Workpiece clamping device for automatic welding machine

Abstract

The utility model relates to workpiece clamping field especially automatic welding machine's workpiece clamping device, including mobile station, still including rotation seat and rotary rod, both sides end portion of mobile station all are installed with rotation seat, the inside rotation seat is connected with rotary rod through the pivot rotation, the upper end of rotary rod is provided with the mounting rod, the front end portion of mounting rod is connected with the first rotary table for installing the clamping mechanism through the pivot rotation, the utility model discloses through mobile station, rotation seat and rotary rod drive workpiece, through mounting rod installation and rotate first rotary table and second rotary table, and utilize the tension spring drive fixed peg to cooperate mounting rod and relax or fixed first rotary table and second rotary table, and utilize the rotary ring and install first rotary pipe and second rotary pipe to install different clamping mechanism, through first rotary table and second rotary table install first rotary pipe and second rotary pipe, and through mounting rod rotate first rotary table and second rotary table to replace different clamping mechanism.

Description

Technical Field

[0001] This utility model relates to the field of workpiece clamping, and more particularly to a workpiece clamping device for an automatic welding machine. Background Technology

[0002] Automatic welding machines can flexibly and rationally change the posture of the welding torch through an internal drive mechanism, which is conducive to all-position welding work and thus effectively improves the welding efficiency between workpieces. During use, a clamping device is required to clamp different workpieces so that the welding torch of the automatic welding machine can be positioned and welded.

[0003] Most existing automatic welding machines have workpiece clamping devices with universal clamping structures. During use, the force position of the universal clamping mechanism on the cylindrical and plate-shaped workpieces changes significantly. Repeated clamping and positioning can easily increase the fatigue of some parts of the clamping mechanism, affecting the clamping force and reducing the performance and service life of the workpiece clamping device of the automatic welding machine.

[0004] Therefore, in view of the problem that most of the existing workpiece clamping devices of automatic welding machines are designed to reduce the fatigue of some parts of the clamping mechanism due to repeated clamping and positioning during use, thus affecting the clamping force and reducing the performance and service life of the workpiece clamping device of the automatic welding machine, a workpiece clamping device for automatic welding machines can be designed. Utility Model Content

[0005] To overcome the problem that most workpiece clamping devices in automatic welding machines are designed to withstand repeated clamping and positioning during use, which can increase fatigue in certain parts of the clamping mechanism, affect the clamping force, and lead to a decrease in the effectiveness and service life of the workpiece clamping device in the automatic welding machine.

[0006] The technical solution of this utility model is as follows: a workpiece clamping device for an automatic welding machine, including a movable stage; it also includes a rotating seat and a rotating rod. Rotating seats are installed at both ends of the movable stage. A rotating rod is rotatably connected inside the rotating seat via a rotating shaft. An installation rod is provided at the upper end of the rotating rod. A first rotating stage for installing a clamping mechanism is rotatably connected at the front end of the installation rod via a rotating shaft. A second rotating stage for installing a clamping mechanism is rotatably connected at the rear end of the installation rod via a rotating shaft. A rotating ring is provided on both the first and second rotating stages. A fixing bolt is slidably connected at the upper end of both the first and second rotating stages. A tension spring is installed between the fixing bolt and both the first and second rotating stages. A first rotating tube is rotatably connected to the inner side of the rotating ring at the front end, and a second rotating tube is connected to the rotating ring at the rear end.

[0007] Preferably, the workpiece is moved by the moving table, the rotating seat and the rotating rod, and the first rotating table and the second rotating table are installed and rotated by the mounting rod. The tension spring drives the fixing bolt to loosen or fix the first rotating table and the second rotating table in coordination with the mounting rod. The first rotating tube and the second rotating tube are installed by the rotating ring to install different clamping mechanisms.

[0008] Preferably, the inner side of the mobile platform has an opening, and a connecting grid is installed inside the opening. A first limiting block is slidably connected to one end of the mobile platform via a slide groove.

[0009] Preferably, a second limiting block is fixed to the other end of the moving platform, and a base body is slidably connected to the outside of the moving platform via a connecting rod. A hydraulic push rod is installed on one end of the base body, and an extension rod is slidably connected to the inside of the rotating rod.

[0010] Preferably, a first limiting bolt is provided on the outer side of the extension rod, a rotating block is provided at the upper end of the extension rod, a second limiting bolt is provided at the upper end of the rotating block, and the second limiting bolt is threadedly connected to the extension rod.

[0011] Preferably, the outer side of the rotating block is rotatably connected to a rotating frame via a rotating shaft. Mounting rods are installed on both ends of the rotating frame, and connecting holes are provided on the mounting rods. The connecting holes are slidably connected to the fixing bolts.

[0012] Preferably, threaded rods are fixed to both ends of the first rotating tube. Limiting grooves are provided on the threaded rods. Claws are provided on the outer side of the threaded rods. The claws and the threaded rods are slidably connected through the limiting grooves. A rotating knob is rotatably connected to one end of the claws through a rotating joint. The rotating knob is threadedly connected to the threaded rod.

[0013] Preferably, the outer side of the second rotating tube is rotatably connected to the first clamping plate via a damping shaft, and the outer side of the first clamping plate is provided with the second clamping plate. The first clamping plate and the second rotating tube are rotatably connected via the damping shaft.

[0014] The beneficial effects of this utility model are:

[0015] The workpiece is moved by a moving table, a rotating seat, and a rotating rod. The first and second rotating tables are mounted and rotated by a mounting rod. A tension spring drives a fixing bolt to loosen or fix the first and second rotating tables in conjunction with the mounting rod. The first and second rotating tubes are mounted by a rotating ring to install different clamping mechanisms. The first and second rotating tubes are mounted on the first and second rotating tables, and the first and second rotating tables are rotated by the mounting rod to change different clamping mechanisms. Attached Figure Description

[0016] Figure 1The diagram shown is a three-dimensional structural schematic of the present invention.

[0017] Figure 2 The diagram shown is a disassembled structural diagram of the mobile platform of this utility model;

[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of the rotating rod and mounting rod of this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the gripper of this utility model;

[0020] Figure 5 The diagram shown is a three-dimensional structural schematic of the second rotating tube of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Moving platform; 2. Opening; 3. Connecting grid; 4. First limiting block; 5. Second limiting block; 6. Rotating seat; 7. Base body; 8. Hydraulic push rod; 9. Rotating rod; 10. Extension rod; 11. First limiting bolt; 12. Rotating block; 13. Second limiting bolt; 14. Rotating frame; 15. Mounting rod; 16. Connecting hole; 17. First rotating platform; 18. Second rotating platform; 19. Rotating ring; 20. Fixing bolt; 21. Tension spring; 22. First rotating tube; 23. Threaded rod; 24. Limiting groove; 25. Gripper; 26. Rotating knob; 27. Second rotating tube; 28. First clamping plate; 29. ​​Second clamping plate. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5This utility model provides an embodiment of a workpiece clamping device for an automatic welding machine, including a movable stage 1; it also includes a rotating seat 6 and a rotating rod 9. Rotating seats 6 are installed on both ends of the movable stage 1. The rotating rod 9 is rotatably connected to the interior of the rotating seat 6 via a rotating shaft. An mounting rod 15 is provided at the upper end of the rotating rod 9. A first rotating stage 17 for mounting a clamping mechanism is rotatably connected to the front end of the mounting rod 15 via a rotating shaft. A second rotating stage 18 for mounting a clamping mechanism is rotatably connected to the rear end of the mounting rod 15 via a rotating shaft. Rotating rings 19 are provided on both the first and second rotating stages 17. Fixing bolts 20 are slidably connected to the upper ends of both the first and second rotating stages 18. Tension springs 21 are installed between the fixing bolts 20 and both the first and second rotating stages 17 and 18. A first rotating tube 22 is rotatably connected to the inner side of the rotating ring 19 at the front end, and a second rotating tube 27 is connected to the second rotating tube 27 at the rear end of the rotating ring 19. The workpiece is moved by the movable stage 1, rotating seat 6, and rotating rod 9, and the workpiece is moved by the mounting rod. 15. Install and rotate the first rotating platform 17 and the second rotating platform 18, and use the tension spring 21 to drive the fixing bolt 20 to loosen or fix the first rotating platform 17 and the second rotating platform 18 in conjunction with the mounting rod 15. Use the rotating ring 19 to install the first rotating tube 22 and the second rotating tube 27 to install different clamping mechanisms. The inner side of the moving platform 1 has an opening 2, and the inside of the opening 2 is equipped with a connecting grid 3. One side end of the moving platform 1 is slidably connected to the first limiting block 4 through the slide groove. The opening 2 and the connecting grid 3 are used to receive the high-temperature residue generated during welding. The other side end of the moving platform 1 is fixedly connected to the second limiting block 5. The outer side of the moving platform 1 is slidably connected to the base body 7 through the connecting rod. One side end of the base body 7 is equipped with a hydraulic push rod 8. The inner side of the rotating rod 9 is slidably connected to the extension rod 10. Different moving platforms 1 are connected through the first limiting block 4 and the second limiting block 5. The hydraulic push rod 8 and the base body 7 facilitate the movement of the moving platform 1 to load welding workpieces and improve the continuity of welding work.

[0024] Please see Figures 3-5In this embodiment, a first limiting bolt 11 is provided on the outer side of the extension rod 10, a rotating block 12 is provided at the upper end of the extension rod 10, and a second limiting bolt 13 is provided at the upper end of the rotating block 12. The second limiting bolt 13 is threadedly connected to the extension rod 10. The rotating block 12 is driven to rise and fall by the rotating rod 9, the extension rod 10, and the first limiting bolt 11, and the angle between the rotating block 12 and the extension rod 10 is fixed by the second limiting bolt 13. A rotating frame 14 is rotatably connected to the outer side of the rotating block 12 through a rotating shaft. Mounting rods 15 are installed on both ends of the rotating frame 14. A connecting hole 16 is opened on the mounting rod 15, and the connecting hole 16 is slidably connected to the fixing bolt 20. The mounting rod 15 is moved by the rotating block 12 and the rotating frame 14 to change the tilt angle of the mounting rod 15. The two sides of the first rotating tube 22 Each end is fixedly connected with a threaded rod 23, and a limiting groove 24 is formed on the threaded rod 23. A gripper 25 is provided on the outer side of the threaded rod 23. The gripper 25 and the threaded rod 23 are slidably connected through the limiting groove 24. A rotating knob 26 is rotatably connected to one end of the gripper 25 through a rotating joint. The rotating knob 26 is threadedly connected to the threaded rod 23. The gripper 25 is moved by the threaded rod 23, the limiting groove 24 and the rotating knob 26 to clamp the cylindrical workpiece with the two grippers 25. The outer side of the second rotating tube 27 is rotatably connected to the first clamping plate 28 through a damping rotating shaft. A second clamping plate 29 is provided on the outer side of the first clamping plate 28. The first clamping plate 28 and the second rotating tube 27 are rotatably connected by a damping rotating shaft. The first clamping plate 28 and the second clamping plate 29 are driven by the second rotating tube 27 to clamp the plate-shaped workpiece.

[0025] During welding, firstly, the first limiting block 4 is slid so that it engages with the second limiting block 5 of another moving platform 1. Then, the rotating block 12 is raised and lowered by the rotating rod 9, the extension rod 10 and the first limiting bolt 11, and the angle between the rotating block 12 and the extension rod 10 is fixed by the second limiting bolt 13. Then, workpieces of different shapes are fixed by the clamping mechanism, and the moving platform 1 is moved by the hydraulic push rod 8 and the base body 7 to move the workpiece. The welding workpieces are loaded by multiple moving platforms 1 to improve the continuity of the welding work. Finally, the two workpieces are welded by an automatic welding machine, and the high-temperature residue generated during welding is received by the open port 2 and the connecting grid 3.

[0026] In use, firstly, the first rotating platform 17 and the second rotating platform 18 are installed and rotated via the mounting rod 15, and the tension spring 21 drives the fixing bolt 20 to loosen or fix the first rotating platform 17 and the second rotating platform 18 in coordination with the mounting rod 15. Next, the first rotating platform 17 and the second rotating platform 18 are rotated around the rotating block 12 via the rotating frame 14 and the mounting rod 15 to select different types of clamping structures. Then, the first rotating tube 22 and the second rotating tube 27 are installed via the rotating ring 19, and the jaws 25 are moved via the threaded rod 23, the limiting groove 24 and the rotating knob 26 to clamp the cylindrical workpiece using the two jaws 25. Finally, the first clamping plate 28 and the second clamping plate 29 are driven by the second rotating tube 27 to clamp the plate-shaped workpiece.

[0027] Through the above steps, the workpiece is moved by the moving table 1, the rotating seat 6, and the rotating rod 9. The first rotating table 17 and the second rotating table 18 are installed and rotated by the mounting rod 15. The tension spring 21 drives the fixing bolt 20 to loosen or fix the first rotating table 17 and the second rotating table 18 in coordination with the mounting rod 15. The first rotating tube 22 and the second rotating tube 27 are installed by the rotating ring 19 to install different clamping mechanisms. This solves the problem that in most automatic welding machines, the workpiece clamping device is designed to reduce fatigue in some parts of the clamping mechanism due to repeated clamping and positioning during use, which affects the clamping force and leads to a decrease in the performance and service life of the workpiece clamping device of the automatic welding machine.

Claims

1. A workpiece clamping device for an automatic welding machine, comprising a movable stage (1); characterized in that: It also includes a rotating seat (6) and a rotating rod (9). The rotating seat (6) is installed on both sides of the moving platform (1). The rotating rod (9) is rotatably connected inside the rotating seat (6) through a rotating shaft. The upper end of the rotating rod (9) is provided with a mounting rod (15). The front end of the mounting rod (15) is rotatably connected to a first rotating platform (17) for installing the clamping mechanism through a rotating shaft. The rear end of the mounting rod (15) is rotatably connected to a second rotating platform (18) for installing the clamping mechanism through a rotating shaft. The first rotating platform (17) and the second rotating platform (18) are both provided with rotating rings (19). The upper ends of the first rotating platform (17) and the second rotating platform (18) are slidably connected with fixing bolts (20). Tension springs (21) are installed between the fixing bolts (20) and the first rotating platform (17) and the second rotating platform (18). The inner side of the rotating ring (19) at the front end is rotatably connected with a first rotating tube (22), and the second rotating tube (27) of the rotating ring (19) at the rear end is connected to the second rotating tube.

2. The workpiece clamping device of the automatic welding machine according to claim 1, characterized in that: An opening (2) is provided on the inner side of the mobile platform (1), and a connecting grid (3) is installed inside the opening (2). A first limiting block (4) is slidably connected to one end of the mobile platform (1) through a slide groove.

3. The workpiece clamping device of the automatic welding machine according to claim 2, characterized in that: A second limiting block (5) is fixed to the other end of the moving platform (1). The outer side of the moving platform (1) is slidably connected to the base body (7) via a connecting rod. A hydraulic push rod (8) is installed on one end of the base body (7). An extension rod (10) is slidably connected to the inner side of the rotating rod (9).

4. The workpiece clamping device of the automatic welding machine according to claim 3, characterized in that: A first limiting bolt (11) is provided on the outer side of the extension rod (10), a rotating block (12) is provided at the upper end of the extension rod (10), a second limiting bolt (13) is provided at the upper end of the rotating block (12), and the second limiting bolt (13) is threadedly connected to the extension rod (10).

5. The workpiece clamping device of the automatic welding machine according to claim 4, characterized in that: A rotating frame (14) is rotatably connected to the outer side of the rotating block (12) via a rotating shaft. Mounting rods (15) are installed on both ends of the rotating frame (14). A connecting hole (16) is provided on the mounting rod (15), and the connecting hole (16) is slidably connected to the fixing bolt (20).

6. The workpiece clamping device of the automatic welding machine according to claim 1, characterized in that: Both ends of the first rotating tube (22) are fixedly connected to threaded rods (23). Limiting grooves (24) are opened on the threaded rods (23). A gripper (25) is provided on the outside of the threaded rod (23). The gripper (25) and the threaded rod (23) are slidably connected through the limiting grooves (24). A rotating knob (26) is rotatably connected to one end of the gripper (25) through a rotating joint. The rotating knob (26) is threadedly connected to the threaded rod (23).

7. The workpiece clamping device of the automatic welding machine according to claim 1, characterized in that: The outer side of the second rotating tube (27) is rotatably connected to the first clamping plate (28) via a damping shaft. The outer side of the first clamping plate (28) is provided with a second clamping plate (29). The first clamping plate (28) and the second rotating tube (27) are rotatably connected via a damping shaft.

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