A laser welding device for weighing apparatus production and processing

Abstract

The application provides a laser welding device for weighing instrument production and processing, and relates to the field of welding fixing tools.The device comprises a supporting table, a driving mechanism arranged on the top of the supporting table, a second clamping assembly fixedly arranged on the top of a supporting column B, an auxiliary structure fixedly arranged on the outside of a connecting seat, an auxiliary frame and an adjusting seat, the auxiliary frame being fixedly arranged on one end of the outside of the connecting seat, the adjusting seat being slidingly arranged in the auxiliary frame through a dovetail groove, a first clamping assembly fixedly arranged on the outside of the adjusting seat, and a square tube to be welded clamped in the first clamping assembly. The auxiliary structure and the first clamping assembly can make the welding position of the square tube to be welded and the driving shaft located on the same axis, can flexibly rotate the workpiece with the actual welding position of the workpiece as the axis, and can conveniently perform circumferential welding on the welding position, thereby solving the problem that the workpiece cannot be flexibly rotated with the actual welding position of the workpiece as the axis.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding fixing tooling, in particular to a laser welding device for weighing instrument production and processing. BACKGROUND

[0002] In the field of weighing instrument production and processing, welding is a key process link for building weighing instrument structure, and welding operation of two groups of vertical pipes is more common; as an advanced welding technology with high precision and high efficiency, laser welding becomes an ideal choice for vertical pipe welding due to its significant advantages such as energy density concentration.

[0003] In the conventional laser welding device, when fixing two groups of vertically welded pipes, the structure design makes the position of the pipes fixed after being fixed, and lacks effective rotating mechanism; in the actual welding process, the welding position often needs to be circumferentially welded around the pipe to ensure the integrity and quality of the welding; but due to the fact that the existing tooling cannot flexibly rotate the workpiece around the actual welding position of the workpiece, the welder can only complete the welding work of the weld above the welding position first, then overturn the workpiece as a whole, and then continue to carry out welding operation on the remaining weld, thereby reducing the welding efficiency. SUMMARY

[0004] Therefore, the present application provides a laser welding device for weighing instrument production and processing, which has a driving mechanism, an auxiliary structure and a first clamping assembly, can adjust the longitudinal position of the to-be-welded square pipe by using the auxiliary structure, make the welding position of the to-be-welded square pipe and the driving shaft located on the same axis, and then can flexibly rotate the workpiece around the actual welding position of the workpiece, facilitate circumferential welding of the welding position, and improve the welding efficiency.

[0005] The present application provides a laser welding device for weighing instrument production and processing, which specifically comprises: a support table; the support table top is fixedly provided with a support column A and a support column B, the support column A top is fixedly provided with a driving mechanism, and the support table top is fixedly provided with a welding assembly; the support column B top is fixedly provided with a second clamping assembly, and the second clamping assembly inside clamps a to-be-welded round pipe;

[0006] The driving mechanism comprises a driving table, a fixed seat, a driving shaft and a connecting seat; the driving table is fixedly arranged at the top of the support column A; the fixed seat is fixedly arranged at one side of the top of the driving table; the driving shaft is rotatably arranged in the fixed seat; the connecting seat is fixedly arranged at one end of the driving shaft; an auxiliary structure is fixedly arranged outside the connecting seat, and the auxiliary structure comprises an auxiliary frame and an adjusting seat; one end of the auxiliary frame is fixedly arranged outside the connecting seat; the adjusting seat is slidably arranged in the auxiliary frame through a dovetail groove; a first clamping assembly is fixedly arranged outside the adjusting seat, and a to-be-welded square tube is clamped in the first clamping assembly; the to-be-welded square tube is arranged vertically to the to-be-welded round tube, and the to-be-welded round tube is located on the same axis as the driving shaft.

[0007] Further, the driving mechanism further comprises a limiting seat, a guide rail, a sliding frame, a toothed plate, an electric cylinder and a driving seat; the limiting seat is fixedly arranged at the top of the driving table, and the limiting seat is symmetrically arranged with two groups; the guide rail is fixedly arranged between the two groups of limiting seats; the sliding frame is slidably arranged outside the top of the guide rail, and the sliding frame is located between the two groups of limiting seats; the toothed plate is fixedly arranged at the top of the sliding frame; the electric cylinder is fixedly arranged at the top of the driving table; the driving seat is fixedly arranged outside the telescopic end of the electric cylinder, and the driving seat is fixedly connected with the sliding frame.

[0008] Further, the driving mechanism further comprises a connecting gear; the connecting gear is fixedly arranged outside the other end of the driving shaft, and the connecting gear is engaged with the toothed plate.

[0009] Further, the driving mechanism further comprises a reinforcing seat A, a reinforcing arm and a reinforcing seat B; the reinforcing seat A is fixedly arranged outside the driving shaft; the reinforcing arm is fixedly arranged outside the reinforcing seat A, and the reinforcing arm is arranged in an inclined manner; the reinforcing seat B is fixedly arranged between the other end of the reinforcing arm and the auxiliary frame.

[0010] Further, the auxiliary structure further comprises an adjusting screw and a reinforcing column; the adjusting screw is rotatably arranged in the auxiliary frame, and a hand wheel is fixedly arranged at the top end of the adjusting screw; the adjusting screw is threadedly connected in the adjusting seat; the reinforcing column is fixedly arranged at the top and the bottom of the auxiliary frame, and the reinforcing column is symmetrically arranged with four groups.

[0011] Further, the first clamping assembly comprises an adjusting frame, a reinforcing sliding rail, a double-headed screw A and a moving seat; the adjusting frame is fixedly arranged outside the adjusting seat, and a rib plate is arranged between the adjusting frame and the adjusting seat; the reinforcing sliding rail is fixedly arranged at the top and the bottom of the adjusting frame, and the reinforcing sliding rail is slidably arranged in the reinforcing column; the double-headed screw A is rotatably arranged in the adjusting frame, and a hand wheel is fixedly arranged at the top end of the double-headed screw A; the moving seat is slidably arranged in the adjusting frame through a dovetail groove, and the moving seat is threadedly connected outside the double-headed screw A.

[0012] Further, the first clamping assembly further comprises: a clamping frame A, a double-headed screw B, a clamping seat A, a clamping plate, a non-slip pad and an end plate; the clamping frame A is fixedly arranged outside the moving seat, and the clamping frame A and the moving seat are both symmetrically provided with two groups; the double-headed screw B is rotatably arranged inside the clamping frame A, and the top end of the double-headed screw B is fixedly provided with a hand wheel; the clamping seat A is slidably arranged inside the clamping frame A, and the clamping seat A is arranged outside the double-headed screw B through threaded connection; the clamping plate is fixedly arranged outside the clamping seat A, and the clamping plate and the clamping seat A are both symmetrically provided with four groups, and the four groups of clamping plates clamp the to-be-welded square tube; the non-slip pad is fixedly arranged inside the clamping plate, and the outside of the non-slip pad is in close contact with the outside of the to-be-welded square tube; and the end plate is fixedly arranged outside the clamping frame A, and the outside of the end plate is in close contact with the end of the to-be-welded square tube.

[0013] Further, the second clamping assembly comprises: a clamping frame B, a double-headed screw C, a guide rod and a clamping seat B; the clamping frame B is fixedly arranged on the top of the support column B; the double-headed screw C is rotatably arranged inside the clamping frame B, and the top end of the double-headed screw C is fixedly provided with a hand wheel; the guide rod is fixedly arranged inside the clamping frame B; and the clamping seat B is slidably arranged outside the guide rod, and the clamping seat B is arranged outside the double-headed screw C through threaded connection.

[0014] Further, the second clamping assembly further comprises: a fixed plate and a clamping roller; the fixed plate is fixedly arranged outside the clamping seat B, and the fixed plate and the clamping seat B are both symmetrically provided with two groups; the fixed plate is arranged in an arc-shaped structure, and the two groups of fixed plates clamp the to-be-welded round tube; the clamping roller is rotatably arranged inside the fixed plate, and the clamping roller is arranged in an annular array; the clamping roller is arranged in parallel with the to-be-welded round tube, and the outside of the clamping roller is in close contact with the outside of the to-be-welded round tube.

[0015] Further, the welding assembly comprises: a welding frame, an adjustable support and a laser welding gun; the welding frame is fixedly arranged on the top of the support table; the adjustable support is fixedly arranged on the top of the welding frame; and the laser welding gun is fixedly mounted on the inside of the top of the adjustable support.

[0016] Advantages

[0017] 1. By arranging the adjusting screw rod and the adjusting seat, when the adjusting screw rod is rotated, the adjusting frame drives the to-be-welded square tube to move horizontally through the clamping frame A and the clamping plate; then the welding position on the to-be-welded square tube, the end of the to-be-welded round tube and the driving shaft are all located on the same axis; the driving mechanism drives the to-be-welded square tube to rotate flexibly with the actual welding position of the to-be-welded square tube as the axis; then the circumferential welding of the welding position can be completed without frequent turning of the workpiece, the welding time is greatly shortened, the welding efficiency is improved; meanwhile, the consistency of the welding position and the continuity of the welding are ensured, the welding quality is effectively improved, and the generation of welding defects is reduced.

[0018] 2、The present application, by being provided with the annular array type clamping roller, can prevent the horizontal movement of the to-be-welded round pipe after clamping, and can also enable the to-be-welded round pipe to rotate axially, thereby laying a foundation for the rotational welding of the to-be-welded square pipe and the to-be-welded round pipe.

[0019] 3、The present application, by being provided with the double-end screw C and the guide rod, can enable the two groups of clamping seats B to move reversely when the double-end screw C rotates, thereby enabling the to-be-welded round pipe with different radii to be clamped, and by being provided with the double-end screw A and the moving seat, the spacing between the two groups of clamping frames A can be adjusted according to the specific length of the to-be-welded square pipe, and by being provided with the double-end screw B and the clamping seat A, the clamping plate can clamp and fix the to-be-welded square pipe with different sizes through the anti-skid pad, thereby enabling the workpiece to be fixed according to the actual specifications, and enhancing the practicability of the fixing tool.

[0020] 4、The present application, by being provided with the reinforcing arm, the reinforcing seat A and the reinforcing seat B, can construct a stable mechanical support structure, effectively enhance the connection strength between the auxiliary frame and the driving shaft, thereby ensuring the auxiliary frame to have excellent stability during rotation, and minimizing the shaking and deviation, and at the same time, by means of the precise cooperation of the reinforcing slide rail and the reinforcing column, the rotation of the auxiliary frame driving the adjusting frame is provided with reliable guidance and support, so that the whole rotation process is smooth and stable, thereby ensuring the to-be-welded square pipe to always maintain a stable state during rotation, and laying a solid foundation for high-quality welding operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0022] The drawings described in the following merely relate to some embodiments of the present application, and are not a limitation on the present application.

[0023] In the drawings:

[0024] Figure 1 is the overall structure schematic diagram of the present application.

[0025] Figure 2 is the structure schematic diagram of the to-be-welded square pipe and the to-be-welded round pipe fixed position of the present application.

[0026] Figure 3 is the upper surface structure schematic diagram of the driving table of the present application.

[0027] Figure 4 is the structure schematic diagram of the reinforcing arm of the present application.

[0028] Figure 5 is the connection structure schematic diagram of the auxiliary structure and the first clamping assembly of the present application.

[0029] Figure 6 is a structural schematic diagram of an auxiliary structure of the present application.

[0030] Figure 7 is a structural schematic diagram of a first clamping assembly of the present application.

[0031] Figure 8 is a split structural schematic diagram of an end plate of the present application.

[0032] Figure 9 is a structural schematic diagram of a second clamping assembly of the present application.

[0033] Figure 10 is a structural schematic diagram of a clamping roller of the present application.

[0034] Figure 11 is a structural schematic diagram of an adjustable support and a laser welding gun of the present application.

[0035] List of reference signs

[0036] 1, support table; 101, support column A; 102, support column B;

[0037] 2, driving mechanism; 201, driving table; 202, limiting seat; 203, guide rail; 204, sliding frame; 205, toothed plate; 206, electric cylinder; 207, driving seat; 208, fixed seat; 209, driving shaft; 2010, engagement gear; 2011, engagement seat; 2012, reinforcing seat A; 2013, reinforcing arm; 2014, reinforcing seat B;

[0038] 3, auxiliary structure; 301, auxiliary frame; 302, adjusting screw; 303, adjusting seat; 304, reinforcing column;

[0039] 4, first clamping assembly; 401, adjusting frame; 402, reinforcing sliding rail; 403, double-headed screw A; 404, moving seat; 405, clamping frame A; 406, double-headed screw B; 407, clamping seat A; 408, clamping plate; 409, non-slip pad; 4010, end plate;

[0040] 5, square tube to be welded;

[0041] 6, second clamping assembly; 601, clamping frame B; 602, double-headed screw C; 603, guide rod; 604, clamping seat B; 605, fixed plate; 606, clamping roller;

[0042] 7, round tube to be welded;

[0043] 8, welding assembly; 801, welding frame; 802, adjustable support; 803, laser welding gun. DETAILED DESCRIPTION

[0044] In order to make the purpose, scheme and advantages of the technical solutions of the present application more clear, the technical solutions of the embodiments of the present application will be described clearly and completely in the following with reference to the drawings of specific embodiments of the present application. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0045] Embodiment one: please refer to Figures 1 to 11 as shown:

[0046] The application provides a kind of laser welding device for weighing apparatus production and processing, including support table 1;Support table 1 top is fixedly provided with support column A101 with support column B102, and support column A101 top is fixedly provided with drive mechanism 2, and support table 1 top is fixedly provided with welding assembly 8;Support column B102 top is fixedly provided with second clamping assembly 6, and second clamping assembly 6 inside clamps the pipe to be welded 7;Welding assembly 8 includes: welding frame 801, adjustable support 802 and laser welding gun 803;Welding frame 801 is fixedly arranged on the top of support table 1;Adjustable support 802 is fixedly arranged on the top of welding frame 801;Laser welding gun 803 is fixedly installed in the inside of adjustable support 802 top.

[0047] In the embodiment, the driving mechanism 2 comprises a driving table 201, a fixed seat 208, a driving shaft 209 and a connecting seat 2011. The driving table 201 is fixedly arranged on the top of the supporting column A101. The fixed seat 208 is fixedly arranged on the top of one side of the driving table 201. The driving shaft 209 is rotatably arranged in the fixed seat 208. The connecting seat 2011 is fixedly arranged on one end of the driving shaft 209. An auxiliary structure 3 is fixedly arranged on the outside of the connecting seat 2011, and the auxiliary structure 3 comprises an auxiliary frame 301 and an adjusting seat 303. One end of the auxiliary frame 301 is fixedly arranged on the outside of the connecting seat 2011. The adjusting seat 303 is slidingly arranged in the auxiliary frame 301 through a dovetail groove. A first clamping assembly 4 is fixedly arranged on the outside of the adjusting seat 303, and the first clamping assembly 4 clamps a to-be-welded square tube 5 in the first clamping assembly 4. The to-be-welded square tube 5 is arranged vertically to a to-be-welded round tube 7, and the to-be-welded round tube 7 and the driving shaft 209 are located on the same axis. The driving mechanism 2 further comprises a limiting seat 202, a guide rail 203, a sliding frame 204, a toothed plate 205, an electric cylinder 206 and a driving seat 207. The limiting seat 202 is fixedly arranged on the top of the driving table 201, and the limiting seat 202 is symmetrically arranged with two groups. The guide rail 203 is fixedly arranged between the two groups of limiting seats 202. The sliding frame 204 is slidingly arranged on the top of the outside of the guide rail 203, and the sliding frame 204 is located between the two groups of limiting seats 202. The toothed plate 205 is fixedly arranged on the top of the sliding frame 204. The electric cylinder 206 is fixedly arranged on the top of the driving table 201. The driving seat 207 is fixedly arranged on the outside of the telescopic end of the electric cylinder 206, and the driving seat 207 is fixedly connected with the sliding frame 204. The driving mechanism 2 further comprises a connecting gear 2010, a reinforcing seat A2012, a reinforcing arm 2013 and a reinforcing seat B2014. The connecting gear 2010 is fixedly arranged on the outside of the other end of the driving shaft 209, and the connecting gear 2010 is engaged with the toothed plate 205. The reinforcing seat A2012 is fixedly arranged on the outside of the driving shaft 209. The reinforcing arm 2013 is fixedly arranged on the outside of the reinforcing seat A2012, and the reinforcing arm 2013 is arranged in an inclined manner. The reinforcing seat B2014 is fixedly arranged between the other end of the reinforcing arm 2013 and the auxiliary frame 301. The auxiliary structure 3 further comprises an adjusting lead screw 302 and a reinforcing column 304. The adjusting lead screw 302 is rotatably arranged in the auxiliary frame 301, and a hand wheel is fixedly arranged on the top end of the adjusting lead screw 302. The adjusting lead screw 302 is arranged in the adjusting seat 303 through threaded connection. The reinforcing column 304 is fixedly arranged on the top and the bottom of the auxiliary frame 301, and the reinforcing column 304 is symmetrically arranged with four groups. The specific function is that the adjusting lead screw 302 and the adjusting seat 303 are arranged, so that the adjusting frame 401 drives the to-be-welded square tube 5 to move horizontally through the clamping frame A405 and the clamping plate 408 when the adjusting lead screw 302 is rotated. The welding position on the to-be-welded square tube 5, the end of the to-be-welded round tube 7 and the driving shaft 209 are located on the same axis. The driving mechanism 2 drives the to-be-welded square tube 5 to rotate flexibly with the actual welding position of the to-be-welded square tube 5 as the axis.

[0048] Embodiment Two: Please refer to Figures 5 to 8 As shown: on the basis of embodiment one, the first clamping assembly 4 comprises: an adjusting frame 401, a reinforcing slide rail 402, a double-headed screw A 403, a moving seat 404, a clamping frame A 405, a double-headed screw B 406, a clamping seat A 407, a clamping plate 408, an anti-skid pad 409 and an end plate 4010; the adjusting frame 401 is fixedly arranged outside the adjusting seat 303, and a rib plate is arranged between the adjusting frame 401 and the adjusting seat 303; the reinforcing slide rail 402 is fixedly arranged at the top and bottom of the adjusting frame 401, and the reinforcing slide rail 402 is slidingly arranged inside the reinforcing column 304; the double-headed screw A 403 is rotatably arranged inside the adjusting frame 401, and a hand wheel is fixedly arranged at the top end of the double-headed screw A 403; the moving seat 404 is slidingly arranged inside the adjusting frame 401 through a dovetail groove, and the moving seat 404 is arranged outside the double-headed screw A 403 through threaded connection; the clamping frame A 405 is fixedly arranged outside the moving seat 404, and the clamping frame A 405 and the moving seat 404 are symmetrically arranged in two groups; the double-headed screw B 406 is rotatably arranged inside the clamping frame A 405, and a hand wheel is fixedly arranged at the top end of the double-headed screw B 406; the clamping seat A 407 is slidingly arranged inside the clamping frame A 405, and the clamping seat A 407 is arranged outside the double-headed screw B 406 through threaded connection; the clamping plate 408 is fixedly arranged outside the clamping seat A 407, and the clamping plate 408 and the clamping seat A 407 are symmetrically arranged in four groups, and the four groups of clamping plates 408 clamp the to-be-welded square pipe 5 therebetween; the anti-skid pad 409 is fixedly arranged inside the clamping plate 408, and the outer side of the anti-skid pad 409 is in close contact with the outer side of the to-be-welded square pipe 5; the end plate 4010 is fixedly arranged outside the clamping frame A 405, and the outer side of the end plate 4010 is in close contact with the end portion of the to-be-welded square pipe 5; and the specific action is that: the double-headed screw A 403 and the moving seat 404 can adjust the distance between the two groups of clamping frames A 405 according to the specific length of the to-be-welded square pipe 5; the double-headed screw B 406 and the clamping seat A 407 can make the clamping plate 408 clamp and fix the to-be-welded square pipe 5 of different sizes through the anti-skid pad 409.

[0049] Embodiment Three: Please refer to Figure 3 and Figure 10As shown: on the basis of example one and example two, the second clamping assembly 6 comprises: a clamping frame B601, a double-headed screw C602, a guide rod 603, a clamping seat B604, a fixed plate 605 and a clamping roller 606; the clamping frame B601 is fixedly arranged at the top of the support column B102; the double-headed screw C602 is rotatably arranged in the clamping frame B601, and the top end of the double-headed screw C602 is fixedly provided with a hand wheel; the guide rod 603 is fixedly arranged in the clamping frame B601; the clamping seat B604 is slidably arranged outside the guide rod 603, and the clamping seat B604 is arranged outside the double-headed screw C602 through threaded connection; the fixed plate 605 is fixedly arranged outside the clamping seat B604, and the fixed plate 605 and the clamping seat B604 are both symmetrically provided with two groups; the fixed plate 605 is arranged in an arc-shaped structure, and the two groups of fixed plates 605 clamp the to-be-welded circular pipe 7 therebetween; the clamping roller 606 is rotatably arranged in the fixed plate 605, and the clamping roller 606 is arranged in an annular array; the clamping roller 606 is arranged in parallel with the to-be-welded circular pipe 7, and the outside of the clamping roller 606 is in close contact with the outside of the to-be-welded circular pipe 7; and the specific action is that: through the arrangement of the annular array clamping roller 606, the to-be-welded circular pipe 7 can be prevented from moving horizontally after being clamped, and the to-be-welded circular pipe 7 can be axially rotated at the same time, thereby laying a foundation for the rotational welding of the to-be-welded square pipe 5 and the to-be-welded circular pipe 7.

[0050] The specific use and role of the embodiment are as follows: in the application, the to-be-welded square tube 5 is placed between the two groups of end plates 4010, then the double-headed screw A 403 is rotated, the double-headed screw A 403 drives the two groups of clamping frames A 405 to move reversely through the moving seat 404, the end plates 4010 are preliminarily attached to the end portions of the to-be-welded square tube 5, then the double-headed screw B 406 is rotated, the double-headed screw B 406 drives the two groups of clamping plates 408 to move reversely through the clamping seat A 407, the clamping plates 408 clamp and fix the to-be-welded square tube 5 through the anti-skid pads 409, the adjusting screw 302 is rotated, the adjusting screw 302 drives the adjusting frame 401 to move horizontally through the adjusting seat 303, so that the welding position of the to-be-welded square tube 5 is located on the same axis as the driving shaft 209, then the to-be-welded round tube 7 is placed between the two groups of fixed plates 605, and the end portion of the to-be-welded round tube 7 is attached to the welding position of the to-be-welded square tube 5, then the double-headed screw C 602 is rotated, the double-headed screw C 602 drives the two groups of clamping seats B 604 to move reversely through the guide rods 603, so that the two groups of fixed plates 605 clamp the to-be-welded round tube 7 through the clamping rollers 606, and the horizontal position of the to-be-welded round tube 7 cannot move, then the laser welding gun 803 is adjusted to the welding position through the adjustable support 802, the to-be-welded round tube 7 and the to-be-welded square tube 5 are spot-welded through the laser welding gun 803, so that the to-be-welded round tube 7 and the to-be-welded square tube 5 are preliminarily fixed, then the electric cylinder 206 is started, the electric cylinder 206 drives the gear plate 205 to move horizontally through the driving seat 207, the sliding frame 204 and the guide rail 203, the gear plate 205 drives the driving shaft 209 to rotate through the engagement gear 2010, the driving shaft 209 drives the adjusting frame 401 to rotate through the engagement seat 2011, the auxiliary frame 301, the adjusting seat 303 and the reinforcing column 304, the adjusting frame 401 drives the to-be-welded square tube 5 and the to-be-welded round tube 7 to rotate around the welding position, and the to-be-welded round tube 7 rotates stably through the clamping rollers 606, meanwhile, the welding position of the to-be-welded round tube 7 and the to-be-welded square tube 5 is circumferentially welded through the laser welding gun 803, so that the to-be-welded round tube 7 and the to-be-welded square tube 5 are welded completely, the reinforcing arm 2013, the reinforcing seat A 2012 and the reinforcing seat B 2014 can effectively enhance the connection strength between the auxiliary frame 301 and the driving shaft 209, thereby ensuring that the auxiliary frame 301 has excellent stability during rotation, meanwhile, the accurate cooperation of the reinforcing slide rail 402 and the reinforcing column 304 provides reliable guidance and support for the rotation of the auxiliary frame 301 driving the adjusting frame 401.

Claims

1. A laser welding device for weighing machine production and processing, characterized by, Include: Supporting table (1); The supporting table (1) top is fixedly provided with support column A (101) and support column B (102), and the top of support column A (101) is fixedly provided with driving mechanism (2), and the top of supporting table (1) is fixedly provided with welding assembly (8);The top of support column B (102) is fixedly provided with second clamping assembly (6), and the inside of second clamping assembly (6) clamps the pipe to be welded (7); The driving mechanism (2) includes: driving table (201), fixed seat (208), drive shaft (209) and link seat (2011);Driving table (201) is fixedly arranged on the top of support column A (101);Fixed seat (208) is fixedly arranged on the top of driving table (201) one side;Drive shaft (209) is rotatably arranged in fixed seat (208);Link seat (2011) is fixedly arranged on one end of drive shaft (209);The outside of link seat (2011) is fixedly provided with auxiliary structure (3), and the auxiliary structure (3) includes: auxiliary frame (301) and adjusting seat (303);Auxiliary frame (301) one end is fixedly arranged on the outside of link seat (2011);Adjusting seat (303) is slidably arranged in auxiliary frame (301) by dovetail groove;The outside of adjusting seat (303) is fixedly provided with first clamping assembly (4), and the inside of first clamping assembly (4) clamps the square pipe to be welded (5);The square pipe to be welded (5) and the pipe to be welded (7) are vertically arranged, and the pipe to be welded (7) and drive shaft (209) are located on the same axis line; The auxiliary structure (3) further comprises: an adjusting screw rod (302) and a reinforcing column (304); the adjusting screw rod (302) is rotationally arranged in the auxiliary frame (301), and a hand wheel is fixedly arranged at the top end of the adjusting screw rod (302); the adjusting screw rod (302) is arranged in the adjusting seat (303) through threaded connection; the reinforcing column (304) is fixedly arranged at the top and bottom of the auxiliary frame (301), and the reinforcing column (304) is symmetrically arranged in four groups; the first clamping assembly (4) comprises: an adjusting frame (401), a reinforcing sliding rail (402), a double-headed screw rod A (403) and a moving seat (404); the adjusting frame (401) is fixedly arranged outside the adjusting seat (303), and a rib plate is arranged between the adjusting frame (401) and the adjusting seat (303); the reinforcing sliding rail (402) is fixedly arranged at the top and bottom of the adjusting frame (401), and the reinforcing sliding rail (402) is slidingly arranged in the reinforcing column (304); the double-headed screw rod A (403) is rotationally arranged in the adjusting frame (401), and a hand wheel is fixedly arranged at the top end of the double-headed screw rod A (403); the moving seat (404) is slidingly arranged in the adjusting frame (401) through a dovetail groove, and the moving seat (404) is arranged outside the double-headed screw rod A (403) through threaded connection; the first clamping assembly (4) further comprises: a clamping frame A (405), a double-headed screw rod B (406), a clamping seat A (407), a clamping plate (408), an anti-skid pad (409) and an end plate (4010); the clamping frame A (405) is fixedly arranged outside the moving seat (404), and the clamping frame A (405) and the moving seat (404) are both symmetrically arranged in two groups; the double-headed screw rod B (406) is rotationally arranged in the clamping frame A (405), and a hand wheel is fixedly arranged at the top end of the double-headed screw rod B (406); the clamping seat A (407) is slidingly arranged in the clamping frame A (405), and the clamping seat A (407) is arranged outside the double-headed screw rod B (406) through threaded connection; the clamping plate (408) is fixedly arranged outside the clamping seat A (407), and the clamping plate (408) and the clamping seat A (407) are both symmetrically arranged in four groups, and the four clamping plates (408) clamp the to-be-welded square pipe (5) therebetween; the anti-skid pad (409) is fixedly arranged inside the clamping plate (408), and the outer side of the anti-skid pad (409) is fitted with the outer side of the to-be-welded square pipe (5); the end plate (4010) is fixedly arranged outside the clamping frame A (405), and the outer side of the end plate (4010) is fitted with the end portion of the to-be-welded square pipe (5).

2. The laser welding device for weighing machine production and processing according to claim 1, characterized in that: The driving mechanism (2) further comprises: a limiting seat (202), a guide rail (203), a sliding frame (204), a toothed plate (205), an electric cylinder (206) and a driving seat (207); the limiting seat (202) is fixedly arranged on the top of the driving table (201), and the limiting seat (202) is symmetrically arranged with two groups; the guide rail (203) is fixedly arranged between the two groups of limiting seats (202); the sliding frame (204) is slidingly arranged on the top of the guide rail (203) and outside, and the sliding frame (204) is located between the two groups of limiting seats (202); the toothed plate (205) is fixedly arranged on the top of the sliding frame (204); the electric cylinder (206) is fixedly arranged on the top of the driving table (201); the driving seat (207) is fixedly arranged outside the telescopic end of the electric cylinder (206), and the driving seat (207) is fixedly connected with the sliding frame (204).

3. The laser welding device for weighing machine production and processing according to claim 2, characterized in that: The driving mechanism (2) further comprises: an engaging gear (2010); the engaging gear (2010) is fixedly arranged outside the other end of the driving shaft (209), and the engaging gear (2010) is engaged with the toothed plate (205).

4. The laser welding device for weighing machine production and processing according to claim 1, characterized in that: The driving mechanism (2) further comprises: a reinforcing seat A (2012), a reinforcing arm (2013) and a reinforcing seat B (2014); the reinforcing seat A (2012) is fixedly arranged outside the driving shaft (209); the reinforcing arm (2013) is fixedly arranged outside the reinforcing seat A (2012), and the reinforcing arm (2013) is arranged in an inclined manner; the reinforcing seat B (2014) is fixedly arranged between the reinforcing arm (2013) and the other end of the auxiliary frame (301).

5. The laser welding device for weighing machine production and processing according to claim 1, characterized in that: The second clamping assembly (6) comprises: a clamping frame B (601), a double-headed screw C (602), a guide rod (603) and a clamping seat B (604); the clamping frame B (601) is fixedly arranged on the top of the supporting column B (102); the double-headed screw C (602) is rotatably arranged in the clamping frame B (601), and a hand wheel is fixedly arranged at the top end of the double-headed screw C (602); the guide rod (603) is fixedly arranged in the clamping frame B (601); the clamping seat B (604) is slidingly arranged outside the guide rod (603) and is arranged outside the double-headed screw C (602) through threaded connection.

6. A laser welding device for weighing machine production and processing according to claim 5, characterized in that: The second clamping assembly (6) further comprises: a fixed plate (605) and a clamping roller (606); the fixed plate (605) is fixedly arranged outside the clamping seat B (604), and the fixed plate (605) and the clamping seat B (604) are both symmetrically arranged with two groups; the fixed plate (605) is arranged in an arc-shaped structure, and the two groups of fixed plates (605) clamp the to-be-welded circular pipe (7) therebetween; the clamping roller (606) is rotatably arranged in the fixed plate (605), and the clamping roller (606) is arranged in an annular array; the clamping roller (606) is arranged in parallel with the to-be-welded circular pipe (7), and the outside of the clamping roller (606) is in close contact with the outside of the to-be-welded circular pipe (7).

7. The laser welding device for weighing machine production and processing according to claim 1, characterized in that: The welding assembly (8) comprises a welding frame (801), an adjustable support (802) and a laser welding gun (803); the welding frame (801) is fixedly arranged on the top of the support table (1); the adjustable support (802) is fixedly arranged on the top of the welding frame (801); and the laser welding gun (803) is fixedly arranged on the inner side of the top of the adjustable support (802).

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