CN209477497U - A kind of container lintel automatic welding device of band three-dimensional weld seam recognition - Google Patents
A kind of container lintel automatic welding device of band three-dimensional weld seam recognition Download PDFInfo
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- CN209477497U CN209477497U CN201920072724.5U CN201920072724U CN209477497U CN 209477497 U CN209477497 U CN 209477497U CN 201920072724 U CN201920072724 U CN 201920072724U CN 209477497 U CN209477497 U CN 209477497U
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Abstract
The application provides a kind of container lintel automatic welding device of band three-dimensional weld seam recognition, belongs to welding machine tool or method and technology field.It will be below welded workpiece compression beam and fixed；Guide rail is set above compression beam, achievable four axis mobile welding tractor is installed on guide rail, sweep mechanism and welding gun are set on the welding tractor, the weld seam signal of the sensor detection lower section welding workpiece of sweep mechanism, and signal is passed into central controller, central controller is according to the signal, set the walking path of welding tractor, welding tractor is synchronous with sweep mechanism signal, and accordingly along guide rail do opposite welded workpiece it is real-time before, afterwards, it is left, right and liter, drop movement, after with after position to be welded location matches, welding gun starting on welding tractor, welding sequence is implemented to position to be welded.
Description
Technical field
This application involves a kind of container lintel automatic welding devices of band three-dimensional weld seam recognition, belong to welding machine tool or side
Law technology field.
Background technique
In the welding process, lap weld common are two kinds: lintel welding and the welding of preceding lintel plate, lintel welding is to take
2 fillet welds to be formed are connect, weld length is about 2.1m；Preceding lintel plate welding seams are straight line lap jointing type weld seam, are used in production process
Gas protection welding process.The welding method of two kinds of lap welds at present mostly uses pure artificial or semi-automatic welding, and there are labor
The practical problems such as fatigue resistance is big, welding bead molding effect is unstable, in the welding process, before needing manually to be welded to rifle,
It needs to adjust manually in welding process, it is more demanding to craftsmanship.
Utility model content
In view of this, the application provides a kind of container lintel automatic welding device of band three-dimensional weld seam recognition, which
Welding quality is not only increased, saves manually, can also realize the real-time tracking automatic identification of welding process, without manually to rifle
The working time is saved in automatic operation.
Specifically, the application is realized by following scheme:
A kind of container lintel automatic welding device of band three-dimensional weld seam recognition, will be below welded workpiece compression beam and solid
It is fixed；Guide rail is set above compression beam, achievable four axis mobile welding tractor is installed on guide rail, is arranged on the welding tractor
Sweep mechanism and welding gun, the weld seam signal of the sensor detection lower section welding workpiece of sweep mechanism, and signal is passed into center
Controller, central controller set the walking path of welding tractor according to the signal, and welding tractor and sweep mechanism signal are same
Step, and do the real-time front, rear, left and right of opposite welded workpiece along guide rail accordingly and ascending, descending acts, to position to be welded position
After setting matching, the welding gun on welding tractor starts, i.e., implements welding sequence to position to be welded.
The application carries out weld seam recognition using sweep mechanism and sensor, and the information of identification is converted to signal, in
Automatically tracking in welding process is completed in the driving (such as servo and stepper motor) of centre controller control welding tractor, reaches raising
Welding quality saves artificial purpose.The process descends rifle after not only realizing the automatic identification of weld seam starting point automatically, is not required to very important person
Work is to rifle；In the welding process, identification weld seam is carried out with a distance from welding gun, weld seam left-right position.It also is real time recognition and tracking, section
The about working time；Welding tractor and sweep mechanism cooperate, and realize four axis (time shaft and top to bottom, left and right, front and rear) welding, quickly
Scanning and welding, realize the continuous welding of whole weld seam, and centre is not paused.
Meanwhile applicant is also preferably provided with guide rail, and crossbeam is arranged above the compression beam, guide rail is set to crossbeam
Side or top, to adapt to the installation requirements of different operating conditions respectively.For lintel overlap joint, it is suitble to guide rail being set to cross
Beam side, at this point, guide rail is arranged along the vertical direction, and is preferably respectively set in the two sides of crossbeam, welding tractor and small to weld
The welding gun of vehicle is respectively positioned on crossbeam side for the wire-feed motor of silk；For preceding lintel overlap joint for, the guide rail packet be set to cross rail top and
Side is installed on cross rail top for the wire-feed motor of silk for the welding gun of welding tractor at this point, welding tractor is located at crossbeam side.
Meanwhile applicant is also studied the set-up mode of welding tractor, and determines when it uses and is arranged in pairs, it can
Realize Double-head welding, it is ensured that the working time meets the requirements；It is furthermore preferred that overlapping for lintel, the welding tractor is provided with
Four groups；It is overlapped for preceding lintel, the welding tractor is arranged two groups.Lintel and preceding lintel are suitable for difference to welding process different from
Set-up mode.
On above-mentioned working foundation, applicant has also done further research to specific welding tractor, and is preferably provided with
As follows: the welding tractor further includes having front-and-back adjusting mechanism, height regulating mechanism and left and right adjusting mechanism, and front and back adjusts machine
Structure, height regulating mechanism and left and right adjusting mechanism and sweep mechanism cooperate, and realize that four axis of welding tractor are mobile.It is furthermore preferred that
The welding gun is set to the output end of height regulating mechanism, and front-and-back adjusting mechanism and left and right adjusting mechanism drive welding tractor respectively
And it is mobile around welding gun, height regulating mechanism drives welding gun to do lifting moving.
The sensor is laser sensor IL-300, measures distance 150-450mm, sampling period 0.33/1/2/5ms.
Multiple oil cylinders are arranged towards welded workpiece side in the compression beam, to realize the fixation of welded workpiece.More have
Choosing, in the oil cylinder, oil cylinder placed in the middle is mating to be provided with guide post, realizes that oil cylinder placed in the middle is gone up and down along guide post.
It is provided with hand adjustment cross on the welding gun, is screwed out by the screw-in of hand adjustment cross, realizes welding gun along screw-in rotation
The movement of axis direction out.It is furthermore preferred that the screw-in of two hand adjustment crosses screws out axis point there are two the hand adjustment cross settings
It is not arranged with vertical direction transversely, to realize movement of the welding gun or so with up and down direction.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the application；
Fig. 2 is the side structure schematic diagram of the application；
Fig. 3 is the positive structure schematic of the application；
Fig. 4 is the overlooking state schematic diagram of the application；
Fig. 5 is the partial enlarged view at the position A in Fig. 1.
Figure label: 1. mounting racks；2. crossbeam；21. guide rail；3. welding tractor；3a. welding tractor one；3b. welding tractor
Two；3c. welding tractor three；3d. welding tractor four；31. welding gun；32. front-and-back adjusting mechanism；33. height regulating mechanism；34. left
Right adjustment mechanism；35. gun rack；36. sweep mechanism；361. laser；37. hand adjustment cross；4. compression beam；41. oil cylinder one；
42. oil cylinder two；43. oil cylinder three；44. guide post；5. wire casing；51. wire-feed motor.
Specific embodiment
A kind of container lintel automatic welding device of band three-dimensional weld seam recognition of the application, it is main to process the device being related to
It is made of mounting rack 1, crossbeam 2, welding tractor 3, weld seam recognition module, touch screen, control program, compression beam 4 etc..
Specific in process, in conjunction with Fig. 1-4, welded workpiece is placed on chassis (being not marked in figure), on chassis
Side sets up compression beam 4, and welded workpiece is fixed by compression beam 4；Guide rail 21 is set above compression beam 4, and being equipped on guide rail 21 can
It realizes the mobile welding tractor 3 of four axis, sweep mechanism 36 and welding gun 31, the sensor of sweep mechanism 36 is set on welding tractor 3
The weld seam signal of 361 detection lower section welding workpieces, and signal is passed into central controller (not shown), central controller
According to the signal, the walking path of welding tractor 3 is set, welding tractor 3 is synchronous with 36 signal of sweep mechanism, and accordingly along guide rail
21 do the real-time front, rear, left and right of opposite welded workpiece and ascending, descending movement, after weld with after position to be welded location matches
Welding gun starting on trolley, i.e., implement welding sequence to position to be welded.
Based on the rectangle steel that crossbeam 2 is about 300*200mm with size, wall thickness 10mm.On the side of crossbeam 2,
Accurate cross slide way 21 (model: HGW25CA, silver on Taiwan) is installed.On guide rail 21, welding tractor 3 is installed.
Wherein, it is overlapped for lintel, in conjunction with Fig. 1, one guide rail 21 is respectively set along the vertical direction in the two sides of crossbeam 2, often
Two sets of welding systems (including welding tractor 3 and its driving of matched four axis, wire-feed motor 51) is installed respectively on side rails 21, that is, is welded
Connect one 3a of trolley, two 3b of welding tractor, three 3c of welding tractor, four 3d of welding tractor, welding tractor 3 and the weldering for welding tractor 3
Rifle 31 is respectively positioned on 2 side of crossbeam for the wire-feed motor 51 of silk；For preceding lintel overlap joint, the packet of guide rail 21 is set to cross rail top and side
Side is installed on the top of crossbeam 2 for the wire-feed motor 51 of silk for the welding gun 31 of welding tractor 3 at this point, welding tractor 3 is located at 2 side of crossbeam
Portion.
On the basis of above scheme, when square structure can be used in guide rail 21, guide rail 21 is using than round linear guide precision
Higher square rail, and in 21 mounting surface groove milling of guide rail guarantees installation accuracy and durable.The length of crossbeam 2, needs
Meet when backing out for one, in addition a welding that can complete whole weld seam；When all backing out for two, the defeated of workpiece is not influenced
It send.So length needs enough.For convenience with the replacement of rear slider, guide rail 21 needs to form split type structure by three sections.When
When needing replacing, it may be convenient to which centre, this section is taken off.
On welding tractor 3, welding gun 31, front-and-back adjusting mechanism 32, height regulating mechanism 33, left and right adjusting mechanism are installed
34 and sweep mechanism 36.Welding tractor 3 is realized by rack-and-pinion and is driven.In welding tractor, scan module and sensing are installed
Device 361, sensor 361 and sweep mechanism 36 cooperate, and complete weld seam recognition.
On above-mentioned working foundation, applicant has also done further research to welding tractor 3: in conjunction with Fig. 5, welding tractor
3 further include having front-and-back adjusting mechanism 321, height regulating mechanism 33 and left and right adjusting mechanism 34, front-and-back adjusting mechanism 321, height
Adjustment mechanism 33 and left and right adjusting mechanism 34 are installed on guide rail 21 by fishplate bar 32, and central controller is controlled according to signal respectively
The electric machine operation state of front-and-back adjusting mechanism 321, height regulating mechanism 33 and left and right adjusting mechanism 34, drives welding tractor accordingly
Welding gun 31 on 3 does front and rear, left and right, up and down/elevating movement, that is, realizes that three axis are mobile.
According to the signal that central controller issues, the motor of front-and-back adjusting mechanism 32 moves before and after driving entire welding tractor 3
It is dynamic；Welding gun 31 is installed on the output end of height regulating mechanism 34 by gun rack 35, and 34 motor of height regulating mechanism drives welding gun
31 move up and down, and left and right adjusting mechanism 33 drives fishplate bar 32 to move along guide rail 21 or so according to the signal that central controller issues
It is dynamic.The motor and its transmission mechanism of front and back and left and right adjusting mechanism are realized welding gun 31 in front and back (also referred to as X-axis) and are controlled (also referred to as
For Y-axis) adjust automatically of the adjust automatically of both direction, it is driven by a motor lead screw rotation, then driven and moved by nut, in outer layer
The components such as welding gun are fixed on the movable block of cross balladeur train, the precision of this adjustment device reaches 0.01mm.In the welding process, certainly
Dynamic left and right adjusting mechanism not only realizes the compensation of weld seam left and right deviation, while realizing the swing of welding gun.
Above-mentioned three axis mobile system uses direct coordinate system special welding machine, and each section is explained as follows:
A) X-direction driving mechanism: by the walking of servo motor and precision speed reduction device driving welding tractor 3 in the X direction.Its
Transmission is realized by rack-and-pinion；
B) sweep mechanism 36 and sensor 361: this system carries out position while welding and workpiece and welding gun 31 using sensor 361
Distance identification.Sensor 361 is driven by servo motor and is constantly scanned on weld seam both sides, and then system is original according to collecting
Data extract the left-right deviation and distance change of weld seam.
C) up and down/front and back tracking motor: the motor and its transmission mechanism realize welding gun 31 in upper and lower and former and later two directions
Adjust automatically adjust automatically, lead screw rotation is driven by a motor, then drive slide plate mobile by nut, in outer layer cross balladeur train
The components such as welding gun are fixed on movable block.The precision of this adjustment device reaches 0.01mm.
D) in order to save the working time (especially in opposite welding manner), vehicle-width is in the premise met the requirements
Under, it is small as far as possible on the width.In addition, the distance of sensor 361 and welding gun 31 is also small as far as possible.
E) in view of that can be changed with the walking manner of rear door frame, so the stroke of front and back adjustment mould group will be increased suitably, no
Less than 200mm.
F) in order to protect welding tractor 3, need to add a smoking mechanism, which has the function of exhausting, air hose height
Not less than 2m.
This system carries out the knowledge of position while welding and workpiece at a distance from welding gun 31 using sensor 361 and sweep mechanism 36
Not.Sensor 361 is driven by servo motor and is constantly scanned on weld seam both sides, and then system is extracted according to initial data is collected
The left-right deviation and distance change of weld seam.
On the basis of above scheme, we have also made sensor 361 and have further been preferably provided with, and sensor 361 uses
Japanese import Keyemce laser sensor IL-300 carries out the acquisition of weld seam raw information, then extracts weldering by software program
The left-right deviation and distance change of seam.361 reference distance of sensor is 300mm, measures distance 160-450mm, and light source is red
Semiconductor, laser (wavelength 655nm, it is seen that light), 560 μ W of output power；Bright spot range (when reference distance) about Φ 0.5mm, is adopted
Sample period 0.33/1/2/5ms (4 grades variable).
On the basis of above scheme, we are preferably provided with as follows for compression beam 4: according to the compression beam that scene is on probation
4, when only with an oil cylinder, it is possible in the welding process, workpiece be caused to deform.In order to avoid deformation, compression beam 4 is done
Following supplement setting: 3 oil cylinders, i.e., oil cylinder 1, oil cylinder 2 42 and oil cylinder 3 43 shown in Fig. 3, so as to be welded a) are used
Workpiece pressure is bigger；B) intermediate oil cylinder, that is, oil cylinder 2 42 is also mating is provided with guide post 44, and oil cylinder 2 42 uses 44 liters of guide post
Drop, guarantee, which is pressed into contact with face, to move.
On the basis of above scheme, we, which go back Butt welding gun 31 and have done, is further preferably provided with, in conjunction with Fig. 3, on welding gun 31
It is respectively arranged with hand adjustment cross 37 along vertically and laterally both direction, adjusts welding gun 31 in front and back (vertical range from weld seam)
With the adjustment of left and right both direction.This function be used primarily in after new clothes welding gun to rifle.
Processing method using the above scheme below is overlapped with regard to the preceding lintel of the lintel overlap joint of embodiment 1 and embodiment 2 respectively
It is specifically described.
Embodiment 1: lintel overlap joint
The present embodiment carries out the annotation of technical solution by taking the processing of the lap weld of lintel as an example.
In welding process, weld seam error mostlys come from workpiece or so position error and workpiece lengthwise position error, to keep away
Exempt from the accumulative of the above error, mainly for following two aspect in weld seam recognition: (1) weld seam or so identifies；(2) weld seam from welding gun away from
Identification from variation.
Welding process is as follows:
A) system is in work ready state, and one 3a of welding tractor resets at one end of crossbeam, and two 3b of welding tractor resets
In the centre of crossbeam 2；
B) doorframe in place after, worker presses " beginning " key, starts work；
C) two welding tractors are moved to 2 other end of crossbeam in the same direction simultaneously, during the motion, the starting of real-time detection weld seam
Position；
D) welding tractor 3 moves forward, when welding gun 31 reaches weld seam start position, according to the information detected
(vertical range of weld seam high and low position and welding gun 31 and weld seam), into rifle, the then starting the arc；
E) welding continues, and the adjustment of welding gun is carried out according to the weld information detected；Sweep mechanism 36 simultaneously
It also works with sensor 361, constantly new information preservation is got off；
F) when the welding bead of the approximately half of length of one 3a of welding tractor welding and two 3b of welding tractor connects, welding tractor
One 3a stops welding and quickly back resetting；
G) when two 3b of welding tractor has welded half length, the other end of crossbeam can be rested on, waits welding tractor one
3a starts to reset.When detecting that one 3a of welding tractor starts to reset or be completed in reset, two 3b of welding tractor starts in
Between reset；
H) two welding tractors are all completed to reset, and one 3a of welding tractor resets at one end of crossbeam, and two 3b of welding tractor is multiple
Position is in the centre of crossbeam；
I) next circulation is waited.
In welding, welding gun is welded with weld seam in 45 degree；Entire welding process not current interruption.
The welding total time for completing weld seam is 77s, specific to participate in shown in table 1.
The analysis of 1 working time of table
Wherein, in table 1, welding 55s refers to: assuming that speed of welding is 1.2m/min, weld seam overall length is about 2.2m.Because serving as reasons
Two automatic welding equipments are completed, and each weld length is about 1.1m；In reseting procedure, the removable workpiece being welded；Always
Counting 77s is to disregard the assembled workpiece time.
Embodiment 2: preceding lintel overlap joint
Before the present embodiment for the lap weld processing of lintel, the annotation of technical solution is carried out.
In welding process, weld seam error is mostly come from: (1) doorframe position error: since doorframe is transmitted by chain, being touched
It is automatically stopped to close switch or worker's hand-guided stops, there are errors for stop position.The position error of doorframe causes to weld
Seam start position also deviates；(2) position error of cross weld: there are errors in height and front-rear direction.
To avoid the accumulative of the above error, mainly for following two aspect in weld seam recognition: (1) doorframe detection and localization is known
Not；(2) identification of weld edge position and brim height.
Welding process is as follows:
A) system is in work ready state, and one 3a of welding tractor resets at one end of crossbeam, and two 3b of welding tractor resets
In the other end of crossbeam；
B) doorframe in place after, worker presses " beginning " key, starts work；
C) two welding tractors are simultaneously to moving toward one another among crossbeam, during the motion, real-time detection weld seam start bit
It sets；
D) welding tractor moves forward, when welding gun reaches weld seam start position, according to the information (weld seam detected
The vertical range of high and low position and welding gun and weld seam), into rifle, the then starting the arc；
E) welding continues, and the adjustment of welding gun is carried out according to the weld information detected；Scanning also carries out simultaneously,
Constantly new information preservation is got off；
F) when one 3a of welding tractor and two 3b of welding tractor soon meet, it is simultaneously quickly past that one 3a of welding tractor stops welding
Position is replied, and two 3b of welding tractor moves forward；
G) after the welding bead of the welding bead of two 3b of welding tractor and one 3a of welding tractor are to connecting, two 3b of welding tractor stops weldering
It connects and quickly back resets；
H) two welding tractors are all completed to reset, and respectively rest on the both ends of crossbeam；
I) next circulation is waited.
In welding, welding gun is welded with weld seam in 45 degree；Entire welding process not current interruption.
The welding total time for completing weld seam is 74s, specific to participate in shown in table 2.
The analysis of 2 working time of table
Wherein, in table 2, welding 55s refers to: assuming that speed of welding is 1.3m/min, weld seam overall length is about 2.2m, every weldering
Connecing the length that trolley needs to weld is 1.1m；It, can be synchronous with " mobile doorframe " in reseting procedure.
Claims (10)
1. a kind of container lintel automatic welding device of band three-dimensional weld seam recognition, it is characterised in that: including compression beam, the pressure
Guide rail is set above tight beam, achievable four axis mobile welding tractor is installed on guide rail, scanning is set on the welding tractor
Mechanism and welding gun, the weld seam signal of the sensor detection lower section welding workpiece of sweep mechanism, and signal is passed into central control
Device, central controller set the walking path of welding tractor according to the signal, and welding tractor is synchronous with sweep mechanism signal, and
The real-time front, rear, left and right of opposite welded workpiece are done along guide rail accordingly and ascending, descending acts.
2. a kind of container lintel automatic welding device of band three-dimensional weld seam recognition as described in claim 1, it is characterised in that:
Crossbeam is set above the compression beam, and guide rail is set to the side or top of crossbeam.
3. a kind of container lintel automatic welding device of band three-dimensional weld seam recognition as claimed in claim 1 or 2, feature exist
In: the welded workpiece is lintel lap weld, and guide rail is set to crossbeam side, and guide rail is arranged along the vertical direction, is welded small
Vehicle and crossbeam side is respectively positioned on for the wire-feed motor of silk for the welding gun of welding tractor.
4. a kind of container lintel automatic welding device of band three-dimensional weld seam recognition as claimed in claim 3, it is characterised in that:
One group of guide rail is respectively arranged in the crossbeam two sides, and welding tractor is provided with four groups.
5. a kind of container lintel automatic welding device of band three-dimensional weld seam recognition as claimed in claim 1 or 2, feature exist
In: the welded workpiece is preceding lintel lap weld, and guide rail packet is set to cross rail top and side, and welding tractor is located at crossbeam side
Side is installed on cross rail top for the wire-feed motor of silk for the welding gun of welding tractor.
6. a kind of container lintel automatic welding device of band three-dimensional weld seam recognition as claimed in claim 5, it is characterised in that:
The welding tractor is arranged two groups.
7. a kind of container lintel automatic welding device of band three-dimensional weld seam recognition as described in claim 1, it is characterised in that:
The welding tractor further includes having front-and-back adjusting mechanism, height regulating mechanism and left and right adjusting mechanism, front-and-back adjusting mechanism, height
Adjustment mechanism and left and right adjusting mechanism and sweep mechanism cooperate, and realize that four axis of welding tractor are mobile.
8. a kind of container lintel automatic welding device of band three-dimensional weld seam recognition as described in claim 1, it is characterised in that:
Multiple oil cylinders are arranged towards welded workpiece side in the compression beam.
9. a kind of container lintel automatic welding device of band three-dimensional weld seam recognition as claimed in claim 8, it is characterised in that:
In the multiple oil cylinder, oil cylinder placed in the middle is mating to be provided with guide post.
10. a kind of container lintel automatic welding device of band three-dimensional weld seam recognition as described in claim 1, feature exist
In: hand adjustment cross is provided on the welding gun.
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| CN201920072724.5U CN209477497U (en) | 2019-01-16 | 2019-01-16 | A kind of container lintel automatic welding device of band three-dimensional weld seam recognition |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920072724.5U CN209477497U (en) | 2019-01-16 | 2019-01-16 | A kind of container lintel automatic welding device of band three-dimensional weld seam recognition |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111375895A (en) * | 2020-04-14 | 2020-07-07 | 安徽钟南人防工程防护设备有限公司 | Accurate welding set is used in processing of people's air defense door frame |
| CN111390335A (en) * | 2020-03-31 | 2020-07-10 | 绍兴汉立工业自动化科技有限公司 | Automatic welding process for plate splicing welding of container |
| CN111843306A (en) * | 2020-07-29 | 2020-10-30 | 中车株洲车辆有限公司 | Lower side door component folding and welding device |
| CN114289961A (en) * | 2021-12-25 | 2022-04-08 | 佛山市桥鑫重型钢构安装工程有限公司 | Gantry welding platform |
| CN116532834A (en) * | 2023-02-03 | 2023-08-04 | 杭州简森五金制品有限公司 | Sliding door guide rail welding equipment with automatic clamping function |
-
2019
- 2019-01-16 CN CN201920072724.5U patent/CN209477497U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390335A (en) * | 2020-03-31 | 2020-07-10 | 绍兴汉立工业自动化科技有限公司 | Automatic welding process for plate splicing welding of container |
| CN111390335B (en) * | 2020-03-31 | 2021-12-24 | 绍兴汉立工业自动化科技有限公司 | Automatic welding process for plate splicing welding of container |
| CN111375895A (en) * | 2020-04-14 | 2020-07-07 | 安徽钟南人防工程防护设备有限公司 | Accurate welding set is used in processing of people's air defense door frame |
| CN111375895B (en) * | 2020-04-14 | 2021-10-08 | 安徽钟南人防工程防护设备有限公司 | Accurate welding set is used in processing of people's air defense door frame |
| CN111843306A (en) * | 2020-07-29 | 2020-10-30 | 中车株洲车辆有限公司 | Lower side door component folding and welding device |
| CN114289961A (en) * | 2021-12-25 | 2022-04-08 | 佛山市桥鑫重型钢构安装工程有限公司 | Gantry welding platform |
| CN116532834A (en) * | 2023-02-03 | 2023-08-04 | 杭州简森五金制品有限公司 | Sliding door guide rail welding equipment with automatic clamping function |
| CN116532834B (en) * | 2023-02-03 | 2023-09-19 | 杭州简森五金制品有限公司 | Sliding door guide rail welding equipment with automatic clamping function |
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