CN108465913A - The working method of accurate plug-type wire feeder - Google Patents
The working method of accurate plug-type wire feeder Download PDFInfo
- Publication number
- CN108465913A CN108465913A CN201810244814.8A CN201810244814A CN108465913A CN 108465913 A CN108465913 A CN 108465913A CN 201810244814 A CN201810244814 A CN 201810244814A CN 108465913 A CN108465913 A CN 108465913A
- Authority
- CN
- China
- Prior art keywords
- steel ball
- wire feed
- cam
- feed chuck
- speed
- 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.)
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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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
- B23K9/1336—Driving means
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
Abstract
The invention discloses a kind of working methods of precisely plug-type wire feeder, and the precisely plug-type wire feeder includes a double-crankshaft, and one end of axis is connect with motor, and there are two cam A eccentric in the same direction and cam B on axis.The eccentric arm of cam A is r1, the eccentric arm of cam B is r2, r1≠r2, two or more three steel balls wire feed chucks are front and back to arrange and is connected respectively from cam A and the different movable rods of cam B；When motor rotates, eccentric cam rotates, and each three steel balls wire feed chuck is made under the support of different movable rods and eccentric synchronous back-and-forth motion respectively.Product structure of the present invention is reasonable, has low cost, high reliability.
Description
The application is application number：201610512386.3, the applying date：2016-07-04, title " precisely plug-type wire feed dress
Set " divisional application.
Technical field
The present invention relates to a kind of working methods of plug-type wire feeder.
Background technology
Gas shielded arc welding（Abbreviation gas shield welding）High, the at low cost, low power consumption and other advantages with production efficiency, in production practice
It is widely used.Meanwhile gas shield welding the shortcomings of that there is also spatters is unstable, appearance of weld deviation.In order to reduce gas shield welding
Spatter loss coefficient, improve weldquality, it is necessary to allow the gas shield welding droplet transfer to become regular.Realizing the most effective approach of this point is
Change the continuous wire feeding mode of traditional constant speed, that is, uses push-pull wire feeding.
Push-pull wire feeding refers to suitable in wire feed step pitch and push-and-pull frequency, and the droplet transfer in gas shield welding changes
Scrambling when fast wire feed and become " molten drop of step one ", i.e., be sent into every time and all cause first short circuit transition, the frequency of transition
Equal to the frequency of push-pull wire feeding.Due to the critical short-circuit condition of moment（Like the non-shorting state of short circuit）In the force effect of pulling back of machinery
Under so that electric arc forms stable molten drop, and has regularly been transitioned into molten bath, has reached the welding effect entirely without splashing
Fruit.Using plug-type wire feeding mode, i.e., " advance-rollback-advance-rollback "（The displacement of advance is more than the displacement to retract
Amount）, current foreign countries can only utilize high performance servo motor（High-frequency rotates and reverse alternate run）It realizes.Using servo motor
This mode realized is at high price, it is difficult to realize market extensive use.
Has the push-pull wire feeding device of welding wire " advance-rollback-advance-rollback " function, core component is one kind three
Steel ball wire feed chuck（Shown in Fig. 1）.This collet is mainly led by cylinder casing 1, tapered sleeve 2, spring 3, steel ball retainer 4, welding wire
Fiber tube 5, steel ball 6 are constituted.The essential characteristic of this collet：Collet is fixed, and when welding wire moves forward, three steel balls are pushed away
It opens.It due to the effect of spring, is not totally released between welding wire and three steel balls, but there is sliding appropriate（Or it rolls）It rubs
Wipe power；When welding wire moves backward, three steel balls step up welding wire automatically, generate huge stiction, collet have " welding wire from
Lock " function.
To realize push-pull wire feeding function, high performance servo is far smaller than used using the cost of mechanical push-pull wire feeding device
The cost of motor.It welds market especially industrial robot and welds market, a kind of welding wire that has of low cost of urgent need " advances-returns
Move back-advance-retract " the accurate plug-type wire feeder of function.
Invention content
The purpose of the present invention is to provide a kind of reasonable for structure, low cost, high reliability have " one send one time " function
Accurate plug-type wire feeder working method.
Technical solution of the invention is：
A kind of precisely plug-type wire feeder, it is characterized in that：Including a double-crankshaft, one end of axis connect with motor, has on axis
Two eccentric cam A and cam B in the same direction.The eccentric arm of cam A is r1, the eccentric arm of cam B is r2, r1≠r2, two
Or it arranges before and after multiple three steel balls wire feed chucks and is connected respectively from cam A and the different movable rods of cam B；When motor turns
Dynamic, eccentric cam rotates, and each three steel balls wire feed chuck is made under the support of different movable rods synchronous with bias respectively
It is moved forward and backward；
The three steel balls wire feed chuck includes cylinder casing, and ball retainer, ball retainer front end dress are arranged in cylinder casing
Resetting spring is arranged on ball retainer in three steel ball mechanisms, on the inside of cylinder casing, setting and three steel balls on the outside of three steel ball mechanisms
Mechanism contacts, the tapered sleeve that steel ball is limited, and the internal diameter small end of tapered sleeve is located at rear side, tapered sleeve big end is located at front side；Steel ball
Welding wire wire leading pipe is set in retainer.
The eccentric arm of the eccentric arm ＞ cams B of cam A.
The course of work：
When forward travel, double-crankshaft positive direction rotates 180 degree, and cam A drives the one or three steel ball wire feed chuck to move forward 2 r1
Displacement, cam B drives the two or three steel ball wire feed chuck to move forward 2 r2Displacement；Due to r1＞ r2, so the one or three
The speed that steel ball wire feed chuck moves forward is more than the speed that the two or three steel ball wire feed chuck moves forward, the one or three steel ball wire feed
Three steel ball Automatic-clamping welding wires of collet, generate huge stiction, the one or three steel ball wire feed chuck has welding wire self-locking
Function, the speed that welding wire moves forward is equal to the speed that the one or three steel ball wire feed chuck moves forward, and welding wire moves forward
Displacement be equal to the one or three steel ball wire feed chuck move forward 2 r of displacement1；Forward due to the two or three steel ball wire feed chuck
Movement speed is less than the speed that welding wire moves forward, and three of them steel ball is open and makees sliding in welding wire surface or roll fortune
Dynamic, the two or three steel ball wire feed chuck does sliding motion on welding wire；
When setback, double-crankshaft negative direction rotates 180 degree, and cam A drives the one or three steel ball wire feed chuck to move backward 2 r1
Displacement, cam B drives the two or three steel ball wire feed chuck to move backward 2 r2Displacement；Due to r1＞ r2, so the one or three
The speed that steel ball wire feed chuck moves backward is more than the speed that the two or three steel ball wire feed chuck moves backward, the two or three steel ball wire feed
Three steel balls of collet step up welding wire automatically, generate stiction, and the two or three steel ball wire feed chuck has welding wire self-locking function, weld
The speed that silk moves backward is equal to the speed that the two or three steel ball wire feed chuck moves backward, and the displacement that welding wire moves backward
2 r of displacement moved backward equal to the two or three steel ball wire feed chuck2；Since the one or three steel ball wire feed chuck moves backward speed
More than the speed that welding wire moves backward, three of them steel ball be open and welding wire surface make sliding or rolling movement, the one or three
Steel ball wire feed chuck does sliding motion on welding wire.
Structure of the invention is reasonable, has low cost, high reliability；Welding wire may be implemented and make " advance-rollback-advance-
The push-and-pull campaign of rollback ".The regularity of push-pull wire feeding makes the gas shield welding droplet transfer become regular.In welding wire " rollback " process
In, electric arc moment quickly pulls back, and pulls open arc length again, and welding head is made to form molten drop, and then welding wire is quick " advance ", by molten drop
Pressure is pressed into molten bath and completes short circuiting transfer, and this enforceable short circuiting transfer mode can be helped efficiently against spot pressure
Molten drop can smoothly enter into molten bath, therefore splashes and substantially reduce, and reach the state almost without splashing.It is controlled due to splashing, so that it may
To properly increase arc voltage, such appearance of weld also be improved significantly.Meanwhile reduction splashing decreases torch nozzle and blocks up
The probability of plug greatly reduces the live load of welding labour, improves welding efficiency, especially meet what robot precisely welded
It is required that.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of three steel ball wire feed chucks.
Fig. 2 is the A-A views of Fig. 1.
Fig. 3 is the structural schematic diagram of one embodiment of the invention.
Fig. 4 is the different working condition schematic diagram of the embodiment of the present invention.
Specific implementation mode
A kind of precisely plug-type wire feeder, an including double-crankshaft 7, one end of axis connect with motor 8, on axis there are two
Eccentric cam A and cam B in the same direction.The eccentric arm of cam A is r1, the eccentric arm of cam B is r2, r1≠r2, two or more
A three steel balls wire feed chuck is front and back to arrange and is connected respectively from cam A and cam B different movable rods 9,10；Movable rod
Quantity it is unrestricted.When motor rotates, eccentric cam rotates, and each three steel balls wire feed chuck is respectively in different movable rods
Support under make and eccentric synchronous back-and-forth motion, twice of the distance of back-and-forth motion equal to eccentric arm；
The three steel balls wire feed chuck includes cylinder casing 1, and ball retainer 4, ball retainer front end is arranged in cylinder casing
Three steel ball mechanisms are filled, resetting spring 3 is set on ball retainer, on the inside of cylinder casing, setting and three on the outside of three steel ball mechanisms
Steel ball mechanism contacts, the tapered sleeve 2 that steel ball 6 is limited, and the internal diameter small end of tapered sleeve is located at rear side, before tapered sleeve big end is located at
Side；Welding wire wire leading pipe 4 is set in ball retainer.
By taking collet C as an example, when the speed that collet moves forward is more than the speed that welding wire moves forward, three steel balls add automatically
Tight welding wire generates huge stiction, and collet has " welding wire self-locking " function, then the forward displacement of welding wire is equal to collet
Forward displacement；When collet move forward speed be less than welding wire move forward speed, three steel balls be open and
Welding wire surface makees sliding or rolling movement, collet do sliding motion on welding wire 11, then the forward displacement of welding wire depends on
The speed and time that welding wire moves forward.
With collet C（That is the two or three steel ball wire feed chuck）For, when the speed that collet moves backward is moved back more than welding wire
Dynamic speed, three steel balls are open.It due to the effect of spring, is not totally released, but has between welding wire and three steel balls
There is sliding appropriate（Or it rolls）Frictional force, welding wire surface make sliding or rolling movement；Collet does sliding motion on welding wire, that
The displacement of welding wire backward depends on the speed and time that welding wire moves backward；When the speed that collet moves backward is less than welding wire
The speed moved backward, three steel balls step up welding wire automatically, generate huge stiction, and collet has " welding wire self-locking " work(
Can, then the displacement of welding wire backward is equal to the displacement of collet backward.
There is jaw guide 12 in Fig. 3, Fig. 4, each three steel balls wire feed chuck is made to move along the rail.
The implementation process of the present invention mutually converts gained by the state of Fig. 3 and Fig. 4.
Assuming that r1＞ r2：
Double-crankshaft rotates 180 degree to the state of Fig. 4, cam A drive collets D from the state of Fig. 3（That is the one or three steel ball wire feed presss from both sides
Head）Move forward 2 r1Displacement, cam B drives collet C to move forward 2 r2Displacement.Due to r1＞ r2, so collet
The speed that D is moved forward is more than the speed that collet C is moved forward, and three steel balls of collet D step up welding wire, generate huge automatically
Stiction, collet D have " welding wire self-locking " function, and the speed that welding wire moves forward is equal to the speed that collet D is moved forward, and
And the displacement that welding wire moves forward is equal to 2 r of displacement that collet D is moved forward1.It is less than since collet C moves forward speed
The speed that welding wire moves forward, three steel balls are open and make sliding or rolling movement in welding wire surface, and collet C is on welding wire
Do sliding motion.
State of the double-crankshaft from the state of Fig. 4 rotation 180 degree to Fig. 3, cam A drive collet D to move backward 2 r1Position
Shifting amount, cam B drive collet C to move backward 2 r2Displacement.Due to r1＞ r2, so the speed that collet D is moved backward is more than
The speed that collet C is moved backward, three steel balls of collet C step up welding wire automatically, generate stiction, collet C have " welding wire from
Lock " function, the speed that welding wire moves backward are equal to the speed that collet C is moved backward, and the displacement etc. that welding wire moves backward
In 2 r of displacement that collet C is moved backward2.It is more than the speed that moves backward of welding wire since collet D moves backward speed, three
Steel ball is open and does sliding motion on welding wire in the sliding of welding wire surface work or rolling movement, collet D.
In conclusion from the state of Fig. 3 to the state of Fig. 4, motor drives double-crankshaft to rotate 180 degree, and welding wire moves forward
Displacement be equal to 2 r of displacement that collet D is moved forward1；From the state of Fig. 4 to the state of Fig. 3, motor drives double-crankshaft again
180 degree is rotated, the displacement that welding wire moves backward is equal to 2 r of displacement that collet C is moved backward2.In motor rotates a circle
（360 degree）, welding wire advanced 2 r1, then retracted 2 r2, realize " one send one time " plug-type wire feed function.
Claims (2)
1. a kind of working method of precisely plug-type wire feeder, it is characterized in that：The precisely plug-type wire feeder includes one
One end of root double-crankshaft, axis is connect with motor, and there are two cam A eccentric in the same direction and cam B on axis；The eccentric arm of cam A
For r1, the eccentric arm of cam B is r2, r1≠r2, the front and back arrangement of two or more three steel balls wire feed chucks and respectively with cam A
It is connected with cam B with different movable rods；When motor rotates, eccentric cam rotates, and each three steel balls wire feed chuck exists respectively
Make under the support of different movable rods and eccentric synchronous back-and-forth motion；
The three steel balls wire feed chuck includes cylinder casing, and ball retainer, ball retainer front end dress are arranged in cylinder casing
Resetting spring is arranged on ball retainer in three steel ball mechanisms, on the inside of cylinder casing, setting and three steel balls on the outside of three steel ball mechanisms
Mechanism contacts, the tapered sleeve that steel ball is limited, and the internal diameter small end of tapered sleeve is located at rear side, tapered sleeve big end is located at front side；Steel ball
Welding wire wire leading pipe is set in retainer；
Working method：
When forward travel, double-crankshaft positive direction rotates 180 degree, and cam A drives the one or three steel ball wire feed chuck to move forward 2 r1's
Displacement, cam B drive the two or three steel ball wire feed chuck to move forward 2 r2Displacement；Due to r1＞ r2, so the one or three steel
The speed that ball wire feed chuck moves forward is more than the speed that the two or three steel ball wire feed chuck moves forward, the one or three steel ball wire feed folder
Three steel ball Automatic-clamping welding wires of head, generate huge stiction, the one or three steel ball wire feed chuck has welding wire self-locking work(
Can, welding wire move forward speed be equal to the one or three steel ball wire feed chuck move forward speed, and welding wire move forward
Displacement is equal to 2 r of displacement that the one or three steel ball wire feed chuck moves forward1；Since the two or three steel ball wire feed chuck is to Forward
Dynamic speed is less than the speed that welding wire moves forward, and three of them steel ball is open and makees sliding or rolling movement in welding wire surface,
Two or three steel ball wire feed chuck does sliding motion on welding wire；
When setback, double-crankshaft negative direction rotates 180 degree, and cam A drives the one or three steel ball wire feed chuck to move backward 2 r1's
Displacement, cam B drive the two or three steel ball wire feed chuck to move backward 2 r2Displacement；Due to r1＞ r2, so the one or three steel
The speed that ball wire feed chuck moves backward is more than the speed that the two or three steel ball wire feed chuck moves backward, the two or three steel ball wire feed folder
Three steel balls of head step up welding wire automatically, generate stiction, and the two or three steel ball wire feed chuck has welding wire self-locking function, welding wire
The speed moved backward is equal to the speed that the two or three steel ball wire feed chuck moves backward, and the displacement etc. that welding wire moves backward
In 2 r of displacement that the two or three steel ball wire feed chuck moves backward2；Since to move backward speed big for the one or three steel ball wire feed chuck
In the speed that welding wire moves backward, three of them steel ball is open and makees sliding or rolling movement, the one or three steel in welding wire surface
Ball wire feed chuck does sliding motion on welding wire.
2. the working method of precisely plug-type wire feeder according to claim 1, it is characterized in that：Eccentric the half of cam A
The eccentric arm of diameter ＞ cams B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810244814.8A CN108465913B (en) | 2016-07-04 | 2016-07-04 | The working method of accurate plug-type wire feeder |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810244814.8A CN108465913B (en) | 2016-07-04 | 2016-07-04 | The working method of accurate plug-type wire feeder |
| CN201610512386.3A CN105945400B (en) | 2016-07-04 | 2016-07-04 | Accurate plug-type wire feeder |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610512386.3A Division CN105945400B (en) | 2016-07-04 | 2016-07-04 | Accurate plug-type wire feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108465913A true CN108465913A (en) | 2018-08-31 |
| CN108465913B CN108465913B (en) | 2019-07-16 |
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ID=56903117
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610512386.3A Active CN105945400B (en) | 2016-07-04 | 2016-07-04 | Accurate plug-type wire feeder |
| CN201810244814.8A Active CN108465913B (en) | 2016-07-04 | 2016-07-04 | The working method of accurate plug-type wire feeder |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610512386.3A Active CN105945400B (en) | 2016-07-04 | 2016-07-04 | Accurate plug-type wire feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105945400B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111975177A (en) * | 2020-05-07 | 2020-11-24 | 哈尔滨瀚德机器人科技有限公司 | Wire feeding device for automatic TIG welding |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160074B (en) * | 2017-07-30 | 2019-04-16 | 合肥杰代机电科技有限公司 | A kind of Full-automatic welding machine tool equipment suitable for large-scale workshop |
| CN111904550B (en) * | 2020-07-28 | 2021-11-02 | 徐州市中心医院 | Miniature adjustable automatic puncture device suitable for subcutaneous deep anesthesia puncture |
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| CN2185176Y (en) * | 1993-10-05 | 1994-12-14 | 郑宝英 | Impulse wire feeder for welding |
| US6019303A (en) * | 1998-12-16 | 2000-02-01 | Lincoln Global, Inc. | Method and apparatus for packing wire in a storage drum |
| CN1464808A (en) * | 2001-07-30 | 2003-12-31 | 松下电器产业株式会社 | Welding wire feeder |
| CN2753497Y (en) * | 2004-12-07 | 2006-01-25 | 南通振康焊接机电有限公司 | Double-driving aligning and wire-feeding device |
| CN101733521A (en) * | 2009-12-11 | 2010-06-16 | 杭州凯尔达电焊机有限公司 | Double eccentric wheel type push-pull pulsed wire feeding method and device |
| CN101733520A (en) * | 2009-12-11 | 2010-06-16 | 杭州凯尔达电焊机有限公司 | Push-pull pulsed wire feeding device |
| CN102962555A (en) * | 2012-11-22 | 2013-03-13 | 南通贝思特科技咨询有限公司 | Welding-wire push-pull feeding device |
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|---|---|---|---|---|
| CN1185072C (en) * | 2000-07-29 | 2005-01-19 | 孙子建 | Pulsating type weld wire feeding mechanism |
| KR100546895B1 (en) * | 2003-12-11 | 2006-01-31 | (주)태신 지 엔 더블류 | A wire feeder |
| CN205869668U (en) * | 2016-07-04 | 2017-01-11 | 南通振康焊接机电有限公司 | Accurate plug -type wire drive feed unit |
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- 2016-07-04 CN CN201610512386.3A patent/CN105945400B/en active Active
- 2016-07-04 CN CN201810244814.8A patent/CN108465913B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB391743A (en) * | 1932-01-23 | 1933-05-04 | British Thomson Houston Co Ltd | Improvements in and relating to electric arc welding apparatus |
| CN2185176Y (en) * | 1993-10-05 | 1994-12-14 | 郑宝英 | Impulse wire feeder for welding |
| US6019303A (en) * | 1998-12-16 | 2000-02-01 | Lincoln Global, Inc. | Method and apparatus for packing wire in a storage drum |
| CN1464808A (en) * | 2001-07-30 | 2003-12-31 | 松下电器产业株式会社 | Welding wire feeder |
| CN2753497Y (en) * | 2004-12-07 | 2006-01-25 | 南通振康焊接机电有限公司 | Double-driving aligning and wire-feeding device |
| CN101733521A (en) * | 2009-12-11 | 2010-06-16 | 杭州凯尔达电焊机有限公司 | Double eccentric wheel type push-pull pulsed wire feeding method and device |
| CN101733520A (en) * | 2009-12-11 | 2010-06-16 | 杭州凯尔达电焊机有限公司 | Push-pull pulsed wire feeding device |
| CN102962555A (en) * | 2012-11-22 | 2013-03-13 | 南通贝思特科技咨询有限公司 | Welding-wire push-pull feeding device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111975177A (en) * | 2020-05-07 | 2020-11-24 | 哈尔滨瀚德机器人科技有限公司 | Wire feeding device for automatic TIG welding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105945400A (en) | 2016-09-21 |
| CN108465913B (en) | 2019-07-16 |
| CN105945400B (en) | 2018-06-05 |
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