A bolt riveting apparatus

Abstract

The application discloses a bolt riveting equipment and relates to the technical field of automobile part fastening; the equipment comprises a machine base, a protective screen is installed outside the machine base, and an infrared light curtain sensor is arranged on the operation side; an X-direction and Y-direction movable feeding bearing plate is arranged above the machine base, a gas-liquid pressure cylinder and a punching head are installed on the feeding bearing plate; a rotating disc driven by a motor is arranged on the top of the machine base, and at least two riveting stations are arranged on the rotating disc at equal angles. Each riveting station comprises a floating support system composed of a floating plate, a tool plate and a compression spring. A fixed sleeve and a bypass feeding pipe are arranged below the punching head, and the automatic feeding of riveting bolts is realized by cooperating with a limiting block and an electromagnetic assembly. The application realizes continuous operation through multi-station rotation design, the automatic feeding system ensures the stable riveting quality, the infrared light curtain sensor provides safety guarantee, the displacement sensor realizes accurate control, and the production efficiency and the riveting quality are obviously improved, and the labor intensity and the safety risk are reduced.

Description

Technical Field

[0001] This invention relates to the field of automotive component fastening technology, specifically to a bolt riveting device. Background Technology

[0002] Traditional riveting equipment is mostly single-station operation, riveting only one workpiece at a time, resulting in low production efficiency and inability to meet the needs of mass production. Operators need to frequently load and unload workpieces, which is physically demanding and prone to operational errors due to fatigue.

[0003] Secondly, the installation of riveting bolts often relies on manual placement, which can easily lead to problems such as bolt tilting and inaccurate positioning, resulting in unstable riveting quality and even riveting failure or workpiece damage. Furthermore, manual feeding methods cannot achieve continuous operation, affecting the overall production cycle. Therefore, we provide a bolt riveting machine. Summary of the Invention

[0004] The purpose of this invention is to provide a bolt riveting device to solve the problems mentioned in the background art.

[0005] The present invention can be achieved by the following technical solution: a bolt riveting device, including a base, a feed bearing plate that can move in the X and Y directions is installed on the base, a fixed seat is fixedly installed on the top of the feed bearing plate, a pneumatic-hydraulic booster cylinder is fixedly installed on one side of the top of the fixed seat, and a punch head is fixedly installed at the output end of the pneumatic-hydraulic booster cylinder, with the working direction of the punch head being vertically downward. A rotating disk is also installed horizontally on the top of the machine base. At least two riveting stations are evenly arranged at equal angles on the top of the rotating disk. The punch head can be driven to the position above the riveting station by the feed bearing plate, and the riveting station can be switched by the rotation of the rotating disk. An automatic bolt feeding assembly is installed below the stamping head and mounted on the side wall of the fixed seat.

[0006] A further technical improvement of the present invention is that a displacement sensor is fixedly installed on the side wall of the fixed base, and a follower block is also fixed at the output end of the gas-liquid booster cylinder. The follower block contacts and cooperates with the displacement sensor to obtain the position of the stamping head.

[0007] A further technical improvement of the present invention is that each riveting station includes a floating plate that is mounted on the top of the rotary table by means of a spring. A tooling plate is fixedly connected to the top of the floating plate. A positioning block and an auxiliary support seat are fixedly provided on the top of the tooling plate to restrict its degree of freedom in the horizontal direction. A support column is fixedly installed at the bottom of the tooling plate corresponding to the ball pin sleeve riveting part.

[0008] A further technical improvement of the present invention is that: the automatic bolt feeding assembly includes a fixed sleeve fixed to the fixed base, the fixed sleeve being coaxially arranged with the punch head, and a bypass feeding pipe being fixedly arranged on one side of the fixed sleeve for continuously supplying the rivet bolts, the bypass feeding pipe being inclined so that the rivet bolts slide down and are fed by themselves under the action of gravity.

[0009] A further technical improvement of the present invention is that: a limit block is installed at the lower end of the fixed sleeve by rotating evenly at the same angle through a torsion spring; a trigger switch is installed on one side of any limit block; an electromagnetic component is fixed in the mounting hole in the middle of the bypass feed pipe; the electromagnetic component is electrically connected to the trigger switch; and a limit protrusion is fixed at the output end of the electromagnetic component to limit the riveting bolt.

[0010] A further technical improvement of the present invention is that: when the trigger switch is not triggered, the limiting protrusion extends to block the riveting bolt in the bypass feed pipe; when the trigger switch is triggered, the limiting protrusion retracts to release the riveting bolt.

[0011] A further technical improvement of the present invention is that a protective net is installed around the outside of the base, and an infrared light curtain sensor is installed at the manual operation side window of the protective net.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention utilizes an automatic feeding mechanism consisting of a fixed sleeve, a bypass feeding pipe, and a limiting block. Gravity is used to feed the riveting bolts downwards, and a trigger switch and electromagnetic components precisely control the feeding of each bolt. This design not only avoids bolt tilting caused by manual placement and ensures consistent bolt posture each time it enters the fixed sleeve, significantly improving the stability of riveting quality, but also greatly reduces the intensity of manual labor.

[0013] 2. The riveting station of this invention adopts a design of floating plate, guide shaft and compression spring to form a flexible floating structure. When the punch head presses down, the floating plate can adaptively fine adjust according to the tolerance of the workpiece, effectively absorb impact energy, avoid hard extrusion caused by workpiece size deviation, protect the tooling plate and workpiece, and ensure the fit of the riveting surface.

[0014] 3. This invention employs a multi-station rotary table design, coupled with an X / Y axis module-driven feeding system, to achieve synchronous cyclic operation of "processing-loading / unloading". While one station is riveting, the operator can perform parts loading and unloading operations at another station, greatly reducing waiting time. Attached Figure Description

[0015] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a schematic diagram of the connection of the main working structure of the present invention; Figure 3 This is a schematic diagram of the rotary disc riveting station connection of the present invention; Figure 4 This is a schematic diagram of the connection structure between the tooling plate and the floating plate of the present invention; Figure 5 This is a schematic diagram of the bottom connection structure of the tooling plate of the present invention; Figure 6 This is a schematic diagram of the automatic feeding structure for rivet bolts according to the present invention.

[0017] In the diagram: 1. Machine base; 2. Protective mesh; 3. Infrared light curtain sensor; 4. Feed bearing plate; 5. Y-axis module; 6. X-axis module; 7. Fixed base; 8. Pneumatic-hydraulic booster cylinder; 9. Punching head; 10. Displacement sensor; 11. Follower block; 12. Rotary disk; 13. Floating plate; 14. Tooling plate; 15. Positioning block; 16. Auxiliary support base; 17. Ball pin sleeve; 18. Sliding sleeve; 19. Guide shaft; 20. Pin; 21. Compression spring; 22. Support column; 23. Fixed sleeve; 24. Bypass feed pipe; 25. Limit block; 26. Riveting bolt; 27. Trigger switch; 28. Wire; 29. ​​Electromagnetic component. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0019] Please see Figure 1-6 As shown, a bolt riveting device includes a base 1, a protective mesh 2 is installed around the outside of the base 1, a window is provided on the manual operation side of the protective mesh 2, and infrared light curtain sensors 3 are installed on both sides of the window. A feed support plate 4 that can move in the X and Y directions is installed on the top of the base 1. A Y-axis module 5 and an X-axis module 6 are installed on the bottom of the feed support plate 4 to drive the feed support plate 4 to complete the X and Y directions. A fixed seat 7 is fixedly installed on the top of the feed support plate 4. A pneumatic-hydraulic booster cylinder 8 is fixedly installed on one side of the top of the fixed seat 7. A punching head 9 is fixedly installed at the output end of the pneumatic-hydraulic booster cylinder 8. The working direction of the punching head 9 is vertically downward. The top of the base 1 is also horizontally rotatably mounted with a rotating disk 12 driven by a motor. At least two riveting stations are evenly arranged at equal angles on the top of the rotating disk 12. The stamping head 9 can be driven to the position above the riveting station by the feed bearing plate 4, and the riveting station can be switched by the rotation of the rotating disk 12.

[0020] A displacement sensor 10 is fixedly installed on the side wall of the fixed base 7. A follower block 11 is also fixed at the output end of the gas-liquid booster cylinder 8. The follower block 11 contacts and cooperates with the displacement sensor 10 to obtain the position of the punch head 9, thereby providing real-time feedback control. Each riveting station includes a floating plate 13 that is mounted vertically on the top of the rotating disk 12. A tooling plate 14 is fixedly connected to the top of the floating plate 13. Guide shafts 19 are fixedly installed at the four corners of the bottom of the floating plate 13. Sliding sleeves 18 are fixedly installed through the corresponding positions of the rotating disk 12. One end of the guide shaft 19 slides through the sliding sleeve 18. A pin 20 is also provided on one side of the guide shaft 19. A compression spring 21 is sleeved on the outside of the pin 20. The two ends of the compression spring 21 abut against the floating plate 13 and the rotating disk 12 respectively. A positioning block 15 is symmetrically fixed on the top of the tooling plate 14, and an auxiliary support seat 16 is also fixedly installed to match the shape of the ball pin sleeve 17. The positioning block 15 and the auxiliary support seat 16 cooperate to restrict the horizontal degree of freedom of the ball pin sleeve 17. A support column 22 is fixedly installed at the bottom of the tooling plate 14 by bolts. The support column 22 is located at the bottom of the part of the ball pin sleeve 17 that needs to be riveted, and is used to cooperate with the stamping head 9 to complete the entire riveting process.

[0021] Furthermore, to reduce manual labor intensity and improve riveting efficiency, the riveting bolts 26 adopt an automatic filling method. This method can avoid inconsistent installation states of the riveting bolts 26 (some of which are tilted), thereby improving the riveting quality. A fixed sleeve 23 is coaxially provided below the bottom of the punch head 9. The fixed sleeve 23 is connected and fixed to the fixed seat 7. A bypass feeding pipe 24 is connected and fixed on one side of the fixed sleeve 23 to continuously supply the riveting bolts 26. The bypass feeding pipe 24 is inclined so that the riveting bolts 26 can slide down and be fed by gravity. A limit block 25 is installed at the lower end of the fixed sleeve 23 by a torsion spring rotating at a uniform angle. A trigger switch 27 is installed on one side of any limit block 25. When the rivet bolt 26 located between multiple limit blocks 25 is pushed open by the downward pressure of the stamping head 9, the limit block 25 activates the trigger switch 27. An electromagnetic component 29 is fixed in the mounting hole in the middle of the bypass feed pipe 24. The electromagnetic component 29 is electrically connected to the trigger switch 27 through a wire 28. The output end of 9 is fixed with a limit protrusion; when the trigger switch 27 is not triggered, the limit protrusion extends to limit the riveting bolt 26 in the bypass feed pipe 24 to prevent it from slipping; when the trigger switch 27 is triggered, the limit protrusion retracts, and the riveting bolt 26 slides down to abut against the side wall of the punch head 9. When the punch head 9 moves upward, the limit protrusion of the electromagnetic component 29 switches to the extended state to continue to limit the subsequent riveting bolt 26 to prevent it from slipping; the electromagnetic component 29 is driven by an electromagnet.

[0022] In use, the ball pin sleeve 17 is manually placed on the tooling plate 14 in the corresponding riveting station. The electronic control terminal drives the feed bearing plate 4 to move the punch head 9 to the working position. Then, the output end of the pneumatic-hydraulic booster cylinder 8 drives the punch head 9 to descend and press the riveting bolt 26 in the fixed sleeve 23 into the riveting hole of the ball pin sleeve 17 to complete the automatic riveting work. After completing the riveting of one hole, the punch head 9 is raised and its position is changed by the Y-axis module 5 and X-axis module 6 to continue to complete the subsequent riveting work. After one station is completed, the drive rotary table 12 switches stations. At the same time, the ball pin sleeve 17 on the completed station is taken out and put back into the ball pin sleeve 17 to be riveted. During riveting, the infrared light curtain sensor 3 monitors the opening position of the protective net 2 to prevent personnel from accidentally entering and causing accidents.

[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A bolt riveting device, characterized in that, Includes a base (1), on which a feed support plate (4) movable in the X and Y directions is installed. A fixed seat (7) is fixedly installed on the top of the feed support plate (4). A gas-liquid booster cylinder (8) is fixedly installed on one side of the top of the fixed seat (7). A punch head (9) is fixedly installed at the output end of the gas-liquid booster cylinder (8). The working direction of the punch head (9) is vertically downward. The machine base (1) is also horizontally rotatably mounted on the top of a rotating disk (12). At least two riveting stations are evenly arranged at equal angles on the top of the rotating disk (12). The stamping head (9) can be driven to the position above the riveting station by the feed bearing plate (4), and the riveting station can be switched by the rotation of the rotating disk (12). An automatic bolt feeding assembly is installed on the side wall of the fixed base (7) below the stamping head (9).

2. The bolt riveting equipment according to claim 1, characterized in that, The displacement sensor (10) is fixedly installed on the side wall of the fixed base (7), and a follower block (11) is also fixed at the output end of the gas-liquid booster cylinder (8). The follower block (11) contacts and cooperates with the displacement sensor (10) to obtain the position of the stamping head (9).

3. The bolt riveting equipment according to claim 1, characterized in that: Each riveting station includes a floating plate (13) mounted on the top of the rotary disk (12) by a spring. A tooling plate (14) is fixedly connected to the top of the floating plate (13). A positioning block (15) and an auxiliary support seat (16) are fixedly installed on the top of the tooling plate (14) to restrict its freedom in the horizontal direction. A support column (22) is fixedly installed at the bottom of the tooling plate (14) corresponding to the riveting part of the ball pin sleeve (17).

4. The bolt riveting equipment according to claim 1, characterized in that, The automatic bolt feeding assembly includes a fixed sleeve (23) fixed to the fixed base (7). The fixed sleeve (23) is coaxially arranged with the punch head (9). A bypass feeding pipe (24) is fixedly arranged on one side of the fixed sleeve (23) for continuously supplying the rivet bolt (26). The bypass feeding pipe (24) is inclined so that the rivet bolt (26) slides down by itself under the action of gravity for feeding.

5. A bolt riveting device according to claim 4, characterized in that, The lower end of the fixed sleeve (23) is equipped with a limit block (25) by rotating evenly at the same angle through a torsion spring. A trigger switch (27) is installed on one side of any limit block (25). An electromagnetic component (29) is fixed in the mounting hole in the middle of the bypass feed pipe (24). The electromagnetic component (29) is electrically connected to the trigger switch (27). The output end of the electromagnetic component (29) is fixed with a limit protrusion for limiting the riveting bolt (26).

6. The bolt riveting equipment according to claim 5, characterized in that, When the trigger switch (27) is not triggered, the limit protrusion extends to block the rivet bolt (26) in the bypass feed pipe (24); when the trigger switch (27) is triggered, the limit protrusion retracts to release the rivet bolt (26).

7. The bolt riveting equipment according to claim 1, characterized in that, The base (1) is surrounded by a protective net (2), and an infrared light curtain sensor (3) is installed at the manual operation side window of the protective net (2).

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