Positioning and pressing device for laser welding

Abstract

The utility model belongs to the technical field of laser welding positioning, and particularly relates to a laser welding positioning and pressing device which comprises a workbench, an L-shaped plate is fixedly connected to one side of the workbench, a laser welding instrument is fixedly connected to the top end of the inner side of the L-shaped plate, a groove is formed in the top end of the workbench, and a pair of sliding blocks is slidably connected into the groove; the laser welding positioning and pressing device is characterized in that a sliding block is arranged in the groove, a first electric telescopic rod is fixedly connected to one side of the sliding block and one side of the inner wall of the groove, and a first fixing box is fixedly connected to the top end of the sliding block. In the prior art, due to the fact that a workpiece shakes in the laser welding process, welding deviation is caused, the defective rate is likely to be increased, when pipe fitting type objects are welded, the pipe fitting type objects need to be rotated so that the whole bodies of the pipe fitting type objects can be conveniently welded, in the prior art, the pipe fitting type objects are inconvenient to rotate, and therefore the welding quality and efficiency of pipe fittings can be affected.

Description

Technical Field

[0001] The invention belongs to the technical field of laser welding positioning, and in particular relates to a laser welding positioning and clamping device. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is a heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully used in the precision welding of micro and small parts.

[0003] Since the energy generated during laser welding is very large, the laser welding clamping and positioning device has a poor positioning effect and is not stable enough, which will cause the workpiece to shake during the laser welding process and cause welding deviation, which can easily increase the defective rate. When welding pipe fittings, the pipe fittings need to be rotated to facilitate welding around them. The existing ones are not convenient to rotate, which will affect the quality and efficiency of pipe welding. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology, the problem that the laser welding clamping positioning device has a poor positioning effect and is not stable enough due to the large energy generated during laser welding, which will cause the workpiece to shake during laser welding and cause welding deviation, easily increasing the defective rate. When welding pipe fittings, it is necessary to rotate the pipe fittings to facilitate welding processing around them. The existing method is not convenient for rotating them, which affects the quality and efficiency of pipe welding.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a laser welding positioning and clamping device described in the utility model comprises a workbench, one side of the workbench is fixedly connected to an L-shaped plate, the inner top end of the L-shaped plate is fixedly connected to a laser welding instrument, the top end of the workbench is provided with a groove, a pair of sliders are slidably connected inside the groove, one side of the slider and one side of the inner wall of the groove are fixedly connected to a first electric telescopic rod, the top end of the slider is fixedly connected to a first fixed box, the top end of the first fixed box is fixedly connected to a second fixed box, one side of the first fixed box is fixedly connected to a servo motor, the output end of the servo motor is fixedly connected to a rotating shaft, the outer side of the rotating shaft is rotatably connected to one side of the first fixed box, the outer side of the rotating shaft is fixedly connected to a first bevel gear, and the other A fixed box is rotatably connected to a transmission shaft on one side, and the transmission shaft is fixedly connected to a second bevel gear on one side, a linkage assembly is arranged between the transmission shaft and the rotating shaft, the first bevel gear and the second bevel gear are meshed and connected to a third bevel gear on one side, and a transmission column is fixedly connected to the top of the third bevel gear, and the transmission column passes through and is rotatably connected to a box surface of the first fixed box and the second fixed box, a transmission assembly is arranged inside the second fixed box, a rotating column is rotatably connected to one side of the second fixed box, a clamping box is fixedly connected to one side of the rotating column, a rotating column is rotatably connected to the clamping box inside the clamping box, one end of the rotating column passes through the top surface of the clamping box and is fixedly connected to a rotating disk, a rotating cylinder is fixedly connected to the outside of the rotating column, a clamping assembly is arranged on the outside of the rotating cylinder, and a limiting assembly is arranged on the top of the rotating cylinder.

[0006] Preferably, the linkage assembly includes slide bars, two pairs of slide bars are fixedly connected to the outside of the transmission shaft, two pairs of strip grooves are arranged inside the rotating shaft, and the slide bars are slidably connected inside the strip grooves.

[0007] Preferably, the transmission assembly includes a fourth bevel gear, the fourth bevel gear is fixedly connected to the top end of the transmission column, the fourth bevel gear is meshingly connected with a fifth bevel gear, and the fifth bevel gear is fixedly connected to one side of the rotating column.

[0008] Preferably, the clamping assembly includes a fixed plate, a pair of the fixed plates are fixedly connected to the outside of the rotating cylinder, a small hydraulic cylinder is fixedly connected to the top end of one of the fixed plates, and an extrusion block is fixedly connected to the output end of the small hydraulic cylinder.

[0009] Preferably, the limiting assembly comprises a limiting hole, the limiting hole is arranged at the top of the rotating cylinder, the top of the clamping box is provided with a threaded hole, the threaded hole is internally threadedly connected with a limiting pin (36), and the bottom end of the limiting pin extends into the limiting hole.

[0010] Preferably, a second electric telescopic rod is fixedly connected to one side of the L-shaped plate, and a frosting strip is fixedly connected to one side of the second electric telescopic rod.

[0011] Preferably, a rubber sleeve is provided on the outer side of the rotating disk.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The laser welding positioning and clamping device described in the utility model, before grinding, the two workpieces to be welded are respectively placed in the clamping assembly, after the first electric telescopic rod is turned on, the two workpieces are moved close to each other to a suitable position, the second electric telescopic rod is turned on to drive the grinding strip to grind the welding surfaces of the two workpieces smooth, after grinding, the grinding strip is withdrawn and the first electric telescopic rod is turned on to squeeze the grinding surfaces of the two workpieces against each other and fit tightly, and then laser welding can be performed, the mutual pressure generated by the clamping assembly and the first electric telescopic rod allows the workpieces to be clamped and fixed on multiple sides, thereby ensuring the stability of the workpieces during the welding process, the grinding strip is used for smooth grinding before welding, better welding of the workpieces, and overall improved welding quality.

[0014] 2. The laser welding positioning and clamping device described in the utility model, when welding a tubular workpiece, can rotate while clamping and extruding through the provided transmission assembly and linkage assembly, so that the tubular workpiece can be welded in a circumferential manner. The rotation of the rotating disk drives the rotation of the rotating cylinder, and the workpiece can be adjusted at different angles, thereby improving the overall practicality. The frosting strip pushes the workpiece after welding to improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This is a three-dimensional front view structural diagram of the utility model;

[0018] Figure 3 It is a three-dimensional front view cross-sectional view of the utility model;

[0019] Figure 4 This utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 5 It is a partial structural diagram of the utility model;

[0021] In the figure: 1. workbench; 2. groove; 3. slider; 4. first electric telescopic rod; 5. first fixed box; 6. second fixed box; 7. servo motor; 8. rotating shaft; 9. first bevel gear; 10. transmission shaft; 11. second bevel gear; 12. linkage assembly; 13. third bevel gear; 14. transmission column; 15. transmission assembly; 16. rotating column; 17. clamping box; 18. rotating column; 19. rotating disk; 20. rotating cylinder; 21. clamping assembly; 22. slide bar; 23. strip groove; 24. fourth bevel gear; 25. fifth bevel gear; 26. fixed plate; 27. small hydraulic cylinder; 28. extrusion block; 29. ​​second electric telescopic rod; 30. frosted strip; 31. L-shaped plate; 32. laser welding instrument; 33. limit assembly; 34 limit hole; 35. threaded hole; 36. limit pin. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figures 1 to 5As shown, a laser welding positioning and clamping device described in the utility model, one side of the workbench 1 is fixedly connected to an L-shaped plate 31, the inner top of the L-shaped plate 31 is fixedly connected to a laser welding instrument, the top of the workbench 1 is provided with a groove 2, a pair of sliders 3 are slidably connected inside the groove 2, one side of the slider 3 and one side of the inner wall of the groove 2 are fixedly connected to a first electric telescopic rod 4, the top of the slider 3 is fixedly connected to a first fixed box 5, the top of the first fixed box 5 is fixedly connected to a second fixed box 6, one side of the first fixed box 5 is fixedly connected to a servo motor 7, the output end of the servo motor 7 is fixedly connected to a rotating shaft 8, the outer side of the rotating shaft 8 The first bevel gear 9 is rotatably connected to one side of the first fixed box 5, and the first bevel gear 9 is fixedly connected to the outside of the rotating shaft 8. A transmission shaft 10 is rotatably connected to one side of the other first fixed box 5, and a second bevel gear 11 is fixedly connected to one side of the transmission shaft 10. A linkage assembly 12 is arranged between the transmission shaft 10 and the rotating shaft 8. A third bevel gear 13 is meshedly connected to one side of the first bevel gear 9 and the second bevel gear 11, and a transmission column 14 is fixedly connected to the top of the third bevel gear 13. The transmission column 14 passes through and is rotatably connected to one box surface of the first fixed box 5 and the second fixed box 6. A transmission assembly 15 is arranged inside the second fixed box 6, and one side of the second fixed box 6 is rotatably connected There is a rotating column 16, one side of the rotating column 16 is fixedly connected to a clamping box 17, the clamping box 17 is rotatably connected to a rotating column 18 inside, one end of the rotating column 18 passes through the top surface of the clamping box 17 and is fixedly connected to a rotating disk 19, the outer side of the rotating column 18 is fixedly connected to a rotating cylinder 20, a clamping assembly 21 is arranged on the outer side of the rotating cylinder 20, and a limiting assembly 33 is arranged on the top of the rotating cylinder. The linkage assembly 12 includes a slide bar 22, two pairs of slide bars 22 are fixedly connected to the outer side of the transmission shaft 10, two pairs of strip grooves 23 are arranged inside the rotating shaft 8, and the slide bar 22 is slidably connected inside the strip groove 23, and the transmission assembly 15 includes a fourth bevel gear 24, The fourth bevel gear 24 is fixedly connected to the top of the transmission column 14, and the fourth bevel gear 24 is meshed with the fifth bevel gear 25, and the fifth bevel gear 25 is fixedly connected to one side of the rotating column 16. The clamping assembly 21 includes a fixed plate 26, a pair of the fixed plates 26 are fixedly connected to the outside of the rotating cylinder 20, a small hydraulic cylinder 27 is fixedly connected to the top of one of the fixed plates 26, and an extrusion block 28 is fixedly connected to the output end of the small hydraulic cylinder 27. The limiting assembly 33 includes a limiting hole 34, and the limiting hole 34 is arranged at the top of the rotating cylinder. The top of the clamping box 17 is provided with a threaded hole 35, and the threaded hole 35 is internally threadedly connected to the limiting pin 36.The bottom end of the limit pin 36 extends into the limit hole 34. Since the energy generated during laser welding is very large, the positioning effect of the laser welding clamping and positioning device is not good and is not stable enough, which will cause the workpiece to shake during the laser welding process, resulting in welding deviation, and easily increase the defective rate. When welding pipe fittings, it is necessary to rotate the pipe fittings to facilitate welding processing all over them. The existing ones are not convenient for rotating them, which will affect the quality and efficiency of pipe welding. Before grinding, the two workpieces to be welded are placed on the fixed plate 26 respectively, and the twisting rotating disk 19 drives the rotating column 18 to rotate. The rotating cylinder 20 outside the rotating column 18 rotates accordingly, so as to adjust the angle of the workpiece required for welding. After the angle is fixed, the twisting limit pin 36 is extended to the limit hole 34 to complete the limit, and the small hydraulic rod is started to drive the extrusion plate to squeeze and press the workpiece, and then the first electric telescopic rod 4 is turned on to push the slider 3 and the first fixed box on the slider 3 5 and the second fixed box 6 move, and at the same time, the slide bar 22 on the transmission shaft 10 slides in the strip groove 23 inside the rotating shaft 8, so that the two workpieces are close to each other. When they move to the appropriate position, the polished surfaces of the two workpieces are pressed against each other and fit tightly, so that laser welding can be performed. The four sides of the workpiece are pressed and fixed to ensure the stability of the workpiece during the welding process. The grinding strip 30 is used for smooth grinding before welding, which is better for the welding of the workpiece and improves the welding quality as a whole. When welding the tubular workpiece, the servo motor 7 is turned on to drive the rotating shaft 8 to rotate and drive the transmission shaft 10 to rotate, so that the first bevel gear 9 and the second bevel gear 11 follow the rotation, thereby driving the third bevel gear 13 to operate, and the transmission column 14 drives the fourth bevel gear 24 to rotate. Because the fourth bevel gear 24 is meshed and connected with the fifth bevel gear 25, the rotating column 16 drives the clamping box 17 to rotate as a whole, and the tubular workpiece is welded around, which improves the practicality of the device. ,

[0024] A second electric telescopic rod 29 is fixedly connected to one side of the L-shaped plate 31, and a frosting strip 30 is fixedly connected to one side of the second electric telescopic rod 29. Before grinding, the frosting strip 30 grinds the welding surfaces of the two workpieces to make them smooth, thereby improving the welding quality. After welding, the frosting strip 30 pushes the workpieces to improve work efficiency.

[0025] A rubber sleeve is arranged on the outside of the rotating disk 19 to increase the friction force, adjust the grinding angle of the workpiece, and improve the practicality of the device.

[0026] Working principle: before grinding, the two workpieces to be welded are placed on the fixed plate 26 respectively, the twisting rotating disk 19 drives the rotating column 18 to rotate, and the rotating cylinder 20 outside the rotating column 18 rotates accordingly, so as to adjust the welding angle of the workpieces. After the angle is fixed, the twisting limit pin 36 is extended to the inside of the limit hole 34 to complete the limit, and the small hydraulic rod is started to drive the extrusion plate to squeeze and press the workpiece, and then the first electric telescopic rod 4 is turned on to push the slider 3 and the first fixed box 5 and the second fixed box 6 on the slider 3 to move. While moving, the slide bar 22 on the transmission shaft 10 slides in the strip groove 23 inside the rotating shaft 8 to bring the two workpieces close to each other. When they move to the appropriate position, the second electric telescopic rod 29 is turned on to drive the grinding strip 30 to grind the welding surfaces of the two workpieces smooth. After grinding, the grinding strip 30 is withdrawn and the first electric telescopic rod is turned on. The retracted rod 4 allows the polished surfaces of the two workpieces to squeeze each other and fit tightly, so that laser welding can be carried out. The workpieces are pressed and fixed on all four sides to ensure the stability of the workpieces during the welding process. The frosted strip 30 is used for smooth polishing before welding, which is better for the welding of the workpieces and improves the welding quality as a whole. When welding the tubular workpiece, the servo motor 7 is turned on to drive the rotating shaft 8 to rotate and drive the transmission shaft 10 to rotate, so that the first bevel gear 9 and the second bevel gear 11 follow the rotation, thereby driving the third bevel gear 13 to operate, and the transmission column 14 drives the fourth bevel gear 24 to rotate. Because the fourth bevel gear 24 is meshed and connected with the fifth bevel gear 25, the rotating column 16 drives the clamping box 17 to rotate as a whole, and the tubular workpiece is welded around the workpiece to improve the practicality of the device. The frosted strip 30 pushes the workpiece after welding to improve work efficiency.

[0027] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0029] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A laser welding positioning and clamping device, characterized in that: The invention comprises a workbench (1), wherein an L-shaped plate (31) is fixedly connected to one side of the workbench (1), and a laser welding instrument (32) is fixedly connected to the top inner side of the L-shaped plate (31); a groove (2) is provided at the top of the workbench (1), and a pair of sliders (3) are slidably connected inside the groove (2); a first electric telescopic rod (4) is fixedly connected to one side of the slider (3) and one side of the inner wall of the groove (2); a first fixed box (5) is fixedly connected to the top of the slider (3), and a second fixed box (6) is fixedly connected to the top of the first fixed box (5); a servo motor (7) is fixedly connected to one side of the first fixed box (5), and a rotating shaft (8) is fixedly connected to the output end of the servo motor (7); the outer side of the rotating shaft (8) is rotatably connected to one side of the first fixed box (5), and the outer side of the rotating shaft (8) is fixedly connected to a first bevel gear (9); one side of the other first fixed box (5) is rotatably connected to a transmission shaft (10), and one side of the transmission shaft (10) is fixedly connected to a second bevel gear ( 11), a linkage assembly (12) is arranged between the transmission shaft (10) and the rotating shaft (8), a third bevel gear (13) is meshedly connected to one side of the first bevel gear (9) and the second bevel gear (11), a transmission column (14) is fixedly connected to the top of the third bevel gear (13), the transmission column (14) passes through and is rotatably connected to the middle of a box surface of the first fixed box (5) and the second fixed box (6), a transmission assembly (15) is arranged inside the second fixed box (6), and the second fixed box (6) is provided with a transmission assembly (15). (6) A rotating column (16) is rotatably connected to one side, a clamping box (17) is fixedly connected to one side of the rotating column (16), a rotating column (18) is rotatably connected inside the clamping box (17), one end of the rotating column (18) passes through the top surface of the clamping box (17) and is fixedly connected to a rotating disk (19), a rotating cylinder (20) is fixedly connected to the outside of the rotating column (18), a clamping assembly (21) is provided on the outside of the rotating cylinder (20), and a limiting assembly (33) is provided at the top of the rotating cylinder.

2. A laser welding positioning and clamping device according to claim 1, characterized in that: The linkage assembly (12) comprises slide bars (22), two pairs of slide bars (22) are fixedly connected to the outside of the transmission shaft (10), two pairs of strip grooves (23) are arranged inside the rotating shaft (8), and the slide bars (22) are slidably connected inside the strip grooves (23).

3. The laser welding positioning and clamping device according to claim 1, characterized in that: The transmission assembly (15) comprises a fourth bevel gear (24), the fourth bevel gear (24) is fixedly connected to the top of the transmission column (14), the fourth bevel gear (24) is meshedly connected to a fifth bevel gear (25), and the fifth bevel gear (25) is fixedly connected to one side of the rotating column (16).

4. The laser welding positioning and clamping device according to claim 1, characterized in that: The clamping assembly (21) comprises a fixing plate (26), a pair of the fixing plates (26) are fixedly connected to the outside of the rotating cylinder (20), a small hydraulic cylinder (27) is fixedly connected to the top end of one of the fixing plates (26), and an extrusion block (28) is fixedly connected to the output end of the small hydraulic cylinder (27).

5. The laser welding positioning and clamping device according to claim 1, characterized in that The limiting assembly (33) includes a limiting hole (34), and the limiting hole (34) is arranged at the top of the rotating cylinder. The top of the clamping box (17) is provided with a threaded hole (35), and the threaded hole (35) is internally threadedly connected to a limiting pin (36), and the bottom end of the limiting pin (36) extends into the limiting hole (34).

6. The laser welding positioning and clamping device according to claim 1, characterized in that: A second electric telescopic rod (29) is fixedly connected to one side of the L-shaped plate (31), and a frosting strip (30) is fixedly connected to one side of the second electric telescopic rod (29).

7. The laser welding positioning and clamping device according to claim 1, characterized in that: A rubber sleeve is arranged on the outer side of the rotating disk (19).

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