CN108714761A - Whole decorative pattern vehicle-carrying plate welding tooling - Google Patents
Whole decorative pattern vehicle-carrying plate welding tooling Download PDFInfo
- Publication number
- CN108714761A CN108714761A CN201810906398.3A CN201810906398A CN108714761A CN 108714761 A CN108714761 A CN 108714761A CN 201810906398 A CN201810906398 A CN 201810906398A CN 108714761 A CN108714761 A CN 108714761A
- Authority
- CN
- China
- Prior art keywords
- welding
- guide rail
- traversing guide
- trolley
- semi
- 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
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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
-
- 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
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The invention discloses whole decorative pattern vehicle-carrying plate welding toolings, including welding bottom plate, the upper surface both sides of the welding bottom plate are installed with traversing guide rail, positioned at the installation of the side of two traversing guide rails, there are two cooled coppers for the upper surface of the welding bottom plate, two milling water-cooling grooves are formed between two cooled coppers, it is placed with water cooled pipeline in the milling water-cooling groove, the upper end of the Mobile mounting rack is fixedly welded with cylinder mount frame, the upper end of the cylinder mount frame is installed with fixed cylinder, the upper surface of the flange beam stand is equipped with trolley track, semi-automatic welding trolley is movably installed on the trolley track, the side of the semi-automatic welding trolley is equipped with straight line welding gun；The welding tooling realizes machinery positioning, and positioning accuracy is high, and semi-automatic welding effectively raises welding efficiency completely instead of being positioned manually and welding；And cooling velocity is effectively accelerated, improve the quality of decorative pattern vehicle-carrying plate after welding.
Description
Technical field
The present invention relates to welding tooling technical field, specially whole decorative pattern vehicle-carrying plate welding tooling.
Background technology
At present for intelligent stereo garage entirety decorative pattern vehicle-carrying plate splicing regions, stitched in entirety diamond plate vehicle-carrying plate in the past
Welding can only be used and is positioned manually and manual welding, have the shortcomings that welding efficiency is slow and positioning accuracy is low, and cooling velocity
Slowly, cooling effect is poor, easily lead to welding after temperature distortion, to reduce welding after decorative pattern vehicle-carrying plate quality；For this purpose, we carry
Go out a kind of whole decorative pattern vehicle-carrying plate welding tooling.
Invention content
It is mentioned above in the background art to solve the purpose of the present invention is to provide whole decorative pattern vehicle-carrying plate welding tooling
Problem.
To achieve the above object, the present invention provides the following technical solutions：Whole decorative pattern vehicle-carrying plate welding tooling, including welding
The upper surface both sides of bottom plate, the welding bottom plate are installed with traversing guide rail, and one end of the traversing guide rail all extends to
The outside of bottom plate is welded, and traversing guide rail is supported on the ground by guide supporting foot positioned at one end of welding plate outer side,
It is both provided with Mobile mounting rack above two traversing guide rails, the lower end of the Mobile mounting rack is mounted on scroll wheel,
The scroll wheel is installed on traversing guide rail, and the side that the upper surface for welding bottom plate is located at two traversing guide rails is equipped with
Two cooled coppers form two milling water-cooling grooves between two cooled coppers, water cooled pipeline are placed in the milling water-cooling groove,
The upper end of the Mobile mounting rack is fixedly welded with cylinder mount frame, and the upper end of the cylinder mount frame is installed with
Determine cylinder, the output end of the fixed cylinder runs through cylinder mount frame and Mobile mounting rack and is connected with presser feet, two presser feets
The both ends of cooled copper are located at, the side of the Mobile mounting rack is provided with flange beam stand, and flange beam stand and two
It is to be welded and fixed between a Mobile mounting rack, the upper surface of the flange beam stand is equipped with trolley track, the small track
Semi-automatic welding trolley is movably installed on road, the side of the semi-automatic welding trolley is equipped with straight line welding gun, the straight line
The side of the top of two cooled coppers of lower end face of welding gun, the flange beam stand is equipped with bus-bars, the bus-bars
In be connected with power cord, one end of power cord is electrically connected with semi-automatic welding trolley, and the other end of power cord is connected with power supply.
Preferably, the traversing guide rail is disposed as inverted " t " word shape, the rolling being located at below the same Mobile mounting rack
Wheel is both provided with two groups, and every group of quantity is two, and the gap between corresponding two scroll wheels is stuck in the upper of traversing guide rail
On square protrusive board, and the lower end of two scroll wheels is fitted in the upper surface both sides of traversing guide rail respectively.
Preferably, the cylinder mount frame is in that form of an inverted " u " is arranged, and the transverse slat four corners of the cylinder mount frame are opened
Equipped with bolt hole I, the outside lower end of the fixed cylinder is arranged that there are one rectangular mounting plate, the quadrangles of the rectangular mounting plate
Place offers bolt hole II, and the rectangular mounting plate is bonded with the transverse slat of cylinder mount frame, and four bolt hole II and four
A bolt hole I is overlapped, and is locked by bolt in corresponding bolt hole II and bolt hole I.
Preferably, the upper end of the semi-automatic welding trolley is installed with electric welding machine, the semi-automatic welding trolley
Side is installed with welding gun fixing mount, and the welding gun fixing mount fixes straight line welding gun, and straight line welding gun is perpendicular to ground, institute
Straight line welding gun is stated to connect with electric welding machine.
Compared with prior art, the beneficial effects of the invention are as follows：Structure of the invention reasonable design, the entirety decorative pattern vehicle-carrying plate
Welding tooling, it would be desirable to which the diamond plate of welding is placed on the both sides of two pieces of cooled coppers, and weld seam is in an intermediate position, and it is solid to start both sides
Determine cylinder so that the presser feet of fixed cylinder output end is moved up and down pushes down fixation by diamond plate, and semi-automatic welding trolley can be
Move back and forth on trolley track, straight line welding gun is driven to weld diamond plate, which integrally can also come on traversing guide rail
Return is dynamic and adjusts, and facilitates lifting workpiece, which realizes machinery positioning, and positioning accuracy is high, semi-automatic welding, completely
Instead of being positioned manually and welding, welding efficiency is effectively raised；Pass through two pieces of cooled coppers of setting, two pieces of cooled coppers
Between milling water-cooling groove directly weld seam can be cooled down, effectively accelerate cooling velocity, improve welding after decorative pattern carry
The quality of sweep.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is structure of the invention exploded perspective view.
In figure：Weld bottom plate 1, traversing guide rail 2, guide supporting foot 3, Mobile mounting rack 4, scroll wheel 5, flange beam stand 6,
Trolley track 7, semi-automatic welding trolley 8, straight line welding gun 9, cooled copper 10, milling water-cooling groove 11, fixed cylinder 12, cylinder installation
Frame 13, bus-bars 14.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the present invention provides a kind of technical solution：Whole decorative pattern vehicle-carrying plate welding tooling, including welding bottom
The upper surface both sides of plate 1, welding bottom plate 1 are installed with traversing guide rail 2, and one end of traversing guide rail 2 all extends to welding bottom
The outside of plate 1, and traversing guide rail 2 is located at one end on the outside of welding bottom plate 1 and is supported on the ground by guide supporting foot 3, two
The top of a traversing guide rail 2 is both provided with Mobile mounting rack 4, and the lower end of Mobile mounting rack 4 is mounted on scroll wheel 5, scroll wheel 5
It is installed on traversing guide rail 2, scroll wheel 5 can move back and forth on traversing guide rail 2, and traversing guide rail 2 is disposed as inverted " t " font
Shape, the scroll wheel 5 positioned at the lower section of the same Mobile mounting rack 4 are both provided with two groups, and every group of quantity is two, and corresponding two
Gap between a scroll wheel 5 is stuck on the top protrusive board of traversing guide rail 2, and the lower end of two scroll wheels 5 is fitted in cross respectively
The upper surface both sides of guide rail 2 are moved, there are two cooling copper positioned at the installation of the side of two traversing guide rails 2 for the upper surface of welding bottom plate 1
Plate 10 forms two milling water-cooling grooves 11 between two cooled coppers 10, and water cooled pipeline, mobile peace are placed in milling water-cooling groove 11
The upper end for shelving 4 is fixedly welded with cylinder mount frame 13, and the upper end of cylinder mount frame 13 is installed with fixed cylinder 12,
Cylinder mount frame 13 is in that form of an inverted " u " is arranged, and the transverse slat four corners of cylinder mount frame 13 offer bolt hole I, fixed gas
The outside lower end of cylinder 12 is arranged there are one rectangular mounting plate, and the four corners of rectangular mounting plate offer bolt hole II, rectangle
Mounting plate is bonded with the transverse slat of cylinder mount frame 13, and four bolt hole II are overlapped with four bolt hole I, corresponding bolt hole
It is locked by bolt in II and bolt hole I, the output end of fixed cylinder 12 runs through cylinder mount frame 13 and Mobile mounting rack 4
And it is connected with presser feet, two presser feets are located at the both ends of cooled copper 10, and the side of Mobile mounting rack 4 is provided with I-steel branch
Frame 6, and be to be welded and fixed between flange beam stand 6 and two Mobile mounting racks 4, the upper surface of flange beam stand 6 is equipped with
Trolley track 7 is movably installed with semi-automatic welding trolley 8 on trolley track 7, and the side of semi-automatic welding trolley 8 is equipped with directly
Wire bonding rifle 9, the main driving source for driving straight line welding gun 9 to carry out welding action of semi-automatic welding trolley 8, semi-automatic welding trolley 8
Upper end be installed with electric welding machine, the side of semi-automatic welding trolley 8 is installed with welding gun fixing mount, and welding gun fixing mount will
Straight line welding gun 9 is fixed, and straight line welding gun 9, perpendicular to ground, straight line welding gun 9 is connect with electric welding machine, the lower end face of straight line welding gun 9
The side of the top of two cooled coppers 10, flange beam stand 6 is equipped with bus-bars 14, and power cord is connected in bus-bars 14, electricity
One end of source line is electrically connected with semi-automatic welding trolley 8, and the other end of power cord is connected with power supply.
The entirety decorative pattern vehicle-carrying plate welding tooling is at work, it would be desirable to which the diamond plate of welding is placed on two pieces of cooled coppers 10
Both sides, weld seam is in an intermediate position, starts both sides and fixes cylinder 12 so that the presser feet of fixed 12 output end of cylinder moves up and down
Diamond plate is pushed down into fixation, semi-automatic welding trolley 8 can move back and forth on trolley track 7, drive straight line welding gun 9 to decorative pattern
Plate is welded, which integrally also can move back and forth and adjust on traversing guide rail 2, facilitate lifting workpiece, and when welding will protect
Straight line welding gun 9 is demonstrate,proved in the centre position of decorative pattern vehicle-carrying plate, welding is welded according to plate thickness adjustment Current Voltage from initial position
It connects, blanking is carried out after the completion of welding, tooling function is completed；The welding tooling realizes machinery positioning, and positioning accuracy is high, semi-automatic
Welding, completely instead of being positioned manually and welding, effectively raises welding efficiency；By two pieces of cooled coppers 10 of setting,
Milling water-cooling groove 11 between two pieces of cooled coppers 10 can directly cool down weld seam, effectively accelerate cooling velocity, carry
The quality of decorative pattern vehicle-carrying plate after high welding.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. whole decorative pattern vehicle-carrying plate welding tooling, including welding bottom plate（1）, it is characterised in that：The welding bottom plate（1）Upper table
Face both sides are installed with traversing guide rail（2）, the traversing guide rail（2）One end all extend to welding bottom plate（1）Outside,
And traversing guide rail（2）Positioned at welding bottom plate（1）The one end in outside passes through guide supporting foot（3）It supports on the ground, two institutes
State traversing guide rail（2）Top be both provided with Mobile mounting rack（4）, the Mobile mounting rack（4）Lower end be mounted on rolling
Wheel（5）, the scroll wheel（5）It is installed in traversing guide rail（2）On, the welding bottom plate（1）Upper surface be located at two it is traversing
Guide rail（2）Side installation there are two cooled copper（10）, two cooled coppers（10）Between formed two milling water-cooling grooves（11）,
The milling water-cooling groove（11）In be placed with water cooled pipeline, the Mobile mounting rack（4）Upper end be fixedly welded with cylinder peace
It shelves（13）, the cylinder mount frame（13）Upper end be installed with fixed cylinder（12）, the fixed cylinder（12）'s
Output end runs through cylinder mount frame（13）And Mobile mounting rack（4）And it is connected with presser feet, two presser feets are located at cooling copper
Plate（10）Both ends, the Mobile mounting rack（4）Side be provided with flange beam stand（6）, and flange beam stand（6）With two
Mobile mounting rack（4）Between be to be welded and fixed, the flange beam stand（6）Upper surface trolley track is installed（7）, described
Trolley track（7）On be movably installed with semi-automatic welding trolley（8）, the semi-automatic welding trolley（8）Side be equipped with directly
Wire bonding rifle（9）, the straight line welding gun（9）Two cooled coppers of lower end face（10）Top, the flange beam stand（6）'s
Side is equipped with bus-bars（14）, the bus-bars（14）In be connected with power cord, one end and the semi-automatic welding trolley of power cord
（8）Electrical connection, the other end of power cord are connected with power supply.
2. entirety decorative pattern vehicle-carrying plate welding tooling according to claim 1, it is characterised in that：The traversing guide rail（2）?
It is set as inverted " t " word shape, is located at the same Mobile mounting rack（4）The scroll wheel of lower section（5）Two groups are both provided with, every group of number
Amount is two, corresponding two scroll wheels（5）Between gap be stuck in traversing guide rail（2）Top protrusive board on, and two rolling
Driving wheel（5）Lower end be fitted in traversing guide rail respectively（2）Upper surface both sides.
3. entirety decorative pattern vehicle-carrying plate welding tooling according to claim 1, it is characterised in that：The cylinder mount frame（13）
It is in that form of an inverted " u " is arranged, the cylinder mount frame（13）Transverse slat four corners offer bolt hole I, the fixed cylinder
（12）Outside lower end be arranged there are one rectangular mounting plate, the four corners of the rectangular mounting plate offer bolt hole II,
The rectangular mounting plate is and cylinder mount frame（13）Transverse slat fitting, and four bolt hole II are overlapped with four bolt hole I, right
It is locked by bolt in the bolt hole II and bolt hole I that answer.
4. entirety decorative pattern vehicle-carrying plate welding tooling according to claim 1, it is characterised in that：The semi-automatic welding trolley
（8）Upper end be installed with electric welding machine, the semi-automatic welding trolley（8）Side be installed with welding gun fixing mount, institute
Welding gun fixing mount is stated by straight line welding gun（9）It is fixed, and straight line welding gun（9）Perpendicular to ground, the straight line welding gun（9）With electric welding machine
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810906398.3A CN108714761A (en) | 2018-08-10 | 2018-08-10 | Whole decorative pattern vehicle-carrying plate welding tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810906398.3A CN108714761A (en) | 2018-08-10 | 2018-08-10 | Whole decorative pattern vehicle-carrying plate welding tooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108714761A true CN108714761A (en) | 2018-10-30 |
Family
ID=63914434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810906398.3A Pending CN108714761A (en) | 2018-08-10 | 2018-08-10 | Whole decorative pattern vehicle-carrying plate welding tooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108714761A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057221A (en) * | 2014-07-11 | 2014-09-24 | 威海永崮耐磨制品有限公司 | Water cooling device for abrasion-resistant plate surface welding machine |
| CN205702971U (en) * | 2016-04-28 | 2016-11-23 | 上海鼎经自动化科技有限公司 | Middle seam welding running gear |
| CN107639365A (en) * | 2017-10-13 | 2018-01-30 | 浙江顺得机械有限公司 | Semiautomatic welding device |
| CN107931897A (en) * | 2017-11-28 | 2018-04-20 | 中车长春轨道客车股份有限公司 | For cooling down the device of mother metal near weld seam |
| CN108098121A (en) * | 2018-01-25 | 2018-06-01 | 珠海格力电器股份有限公司 | Welding backing plate device |
| CN208825896U (en) * | 2018-08-10 | 2019-05-07 | 中泊科技有限公司 | Whole decorative pattern vehicle-carrying plate welding tooling |
-
2018
- 2018-08-10 CN CN201810906398.3A patent/CN108714761A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057221A (en) * | 2014-07-11 | 2014-09-24 | 威海永崮耐磨制品有限公司 | Water cooling device for abrasion-resistant plate surface welding machine |
| CN205702971U (en) * | 2016-04-28 | 2016-11-23 | 上海鼎经自动化科技有限公司 | Middle seam welding running gear |
| CN107639365A (en) * | 2017-10-13 | 2018-01-30 | 浙江顺得机械有限公司 | Semiautomatic welding device |
| CN107931897A (en) * | 2017-11-28 | 2018-04-20 | 中车长春轨道客车股份有限公司 | For cooling down the device of mother metal near weld seam |
| CN108098121A (en) * | 2018-01-25 | 2018-06-01 | 珠海格力电器股份有限公司 | Welding backing plate device |
| CN208825896U (en) * | 2018-08-10 | 2019-05-07 | 中泊科技有限公司 | Whole decorative pattern vehicle-carrying plate welding tooling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110948093A (en) | Automatic welding device for straight welding seams on two sides of automobile rear axle housing | |
| CN111889973B (en) | Nondestructive welding process for tooth-shaped multi-pole points of energy-saving bridge | |
| CN111889867B (en) | Automatic resistance welding equipment in duplex position | |
| CN208825896U (en) | Whole decorative pattern vehicle-carrying plate welding tooling | |
| CN108714761A (en) | Whole decorative pattern vehicle-carrying plate welding tooling | |
| CN102799078A (en) | Auxiliary device achieving identical exposure on both sides of PCB and method | |
| CN211680470U (en) | Box type automatic welding equipment | |
| CN205645933U (en) | Electric vehicle battery support | |
| CN108296613A (en) | A kind of workpiece positioning auxiliary device for thin plate splicing submerged arc welding machine | |
| CN208646067U (en) | Automobile primary carpet Suppression of High-frequency Welding Devices | |
| CN217571610U (en) | Arch frame connecting, welding and positioning device | |
| CN205293898U (en) | High flexibility anchor clamps auto -change over device | |
| CN209424724U (en) | A kind of gantry welding assembly unit | |
| CN214024026U (en) | Automatic welding device for bottom steel assembly | |
| CN110605506B (en) | Mechanical arm walking structure of intelligent upright rod welding machine | |
| CN208322545U (en) | Battery modules welding bench | |
| CN102085594A (en) | Automatic netting four-taper-sleeve welding machine and automatic welding method thereof | |
| CN111805098A (en) | Exchange workbench type laser cutting machine | |
| CN112247030A (en) | Butt-joint welding machine | |
| CN215342294U (en) | Pin soldering equipment of high-frequency transformer | |
| CN206445612U (en) | A kind of thin-wall long and thin part processing unit (plant) | |
| CN214518119U (en) | Lifting tool structure of arc welding machine | |
| CN213257653U (en) | Automatic welding equipment for elbow and welding body for transportation equipment | |
| CN220862975U (en) | Supporting device for improving use portability of small submerged arc welding machine | |
| CN216370667U (en) | Steel-aluminum composite contact rail welding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |