CN104476770A - Plastic pipe fitting welding machine - Google Patents
Plastic pipe fitting welding machine Download PDFInfo
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- CN104476770A CN104476770A CN201410641174.6A CN201410641174A CN104476770A CN 104476770 A CN104476770 A CN 104476770A CN 201410641174 A CN201410641174 A CN 201410641174A CN 104476770 A CN104476770 A CN 104476770A
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Abstract
The invention discloses a plastic pipe fitting welding machine. The plastic pipe fitting welding machine comprises a power mechanism, an eccentric rotation mechanism and a mechanical vibration friction heat generation mechanism which are arranged on a frame, the power mechanism is arranged below the frame and is connected with the eccentric rotation mechanism through a synchronous belt, the eccentric rotation mechanism is connected with the mechanical vibration friction heat generation mechanism, two sides of the mechanical vibration friction heat generation mechanism are respectively provided with a positioning clamp and an axial boosting mechanism, and the center of the positioning clamp and the center of the mechanical vibration friction heat generation mechanism and the axial boosting mechanism are positioned in a same straight line. Thermal melting welding of transverse planes of equal diameter pipe fittings is carried out through adopting friction heat generation, so the use cost of thermal melting welding is reduced; and the axial boosting mechanism and the positioning clamp are combined, so the locking and loosening effects of pipe fittings can be realized, thereby the pipe fitting welding stress is uniform, and the welding quality and the welding efficiency of the pipe fittings are improved.
Description
Technical field
The invention belongs to plastics pipe welding technical field, relate to a kind of welder, especially relate to a kind of plastic tube welding machine.
Background technology
Plastic tube is generally is raw material with plastic resin, add stabilizing agent, lubricant etc., forms in tuber with the method for injection moulding through extrusion process.Because it has light weight, corrosion-resistant, good looking appearance, without features such as bad smell, handling ease, easy constructions, is therefore widely applied in architectural engineering.Along with the extensive use of plastic tube, to have also been obtained than indispensable attaching parts as plastic tube and develop rapidly, wherein joint for plastic tube is particularly outstanding, its product category is various, but different due to connected piece of existing joint for plastic tube, therefore there is material usage in the fabrication process large, processing cost is high, thus make selling price higher, and then affect product sales volume.In order to meet must asking of consumers in general, various isometrical plastic tube series of products are there are at present on the market.This kind of isometrical plastic tube product is when producing, and its requisite processing step is linked together by plastic tube identical for two calibers, in order to meet this production requirement, occurred much plastics pipe welding equipment at present.
Such as, publication number is that the Chinese patent of CN 203847824U discloses the plastic conduit that a kind of continuous welding lays continuously and moves welding tractor, comprise crawler body and chassis platform, the side of chassis platform is provided with cluster engine, revolution loop wheel machine, Hydraulic Station and operating console, revolution loop wheel machine is fixed on the platform of chassis, be provided with the hot-melt welding machine for plastic conduit welding at the opposite side of chassis platform, hot-melt welding machine is fixed on the platform of chassis.This technical scheme while plastic conduit is welded into long pipeline, by pipeline laying under ditch, can reduces construction equipment, reduces construction cost.But being, by hot-melt welding machine, two pipes are welded into a long tube owing to going back welding tractor when welding, after plastics pipe welding end need do cut process, carrying out electrical heating butt welding welding, welding machine complex process, and use sweat soldering to add welding cost; Large by this welding tractor volume, structure bulky, is only applicable to the connection of plastic conduit and lays, and is not suitable for the welding of isometrical plastic pipe; Existing plastics pipe welding equipment is without any augmentor simultaneously, therefore, causes seam bad, affect weldquality in welding process.
Summary of the invention
For solving the problem, the invention provides a kind of plastic tube welding machine.
The present invention is achieved by following technical solution.
A kind of plastic tube welding machine, comprise rack-mounted actuating unit, eccentric rotary mechanism and mechanical oscillation friction generates heat mechanism, described actuating unit is arranged on below frame, and be connected with eccentric rotary mechanism by Timing Belt, friction generates heat that mechanism is connected for described eccentric rotary mechanism and mechanical oscillation, friction generates heat that mechanism both sides are respectively arranged with positioning fixture and axial boosting mechanism in described mechanical oscillation, and being centrally located on same straight line of the center of positioning fixture and mechanical oscillation friction generates heat mechanism and axial boosting mechanism.
Described actuating unit comprises motor and is arranged on the active synchronization wheel of motor output end, described eccentric rotary mechanism comprises bearing block, eccentric shaft and connecting rod, wherein, eccentric shaft is arranged on bearing block, eccentric shaft is positioned at bearing block both sides and is separately installed with driven synchronizing wheel and connecting rod base, driven synchronizing wheel to be taken turns with active synchronization by Timing Belt and is connected, and connecting rod base is by bearing pin and rod hinge connection.
Friction generates heat that mechanism comprises rack slide, tooth bar guide pad and gear fixture in described mechanical oscillation, and wherein, gear fixture is arranged on above tooth bar guide pad respectively by hold-down support and pivoting support, above gear fixture, be also provided with fixture upper cover.
Described axial boosting mechanism comprises fixed guide block, slide-and-guide block, afterburning clamp base, eccentric wheel lever and lever hinged seat, wherein, eccentric wheel lever and lever hinged seat hinged, it is inner that slide-and-guide block is arranged on fixed guide block, afterburning clamp base is arranged on slide-and-guide block, and is connected with eccentric wheel lever by key seat.
The number of teeth of described active synchronization wheel is greater than the number of teeth of driven synchronizing wheel.
Described gear fixture bottom exterior arc surface is provided with the driving cog engaged with rack slide.
Described afterburning clamp base top is provided with compact heap.
Described eccentric wheel lever one end is also provided with bearing pin mounting groove, and bearing pin mounting groove one end is being provided with handle.
Described eccentric wheel lever is also provided with hinge hole.
The invention has the beneficial effects as follows:
Compared with prior art, by adopting, friction generates heat that channel angular pipe fitting end face carries out sweat soldering in the present invention, reduces the use cost adopting sweat soldering; Owing to being that end face directly docks, do not need to carry out any cut process, technique is simple, and weld seam is smaller simultaneously, almost cannot see, substantially increases the welding quality of product; The present invention combines with positioning fixture by adopting axial boosting mechanism, can realize to the locking of pipe fitting with unclamp effect, thus make pipe fitting welding uniform force, the welding quality of raising pipe fitting and welding efficiency.Compact conformation of the present invention, type is small and exquisite, is convenient to indoor and outdoor working environment, and simple, convenient, efficiency is high, and labor intensity is little, can in isometrical plastic pipe hot-melt welding technology field wide popularization and application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Eccentric rotary mechanism and mechanical oscillation friction generates heat mechanism's mounting structure schematic diagram in Fig. 2 the present invention;
Fig. 3 is the structural representation of axial boosting mechanism in the present invention;
Fig. 4 is the structural representation of eccentric wheel lever in the present invention;
Fig. 5 is the structural representation of middle gear fixture of the present invention;
Fig. 6 is the mounting structure schematic diagram of middle gear fixture of the present invention;
Fig. 7 is the structural representation of fixture upper cover in the present invention;
Fig. 8 is that in the present invention, axial boosting mechanism removes the structural representation after fixed guide block and eccentric wheel lever;
Fig. 9 is the structural representation of middle rack slide block of the present invention;
Figure 10 is the structural representation of eccentric shaft in the present invention;
Figure 11 is the mounting structure schematic diagram of plastic pipe and pipe joint in the present invention;
Figure 12 is the structural representation that in the present invention, plastic pipe and pipe joint install all fixtures of rear locking.
In figure: 1-actuating unit, 2-positioning fixture, 3-eccentric rotary mechanism, 4-mechanical oscillation friction generates heat mechanism, 5-is afterburning structure axially, 6-frame, 11-motor, 12-active synchronization is taken turns, 21-positioning seat, 22-locating cover, 23-installing hole, the driven synchronizing wheel of 31-, 32-bearing block, 33-eccentric shaft, 34-connecting rod base, 35-connecting rod, 41-rack slide, 42-hold-down support, 43-tooth bar guide pad, 44-gear fixture, 45-pivoting support, 46-fixture upper cover, 51-fixed guide block, 52-slide-and-guide block, the afterburning clamp base of 53-, 54-compact heap, 55-key seat, 56-eccentric wheel lever, 57-lever hinged seat, 58-handle, 441-driving cog, 561-bearing pin mounting groove, 562-hinge hole.
Detailed description of the invention
Technical scheme of the present invention is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figures 1 to 10, a kind of plastic tube welding machine of the present invention, comprise the actuating unit 1 be arranged in frame 6, eccentric rotary mechanism 3 and mechanical oscillation friction generates heat mechanism 4, described actuating unit 1 is arranged on below frame 6, and be connected with eccentric rotary mechanism 3 by Timing Belt, friction generates heat that mechanism 4 is connected for described eccentric rotary mechanism 3 and mechanical oscillation, friction generates heat that mechanism 4 both sides are respectively arranged with positioning fixture 2 and axial boosting mechanism 5 in described mechanical oscillation, and being centrally located on same straight line of the center of positioning fixture 2 and mechanical oscillation friction generates heat mechanism 4 and axial boosting mechanism 5.Adopt the technical program, actuating unit 1 drives eccentric rotary mechanism 3 to rotate by Timing Belt, eccentric rotary mechanism 3 will be converted to mechanical oscillation friction generates heat the linear reciprocating motion of mechanism 4, thus the other end of two tubing or pipe fitting is clamped in mechanical oscillation respectively friction generates heat mechanism 4 produces friction, apply certain pressure by axial augmentor 5 pairs of tubing or pipe fitting to pipe box direction simultaneously, contact surface is made to produce frictional heat, high temperature melting, after tubing or pipe fitting reach expection molten condition, the motion of pipe box is stopped, tubing in molten condition or pipe fitting cooling, be solidified as one, become tubing or pipe fitting that permanent bond is integrated.
Described actuating unit 1 comprises motor 11 and is arranged on the active synchronization wheel 12 of motor 11 output, described eccentric rotary mechanism 3 comprises bearing block 32, eccentric shaft 33 and connecting rod 35, wherein, eccentric shaft 33 is installed on bearing blocks 32, eccentric shaft 33 is positioned at bearing block 32 both sides and is separately installed with driven synchronizing wheel 31 and connecting rod base 34, driven synchronizing wheel 31 is taken turns 12 by Timing Belt and active synchronization and is connected, connecting rod base 34 by bearing pin and connecting rod 35 hinged.
Friction generates heat that mechanism 4 comprises rack slide 41, tooth bar guide pad 43 and gear fixture 44 in described mechanical oscillation, wherein, gear fixture 44 is arranged on above tooth bar guide pad 43 respectively by hold-down support 42 and pivoting support 45, above gear fixture 44, be also provided with fixture upper cover 46.
Described axial boosting mechanism 5 comprises fixed guide block 51, slide-and-guide block 52, afterburning clamp base 53, eccentric wheel lever 56 and lever hinged seat 57, wherein, eccentric wheel lever 56 is hinged with lever hinged seat 57, it is inner that slide-and-guide block 52 is arranged on fixed guide block 51, afterburning clamp base 53 is arranged on slide-and-guide block 52, and is connected with eccentric wheel lever 56 by key seat 55.
Described positioning fixture 2 comprises positioning seat 21 and locating cover 22, and described locating cover 22 is bolted on positioning seat 21.Forms an installing hole 23 after locating cover 22 is fixing with positioning seat 21, the die cavity center that the center of described installing hole 23 and gear fixture 44 and fixture upper cover 46 are formed on same straight line, to ensure the axiality that pipe fitting installation location is.
The number of teeth of described active synchronization wheel 12 is greater than the number of teeth of driven synchronizing wheel 31.Rotating speed can be promoted like this by the number of teeth difference of two synchronizing wheels.
Described gear fixture 44 bottom exterior arc surface is provided with the driving cog 441 engaged with rack slide 41.Like this, when rack slide 41 moves, driving cog 441 on rack slide 41 and gear fixture 44 engages, and driven gear fixture 44 does forward and reverse, low-angle, back and forth high speed rotation together, make to produce between two tubing in the axial inwall of gear fixture 44 and insertion fixture or pipe fitting to rub, simultaneously by axially to boosting mechanism 5 pairs of tubing or pipe fitting to square fixture to applying certain pressure, make contact surface produce frictional heat, high temperature melting, thus realize the sweat soldering of pipe fitting.
Described afterburning clamp base 53 top is provided with compact heap 54.Compact heap 54 is connected with afterburning clamp base 53 by bolt, in use, first unclamps bolt and opens compact heap 54, then install jointed tubular workpieces fusion, after pipe fitting installs, rotatably compresses block 54 to pipe fitting installation site, by bolt tightening.
As shown in Figure 4, described eccentric wheel lever 56 one end is also provided with bearing pin mounting groove 561, and bearing pin mounting groove 561 one end is being provided with handle 58.
Described eccentric wheel lever 56 is also provided with hinge hole 562.For eccentric wheel lever 56 is hinged on lever hinged seat 57.
Above-mentioned tooth bar guide pad 43 is T-slot guide block structure, and namely on tooth bar guide pad 43, be provided with T-slot, rack slide 41 is arranged in T-slot, by T-slot structure, can ensure that rack slide 41 does linear movement in T-slot, safe and reliable.
Above-mentioned fixed guide block 51 is T-shaped fit structure with slide-and-guide block 52, namely on fixed guide block 51, T-slot is processed with, slide-and-guide block 52 is designed to the T-shaped structure coordinated with T-slot, like this, when handle about 58 pressurizes, slide-and-guide block 52 and the assembly that is connected as a single entity with slide-and-guide block 52 move left and right along the T-slot direction of fixed guide block 51, thus reach the effect that locking is afterburning and unclamp.
In technique scheme, described gear fixture 44 is arranged on above rack slide 41 by pivoting support 45 and hold-down support 42, fixture upper cover 46 is arranged on above gear fixture 44, wherein, fixture upper cover 46 one end is connected with pivoting support 45 by bearing pin, the other end by bolt-locking on hold-down support 42; Gear fixture 44 and fixture upper cover 46 install the closed rear die cavity forming an energy receive pipe elements, and the diameter of this die cavity is greater than jointed tubular workpieces diameter fusion, and is reserved with the fit-up gap of 0.3mm.Owing to being provided with the driving cog 441 engaged with rack slide 41 on the arc surface of gear fixture 44.Therefore, operationally, in the die cavity directly jointed tubular workpieces insertion fixture upper cover 46 fusion and gear fixture 44 formed, rack slide 41 is driven to move by eccentric rotary mechanism 3, rack slide 41 and gear fixture 44 engage, and driven gear fixture 44 is done forward and reverse together, low-angle, the rotation of reciprocal high speed, make to produce between two tubing in the axial inwall of gear fixture 44 and insertion die cavity or pipe fitting to rub, simultaneously by axial boosting mechanism 5 pairs of tubing or pipe fitting to square fixture to applying certain pressure, contact surface is made to produce frictional heat, high temperature melting, thus realize the sweat soldering of pipe fitting.
The present invention in use, first installs fusion joining two pipes together and pipe fitting; After pipe as shown in figure 11 and pipe fitting install, locking is so fixture (as shown in figure 12); Welding can be started after installing pipe and pipe fitting.As Fig. 1, Fig. 2, shown in Fig. 3, when sweat soldering, motor 11 drives active synchronization to take turns 12 and rotates, driven synchronizing wheel 31 is driven to rotate by Timing Belt, and promote rotating speed due to the number of teeth difference of two synchronizing wheels, the eccentric shaft 33 coaxial with driven synchronizing wheel 31 is given in its power transmission, eccentric shaft 33 is connected with connecting rod 35 one end by connecting rod base 34, the other end of connecting rod 35 is connected with rack slide 41, operationally, the high-speed rotation of eccentric shaft 33 is converted to rack slide 41 and does reciprocating linear motion by connecting rod 35, rack slide 41 again by power transmission to gear fixture 44, fixture upper cover 46 and gear fixture 44 are assembled together, thus make gear fixture 44 and fixture upper cover 46 inwall with its axle center for datum mark, do forward and reverse, low-angle, the rotation of reciprocal high speed, (other end of two tubing or pipe fitting is clamped on built-up jig respectively) between two tubing in the axial inwall of fixture and insertion fixture or pipe fitting is made to produce and rub, apply certain pressure by axial boosting mechanism 5 pairs of tubing or pipe fitting to fixture inwall direction simultaneously, contact surface is made to produce frictional heat, high temperature melting, after tubing or pipe fitting reach expection molten condition, the motion of pipe box is stopped (motor stops operating), tubing in molten condition or pipe fitting cooling, be solidified as one, become tubing or pipe fitting that permanent bond is integrated.
Operation principle of the present invention is: when starting to weld, actuating unit driven by motor active synchronization wheel rotates, the driven synchronizing wheel speed-raising of eccentric rotary mechanism is driven to rotate by Timing Belt, the rack slide of make the connecting rod of eccentric rotary mechanism pull mechanical oscillation friction generates heat mechanism, rack slide driven gear fixture is done to come and go at a high speed to rotate, and pipe and pipe fitting end face high-speed friction heat-dissipating are welded together.After whole pipe and pipe fitting welding complete, open all fixtures and take out product, welding required time is no more than 2 seconds, greatly improves welding efficiency.
Claims (9)
1. a plastic tube welding machine, it is characterized in that: comprise the actuating unit (1) be arranged in frame (6), eccentric rotary mechanism (3) and mechanical oscillation friction generates heat mechanism (4), described actuating unit (1) is arranged on frame (6) below, and be connected with eccentric rotary mechanism (3) by Timing Belt, friction generates heat that mechanism (4) is connected for described eccentric rotary mechanism (3) and mechanical oscillation, friction generates heat that mechanism (4) both sides are respectively arranged with positioning fixture (2) and axial boosting mechanism (5) in described mechanical oscillation, and being centrally located on same straight line of the center of positioning fixture (2) and mechanical oscillation friction generates heat mechanism (4) and axial boosting mechanism (5).
2. a kind of plastic tube welding machine according to claim 1, it is characterized in that: described actuating unit (1) comprises motor (11) and is arranged on active synchronization wheel (12) of motor (11) output, described eccentric rotary mechanism (3) comprises bearing block (32), eccentric shaft 33 and connecting rod (35), wherein, eccentric shaft (33) is arranged on bearing block (32), eccentric shaft (33) is positioned at bearing block (32) both sides and is separately installed with driven synchronizing wheel (31) and connecting rod base (34), driven synchronizing wheel (31) is taken turns (12) by Timing Belt with active synchronization and is connected, connecting rod base (34) by bearing pin and connecting rod (35) hinged.
3. a kind of plastic tube welding machine according to claim 1, it is characterized in that: friction generates heat that mechanism (4) comprises rack slide (41), tooth bar guide pad (43) and gear fixture (44) in described mechanical oscillation, wherein, gear fixture (44) is arranged on tooth bar guide pad (43) top respectively by hold-down support (42) and pivoting support (45), is also provided with fixture upper cover (46) in gear fixture (44) top.
4. a kind of plastic tube welding machine according to claim 1, it is characterized in that: described axial boosting mechanism (5) comprises fixed guide block (51), slide-and-guide block (52), afterburning clamp base (53), eccentric wheel lever (56) and lever hinged seat (57), wherein, eccentric wheel lever (56) is hinged with lever hinged seat (57), it is inner that slide-and-guide block (52) is arranged on fixed guide block (51), afterburning clamp base (53) is arranged on slide-and-guide block (52), and be connected with eccentric wheel lever (56) by key seat (55).
5. a kind of plastic tube welding machine according to claim 2, is characterized in that: the number of teeth of described active synchronization wheel (12) is greater than the number of teeth of driven synchronizing wheel (31).
6. a kind of plastic tube welding machine according to claim 3, is characterized in that: described gear fixture (44) bottom exterior arc surface is provided with the driving cog (441) engaged with rack slide (41).
7. a kind of plastic tube welding machine according to claim 4, is characterized in that: described afterburning clamp base (53) top is provided with compact heap (54).
8. a kind of plastic tube welding machine according to claim 4, it is characterized in that: described eccentric wheel lever (56) one end is also provided with bearing pin mounting groove (561), and bearing pin mounting groove (561) one end is being provided with handle (58).
9. a kind of plastic tube welding machine according to claim 4, is characterized in that: described eccentric wheel lever (56) is also provided with hinge hole (562).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410641174.6A CN104476770B (en) | 2014-11-13 | 2014-11-13 | A kind of plastic tube welding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410641174.6A CN104476770B (en) | 2014-11-13 | 2014-11-13 | A kind of plastic tube welding machine |
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| CN104476770A true CN104476770A (en) | 2015-04-01 |
| CN104476770B CN104476770B (en) | 2016-09-14 |
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| CN201410641174.6A Active CN104476770B (en) | 2014-11-13 | 2014-11-13 | A kind of plastic tube welding machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110641037A (en) * | 2019-09-25 | 2020-01-03 | 丁燕燕 | Auxiliary installer for building plastic pipeline joint |
| CN111958992A (en) * | 2020-08-14 | 2020-11-20 | 芜湖新磊塑胶科技有限公司 | Uniform feeding tool for plastic pipes |
| CN115091765A (en) * | 2022-05-25 | 2022-09-23 | 长春亚大汽车零件制造有限公司 | Non-metal pipeline and joint induction type welding method and device |
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| JPS6110439A (en) * | 1984-02-28 | 1986-01-17 | Osaka Gas Co Ltd | Changeover device of automatic operation/manual operation for locking device of fusion welder for resin pipe |
| US5277744A (en) * | 1990-12-27 | 1994-01-11 | Hydroacoustics Inc. | Friction welder having a drive which produces orbital motion |
| CN1872481A (en) * | 2006-06-23 | 2006-12-06 | 首都航天机械公司 | Friction welding installation |
| CN202753442U (en) * | 2012-06-21 | 2013-02-27 | 林慧鹏 | Water feeding and draining plastic tube friction welding machine |
| CN203076780U (en) * | 2012-12-26 | 2013-07-24 | 常州福伦特无铅焊料有限公司 | Butt welding machine for production of soldering wires |
| CN204322512U (en) * | 2014-11-13 | 2015-05-13 | 贵州黔南科技塑业有限公司 | A kind of isometrical plastic pipe welding equipment |
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2014
- 2014-11-13 CN CN201410641174.6A patent/CN104476770B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6110439A (en) * | 1984-02-28 | 1986-01-17 | Osaka Gas Co Ltd | Changeover device of automatic operation/manual operation for locking device of fusion welder for resin pipe |
| US5277744A (en) * | 1990-12-27 | 1994-01-11 | Hydroacoustics Inc. | Friction welder having a drive which produces orbital motion |
| CN1872481A (en) * | 2006-06-23 | 2006-12-06 | 首都航天机械公司 | Friction welding installation |
| CN202753442U (en) * | 2012-06-21 | 2013-02-27 | 林慧鹏 | Water feeding and draining plastic tube friction welding machine |
| CN203076780U (en) * | 2012-12-26 | 2013-07-24 | 常州福伦特无铅焊料有限公司 | Butt welding machine for production of soldering wires |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110641037A (en) * | 2019-09-25 | 2020-01-03 | 丁燕燕 | Auxiliary installer for building plastic pipeline joint |
| CN111958992A (en) * | 2020-08-14 | 2020-11-20 | 芜湖新磊塑胶科技有限公司 | Uniform feeding tool for plastic pipes |
| CN115091765A (en) * | 2022-05-25 | 2022-09-23 | 长春亚大汽车零件制造有限公司 | Non-metal pipeline and joint induction type welding method and device |
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| CN104476770B (en) | 2016-09-14 |
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Effective date of registration: 20200629 Address after: Room 108, building 5, No. 24, xiegangchong Road, Duyun City, Qiannan Buyi and Miao Autonomous Prefecture, Guizhou Province 558000 Patentee after: Wang Yueyong Address before: 558000 Guizhou Province, Qiannan Buyei and Miao Autonomous Prefecture of Tuyun city the Willow Street Village Patentee before: GUIZHOU QIANNAN TECHNOLOGY PLASTIC INDUSTRY Co.,Ltd. |
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Effective date of registration: 20210708 Address after: 558000 plant 504, Gantang Town, Duyun City, Qiannan Buyi and Miao Autonomous Prefecture, Guizhou Province Patentee after: DUYUN SHUANGCHENG MACHINERY EQUIPMENT Co.,Ltd. Address before: 558000 room 108, building 5, 24 xieguanchong Road, Duyun City, Qiannan Buyi and Miao Autonomous Prefecture, Guizhou Province Patentee before: Wang Yueyong |
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