Surface passivation treatment equipment for automobile swing arm manufacturing
By using reciprocating motion components and an adjustable basket design, the problem of uneven passivation on the swing arm surface was solved, achieving uniformity and adaptability of the passivation film, thereby improving the corrosion resistance and production efficiency of the automotive swing arm.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JIAOTONG (WEIFANG) NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-05
AI Technical Summary
In existing automotive control arm surface passivation equipment, the static immersion of the control arm in the passivation solution leads to insufficient contact between different parts of the surface, resulting in uneven passivation film thickness and poor density, which affects corrosion resistance.
The reciprocating motion component drives the basket to move up and down in the passivation tank. Combined with the adjustable basket spacing design, it ensures that all parts of the swing arm are in uniform contact with the passivation liquid and is compatible with swing arms of different sizes.
It improves the uniformity and adaptability of passivation treatment, enhances the uniformity and corrosion resistance of the passivation film, and reduces low clamping efficiency and collision risk.
Smart Images
Figure CN224199475U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of passivation treatment technology, and in particular to a surface passivation treatment device for manufacturing automotive swing arms. Background Technology
[0002] In the automotive manufacturing industry, the surface passivation treatment quality of automotive control arms, as a key component, is crucial to the safety and durability of automobiles. Surface passivation treatment can effectively improve the corrosion resistance and oxidation resistance of automotive control arms and extend their service life. Therefore, the development of efficient and reliable surface passivation treatment equipment for automotive control arm manufacturing has become an important research direction for the automotive manufacturing industry to improve product quality and production efficiency.
[0003] Currently, existing automotive swing arm surface passivation equipment mainly adopts a fixed-station processing method in terms of structural design and working principle. The equipment usually consists of cleaning equipment, passivation tank, and transmission equipment. During the passivation process, the automotive swing arm is sent into the passivation tank and is statically immersed in the passivation liquid to carry out a chemical reaction. The contact between the passivation liquid and the surface of the swing arm is achieved by relying on the natural flow of the passivation liquid and the liquid flow driven by the stirring device. The cleaning equipment removes impurities by combining immersion and spraying. The reaction conditions in the passivation tank are controlled by heating and stirring devices.
[0004] However, this traditional fixed immersion passivation method has obvious shortcomings. Since the swing arm is in a static state in the passivation solution, it is difficult to ensure that all parts of the swing arm surface, especially the depressions and deep holes of complex structures, can fully and uniformly contact the fresh passivation solution, relying solely on the natural convection of the passivation solution and the limited flow generated by the stirring device. This results in insufficient passivation reaction in some areas, uneven thickness and poor density of the passivation film, which reduces the overall corrosion resistance of the automotive swing arm and affects product quality and service life. Therefore, a surface passivation treatment device for automotive swing arm manufacturing is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides a surface passivation treatment device for automobile control arm manufacturing, which aims to improve the problem in the prior art where automobile control arms are subjected to static immersion during passivation treatment, resulting in difficulty for various parts of the surface to fully and evenly contact with fresh passivation liquid, thus causing uneven passivation film thickness, poor density, and affecting corrosion resistance.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A surface passivation treatment device for manufacturing automotive control arms includes a passivation tank, a lifting frame fixedly connected to the outer wall of the passivation tank, and a reciprocating motion component disposed inside the passivation tank.
[0008] The reciprocating motion assembly includes a support frame, the bottom of which is fixedly connected to the upper surface of the lifting frame. A motor is fixedly connected to the top of the support frame, and a transmission column is fixedly connected to the output end of the motor. A connecting column is slidably connected to the outer wall of the transmission column, and a sloping groove is formed inside the connecting column. A sliding shaft is fixedly connected to the outer wall of the transmission column and slides inside the sloping groove. A fixing rod is fixedly connected to the bottom end of the connecting column, and multiple baskets are slidably connected inside the fixing rod. Multiple adjustment components are provided inside the fixing rod.
[0009] As a further description of the above technical solution:
[0010] The plurality of adjustment components include sliding blocks and fixed blocks, with one side of each sliding block fixedly connected to the side wall of the suspended basket, and the bottom of each fixed block fixedly connected to the upper surface of the sliding block.
[0011] As a further description of the above technical solution:
[0012] The sliding block is slidably connected inside the fixed rod, and a limit plate is fixedly connected inside the fixed block.
[0013] As a further description of the above technical solution:
[0014] The side wall of the limiting plate is fixedly connected to a symmetrical connecting shaft, and a sliding rod is slidably connected inside the connecting shaft.
[0015] As a further description of the above technical solution:
[0016] One end of the sliding rod is fixedly connected to a transmission disc, and a pull shaft is fixedly connected to the outer wall of the transmission disc. The pull shaft slides inside the fixed block.
[0017] As a further description of the above technical solution:
[0018] The fixed rod has multiple slots inside, and the sliding rod has a spring on its outer wall.
[0019] As a further description of the above technical solution:
[0020] One end of the spring is fixedly connected to the side wall of the transmission disc, and the other end is fixedly connected to the side wall of the limiting plate.
[0021] As a further description of the above technical solution:
[0022] A locking post is fixedly connected to one side of the transmission disc, and the locking post engages with the locking groove.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, the transmission column is driven to rotate by a motor. During the rotation of the transmission column, the sliding shaft will further slide inside the inclined groove. Since the inclined groove is inclined, the sliding shaft will drive the fixed rod to move up and down while sliding inside it, thereby achieving the effect of driving the car swing arm to move up and down. This solves the problem of insufficient contact of passivation liquid and poor passivation film quality caused by static immersion of the car swing arm, and improves the uniformity of passivation treatment.
[0025] 2. In this utility model, by simultaneously pressurizing two pull shafts, the pull shafts slide inside the fixed block, thereby further driving the sliding rod to contract inward towards the connecting shaft, compressing the spring, causing the spring to undergo elastic deformation, thereby driving the locking column to disengage from the slot to achieve unlocking. After unlocking, the operator can pull to adjust the up and down position of the basket, thereby achieving the effect of quickly adjusting the distance between the baskets. This solves the problem in the prior art that the fixed spacing between the baskets makes it difficult to adapt to different sizes of automotive swing arms, resulting in low clamping efficiency and easy collisions and scratches, and improves the equipment's adaptability to diverse workpieces. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of a surface passivation treatment device for manufacturing automotive control arms according to the present invention.
[0027] Figure 2 This is a schematic diagram of the side of the passivation pool of a surface passivation treatment device for manufacturing automobile control arms, as proposed in this utility model.
[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0029] Figure 4 This is a schematic diagram of the structure of the fixing rod of the surface passivation treatment equipment for manufacturing automobile swing arms proposed in this utility model;
[0030] Figure 5 This is a structural schematic diagram of the fixed rod cross-section of a surface passivation treatment device for manufacturing automotive swing arms proposed in this utility model;
[0031] Figure 6 for Figure 5 Enlarged view of point B in the middle.
[0032] Legend:
[0033] 1. Passivation tank; 2. Lifting frame; 3. Support frame; 4. Motor; 5. Transmission column; 6. Connecting column; 7. Inclined slide groove; 8. Sliding shaft; 9. Fixing rod; 10. Suspended basket; 11. Sliding block; 12. Fixing block; 13. Limiting plate; 14. Connecting shaft; 15. Sliding rod; 16. Transmission disc; 17. Pull shaft; 18. Spring; 19. Engaging column; 20. Slot. Detailed Implementation
[0034] 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.
[0035] Reference Figure 1 - Figure 3 An embodiment of this utility model provides a surface passivation treatment device for manufacturing automotive swing arms, including a passivation tank 1, which is mainly used to hold passivation liquid and complete the passivation process. Its outer wall is made of steel to ensure good corrosion resistance and strength. A lifting frame 2 is fixedly connected to the outer wall of the passivation tank 1. The lifting frame 2 can be moved vertically by electric lifting, which is convenient for taking out or putting in parts of different heights after passivation treatment. A reciprocating motion component is provided inside the passivation tank 1. The reciprocating component is used to drive the automotive swing arm to move up and down reciprocally.
[0036] The reciprocating motion assembly includes a support frame 3, the bottom of which is fixedly connected to the upper surface of the lifting frame 2. The support frame 3 provides stable support and connection within the reciprocating motion assembly. A motor 4 is fixedly connected to the top of the support frame 3, providing output power to the reciprocating assembly and ensuring stable movement. A transmission column 5 is fixedly connected to the output end of the motor 4, converting the rotational motion of the motor 4 into linear up-and-down motion and transmitting it to the connecting column 6, ensuring smooth transmission and preventing deviation during movement. The connecting column 6 is slidably connected to the outer wall of the transmission column 5. The connecting column 6 has an inclined slide groove 7 inside, which drives the connecting column 6 to move up and down. The transmission column 5 has a sliding shaft 8 fixedly connected to its outer wall. The sliding shaft 8 slides inside the inclined slide groove 7. The bottom end of the connecting column 6 is fixedly connected to a fixing rod 9. Multiple hanging baskets 10 are slidably connected inside the fixing rod 9. The hanging baskets 10 limit the movement of the car swing arm and prevent it from falling during the up and down movement. Multiple adjustment components are set inside the fixing rod 9. The adjustment components are used to adjust the distance between the hanging baskets 10, so that the user can adjust them according to different workpiece sizes.
[0037] Specifically, when addressing the issue of insufficient contact between the passivation solution and the surface of the swing arm, resulting in uneven passivation film quality due to static immersion of the workpiece in the existing automotive swing arm passivation process, and improving the uniformity and production efficiency of the passivation process, the operator first securely places the automotive swing arm inside the basket 10. Then, the lifting frame 2 drives the basket 10 to slowly immerse itself in the passivation solution in the passivation pool 1. To ensure the uniformity of the passivation process, the output end of the motor 4 drives the transmission column 5 to rotate. As the transmission column 5 rotates, the sliding shaft 8 slides up and down inside the inclined groove 7. Since the inclined groove 7 is inclined, this sliding causes the sliding shaft 8 to further drive the connecting column 6 to reciprocate up and down, thereby driving the basket 10 to float up and down in the passivation solution. This reciprocating motion ensures that every part of the automotive swing arm is evenly immersed in the passivation solution, thereby improving the uniformity of the passivation effect.
[0038] Reference Figure 4 - Figure 6 The adjustment components include sliding blocks 11 and fixed blocks 12. One side of each sliding block 11 is fixedly connected to the side wall of the suspended platform 10, and the bottom of each fixed block 12 is fixedly connected to the upper surface of the sliding block 11. The sliding blocks 11 and fixed blocks 12 provide stable support and connection for the adjustment components. The sliding blocks 11 are slidably connected inside the fixed rod 9. A limit plate 13 is fixedly connected inside the fixed block 12. The limit plate 13 compresses the spring 18, ensuring stable deformation of the spring 18. Symmetrical connecting shafts 14 are fixedly connected to the side wall of the limit plate 13. A sliding rod 15 is slidably connected inside the connecting shaft 14. One end of the sliding rod 15 is fixedly connected to a transmission disc 16. The outer wall of the transmission disc 16... A pull shaft 17 is fixedly connected. The function of the pull shaft 17 is to facilitate the user to quickly drive and adjust the movement of the component. The pull shaft 17 slides inside the fixed block 12. Multiple slots 20 are opened inside the fixed rod 9. A spring 18 is provided on the outer wall of the sliding rod 15. The function of the spring 18 is to provide a certain elastic support, so that the movement of the entire component is more stable, and to provide elastic restoring force for the locking column 19. One end of the spring 18 is fixedly connected to the side wall of the transmission plate 16, and the other end is fixedly connected to the side wall of the limiting plate 13. A locking column 19 is fixedly connected to one side of the transmission plate 16. The locking column 19 fits into the slot 20. This locking ensures the stability of the suspended basket 10 after adjustment and prevents positional deviation during movement.
[0039] Specifically, when faced with the need to passivate automotive swing arms of different sizes and shapes, and the existing fixed-spacing basket 10 is difficult to adapt, which can easily lead to inconvenient clamping, low space utilization, and the risk of workpiece collision, the operator first squeezes the two pull shafts 17, causing the two pull shafts 17 to slide synchronously in opposite directions inside the fixed block 12. The sliding action of the pull shafts 17 further pushes the transmission disc 16 to slide along the designated track. This action compresses the sliding rod 15, causing the sliding rod 15 to retract into the connecting shaft 14. When the sliding rod 15 and the connecting shaft 14 retract, the spring 18 will undergo elastic deformation due to compression, storing a certain amount of elastic potential energy. During this process, the sliding of the transmission disc 16 will also cause the locking pin 19 to disengage from the slot 20, successfully unlocking it. After unlocking, the operator can easily pull the basket 10 and adjust the distance between the baskets 10 by adjusting the sliding position of the sliding block 11 inside the fixed rod 9. This adjustment mechanism allows the basket 10 to be adapted to different sizes of car swing arms, ensuring that car swing arms of different specifications can be effectively and uniformly passivated in the passivation pool 1.
[0040] Working Principle: When using this surface passivation treatment equipment for automotive swing arm manufacturing, the vehicle swing arm is first placed inside the basket 10 by personnel. Then, the lifting frame 2 drives the basket 10 to be immersed in the passivation liquid inside the passivation tank 1. During the passivation process, the output end of the motor 4 drives the transmission column 5 to rotate. During the rotation of the transmission column 5, the sliding shaft 8 slides inside the inclined groove 7. Since the inclined groove 7 is inclined, when the sliding shaft 8 slides inside it, it will drive the connecting column 6 to move up and down, thereby further driving the basket 10 to move up and down in the passivation liquid. This ensures that every part of the automotive swing arm can be evenly immersed in the passivation liquid, ensuring the uniformity of the passivation of the automotive swing arm. When using car swing arms of different sizes, the operator first squeezes the two pull shafts 17, causing them to slide synchronously and in opposite directions inside the fixed block 12. The movement of the pull shafts 17 further drives the transmission plate 16 to slide, thereby squeezing the sliding rod 15 and causing it to contract towards the connecting shaft 14. The contraction of the sliding rod 15 and the connecting shaft 14 further drives the spring 18 to undergo elastic deformation, storing elastic potential energy. While the transmission plate 16 is moving, it also drives the locking column 19 to disengage from the slot 20 to unlock. After unlocking, the operator can directly pull the basket 10, causing the sliding block 11 to slide inside the fixed rod 9, adjusting the distance between the baskets 10 to adapt to different sizes of car swing arms.
[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.
Claims
1. A surface passivation treatment apparatus for manufacturing automotive control arms, comprising a passivation tank (1), characterized in that: The passivation tank (1) is fixedly connected to the outer wall of the lifting frame (2), and the passivation tank (1) is provided with a reciprocating motion component inside; The reciprocating motion assembly includes a support frame (3), the bottom of which is fixedly connected to the upper surface of the lifting frame (2), a motor (4) is fixedly connected to the top of the support frame (3), a transmission column (5) is fixedly connected to the output end of the motor (4), a connecting column (6) is slidably connected to the outer wall of the transmission column (5), an inclined groove (7) is provided inside the connecting column (6), a sliding shaft (8) is fixedly connected to the outer wall of the transmission column (5), the sliding shaft (8) slides inside the inclined groove (7), a fixing rod (9) is fixedly connected to the bottom end of the connecting column (6), a plurality of baskets (10) are slidably connected inside the fixing rod (9), and a plurality of adjustment components are provided inside the fixing rod (9).
2. The surface passivation treatment equipment for manufacturing automotive control arms according to claim 1, characterized in that: The plurality of adjustment components include a sliding block (11) and a fixing block (12). One side of the sliding block (11) is fixedly connected to the side wall of the basket (10), and the bottom of the fixing block (12) is fixedly connected to the upper surface of the sliding block (11).
3. The surface passivation treatment equipment for manufacturing automotive control arms according to claim 2, characterized in that: The sliding block (11) is slidably connected inside the fixed rod (9), and the fixed block (12) is fixedly connected to the limiting plate (13).
4. The surface passivation treatment equipment for manufacturing automotive control arms according to claim 3, characterized in that: The side wall of the limiting plate (13) is fixedly connected to a left-right symmetrical connecting shaft (14), and a sliding rod (15) is slidably connected inside the connecting shaft (14).
5. The surface passivation treatment equipment for manufacturing automotive control arms according to claim 4, characterized in that: One end of the sliding rod (15) is fixedly connected to a transmission disc (16), and a pull shaft (17) is fixedly connected to the outer wall of the transmission disc (16). The pull shaft (17) slides inside the fixed block (12).
6. The surface passivation treatment equipment for manufacturing automotive control arms according to claim 5, characterized in that: The fixed rod (9) has multiple slots (20) inside, and the sliding rod (15) has a spring (18) on its outer wall.
7. The surface passivation treatment equipment for manufacturing automotive control arms according to claim 6, characterized in that: One end of the spring (18) is fixedly connected to the side wall of the transmission disc (16), and the other end is fixedly connected to the side wall of the limiting plate (13).
8. The surface passivation treatment equipment for manufacturing automotive control arms according to claim 7, characterized in that: A locking post (19) is fixedly connected to one side of the transmission disc (16), and the locking post (19) fits into the slot (20).