Automobile shock absorber bottom valve press riveting assembly

Abstract

The utility model discloses an automobile shock absorber bottom valve press-riveting assembly which comprises a rotating crawler belt assembly and valve bodies, a plurality of 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 air cylinder, whether the rivets are aligned with the bit beak air cylinder or not is detected through a sensor, then the bit beak air cylinder descends, and the rivet placing frame and the bit beak air cylinder are 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 utility model belongs to the technical field related to automobile accessories, and particularly 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 the cab, seat, steering wheel, etc. It can also be used as a buffer on the vehicle bumper. The shock absorber is assembled from multiple parts. 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. Utility Model Content

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

[0004] To achieve the above-mentioned purpose, the utility model 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 provided 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 provided 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 provided at the bottom ends of the two cylinder bodies, and cylinder support pistons are provided on the upper sides of the two pen-shaped cylinders. The internal pin of the pen-shaped cylinder is used to push the cylinder support 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 provided on the upper side of the outer wall of the hydraulic piston, and an air pipe joint is provided on the upper side of the outer wall of the right end of the cylinder body. 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 mounted 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 on 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 provided on the left side of the servo press, and a screwdriver bit bird's beak cylinder is provided 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 rack is provided at the lower end of the screwdriver head bird's beak cylinder, and a lower cylinder is provided on the left side of the lower rack, and the lower cylinder is used to control the up and down movement of the lower rack.

[0019] Compared with the prior art, the present invention provides a car shock absorber bottom valve press riveting assembly, which has the following features:

[0020] Beneficial effects:

[0021] 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 placement 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 drops, and the servo press drops, squeezing 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 and collapsed for closing and fixing. The stability of the rivet fixation can be increased by squeezing together from top to bottom, 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 unidirectional squeezing, resulting in gaps. This increases the efficiency of valve body production and improves the yield rate of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a schematic diagram of the press-riveted assembly structure of the bottom valve of the automobile shock absorber.

[0023] Figure 2 This 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.

[0024] Figure 3 This is a schematic diagram of the support frame structure of the present utility model.

[0025] Figure 4 This is a schematic structural diagram of the auxiliary punching device of the present utility model.

[0026] Figure 5 This is a schematic diagram of the left end planar structure of the auxiliary punching device of the present utility model.

[0027] Figure 6 This is a schematic diagram of the detailed structure of the cylinder body of the present utility model.

[0028] Figure 7 This is a schematic diagram of the planed surface structure of the left end of the cylinder body of the present invention.

[0029] 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's beak cylinder; 14. Lower frame; 15. Lower cylinder; 16. Fixed frame; 17. Rivet placement rack; 18. Cylinder body; 19. Hydraulic joint; 20. Air cushion piston; 21. Cylinder support piston; 22. Pen-shaped cylinder; 23. Hydraulic piston limit block; 24. Hydraulic piston; 25. Air pipe joint. DETAILED DESCRIPTION

[0030] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0031] The utility model provides Figure 1-7 The bottom valve of the automobile shock absorber shown is riveted and assembled, comprising a rotating track assembly 5 and a valve body 4;

[0032] A plurality of valve bodies 4 are evenly spaced on the upper end of the rotating crawler assembly 5;

[0033] A plurality of support legs 3 are provided at the lower end of the rotating crawler assembly 5;

[0034] A support frame 2 is provided on the right front side of the rotating crawler assembly 5;

[0035] Two servo presses 7 are provided at the upper end of the support frame 2;

[0036] A rivet bit 9 is provided on the lower side of the two servo presses 7;

[0037] An auxiliary punching device 1 is provided at the bottom end of the inner wall of the support frame 2;

[0038] 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 in 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 head.

[0039] like Figure 6 and Figure 7As 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 for controlling 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 racks 17 are provided on the upper end of the fixing frame 16, and the rivet rack 17 is used to place pre-installed rivets A rivet feeder 8 is provided on the right front side of the support frame 2. 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. 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 squeezed, completing the entire bottom valve riveting assembly, thereby ensuring the consistency and quality of each product.

[0040] like Figure 2 and Figure 3 As 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 screwdriver bit bird beak cylinder 13 is provided on the right side of the servo press 7. The screwdriver bit bird beak cylinder 13 is used to fix the rivet. A lower frame 14 is provided at the lower end of the screwdriver bit bird beak cylinder 13. The left side of the lower frame 14 is provided with a A lower cylinder 15 is provided, which is used to control the up and down movement of the lower frame 14. 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 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, the rivet is at the bird's beak flap, and the servo press 7 descends, pushing the rivet into the rivet installation space of the valve body 4.

[0041] 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, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bottom valve press riveted assembly for a car shock absorber, comprising a rotating track assembly (5) and a valve body (4); A plurality of valve bodies (4) are equidistantly arranged 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 provided 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); Its characteristics are: A fixing frame (16) is provided 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 provided at the bottom ends of the two cylinder bodies (18), cylinder support pistons (21) are provided on the upper sides of the two pen-shaped cylinders (22), and the internal ejector pins of the pen-shaped cylinders (22) are used to push the cylinder support pistons (21) to extrude the rivets.

2. The automobile shock absorber bottom valve press riveting assembly according to claim 1, characterized in that: 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), and 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 an oil pipe to apply pressure to the cylinder body (18) 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 provided on the upper side of the outer wall of the hydraulic piston (24), and 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).

4. The automobile shock absorber bottom valve press riveting assembly according to claim 3, characterized in that: The cylinder supporting piston (21) is mounted on the upper side of the inner wall of the hydraulic piston (24); the upper end of the fixing frame (16) is provided with two rivet placing frames (17); the rivet placing frames (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 presses (7) and the pressing shaft (12); and the pressing shaft (12) is fixedly connected to the servo presses (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 provided on the left side of the servo press (7), and a screwdriver bit bird beak cylinder (13) is provided on the right side of the servo press (7). 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: The lower end of the screwdriver bit bird beak cylinder (13) is provided with a lower frame (14), and the left side of the lower frame (14) is provided with a lower cylinder (15), and the lower cylinder (15) is used to control the lower frame (14) to move up and down.

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