Riveting device

Abstract

A riveting device includes a support at the bottom of the frame for supporting rivet tubes or rivet posts. The support has a recess for accommodating the rivet tubes or rivet posts. Above the support, an upper guide seat and a lower guide seat for a punch are arranged vertically at intervals. The punch passes through guide holes in the upper and lower guide seats. A vertically movable punch is positioned above the punch. The punch, punch, and the recess on the support are vertically aligned. A return spring is provided between the punch body and the frame or the upper or lower guide seat, providing elastic force to drive the punch upward. This invention offers high riveting efficiency, constant and stable riveting force, and guaranteed riveting quality.

Description

Technical Field

[0001] This application relates to the field of component assembly, specifically to a snap-fit ​​device. Background Technology

[0002] Riveted connections have wide applications in existing technology. For example, the floor cover of a passenger car's trunk often needs to be lifted to access tools, spare tires, etc., which are usually hidden by the cover. To facilitate lifting the floor cover C, a pull ring D is typically attached to the floor cover C near the tailgate. The pull ring D is connected to the floor cover C using a riveted connector. Figure 1 As shown, the disc-shaped rivet tube A (or female rivet) and rivet post B (or male rivet) interlock to form a radial fastening constraint between the rivet post and the rivet tube. The interlocking sections of the rivet post and rivet tube pass through the mating area between the mating ring D and the base plate cover plate C. The disc-shaped heads of rivet tube A and rivet post B clamp and secure the mating area between the ring D and the base plate cover plate C, thus fixing the two together. Manual riveting is not only inefficient but also fails to guarantee the uniformity of the finished appearance and the stability of the connection after assembly. Utility Model Content

[0003] The purpose of this invention is to provide a riveting device that applies stable and efficient riveting pressure to rivet assemblies, thereby improving riveting efficiency and quality.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A riveting device includes a support at the bottom of the frame for supporting rivet tubes or rivet posts. The support has a recess for accommodating the rivet tubes or rivet posts. Above the support, upper and lower guide seats for punches are arranged vertically at intervals. The punch passes through guide holes in the upper and lower guide seats. A punch that moves vertically is provided above the punch. The punch, punch, and the recess on the support are aligned vertically. A return spring is provided between the punch body and the frame or the upper or lower guide seat for punches. The return spring provides elastic force to drive the punch to move upward.

[0006] Before using the riveting device provided in this application, first align the overlapping section with the hole area on the base plate cover for the rivet tube and rivet post to pass through, and let the rivet tube and rivet post pass through, forming a preliminary insertion state. Then, place the disc-shaped head of the rivet tube or rivet post in the recess of the support. At this time, start the punch and punch rod to move down. The lower end of the punch rod punches the disc-shaped head of the rivet tube or rivet post. The column section of the rivet post is inserted into the cavity of the rivet tube, and the column length of the rivet post is shortened and the radial diameter is thickened. The rivet tube and rivet post are riveted into one piece. The disc-shaped head of the rivet tube and rivet post tightly rivets the overlapping section with the base plate cover together, thus realizing the connection between the ring and the base plate cover. After the riveting operation is completed, the return spring drives the punch rod to lift up and remove the base plate cover to carry out the next riveting operation. This utility model has high riveting efficiency, constant and stable riveting force, and ensures riveting quality. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the connection structure between the floor cover and the belt ring of the car's rear compartment;

[0008] Figure 2 This is a perspective view of the present invention;

[0009] Figure 3 This is a side view of the present invention. Detailed Implementation

[0010] Reference Figure 1 , 2 As shown in Figure 3, a riveting device has a support 11 at the bottom of the frame 10 to support the rivet tube A or rivet post B. The support 11 has a recess 111 to accommodate the rivet tube A or rivet post B. Above the support 11, there are upper guide seats 13 and lower guide seats 12 arranged vertically at intervals. The punch 20 passes through the guide holes on the upper guide seats 13 and lower guide seats 12. A punch 411 that moves vertically is provided above the punch 20. The punch 411, the punch 20 and the recess 111 on the support 11 are vertically aligned. A return spring 30 is provided between the body of the punch 20 and the frame 10 or the upper guide seat 13 or the lower guide seat 12. The return spring 30 provides elastic force to drive the punch 20 to move upward.

[0011] In the above scheme, firstly, the rivet tube A or rivet post B is passed through the hole between the base plate cover plate C and the ring D. Then, the rivet tube A and rivet post B are initially inserted. Next, the disc-shaped head of the rivet tube A or rivet post B is placed in the recess 111 of the support 11. The punch 411 is activated to move downward and impact downward. The punch 411 strikes the punch rod 20 downward, thereby driving the punch rod 20 to strike the disc-shaped head of the rivet tube A or rivet post B downward quickly. Since the recess 111 of the support 11, the upper guide seat 13 of the punch rod, and the lower guide seat 12 of the punch rod are arranged coaxially, the upper guide seat 13 and the lower guide seat 12 of the punch rod have a positioning and guiding function, so that the punch rod 20 accurately applies a positive axial force to the disc-shaped head of the rivet tube A or rivet post B, so that the riveted parts are tightly joined, thereby reliably connecting the base plate cover plate C and the ring D. After riveting is completed, the return spring 30 drives the punch 20 to return to its initial position, reducing the workload of the assembly operation. (Reference) Figure 1 The base plate cover C and the ring D can be placed in this riveting device in the posture shown in the figure to carry out the riveting operation. Alternatively, the base plate cover C can be inverted vertically or the rivet tube A and rivet post B can be interchanged vertically. The device provided in this application can be used to carry out the riveting operation in either case.

[0012] Reference Figure 2 As shown, the upper middle section of the punch rod 20 is provided with a radially protruding protrusion 21. A return spring 30 is sleeved on the punch rod 20 below the protrusion 21. The return spring 30 is a helical compression spring. The upper end of the return spring 30 abuts against the lower end face of the protrusion 21, and the lower end of the return spring 30 presses against the upper end face of the punch rod lower guide seat 12.

[0013] The return spring 30 is a helical compression spring that remains in a relaxed state when the punch 20 is not impacted. At this time, the upper end of the return spring 30 supports the protrusion 21 on the punch 20, thus keeping the punch 20 in a high position. When the punch 20 is impacted and pressed down by the punch 411, the return spring 30 is driven by the punch 20 to contract. After the punch 20 completes the assembly operation by punching the disc head of the rivet tube A or rivet post B, the punch 411 is lifted, and the return spring 30 releases its elastic potential energy and drives the punch 20 to return to its initial position.

[0014] like Figure 2 As shown, the protrusion 21 is an annular protrusion circumferentially surrounding the rod body of the punch 20.

[0015] The protrusion 21 is designed as an annular protrusion, which helps the return spring 30 to provide uniform elastic force to the protrusion 21 to ensure the stability when supporting the punch 20 or driving the punch 20 to rise.

[0016] Preferred, such as Figure 2 As shown, the punch 411 is connected to the rod end of the piston rod 41 of the vertically arranged cylinder 40.

[0017] The cylinder 40 provides the power for the punch 411 to move up and down, ensuring that the punch 411 has a quick impulse response, stable impact force and controllable stroke, thus ensuring the uniformity of the appearance of the riveted parts and the stability of the assembly operation.

[0018] like Figure 2 As shown, the front cylinder head of the cylinder 40 is connected to a support plate 14 that is fixed horizontally on the upper end of the frame 10. The support plate 14 is U-shaped, and the piston rod 41 extends downward from the U-shaped notch of the support plate 14.

[0019] The cylinder 40 is connected to the support plate 14 so that cylinders with different diameters and strokes can be replaced at any time to meet the assembly operations of different riveted parts. The support plate 14 also facilitates the coaxial arrangement of the piston rod 41 end of the cylinder 40 and the punch rod 20.

Claims

1. A riveting device characterized by comprising: The bottom of the frame (10) has a support (11) for supporting the rivet tube (A) or rivet column (B). The support (11) has a recess (111) for accommodating the rivet tube (A) or rivet column (B). Above the support (11), there are upper guide seats (13) and lower guide seats (12) for punch rods arranged vertically. The punch rod (20) passes through the guide holes on the upper guide seats (13) and lower guide seats (12). A punch head (411) that moves vertically is provided above the punch rod (20). The punch head (411), the punch rod (20) and the recess (111) on the support (11) are aligned vertically. A return spring (30) is provided between the body of the punch rod (20) and the frame (10) or the upper guide seat (13) or the lower guide seat (12). The return spring (30) provides elastic force to drive the punch rod (20) to move upward.

2. The riveting device according to claim 1, characterized in that: The upper middle section of the punch rod (20) is provided with a radially protruding protrusion (21). A return spring (30) is sleeved on the punch rod (20) below the protrusion (21). The return spring (30) is a helical compression spring. The upper end of the return spring (30) abuts against the lower end face of the protrusion (21), and the lower end of the return spring (30) presses against the upper end face of the lower guide seat (12) of the punch rod.

3. The riveting device according to claim 2, characterized in that: The protrusion (21) is an annular protrusion that is circumferentially placed on the rod body of the punch (20).

4. The riveting device according to claim 1, characterized in that: The punch (411) is connected to the rod end of the piston rod (41) of the vertically arranged cylinder (40).

5. The riveting device according to claim 4, characterized in that: The front cylinder head of the cylinder (40) is connected to a support plate (14) that is fixed flat on the upper end of the frame (10). The support plate (14) is U-shaped, and the piston rod (41) extends downward from the U-shaped notch of the support plate (14).

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