CN109249600A - A kind of double-layer composite pipe processing plug and system of processing - Google Patents
A kind of double-layer composite pipe processing plug and system of processing Download PDFInfo
- Publication number
- CN109249600A CN109249600A CN201811260704.7A CN201811260704A CN109249600A CN 109249600 A CN109249600 A CN 109249600A CN 201811260704 A CN201811260704 A CN 201811260704A CN 109249600 A CN109249600 A CN 109249600A
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- Prior art keywords
- processing
- plug
- air
- double
- composite pipe
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- 239000002131 composite material Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000005086 pumping Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 229920006351 engineering plastic Polymers 0.000 description 4
- -1 Polytetrafluoroethylene Polymers 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses double-layer composite pipes to process plug, comprising: plug ontology, plug ontology are equipped with internal layer tube passage, and internal layer tube passage is penetrated through along the axis direction of plug ontology；The inner wall of internal layer tube passage is equipped with gas passage, and gas passage runs through plug ontology.System of processing, including double-layer composite pipe process plug, and plug ontology is fixedly connected with head, further includes: processing air extractor, processing air extractor include: air exhauster, air-flow integrating apparatus, pumping rifle；Air-flow integrating apparatus includes: shell, suction interface, the catheter interface being set on shell；Being evacuated rifle includes: hollow body；The tubing interface being set on hollow body；Multiple aspirating holes are connect by tracheae with catheter interface.Processing plug and mouth mold of the invention reduces the interbedded gas in double-layer composite pipe process between internal layer and outer layer with the use of double-layer composite pipe, system of processing is made, and improves the superficies situation of double-layer composite pipe, improves quality of item.
Description
Technical field
The present invention relates to the system of processing field of composite double layer pipe more particularly to a kind of double-layer composite pipe processing plug and
System of processing.
Background technique
High molecular material due to, light weight small with density, intensity is high, rigidity is big, insulating properties is excellent, coloring is good, at
The advantages that type facilitates, is widely used the high molecule plastic product that various shape color is made into all trades and professions, and
It is played an increasingly important role in our production and living.
Polytetrafluoroethylene (PTFE) has excellent material property, is widely used in every field, and polytetrafluoroethylene (PTFE) paste squeezes at present
Hose out is widely used in automobile shift system as cable lining pipe, is had using hose made of polytetrafluoroethylene (PTFE)
Effect ground improves the load efficiency of selector, for more save the cost, the birth of double-layer composite pipe can reduce cost thus
With stronger competitiveness.Double-layer composite pipe, that is, internal layer is polyfluortetraethylene pipe, and outer layer is engineering plastics, due to polytetrafluoroethyl-ne
The processing characteristics of alkene material determine that double-layer composite pipe cannot squeeze out simultaneously, can only first squeeze out polyfluortetraethylene pipe then poly- four
Engineering plastics are coated on fluoride tubes.
When processing double-layer multiple tube, since using tubular type processing is squeezed, the engineering plastics of outer layer need to pass through plug
Be attached to above polytetrafluoroethyltubing tubing after between mouth mold, but in aforementioned process double-layer composite pipe internal layer and outer layer
Between can have interbedded gas, easily cause ectonexine to slide, situations such as superficies are in poor shape, to influence quality of item.
Summary of the invention
The object of the present invention is to provide a kind of double-layer composite pipe processing plug and system of processing, double-layer composite pipe processes core
Stick and mouth mold with the use of being made double-layer composite pipe, system of processing reduce in double-layer composite pipe process internal layer and outer layer it
Between interbedded gas, reduce ectonexine sliding, improve the superficies situation of double-layer composite pipe, improve quality of item.
Technical solution provided by the invention is as follows:
A kind of double-layer composite pipe processing plug, comprising: plug ontology, it is logical for inner tube that the plug ontology is equipped with one
The internal layer tube passage crossed, the internal layer tube passage are penetrated through along the axis direction of the plug ontology；The internal layer tube passage
Inner wall is equipped with the gas passage for the supplied gas circulation that the axis far from the internal layer tube passage is recessed, the gas passage edge
The axis direction of the internal layer tube passage extend through the plug ontology.
By the way that molded inner tube is slow transitted through from internal layer tube passage, size and the internal layer tube passage of inner tube
Size is corresponding, enables inner tube just by internal layer tube passage, when to being evacuated at plug ontology, gas passes through gas
Channel is extracted, and then by the mouth mold and plug mutual cooperation at cross-head, will slowly be stretched out from internal layer tube passage
Inner tube outer wall on squeeze out one layer of outer tube, so that double-layer composite pipe be made.
Preferably, the outer wall of the internal layer tube inlet of the plug ontology is equipped with screw thread, and the plug ontology passes through the screw thread
It is fixedly connected with the head of extruder.
A kind of system of processing, including double-layer composite pipe process plug, the fixed company of the head of the plug ontology and extruder
It connects, further includes: processing air extractor, the processing air extractor include: air exhauster, air-flow integrating apparatus, pumping rifle；It is described
Air-flow integrating apparatus includes: shell；Suction interface is set on the shell, to connect with the air exhauster；Conduit connects
Mouthful, it is set on the shell；The pumping rifle includes: hollow body；Tubing interface is set on the hollow body；It is more
A aspirating hole is set on the hollow body from different directions respectively, is connect by tracheae with the catheter interface.
Air exhauster guarantees that draft is steady, then passes through pumping for providing draft, air-flow integrating apparatus for converting air-flow
Air gun extracts the gas in cross-head out, to reduce the folder in double-layer composite pipe process between internal layer and outer layer
Layer gas reduces ectonexine sliding, improves the superficies situation of double-layer composite pipe, improves quality of item.
Preferably, the hollow body of the pumping rifle is smooth hollow.
It is smooth by the way that the hollow body for being evacuated rifle to be arranged to, guarantee that inner tube will not be scratched, the smooth no wiping in surface
Wound.
Preferably, the aspirating hole is 4~8, and several aspirating holes are along the circumferential uniform of the hollow body
Arrangement.
It is evenly distributed with aspirating hole by circumferential, can be realized and be evacuated from different directions, avoid in air flow collection, process is made
At influence.
Preferably, the processing air extractor further includes ball valve, and the air-flow integrating apparatus and air exhauster pass through the ball
Valve connection.
Achieve the purpose that adjustable air-flow size by ball valve, so that suction force size is controllable.
Preferably, the processing air extractor further includes vacuum meter, and the vacuum meter is set to the air-flow integrating apparatus
On, to measure the vacuum degree of enclosure interior.
Preferably, the system of processing further include: paying out machine, pre-heating device, extruder, cooling device, is blown tension bracket
Equipment for drying, dragger and winder；The paying out machine, tension bracket, pre-heating device, processing air extractor, extruder, cooling
Device, blow-dry device, dragger and winder are arranged successively.
Preferably, the cooling device includes the vacuum sink and cooling trough being arranged successively.
Vacuum sink has an effect of vacuum sizing, and to set cooling trough more preferable compared to setting up for the stability of size.
A kind of double-layer composite pipe processing plug provided by the invention and system of processing, can bring it is following the utility model has the advantages that
Double-layer composite pipe processing plug of the invention is installed in the head of extruder, and the inner tube of double-layer composite pipe is logical
Road slow transits through finished product inner polytetrafluoroethyllayer layer pipe, and the mouth mold in the head of extruder processes plug phase with the double-layer composite pipe
Engineering plastics are squeezed out on inner polytetrafluoroethyllayer layer pipe, obtain double-layer composite pipe by mutually cooperation.System of processing setting processing is taken out
Device of air makes to form negative pressure between inner tube and outer tube by air exhauster, when reaching reduction outer layer tube material radial contraction
Fore-and-aft distance purpose.It can be by adjusting the vacuum degree size in control air-flow integrating apparatus, to cladding material radial contraction
When fore-and-aft distance be adjusted, be conducive to improve outer tube and be attached to adhesive force in inner tube, reduce outer layer and longitudinally receive
Contracting reduces the interbedded gas in double-layer composite pipe process between internal layer and outer layer, reduces ectonexine sliding, improves double-deck multiple
The superficies situation of pipe is closed, quality of item is improved.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, plug is processed to double-layer composite pipe
And above-mentioned characteristic, technical characteristic, advantage and its implementation of system of processing are further described.
Fig. 1 is the top view of the specific embodiment of double-layer composite pipe processing plug of the invention；
Fig. 2 is A in Fig. 1 to side view；
Fig. 3 is B in Fig. 1 to side view；
Fig. 4 is the perspective view of Fig. 1；
Fig. 5 is the schematic diagram of system of processing；
Fig. 6 is the structural schematic diagram processed at air extractor.
Drawing reference numeral explanation:
1- plug ontology, 1a- internal layer tube passage, 1b- screw thread, 1c- gas passage, C- internal layer tube inlet, D- inner tube go out
Mouthful, 10- paying out machine, 20- tension bracket, 30- pre-heating device, 40- processing air extractor.41- air exhauster, 42- air-flow integration dress
It sets, 42a- suction interface, 42b- catheter interface, 42c- vacuum meter, 42d- shell, 43- is evacuated rifle.43a- hollow body, 43b-
Tubing interface, 43c- aspirating hole, 44- ball valve, 45- tracheae, 46- positioning device, 50- extruder, 51- head, 60- vacuum water
Slot, 70- cooling trough, 80- blow-dry device, 90- dragger, 100- winder.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, control attached drawing is said below
Bright a specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, their not generations
Its practical structures as product of table.
[embodiment 1]
As shown in Figure 1 to 4, embodiment 1 discloses a kind of specific embodiment of double-layer composite pipe processing plug, packet
Include: plug ontology 1, plug ontology 1 are equipped with an internal layer tube passage 1a passed through for inner tube, and internal layer tube passage 1a is along core
The axis direction of stick ontology 1 penetrates through.Inner tube enters from the internal layer tube inlet C in Fig. 2, stretches out from inner tube outlet D,
The inner wall of internal layer tube passage 1a is equipped with the gas passage 1c for the supplied gas circulation that the axis far from internal layer tube passage 1a is recessed,
Gas passage 1c extends through plug ontology 1 along the axis direction of internal layer tube passage 1a, in the present embodiment, gas passage
The section of 1c is square, and the two sides of inner tube 1a are equipped with a gas passage 1c, and the gas passage 1c of two sides is about internal layer
The axisymmetrical of tube passage 1a.
More preferably, the outer wall of the internal layer tube inlet C of plug ontology 1 is equipped with screw thread 1b, and plug ontology 1 passes through screw thread 1b
It is fixedly connected with the head 51 of extruder 50.
The plug of the present embodiment is fixedly connected in the head 51 of extruder 50, positioned at the inside of mouth mold, thus plug sheet
The outer surface of body 1 and the inner surface of mouth mold squeeze out outer tube in the inner tube for slowly stretching out internal layer tube passage 1a jointly, finally
Obtain double-layer composite pipe.
[embodiment 2]
As shown in Fig. 1~Fig. 6, embodiment 2 discloses a kind of specific embodiment of system of processing, includes embodiment 1
Double-layer composite pipe process plug, plug ontology 1 is fixedly connected with the head 51 of extruder 50 by screw thread 1b, embodiment 2
Further include: processing air extractor 40, the processing air extractor 40 include: air exhauster 41, air-flow integrating apparatus 42 and pumping rifle
43。
Specifically, as shown in fig. 6, air-flow integrating apparatus 42 includes: shell 42d, suction interface 42a and catheter interface
42b, suction interface 42a are set on shell 42d, and to connect with air exhauster 41, catheter interface 42b is set to shell 42d
On.
Specifically, as shown in fig. 6, pumping rifle 43 includes: hollow body 43a, tubing interface 43b and multiple aspirating holes
43c, in the present embodiment, hollow body 43a is hollow cubic body, and aspirating hole 43c is 4, and tubing interface 43b is set to
On hollow body 43a, 4 aspirating hole 43c are set on hollow body 43a from different directions respectively, and aspirating hole 43c passes through
Tracheae 45 is connect with catheter interface 42b.
As shown in fig. 6, air exhauster 41 provides draft, and draft is provided for the shell 42d of air-flow integrating apparatus 42, due to
Aspirating hole 43c is connected to by tracheae 45 with catheter interface 42b, and therefore, the draft of air-flow integrating apparatus 42 is transmitted by tracheae 45
Into the hollow body 43a of pumping rifle 43.Therefore, the gas extracted out in pumping rifle 43 can be drawn into air-flow by tracheae 45
In integrating apparatus 42, finally it is drawn at air exhauster 41.
More preferably, processing air extractor 40 further include positioning device 46, the positioning device 46 respectively with air-flow integrating apparatus
42 connect with pumping rifle 43, and to fixed and adjustment air-flow integrating apparatus 42 and the position for being evacuated rifle 43, multi-direction position can
It adjusts.
In other specific embodiments, suction interface 42a can be multiple；The number of aspirating hole 43c is not limited to this reality
The example for applying example, is also possible to other quantity, such as 5,6 it is even more, as long as making aspirating hole 43c within 4~8
, details are not described herein again.
More preferably, the hollow body 43a of pumping rifle 43 is smooth hollow, can be avoided hollow body 43a abrasion inner tube
Outer surface, guarantee inner tube will not be scratched, the smooth no scratch in surface.Hollow body 43a uses copper, aluminium or polytetrafluoroethyl-ne
Alkene is made.
More preferably, four aspirating hole 43c being arranged circumferentially along hollow body 43a, that is, be respectively arranged at hollow
On four faces of body 43a, it is evenly distributed with aspirating hole 43c by circumferential, can be realized and be evacuated from different directions, avoid in air flow collection, it will
It is further reduced and process is impacted.
[embodiment 3]
As shown in Fig. 1~Fig. 6, on the basis of embodiment 2, the processing air extractor 40 of embodiment 3 also wraps embodiment 3
Ball valve 44 is included, air-flow integrating apparatus 42 is connected to air exhauster 41 by ball valve 44.Adjust what air exhauster 41 provided using ball valve 44
Draft size.
More preferably, processing air extractor 40 further includes vacuum meter 42c, and vacuum meter 42c is set to air-flow integrating apparatus 42
On, to measure the vacuum degree inside shell 42d.Vacuum degree size can be controlled by adjusting, to outer layer tube material radial contraction
Distance is adjusted, and improves outer tube and is attached to the adhesive force in inner tube.
[embodiment 4]
As shown in Fig. 1~Fig. 6, embodiment 4 is on the basis of embodiment 2~3, embodiment 4 further include: paying out machine 10 is opened
Power frame 20, pre-heating device 30, extruder 50, cooling device, blow-dry device 80, dragger 90 and winder 100.
Specifically, as shown in figure 5, paying out machine 10, tension bracket 20, pre-heating device 30, processing air extractor 40, extruder
50, cooling device, blow-dry device 80, dragger 90 and winder 100 are arranged successively.Inner tube is after 10 unwrapping wire of paying out machine
Inner tube is heated by pre-heating device 30, then pass sequentially through the processing pumping rifle 43 of air extractor 40, extruder 50 with
And the head 51 of extruder 50, outer tube is squeezed out on the outer wall of inner tube, obtains double-layer composite pipe, double-layer composite pipe slave
It is passed into cooling device after first 51 discharge and carries out cooling and shaping, double-layer composite pipe after cooling passes through after the drying of blow-dry device 80
Dragger 90 is wound after drawing by wrap-up, and double-layer composite pipe finished product is obtained.
Wherein, the pumping rifle 43 for processing air extractor 40 is evacuated the inside of extruder 50, i.e. pumping rifle 43 is arranged
In one end of the separate cooling device of plug ontology 1, to be extracted out gas by gas passage 1c, so that inner tube and outer
Negative pressure is formed between layer pipe, reduces the interbedded gas in double-layer composite pipe process between internal layer and outer layer, it is sliding to reduce ectonexine
It moves, improves the superficies situation of double-layer composite pipe, improve quality of item.
More preferably, cooling device includes the vacuum sink 60 and cooling trough 70 being arranged successively, cold by vacuum sink 60
But the surface of double-layer composite pipe is more smooth, and skirt is easy, and reduces the energy consumption of subsequent dragger 90, passes sequentially through vacuum water
Slot 60 and cooling trough 70, cooling effect is relative to only with cooling trough 70, and cooling effect is more preferably.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (9)
1. a kind of double-layer composite pipe processes plug characterized by comprising
Plug ontology, the plug ontology be equipped with an internal layer tube passage passed through for inner tube, the internal layer tube passage along
The axis direction of the plug ontology penetrates through；
The inner wall of the internal layer tube passage is equipped with the gas for the supplied gas circulation that the axis far from the internal layer tube passage is recessed
Channel, the gas passage extend through the plug ontology along the axis direction of the internal layer tube passage.
2. double-layer composite pipe according to claim 1 processes plug, it is characterised in that:
The outer wall of the internal layer tube inlet of the plug ontology is equipped with screw thread, and the plug ontology passes through the machine of the screw thread and extruder
Head is fixedly connected.
3. a kind of system of processing, plug is processed including double-layer composite pipe described in claims 1, the plug ontology and is squeezed
The head of machine is fixedly connected out, which is characterized in that further include:
Air extractor is processed, the processing air extractor includes: air exhauster, air-flow integrating apparatus, pumping rifle；
The air-flow integrating apparatus includes: shell；Suction interface is set on the shell, to connect with the air exhauster；
Catheter interface is set on the shell；
The pumping rifle includes: hollow body；Tubing interface is set on the hollow body；Multiple aspirating holes, respectively never
It is equidirectional to be set on the hollow body, it is connect by tracheae with the catheter interface.
4. system of processing according to claim 3, it is characterised in that:
The hollow body of the pumping rifle is smooth hollow.
5. system of processing according to claim 3, it is characterised in that:
The aspirating hole is 4~8, and several aspirating hole being arranged circumferentially along the hollow body.
6. system of processing according to claim 3, it is characterised in that:
The processing air extractor further includes ball valve, and the air-flow integrating apparatus is connected to air exhauster by the ball valve.
7. system of processing according to claim 3, it is characterised in that:
The processing air extractor further includes vacuum meter, and the vacuum meter is set on the air-flow integrating apparatus, to measure
The vacuum degree of enclosure interior.
8. system of processing according to claim 3, which is characterized in that further include:
Paying out machine, tension bracket, pre-heating device, extruder, cooling device, blow-dry device, dragger and winder；
The paying out machine, tension bracket, pre-heating device, processing air extractor, extruder, cooling device, blow-dry device, dragger with
And winder is arranged successively.
9. system of processing according to claim 8, it is characterised in that:
The cooling device includes the vacuum sink and cooling trough being arranged successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811260704.7A CN109249600B (en) | 2018-10-26 | 2018-10-26 | Double-layer composite pipe machining core rod and machining system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811260704.7A CN109249600B (en) | 2018-10-26 | 2018-10-26 | Double-layer composite pipe machining core rod and machining system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109249600A true CN109249600A (en) | 2019-01-22 |
| CN109249600B CN109249600B (en) | 2024-07-12 |
Family
ID=65046819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811260704.7A Active CN109249600B (en) | 2018-10-26 | 2018-10-26 | Double-layer composite pipe machining core rod and machining system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109249600B (en) |
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| JPH09262893A (en) * | 1996-03-28 | 1997-10-07 | Sekisui Chem Co Ltd | Production of composite pipe |
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| JP2007077873A (en) * | 2005-09-14 | 2007-03-29 | Sankei Giken Kogyo Co Ltd | Method and device for manufacturing inner and outer double tube |
| CN202412660U (en) * | 2011-12-15 | 2012-09-05 | 新疆天业（集团）有限公司 | Double-layer composite pipe headpiece |
| CN203818537U (en) * | 2014-05-09 | 2014-09-10 | 贵州天地塑业科技有限公司 | Improved structure of plastic pipeextruder head |
| CN105584067A (en) * | 2016-01-18 | 2016-05-18 | 上海长园电子材料有限公司 | Plastic sleeve machining air extracting device and double-layered tube coating production system |
| CN205661017U (en) * | 2016-06-03 | 2016-10-26 | 天津森普管材有限公司 | Orientated plastics pipe equipment |
| CN106738774A (en) * | 2016-12-31 | 2017-05-31 | 剑河县连光复合塑料水管有限公司 | Double-layer composite pipe extruded mould |
| CN207432732U (en) * | 2017-11-17 | 2018-06-01 | 深圳市恒大伟业塑胶有限公司 | A kind of multi-layer co-extruded composite precision die |
| CN209111472U (en) * | 2018-10-26 | 2019-07-16 | 上海长园电子材料有限公司 | A kind of double-layer composite pipe processing plug and system of processing |
-
2018
- 2018-10-26 CN CN201811260704.7A patent/CN109249600B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09262893A (en) * | 1996-03-28 | 1997-10-07 | Sekisui Chem Co Ltd | Production of composite pipe |
| CN2336949Y (en) * | 1998-04-18 | 1999-09-08 | 王守信 | Plastic three-layer co-extruding machines heads for tubes |
| CN2668379Y (en) * | 2003-08-26 | 2005-01-05 | 甘国工 | Apparatus for completing integal dual-wall socketing groove for plastic corrugated pipe shaping machine |
| JP2007077873A (en) * | 2005-09-14 | 2007-03-29 | Sankei Giken Kogyo Co Ltd | Method and device for manufacturing inner and outer double tube |
| CN202412660U (en) * | 2011-12-15 | 2012-09-05 | 新疆天业（集团）有限公司 | Double-layer composite pipe headpiece |
| CN203818537U (en) * | 2014-05-09 | 2014-09-10 | 贵州天地塑业科技有限公司 | Improved structure of plastic pipeextruder head |
| CN105584067A (en) * | 2016-01-18 | 2016-05-18 | 上海长园电子材料有限公司 | Plastic sleeve machining air extracting device and double-layered tube coating production system |
| CN205661017U (en) * | 2016-06-03 | 2016-10-26 | 天津森普管材有限公司 | Orientated plastics pipe equipment |
| CN106738774A (en) * | 2016-12-31 | 2017-05-31 | 剑河县连光复合塑料水管有限公司 | Double-layer composite pipe extruded mould |
| CN207432732U (en) * | 2017-11-17 | 2018-06-01 | 深圳市恒大伟业塑胶有限公司 | A kind of multi-layer co-extruded composite precision die |
| CN209111472U (en) * | 2018-10-26 | 2019-07-16 | 上海长园电子材料有限公司 | A kind of double-layer composite pipe processing plug and system of processing |
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| Publication number | Publication date |
|---|---|
| CN109249600B (en) | 2024-07-12 |
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