Projection welding tool for welding steering knuckle support of shock absorber

Abstract

The utility model discloses a projection welding tool for welding a steering knuckle support of a shock absorber. The projection welding tool comprises a rack. An upper cantilever and a lower cantilever which are oppositely distributed up and down are arranged on one side of the rack; an air cylinder is arranged on the upper cantilever, and an electrode is arranged on an output shaft of the air cylinder; the bottom face of the electrode is an arc-shaped face and used for being matched with the outer surface of an oil pipe support. A mounting hole is further formed in the electrode, and a magnet used for adsorbing the oil pipe support is arranged in the mounting hole; a projection welding frame is arranged on the lower cantilever, and a core rod used for installing a steering knuckle support is arranged on the projection welding frame. The air cylinder and the electrode are electrically connected with the controller. When the projection welding device is used, the oil pipe support and the steering knuckle support are fixed to the electrode and the core rod respectively, then the air cylinder drives the electrode to descend till the oil frame support makes contact with the surface of the steering knuckle support, the electrode is powered on, the oil pipe support can be welded to the steering knuckle support, and automatic projection welding of the steering knuckle support and the oil frame support is achieved. Welding efficiency is high, and labor cost is low.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber manufacturing technology, specifically to a projection welding fixture for welding shock absorber steering knuckle brackets. Background Technology

[0002] To accelerate the attenuation of vibrations between the chassis and body, and improve ride smoothness and comfort, most automobiles have shock absorbers installed within their suspension systems. These shock absorbers, by connecting the suspension system to the vehicle body, convert road impacts and vibrations into heat or mechanical energy to mitigate vibrations. In existing technology, during installation, the upper end of the shock absorber is fixed to the vehicle body via a strut top or upper support, while the lower end is connected to the wheel bearing and wheel hub via the steering knuckle. During shock absorber assembly, to avoid friction between the shock absorber and the brake lines or ABS sensor harness, these components need to be fixed in positions that do not interfere with wheel rotation and suspension movement. Therefore, some manufacturers typically include a steering knuckle bracket at the lower end of the shock absorber for connection to the steering knuckle, and a brake line bracket for securing the brake lines and ABS sensor harness. Currently, to improve assembly convenience, manufacturers often weld the brake line bracket to the steering knuckle bracket (e.g., ...). Figure 1 (as shown); In view of this, the inventors developed a special projection welding fixture for projection welding of steering knuckle brackets and oil pipe brackets. Utility Model Content

[0003] This utility model discloses a projection welding fixture for welding shock absorber steering knuckle brackets, comprising electrodes and a mandrel distributed vertically. The electrodes are connected to a cylinder and can move up and down under the drive of the cylinder. In use, the oil pipe bracket and the steering knuckle bracket are fixed on the electrodes and the mandrel respectively. Then, the cylinder drives the electrodes down to contact the surfaces of the oil pipe bracket and the steering knuckle bracket, and energizes the electrodes to weld the oil pipe bracket onto the steering knuckle bracket. This achieves automated projection welding of the steering knuckle bracket and the oil pipe bracket, with high welding efficiency, low labor costs, and high connection strength and good integration between the steering knuckle bracket and the oil pipe bracket after welding.

[0004] The technical solution of this application is as follows: a projection welding fixture for welding a shock absorber steering knuckle bracket, comprising a frame; an upper cantilever and a lower cantilever arranged vertically opposite each other on one side of the frame; a cylinder is provided on the upper cantilever, and an electrode is provided on the output shaft of the cylinder; the bottom surface of the electrode is an arc-shaped surface for mating with the outer surface of the oil pipe bracket; a mounting hole is also provided on the electrode, and a magnet for attracting the oil pipe bracket is provided in the mounting hole; a projection welding frame is provided on the lower cantilever, and a mandrel is provided on the projection welding frame; the mandrel is used to install the steering knuckle bracket; the cylinder and the electrode are electrically connected to a controller respectively.

[0005] Compared with the prior art, the projection welding fixture for welding the shock absorber steering knuckle bracket of this utility model includes electrodes and a mandrel distributed vertically. The electrodes are connected to a cylinder and can move up and down under the drive of the cylinder. In use, the oil pipe bracket is fixed on the electrode (the bottom surface of the electrode is an arc-shaped surface that matches the outer circumference of the oil pipe bracket, and the electrode is equipped with a magnet for attracting the oil pipe bracket, which makes the oil pipe bracket firmly installed and prevents it from falling off during welding). The steering knuckle bracket is sleeved on the mandrel (the size of the mandrel is smaller than the inner diameter of the steering knuckle bracket). Then, the cylinder drives the electrode to descend until the surfaces of the oil frame bracket and the steering knuckle bracket come into contact, and the electrode is energized to weld the oil pipe bracket to the steering knuckle bracket. This realizes automated projection welding of the steering knuckle bracket and the oil frame bracket, with high welding efficiency, low labor cost, and high connection strength and good integration between the steering knuckle bracket and the oil frame bracket after welding.

[0006] As an optimization, in the aforementioned projection welding fixture for welding the shock absorber steering knuckle bracket, a positioning frame is fitted around the outside of the electrode; the bottom of the positioning frame is equipped with a positioning post for positioning the oil pipe bracket. In use, the oil pipe bracket can be installed according to the position of the positioning post, thereby saving time spent adjusting the position of the oil pipe bracket and improving work efficiency. Furthermore, the electrode and the positioning frame can be fixed with pins. This results in a simple structure and convenient assembly and disassembly.

[0007] As an optimization, in the aforementioned projection welding fixture for welding the shock absorber steering knuckle bracket, the electrode is fixed to the mounting plate, and the mounting plate is connected to the output shaft of the cylinder via a connecting frame. The connecting frame includes an upper connecting plate, a lower connecting plate, and a connecting column disposed between the upper and lower connecting plates. The upper connecting plate is fixedly connected to the output shaft of the cylinder, and the lower connecting plate is fixedly connected to the mounting plate. The connection between the cylinder output shaft and the electrode is achieved through the connecting frame and the mounting plate, which is convenient for assembly and disassembly and has low implementation difficulty.

[0008] As an optimization, in the aforementioned projection welding fixture for welding the shock absorber steering knuckle bracket, a protective cover is provided on the outer side of the cylinder's output shaft, and the protective cover is fixed to the upper cantilever. The design of the protective cover can prevent external dust from entering the output shaft when the cylinder output shaft extends, thus avoiding affecting the extension and retraction of the output shaft.

[0009] As an optimization, in the aforementioned projection welding fixture for welding the shock absorber steering knuckle bracket, the projection welding frame is equipped with a positioning sleeve; one end of the mandrel is inserted into the positioning sleeve and connected to the projection welding frame via a key. This results in a simple connection structure and convenient installation. Furthermore, a support block is provided below the end of the mandrel; the support block is fixed to the slider of a pneumatic slide table; the pneumatic slide table is fixed to the projection welding frame and electrically connected to the controller. Thus, when welding the steering knuckle bracket and oil pipe bracket, the mandrel can be supported by the support block, preventing displacement of the mandrel position during welding, resulting in high reliability; moreover, the support block is located at the end of the mandrel, and after the steering knuckle bracket is fitted onto the mandrel, it can also limit the movement of the steering knuckle bracket. Furthermore, the projection welding frame is L-shaped, including a detachably connectable transverse mounting part and a longitudinal mounting part; the positioning sleeve is fixed to the longitudinal mounting part, and the pneumatic slide table is fixed to the transverse mounting part.

[0010] As an optimization, the aforementioned projection welding fixture for welding the shock absorber steering knuckle bracket includes an air tank at the top of the frame. This allows for direct air supply to the cylinder and pneumatic slide via the air tank, eliminating the need for a separate air tank and reducing space requirements. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the assembly of the oil pipe bracket and the steering knuckle bracket;

[0012] Figure 2 This is a schematic diagram of the projection welding fixture for welding the shock absorber steering knuckle bracket in the embodiments of this application;

[0013] Figure 3 This is a schematic diagram of the assembly of the cylinder and electrode in the embodiment of this application (with the two protective plates of the protective cover removed).

[0014] Figure 4 This is a schematic diagram of the electrode being fixed on the mounting plate in an embodiment of this application;

[0015] Figure 5 This is an assembly diagram of the mandrel and the projection welding frame in an embodiment of this application;

[0016] Figure 6 This is a schematic diagram of the oil pipe bracket and the steering knuckle bracket being installed on the projection welding fixture for welding the shock absorber steering knuckle bracket of this application.

[0017] The markings in the attached diagram are as follows: 1-Frame, 101-Upper cantilever, 102-Lower cantilever; 2-Cylinder; 3-Electrode, 301-Mounting hole, 302-Mounting groove; 4-Projection welding frame, 401-Transverse mounting part, 402-Vertical mounting part; 5-Core rod; 6-Controller; 7-Positioning frame, 701-Positioning column; 8-Mounting plate; 9-Connecting frame, 901-Upper connecting plate, 902-Lower connecting plate, 903-Connecting column; 10-Protective cover; 11-Positioning sleeve; 12-Support block; 13-Pneumatic slide; 14-Air tank; 15-Oil pipe bracket; 16-Steering knuckle bracket. Detailed Implementation

[0018] The present application will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present application.

[0019] Example:

[0020] See Figure 2 The projection welding fixture for welding the shock absorber steering knuckle bracket in this embodiment includes a frame 1; one side of the frame 1 is provided with an upper cantilever 101 and a lower cantilever 102 distributed vertically opposite each other; a cylinder 2 is provided on the upper cantilever 101, and an electrode 3 is provided on the output shaft of the cylinder 2; the bottom surface of the electrode 3 is an arc-shaped surface, used to mate with the outer surface of the oil pipe bracket 15 (in this embodiment, the oil pipe bracket 15 is provided with a protrusion, so an installation groove 302 that mates with the protrusion is opened on the arc-shaped surface); the electrode 3 is also provided with Mounting hole 301, wherein a magnet (not shown in the figure) is provided for adsorbing oil pipe bracket 15; a projection welding frame 4 is provided on the lower cantilever 102, and a mandrel 5 is provided on the projection welding frame 4; the mandrel 5 is used to install steering knuckle bracket 16 (the mandrel 5 needs to fit against the inner wall of steering knuckle bracket 16; in this embodiment, the diameter of the mandrel 6 is 0.5mm smaller than the inner diameter of steering knuckle bracket 16); the cylinder 2 and the electrode 3 are electrically connected to the controller 6 (the controller 6 is fixed on the frame 1 and located on the side of the cantilever).

[0021] In this embodiment, a positioning frame 7 is fitted around the outer side of the electrode 3; a positioning post 701 is provided on each of the two bottom sides of the positioning frame 7 for positioning the two sides of the oil pipe bracket 15. During use, the oil pipe bracket 15 is installed according to the position of the positioning post 701, which saves the time spent adjusting the position of the oil pipe bracket 15 (without positioning, the position of the oil pipe bracket 15 needs to be adjusted after installation so that the oil pipe bracket 15 can be directly fitted onto the steering knuckle bracket 16 after the electrode 3 is pressed down), improving work efficiency. Furthermore, the electrode 3 and the positioning frame 7 are fixed by pins. This results in a simple structure and convenient assembly / disassembly.

[0022] See Figure 3 and Figure 4 In this embodiment, the electrode 3 is fixed to the mounting plate 8, and the mounting plate 8 is connected to the output shaft of the cylinder 2 via a connecting frame 9. The connecting frame 9 includes an upper connecting plate 901, a lower connecting plate 902, and a connecting post 903 disposed between the upper connecting plate 901 and the lower connecting plate 902. The upper connecting plate 901 is fixedly connected to the output shaft of the cylinder 2, and the lower connecting plate 902 is fixedly connected to the mounting plate 8. The connection between the output shaft of the cylinder 2 and the electrode 3 is achieved through the connecting frame 9 and the mounting plate 8, which is convenient for disassembly and assembly and has low implementation difficulty.

[0023] In this embodiment, a protective cover 10 is provided on the outer side of the output shaft of the cylinder 2, and the protective cover 10 is fixed to the upper cantilever 101. This prevents external dust from entering the output shaft of the cylinder 2 and affecting its extension and retraction. The protective cover 10 is composed of four protective plates.

[0024] See Figure 5 In this embodiment, the projection welding frame 4 is L-shaped, including a transverse mounting portion 401 and a longitudinal mounting portion 402. The bottom of the longitudinal mounting portion 402 has a mounting protrusion that inserts into the mounting slot of the transverse mounting portion 401 and is fixed to the transverse mounting portion 401 by a pin. Furthermore, the longitudinal mounting portion 402 is provided with a positioning sleeve 11; one end of the mandrel 5 is inserted into the positioning sleeve 11 and connected to the projection welding frame 4 by a key; the positioning sleeve 11 is fixed to the longitudinal mounting portion 402 by a pin.

[0025] In this embodiment, a support block 12 is provided below the end of the mandrel 5; the support block 12 is fixed to the slider of the pneumatic slide table 13; the pneumatic slide table 13 is fixed to the transverse mounting part 401 and electrically connected to the controller 6. Therefore, when welding the steering knuckle bracket 16 and the oil pipe bracket 15, the mandrel 5 can be supported by the support block 12, preventing the mandrel 5 from shifting position during welding, thus ensuring high reliability; moreover, the support block 12 is located at the end of the mandrel 5, and after the steering knuckle bracket 16 is fitted onto the mandrel 5, the support block 12 can also limit the movement of the steering knuckle bracket 16. The bottom of the mandrel 5, at the position where it contacts the support block 12, is a flat surface.

[0026] In this embodiment, an air tank 14 is provided on the top of the frame 1. Therefore, air can be directly supplied to the cylinder 2 and the pneumatic slide 13 through this air tank 14, eliminating the need for a separate air tank and reducing space requirements.

[0027] In use, the protrusion on the oil pipe bracket 15 is inserted into the mounting groove 302 of the electrode 3. The outer side of the oil pipe bracket 15 mates with the arc-shaped surface on the electrode 3, and the magnet on the electrode 3 attracts the oil pipe bracket 15 (the two positioning posts 701 on the positioning frame 7 are located directly above the oil pipe bracket 15 on both sides, positioning the oil pipe bracket 15); the pneumatic slide 13 moves the support block 12 to disengage it from the mandrel 5, and then the steering knuckle bracket 16 is fitted onto the mandrel 5. Then the pneumatic slide 13 moves the support block 12 back to its original position to support the mandrel 5; after the oil pipe bracket 15 and the steering knuckle bracket 16 are installed (see...), Figure 6 The cylinder 2 drives the electrode 3 to descend to the surface of the oil pipe bracket 15 and the steering knuckle bracket 16, and energizes the electrode 3, thereby welding the oil pipe bracket 15 to the steering knuckle bracket 16 (the oil pipe bracket 15 has two protrusions pre-processed on it).

[0028] After welding is completed, the pneumatic slide 13 drives the support block 12 to move, so that it is disengaged from the mandrel 5, and then the steering knuckle bracket 16 can be removed.

[0029] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this application.

Claims

1. A projection welding fixture for welding shock absorber steering knuckle brackets, characterized in that: The system includes a frame (1); one side of the frame (1) is provided with an upper cantilever (101) and a lower cantilever (102) that are arranged vertically opposite to each other; a cylinder (2) is provided on the upper cantilever (101), and an electrode (3) is provided on the output shaft of the cylinder (2); the bottom surface of the electrode (3) is an arc-shaped surface, which is used to cooperate with the outer surface of the oil pipe support (15); the electrode (3) is also provided with a mounting hole (301), and a magnet for adsorbing the oil pipe support (15) is provided in the mounting hole (301); a projection welding frame (4) is provided on the lower cantilever (102), and a mandrel (5) is provided on the projection welding frame (4); the mandrel (5) is used to install a steering knuckle support (16); the cylinder (2) and the electrode (3) are electrically connected to the controller (6).

2. The projection welding fixture for welding the shock absorber steering knuckle bracket according to claim 1, characterized in that: The electrode (3) is fitted with a positioning frame (7) on its outer side; the bottom of the positioning frame (7) is provided with a positioning post (701) for positioning the oil pipe support (15).

3. The projection welding fixture for welding the shock absorber steering knuckle bracket according to claim 2, characterized in that: The electrode (3) is fixed to the positioning frame (7) by pins.

4. The projection welding fixture for welding the shock absorber steering knuckle bracket according to claim 2, characterized in that: The electrode (3) is fixed on the mounting plate (8), and the mounting plate (8) is connected to the output shaft of the cylinder (2) through the connecting bracket (9).

5. The projection welding fixture for welding the shock absorber steering knuckle bracket according to claim 4, characterized in that: The connecting frame (9) includes an upper connecting plate (901), a lower connecting plate (902), and a connecting column (903) disposed between the upper connecting plate (901) and the lower connecting plate (902); the upper connecting plate (901) is fixedly connected to the output shaft of the cylinder (2), and the lower connecting plate (902) is fixedly connected to the mounting plate (8).

6. The projection welding fixture for welding the shock absorber steering knuckle bracket according to claim 5, characterized in that: The output shaft of the cylinder (2) is provided with a protective cover (10), which is fixed on the upper cantilever (101).

7. The projection welding fixture for welding the shock absorber steering knuckle bracket according to claim 1, characterized in that: The projection welding frame (4) is provided with a positioning sleeve (11); one end of the mandrel (5) is inserted into the positioning sleeve (11) and connected to the projection welding frame (4) by a key.

8. The projection welding fixture for welding the shock absorber steering knuckle bracket according to claim 7, characterized in that: A support block (12) is provided below the end of the mandrel (5); the support block (12) is fixed on the slider of the pneumatic slide (13); the pneumatic slide (13) is fixed on the projection welding frame (4) and electrically connected to the controller (6).

9. The projection welding fixture for welding the shock absorber steering knuckle bracket according to claim 8, characterized in that: The projection welding frame (4) is L-shaped and includes a detachable transverse mounting part (401) and a longitudinal mounting part (402); the positioning sleeve (11) is fixed on the longitudinal mounting part (402), and the pneumatic slide (13) is fixed on the transverse mounting part (401).

10. The projection welding fixture for welding the shock absorber steering knuckle bracket according to claim 8, characterized in that: The top of the frame (1) is provided with an air storage tank (14).

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