Surface anti-corrosion treatment device for vehicle gear piece
By designing a corrosion protection device for automotive gear parts with multiple sets of annular wall tubes and staggered nozzles, combined with a transmission screw and main shaft motor drive, the problem of uneven spraying in the concave parts of the gear parts was solved, achieving all-round spraying and control of coating thickness, thus improving the corrosion resistance of the gear parts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DEQING LISHUN AUTO PARTS CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-05
AI Technical Summary
Existing technologies make it difficult to uniformly spray the concave areas of automotive gear components, especially traditional spraying machines, which cannot effectively spray the bottom of gear components and concave areas with special shapes.
A surface anti-corrosion treatment device for automotive gear components was designed. It employs multiple sets of annular wall tubes and staggered spray nozzles, combined with a transmission screw and a main shaft motor drive, to achieve all-round spraying of gear components at different angles and directions. The height of the gear components is adjusted by using threaded rotating blocks and limit blocks to ensure the comprehensiveness and uniformity of the sprayed coating.
It enables all-around spraying of gear components, especially effective spraying of concave areas, reducing paint waste, improving spraying uniformity and coating thickness control, and enhancing the corrosion resistance of gear components.
Smart Images

Figure CN224195025U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive metal parts surface treatment technology, specifically relating to a surface anti-corrosion treatment device for automotive gear parts. Background Technology
[0002] Automotive metal parts refer to the metal components used in automobile manufacturing. They serve functions such as structural support, transmission, heat dissipation, and safety protection, and are core components of vehicle performance and safety. Automotive gears are core components of the automotive transmission system, primarily used to transmit power, regulate speed and torque direction, and ensure smooth vehicle operation. Surface corrosion protection for gears includes coatings, electroplating, and heat treatment. Among these, applying powder coatings or paint to the surface of gears can effectively increase their hardness and corrosion resistance.
[0003] Domestic utility model patent application number 202321459246.6 discloses a spraying machine for processing gear coupling components, including a worktable. A protective cover is fixedly connected to the upper surface of the worktable. A groove is formed inside the protective cover. A slide rail is slidably connected to the inner wall of the groove. A slider is slidably connected to the outer wall of the slide rail. A fixing block is fixedly connected to the lower surface of the slider. A flow divider is fixedly connected to the lower surface of the fixing block. A nozzle is fixedly connected to the lower surface of the flow divider. A flexible hose is fixedly connected to one side of the outer wall of the fixing block, and a spray pipe is fixedly connected to one end of the flexible hose. In this utility model, the cooperation between the slide rail, the groove, and the slider achieves the effect of multi-angle spraying of paint by driving the flow divider. Furthermore, the cooperation between the connecting pipe and the spray pipe achieves uniform spraying, solving the problem of uneven spraying that traditional spraying machines may not be able to achieve. The above-mentioned utility model achieves the effect of driving the distribution plate to spray paint at multiple angles through the cooperation between the slide rail, slide groove and slider. Then, through the cooperation between the connecting pipe and the spray pipe, the effect of uniform spraying is achieved. However, the gear parts are all placed on the same horizontal hollow plate, making it impossible to spray the bottom of the parts. Moreover, during the spraying process, the gear parts are not easy to be uniformly sprayed due to their special shape and concave parts. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a surface anti-corrosion treatment device for automotive gear parts, including a base plate and a treatment tank fixedly installed on the top of the base plate. The bottom of the treatment tank is fixedly installed to the base plate by four sets of support frames. A top cover is installed on the top of the treatment tank by fixing bolts. A spraying mechanism is fixedly installed on the inner wall of the treatment tank. A positioning plate is welded and installed inside the treatment tank at the bottom position of the top cover. A transmission screw is installed between the bottom of the positioning plate and the bottom of the treatment tank. A main shaft motor for driving the transmission screw to rotate is fixedly installed at the bottom of the transmission screw at the bottom of the treatment tank. A rotating bearing mechanism is rotatably installed on the transmission screw, and a gear part is placed at the upper limit of the rotating bearing mechanism.
[0005] As a further preferred technical solution of this utility model, the spraying mechanism includes multiple sets of annular wall pipes installed on the inner wall of the processing tank, multiple sets of spray nozzles installed in pairs on the annular wall pipes, a connecting pipe that penetrates the processing tank and connects the annular wall pipes, and an input pipe that is connected to one side of the connecting pipe located at the top. The annular wall pipes are fixedly installed to the inner wall of the processing tank by multiple sets of fixing blocks. A solenoid valve is installed on the input pipe. The spray nozzles are installed at different positions on the annular wall pipes in an alternating manner.
[0006] The input pipe is connected to the pump that delivers the paint to be sprayed on the outer surface of the gear component. The paint delivered by the pump is transported from the input pipe to the inside of the annular pipe, and then the connecting pipe transfers the paint so that it is sprayed through each set of spray nozzles.
[0007] As a further preferred technical solution of this utility model, the rotating bearing mechanism includes a threaded rotating block that is threaded through the transmission screw, four sets of welded rods welded and installed around the outside of the threaded rotating block, and a bearing frame welded and installed at the end of the welded rods. Four sets of limiting blocks are fixedly installed on the top of the bearing frame.
[0008] During the rotation of the transmission screw driven by the main spindle motor, the threaded rotating block also rotates along with the transmission screw, and at the same time, it performs up and down transmission, so that the multiple sets of gears of different heights placed on the limit block are sprayed at different angles and directions.
[0009] As a further preferred technical solution of this utility model, a fixed housing is fixedly installed around the bottom of the processing tank outside the main spindle motor, and the output end of the main spindle motor passes through the processing tank and is fixedly connected to the transmission screw.
[0010] The transmission screw is driven to rotate by the main spindle motor, causing the transmission screw to rotate inside the processing tank.
[0011] As a further preferred technical solution of this utility model; the positioning plate and the inner wall of the processing tank are fixed by welding multiple sets of welding plates, the bottom of the positioning plate is connected and installed to the transmission screw through a fixed bearing seat, and the bottom of the processing tank is connected and installed with liquid guide pipes extending out of the processing tank on both sides of the transmission screw.
[0012] The liquid from the sprayed paint is discharged and recycled through a liquid guide tube, making it easier to reuse and reducing paint waste.
[0013] As a further preferred technical solution of this utility model, the limiting blocks have different heights, and the gear components are respectively positioned on the limiting blocks.
[0014] Different height limit blocks allow the gear components to be placed at different heights, reducing the chance of gear components in the same space blocking each other and affecting the spraying process.
[0015] Beneficial effects
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] 1. The input pipe is connected to the delivery pump for the coating material to be sprayed on the outer surface of the gear component. The coating material is delivered by the delivery pump and transported to the inside of the annular wall pipe through the input pipe. Then, the coating material is transferred through the connecting pipe and sprayed through each set of spray nozzles. The spray nozzles on different annular wall pipes are staggered, so that the spraying position of the spray nozzles is different, thereby increasing the all-round effect of the coating of the gear component.
[0018] 2. During the rotation of the main spindle motor-driven transmission screw, the threaded rotating block also rotates along with the transmission screw, and simultaneously performs up-and-down transmission, so that multiple sets of gears of different heights placed on the limit block are sprayed at different angles and directions. During this process, the tooth surfaces of the gears achieve the spraying effect according to different positions and different spray nozzles during rotation and transmission, avoiding the inconvenience of spraying concave areas due to the recessed tooth surface. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0021] Figure 3 This is a structural schematic diagram of the location of the rotating bearing mechanism of this utility model;
[0022] Figure 4 for Figure 2 A magnified structural diagram of point A in the middle.
[0023] In the diagram: 1. Base plate; 2. Processing tank; 21. Support frame; 22. Top cover; 23. Fixing block; 24. Fixed shell; 25. Liquid guide pipe; 26. Welding plate; 27. Positioning plate; 28. Fixed bearing seat; 3. Spraying mechanism; 31. Connecting pipe; 32. Input pipe; 33. Solenoid valve; 34. Annular wall pipe; 35. Spray nozzle; 4. Main shaft motor; 41. Transmission screw; 5. Rotating bearing mechanism; 51. Threaded rotating block; 52. Bearing frame; 53. Limiting block; 54. Welding rod; 6. Gear components. Detailed Implementation
[0024] This specific embodiment is a surface anti-corrosion treatment device for automotive gear parts.
[0025] The above-mentioned utility model achieves the effect of driving the distribution plate to spray paint at multiple angles through the cooperation between the slide rail, slide groove and slider. Then, through the cooperation between the connecting pipe and the spray pipe, the effect of uniform spraying is achieved. However, the gear parts are all placed on the same horizontal hollow plate, making it impossible to spray the bottom of the parts. Moreover, during the spraying process, the gear parts are not easy to be uniformly sprayed due to their special shape and concave parts.
[0026] Its structural diagram is as follows Figures 1-4 As shown. A surface anti-corrosion treatment device for automotive gear parts includes a base plate 1 and a treatment tank 2 fixedly installed on the top of the base plate 1. The bottom of the treatment tank 2 is fixedly installed to the base plate 1 by four sets of support frames 21. The top of the treatment tank 2 is connected to the top of the treatment tank 2 by fixing bolts. A spraying mechanism 3 is fixedly installed on the inner wall of the treatment tank 2. The spraying mechanism 3 includes multiple sets of annular wall pipes 34 installed on the inner wall of the treatment tank 2, multiple sets of spray nozzles 35 installed on the annular wall pipes 34, a connecting pipe 31 that penetrates the treatment tank 2 and connects the annular wall pipes 34, and an input pipe 32 that is connected to one side of the connecting pipe 31 located at the top. The annular wall pipes 34 are fixedly installed to the inner wall of the treatment tank 2 by multiple sets of fixing blocks 23. A solenoid valve 33 is installed on the input pipe 32. The spray nozzles 35 are installed at staggered positions on different annular wall pipes 34. The input pipe 32 is connected to the pump for spraying the coating material onto the outer surface of the gear component 6. The coating material can be an epoxy resin coating, which has strong adhesion and is resistant to oil and chemical corrosion. It can appropriately improve the mechanical strength of the gear component 6. The coating material, which is transported by the pump, is delivered to the inside of the annular wall pipe 34 through the input pipe 32. Then, the connecting pipe 31 transfers the coating material to each set of spray nozzles 35 for spraying. The spray nozzles 35 on different annular wall pipes 34 are staggered, so that the spraying position of the spray nozzles 35 is different, thereby increasing the all-round effect of spraying the gear component 6.
[0027] A positioning plate 27 is welded and installed inside the processing tank 2 at the bottom of the top cover 22. A transmission screw 41 is installed between the bottom of the positioning plate 27 and the bottom of the processing tank 2. A main shaft motor 4 for driving the transmission screw 41 is fixedly installed at the bottom of the processing tank 2. The positioning plate 27 and the inner wall of the processing tank 2 are welded and fixed together by multiple sets of welding plates 26. The bottom of the positioning plate 27 and the transmission screw 41 are connected and installed by a fixed bearing seat 28. Liquid guide pipes 25 extending out of the processing tank 2 are installed on both sides of the transmission screw 41 at the bottom of the processing tank 2. The liquid from the sprayed paint is discharged and recycled through the liquid guide pipes 25, facilitating its reuse and reducing paint waste. A fixed housing 24 is fixedly installed around the outside of the main shaft motor 4 at the bottom of the processing tank 2. The output end of the main shaft motor 4 passes through the processing tank 2 and is fixedly connected to the transmission screw 41. The transmission screw 41 is driven to rotate by the main shaft motor 4, and the transmission screw 41 rotates inside the processing tank 2 through the fixed bearing seat 28 installed on the top of the transmission screw 41.
[0028] A rotating bearing mechanism 5 is rotatably mounted on the transmission lead screw 41, and a gear component 6 is placed at the upper limit of the rotating bearing mechanism 5. The rotating bearing mechanism 5 includes a threaded rotating block 51 that is threaded through the transmission lead screw 41, four sets of welded rods 54 welded to the outside of the threaded rotating block 51, and a bearing frame 52 welded to the end of the welded rods 54. Four sets of limit blocks 53 are fixedly mounted on the top of the bearing frame 52. During the rotation of the main spindle motor 4 and the transmission screw 41, the threaded rotating block 51 also rotates along with the transmission screw 41, and simultaneously performs up-and-down transmission. This allows multiple sets of gears 6 at different heights placed on the limiting block 53 to be sprayed at different angles and directions. The driving force of the main spindle motor 4 is controlled according to the required coating thickness of the gears 6 to be sprayed, thereby adjusting the transmission speed of the threaded rotating block 51. This ensures that the coating thickness of the gears 6 is within the specified range, guaranteeing comprehensive spraying of the gears 6. Furthermore, during this process, the tooth surfaces of the gears 6 achieve the desired spraying effect based on their different positions and the spraying range of the different spray nozzles 35 during rotation and transmission, avoiding the inconvenience of spraying concave areas due to recessed tooth surfaces. The limiting blocks 53 have different heights, and the gears 6 are positioned on the limiting blocks 53 respectively. The different heights of the limiting blocks 53 ensure that the gears 6 are positioned at different heights, reducing the possibility of gears 6 blocking each other in the same space and affecting the spraying process.
[0029] The top cover 22 is disassembled, and the drive screw 41 is rotated. When the threaded rotating block 51 rises to the top of the drive screw 41, the gear 6 is placed and installed. After placement, the top cover 22 is installed. The drive screw 41 is driven to rotate by the main shaft motor 4. The fixed bearing seat 28 installed on the top of the drive screw 41 causes the drive screw 41 to rotate inside the processing tank 2. During the rotation of the drive screw 41 by the main shaft motor 4, the threaded rotating block 51 also rotates with the drive screw 41, and moves up and down simultaneously. The movement causes multiple sets of gear components 6 at different heights placed on the limiting block 53 to be sprayed at different angles and directions. The input pipe 32 is connected to the delivery pump for the paint to be sprayed on the outer surface of the gear component 6. The paint delivered by the delivery pump is transported from the input pipe 32 to the inside of the annular wall pipe 34, and then the connecting pipe 31 transmits the paint so that it is sprayed through each set of spray nozzles 35. The spray nozzles 35 on different annular wall pipes 34 are staggered so that the spraying position of the spray nozzles 35 is different, thereby increasing the all-round effect of spraying the gear component 6.
[0030] All technical features in this embodiment can be freely combined according to actual needs.
[0031] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. A surface anti-corrosion treatment device for automotive gear parts, comprising a base plate (1) and a treatment tank (2) fixedly installed on the top of the base plate (1), wherein the bottom of the treatment tank (2) is fixedly installed to the base plate (1) by four sets of support frames (21), characterized in that, The top of the treatment tank (2) is fitted with a top cover (22) by fixing bolts. A spraying mechanism (3) is fixedly installed on the inner wall of the treatment tank (2). A positioning plate (27) is welded and installed inside the treatment tank (2) at the bottom of the top cover (22). A transmission screw (41) is installed between the bottom of the positioning plate (27) and the bottom of the treatment tank (2). A main shaft motor (4) for driving the transmission screw (41) to rotate is fixedly installed at the bottom of the treatment tank (2). A rotating bearing mechanism (5) is rotatably installed on the transmission screw (41), and a gear (6) is placed at the upper limit of the rotating bearing mechanism (5).
2. The anti-corrosion treatment device for automotive gear components according to claim 1, characterized in that: The spraying mechanism (3) includes multiple sets of annular wall tubes (34) installed on the inner wall of the treatment tank (2), multiple sets of spray nozzles (35) installed on the annular wall tubes (34), a connecting pipe (31) that penetrates the treatment tank (2) and connects the annular wall tubes (34) to each other, and an input pipe (32) that is connected to one side of the connecting pipe (31) located at the top. The annular wall tubes (34) are fixedly installed to the inner wall of the treatment tank (2) by multiple sets of fixing blocks (23). A solenoid valve (33) is installed on the input pipe (32). The spray nozzles (35) are staggered in their installation positions on different annular wall tubes (34).
3. The anti-corrosion treatment device for automotive gear components according to claim 1, characterized in that: The rotating bearing mechanism (5) includes a threaded rotating block (51) threaded through the transmission screw (41), four sets of welded rods (54) welded to the outside of the threaded rotating block (51), and a bearing frame (52) welded to the end of the welded rods (54). Four sets of limiting blocks (53) are fixedly installed on the top of the bearing frame (52).
4. The anti-corrosion treatment device for automotive gear components according to claim 1, characterized in that: The bottom of the processing tank (2) is fixedly installed around the outside of the main spindle motor (4) with a fixed housing (24). The output end of the main spindle motor (4) passes through the processing tank (2) and is fixedly connected to the transmission screw (41).
5. The anti-corrosion treatment device for automotive gear components according to claim 1, characterized in that: The positioning plate (27) and the inner wall of the processing tank (2) are welded and fixed together by multiple sets of welding plates (26). The bottom of the positioning plate (27) is connected and installed to the transmission screw (41) through a fixed bearing seat (28). The bottom of the processing tank (2) is connected and installed with liquid guide pipes (25) extending out of the processing tank (2) on both sides of the transmission screw (41).
6. The anti-corrosion treatment device for automotive gear components according to claim 3, characterized in that: The heights of the limiting blocks (53) are different, and the gear components (6) are respectively positioned on the limiting blocks (53).
Citation Information
Patent Citations
Spraying machine for machining gear coupling part
CN220215407U