A rivet press mechanism

Abstract

The utility model discloses a kind of rivet riveting mechanisms of riveting machine, the rivet riveting mechanism of riveting machine includes the fixture seat being set on rack, three-jaw cylinder is slidably arranged in the fixture seat, the top head is arranged above the three-jaw cylinder, and the riveting mechanism is arranged below the three-jaw cylinder;The riveting mechanism includes electric cylinder fixed on rack, cylinder body is fixed on the output shaft of electric cylinder, the top rod is connected to the upper end of the output shaft, piston is arranged in the cylinder body and is sleeved on the output shaft, limit sleeve is arranged on the piston, and the top rod is located in the limit sleeve.It is solved that the upper limit of rivet in prior art is usually driven by upper cylinder to press down the top head, the top head is stressed greatly when riveting, and certain rebound is caused to cylinder, which affects riveting effect.

Description

Technical Field

[0001] This utility model relates to the field of riveting machines, specifically to a riveting mechanism for a riveting machine. Background Technology

[0002] To generate damping force accurately, controllably, and reliably, a stacked valve needs to be installed at the bottom of the shock absorber. The valve plate inside the stacked valve needs to be riveted to the stacked valve using rivets. During the riveting process, the upper end of the rivet needs to be limited, and the lower end of the rivet is riveted open using a push rod. Currently, in existing technology, the upper limit of the rivet is often achieved by using an upper cylinder to drive the push head downwards, pressing against the head (upper end) of the rivet as support and limit. Then, the lower mold moves upwards to rivet the tail (lower end) of the rivet. The push head is subjected to a large force during riveting, which will cause a certain amount of rebound to the cylinder, affecting the riveting effect. Utility Model Content

[0003] The purpose of this utility model is to provide a rivet pressing mechanism for a riveting machine, which solves the problem that in the prior art, the upper limit of the rivet is usually achieved by using an upper cylinder to drive the top head to press down. The top head is subjected to a large force during riveting, which will cause a certain amount of rebound to the cylinder and affect the riveting effect.

[0004] To achieve the above objectives, this utility model provides a riveting mechanism for a riveting machine, characterized in that the riveting mechanism includes a clamping seat mounted on a frame, a three-jaw cylinder slidably mounted inside the clamping seat, a top head mounted above the three-jaw cylinder, and a riveting mechanism mounted below the three-jaw cylinder.

[0005] The riveting mechanism includes an electric cylinder fixed on a frame, a cylinder body fixed on the output shaft of the electric cylinder, a push rod connected to the upper end of the output shaft, a piston sleeved on the output shaft inside the cylinder body, a limit sleeve on the piston, and the push rod located inside the limit sleeve.

[0006] Preferably, a sliding hole is formed on the clamp seat, and a sliding rod is provided on the three-jaw cylinder, the sliding rod being slidably disposed in the sliding hole.

[0007] Preferably, the frame is provided with an adjusting rod, the adjusting rod is provided with an adjusting seat, and the top head is fixed on the adjusting seat.

[0008] Preferably, the adjusting seat is provided with a clamp, and the adjusting seat is locked onto the adjusting rod by the clamp.

[0009] Preferably, air hole joints are formed at both the upper and lower ends of the cylinder.

[0010] Beneficial effects: This utility model provides a riveting mechanism for a riveting machine. The riveting mechanism includes a clamping seat mounted on a frame, a three-jaw cylinder slidably mounted inside the clamping seat, a top head above the three-jaw cylinder, and a riveting mechanism below the three-jaw cylinder. The riveting mechanism includes an electric cylinder fixed on the frame, a cylinder body fixed on the output shaft of the electric cylinder, a top rod connected to the upper end of the output shaft, a piston sleeved on the output shaft inside the cylinder body, a limit sleeve on the piston, and the top rod located inside the limit sleeve. During operation, the stacked valve and valve plate are clamped and positioned using a three-jaw cylinder. A rivet passes through the central through-hole of both the stacked valve and valve plate, with its lower end extending to the lower end of the three-jaw cylinder. Initially, the cylinder is in a pressurized state, the piston is lifted, and the push rod is positioned within the limiting sleeve. The electric cylinder is activated, and its output shaft drives the push rod and limiting sleeve to move upwards synchronously, causing the limiting sleeve to contact the bottom of the stacked valve and push the stacked valve and three-jaw cylinder upwards until the upper end of the rivet is limited by the upper push head. The output shaft continues to move upwards, and the limiting sleeve, after being limited, moves downwards, expelling the gas from the cylinder. The push rod inside the limiting sleeve then extends out from within the limiting sleeve to rivet the lower end of the rivet. The rivet pressing mechanism of this utility model solves the problem in the prior art where the upper limit of the rivet is often achieved by using an upper cylinder to drive the push head downwards. The push head experiences significant force during riveting, which can cause a certain amount of rebound in the cylinder, affecting the riveting effect.

[0011] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a diagram showing the result of the riveting mechanism of the riveting machine provided by this utility model;

[0014] Figure 2 This is a structural diagram of the three-jaw cylinder in the rivet pressing mechanism of the riveting machine provided by this utility model;

[0015] Figure 3 This is a structural diagram of the riveting mechanism in the riveting mechanism of the riveting machine provided by this utility model;

[0016] Figure 4 This is a cross-sectional view of the riveting mechanism in the riveting mechanism of the riveting machine provided by this utility model.

[0017] Explanation of reference numerals in the attached figures

[0018] 1-Electric cylinder; 2-Push head; 3-Three-jaw cylinder; 5-Clamping seat; 6-Slide rod; 7-Output shaft; 8-Push rod; 9-Cylinder body; 10-Piston; 11-Limit sleeve. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] like Figure 1-4 As shown: This utility model provides a riveting mechanism for a riveting machine. The riveting mechanism includes a clamping seat 5 mounted on a frame. A three-jaw cylinder 3 is slidably mounted inside the clamping seat 5. A top head 2 is mounted above the three-jaw cylinder 3, and a riveting mechanism is mounted below the three-jaw cylinder 3. The riveting mechanism includes an electric cylinder 1 fixed on the frame. A cylinder body 9 is fixed to the upper part of the electric cylinder 1. An output shaft 7 of the electric cylinder 1 is located inside the cylinder body 9. A top rod 8 is connected to the upper end of the output shaft 7. A piston 10 is mounted inside the cylinder body 9 and sleeved on the output shaft 7. A limit sleeve 11 is mounted on the piston 10, and the top rod 8 is located inside the limit sleeve 11. Initially, the cylinder is in a pressurized state, the piston is lifted, and the push rod is located inside the limiting sleeve. When the electric cylinder is activated, its output shaft drives the push rod and limiting sleeve to move upwards synchronously, causing the limiting sleeve to contact the bottom of the stacked valve. This pushes the stacked valve and the three-jaw cylinder upwards until the upper end of the rivet is limited by the upper push head. The output shaft continues to move upwards, and the limiting sleeve, after being limited, moves downwards, expelling the gas from the cylinder. The push rod inside the limiting sleeve then extends out to rivet the lower end of the rivet. The rivet pressing mechanism of this utility model solves the problem in the prior art where the upper limit of the rivet is often achieved by using an upper cylinder to drive the push head downwards. The push head experiences significant force during riveting, which can cause a certain amount of rebound in the cylinder, affecting the riveting effect.

[0021] In a preferred embodiment of this utility model, in order to further limit the vertical displacement of the three-jaw cylinder, a sliding hole is formed on the clamp seat 5, and a sliding rod 6 is provided on the three-jaw cylinder 3, the sliding rod 6 being slidably disposed in the sliding hole.

[0022] In a preferred embodiment of this utility model, in order to adjust the height of the top head as needed, an adjusting rod is provided on the frame 1, an adjusting seat is provided on the adjusting rod, and the top head 2 is fixed on the adjusting seat.

[0023] In a preferred embodiment of this utility model, in order to effectively lock the adjusting seat onto the adjusting rod, a clamp is provided on the adjusting seat, and the adjusting seat is locked onto the adjusting rod by the clamp.

[0024] In a preferred embodiment of this utility model, air hole joints are formed at the upper and lower ends of the cylinder body 9.

[0025] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0026] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0027] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A rivet pressing mechanism for a riveting machine, characterized in that, The riveting mechanism of the riveting machine includes a clamp seat (5) set on the machine frame. A three-jaw cylinder (3) is slidably arranged inside the clamp seat (5). A top head (2) is arranged above the three-jaw cylinder (3). A riveting mechanism is arranged below the three-jaw cylinder (3). The riveting mechanism includes an electric cylinder (1) fixed on a frame. A cylinder body (9) is fixed on the output shaft (7) of the electric cylinder (1). A push rod (8) is connected to the upper end of the output shaft (7). A piston (10) is sleeved on the output shaft (7) inside the cylinder body (9). A limit sleeve (11) is provided on the piston (10). The push rod (8) is located inside the limit sleeve (11).

2. The rivet pressing mechanism of the riveting machine according to claim 1, characterized in that, The clamp seat (5) has a sliding hole, and the three-jaw cylinder (3) is provided with a sliding rod (6), which is slidably disposed in the sliding hole.

3. The rivet pressing mechanism of the riveting machine according to claim 1, characterized in that, An adjusting rod is provided on the frame, and an adjusting seat is provided on the adjusting rod. The top head (2) is fixed on the adjusting seat.

4. The rivet pressing mechanism of the riveting machine according to claim 3, characterized in that, The adjusting seat is equipped with a clamp, and the adjusting seat is locked onto the adjusting rod by the clamp.

5. The rivet pressing mechanism of the riveting machine according to claim 1, characterized in that, The cylinder (9) has air hole joints formed at its upper and lower ends respectively.

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