CN106493445A - Self- steering welding pressing and self- steering welding are reformed mechanism, series welding head and series welding machine - Google Patents
Self- steering welding pressing and self- steering welding are reformed mechanism, series welding head and series welding machine Download PDFInfo
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- CN106493445A CN106493445A CN201710011073.4A CN201710011073A CN106493445A CN 106493445 A CN106493445 A CN 106493445A CN 201710011073 A CN201710011073 A CN 201710011073A CN 106493445 A CN106493445 A CN 106493445A
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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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- 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
- B23K2101/36—Electric or electronic devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A kind of self- steering welding pressing and self- steering welding are reformed mechanism，One end of self- steering welding pressing is arranged to the groove of indent，When cell piece and arc surface welding are arranged to the welding station of series welding machine，Series welding head drives the self- steering welding mechanism that reforms to move down，Self- steering welding pressing touches circular arc welding，Circular arc welding is moved along the ramped side walls of groove to the center of groove，Because the groove of pressing indent produces the power contacted by arc surface welding，Make arc surface welding reformed to pressing indent groove in，The groove center of the indent of pressing is just right with cell piece main gate line，Therefore，It is just right with cell piece main gate line that arc surface welding is reformed to，And do not contact with cell piece because of the self- steering welding pressing，Self- steering welding pressing is made only to produce the active force for pushing to arc surface welding，Arc surface welding is enable to be in close contact with cell piece main gate line，It is effectively guaranteed the welding quality and efficiency for connecting cell piece with arc surface welding.
Description
Technical field
The present invention relates to welding of battery film technical field, more particularly to a kind of self- steering welding pressing and self- steering welding are returned
Positive mechanism, series welding head and series welding machine.
Background technology
Photovoltaic industry is developed so far, with the change of component price and the market demand, close grid crystal silicon solar cell sheet
The consumption for being found silver paste disappears to silver paste than a large amount of three grid for using, four grid and five grid crystalline silicon battery plates in the market
Consumption declines 30%～50%, and tests proof, and close grid component can make component power lift 2.5%～3.5%, therefore close grid crystalline silicon
Solar battery sheet is that each component producer prepares a large amount of cell pieces for using at present, so-called close grid crystal silicon solar cell sheet,
Refer to that the quantity of main gate line on 156mm × 156mm solar battery sheets is less than the solar battery sheet of 32 more than 6.
But in component manufacturing process, because close grid crystalline silicon battery plate grid line number more and close, manual welding efficiency very bottom
And percentage of damage is higher, therefore the anxious automation equipment for treating close grid cell piece is replacing manual welding.At present, transported in a large number on the market
Welding is face bonding band, using plane contact pressing can butt welding band preferably positioned, but for circular arc weld
Band cannot be just accurately positioned, and have impact on the work quality and efficiency of automatic welding equipment.
In close grid crystalline silicon battery plate, face bonding band has not been applied to, and the substitute is circular arc welding, the circular arc
The diameter of shape welding only has 0.4mm or so, easilys lead to circular arc welding off-center position using existing welding pressing,
Prevent circular arc welding with close grid cell piece main gate line from completely corresponding, increased the contact resistance of welding, reduce welding
Reliability, therefore, urgent need can enable the circular arc welding and close grid cell piece main gate line accurately corresponding device.
In the patent of Application No. CN201210473468, disclose what welding when connecting cell piece with face bonding band was used
Welding pressing, the pressing structure of the patent are namely based on face bonding band and design, if being used for circular arc in close grid cell piece
The positioning of shape welding, when pressing is contacted with circular arc welding, exists and easily misplaces between pressing and circular arc welding, cause to justify
Arc welding sideslip, it is impossible to main gate line just to problem.
Content of the invention
Be necessary to propose a kind of suitable for that circular arc welding is positioned, also circular arc welding is carried out being oriented to reform from
It is oriented to welding pressing.
Also necessary to propose a kind of self- steering welding to reform mechanism, series welding head and series welding machine.
A kind of self- steering welding pressing, the self- steering welding pressing are column structure, the self- steering welding pressing
One end is used for fixing the self- steering welding pressing, and the end of the other end of self- steering welding pressing is opened up for being welded with circular arc
Groove with coordinating.
Preferably, the groove is shaped as inverted v-shaped and/or circular arc.
Preferably, the groove of the inverted v-shaped and/or circular arc is perpendicular with the arc surface welding, the self- steering weldering
Thickness of the distance between the bottom surface in direction and cell piece more than the welding tin coating of twice is contacted with arc surface welding with pressing.
A kind of self- steering welding is reformed mechanism, including guide pin bushing, self- steering welding pressing and buffer unit, during the guide pin bushing is
Columnar structures, one end of the self- steering welding pressing insert the guide pin bushing, and the buffer unit is enclosed within the self- steering weldering
On outer wall with pressing, and buffer unit is contacted with the end of guide pin bushing, the buffer unit and self- steering welding pressing, guide pin bushing
End be relatively fixed, open up screw on the side wall of guide pin bushing, the screw is connected with the hollow cavity of guide pin bushing, holding screw revolve
Enter the screw, to be relatively fixed self- steering welding pressing with guide pin bushing by holding screw, the self- steering welding pressing is
Column structure, one end of the self- steering welding pressing are used for fixing the self- steering welding pressing, self- steering welding pressing
The end of the other end opens up the groove for coordinating with circular arc welding.
Preferably, the distance that the self- steering welding pressing is contacted with arc surface welding between the bottom surface in direction and cell piece is big
Thickness in the welding tin coating of twice.
A kind of series welding head, reforms mechanism including bonding tip seat and the self- steering welding that is fixed on bonding tip seat, on bonding tip seat
Open up some confession self- steering weldings to reform the passage that mechanism passes through, some self- steering weldings reform mechanism insert respectively described
Passage, and the self- steering welding mechanism that reforms is relatively fixed with bonding tip seat, the self- steering welding mechanism that reforms include guide pin bushing, self-conductance
To welding pressing and buffer unit, the guide pin bushing is hollow columnar structures, and the guide pin bushing inserts the passage, and with bonding tip seat phase
To fixation, the guide pin bushing is inserted in one end of the self- steering welding pressing, and the buffer unit is enclosed within the self- steering welding pressure
On the outer wall of pin, and buffer unit is contacted with the end of guide pin bushing, the buffer unit and self- steering welding pressing, the end of guide pin bushing
Portion is relatively fixed, and opens up screw on the side wall of guide pin bushing, and the screw is connected with the hollow cavity of guide pin bushing, and holding screw screws in institute
Screw is stated, to be relatively fixed self- steering welding pressing with guide pin bushing by holding screw, the self- steering welding pressing is column
Structure, one end of the self- steering welding pressing are used for fixing the self- steering welding pressing, self- steering welding pressing another
The end at end opens up the groove for coordinating with circular arc welding.
Preferably, anti-rotation structure is set between the passage and guide pin bushing, and then avoids self- steering welding from reforming mechanism
Rotation between bonding tip seat.
A kind of series welding machine, including frame and rack-mounted feeding device, conveying device, ribbon supply cloth belting, biography
Defeated device, series welding head and collecting mechanism, the feeding device are used for supplying cell piece, and the conveying device is used for transmitting the electricity
Pond piece, the ribbon supply cloth belting is for supplying the circular arc welding for giving the main grid wire bonding on cell piece, and circular arc is welded
By being routed to the back side and front of cell piece after predetermined length cut-out, the series welding head is by the circular arc welding and cell piece for band
On main grid wire bonding, form cell piece string, the cell piece is transferred to series welding head position by the transmitting device, then by battery
Piece string is transported to collecting mechanism, and the series welding head is above-mentioned series welding head.
Above-mentioned self- steering welding pressing and self- steering welding are reformed mechanism, in one end of self- steering welding pressing is arranged to
Recessed groove, the pressing and guide pin bushing, buffer unit composition self- steering welding are reformed mechanism, and apply to the series welding head of series welding machine
In, when cell piece and arc surface welding are arranged to the welding station of series welding machine, series welding head drives self- steering welding to reform machine
Structure is moved down, and self- steering welding pressing touches circular arc welding, during circular arc welding is along the ramped side walls of groove to groove
The heart is moved, and because the groove of pressing indent produces the power for contacting arc surface welding, makes arc surface welding be reformed to pressing indent
Groove in, the groove center of the indent of pressing is just right with cell piece main gate line, and therefore, arc surface welding is reformed to and battery
Piece main gate line is just right, and because the self- steering welding pressing is not contacted with cell piece, self- steering welding pressing is only welded arc surface
With the active force that generation is pushed, arc surface welding is in close contact with cell piece main gate line, be effectively guaranteed and use circular arc
The welding quality and efficiency of face welding connection cell piece.
Description of the drawings
Structural representations of the Fig. 1 for self- steering welding pressing.
Fig. 2 is that self- steering welding is reformed the front view of mechanism.
Fig. 3 is the partial enlarged drawing for expressing the groove in Fig. 2.
Internal sectional schematic diagrams of the Fig. 4 for Fig. 2.
Fig. 5 is the structural representation of the series welding head.
Fig. 6 is the partial enlarged drawing for expressing the passage in Fig. 5.
Structural representations of the Fig. 7 for series welding machine.
Fig. 8 is to express the self- steering welding to reform the partial enlarged drawing of mechanism in Fig. 7.
In figure：Self- steering welding pressing 10, groove 11, self- steering welding reform mechanism 20, guide pin bushing 21, screw 211, buffering
Part 22, series welding head 30, bonding tip seat 31, passage 311, series welding machine 40, cell piece 100, circular arc welding 200.
Specific embodiment
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by to be used attached needed for embodiment
Figure is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, for this area common
For technical staff, on the premise of not paying creative work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Referring to Fig. 1 to Fig. 4, a kind of self- steering welding pressing, the self- steering welding pressing is embodiments provided
10 is column structure, and one end of the self- steering welding pressing 10 is used for fixing the self- steering welding pressing 10, and self- steering is welded
The end of the other end with pressing 10 opens up the groove 11 for coordinating with circular arc welding 200.
Further, the groove 11 is shaped as inverted v-shaped and/or circular arc.
Further, radius of the groove depth of the groove 11 more than the circular arc welding 200, and weld less than circular arc
Diameter with 200.Circular arc welding 200 includes that center is tin coating that is metal-cored and being wrapped in metal core outer surface, in welding
When, tin coating melts, and metal-cored and main gate line is welded to connect, so in order to avoid pressing and the body contact of cell piece 100,
Cause the hidden of cell piece to split, so further limited to the groove depth of groove 11 herein, circular arc welding 200 is being entered
While row contact is limited, it is to avoid pressing is contacted with cell piece 100.In the same manner, it is also possible to limit the self- steering welding pressing 10 with
The thickness of the welding tin coating for being more than twice apart from H between the bottom surface in the contact of arc surface welding 200 direction and cell piece, so keeps away
Exempt from pressing to contact with cell piece 100.
Circular arc welding 200 described in text can be circular welding, oval welding etc., i.e., the outer surface of welding is circle
Shape, ellipse etc. are not the weldings of the abnormity of flat shape.
Referring to Fig. 1 to Fig. 6, the embodiment of the present invention additionally provides a kind of self- steering welding and reforms mechanism 20, including guide pin bushing 21,
Self- steering welding pressing 10 and buffer unit 22, the guide pin bushing 21 are hollow columnar structures, the self- steering welding pressing 10
The guide pin bushing 21 is inserted in one end, and the buffer unit 22 is enclosed within the outer wall of the self- steering welding pressing 10, and buffer unit
22 are contacted with the end of guide pin bushing 21, and the buffer unit 22 is relatively fixed with the end of self- steering welding pressing 10, guide pin bushing 21,
Screw 211 is opened up on the side wall of guide pin bushing 21, the screw 211 is connected with the hollow cavity of guide pin bushing 21, holding screw screws in institute
Screw 211 is stated, self- steering welding pressing 10 and guide pin bushing 21 to be relatively fixed by holding screw, the self- steering welding pressing
10 is column structure, and one end of the self- steering welding pressing 10 is used for fixing the self- steering welding pressing 10, and self- steering is welded
The end of the other end with pressing 10 opens up the groove 11 for coordinating with circular arc welding 200.
Further, the self- steering welding pressing 10 contact with arc surface welding 200 between the bottom surface in direction and cell piece away from
From H more than the thickness of the welding tin coating of twice, pressing is so avoided to contact with cell piece 100.
Referring to Fig. 5, the embodiment of the present invention additionally provides a kind of series welding head 30, including bonding tip seat 31 and is fixed on bonding tip seat 31
On self- steering welding reform mechanism 20, open up some confession self- steering weldings on bonding tip seat 31 and reform the passage that mechanism 20 passes through
311, some self- steering weldings mechanism 20 that reforms inserts the passage 311 respectively, and self- steering welding reform mechanism 20 with
Bonding tip seat 31 is relatively fixed, and the self- steering welding mechanism 20 that reforms includes guide pin bushing 21, self- steering welding pressing 10 and buffer part
Part 22, the guide pin bushing 21 are hollow columnar structures, and the guide pin bushing 21 inserts the passage 311, and is relatively fixed with bonding tip seat 31,
The guide pin bushing 21 is inserted in one end of the self- steering welding pressing 10, and the buffer unit 22 is enclosed within the self- steering welding pressing
On 10 outer wall, and buffer unit 22 is contacted with the end of guide pin bushing 21, the buffer unit 22 and self- steering welding pressing 10,
The end of guide pin bushing 21 is relatively fixed, and opens up screw 211 on the side wall of guide pin bushing 21, and the screw 211 is absolutely empty with guide pin bushing 21
Chamber connects, and holding screw screws in the screw 211, with will be relative with guide pin bushing 21 for self- steering welding pressing 10 solid by holding screw
Fixed, the self- steering welding pressing 10 is column structure, and one end of the self- steering welding pressing 10 is used for fixing the self-conductance
To welding pressing 10, the end of the other end of self- steering welding pressing 10 opens up the groove for coordinating with circular arc welding 200
11.Self- steering welding reforms mechanism 20 according to the pad position number setting in welded cell piece main gate line.
Further, anti-rotation structure is set between passage 311 and guide pin bushing 21, and then avoids self- steering welding from reforming mechanism
Rotation between 20 and bonding tip seat 31.The anti-rotation structure can by the lateral wall of the medial wall of passage 311 and guide pin bushing 21 it
Between cooperation realizing.
For example, the cross sectional shape of the passage 311 be rectangle, the rectangular drift angle be chamfering, the guide pin bushing 21
It is the four prisms cylinder coordinated with the passage 311, with the cooperation by four prisms cylinder and oblong channel 311, it is to avoid self- steering
Welding is reformed the rotation of mechanism 20.
Passage can also be provided in round through hole in advance, then mill out on the side wall of circular channel two relative flat
Face, and then the structure similar to slotted hole is formed, the lateral wall of guide pin bushing 21 is also configured as the structure similar to slotted hole equally,
So that coordinating between the medial wall of the lateral wall of guide pin bushing 21 and passage 311, it is to avoid relatively rotate.
Above-mentioned rectangle can also be the regular polygon after chamfering, such as tetragon, hexagon, outside corresponding guide pin bushing 21
Regular polygon after the wall liquid level chamfering of side, such as tetragon, hexagon etc..
Referring to Fig. 7 and 8, the present invention also proposes a kind of series welding machine 40, fills including frame and rack-mounted feed
Put, conveying device, ribbon supply cloth belting, transmitting device, series welding head 30 and collecting mechanism, the feeding device is used for supplying battery
Piece, the conveying device are used for transmitting the cell piece, and the ribbon supply cloth belting gives the main gate line on cell piece for confession
The circular arc welding 200 of welding, and by circular arc welding 200 by the back side and just for being routed to cell piece after predetermined length cut-out
The circular arc welding 200 and the main grid wire bonding on cell piece are formed cell piece string, the biography by face, the series welding head 30
The cell piece is transferred to 30 position of series welding head by defeated device, then cell piece string is transported to collecting mechanism, the series welding head 30
For above-mentioned series welding head 30.
Module or unit in inventive embodiments device can be merged according to actual needs, divide and be deleted.
Above disclosed is only present pre-ferred embodiments, can not limit certainly the right model of the present invention with this
Enclose, one of ordinary skill in the art will appreciate that all or part of flow process of above-described embodiment is realized, and will according to right of the present invention
Made equivalent variations are sought, the covered scope of invention is still fallen within.
Claims (8)
1. a kind of self- steering welding pressing, it is characterised in that：The self- steering welding pressing is column structure, the self- steering weldering
One end with pressing is used for fixing the self- steering welding pressing, the end of the other end of self- steering welding pressing open up for
The groove that arc surface welding coordinates.
2. self- steering welding pressing as claimed in claim 1, it is characterised in that：The groove be shaped as inverted v-shaped and/or
Circular arc.
3. self- steering welding pressing as claimed in claim 2, it is characterised in that：The inverted v-shaped and/or the groove of circular arc
Perpendicular with the arc surface welding, the self- steering welding pressing is contacted between the bottom surface in direction and cell piece with arc surface welding
Thickness of the distance more than the welding tin coating of twice.
4. a kind of self- steering welding is reformed mechanism, it is characterised in that：Including guide pin bushing, self- steering welding pressing and buffer unit, institute
Guide pin bushing is stated for hollow columnar structures, the guide pin bushing is inserted in one end of the self- steering welding pressing, and the buffer unit is enclosed within institute
State on the outer wall of self- steering welding pressing, and buffer unit is contacted with the end of guide pin bushing, the buffer unit is welded with self- steering
End with pressing, guide pin bushing is relatively fixed, and opens up screw on the side wall of guide pin bushing, and the screw is connected with the hollow cavity of guide pin bushing
Logical, holding screw screws in the screw, to be relatively fixed self- steering welding pressing with guide pin bushing, the self-conductance by holding screw
It is column structure to welding pressing, one end of the self- steering welding pressing is used for fixing the self- steering welding pressing, self-conductance
The groove for coordinating is opened up with circular arc welding to the end of the other end of welding pressing.
5. self- steering welding as claimed in claim 4 is reformed mechanism, it is characterised in that：The self- steering welding pressing and circular arc
Thickness of the distance between the bottom surface in face welding contact direction and cell piece more than the welding tin coating of twice.
6. a kind of series welding head, it is characterised in that：Reform mechanism including bonding tip seat and the self- steering welding that is fixed on bonding tip seat,
Open up some confession self- steering weldings to reform the passage that mechanism passes through on bonding tip seat, some self- steering weldings are reformed mechanism's difference
Insert the passage, and the self- steering welding mechanism that reforms is relatively fixed with bonding tip seat, the self- steering welding mechanism that reforms includes
Guide pin bushing, self- steering welding pressing and buffer unit, the guide pin bushing is hollow columnar structures, and the guide pin bushing inserts the passage, and
Be relatively fixed with bonding tip seat, the guide pin bushing is inserted in one end of the self- steering welding pressing, the buffer unit be enclosed within described from
It is oriented on the outer wall of welding pressing, and buffer unit contacts with the end of guide pin bushing, the buffer unit and self- steering welding pressure
Pin, the end of guide pin bushing are relatively fixed, and open up screw on the side wall of guide pin bushing, and the screw is connected with the hollow cavity of guide pin bushing, tightly
Determine screw and screw in the screw, self- steering welding pressing is relatively fixed with guide pin bushing by holding screw, the self- steering weldering
Band pressing is column structure, and one end of the self- steering welding pressing is used for fixing the self- steering welding pressing, self- steering weldering
The end of the other end with pressing opens up the groove for coordinating with circular arc welding.
7. series welding head as claimed in claim 6, it is characterised in that：Between the passage and guide pin bushing, anti-rotation structure is set,
And then avoid self- steering welding from reforming the rotation between mechanism and bonding tip seat.
8. a kind of series welding machine, it is characterised in that：Including frame and rack-mounted feeding device, conveying device, ribbon supply cloth
Belting, transmitting device, series welding head and collecting mechanism, the feeding device are used for supplying cell piece, and the conveying device is used for
The cell piece is transmitted, the ribbon supply cloth belting gives the circular arc welding of the main grid wire bonding on cell piece for confession, and
By circular arc welding by the back side and front for being routed to cell piece after predetermined length cut-out, the circular arc is welded by the series welding head
Main grid wire bonding on band and cell piece, forms cell piece string, and the cell piece is transferred to series welding head position by the transmitting device
Put, then cell piece string is transported to collecting mechanism, the series welding head is the series welding head described in the claims 6 or 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710011073.4A CN106493445A (en) | 2017-01-06 | 2017-01-06 | Self- steering welding pressing and self- steering welding are reformed mechanism, series welding head and series welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710011073.4A CN106493445A (en) | 2017-01-06 | 2017-01-06 | Self- steering welding pressing and self- steering welding are reformed mechanism, series welding head and series welding machine |
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| CN106493445A true CN106493445A (en) | 2017-03-15 |
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| CN108637545A (en) * | 2018-06-19 | 2018-10-12 | 无锡先导智能装备股份有限公司 | Welding adjusting apparatus and string welding machine |
| CN110293353A (en) * | 2018-03-22 | 2019-10-01 | 无锡市正罡自动化设备有限公司 | A kind of welding method of string welding machine and solar battery string |
| CN110405303A (en) * | 2018-04-27 | 2019-11-05 | 无锡市正罡自动化设备有限公司 | Welding is reformed mechanism and series welding device and string welding machine and welding welding method |
| CN110405305A (en) * | 2019-08-05 | 2019-11-05 | 无锡奥特维科技股份有限公司 | Pressure exerting arrangement, string welding machine and pressure method |
| CN112059357A (en) * | 2020-08-31 | 2020-12-11 | 晶澳（邢台）太阳能有限公司 | Series welding machine needle pressing mechanism, series welding machine and pressing method thereof |
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| CN110293353B (en) * | 2018-03-22 | 2021-09-03 | 无锡市正罡自动化设备有限公司 | Series welding machine and welding method of solar cell string |
| CN110405303A (en) * | 2018-04-27 | 2019-11-05 | 无锡市正罡自动化设备有限公司 | Welding is reformed mechanism and series welding device and string welding machine and welding welding method |
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| CN108637545B (en) * | 2018-06-19 | 2023-10-24 | 无锡先导智能装备股份有限公司 | Welding strip adjusting device and series welding machine |
| CN110405305A (en) * | 2019-08-05 | 2019-11-05 | 无锡奥特维科技股份有限公司 | Pressure exerting arrangement, string welding machine and pressure method |
| CN112059357A (en) * | 2020-08-31 | 2020-12-11 | 晶澳（邢台）太阳能有限公司 | Series welding machine needle pressing mechanism, series welding machine and pressing method thereof |
| CN112059357B (en) * | 2020-08-31 | 2021-11-16 | 晶澳（邢台）太阳能有限公司 | Series welding machine needle pressing mechanism, series welding machine and pressing method thereof |
| CN113070544A (en) * | 2021-05-12 | 2021-07-06 | 杭州瞩日能源科技有限公司 | Welding pin structure and welding method |
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Application publication date: 20170315 |