CN101332667A - Long glass fiber-reinforced plastics pipe extruder head - Google Patents
Long glass fiber-reinforced plastics pipe extruder head Download PDFInfo
- Publication number
- CN101332667A CN101332667A CNA2007103048252A CN200710304825A CN101332667A CN 101332667 A CN101332667 A CN 101332667A CN A2007103048252 A CNA2007103048252 A CN A2007103048252A CN 200710304825 A CN200710304825 A CN 200710304825A CN 101332667 A CN101332667 A CN 101332667A
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- CN
- China
- Prior art keywords
- extruder head
- plastic
- core rod
- reinforced plastics
- glass fiber
- Prior art date
- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
Abstract
The invention relates to a plastic round pipe extruder head which is arranged on a plastic extruder and provided with a long fibreglass online spiral composite characteristic. The extruder head is provided with an input of the fibreglass and a mixed distribution device and a core rod rotation device of fibre and fused mass; the mixed distribution device of the extruder head realizes the object that the fibreglass with a certain length disposed by coupling agent is input to the plasticized plastic fused mass, uniformly mixed into the plastic fused mass and becomes the fibre-plastic mixed fused mass; the core rod rotation device of the extruder head realizes the object that the rotation of the core rod changes the flowing of the fused mass from the core rod and a die along the axis line of the core rod into the flowing thereof along the spiral direction of the core rod till cooling and solidification. The polymer molecular and long fibreglass in the plastic pipe extruded by the extruder has a direction in the spiral direction of the axis line, thus greatly enhancing the circumferential strength of the pipes and expanding the usage application of the pipes.
Description
Technical field
The present invention is the extruder head on the plastic extruding forming machine of being installed in that designs for the mechanical property that improves the plastics circular pipe, belongs to the invention design of plastic molding equipment critical component.
Background technology
The plastics circular pipe is a kind of widely used engineering material, uses in a large number in engineerings such as building, water conservancy, chemical industry, environment.But, plastics (PVC, PE, PP) tubing commonly used is owing to extrusion equipment and expressing technique reason, the mechanical property that forms the tubing of selling on the market can not satisfy the needs of engineering, its main feature is exactly that the circumferential stretching resistance of tubing is more weak, can not bear inner big pressure, can not be applied on high rise building water supply and high pressure infuser, the gas pipeline.Its reason has two, one, reasons in structure, and according to stress analysis content in the mechanics textbooks, the thin-walled pressure vessel of image tube material class, under interior pressure effect, its circumferential stress is 2 times of axial stress, promptly circumferential strength is 1/2 of an axial strength; The 2nd, technological reason, be installed in the extruder head on the plastic extruding forming machine now, no matter be through type or right-angle type, all be directly to rely on the pressure differential of extruder head inlet/outlet the melt extruder head, melt is along the axial straight line shear flow of tubing in head, up to cooling and shaping, causing plastic molecules all is along the tubing axial orientation basically.Thereby the tubing wall just become because of the also different anisotropic material of molecular orientation direction difference mechanical property, according to " data such as mould of plastics handbook as can be known, plastic plate is perpendicular to 2 to 3 times of molecularly oriented intensity along the intensity of molecularly oriented.Like this, the mechanical property of calculating the tubing that uses now theoretically only is 1/4～1/6 of a material property, causes mechanical properties of tubular goods low on the one hand, causes the waste of material resources on the other hand again.For head it off scholar and brainstrust have been researched and developed al-plastics composite pipe, spiral twines or braided steel wire enhanced composite plastic pipe material (Gan Guogong, the patent No. 200410081433.0), self-reinforced plastic pipe (Shen Kaizhi, the patent No. 97107852.1), or the like.
Summary of the invention
Main contents of the present invention are: design a kind of new type plastic pipe extruder head, be called long glass fiber-reinforced plastics pipe extruder head.It is characterized in that, be installed on the various general-purpose plastics extruders, use common polymeric aggregate, on-line mixing is gone into glass fibre (10～20mm that certain-length was handled through being coupled agent behind the polymer plastifying fusion, claim long glass fiber), and glass is evenly mixed with polymer melt, make blend melt around tubing plug axis helical flow then, polymer plasticizing molecular melt and glass fibre are along the tube wall screw orientation and the cooling of extruding circular pipe, produce the higher tubing of intensity, satisfy need of real project.
Long glass fiber-reinforced plastics pipe extruder head mainly is made up of two parts, and the input of long glass fibres reaches mixed distribution device and the plug tumbler with plastic melt.
The input of long glass fiber and with the mixing arrangement of plastic melt by steel mix cylinder (2) be installed in adjustable speed motor (4) on the cylindrical shell and reach the mixing screw (6) that in cylindrical shell, matches etc. and form with cylindrical shell.Wherein, plastic melt inlet (1) has screw thread to link to each other with extruder for cylindrical shell middle part transverse pipe (vertical paper); Long glass fiber and be coupled agent input port (3) and be fixed on the mix cylinder (2) by screw.
Consisting of of plug tumbler, cottered joint driving bevel gear (5) on adjustable speed motor (4) axle, cylinder body outer wall stationary core rod rotation drive support (9), coaxial installation driven pulley bevel gear (7) and plug rotational speed regulation sprocket wheel (8) on it drive driven transmission sprocket wheel and rotatable plug (11) by plug rotating drivetrain bar (10).
Description of drawings
The structure diagram of long glass fiber-reinforced plastics round plastic pipe extruder head of the present invention as shown in the figure.Wherein, 1, plastic melt inlet (vertical paper); 2, mixing drum; 3, glass fibre and be coupled agent input port, 4, buncher; 5, driving wheel; 6, mixing screw; 7, driven pulley; 8, plug rotational speed regulation sprocket wheel; 9, plug rotating drivetrain wheel support; 10, plug rotating drivetrain bar; 11, rotatable plug and driven transmission sprocket wheel; 12, tubing outer mold walls.
The specific embodiment
The specific embodiment of long glass fiber-reinforced plastics pipe extruder head of the present invention is, the plastic melt of being extruded by plastic extruder enters the mixing drum (2) of head by filter screen (1), simultaneously under the drive of motor (4), non-twist long glass fiber of the alkali-free that has been cut into and coupling molecule enter mixing drum by input port (3), finish mixing and conveying by the inner face relative motion of screw rod (6) and mix cylinder (2) to long glass fiber and melt, glass is soaked into by plastic melt and is distributed among the plastic melt, forms fibre and moulds blend melt.Fibre is moulded after blend melt enters forming cavity between rotation plug (11) and tubing outer mold walls (12).Surperficial under the effect of axis quick rotation along mandrel axis linear flow dynamic pressure and rotation plug (11), the flow direction that fibre is moulded melt by along mandrel axis to changing into around the plug screw, and between outer mold walls (12) and plug (11), be shaped to the circular pipe shape, through supercooling, obtain plastic molecules and glass fibre high strength linepipe at last along the tube wall screw orientation.
The present invention in laboratory implementation model test, distribution and the orientation of glass in melt all reached purpose of design.
Claims (3)
1, a kind of long glass fiber-reinforced plastics pipe extruder head, be installed on the various general-purpose plastics extruders, can extrude the reinforced plastics tubing of glass fibre, it is characterized in that: the mixed distribution device of the input of glass fibre and fiber and melt, plug tumbler around the axial screw orientation.
2, long glass fiber-reinforced plastics pipe extruder head as claimed in claim 1, it is characterized in that: the input of its glass fibre and fiber reach the screw rod that matches with cylindrical shell with the mixed distribution device of melt by the variable speed electric motors, particularly on steel cylinders and the fixed cylinder and form in cylindrical shell, wherein, it is glass fibre and be coupled the agent input magazine and be connected that the cylindrical shell epimere laterally has a hole, and the cylindrical shell middle part has the plastic melt inlet to link to each other with extruder with screw thread; The upper shaft of screw rod links to each other with the variable speed electric motors, particularly axle, on the axle and to fix a bevel type gear be driving wheel; Stationary core rod rotation drive support on the barrel, fixing driven umbellate form driving wheel of the coaxial pin of this support and plug rotational speed regulation sprocket wheel.
3, long glass fiber-reinforced plastics pipe extruder head as claimed in claim 1 is characterized in that: the plug of its plug tumbler is a variable cross-section steel circular shaft, and inner segment is the tubing sizing section, and outer section is connected with driven sprocket by pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103048252A CN101332667A (en) | 2007-12-29 | 2007-12-29 | Long glass fiber-reinforced plastics pipe extruder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103048252A CN101332667A (en) | 2007-12-29 | 2007-12-29 | Long glass fiber-reinforced plastics pipe extruder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101332667A true CN101332667A (en) | 2008-12-31 |
Family
ID=40195666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007103048252A Pending CN101332667A (en) | 2007-12-29 | 2007-12-29 | Long glass fiber-reinforced plastics pipe extruder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101332667A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101174A (en) * | 2013-02-01 | 2013-05-15 | 浙江曼瑞德舒适系统有限公司 | Plastic pipe coating machine head and plastic pipe coating device including same |
| CN108608760A (en) * | 2018-06-05 | 2018-10-02 | 安徽得亿文教用品有限公司 | A kind of batch mixing extrusion device for plastic pencil production |
| CN115257013A (en) * | 2022-06-13 | 2022-11-01 | 安徽铸脊新材料科技有限公司 | Continuous forming device and forming method for fiber reinforced thermoplastic pipe |
-
2007
- 2007-12-29 CN CNA2007103048252A patent/CN101332667A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101174A (en) * | 2013-02-01 | 2013-05-15 | 浙江曼瑞德舒适系统有限公司 | Plastic pipe coating machine head and plastic pipe coating device including same |
| US9481006B2 (en) | 2013-02-01 | 2016-11-01 | Zhejiang Menred Comfort System Co., Ltd. | Plastic tubular product coating machine head and a plastic tubular product coating apparatus comprising the same |
| CN108608760A (en) * | 2018-06-05 | 2018-10-02 | 安徽得亿文教用品有限公司 | A kind of batch mixing extrusion device for plastic pencil production |
| CN115257013A (en) * | 2022-06-13 | 2022-11-01 | 安徽铸脊新材料科技有限公司 | Continuous forming device and forming method for fiber reinforced thermoplastic pipe |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081231 |