CN207579126U - A kind of laser welding apparatus of tubular structure - Google Patents
A kind of laser welding apparatus of tubular structure Download PDFInfo
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- CN207579126U CN207579126U CN201721781662.2U CN201721781662U CN207579126U CN 207579126 U CN207579126 U CN 207579126U CN 201721781662 U CN201721781662 U CN 201721781662U CN 207579126 U CN207579126 U CN 207579126U
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Abstract
The utility model discloses a kind of laser welding apparatus of tubular structure, tubular structure includes the first plastic pipe and the second plastic pipe being plugged in the first plastic pipe, and plug division is formed after the first plastic pipe and the second plastic pipe grafting；Laser welding apparatus includes device body and control system, tubular structure clamping device, laser hole drilling illuminator and the optical path switching device being arranged in device body；During laser welding, the axial direction of tubular structure is parallel with the laser beam that laser hole drilling illuminator is sent out, and the axis of tubular structure is overlapped with the axis of optical path switching device, laser beam converts back reflection to plug division and perpendicular to the axis of tubular structure through optical path switching device, laser beam penetrates the first plastic pipe and in the outer surface circumference soldering of the second plastic pipe, it may insure that tubular structure is not required to axial rotation and laser circumference welding can be completed, the volumetric spaces of laser welding apparatus are farthest reduced simultaneously, tubular structure cleaning after welding, hyposmosis and durable weather-proof.
Description
Technical field
The utility model is related to tubular structure laser welding techniques fields, relate more specifically to a kind of Laser Welding of tubular structure
Device.
Background technology
As the requirements such as the safety of automobile, driving experience, comfort level are gradually increased in consumer, vehicle each zero
Part is all carrying out technological innovation and upgrading optimization.The channel that automobile tubular structure is conveyed as system media, it is hypotonic to its
Permeability, leakproofness, weatherability, durability etc. suffer from clear and definite and detailed data demand.Tubular structure in the prior art（Such as modeling
Expects pipe and connector）Plug connection generally take interference connection, spin friction weldering, be used for a long time there are system media hyposmosis with
And the problem of cleannes are poor in pipe, so for this technical indicator, tubular structure laser welding process and equipment need to be developed.
Invention content
In order to solve the deficiencies in the prior art, the utility model provide it is a kind of efficiently, it is cleaning, hyposmosis, durable
The laser welding apparatus of weather-proof tubular structure.
The utility model institute technique effect to be achieved is realized by following scheme：A kind of laser of tubular structure is welded
It puts, tubular structure includes the first plastic pipe and the second plastic pipe being plugged in the first plastic pipe, first plastics
Plug division is formed after pipe fitting and the second plastic pipe grafting；The laser welding apparatus includes device body and control system, setting
Tubular structure clamping device, laser hole drilling illuminator and optical path switching device in device body；During laser welding, the tubulose knot
The axial direction of structure is parallel with the laser beam that laser hole drilling illuminator is sent out, and the axis of the axis of tubular structure and optical path switching device
Line overlaps, and laser beam converts back reflection to plug division and perpendicular to the axis of tubular structure through optical path switching device, described to swash
Light light beam penetrates the first plastic pipe and in the outer surface circumference soldering of the second plastic pipe.
Preferably, the tubular structure clamping device, which includes clamping the first of the first plastic pipe, clamps module, clamps the
The second of two plastic pipes clamps module, the second plastic pipe of control is pressed into the first motor module of the first plastic pipe, control
First, which clamps module and second, clamps the second motor module of module horizontal displacement, and the tubular structure clamping device is pressing
Tightly, the first plastic pipe and the second plastic pipe are clamped and positioned, makes the axis position of the first plastic pipe and the second plastic pipe
Put the axial location in laser optical path conversion equipment.
Preferably, the first clamping module is additionally provided with guide-localization slot to clamp and position the first plastics after grafting
Pipe fitting and the second plastic pipe, the first motor module are additionally provided with pressure sensor to detect the second plastic pipe press-in the
The pressure value of one plastic pipe, the second motor module are equipped with horizontal guide rail the first clamping module and second to be controlled to clamp
The horizontal movement of module.
Preferably, cylinder unit of the light path converter device including one end closing, one end open, the lasing fluorescence
The laser beam that device is sent out is projected from one end inner surface of closing, and the tubular structure is in the one end open of optical path switching device
The axis of place and tubular structure is on the axis of optical path switching device.
Preferably, the optical path switching device, which further includes, is arranged in cylinder unit and is set successively far from laser hole drilling illuminator
Collimating mirror, laser galvanometer, focus lamp and the speculum with focus lamp in 45 ° of angle settings put.
Preferably, the speculum is the minute surface of 360 ° of rotations.
Preferably, the laser welding apparatus is set there are two tubular structure clamping device.
Preferably, it further includes and is arranged on the safe light curtain of front side above device body, clamp dress for starting tubular structure
The start button put, the water cooling unit for being arranged on device body side.
Preferably, first plastic pipe and the second plastic pipe are cylinder tubulose.
The utility model has the following advantages：
1st, by setting optical path switching device, the tubular structure parallel with laser beam is subjected to vertical circumference in plug division
Welding, it can be ensured that tubular structure is not required to axial rotation and laser circumference welding can be completed, while farthest reduces laser
The volumetric spaces of welder, tubular structure cleaning, hyposmosis and durable weather-proof after welding；
2nd, the first plastic pipe and the second plastic pipe are compressed, clamp and positioned by tubular structure clamping device, it is ensured that
The axis of tubular structure is overlapped with the axis of optical path switching device, improves the precision of welding, high-efficient homework.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of the utility model laser welding apparatus；
Fig. 2 is the stereoscopic schematic diagram of the utility model tubular structure clamping device；
Fig. 3 is the principle schematic of the utility model optical path switching device；
Fig. 4 is the principle schematic of the utility model laser welding.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples, the example of the embodiment is in attached drawing
In show, wherein same or similar label represents same or similar element or with same or like function from beginning to end
Element.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for explaining the utility model, without being understood that
For the limitation to the utility model.
In the description of the present invention, it is to be appreciated that term " length ", " width ", " on ", " under ", " preceding ",
The orientation or position relationship of the instructions such as " rear ", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on
Orientation shown in the drawings or position relationship are for only for ease of description the utility model and simplify description rather than instruction or dark
Show that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The limitation of the utility model.
In addition, term " first ", " second ", " third " are only used for description purpose, and it is not intended that instruction or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic." first ", " second ", " third " are defined as a result,
One or more this feature can be expressed or be implicitly included to feature." multiple " contain in the description of the present invention,
Justice is two or more, unless otherwise specifically defined.
In the utility model unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed ", the terms such as " setting " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally；
Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, may be used also
To be the interaction relationship of connection inside two elements or two elements.For the ordinary skill in the art,
Concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
- Fig. 3 is please referred to Fig.1, the utility model embodiment provides a kind of laser welding apparatus of tubular structure, wherein tubulose knot
Structure includes the first plastic pipe 1 and the second plastic pipe 2 being plugged in the first plastic pipe 1,1 He of the first plastic pipe
Plug division 3 is formed after second plastic pipe, 2 grafting.
The laser welding apparatus includes device body 100 and control system, the tubular structure being arranged in device body 100
Clamping device 200, laser hole drilling illuminator 300 and optical path switching device 400, the tubular structure clamping device 200 for compress and
Clamping tubular structure, the control system are used to control the operation of entire laser welding apparatus.
During laser welding, the axial direction of the tubular structure is parallel with the laser beam 4 that laser hole drilling illuminator 300 is sent out,
And the axis of tubular structure is overlapped with the axis of optical path switching device 400, laser beam 4 is after the conversion of optical path switching device 400
Reflex to plug division 3 and perpendicular to the axis of tubular structure, the laser beam 4 penetrates the first plastic pipe 1 and in the second modeling
The outer surface circumference soldering of expects pipe part 2.By setting optical path switching device 400, the tubular structure parallel with laser beam is existed
Plug division 3 carries out vertical circumference soldering, it can be ensured that tubular structure is not required to axial rotation and laser circumference welding can be completed, simultaneously
The volumetric spaces of laser welding apparatus are farthest reduced, tubular structure cleaning, hyposmosis and durable weather-proof after welding.
As shown in Fig. 2, shown in figure be tubular structure clamping device 200 structural perspective, tubular structure folder
Tight device 200 includes clamping the first of the first plastic pipe 1 the second clamping die for clamping module 210, clamping the second plastic pipe 2
Group 220, the second plastic pipe 2 of control are pressed into the first motor module 230 of the first plastic pipe 1, control first clamps module 210
The the second motor module 240 for clamping 220 horizontal displacement of module with second.The tubular structure clamping device 200 is compressing, press from both sides
Tight and the first plastic pipe 1 of positioning and the second plastic pipe 2 make the axial location of the first plastic pipe 1 and the second plastic pipe 2
Axial location in laser optical path conversion equipment 400.Wherein, the first clamping module 210 is additionally provided with guide-localization slot 211
To clamp and position the first plastic pipe 1 and the second plastic pipe 2 after grafting, the first motor module 230 is additionally provided with
Pressure sensor 231 to detect the second plastic pipe 2 be pressed into the first plastic pipe 1 pressure value, the second motor module
240 are equipped with horizontal guide rail 241 to control the horizontal movement of the first clamping module 210 and the second clamping module 220.
During tubular structure 200 specific works of clamping device, first by grafting good the first plastic pipe 1 and the second plastic pipe
2, which are respectively charged into the first clamping module 210 and second, clamps in module 220, first clamps the clamping module of module 210 and second at this time
220 in the vertical direction be projected as straight line, first, which clamps module 210, starts and clamps the first plastic pipe 1, second and clamp
Module 220, which starts, clamps the second plastic pipe 2；Then, the first motor module 230, which starts, drives second to clamp 220 direction of module
The first clamping movement of module 210 makes the second plastic pipe 2 further at the uniform velocity be pressed into the first plastic pipe 1, when on pressure controller
When display reaches the pressure value of setting, the first motor module 230 stops press-in action, at this time the first plastic pipe 1 and the second modeling
The assembling of expects pipe part 2 is completed；Then, the air pressure of the first clamping module 210 is broken, but there are still additional locks to the first plastic pipe 1
The effect of holding, it is ensured that the direction of the first plastic pipe 1 and the second plastic pipe 2 is constant；Followed by the first motor module 230 continues
Press-in action makes the second plastic pipe 2 enter guide-localization slot 211, reaches certain stroke, and the second plastic pipe 2 can be determined with being oriented to
Position slot 211, which is resisted, generates reaction force, and after pressure controller shows the pressure value for reaching setting, the first motor module 230 stops
Only press-in acts, and the second plastic pipe 2 is entered in guide-localization slot 211 at this time, it is ensured that the first plastic pipe 1 and the second plastics
The concentricity of pipe fitting 2 and laser optical path conversion equipment 400；Followed by the first clamping module 210 clamps the first plastics assembled
1 and second plastic pipe 2 of pipe fitting, the first motor module 230 return to initial position, and the second motor module 240 starts, control first
It clamps the clamping module 220 of module 210 and second to move horizontally along the orientation of horizontal guide rail 241 towards setting, behind in-position
Stop；Finally, laser optical path conversion equipment 400 moves the first plastic pipe 1 for making its shaft core position and assembling and the second modeling
The shaft core position of expects pipe part 2 overlaps, and starts laser hole drilling illuminator 300 and carries out laser welding in plug division 3.
As shown in Fig. 2, the optical path switching device 400 generally one end is closed, the cylinder unit of one end open, it is described
The laser beam 4 that laser hole drilling illuminator 300 is sent out is projected from one end inner surface of closing, and the tubular structure is in light path converting dress
It puts at 400 one end open and the axis of tubular structure is on the axis of optical path switching device 400（The shape is not shown in Fig. 2
State）.As shown in figure 3, it shows to be laser beam 4 that laser hole drilling illuminator 300 is sent out in Fig. 3 after optical path switching device 400
Carry out the principle schematic of circumference soldering.The optical path switching device 400, which further includes, to be arranged in parallel in cylinder unit and remote
It the collimating mirror 410 that is set gradually from laser hole drilling illuminator 300, laser galvanometer 420, focus lamp 430 and is set with focus lamp 430 in 45 °
The speculum 440 put, the speculum 440 are the minute surface of 360 ° of rotations.Laser beam 4 forms parallel after collimating mirror 410
Light beam is incident to the width W, the width W for determining circumference soldering after laser galvanometer 420 by 420 rotation angle of laser galvanometer
It is determined by the diameter of light beam.Then, laser beam 4 by focus lamp 430 and is incident to speculum 440, and speculum 440 is by laser
Light beam 4 after 90 ° of reflections in the axially vertical laser beam 4 with tubular structure is formed, perpendicular to the laser beam 4 of tubular structure
It is incident between tubular structure plug division 3 and the first plastic pipe 1 and the second plastic pipe 2 in plug division 3 and welds, finally
By 440 minute surfaces of speculum of 360 ° of rotations, it can be achieved that laser beam 4 is to the circumference soldering of plug division 3.From another angle into
Row description, as shown in figure 4, laser beam 4 is formed after collimating mirror 410 and laser galvanometer 420 with one fixed width W（Light beam
Diameter）Directional light beam ring, light beam ring by 360 ° rotation minute surface 440 back reflections of speculum to the plug division of tubular structure simultaneously
Circumference soldering on the periphery of plug division and in the range of width W.
More specifically, the material of first plastic pipe 1 is can penetrate laser material, wave band and laser wavelength range
It reaches unanimity, the laser material that penetrates is added for engineering plastics such as PA, PC, ABS, PP by modification in routine techniques
Add light transmission agent be made its light transmittance requirement reach 40% and more than.The material of second plastic pipe 2 is impermeable laser material
Material, the laser material that can not penetrate are inhaled for engineering plastics such as PA, PC, ABS, PP by modification addition in routine techniques
Photo etching（Such as carbon black）Be made, absorptance require reach 90% and more than, it is ensured that laser energy loss it is smaller.Also, the first modeling
The melt temperature of the material of expects pipe part 1 and the material of the second plastic pipe 2 should be close, can prevent the appearance of the second plastic pipe 2
Face melt temperature is excessively high and influences the performance of the first plastic pipe 1, and melt temperature similar in the two can make the two laser welding
When compatibility it is more preferable, improve bonding quality and switching performance.
After the laser beam 4 passes through the first plastic pipe 1 in plug division 3, the appearance of the second plastic pipe 2 is exposed to
Face, the outer surface of the second plastic pipe 2 absorb outer surface thawing and, shape Nian Jie with the inner surface of the first plastic pipe 1 after laser
Into the welding region of cylinder, the welding can be formed effective sealing, resistance to compression, tension tubular structure.
It is vertical with tubular structure after 45 ° of speculums 440 reflect after laser is sent out described in the utility model embodiment,
Laser is not appeared in outside device from beginning to end, it is ensured that the safety of laser.
Laser welding apparatus described in the utility model embodiment is equipped at least one station, preferably two stations are set
There are two tubular structure clamping device 200, which can alternately weld, and improve utilization rate of equipment and installations.
Laser welding apparatus described in the utility model embodiment further includes the safety for being arranged on 100 top front side of device body
Light curtain 500, the water cooling for starting the start button 600 of tubular structure clamping device 200, being arranged on 100 side of device body
Machine 700.The control system specifically includes power control cabinet 110, host computer 120 and control flow 130 etc., to control entire laser
The complete machine running of welder.
The grafting of the first plastic pipe 1 and the second plastic pipe 2 described in the utility model embodiment can be plastics
Grafting between pipeline and plastic piping or the grafting between plastic piping and adapter of plastic, to the purposes of pipe fitting not
It is restricted.Preferably, 1 and second plastic pipe 2 of the first plastic pipe is cylinder tubulose, is conducive to improve welding essence
Degree.Laser welding apparatus described in the utility model embodiment is particularly suitable for that length is longer, tubular structure with spatial form,
Moving in rotation and horizontal a wide range of movement cannot be carried out in laser welding apparatus, optical path switching device 400 is utilized to realize tubulose knot
The circumference soldering on structure surface.
The parameters such as type of laser, wavelength, power described in the utility model embodiment in laser welding can be according to tubulose
The material and relevant physical parameter of structure are adjusted accordingly with matching, and the number of turns and spacing of laser beam 4 can be according to the close of product
Jacket tensile strength requires self-calibration.The device can be used for welding plastic nylon high pressure clutch pipe fitting assembly or plastics
Nylon electrical heating urea pipe assembly etc., such as the laser welding of connector and nylon pipeline.
By using the first plastic pipe 1 and the second plastic pipe after laser welding grafting in the utility model embodiment
2, compared with interference of the prior art connects, the medium generated by variation of ambient temperature, usage time, vibration can be fully solved
Hyposmosis, by leakage test（Room temperature, low temperature, high/low temperature）, long duration test, vibration test, 0ml/ is reduced to by 3ml/min
Min fundamentally solves low permeability flow；It welds and connects with spin friction of the prior art, be fully solved because high in welding process
By cleannes experimental test, no clast production is reduced to for 50 μm by particle maximum gauge for the material chips that fast spin friction generates
It is raw, no clast generation is reduced to for 100mg/ meters by granular mass, fundamentally solves the generation of clast.
Below with plastic nylon electrical heating urea pipe assembly pilot project, following test data is obtained：
1. pull-off test（Low temperature, room temperature, high temperature, high/low temperature alternation）(each temperature value tests the value of thrust of 5 times)
Standard requirement：
≥450N（-40℃）；≥450N（23℃）；≥115N（115℃）；≥450N（- 40 DEG C ~ 115 DEG C alternations）.
Result of the test：
-40℃（Low temperature）：1080N、1090N、1076N、1093N、1017N；
23 ℃（Room temperature）：590N、628N、624N、603N、589N；
115℃（High temperature）：273N、278N、298N、289N、287N；
- 40 DEG C ~ 115 DEG C alternations： 627N、621N、641N、635N、655N.
2. leakage test（High/low temperature alternation）
Standard requirement：
23 ± 2 DEG C, apply 1.034 MPa, keep 1 min, return to atmospheric pressure state；
80 ± 2 DEG C, 4h is kept, applies the pressure of 1.034 MPa, 1 min is kept, returns to atmospheric pressure state；
- 40 ± 2 DEG C, 4h is kept, applies the pressure of 1.034MPa, 1 min is kept, is then return to atmospheric pressure state；
It is required that bubble-free, No leakage.
Result of the test：
Pipe fitting bubble-free, No leakage.
3. pulsating fatigue is tested
Standard requirement：
（-40±2）DEG C,（120±2）DEG C each 100,000 times, from 0.2MPa（2bar）To 1.3MPa, 0.5Hz to 1Hz.
It is required that bubble-free, No leakage.
Result of the test：
Pipe fitting bubble-free, No leakage.
More than three laser welding techniques for testing the tubular structure that can embody the present utility model application for the anti-of product
Tensile strength, sealing performance, endurance quality have excellent performance in different temperature, pressure and loop test.
It is last it should be noted that above example is only to illustrate the technical solution of the utility model embodiment rather than right
It is limited, although the utility model embodiment is described in detail with reference to preferred embodiment, this field it is common
Technical staff should understand that still be modified or replaced equivalently the technical solution of the utility model embodiment, and this
A little ranges changed or equivalent replacement cannot also make modified technical solution be detached from the utility model embodiment technical solution.
Claims (9)
1. a kind of laser welding apparatus of tubular structure, which is characterized in that tubular structure includes the first plastic pipe and is plugged on the
Plug division is formed after the second plastic pipe in one plastic pipe, first plastic pipe and the second plastic pipe grafting；Institute
It states laser welding apparatus and includes device body and control system, the tubular structure clamping device being arranged in device body, laser hair
Light device and optical path switching device；During laser welding, laser light that the axial direction of the tubular structure is sent out with laser hole drilling illuminator
Shu Pinghang, and the axis of tubular structure is overlapped with the axis of optical path switching device, laser beam is after optical path switching device is converted
Reflex to plug division and perpendicular to the axis of tubular structure, the laser beam penetrates the first plastic pipe and in the second plastic tube
The outer surface circumference soldering of part.
2. a kind of laser welding apparatus of tubular structure as described in claim 1, which is characterized in that the tubular structure clamps dress
Put the first clamping module, the second clamping module of the second plastic pipe of clamping, control second including clamping the first plastic pipe
Plastic pipe is pressed into the first motor module of the first plastic pipe, control first clamps module and second clamps module horizontal displacement
The second motor module, the tubular structure clamping device is compressing, clamp and position the first plastic pipe and the second plastics
Pipe fitting makes the axial location of the first plastic pipe and the second plastic pipe be in the axial location of laser optical path conversion equipment.
3. a kind of laser welding apparatus of tubular structure as claimed in claim 2, which is characterized in that described first clamps module also
Equipped with guide-localization slot clamping and position the first plastic pipe and the second plastic pipe after grafting, the first motor mould
Group is additionally provided with pressure sensor to detect the pressure value that the second plastic pipe is pressed into the first plastic pipe, the second motor mould
Group is equipped with horizontal guide rail the first clamping module and second to be controlled to clamp the horizontal movement of module.
A kind of 4. laser welding apparatus of tubular structure as described in claim 1, which is characterized in that the light path converter device packet
Include one end closing, one end open cylinder unit, the laser beam that the laser hole drilling illuminator is sent out table out of closing one end
Face is projected, and the tubular structure is at the one end open of optical path switching device and the axis of tubular structure is in light path converting dress
On the axis put.
5. a kind of laser welding apparatus of tubular structure as claimed in claim 4, which is characterized in that the optical path switching device is also
Including be arranged in cylinder unit and set successively far from laser hole drilling illuminator collimating mirror, laser galvanometer, focus lamp and with it is poly-
The speculum that burnt mirror is set in 45 ° of angles.
6. a kind of laser welding apparatus of tubular structure as claimed in claim 5, which is characterized in that the speculum is 360 ° of rotations
The minute surface turned.
7. a kind of laser welding apparatus of tubular structure as described in claim 1, which is characterized in that the laser welding apparatus is equipped with
Two tubular structure clamping devices.
8. a kind of laser welding apparatus of tubular structure as described in claim 1, which is characterized in that further include and be arranged on device sheet
The safe light curtain of front side above body, for starting the start button of tubular structure clamping device, be arranged on device body side
Water cooling unit.
9. a kind of laser welding apparatus of tubular structure as described in claim 1, which is characterized in that first plastic pipe and
Second plastic pipe is cylinder tubulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201721781662.2U CN207579126U (en) | 2017-12-19 | 2017-12-19 | A kind of laser welding apparatus of tubular structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721781662.2U CN207579126U (en) | 2017-12-19 | 2017-12-19 | A kind of laser welding apparatus of tubular structure |
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| CN207579126U true CN207579126U (en) | 2018-07-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932919A (en) * | 2017-12-19 | 2018-04-20 | 长春亚大汽车零件制造有限公司 | A kind of laser welding apparatus of tubular structure |
| CN110594516A (en) * | 2019-09-11 | 2019-12-20 | 长春亚大汽车零件制造有限公司 | Connecting structure of plastic corrugated pipe and plastic connector |
| CN112644028A (en) * | 2020-12-01 | 2021-04-13 | 大族激光科技产业集团股份有限公司 | Plastic pipeline and laser welding method thereof |
-
2017
- 2017-12-19 CN CN201721781662.2U patent/CN207579126U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932919A (en) * | 2017-12-19 | 2018-04-20 | 长春亚大汽车零件制造有限公司 | A kind of laser welding apparatus of tubular structure |
| CN110594516A (en) * | 2019-09-11 | 2019-12-20 | 长春亚大汽车零件制造有限公司 | Connecting structure of plastic corrugated pipe and plastic connector |
| CN112644028A (en) * | 2020-12-01 | 2021-04-13 | 大族激光科技产业集团股份有限公司 | Plastic pipeline and laser welding method thereof |
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