Pre-cleaning equipment for double-color electrophoretic coating of automobile hub

Abstract

The utility model belongs to the technical field of hub machining, and particularly relates to pre-cleaning equipment for double-color electrophoretic coating of an automobile hub, which comprises a box body, U-shaped plates are fixedly mounted on the inner walls of two sides of the box body, the upper ends of the U-shaped plates extend to the upper part of the box body, and supporting springs are fixedly mounted on the inner bottom walls of the U-shaped plates; and arc-shaped blocks are fixedly mounted at the upper ends of the supporting springs, and a hub body is movably arranged in the box body. By arranging the U-shaped plates, the arc-shaped blocks and the U-shaped blocking pieces, the discs are directly placed on the inner sides of the U-shaped plates and the U-shaped blocking pieces by inserting the shaft holes of the hub bodies into the supporting rods, the hubs can be conveniently and vertically fixed in the box body, and by arranging the supporting springs, the fixing shafts and the rubber damping rollers, the hub bodies can be placed more stably; and meanwhile, the hub body can be conveniently rotated to be uniformly cleaned, so that the cleaning effect is improved, and the operation difficulty during cleaning is reduced.

Description

A pre-cleaning device for two-color electrophoretic coating of automobile wheel hubs Technical Field

[0001] This utility model relates to the field of wheel hub processing technology, specifically a pre-cleaning device for two-color electrophoretic coating of automobile wheel hubs. Background Technology

[0002] A wheel hub is the rotating part of the tire's inner rim steel connected to the wheel core by a column; it's the metal component that supports the tire and is mounted on the axle. It's also called a wheel rim, steel rim, wheel, or tire rim. Wheel hubs come in many varieties depending on their diameter, width, forming method, and materials. Currently, wheel hub production requires surface coating. Electrophoretic coating production lines offer high automation, adjustable and controllable paint film thickness, good corrosion resistance, high electrophoretic paint utilization, and low environmental pollution. Nearly 100% of automotive OEMs use electrophoretic coating for their car bodies, and the wheel hub industry is gradually adopting this approach. Two-color electrophoretic coating for automotive wheels utilizes existing two-color electrophoretic coating technology, effectively improving the aesthetic appearance of the wheel hub. Therefore, its use is becoming increasingly widespread. Because the wheel hub surface has an oxide film and becomes dirty during transportation and production, it's not suitable for direct electrophoretic coating. Therefore, pre-cleaning is necessary before two-color electrophoretic coating to ensure it meets the requirements.

[0003] Utility model CN213447344U discloses a pretreatment device for electrophoretic coating of automotive aluminum wheel hubs, including a base. A filter box is fixedly connected to the upper surface of the base, and a cleaning box is fixedly connected to the top of the filter box. An ultrasonic transducer is fixedly installed at the bottom inside the cleaning box, and an ultrasonic generator is fixedly installed on the upper surface of the ultrasonic transducer. A threaded rod is rotatably connected through the cleaning box above the ultrasonic generator. In this utility model, the rotation of the motor drives the brush to clean the surface impurities of the ultrasonic generator, thereby improving the performance of the ultrasonic generator. Wastewater enters the filter box through the drain pipe and is filtered by the first and second filter screens to obtain clean cleaning solution. The water pump pumps the filtered cleaning solution into the cleaning box through the output pipe, thereby achieving the effect of cleaning solution circulation, saving water resources, improving resource utilization efficiency, and reducing production costs.

[0004] Common wheel hubs typically weigh around 10 kilograms. Due to the setup of the filter and cleaning chambers in this pretreatment equipment, the opening at the top of the cleaning chamber is relatively high. Therefore, it's difficult to gently place the wheel hub inside the cleaning chamber without causing collisions with its internal structure, as collisions can easily damage the internal structure. Furthermore, when the wheel hub is laid flat, it adheres to the bottom of the cleaning chamber, making it difficult to separate impurities from the hub during cleaning. Placing the wheel hub vertically inside the cleaning chamber can cause it to roll, making cleaning wheel hubs with this pretreatment equipment quite troublesome. Therefore, we propose a pre-cleaning device for dual-color electrophoretic coating of automotive wheel hubs to solve these problems. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a pre-cleaning device for two-color electrophoretic coating of automobile wheel hubs, which solves the problems mentioned in the background art, such as the inconvenience of placing the wheel hubs into the device and the relatively troublesome cleaning process.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A pre-cleaning device for two-color electrophoretic coating of automotive wheel hubs includes a housing. U-shaped plates are fixedly installed on both inner walls of the housing. The upper ends of the U-shaped plates extend above the housing, and support springs are fixedly installed on their inner bottom walls. Arc-shaped blocks are fixedly installed at the upper ends of the support springs. A wheel hub body is movably disposed inside the housing. A shaft hole is formed in the middle of the wheel hub body, and a support rod movably passes through the shaft hole. Discs are fixedly installed at both ends of the support rod. The diameter of the discs is smaller than the diameter of the shaft hole but larger than the diameter of the support rod. The lower surface of the discs fits against the arc-shaped blocks. U-shaped baffles are fixedly installed on the ends of the U-shaped plates facing the wheel hub body. The width of the grooves on the U-shaped baffles is larger than the diameter of the support rod but smaller than the diameter of the discs. Symmetrical grooves are arranged between the two side walls of the housing, corresponding to the wheel hub body. The wheel hub has fixed shafts spaced equidistantly on its lower side. Rubber shock-absorbing rollers are rotatably mounted on each fixed shaft, and these rollers are in pressure contact with the lower surface of the wheel hub. An ultrasonic transducer is fixedly installed on one inner wall of the housing, and an ultrasonic generator is fixedly installed at one end of the transducer, with the output end of the ultrasonic generator facing the side of the wheel hub. An arc-shaped baffle is fixedly installed on one side of the housing's interior, and a sloped panel is fixedly installed at the bottom of the other inner side of the housing. A filter screen is fixedly installed between the bottom of the arc-shaped baffle and the top of the sloped panel. Drain pipes and sewage pipes are respectively fixedly connected to the two side walls of the housing. The drain pipe is located on the side of the filter screen facing the arc-shaped baffle, and the sewage pipe is located on the side of the filter screen facing the sloped panel. Valves are installed on both the drain pipe and the sewage pipe.

[0010] Furthermore, sliding holes are provided on both sides of the U-shaped plate, and T-shaped sliding rods are slidably connected in the sliding holes. One end of the T-shaped sliding rod is fixedly connected to the arc-shaped block.

[0011] Furthermore, a rotating shaft is rotatably connected between the two side walls of the housing, and a rubber drive roller is fixedly installed on the rotating shaft. The rubber drive roller is in pressure contact with the lower surface of the hub body. A motor is fixedly installed on one outer wall of the housing, and the drive end of the motor is fixedly connected to one end of the rotating shaft.

[0012] Furthermore, an inverted V-shaped plate arranged in a straight array is provided above the slope panel. Both ends of the inverted V-shaped plate are fixedly connected to the inner wall of the box. There are gaps between adjacent inverted V-shaped plates. The filter screen is located below the inverted V-shaped plate.

[0013] Furthermore, a water pump is fixedly installed at the bottom of the box. The water pump is located on the side of the filter screen facing the arc-shaped baffle. A water supply pipe is fixedly installed at the drain end of the water pump. The water supply pipe extends through the bottom of one side wall of the box to the outside of the box, and its end extends through the top of one side wall of the box to the top of the arc-shaped baffle.

[0014] Furthermore, a through hole is provided at the bottom of the U-shaped plate.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a pre-cleaning device for two-color electrophoretic coating of automobile wheel hubs, which has the following beneficial effects:

[0017] This invention, by setting up a U-shaped plate, an arc-shaped block, and a U-shaped baffle, allows the wheel hub body's shaft hole to be inserted into the support rod, and the disc to be directly placed inside the U-shaped plate and U-shaped baffle. This facilitates the vertical fixation of the wheel hub inside the housing. The inclusion of a support spring, a fixed shaft, and rubber shock-absorbing rollers further enhances the stability of the wheel hub body and facilitates its rotation, ensuring even cleaning and improving the cleaning effect while reducing operational difficulty. Attached Figure Description

[0018] Figure 1 is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 is a cross-sectional view of the internal structure of this utility model;

[0020] Figure 3 is a cross-sectional view of the internal structure of this utility model;

[0021] Figure 4 is a schematic diagram of the U-shaped plate structure of this utility model.

[0022] In the diagram: 1. Box body; 2. U-shaped plate; 3. Support spring; 4. Arc-shaped block; 5. Sliding hole; 6. T-shaped sliding rod; 7. Hub body; 701. Shaft hole; 8. Support rod; 9. Disc; 10. U-shaped baffle; 11. Fixed shaft; 12. Rubber shock-absorbing roller; 13. Rotating shaft; 14. Rubber drive roller; 15. Motor; 16. Ultrasonic transducer; 17. Ultrasonic generator; 18. Arc-shaped baffle; 19. Sloping panel; 20. Filter screen; 21. Inverted V-shaped plate; 22. Drain pipe; 23. Sewage pipe; 24. Water pump; 25. Water supply pipe; 26. Through hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] As shown in Figures 1, 2, 3, and 4, an embodiment of this utility model discloses a pre-cleaning device for two-color electrophoretic coating of automotive wheel hubs, comprising a housing 1. U-shaped plates 2 are fixedly installed on both inner walls of the housing 1. The upper ends of the U-shaped plates 2 extend above the housing 1, and a support spring 3 is fixedly installed on its inner bottom wall. An arc-shaped block 4 is fixedly installed on the upper end of the support spring 3. A wheel hub body 7 is movably arranged inside the housing 1. A shaft hole 701 is opened in the middle of the wheel hub body 7, and a support rod 8 movably passes through the shaft hole 701. Discs 9 are fixedly installed at both ends of the support rod 8. The diameter of the discs 9 is smaller than the diameter of the shaft hole 701 but larger than the diameter of the support rod 8. The lower surface of the discs 9 is in contact with the arc-shaped block 4. U-shaped baffles 10 are fixedly installed on the ends of the U-shaped plates 2 facing the wheel hub body 7. The width of the slots on the U-shaped baffles 10 is larger than the diameter of the support rod 8 but smaller than the diameter of the discs 9. Symmetrical arrangements are made between the two inner walls of the housing 1. A fixed shaft 11 is provided with a distance equal to the lower side of the hub body 7. Rubber damping rollers 12 are rotatably sleeved on the fixed shaft 11. The rubber damping rollers 12 are in pressure contact with the lower surface of the hub body 7. An ultrasonic transducer 16 is fixedly installed on one side inner wall of the housing 1. An ultrasonic generator 17 is fixedly installed at one end of the ultrasonic transducer 16. The output end of the ultrasonic generator 17 faces the side of the hub body 7. An arc-shaped baffle 18 is fixedly installed on one side inside the housing 1. A sloped panel 19 is fixedly installed at the bottom of the other side inside the housing 1. A filter screen 20 is fixedly installed between the bottom of the arc-shaped baffle 18 and the top of the sloped panel 19. A drain pipe 22 and a sewage pipe 23 are respectively connected and fixed to the two side walls of the housing 1. The drain pipe 22 is located on the side of the filter screen 20 facing the arc-shaped baffle 18. The sewage pipe 23 is located on the side of the filter screen 20 facing the sloped panel 19. Valves are provided on both the drain pipe 22 and the sewage pipe 23.In summary, due to the U-shaped plate 2 and U-shaped baffle 10, after inserting the support rod 8 into the shaft hole 701 of the wheel hub body 7, the discs 9 at both ends of the support rod 8 are inserted through the notches at the top of the U-shaped plate 2 and U-shaped baffle 10. This allows the support rod 8 to slide the wheel hub body 7 down along the slot of the U-shaped baffle 10 into the housing 1 for placement. Since the upper surface of the U-shaped plate 2 is fixedly connected to the arc-shaped block 4 by the support spring 3, and the housing 1 is equipped with a fixed shaft 11 and a rubber damping roller 12, during the downward movement of the wheel hub body 7, the discs 9 first contact the arc-shaped block 4, and the support spring 3 is compressed, slowing down the descent speed of the wheel hub body 7. The kinetic energy is converted into internal energy by the support spring 3. When the wheel hub body 7 contacts the rubber damping roller 12, the rubber damping roller 12 can absorb vibration and can cool the support spring 3. The system acts as a buffer, reducing shock and allowing the wheel hub 7 to be stably placed inside the housing 1. The ultrasonic cleaning structure, consisting of the ultrasonic transducer 16 and the ultrasonic generator 17, cleans the vertically placed wheel hub 7, removing impurities from its surface. During this process, the rotatable connection between the rubber damping roller 12 and the fixed shaft 11 allows the wheel hub 7 to rotate, facilitating the removal of surface impurities. The arc-shaped baffle 18, the sloped panel 19, and the filter screen 20 create a circulation chamber between the arc-shaped baffle 18, the filter screen 20, and the inner wall of the housing 1, preventing impurities from entering. Impurities settle on the sloped panel 19. Therefore, when the cleaning equipment needs to be emptied, simply opening the valves of the drain pipe 22 and the sewage pipe 23 allows for the discharge of internal wastewater and impurities.

[0026] As shown in Figure 4, in some embodiments, sliding holes 5 are provided on both sides of the U-shaped plate 2, and T-shaped sliding rods 6 are slidably connected in the sliding holes 5. One end of the T-shaped sliding rods 6 is fixedly connected to the arc block 4. Due to the setting of the sliding holes 5 and the T-shaped sliding rods 6, the arc block 4 can only move up and down inside the U-shaped plate 2, reducing the probability of the support spring 3 being damaged by tilting pressure.

[0027] As shown in Figures 2 and 3, in some embodiments, a rotating shaft 13 is rotatably connected between the two side walls of the housing 1. A rubber drive roller 14 is fixedly installed on the rotating shaft 13. The rubber drive roller 14 is in pressure contact with the lower surface of the wheel hub body 7. A motor 15 is fixedly installed on one outer wall of the housing 1. The drive end of the motor 15 is fixedly connected to one end of the rotating shaft 13. By setting the motor 15 to drive the rotating shaft 13 to rotate, the rotation of the rubber drive roller 14 can drive the wheel hub body 7 to rotate, which further facilitates the pre-cleaning of the wheel hub body 7.

[0028] As shown in Figures 2 and 3, in some embodiments, an inverted V-shaped plate 21 arranged in a straight array is provided above the slope panel 19. Both ends of the inverted V-shaped plate 21 are fixedly connected to the inner wall of the box 1. There are gaps between adjacent inverted V-shaped plates 21. The filter screen plate 20 is arranged below the inverted V-shaped plate 21. The arrangement of the inverted V-shaped plate 21 can reduce the probability that impurities falling on the slope panel 19 will flow to the top of the inverted V-shaped plate 21 after being impacted by the water flow.

[0029] As shown in Figure 2, in some embodiments, a water pump 24 is fixedly installed at the bottom of the inner side of the housing 1. The water pump 24 is located on the side of the filter screen 20 facing the arc-shaped baffle 18. A water supply pipe 25 is fixedly installed at the drain end of the water pump 24. The water supply pipe 25 extends through the bottom of one side wall of the housing 1 to the outside of the housing 1, and its end extends through the top of one side wall of the housing 1 to the top of the arc-shaped baffle 18. By setting the water pump 24 and the water supply pipe 25, the water inside the housing 1 can be made to continuously and repeatedly impact downwards, thereby driving the impurities mixed in the water to fall onto the slope panel 19 through the inverted V-shaped plate 21, reducing the impurities in the water around the hub body 7.

[0030] As shown in Figure 3, in some embodiments, a through hole 26 is provided at the bottom of the U-shaped plate 2; the through hole 26 is provided to prevent impurities from accumulating inside the groove formed by the U-shaped plate 2 and the U-shaped baffle 10.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pre-cleaning device for two-color electrophoretic coating of automobile wheel hubs, comprising a housing (1), characterized in that: U-shaped plates (2) are fixedly installed on both inner walls of the box (1). The upper end of the U-shaped plate (2) extends to the top of the box (1), and a support spring (3) is fixedly installed on its inner bottom wall. An arc-shaped block (4) is fixedly installed on the upper end of the support spring (3). A hub body (7) is movably arranged inside the box (1). A shaft hole (701) is opened in the middle of the hub body (7). A support rod (8) movably passes through the shaft hole (701). A disc (9) is fixedly installed at both ends of the support rod (8). The diameter of the disc (9) is smaller than the diameter of the shaft hole (701) and larger than the diameter of the support rod (8). The lower surface of the disc (9) is in contact with the arc block (4). U-shaped baffles (10) are fixedly installed on the end of the U-shaped plate (2) facing the hub body (7). The width of the slot opened on the U-shaped baffle (10) is larger than the diameter of the support rod (8) and smaller than the diameter of the disc (9). Fixed shafts (11) with equal spacing from the lower side of the hub body (7) are symmetrically arranged between the two side walls of the housing (1). Rubber damping rollers (12) are rotatably sleeved on the fixed shaft (11). The rubber damping rollers (12) are in pressure contact with the lower surface of the hub body (7). An ultrasonic transducer (16) is fixedly installed on one side of the inner wall of the housing (1). An ultrasonic generator (17) is fixedly installed at one end of the ultrasonic transducer (16). The output end of the ultrasonic generator (17) faces the side of the hub body (7). An arc-shaped baffle (18) is fixedly installed on one side of the inside of the housing (1). The bottom of the other side of the inside of the housing (1) A slope panel (19) is fixedly installed on the part. A filter screen (20) is fixedly installed between the bottom of the arc-shaped baffle (18) and the top of the slope panel (19). A drain pipe (22) and a sewage pipe (23) are respectively fixedly connected to the two side walls of the box (1). The drain pipe (22) is set on the side of the filter screen (20) facing the arc-shaped baffle (18), and the sewage pipe (23) is set on the side of the filter screen (20) facing the slope panel (19). Valves are provided on both the drain pipe (22) and the sewage pipe (23).

2. The pre-washing equipment for double-color electrophoretic coating of automobile wheel hub according to claim 1, characterized in that: The U-shaped plate (2) has sliding holes (5) on both sides. A T-shaped sliding rod (6) is slidably connected in the sliding hole (5). One end of the T-shaped sliding rod (6) is fixedly connected to the arc block (4).

3. The pre-washing equipment for double-color electrophoretic coating of automobile wheel hub according to claim 1, characterized in that: A rotating shaft (13) is rotatably connected between the two side walls of the housing (1). A rubber drive roller (14) is fixedly installed on the rotating shaft (13). The rubber drive roller (14) is in pressure contact with the lower surface of the hub body (7). A motor (15) is fixedly installed on one side outer wall of the housing (1). The drive end of the motor (15) is fixedly connected to one end of the rotating shaft (13).

4. The pre-washing equipment for double-color electrophoretic coating of automobile wheel hub according to claim 1, characterized in that: Above the slope panel (19) are inverted V-shaped plates (21) arranged in a straight array. Both ends of the inverted V-shaped plates (21) are fixedly connected to the inner wall of the box (1). There are gaps between adjacent inverted V-shaped plates (21). The filter screen (20) is located below the inverted V-shaped plates (21).

5. The pre-cleaning equipment for two-color electrophoretic coating of automobile wheel hubs according to claim 1, characterized in that: A water pump (24) is fixedly installed at the bottom of the box (1). The water pump (24) is located on the side of the filter screen (20) facing the arc-shaped baffle (18). A water supply pipe (25) is fixedly installed at the drain end of the water pump (24). The water supply pipe (25) extends through the bottom of one side wall of the box (1) to the outside of the box (1), and its end extends through the top of one side wall of the box (1) to the top of the arc-shaped baffle (18).

6. The pre-cleaning equipment for two-color electrophoretic coating of automobile wheel hubs according to claim 1, characterized in that: The bottom of the U-shaped plate (2) is provided with a through hole (26).

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