CN209175092U - A kind of all positon pipe-pipe intersection robot welding system - Google Patents
A kind of all positon pipe-pipe intersection robot welding system Download PDFInfo
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- CN209175092U CN209175092U CN201822000124.6U CN201822000124U CN209175092U CN 209175092 U CN209175092 U CN 209175092U CN 201822000124 U CN201822000124 U CN 201822000124U CN 209175092 U CN209175092 U CN 209175092U
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Abstract
The utility model discloses a kind of all positon pipe-pipe intersection robot welding systems, belong to welding technology field.It includes the source of welding current；Transmission parts comprising a motor-retarder, the gear connecting with retarder and chassis, gear are fixed on chassis, and motor-retarder is electrically connected with the source of welding current；Rotary part a comprising turntable, sideway balladeur train, welding torch and the gear ring with gear cooperation, welding torch, gear ring are fixed on turntable, and sideway balladeur train is secured transverse on turntable, and on the chassis that turntable is fixed on, motor-retarder driving turntable rotates welding torch；Hold assembly comprising pedestal and collet, two collets are symmetrical arranged and connect with base rotation, and pedestal is fixedly connected with chassis；Wire feed component comprising welding wire, welding wire are connect with welding torch.The system realizes that butt-welding fitting deviation from circular from and retaining wall on slope error are modified, and guarantees the depth consistency of weld seam, and the quality of weld seam is high, ensures the normal use of pipeline.
Description
Technical field
The utility model belongs to welding technology field, more specifically to a kind of all positon pipe-pipe intersection automatic welding
Welding system.
Background technique
Intersection welding seam is very common typical weld seam form in actual industrial production, especially in pipeline engineering and greatly
It during type production of pressure container, welds this space curved surface weld seam large labor intensity and welding quality is not easy to guarantee, so more
The welding of intersection is carried out using welding robot more.Two hollow circular-tubes vertically mutually pass through pipe-pipe intersection of composition,
For typical shape of a saddle space curve, the robot welding of space curve includes the welding processes such as downhand welding, vertical position welding, overhead welding, need to be adopted
With the welding manner of all-position welding, molten bath stress is illustrated in fig. 1 shown below in welding process, molten bath in the whole welding process by
3 kinds of power: gravity G, surface tension f and blow force of arc F, but there was only in different welding positions that gravity direction is identical, other 2 kinds of power
Direction changing always, so stress is very complicated during all-position welding, need to be divided into several areas in different positions
Between different welding parameters is set, to meet welding requirements.
In order to solve the above technical problems, through retrieving, Chinese Patent Application No. 201610723157.6, the applying date is
On August 25th, 2016, denomination of invention are as follows: a kind of all position welding picks, and hoofing part unit substrate passes through guide wheel group and walking
Gear side hangs over the side of rack guide rail, and the kinematic axis of first straight line moving cell is fixed on substrate, and second straight line movement is single
The kinematic axis of member is fixed on the sliding part of first straight line moving cell, and the first welding gun is fixed on the by the first welding gun fixing piece
On the sliding part of two linear motion units, the movement of the kinematic axis of first straight line moving cell perpendicular to second straight line moving cell
Axis, the first angle swing axis driving unit are fixed on the kinematic axis of second straight line moving cell, the first angle swing axis driving unit it is defeated
Shaft is connect with the first welding gun fixing piece, the output shaft of hoofing part unit and the wheel axis connection of walking gear.The bonding machine
Structure is complex, and production is difficult；Further, since the size of the different weldment of form is different, this kind of bonding machine can not be carried out
It adjusts, thus bad adaptability, it is not able to satisfy current welding demand.
For another example Chinese Patent Application No. 201520760878.5, the applying date are on September 29th, 2015, denomination of invention are as follows: one
Kind all-position automatic welding of pipelines machine, including welded pipe line, guide rail, fixed link, guide rail are made of 2 semicircular rings,
Fixing seat, guided way is arranged in the interface setting positioning seat and fastener of 2 semicircular rings of guide rail, the bottom surface of guide rail
Outer round surface of the road by fixed rod support in welded pipe line, the fixing seat of the lower end connection guide rail bottom surface of fixed link, Gu
The horizontal plane of the upper end of fixed pole is higher than the upper plane of guide rail, and welding tractor is arranged on guide rail.The bonding machine is by leading
The all-position welding of pipeline is realized to track, but for various sizes of pipeline, needs to make the guide rail of different size,
Ordinary circumstance, the precision for making this kind of guide rail is high, and wearability is good, causes production to increase, while bad adaptability, is unfavorable for pushing away
It is wide to use.
All position welding by analyzing above-mentioned patent picks structure, due to the limitation of structure itself, in different welding positions
Welding parameter and posture of welding torch be not easily controlled, while the deviation from circular from of round tube weldment and retaining wall on slope error make it difficult to reality
Existing welding gun tracks the automatic and accurate of weld seam, and the depth of welding line joint is inconsistent, and the quality for ultimately causing weld seam is inconsistent, influences
The normal use of pipeline.
Summary of the invention
1. to solve the problems, such as
Picking for existing all position welding can not accomplish that consistency causes the quality of weld seam different to pipe-pipe intersection welding seam
It causes, so that the utility model provides a kind of all positon pipe-pipe intersection robot welding system the problem of influencing normal use, knot
Structure is simple, easy to use, by control welding parameter and welding position, realize butt-welding fitting deviation from circular from and retaining wall on slope error into
Row amendment guarantees the depth consistency of weld seam, and the quality of weld seam is high, ensures the normal use of pipeline.
The utility model additionally provides a kind of welding method of all positon pipe-pipe intersection robot welding system, step rank
It is connected to sequence, by the adjustment to technological parameter, so that the surface of welding is smooth, the quality of welding is high, there can be effective improve to manage
The service life in road.
2. technical solution
To solve the above-mentioned problems, technical solution used by the utility model is as follows:
A kind of all positon pipe-pipe intersection robot welding system of the utility model, comprising:
The source of welding current provides power resources for welding system；
Transmission parts comprising a motor-retarder, the gear connecting with retarder and chassis, gear are fixed on bottom
On disk, motor-retarder is electrically connected with the source of welding current；
Rotary part a comprising turntable, sideway balladeur train, welding torch and the gear ring with gear cooperation, the welding torch, gear ring are solid
It is scheduled on turntable, sideway balladeur train is secured transverse on the turntable, and turntable is fixed on the chassis, and motor-retarder drives
Turn disk rotates welding torch；
Hold assembly comprising pedestal and collet, two collets are symmetrical arranged and connect with base rotation, and pedestal and chassis are solid
Fixed connection；
Wire feed component comprising welding wire, the welding wire are connect with welding torch.
In a kind of possible embodiment of the utility model, the transmission parts further include a hand-held handle, are held
Handle is fixed on the shell of motor.
In a kind of possible embodiment of the utility model, the rotary part is equipped with air inlet pipe, and air inlet pipe is worn
On sideway balladeur train, one end is connected to welding torch, and the argon gas in air inlet pipe provides protection for welding torch.
In a kind of possible embodiment of the utility model, the turntable is opening-like, and the width being open is big
In the diameter of pipeline to be welded；The quantity of the sideway balladeur train is three, and the opening two sides of turntable are arranged in two of them, separately
One is arranged on the turntable in the upper left corner, so that three sideway balladeur trains are distributed in isosceles triangle.Bonding machine can weld carbon steel, no
The various pipes such as the steel/pipe that becomes rusty docks, and may be selected using silk filling or from two ways is melted, can match integral type wire-feed motor, automatically adjust arc
It is long, and have the function of sideway.
In a kind of possible embodiment of the utility model, the collet is arc-shaped, the center of circle where collet
With the center of circle of the turntable is concentric is distributed, solderable caliber (mm), interior clamp: Φ 38.1- Φ 76mm (1 1/2 " -3 "), outer clamp:
Φ76-Φ130mm(3″-5″)。
In a kind of possible embodiment of the utility model, the other end of the air inlet pipe is equipped with fast joint.
In a kind of possible embodiment of the utility model, the pedestal be equipped with air inlet, collet by into
Port provides power source, and pipeline is clamped.
In a kind of possible embodiment of the utility model, the hold assembly further includes being set on the base
Handle.
The utility model additionally provides a kind of above-mentioned all positon pipe-pipe intersection robot welding system welding method,
Comprising the following specific steps
S101, preweld cleaning and requirement: when 1) welding carbon steel pipe, 5-8mm wants polishing rust-removal at weld bond, and it is former to expose metal
Color；2) pipe notch wants smooth, vertical, and two root canals are to upper rear gapless；3) acetone or alcohol washes workpiece surface greasy dirt are used；
S102, it is crossed on pipeline to be welded after opening collet, then collet clamping pipe under the influence of air pressure；
S103, air inlet pipe start air inlet, and air inflow control is in 5-8L/min, and simultaneously wire feed, gage of wire are for welding torch preheating
1.0mm, wire feed rate 1200-1800mm/min；
S104, motor-retarder work, velocity of rotation 0.11-2.2rpm, driving turntable rotates welding torch, to pipeline
It is welded.
3. beneficial effect
Compared with the prior art, the utility model has the following beneficial effects:
(1) all positon pipe of the utility model-pipe intersection robot welding system carries out pipeline by hold assembly
Positioning, then transmission parts apply power drive rotary part pipeline circumferencial direction rotate, by control welding parameter and
Welding position realizes that butt-welding fitting deviation from circular from and retaining wall on slope error are modified, realizes the welding to the junction of pipeline, protects
The depth consistency of weld seam is demonstrate,proved, the quality of weld seam is high, the normal use of pipeline is ensured, in addition, the system can do promotion up and down
Movement, compensation saddle drop are moved with realizing that welding torch does saddle trajectory along weld seam；The pendulum motion of welding torch when welding, to meet
The forming quality of weld seam in the case of big groove；
(2) all positon pipe of the utility model-pipe intersection robot welding system, the shell of motor are equipped with hand-held handle
Hand facilitates the use of the system to install；
(3) all positon pipe of the utility model-pipe intersection robot welding system, rotary part are equipped with air inlet pipe,
Air inlet pipe is arranged on sideway balladeur train, and one end is connected to welding torch, and the argon gas in air inlet pipe provides protection for welding torch, can be effective
Raising weld seam quality, guarantee that the quality of weld seam meets requirement；
(4) all positon pipe of the utility model-pipe intersection robot welding system, collet are arc-shaped, where collet
The center of circle and turntable the center of circle it is concentric be distributed so that the center after pipeline clamping is consistent with the center of circle of turntable, turntable does circumference fortune
Dynamic, the deviation of welding is small, it is ensured that the reliability of welding；
(5) all positon pipe of the utility model-pipe intersection robot welding system, pedestal are equipped with air inlet, collet
Power source is provided by air inlet, is clamped pipeline by the way of pneumatic, the power of clamping is big, it is not likely to produce shaking,
Guarantee the quality of welding；
(6) all positon pipe of the utility model-pipe intersection robot welding system, uses the integral type wire-feed motor to be to this
System carries out wire feed, can accurately control wire feed rate, and wire feed is conducive to appearance of weld without winding, beautiful.
(7) all positon pipe of the utility model-pipe intersection robot welding system welding method, structure is simple, is easy to
Manufacture.
Detailed description of the invention
The technical solution of the utility model is described in further detail below with reference to drawings and examples, still
It should be known that these attached drawings are designed for task of explanation, therefore not as the restriction of the scope of the utility model.In addition,
Unless otherwise indicated, these attached drawings are meant only to conceptually illustrate structure construction described herein, without to carry out to scale
It draws.
Fig. 1 is molten bath force diagram during pipe-pipe continuous line welding；
Fig. 2 is the utility model all positon pipe-pipe intersection robot welding system structural schematic diagram；
Fig. 3 is the utility model all positon pipe-pipe intersection robot welding system partial structurtes main view；
Fig. 4 is the side view of Fig. 3；
Fig. 5 is the structural schematic diagram of the utility model rotary part；
Fig. 6 is the structural schematic diagram of the utility model hold assembly；
Fig. 7 is the structural schematic diagram of the utility model transmission parts；
Fig. 8 is U-shaped groove welding structure schematic diagram；
Fig. 9 is double V-groove welding structure schematic diagram.
Description of symbols in figure:
100, the source of welding current；
200, transmission parts；210, motor-retarder；220, chassis；230, handle is held；240, gear；
300, rotary part；310, turntable；320, sideway balladeur train；330, welding torch；340, gear ring；350, air inlet pipe；360,
Fast joint；
400, hold assembly；410, pedestal；411, air inlet；412, handle；420, collet；
500, wire feed component；510, welding wire.
Specific embodiment
Hereafter to the detailed description of the exemplary embodiment of the utility model with reference to attached drawing, which forms the one of description
Part has been shown as example the enforceable exemplary embodiment of the utility model in the figure.Although these exemplary realities
Example is applied to be described in sufficient detail so that those skilled in the art can implement the utility model, it is to be understood that it can be realized
His embodiment and can various changes can be made to the utility model in the case where not departing from the spirit and scope of the utility model.Hereafter
Required the scope of the utility model is not limited to the more detailed description of the embodiments of the present invention, and only
The description of the characteristics of in order to be illustrated and not limit to the utility model and feature, to propose to execute the utility model
Best mode, and it is sufficient to make those skilled in the art that can implement the utility model.Therefore, the scope of the utility model only by
Appended claims limit.
Hereafter the detailed description of the utility model and example embodiment are more fully understood in combination with attached drawing, wherein this reality
It is identified with novel element and feature by appended drawing reference.
Embodiment 1
All positon pipe as illustrated in figs. 2-7-pipe intersection robot welding system, comprising: the source of welding current 100, for welding system
System provides power resources.
The circumferentially fixed outside in pipeline of the welding system, realizes the welding of circumferencial direction, need be with the center of pipeline
The center of circle moves in a circle, it is therefore desirable to which transmission parts 200 provide power resources for it.Transmission parts 200 include that a motor-subtracts
Fast device 210, the gear 240 connecting with retarder and chassis 220, gear 240 are fixed on chassis 220, motor-retarder 210
It is electrically connected with the source of welding current 100；Transmission parts 200 further include a hand-held handle 230, and hand-held handle 230 is fixed on the outer of motor
On shell, in use, the system is mounted on pipeline by hand-held handle 230, it is convenient to use.
The rotary part 300 of the present embodiment comprising a turntable 310, sideway balladeur train 320, welding torch 330 and with gear 240
The gear ring 340 of cooperation, welding torch 330, gear ring 340 are fixed on turntable 310, and sideway balladeur train 320 is secured transverse on turntable 310,
Turntable 310 is fixed on chassis 220, and motor-retarder 210 drives turntable 310 to rotate welding torch 330.Rotate steady durable, tooth
Bearing guiding is enclosed, resistance is small, gapless；Closed-loop control with feedback, precision are high.
The welding torch 330 that the system uses is circulated water-cooled tig torch, the tungsten electrode of standard configuration 3.2mm, maximum operating currenbt
Phenomena such as 200A, arcing time factor is high, can meet and work long hours, and solder joint will appear oxidation when welding, therefore rotary part
300 are equipped with air inlet pipe 350, and air inlet pipe 350 is arranged on sideway balladeur train 320, and one end is connected to welding torch 330, air inlet pipe 350
In argon gas be that welding torch 330 provides protection, the other end of air inlet pipe 350 is equipped with fast joint 360, and fast joint 360 can be with argon gas
Source quickly connects connection, and sufficient argon gas is provided for welding torch 330.
Further, the turntable 310 of the present embodiment is opening-like, and the width being open is greater than the straight of pipeline to be welded
Diameter；The quantity of sideway balladeur train 320 is three, and the opening two sides of turntable 310 are arranged in two of them, another is arranged in the upper left corner
Turntable 310 on so that three sideway balladeur trains 320 in isosceles triangle be distributed.
Further, the hold assembly 400 of the present embodiment comprising pedestal 410 and collet 420, hold assembly 400 also wrap
The handle 412 being arranged on pedestal 410 is included, two collets 420 are symmetrical arranged and are rotatablely connected with pedestal 410, pedestal 410 and chassis
220 are fixedly connected；Collet 420 is arc-shaped, and the center of circle in the center of circle and turntable 310 where collet 420 is concentric to be distributed, solderable caliber
(mm), interior clamp: Φ 38.1- Φ 76mm (1 1/2 " -3 "), outer clamp: Φ 76- Φ 130mm (3 " -5 ").The system can be to not
Make any adjusting with caliber, it is more convenient；The clip designs of circular arc fit closely collet and tube wall, ensure that welding torch is welding
In termination process and the concentricity of pipeline.
In addition, pedestal 410 is equipped with air inlet 411, collet 420 provides power source by air inlet 411, pipeline is clamped
Firmly.
Further, the wire feed component 500 of the present embodiment comprising welding wire 510, welding wire 510 are connect with welding torch 330.Weldering
Welding system can weld the various pipes such as carbon steel, stainless steel/pipe docking, may be selected using silk filling or from molten two ways, can be with one
Formula wire-feed motor automatically adjusts arc length, and has the function of sideway.
Embodiment 2
The present embodiment additionally provides a kind of welding method of all positon pipe-pipe intersection robot welding system, including following
Specific steps:
S101, preweld cleaning and requirement: when 1) welding carbon steel pipe, 8mm wants polishing rust-removal at weld bond, exposes metal primary colors；
2) pipe notch wants smooth, vertical, and two root canals are to upper rear gapless；3) acetone or alcohol washes workpiece surface greasy dirt are used；
S102, it is crossed on pipeline to be welded after opening collet, then collet clamping pipe under the influence of air pressure；
S103, air inlet pipe start air inlet, and air inflow control is in 6L/min, and simultaneously wire feed, gage of wire are for welding torch preheating
1.0mm, wire feed rate 1500mm/min；
S104, motor-retarder work, velocity of rotation 0.15rpm, driving turntable rotate welding torch, carry out to pipeline
Welding.
Protective gas: when 1) without particular/special requirement, it is recommended to use 99.99% argon gas of standard；2) argon flow is without special
Control is in 5-8L/min when technique requires.
Embodiment 3
The present embodiment additionally provides a kind of welding method of all positon pipe-pipe intersection robot welding system, including following
Specific steps:
S101, preweld cleaning and requirement: when 1) welding carbon steel pipe, 5mm wants polishing rust-removal at weld bond, exposes metal primary colors；
2) pipe notch wants smooth, vertical, and two root canals are to upper rear gapless；3) acetone or alcohol washes workpiece surface greasy dirt are used；
S102, it is crossed on pipeline to be welded after opening collet, then collet clamping pipe under the influence of air pressure；
S103, air inlet pipe start air inlet, and air inflow control is in 8L/min, and simultaneously wire feed, gage of wire are for welding torch preheating
1.0mm, wire feed rate 1800mm/min；
S104, motor-retarder work, velocity of rotation 2.2rpm, driving turntable rotate welding torch, weld to pipeline
It connects.
Embodiment 4
The present embodiment additionally provides a kind of welding method of all positon pipe-pipe intersection robot welding system, including following
Specific steps:
S101, preweld cleaning and requirement: when 1) welding carbon steel pipe, 6mm wants polishing rust-removal at weld bond, exposes metal primary colors；
2) pipe notch wants smooth, vertical, and two root canals are to upper rear gapless；3) acetone or alcohol washes workpiece surface greasy dirt are used；
S102, it is crossed on pipeline to be welded after opening collet, then collet clamping pipe under the influence of air pressure；
S103, air inlet pipe start air inlet, and air inflow control is in 7L/min, and simultaneously wire feed, gage of wire are for welding torch preheating
1.0mm, wire feed rate 1700mm/min；
S104, motor-retarder work, velocity of rotation 1.8rpm, driving turntable rotate welding torch, weld to pipeline
It connects.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in be also one of the embodiments of the present invention, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design
Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (8)
1. a kind of all positon pipe-pipe intersection robot welding system characterized by comprising
The source of welding current (100), provides power resources for welding system；
Transmission parts (200) comprising a motor-retarder (210), the gear (240) being connect with retarder and chassis
(220), gear is fixed on chassis (220), and motor-retarder (210) is electrically connected with the source of welding current (100)；
Rotary part (300) comprising a turntable (310), sideway balladeur train (320), welding torch (330) and with gear (240) cooperate
Gear ring (340), the welding torch (330), gear ring (340) be fixed on turntable (310), and sideway balladeur train (320) is secured transverse to
On the turntable (310), turntable (310) is fixed on the chassis (220), and motor-retarder (210) drives turntable
(310) welding torch (330) are rotated；
Hold assembly (400) comprising pedestal (410) and collet (420), two collets (420) be symmetrical arranged and with pedestal (410)
Rotation connection, pedestal (410) are fixedly connected with chassis (220)；
Wire feed component (500) comprising welding wire (510), the welding wire (510) are connect with welding torch (330).
2. all positon pipe according to claim 1-pipe intersection robot welding system, which is characterized in that the driving section
Part (200) further includes a hand-held handle (230), and hand-held handle (230) are fixed on the shell of motor.
3. all positon pipe according to claim 1 or 2-pipe intersection robot welding system, which is characterized in that the rotation
Component (300) is equipped with air inlet pipe (350), and air inlet pipe (350) is arranged on sideway balladeur train (320), and one end is connected to welding torch
(330), the argon gas in air inlet pipe (350) is that welding torch (330) provide protection.
4. all positon pipe according to claim 1 or 2-pipe intersection robot welding system, which is characterized in that described turns
Disk (310) is opening-like, and the width being open is greater than the diameter of pipeline to be welded；The quantity of the sideway balladeur train (320) is
Three, two of them are arranged in the opening two sides of turntable (310), another is arranged on the turntable (310) in the upper left corner, so that three
A sideway balladeur train (320) is distributed in isosceles triangle.
5. all positon pipe according to claim 1 or 2-pipe intersection robot welding system, which is characterized in that the folder
Head (420) is arc-shaped, and the center of circle of the center of circle where collet (420) and the turntable (310) is concentric to be distributed.
6. all positon pipe according to claim 3-pipe intersection robot welding system, which is characterized in that the air inlet
The other end for managing (350) is equipped with fast joint (360).
7. all positon pipe according to claim 6-pipe intersection robot welding system, which is characterized in that the pedestal
(410) air inlet (411) are equipped with, collet (420) provides power source by air inlet (411), and pipeline is clamped.
8. all positon pipe according to claim 7-pipe intersection robot welding system, which is characterized in that the clamping
Component (400) further includes the handle (412) being arranged on pedestal (410).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822000124.6U CN209175092U (en) | 2018-11-30 | 2018-11-30 | A kind of all positon pipe-pipe intersection robot welding system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822000124.6U CN209175092U (en) | 2018-11-30 | 2018-11-30 | A kind of all positon pipe-pipe intersection robot welding system |
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| CN209175092U true CN209175092U (en) | 2019-07-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332850A (en) * | 2018-11-30 | 2019-02-15 | 宣城市安工大工业技术研究院有限公司 | A kind of all positon pipe-pipe intersection robot welding system and welding method |
| CN111360364A (en) * | 2020-04-17 | 2020-07-03 | 苏州威尔汉姆堆焊技术有限公司 | Intraductal welding set including clamping part |
| CN111438423A (en) * | 2020-04-17 | 2020-07-24 | 苏州威尔汉姆堆焊技术有限公司 | Intraductal welding set including second supporting mechanism |
| CN114799651A (en) * | 2022-06-22 | 2022-07-29 | 徐州中矿地科岩土工程技术有限公司 | High-pressure-bearing pipeline welding device |
-
2018
- 2018-11-30 CN CN201822000124.6U patent/CN209175092U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332850A (en) * | 2018-11-30 | 2019-02-15 | 宣城市安工大工业技术研究院有限公司 | A kind of all positon pipe-pipe intersection robot welding system and welding method |
| CN111360364A (en) * | 2020-04-17 | 2020-07-03 | 苏州威尔汉姆堆焊技术有限公司 | Intraductal welding set including clamping part |
| CN111438423A (en) * | 2020-04-17 | 2020-07-24 | 苏州威尔汉姆堆焊技术有限公司 | Intraductal welding set including second supporting mechanism |
| CN111360364B (en) * | 2020-04-17 | 2022-01-04 | 苏州威尔汉姆堆焊技术有限公司 | Intraductal welding set including clamping part |
| CN111438423B (en) * | 2020-04-17 | 2022-05-27 | 苏州威尔汉姆堆焊技术有限公司 | Intraductal welding set including second supporting mechanism |
| CN114799651A (en) * | 2022-06-22 | 2022-07-29 | 徐州中矿地科岩土工程技术有限公司 | High-pressure-bearing pipeline welding device |
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