CN110576276A - Welding strip wire drawing device - Google Patents
Welding strip wire drawing device Download PDFInfo
- Publication number
- CN110576276A CN110576276A CN201910965038.5A CN201910965038A CN110576276A CN 110576276 A CN110576276 A CN 110576276A CN 201910965038 A CN201910965038 A CN 201910965038A CN 110576276 A CN110576276 A CN 110576276A
- Authority
- CN
- China
- Prior art keywords
- wire drawing
- guide groove
- wire
- conveying guide
- horizontal conveying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005491 wire drawing Methods 0.000 title claims abstract description 98
- 238000003466 welding Methods 0.000 title claims abstract description 59
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims description 28
- 238000005520 cutting process Methods 0.000 claims description 15
- 229910000679 solder Inorganic materials 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 210000005056 cell body Anatomy 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
Abstract
the invention provides a welding strip drawing device, which can be used for mechanically and normally operating the drawing of a welding strip, ensuring the drawing quality and improving the drawing efficiency. The input of horizontal transport guide slot is provided with the compression roller subassembly, the input of compression roller subassembly is provided with the pan feeding guide slot, the horizontal transport guide slot is arranged in the up end of vertical support, the rear end is provided with the pressure silk clamping jaw in the transport of horizontal transport guide slot, the pressure silk part perpendicular to of pressure silk clamping jaw the indent cell body setting of horizontal transport guide slot, the input of pressure silk clamping jaw is connected with perpendicularly to the cylinder, a wire drawing device has been arranged in the terminal outside of the transport of horizontal transport guide slot, the wire drawing device is including wire drawing bedplate, wire drawing seat, wire drawing drive arrangement, the bottom of wire drawing seat supports in the wire drawing track and connects wire drawing drive arrangement's power input end, the wire drawing bedplate is located the up end of wire drawing seat.
Description
Technical Field
the invention relates to the technical field of battery piece assembly, in particular to a welding strip drawing device.
Background
the solar photovoltaic panel assembly is a power generation device which can collect heat when exposed to the sun and convert light energy into direct current, and consists of a thin solid photovoltaic cell piece which is almost made of semiconductor materials. When the solar photovoltaic module is produced, a plurality of battery pieces need to be welded together in series, and when the solar photovoltaic module is welded in series, a welding strip needs to be straightened and cut off after welding, but at present, the wire drawing work of the welding strip is carried out manually, so that the tension is unbalanced, or the welding strip is deviated, the stress of the welding strip is changed, the series welding effect of the battery pieces is reduced, and the welding requirement cannot be met; meanwhile, manual operation wastes time and labor, welding efficiency is low, and the requirement of automatic production cannot be met. .
Disclosure of Invention
Aiming at the problems, the invention provides a welding strip drawing device, which can be used for mechanically and normally drawing a welding strip, ensuring the drawing quality and improving the drawing efficiency.
the utility model provides a weld and take wire drawing device which characterized in that: the wire drawing device comprises a horizontal conveying guide groove, wherein a compression roller component is arranged at the input end of the horizontal conveying guide groove, a feeding guide groove is arranged at the input end of the compression roller component, the horizontal conveying guide groove is arranged on the upper end face of a vertical support, a wire pressing clamping jaw is arranged at the rear end of the horizontal conveying guide groove during conveying, the wire pressing part of the wire pressing clamping jaw is perpendicular to the inner concave groove body of the horizontal conveying guide groove, the input end of the wire pressing clamping jaw is connected with a vertical cylinder, a wire drawing device is arranged on the outer side of the conveying tail end of the horizontal conveying guide groove, the wire drawing device comprises a wire drawing seat plate, a wire drawing seat and a wire drawing driving device, the bottom of the wire drawing seat is supported on a wire drawing track and is connected with the power input end of the wire drawing driving device, the wire drawing seat plate is positioned on the upper end face of the wire drawing seat, and an, the wire drawing seat plate is lower than the conveying end face of the horizontal conveying guide groove at the initial position.
It is further characterized in that: the compression roller assembly comprises an upper roller assembly and a lower roller assembly, the upper roller assembly and the lower roller assembly are respectively arranged on the corresponding compression roller assembly mounting frames, and a working area between the upper roller assembly and the lower roller assembly is used for flattening a welding strip of an incoming material;
The starting end of the horizontal conveying guide groove is a closing-up guide section, and the closing-up guide section ensures that the welding strip from the compression roller assembly can smoothly enter the horizontal conveying guide groove as the starting end of the horizontal conveying guide groove enters the horizontal conveying guide groove as the closing-up guide section;
the horizontal conveying guide groove specifically comprises a plurality of bottom plates, a first side edge and a second side edge, the bottom plates, the first side edge and the second side edge of the corresponding length regions are spliced to form the conveying guide groove in the corresponding length position, and the width of the horizontal conveying guide groove ensures the straightening conveying of the welding strip;
The corresponding bottom plate is fixedly arranged on the upper end face of the vertical support in the corresponding length direction, and then the corresponding first side edge and the corresponding second side edge are fixedly connected to the corresponding sides of the bottom plate respectively to form conveying guide grooves in the corresponding length positions;
one side edge of the horizontal conveying guide groove is provided with a flip plate through a hinge, and the solder strip is ensured not to deviate out of the horizontal conveying guide groove in the height direction under the flip state of the flip plate;
the cylinder body of the vertical cylinder is fixedly arranged at the conveying end of the horizontal adjusting cylinder, the horizontal adjusting cylinder is fixedly arranged on a wire pressing support, the wire pressing support is fixedly arranged at the corresponding side position of the vertical support, and a wire pressing clamping jaw is enabled to press and attach a welding strip and then convey a small section towards the wire drawing seat plate, so that the corresponding positions of a positioning bulge on the wire drawing seat plate and a structural hole of the welding strip are convenient to adjust, and the accurate positioning of the wire drawing seat plate and the welding strip is ensured;
The tail end of the horizontal conveying guide groove is provided with a stopping end part, a wire cutting knife is arranged between the stopping end part and the wire drawing seat plate, the wire cutting knife comprises a lower knife board and an upper knife board, the height directions of the lower knife board and the upper knife board form a through space through a guide spring and a guide column, the lower knife board is fixedly connected to a middle cross beam board of a knife portal frame, a wire cutting cylinder is fixedly arranged on a top cross beam of the knife portal frame, and a lower piston of the wire cutting cylinder is fixedly connected with the upper knife board, so that wire cutting operation can be directly carried out after wire drawing is finished;
A vertical adjusting cylinder is arranged between the wire drawing seat plate and the wire drawing seat, and the vertical adjusting cylinder drives the wire drawing seat plate to be equal in height to the horizontal conveying guide groove, so that high-quality wire drawing is ensured;
At least one group of welding strip wire drawing devices are arranged on the upper surface of the long base, so that the occupied space is small.
After the structure of the invention is adopted, the welding strip is flattened in advance through the compression roller assembly, then enters the horizontal conveying guide groove for guiding, then the tail end enters the wire drawing seat plate, the positioning is completed through the positioning bulge on the wire drawing seat plate and the structural hole on the welding strip, meanwhile, the other end position of the welding strip is pressed and attached through the wire pressing clamping jaw, the power of the wire drawing driving device drives the wire drawing seat to draw wires along the wire drawing track, the tension of the wire drawing power device is balanced, the automation is realized, the welding strip moves linearly in the moving process, the straight state during welding is ensured, the welding quality is improved, the tension is balanced in the process of pulling the welding strip, the structure of the welding strip cannot be damaged, and the phenomenon of false welding cannot occur during welding; in conclusion, the wire drawing of the welding strip is mechanically operated in a standard manner, the wire drawing quality is ensured, and the wire drawing efficiency is improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of the shredder of the present invention;
FIG. 3 is a schematic cross-sectional view of the shredding knife of FIG. 2;
FIG. 4 is an assembled perspective view of the wire pressing jaw and the wire pressing bracket of the present invention;
FIG. 5 is an enlarged view of a portion A of FIG. 1;
the names corresponding to the sequence numbers in the figure are as follows:
the device comprises a horizontal conveying guide groove 1, a closing guide section 101, a bottom plate 102, a first side 103, a second side 104, a stop end 105, a press roll assembly 2, an upper roll assembly 21, a lower roll assembly 22, a press roll assembly mounting frame 23, a feeding guide groove 3, a vertical support 4, a wire pressing clamping jaw 5, a wire pressing part 51, a vertical cylinder 6, a wire drawing device 7, a wire drawing seat plate 71, a wire drawing seat 72, a wire drawing driving device 73, a wire drawing rail 74, a positioning bulge 75, a vertical adjusting cylinder 76, a welding strip 8, a structural hole 81, a hinge 9, a flip plate 10, a horizontal adjusting cylinder 11, a wire pressing support 12, a wire cutter 13, a lower cutter plate 131, an upper cutter plate 132, a guide spring 133, a guide column 134, a passing space 135, a cutter frame 14, a middle cross beam plate 141, a top cross beam 142, a wire cutting cylinder 15 and a long strip-shaped base.
Detailed Description
a solder strip drawing apparatus, see fig. 1-4: the wire drawing device comprises a horizontal conveying guide groove 1, a pressure roller assembly 2 is arranged at the input end of the horizontal conveying guide groove 1, a feeding guide groove 3 is arranged at the input end of the pressure roller assembly 2, the horizontal conveying guide groove 1 is arranged on the upper end face of a vertical support 4, a wire pressing clamping jaw 5 is arranged at the rear end of the horizontal conveying guide groove 2 during conveying, a wire pressing part 51 of the wire pressing clamping jaw 5 is perpendicular to an inner concave groove body of the horizontal conveying guide groove 1, the input end of the wire pressing clamping jaw 5 is connected with a vertical cylinder 6, a wire drawing device 7 is arranged on the outer side of the conveying tail end of the horizontal conveying guide groove 1, the wire drawing device 7 comprises a wire drawing seat plate 71, a wire drawing seat 72 and a wire drawing driving device 73, the bottom of the wire drawing seat 72 is supported on a wire drawing rail 74 and is connected with a power input end of the wire drawing device 73, the wire drawing seat plate 71 is positioned on the upper end, the drawing base plate 71 is lower than the conveying end face of the horizontal conveying guide groove 1 at the initial position. Due to the existence of the positioning protrusion 75, the drawing base plate 71 is lower than the conveying end surface of the horizontal conveying guide groove 1 at the initial position, so that the welding strip 8 can be conveyed normally.
the compression roller assembly 2 comprises an upper roller assembly 21 and a lower roller assembly 22, the upper roller assembly 21 and the lower roller assembly 22 are respectively installed on corresponding compression roller assembly installation frames 23, and a working area between the upper roller assembly 21 and the lower roller assembly 22 is used for flattening the supplied welding strip 8;
The starting end of the horizontal conveying guide groove 1 is a closing guide section 101, and the closing guide section 101 ensures that the welding strip 8 coming out of the compression roller assembly 2 can smoothly enter the horizontal conveying guide groove 1;
The horizontal conveying guide slot 1 specifically comprises a plurality of bottom plates 102, a first side 103 and a second side 104, the bottom plates 102, the first side 103 and the second side 104 corresponding to the length regions are spliced to form the conveying guide slot corresponding to the length positions, and the width of the horizontal conveying guide slot ensures the straightening conveying of the welding strips 8;
The corresponding bottom plate 102 is fixedly arranged on the upper end surface of the vertical support 4 in the corresponding length direction, and then the corresponding first side edge 103 and the corresponding second side edge 104 are respectively fixedly connected to the corresponding side of the bottom plate 102 to form a conveying guide groove in the corresponding length position;
one side edge of the horizontal conveying guide groove 1 is provided with a flip plate 10 through a hinge 9, and the solder strip 8 is ensured not to deviate out of the horizontal conveying guide groove 1 in the height direction under the flip state of the flip plate 10;
The cylinder body of the vertical cylinder 6 is fixedly arranged at the conveying end of the horizontal adjusting cylinder 11, the horizontal adjusting cylinder 11 is fixedly arranged on a wire pressing support 12, the wire pressing support 12 is fixedly arranged at the corresponding side position of the vertical support 4, so that the wire pressing clamping jaw 5 is enabled to press and attach the welding strip 8 and then convey a small section towards the wire drawing seat plate 71, the corresponding positions of the positioning bulge 75 on the wire drawing seat plate 71 and the structural hole 81 of the welding strip 8 are convenient to adjust, and the accurate positioning of the wire drawing seat plate 71 and the welding strip 8 is ensured;
The tail end of the horizontal conveying guide groove 1 is provided with a stopping end part 105, a wire cutting knife 13 is arranged between the stopping end part 105 and the wire drawing seat plate 71, the wire cutting knife 13 comprises a lower knife board 131 and an upper knife board 132, the height directions of the lower knife board 131 and the upper knife board 132 form a passing space 135 through a guide spring 133 and a guide column 134, the lower knife board 131 is fixedly connected with a middle cross beam board 141 of the knife portal frame 14, a top cross beam 142 of the knife portal frame 14 is fixedly provided with a wire cutting cylinder 15, and a lower piston of the wire cutting cylinder 15 is fixedly connected with the upper knife board 132, so that wire cutting operation can be directly carried out after wire drawing is finished;
A vertical adjusting cylinder 76 is arranged between the wire drawing seat plate 71 and the wire drawing seat 72, the vertical adjusting cylinder 76 drives the wire drawing seat plate 71 to have the same height as the horizontal conveying guide groove 1, and the high-quality wire drawing is ensured;
in the specific embodiment, two groups of welding strip wire-drawing devices are arranged in parallel, and the bottom of each group of welding strip wire-drawing devices is provided with the strip-shaped base 16, so that the occupied space is small.
The working principle is as follows: the welding strip is flattened in advance through the compression roller assembly, then enters the horizontal conveying guide groove for straightening, then the tail end of the welding strip enters the wire drawing seat plate, positioning is completed through the positioning protrusion on the wire drawing seat plate and the structural hole on the welding strip, meanwhile, the other end of the welding strip is attached to the other end of the welding strip through pressing of the wire pressing clamping jaw, the wire drawing seat is driven by power of the wire drawing driving device to draw wires along a wire drawing track, and the tension of the wire drawing power device is balanced and arranged, so that automation is realized, the welding strip moves linearly in the moving process, the welding strip is in a straight state during welding, the welding quality is improved, in the process of pulling the welding strip, the tension is balanced, the structure of the welding strip cannot be damaged, and the phenomenon of false welding cannot; in conclusion, the wire drawing of the welding strip is mechanically operated in a standard manner, the wire drawing quality is ensured, and the wire drawing efficiency is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a weld and take wire drawing device which characterized in that: the wire drawing device comprises a horizontal conveying guide groove, wherein a compression roller component is arranged at the input end of the horizontal conveying guide groove, a feeding guide groove is arranged at the input end of the compression roller component, the horizontal conveying guide groove is arranged on the upper end face of a vertical support, a wire pressing clamping jaw is arranged at the rear end of the horizontal conveying guide groove during conveying, the wire pressing part of the wire pressing clamping jaw is perpendicular to the inner concave groove body of the horizontal conveying guide groove, the input end of the wire pressing clamping jaw is connected with a vertical cylinder, a wire drawing device is arranged on the outer side of the conveying tail end of the horizontal conveying guide groove, the wire drawing device comprises a wire drawing seat plate, a wire drawing seat and a wire drawing driving device, the bottom of the wire drawing seat is supported on a wire drawing track and is connected with the power input end of the wire drawing driving device, the wire drawing seat plate is positioned on the upper end face of the wire drawing seat, and an, the wire drawing seat plate is lower than the conveying end face of the horizontal conveying guide groove at the initial position.
2. a solder ribbon drawing apparatus according to claim 1, wherein: the compression roller assembly comprises an upper roller assembly and a lower roller assembly, the upper roller assembly and the lower roller assembly are respectively installed on corresponding compression roller assembly installation frames, and a working area between the upper roller assembly and the lower roller assembly is used for flattening a welding strip of supplied materials.
3. A solder ribbon drawing apparatus according to claim 1, wherein: the starting end of the horizontal conveying guide groove is a closing guide section.
4. a solder ribbon drawing apparatus according to claim 1, wherein: the horizontal conveying guide groove specifically comprises a plurality of bottom plates, a first side edge and a second side edge, the bottom plates, the first side edge and the second side edge which correspond to the length regions are spliced to form the conveying guide groove corresponding to the length positions, and the width of the horizontal conveying guide groove ensures straightening conveying of the welding strip.
5. the solder ribbon drawing apparatus according to claim 4, wherein: the corresponding bottom plate is fixedly arranged on the upper end face of the vertical support in the corresponding length direction, and then the corresponding first side edge and the corresponding second side edge are fixedly connected to the corresponding sides of the bottom plate respectively to form conveying guide grooves in the corresponding length positions.
6. the solder ribbon drawing apparatus according to claim 4, wherein: one side edge of the horizontal conveying guide groove is provided with a flip plate through a hinge, and the solder strip is ensured not to deviate out of the horizontal conveying guide groove in the height direction under the flip state of the flip plate.
7. A solder ribbon drawing apparatus according to claim 1, wherein: the cylinder body of the vertical cylinder is fixedly arranged at the conveying end of the horizontal adjusting cylinder, the horizontal adjusting cylinder is fixedly arranged on the wire pressing support, and the wire pressing support is fixedly arranged at the corresponding side position of the vertical support.
8. A solder ribbon drawing apparatus according to claim 1, wherein: the tail end of the horizontal conveying guide groove is provided with a stop end part, the stop end part and a wire cutting knife are arranged between the wire drawing seat plates, the wire cutting knife comprises a lower knife board and an upper knife board, the height direction of the lower knife board and the upper knife board forms a passing space through a guide spring and a guide column, the lower knife board is fixedly connected with a middle cross beam board of the knife portal frame, a top cross beam of the knife portal frame is fixedly provided with a wire cutting cylinder, and a lower piston of the wire cutting cylinder is fixedly connected with the upper knife board.
9. A solder ribbon drawing apparatus according to claim 1, wherein: and a vertical adjusting cylinder is arranged between the wire drawing seat plate and the wire drawing seat, and the vertical adjusting cylinder drives the wire drawing seat plate to have the same height as the horizontal conveying guide groove.
10. a solder ribbon drawing apparatus according to claim 1, wherein: at least one group of welding strip wire drawing devices are arranged on the upper surface of the strip-shaped base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910965038.5A CN110576276A (en) | 2019-10-11 | 2019-10-11 | Welding strip wire drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910965038.5A CN110576276A (en) | 2019-10-11 | 2019-10-11 | Welding strip wire drawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110576276A true CN110576276A (en) | 2019-12-17 |
Family
ID=68814602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910965038.5A Pending CN110576276A (en) | 2019-10-11 | 2019-10-11 | Welding strip wire drawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110576276A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898288A (en) * | 2010-08-08 | 2010-12-01 | 天津必利优科技发展有限公司 | Fixed-length welding-band straightening, cutting and transporting device |
| EP2273567A1 (en) * | 2009-06-30 | 2011-01-12 | Feintool Intellectual Property AG | Method and device for stretching solder wire |
| CN201862661U (en) * | 2010-11-30 | 2011-06-15 | 富科-思邦太阳能技术（太仓）有限公司 | Solar photovoltaic welding strip alignment device |
| CN104416358A (en) * | 2013-08-23 | 2015-03-18 | 苏州沃特维自动化系统有限公司 | Wire drawing and cutting device |
| CN106808120A (en) * | 2017-01-17 | 2017-06-09 | 无锡先导智能装备股份有限公司 | A kind of tab welding device and welding method |
| CN107186392A (en) * | 2017-04-20 | 2017-09-22 | 陈红 | A kind of solar battery sheet automatic string welding machine welding shears alignment system |
| CN208093511U (en) * | 2018-04-28 | 2018-11-13 | 深圳市拉普拉斯能源技术有限公司 | A kind of clamping jaw device that welding stretches |
| CN210818096U (en) * | 2019-10-11 | 2020-06-23 | 苏州沃特维自动化系统有限公司 | Welding strip wire drawing device |
-
2019
- 2019-10-11 CN CN201910965038.5A patent/CN110576276A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2273567A1 (en) * | 2009-06-30 | 2011-01-12 | Feintool Intellectual Property AG | Method and device for stretching solder wire |
| CN101898288A (en) * | 2010-08-08 | 2010-12-01 | 天津必利优科技发展有限公司 | Fixed-length welding-band straightening, cutting and transporting device |
| CN201862661U (en) * | 2010-11-30 | 2011-06-15 | 富科-思邦太阳能技术（太仓）有限公司 | Solar photovoltaic welding strip alignment device |
| CN104416358A (en) * | 2013-08-23 | 2015-03-18 | 苏州沃特维自动化系统有限公司 | Wire drawing and cutting device |
| CN106808120A (en) * | 2017-01-17 | 2017-06-09 | 无锡先导智能装备股份有限公司 | A kind of tab welding device and welding method |
| CN107186392A (en) * | 2017-04-20 | 2017-09-22 | 陈红 | A kind of solar battery sheet automatic string welding machine welding shears alignment system |
| CN208093511U (en) * | 2018-04-28 | 2018-11-13 | 深圳市拉普拉斯能源技术有限公司 | A kind of clamping jaw device that welding stretches |
| CN210818096U (en) * | 2019-10-11 | 2020-06-23 | 苏州沃特维自动化系统有限公司 | Welding strip wire drawing device |
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