A composite board welding device

Abstract

The application discloses a kind of composite board welding device, it is related to welding technical field, the welding device includes portal, and portal side is provided with conveying positioning unit, and welding module is provided on portal, and the execution end of welding module is provided with welding slag cleaning assembly;Welding slag cleaning assembly includes rotating base, installation part, lifting piece, groove slag removal unit, blowing unit, polishing unit, dust collection head and negative pressure machine;Through conveying positioning unit, workpiece after spot welding is turned over and moved to the bottom of welding module, and base layer welding is carried out to joint seam by welding module;After base layer welding is completed, installation part is moved to the top of weld, and then the slag in groove is removed by groove slag removal unit, then most of the slag left in groove is blown out by blowing unit, then polishing unit is polished in groove again, and finally the slag in groove is sucked out by dust collection head;Then, transition layer is welded by welding module again, so as to avoid the defect of slag inclusion, which causes the transition layer and the base layer to be layered.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically a composite plate welding device. Background Technology

[0002] Composite plates are low-cost, high-performance, and energy-efficient materials made of carbon steel as the base material and stainless steel or other materials as the cladding material, formed by brazing and hot rolling of the two metals. They are used in many fields such as petroleum, chemical, salt, and water conservancy and power. The welding combinations generally have four forms: single-layer composite, double-layer composite, single-overlap composite, and mixed-overlap composite. However, general welding equipment cannot meet the requirements of the number of welds produced by these various combinations, as well as the welding of the four sides. Furthermore, for welding large composite steel plates, the transition welding stage after the base layer welding requires a grinding and cleaning step. Traditional grinding tools cannot adapt to angle changes, making slag removal difficult and requiring manual cleaning, which is inconvenient. Therefore, a device that meets these shortcomings is needed. Summary of the Invention

[0003] The purpose of this invention is to provide a composite plate welding device to solve the problems raised in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: the welding device includes a gantry, a conveying and positioning unit is provided on one side of the gantry, and a welding module is provided on the gantry; The welding module includes a displacement component, a hollow rotating platform is installed at the actuator end of the displacement component, a connecting block is installed at the bottom of the hollow rotating platform, a welding torch adjustment component is installed on one side of the connecting block, and a welding slag cleaning component is installed on the other side. The slag cleaning assembly includes a rotating base, mounting section, mounting groove, lifting component, slag removal unit in the groove, blowing unit, grinding unit, dust suction head, and negative pressure unit; The displacement component is equipped with a negative pressure unit at its actuator end. A rotating base is mounted on the connecting block, and an installation part is mounted on the rotating base. The installation part has an installation groove, in which a slag removal unit, a blowing unit, a grinding unit, and a dust extraction head are sequentially installed. The dust extraction head and the blowing unit are connected to the input and output ends of the negative pressure unit via pipes, respectively. A lifting component is installed in the installation groove. During welding, the workpiece after spot welding is flipped and moved to the bottom of the welding module by the conveying and positioning unit. The displacement component drives the welding torch adjustment component to move, and its angle is adjusted by the hollow rotating platform. The welding torch is used to perform base welding on the joint. After the base welding is completed, the welding torch is used to perform base welding on the joint. The slag cleaning component cleans the slag and oxide scale inside and on the sidewalls of the weld. At this time, the installation unit is moved to the top of the weld by the welding module and the angle is adjusted by rotating the base. Then, the lifting component drives the slag removal unit, blowing unit, grinding unit and dust suction head to descend and adjust the distance from the tank to move in a straight line along the weld. First, the slag removal unit removes the slag from the sidewalls and bottom of the tank. Then, the blowing unit blows out most of the debris left in the tank. Then, the grinding unit grinds the tank. Finally, the dust suction head sucks out the debris in the tank. After this process, the welding module welds the transition layer to avoid the slag inclusion defect causing the transition layer to delaminate from the base layer.

[0005] The welding torch adjustment assembly includes an angle-adjusting turntable mounted on one side of the connecting block. The turntable has longitudinal and transverse sliding modules, each with an adjusting rod. Multiple locking plates are slidably mounted on the adjusting rods. Rotary seats and brackets are mounted on the locking plates. The welding torch is mounted on the rotary seat, and a sensor module is mounted on the bracket. When welding, the angle of the locking plates can be changed via the angle-adjusting turntable, and the angle between the welding torch and the adjusting rod can be adjusted via the rotary seat. The sensor module is used for alignment and monitoring. For horizontal welds in composite plates with two or more layers, multiple welding torches can be installed, and the adjusting rod can be rotated via a hollow rotating platform to make it perpendicular to the weld. The distance between the welding torches can then be adjusted via the locking plates to accommodate the distance between multiple welds. For vertical welds, the welding torch is leveled by adjusting the rotary seat, allowing for the welding of vertical welds.

[0006] The slag removal unit inside the tank includes a cover mounted on a lifting component. A support rod is installed at the bottom of the cover, and a mounting block is installed at the bottom of the support rod. Symmetrically arranged chambers are formed within the mounting block, and pistons are slidably mounted within each chamber. The pistons are connected to the bottom of the chambers by springs, and a stopper rod is mounted on the pistons. Electric push rods are symmetrically mounted near the top of the support rod. A vertical slide rod is mounted on the actuating end of the electric push rod, and a crossbar is slidably mounted on the vertical slide rod. An air supply component is installed inside the cover, and two air passages are formed within the support rod. Each air passage is connected to the output end of the air supply component via a pipe. The two air passages are connected to the corresponding chambers. Grinding parts are rotatably mounted on the stopper rod and crossbar. When grinding the weld, the cover is driven to descend by the lifting device, so that the support rod and the mounting block descend synchronously. When the page roller touches the side wall of the weld, the stopper rod on the corresponding side is squeezed to adapt to the included angle in the groove. After bonding, the air supply device injects air into the chamber through the air passage and maintains pressure, so that one end of the page roller is positioned. Then, the crossbar slides up and down along the vertical slide bar by the extension or retraction of the electric push rod, thereby adjusting the tilt angle of the page roller to achieve the effect of bonding with the side wall.

[0007] The grinding components in the groove include a retainer, one end of which is rotatably mounted on the end of the stopper rod, and the other end is rotatably mounted on the crossbar. A leaf roller is rotatably mounted on the retainer, and a drive motor is mounted on the top of the retainer. The drive motor and the leaf roller are driven by gear meshing.

[0008] The blowing unit includes an adjustment plate mounted on the lifting component. A screw is rotatably mounted on the bottom of the adjustment plate, and an installation rod is slidably mounted on the screw. A rotary motor is mounted on the bottom of the installation rod, and an air blowing head is mounted on the output shaft of the rotary motor. The air blowing head is connected to a negative pressure machine through a pipe. After the welding slag is removed, the blowing unit blows the welding slag out of the tank. The blowing angle of the air blowing head is adjusted by rotating the rotary motor, and the position of the installation rod is adjusted by driving the screw to rotate the motor. This allows the air blowing head to be conveniently blown from one side of the tank.

[0009] The grinding unit includes a grinding motor mounted on the lifting component. An elastic grinding head is mounted on the output shaft of the grinding motor. After most of the welding slag is blown out, the lifting component presses down the elastic grinding head to make it fill the groove better. The grinding motor drives the elastic grinding head to rotate and grind the inner wall of the groove.

[0010] The conveying and positioning unit includes a flipping positioner and a roller bed symmetrically installed about the gantry. The roller bed is installed on the side of the flipping positioner away from the gantry. The bottom of the flipping positioner is equipped with a slide rail, and a slide rail is provided between the two flipping positioners. A trolley is slidably installed on the slide rail. When the pre-processed composite plate is to be welded, the composite plate is conveyed to the trolley by the roller bed, and then the composite plate is placed on the flipping positioner by the trolley. The flipping positioner clamps and rotates the plate, and then moves it to the area below the welding torch adjustment assembly.

[0011] The displacement assembly includes a slide assembly mounted on a gantry, a material platform slidably mounted on the slide assembly, a cross arm mounted on the material platform, a slider plate slidably mounted on the cross arm, a lifting column slidably mounted on the slider plate, and a hollow rotating platform at the bottom of the lifting column. After the composite plate moves to the designated position, the slide assembly drives the material platform and cross arm to slide, the slider plate adjusts the horizontal distance between the lifting column and the composite plate, and the lifting column adjusts the vertical distance between the welding torch adjustment assembly and the composite plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This application uses a conveying and positioning unit to flip and move the spot-welded workpiece to the bottom of the welding module, and then uses the welding module to perform base welding on the joint. After the base welding is completed, the welding slag and oxide scale inside the weld and on the sidewalls are cleaned by the welding slag cleaning component. At this time, the installation part is moved to the top of the weld by the welding module and the angle is adjusted by rotating the base. Then, the lifting component drives the slag removal unit, blowing unit, grinding unit and dust suction head to descend and adjust the distance from the tank to move in a straight line along the weld. First, the slag removal unit removes the welding slag from the sidewalls and bottom of the tank. Then, the blowing unit blows out most of the debris left in the tank. Then, the grinding unit grinds the tank. Finally, the dust suction head sucks out the debris in the tank. After this process, the welding module welds the transition layer to avoid slag inclusion defects that cause the transition layer to separate from the base layer.

[0013] 2. This application uses a lifting component to drive the cover to descend, causing the support rod to descend synchronously with the mounting block. When the page roller touches the side wall of the welding component, it squeezes the corresponding side plug rod to adapt to the included angle in the groove. After bonding, the air supply component injects air into the cavity through the air passage and maintains pressure, thereby positioning one end of the page roller. Then, the electric push rod extends or retracts to make the crossbar slide up and down along the vertical slide bar, thereby adjusting the tilt angle of the page roller to achieve the effect of bonding with the side wall.

[0014] 3. The welding torch of this application achieves planar position adjustment through adjusting rod, angle adjusting turntable and hollow rotating platform, thereby enabling the welding of horizontal welds and vertical welds. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall first-view structure of the present invention; Figure 2 This is a schematic diagram of the overall second-view structure of the present invention; Figure 3 This is a schematic diagram of the welding module structure of the present invention; Figure 4 This is a schematic diagram of the welding torch adjustment assembly of the present invention; Figure 5 This is a schematic diagram of the first cross-sectional structure of the welding slag cleaning assembly of the present invention; Figure 6 This is a schematic diagram of the second cross-sectional structure of the welding slag cleaning assembly of the present invention; Figure 7 This is a schematic diagram of the third cross-sectional structure of the welding slag cleaning assembly of the present invention; Figure 8 This is a schematic diagram of the fourth cross-sectional structure of the welding slag cleaning assembly of the present invention; Figure 9 For this Figure 8 A magnified structural diagram at point A in the diagram.

[0016] In the diagram: 1. Gantry; 11. Conveying and positioning unit; 111. Tilting and shifting machine; 1111. Slide rail; 112. Roller bed; 113. Slide track; 114. Trolley; 2. Welding module; 21. Displacement assembly; 211. Slide assembly; 212. Material platform; 213. Cross arm; 214. Sliding plate; 215. Lifting column; 22. Hollow rotating platform; 23. Connecting block; 24. Welding torch adjustment assembly; 241. Angle adjustment turntable; 242. Longitudinal and transverse sliding module; 243. Adjusting rod; 244. Locking plate; 245. Rotary seat; 246. Bracket; 247. Welding torch; 248. Sensing module; 3. Slag Cleaning Components; 31. Rotating Base; 32. Mounting Part; 33. Mounting Slot; 34. Lifting Component; 35. Slag Removal Unit in Slot; 351. Cover; 352. Support Rod; 353. Mounting Block; 3531. Chamber; 354. Piston; 355. Plug Rod; 356. Electric Push Rod; 357. Vertical Slide Rod; 358. Cross Rod; 359. Air Supply Components; 3510. Cage; 3511. Leaf Roller; 3512. Drive Motor; 36. Blowing Unit; 361. Adjusting Plate; 362. Screw; 363. Mounting Rod; 364. Rotary Motor; 365. Air Blowing Head; 37. Grinding Unit; 371. Grinding Motor; 372. Elastic Grinding Head; 38. Dust Suction Head. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example: Figures 1-9 As shown, the present invention provides a technical solution for a composite plate welding device. The welding device includes a gantry 1, a conveying and positioning unit 11 is provided on one side of the gantry 1, and a welding module 2 is provided on the gantry 1. The welding module 2 includes a displacement component 21. A hollow rotating platform 22 is installed at the execution end of the displacement component 21. A connecting block 23 is installed at the bottom of the hollow rotating platform 22. A welding torch adjustment component 24 is installed on one side of the connecting block 23, and a welding slag cleaning component 3 is installed on the other side. The slag cleaning assembly 3 includes a rotating base 31, a mounting part 32, a mounting groove 33, a lifting component 34, a slag removal unit in the groove 35, a blowing unit 36, a grinding unit 37, a dust suction head 38, and a negative pressure machine; The displacement component 21 is equipped with a negative pressure machine at its actuator end. A rotating base 31 is mounted on the connecting block 23, and an installation part 32 is mounted on the rotating base 31. The installation part 32 has multiple installation slots 33, in which a slag removal unit 35, a blowing unit 36, a grinding unit 37, and a dust suction head 38 are sequentially installed. The dust suction head 38 and the blowing unit 36 ​​are respectively connected to the input and output ends of the negative pressure machine through pipes. A lifting component 34 is installed in the installation slot 33. When welding is performed, the spot-welded workpiece is flipped and moved to the bottom of the welding module 2 by the conveying and positioning unit 11. The displacement component 21 drives the welding gun adjustment component 24 to move, and the rotation angle is adjusted by the hollow rotating platform 22. The welding module 2 then performs base treatment on the splice seam. Welding; After the base layer welding is completed, the welding slag and oxide scale inside the weld and on the side wall are cleaned by the welding slag cleaning component 3; At this time, the installation part 32 is moved to the top of the weld by the welding module 2 and the angle is adjusted by the rotating base 31. Then, the lifting part 34 drives the slag removal unit 35, the blowing unit 36, the grinding unit 37 and the dust suction head 38 to descend respectively, and adjusts the distance from the tank to move in a straight line along the weld. First, the welding slag inside the tank is removed by the slag removal unit 35, the blowing unit 36 ​​blows out most of the debris left in the tank, the grinding unit 37 grinds the tank, and finally the dust suction head 38 sucks out the debris in the tank. After this process is completed, the welding module 2 welds the transition layer to avoid the slag inclusion defect causing the transition layer to separate from the base layer.

[0019] The welding torch adjustment assembly 24 includes an angle-adjusting turntable 241 mounted on one side of the connecting block 23. A longitudinal and transverse sliding module 242 is mounted on the angle-adjusting turntable 241. An adjusting rod 243 is mounted on the transverse and longitudinal sliding module 242. Multiple locking plates 244 are slidably mounted on the adjusting rod 243. A rotating seat 245 and a bracket 246 are mounted on the locking plates 244. A welding torch 247 is mounted on the rotating seat 245, and a sensing module 248 is mounted on the bracket 246. When welding the weld seam, the angle of the locking plates 244 can be changed via the angle-adjusting turntable 241. The angle between the welding torch 247 and the adjusting rod 243 is adjusted by the rotating seat 245, and the alignment is monitored by the sensor module 248. For horizontal welds of composite plates with two or more layers, multiple welding torches 247 can be installed and the adjusting rod 243 can be rotated by the hollow rotating platform 22 to make the adjusting rod 243 perpendicular to the weld. Then, the distance between the welding torches 247 is adjusted by the locking plate 244 to adapt to the distance between multiple welds. For vertical welds, the welding torch 247 is made horizontal by adjusting the rotating seat 245, and then vertical welds can be welded.

[0020] The slag removal unit 35 in the tank includes a cover 351 mounted on a lifting component 34. A support rod 352 is mounted at the bottom of the cover 351, and an mounting block 353 is mounted at the bottom end of the support rod 352. A chamber 3531 is symmetrically formed within the mounting block 353. A piston 354 is slidably mounted within the chamber 3531 and is connected to the bottom of the chamber 3531 by a spring. A stopper rod 355 is mounted on the piston 354. Electric push rods 356 are symmetrically mounted near the top of the support rod 352. A vertical slide rod 357 is mounted on the actuating end of the electric push rod 356, and a crossbar 358 is slidably mounted on the vertical slide rod 357. An air supply component 359 is installed inside the cover 351. Two air passages 3521 are formed inside the support rod 352, and the two air passages 3521 are connected to the air supply component 359 via pipes. The output end of the air component 359 is connected, and the ends of the two air passages 3521 are respectively connected to the corresponding chambers 3531. The groove grinding parts are rotatably installed on the stop rod 355 and the cross rod 358. When grinding the weld, the cover 351 is driven to descend by the lifting component 34, so that the support rod 352 and the mounting block 353 descend synchronously. When the page roller 3511 touches the side wall of the weld, the stop rod 355 on the corresponding side is squeezed to adapt to the groove angle. After bonding, the air supply component 359 injects air into the chamber 3531 through the air passage 3521 and maintains pressure, so that one end of the page roller 3511 is positioned. Then, the cross rod 358 slides up and down along the vertical slide bar 357 by the extension or retraction of the electric push rod 356, thereby adjusting the tilt angle of the page roller 3511 to achieve the effect of bonding with the side wall.

[0021] The grinding component in the groove includes a retainer 3510, one end of which is rotatably mounted on the end of the stopper rod 355, and the other end is rotatably mounted on the crossbar 358. A leaf roller 3511 is rotatably mounted on the retainer 3510, and a drive motor 3512 is mounted on the top of the retainer 3510. The drive motor 3512 and the leaf roller 3511 are driven by gear meshing.

[0022] The blowing unit 36 ​​includes an adjustment plate 361 mounted on the lifting component 34. A screw 362 is rotatably mounted on the bottom of the adjustment plate 361. An installation rod 363 is slidably mounted on the screw 362. A rotary motor 364 is mounted on the bottom of the installation rod 363. An air blowing head 365 is mounted on the output shaft of the rotary motor 364. The air blowing head 365 is connected to a negative pressure machine through a pipe. After the welding slag is removed, the welding slag in the tank is blown out of the tank by the blowing unit 36. The blowing angle of the air blowing head 365 is adjusted by rotating the rotary motor 364. The position of the installation rod 363 is adjusted by driving the screw 362 to rotate by the motor. This allows the air blowing head 365 to be conveniently blown on one side of the tank.

[0023] The grinding unit 37 includes a grinding motor 371 mounted on the lifting member 34. An elastic grinding head 372 is mounted on the output shaft of the grinding motor 371. After most of the welding slag is blown out, the lifting member 34 presses down the elastic grinding head 372 so that it fills the groove better. The grinding motor 371 drives the elastic grinding head 372 to rotate and grind the inner wall of the groove.

[0024] The conveying and positioning unit 11 includes a flipping and positioning machine 111 and a roller bed 112 symmetrically installed about the gantry 1. The roller bed 112 is installed on the side of the flipping and positioning machine 111 away from the gantry 1. The bottom of the flipping and positioning machine 111 is provided with a slide rail 1111, and a slide rail 113 is provided between the two flipping and positioning machines 111. A trolley 114 is slidably installed on the slide rail 113. When the composite plate after the current processing is completed is welded, the composite plate is conveyed to the trolley 114 through the roller bed 112. Then, the composite plate is placed on the flipping and positioning machine 111 through the trolley 114. The flipping and positioning machine 111 clamps and rotates the plate, and then moves it to the area below the welding gun adjustment assembly 24. After the top of the composite plate is welded, the composite plate is placed horizontally and carried by the trolley 114. Then, the trolley 114 lifts the plate from the clamping arm near the roller bed 112 and slides it forward to the clamping arm on the side away from the roller bed 112. At this time, the top and bottom of the clamped and positioned composite plate are interchanged.

[0025] The displacement assembly 21 includes a slide assembly 211 mounted on the gantry 1. A material platform 212 is slidably mounted on the slide assembly 211. A cross arm 213 is mounted on the material platform 212. A slider plate 214 is slidably mounted on the cross arm 213. A lifting column 215 is slidably mounted on the slider plate 214. A hollow rotating platform 22 is provided at the bottom of the lifting column 215. After the composite plate moves to the designated position, the slide assembly 211 drives the material platform 212 and the cross arm 213 to slide. The slider plate 214 adjusts the horizontal distance between the lifting column 215 and the composite plate. Then, the lifting column 215 adjusts the vertical distance between the welding gun adjustment assembly 24 and the composite plate.

[0026] Working principle of the invention: During welding, the composite plate is conveyed to the trolley 114 via the roller bed 112, and then placed on the flipping and positioning machine 111 via the trolley 114. The flipping and positioning machine 111 clamps and rotates the plate, and then moves it to the area below the welding gun adjustment assembly 24. The angle of the locking plate 244 is changed by the angle adjustment turntable 241, and the angle between the welding gun 247 and the adjusting rod 243 is adjusted by the rotating seat 245. The sensor module 248 is used for alignment and monitoring to ensure that the welding gun 247 is aligned with the weld seam. Then, the material table 212 and the cross arm 213 are slid by the slide assembly 211. The horizontal distance between the lifting column 215 and the composite plate is adjusted by the slider plate 214. Then, the vertical distance between the welding gun adjustment assembly 24 and the composite plate is adjusted by the lifting column 215. Finally, the base layer welding is performed on the splice seam.

[0027] After the base welding is completed, the welding slag and oxide scale inside the weld and on the side wall are cleaned by the welding slag cleaning component 3. The cover 351 is driven to descend by the lifting component 34, so that the support rod 352 and the mounting block 353 descend synchronously. When the page roller 3511 touches the side wall of the welded part, the corresponding side plug rod 355 is squeezed to adapt to the included angle in the groove. After the fit is achieved, the air supply component 359 injects air into the chamber 3531 through the air passage 3521 and maintains pressure, thereby positioning one end of the page roller 3511. Then, the electric push rod 356 extends or retracts to make the cross bar 358 slide up and down along the vertical slide bar 357, thereby adjusting the tilt angle of the page roller 3511. Then, the side of the page roller 3511 is polished. The wall is then blown out of the tank by the blowing unit 36. The blowing angle of the blowing head 365 is adjusted by rotating the rotating motor 364. The position of the mounting rod 363 is adjusted by rotating the screw 362 driven by the motor, so that the blowing head 365 can be conveniently blown on one side of the tank. After most of the welding slag is blown out, the lifting component 34 presses down the elastic grinding head 372 to make it fill the tank better. The grinding motor 371 drives the elastic grinding head 372 to rotate and grind the inner wall of the tank. Finally, the dust suction head 38 sucks out the debris in the tank. After this process is completed, the welding module 2 welds the transition layer to avoid the slag inclusion defect causing the transition layer to separate from the base layer.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A composite plate welding device, characterized in that: The welding device includes a gantry (1), a conveying and positioning unit (11) is provided on one side of the gantry (1), and a welding module (2) is provided on the gantry (1). The welding module (2) includes a displacement component (21), a hollow rotating platform (22) is installed at the execution end of the displacement component (21), a connecting block (23) is installed at the bottom of the hollow rotating platform (22), a welding torch adjustment component (24) is installed on one side of the connecting block (23), and a welding slag cleaning component (3) is installed on the other side. The welding slag cleaning assembly (3) includes a rotating base (31), a mounting part (32), a mounting groove (33), a lifting component (34), a slag removal unit (35) in the groove, a blowing unit (36), a grinding unit (37), a dust suction head (38), and a negative pressure machine; The displacement component (21) is equipped with a negative pressure machine at its actuating end. A rotating base (31) is installed on the connecting block (23). An installation part (32) is installed on the rotating base (31). An installation groove (33) is provided on the installation part (32). A slag removal unit (35), a blowing unit (36), a grinding unit (37), and a dust suction head (38) are installed in sequence in the installation groove (33). The dust suction head (38) and the blowing unit (36) are respectively connected to the input end and the output end of the negative pressure machine through pipes. A lifting component (34) is installed in the installation groove (33).

2. The composite plate welding device according to claim 1, characterized in that: The welding torch adjustment assembly (24) includes an angle adjustment turntable (241) installed on one side of the connecting block (23). A longitudinal and transverse sliding module (242) is installed on the angle adjustment turntable (241). An adjustment rod (243) is installed on the longitudinal and transverse sliding module (242). Multiple locking plates (244) are slidably installed on the adjustment rod (243). A rotating seat (245) and a bracket (246) are installed on the locking plate (244). A welding torch (247) is installed on the rotating seat (245). A sensing module (248) is installed on the bracket (246).

3. The composite plate welding device according to claim 1, characterized in that: The slag removal unit (35) in the tank includes a cover (351) installed on a lifting component (34). A support rod (352) is installed at the bottom of the cover (351). An installation block (353) is installed at the bottom end of the support rod (352). A chamber (3531) is symmetrically opened in the installation block (353). A piston (354) is slidably installed in the chamber (3531). The piston (354) is connected to the bottom of the chamber (3531) by a spring. A stopper rod (355) is installed on the piston (354). An electric motor is symmetrically installed near the top of the support rod (352). The push rod (356) has a vertical slide rod (357) installed at its actuating end. A crossbar (358) is slidably installed on the vertical slide rod (357). An air supply component (359) is installed inside the cover (351). Two air passages (3521) are opened inside the support rod (352). The two air passages (3521) are respectively connected to the output end of the air supply component (359) through pipes, and the ends of the two air passages (3521) are respectively connected to the corresponding chambers (3531). A groove grinding component is rotatably installed on the plug rod (355) and the crossbar (358).

4. The composite plate welding device according to claim 3, characterized in that: The grinding component in the groove includes a retainer (3510), one end of which is rotatably mounted on the end of the stopper rod (355), and the other end is rotatably mounted on the crossbar (358). A leaf roller (3511) is rotatably mounted on the retainer (3510), and a drive motor (3512) is mounted on the top of the retainer (3510). The drive motor (3512) and the leaf roller (3511) are driven by gear meshing.

5. The composite plate welding device according to claim 1, characterized in that: The blowing unit (36) includes an adjustment plate (361) mounted on the lifting component (34). A screw (362) is rotatably mounted on the bottom of the adjustment plate (361). An installation rod (363) is slidably mounted on the screw (362). A rotary motor (364) is mounted on the bottom of the installation rod (363). An air blowing head (365) is mounted on the output shaft of the rotary motor (364). The air blowing head (365) is connected to the negative pressure machine through a pipe.

6. The composite plate welding device according to claim 1, characterized in that: The grinding unit (37) includes a grinding motor (371) mounted on the lifting component (34), and an elastic grinding head (372) is mounted on the output shaft of the grinding motor (371).

7. The composite plate welding device according to claim 1, characterized in that: The conveying and positioning unit (11) includes a flipping and positioning machine (111) and a roller bed (112) symmetrically installed about the gantry (1). The roller bed (112) is installed on the side of the flipping and positioning machine (111) away from the gantry (1). The bottom of the flipping and positioning machine (111) is provided with a slide rail (1111), and a slide rail (113) is provided between the two flipping and positioning machines (111). A trolley (114) is slidably installed on the slide rail (113).

8. The composite plate welding device according to claim 1, characterized in that: The displacement component (21) includes a slide assembly (211) mounted on a gantry (1), a material platform (212) is slidably mounted on the slide assembly (211), a cross arm (213) is mounted on the material platform (212), a slider plate (214) is slidably mounted on the cross arm (213), a lifting column (215) is slidably mounted on the slider plate (214), and a hollow rotating platform (22) is provided at the bottom of the lifting column (215).

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