Welding machine capable of achieving automatic limiting

Abstract

The utility model belongs to the technical field of welding production equipment, and discloses an automatic limiting welding machine which comprises a clamping assembly mounted on the left side of the top of a rack. A working assembly is mounted on the top right side of the rack; the upper end of the rack is fixedly connected with the conveying assembly. The third push block is close to the longitudinal L-shaped plate, the fourth push block is close to the transverse L-shaped plate, an automatic clamping structure is formed, a plurality of clamping structures can be controlled at the same time through movement of the air cylinder, and the clamping structures can be clamped by adjusting the longitudinal L-shaped plate to be connected with different longitudinal screw holes in a matched mode. The transverse L-shaped plate is connected with different transverse screw holes in a matched mode so that the clamping stroke of the clamping mechanism can be adjusted, the clamping mechanism can adapt to various workpieces, and cost is reduced. According to the utility model, through the control of the lead screw motor, the welding parts can be accurately positioned, and the welding requirements of a plurality of welding parts can be met; and through the drying shell and the drying rod, the to-be-machined part can be preheated, and the defects such as cracks are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of welding production equipment, in particular to a welding machine capable of automatically limiting position. Background Art

[0002] Laser welding machines use high-energy laser pulses to locally heat the surface of the welding material. The energy of the laser will melt the material through heat conduction to form a fixed molten pool. Laser welding is a new type of welding method, mainly for thin-walled materials and precision parts. It can achieve the advantages of deep welding depth, small welding width, small heat-affected area, small deformation, and fast welding speed for splicing welding, spot welding, and sealing welding. With the development of science and technology and the upgrade of laser devices, high-power welding can be achieved and the thickness of welding materials can be increased.

[0003] Chinese patent CN113523563B provides rollers to facilitate welding of plates with uneven surfaces. The cooperation of the limit groove and the limit block can improve the stability of the movement of the inner rod. Furthermore, the ball groove and the ball can make the ball and the limit block roll and rub, thereby reducing the movement resistance of the inner rod, making the movement process of the welding head more flexible, thereby improving the welding quality.

[0004] However, the existing welding gun movement method can only weld two parallel workpieces, and cannot achieve welding of the trolley chassis, resulting in higher requirements on the workpiece and higher costs.

[0005] Based on this, the utility model designs a welding machine capable of automatic limiting to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a welding machine capable of automatically limiting position.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A welding machine capable of automatically limiting position, comprising a frame;

[0009] The upper end of the frame is fixedly connected with a transmission assembly for processing the underframe of the trolley;

[0010] A working assembly for processing the trolley chassis is installed on the top right side of the frame;

[0011] A clamping assembly for clamping the trolley chassis is installed on the top left side of the transmission assembly.

[0012] The clamping assembly comprises a longitudinal clamping assembly and a transverse clamping assembly; the longitudinal clamping assembly is installed on the transmission assembly; and the transverse clamping assembly is installed on the longitudinal clamping assembly.

[0013] Furthermore, the transmission component is a conveyor belt.

[0014] Furthermore, the longitudinal clamping assembly includes a cylinder, a connecting rod, a first push block, a second push block, a third push block, a first spring, a longitudinal L-shaped plate, a longitudinal screw hole, a limit groove, a limit slider and a base; the top of the movable end of the transmission assembly is fixedly connected to the bottom of the base; the left and right side walls of the base are respectively fixedly connected to the cylinder; the output ends of the cylinder are respectively fixedly connected to the connecting rod; the tops of the connecting rods are respectively fixedly connected to the bottom of the first push block; the front and rear side walls of the first push block are respectively in contact with the inclined surface of the second push block; the outer end side walls of the second push block are evenly divided Multiple groups of first springs are installed separately, one end of the first spring is fixedly connected to the outer end side wall of the second push block, and the other end of the first spring is fixedly connected to the side wall of the third push block respectively; there are four groups of longitudinal L-shaped plates that are symmetrical front and back, and the bottoms of the longitudinal L-shaped plates are fixedly connected to the top of the base; the lower ends of the second push block and the third push block are respectively fixedly connected to the limiting slider, and the top of the base is provided with multiple groups of limiting grooves connected to the limiting sliding that cooperate with the limiting slider; the end of the first push block away from the connecting rod is connected to the transverse clamping assembly, and the top of the base is connected to the transverse clamping assembly.

[0015] Furthermore, a plurality of groups of longitudinal screw holes are provided on the top of the base, and the bottoms of the longitudinal L-shaped plates are detachably connected to the longitudinal screw holes by bolts.

[0016] Furthermore, the transverse clamping assembly includes a second spring, a transverse L-shaped plate, a transverse screw hole and a fourth push block; one end of the second spring is fixedly connected to the end of the first push block away from the connecting rod, and the other end of the second spring is fixedly connected to the side wall of the fourth push block; the bottom of the fourth push block is in contact with the top of the base; there are two groups of transverse L-shaped plates that are symmetrical on the left and right, and the bottoms of the transverse L-shaped plates are fixedly connected to the top of the base.

[0017] Furthermore, a plurality of groups of transverse screw holes are provided on the top of the base, and the bottoms of the transverse L-shaped plates are detachably connected to the transverse screw holes through bolts.

[0018] Furthermore, the working assembly includes a drying assembly and a welding assembly; the drying assembly is installed on the top of the frame, and the welding assembly is installed on the drying assembly.

[0019] Furthermore, the drying component includes a drying shell, a drying rod and a support plate; the support plate is fixedly connected to the top of the frame; the front and rear side walls of the drying shell and the front and rear inner walls of the support plate are fixedly connected; the upper end of the support plate is fixedly connected to the welding component; and multiple groups of drying rods are fixedly connected to the inside of the drying shell.

[0020] Furthermore, the drying rods are evenly distributed along the front-to-back direction.

[0021] Furthermore, the welding assembly includes a first motor, a first slider, a first screw rod, a bracket, a mounting plate, a second motor, a second screw rod, a second slider and a welding gun; the first motor is fixedly connected to the upper end of the side wall of the support plate; one end of the first screw rod is fixedly connected to the output end of the first motor, and the other end of the first screw rod is rotatably connected to the upper end of the side wall of the support plate; the front and rear side walls of the bracket are respectively fixedly connected to the front and rear inner walls of the support plate; the lower end of the first slider is threadedly connected to the side wall of the first screw rod, and the bottom of the first slider is connected to the top limit sliding connection of the bracket through a linear guide assembly; the top of the first slider is fixedly connected to the bottom of the mounting plate; the second motor is fixedly connected to the top of the mounting plate; the upper end of the side wall of the L-shaped support plate is fixedly connected to the side wall of the first slider; one end of the second screw rod is fixedly connected to the output end of the second motor, and the other end of the second screw rod is rotatably connected to the horizontal end of the L-shaped support plate; the side wall of the second slider is limitedly slidably connected to the side wall of the L-shaped support plate through a linear guide assembly; the right side wall of the second slider is fixedly connected to the upper end of the welding gun.

[0022] The utility model has the following technical effects:

[0023] 1. The utility model pushes the first push block through the connecting rod to make the first push block move inward; at this time, the first push block squeezes the second push block to make the limit sliding block slide in the limit groove, so that the second push block pushes the third push block to approach the longitudinal L-shaped plate through the first spring, at this time, the third push block and the longitudinal L-shaped plate form a clamping structure; the first push block pushes the fourth push block through the second spring, so that the fourth push block approaches the transverse L-shaped plate, at this time, the fourth push block and the transverse L-shaped plate form a clamping structure; the third push block approaches the longitudinal L-shaped plate and the fourth push block approaches the transverse L-shaped plate to form an automatic clamping structure, which can realize the clamping of the processed trolley underframe, and the movement of the cylinder can simultaneously control multiple clamping structures, and the clamping stroke of the clamping mechanism can be adjusted by adjusting the longitudinal L-shaped plate to be connected with different longitudinal screw holes and the transverse L-shaped plate to be connected with different transverse screw holes, so that the clamping mechanism can adapt to a variety of workpieces and reduce costs.

[0024] 2. The utility model can not only accurately locate the welding parts, but also meet the welding requirements of multiple welding parts through the control of the first motor and the second motor, thus saving a lot of manpower. By drying the outer shell and the drying rod, the workpiece can be preheated to prevent defects such as cracks and reduce the probability of defective products during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The utility model is a three-dimensional welding machine capable of automatically limiting Figure 1 .

[0027] Figure 2 The utility model is a front view of a welding machine capable of automatically limiting position.

[0028] Figure 3 The utility model is a left view of a welding machine capable of automatically limiting position.

[0029] Figure 4 The utility model is a three-dimensional welding machine capable of automatically limiting Figure 2 .

[0030] Figure 5 The utility model is a three-dimensional welding machine capable of automatically limiting Figure 3 .

[0031] Figure 6 For along Figure 3 AA direction cross-sectional view.

[0032] Figure 7 For along Figure 3 BB direction cross-sectional view.

[0033] Figure 8 for Figure 4 Enlarged view of point C in the middle.

[0034] Fig. 9 for Figure 5 Enlarged view of point D in the middle.

[0035] Fig.10 for Figure 6 Enlarged view of point E in the middle.

[0036] Fig.11 for Figure 7 Enlarged view of point F in the middle.

[0037] The numbers in the figure represent respectively: 1. Frame 2. Clamping assembly 21. Longitudinal clamping assembly 211. Cylinder 212. Connecting rod 213. First push block 214. Second push block 215. Third push block 216. First spring 217. Longitudinal L-shaped plate 218. Longitudinal screw hole 219. Limiting groove 2110. Limiting slider 2111. Base 22. Transverse clamping assembly 221. Second spring 222. Transverse L-shaped plate 223. Transverse screw hole 224. Fourth push block 3. Working assembly 31. Drying assembly 311. Drying shell 312. Drying rod 313. Support plate 32. Welding assembly 321. First motor 322. First slider 323. First screw rod 324. Bracket 325. Mounting plate 326. Second motor 327. Second screw rod 328. Second slider 329. Welding gun 3210. L-shaped support plate 4. Transmission assembly. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] The utility model is further described below in conjunction with embodiments.

[0040] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0041] Example 1: Please refer to the attached manual Figure 1-11 , a welding machine capable of automatic position limiting, comprising a frame 1;

[0042] The upper end of the frame 1 is fixedly connected with a transmission assembly 4 for processing the underframe of the transmission trolley;

[0043] A working assembly 3 for processing the underframe of the trolley is installed on the top right side of the frame 1;

[0044] A clamping assembly 2 for clamping the trolley chassis is installed on the top left side of the transmission assembly 4.

[0045] The clamping assembly 2 includes a longitudinal clamping assembly 21 and a transverse clamping assembly 22 ; the longitudinal clamping assembly 21 is installed on the transmission assembly 4 ; and the transverse clamping assembly 22 is installed on the longitudinal clamping assembly 21 .

[0046] The longitudinal clamping assembly 21 includes a cylinder 211, a connecting rod 212, a first push block 213, a second push block 214, a third push block 215, a first spring 216, a longitudinal L-shaped plate 217, a longitudinal screw hole 218, a limiting groove 219, a limiting slider 2110 and a base 2111; the top of the movable end of the transmission assembly 4 is fixedly connected to the bottom of the base 2111; the left and right side walls of the base 2111 are respectively fixedly connected with the cylinder 211; the output ends of the cylinder 211 are respectively fixedly connected to the connecting rod 212; the top of the connecting rod 212 is respectively fixedly connected to the bottom of the first push block 213; the front and rear side walls of the first push block 213 are respectively in contact with the inclined surface of the second push block 214; the outer end side wall of the second push block 214 Multiple groups of first springs 216 are respectively installed, one end of the first spring 216 is fixedly connected to the outer end side wall of the second push block 214, and the other end of the first spring 216 is respectively fixedly connected to the side wall of the third push block 215; there are four groups of longitudinal L-shaped plates 217 that are symmetrical front and back, and the bottom of the longitudinal L-shaped plates 217 is fixedly connected to the top of the base 2111; the lower ends of the second push block 214 and the third push block 215 are respectively fixedly connected to the limiting slider 2110, and the top of the base 2111 is provided with multiple groups of limiting grooves 219 that are limitedly slidably connected to the limiting slider 2110; the end of the first push block 213 away from the connecting rod 212 is connected to the transverse clamping assembly 22, and the top of the base 2111 is connected to the transverse clamping assembly 22.

[0047] Preferably, a plurality of groups of longitudinal screw holes 218 are provided on the top of the base 2111 , and the bottoms of the longitudinal L-shaped plates 217 are detachably connected to the longitudinal screw holes 218 via bolts.

[0048] The transverse clamping assembly 22 includes a second spring 221, a transverse L-shaped plate 222, a transverse screw hole 223 and a fourth push block 224; one end of the second spring 221 is fixedly connected to one end of the first push block 213 away from the connecting rod 212, and the other end of the second spring 221 is fixedly connected to the side wall of the fourth push block 224; the bottom of the fourth push block 224 is in contact with the top of the base 2111; the transverse L-shaped plate 222 has two groups of left and right symmetrical groups, and the bottom of the transverse L-shaped plate 222 is fixedly connected to the top of the base 2111.

[0049] Preferably, a plurality of groups of transverse screw holes 223 are provided on the top of the base 2111 , and the bottoms of the transverse L-shaped plates 222 are detachably connected to the transverse screw holes 223 via bolts.

[0050] When the device is working, the overall frame of the trolley chassis is placed on the base 2111 of the longitudinal clamping assembly 21 of the clamping assembly 2, the longitudinal square rod is placed against the longitudinal L-shaped plate 217, and the transverse square rod is placed against the transverse L-shaped plate 222 of the transverse clamping assembly 22; the cylinder 211 is started, and the first push block 213 is pushed through the connecting rod 212, so that the first push block 213 moves inward; at this time, the first push block 213 squeezes the second push block 214, so that the limiting slider 2110 slides in the limiting groove 219, so that the second push block 214 pushes the third push block 215 to approach the longitudinal L-shaped plate 217 through the first spring 216, and at this time, the third push block 215 and the longitudinal L-shaped plate 217 form a clamping structure; the first push block 213 is pushed through the first spring 216, so that the third push block 215 and the longitudinal L-shaped plate 217 form a clamping structure; the first push block 213 is pushed through the second push block 214, so that the second push block 214 is pushed through the first spring 216, so that the third push block 215 and the longitudinal L-shaped plate 217 form a clamping structure. The fourth push block 224 is pushed by the second spring 221 so that the fourth push block 224 approaches the transverse L-shaped plate 222. At this time, the fourth push block 224 and the transverse L-shaped plate 222 form a clamping structure; the third push block 215 approaches the longitudinal L-shaped plate 217, and the fourth push block 224 approaches the transverse L-shaped plate 222, so as to form an automatic clamping structure, which can realize the clamping of the processed trolley chassis, and the movement of the cylinder 211 can simultaneously control multiple clamping structures, and the clamping stroke of this clamping mechanism can be adjusted by adjusting the longitudinal L-shaped plate 217 to be connected with different longitudinal screw holes 218 and the transverse L-shaped plate 222 to be connected with different transverse screw holes 223, so that the clamping mechanism can adapt to a variety of workpieces and reduce costs.

[0051] Example 2: Figure 1-11 As shown, as a preferred embodiment of the utility model, the working assembly 3 includes a drying assembly 31 and a welding assembly 32; the drying assembly 31 is installed on the top of the frame 1, and the welding assembly 32 is installed on the drying assembly 31.

[0052] The drying assembly 31 includes a drying shell 311, a drying rod 312 and a support plate 313; the support plate 313 is fixedly connected to the top of the frame 1; the front and rear side walls of the drying shell 311 and the front and rear inner walls of the support plate 313 are fixedly connected; the upper end of the support plate 313 is fixedly connected to the welding assembly 31; and multiple groups of drying rods 312 are fixedly connected to the inside of the drying shell 311.

[0053] The welding assembly 32 includes a first motor 321, a first slider 322, a first screw rod 323, a bracket 324, a mounting plate 325, a second motor 326, a second screw rod 327, a second slider 328 and a welding gun 329; the first motor 321 is fixedly connected to the upper end of the side wall of the support plate 313; one end of the first screw rod 323 is fixedly connected to the output end of the first motor 321, and the other end of the first screw rod 323 is rotatably connected to the upper end of the side wall of the support plate 313; the front and rear side walls of the bracket 324 are respectively fixedly connected to the front and rear inner walls of the support plate 313; the lower end of the first slider 322 is threadedly connected to the side wall of the first screw rod 323, and the bottom of the first slider 322 is threadedly connected to the side wall of the first screw rod 323. The top of the first slider 322 is connected to the bottom of the mounting plate 325 by a linear guide assembly; the top of the first slider 322 is fixedly connected to the bottom of the mounting plate 325; the second motor 326 is fixedly connected to the top of the mounting plate 325; the upper end of the side wall of the L-shaped support plate 3210 is fixedly connected to the side wall of the first slider 322; one end of the second screw rod 327 is fixedly connected to the output end of the second motor 326, and the other end of the second screw rod 327 is rotatably connected to the horizontal end of the L-shaped support plate 3210; the side wall of the second slider 328 is connected to the side wall of the L-shaped support plate 3210 by a linear guide assembly; the right side wall of the second slider 328 is fixedly connected to the upper end of the welding gun 329.

[0054] When the device is working, the trolley chassis enters under the drying shell 311 of the drying assembly 31 of the working assembly 3, and after being preheated by the drying rod 312, it continues to move to the right; the first motor 321 of the welding assembly 32 is started, and the output end of the first motor 321 drives the first screw rod 323 to rotate, and the first screw rod 323 drives the first slider 322 to move forward and backward, and the welding gun 329 is positioned forward and backward, and then the welding part is positioned left and right through the transmission assembly 4, so that the welding gun 329 is located above the part that needs to be welded; the second motor 326 is started, and the output end of the second motor 326 drives the second screw rod 327 to rotate, and the second screw rod 327 drives the second slider 328 to move up and down, and the second slider 328 drives the welding gun 329 to move up and down, and the welding part is started. After the welding is completed, the output end of the second motor 326 rotates in the opposite direction, the second screw rod 327 drives the second slider 328 to move up, the second slider 328 drives the welding gun 329 to move up, and the welding gun 329 is reset; then the next welding part is positioned, and after the positioning is completed, the second motor 326 is started again to repeat the above process, and after the welding of each part is completed, the device is reset; through the control of the first motor 321 and the second motor 326, not only the precise positioning of the welding part can be completed, but also the welding requirements of multiple welding parts can be completed, saving a lot of labor; through the drying shell 311 and the drying rod 312, the workpiece can be preheated to prevent defects such as cracks and reduce the probability of defective products during the welding process.

[0055] Example 3: Figure 1-11 As shown, as a preferred embodiment of the present invention, the drying rods 312 are evenly distributed along the front-to-back direction, which can make the workpiece to be processed preheated more fully.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A welding machine capable of automatically limiting position, comprising a frame (1), characterized in that: The upper end of the frame (1) is fixedly connected with a transmission component (4) for processing the transmission trolley chassis; A working assembly (3) for processing the trolley chassis is installed on the top right side of the frame (1); A clamping assembly (2) for clamping the trolley chassis is installed on the left side of the top of the transmission assembly (4); The clamping assembly (2) comprises a longitudinal clamping assembly (21) and a transverse clamping assembly (22); the longitudinal clamping assembly (21) is mounted on the transmission assembly (4); and the transverse clamping assembly (22) is mounted on the longitudinal clamping assembly (21).

2. The automatic position-limiting welding machine according to claim 1, characterized in that: The transmission component (4) is a conveyor belt.

3. The welding machine capable of automatic position limiting according to claim 1, characterized in that: The longitudinal clamping assembly (21) comprises a cylinder (211), a connecting rod (212), a first push block (213), a second push block (214), a third push block (215), a first spring (216), a longitudinal L-shaped plate (217), a longitudinal screw hole (218), a limiting groove (219), a limiting slider (2110) and a base (2111); the top of the movable end of the transmission assembly (4) and the bottom of the base (2111) are fixedly connected; the left and right side walls of the base (2111) are respectively fixedly connected to the cylinder (211); the output ends of the cylinder (211) are respectively fixedly connected to the connecting rod (212); the top of the connecting rod (212) is respectively fixedly connected to the bottom of the first push block (213); the front and rear side walls of the first push block (213) are respectively contacted and connected to the inclined surface of the second push block (214); the outer A plurality of first springs (216) are respectively installed on the end side walls, one end of the first spring (216) is fixedly connected to the outer end side wall of the second push block (214), and the other end of the first spring (216) is respectively fixedly connected to the side wall of the third push block (215); there are four groups of longitudinal L-shaped plates (217) symmetrically arranged front and rear, and the bottom of the longitudinal L-shaped plates (217) is fixedly connected to the top of the base (2111); the lower ends of the second push block (214) and the third push block (215) are respectively fixedly connected to the limit slider (2110), and the top of the base (2111) is provided with a plurality of limit grooves (219) connected to the limit slider (2110) in a limit sliding manner; one end of the first push block (213) away from the connecting rod (212) is connected to the transverse clamping assembly (22), and the top of the base (2111) is connected to the transverse clamping assembly (22).

4. The welding machine capable of automatic position limiting according to claim 3, characterized in that: The top of the base (2111) is provided with a plurality of groups of longitudinal screw holes (218), and the bottoms of the longitudinal L-shaped plates (217) are detachably connected to the longitudinal screw holes (218) via bolts.

5. The welding machine capable of automatic position limiting according to claim 4 or 3, characterized in that: The transverse clamping assembly (22) comprises a second spring (221), a transverse L-shaped plate (222), a transverse screw hole (223) and a fourth push block (224); one end of the second spring (221) is fixedly connected to one end of the first push block (213) away from the connecting rod (212), and the other end of the second spring (221) is fixedly connected to the side wall of the fourth push block (224); the bottom of the fourth push block (224) is in contact with the top of the base (2111); the transverse L-shaped plate (222) has two groups of left-right symmetry, and the bottom of the transverse L-shaped plate (222) is fixedly connected to the top of the base (2111).

6. The welding machine capable of automatic position limiting according to claim 5, characterized in that: A plurality of groups of transverse screw holes (223) are provided on the top of the base (2111), and the bottoms of the transverse L-shaped plates (222) are detachably connected to the transverse screw holes (223) via bolts.

7. The welding machine capable of automatic position limiting according to claim 6, characterized in that: The working assembly (3) comprises a drying assembly (31) and a welding assembly (32); the drying assembly (31) is mounted on the top of the frame (1), and the welding assembly (32) is mounted on the drying assembly (31).

8. The welding machine capable of automatic position limiting according to claim 7, characterized in that: The drying assembly (31) comprises a drying shell (311), a drying rod (312) and a support plate (313); the support plate (313) is fixedly connected to the top of the frame (1); the front and rear side walls of the drying shell (311) and the front and rear inner walls of the support plate (313) are fixedly connected; the upper end of the support plate (313) is fixedly connected to the welding assembly (32); and a plurality of groups of drying rods (312) are fixedly connected to the interior of the drying shell (311).

9. The welding machine capable of automatic position limiting according to claim 8, characterized in that: The drying rods (312) are evenly distributed along the front-to-back direction.

10. The welding machine capable of automatic position limiting according to claim 9, characterized in that: The welding assembly (32) comprises a first motor (321), a first slider (322), a first screw rod (323), a bracket (324), a mounting plate (325), a second motor (326), a second screw rod (327), a second slider (328) and a welding gun (329); the first motor (321) is fixedly connected to the upper end of the side wall of the support plate (313); one end of the first screw rod (323) is fixedly connected to the output end of the first motor (321), and the other end of the first screw rod (323) is rotatably connected to the upper end of the side wall of the support plate (313); the front and rear side walls of the bracket (324) are respectively fixedly connected to the front and rear inner walls of the support plate (313); the lower end of the first slider (322) is threadedly connected to the side wall of the first screw rod (323), and the first slider (32 The bottom of the first slider (322) is connected to the top of the bracket (324) in a limited sliding manner through a linear guide assembly; the top of the first slider (322) is fixedly connected to the bottom of the mounting plate (325); the second motor (326) is fixedly connected to the top of the mounting plate (325); the upper end of the side wall of the L-shaped support plate (3210) is fixedly connected to the side wall of the first slider (322); one end of the second screw rod (327) is fixedly connected to the output end of the second motor (326), and the other end of the second screw rod (327) is rotatably connected to the horizontal end of the L-shaped support plate (3210); the side wall of the second slider (328) is connected to the side wall of the L-shaped support plate (3210) in a limited sliding manner through a linear guide assembly; the right side wall of the second slider (328) is fixedly connected to the upper end of the welding gun (329).

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