CN202507507U - One-die double-extrusion flow splitting die for extrusion forming of polypropylene pipe - Google Patents

One-die double-extrusion flow splitting die for extrusion forming of polypropylene pipe Download PDF

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Publication number
CN202507507U
CN202507507U CN2012200947347U CN201220094734U CN202507507U CN 202507507 U CN202507507 U CN 202507507U CN 2012200947347 U CN2012200947347 U CN 2012200947347U CN 201220094734 U CN201220094734 U CN 201220094734U CN 202507507 U CN202507507 U CN 202507507U
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CN
China
Prior art keywords
die
mould
extrusion
flow splitting
double
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2012200947347U
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Chinese (zh)
Inventor
刘芳兴
王景旺
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TIANJIN ZHONGCAI PROFILES CO Ltd
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TIANJIN ZHONGCAI PROFILES CO Ltd
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Priority to CN2012200947347U priority Critical patent/CN202507507U/en
Application granted granted Critical
Publication of CN202507507U publication Critical patent/CN202507507U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a one-die double-extrusion flow splitting die for extrusion forming of a polypropylene pipe. The one-die double-extrusion flow splitting die is a cuboid consisting of an upper die and a lower die which have the same sizes; the upper die and the lower die are provided with positioning holes; the upper die and the lower die are connected into one whole body through bolts; a main flow passage and two branch flow passages which are inclined outwards are formed inside the whole body; a flow splitting die is provided with a material inlet and two material outlets; the flow splitting die is arranged between an extruder and two forming dies; the material inlet of the flow splitting die is centered with a flow convergency core material outlet of the extruder and is fixed through bolts and flanges; two material outlets of the flow splitting die are respectively centered with material inlets of the two forming dies and are fixed by bolts and flanges. The one-die double-extrusion flow splitting die has the advantages that the die has simple structure and is easy to implement; due to the reasonable design of the diameters of the lengths of the flow passages, the stable extrusion pressure can be ensured; on the premise of stable pipe performance and production, the capacity of the PP-R (polypropylene) pipe is improved by 85 percent to 95 percent; and the one-die double-extrusion flow splitting die has obvious economic benefits and social benefits.

Description

An a kind of mould that is used for the polypropylene pipe extrusion molding is two to go out to shunt mould
Technical field
The utility model relates to plastic extruding forming Mould design technology, and a particularly a kind of mould that is used for the polypropylene pipe extrusion molding is two to go out to shunt mould.
Background technology
Random copolymerization polypropylene pipe (being the PP-R pipe) is that Europe is in the novel plastic pipeline product of the Application and Development nineties in 20th century; PP-R pipe is except having the characteristics such as general plastic tube is in light weight, corrosion-resistant, non-scaling, also have good heat resistance, heat preservation energy-saving, non-toxic sanitary, easy for installation, connect advantages such as reliable.Its excellent cost performance makes it become the maximum a kind of water supply line of employing in the present house ornamentation engineering.
PP-R tubing is produced through extruding processing, and domestic each big production firm has more stable moulding process at present, but ubiquity the problem that production efficiency is low, the extruder production capacity fails to give full play to.If improve line speed in process of production merely, problems such as tube wall thickness fluctuation, performance reduction can appear again, and cause production stability to descend.
Be head it off; We grope through scrap build and test of many times; Designed and developed that an a kind of mould is two to go out PP-R tubing extrusion molding mould, utilized a set of equipment and mould can produce two PP-R simultaneously and manage, effectively improved the integrated production capacity of PP-R tubing.
The utility model content
The purpose of the utility model is to above-mentioned existing problems; Provide that an a kind of mould that is used for the polypropylene pipe extrusion molding is two to go out to shunt mould; This shunting mould is into two structures, easy to implement that go out; Can under the prerequisite that guarantees pipe performance and production stability, significantly improve the integrated production capacity of PP-R tubing, have tangible economic benefit and social benefit.
The technical scheme of the utility model:
An a kind of mould that is used for the polypropylene pipe extrusion molding is two to go out to shunt mould; Be arranged between extruder and two moulds; The cuboid of forming by measure-alike upper die and lower die; The four corners position of upper die and lower die is respectively equipped with four dowel holes and four positioning through hole, and patrix is provided with fixed via, and counterdie is provided with fixing threaded hole; Upper die and lower die connect as one and form in inside a sprue and two outward-dipping runners and are symmetrical set through bolt; Two sides of shunting mould respectively are provided with a thermocouple temperature control hole, and the shunting mould is provided with a material inlet and two material outlets, and front and rear surfaces is respectively equipped with the screw that is connected with mould with extruder.
The sprue diameter of said shunting mould is 40-70mm, and two runner point diameters are 35-58mm, and the rear end diameter is 32-55mm, and the length of two runners is 160-200mm, and angle is the 60-70 degree.
The diameter of said upper die and lower die locating hole is 15-20mm, and patrix fixing hole diameter is 12.5mm, and the counterdie fixing threaded hole is M12, and the diameter of shunting mould bolt penetration hole is 12-15mm.
This shunting mould is arranged between extruder and two moulds; The merging core material outlet centering of its material inlet and extruder is also fixed through bolt and flange, and two material outlets are fixed with the material inlet centering of two moulds and through bolt and flange respectively.
The advantage of the utility model is: this shunting mould structure is simple, easy to implement; Appropriate design through flow diameter and length can guarantee stable extrusion pressure; Improve PP-R tubing production capacity 85%-95% at pipe performance under the stable prerequisite with producing, have tangible economic benefit and social benefit.
Description of drawings
Fig. 1 is that the shunting mould is overlooked the sectional structure sketch map.
Fig. 2 is that the shunting mould is faced structural representation.
Among the figure: 1. shunting upper mould 2. is shunted lower moulds 3. locating holes 4. bolts 5. sprues 6. runners 7. thermocouple temperature control holes 8. material inlets, 9. material outlets, 10. screws
The specific embodiment
Embodiment:
An a kind of mould that is used for the polypropylene pipe extrusion molding is two to go out to shunt mould; Be arranged between extruder and two moulds; The cuboid of forming by measure-alike patrix 1 and counterdie 2; The four corners position of patrix 1 and counterdie 2 is respectively equipped with four dowel holes and four locating holes 3, and patrix 1 is provided with fixed via, and counterdie 2 is provided with fixing threaded hole; Patrix 1 connects as one and forms in inside a sprue 5 and two outward-dipping runners 6 and is symmetrical set through bolt 4 with counterdie 2; Two sides of shunting mould respectively are provided with a thermocouple temperature control hole 7, and the shunting mould is provided with a material inlet 8 and two material outlets 9, and front and rear surfaces is respectively equipped with the screw 10 that is connected with mould with extruder.This shunting mould is arranged between extruder and two moulds; Its material inlet 8 is fixed with the merging core material outlet centering of extruder and through bolt and flange, and two material outlets 9 are fixed with the material inlet centering of two moulds and through bolt and flange respectively.
Among this embodiment, the sprue diameter of shunting mould is 52mm, and two runner point diameters are 42mm, and the rear end diameter is 38mm, and the length of two runners is 175mm, and angle is 65 degree; The diameter of upper die and lower die locating hole is 16mm, and patrix fixing hole diameter is 12.5mm, and the counterdie fixing threaded hole is M12, and the diameter of shunting mould bolt penetration hole is 13mm, and bolt is M12, and quantity is 10.
During use, the material after extruder plasticizing gets into the shunting mould, through two go out the runner shunting after, respectively through two cover PP-R moulds, can make the material forming of fusion, finalize the design through calibration sleeve, cooling water tank again, be extruded into PP-R tubing.

Claims (3)

1. a mould that is used for the polypropylene pipe extrusion molding is two goes out to shunt mould; It is characterized in that: be arranged between extruder and two moulds; The cuboid of forming by measure-alike upper die and lower die; The four corners position of upper die and lower die is respectively equipped with four dowel holes and four positioning through hole, and patrix is provided with fixed via, and counterdie is provided with fixing threaded hole; Upper die and lower die connect as one and form in inside a sprue and two outward-dipping runners and are symmetrical set through bolt; Two sides of shunting mould respectively are provided with a thermocouple temperature control hole, and the shunting mould is provided with a material inlet and two material outlets, and front and rear surfaces is respectively equipped with the screw that is connected with mould with extruder.
2. go out to shunt mould according to the said mould that is used for the polypropylene pipe extrusion molding of claim 1 is two; It is characterized in that: the sprue diameter of said shunting mould is 40-70mm; Two runner point diameters are 35-58mm; The rear end diameter is 32-55mm, and the length of two runners is 160-200mm, and angle is the 60-70 degree.
3. go out to shunt mould according to the said mould that is used for the polypropylene pipe extrusion molding of claim 1 is two; It is characterized in that: the diameter of said upper die and lower die locating hole is 15-20mm; Patrix fixing hole diameter is 12.5mm; The counterdie fixing threaded hole is M12, and the diameter of shunting mould bolt penetration hole is 12-15mm.
CN2012200947347U 2012-03-14 2012-03-14 One-die double-extrusion flow splitting die for extrusion forming of polypropylene pipe Expired - Lifetime CN202507507U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200947347U CN202507507U (en) 2012-03-14 2012-03-14 One-die double-extrusion flow splitting die for extrusion forming of polypropylene pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200947347U CN202507507U (en) 2012-03-14 2012-03-14 One-die double-extrusion flow splitting die for extrusion forming of polypropylene pipe

Publications (1)

Publication Number Publication Date
CN202507507U true CN202507507U (en) 2012-10-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012200947347U Expired - Lifetime CN202507507U (en) 2012-03-14 2012-03-14 One-die double-extrusion flow splitting die for extrusion forming of polypropylene pipe

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112192823A (en) * 2020-09-17 2021-01-08 江苏亨通光电股份有限公司 Double-heterochromatic strip sheath and extrusion die thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112192823A (en) * 2020-09-17 2021-01-08 江苏亨通光电股份有限公司 Double-heterochromatic strip sheath and extrusion die thereof

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Granted publication date: 20121031