Shock absorber rivet and manufacturing die thereof

Abstract

The shock absorber rivet comprises a rivet sleeve and a rivet core, an end cap is arranged at the top of the rivet sleeve, through holes are formed in the middle of the rivet sleeve and the middle of the end cap, and internal threads are formed in the bottom of the through hole in the middle of the rivet sleeve. External threads matched with the internal threads are formed in the bottom of the rivet core, a baffle is arranged at the top of the rivet core, the rivet core is contracted inwards through a riveting machine to pass through the baffle and extrude the end cap, the end cap is hollow, the end cap deforms along with continuous extrusion of the baffle to wrap the baffle, and the whole rivet is fixed to the connecting position. And then the rivet core is rotated to be separated from the baffle, and the rivet core can be taken out for reuse.

Description

TECHNICAL FIELD

[0001] The utility model relates to rivet field especially relates to a shock absorber rivet and preparation mould thereof. BACKGROUND

[0002] The shock absorber rivet is a pin-shaped object for connecting two parts with through holes and a cap at one end for connecting a shock absorber, in riveting, the parts to be riveted are connected by deformation or interference of the rivet, and the rivets are various in type and form, and the manufacturing of the rivets has various forms.

[0003] The open core rivet has two types, one is a flat round head open core rivet, and the other is a countersunk head open core rivet, wherein the flat round head open core rivet is most widely used, and the countersunk head open core rivet is suitable for riveting occasions where the surface needs to be smooth, the open core rivet has a large opening under the action of the rivet expansion head during use, thereby riveting and fixing, and then the rivet core is cut off with the help of a tool. Since the rivet core is cut off, the remaining part cannot be used continuously, the rivet core is used only once, the use cost is improved, and resource waste is caused.

[0004] Therefore, it is necessary to provide a new shock absorber rivet and preparation mould thereof to solve the above technical problems. SUMMARY

[0005] To solve the above technical problems, the utility model provides a shock absorber rivet and preparation mould thereof.

[0006] The shock absorber rivet provided by the utility model comprises a rivet sleeve and a core, the top of the rivet sleeve is provided with an end cap, a through hole is formed in the middle of the rivet sleeve and the end cap, an internal thread is formed in the bottom of the through hole in the middle of the rivet sleeve, an external thread matched with the internal thread is formed in the bottom of the core, and a baffle is arranged at the top of the core.

[0007] Further, the top end of the core is threadedly connected with the inner side wall of the baffle.

[0008] Further, the axial length of the core is greater than that of the rivet sleeve, and when the external thread at the bottom of the core is separated from the internal thread in the middle of the through hole of the rivet sleeve, the baffle is attached to the top of the end cap.

[0009] Further, the inside of the end cap is hollow.

[0010] The utility model discloses a preparation mould of shock absorber rivet on the other aspect provides, including conveyer, upper die holder, end cap punch -die, drilling equipment and tapping equipment, be equipped with the lower die seat for fixing rivet sleeve on the conveyer, the upper die holder is located the conveyer top, the end cap punch -die, drilling equipment and tapping equipment are side by side and are arranged in the upper die holder bottom.

[0011] Further, the end cap punch -die includes a punch cylinder, a connecting frame and a punch head, the punch cylinder is fixedly installed on the top of the upper die holder, the output end of the punch cylinder is fixedly connected with the top of the connecting frame, the punch head is fixedly installed on the bottom of the connecting frame, and a forming groove for forming the end cap is formed in the bottom of the punch head.

[0012] Further, the drilling equipment includes a punch cylinder, a connecting frame and a punch head, the punch cylinder is fixedly installed on the top of the upper die holder, the output end of the punch cylinder is fixedly connected with the top of the connecting frame, the punch head is fixedly installed on the bottom of the connecting frame, and a punch rod matched with the size of the through hole is fixedly connected with the bottom of the punch head.

[0013] Further, the tapping equipment includes a punch cylinder, a connecting frame and a driving motor, the punch cylinder is fixedly installed on the top of the upper die holder, the output end of the punch cylinder is fixedly connected with the top of the connecting frame, the driving motor is fixedly installed on the bottom of the connecting frame, and a threaded cutter is fixedly connected with the output end of the driving motor.

[0014] Further, the top of the lower die seat is provided with an extrusion groove matched with the maximum diameter of the end cap, and the bottom of the extrusion groove is communicated with a placing groove for placing the rivet sleeve.

[0015] Compared with the related art, the shock absorber rivet and the preparation mould thereof have the following beneficial effects:

[0016] The shock absorber rivet and the preparation mould thereof are provided, and in specific implementation, the rivet core is inwardly retracted through the baffle and extrudes the end cap by using the riveter, the end cap is hollow, the baffle is wrapped in the end cap by continuously extruding the end cap to deform, the rivet is fixedly arranged at the connecting position, then the rivet core is rotated to be separated from the baffle, and the rivet core can be taken out and reused. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model provides a whole structure schematic diagram of shock absorber rivet;

[0018] Figure 2 The utility model provides a whole structure schematic diagram of shock absorber rivet;

[0019] Figure 3 A cross-sectional view of the mold for preparing the shock absorber rivet provided by this utility model.

[0020] The following are the labels in the diagram: 1. Rivet sleeve; 2. Rivet core; 3. End cap; 4. Through hole; 5. Baffle; 6. Conveyor; 7. Upper mold frame; 8. Lower mold base; 9. Stamping cylinder one; 10. Connecting frame one; 11. Stamping head one; 12. Forming groove; 13. Stamping cylinder two; 14. Connecting frame two; 15. Stamping head two; 16. Punch rod; 17. Stamping cylinder three; 18. Connecting frame three; 19. Drive motor; 20. Thread cutter; 21. Extrusion groove; 22. Placement groove. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figure 1 , Figure 2 as well as Figure 3 ,in, Figure 1 A schematic diagram of the overall structure of the shock absorber rivet provided by this utility model; Figure 2 A cross-sectional view of the shock absorber rivet provided by this utility model; Figure 3 A cross-sectional view of the mold for preparing the shock absorber rivet provided by this utility model. Example

[0023] In the specific implementation process, such as Figures 1-2 As shown, the shock absorber rivet includes a rivet sleeve 1 and a rivet core 2. The top of the rivet sleeve 1 is provided with an end cap 3, which is hollow inside. A through hole 4 is provided in the middle of the rivet sleeve 1 and the end cap 3. An internal thread is provided at the bottom of the through hole 4 in the middle of the rivet sleeve 1. An external thread matching the internal thread is provided at the bottom of the rivet core 2. A baffle 5 is provided at the top of the rivet core 2. The top of the rivet core 2 is threadedly connected to the inner wall of the baffle 5 and can be disassembled by the thread.

[0024] It should be noted that the axial length of the rivet core 2 is greater than the axial length of the rivet sleeve 1, ensuring that the rivet core 2 can be rotated out of the thread of the rivet sleeve 1 during assembly. When the external thread at the bottom of the rivet core 2 disengages from the internal thread of the through hole 4 in the middle of the rivet sleeve 1, the baffle 5 and the top of the end cap 3 are in contact. That is, when using this rivet, the baffle 5 and the top of the end cap 3 need to be in contact first to disengage the external thread at the bottom of the rivet core 2 from the internal thread of the through hole 4 in the middle of the rivet sleeve 1. During assembly, the external thread at the bottom of the rivet core 2 is matched with the internal thread of the through hole 4 in the middle of the rivet sleeve 1. Example

[0025] In a specific implementation process, refer to Figure 3As shown, the mold for preparing shock absorber rivets includes a conveyor 6, an upper mold frame 7, an end cap stamping mold, a drilling device, and a tapping device. The conveyor 6 is provided with a lower mold base 8 for fixing the rivet sleeve 1. The upper mold frame 7 is located above the conveyor 6. The end cap stamping mold, the drilling device, and the tapping device are arranged side by side at the bottom of the upper mold frame 7. The top of the lower mold base 8 is provided with an extrusion groove 21 that matches the maximum diameter of the end cap 3, and the bottom of the extrusion groove 21 is connected to a placement groove 22 for placing the rivet sleeve 1.

[0026] It should be noted that the end cap stamping die includes a stamping cylinder 9, a connecting frame 10, and a stamping head 11. The stamping cylinder 9 is fixedly installed on the top of the upper die frame 7. The output end of the stamping cylinder 9 is fixedly connected to the top of the connecting frame 10. The stamping head 11 is fixedly installed on the bottom of the connecting frame 10. The bottom of the stamping head 11 has a forming groove 12 for forming the end cap 3. The stamping cylinder 9 drives the stamping head 11 to press down. The forming groove 12 at the bottom of the stamping head 11 extrudes the material at the top of the rivet sleeve 1 into the end cap 3.

[0027] It should be noted that the drilling equipment includes a second electric stamping cylinder 13, a second connecting frame 14, and a second stamping head 15. The second electric stamping cylinder 13 is fixedly installed on the top of the upper mold frame 7. The output end of the second electric stamping cylinder 13 is fixedly connected to the top of the second connecting frame 14. The second stamping head 15 is fixedly installed on the bottom of the second connecting frame 14. A punch rod 16 matching the size of the through hole 4 is fixedly connected to the bottom of the second stamping head 15. The second electric stamping cylinder 13 drives the second stamping head 15 to press down, and the punch rod 16 at the bottom of the second stamping head 15 punches out the through hole 4 in the middle of the rivet sleeve 1.

[0028] It should be noted that the tapping equipment includes a stamping electric cylinder 317, a connecting frame 318, and a drive motor 19. The stamping electric cylinder 317 is fixedly installed on the top of the upper die frame 7. The output end of the stamping electric cylinder 317 is fixedly connected to the top of the connecting frame 318. The drive motor 19 is fixedly installed on the bottom of the connecting frame 318. The output end of the drive motor 19 is fixedly connected to a thread cutter 20. The stamping electric cylinder 317 presses down on the drive motor 19, and the drive motor 19 drives the thread cutter 20 to process the internal thread of the bottom through hole 4 of the rivet sleeve 1.

[0029] It should be noted that the preparation of the nail core 2 is completed by a stamping machine, which is separate from the cold heading stamping of the rivet sleeve 1.

[0030] The working principle provided by this utility model is as follows: When the rivet is prepared, the lower die base 8 fixes the rivet sleeve 1, the punch head 11 completes the extrusion of the end cap 3, the conveyor 6 moves the lower die base 8 to the bottom of the drilling equipment, the punch rod 16 punches out the through hole 4, the conveyor 6 continues to move, the tapping equipment processes the internal thread at the bottom of the through hole 4, and the mold continuously conveys the workpiece through the conveyor 6 to realize mass production.

[0031] When using this rivet, fix the rivet sleeve 1 on the part to be connected (such as the shock absorber base), then rotate the rivet core 2 so that its bottom external thread disengages from the internal thread of the rivet sleeve 1. Continue to rotate the rivet core 2, and the rivet core 2 moves upward, causing the baffle 5 to fit tightly against the top of the end cap 3. The top of the rivet core 2 is further locked to the baffle 5. When the bottom external thread of the rivet core 2 disengages from the internal thread of the rivet sleeve 1, use the riveting machine to retract the rivet core 2 inward through the baffle 5 and squeeze the end cap 3. The end cap 3 is hollow inside. As the baffle 5 continues to squeeze, the end cap 3 deforms and wraps the baffle 5 inside, fixing the rivet as a whole at the connection. Then rotate the rivet core 2 to disengage it from the baffle 5, and the rivet core 2 can be removed for reuse.

[0032] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A shock absorber rivet, characterized in that, It includes a rivet sleeve (1) and a rivet core (2). The rivet sleeve (1) is provided with an end cap (3) at the top. The rivet sleeve (1) and the end cap (3) are provided with a through hole (4) in the middle. The bottom of the through hole (4) in the middle of the rivet sleeve (1) is provided with an internal thread. The bottom of the rivet core (2) is provided with an external thread that matches the internal thread. The top of the rivet core (2) is provided with a baffle (5).

2. The shock absorber rivet according to claim 1, characterized in that, The top of the nail core (2) is threaded to the inner wall of the baffle (5).

3. The shock absorber rivet according to claim 2, characterized in that, The axial length of the nail core (2) is greater than the axial length of the rivet sleeve (1). When the external thread at the bottom of the nail core (2) disengages from the internal thread of the through hole (4) in the middle of the rivet sleeve (1), the baffle (5) fits against the top of the end cap (3).

4. The shock absorber rivet according to claim 3, characterized in that, The end cap (3) is hollow inside.

5. A mold for preparing the shock absorber rivet according to any one of claims 1-4, characterized in that, It includes a conveyor (6), an upper mold frame (7), an end cap stamping die, a drilling device and a tapping device. The conveyor (6) is provided with a lower mold base (8) for fixing the rivet sleeve (1). The upper mold frame (7) is located above the conveyor (6). The end cap stamping die, the drilling device and the tapping device are arranged side by side at the bottom of the upper mold frame (7).

6. The mold for preparing the shock absorber rivet according to claim 5, characterized in that, The end cap stamping die includes a stamping electric cylinder (9), a connecting frame (10), and a stamping head (11). The stamping electric cylinder (9) is fixedly installed on the top of the upper die frame (7). The output end of the stamping electric cylinder (9) is fixedly connected to the top of the connecting frame (10). The stamping head (11) is fixedly installed on the bottom of the connecting frame (10). The bottom of the stamping head (11) is provided with a forming groove (12) for forming the end cap (3).

7. The mold for preparing the shock absorber rivet according to claim 6, characterized in that, The drilling equipment includes a second stamping electric cylinder (13), a second connecting frame (14), and a second stamping head (15). The second stamping electric cylinder (13) is fixedly installed on the top of the upper mold frame (7). The output end of the second stamping electric cylinder (13) is fixedly connected to the top of the second connecting frame (14). The second stamping head (15) is fixedly installed on the bottom of the second connecting frame (14). The bottom of the second stamping head (15) is fixedly connected to a punch rod (16) that matches the size of the through hole (4).

8. The mold for preparing the shock absorber rivet according to claim 7, characterized in that, The tapping equipment includes a stamping electric cylinder three (17), a connecting frame three (18), and a drive motor (19). The stamping electric cylinder three (17) is fixedly installed on the top of the upper mold frame (7). The output end of the stamping electric cylinder three (17) is fixedly connected to the top of the connecting frame three (18). The drive motor (19) is fixedly installed on the bottom of the connecting frame three (18). The output end of the drive motor (19) is fixedly connected to a thread cutter (20).

9. The mold for preparing the shock absorber rivet according to claim 8, characterized in that, The lower mold base (8) has an extrusion groove (21) at the top that matches the maximum diameter of the end cap (3), and the bottom of the extrusion groove (21) is connected to a placement groove (22) for placing the rivet sleeve (1).

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