CN101670665A - Online biaxial-orienting PVC extrusion molding mould - Google Patents
Online biaxial-orienting PVC extrusion molding mould Download PDFInfo
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- CN101670665A CN101670665A CN200910153547A CN200910153547A CN101670665A CN 101670665 A CN101670665 A CN 101670665A CN 200910153547 A CN200910153547 A CN 200910153547A CN 200910153547 A CN200910153547 A CN 200910153547A CN 101670665 A CN101670665 A CN 101670665A
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- dilates
- expansion
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- skelp
- extrusion molding
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- Extrusion Moulding Of Plastics Or The Like (AREA)
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to an online biaxial-orienting PVC extrusion molding mould comprising a skelp molding area, an expansion transition area and an annular expansion and molding area and also provided with an expansion mold core. A heating pressure channel is arranged in the skelp molding area. The section ratio between an expanded pipe material and a skelp is 1 :( 1.10-1.30). An expansion pressure balancing device is arranged in the expansion transition area. An expansion angle of the expansion transition area is 30-60 degrees. Annular expansion ratio of the annular expansion and molding area is greater than or equal to 1:2. The mould has a compression ratio of 1 :( 6-12). A straight section of the skelp molding area is 5-12 times as long as the diameter of the skelp. The mould has theadvantages that an online biaxial-oriented modified pressure-bearing pipe material with good strength and tenacity and smooth and flat surface can be produced, and the mould saves material and energyand can implement industrialization.
Description
Technical field
The invention belongs to a kind of Polymer Processing mould, especially a kind of online biaxial-orienting PVC extrusion molding mould.
Background technology
Be stretching in when thermoplastic plastic pipe is extruded that the longitudinal and transverse two directions on plane carry out for biaxial stretch-formed.Goods after biaxial stretch-formed have showed higher physical and mechanical property, its intensity and toughness have been improved greatly, and reduced the consumption of material significantly, wide application is arranged, as can be applicable to feed pipe market, mine pipeline, non-excavation laying and reparation aspects such as pipeline market, gas ductwork.
The patent No. is that 03117548.1 Chinese patent discloses a kind of " manufacture method of biaxial orientation hard polyethylene pipe " on August 27th, 2003, this method is by polyvinyl chloride and batching,, finish biaxial orientation and stretch by mould through a series of step, obtain pipe material product.The present invention does not limit the concrete property of mould, can't guarantee the intensity and the toughness of pipe material product.
Summary of the invention
The present invention is directed to the shortcoming of above-mentioned prior art, provide a kind of and can produce the online biaxial orientation modification that shows good intensity and toughness, DN (20-630) mm, the online biaxial-orienting PVC extrusion molding mould of PN (0.8-2.5) MPa pressure-bearing pipe material.
The present invention solves the technical scheme that its technical problem adopts:
This online biaxial-orienting PVC extrusion molding mould, comprise pipe embryo forming district, dilate transition region and hoop dilates shaping area, and be provided with and dilate core rod, the pipe embryo forming is provided with the heated pressure passage in the district, dilating tubing cross section, back is 1 with pipe embryo section ratio: (1.10-1.30), dilate the transition region place and be provided with and dilate pressure equaliser, the angle that dilates that dilates transition region is (30-60) °, and the hoop that hoop dilates shaping area dilates ratio 〉=1: 2.
As preferably, described mould has 1: compression ratio (6-12), the flat segments length in pipe embryo forming district for the 5-12 of pipe embryo diameter doubly.
As preferably, the described core rod that dilates is replaceable, to produce the tubing of various different sizes.
The effect that the present invention is useful is:
One, chooses suitable dilating the angle and dilate the transition section, can guarantee to manage the circle of embryo along dilating;
Two, the hoop hoop that dilates shaping area dilates than enough big pressure equalisers that is provided with that cooperates, and has guaranteed that high orientation can make the cooling of in time finalizing the design of tubing after the orientation again;
Three, the heated pressure passage that is provided with in pipe embryo forming district makes hard PVC carry out plastic elongation in certain temperature range and makes its strand obtain certain orientation, demonstrates the goods of excellent mechanical performances;
Four, mould is chosen suitable compression ratio and glacing flatness, can obtain high level orientation and the smooth smooth tubing of surfaces externally and internally;
Five, can under the prerequisite that guarantees serviceability, use the tube wall thickness of specification can reduce more than 1/3 saving metal material and energy.
Six, not only can be applicable to and extrude the online biaxial orientation modification of PVC pressure-bearing pipe material, also can apply to the circular solid wall pipe of the PVC of other field and extrude online biaxial orientation modification, influence widely, can implement industrialization production.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Description of reference numerals: pipe embryo forming district 1, dilate transition region 2, hoop dilates shaping area 3, dilates core rod 4, dilates pressure equaliser 5, heated pressure passage 6.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
Embodiment 1:DN200 * 4.4, the online biaxial orientation pressure-bearing pipe material of PN1.0 are extruded.To formulation material in accordance with regulations, after mixing, add double screw extruder, entering mould of the present invention under the process conditions of regulation after fully plasticizing is extruded, material enters pipe embryo forming district 1, dilates transition region 2 after second-compressed, hoop dilates shaping area 3, cooling and shaping rapidly under traction.The characteristic value of mould: compression ratio is 1: (8-9), flat segments length for (6-7) of pipe embryo diameter doubly, the cross section that dilates back tubing is 1 with pipe embryo section ratio: (1.20-1.25), hoop dilates ratio 〉=1: 2, dilate the angle and be (40-50) °; Draft temperature is (135-145) ℃, dilates with medium temperature to be (120-130) ℃, and pressure is (10-20) kPa, and cooling off with medium temperature outward is room temperature, and hauling speed is (0.35-0.45) m/min.The tubing main performance: impact resistance, 0 ℃, 1h, 10kg * 2m tup diameter 25mm impacts 25 times, does not have and destroys, TIR＜10%; Tubing moment burst pressure is 2.8MPa.
Embodiment 2: implementation process is identical with embodiment 1, the characteristic value of mould: compression ratio is 1: (7-8), flat segments length for (7-8) of pipe embryo diameter doubly, the cross section that dilates back tubing is 1 with pipe embryo section ratio: (1.25-1.30), hoop dilates ratio 〉=1: 2, and dilating the angle is 35 °; Draft temperature is (130-140) ℃, dilates with medium temperature to be (120-135) ℃, and pressure is (8-14) kPa, and cooling off with medium temperature outward is room temperature, and hauling speed is (0.65-0.80) m/min.The tubing main performance: impact resistance, 0 ℃, 1h, 4kg * 2m tup diameter 25mm impacts 25 times, does not have and destroys, TIR＜10%; Tubing moment burst pressure is 3.6MPa.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (3)
1, a kind of online biaxial-orienting PVC extrusion molding mould, comprise pipe embryo forming district (1), dilate transition region (2) and hoop dilates shaping area (3), and be provided with and dilate core rod (4), it is characterized in that: be provided with heated pressure passage (6) in the pipe embryo forming district (1), dilating tubing cross section, back is 1 with pipe embryo section ratio: 1.10-1.30, dilating transition region (2) locates to be provided with and dilates pressure equaliser (5), the angle that dilates that dilates transition region (2) is 30-60 °, and the hoop that hoop dilates shaping area (3) dilates ratio 〉=1: 2.
2, online biaxial-orienting PVC extrusion molding mould according to claim 1, it is characterized in that: described mould has 1: the compression ratio of 6-12, the flat segments length in described pipe embryo forming district (1) is 5-12 times of pipe embryo diameter.
3, online biaxial-orienting PVC extrusion molding mould according to claim 1 is characterized in that: the described core rod (4) that dilates is replaceable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101535474A CN101670665B (en) | 2009-10-19 | 2009-10-19 | Online biaxial-orienting PVC extrusion molding mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101535474A CN101670665B (en) | 2009-10-19 | 2009-10-19 | Online biaxial-orienting PVC extrusion molding mould |
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| Publication Number | Publication Date |
|---|---|
| CN101670665A true CN101670665A (en) | 2010-03-17 |
| CN101670665B CN101670665B (en) | 2011-06-15 |
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| CN2009101535474A Active CN101670665B (en) | 2009-10-19 | 2009-10-19 | Online biaxial-orienting PVC extrusion molding mould |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104002465A (en) * | 2014-05-15 | 2014-08-27 | 华南理工大学 | Expanding-microshrinking biaxially-stretched pipe continuous molding method and equipment |
| CN104827651A (en) * | 2015-06-09 | 2015-08-12 | 佛山市日丰企业有限公司 | Online two-way stretching device of plastic pipes |
| CN105034399A (en) * | 2015-08-26 | 2015-11-11 | 安徽永高塑业发展有限公司 | Molding method for biaxial orientation polyvinyl chloride pipe for water supply |
| CN105599314A (en) * | 2015-12-28 | 2016-05-25 | 山东华信塑胶股份有限公司 | Continuous forming device of biaxial orientation polyvinyl chloride pipe and operating method |
| CN105690787A (en) * | 2016-03-28 | 2016-06-22 | 张家港市斯维达机械有限公司 | PVC-O tube production line |
| CN106346739A (en) * | 2016-08-31 | 2017-01-25 | 浙江飞龙管业有限公司 | Production tooling and production method of solid-wall CO pipe |
| CN106366502A (en) * | 2016-08-29 | 2017-02-01 | 武汉金牛经济发展有限公司 | Off-line two-way stretched PVC(Polyvinyl Chloride) pipe preparation method and device |
| CN106738831A (en) * | 2016-12-01 | 2017-05-31 | 四川府通管业有限公司 | The production method and expander die and production line of polyolefin preorientation pipeline |
| CN109228238A (en) * | 2018-08-15 | 2019-01-18 | 广东联塑科技实业有限公司 | A kind of double orientation plastic pipe extruder head |
| CN109603581A (en) * | 2018-12-28 | 2019-04-12 | 长园电子（东莞）有限公司 | A kind of polytetrafluoroethylhollow hollow fiber membrane biaxial tension mold |
-
2009
- 2009-10-19 CN CN2009101535474A patent/CN101670665B/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104002465A (en) * | 2014-05-15 | 2014-08-27 | 华南理工大学 | Expanding-microshrinking biaxially-stretched pipe continuous molding method and equipment |
| CN104827651B (en) * | 2015-06-09 | 2018-01-09 | 日丰企业（佛山）有限公司 | A kind of online two-way stretch device of plastic pipe |
| CN104827651A (en) * | 2015-06-09 | 2015-08-12 | 佛山市日丰企业有限公司 | Online two-way stretching device of plastic pipes |
| CN105034399A (en) * | 2015-08-26 | 2015-11-11 | 安徽永高塑业发展有限公司 | Molding method for biaxial orientation polyvinyl chloride pipe for water supply |
| CN105599314A (en) * | 2015-12-28 | 2016-05-25 | 山东华信塑胶股份有限公司 | Continuous forming device of biaxial orientation polyvinyl chloride pipe and operating method |
| CN105690787B (en) * | 2016-03-28 | 2017-09-15 | 张家港市斯维达机械有限公司 | A kind of PVC O pipe production lines |
| CN105690787A (en) * | 2016-03-28 | 2016-06-22 | 张家港市斯维达机械有限公司 | PVC-O tube production line |
| CN106366502A (en) * | 2016-08-29 | 2017-02-01 | 武汉金牛经济发展有限公司 | Off-line two-way stretched PVC(Polyvinyl Chloride) pipe preparation method and device |
| CN106346739A (en) * | 2016-08-31 | 2017-01-25 | 浙江飞龙管业有限公司 | Production tooling and production method of solid-wall CO pipe |
| CN106346739B (en) * | 2016-08-31 | 2018-12-14 | 浙江飞龙管业有限公司 | A kind of the production tooling and production method of solid wall CO pipe |
| CN106738831A (en) * | 2016-12-01 | 2017-05-31 | 四川府通管业有限公司 | The production method and expander die and production line of polyolefin preorientation pipeline |
| CN109228238A (en) * | 2018-08-15 | 2019-01-18 | 广东联塑科技实业有限公司 | A kind of double orientation plastic pipe extruder head |
| CN109603581A (en) * | 2018-12-28 | 2019-04-12 | 长园电子（东莞）有限公司 | A kind of polytetrafluoroethylhollow hollow fiber membrane biaxial tension mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101670665B (en) | 2011-06-15 |
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Effective date of registration: 20170301 Address after: 311116 Zhejiang City, Hangzhou Province Town Road, Yuhang District, Le Le Road, No. 5 Patentee after: Zhejiang Chi Tube Industry Co., Ltd. Address before: 311121 Yuhang industrial city, Zhejiang, Hangzhou Patentee before: Hangzhou Boda Plastics Technology Incorporated Co., Ltd. |