CN115431543A - Plastic pipe hot-melting method capable of achieving accurate positioning - Google Patents
Plastic pipe hot-melting method capable of achieving accurate positioning Download PDFInfo
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- CN115431543A CN115431543A CN202211040260.2A CN202211040260A CN115431543A CN 115431543 A CN115431543 A CN 115431543A CN 202211040260 A CN202211040260 A CN 202211040260A CN 115431543 A CN115431543 A CN 115431543A
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- welding
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- plastic pipes
- pipes
- heat
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- 239000004033 plastic Substances 0.000 title claims abstract description 152
- 229920003023 plastic Polymers 0.000 title claims abstract description 152
- 238000002844 melting Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000003466 welding Methods 0.000 claims abstract description 107
- 239000012943 hotmelt Substances 0.000 claims abstract description 21
- 239000000428 dust Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims description 45
- 238000010438 heat treatment Methods 0.000 claims description 28
- 239000012535 impurity Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 239000008213 purified water Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 239000003550 marker Substances 0.000 claims description 2
- 238000004023 plastic welding Methods 0.000 claims 2
- 230000004927 fusion Effects 0.000 abstract description 15
- 239000011435 rock Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- B29C65/78—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
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/023—Cleaning the external surface
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses a plastic pipe hot-melting method with accurate positioning, which comprises the following steps: and (3) processing the welding position, namely confirming the welding positions of the two plastic pipes to have corresponding sizes before thermal welding, cleaning the welding position of the plastic pipes, removing dust and foreign matters adsorbed on the outer surfaces of the plastic pipes, and respectively putting the two processed plastic pipes into a positioning clamp. This plastic tubing hot melt welding method of accurate location, confirm the butt fusion size through before plastic conduit hot melt welding, and mark the position that confirms, thereby make the precision when the plastic conduit is welded through this method hot melt improve, fix two plastic tubing through when the hot melt, and set up the slipmat in the positioning fixture, thereby guarantee that plastic tubing can not take place to rock and rotatory phenomenon when the butt fusion, thereby avoid the phenomenon of deviation appearing when the hot melt welding, further improve the precision when this method carries out hot melt welding.
Description
Technical Field
The invention relates to the technical field of plastic pipe connection, in particular to a plastic pipe hot-melting method with accurate positioning.
Background
The hot melt connection of the plastic pipe connection method is most reliable, the operation is convenient, the air tightness is good, the interface intensity is high, and a hot melt butt welding machine is special welding equipment for welding thermoplastic pipe fittings by applying a hot melt butt welding technology; the welding frame of the hot melting butt welding machine is separated from the operating system; the whole machine (full-automatic type, hydraulic semi-automatic type) is composed of a PLC system mainframe box, a welding frame, a clamp, an electric heating plate, an electric milling cutter and the like; the manual type does not have a hydraulic system. The welding frame is made of high-strength aluminum alloy materials, so that the structure is firm, light and durable; the welding frame adopts a clamping sleeve mica sheet compression structure, the pipe is accurately positioned, and the misalignment amount is easily adjusted.
The existing plastic pipe hot-melting method fails to perform good positioning and related auxiliary measures on the plastic pipe through positioning equipment when the plastic pipe is connected, so that the precision of hot-melting connection is poor, the stability of the plastic pipe after connection is poor, hot-melting connection needs to be performed again, the waste of the pipe is caused, and the working efficiency of the plastic pipe hot-melting connection is influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the plastic pipe hot-melting welding method with accurate positioning, which has the advantages of high precision in positioning, more stable hot-melting welding position, improvement on the working efficiency of the plastic pipe hot-melting welding and the like, and solves the problems that the stability is poor after the plastic pipe hot-melting welding is connected, the hot-melting welding needs to be carried out again, the waste of the pipe is caused, and the working efficiency of the plastic pipe hot-melting connection is influenced due to poor precision of the hot-melting connection.
(II) technical scheme
In order to realize the purposes that the positioning has high precision, the thermal welding position is more stable, and the working efficiency of the thermal welding of the plastic pipe is improved, the invention provides the following technical scheme:
a method of precision positioned plastic pipe heat fusion, comprising the steps of:
s1, processing of welding position
Before hot-melt welding, the welding positions of the two plastic pipes are confirmed to have corresponding sizes, then the welding positions of the plastic pipes are cleaned, and dust and foreign matters adsorbed on the outer surfaces of the plastic pipes are removed;
s2, positioning of workpieces
Respectively placing the two processed plastic pipes into a positioning fixture, fixing two ends of the two processed plastic pipes through the positioning fixture, and checking the two fixed plastic pipes;
s3, hot melting of pipelines
Pushing the plastic pipe into the hot melting tool in a non-rotating manner through the positioning clamp, and stopping when the plastic pipe reaches the marked position;
s4, welding of pipelines
After heating is finished, quickly taking down the hot melting tool, quickly and uniformly inserting the hot melting tool into the required depth in a straight line without rotation by pushing the positioning clamp, so that the joint is opened into a uniform flange, correcting the welding position in time during connection, keeping the connection state after correction is finished, and taking down the pipeline after the welding position is completely cooled;
s5, processing of welding part
The welding effect is checked after the plastic pipe which is cooled is taken down, the welding position is polished through polishing equipment, the overflow part of the hot melting position is cleaned, and the connecting position is polished to be round.
Preferably, in the step S1, the determined dimension is a depth required for thermal welding, and the dimension position is marked by a marking tool such as a marker pen.
Preferably, in the step S1, when the dust and the impurities of the plastic pipe are cleaned, purified water is firstly used for cleaning, and after the cleaning, the welding position is dried by a dryer, wherein the drying temperature of the dryer is controlled to be 40-50 ℃.
Preferably, in the step S2, the bottom of the selected positioning fixture is provided with a rail, the clamped pipeline can be moved left and right, and an anti-slip mat with a certain thickness is arranged in the positioning fixture.
Preferably, in the step S2, the fixed plastic pipe is pushed to move during the inspection until the two pipes are contacted with each other at the hot melting position, and whether an error exists at the contact position of the two plastic pipes is observed.
Preferably, in step S2, if there is an error, the plastic pipe needs to be fixed again, and if there is no error, the next operation is performed.
Preferably, in step S3, the hot melting tool is a hot melter, and before the heating operation, a heating die head with a proper size is selected according to the size of the plastic tube.
Preferably, in the step S3, the heating time of the plastic pipe in the hot melter is determined according to the size of the pipe, and when the diameter of the plastic pipe is 20-120mm, the heating time is controlled to be 5-55S.
Preferably, in the step S4, the plastic pipe in the thermal welding process may be corrected in the heating process, the plastic pipe cannot be rotated during the correction, the positioning fixture needs to be pushed gently during the connection, the force is too large strictly, and the completion of the cooling of the plastic pipe means that the surface temperature of the plastic pipe is reduced to 20 to 30 ℃.
Preferably, in the step S5, when the plastic pipe after hot melting is inspected, whether the position of the hot melting position is a mark position or not is inspected, and the firmness of the hot melting position is inspected, if there is a gap or a shake in the welding position during the inspection, the welding position needs to be cut, and the operations of S1 to S5 are repeated, and if the requirements are met, the hot melting of the plastic pipe is completed.
(III) advantageous effects
Compared with the prior art, the invention provides the plastic pipe hot-melting method with accurate positioning, which has the following beneficial effects:
1. this plastic tubing hot melt welding method of accurate location, confirm the butt fusion size through before plastic conduit hot melt welding, and mark the position of confirming, thereby make the precision when the hot melt welding plastic conduit through this method improve, through fixing two plastic tubing when the hot melt, and set up the slipmat in the positioning fixture, thereby guarantee that plastic tubing can not take place to rock and rotatory phenomenon when the butt fusion, thereby avoid the phenomenon of deviation appearing when the hot melt welding, further improve the precision when this method carries out hot melt welding, at last through promoting positioning fixture with even and lighter dynamics, thereby avoid because of exerting oneself the phenomenon that too greatly causes plastic conduit bending or dislocation, further improvement is to the precision of plastic tubing, avoid the phenomenon of doing over again, the work efficiency of plastic tubing hot melt welding has been improved.
2. This plastic tubing heat fusion method of accurate location, through clear up the impurity and the dust on plastic tubing surface before the heat fusion, thereby prevent that plastic tubing from influencing the phenomenon of connection compactness because of impurity and gray layer when the heat fusion, control heat time through the diameter according to tubular product when heating plastic tubing, avoid appearing influencing the joint strength of heat fusion department because of the plastic tubing thickness attenuation appears in the heat time overlength, through handling heat fusion department, thereby make the junction more pleasing to the eye.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example one
A method of precision positioned plastic pipe heat fusion, comprising the steps of:
s1, processing welding position
Before thermal welding, the welding positions of two plastic pipes are confirmed to have corresponding sizes, then the welding positions of the plastic pipes are cleaned, dust and foreign matters adsorbed on the outer surfaces of the plastic pipes are removed, the determined sizes are depths required during the thermal welding, the size positions are marked by marking tools such as marking pens and the like, when the dust and the foreign matters of the plastic pipes are cleaned, purified water is firstly used for cleaning, after the cleaning is finished, the welding positions are dried by a dryer, and the drying temperature of the dryer is controlled at 40 ℃;
s2, positioning of workpieces
Respectively placing the two processed plastic pipes into a positioning fixture, fixing two ends of the two processed plastic pipes through the positioning fixture, checking the two fixed plastic pipes, arranging a track at the bottom of the selected positioning fixture, moving the clamped pipes left and right, arranging an anti-slip pad with a certain thickness in the positioning fixture, pushing the fixed plastic pipes to move during checking until the two pipes are contacted with each other at a hot-melt position, observing whether an error exists at the contact position of the two plastic pipes, if so, re-fixing the plastic pipes, and if not, performing the next operation;
s3, hot melting of pipelines
Pushing the plastic pipe into a hot melting tool in a non-rotating manner through a positioning clamp, stopping when the plastic pipe reaches a mark, selecting a hot melting device as the hot melting tool, selecting a heating die head with a proper size according to the size of the plastic pipe before heating operation, determining the heating time of the plastic pipe in the hot melting device according to the size of the plastic pipe, and controlling the heating time to be 5s when the diameter of the plastic pipe is 20 mm;
s4, welding of pipelines
After heating is finished, quickly taking down a hot melting tool, quickly and uniformly inserting the hot melting tool into a required depth in a straight line without rotation by pushing a positioning clamp, so that a joint is opened into a uniform flange, correcting a welding position in time during connection, keeping a connection state after correction is finished, taking down a pipeline until the welding position is completely cooled, correcting a plastic pipe in hot welding in a heating process, wherein the plastic pipe cannot rotate during correction, slightly pushing the positioning clamp during connection, and strictly prohibiting excessive force, wherein the plastic pipe is cooled to be the surface temperature of the plastic pipe reduced to 20 ℃;
s5, processing of welding part
The welding effect is checked after the plastic pipe which is cooled is taken down, the welding position is polished through polishing equipment, the overflow part of the hot melting position is cleaned, the connecting position is polished to be smooth, when the plastic pipe which is subjected to hot melting is checked, whether the position of the hot melting position is a mark position or not is checked, the firmness degree of the hot melting position is checked, if a gap exists in the welding position or the welding position shakes during checking, the welding position needs to be cut, S1-S5 operation is repeated, and if the requirements are met, hot welding of the plastic pipe is completed.
Example two
A method of precision positioned plastic pipe heat fusion, comprising the steps of:
s1, processing welding position
Before thermal welding, the welding positions of two plastic pipes are confirmed to have corresponding sizes, then the welding positions of the plastic pipes are cleaned, dust and foreign matters adsorbed on the outer surfaces of the plastic pipes are removed, the determined sizes are depths required during the thermal welding, the size positions are marked by marking tools such as marking pens and the like, when the dust and the foreign matters of the plastic pipes are cleaned, purified water is firstly used for cleaning, after the cleaning is finished, the welding positions are dried by a dryer, and the drying temperature of the dryer is controlled at 50 ℃;
s2, positioning of workpieces
Respectively placing the two processed plastic pipes into a positioning fixture, fixing two ends of the two processed plastic pipes through the positioning fixture, checking the two fixed plastic pipes, arranging a track at the bottom of the selected positioning fixture, moving the clamped pipes left and right, arranging an anti-slip pad with a certain thickness in the positioning fixture, pushing the fixed plastic pipes to move during checking until the two pipes are contacted with each other at a hot-melt position, observing whether an error exists at the contact position of the two plastic pipes, if so, re-fixing the plastic pipes, and if not, performing the next operation;
s3, hot melting of pipelines
Pushing the plastic pipe into a hot melting tool in a non-rotating manner through a positioning clamp, stopping when the plastic pipe reaches a mark, selecting a hot melting device as the hot melting tool, selecting a heating die head with a proper size according to the size of the plastic pipe before heating operation, determining the heating time of the plastic pipe in the hot melting device according to the size of the plastic pipe, and controlling the heating time to be 55s when the diameter of the plastic pipe is 120 mm;
s4, welding of pipelines
After heating is finished, quickly taking down a hot melting tool, quickly and uniformly inserting the hot melting tool into a required depth in a straight line without rotation by pushing a positioning clamp, so that a joint is opened into a uniform flange, correcting a welding position in time during connection, keeping a connection state after correction is finished, taking down a pipeline until the welding position is completely cooled, correcting a plastic pipe in hot welding in a heating process, wherein the plastic pipe cannot rotate during correction, slightly pushing the positioning clamp during connection, and strictly prohibiting excessive force, wherein the plastic pipe is cooled to be the surface temperature of the plastic pipe reduced to 30 ℃;
s5, processing of welding part
The welding effect is checked after the plastic pipe which is cooled is taken down, the welding position is polished through polishing equipment, the overflow part of the hot melting position is cleaned, the connecting position is polished to be smooth, when the plastic pipe which is subjected to hot melting is checked, whether the position of the hot melting position is a mark position or not is checked, the firmness degree of the hot melting position is checked, if a gap exists in the welding position or the welding position shakes during checking, the welding position needs to be cut, S1-S5 operation is repeated, and if the requirements are met, hot welding of the plastic pipe is completed.
According to the plastic pipe hot-melting method with the accurate positioning function, the welding size is determined before the plastic pipes are subjected to hot melting, and the determined positions are marked, so that the accuracy in the process of hot-melting the plastic pipes is improved, two plastic pipes are fixed in the process of hot melting, and the anti-slip pads are arranged in the positioning clamp, so that the plastic pipes are prevented from shaking and rotating in the process of welding, the phenomenon of deviation in the process of hot melting is avoided, the accuracy in the process of hot melting is further improved, and finally the positioning clamp is pushed with uniform and light force, so that the phenomenon that the plastic pipes are bent or staggered due to excessive force is avoided, the accuracy in the process of hot melting the plastic pipes is further improved, the phenomenon of reworking is avoided, and the working efficiency of hot melting of the plastic pipes is improved; through impurity and dust to the plastics tubular product surface clear up before the heat fusion to prevent that plastics tubular product from influencing the phenomenon of connecting the compactness because of impurity and gray layer when the heat fusion, control heating time through the diameter according to tubular product when heating plastics tubular product, avoid appearing influencing the joint strength of heat fusion department because of the plastic tubular product thickness attenuation appears in the heating time overlength, through handling heat fusion department, thereby make the junction more pleasing to the eye.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A method for the hot welding of precisely positioned plastic pipes is characterized by comprising the following steps:
s1, processing of welding position
Before hot-melt welding, the welding positions of the two plastic pipes are confirmed to have corresponding sizes, then the welding positions of the plastic pipes are cleaned, and dust and foreign matters adsorbed on the outer surfaces of the plastic pipes are removed;
s2, positioning of workpieces
Respectively placing the two processed plastic pipes into a positioning fixture, fixing two ends of the two processed plastic pipes through the positioning fixture, and checking the two fixed plastic pipes;
s3, hot melting of pipelines
Pushing the plastic pipe into the hot melting tool in a non-rotating manner through the positioning clamp, and stopping when the plastic pipe reaches the marked position;
s4, welding of pipelines
After heating is finished, quickly taking down the hot melting tool, quickly and uniformly inserting the hot melting tool into the required depth in a straight line without rotation by pushing the positioning clamp, so that the joint is opened into a uniform flange, correcting the welding position in time during connection, keeping the connection state after correction is finished, and taking down the pipeline after the welding position is completely cooled;
s5, processing of welding part
The welding effect is checked after the plastic pipe which is cooled is taken down, the welding position is polished through polishing equipment, the overflow part of the hot melting position is cleaned, and the connecting position is polished to be smooth.
2. A method for heat-welding plastic pipes with precise positioning according to claim 1, wherein the dimension determined in step S1 is a depth required for heat-welding, and the dimension position is marked by a marking tool such as a marker pen.
3. The method for hot-melt welding of plastic pipes with precise positioning according to claim 1, wherein in the step S1, when cleaning up dust and impurities of the plastic pipes, the plastic pipes are cleaned with purified water, and after cleaning up, the welded parts are dried by a dryer, wherein the drying temperature of the dryer is controlled to be 40-50 ℃.
4. A method for heat welding plastic pipes with precise positioning according to claim 1, wherein in step S2, the bottom of the selected positioning fixture is provided with a rail for moving the clamped pipes left and right, and a non-slip mat with a certain thickness is arranged in the positioning fixture.
5. A method for heat welding plastic pipes with precise positioning according to claim 1, wherein in the step S2, the fixed plastic pipes are pushed to move until the heat-melted parts of the two pipes contact, and the contact parts of the two pipes are observed to see whether there is an error.
6. A method for heat-welding plastic pipes with precise positioning according to claim 5, wherein in step S2, if there is an error, the plastic pipes need to be fixed again, and if there is no error, the next operation is performed.
7. A method for heat-welding plastic pipes with precise positioning according to claim 1, wherein in step S3, the heat-melting tool is a heat-melting device, and a heating die head with a proper size is selected according to the size of the plastic pipe before the heating operation.
8. A method for heat-welding plastic pipes with precise positioning according to claim 1, wherein in step S3, the heating time of the plastic pipe in the heat-welder is determined according to the size of the pipe, and the heating time is controlled to be 5-55S when the diameter of the plastic pipe is 20-120 mm.
9. The method for heat welding of plastic pipes with precise positioning according to claim 1, wherein in step S4, the plastic pipe during heat welding can be corrected during heating, the plastic pipe cannot be rotated during correction, the positioning fixture needs to be pushed gently during connection, the force is too large strictly, and the surface temperature of the plastic pipe is reduced to 20-30 ℃ after cooling of the plastic pipe.
10. A method for heat welding plastic pipes with precise positioning according to claim 1, wherein in step S5, when the plastic pipes after heat welding are inspected, whether the position of the heat welding position is a marked position or not is inspected, and the firmness of the heat welding position is inspected, if there is a gap or shaking in the welding position during inspection, the welding position needs to be cut, and the operations of S1-S5 are repeated, and if the requirements are met, the heat welding of the plastic pipes is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211040260.2A CN115431543A (en) | 2022-08-29 | 2022-08-29 | Plastic pipe hot-melting method capable of achieving accurate positioning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211040260.2A CN115431543A (en) | 2022-08-29 | 2022-08-29 | Plastic pipe hot-melting method capable of achieving accurate positioning |
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| CN115431543A true CN115431543A (en) | 2022-12-06 |
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| CN202211040260.2A Pending CN115431543A (en) | 2022-08-29 | 2022-08-29 | Plastic pipe hot-melting method capable of achieving accurate positioning |
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2022
- 2022-08-29 CN CN202211040260.2A patent/CN115431543A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 海骄压力管道专家: "PE管焊接现场"老师傅"带你悉数盘点热熔焊接规范操作相关事项", Retrieved from the Internet <URL:https://ml.mbd.baidu.com/r/1i8jaS9vAQ0?f=cp&u=3a4fec297104df2b> * |
| 狼|好德如好色: "热熔连接", Retrieved from the Internet <URL:https://www.360doc.cn/article/15920219_359208786.html> * |
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