CN210967681U - Welding machine for metal plate - Google Patents
Welding machine for metal plate Download PDFInfo
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- CN210967681U CN210967681U CN201922059540.8U CN201922059540U CN210967681U CN 210967681 U CN210967681 U CN 210967681U CN 201922059540 U CN201922059540 U CN 201922059540U CN 210967681 U CN210967681 U CN 210967681U
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Abstract
The utility model relates to the technical field of mechanical equipment, in particular to a welding machine for metal plates, which can effectively improve the stability of plates when the plates move and the welding strength and the welding quality by carrying out automatic welding treatment on the plates, and can effectively prevent the high temperature generated by a welding gun from scalding the human body by keeping away from the welding gun in a working state by the human body, thereby improving the practicability and the reliability; including base, left support plate, welder, two sets of lead screw extension boards, lead screw, shaft coupling, first pivot, motor cabinet, motor, second pivot, reduction gear and workstation, the top left side at the base is installed to the bottom of left support plate, and the upside of left support plate is provided with hydraulic means, and hydraulic means's right-hand member is provided with hoisting device, and the bottom at hoisting device is installed on welder's top.
Description
Technical Field
The utility model relates to a mechanical equipment's technical field especially relates to a welding machine for panel beating.
Background
As is well known, the panel beating is producing man-hour, often need to weld its concatenation line, current welding mode is mainly that the workman welds the panel beating concatenation position through welder, during manual welding, welder need move along the concatenation line, because human stability is relatively poor, welder produces easily when moving and rocks, it changes to lead to treating to wait to weld the distance between the position on welder bottom and the panel beating, solder joint distribution uniformity is relatively poor, lead to welding strength and quality relatively poor, human body is near apart from welder bottom during manual welding simultaneously, the high temperature that welder produced causes the scald to the human body easily.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a through carrying out automated welding to the sheet material and handling, stability when can effectively improving the sheet material and remove effectively improves welding strength and welding quality, and operating condition's welder can be kept away from to the human body simultaneously, and the high temperature that effectively prevents welder from producing causes the scald to the human body, improves the welding machine for the panel beating of practicality and reliability.
The utility model discloses a welding machine for sheet metal, which comprises a base, a left support plate, a welding gun, two sets of lead screw support plates, a lead screw, a shaft coupling, a first rotating shaft, a motor base, a motor, a second rotating shaft, a speed reducer and a workbench, wherein the bottom end of the left support plate is arranged at the left side of the top end of the base, the upper side of the left support plate is provided with a hydraulic device, the right end of the hydraulic device is provided with a lifting device, the top end of the welding gun is arranged at the bottom end of the lifting device, the bottom ends of the two sets of lead screw support plates are respectively arranged at the front side and the rear side of the top end of the base, the rear end of the lead screw can be rotatably arranged at the upper side of the front end of the rear lead screw support plate, the front end of the lead screw is connected with the rear end of the shaft coupling, the front end of the first rotating shaft passes through the upper, the motor base is positioned in front of the front screw support plate, the bottom end of the motor base is installed on the front side of the top end of the base, the bottom end of the motor is installed on the left side of the top end of the motor base, the right end of the motor is connected with the left end of the second rotating shaft, the right end of the second rotating shaft is connected with the left end of the speed reducer, the bottom end of the speed reducer is installed on the right side of the top end of the motor base, the rear end of the speed reducer is connected with the front end of the first rotating shaft, the workbench is positioned above the screw rod, the workbench corresponds to a welding gun in position, clamping devices are arranged on the left side and the right side of the top end of the workbench, screw sleeves are installed on the outer wall of the screw rod in a threaded mode, the top ends of the screw sleeves are installed on the front side of the bottom end of the workbench, four groups of sliding blocks are uniformly; the method comprises the steps of placing a sheet on the top end of a workbench, clamping and fixing the sheet through two groups of clamping devices, driving a lifting device and a welding gun to move transversely through a hydraulic device, moving the bottom end of the welding gun to a position, corresponding to a position to be welded, at the top end of the sheet, controlling the welding gun to move downwards through the lifting device, enabling the bottom end of the welding gun to be close to the position to be welded at the top end of the sheet, opening the welding gun, welding the position to be welded on the sheet through the bottom end of the welding gun, simultaneously turning on a motor, driving a speed reducer to operate through a second rotating shaft, driving a lead screw to rotate through a first rotating shaft and a coupler, driving a screw sleeve to move back and forth at a constant speed through the rotating lead screw, driving the sheet on the workbench and the sheet on the workbench to move back and forth at a constant, the four groups of sliding blocks and the two groups of guide rails are used for supporting and guiding the workbench, the sheet materials are subjected to automatic welding treatment, the stability of the sheet materials during moving can be effectively improved, the distance between welding positions to be welded between the bottom end of a welding gun and the top end of the sheet materials is kept constant, the distribution uniformity of welding spots on the sheet materials is improved, the welding strength and the welding quality are effectively improved, the physical force and time during manual welding are saved, the working efficiency is improved, the human body can be kept away from the welding gun in a working state, the high temperature generated by the welding gun is effectively prevented from scalding the human body, and the practicability.
The utility model discloses a welding machine for panel beating, hydraulic means include hydraulic pressure station, hydraulic stem, hydraulic pressure pipe and remove the seat, and the right-hand member of hydraulic pressure station is installed at the left end upside of left branch fagging, and the left end of hydraulic stem is installed at the right-hand member upside of left branch fagging, and the bottom left side and the right side of hydraulic pressure pipe communicate with the top of hydraulic pressure station and the top of hydraulic stem respectively, and the right-hand member of hydraulic stem is connected with the left end middle part of removing the seat, and the bottom of removing the seat is connected with the top of hoisting device; open the hydraulic pressure station, the right-hand member that the hydraulic pressure pole was controlled through the hydraulic pressure pipe in the hydraulic pressure station removes about, and the right-hand member drive of hydraulic pressure pole removes seat, hoisting device and welder and removes, through setting up hydraulic means, can conveniently adjust the transverse position of butt welding rifle, conveniently makes welder can carry out welding process to different positions on the sheet material, improves practicality and reliability.
The utility model discloses a welding machine for panel beating, hydraulic means still include right branch fagging and two sets of guide bars, and the bottom of right branch fagging is installed on the top right side of base, and the right-hand member of two sets of guide bars is installed respectively at the front upper side of left end and back upside of right branch fagging, and the left end of two sets of guide bars passes the front side and the rear side of removal seat respectively and installs respectively at the front upper side of right-hand member and back upside of left branch fagging, and two sets of guide bars all can slide connections with the removal seat; when moving the seat and moving about, remove the seat and can slide on two sets of guide bars, through setting up right branch fagging and two sets of guide bars, can conveniently support and lead removing the seat, stability when improving the removal seat and removing improves the practicality.
The utility model discloses a welding machine for panel beating, hoisting device include first cylinder, first push rod and push pedal, and the top of first cylinder is installed in the bottom middle part of moving the seat, and the top of first push rod passes through the bottom middle part of first cylinder and inserts inside the first cylinder, and the bottom of first push rod is connected with the top of push pedal, and the bottom of push pedal is connected with welder's top; open first cylinder, first cylinder can drive first push rod and push pedal and reciprocate, and the push pedal drives welder and reciprocates to the operating position and the idle position of convenient butt welder are controlled, and when welder was idle simultaneously, the sheet material on the workstation can be kept away from to welder's bottom, makes things convenient for the last unloading work of sheet material, improves the reliability.
The utility model discloses a welding machine for panel beating, hoisting device still include two sets of gas poles, and the bottom of two sets of gas poles is installed respectively in the top left side and the right side of push pedal, and the top of two sets of gas poles is installed respectively in the bottom left side and the right side of removal seat; when the push pedal reciprocated, the bottom that the push pedal drove two sets of gas poles reciprocated, through setting up two sets of gas poles, can conveniently support and lead the push pedal, stability when improving push pedal and welder and removing prevents that welder from producing and rocking improves the practicality.
The utility model discloses a welding machine for panel beating, clamping device includes clamping bracket, second cylinder, second push rod and splint, and the bottom of clamping bracket is installed in the top left side of workstation, and the bottom outside of second cylinder is installed in the top right side of clamping bracket, and the bottom middle part of second cylinder is connected with the top of second push rod, and the bottom of second push rod passes the right side of clamping bracket and stretches out to the below of clamping bracket, and the top middle part of splint is installed in the bottom of second push rod; the top at the workstation is placed to the sheet material, and the top of sheet material is located the below of splint, opens the second cylinder, and the second cylinder promotes second push rod and splint and moves down, and the bottom of splint contacts with the top of sheet material and carries out extrusion clamping to the sheet material and handle, through setting up clamping device, can conveniently press from both sides tightly fixed to the sheet material, improves the stability when sheet material removes, produces when preventing the sheet material welding and rocks, improves welding quality, improves the reliability.
The utility model discloses a welding machine for sheet metal, the clamping device also comprises an antiskid plate, the top end of the antiskid plate is arranged at the bottom end of the clamping plate; when splint moved down, splint drove the antiskid ribbed tile and moved down, and the bottom of antiskid ribbed tile can contact with the top of sheet material, through setting up the antiskid ribbed tile, can conveniently carry out anti-skidding to the sheet material and handle, takes place to slide when preventing that the sheet material from removing and squints, improves the practicality.
The utility model discloses a welding machine for panel beating still includes the distancer, and the distancer is located the below of hydraulic stem, and the left end of distancer is installed at the right-hand member upside of left branch fagging, and the right-hand member position of distancer corresponds with the left end middle part position of left side gas pole; open the distancer, the distancer can detect the distance between the right-hand member of distancer and the left end of left side gas pole to remove the position and carry out real-time supervision about welding gun and push pedal, bump with other devices when effectively preventing welding gun and push pedal from removing, improve the security.
Compared with the prior art, the beneficial effects of the utility model are that: the method comprises the steps of placing a sheet on the top end of a workbench, clamping and fixing the sheet through two groups of clamping devices, driving a lifting device and a welding gun to move transversely through a hydraulic device, moving the bottom end of the welding gun to a position, corresponding to a position to be welded, at the top end of the sheet, controlling the welding gun to move downwards through the lifting device, enabling the bottom end of the welding gun to be close to the position to be welded at the top end of the sheet, opening the welding gun, welding the position to be welded on the sheet through the bottom end of the welding gun, simultaneously turning on a motor, driving a speed reducer to operate through a second rotating shaft, driving a lead screw to rotate through a first rotating shaft and a coupler, driving a screw sleeve to move back and forth at a constant speed through the rotating lead screw, driving the sheet on the workbench and the sheet on the workbench to move back and forth at a constant, the four groups of sliding blocks and the two groups of guide rails are used for supporting and guiding the workbench, the sheet materials are subjected to automatic welding treatment, the stability of the sheet materials during moving can be effectively improved, the distance between welding positions to be welded between the bottom end of a welding gun and the top end of the sheet materials is kept constant, the distribution uniformity of welding spots on the sheet materials is improved, the welding strength and the welding quality are effectively improved, the physical force and time during manual welding are saved, the working efficiency is improved, the human body can be kept away from the welding gun in a working state, the high temperature generated by the welding gun is effectively prevented from scalding the human body, and the practicability.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a top view of the base of FIG. 1;
FIG. 3 is an enlarged schematic top view of the hydraulic station of FIG. 1;
FIG. 4 is an enlarged view of the clamp bracket of FIG. 1;
in the drawings, the reference numbers: 1. a base; 2. a left support plate; 3. a welding gun; 4. a lead screw support plate; 5. a lead screw; 6. a coupling; 7. a first rotating shaft; 8. a motor base; 9. a motor; 10. a second rotating shaft; 11. a speed reducer; 12. a work table; 13. a threaded sleeve; 14. a slider; 15. a guide rail; 16. a hydraulic station; 17. a hydraulic lever; 18. a hydraulic tube; 19. a movable seat; 20. a right support plate; 21. a guide bar; 22. a first cylinder; 23. a first push rod; 24. pushing the plate; 25. a gas lever; 26. clamping the bracket; 27. a second cylinder; 28. a second push rod; 29. a splint; 30. an anti-skid plate; 31. a distance measuring instrument.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, the welding machine for metal plates of the present invention, when in operation, firstly, a sheet is placed on the top of a worktable 12, the sheet is clamped and fixed by two sets of clamping devices, a lifting device and a welding gun 3 are driven by a hydraulic device to move transversely, the bottom end of the welding gun 3 moves to the position corresponding to the top end of the sheet to be welded, the lifting device controls the welding gun 3 to move downwards, the bottom end of the welding gun 3 is close to the position to be welded on the top end of the sheet, the welding gun 3 is opened, the bottom end of the welding gun 3 performs welding treatment on the position to be welded on the sheet, meanwhile, a motor 9 is turned on, the motor 9 drives a reducer 11 to operate through a second rotating shaft 10, the reducer 11 drives a screw 5 to rotate through a first rotating shaft 7 and a shaft coupling 6, the rotating screw 5 drives a swivel nut 13 to move back and forth at a constant, the bottom end of the welding gun 3 carries out automatic welding treatment on the plate moving at a constant speed, the workbench 12 drives the four groups of sliding blocks 14 to respectively slide back and forth on the two groups of guide rails 15, the four groups of sliding blocks 14 and the two groups of guide rails 15 carry out inner supporting and guiding effects on the workbench 12, after welding of the plate is completed, the welding gun 3 is closed, the welding gun 3 is controlled to move upwards and restore to an initial position through the lifting device, the two groups of clamping devices are opened, and the plate is taken down.
The utility model discloses the main function who realizes does: the sheet material is automatically welded, so that the stability of the sheet material during movement can be effectively improved, the distance between the bottom end of a welding gun and a position to be welded at the top end of the sheet material is kept constant, the distribution uniformity of welding spots on the sheet material is improved, the welding strength and the welding quality are effectively improved, the physical strength and time during manual welding are saved, the working efficiency is improved, a human body can be far away from the welding gun in a working state, and the human body is effectively prevented from being scalded by high temperature generated by the welding gun; the hydraulic station is opened, the right end of the hydraulic rod is controlled by the hydraulic pipe to move left and right, the right end of the hydraulic rod drives the moving seat, the lifting device and the welding gun to move left and right, and the transverse position of the welding gun can be conveniently adjusted by arranging the hydraulic device, so that the welding gun can conveniently weld different positions on a plate; when the moving seat moves left and right, the moving seat can slide on the two groups of guide rods, and the right support plate and the two groups of guide rods are arranged, so that the moving seat can be conveniently supported and guided, and the stability of the moving seat during moving is improved; the first air cylinder is opened, the first air cylinder can drive the first push rod and the push plate to move up and down, the push plate drives the welding gun to move up and down, and therefore the working position and the idle position of the welding gun can be conveniently controlled, and meanwhile when the welding gun is idle, the bottom end of the welding gun can be far away from a plate on the workbench, so that the plate can be conveniently loaded and unloaded; when the push plate moves up and down, the push plate drives the bottom ends of the two groups of gas rods to move up and down, and the two groups of gas rods are arranged, so that the push plate can be conveniently supported and guided, the moving stability of the push plate and a welding gun is improved, and the welding gun is prevented from shaking; the plate is placed at the top end of the workbench, the top end of the plate is located below the clamping plate, the second air cylinder is opened and pushes the second push rod and the clamping plate to move downwards, the bottom end of the clamping plate is in contact with the top end of the plate and conducts extrusion clamping treatment on the plate, and the clamping device is arranged, so that the plate can be conveniently clamped and fixed, the stability of the plate during moving is improved, the plate is prevented from shaking during welding, and the welding quality is improved; when the clamping plate moves downwards, the clamping plate drives the anti-slip plate to move downwards, the bottom end of the anti-slip plate can be contacted with the top end of the plate, and the anti-slip plate is arranged, so that anti-slip treatment can be conveniently carried out on the plate, and the plate is prevented from sliding and deviating when moving; open the distancer, the distancer can detect the distance between the right-hand member of distancer and the left end of left side gas pole to control the horizontal position and carry out real-time supervision about welder and push pedal, with other devices bump when effectively preventing welder and push pedal from removing, improve practicality and reliability.
The welding machine for metal plates of the utility model adopts common mechanical modes such as installation mode, connection mode or setting mode, and can be implemented as long as the beneficial effects are achieved; the welding gun, hydraulic station, first cylinder, gas pole, second cylinder and distancer can be purchased in the market.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A welding machine for metal plates is characterized by comprising a base (1), a left support plate (2), a welding gun (3), two groups of lead screw support plates (4), a lead screw (5), a coupler (6), a first rotating shaft (7), a motor base (8), a motor (9), a second rotating shaft (10), a speed reducer (11) and a workbench (12), wherein the bottom end of the left support plate (2) is installed on the left side of the top end of the base (1), a hydraulic device is arranged on the upper side of the left support plate (2), a lifting device is arranged at the right end of the hydraulic device, the top end of the welding gun (3) is installed at the bottom end of the lifting device, the bottom ends of the two groups of lead screw support plates (4) are respectively installed on the front side and the rear side of the top end of the base (1), the rear end of the lead screw (5) is rotatably installed on the upper side of the front end of the lead screw support, the front end of a coupler (6) is connected with the rear end of a first rotating shaft (7), the front end of the first rotating shaft (7) penetrates through the upper side of a front lead screw support plate (4) and extends out of the front lead screw support plate (4), the first rotating shaft (7) is rotatably connected with the front lead screw support plate (4), a motor base (8) is located in front of the front lead screw support plate (4), the bottom end of the motor base (8) is installed on the front side of the top end of a base (1), the bottom end of a motor (9) is installed on the left side of the top end of the motor base (8), the right end of the motor (9) is connected with the left end of a second rotating shaft (10), the right end of the second rotating shaft (10) is connected with the left end of a speed reducer (11), the bottom end of the speed reducer (11) is installed on the right side of the top end of the motor base (8), the rear end of the speed reducer (11) is connected with the front end of the first rotating shaft (7), a workbench, the position of workstation (12) corresponds with the position of welder (3), the top left side and the right side of workstation (12) all are provided with clamping device, screw sleeve (13) are provided with to the spiral shell on the outer wall of lead screw (5), the bottom front side at workstation (12) is installed on the top of screw sleeve (13), the bottom outside of workstation (12) evenly is provided with four groups slider (14), the top left side and the right side of base (1) all vertically are provided with guide rail (15), the bottom of four groups slider (14) respectively with the top slidable connection of two sets of guide rail (15).
2. The welding machine for sheet metal according to claim 1, wherein the hydraulic device comprises a hydraulic station (16), a hydraulic rod (17), a hydraulic pipe (18) and a movable seat (19), the right end of the hydraulic station (16) is installed on the upper side of the left end of the left support plate (2), the left end of the hydraulic rod (17) is installed on the upper side of the right end of the left support plate (2), the left side and the right side of the bottom end of the hydraulic pipe (18) are respectively communicated with the top end of the hydraulic station (16) and the top end of the hydraulic rod (17), the right end of the hydraulic rod (17) is connected with the middle part of the left end of the movable seat (19), and the bottom end of the movable seat (19) is connected with the top end of the lifting device.
3. The welding machine for sheet metal according to claim 2, wherein the hydraulic device further comprises a right support plate (20) and two sets of guide rods (21), the bottom end of the right support plate (20) is installed on the right side of the top end of the base (1), the right ends of the two sets of guide rods (21) are respectively installed on the front upper side and the rear upper side of the left end of the right support plate (20), the left ends of the two sets of guide rods (21) respectively penetrate through the front side and the rear side of the movable seat (19) and are respectively installed on the front upper side and the rear upper side of the right end of the left support plate (2), and the two sets of guide rods (21) are both slidably connected with the movable seat (19).
4. The welding machine for sheet metal according to claim 3, wherein the lifting device comprises a first air cylinder (22), a first push rod (23) and a push plate (24), the top end of the first air cylinder (22) is installed in the middle of the bottom end of the moving seat (19), the top end of the first push rod (23) passes through the middle of the bottom end of the first air cylinder (22) and is inserted into the first air cylinder (22), the bottom end of the first push rod (23) is connected with the top end of the push plate (24), and the bottom end of the push plate (24) is connected with the top end of the welding gun (3).
5. The welding machine for sheet metal according to claim 4, wherein the lifting device further comprises two sets of air bars (25), bottom ends of the two sets of air bars (25) are respectively installed at left and right sides of a top end of the push plate (24), and top ends of the two sets of air bars (25) are respectively installed at left and right sides of a bottom end of the movable seat (19).
6. The welding machine for sheet metal according to claim 5, wherein the clamping device comprises a clamping support (26), a second air cylinder (27), a second push rod (28) and a clamping plate (29), the bottom end of the clamping support (26) is installed on the left side of the top end of the workbench (12), the outer side of the bottom end of the second air cylinder (27) is installed on the right side of the top end of the clamping support (26), the middle portion of the bottom end of the second air cylinder (27) is connected with the top end of the second push rod (28), the bottom end of the second push rod (28) penetrates through the right side of the clamping support (26) and extends to the lower portion of the clamping support (26), and the middle portion of the top end of the clamping plate (29) is installed at the bottom end of the second push rod (28.
7. A welding machine for sheet metal as claimed in claim 6, characterized in that the clamping means further comprise a skid plate (30), the top end of the skid plate (30) being mounted on the bottom end of the clamping plate (29).
8. The welding machine for sheet metal according to claim 7, further comprising a distance meter (31), wherein the distance meter (31) is located below the hydraulic rod (17), the left end of the distance meter (31) is installed on the upper side of the right end of the left support plate (2), and the position of the right end of the distance meter (31) corresponds to the middle position of the left end of the left air rod (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922059540.8U CN210967681U (en) | 2019-11-26 | 2019-11-26 | Welding machine for metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922059540.8U CN210967681U (en) | 2019-11-26 | 2019-11-26 | Welding machine for metal plate |
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| Publication Number | Publication Date |
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| CN210967681U true CN210967681U (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922059540.8U Active CN210967681U (en) | 2019-11-26 | 2019-11-26 | Welding machine for metal plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112171113A (en) * | 2020-09-16 | 2021-01-05 | 安徽省和翰光电科技股份有限公司 | Accurate spot welding device of electronic transformer |
| CN112719661A (en) * | 2020-12-19 | 2021-04-30 | 河南中车重型装备有限公司 | Supporting device for welding subway shell |
| CN112975092A (en) * | 2021-03-08 | 2021-06-18 | 李海涛 | Multifunctional three-dimensional spot welding machine |
| CN114799673A (en) * | 2022-06-02 | 2022-07-29 | 大唐长春第二热电有限责任公司 | Alloy welding frock is used in production of steam power plant |
| CN116618910A (en) * | 2023-07-25 | 2023-08-22 | 天津天禹模具有限公司 | Welding device and welding process for positionable automobile sheet metal forming die |
-
2019
- 2019-11-26 CN CN201922059540.8U patent/CN210967681U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112171113A (en) * | 2020-09-16 | 2021-01-05 | 安徽省和翰光电科技股份有限公司 | Accurate spot welding device of electronic transformer |
| CN112719661A (en) * | 2020-12-19 | 2021-04-30 | 河南中车重型装备有限公司 | Supporting device for welding subway shell |
| CN112975092A (en) * | 2021-03-08 | 2021-06-18 | 李海涛 | Multifunctional three-dimensional spot welding machine |
| CN114799673A (en) * | 2022-06-02 | 2022-07-29 | 大唐长春第二热电有限责任公司 | Alloy welding frock is used in production of steam power plant |
| CN116618910A (en) * | 2023-07-25 | 2023-08-22 | 天津天禹模具有限公司 | Welding device and welding process for positionable automobile sheet metal forming die |
| CN116618910B (en) * | 2023-07-25 | 2023-09-19 | 天津天禹模具有限公司 | Welding device and welding process for positionable automobile sheet metal forming die |
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