Automobile shock absorber bottom valve press riveting assembly

Abstract

The invention discloses an automobile shock absorber bottom valve press riveting assembly which comprises a rotating crawler belt assembly and valve bodies, the multiple valve bodies are placed at the upper end of the rotating crawler belt assembly at equal intervals, rivets on a rivet placing frame fall to the lower end of a bit beak cylinder, whether the rivets are aligned with the bit beak cylinder or not is detected through a sensor, then the bit beak cylinder descends, and the rivet placing frame is driven to rotate. The servo press descends to extrude the rivet into a rivet mounting groove formed in the valve body, the lower end of the valve body is fixed through an air buffer piston, an ejector pin in a pen-shaped air cylinder ejects upwards to extrude an air cylinder supporting piston, and the rivet extending out of the lower end of the valve body is extruded by the air cylinder supporting piston to crumple so as to be closed and fixed. And the stability of rivet fixing can be improved in a manner of squeezing up and down together, and the situation that the rivet and the valve body are not firmly fixed due to gaps caused by incomplete collapse of the rivet at the lower end due to single squeezing at the upper end is avoided, so that the production efficiency of the valve body is improved, and the yield of production is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field related to automobile accessories, and in particular relates to the riveting assembly of a bottom valve of an automobile shock absorber. Background Art

[0002] Shock absorber Automobile shock absorber is actually a vibration damper. Shock absorber is not only used in suspension in automobiles, but also in other locations, such as in cabs, seats, steering wheels, etc. It can also be used as a buffer on vehicle bumpers. Shock absorbers are assembled from multiple parts, and the shock absorber bottom valve is produced by assembly line stamping. However, the existing bottom valve production line cannot achieve precise pressing when stamping the bottom valve, resulting in an unstable combination of the rivet and the bottom valve, which makes the quality control unable to meet the standards and reduces the yield rate. Summary of the invention

[0003] The purpose of the present invention is to provide a bottom valve press-riveted assembly for an automobile shock absorber, so as to solve the problem proposed in the above background technology that the existing bottom valve production line cannot achieve accurate pressing when stamping the bottom valve, resulting in an unstable combination of the rivet and the bottom valve, thereby resulting in quality control failing to meet standards and resulting in a reduced yield rate.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A bottom valve of an automobile shock absorber is press-riveted and assembled, comprising a rotating track assembly and a valve body;

[0005] A plurality of valve bodies are equidistantly arranged on the upper end of the rotating crawler assembly;

[0006] A plurality of supporting legs are provided at the lower end of the rotating crawler assembly;

[0007] A support frame is provided on the right front side of the rotating crawler assembly;

[0008] Two servo presses are arranged at the upper end of the support frame;

[0009] A rivet bit is provided on the lower side of the two servo presses;

[0010] An auxiliary punching device is provided at the bottom end of the inner wall of the support frame;

[0011] A fixing frame is arranged at the bottom end of the inner wall of the support frame, and two cylinder bodies are embedded in the upper end of the inner wall of the fixing frame. Pen-shaped cylinders are arranged at the bottom ends of the two cylinder bodies, and cylinder supporting pistons are arranged on the upper sides of the two pen-shaped cylinders. The ejector pin inside the pen-shaped cylinder is used to push the cylinder supporting piston to extrude the rivet.

[0012] Preferably, a piston limit block is provided at the bottom end of the inner wall of the cylinder body, a hydraulic piston is provided on the upper side of the piston limit block on the inner wall of the cylinder body, and a hydraulic joint is provided on the lower side of the outer wall at the right end of the cylinder body. The hydraulic joint is used to connect the oil pipe to apply pressure to the cylinder body to drive the hydraulic piston to move.

[0013] Preferably, an air buffer piston is arranged on the upper side of the outer wall of the hydraulic piston, and an air pipe joint is arranged on the upper side of the outer wall of the right end of the cylinder body, and the air pipe joint is used to apply air pressure to the inside of the cylinder to control the up and down movement of the air buffer piston.

[0014] Preferably, the cylinder supporting piston is installed on the upper side of the inner wall of the hydraulic piston, and two rivet placing racks are provided at the upper end of the fixing frame, and the rivet placing racks are used to place pre-installed rivets.

[0015] Preferably, a rivet feeder is provided on the right front side of the support frame, and the rivet feeder is used to store rivets. A reinforcement plate is laid at the middle position of the upper end of the rotating track assembly, and the reinforcement plate is used to reinforce the rotating track assembly and install production auxiliary devices.

[0016] Preferably, the two servo presses are fixedly connected to the rivet bit via a pressing shaft, a floating joint is provided between the servo press and the pressing shaft, and the pressing shaft is fixedly connected to the servo press via the floating joint.

[0017] Preferably, a sensor is arranged on the left side of the servo press, and a screwdriver bit bird's beak cylinder is arranged on the right side of the servo press, and the screwdriver bit bird's beak cylinder is used to fix rivets.

[0018] Preferably, a lower frame is provided at the lower end of the screwdriver bit bird beak cylinder, and a lower cylinder is provided on the left side of the lower frame, and the lower cylinder is used to control the up and down movement of the lower frame.

[0019] Compared with the prior art, the present invention provides a pressure-riveted assembly of a bottom valve of an automobile shock absorber, which has the following beneficial effects:

[0020] The valve body is rotated to the lower side of the servo press by the rotating track assembly, and the product is pressed down by the lower cylinder. The rivets on the rivet display rack fall to the lower end of the screwdriver bird's beak cylinder. The sensor detects whether the rivet is aligned with the screwdriver bird's beak cylinder. Then the screwdriver bird's beak cylinder descends, and the servo press descends to squeeze the rivet into the rivet mounting groove opened in the valve body. The lower end of the valve body is fixed by the air buffer piston, and the cylinder support piston is squeezed upward by the ejector pin in the pen-shaped cylinder, so that the rivet extending from the lower end of the valve body is squeezed by the cylinder support piston to collapse and thus closed and fixed. The stability of the rivet fixation can be increased by squeezing the upper and lower parts together, avoiding the situation where the rivet at the lower end is not firmly fixed to the valve body due to incomplete collapse of the rivet at the upper end due to a gap caused by the single extrusion of the upper end, thereby increasing the efficiency of the valve body production and improving the yield rate of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic diagram of the compression riveting assembly structure of the bottom valve of the automobile shock absorber.

[0022] Figure 2 It is a schematic diagram of the front-end planar structure of the connection between the support frame and the servo press of the present invention.

[0023] Figure 3 It is a schematic diagram of the support frame structure of the present invention.

[0024] Figure 4 It is a schematic structural diagram of the auxiliary punching device of the present invention.

[0025] Figure 5 It is a schematic diagram of the left end planar structure of the auxiliary punching device of the present invention.

[0026] Figure 6 It is a schematic diagram of the detailed structure of the cylinder body of the present invention.

[0027] Figure 7 It is a schematic diagram of the planed surface structure of the left end of the cylinder body of the present invention.

[0028] In the figure: 1. Auxiliary punching device; 2. Support frame; 3. Support leg; 4. Valve body; 5. Rotating crawler assembly; 6. Reinforcement plate; 7. Servo press; 8. Rivet feeder; 9. Rivet bit; 10. Sensor; 11. Floating joint; 12. Press shaft; 13. Bit bird-mouth cylinder; 14. Lower frame; 15. Lower cylinder; 16. Fixed frame; 17. Rivet display rack; 18. Cylinder body; 19. Hydraulic joint; 20. Air buffer piston; 21. Cylinder support piston; 22. Pen-shaped cylinder; 23. Hydraulic piston limit block; 24. Hydraulic piston; 25. Air pipe joint. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The present invention provides Figure 1-7 The bottom valve of the automobile shock absorber shown in the figure is riveted and assembled, and comprises a rotating track assembly 5 and a valve body 4;

[0031] A plurality of valve bodies 4 are evenly spaced on the upper end of the rotating crawler assembly 5;

[0032] A plurality of supporting legs 3 are provided at the lower end of the rotating crawler assembly 5;

[0033] A support frame 2 is provided on the right front side of the rotating crawler assembly 5;

[0034] Two servo presses 7 are provided at the upper end of the support frame 2;

[0035] A rivet bit 9 is provided on the lower side of the two servo presses 7;

[0036] An auxiliary punching device 1 is provided at the bottom end of the inner wall of the support frame 2;

[0037] A fixing frame 16 is provided at the bottom end of the inner wall of the support frame 2, and two cylinder bodies 18 are embedded at the upper end of the inner wall of the fixing frame 16. A pen-shaped cylinder 22 is provided at the bottom end of the two cylinder bodies 18, and a cylinder support piston 21 is provided on the upper side of the two pen-shaped cylinders 22. The internal ejector of the pen-shaped cylinder 22 is used to push the cylinder support piston 21 to squeeze the rivet. When the rotating track assembly 5 rotates the valve body 4 to the lower side of the servo press 7, the servo press 7 drives the rivet bit 9 to press down, and the ejector inside the pen-shaped cylinder 22 pushes the cylinder support piston 21 upward to squeeze the rivet extending from the lower end of the valve body 4. The rivet is squeezed by the ejector and collapses through the shape of the end.

[0038] like Figure 6 and Figure 7 As shown, a piston limit block 23 is provided at the bottom end of the inner wall of the cylinder body 18, a hydraulic piston 24 is provided on the upper side of the piston limit block 23 on the inner wall of the cylinder body 18, a hydraulic joint 19 is provided on the lower side of the outer wall of the right end of the cylinder body 18, the hydraulic joint 19 is used to connect the oil pipe to apply pressure to the cylinder body 18 to drive the hydraulic piston 24 to move, an air buffer piston 20 is provided on the upper side of the outer wall of the hydraulic piston 24, an air pipe joint 25 is provided on the upper side of the outer wall of the right end of the cylinder body 18, the air pipe joint 25 is used to apply air pressure to the inside of the cylinder to control the up and down movement of the air buffer piston 20, the cylinder support piston 21 is installed on the upper side of the inner wall of the hydraulic piston 24, and two rivet display racks 17 are provided on the upper end of the fixing frame 16, and the rivet display rack 17 is used to place pre-installed rivets A rivet feeder 8 is arranged on the right front side of the support frame 2, and the rivet feeder 8 is used to store rivets. A reinforcement plate 6 is laid in the middle position of the upper end of the rotating track assembly 5, and the reinforcement plate 6 is used to reinforce the rotating track assembly 5 and install production auxiliary devices. When the valve body 4 reaches the upper end of the cylinder body 18, the air pipe joint 25 applies pressure to the air buffer piston 20 to make the air buffer piston 20 rise, and the bottom end of the valve body 4 is fixed by the air buffer piston 20. The hydraulic joint 19 applies pressure to the hydraulic piston 24 to make the hydraulic piston 24 rise to the top and be flush with the top of the air buffer piston 20. Pressing the rivets through this work flow can prevent the rivets from shifting when being squeezed, and complete the entire bottom valve pressure riveting assembly, thereby ensuring the consistency and quality of each product.

[0039] like Figure 2 and Figure 3As shown, two servo presses 7 are connected and fixed to the rivet bit 9 through a pressing shaft 12, a floating joint 11 is provided between the servo press 7 and the pressing shaft 12, the pressing shaft 12 is fixedly connected to the servo press 7 through the floating joint 11, a sensor 10 is provided on the left side of the servo press 7, a bit bird mouth cylinder 13 is provided on the right side of the servo press 7, the bit bird mouth cylinder 13 is used to fix the rivet, a lower frame 14 is provided at the lower end of the bit bird mouth cylinder 13, and a lower frame 14 is provided on the left side A lower cylinder 15 is provided, and the lower cylinder 15 is used to control the lower frame 14 to move up and down. When the valve body 4 reaches the lower side of the servo press 7, the lower cylinder 15 drives the lower frame 14 to press down the valve body 4, and the rivet falls to the lower side of the screwdriver head bird's beak cylinder 13. The sensor 10 detects whether the rivet enters the lower side of the screwdriver head bird's beak cylinder 13. The screwdriver head bird's beak cylinder 13 descends, and the rivet is at the bird's beak clamping flap. The servo press 7 descends, and the rivet is pushed into the rivet installation space of the valve body 4.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bottom valve of an automobile shock absorber is assembled by riveting, comprising a rotating track assembly (5) and a valve body (4); A plurality of valve bodies (4) are arranged at equal intervals on the upper end of the rotating crawler assembly (5); A plurality of supporting legs (3) are provided at the lower end of the rotating crawler assembly (5); A support frame (2) is provided on the right front side of the rotating crawler assembly (5); Two servo presses (7) are arranged at the upper end of the support frame (2); A rivet bit (9) is provided on the lower side of the two servo presses (7); An auxiliary punching device (1) is provided at the bottom end of the inner wall of the support frame (2); Features: A fixing frame (16) is arranged at the bottom end of the inner wall of the support frame (2); two cylinder bodies (18) are embedded in the upper end of the inner wall of the fixing frame (16); pen-shaped cylinders (22) are arranged at the bottom ends of the two cylinder bodies (18); cylinder support pistons (21) are arranged on the upper sides of the two pen-shaped cylinders (22); and the ejector pin inside the pen-shaped cylinder (22) is used to push the cylinder support piston (21) to extrude the rivet.

2. The automobile shock absorber bottom valve press riveting assembly according to claim 1, characterized in that: A piston limit block (23) is arranged at the bottom end of the inner wall of the cylinder body (18), a hydraulic piston (24) is arranged on the upper side of the piston limit block (23) on the inner wall of the cylinder body (18), and a hydraulic joint (19) is arranged on the lower side of the outer wall at the right end of the cylinder body (18), and the hydraulic joint (19) is used to connect an oil pipe to apply pressure to the cylinder body (18) so as to drive the hydraulic piston (24) to move.

3. The automobile shock absorber bottom valve press riveting assembly according to claim 2, characterized in that: An air buffer piston (20) is arranged on the upper side of the outer wall of the hydraulic piston (24), and an air pipe joint (25) is arranged on the upper side of the outer wall of the right end of the cylinder body (18). The air pipe joint (25) is used to apply air pressure to the inside of the cylinder to control the up and down movement of the air buffer piston (20).

4. The automobile shock absorber bottom valve press riveting assembly according to claim 3, characterized in that: The cylinder support piston (21) is mounted on the upper side of the inner wall of the hydraulic piston (24), and two rivet placement racks (17) are arranged on the upper end of the fixing rack (16), and the rivet placement racks (17) are used to place pre-installed rivets.

5. The automobile shock absorber bottom valve press riveting assembly according to claim 1, characterized in that: A rivet feeder (8) is provided on the right front side of the support frame (2), and the rivet feeder (8) is used to store rivets. A reinforcement plate (6) is laid at the middle position of the upper end of the rotating crawler assembly (5), and the reinforcement plate (6) is used to reinforce the rotating crawler assembly (5) and install production auxiliary devices.

6. The automobile shock absorber bottom valve press riveting assembly according to claim 1, characterized in that: The two servo presses (7) are fixedly connected to the rivet bit (9) via a pressing shaft (12); a floating joint (11) is provided between the servo press (7) and the pressing shaft (12); and the pressing shaft (12) is fixedly connected to the servo press (7) via the floating joint (11).

7. The automobile shock absorber bottom valve press riveting assembly according to claim 6, characterized in that: A sensor (10) is arranged on the left side of the servo press (7), and a screwdriver bit bird beak cylinder (13) is arranged on the right side of the servo press (7), wherein the screwdriver bit bird beak cylinder (13) is used to fix rivets.

8. The automobile shock absorber bottom valve press riveting assembly according to claim 7, characterized in that: A lower frame (14) is arranged at the lower end of the screwdriver bit bird beak cylinder (13), and a lower cylinder (15) is arranged on the left side of the lower frame (14). The lower cylinder (15) is used to control the lower frame (14) to move up and down.

Images