CN217529538U - Series welding machine - Google Patents
Series welding machine Download PDFInfo
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- CN217529538U CN217529538U CN202220911744.9U CN202220911744U CN217529538U CN 217529538 U CN217529538 U CN 217529538U CN 202220911744 U CN202220911744 U CN 202220911744U CN 217529538 U CN217529538 U CN 217529538U
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- conveyor belt
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The embodiment of the utility model provides a series welding machine, which comprises a heating platform, a first conveyor belt and a limiting component; the first conveyor belt is arranged above the heating platform and used for conveying at least two battery pieces; the limiting assemblies are detachably arranged on two sides of each battery piece and perpendicular to the movement direction of the first conveyor belt, move synchronously with the battery pieces, and are used for fixing a net; and the distance between the adjacent limiting assemblies is adjustable along the movement direction of the first conveyor belt. The utility model discloses among the stringer, when the specification and size of welded battery piece changes, interval between the adjacent spacing subassembly of accessible adjustment makes the interval of pressing the net adjust, can satisfy the welding position requirement of different specification and size's battery piece, helps improving this stringer's commonality.
Description
Technical Field
The utility model relates to a battery piece welding technology field especially relates to a series welding machine.
Background
At present, in the production and manufacturing process of photovoltaic modules, one of the processes is to use a stringer to weld a plurality of battery pieces through solder strips to form a battery string.
In a series welding machine, in order to avoid the defects of insufficient solder and the like caused by the movement of a solder strip, a pressure net is usually connected in the series welding machine, and the pressure net is placed above a battery piece and the solder strip to press and fix the solder strip.
However, in the series welding machine, after the pressing net is connected with the series welding machine, the pressing net is fixed in position and cannot be flexibly adjusted according to battery pieces with different specifications and sizes, and the universality of the series welding machine is poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a stringer aims at solving and presses the net rigidity, can't adjust according to different specification and dimension's battery piece is nimble, stringer's the relatively poor problem of commonality.
The embodiment of the utility model provides a series welding machine, which comprises a heating platform, a first conveyor belt and a limiting component;
the first conveyor belt is arranged above the heating platform and used for conveying at least two battery pieces;
the limiting assemblies are detachably arranged on two sides of each battery piece and perpendicular to the movement direction of the first conveyor belt, move synchronously with the battery pieces, and are used for fixing a net;
and the distance between the adjacent limiting assemblies is adjustable along the movement direction of the first conveyor belt.
Optionally, the limiting assembly comprises a first limiting assembly, and the first limiting assembly is arranged on one side of the pressing net, which is away from the moving direction of the first conveyor belt.
Optionally, the limiting assembly further includes a second limiting assembly, and the second limiting assembly is disposed on one side of the pressing net facing the moving direction of the first conveyor belt.
Optionally, the first limiting assembly includes two L-shaped limiting members, and the second limiting assembly includes two L-shaped limiting members;
the first limiting component and the second limiting component are oppositely arranged to form a rectangular limiting area in a surrounding mode, and the rectangular limiting area is used for fixing the net pressing.
Optionally, the distance between the first and second opposing stop assemblies is adjustable.
Optionally, the first conveyor belt comprises a welding area for placing a battery piece and a connecting area for installing the limiting assembly;
the connecting areas are distributed on two sides of the welding area.
Optionally, the connection region is provided with an adjustment structure;
the limiting assembly is connected with the first conveying belt through the adjusting structure, and the adjusting structure comprises strip-shaped holes extending along the movement direction of the first conveying belt or positioning holes distributed at intervals along the movement direction of the first conveying belt.
Optionally, the stringer further comprises a second conveyor belt;
the second conveyor belt is arranged on two sides of the first conveyor belt along the movement direction of the first conveyor belt;
the limiting assembly is connected to the surface of the second conveyor belt.
Optionally, the second conveyor belt is provided with an adjustment structure;
the limiting assembly is connected with the second conveyor belt through the adjusting structure, and the adjusting structure comprises strip-shaped holes extending along the moving direction of the second conveyor belt or positioning holes distributed at intervals along the moving direction of the second conveyor belt.
Optionally, the stop assembly comprises an elastic stop assembly.
The utility model discloses among the stringer, including heating platform, first conveyer belt and spacing subassembly, first conveyer belt sets up in heating platform's top for convey two slice at least batteries. When the battery piece passes through the heating platform, different battery pieces can be welded together through heating by the welding strip. In the welding process, the limiting assembly can move synchronously with the battery piece, the limiting assembly fixes the pressing net, the pressing net is enabled to compress the grid line to move together with the battery piece, the pressing net can be prevented from deviating, and welding accuracy and reliability are guaranteed. In addition, along the motion direction of first conveyer belt, the interval is adjustable between the adjacent spacing subassembly. Therefore, when the specification and the size of the welded battery piece are changed, the distance between the adjacent limiting assemblies can be adjusted, so that the distance between the pressing nets can be adjusted, the welding positioning requirements of the battery pieces with different specifications and sizes can be met, and the universality of the series welding machine can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 shows a schematic view of a first series welding machine in an embodiment of the invention;
fig. 2 shows a simplified side view of a first series welding machine according to an embodiment of the present invention;
FIG. 3 shows a schematic diagram of a second type of stringer in an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating an L-shaped position limiting element according to an embodiment of the present invention;
fig. 5 shows a schematic view of a first conveyor belt in an embodiment of the invention;
fig. 6 shows a schematic view of another first conveyor belt in an embodiment of the invention;
fig. 7 shows a schematic diagram of a third stringer in an embodiment of the present invention;
fig. 8 shows a schematic diagram of a fourth kind of stringer in an embodiment of the present invention.
Description of the figure numbering:
the device comprises a heating platform-10, a first conveyor belt-11, a limiting component-12, a second conveyor belt-13, a battery piece-20, a net pressing-30, a welding area-111, a connecting area-112, an adjusting structure-113, a first limiting component-121 and a second limiting component-122.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 and 2, schematic diagrams of a stringer provided by the present invention are shown, the stringer including a heating platform 10, a first conveyor belt 11 and a limiting assembly 12;
the first conveyor belt 11 is disposed above the heating platform 10, and the first conveyor belt 11 is used for conveying at least two battery pieces 20;
the limiting assemblies 12 are detachably arranged on two sides of each battery piece 20 and perpendicular to the movement direction of the first conveyor belt 11, the limiting assemblies 12 move synchronously with the battery pieces 20, and the limiting assemblies 12 are used for fixing the net pressing 30;
along the moving direction of the first conveyor belt 11, the distance between the adjacent limiting assemblies 12 is adjustable.
Specifically, as shown in fig. 1 and fig. 2, the stringer according to an embodiment of the present invention includes a heating platform 10, a first conveyor belt 11, and a limiting assembly 12. The heating platform 10 is used to form a thermal field environment required by a welding process, and can weld the welding strip and the battery piece 20 together. With reference to the schematic diagrams of fig. 1 and fig. 2, the first conveyor belt 11 is disposed above the heating platform 10, and a battery piece 20 and a welding strip for welding the battery piece 20 are laid on a surface of the first conveyor belt 11. The first conveyor belt 11 is driven by the driving motor and the roller to move along the direction M shown in the figure, and the battery piece 20 and the welding strip also move along with the first conveyor belt.
Perpendicular to the moving direction of the first conveyor belt 11, at each battery piece 20 both sides, the detachable is provided with spacing subassembly 12, for example, can set up the cassette on conveyor belt 11, with spacing subassembly 12 card income cassette in, realize spacing subassembly 12 fixed in conveyor belt 11. The limiting assemblies 12 on the two sides can respectively restrain and fix the two ends of the pressing net 30, and meanwhile, the limiting assemblies 20 can move synchronously with the battery pieces 20. Therefore, when the battery piece 20 moves along with the first conveyor belt 11, the pressing net 30 can press the welding strip to move synchronously with the battery piece 20, so that the pressing net 30, the welding strip and the battery piece 20 do not have relative displacement, and the welding accuracy and reliability can be effectively ensured.
In addition, in the illustrated stringer, the limiting assembly 12 is detachably connected when being installed in the stringer, and the limiting assembly 12 can be reinstalled and fastened at other positions after being detached. As illustrated in fig. 1, the spacing between adjacent stop assemblies 12 is adjustable along the moving direction M of the first conveyor belt 11. The interval between adjacent spacing subassembly 12 is L1, and when the size of battery piece 20 along M direction was great, the corresponding interval that needs the adjacent net 30 of pressing of increase, can dismantle the back reinstallation with arbitrary a set of spacing subassembly 12 this moment, and it can to make adjacent spacing subassembly 12 keep away from. When the size of the battery piece 20 along the M direction is smaller, the distance between the adjacent pressing nets 30 needs to be reduced correspondingly, and at this time, any one group of limiting assemblies 12 can be dismounted and then remounted, so that the adjacent limiting assemblies 12 can be close to each other.
The utility model discloses among the stringer, including heating platform, first conveyer belt and spacing subassembly, first conveyer belt sets up in heating platform's top for convey two piece at least battery pieces. When the battery piece passes through the heating platform, different battery pieces can be welded together by the welding strip through heating. In the welding process, the limiting assembly can move synchronously with the battery piece, the limiting assembly fixes the pressing net, the pressing net is enabled to compress the grid line to move together with the battery piece, the pressing net can be prevented from deviating, and welding accuracy and reliability are guaranteed. In addition, along the motion direction of first conveyer belt, the interval is adjustable between the adjacent spacing subassembly. Therefore, when the specification and the size of the welded battery piece are changed, the distance between the adjacent limiting assemblies can be adjusted, so that the distance between the pressing nets can be adjusted, the welding positioning requirements of the battery pieces with different specifications and sizes can be met, and the universality of the series welding machine can be improved.
Optionally, referring to fig. 1 or 3, the limiting assembly 12 includes a first limiting assembly 121, and the first limiting assembly 121 is disposed on a side of the pressing net 30 facing away from the moving direction of the first conveyor belt 11.
Specifically, in an embodiment, since the string welding machine is started and operated, the pressing net 30 is prone to slip relative to the welding strip and the battery piece 20 due to inertia, in order to eliminate the movement of the pressing net 30 in the starting and operating stage of the string welding machine, the limiting assembly 12 may include a first limiting assembly 121, and the first limiting assembly 121 is disposed on one side of the pressing net 30, which is away from the moving direction of the first conveyor belt 11. With reference to the schematic diagrams of fig. 1 or fig. 3, it can be easily understood that, when the series welding machine is started, the pressing net 30 tends to remain still under the action of inertia, however, under the blocking of the first limiting component 121, the pressing net 30 cannot slide relative to the welding strip and the battery piece 20 in the direction away from M, so that the accuracy and reliability of welding in the subsequent welding process can be ensured.
Optionally, referring to fig. 1 or fig. 3, the limiting assembly 12 further includes a second limiting assembly 122, and the second limiting assembly 122 is disposed on one side of the press net 30 facing the moving direction of the first conveyor belt 11.
Specifically, in one embodiment, the wire 30 may also slip in the direction M as shown due to uneven speed of movement while the stringer is in operation. Therefore, the limiting assembly 12 further includes a second limiting assembly 122, and the second limiting assembly 122 is disposed on one side of the pressing net 30 facing the moving direction of the first conveyor belt 11. With reference to the schematic illustration of fig. 1 or fig. 3, it is easily understood that the second limiting component 122 can prevent the pressing net 30 from sliding forward, thereby helping to ensure the accuracy and reliability of welding.
Optionally, referring to fig. 1 or fig. 3, the first limiting assembly 121 includes two L-shaped limiting members, and the second limiting assembly 122 includes two L-shaped limiting members;
the first limiting component 121 and the second limiting component 122 are oppositely arranged to form a rectangular limiting area, and the rectangular limiting area is used for fixing the net pressing 30.
Specifically, in one embodiment, as illustrated in fig. 1 or fig. 3, each of the first limiting assembly 121 and the second limiting assembly 122 may include two L-shaped limiting members, and as shown in fig. 4, the structure of the L-shaped limiting member is shown. In combination with the drawings, the two L-shaped limiting members of the first limiting assembly 121 are located on one side of the net pressing 30 away from the M direction, and the two L-shaped limiting members of the second limiting assembly 122 are located on one side of the net pressing 30 toward the M direction. Therefore, the illustrated four L-shaped position-limiting members surround a rectangular position-limiting area, and the pressing net 30 is embedded in the rectangular position-limiting area, and can be constrained and limited by the first position-limiting component 121 and the second position-limiting component 122 on two sides. It should be noted that, along the direction M shown in the figure, the distance between the first limiting component 121 and the second limiting component 122 is the same as the size of the connecting portion of the net pressing 30, so as to avoid the loosening of the net pressing 30.
Optionally, the distance between the first and second opposing stop assemblies 121 and 122 is adjustable.
Specifically, in one embodiment, except for the adjustment of the spacing L1 between adjacent stop assemblies 12. As shown in fig. 1, the installation position of any one of the first limiting component 121 and the second limiting component 122 may be changed, so that the distance L2 between the first limiting component 121 and the second limiting component 122 is adjusted, and therefore, the compression nets 30 with different sizes may be constrained and fixed, and the fixing requirements of the compression nets 30 with more specifications are met.
Alternatively, referring to fig. 5 or 6, the first conveyor belt 11 includes a welding region 111 where the battery piece 20 is placed and a connection region 112 where the stopper assembly 12 is mounted;
the connection regions 112 are distributed on both sides of the welding region 111.
Specifically, in one embodiment, as illustrated in fig. 5 or 6, the first conveyor belt 11 includes a welding region 111 where the battery piece 20 is placed and a connection region 112 where the stopper assembly 12 is mounted. At least two battery pieces 20 are linearly arranged in a battery string in the moving direction of the first conveyor belt 11 at the welding region 111. The blank areas at both sides of the moving direction of the first conveyor belt 11 may be provided as the coupling areas 112 where the stopper assemblies 12 are mounted. At this time, the connection regions 112 are distributed on both sides of the soldering region 111. After the stop assembly 12 is mounted on the connection area 112, the pressing net 30 can press the solder strip across the soldering area 111. In this structure, the limiting assembly 12 can be directly connected to the first conveyor belt 11 for conveying the battery plate 20 and the solder strip, and the movement synchronization is higher.
Optionally, referring to fig. 5 or 6, the connection area 112 is provided with an adjustment structure 113;
the limiting assembly 12 is connected to the first conveyor belt 11 through the adjusting structure 113, and the adjusting structure 113 includes strip-shaped holes extending along the moving direction of the first conveyor belt 11, or positioning holes distributed at intervals along the moving direction of the first conveyor belt 11.
Specifically, in one embodiment, an adjusting structure 113 may be disposed at the connecting region 112, and the installation position of the limiting assembly 12 may be adjusted by the adjusting structure 113 to achieve the adjustment of the spacing. Specifically, as illustrated in fig. 5, the adjusting structure 113 may be a strip-shaped hole formed in the connecting region 112, and the length direction of the strip-shaped hole is the same as the moving direction of the first conveyor belt 11. The screw passes through the strip-shaped hole to be connected with the limiting component 12, and then the limiting component 12 can be fastened. When the distance needs to be adjusted, only the screws need to be loosened, and the sliding, repositioning and locking are carried out along the length direction of the strip-shaped holes. Such an adjustment structure 113 allows for a continuous adjustment of the pitch. In addition, the limiting assembly 12 can be adhered to the surface of the first conveyor belt 11 by adopting an adhesive in an adhering mode, and when the distance needs to be adjusted, the limiting assembly 12 can be detached and adhered again in a physical or chemical mode.
As illustrated in fig. 6, the adjusting structure 113 may also be a plurality of positioning holes formed in the connecting region 112, and the plurality of positioning holes are spaced along the moving direction of the first conveyor belt 11. The limiting component 12 can be fastened by passing a screw through the positioning hole to be connected with the limiting component 12. When the distance needs to be adjusted, the screw is loosened, and the limiting assembly 12 is replaced by other positioning holes to be repositioned and locked. The adjusting structure 113 can avoid forming a long hole, and has less damage to the first conveyor belt 11.
Optionally, referring to fig. 7 or 8, the stringer further comprises a second conveyor belt 13;
the second conveyor belts 13 are arranged on two sides of the first conveyor belt 11 along the moving direction of the first conveyor belt 11;
the limiting assembly 12 is connected to the surface of the second conveyor belt 13.
Specifically, in one embodiment, the thickness of the first conveyor belt 11 may be thin in consideration of practical use in order to ensure heat transfer performance at the time of welding. In order to reliably fix the position-limiting assembly 12, the second conveyor belts 13 may be separately arranged on both sides of the first conveyor belt 11, and the second conveyor belts 13 may be thicker than the first conveyor belt 11, so as to ensure that an adequate installation base is provided for the position-limiting assembly 12. The check assembly 12 may be attached to the surface of the second conveyor belt 13 similar to the attachment area 112 where the check assembly 12 is attached to the first conveyor belt 11. The second belt 13 and the first belt 11 may be driven by the same driving motor and roller, or may be driven by separate driving motors and rollers, and the second belt 13 and the first belt 11 may move synchronously.
Alternatively, with reference to fig. 7 and 8, said second conveyor belt 13 is provided with an adjustment structure 113;
the limiting component 12 is connected to the second conveyor belt 13 through the adjusting structure 113, and the adjusting structure 113 includes a strip-shaped hole extending along the moving direction of the second conveyor belt 13, or positioning holes distributed at intervals along the moving direction of the second conveyor belt 13.
Specifically, in one embodiment, an adjusting structure 113 may be disposed on the surface of the second conveyor belt 13, and the installation position of the limiting component 12 may be adjusted by the adjusting structure 113, so as to adjust the distance. Specifically, as illustrated in fig. 7, the adjusting structure 113 may be a strip-shaped hole, and the length direction of the strip-shaped hole is the same as the moving direction of the second conveyor belt 13. The screw passes through the strip-shaped hole to be connected with the limiting component 12, so that the limiting component 12 can be fastened. When the distance needs to be adjusted, only the screws need to be loosened, and the sliding, repositioning and locking are carried out along the length direction of the strip-shaped holes. Such an adjustment structure 113 allows for a continuous adjustment of the pitch. In addition, the limiting assembly 12 can be adhered to the surface of the second conveyor belt 13 by adopting an adhesive in an adhering mode, and when the distance needs to be adjusted, the limiting assembly 12 can be detached and adhered again in a physical or chemical mode.
As illustrated in fig. 8, the adjusting structure 113 may also be a plurality of positioning holes, which are spaced apart along the moving direction of the second conveyor belt 13. The screw passes through the positioning hole to be connected with the limiting component 12, and then the limiting component 12 can be fastened. When the distance needs to be adjusted, the screw is loosened, and the limiting assembly 12 is replaced by other positioning holes to be repositioned and locked. The adjusting structure 113 can avoid the formation of long holes, and has less damage to the second conveyor belt 13.
Optionally, the stop assembly 12 comprises a resilient stop assembly.
Specifically, in one embodiment, the first conveyor belt 11 or the second conveyor belt 13 moves circularly around the roller due to the connection and synchronous movement of the position-limiting assembly 12 with the first conveyor belt 11 or the second conveyor belt 13. Therefore, in order to prevent the rigid stopper member 12 from damaging the first conveyor belt 11 or the second conveyor belt 13 when passing through the roller, the elastic stopper member may be made of a material having heat resistance, such as rubber. When the first conveyor belt 11 or the second conveyor belt 13 drives the elastic limiting component to pass through the roller part, the elastic limiting component can be elastically deformed, and the first conveyor belt 11 or the second conveyor belt 13 is prevented from being damaged.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (10)
1. The series welding machine is characterized by comprising a heating platform, a first conveyor belt and a limiting assembly;
the first conveyor belt is arranged above the heating platform and used for conveying at least two battery pieces;
the limiting assemblies are detachably arranged on two sides of each battery piece and perpendicular to the movement direction of the first conveyor belt, move synchronously with the battery pieces, and are used for fixing a net;
and the distance between the adjacent limiting assemblies is adjustable along the movement direction of the first conveyor belt.
2. The stringer according to claim 1, wherein said stop assembly comprises a first stop assembly, said first stop assembly being disposed on a side of said pressing mesh facing away from a direction of movement of said first conveyor belt.
3. The stringer according to claim 2, wherein said stop assembly further comprises a second stop assembly, said second stop assembly being disposed on a side of said press mesh facing a direction of movement of said first conveyor belt.
4. The stringer according to claim 3, wherein said first position limiting assembly comprises two L-shaped position limiting members and said second position limiting assembly comprises two L-shaped position limiting members;
the first limiting component and the second limiting component are oppositely arranged to form a rectangular limiting area in a surrounding mode, and the rectangular limiting area is used for fixing the net pressing.
5. The stringer of claim 4 wherein a spacing between said first and second opposing stop assemblies is adjustable.
6. The stringer according to any of claims 1 to 5, wherein said first conveyor belt comprises a welding area for placing a battery piece and a connection area for mounting said stop assembly;
the connecting areas are distributed on two sides of the welding area.
7. The stringer of claim 6 wherein said attachment region is provided with an adjustment structure;
the limiting assembly is connected with the first conveying belt through the adjusting structure, and the adjusting structure comprises strip-shaped holes extending along the movement direction of the first conveying belt or positioning holes distributed at intervals along the movement direction of the first conveying belt.
8. The stringer according to any of claims 1 to 5, wherein said stringer further comprises a second conveyor belt;
the second conveyor belts are arranged on two sides of the first conveyor belt along the movement direction of the first conveyor belt;
the limiting assembly is connected to the surface of the second conveyor belt.
9. The stringer according to claim 8, wherein said second conveyor belt is provided with an adjustment structure;
the limiting assembly is connected with the second conveyor belt through the adjusting structure, and the adjusting structure comprises strip-shaped holes extending along the moving direction of the second conveyor belt or positioning holes distributed at intervals along the moving direction of the second conveyor belt.
10. The stringer of claim 1 wherein said stop assembly comprises a resilient stop assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220911744.9U CN217529538U (en) | 2022-04-19 | 2022-04-19 | Series welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220911744.9U CN217529538U (en) | 2022-04-19 | 2022-04-19 | Series welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217529538U true CN217529538U (en) | 2022-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220911744.9U Active CN217529538U (en) | 2022-04-19 | 2022-04-19 | Series welding machine |
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| Country | Link |
|---|---|
| CN (1) | CN217529538U (en) |
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2022
- 2022-04-19 CN CN202220911744.9U patent/CN217529538U/en active Active
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