CN116714259A - Plastic pipe fitting welding set - Google Patents

Plastic pipe fitting welding set Download PDF

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Publication number
CN116714259A
CN116714259A CN202310749229.4A CN202310749229A CN116714259A CN 116714259 A CN116714259 A CN 116714259A CN 202310749229 A CN202310749229 A CN 202310749229A CN 116714259 A CN116714259 A CN 116714259A
Authority
CN
China
Prior art keywords
pipe
arc
fixedly connected
gear
plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202310749229.4A
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Chinese (zh)
Inventor
查鹏飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202310749229.4A priority Critical patent/CN116714259A/en
Publication of CN116714259A publication Critical patent/CN116714259A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention discloses a plastic pipe fitting welding device which comprises two pipe sleeves, wherein a clamping assembly for clamping a plastic pipe fitting is arranged in each pipe sleeve, an annular groove is formed in the side wall of each pipe sleeve, a gear ring is rotationally connected to the side wall of each annular groove, a mechanism groove is further formed in the side wall of each pipe, a transmission gear is rotationally connected to the mechanism grooves, the mechanism grooves are communicated with the annular grooves, the transmission gears are meshed with the gear rings, a connecting plate is fixedly connected to one side wall of each gear ring, and an adjusting screw is connected to each connecting plate in a threaded mode. According to the invention, the two plastic pipes are fixed in the pipe sleeve through the clamping assembly, the heating box provided with the vortex coil is driven to continuously rotate around the two plastic pipes to heat and fuse, so that the pipe orifices of the two pipes can be connected together in a flat manner, meanwhile, the melting part of the heating box can be smoothed in the process of rotating around the plastic pipes, and the appearance effect of the welded composite pipe is improved.

Description

Plastic pipe fitting welding set
Technical Field
The invention relates to the technical field of plastic pipe fitting processing, in particular to a plastic pipe fitting welding device.
Background
In the field of plastic pipe production and processing, it is often necessary to weld two pipes together by hot melt welding to obtain the desired composite pipe.
In a device for welding plastic pipes by hot melting, as disclosed in application number 201821639365.9, a joint and a plastic pipe are driven by a first sliding block and a second sliding block to be heated close to a heating head during welding, and the joint and the plastic pipe are butted after the heating is completed. The welding is heated and melted first and then is in butt joint, so that the pipe orifice melting part is cooled and hardened easily in the butt joint process, and the problem is more remarkable: the pipe orifices are seriously deformed after melting, and then when the pipe orifices are butted, the two pipe orifices are difficult to match, so that the welded composite pipeline is inclined and the like, and the quality of the welded composite pipeline product is affected.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a plastic pipe fitting welding device.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a plastics pipe fitting welding set, includes two pipe boxes, the pipe box is inside to be equipped with the centre gripping subassembly that carries out the centre gripping to plastics pipe fitting, the ring channel has been seted up to the lateral wall of pipe box, the ring channel internal rotation is connected with the ring gear, the mechanism groove has still been seted up to the lateral wall of pipeline, the mechanism inslot internal rotation is connected with drive gear, just the mechanism groove communicates with each other with the ring channel, drive gear and ring gear meshing, one of them the lateral wall fixedly connected with connecting plate of ring gear, threaded connection has adjusting screw on the connecting plate, just adjusting screw's lower extreme rotation is connected with the heating box, install vortex coil in the heating box, two the equal fixedly connected with of relative lateral wall of pipe box a plurality of electro-magnet, a plurality of the electro-magnet is along pipe box equidistant distribution all around.
Preferably, the clamping assembly comprises an arc upper clamp and an arc lower clamp, the two ends of the arc upper clamp and the two ends of the arc lower clamp are fixedly connected with connecting plates, the two connecting plates are connected together through locking bolts, and a rotating mechanism for enabling the clamping assembly to rotate back and forth is further arranged in the mechanism groove.
Preferably, the rotating mechanism comprises a sector gear which is rotationally connected in a mechanism groove, the sector gear is fixedly connected with an adjacent transmission gear, the upper end of the arc upper clamp is fixedly connected with a sector rack, the sector gear is meshed with the sector rack, an arc groove is formed in the inner wall of the pipe sleeve, a connecting rod is connected in the arc groove in a sliding manner, the connecting rod is connected to the inner wall of the arc groove through a spring, and the connecting rod is fixedly connected to the side wall of the arc upper clamp.
Preferably, guide grooves are formed in two opposite inner walls of the arc-shaped groove, guide blocks are fixedly connected to two side walls of the connecting rod, and the guide blocks are slidably connected in the adjacent guide grooves.
Preferably, the transmission gears on the two pipe sleeves are fixedly connected together through a rotating shaft, one of the pipe sleeves is fixedly connected with a driving motor, and an output shaft of the driving motor is fixedly connected with the adjacent transmission gear.
Preferably, the electromagnets on the side walls of the two sleeves are in one-to-one correspondence, and the heating box is made of metal materials.
The invention has the following beneficial effects:
1. through arranging parts such as the pipeline, the clamping assembly, the gear ring and the transmission gear, the two plastic pipes can be fixed in the pipe sleeve in advance through the clamping assembly, meanwhile, the heating box with the vortex coil is driven to continuously rotate around the two plastic pipes to heat and fuse, the pipe orifices of the two pipelines can be ensured to be connected together in a straight manner, meanwhile, the melting part of the heating box can be smoothed in the process of rotating around the plastic pipes, and the appearance effect of the welded composite pipeline is improved;
2. through setting up slewing mechanism, can be in the heating fusion in-process of two plastic tubing for two pipelines are reverse rotation back and forth, can promote two mouth of pipe to melt the inseparable, firm bonding together of part, promotes the welding strength of plastic tubing.
Drawings
FIG. 1 is a schematic diagram of a plastic pipe welding device according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the structure at B-B in FIG. 1;
FIG. 4 is a schematic cross-sectional view of the structure at C-C in FIG. 1;
FIG. 5 is a schematic diagram of the cross-sectional structure at D-D in FIG. 1.
In the figure: the device comprises a pipe sleeve 1, a mechanism groove 2, an arc-shaped lower clamp 3, an arc-shaped upper clamp 4, a connecting plate 5, a locking bolt 6, a transmission gear 7, a sector gear 8, a rotating shaft 9, an electromagnet 10, an annular groove 11, a gear ring 12, a plastic pipe 13, a sector rack 14, a connecting plate 15, an adjusting screw 16, a heating box 17, an eddy current coil 18, a connecting rod 19, a guide block 20, a spring 21, a guide groove 22 and an arc-shaped groove 23.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-5, a plastic pipe fitting welding device comprises two pipe sleeves 1, a clamping component for clamping the plastic pipe fitting is arranged in each pipe sleeve 1, an annular groove 11 is formed in the side wall of each pipe sleeve 1, a gear ring 12 is connected in a rotary mode in each annular groove 11, a mechanism groove 2 is further formed in the side wall of each pipe sleeve 1, a transmission gear 7 is connected in the rotary mode in each mechanism groove 2, the mechanism grooves 2 are communicated with the annular grooves 11, the transmission gears 7 are meshed with the gear rings 12, a connecting plate 15 is fixedly connected to the side wall of one gear ring 12, an adjusting screw 16 is connected to the connecting plate 15 in a threaded mode, a heating box 17 is connected to the lower end of each adjusting screw 16 in a rotary mode, vortex coils 18 are installed in the heating box 17, a plurality of electromagnets 10 are fixedly connected to the opposite side walls of the two pipe sleeves 1, and the electromagnets 10 are distributed at equal intervals along the periphery of each pipe sleeve 1. The electromagnets 10 on the side walls of the two sleeves 1 are in one-to-one correspondence, and the heating boxes 17 are made of metal materials.
When the electromagnets 10 opposite to the two sleeves 1 are supplied with high-frequency alternating current, the magnetic field generated between the two electromagnets 10 is also a high-frequency alternating magnetic field, and in the alternating magnetic field, the higher the magnetic field changes, the larger the induced electromotive force is, the stronger the eddy current generated by the eddy current coil 18 is, and the generated eddy current can heat the heating box 17 made of metal materials so as to melt and weld the pipe orifice of the plastic pipe 13.
The transmission gears 7 on the two pipe sleeves 1 are fixedly connected together through a rotating shaft 9, and a driving motor is fixedly connected to one of the pipe sleeves 1, and an output shaft of the driving motor is fixedly connected with the adjacent transmission gears 7.
The clamping assembly comprises an arc upper clamp 4 and an arc lower clamp 3, the two ends of the arc upper clamp 4 and the two ends of the arc lower clamp 3 are fixedly connected with connecting plates 5, the two connecting plates 5 are connected together through locking bolts 6, and a rotating mechanism for enabling the clamping assembly to rotate back and forth is further arranged in the mechanism groove 2. The rotating mechanism comprises a sector gear 8 which is rotationally connected in the mechanism groove 2, the sector gear 8 is fixedly connected with an adjacent transmission gear 7, the upper end of the arc upper clamp 4 is fixedly connected with a sector rack 14, the sector gear 8 is meshed with the sector rack 14, an arc groove 23 is formed in the inner wall of the pipe sleeve 1, a connecting rod 19 is slidably connected in the arc groove 23, the connecting rod 19 is connected on the inner wall of the arc groove 23 through a spring 21, and the connecting rod 19 is fixedly connected on the side wall of the arc upper clamp 4. It should be noted that, when the sector gear 8 rotates to a state of meshing with the sector rack 14, as shown in the left pipe sleeve 1 of fig. 1, the sector rack 14 will be driven to rotate forward, the sector rack 14 can drive the arc upper clip 4 to rotate forward, the arc upper clip 4 can make the whole clamping assembly and the plastic pipe 13 rotate synchronously, in addition, the arc upper clip 4 can also drive the connecting rod 19 on the side wall of the arc upper clip to rotate synchronously, and the spring 21 is compressed (refer to fig. 5);
when the sector gear 8 rotates to be separated from the sector rack 14, as shown in the part of the pipe sleeve 1 on the right side of fig. 1, the spring 21 can automatically stretch and recover, and push the connecting rod 19 to reversely rotate and reset, the connecting rod 19 drives the arc-shaped upper clamp 4 and the whole clamping assembly to reversely rotate with the plastic pipe 13, so that the distribution positions of the sector gears 8 on the left and right pipe sleeves 1 are opposite, and the rotation directions of the clamping assemblies on the left and right pipe sleeves 1 and the plastic pipe 13 are always opposite, so that the pipe orifice part of the plastic pipe 13 can be tightly and firmly bonded after being heated and fused.
Guide grooves 22 are formed in two opposite inner walls of the arc-shaped groove 23, guide blocks 20 are fixedly connected to two side walls of the connecting rod 19, and the guide blocks 20 are slidably connected in the adjacent guide grooves 22. It should be noted that, referring to fig. 1 and 5, by providing the guide groove 22 and the guide block 20, the connecting rod 19 can be stably slidably disposed in the arc groove 23, and cannot be separated or fall off, and meanwhile, can only slide along the arc path of the arc groove 23, so as to match the back-and-forth rotation of the whole clamping assembly.
In the invention, the plastic pipes 13 to be welded are placed in the pipe sleeves 1, the plastic pipes 13 are positioned between the arc-shaped upper clamps 4 and the arc-shaped lower clamps 3, and then the plastic pipes 13 in the two pipe sleeves 1 are moved, so that the pipe orifices of the two plastic pipes 13 are attached together.
At this time, the locking bolt 6 is screwed, so that the arc upper clamp 4 is close to the connecting plate 5 on the arc lower clamp 3, and the arc upper clamp 4 and the arc lower clamp 3 are close to each other, so that the plastic pipe 13 can be fixed. After the fixing is completed, the downward moving position of the adjusting screw 16 can be adjusted by screwing the adjusting screw 16, so that the heating box 17 at the lower end of the adjusting screw 16 can be contacted with the joint of the two plastic pipes 13.
Then, high-frequency alternating current is supplied to each electromagnet 10, a high-frequency alternating magnetic field can be generated between the electromagnets 10 on the two pipe sleeves 1, the driving motor is started again to drive the transmission gear 7 to rotate, the transmission gear 7 drives the gear ring 12 to rotate, the connecting plate 15 on the side wall of the gear ring 12 also rotates along with the gear ring, the connecting plate 15 drives the heating box 17 to rotate through the adjusting screw 16, the heating box 17 rotates around the joint of the two plastic pipes 13, the eddy current coil 18 inside the heating box 17 is always in the alternating magnetic field, induced electromotive force is excited, and therefore, the eddy current coil 18 and the heating box 17 made of metal materials generate high temperature. The high-temperature heating box 17 can heat and fuse and connect the pipe orifice joints of the two plastic pipes 13 when rotating around the joint of the two plastic pipes 13, and can finish the welding work of the plastic pipes 13. Compared with the welding mode of heating, fusing and connecting in advance, the device enables the pipe orifices of the two plastic pipes 13 to be spliced together in a straight mode in advance, fixes the plastic pipes 13 by utilizing the clamping assembly, and carries out heating welding after fixing, so that the pipe orifices of the two plastic pipes 13 can be ensured to be connected together in a straight mode, meanwhile, the heating box 17 can also smear the melting part in the process of rotating around the plastic pipes 13, and the appearance effect of the welded composite pipeline is improved.
More prominently, the driving motor drives the sector gears 8 on the two pipe sleeves 1 to rotate in the process of driving the transmission gears 7 to rotate, and the sector gears 8 are meshed with the sector racks 14 on the arc-shaped upper clamps 4 periodically in the rotation process. When the sector gear 8 is meshed with the sector rack 14, the sector rack 14 can be driven to rotate, the sector rack 14 drives the whole clamping assembly to rotate through the arc upper clamp 4, and when the arc upper clamp 4 rotates, the connecting rod 19 on the side wall of the arc upper clamp is driven to slide in the arc groove 23, and the spring 21 is contracted, referring to fig. 1 and 5; when the sector gear 8 is separated from the sector rack 14, the spring 21 stretches and recovers, the connecting rod 19 can be pushed to move back and reset, and the connecting rod 19 also pushes the whole clamping assembly to rotate and reset. Therefore, in the rotation process of the sector gear 8, the clamping assembly formed by the arc-shaped upper clamp 4 and the arc-shaped lower clamp 3 can rotate back and forth under the cooperation of the sector rack 14, the connecting rod 19 and the spring 21, so that the plastic pipe 13 fixed by the clamping assembly also rotates back and forth, and referring to fig. 1, the sector gears 8 on the left and right pipe sleeves 1 are respectively in vertical downward and vertical upward states, so that the back and forth rotation directions of the clamping assemblies and the plastic pipe 13 on the left and right pipe sleeves 1 are always opposite (see the description of the sector gear 8 for specific reasons), and therefore, in the welding process, the two plastic pipes 13 continuously rotate back and forth in opposite directions, so that pipe orifice parts can be promoted to be tightly fused and bonded together, and the welding strength of the plastic pipe 13 is improved.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (6)

1. The utility model provides a plastics pipe fitting welding set, includes two pipe boxes (1), its characterized in that, the inside centre gripping subassembly that carries out the centre gripping to plastics pipe fitting that is equipped with of pipe box (1), ring channel (11) have been seted up to the lateral wall of pipe box (1), ring channel (11) internal rotation is connected with ring gear (12), mechanism groove (2) internal rotation is connected with drive gear (7), just mechanism groove (2) communicate with each other with ring channel (11), drive gear (7) and ring gear (12) meshing, one of them the lateral wall fixedly connected with connecting plate (15) of ring gear (12), threaded connection has adjusting screw (16) on connecting plate (15), just the lower extreme rotation of adjusting screw (16) is connected with heating box (17), install vortex coil (18) in heating box (17), two the relative lateral wall of pipe box (1) all fixedly connected with a plurality of electro-magnet (10), a plurality of electro-magnet (10) are equidistant along (1) all around.
2. The plastic pipe fitting welding device according to claim 1, wherein the clamping assembly comprises an arc upper clamp (4) and an arc lower clamp (3), two ends of the arc upper clamp (4) and two ends of the arc lower clamp (3) are fixedly connected with connecting plates (5), the two connecting plates (5) are connected together through locking bolts (6), and a rotating mechanism for enabling the clamping assembly to rotate back and forth is further arranged in the mechanism groove (2).
3. The welding device for plastic pipes according to claim 2, characterized in that the rotating mechanism comprises a sector gear (8) which is rotatably connected in a mechanism groove (2), the sector gear (8) is fixedly connected with an adjacent transmission gear (7), the upper end of the arc-shaped upper clamp (4) is fixedly connected with a sector rack (14), the sector gear (8) is meshed with the sector rack (14), an arc groove (23) is formed in the inner wall of the pipe sleeve (1), a connecting rod (19) is connected in the arc groove (23) in a sliding manner, and the connecting rod (19) is connected on the inner wall of the arc groove (23) through a spring (21), and the connecting rod (19) is fixedly connected on the side wall of the arc-shaped upper clamp (4).
4. A plastic pipe fitting welding device according to claim 3, characterized in that the arc-shaped grooves (23) are provided with guide grooves (22) on two opposite inner walls, guide blocks (20) are fixedly connected to two side walls of the connecting rod (19), and the guide blocks (20) are slidably connected in the adjacent guide grooves (22).
5. A plastic pipe fitting welding device according to claim 1, characterized in that the transmission gears (7) on two pipe sleeves (1) are fixedly connected together through a rotating shaft (9), and wherein a driving motor is fixedly connected to one pipe sleeve (1), and the output shaft of the driving motor is fixedly connected with the adjacent transmission gear (7).
6. A plastic pipe fitting welding device according to claim 1, characterized in that the electromagnets (10) on the side walls of the two pipe sleeves (1) are in one-to-one correspondence, and that the heating boxes (17) are made of metal material.
CN202310749229.4A 2023-06-25 2023-06-25 Plastic pipe fitting welding set Withdrawn CN116714259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310749229.4A CN116714259A (en) 2023-06-25 2023-06-25 Plastic pipe fitting welding set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310749229.4A CN116714259A (en) 2023-06-25 2023-06-25 Plastic pipe fitting welding set

Publications (1)

Publication Number Publication Date
CN116714259A true CN116714259A (en) 2023-09-08

Family

ID=87873168

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310749229.4A Withdrawn CN116714259A (en) 2023-06-25 2023-06-25 Plastic pipe fitting welding set

Country Status (1)

Country Link
CN (1) CN116714259A (en)

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WW01 Invention patent application withdrawn after publication

Application publication date: 20230908

WW01 Invention patent application withdrawn after publication