Projection welding work station capable of automatically achieving projection welding hole positioning

Abstract

The invention discloses a projection welding work station capable of automatically achieving projection welding hole positioning, and belongs to the technical field of projection welding. A swing mechanism comprises a vertical plate arranged on the side face of a conveying roller, a sliding cavity is formed in a swing seat, a through fixing column is fixedly arranged at the bottom of a sliding arm, and a mounting plate is fixedly arranged at the tail end of the fixing column; a rotating gear ring is fixedly connected to the top of the rotating cylinder, two sets of matched racks are slidably arranged on the bottom plate, and clamping plates are fixedly connected to the tail ends of the racks; an inclined slide is arranged on the fixing frame, and symmetrical flashboards are arranged at an outlet of the slide in a sliding mode. The welding mechanism comprises a transverse table arranged on the side face of the conveying roller, a second moving frame is movably arranged at the bottom of the first moving frame, an air cylinder is arranged at the bottom of the second moving frame, and a welding gun is installed at the bottom of the air cylinder. According to the projection welding workstation, the bolts and the mounting holes can be accurately positioned through the visual sensor, the position of the second moving frame is rapidly adjusted through the first moving motor and the second moving motor, and the working efficiency of the projection welding workstation is improved through the design.

Description

Technical Field

[0001] The invention relates to the technical field of projection welding, in particular to a projection welding workstation capable of automatically realizing the positioning of projection welding holes. Background Art

[0002] Projection welding is a high-efficiency welding method that can perform multiple-point welding at the same time. It can be used to replace arc welding, brazing and bite welding. This method has a fast processing speed and no other consumption except electricity, which is a great feature. Compared with spot welding, the difference between projection welding and spot welding is that projections are pre-processed on the plate, or the profiles and chamfers on the weldment that can concentrate the current are used as the mutual contact parts during welding. During welding, the contact is based on the projection points, which increases the pressure and current density per unit area, is conducive to breaking the oxide film on the surface of the plate, concentrating the heat, reducing the shunt, and reducing the center distance of the spot welding. Multiple projection welding can be performed at one time, which improves productivity and reduces the warping deformation of the joint. On the car body, projection welding nuts (nuts with projections) are generally welded on thin plates, so that only the bolts need to be tightened during assembly, which improves assembly efficiency.

[0003] The patent application with publication number CN111203623A discloses an automatic nut projection welding machine for a rear axle of a vehicle, which includes a base, a conveying track, a placing assembly and a welding assembly. The base includes a bottom plate, a first support wall and a second support wall. The first support wall and the second support wall are respectively arranged on opposite sides of the bottom plate. The conveying track includes a horizontal conveying section and an inclined conveying section. The inclined conveying section is installed on the first support wall and connected to the end of the horizontal conveying section. The inclined conveying section extends obliquely downward to between the first support wall and the second support wall. The placing assembly includes a fixing frame, a lifting cylinder, a lifting frame, a first driving member, a V-shaped positioning member, a second driving member and a thrust rod. The welding efficiency of the automatic nut projection welding machine for the rear axle of the vehicle is relatively high.

[0004] However, the above disclosed nut projection welding machine has a general degree of automation, low processing efficiency, time-consuming and labor-intensive, cannot automatically load and unload parts to be welded, and has general processing accuracy. It lacks a high-freedom welding gun with a visual recognition structure. Summary of the invention

[0005] The purpose of the present invention is to provide a projection welding workstation that can automatically realize the positioning of projection welding holes in order to solve the problems that the existing nut projection welding machines have a general degree of automation, low processing efficiency, time-consuming and labor-intensive, cannot automatically load and unload parts to be welded, have general processing accuracy, and lack a high-freedom welding gun with a visual recognition structure.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a projection welding workstation capable of automatically positioning projection welding holes, comprising a conveying roller, a swinging mechanism, a mounting mechanism and a welding mechanism, wherein the conveying roller comprises two sets of sub-conveying structures that cooperate with each other, and a processing groove is formed between the sub-conveying structures; the swinging mechanism comprises a vertical plate fixedly arranged on the side of the conveying roller, a swinging seat is movably arranged on the inner side of the vertical plate, a sliding cavity is provided inside the swinging seat, a sliding arm is slidably arranged in the sliding cavity, a penetrating fixed column is fixedly arranged at the bottom of the sliding arm, and a mounting plate is fixedly arranged at the end of the fixed column; a rotating drum is movably installed in the middle of the mounting plate, and the top of the rotating drum is fixed It is connected to a rotating gear ring, and a bottom plate is provided at the bottom of the rotating drum, and two groups of mutually matching racks are slidably provided on the bottom plate, and a clamping plate is fixedly connected to the end of the rack; the mounting mechanism includes a fixed frame arranged on the side of the conveying roller, and an inclined slide is arranged on the fixed frame, and symmetrical gate plates are slidably provided at the outlet of the slide, and the gate plates will be triggered when the swing mechanism moves from a horizontal direction to a vertical direction; the welding mechanism includes a horizontal platform arranged on the side of the conveying roller, and a moving frame 1 is movably provided on the horizontal platform, and a moving frame 2 is movably provided at the bottom of the moving frame 1, a cylinder is provided at the bottom of the moving frame 2, and a welding gun is installed at the bottom of the cylinder.

[0007] As a further solution of the present invention: a swing motor is also installed on the vertical plate, the output end of the swing motor is connected to the active arm, the end of the active arm is connected to the driven arm, and a swing plate is also movably arranged on the vertical plate, the swing plate is located between the swing seat and the swing motor, the other end of the driven arm is movably connected to the middle part of the swing plate; the other end of the fixed column is movably connected to the top of the swing plate.

[0008] As a further solution of the present invention: a clamping motor is installed on the top of the base plate, and the output end of the clamping motor is connected to a driving gear meshing with the racks on both sides.

[0009] As a further solution of the present invention: a rotating motor is also installed at the bottom of the mounting plate, and an output end of the rotating motor is connected to a rotating gear meshing with the rotating gear ring.

[0010] As a further solution of the present invention: a plurality of groups of parts to be welded are further arranged on the conveying roller, and the parts to be welded include a raised portion, and symmetrical wing plates are arranged on both sides of the raised portion, and mounting holes are opened on the wing plates.

[0011] As a further solution of the present invention: a symmetrical and penetrating slide groove is provided on the fixed frame, and the slide groove is located at the exit of the slide; the gate plate is slidably arranged in the slide groove, and an extrusion part is provided at the bottom of the gate plate, and the extrusion part is located below the fixed frame; an extrusion plate is also slidably arranged at the bottom of the fixed frame, and oblique edges cooperating with the extrusion part are provided on both sides of the extrusion plate.

[0012] As a further solution of the present invention: multiple groups of return springs 1 are connected to the side of the gate plate, and the gate plate is connected to the inner wall of the slide groove through the return spring 1; the inner side of the extrusion plate is connected to the return spring 2, and the extrusion plate is connected to the fixed frame through the return spring 2.

[0013] As a further solution of the present invention: two groups of symmetrical threaded seats are arranged on the horizontal platform, and multiple groups of screw rods are movably arranged between the threaded seats, and a motion motor connected to the screw rods is installed on the side of one group of the threaded seats, and the motion frame is threadedly connected to the multiple groups of screw rods.

[0014] As a further solution of the present invention: two groups of symmetrical threaded seats 2 are arranged at the bottom of the moving frame 1, and multiple groups of screw rods 2 are movably arranged between the threaded seats 2. A moving motor 2 connected to the screw rods 2 is installed on the side of one group of the threaded seats 2, and the moving frame 2 is threadedly connected to the multiple groups of screw rods 2.

[0015] As a further solution of the present invention: a plurality of groups of visual sensors are arranged at the bottom of the second motion frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can convey the workpiece to be processed to the bottom of the installation mechanism through the conveying roller. Under the cooperation of the swing plate and the driven arm, the sliding arm will slide along the swing seat while deflecting. When the rack is in a horizontal position, the clamping plate just clamps the protrusion. When the rack swings to a vertical position, the wing plate will squeeze the extrusion plate inward. At this time, under the cooperation of the bevel and the extrusion part, the gate slides outward, and the bolts in the slide are separated from the gates on both sides and fall into the mounting holes on the wing plate. Then the clamping plate drives the workpiece to be welded to swing downward again and separate from the extrusion plate, and then drives the workpiece to be welded to rotate 180 degrees by rotating the gear ring and the rotating gear, and then the clamping plate drives the workpiece to be welded to swing upward again and squeeze the extrusion plate again, and the bolts fall into the mounting holes on the other side. This design is ingenious and effective, which improves the automation level and feeding efficiency of the projection welding workstation that automatically realizes the positioning of the projection welding hole.

[0018] 2. The present invention can quickly and accurately locate the positions of bolts and mounting holes through visual sensors, and quickly adjust the position of motion frame 2 through motion motor 1 and motion motor 2. This design improves the work efficiency of the projection welding workstation that automatically realizes projection welding hole positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 The three-dimensional structure of the present invention Figure 1 ;

[0021] Figure 2 The three-dimensional structure of the present invention Figure 2 ;

[0022] Figure 3 It is a partial three-dimensional structural diagram of the swing mechanism in the present invention;

[0023] Figure 4 The three-dimensional structure of the clamping plate in the present invention Figure 1 ;

[0024] Figure 5 The three-dimensional structure of the clamping plate in the present invention Figure 2 ;

[0025] Figure 6 It is a partial three-dimensional structural diagram of the installation mechanism in the present invention;

[0026] Figure 7 It is a three-dimensional structural diagram of the gate plate and the extrusion plate in the present invention;

[0027] Figure 8 It is a partial three-dimensional structural diagram of the welding mechanism in the present invention.

[0028] Description of reference numerals:

[0029] 1. conveying roller; 101. sub-conveying structure; 102. processing groove; 103. workpiece to be welded; 104. raised part; 105. wing plate; 106. mounting hole;

[0030] 2. Swing mechanism; 201. Vertical plate; 202. Swing motor; 203. Active arm; 204. Driven arm; 205. Swing plate; 206. Swing seat; 207. Sliding cavity; 208. Sliding arm; 209. Fixed column; 210. Mounting plate; 211. Rotating drum; 212. Rotating gear ring; 213. Bottom plate; 214. Rack; 215. Clamping plate; 216. Clamping motor; 217. Active gear; 218. Rotating motor; 219. Rotating gear;

[0031] 3. Mounting mechanism; 301. Fixing frame; 302. Slide; 303. Slideway; 304. Gate; 305. Return spring 1; 306. Extrusion part; 307. Extrusion plate; 308. Bevel; 309. Return spring 2;

[0032] 4. Welding mechanism; 401. Horizontal table; 402. Threaded seat 1; 403. Screw 1; 404. Motion motor 1; 405. Motion frame 1; 406. Threaded seat 2; 407. Screw 2; 408. Motion motor 2; 409. Motion frame 2; 410. Visual sensor; 411. Cylinder; 412. Welding gun. DETAILED DESCRIPTION

[0033] The following will be combined with the attached Figures 1 to 8 The technical solution of the present invention is described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention provides a projection welding workstation capable of automatically positioning projection welding holes through improvements, such as Figure 1-Figure 8 As shown, it includes a conveying roller 1, a swing mechanism 2, a mounting mechanism 3 and a welding mechanism 4. The conveying roller 1 includes two groups of sub-conveying structures 101 that cooperate with each other, and a processing groove 102 is formed between the sub-conveying structures 101; the swing mechanism 2 includes a vertical plate 201 fixedly arranged on the side of the conveying roller 1, and a swing seat 206 is movably arranged on the inner side of the vertical plate 201. A sliding cavity 207 is opened inside the swing seat 206, and a sliding arm 208 is slidably arranged in the sliding cavity 207. A penetrating fixed column 209 is fixedly arranged at the bottom of the sliding arm 208, and a mounting plate 210 is fixedly arranged at the end of the fixed column 209; a rotating drum 211 is movably installed in the middle of the mounting plate 210, and a rotating gear ring 212 is fixedly connected to the top of the rotating drum 211, and a rotating gear ring 212 is fixedly connected to the bottom of the rotating drum 211. A bottom plate 213 is provided, on which two sets of mutually cooperating racks 214 are slidably provided, and the ends of the racks 214 are fixedly connected with a clamping plate 215; the mounting mechanism 3 includes a fixed frame 301 arranged on the side of the conveying roller 1, on which an inclined slide 302 is arranged, and at the exit of the slide 302, a symmetrical gate plate 304 is slidably provided, and when the swing mechanism 2 moves from the horizontal direction to the vertical direction, the gate plate 304 will be triggered; the welding mechanism 4 includes a horizontal platform 401 arranged on the side of the conveying roller 1, on which a moving frame 1 405 is movably provided, and a moving frame 2 409 is movably provided at the bottom of the moving frame 1 405, and a cylinder 411 is arranged at the bottom of the moving frame 2 409, and a welding gun 412 is installed at the bottom of the cylinder 411.

[0035] In this embodiment: the projection welding workstation capable of automatically positioning the projection welding hole is mainly divided into four parts: a conveying roller 1, a swing mechanism 2, a mounting mechanism 3 and a welding mechanism 4. When the device is in use, firstly, multiple groups of workpieces to be welded 103 are placed at intervals on the conveying roller 1 and the conveying roller 1 is driven to rotate. When the workpieces to be welded 103 move to the bottom of the swing mechanism 2, the clamping motor 216 is started, and the racks 214 and the clamping plates 215 on both sides move inward and grab the workpieces to be welded 103. Then the swing motor 202 is started, and when the swing motor 202 drives the active arm 203 to rotate, the fixed column 209 and the mounting plate 210 drive the workpieces to be welded 103 and the clamping plates 215 to swing from the horizontal state to the upper right and move to a vertical state. When the racks 214 and the clamping plates 215 swing to a vertical position, the wing plates 105 at the top will squeeze the extrusion plates 307 inward. At this time, under the cooperation of the bevel 308 and the extrusion part 306, the gate plate 304 slides outward along the slide groove 303, and the bolts in the slide 302 are separated from the gate plates 304 on both sides, and fall into the mounting holes 106 on the wing plate 105 under the action of gravity. Then the clamping plate 215 drives the welded part 103 to swing to the lower right again and separate from the extrusion plate 307. Under the action of the second reset spring 309, the extrusion plate 307 slides outward and separates from the gate plates 304 on both sides. At this time, under the action of the first reset spring 305, the gate plates 304 on both sides slide toward the middle and block the slide 302. At this time, the gate plates 304 just limit the heads of the upper and lower bolts of the slide 302. When it has not completely swung to the horizontal position, the workpiece 103 to be welded is driven to rotate 180 degrees by rotating the ring gear 212 and the rotating gear 219, and then the clamping plate 215 drives the workpiece 103 to be welded to swing upward again and squeeze the extrusion plate 307 again, and the bolts fall into the mounting holes 106 on the other side. After the mounting holes 106 on the wing plates 105 on both sides are installed with bolts, the workpiece 103 to be welded is moved to the bottom of the swing mechanism 2 again and the clamping motor 216 is started. At this time, the racks 214 and the clamping plates 215 on both sides move outward and put down the workpiece 103. The two sides of the workpiece 103 to be welded are on the sub-conveying structure 101, and the bolts on the left and right sides are in the processing groove 102. After the workpiece 103 to be welded moves to the bottom of the welding mechanism 4, the position of the bolts and the mounting holes 106 is quickly and accurately located by the visual sensor 410.

[0036] See attached Figure 1 -Attached Figure 2A swing motor 202 is also installed on the vertical plate 201, and the output end of the swing motor 202 is connected to the active arm 203, and the end of the active arm 203 is connected to the driven arm 204. A swing plate 205 is also movably arranged on the vertical plate 201, and the swing plate 205 is located between the swing seat 206 and the swing motor 202. The other end of the driven arm 204 is movably connected to the middle part of the swing plate 205; the other end of the fixed column 209 is movably connected to the top of the swing plate 205.

[0037] In this embodiment: when the driven arm 204 drives the swing plate 205 to move, the sliding arm 208 can swing back and forth relative to the swing seat 206, and the swing amplitude of the sliding arm 208 is 90 degrees, thereby driving the fixed column 209 and the mounting plate 210 to reciprocate between the vertical and horizontal states.

[0038] See attached Figure 4 -Attached Figure 5 A clamping motor 216 is installed on the top of the bottom plate 213 , and an output end of the clamping motor 216 is connected to a driving gear 217 meshing with the racks 214 on both sides.

[0039] In this embodiment, a clamping motor 216 is designed to drive the racks 214 on both sides to move synchronously outward or inward, thereby realizing the grabbing and putting down of the workpiece 103 to be welded.

[0040] See attached Figure 4 -Attached Figure 5 A rotating motor 218 is also installed at the bottom of the mounting plate 210 , and an output end of the rotating motor 218 is connected to a rotating gear 219 meshing with the rotating gear ring 212 .

[0041] In this embodiment: after the clamping plate 215 clamps the workpiece 103 to be welded on the conveying roller 1, the workpiece 103 to be welded and the clamping plate 215 will rotate 180 degrees under the drive of the rotating motor 218, so that the bolts to be welded can be installed in the mounting holes 106 on the two side wing plates 105 through the mounting mechanism 3.

[0042] See attached Figure 1 -Attached Figure 2 The conveying roller 1 is also provided with a plurality of groups of parts to be welded 103 , and the parts to be welded 103 include a protruding portion 104 , and symmetrical wing plates 105 are provided on both sides of the protruding portion 104 , and mounting holes 106 are opened on the wing plates 105 .

[0043] In this embodiment: the clamping plate 215 clamps the protrusion 104, and the mounting hole 106 is used to install the bolt and perform subsequent welding operations.

[0044] See attached Figure 6 -Attached Figure 7A symmetrical and penetrating slide groove 303 is provided on the fixed frame 301, and the slide groove 303 is located at the exit of the slide 302; the gate plate 304 is slidably arranged in the slide groove 303, and an extrusion portion 306 is arranged at the bottom of the gate plate 304, and the extrusion portion 306 is located below the fixed frame 301. An extrusion plate 307 is also slidably arranged at the bottom of the fixed frame 301, and oblique edges 308 cooperating with the extrusion portion 306 are arranged on both sides of the extrusion plate 307.

[0045] In this embodiment, when the welded part 103 swings from the horizontal direction to the vertical position, the wing plate 105 squeezes the squeeze plate 307. At this time, the squeeze plate 307 slides inward along the fixing frame 301, and under the cooperation of the squeeze portion 306 and the bevel 308, the gate plates 304 on both sides slide outward and separate from the head of the bolt. At this time, the bolt slides along the slide 302 under the action of gravity and falls into the mounting hole 106.

[0046] See attached Figure 6 -Attached Figure 7 The side of the gate plate 304 is connected to multiple groups of return springs 305, and the gate plate 304 is connected to the inner wall of the slide groove 303 through the return spring 305; the inner side of the extrusion plate 307 is connected to the return spring 309, and the extrusion plate 307 is connected to the fixed frame 301 through the return spring 309.

[0047] In this embodiment, when the wing plate 105 is separated from the extrusion plate 307, the extrusion plate 307 slides outward and separates from the gate plates 304 on both sides under the action of the return spring 2 309. At this time, under the action of the return spring 1 305, the gate plates 304 on both sides slide toward the middle and block the slide 302, and the gate plates 304 just limit the head of the bolt.

[0048] See attached Figure 1 -Attached Figure 2 and attached Figure 8 Two groups of symmetrical threaded seats 402 are arranged on the horizontal platform 401, and multiple groups of screw rods 403 are movably arranged between the threaded seats 402. A motion motor 404 connected to the screw rods 403 is installed on the side of one group of threaded seats 402, and a motion frame 405 is threadedly connected to the multiple groups of screw rods 403.

[0049] In this embodiment, the position of the moving frame 405 in the front-to-back direction can be adjusted by the screw rod 403 and the moving motor 404, so as to further adjust the position of the welding gun 412.

[0050] See attached Figure 1 -Attached Figure 2 and attached Figure 8Two groups of symmetrical threaded seats 406 are arranged at the bottom of the moving frame 405, and multiple groups of screw rods 407 are movably arranged between the threaded seats 406. A moving motor 408 connected to the screw rods 407 is installed on the side of one group of threaded seats 406, and the moving frame 409 is threadedly connected to the multiple groups of screw rods 407.

[0051] In this embodiment, the position of the second moving frame 409 in the left-right direction can be adjusted by the second screw rod 407 and the second moving motor 408, so as to further weld the bolts and the mounting holes 106 on the two side wing plates 105.

[0052] See attached Figure 8 A plurality of visual sensors 410 are disposed at the bottom of the motion frame 409 .

[0053] In this embodiment, in order to quickly and accurately locate the positions of the bolts and the mounting holes 106, thereby further improving the welding efficiency, a visual sensor 410 structure is designed.

[0054] In this embodiment: when the device is in use, firstly, multiple groups of workpieces 103 to be welded are placed at intervals on the conveying roller 1 and the conveying roller 1 is driven to rotate. When the workpieces 103 to be welded move to the bottom of the swing mechanism 2, the clamping motor 216 is started, and the racks 214 and the clamping plates 215 on both sides move inward and grab the workpieces 103 to be welded. Then the swing motor 202 is started, and when the swing motor 202 drives the active arm 203 to rotate, the fixed column 209 and the mounting plate 210 drive the workpieces 103 to be welded and the clamping plate 215 to swing from the horizontal state to the upper right and move to the vertical state. When the rack 214 and the clamping plate 215 swing to the vertical position, the wing plate 105 on the top will squeeze the extrusion plate 307 inward. At this time, under the cooperation of the bevel 308 and the extrusion part 306, the gate plate 304 slides outward along the slide groove 303, and the bolts in the slide 302 are separated from the gate plates 304 on both sides, and fall into the mounting holes 106 on the wing plate 105 under the action of gravity. Then the clamping plate 215 drives the welded part 103 to swing to the lower right again and separate from the extrusion plate 307. Under the action of the second reset spring 309, the extrusion plate 307 slides outward and separates from the gate plates 304 on both sides. At this time, under the action of the first reset spring 305, the gate plates 304 on both sides slide toward the middle and block the slide 302. At this time, the gate plates 304 just limit the heads of the upper and lower bolts of the slide 302. When it has not completely swung to the horizontal position, the workpiece 103 to be welded is driven to rotate 180 degrees by rotating the ring gear 212 and the rotating gear 219, and then the clamping plate 215 drives the workpiece 103 to be welded to swing upward again and squeeze the extrusion plate 307 again, and the bolts fall into the mounting holes 106 on the other side. After the mounting holes 106 on the wing plates 105 on both sides are installed with bolts, the workpiece 103 to be welded is moved to the bottom of the swing mechanism 2 again and the clamping motor 216 is started. At this time, the racks 214 and the clamping plates 215 on both sides move outward and put down the workpiece 103. The two sides of the workpiece 103 to be welded are on the sub-conveying structure 101, and the bolts on the left and right sides are in the processing groove 102. After the workpiece 103 to be welded moves to the bottom of the welding mechanism 4, the position of the bolts and the mounting holes 106 is quickly and accurately located by the visual sensor 410.

[0055] The position of the moving frame 1 405 in the front-to-back direction can be adjusted by screw rod 1 403 and moving motor 1 404, and the position of the moving frame 2 409 in the left-to-right direction can be adjusted by screw rod 2 407 and moving motor 2 408, so as to further weld the bolts and mounting holes 106 on the two side wing panels 105.

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and inventive features disclosed herein.

Claims

1. A projection welding workstation capable of automatically realizing projection welding hole positioning, comprising a conveying roller (1), a swing mechanism (2), a mounting mechanism (3) and a welding mechanism (4), characterized in that: The conveying roller (1) comprises two groups of mutually cooperating sub-conveying structures (101), and a processing groove (102) is formed between the sub-conveying structures (101); The swing mechanism (2) comprises a vertical plate (201) fixedly arranged on the side of the conveying roller (1); a swing seat (206) is movably arranged on the inner side of the vertical plate (201); a sliding cavity (207) is provided inside the swing seat (206); a sliding arm (208) is slidably arranged in the sliding cavity (207); a penetrating fixed column (209) is fixedly arranged at the bottom of the sliding arm (208); a mounting plate (210) is fixedly arranged at the end of the fixed column (209); a rotating drum (211) is movably mounted in the middle of the mounting plate (210); a rotating gear ring (212) is fixedly connected to the top of the rotating drum (211); a bottom plate (213) is arranged at the bottom of the rotating drum (211); two groups of mutually cooperating racks (214) are slidably arranged on the bottom plate (213); a clamping plate (215) is fixedly connected to the end of the rack (214); The mounting mechanism (3) comprises a fixing frame (301) arranged on the side of the conveying roller (1), an inclined slide (302) being arranged on the fixing frame (301), a symmetrical gate plate (304) being slidably arranged at the exit of the slide (302), and the gate plate (304) will be triggered when the swing mechanism (2) moves from a horizontal direction to a vertical direction; The welding mechanism (4) comprises a horizontal platform (401) arranged on the side of the conveying roller (1), a moving frame 1 (405) is movably arranged on the horizontal platform (401), a moving frame 2 (409) is movably arranged at the bottom of the moving frame 1 (405), a cylinder (411) is arranged at the bottom of the moving frame 2 (409), and a welding gun (412) is installed at the bottom of the cylinder (411).

2. A projection welding workstation capable of automatically positioning projection welding holes according to claim 1, characterized in that: The vertical plate (201) is also provided with a swing motor (202), the output end of the swing motor (202) is connected to a driving arm (203), the end of the driving arm (203) is connected to a driven arm (204), and a swing plate (205) is also movably provided on the vertical plate (201), the swing plate (205) is located between the swing seat (206) and the swing motor (202), and the other end of the driven arm (204) is movably connected to the middle of the swing plate (205); the other end of the fixed column (209) is movably connected to the top of the swing plate (205).

3. A projection welding workstation capable of automatically positioning projection welding holes according to claim 1, characterized in that: A clamping motor (216) is installed on the top of the bottom plate (213), and an output end of the clamping motor (216) is connected to a driving gear (217) meshing with the racks (214) on both sides.

4. A projection welding workstation capable of automatically realizing projection welding hole positioning according to claim 1, characterized in that: A rotating motor (218) is also installed at the bottom of the mounting plate (210), and an output end of the rotating motor (218) is connected to a rotating gear (219) meshing with the rotating gear ring (212).

5. A projection welding workstation capable of automatically positioning projection welding holes according to any one of claims 1 to 4, characterized in that: The conveying roller (1) is also provided with a plurality of groups of parts to be welded (103), the parts to be welded (103) comprising a protruding portion (104), symmetrical wing plates (105) are provided on both sides of the protruding portion (104), and mounting holes (106) are provided on the wing plates (105).

6. A projection welding workstation capable of automatically positioning projection welding holes according to any one of claims 1 to 4, characterized in that: The fixed frame (301) is provided with a symmetrical and penetrating slide groove (303), and the slide groove (303) is located at the exit of the slide (302); the gate plate (304) is slidably arranged in the slide groove (303), and the bottom of the gate plate (304) is provided with an extrusion portion (306), and the extrusion portion (306) is located below the fixed frame (301); the bottom of the fixed frame (301) is also slidably provided with an extrusion plate (307), and both sides of the extrusion plate (307) are provided with oblique edges (308) that cooperate with the extrusion portion (306).

7. A projection welding workstation capable of automatically positioning projection welding holes according to claim 6, characterized in that: The side of the gate plate (304) is connected to multiple groups of return springs (305), and the gate plate (304) is connected to the inner wall of the slide groove (303) through the return springs (305); the inner side of the extrusion plate (307) is connected to the return spring (309), and the extrusion plate (307) is connected to the fixed frame (301) through the return springs (309).

8. A projection welding workstation capable of automatically positioning projection welding holes according to any one of claims 1 to 4, characterized in that: Two groups of symmetrical threaded seats (402) are arranged on the horizontal platform (401), and multiple groups of screw rods (403) are movably arranged between the threaded seats (402). A motion motor (404) connected to the screw rods (403) is installed on the side of one group of the threaded seats (402), and the motion frame (405) is threadedly connected to the multiple groups of screw rods (403).

9. A projection welding workstation capable of automatically positioning projection welding holes according to any one of claims 1 to 4, characterized in that: Two groups of symmetrical threaded seats (406) are arranged at the bottom of the moving frame (405), and multiple groups of screw rods (407) are movably arranged between the threaded seats (406). A moving motor (408) connected to the screw rods (407) is installed on the side of one group of the threaded seats (406), and the moving frame (409) is threadedly connected to the multiple groups of screw rods (407).

10. A projection welding workstation capable of automatically positioning projection welding holes according to any one of claims 1 to 4, characterized in that: A plurality of groups of visual sensors (410) are arranged at the bottom of the second motion frame (409).

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