CN1036922A - Dual anamorphism double undulation screw rod - Google Patents
Dual anamorphism double undulation screw rod Download PDFInfo
- Publication number
- CN1036922A CN1036922A CN 88101883 CN88101883A CN1036922A CN 1036922 A CN1036922 A CN 1036922A CN 88101883 CN88101883 CN 88101883 CN 88101883 A CN88101883 A CN 88101883A CN 1036922 A CN1036922 A CN 1036922A
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- CN
- China
- Prior art keywords
- screw rod
- screw
- double wave
- double
- root
- 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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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of screw rod with special melting effect, it improves on the basis of double wave shape screw rod.The wave amplitude and the spiral groove depth of double wave all gradually change, and can adapt to the Volume Changes of material in the extrusion better.Use this screw rod can realize that low temperature extrudes, and material dispersed is effective, can reach the effect of extruding of some twin-screw.
Description
The present invention is the improvement invention to the critical component-screw rod of plastic extruder in the plastic processing machinery or injection molding machine of plastic.
The present single screw extrusion machine that uses, from common screw to the divergence type screw rod, barrier screw, bypass type screw rod and wavy screw rod, the melting effect of its screw rod progressively improves.Particularly " double wave shape screw rod " effect of U.S. HPM Corp. design in recent years is better.It is on the basis of former wavy screw rod, is provided with an added thread again, and main thread is divided into former and later two parts.The ripple phase difference on added thread both sides is 180 °, and the height of added thread is lower than main thread (just bigger with the machine barrel gap).The melt that is in the crest place like this can be crossed the spiral shell back of the body and enter adjacent trough place, and material fusion homogenizing is got better.But above-mentioned double wave shape screw rod is inconsiderate to following two facts when design: the one, according to igneous theory; The fusion of material takes place gradually; Two, the volume of equiponderant solid material and melting charge is different.
In order to remedy 2 deficiencies of U.S.'s double wave shape screw rod, the present invention improves on the basis of double wave shape screw rod.Promptly the wave amplitude of (one) ripple, is increased by little (or 0) gradual change to the top from the screw rod root; (2) wavy section spiral groove depth is from root, from deep to shallow (be the average root footpath becomes gradually big).The double wave length of two gradual changes can run through whole screw rod, also can be any a section or two sections in three sections of the screw rods, and double wave wherein also can not established and pay a screw thread.
Improved double wave shape screw rod, owing to wave amplitude is that increase along with melt increases, the melt at crest place can be entered in the middle of the solid material of not fusion better, and can cross the spiral shell back of the body and enter in the adjacent screw channel, promote the heat exchange of solid, liquid between expecting mutually, quickened the fusion of solid material; Reduced melt temperature, improved the mixing uniformity of material, can keep again being subjected to bigger pressure in the melting process all the time, the solid material of having avoided mobile difference produces bigger resistance during by crest.Original double wave screw rod solid material can not be crossed the solid material in the additional adjacent screw channel of the spiral shell back of the body simultaneously, thereby influences the proal situation of materials flow.The improved screw rod of the present invention, in two gradual change double waves district, it is big that the average root footpath becomes gradually, and the Volume Changes in the time of adapting to the material fusion well also strengthens the suffered pressure of material gradually, has quickened the material fusion, has increased the packing of goods.
Embodiment: φ 45mm screw rod, L/D=1: 25 compression ratios: 2.14, the length of two gradual change two wavebands: 90=405mm, waveform adopt two screw threads to compile the hearts, and 0 wave amplitude is at screw rod root center hole place, and maximum amplitude is at screw head, eccentric throw ± 1.5.
Screw rod of the present invention, in extrusion, dispersive property is good, and energy resource consumption is few, can realize that low temperature extrudes. Need the good extruded product of dispersive property for resembling plastic matrix and so on, then the two gradual change new screws of this kind double wave shape can reach the effect of some double screw extruder.
Claims (4)
1, a kind of screw rod that plastic extruder or injection machine are used that is suitable for special melting effect.It is characterized in that: the double wave of two waveband gradually changes.
2, screw rod as claimed in claim 1 is characterized in that its wave amplitude increases gradually from little (or 0) from the root to the top.
3, screw rod as claimed in claim 1 is characterized in that wavy section spiral groove depth is descending, and promptly to begin from root be to become big gradually average root footpath.
4, screw rod as claimed in claim 1 is characterized in that the double wave of two gradual changes can run through whole screw rod, also can be any a section or two sections in three sections of the screw rods, and wherein double wave can not established and pay a screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88101883 CN1036922A (en) | 1988-04-12 | 1988-04-12 | Dual anamorphism double undulation screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88101883 CN1036922A (en) | 1988-04-12 | 1988-04-12 | Dual anamorphism double undulation screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1036922A true CN1036922A (en) | 1989-11-08 |
Family
ID=4831925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88101883 Pending CN1036922A (en) | 1988-04-12 | 1988-04-12 | Dual anamorphism double undulation screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036922A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102958666A (en) * | 2010-10-25 | 2013-03-06 | 三菱重工塑胶科技有限公司 | Plasticizing screw for injection molding and injection molding method using same |
-
1988
- 1988-04-12 CN CN 88101883 patent/CN1036922A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102958666A (en) * | 2010-10-25 | 2013-03-06 | 三菱重工塑胶科技有限公司 | Plasticizing screw for injection molding and injection molding method using same |
| US8900506B2 (en) | 2010-10-25 | 2014-12-02 | Mitsubishi Heavy Industries Plastic Technology | Plasticizing screw for injection molding and injection molding method using same |
| CN102958666B (en) * | 2010-10-25 | 2015-08-05 | 三菱重工塑胶科技有限公司 | Injection molded plasticized screw and employ the injection molding method of this screw rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |