CN217618339U - Resistance welding device for T-shaped welding - Google Patents
Resistance welding device for T-shaped welding Download PDFInfo
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- CN217618339U CN217618339U CN202221521757.1U CN202221521757U CN217618339U CN 217618339 U CN217618339 U CN 217618339U CN 202221521757 U CN202221521757 U CN 202221521757U CN 217618339 U CN217618339 U CN 217618339U
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Abstract
The utility model discloses a resistance welding device for T-shaped welding, which comprises a welding host and a plurality of welding units arranged on the welding host, wherein each welding unit comprises an upper welding jig and a T-shaped welding jig; the upper welding jig is arranged above the T-shaped welding jig; the T-shaped welding jig comprises a fixing plate, a workpiece pressing assembly, a T-shaped copper table, a fixing copper seat, a lower insulating plate, a rear welding electrode, a lower welding electrode, a side welding electrode and an insulating jig; resistance welding device be equipped with the work piece and compress tightly the subassembly, compress tightly welding electrode through the work piece and tightly support the work piece behind the subassembly drive, cooperate the insulating tool again, make back welding electrode weld again after compressing tightly the work piece, avoid the work piece to take place the displacement when the welding to improve the welded precision, resistance welding device welding process simple, reduce staff's working strength, easily realize mechanization and automation.
Description
Technical Field
The utility model relates to a welding equipment field especially relates to a resistance welding device for T type welds.
Background
The electric resistance welding has the advantages of simple metallurgical process, uniform chemical components of weld metal, basically consistent with those of base metal, concentrated resistance heat, small heating range, small heat affected zone, small welding deformation, easy control, no need of filling materials and protective gas and relatively low welding cost.
However, when the existing resistance welding device is used for T-shaped welding, workers are required to manually align and place materials so as to ensure the accuracy and reliability of the welding position, time and labor are wasted, and the production efficiency is lower.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a resistance welding device for T type welds to solve the above-mentioned problem that wastes time and energy and production efficiency is lower.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a resistance welding device for T-shaped welding, which comprises a welding host and a plurality of welding units arranged on the welding host, wherein each welding unit comprises an upper welding jig and a T-shaped welding jig;
the upper welding jig is arranged above the T-shaped welding jig;
the T-shaped welding jig comprises a fixing plate, a workpiece pressing assembly, a T-shaped copper table, a fixing copper seat, a lower insulating plate, a rear welding electrode, a lower welding electrode, a side welding electrode and an insulating jig;
the workpiece pressing assembly is arranged at the rear end near end of the fixing plate, the T-shaped copper table is arranged at the driving end of the workpiece pressing assembly, the fixing copper seat is arranged on the front side of the T-shaped copper table, and the rear welding electrode is arranged on the front side of the fixing copper seat; the lower insulating plate is arranged at the near end of the front end of the fixed plate, the side welding electrode is arranged at the rear side of the lower insulating plate, and the lower welding electrode is arranged at the top of the lower insulating plate; the insulating jig is arranged on the lower insulating plate and used for placing a workpiece.
In the resistance welding device for T-shaped welding, the workpiece pressing assembly comprises a pressing cylinder, a fixed seat and a sliding block; the fixed seat is provided with a sliding rail, and the sliding block is connected with the sliding rail in a sliding manner; the pressing air cylinder is arranged on the rear side of the fixing seat, the driving end of the pressing air cylinder is connected with the rear end of the sliding block, and the front end of the sliding block is connected with the T-shaped copper platform.
In the resistance welding device for T-shaped welding, a copper platform dovetail groove is arranged on the front side surface of the T-shaped copper platform, a copper platform lug matched with the copper platform is arranged on the rear side of the fixed copper seat, and the copper platform dovetail groove is connected with the copper seat lug in a sliding manner; the fixed copper seat is provided with a copper seat adjusting nut, and the tail end of the copper seat adjusting nut penetrates through the copper seat bump and tightly abuts against the groove bottom of the copper platform dovetail groove.
In the resistance welding device for T-shaped welding, the insulation jig comprises a front end insulation jig and a workpiece insulation jig, the front end insulation jig is fixed at the front end of the lower insulation plate, and the workpiece insulation jig is fixed at the left side of the lower insulation plate.
In the resistance welding device for T-shaped welding, the T-shaped welding jig further comprises a translation assembly, and the translation assembly comprises a lower fixing frame, a lower screw rod and a lower connecting slide block;
the lower fixing frame is arranged on the welding host, two ends of the lower screw rod respectively penetrate out of the left side and the right side of the lower fixing frame and are rotatably connected with the lower fixing frame, and two ends of the lower screw rod are provided with lower handles; the bottom of the lower connecting slide block is provided with a lower slide block dovetail groove, the top of the lower fixing frame is provided with a lower fixing lug matched with the lower slide block dovetail groove, and the lower fixing lug is in sliding connection with the lower slide block dovetail groove; a lower adjusting nut is arranged in the lower sliding block dovetail groove and is in threaded connection with the lower screw rod; the fixed plate is arranged on the lower connecting slide block.
In the resistance welding device for T-shaped welding, the upper welding jig comprises a jig mounting seat, an upper electrode copper platform, a cylinder seat, a conductive copper strip, an upper insulating plate, an upper welding electrode and a welding multi-power cylinder;
the upper welding electrode is arranged on the bottom surface of the jig mounting seat, and the upper electrode copper platform is arranged on the top surface of the jig mounting seat; one end of the conductive copper strip is connected with the upper electrode copper platform, and the other end of the conductive copper strip is connected with the welding host; the upper insulating plate is arranged on the top surface of the upper electrode copper platform, the upper insulating plate is arranged on the top surface of the upper insulating plate, and the cylinder seat is fixed on the welding host; the welding power doubling cylinder is fixed on the cylinder seat, and the output end of the welding power doubling cylinder penetrates through the cylinder seat to be connected with the upper insulating plate.
In the resistance welding device for T-shaped welding, the upper welding jig also comprises an upper welding jig adjusting piece, and the upper welding jig adjusting piece comprises an upper fixing frame, an upper screw rod and an upper connecting slide block; the upper fixing frame is fixed on the welding host; two ends of the upper screw rod respectively penetrate out of the left side and the right side of the upper fixing frame and are rotatably connected with the upper fixing frame, and two ends of the upper screw rod are provided with upper handles; the bottom of the upper connecting slide block is provided with an upper slide block dovetail groove, the top of the upper fixing frame is provided with an upper fixing lug matched with the upper slide block dovetail groove, the rear side of the upper connecting slide block is provided with an upper adjusting nut, the upper adjusting nut is in threaded connection with the upper screw rod, and the front side of the upper connecting slide block is connected with the air cylinder seat.
The utility model provides a technical scheme can have following beneficial effect:
resistance welding set be equipped with the work piece and compress tightly the subassembly, compress tightly the subassembly through the work piece and tightly support the work piece, deuterogamy and go up insulating tool, make back welding electrode weld again after compressing tightly the work piece, avoid the work piece to take place the displacement when the welding to improve welded precision, resistance welding set welding process simple, reduce staff's working strength, easily realize mechanization and automation.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic structural diagram of a T-shaped welding jig according to one embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an upper welding jig according to an embodiment of the present invention;
in the drawings: the welding device comprises a welding host 1, an upper welding jig 2 and a T-shaped welding jig 3;
the device comprises a jig mounting base 21, an upper electrode copper platform 22, a cylinder seat 23, a conductive copper strip 24, an upper insulating plate 25, an upper welding electrode 26 and a welding doubling cylinder 27; the device comprises a fixed plate 31, a workpiece pressing assembly 32, a T-shaped copper table 33, a fixed copper seat 34, a lower insulating plate 35, a rear welding electrode 36, a lower welding electrode 37, a side welding electrode 38 and an insulating jig 39;
the fixing frame 291, the upper screw 292, the upper connecting slide 293, the upper handle 294, the upper fixing lug 295 and the upper adjusting nut 296; the lower fixing frame 301, the lower screw 302, the lower connecting slide block 303, the lower handle 304, the lower fixing lug 305 and the lower adjusting nut 306; the pressing cylinder 321, the fixed seat 322, the sliding block 323 and the sliding rail 3221; copper seat projection 341, copper seat adjusting nut 342; a front end insulation jig 391 and a workpiece insulation jig 392.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 4, the present invention provides a resistance welding device for T-shaped welding, which includes a welding host 1 and a plurality of welding units disposed on the welding host 1, wherein the welding units include an upper welding jig 2 and a T-shaped welding jig 3;
the upper welding jig 2 is arranged above the T-shaped welding jig 3;
the T-shaped welding jig 3 comprises a fixing plate 31, a workpiece pressing assembly 32, a T-shaped copper table 33, a fixing copper seat 34, a lower insulating plate 35, a rear welding electrode 36, a lower welding electrode 37, a side welding electrode 38 and an insulating jig 39;
the workpiece pressing component 32 is arranged at the rear end near end of the fixing plate 31, the T-shaped copper table 33 is arranged at the driving end of the workpiece pressing component 32, the fixing copper seat 34 is arranged at the front side of the T-shaped copper table 33, and the rear welding electrode 36 is arranged at the front side of the fixing copper seat 34; the lower insulating plate 35 is disposed at the front end proximal end of the fixed plate 31, the side welding electrode 38 is disposed at the rear side of the lower insulating plate 35, and the lower welding electrode 37 is disposed at the top of the lower insulating plate 35; the insulation jig 39 is arranged on the lower insulation plate 35 and used for placing a workpiece.
Resistance welding set be equipped with the work piece and compress tightly subassembly 32, compress tightly subassembly 32 through the work piece and tightly support the work piece, deuterogamy and go up insulating tool 39, make back welding electrode 36 weld after compressing tightly the work piece again, avoid the work piece to take place the displacement when the welding to improve welded precision, resistance welding set welding process simple, reduce staff's working strength, easily realize mechanization and automation.
The welding principle of the resistance welding device can refer to the existing resistance welding device, T-shaped welding is carried out through the rear welding electrode 36, the lower welding electrode 37 and the side welding electrode 38 in the upper welding jig 2 and the T-shaped welding jig 3, the heating time is short, the heat is concentrated, the heat affected zone is small, the deformation and the stress are small, and correction is not needed to be arranged after welding.
The insulation jig 39 is arranged on the lower insulation plate 35 and used for placing workpieces, and the condition that current is shunted when welding can be effectively eliminated, so that electric energy is effectively saved, and energy waste is avoided.
Specifically, the workpiece pressing assembly 32 comprises a pressing cylinder 321, a fixed seat 322 and a sliding block 323; the fixed seat 322 is provided with a sliding rail 3221, and the sliding block 323 is slidably connected with the sliding rail 3221; the pressing cylinder 321 is arranged on the rear side of the fixing seat 322, the driving end of the pressing cylinder 321 is connected with the rear end of the sliding block 323, and the front end of the sliding block 323 is connected with the T-shaped copper table 33.
By adopting the structure, the pressing cylinder 321 drives the sliding block 323, so that the insulating fixture 39 slides on the sliding rail 3221, the purpose that the sliding block 323 drives the T-shaped copper table 33, the fixed copper seat 34 and the rear welding electrode 36 to move along the front-back direction is achieved, and the rear welding electrode 36 can be matched with the insulating fixture 39 to press a workpiece.
Specifically, a copper table dovetail groove is arranged on the front side surface of the T-shaped copper table 33, a copper table bump 341 adapted to the copper table is arranged on the rear side of the fixed copper base 34, and the copper table dovetail groove is connected with the copper table bump 341 in a sliding manner; the fixed copper seat 34 is provided with a copper seat adjusting nut 342, and the tail end of the copper seat adjusting nut 342 passes through the copper seat bump 341 and tightly abuts against the groove bottom of the copper platform dovetail groove.
By adopting the structure, the relative position of the T-shaped copper platform 33 and the fixed copper seat 34 can be changed, so that the heights of the fixed copper seat 34 and the rear welding electrode 36 can be adjusted to adapt to workpieces with different sizes, and the adaptability of the resistance welding device is enhanced.
When the height of the welding electrode 36 needs to be adjusted, the copper seat adjusting nut 342 is unscrewed, so that the fixed copper seat 34 can longitudinally slide relative to the T-shaped copper table 33, and when the height is adjusted to be proper, the copper seat adjusting nut 342 is screwed, so that the tail end of the copper seat adjusting nut 342 is tightly abutted against the groove bottom of a dovetail groove of the copper table, thereby fixing the relative position of the fixed copper seat 34 and the T-shaped copper table 33 and avoiding the sliding of the fixed copper seat 34.
Specifically, the insulation jig 39 includes a front end insulation jig 391 and a workpiece insulation jig 392, the front end insulation jig 391 is fixed to the front end of the lower insulation plate 35, and the workpiece insulation jig 392 is fixed to the left side of the lower insulation plate 35.
Before welding, a workpiece needs to be placed at a corresponding position of the front end insulating jig 391 and the workpiece insulating jig 392, so that a positioning effect is achieved. The front-end insulating jig 391 and the workpiece insulating jig 392 are both insulating, so that the condition of current shunting during welding can be effectively eliminated, electric energy is effectively saved, and energy waste is avoided.
Specifically, the T-shaped welding jig 3 further comprises a translation assembly, wherein the translation assembly comprises a lower fixing frame 301, a lower screw 302 and a lower connecting sliding block 303;
the lower fixing frame 301 is arranged on the welding host 1, two ends of the lower screw 302 respectively penetrate out of the left side and the right side of the lower fixing frame 301 and are rotatably connected with the lower fixing frame 301, and two ends of the lower screw 302 are provided with lower handles 304; a lower slider dovetail groove is formed in the bottom of the lower connecting slider 303, a lower fixing bump 305 matched with the lower slider dovetail groove is formed in the top of the lower fixing frame 301, and the lower fixing bump 305 is in sliding connection with the lower slider dovetail groove; a lower adjusting nut 306 is arranged in the lower sliding block dovetail groove, and the lower adjusting nut 306 is in threaded connection with the lower screw 302; the fixing plate 31 is disposed on the lower connection slider 303.
By adopting the structure, the lower screw 302 is rotated to drive the lower connecting slide block 303 to displace, so that the whole horizontal position of the T-shaped welding jig 3 is changed, the T-shaped welding jig 3 can horizontally move, the resistance welding device is adaptive to workpieces with different sizes, and the adaptability of the resistance welding device is enhanced.
Further, the upper welding jig 2 comprises a jig mounting seat 21, an upper electrode copper platform 22, a cylinder seat 23, a conductive copper strip 24, an upper insulating plate 25, an upper welding electrode 26 and a welding doubling cylinder 27;
the upper welding electrode 26 is arranged on the bottom surface of the jig mounting seat 21, and the upper electrode copper platform 22 is arranged on the top surface of the jig mounting seat 21; one end of the conductive copper strip 24 is connected with the upper electrode copper platform 22, and the other end of the conductive copper strip 24 is connected with the welding host 1; the upper insulating plate 25 is arranged on the top surface of the upper electrode copper platform 22, the upper insulating plate 25 is arranged on the top surface of the upper insulating plate 25, and the cylinder seat 23 is fixed on the welding host machine 1; the welding power doubling cylinder 27 is fixed on the cylinder block 23, and the output end of the welding power doubling cylinder 27 penetrates through the cylinder block 23 and is connected with the upper insulating plate 25.
The conductive copper strip 24 is conductive for the upper welding electrode 26 and the upper electrode copper platform 22, and the welding doubling cylinder 27 is used for driving the upper welding electrode 26 to move in the vertical direction. During welding, the upper welding electrode 26 is driven to move downwards by the upper insulating plate 25, the upper electrode copper table 22 and the jig mounting seat 21. After welding is completed, the welding force multiplying cylinder 27 drives the structure to reset. The cylinder block 23 serves as a fixing. In an embodiment of the present invention, the jig mounting seat 21, the upper electrode copper table 22 and the upper insulating plate 25 are connected by bolts, and an insulating pad is disposed between the nut and the upper insulating plate 25.
Furthermore, the upper welding jig 2 further comprises an upper welding jig adjusting part, and the upper welding jig adjusting part comprises an upper fixing frame 291, an upper screw 292 and an upper connecting slide block 293; the upper fixing frame 291 is fixed on the welding host 1; two ends of the upper screw 292 respectively penetrate out of the left side and the right side of the upper fixing frame 291 and are rotatably connected with the upper fixing frame 291, and two ends of the upper screw 292 are provided with upper handles 294; an upper sliding block dovetail groove is formed in the bottom of the upper connecting sliding block 293, an upper fixing bump 295 matched with the upper sliding block dovetail groove is formed in the top of the upper fixing frame 291, an upper adjusting nut 296 is arranged on the rear side of the upper connecting sliding block 293, the upper adjusting nut 296 is in threaded connection with the upper screw 292, and the front side of the upper connecting sliding block 293 is connected with the air cylinder seat 23.
The cylinder seat 23 is connected with the welding main machine 1 through the upper connecting slide block 293, and by adopting the structure, the horizontal positions of the upper welding electrode 26 and the workpiece can be adjusted by changing the relative positions of the upper fixing frame 291 and the cylinder seat 23, so that the welding device can adapt to workpieces with different sizes, and the adaptability of the resistance welding device is enhanced.
When the horizontal position of the upper welding electrode 26 needs to be adjusted, the upper handle 294 is rotated to drive the upper screw 292 to rotate, so that the upper connecting slide 293 can slide transversely relative to the upper fixing frame 291.
The technical principle of the present invention has been described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and is not to be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will realize other embodiments of the present invention without inventive efforts, and such equivalent modifications or substitutions are included within the scope of the present invention as defined in the appended claims.
Claims (7)
1. A resistance welding device for T-shaped welding is characterized by comprising a welding host and a plurality of welding units arranged on the welding host, wherein each welding unit comprises an upper welding jig and a T-shaped welding jig;
the upper welding jig is arranged above the T-shaped welding jig;
the T-shaped welding jig comprises a fixing plate, a workpiece pressing assembly, a T-shaped copper table, a fixing copper seat, a lower insulating plate, a rear welding electrode, a lower welding electrode, a side welding electrode and an insulating jig;
the workpiece pressing assembly is arranged at the near end of the rear end of the fixing plate, the T-shaped copper table is arranged at the driving end of the workpiece pressing assembly, the fixing copper seat is arranged on the front side of the T-shaped copper table, and the rear welding electrode is arranged on the front side of the fixing copper seat; the lower insulating plate is arranged at the near end of the front end of the fixed plate, the side welding electrode is arranged at the rear side of the lower insulating plate, and the lower welding electrode is arranged at the top of the lower insulating plate; the insulating jig is arranged on the lower insulating plate and used for placing a workpiece.
2. The resistance welding device for T-shaped welding according to claim 1, characterized in that the workpiece pressing component comprises a pressing cylinder, a fixed seat and a sliding block; the fixed seat is provided with a sliding rail, and the sliding block is connected with the sliding rail in a sliding manner; the pressing air cylinder is arranged on the rear side of the fixing seat, the driving end of the pressing air cylinder is connected with the rear end of the sliding block, and the front end of the sliding block is connected with the T-shaped copper platform.
3. A resistance welding device for T-shaped welding according to claim 1, characterized in that a copper platform dovetail groove is arranged on the front side surface of the T-shaped copper platform, a copper platform lug matched with the copper platform is arranged on the rear side of the fixed copper platform, and the copper platform dovetail groove is connected with the copper platform lug in a sliding manner; the fixed copper seat is provided with a copper seat adjusting nut, and the tail end of the copper seat adjusting nut penetrates through the copper seat bump and tightly abuts against the groove bottom of the copper platform dovetail groove.
4. The resistance welding device according to claim 1, wherein the insulation jig comprises a front end insulation jig fixed to the front end of the lower insulating plate and a work insulation jig fixed to the left side of the lower insulating plate.
5. The resistance welding device for T-shaped welding according to claim 1, characterized in that the T-shaped welding jig further comprises a translation assembly, the translation assembly comprises a lower fixing frame, a lower screw rod and a lower connecting slide block;
the lower fixing frame is arranged on the welding host, two ends of the lower screw rod respectively penetrate out of the left side and the right side of the lower fixing frame and are rotatably connected with the lower fixing frame, and two ends of the lower screw rod are provided with lower handles; the bottom of the lower connecting slide block is provided with a lower slide block dovetail groove, the top of the lower fixing frame is provided with a lower fixing lug matched with the lower slide block dovetail groove, and the lower fixing lug is in sliding connection with the lower slide block dovetail groove; a lower adjusting nut is arranged in the lower sliding block dovetail groove and is in threaded connection with the lower screw rod; the fixed plate is arranged on the lower connecting slide block.
6. The resistance welding device for T-shaped welding according to claim 1, characterized in that the upper welding jig comprises a jig mounting seat, an upper electrode copper table, a cylinder seat, a conductive copper strip, an upper insulating plate, an upper welding electrode and a welding multi-force cylinder;
the upper welding electrode is arranged on the bottom surface of the jig mounting seat, and the upper electrode copper platform is arranged on the top surface of the jig mounting seat; one end of the conductive copper strip is connected with the upper electrode copper platform, and the other end of the conductive copper strip is connected with the welding host; the upper insulating plate is arranged on the top surface of the upper electrode copper platform, the upper insulating plate is arranged on the top surface of the upper insulating plate, and the cylinder seat is fixed on the welding host; the welding power doubling cylinder is fixed on the cylinder seat, and the output end of the welding power doubling cylinder penetrates through the cylinder seat to be connected with the upper insulating plate.
7. The resistance welding device for T-shaped welding according to claim 6, wherein the upper welding jig further comprises an upper welding jig adjusting piece, and the upper welding jig adjusting piece comprises an upper fixing frame, an upper screw rod and an upper connecting slide block; the upper fixing frame is fixed on the welding host; two ends of the upper screw rod respectively penetrate out of the left side and the right side of the upper fixing frame and are rotatably connected with the upper fixing frame, and two ends of the upper screw rod are provided with upper handles; the bottom of the upper connecting slide block is provided with an upper slide block dovetail groove, the top of the upper fixing frame is provided with an upper fixing lug matched with the upper slide block dovetail groove, the rear side of the upper connecting slide block is provided with an upper adjusting nut, the upper adjusting nut is in threaded connection with the upper screw rod, and the front side of the upper connecting slide block is connected with the cylinder block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221521757.1U CN217618339U (en) | 2022-06-17 | 2022-06-17 | Resistance welding device for T-shaped welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221521757.1U CN217618339U (en) | 2022-06-17 | 2022-06-17 | Resistance welding device for T-shaped welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217618339U true CN217618339U (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221521757.1U Active CN217618339U (en) | 2022-06-17 | 2022-06-17 | Resistance welding device for T-shaped welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217618339U (en) |
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2022
- 2022-06-17 CN CN202221521757.1U patent/CN217618339U/en active Active
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