Automatic welding device

Abstract

The utility model discloses an automatic welding device, which relates to the technical field of automatic welding equipment and comprises a mainframe box, a controller is fixedly mounted at the front end of the mainframe box, a plurality of guide rails A are fixedly mounted at the upper end of the mainframe box, two guide rails A form a group, a movable platform A is movably mounted on the two guide rails A, and a movable platform B is mounted on the movable platform A. A guide rail B is fixedly installed on the moving platform A. A moving platform B is movably installed on the guide rail B. A plurality of air cylinders are fixedly installed on one side of the moving platform B. The pressing rod is arranged at one end of the air cylinder and one end of the support, namely, the pressing rod is composed of the pressing block, the installation base, the installation rod, the connecting block A, the positioning rod and the like, the position of the positioning rod can be rapidly adjusted, and therefore the pressing rod can be matched with the compression spring A to conduct compensatory positioning on workpieces of different sizes and matched with the pressing block and the connecting block B to achieve fixing of the workpieces of different sizes. The using number of air cylinders is reduced, the operation cost is reduced, and the positioning and fixing stability of workpieces of different sizes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic welding equipment, and particularly relates to an automatic welding device. Background Art

[0002] An automatic welding equipment is a welding tool that adopts advanced technologies and an automatic control system to realize the automation and intelligence of the welding process. This equipment is widely used in fields such as automobiles, aerospace, and shipbuilding, greatly improving the welding production efficiency and product quality.

[0003] When some automatic welding equipment fixes workpieces, since multiple cylinders can support and fix the workpieces from different points to ensure the workpieces remain stable during the welding process and avoid displacement or deformation, multiple cylinders are used in cooperation to achieve the positioning and fixing of the workpieces. When positioning and fixing workpieces of different sizes, it is necessary to adjust the installation positions of multiple cylinders to achieve the position adjustment of the positioning pins. This method requires disassembling and assembling the cylinders, and at the same time, it is also necessary to re-adjust and fix the connecting pipelines of the cylinders, making the adjustment process of the cylinders complicated. In addition, using multiple cylinders means more control logics and hardware components, which may increase the complexity of the system, thus increasing the risk of failures and maintenance costs. Moreover, as the number of cylinders used increases, the response speed of the cylinders, air pressure fluctuations, or delays in the control system may affect the synchronization, resulting in unstable fixation of the workpieces. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automatic welding device, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An automatic welding device includes a main chassis. A controller is fixedly installed at the front end of the main chassis. A plurality of guide rails A are fixedly installed at the upper end of the main chassis. Two of the guide rails A form a group, and a moving platform A is movably installed on the two guide rails A. A guide rail B is fixedly installed on the moving platform A. A moving platform B is movably installed on the guide rail B. A plurality of cylinders are fixedly installed on one side of the moving platform B. A bracket is also fixedly installed on the moving platform B at a position above the cylinders. A positioning mechanism is arranged between the piston rod of the cylinder and the bracket.

[0007] The positioning mechanism includes a pressure rod, a pressure block, a mounting seat, and a mounting rod. One end of the pressure rod is movably installed on the piston rod of the cylinder and one end of the bracket. The pressure block is movably installed at the lower end of the pressure rod. The mounting seat is fixedly installed at the upper end of the pressure rod. The mounting rod is movably installed on one side of the mounting seat. One end of the mounting rod is also movably installed with a connecting block A. A positioning rod is movably installed inside the connecting block A. A welding robot arm is also fixedly installed on the main chassis located between the two moving platforms A, and the welding robot arm is electrically connected to the main control board in the controller.

[0008] As a further optimized solution of the present invention, an installation groove is provided at the lower end of the pressure rod.

[0009] As a further optimized solution of the present invention, a connecting block B is provided at the upper end of the pressure block. The pressure block and the connecting block B are movably connected through a compression spring B. The connecting block B is inserted and installed in the installation groove. A fixing block is fixedly installed on one side of the mounting seat. A screw groove is provided at the central position inside the fixing block. The mounting seat, the pressure rod, and the connecting block B are fixedly connected by bolts. With the setting of the mounting seat and the fixing block, it can provide a basic condition for the installation of the pressure block, the connecting block B, and the mounting rod. And the pressure block that can move up and down can adapt to the upper surfaces of different workpieces.

[0010] As a further optimized solution of the present invention, a pressing plate is provided on one side of the fixing block. The pressing plate is fixedly installed on one side of the fixing block by screws.

[0011] As a further optimized solution of the present invention, a chute A is provided inside the mounting rod. A stud is fixedly installed at the central position of one end of the mounting rod. A nut is threadedly connected to one end of the stud. The mounting rod is inserted and installed on the fixing block through the chute A and fixed by the pressing plate.

[0012] As a further optimized solution of the present invention, a screw hole is provided on one side of the mounting rod. And through holes in the transverse and longitudinal directions are respectively provided inside the connecting block A. A chute B is provided inside the positioning rod. The positioning rod is inserted and installed in the longitudinal through hole inside the connecting block A. The connecting block A is also inserted and installed on the stud through the internal transverse through hole. And the stud passes through the chute B. A chute B is sleeved on the stud between the connecting block A and the nut at one end of the stud. With the adjustable mounting rod, it can drive the connecting block A and the positioning rod to adjust the lateral position, and cooperate with the compression spring A to realize the positioning and fixing of workpieces of different sizes through the cooperation of the positioning rod, the cylinder, the pressure rod, the pressure block, and the connecting block B.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] An automatic welding device described in the present utility model is provided with a pressure rod at one end of a cylinder and a bracket. That is, the pressure rod is composed of components such as a pressure block, a mounting seat, a mounting rod, a connecting block A, and a positioning rod. It can quickly adjust the position of the positioning rod, so as to cooperate with a compression spring A to perform a compensating positioning on workpieces of different sizes, and cooperate with the pressure block and the connecting block B to achieve fixation of different sizes, reduce the number of cylinders used, lower the operation cost, and improve the stability of positioning and fixing workpieces of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the structure of the moving platform B of the present utility model;

[0017] Figure 3 is a schematic diagram of the disassembled structure of the positioning mechanism of the present utility model;

[0018] Figure 4 is a schematic diagram of the disassembled structure of the mounting rod and the connecting block A of the present utility model.

[0019] In the figure: 1, main chassis; 2, controller; 3, guide rail A; 4, moving platform A; 5, guide rail B; 6, moving platform B; 7, cylinder; 8, bracket; 9, positioning mechanism; 10, pressure rod; 11, pressure block; 12, mounting seat; 13, mounting rod; 14, connecting block A; 15, positioning rod; 16, compression spring A; 17, mounting groove; 18, connecting block B; 19, compression spring B; 20, fixing block; 21, thread groove; 22, pressing plate; 23, chute A; 24, stud; 25, threaded hole; 26, chute B; 27, welding robotic arm; 28, workpiece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] As Figures 1 - 4 shown, an automatic welding device provided by the present utility model includes a main chassis 1, a controller 2 is fixedly installed at the front end of the main chassis 1, a plurality of guide rails A3 are fixedly installed on the upper end of the main chassis 1, two guide rails A3 are in a group, a moving platform A4 is movably installed on the two guide rails A3, a guide rail B5 is fixedly installed on the moving platform A4, a moving platform B6 is movably installed on the guide rail B5, a plurality of cylinders 7 are fixedly installed on one side of the moving platform B6, and a positioning mechanism 9 is also fixedly installed on the moving platform B6 above the position of the cylinder 7;

[0022] The positioning mechanism 9 includes a pressure rod 10, a pressure block 11, a mounting seat 12, and a mounting rod 13. One end of the pressure rod 10 is movably installed on the piston rod of the cylinder 7 and one end of the bracket 8. The pressure block 11 is movably installed at the lower end of the pressure rod 10. The mounting seat 12 is fixedly installed at the upper end of the pressure rod 10. The mounting rod 13 is movably installed on one side of the mounting seat 12. A connecting block A14 is also movably installed at one end of the mounting rod 13. A positioning rod 15 is movably installed inside the connecting block A14. A welding robot arm 27 is also fixedly installed on the main chassis 1 located between the two moving platforms A4, and the welding robot arm 27 is electrically connected to the main control board in the controller 2.

[0023] As Figures 2 - 3 shown, an installation groove 17 is opened at the lower end of the pressure rod 10. A connecting block B18 is arranged at the upper end of the pressure block 11. The pressure block 11 and the connecting block B18 are movably connected through a compression spring B19. The connecting block B18 is inserted and installed in the installation groove 17. A fixing block 20 is fixedly installed on one side of the mounting seat 12. A screw groove 21 is opened at the central position inside the fixing block 20. The mounting seat 12, the pressure rod 10, and the connecting block B18 are fixedly connected by bolts. With the settings of the mounting seat 12 and the fixing block 20, basic conditions can be provided for the installation of the pressure block 11, the connecting block B18, and the mounting rod 13. The pressure block 11 that can move up and down can adapt to the upper surfaces of different workpieces 28. A pressing plate 22 is arranged on one side of the fixing block 20. The pressing plate 22 is fixedly installed on one side of the fixing block 20 by screws;

[0024] As Figures 2 - 4 shown, a chute A23 is opened inside the mounting rod 13. A stud 24 is fixedly installed at the central position of one end of the mounting rod 13. A nut is threadedly connected to one end of the stud 24. The mounting rod 13 is inserted and installed on the fixing block 20 through the chute A23 and fixed by the pressing plate 22. A screw hole 25 is opened on one side of the mounting rod 13. Through holes in the transverse and longitudinal directions are respectively opened inside the connecting block A14. A chute B26 is opened inside the positioning rod 15. The positioning rod 15 is inserted and installed in the longitudinal through hole inside the connecting block A14. The connecting block A14 is also inserted and installed on the stud 24 through the internal transverse through hole, and the stud 24 passes through the chute B26. A chute B26 is sleeved on the stud 24 between the connecting block A14 and the nut at one end of the stud 24. With the adjustable mounting rod 13, the connecting block A14 and the positioning rod 15 can be driven to adjust the lateral position, and in cooperation with the compression spring A16, the positioning and fixing of workpieces 28 of different sizes can be achieved through the cooperation of the positioning rod 15, the cylinder 7, the pressure rod 10, the pressure block 11, and the connecting block B18.

[0025] It should be noted that the present utility model is an automatic welding device. When adjusting the position of the positioning rod 15 according to different workpieces 28, the screws of the fixed pressing plate 22 can be loosened by a tool. Then, the mounting rod 13 can slide and adjust on the fixed block 20 through the chute A23, so as to adjust the positions of the connecting block A14 and the positioning rod 15 at one end of the mounting rod 13. After that, the screws of the fixed pressing plate 22 can be tightened again. When an automatic feeding mechanism such as an external robotic gripper places the workpiece 28 on the moving platform B6, the controller 2 controls the external gas station to move the output end of the cylinder 7 upward. Then, the pressing rod 10 rotates at the upper end of the bracket 8, so that the pressing rod 10 drives the positioning rod 15 to be placed on one side of the workpiece 28 through the mounting seat 12, the mounting rod 13 and the connecting block A14, while the positioning rods 15 of the other set of positioning mechanisms 9 are on the other side of the workpiece 28. The connecting block A14 and the positioning rod 15 are inserted and installed on the stud 24, and by the acting force of the compression spring A16, the connecting block A14 can be driven to move a small distance to one side on the stud 24 by the distance difference between the positioning rod 15 and the side of the workpiece 28, so as to realize the positioning of the workpiece 28 by means of the acting force of the compression spring A16. Subsequently, as the lower end of the pressing rod 10 continues to move downward, the pressing block 11 presses tightly on the upper surface of the workpiece 28, so as to realize the pressing and fixing of the workpiece 28, and then the workpiece 28 can be welded by the welding robot arm 27.

[0026] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device, characterized in that: The invention comprises a main box (1), a controller (2) is fixedly mounted on the front end of the main box (1), a plurality of guide rails A (3) are fixedly mounted on the upper end of the main box (1), two of the guide rails A (3) form a group, a mobile platform A (4) is movably mounted on the two guide rails A (3), a guide rail B (5) is fixedly mounted on the mobile platform A (4), a mobile platform B (6) is movably mounted on the guide rail B (5), a plurality of cylinders (7) are fixedly mounted on one side of the mobile platform B (6), a bracket (8) is also fixedly mounted on the mobile platform B (6) located above the cylinder (7), and a positioning mechanism (9) is provided between the piston rod of the cylinder (7) and the bracket (8); The positioning mechanism (9) comprises a pressure rod (10), a pressure block (11), a mounting seat (12), and a mounting rod (13); one end of the pressure rod (10) is movably mounted on the piston rod of the cylinder (7) and one end of the bracket (8); the pressure block (11) is movably mounted on the lower end of the pressure rod (10); the mounting seat (12) is fixedly mounted on the upper end of the pressure rod (10); the mounting rod (13) is movably mounted on one side of the mounting seat (12); a connecting block A (14) is movably mounted on one end of the mounting rod (13); a positioning rod (15) is movably mounted in the connecting block A (14); a welding robot arm (27) is also fixedly mounted on the main box (1) between the two mobile platforms A (4); and the welding robot arm (27) is electrically connected to a main control board in the controller (2).

2. An automatic welding device according to claim 1, characterized in that: The lower end of the pressure rod (10) is provided with a mounting groove (17).

3. An automatic welding device according to claim 2, characterized in that: A connecting block B (18) is provided at the upper end of the pressure block (11); the pressure block (11) and the connecting block B (18) are movably connected via a compression spring B (19); the connecting block B (18) is inserted and installed in the installation groove (17); a fixing block (20) is fixedly installed on one side of the mounting seat (12); a screw groove (21) is provided at the center position of the fixing block (20); and the mounting seat (12) is fixedly connected to the pressure rod (10) and the connecting block B (18) via bolts.

4. An automatic welding device according to claim 3, characterized in that: A pressure plate (22) is provided on one side of the fixing block (20), and the pressure plate (22) is fixedly mounted on the one side of the fixing block (20) by means of screws.

5. An automatic welding device according to claim 4, characterized in that: A slide groove A (23) is provided in the mounting rod (13), a stud (24) is fixedly mounted at the center position of one end of the mounting rod (13), a nut is threadedly connected to one end of the stud (24), and the mounting rod (13) is inserted through the slide groove A (23) and mounted on the fixed block (20) and fixed by the pressure plate (22).

6. An automatic welding device according to claim 5, characterized in that: A screw hole (25) is provided on one side of the mounting rod (13), and a through-type transverse through hole and a longitudinal through hole are respectively provided in the connecting block A (14). A slide groove B (26) is provided in the positioning rod (15). The positioning rod (15) is inserted and installed in the longitudinal through hole in the connecting block A (14). The connecting block A (14) is also inserted and installed on the stud (24) through the internal transverse through hole, and the stud (24) passes through the slide groove B (26). The stud (24) located between the connecting block A (14) and a nut at one end of the stud (24) is provided with a slide groove B (26).

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