CN1074350C - Planetary dynamic rolling support combined screw for plastic extruder - Google Patents
Planetary dynamic rolling support combined screw for plastic extruder Download PDFInfo
- Publication number
- CN1074350C CN1074350C CN99114119A CN99114119A CN1074350C CN 1074350 C CN1074350 C CN 1074350C CN 99114119 A CN99114119 A CN 99114119A CN 99114119 A CN99114119 A CN 99114119A CN 1074350 C CN1074350 C CN 1074350C
- Authority
- CN
- China
- Prior art keywords
- screw
- axle
- eccentric wheel
- threaded rod
- dynamic
- 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.)
- Expired - Fee Related
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 20
- 229920003023 plastic Polymers 0.000 title claims description 8
- 239000004033 plastic Substances 0.000 title claims description 8
- 238000004898 kneading Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000007790 scraping Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A combined extruder screw is composed of multiple planetary dynamic rolling bearings. The contact between the screws and the cylinder is a kind of rolling friction, and the combined elements of each screw are composed of more than two groups of elements which are kneading elements and dynamic planetary rolling bearings. Each set of dynamic planet rolling bearing is composed of more than three eccentric wheels 3. The included angles between the eccentric wheels 3 are equal, the angles are increased in an equal order, and the eccentric wheels are close to each other in the axial direction. The device can thoroughly eliminate the scraping and clamping of the screw on the machine barrel caused by the rolling effect, and the rotating speed of the counter-rotating twin-screw is increased by 6 times.
Description
The invention belongs to the plastic processing machinery field, especially for the combined threaded rod category in single screw rod, parallel dual-screw, incongruous double screw and the multi-screw extruder.
Current state: in the prior art, assembled screw rod is used for parallel dual-screw more, and the screw rod of incongruous double screw and tapering double screw extruder then is whole screw rod.Be on whole spiro rod length, to contact between the wall within above-mentioned screw rod and the sleeve wall 5, especially in counter rotation twin screw extruder, because the existence of rolling effect makes its rotating speed be only limited to 8～50 rev/mins.China Light Industry Press publishes approximately " the teaching material one plastics machinery design on probation of institution of higher education's light industry specialty " (Beijing Chemical Engineering College April nineteen eighty-three, Huanan (South China) Polytechnic College compiles in collaboration with) the work literary composition is emphasized in the 183rd page of the book: " ... extruded material in the gap; produce the counter-pressure that screw rod is separated; force the screw rod distortion; distortion place will be quickened the wearing and tearing of screw rod and machine barrel; along with the increase of screw speed, rolling effect also increases, wearing and tearing have been quickened, excessive deformation causes the swipe of screw rod, and therefore inwardly the twin-screw of reverse rotation can only be worked under lower rotating speed ... ".
The objective of the invention is: for a kind of combined threaded rod with the supporting of many group dynamic rollings is provided, it can thoroughly eliminate the swipe to machine barrel of screw rod that above-mentioned rolling effect brings, and take this rotating speed of incongruous double screw is risen to similar promptly about 300 rev/mins of parallel dual-screw rotating speed by present 8～50 rev/mins, and can prolong the wear-out life of screw rod and machine barrel.
Technical scheme of the present invention is: a kind of combined plastic extruder screw is to be Connection Element with axle 4, with common combined threaded rod element: delivery element, compressing member, hybrid element, kneading member are combined, and constitute manufacturability combined threaded rod very flexibly.It can apply to single screw rod, co-rotating twin screw, Heterodromy double-screw and multi-screw extruder, is used in particular for counter rotation twin screw extruder, can eliminate the screw rod of rolling effect generation the card of machine barrel is scraped.It is characterized by: every screw rod by more than two groups be kneading member be again that the multi-pivot and long axle is formed in the dynamic planet supporting of dynamic planet rolling supporting.The center O of axle 4 is the dead axle center of major axis, and every group of dynamic planet supporting is made up of three above eccentric wheels 3, and the center angle between the eccentric wheel 3 is equal, and its angle rank such as is and increases progressively, and it is axially drawn close mutually.The endoporus of eccentric wheel 3 connects with axle 4 mutually with spline, the offset of each eccentric wheel 3 (center, the outer ring a of eccentric wheel 3
1, a
2, a
3The distance of ordering to O) equate, and a
1, a
2, a
3Between the center angle equate.The cylindrical of eccentric wheel 3 is provided with axle sleeve 2, for the screw rod of big specification, is provided with one and encloses needle roller 1 between the cylindrical of the inner ring of axle sleeve 2 and eccentric wheel 3.The dead axle O of each eccentric wheel 3 is to its moving axis center a
1, a
2, a
3Extended line edge to the axle sleeve 2, the point of contact A that forms with machine barrel 5 inner rings
1, A
2, A
3Be the dynamic fulcrum of this group dynamic support at machine barrel 5 inwalls.
Principle and advantage of the present invention is: every screw rod is only at the dynamic A of planet supporting member
1, A
2, A
3Screw rod just contacts with the rolling form with machine barrel on the point, it can apply to single screw rod, co-rotating twin screw, Heterodromy double-screw and multi-screw extruder, be used in particular for counter rotation twin screw extruder, can eliminate the screw rod of rolling effect generation scrapes the card of machine barrel, and all the other screw elements (are carried, compression, mix) radially have enough gaps, be contactless state between they and the barrel wall, and dynamically the planet supporting member itself is a kind of novel kneading member, and its eccentric axle sleeve external diameter and cavity between the machine barrel that forms dorsad is to supply the axially movable space of material.
The present invention can also be used for single screw rod, parallel dual-screw, incongruous double screw and multi-screw extruder.
Describe enforcement preferred plan of the present invention in detail below in conjunction with accompanying drawing:
Fig. 1 is larger-diameter planetary rolling supporting combined threaded rod sectional drawing;
Fig. 2 is the planetary rolling supporting combined threaded rod sectional drawing than minor diameter.
Describe the present invention's structure in conjunction with the accompanying drawings in detail:
Among the figure: the 1-needle roller; The 2-axle sleeve; The 3-eccentric wheel; The 4-axle; The 5-machine barrel;
The center of O-axle 4.
The best approach of implementing the present invention is: every screw rod is provided with 3 above dynamic rolling supporting members, be separately positioned on the initial and end and the middle part of screw rod, every group axial length is (D-screw diameter) about 1D, every eccentric wheel thickness can be set to 0.25-0.33D, and the material of eccentric wheel 3, axle sleeve 2, needle roller 1 can adopt rolling bearing steel GCr15.
Claims (3)
1, a kind of combined threaded rod of plastic extruder is to be composition element with axle (4), it is characterized by: every screw rod by more than two groups be kneading member be again that the multi-pivot and long axle is formed in the dynamic planet supporting of dynamic planet rolling supporting, the center (O) of axle (4) is the dead axle center of major axis, every group of dynamic planet supporting is made up of three above eccentric wheels (3), the endoporus of eccentric wheel (3) connects with axle (4) mutually with spline, the offset of each eccentric wheel (3) equates, eccentric wheel (3) cylindrical center (a
1) (a
2) (a
3) ... between the center angle equate, and its angle rank such as is and increases progressively, it is axially drawn close mutually, the cylindrical of eccentric wheel (3) is provided with axle sleeve (2), or a circle needle roller (1) is set between the cylindrical of the inner ring of axle sleeve (2) and eccentric wheel (3), the dead axle (O) of each eccentric wheel (3) is to its moving axis center (a
1) (a
2) (a
3) ... extended line edge to the axle sleeve (2), the point of contact (A that forms with machine barrel (5) inner ring
1) (A
2) (A
3) be that this organizes the dynamic fulcrum that dynamic planet is bearing in machine barrel (5) inwall.
2, according to the combined threaded rod of claims 1 described plastic extruder, it is characterized in that: above-mentioned feature also contains common combined threaded rod element: the combined threaded rod of delivery element, compressing member, hybrid element and kneading member.
3, according to the combined threaded rod of claim 1,2 described plastic extruders, it is characterized in that: above-mentioned feature also contains combined threaded rod in single screw rod, parallel dual-screw, incongruous double screw and the multi-screw extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114119A CN1074350C (en) | 1998-07-20 | 1999-03-24 | Planetary dynamic rolling support combined screw for plastic extruder |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98111417.2 | 1998-07-20 | ||
| CN98111417A CN1242287A (en) | 1998-07-20 | 1998-07-20 | Planetary dynamic rolling support combined screw for plastic extruder |
| CN99114119A CN1074350C (en) | 1998-07-20 | 1999-03-24 | Planetary dynamic rolling support combined screw for plastic extruder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1242288A CN1242288A (en) | 2000-01-26 |
| CN1074350C true CN1074350C (en) | 2001-11-07 |
Family
ID=25744683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99114119A Expired - Fee Related CN1074350C (en) | 1998-07-20 | 1999-03-24 | Planetary dynamic rolling support combined screw for plastic extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074350C (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2150034Y (en) * | 1992-12-23 | 1993-12-22 | 益阳橡胶机械厂 | Two-screw roller-type machine-head extruding machine |
| CN1100028A (en) * | 1993-04-15 | 1995-03-15 | 埃姆斯·英芬塔股份有限公司 | Planetary gear for a multiple-screw extruder |
| CN1105315A (en) * | 1993-09-02 | 1995-07-19 | 维尔内和普弗雷德尔公司 | Screw element for a screw-type extrusion machine |
| RU2069149C1 (en) * | 1994-01-06 | 1996-11-20 | Волгоградский государственный технический университет | Worm extruder for processing polymeric materials |
| WO1997040658A2 (en) * | 1996-04-29 | 1997-11-06 | Conenor Oy | Extrusion method, extruder and extruded product |
| DE19626554A1 (en) * | 1996-07-02 | 1998-01-08 | Wagner Andreas | Synchronous independent drive for use in multi-shaft screw extruders |
-
1999
- 1999-03-24 CN CN99114119A patent/CN1074350C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2150034Y (en) * | 1992-12-23 | 1993-12-22 | 益阳橡胶机械厂 | Two-screw roller-type machine-head extruding machine |
| CN1100028A (en) * | 1993-04-15 | 1995-03-15 | 埃姆斯·英芬塔股份有限公司 | Planetary gear for a multiple-screw extruder |
| CN1105315A (en) * | 1993-09-02 | 1995-07-19 | 维尔内和普弗雷德尔公司 | Screw element for a screw-type extrusion machine |
| RU2069149C1 (en) * | 1994-01-06 | 1996-11-20 | Волгоградский государственный технический университет | Worm extruder for processing polymeric materials |
| WO1997040658A2 (en) * | 1996-04-29 | 1997-11-06 | Conenor Oy | Extrusion method, extruder and extruded product |
| DE19626554A1 (en) * | 1996-07-02 | 1998-01-08 | Wagner Andreas | Synchronous independent drive for use in multi-shaft screw extruders |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1242288A (en) | 2000-01-26 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |