CN201249515Y - Plastic pipe extrusion die with high-speed extrusion, large caliber and thin wall - Google Patents
Plastic pipe extrusion die with high-speed extrusion, large caliber and thin wall Download PDFInfo
- Publication number
- CN201249515Y CN201249515Y CNU2008201158953U CN200820115895U CN201249515Y CN 201249515 Y CN201249515 Y CN 201249515Y CN U2008201158953 U CNU2008201158953 U CN U2008201158953U CN 200820115895 U CN200820115895 U CN 200820115895U CN 201249515 Y CN201249515 Y CN 201249515Y
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- core rod
- extrusion die
- high speed
- plastic tube
- walled plastic
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to an extrusion die of a plastic extruder for producing a thin-wall plastic pipe with high speed, which comprises a tubular machine body, a neck ring mold and a T-shaped spiral core rod, wherein a pressure buffering cavity with a radial opening is arranged at the inner end of the spiral core rod, at least two air inlets communicated with the pressure buffering cavity are arranged at the outer end of the spiral core rod, a coaxial hollow core rod communicated with the pressure buffering cavity is also arranged at the inner end of the spiral core rod, and the neck ring mold is positioned between the machine body and the hollow core rod. The solves the problems that mixed material thin points can occur in the original extrusion die and the molten mass divided flow trace is difficult to eliminate, and further eliminate the potential product quality problems due to the mixed material and molten mass divided flow trace, and can be widely used for producing a large-caliber plastic pipe, especially producing the agricultural large-caliber PE water delivery hose.
Description
Affiliated technical field
The utility model relates to a kind of plastic extruder extrusion die that is used for high-speed production thin-walled plastic pipe.
Background technology
At present, the known technology that is used for production thin-walled plastic pipe is to use the right angle to extrude the circular seam type extrusion die, or directly squeezes cribbing type extrusion die.The circular seam type extrusion die is extruded at the right angle, and its structure is a plug, gland, and handpiece body, a mouthful mould is linked in sequence.Shortcoming is that the design of curve runner when being used for large-caliber thin-walled plastic tube and producing can not meet the demands, the thin point of material can occur closing.In actual use, mostly can explosion occur closing the thin point of material, and life of product is short, expects the product hidden danger of Bao Dianshi in product so occur closing.When extrusion die connected main frame in addition, main frame was put with subsidiary engine and is met at right angles, and the area that takes up room relatively is bigger.The straight cribbing type extrusion die that squeezes, its structure is a body 1, shunting vertebra 1, the core support, shunting vertebra 2, body 2, plug, mouthful mould, pressing plate is linked in sequence.The extrusion die of this runner is because the existence of core support is divided into a plurality of fluids inevitably when plastic melt is flowed through.Like this, the ratio (extrusion die compression ratio) of support place and pipe exit sectional area will strengthen, to eliminate the vestige of melt shunting.However, in the tubing of some raw material is extruded, still finding to have the vestige of core support, although not too obvious sometimes, structurally always have the weak link on density and the mechanics, is the place of at first destroying mostly in the tubing burst pressure tests.These deficiencies of support shape extrusion die performance when tubing is extruded production at a high speed is particularly evident.Extrusion die is to guarantee the pipe internal pressure simultaneously, get through pore at the core support and make pipe external and internal pressure unanimity, when producing large-caliber thin-walled plastic tube rolling, a large amount of air of high-speed production pipe domestic demand enter, the too little meeting of pore causes at pipe external and internal pressure imbalance, booster in the production.Production efficiency is low.Pore increases, the increase of core support, and extrusion die increases, and the whole difficulty of processing of extrusion die increases, and can cause the vestige probability of product core support to increase, and production product speed is slow, and the finished product rate is low.
Summary of the invention
The purpose of this utility model be to solve existing large-caliber thin-walled plastic tube extrusion die aborning because of the product quality hidden danger that exists extrusion die to occur to close thin point of material and the difficult problem of eliminating the vestige of melt shunting to cause, produce the problem that product speed is slow, the finished product rate is low and life of product is short.
A kind of high speed is extruded large-caliber thin-walled plastic tube extrusion die, the body, mouthful mould and the "T"-shaped helix core rod that comprise tubular, helix core rod the inner is provided with a radially uncovered pressure buffer cavity, the helix core rod outer end is provided with at least two air admission holes that communicate with the cavity of above-mentioned pressure buffer, helix core rod the inner also is provided with the same shaft hollow plug that communicates with the cavity of pressure buffer, and mouthful mould is between body and hollow plug.
Above-mentioned high speed is extruded large-caliber thin-walled plastic tube extrusion die, at least two of the charging runners between the charging aperture on its helix core rod and its helical flow path.
Above-mentioned high speed is extruded large-caliber thin-walled plastic tube extrusion die, and its charging runner is six, and air admission hole is six, and each air admission hole is between two charging runners, to improve pressure balance, to produce product speed and production efficiency.
Above-mentioned high speed is extruded large-caliber thin-walled plastic tube extrusion die, and the pressure buffer cavity on its helix core rod is cylindric, and helix core rod is connected with hollow plug ladder positioning threads, is convenient to produce and install.
Above-mentioned high speed is extruded large-caliber thin-walled plastic tube extrusion die, its body and a mouthful mould end face location, and a mouthful mould is provided with pressing plate outward, and a pressing plate and a mouthful mould flat seal are convenient to install and the fixing port mould.
Above-mentioned high speed is extruded large-caliber thin-walled plastic tube extrusion die, and its body is provided with the adjustment screw that is used to regulate mouthful mould and hollow plug gap, makes the large-caliber thin-walled plastic tube of production reach the uniform purpose of wall thickness.
The utility model is because of adopting helix core rod; raw material is the spiral charging in extrusion die; solve original extrusion die and thin point of material and the difficult problem of eliminating the vestige of melt shunting can occur closing; and then eliminate because of closing the product quality hidden danger that vestige that material and melt shunt causes; improve the finished product rate, prolong life of product.On the other hand, helix core rod is provided with a plurality of pores and communicates with the pressure buffer cavity, it is slow to have solved the production product speed that pipe external and internal pressure imbalance causes in producing, that the problem that production efficiency is low, the utility model also have is simple in structure, be convenient to regulate, extrude resistance less, extrude evenly, the high and easily-disassembled advantage of output.Can be widely used in the production heavy-caliber plastic pipe, particularly produce agricultural heavy caliber PE delivery hose.
Description of drawings
Fig. 1 is the generalized section of the utility model embodiment,
Fig. 2 is an A-A view among Fig. 1.
In Fig. 1～2,1-pore, 2-charging aperture, 3-helix core rod, 4-charging runner, 5-helical flow path, 6-construction bolt, 7-body, 8-pressure buffer cavity.The 9-plug, 10-mouth mould, 11-pressing plate, 12-adjustment screw.
The specific embodiment
With reference to accompanying drawing 1～2, the utility model embodiment comprises the body 7 of tubular, mouth mould 10 and "T"-shaped helix core rod 3, charging runner 4 between charging aperture on the helix core rod and its helical flow path is six, helix core rod the inner is provided with a radially uncovered cylindric pressure buffer cavity 8, the helix core rod outer end is provided with six air admission holes 1 that communicate with the cavity of above-mentioned pressure buffer, each air admission hole is between two charging runners, helix core rod the inner also is provided with the same shaft hollow plug 9 that communicates with the cavity of pressure buffer, the cavity of pressure buffer, when producing large-caliber thin-walled plastic tube, constitute a pipe internal and external pressure balance passage with shaft hollow plug hollow, helix core rod is connected with hollow plug ladder positioning threads, the mouth mould is between body and hollow plug, a body and a mouthful mould end face location, the mouth mould is provided with pressing plate outward, a pressing plate and a mouthful mould flat seal, body is provided with the adjustment screw that is used to regulate mouthful mould and hollow plug gap, makes the large-caliber thin-walled plastic tube of production reach the uniform purpose of wall thickness.
Above-mentioned air admission hole and charging runner can be two, four or eight, can be according to the big or small concrete adjustment and the change of caliber.
Claims (6)
1. a high speed is extruded large-caliber thin-walled plastic tube extrusion die, the body, mouthful mould and the "T"-shaped helix core rod that comprise tubular, it is characterized in that helix core rod the inner is provided with a radially uncovered pressure buffer cavity, the helix core rod outer end is provided with at least two air admission holes that communicate with the cavity of above-mentioned pressure buffer, helix core rod the inner also is provided with the same shaft hollow plug that communicates with the cavity of pressure buffer, and mouthful mould is between body and hollow plug.
2. high speed according to claim 1 is extruded large-caliber thin-walled plastic tube extrusion die, it is characterized in that at least two of charging aperture on the helix core rod and the charging runners between its helical flow path.
3. high speed according to claim 1 and 2 is extruded large-caliber thin-walled plastic tube extrusion die, it is characterized in that the charging runner is six, and air admission hole is six, and each air admission hole is between two charging runners.
4. high speed according to claim 3 is extruded large-caliber thin-walled plastic tube extrusion die, it is characterized in that the pressure buffer cavity on the helix core rod is cylindric, and helix core rod is connected with hollow plug ladder positioning threads.
5. high speed according to claim 4 is extruded large-caliber thin-walled plastic tube extrusion die, it is characterized in that a body and a mouthful mould end face location, and a mouthful mould is provided with pressing plate outward, a pressing plate and a mouthful mould flat seal.
6. high speed according to claim 5 is extruded large-caliber thin-walled plastic tube extrusion die, it is characterized in that body is provided with the adjustment screw that is used to regulate mouthful mould and hollow plug gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201158953U CN201249515Y (en) | 2008-06-16 | 2008-06-16 | Plastic pipe extrusion die with high-speed extrusion, large caliber and thin wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201158953U CN201249515Y (en) | 2008-06-16 | 2008-06-16 | Plastic pipe extrusion die with high-speed extrusion, large caliber and thin wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201249515Y true CN201249515Y (en) | 2009-06-03 |
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ID=40745187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201158953U Expired - Lifetime CN201249515Y (en) | 2008-06-16 | 2008-06-16 | Plastic pipe extrusion die with high-speed extrusion, large caliber and thin wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201249515Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601968A (en) * | 2012-03-09 | 2012-07-25 | 天津市盈德意利保温材料有限公司 | Production process of high-density polyethylene outer sheath tube and outer sheath tube mold |
| CN102601969A (en) * | 2012-03-14 | 2012-07-25 | 天津中财型材有限责任公司 | Mould and process for one-mould-double-output forming of polypropylene random copolymer pipes |
| CN102950749A (en) * | 2011-08-29 | 2013-03-06 | 爱康企业集团(上海)有限公司 | PP-R (polypropylene) pipe production equipment |
| CN109333968A (en) * | 2018-11-19 | 2019-02-15 | 江苏科技大学 | A kind of adjustable bore specification die head of plastic tube production |
| CN111716679A (en) * | 2019-03-20 | 2020-09-29 | 诺信公司 | Die assembly and granulation device with pressure regulating device |
| CN112384352A (en) * | 2018-07-03 | 2021-02-19 | 康宁股份有限公司 | Extrusion device with fixed profile |
-
2008
- 2008-06-16 CN CNU2008201158953U patent/CN201249515Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950749A (en) * | 2011-08-29 | 2013-03-06 | 爱康企业集团(上海)有限公司 | PP-R (polypropylene) pipe production equipment |
| CN102950749B (en) * | 2011-08-29 | 2014-12-10 | 爱康企业集团(上海)有限公司 | PP-R (polypropylene) pipe production equipment |
| CN102601968A (en) * | 2012-03-09 | 2012-07-25 | 天津市盈德意利保温材料有限公司 | Production process of high-density polyethylene outer sheath tube and outer sheath tube mold |
| CN102601968B (en) * | 2012-03-09 | 2014-06-11 | 天津市盈德意利保温材料有限公司 | Production process of high-density polyethylene outer sheath tube and outer sheath tube mold |
| CN102601969A (en) * | 2012-03-14 | 2012-07-25 | 天津中财型材有限责任公司 | Mould and process for one-mould-double-output forming of polypropylene random copolymer pipes |
| CN112384352A (en) * | 2018-07-03 | 2021-02-19 | 康宁股份有限公司 | Extrusion device with fixed profile |
| CN109333968A (en) * | 2018-11-19 | 2019-02-15 | 江苏科技大学 | A kind of adjustable bore specification die head of plastic tube production |
| CN109333968B (en) * | 2018-11-19 | 2020-06-09 | 江苏科技大学 | Plastic tubing production is with adjustable bore specification die head |
| CN111716679A (en) * | 2019-03-20 | 2020-09-29 | 诺信公司 | Die assembly and granulation device with pressure regulating device |
| US11858176B2 (en) | 2019-03-20 | 2024-01-02 | Nordson Corporation | Die assembly with pressure regulating device, and a pelletizing apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090603 |