continues to move downwards. When the cutting is completed, the cutting device 13 moves upwards. When the first limiting rod 141 and the second limiting rod 143 move to the sliding hole positions on the side walls of the first positioning rod 4 and the second positioning rod 15 respectively, the spring 142 releases the kinetic energy collected during compression, pushing the first limiting rod 141 and the second limiting rod 143, causing the first limiting rod 141 and the second limiting rod 143 to slide into the sliding holes on the side walls of the first positioning rod 4 and the second positioning rod 15 respectively. Subsequently, the first positioning rod 4 and the second positioning rod 15 move upwards synchronously with the cutting device 13. The fixing rod 131 has a first slot 135, and a rack 134 is provided on one side wall of the first slot 135. Figure 4The rack 134 shown is located on the side wall of the first slot 135 opposite to the slide 136, and the bottom of the fixing rod 131 is provided with a cutting blade 138, so that the paint can 7 can be cut.

[0033] The first slide bar 132 is L-shaped and includes a horizontal bar and a vertical bar. The horizontal bar is rotatably connected to a connecting rod 24. A support plate is provided at the end of the horizontal bar to support the connecting rod 24. This arrangement ensures that the angle between the connecting rod 24 and the first slide bar 132 is always between 0 and 90 degrees. This arrangement also ensures that the support plate supports the connecting rod 24 during the downward movement of the cutting device 13. When the connecting rod 24 contacts the paint can 7, it experiences an upward supporting force from the paint can 7 and rotates clockwise. When the horizontal bar continues downward to the lowest point, the connecting rod 24 loses its supporting force and resets under gravity. At this point, due to the support plate, the connecting rod 24 stops rotating downward when it reaches a horizontal position. When the cutting is completed and the blade is retracted, the connecting rod 24 is... Under the upward supporting force of the support plate, the connecting rod 24 will not rotate downward, ensuring that the connecting rod 24 remains in a horizontal state. A motor 25 is installed at the bottom of the connecting rod 24, and multiple transmission rods 26 are installed at the top of the connecting rod 24. The transmission rods 26 are rotatably connected to the top of the connecting rod 24. The motor 25 passes through the connecting rod 24 and is coaxially fixedly connected to one end of the transmission rod 26. With this configuration, when the motor 25 is started, the motor 25 drives the transmission rods 26 to rotate. The same transmission belt 27 is installed on the outer side of the multiple transmission rods 26. The outer wall of the transmission belt 27 is provided with a polishing material. With this configuration, when the motor 25 is started, the transmission belt 27 moves together. The polishing material on the outer wall of the transmission belt 27 can polish the cut during the upward movement of the connecting rod 24.

[0034] A first rotating rod 11 is provided through the first positioning rod 4. The first rotating rod 11 passes through the second slot 17 opened on the second sliding rod 18 in the first positioning rod 4. The purpose of this arrangement is that the first rotating rod 11 can move up and down together with the first positioning rod 4. The first rotating rod 11 is slidably connected in the second slot 17. The purpose of this arrangement is that the limiting device can move on the first rotating rod 11 to ensure the up and down movement of the limiting device. The first gear 20 and the second gear 21 are coaxially fixedly connected to both ends of the first rotating rod 11, respectively. The first gear 20 meshes with the rack 134 for transmission. The purpose of this arrangement is that when the first positioning rod 4 stops moving downward, the cutting device 13 continues to move downward, driving the rack 134 to move downward. The purpose of this arrangement is that the downward movement of the rack 134 drives the first gear 20 to rotate clockwise. A fixed outer shell 10 is provided on the outside of the first rotating rod 11. One end of the fixed outer shell 10 is fixedly connected to the side wall of the first rotating rod 11.

[0035] The fixed outer casing 10 includes a first horizontal tube, a vertical tube, and a second horizontal tube. The first horizontal tube is coaxially rotatably connected to the first rotating rod 11. A second rotating rod 12 is coaxially rotatably connected inside the vertical tube. Both ends of the second rotating rod 12 are provided with second gears 21, which are bevel gears. A third rotating rod 19 is coaxially rotatably connected inside the second horizontal tube. One end of the third rotating rod 19 is provided with a second gear 21. The second gear 21 at one end of the second rotating rod 12 meshes with the second gear 21 on the first rotating rod 11. The purpose of this arrangement is that when the first rotating rod 11 rotates clockwise, it drives the second rotating rod 12 to rotate counterclockwise in the vertical direction. The second gear 21 at the other end of the second rotating rod 12 meshes with the second gear 21 on the third rotating rod 19. The purpose of this arrangement is that when the second rotating rod 12 rotates counterclockwise in the vertical direction, it drives the third rotating rod 19 to rotate counterclockwise in the horizontal direction. When the cutting is completed and the blade is retracted, the rack 134 moves upward, causing the first gear 20 to rotate counterclockwise. As the first rotating rod 11 rotates counterclockwise, it causes the second rotating rod 12 to rotate clockwise in the vertical direction. When the second rotating rod 12 rotates clockwise in the vertical direction, it causes the third rotating rod 19 to rotate clockwise in the horizontal direction. This arrangement allows the rotation direction of the third rotating rod 19 to be controlled by raising and lowering the cutting device 13. When the cutting blade 138 just contacts the side wall of the paint bucket 7, the axis of the grinding block 23 is collinear with the axis of the paint bucket 7. This arrangement ensures that the grinding block 23 grinds the inner wall of the paint bucket 7.

[0036] The third rotating rod 19 is coaxially rotatably connected to a sleeve 22. The outer wall of the sleeve 22 has a threaded groove. The extension distance of the sleeve 22 can be controlled by adjusting the thread pitch; a smaller thread pitch results in a shorter extension length, and a larger thread pitch results in a longer extension length. A fixing block is provided on the inner wall of the end of the fixed housing 10. The fixing block slides within the threaded groove. This arrangement is intended to cause the sleeve 22 to slide outwards due to the squeezing action of the threaded groove sidewall when the third rotating rod 19 drives the sleeve 22 to rotate counterclockwise. A grinding block 23 is fixedly connected to the end of the sleeve 22. The grinding block 23 is connected to the fixed housing 10. The end 0 is a sliding connection. This design allows the polishing block 23 to move outward when the sleeve 22 slides outward, and to move inward when the sleeve 22 slides inward. The side wall of the third rotating rod 19 has a groove, and the inner wall of the sleeve 22 has a slider that slides within the groove. This design allows the sleeve 22 to rotate together with the third rotating rod 19, thereby driving the polishing block 23 to rotate. The rotation and extension / retraction of the polishing block 23 polishes the inner wall of the paint can. By cutting and polishing simultaneously, the time and effort required are not only solved, but the risk of the copper sleeve falling off is also reduced.

[0037] The working principle of this invention is as follows: When it is necessary to cut the paint bucket 7, the paint bucket 7 is placed on the placement plate 8, and the cutting point is located in the gap between multiple placement plates 8. As needed, the distance between the cutting blade 138 and the crossbar of the first sliding rod 132 is adjusted by moving the first sliding rod 132 up and down. The electric telescopic rod is activated, pushing the cutting device 13 downward. At this time, the first positioning rod 4 and the second positioning rod 15 move downward synchronously with the cutting device 13. When the positioning clamp clamps the paint bucket 7, the paint bucket 7 pushes the limiting device upward. When the tops of multiple abutment blocks 16 move to the sliding holes on the side walls of the first positioning rod 4 and the second positioning rod 15 respectively, they begin to squeeze the first limiting rod 141 and the second limiting rod 143 respectively. The spring 142 begins to be compressed. At the same time, the first limiting rod 141 and the second limiting rod 143 slide out of the sliding holes on the side walls of the first positioning rod 4 and the second positioning rod 15 respectively. At this time, the process continues. The cutting device 13 is pressed down, and as it continues to move downward, it drives the rack 134 to move downward. The downward movement of the rack 134 drives the first gear 20 to rotate clockwise. As the first rotating rod 11 rotates clockwise, it drives the second rotating rod 12 to rotate counterclockwise in the vertical direction. As the second rotating rod 12 rotates counterclockwise in the vertical direction, it drives the third rotating rod 19 to rotate counterclockwise in the horizontal direction. Since the sleeve 22 rotates together with the third rotating rod 19, the sleeve 22 slides outward due to the squeezing action of being fixed to the side wall of the threaded groove. At the same time, the sleeve 22 rotates. The inner wall of the paint bucket is polished by the rotation and extension of the polishing block 23 at the end of the sleeve 22. When the blade is retracted, the motor 25 is started and the transmission belt 27 moves together. The polishing material on the outer wall of the transmission belt 27 can polish the cut during the upward movement of the connecting rod 24.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rust-preventive paint spraying device for paint cans, comprising a device housing (1) and a plurality of placement plates (8), characterized in that, Each of the multiple placement plates (8) has multiple second support rods (9) at its four bottom corners. The device housing (1) and the multiple placement plates (8) are fixedly connected by multiple first support rods (5). The multiple first support rods (5) are evenly distributed at the four bottom corners of the device housing (1). The multiple placement plates (8) are placed horizontally and symmetrically without contacting each other. The top of the multiple placement plates (8) is provided with the same paint can (7). The top of the device housing (1) is provided with an electric telescopic rod. The electric telescopic rod includes an electric telescopic rod control end (2) and an electric telescopic rod output end (3). The output end (3) of the electric telescopic rod passes through the top of the device housing (1), and the bottom of the device housing (1) is provided with a cutting device (13). The top of the cutting device (13) is coaxially fixedly connected to the output end (3) of the electric telescopic rod. The cutting device (13) is provided with a first positioning rod (4) and a second positioning rod (15) on both sides. The first positioning rod (4) and the second positioning rod (15) pass through the bottom of the device housing (1). The cutting device (13), the first positioning rod (4) and the second positioning rod (15) are all slidably connected to the bottom of the device housing (1).

2. The anti-rust paint spraying device for paint buckets according to claim 1, characterized in that, The cutting device (13) includes a fixed rod (131) and a first sliding rod (132). The fixed rod (131) has a groove (136) on its side wall and a plurality of positioning holes (137) at the bottom of the groove (136). The first sliding rod (132) is slidably connected in the groove (136). The first sliding rod (132) has a through hole and a positioning pin is slidably connected in the through hole.

3. The anti-rust paint spraying device for paint buckets according to claim 1, characterized in that, The bottom of the first positioning rod (4) and the second positioning rod (15) are fixedly connected to positioning clips (6). The multiple positioning clips (6) are all semi-circular. The first positioning rod (4) and the second positioning rod (15) are all provided with cavities. Each cavity is provided with a limiting device. The limiting device includes a contact block (16), a second slot (17), and a second slide rod (18). The contact block (16) and the second slide rod (18) are coaxially fixedly connected. The second slot (17) is opened on the side wall of the second slide rod (18). The top of the contact block (16) is conical and the bottom of the contact block (16) is cylindrical. The second slide rod (18) slides through the top of the positioning clip (6).

4. The anti-rust paint spraying device for paint buckets according to claim 2, characterized in that, The fixing rod (131) is provided with a placement hole (133). A limiting rod (14) is slidably connected in the placement hole (133). The limiting rod (14) includes a first limiting rod (141), a spring (142), and a second limiting rod (143). The first limiting rod (141) and the second limiting rod (143) are connected by the spring (142). The first positioning rod (4) and the second positioning rod (15) are provided with sliding holes on their opposite sidewalls. The first limiting rod (141) passes through the sliding hole on the sidewall of the first positioning rod (4) and communicates with the cavity. The second limiting rod (143) passes through the sliding hole on the sidewall of the second positioning rod (15) and communicates with the cavity. The fixing rod (131) is provided with a first slot (135). A rack (134) is provided on one sidewall of the first slot (135). A cutting blade (138) is provided at the bottom of the fixing rod (131).

5. The anti-rust paint spraying device for paint buckets according to claim 2, characterized in that, The first slide bar (132) is L-shaped and includes a horizontal bar and a vertical bar. The horizontal bar is rotatably connected to a connecting rod (24). The end of the horizontal bar is provided with a support plate for supporting the connecting rod (24). The bottom of the connecting rod (24) is provided with a motor (25). The top of the connecting rod (24) is rotatably provided with multiple transmission rods (26). The motor (25) passes through the connecting rod (24) and is coaxially fixedly connected to one end of the transmission rod (26). The outer side of the multiple transmission rods (26) is provided with the same transmission belt (27). The outer wall of the transmission belt (27) is provided with a polished material.

6. The anti-rust paint spraying device for paint buckets according to claim 3, characterized in that, The first positioning rod (4) is provided with a first rotating rod (11) through it. The first rotating rod (11) passes through the second slot (17) opened on the second slide rod (18) in the first positioning rod (4). The first rotating rod (11) is slidably connected in the second slot (17). The first rotating rod (11) is coaxially fixedly connected with a first gear (20) and a second gear (21) at both ends. The first gear (20) meshes with the rack (134) for transmission. A fixed shell (10) is provided on the outside of the first rotating rod (11). One end of the fixed shell (10) is fixedly connected to the side wall of the first rotating rod (11).

7. The anti-rust paint spraying device for paint buckets according to claim 6, characterized in that, The fixed outer shell (10) includes a first horizontal tube, a vertical tube, and a second horizontal tube. The first horizontal tube is coaxially rotatably connected to the first rotating rod (11). A second rotating rod (12) is coaxially rotatably connected inside the vertical tube. A second gear (21) is provided at both ends of the second rotating rod (12). A third rotating rod (19) is coaxially rotatably connected inside the second horizontal tube. A second gear (21) is provided at one end of the third rotating rod (19). The second gear (21) at one end of the second rotating rod (12) meshes with the second gear (21) on the first rotating rod (11). The second gear (21) at the other end of the second rotating rod (12) meshes with the second gear (21) on the upper rotating rod (19). The second gear (21) is a bevel gear.

8. A rust-preventive paint spraying device for a paint bucket according to claim 6, characterized in that, The third rotating rod (19) is coaxially rotatably connected to a sleeve (22). The outer wall of the sleeve (22) is provided with a threaded groove. The inner wall of the fixed housing (10) is provided with a fixing block. The fixing block is slidably connected in the threaded groove. The end of the sleeve (22) is fixedly connected to a grinding block (23). The grinding block (23) is slidably connected to the end of the fixed housing (10). The side wall of the third rotating rod (19) is provided with a sliding groove. The inner wall of the sleeve (22) is provided with a slider. The slider is slidably connected in the sliding groove.