CN114055067A - Movable inner support welding device suitable for aluminum coil - Google Patents
Movable inner support welding device suitable for aluminum coil Download PDFInfo
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- CN114055067A CN114055067A CN202010744852.7A CN202010744852A CN114055067A CN 114055067 A CN114055067 A CN 114055067A CN 202010744852 A CN202010744852 A CN 202010744852A CN 114055067 A CN114055067 A CN 114055067A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0252—Steering means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
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Abstract
The invention provides a movable inner support welding device suitable for an aluminum coil, which comprises a robot connecting device (100), a welding gun device (110), a guiding device (120) and a strutting device (130); the robot connecting device (100) is connected with the welding gun device (110) and the guide device (120), and the distraction device (130) is sleeved on the guide device (120); the distractor (130) has two states, open and closed. The aluminum coil expanding device is simple and reasonable in structure, the expanding device is guided by the guide device, and the expanding device can expand an aluminum coil from the inside, so that the welding of a welding gun device is facilitated.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a movable inner support welding device suitable for an aluminum coil.
Background
The aluminum coil needs to be subjected to aging treatment after heat treatment, the aging treatment needs to weld the head and the tail of the aluminum coil, and if necessary, other positions need to be added for welding so as to fix the shape of the aluminum coil.
The head of the inner ring of the aluminum coil is generally called a coil head, and the head of the outer ring is called a coil tail. The aluminum coil is theoretically a circular cylinder, and the side surface of the aluminum coil is circular. In order to ensure that the shape of the aluminum coil can be effectively fixed, the simple welding of the coil head and the coil tail is not enough, and other welding points are added generally, wherein the other welding points are positioned at the intersection points of a straight line passing through the coil head and/or the coil tail and the circle center and the inner ring and the outer ring.
Patent document CN105904126A discloses a robot welding system and welding method based on visual positioning, wherein the welding system includes: the central control module can process data and issue instructions; the image acquisition module is connected with the central control module, transmits acquired image information to the central control module for data analysis, and receives and executes instructions of the central control module; and the welding module is connected with the central control module and receives and executes the instruction of the central control module. When the welding system is applied to welding of aluminum coils, welding spots can be accurately positioned and welded, but the welding of the aluminum coil does not have a good solution to automatically open the aluminum coil and weld the welding spots one by one.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a movable inner support welding device suitable for an aluminum coil.
The invention provides a movable inner support welding device suitable for an aluminum coil, which comprises a robot connecting device, a welding gun device, a guiding device and a support device, wherein the robot connecting device is connected with the welding gun device;
the robot connecting device is connected with the welding gun device and the guiding device, and the opening device is sleeved on the guiding device; the distractor has two states, open and tightened.
Preferably, the robot connecting device comprises a robot connecting plate, a quick-change main disc and a quick-change auxiliary disc;
the quick change master is connected to the robot connecting plate, and the quick change master is connected the quick change auxiliary, and guider is connected to the quick change auxiliary, is provided with the welder device on the robot connecting plate, and external robot can be connected to the robot connecting plate.
Preferably, the welding gun device and the guiding device are located on the same side of the robot connecting plate.
Preferably, the guide device comprises a connecting sleeve, a guide rod, a top sleeve and a top cap;
the connecting sleeve is connected with one end of the guide rod, the other end of the guide rod is connected with the jacking sleeve, the jacking sleeve is connected with the jacking cap, and the connecting sleeve is connected with a quick-change auxiliary disc of the robot connecting device.
Preferably, the top cap is conical.
Preferably, the strutting device comprises a cylinder and a strutting assembly, and the strutting assembly is one or more groups;
the opening assembly comprises a fixing assembly, a sliding assembly and a supporting rod assembly, the fixing assembly is sleeved and fixed on the guide rod of the guide device, the sliding assembly is sleeved on the guide rod of the guide device and can slide along the axial direction of the guide rod of the guide device, and the supporting rod assembly is uniformly arranged on the circumferential direction of the fixing assembly and the sliding assembly;
the support rod assembly comprises a connecting rod and a support rod, one end of the connecting rod is rotatably connected with the sliding assembly, the other end of the connecting rod is rotatably connected with the middle part of the support rod, one end of the support rod is rotatably connected with the fixing assembly, and the other end of the support rod is an opening end;
the body of cylinder connects sliding assembly, and the piston rod of cylinder connects fixed subassembly, and perhaps the body of cylinder connects fixed subassembly, and sliding assembly is connected to the piston rod of cylinder.
Preferably, the number of the cylinders is one or more;
when the number of the air cylinders is one, the air cylinders are connected with one expanding component, and the expanding components are connected through a synchronizing rod;
when the cylinder is a plurality of, the cylinder is connected with the subassembly that struts one-to-one, perhaps the quantity of cylinder is less than the quantity of strutting the subassembly, and the part is strutted the subassembly and is connected with the cylinder, and the subassembly that struts that is not connected with the cylinder is connected to the subassembly that struts that is connected with the cylinder through the synchronizing rod.
Preferably, the synchronization rod is connected between the sliding assemblies of two adjacent spreading assemblies.
Preferably, the sliding assembly comprises a first sliding sleeve, a sliding ring and a second sliding sleeve, and the first sliding sleeve and the second sliding sleeve are respectively and coaxially connected to two ends of the sliding ring;
the fixing component comprises a fixing ring, and the fixing ring is tightly connected with a guide rod of the guide device.
Preferably, the distraction assembly further comprises a guide wheel disposed at the distraction end of the support rod.
Compared with the prior art, the invention has the following beneficial effects:
1. the aluminum coil expanding device is simple and reasonable in structure, the expanding device is guided by the guide device, and the expanding device can expand an aluminum coil from the inside, so that the welding of a welding gun device is facilitated.
2. According to the aluminum coil expanding device, the welding gun device is arranged on the robot connecting plate, the robot connecting plate is connected with the quick-change main disc, the expanding device is connected to the quick-change auxiliary disc through the guide device, the connecting and disconnecting speed of the quick-change main disc and the quick-change auxiliary disc is high, and when the expanding device expands an aluminum coil, the quick-change auxiliary disc and the quick-change main disc are disconnected, so that the welding gun device is separated from the expanding device and is welded in the expanded aluminum coil.
3. The invention adopts the synchronous rod to connect the spreading components, and transmits the motion through the synchronous rod, thereby saving the number of the cylinders, saving the cost and simultaneously leading the structure of the whole device to be simpler and more compact.
4. The guide wheel is arranged at the opening end of the supporting rod, so that the opening device can slide in the aluminum coil, and the aluminum coil is conveniently opened.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic perspective view of an angle according to the present invention.
Fig. 2 is a schematic perspective view of another embodiment of the present invention.
Fig. 3 is a schematic cross-sectional structure of the present invention.
Fig. 4 is a schematic front view of the present invention.
FIG. 5 is a schematic side view of the present invention.
Fig. 6 is a schematic top view of the present invention.
The figures show that:
Torch assembly 110 guide rod 122 support rod 135
Spreader 130 top cap 124 synchronization bar 137
Second sliding sleeve 133 of quick-change auxiliary plate 103
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The mobile inner support welding device suitable for the aluminum coil comprises a robot connecting device 100, a welding gun device 110, a guiding device 120 and a strutting device 130, wherein the robot connecting device 100 is connected with the welding gun device 110; the robot connecting device 100 is connected with a welding gun device 110 and a guide device 120, and a distraction device 130 is sleeved on the guide device 120; the distractor 130 has two states, open and closed. When in the tightened state, the distractor 130 fits against the guide 120 with almost no included angle, and when in the open state, the distractor 130 forms an included angle with the guide 120.
The robot connecting device 100 comprises a robot connecting plate 101, a quick-change main disc 102 and a quick-change auxiliary disc 103; the robot connecting plate 101 is connected with a quick-change main disc 102, the quick-change main disc 102 is connected with a quick-change auxiliary disc 103, the quick-change auxiliary disc 103 is connected with a guide device 120, a welding gun device 110 is arranged on the robot connecting plate 101, and the robot connecting plate 101 can be connected with an external robot. The welding gun device 110 and the guiding device 120 are located on the same side of the robot connecting plate 101, and control of an external robot is facilitated.
Preferably, the quick-change main disc 102 and the quick-change auxiliary disc 103 are robot quick-change discs, wherein the quick-change main disc 102 is a main-side quick-change disc, the quick-change auxiliary disc 103 is a tool-side quick-change disc, and the quick-change main disc 102 and the quick-change auxiliary disc 103 are connected and disconnected through connection and disconnection or connection and disconnection. The distracting device 130 and the welding gun device 110 are respectively connected with the quick-change auxiliary disc 103 and the quick-change main disc 102, and the connection and the disconnection of the distracting device 130 and the welding gun device 110 are realized through the connection and the disconnection of the quick-change auxiliary disc 103 and the quick-change main disc 102. After the aluminum coil is spread by the spreading device 130, the quick-change main disc 102 and the quick-change auxiliary disc 103 are disconnected, so that the welding gun device 110 is separated from the spreading device 130 and the interior of the spread aluminum coil is welded.
The guide device 120 comprises a connecting sleeve 121, a guide rod 122, a top sleeve 123 and a top cap 124; the connecting sleeve 121 is connected with one end of the guide rod 122, the other end of the guide rod 122 is connected with the ejecting sleeve 123, the ejecting sleeve 123 is connected with the ejecting cap 124, and the connecting sleeve 121 is connected with the quick-change auxiliary disc 103 of the robot connecting device 100. The top cap 124 is conical. The guide 120 enables the distractor 130 to open or tighten in a certain direction. The conical top cap 124 facilitates access of the guide 120 from the outside of the aluminum coil to the inside of the aluminum coil.
The expanding device 130 comprises a cylinder 140 and expanding components, wherein the expanding components are one group or multiple groups; the opening assembly comprises a fixing assembly, a sliding assembly and a supporting rod assembly, the fixing assembly is sleeved and fixed on the guide rod 122 of the guide device 120, the sliding assembly is sleeved on the guide rod 122 of the guide device 120 and can slide along the axial direction of the guide rod 122 of the guide device 120, and the supporting rod assembly is uniformly arranged on the circumferential direction of the fixing assembly and the circumferential direction of the sliding assembly; the supporting rod assembly comprises a connecting rod 134 and a supporting rod 135, one end of the connecting rod 134 is rotatably connected with the sliding assembly, the other end of the connecting rod 134 is rotatably connected with the middle part of the supporting rod 135, one end of the supporting rod 135 is rotatably connected with the fixing assembly, and the other end of the supporting rod 135 is a supporting end; the body of the cylinder 140 is connected with the sliding assembly, and the piston rod of the cylinder 140 is connected with the fixing assembly, or the body of the cylinder 140 is connected with the fixing assembly, and the piston rod of the cylinder 140 is connected with the sliding assembly. The number of the cylinders 140 is one or more; when one cylinder 140 is provided, the cylinder 140 is connected with one spreading assembly, and the spreading assemblies are connected through a synchronizing rod 137; when the number of the air cylinders 140 is multiple, the air cylinders 140 are correspondingly connected with the expanding assemblies one by one, or the number of the air cylinders 140 is less than that of the expanding assemblies, part of the expanding assemblies are connected with the air cylinders 140, and the expanding assemblies which are not connected with the air cylinders 140 are connected to the expanding assemblies connected with the air cylinders 140 through the synchronizing rods 137. The synchronizing bar 137 is connected between the sliding assemblies of two adjacent spreader assemblies. The sliding assembly comprises a first sliding sleeve 131, a sliding ring 132 and a second sliding sleeve 133, wherein the first sliding sleeve 131 and the second sliding sleeve 133 are respectively and coaxially connected to two ends of the sliding ring 132; the fixing assembly includes a fixing ring 136, and the fixing ring 136 is fastened to the guide rod 122 of the guide device 120. The expanding component further comprises a guide wheel 141, and the guide wheel 141 is arranged at the expanding end of the support rod 135, so that the expanding device 130 can conveniently slide in the aluminum coil.
Two ends (a body and a piston rod) of the cylinder 140 are respectively connected to the fixed component and the sliding component, so that the opening and the tightening of the stay bar component can be realized. Two adjacent distraction assemblies are connected through the synchronizing rod 137, and as long as one of the distraction assemblies is connected with the air cylinder 140, the transmission of motion can be realized, so that the distraction assemblies are opened or tightened simultaneously. Such an arrangement saves the amount of the cylinder 140, thereby saving cost and further simplifying the structure.
While the present application has been described with reference to the foregoing general description, the present application will be described in more detail with reference to preferred embodiments and/or variations thereof.
Example (b):
a movable inner support welding device suitable for aluminum coils comprises a robot connecting device 100, a welding gun device 110, a guide device 120 and a strutting device 130. The robot connecting device 100 is connected with the welding gun device 110 through a robot connecting plate 101, the robot connecting device 100 is connected with the guiding device 120 through a quick-change auxiliary disc 103, and the opening device 130 is sleeved on the guiding device 120 through a first sliding sleeve 131 and a sliding ring 132.
Wherein further, the robot connecting device 100 comprises a robot connecting plate 101, a quick-change main disc 102 and a quick-change auxiliary disc 103. Specifically, the robot connecting plate 101 is connected with the quick-change main disc 102 through a bolt, and the quick-change main disc 102 is connected with the quick-change auxiliary disc 103 in an on-off manner. The robot connecting device 100 is connected to the robot body during operation.
Further, the guiding device 120 includes a connecting sleeve 121, a guiding rod 122, a top sleeve 123, and a top cap 124. Specifically, the connection sleeve 121 is connected with the guide rod 122 through a bolt, the top sleeve 123 on the top of the guide rod 122 is connected with the guide rod, and the top cap 124 is connected with the guide rod 122 through a bolt.
Further, the spreading device 130 includes 2 first sliding sleeves 131, 2 sliding sleeves 132, 2 second sliding sleeves 133, 6 connecting rods 134,6 supporting rods 135, 2 fixing rings 136, 3 synchronizing rods 137, 1 cylinder 140, and 6 guide wheels 141. Specifically, including two sets of subassemblies that strut, a set of subassembly that struts includes 1 first sliding sleeve 131, 1 sliding ring 132, 1 second sliding sleeve 133, 3 connecting rods 136, 3 bracing piece 135 and 1 solid fixed ring, first sliding sleeve 131 is connected with second sliding sleeve 133 and sliding ring 132, thereby can slide on guide bar 122, sliding ring 132 passes through the round pin hub connection with 3 connecting rods 134, can realize rotating, 3 connecting rods 134 passes through the round pin hub connection with 3 bracing piece 135, can realize rotating, guide pulley 141 is equipped with at the bracing piece 135 end, thereby can roll in the aluminium book. Two sets of subassemblies that strut are connected through 3 synchronizing bars 137 between, and 3 synchronizing bars 137 are connected in the week of two sets of subassembly sliding rings 132 that strut, and cylinder 140 is connected to one of them group's subassembly that struts, sliding ring 132 and this body coupling of cylinder 140, and solid fixed ring 136 is connected with the piston rod of cylinder 140. More specifically, when the air cylinder 140 discharges air, the slip ring 132 of one set of the spreading assemblies and the body of the air cylinder 140 slide downward on the guide rod 122, the slip ring 132 of one set of the spreading assemblies drives the slip ring 132 of the other set of the spreading assemblies to slide simultaneously through the synchronization rod 137, at this time, 6 support rods 135 are opened, and the inner coil of the aluminum coil is spread; when the air cylinder 140 admits air, the slip ring 132 of one set of the strutting assemblies and the air cylinder 140 body slide upwards on the guide rod 122, the slip ring 132 of one set of the strutting assemblies drives the slip ring 132 of the other strutting assembly to slide simultaneously through the synchronous rod 137, and at the moment, the 6 support rods 135 contract to release the inner coil of the aluminum coil.
In the non-ferrous metal industry, the problem that the aluminum coil inner roll is scattered cannot be solved by an advanced technology, automatic welding of the aluminum coil inner roll cannot be realized, and the method for expanding the aluminum coil inner roll is solved. The welding gun device 110 is assisted by the strutting device 130 to weld, the strutting assembly stretches and compresses the inner-layer aluminum coil around under the action of the cylinder 140 to ensure that no gap exists between the inner-layer aluminum coils, then the welding gun device 110 fixed on the arm of the robot performs spot welding at the fixed position of the inner layer of the aluminum coil, and after the welding of the inner layer of the aluminum coil is finished, the strutting assembly tightens under the action of the cylinder 140 and simultaneously withdraws from the core of the aluminum coil. The connecting rod 134 is controlled by the cylinder 140 to drive the supporting rod 135 to prop up or loosen the inner coil of the aluminum coil, so that the welding gun device 110 can weld three points on two sides of the aluminum coil conveniently. Specifically, the welding gun device 110 is connected to the robot connection device 100, when the robot connection device 100, the guide device 120 and the spreader 130 complete the opening operation of the inner aluminum coil, the quick-change main disc 102 is disconnected from the quick-change auxiliary disc 103, and the external robot drives the robot connection device 100 and the welding gun device 110 to perform a welding process on the inner aluminum coil. After the welding is finished, the quick-change main disc 102 is connected with the quick-change auxiliary disc 103, the air cylinder 140 is used for air inlet, the expanding device 130 is loosened, and the whole process is finished.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A movable inner support welding device suitable for aluminum coils is characterized by comprising a robot connecting device (100), a welding gun device (110), a guiding device (120) and a strutting device (130);
the robot connecting device (100) is connected with the welding gun device (110) and the guide device (120), and the distraction device (130) is sleeved on the guide device (120); the distractor (130) has two states, open and closed.
2. The mobile inner support welding device suitable for aluminum coils as claimed in claim 1, wherein the robot connecting device (100) comprises a robot connecting plate (101), a quick-change main disc (102) and a quick-change auxiliary disc (103);
the robot connecting plate (101) is connected with a quick-change master disc (102), the quick-change master disc (102) is connected with a quick-change auxiliary disc (103), the quick-change auxiliary disc (103) is connected with a guide device (120), a welding gun device (110) is arranged on the robot connecting plate (101), and the robot connecting plate (101) can be connected with an external robot.
3. The mobile inner support welding device for aluminum coils as claimed in claim 2, wherein the welding gun device (110) and the guiding device (120) are located on the same side of the robot connecting plate (101).
4. The mobile inner support welding device suitable for aluminum coils as claimed in claim 1, wherein the guiding device (120) comprises a connecting sleeve (121), a guiding rod (122), a top sleeve (123) and a top cap (124);
the connecting sleeve (121) is connected with one end of the guide rod (122), the other end of the guide rod (122) is connected with the ejection sleeve (123), the ejection sleeve (123) is connected with the ejection cap (124), and the connecting sleeve (121) is connected with the quick-change auxiliary disc (103) of the robot connecting device (100).
5. The mobile inner support welding device for aluminum coils as recited in claim 4, characterized in that the top cap (124) is conical.
6. The mobile inner support welding device suitable for the aluminum coil is characterized in that the expanding device (130) comprises a cylinder (140) and expanding components, and the expanding components are one or more groups;
the opening assembly comprises a fixing assembly, a sliding assembly and a supporting rod assembly, the fixing assembly is sleeved and fixed on a guide rod (122) of the guide device (120), the sliding assembly is sleeved on the guide rod (122) of the guide device (120) and can slide along the axial direction of the guide rod (122) of the guide device (120), and the supporting rod assembly is uniformly arranged on the circumferential direction of the fixing assembly and the sliding assembly;
the supporting rod assembly comprises a connecting rod (134) and a supporting rod (135), one end of the connecting rod (134) is rotatably connected with the sliding assembly, the other end of the connecting rod (134) is rotatably connected with the middle part of the supporting rod (135), one end of the supporting rod (135) is rotatably connected with the fixing assembly, and the other end of the supporting rod (135) is a supporting end;
the body of the air cylinder (140) is connected with the sliding assembly, the piston rod of the air cylinder (140) is connected with the fixing assembly, or the body of the air cylinder (140) is connected with the fixing assembly, and the piston rod of the air cylinder (140) is connected with the sliding assembly.
7. The mobile inner support welding device for aluminum coils as claimed in claim 6, characterized in that the number of the air cylinders (140) is one or more;
when the number of the air cylinders (140) is one, the air cylinders (140) are connected with one expanding component, and the expanding components are connected through a synchronizing rod (137);
when the number of the air cylinders (140) is multiple, the air cylinders (140) are connected with the distraction assemblies in a one-to-one correspondence mode, or the number of the air cylinders (140) is less than that of the distraction assemblies, part of the distraction assemblies are connected with the air cylinders (140), and the distraction assemblies which are not connected with the air cylinders (140) are connected to the distraction assemblies which are connected with the air cylinders (140) through the synchronizing rods (137).
8. The mobile inner bracing welding device for aluminum coils according to claim 7, wherein the synchronizing bar (137) is connected between the sliding assemblies of two adjacent bracing assemblies.
9. The mobile inner bracing welding device for aluminum coils according to claim 6, wherein the sliding assembly comprises a first sliding sleeve (131), a sliding ring (132) and a second sliding sleeve (133), the first sliding sleeve (131) and the second sliding sleeve (133) are respectively and coaxially connected to two ends of the sliding ring (132);
the fixing assembly comprises a fixing ring (136), and the fixing ring (136) is tightly connected with a guide rod (122) of the guide device (120).
10. The mobile inner bracing welding device for aluminum coils according to claim 6, wherein the bracing assembly further comprises a guide wheel (141), the guide wheel (141) being disposed at the bracing end of the bracing rod (135).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010744852.7A CN114055067A (en) | 2020-07-29 | 2020-07-29 | Movable inner support welding device suitable for aluminum coil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010744852.7A CN114055067A (en) | 2020-07-29 | 2020-07-29 | Movable inner support welding device suitable for aluminum coil |
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