CN105904749A - Production technology for producing prefabricated plastic thermal insulation pipeline through one-step method - Google Patents
Production technology for producing prefabricated plastic thermal insulation pipeline through one-step method Download PDFInfo
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- CN105904749A CN105904749A CN201610367148.8A CN201610367148A CN105904749A CN 105904749 A CN105904749 A CN 105904749A CN 201610367148 A CN201610367148 A CN 201610367148A CN 105904749 A CN105904749 A CN 105904749A
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- Prior art keywords
- inner tube
- heat
- insulation layer
- work inner
- shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
Abstract
The invention discloses a production technology for producing a prefabricated plastic thermal insulation pipeline through a one-step method. The production technology comprises the steps of 1) extrusion molding of a working inner pipe: continuously molding the working inner pipe of the plastic thermal insulation pipeline through utilizing an extrusion device; 2) shaping and cooling of the working inner pipe: shaping and cooling the working inner tube through utilizing a shaping and cooling device; 3) continuous wrapping of thermal insulation layer on the working inner tube: continuously wrapping the working inner tube with the thermal insulation layer through utilizing a continuous foaming molding device; and 4) continuous gluing of an outer protective layer on the thermal insulation layer: continuously gluing an outer protective layer on the thermal insulation layer through utilizing an outer coating device. According to the production technology for producing the prefabricated plastic thermal insulation pipeline through the one-step method, the defect that an existing thermal insulation pipeline can only be produced section by section is overcome, and the continuous production of the plastic thermal insulation pipeline can be achieved.
Description
Technical field
The present invention relates to a kind of pipeline production technology, the concrete life for a kind of One-step production prefabricated plastic utilidor
Production. art.
Background technology
Traditional heat distribution pipeline, typically worked by steel inner tube, anticorrosive coat, heat-insulation layer and protective layer constitute, this thermal pipe
The production method in road is: at single suit protection outer tube outside the steel pipe straight tube of preservative treatment, and in steel pipe straight tube and protection
Mounting bracket between outer tube, to maintain the coaxial state between steel pipe straight tube and protection outer tube, then irrigates heat-insulation layer.Therefore,
Due to the construction features of existing heat distribution pipeline, straight-run of pipe can only be produced every time, producing installation when, use scene piecemeal
Electric welding connects.The Chinese patent of some prefabricated thermal pipe product, such as Publication No. CN 102278544A is open in recent years
A kind of prefabricated direct burial composite insulating pipes of plastic working pipes, plastic conduit is only replaced steel pipe, is produced the most piecemeal, constructs by it
Install.Although existing heat distribution pipeline production method disclosure satisfy that the production requirement of heat distribution pipeline to a certain extent, but, heat
Hydraulic piping cannot realize producing continuously, needs Piecemeal erection construction and installation when, does not only result in production efficiency low, and
Cause construction and installation efficiency relatively low, and the numerous junction points between each section of heat distribution pipeline cause the potential safety hazard of system.
Summary of the invention
In view of this, it is an object of the invention to provide the production work of a kind of One-step production prefabricated plastic utilidor
Skill, it is possible to realize the continuous production of plastic, thermal-insulation pipeline.
For reaching above-mentioned purpose, the present invention provides following technical scheme:
The production technology of a kind of One-step production prefabricated plastic utilidor, comprises the steps:
1) extrusion molding work inner tube: utilize the work inner tube of extrusion device continuously shaped plastic, thermal-insulation pipeline；
2) sizing cooling work inner tube: utilize cooling apparatus for shaping sizing cooling work inner tube；
3) in work inner tube, heat-insulation layer is wrapped up continuously: utilize continuous foamed shaped device to wrap up insulation continuously in work inner tube
Layer；
4) fit continuously on heat-insulation layer outer jacket: utilize casing to fit continuously on heat-insulation layer outer jacket.
Further, in described step 1), described extrusion device includes plastic extruder and is arranged on described plastic extruder
The upper mould for shaping work inner tube.
Further, described step 2) in, described cooling apparatus for shaping includes negative pressure shaping case and the cooling being set to one
Device, is provided with the shaper for work inner tube of shaping in described negative pressure shaping case.
Further, in described step 3), described continuous foamed shaped device includes foaming machine and in work inner tube
Wrap up the heat-insulation layer shaped device of heat-insulation layer continuously；Described heat-insulation layer shaped device includes that frame, described frame are provided with two
Conveyer mechanism, described conveyer mechanism includes at least two belt wheel and the conveyer belt being sleeved on described belt wheel, two of which
The work belt wheel that centered by adjacent described belt wheel, line is parallel with the direction of feed of work inner tube, two described conveyer mechanisms
In, the conveyer belt laid respectively between two described work belt wheels of correspondence is parallel to each other；On described conveyer belt, insulation is installed
Formable layer die unit, one end end face of the described the most described conveyer belt of heat-insulation layer forming mold unit is provided with half slot；Point
It is not arranged on two described conveyer belts and heat-insulation layer forming mold unit between two corresponding described work belt wheels
Cooperate and formed the circular tube shaped heat-insulation layer shaping channel passed for the inner tube that works, described insulation by described half slot split
The physical dimension of formable layer passage is more than the physical dimension of work inner tube；The expanded material delivery outlet of described foaming machine is positioned at described
In heat-insulation layer shaping channel.
Further, the work inner tube after the sizing cooling of described cooling apparatus for shaping enters in described heat-insulation layer shaping channel
And feeding forward continuously, the linear velocity of two described conveyer belts of regulation and the feed speed phase of the work inner tube of plastic, thermal-insulation pipeline
Deng, and make moving direction and the work inner tube of described heat-insulation layer forming mold unit between two described work belt wheels
Direction of feed is identical, utilizes foaming machine to be poured between work inner tube and heat-insulation layer shaping channel by expanded material continuously, makes
Expanded material is shaped under the effect of heat-insulation layer shaping channel and is wrapped in work inner tube formation heat-insulation layer.
Further, in described step 4), it is provided with in described casing for outer jacket of fitting continuously on heat-insulation layer
Fit body continuously, described continuous fit body includes mould of fitting, is provided with in pipeline passes in described laminating mould
Heart through hole, is provided with outer layer extrusion molding structure in described laminating mould；Described outer layer extrusion molding structure includes being arranged on described
Charging aperture on laminating mould and the material buffer chamber that described charging aperture communicates and the extrusion molding coaxial with described central through hole
Passage, described extrusion molding passage communicates with described material buffer chamber；Described laminating mould is provided with the sealing with tube fit
Structure, and described laminating mould is provided with the negative pressure between the discharging opening of described sealing structure and described extrusion molding passage
Interface, described negative port communicates with described central through hole.
Further, the pipeline after continuous foamed shaped device parcel heat-insulation layer enters in described central through hole, outside regulation
The extrusion molding speed of layer extrusion molding structure is equal with the feed speed of pipeline, and connects evacuation on described negative port
Device evacuation, the vacuum of evacuation is 0.01-0.1MPa.
Further, also include being arranged on described step 2) and step 3) between compound working procedure, utilize set composite at warp
Process composite bed in work inner tube after the sizing cooling of described cooling apparatus for shaping and/or process heat tracing cable in work inner tube
Hole and leakage alarm line.
Further, step 5) is also included: traction rolling: utilize traction apparatus traction after casing laminating outer jacket
Plastic, thermal-insulation pipeline continuous feed, and utilize wrap-up rolling to produce the plastic, thermal-insulation pipeline obtained.
Further, described work inner tube uses PB, PPS or PE-X to make；Described heat-insulation layer uses EPU material to make；Institute
Stating outer jacket uses PE to make.
The beneficial effects of the present invention is:
The production technology of the One-step production prefabricated plastic utilidor of the present invention, utilizes the extrusion device can continuous extrusion
Work inner tube, utilizes cooling apparatus for shaping work inner tube can carry out cooling process of shaping, utilizes continuous foamed shaped device
Can in work inner tube continuously parcel produce heat-insulation layer, utilize casing can fit continuously on heat-insulation layer outer jacket,
So, just it is capable of the continuous production of plastic, thermal-insulation pipeline, i.e. uses the One-step production prefabricated plastic insulating tube of the present invention
The production technology in road, overcomes the defect that existing utilidor can only produce piecemeal, it is possible to realize the continuous of plastic, thermal-insulation pipeline
Produce.
By arrange in the frame of heat-insulation layer shaped device two in the belt mechanism being oppositely arranged, during use, make
The linear velocity of conveyer belt is equal with the feed speed of work inner tube, so, utilizes foaming machine to export expanded material to heat-insulation layer
Between shaping channel and work inner tube and fill heat-insulation layer shaping channel, can wrap up and being made up of expanded material in work inner tube
Heat-insulation layer, it is possible to meet heat-insulation layer quantity-produced requirement.
By arranging continuous fit body in casing, it is possible to direct extrusion molding outer jacket, outer jacket is fitted in
On heat-insulation layer, and and seal one confined space of formation between structure, by sealing structure and the discharging of extrusion molding passage
Negative port is set to this confined space evacuation, it is possible to effectively strengthen the laminating between outer jacket and heat-insulation layer strong between Kou
Degree；Owing to the effect of negative pressure can strengthen laminating intensity, though the periphery wall out-of-flatness of heat-insulation layer, it is also possible to by heat distribution pipeline
Outer jacket is fitted on heat-insulation layer, is i.e. particularly well-suited to the smooth surface of the intentional or unintentional certain moulding of insulation layer surface, outward
Sheath remains able to appropriate fitting on heat-insulation layer, thus realizes producing the most continuously of heat distribution pipeline, improves production efficiency.
The production technology utilizing the One-step production prefabricated plastic utilidor of the present invention produces the plastic, thermal-insulation pipe obtained
Road has the advantage that
1) heat-insulation layer has certain pliability, produce the plastic, thermal-insulation pipeline that obtains can at free bend under certain radius,
Thus, pipeline can produce continuously, through coiling transport, and realizes continuous laying, in the duct length of fixed length, need not arrange
The pipe fitting connected for pipeline；It is known that system is the most complicated, reliability is the lowest, and this pipeline greatly reduces production, system knot
Structure and the complexity of construction and installation, therefore, its reliability is greatly enhanced, and needs manually-operated operating point to be located only within pipeline
Section start and terminal, manually greatly reducing of needs, labor strength is substantially reduced, therefore its lay cost significantly drop
Low；
2) because the feature of its continuous laying, its duration is extremely short, and the backfill of its digging laying even can complete in one day, for
The pipeline rehabilitation replacement work of ripe block has bigger social benefit；
3) the conduct work inner tube of the plastic material of tolerance higher temperatures, its corrosion resistance is higher compared with metallic conduit, its life expectancy
At least 30 years, it is greatly improved than the service life (about about 10 years) of existing working metal inner tube, and the production cost fall of pipeline
Low more than 70%, due to its frequency of maintenance and the reduction overhauling frequency, the most also bring good social benefit.
4) Dou Shi water-deficient area, three northern areas of China major part region, as a example by Gansu, the annual rate of water make-up of its heating water surpasses
Cross 2,000,000 cubes, enough irrigate 600,000 mu of soils, 400,000 tons of standard coals of its heat loss, and the flue gas pair that burning coal is discharged
The pollution of environment.This product is stopping pipeline stage casing dehydration loss of heat, the saving to non-renewable resources, will produce huge society
Benefit；
5) surface irregularity of the plastic, thermal-insulation pipeline obtained is produced, during installation, it is possible to be effectively increased surface and rub
Wiping power, i.e. can increase the frictional force between plastic, thermal-insulation pipeline and earth, and this frictional force can effectively overcome answers cold-thermal effect
The internal stress caused, need not anchor plastic, thermal-insulation pipeline again, construct convenient, and reliability is higher.
Accompanying drawing explanation
In order to make the purpose of the present invention, technical scheme and beneficial effect clearer, the present invention provides drawings described below to carry out
Illustrate:
Fig. 1 is the One-step production prefabricated plastic of the production technology being applicable to One-step production prefabricated plastic utilidor of the present invention
The structural representation of the production line of utilidor；
Fig. 2 is the structural representation of continuous foamed shaped device；
Fig. 3 is the structural representation of extrusion molding passage；
Fig. 4 is the structural representation of continuous fit body；
Fig. 5 is to use the production technology of the present embodiment One-step production prefabricated plastic utilidor to produce the one of which obtained to mould
The structural representation of material utilidor.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art is permissible
It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
The production technology of the One-step production prefabricated plastic utilidor of the present embodiment, comprises the steps:
1) extrusion molding work inner tube: utilize the work inner tube 24 of extrusion device 1 continuously shaped plastic, thermal-insulation pipeline, the present embodiment
Extrusion device 1 include plastic extruder and be arranged on described plastic extruder the shaping mould for shaping work inner tube 24
Tool, work inner tube 24 can use the materials such as PB, PPS or PE-X to make, and concrete, the work inner tube 24 of the present embodiment uses
PE-X material is made, concrete, and the extrusion temperature of plastic extruder is arranged according to material requirements.
2) sizing cooling work inner tube: utilize cooling apparatus for shaping 2 to shape cooling work inner tube 24, the sizing of the present embodiment
Chiller 2 includes negative pressure shaping case and the chiller being set to one, is provided with in work of shaping in negative pressure shaping case
The shaper of pipe, chiller can be water cooling plant and air cooling equipment, and the chiller of the present embodiment uses water cooling plant.
Concrete, the work inner tube of the present embodiment, after sizing cooling, is additionally provided with compound working procedure, in compound working procedure, utilizes compound dress
Put 9 in the work inner tube after cooling apparatus for shaping 2 sizing cooling, process composite bed and/or process heat tracing in work inner tube
Cable hole and leakage alarm line, composite bed can be enhancement Layer and barrier layer, and the present embodiment utilizes compound working procedure in work inner tube
Being provided with enhancement Layer 27, the interior outside of enhancement Layer 27 is respectively equipped with inner structural layer 28 and outer structural layer 29, inner structural layer 28 and work
Make to be provided with between inner tube 24 barrier layer 30, meanwhile, work inner tube 24 is additionally provided with heat tracing cable hole 31.Concrete, enhancement Layer 27
Material uses the materials such as glass fibre sheet, aramid fiber or carbon fiber to make, and barrier layer 30 uses EVOH material to make.
3) in work inner tube, heat-insulation layer is wrapped up continuously: utilize continuous foamed shaped device 3 to wrap continuously in work inner tube
Wrap up in heat-insulation layer 25.Concrete, the continuous foamed shaped device of the present embodiment includes foaming machine 7 and for continuous in work inner tube
The heat-insulation layer shaped device 8 of parcel heat-insulation layer.The heat-insulation layer shaped device 8 of the present embodiment includes that frame 9, frame 9 are provided with two
Individual conveyer mechanism, conveyer mechanism includes at least two belt wheel and the conveyer belt 10 being sleeved on belt wheel, and two of which is adjacent
Belt wheel centered by the parallel work belt wheel 10a of direction of feed of line and work inner tube, in two conveyer mechanisms, position respectively
Conveyer belt 10 between two corresponding work belt wheel 10a is parallel to each other；Heat-insulation layer mould is installed on conveyer belt 10
Unit 11, one end end face of heat-insulation layer forming mold unit 11 conveyer belt 10 dorsad is provided with half slot 12；It is separately positioned on two
Heat-insulation layer forming mold unit 11 on bar conveyer belt 10 and between two corresponding work belt wheel 10a cooperate and by
Half slot 12 split forms the circular tube shaped heat-insulation layer shaping channel 13 passed for work inner tube, heat-insulation layer shaping channel 13 several
What size is more than the physical dimension of work inner tube；The expanded material delivery outlet of foaming machine 7 is positioned at described heat-insulation layer shaping channel 13
In.The belt wheel of two conveyer mechanisms of the present embodiment is disposed as two, and i.e. two belt wheels are work belt wheel 10a.Arrange
Expanded material delivery outlet on foaming machine 7 is located close in the heat-insulation layer shaping channel 13 of cooling apparatus for shaping 2 one end, i.e. sends out
The expanded material delivery outlet of bubble machine 7, near one end of the work inner tube entrance heat-insulation layer shaping channel 13 of plastic, thermal-insulation pipeline, makes
Used time, utilize foaming machine 7 to be injected into by expanded material between work inner tube and heat-insulation layer shaping channel 13, i.e. work outside inner tube
Heat-insulation layer forming area is formed between wall and heat-insulation layer shaping channel 13 inwall.In the present embodiment, it is arranged on conveyer belt 10 also
The sidewall between adjacent two heat-insulation layer forming mold unit 11 between two work belt wheel 10a fits tightly, and i.e. protects
Temperature formable layer die unit 11 is without being spaced apart and arranged on conveyer belt 10.Concrete, in process of production, through cooling apparatus for shaping
Work inner tube after 2 sizing coolings enters the interior and continuous feeding forward of heat-insulation layer shaping channel 13, two conveyer belts 10 of regulation
Linear velocity is equal with the feed speed of the work inner tube of plastic, thermal-insulation pipeline, and makes the guarantor between two work belt wheel 10a
The moving direction of temperature formable layer die unit 11 is identical with the direction of feed of work inner tube, utilizes foaming machine 7 will foam continuously
Material is poured between work inner tube and heat-insulation layer shaping channel, makes expanded material shape under the effect of heat-insulation layer shaping channel
It is wrapped in work inner tube formation heat-insulation layer.The heat-insulation layer of the present embodiment uses EPU material to make.
4) fit continuously on heat-insulation layer outer jacket: utilize casing 4 laminating outer jacket 26 continuously on heat-insulation layer；Tool
Body, it is provided with the continuous fit body for outer jacket of fitting continuously on heat-insulation layer in the casing 5 of the present embodiment, continuously
Fit body includes mould 14 of fitting, and is provided with the central through hole 15 passed for pipeline, in laminating mould 14 in laminating mould 14
It is provided with outer layer extrusion molding structure；The outer layer extrusion molding structure of the present embodiment includes the charging aperture being arranged on laminating mould 14
16 lead to the material buffer chamber 17 that charging aperture 16 communicates and the extrusion molding passage 18 coaxial with central through hole 15, extrusion molding
Road 18 communicates with material buffer chamber 17；Laminating mould 14 is provided with in the sealing structure with tube fit, and laminating mould 14 and sets
Have at the negative port 19 sealed between structure and the discharging opening of extrusion molding passage 18, negative port 19 and central through hole 15
Communicate；
It is additionally provided with the heater 20 for heating pipeline outer wall on the inwall of the central through hole 15 of the present embodiment, heats at needs
In the case of to work outer wall of inner tube heating, with improve laminating intensity.The extrusion molding passage 18 of the present embodiment is that internal diameter is constant
Cylindrical passageway, and the discharging opening of extrusion molding passage 18 is positioned at laminating mould 14 and passes the end of central through hole 15 one end at pipeline
On face.Certainly, extrusion molding passage 18 may be arranged as tapered channel, it is possible to by the discharging opening position of extrusion molding passage 18
On the inwall of central through hole 15 or be positioned on the end face of laminating mould 14, its principle is suitable, is not repeated.Sealing structure includes
The sealing ring 21 being fixedly mounted on laminating mould 14 and coordinate with the periphery wall of pipeline；Laminating mould 14 includes fixing connection
Laminating head 14a and laminating support 14b, the axle coordinating face and central through hole 15 between laminating head 14a and laminating support 14b
Line intersects, and outer layer extrusion molding structure is arranged on laminating head 14a, seals structure and is arranged on laminating support 14b；This enforcement
Use screw 22 to fix between the laminating head 14a of example with laminating support 14b to be connected, and laminating head 14a and laminating support 14b
Between be provided with alignment pin 23；
Concrete, in process of production, the pipeline after continuous foamed shaped device 3 wraps up heat-insulation layer enters central through hole 15
In, the extrusion molding speed of regulation outer layer extrusion molding structure is equal with the feed speed of pipeline, and connects on negative port 19
Connecing vacuum extractor evacuation, the vacuum of evacuation is 0.01-0.1MPa, and the vacuum of the present embodiment evacuation is
0.05MPa, it is possible to meeting the requirement that laminating produces continuously of outer jacket, concrete, the vacuum of evacuation is according to different materials
Matter and outer jacket thickness are arranged.The outer jacket of the present embodiment uses PE material to make, and the extrusion temperature of outer jacket 26 is according to this PE
Properties of materials sets, and is not repeated.
Further, the production technology of the One-step production prefabricated plastic utilidor of the present embodiment also includes step 5): lead
Draw rolling: utilize traction apparatus 5 to draw the plastic, thermal-insulation pipeline continuous feed after casing laminating outer jacket, and utilize receipts
Winding apparatus 6 rolling produces the plastic, thermal-insulation pipeline obtained.
Embodiment described above is only the preferred embodiment lifted by absolutely proving the present invention, the protection model of the present invention
Enclose and be not limited to this.The equivalent that those skilled in the art are made on the basis of the present invention substitutes or conversion, all in the present invention
Protection domain within.Protection scope of the present invention is as the criterion with claims.
Claims (10)
1. the production technology of an One-step production prefabricated plastic utilidor, it is characterised in that: comprise the steps:
1) extrusion molding work inner tube: utilize the work inner tube of extrusion device continuously shaped plastic, thermal-insulation pipeline；
2) sizing cooling work inner tube: utilize cooling apparatus for shaping sizing cooling work inner tube；
3) in work inner tube, heat-insulation layer is wrapped up continuously: utilize continuous foamed shaped device to wrap up insulation continuously in work inner tube
Layer；
4) fit continuously on heat-insulation layer outer jacket: utilize casing to fit continuously on heat-insulation layer outer jacket.
The production technology of One-step production prefabricated plastic utilidor the most according to claim 1, it is characterised in that: described
In step 1), described extrusion device includes plastic extruder and is arranged on described plastic extruder for shaping work inner tube
Mould.
The production technology of One-step production prefabricated plastic utilidor the most according to claim 1, it is characterised in that: described
Step 2) in, described cooling apparatus for shaping includes negative pressure shaping case and chiller, the described negative pressure shaping case being set to one
Inside it is provided with the shaper for work inner tube of shaping.
The production technology of One-step production prefabricated plastic utilidor the most according to claim 1, it is characterised in that: described
In step 3), described continuous foamed shaped device includes foaming machine and for wrapping up the insulation of heat-insulation layer in work inner tube continuously
Formable layer device；Described heat-insulation layer shaped device includes that frame, described frame are provided with two conveyer mechanisms, described conveyer belt
Mechanism includes at least two belt wheel and the conveyer belt being sleeved on described belt wheel, connects centered by the described belt wheel that two of which is adjacent
The work belt wheel that line is parallel with the direction of feed of work inner tube, in two described conveyer mechanisms, lays respectively at two of correspondence
Conveyer belt between described work belt wheel is parallel to each other；Heat-insulation layer forming mold unit, described guarantor are installed on described conveyer belt
One end end face of the temperature the most described conveyer belt of formable layer die unit is provided with half slot；It is separately positioned on two described conveyer belts
Upper and between two corresponding described work belt wheels heat-insulation layer forming mold unit cooperate and by described half slot
Split forms the circular tube shaped heat-insulation layer shaping channel passed for work inner tube, and the physical dimension of described heat-insulation layer shaping channel is big
Physical dimension in work inner tube；The expanded material delivery outlet of described foaming machine is positioned at described heat-insulation layer shaping channel.
The production technology of One-step production prefabricated plastic utilidor the most according to claim 4, it is characterised in that: through institute
State in the work inner tube after cooling apparatus for shaping sizing cooling enters described heat-insulation layer shaping channel and feeding forward continuously, regulation
Article two, the linear velocity of described conveyer belt is equal with the feed speed of the work inner tube of plastic, thermal-insulation pipeline, and makes to be positioned at described in two
The moving direction of the described heat-insulation layer forming mold unit between work belt wheel is identical with the direction of feed of work inner tube, utilizes and sends out
Expanded material is poured between work inner tube and heat-insulation layer shaping channel by bubble machine continuously, makes expanded material in heat-insulation layer molding
Under the effect of passage, sizing is wrapped in work inner tube formation heat-insulation layer.
The production technology of One-step production prefabricated plastic utilidor the most according to claim 1, it is characterised in that: described
In step 4), in described casing, it is provided with the continuous fit body for outer jacket of fitting continuously on heat-insulation layer, described company
Continuous fit body includes mould of fitting, and is provided with the central through hole passed for pipeline, described laminating mould in described laminating mould
Inside it is provided with outer layer extrusion molding structure；Charging aperture that described outer layer extrusion molding structure includes being arranged on described laminating mould,
With the material buffer chamber that described charging aperture communicates and the extrusion molding passage coaxial with described central through hole, described extrusion molding is led to
Road communicates with described material buffer chamber；Described laminating mould is provided with the sealing structure with tube fit, and described laminating mould
Be provided with the negative port between the discharging opening of described sealing structure and described extrusion molding passage, described negative port with
Described central through hole communicates.
The production technology of One-step production prefabricated plastic utilidor the most according to claim 6, it is characterised in that: through institute
State the pipeline after continuous foamed shaped device parcel heat-insulation layer to enter in described central through hole, regulate described outer layer extrusion molding knot
The extrusion molding speed of structure is equal with the feed speed of pipeline, and connects vacuum extractor evacuation on described negative port,
The vacuum of evacuation is 0.01-0.1MPa.
The production technology of One-step production prefabricated plastic utilidor the most according to claim 1, it is characterised in that: also wrap
Include and be arranged on described step 2) and step 3) between compound working procedure, utilize set composite shaping through described cooling apparatus for shaping
Process composite bed in work inner tube after cooling and/or process heat tracing cable hole and leakage alarm line in work inner tube.
The production technology of One-step production prefabricated plastic utilidor the most according to claim 1, it is characterised in that: also wrap
Include step 5): draw rolling: utilize traction apparatus traction plastic, thermal-insulation pipeline after casing laminating outer jacket to enter continuously
Give, and utilize wrap-up rolling to produce the plastic, thermal-insulation pipeline obtained.
10. according to the production technology of the One-step production prefabricated plastic utilidor described in any one of claim 1-9, its feature
It is: described work inner tube uses PB, PPS or PE-X to make；Described heat-insulation layer uses EPU material to make；Described outer jacket is adopted
Make with PE.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610367148.8A CN105904749A (en) | 2016-05-30 | 2016-05-30 | Production technology for producing prefabricated plastic thermal insulation pipeline through one-step method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610367148.8A CN105904749A (en) | 2016-05-30 | 2016-05-30 | Production technology for producing prefabricated plastic thermal insulation pipeline through one-step method |
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Family
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| CN201610367148.8A Pending CN105904749A (en) | 2016-05-30 | 2016-05-30 | Production technology for producing prefabricated plastic thermal insulation pipeline through one-step method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035756A (en) * | 2017-05-19 | 2017-08-11 | 江苏中成紧固技术发展股份有限公司 | Wind-powered electricity generation crab-bolt aseptic processing system based on automatic assembly line |
| CN110131526A (en) * | 2019-05-29 | 2019-08-16 | 诸暨市元森塑胶科技有限公司 | A kind of two-layer compound insulating tube and its processing technology |
| CN113580622A (en) * | 2021-07-20 | 2021-11-02 | 京华派克邯郸机械科技有限公司 | Continuous production process of composite heat-insulating pipe |
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| JPS58132526A (en) * | 1982-02-02 | 1983-08-06 | Takeuchi Press Kogyo Kk | Manufacture of laminated tube and die used therefor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035756A (en) * | 2017-05-19 | 2017-08-11 | 江苏中成紧固技术发展股份有限公司 | Wind-powered electricity generation crab-bolt aseptic processing system based on automatic assembly line |
| CN110131526A (en) * | 2019-05-29 | 2019-08-16 | 诸暨市元森塑胶科技有限公司 | A kind of two-layer compound insulating tube and its processing technology |
| CN113580622A (en) * | 2021-07-20 | 2021-11-02 | 京华派克邯郸机械科技有限公司 | Continuous production process of composite heat-insulating pipe |
| CN113580622B (en) * | 2021-07-20 | 2023-03-14 | 京华派克邯郸机械科技有限公司 | Continuous production process of composite heat-insulating pipe |
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Application publication date: 20160831 |