CN108000836A - The melt conveying flow equilibrium compensation method of eccentric rotor extruder and stabilising arrangement - Google Patents
The melt conveying flow equilibrium compensation method of eccentric rotor extruder and stabilising arrangement Download PDFInfo
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- CN108000836A CN108000836A CN201711303788.3A CN201711303788A CN108000836A CN 108000836 A CN108000836 A CN 108000836A CN 201711303788 A CN201711303788 A CN 201711303788A CN 108000836 A CN108000836 A CN 108000836A
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- section
- eccentric rotor
- stator
- flow equilibrium
- bore
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The present invention discloses the compensation method of melt conveying flow equilibrium and the stabilising arrangement of a kind of eccentric rotor extruder, its method is by the way that eccentric rotor is divided into fusion plastification section and flow equilibrium section, the eccentricity of flow equilibrium section is more than the eccentricity of fusion plastification section, make by gap to be connected between the two chambers at flow equilibrium section, when the pressure of one of chamber becomes larger, partial melting material can flow to another chamber by gap under the effect of the pressure, be compensated so as to fulfill flow equilibrium.In its device, the eccentricity of flow balancing segment is more than the eccentricity of fusion plastification section on eccentric rotor；In fusion plastification section, the diameter of eccentric rotor be equal to the cutting back of bore of stator away from；In flow equilibrium section, the diameter of eccentric rotor be less than the cutting back of bore of stator away from.It is of the invention effectively to solve the problems, such as that the flowed fluctuation of eccentric rotor extruder and extrusion flow are unbalanced, realize that melt extrusion is stablized, be conducive to improve the surface uniformity and dimensional stability of product, improve quality of item.
Description
Technical field
The present invention relates to polymer material extrusion field shaping technique, more particularly to a kind of melt of eccentric rotor extruder
The balanced compensated method of feed flow and stabilising arrangement.
Background technology
The Chinese invention patent application of Application No. 201410206552.8 discloses a kind of eccentric rotor volume fluctuation shape
Become plasticizing transportation method and device, using a kind of new Polymer Processing new method and new theory so that high molecular material exists
Dominated in whole plasticizing process by volume fluctuation deformation.When the patent is reversely revolved round the sun using eccentric rotor rotation and constant speed
Rolling action in bore of stator, makes volume of material between eccentric rotor and stator along the axially and radially alternately all of stator
Phase property changes, and realizes that the volume fluctuation deformation plasticizing of material transports.Eccentric rotor equipment includes stator and is placed in bore of stator
Rotor；Rotor includes multiple rotor eccentricity spiral sections being arranged alternately and multiple rotor eccentricity straightways；Bore of stator includes
Multiple stator spiral sections being arranged alternately and multiple linear stator sections；Rotor eccentricity spiral section and rotor eccentricity straightway and stator
Spiral section and linear stator section correspond；Along the conveying direction of material, the spiral shell of each rotor eccentricity spiral section and stator spiral section
Away from being gradually reduced；The spiral section of bore of stator and the radial section of straightway are slot hole, and eccentric rotor is in bore of stator
Moved back and forth in slot hole, movement travel is twice of rotor maximum eccentricity.
Rolled when reversely being revolved round the sun with constant speed due to eccentric rotor rotation in bore of stator, between eccentric rotor and stator
Axially and radially alternately cyclically-varying of the spatial volume along stator, material between stator and rotor by periodic compression with
Volume fluctuation deformation effect is born during release, completes the plasticizing for including solid compaction, fusion plastification, mixed milling, melt conveying
Transport process.Therefore, above-mentioned eccentric rotor volume fluctuation deformation plasticizing feeding device has that the thermomechanical course of material is short, energy consumption
The features such as low, wide adaptability.
However, in practical applications, stator and bias in above-mentioned eccentric rotor volume fluctuation deformation plasticizing feeding device
Armature spindle is there are certain offset, and when eccentric rotor rotation is reversely revolved round the sun with constant speed, bore of stator is divided into two phases by rotor
The sinusoid cycle is presented in stator slot hole tee section because of its peculair motion mode in mutually independent space, eccentric rotor central speed
Change, the cyclically-varying of movement velocity cause pressure uneven so that eccentric rotor device is uneven there are liquid extruding flow
The problem of.Except polymer processing field, can also there is a situation where in other soft Mass transfer process same.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of melt conveying stream of eccentric rotor extruder
Balanced compensated method is measured, this method can effectively solve the problems, such as that eccentric rotor extruder extrudes flowed fluctuation, ensure melt extrusion
The balance of speed.
Another object of the present invention is to provide a kind of eccentric rotor for being used for realization above-mentioned flow equilibrium compensation method to squeeze
Go out the melt conveying stabilising arrangement of machine.
The technical scheme is that：A kind of melt conveying flow equilibrium compensation method of eccentric rotor extruder, passes through
Fusion plastification section and flow equilibrium section will be divided into positioned at the eccentric rotor of extruder end, the eccentricity of flow equilibrium section (flows
Measure the distance between eccentric rotor central axis and stator center axis at balancing segment) it is more than the eccentricity of fusion plastification section (i.e.
The distance between eccentric rotor central axis and stator center axis at fusion plastification section), make eccentric rotor at flow equilibrium section
It is connected between the two chambers formed in bore of stator by gap, in eccentric rotor rotation process, one of chamber
Pressure (form high pressure chest) when becoming larger, partial melting material can flow to another chamber by gap under the effect of the pressure
Room (i.e. low pressure chamber), compensates so as to fulfill the melt conveying flow equilibrium of extruder.In whole fused materials course of conveying, partially
Heart rotor around its own axis rotate while, also the axis around stator rolls in bore of stator, thus eccentric rotor with it is fixed
The two chambers volume formed between sub- inner cavity can also produce change on different radial sections.
In the fusion plastification section, the two chambers that eccentric rotor is formed in bore of stator are mutually independent chamber,
Fused materials advance in fusion plastification Duan Zhongcheng double parallels spiral form.
In the fusion plastification section, the movement velocity of eccentric rotor is in cyclically-varying so that fused materials are in two chambers
Pressure in room is also in fluctuating change, and the fluctuation tendency of fused materials differs half of sinusoidal cycles in two chambers.
The present invention is used for realization the melt conveying stabilising arrangement of the eccentric rotor extruder of above-mentioned flow equilibrium compensation method,
Including eccentric rotor and stator, eccentric rotor is arranged in bore of stator, and along the conveying direction of fused materials, eccentric rotor is equipped with
Sequentially connected fusion plastification section and flow equilibrium section, the eccentricity of flow equilibrium section are more than the eccentricity of fusion plastification section；It is molten
Melt in fluxing zone, the diameter of eccentric rotor be equal to the cutting back of bore of stator away from；In flow equilibrium section, the diameter of eccentric rotor is less than
The cutting back of bore of stator away from.
The radial section of the bore of stator is in elongated hole-shape, the long intercept along the long axis direction of slot hole for bore of stator,
Along the minor axis direction of slot hole for bore of stator cutting back away from.
In the flow equilibrium section, the melting that the gap width between eccentric rotor and slot hole side is equal to eccentric rotor is moulded
Change the diameter of section difference between section and flow equilibrium section.
In the eccentric rotor, the pitch of fusion plastification section is more than the pitch of flow equilibrium section.
(entire length of eccentric rotor is for the 1/5 of of length no more than eccentric rotor entire length of the flow equilibrium section
The sum of length of fusion plastification section and flow equilibrium section).
Two spiral helicine chambers are formed between the eccentric rotor and bore of stator；Two chambers in fusion plastification section
It is not communicated with, the two chambers in flow equilibrium section communicate.
The eccentric rotor engages connection with bore of stator, and movement travel of the eccentric rotor in bore of stator is as follows：It is molten
Melt in fluxing zone, movement travel of the eccentric rotor in bore of stator is twice of fusion plastification section eccentricity, rotor and stator
It is at a fully engaged；In flow equilibrium section, movement travel of the eccentric rotor in bore of stator is twice of flow equilibrium section eccentricity,
There are gap between rotor and stator.
Above-mentioned melt conveying stabilising arrangement is arranged on the end of eccentric rotor extruder, in use, its principle is：Fused materials
During by fusion plastification section, fused materials separate (to be formed in two independent screw channel chambers between eccentric rotor and bore of stator
Two chambers), fused materials are presented double parallel spiral form and advance.Since eccentric rotor movement velocity has mechanical periodicity,
Fused materials pressure oscillation in the screw channel chamber of two closings changes, and fluctuation tendency differs half of sinusoidal cycles.Fusant
Material is acted in fusion plastification section by positive-displacement conveying characteristic, and into after flow equilibrium section, its eccentricity is compared to plastifying fusion
Section is larger, and pitch is smaller, and eccentric rotor diameter of section diminishes, thus between eccentric rotor and stator side wall there are gap (i.e.
Gap between above-mentioned eccentric rotor and slot hole side), so two screw channel chambers different in flow equilibrium section pass through gap phase
Connect, thus when despite pressure fluctuations in runner, in the chamber of eccentric rotor both sides, the fused materials in high pressure chest can pass through
The gap is flowed in low pressure chamber, carries out elongational flow pressure balance compensation.After flow equilibrium section by some length, melting
Material is stably discharged from the outlet of extruder.
The present invention has the advantages that relative to the prior art：
The melt conveying flow equilibrium compensation method of this eccentric rotor extruder and stabilising arrangement pass through on eccentric rotor
Eccentricity different fusion plastification section and flow equilibrium section are set, effectively solve the flowed fluctuation of eccentric rotor extruder and extrudate flow
Unbalanced problem is measured, realizes that melt extrusion is stablized, is conducive to improve the surface uniformity and dimensional stability of product, improves system
Quality.
In the melt conveying stabilising arrangement of this eccentric rotor extruder, in the plasticizing transport process of whole fusion plastification section,
There is partial material extruding flowing in two chambers, be all stretched theomorphism in fluxing zone and melt zone, effectively improve mixed
Close effect.
The melting conveying stabilising arrangement of this eccentric rotor extruder is simple in structure, and enforcement difficulty is small, is conducive on a large scale
Promote and apply.
Brief description of the drawings
Fig. 1 is the structure diagram of the melting conveying stabilising arrangement of this eccentric rotor extruder.
Fig. 2 is the C partial enlarged views in Fig. 1.
Fig. 3 is that eccentric rotor moves the view of half period in bore of stator on Section A-A in Fig. 1.
Fig. 4 is that eccentric rotor moves the view of half period in bore of stator on section B-B in Fig. 1.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.
Embodiment
A kind of melt conveying stabilising arrangement of eccentric rotor extruder of the present embodiment, as shown in Figure 1 or 2, mainly by inclined
Heart rotor 1 and stator 2 form, and while eccentric rotor is done rotation movement, also the axis around stator carries out instead in bore of stator
To revolution motion, stator is intermeshed with eccentric rotor, i.e.,：Either in fusion plastification section or flow equilibrium section, in bias
On any radial section of rotor, eccentric rotor is all that the barrel wall for being close to bore of stator is moved.
As shown in Figure 1, eccentric rotor end includes fusion plastification section a and flow equilibrium compensator section b.Material is moulded by melting
When changing section, the diameter of eccentric rotor is equal away from L (as shown in Figure 3) with the cutting back in the elongated hole-shape section of stator, and material is separated
Two independent chambers (first chamber G1, second chamber G2 i.e. shown in Fig. 3), since week is presented in eccentric rotor movement velocity
Phase changes, and material pressure in the two chambers closed also produces fluctuating change, and fluctuation tendency differs half of sinusoidal week
Phase.Flow equilibrium section sectional view as shown in figure 4, material enter flow equilibrium section after, its eccentric distance e 2 is compared to fusion plastification section
Eccentric distance e 1 it is larger, and pitch is smaller, eccentric rotor diameter of section be less than the cutting back of slot hole away from, because eccentric rotor and stator it
Between there are gap, so pressure is connected between different two chambers (i.e. first chamber G1, second chamber G2) by gap.
Thus when despite pressure fluctuations in runner, the partial melting material in high pressure chest (being second chamber G2 in the present embodiment) passes through
The gap is flowed in low pressure chamber (being second chamber G1 in the present embodiment), carries out elongational flow pressure balance compensation, so that real
The balance of existing pressure.
In the present embodiment, eccentric rotor and the side gap width in stator slot hole section are put down equal to fusion plastification section with flow
Twice of the eccentricity difference for the section that weighs, equal to fusion plastification section and the difference in diameter of flow equilibrium section.First is connected by gap
After chamber G1, second chamber G2, both pressure is kept identical, realize melt extrusion stability of flow, extruded product quality carries
It is high.
As described above, the present invention can be better realized, above-described embodiment is only presently preferred embodiments of the present invention, is not used
To limit the practical range of the present invention；I.e. all equivalent changes and modifications made according to present invention, all will for right of the present invention
Scope claimed is asked to be covered.
Claims (10)
1. the melt conveying flow equilibrium compensation method of eccentric rotor extruder, it is characterised in that by the way that extruder end will be located at
The eccentric rotor at end is divided into fusion plastification section and flow equilibrium section, and the eccentricity of flow equilibrium section is more than the bias of fusion plastification section
Away from, make by gap to be connected between the two chambers that eccentric rotor is formed in bore of stator at flow equilibrium section, bias turn
In sub- rotation process, when the pressure of one of chamber becomes larger, partial melting material can pass through a clearance flow under the effect of the pressure
Move to another chamber, compensated so as to fulfill the melt conveying flow equilibrium of extruder.
2. the melt conveying flow equilibrium compensation method of eccentric rotor extruder according to claim 1, it is characterised in that
In the fusion plastification section, two chambers that eccentric rotor is formed in bore of stator are mutually independent chamber, fused materials
Advance in fusion plastification Duan Zhongcheng double parallels spiral form.
3. the melt conveying flow equilibrium compensation method of eccentric rotor extruder according to claim 2, it is characterised in that
In the fusion plastification section, the movement velocity of eccentric rotor is in cyclically-varying so that pressure of the fused materials in two chambers
Power is also in fluctuating change, and the fluctuation tendency of fused materials differs half of sinusoidal cycles in two chambers.
4. the melt conveying stabilising arrangement of eccentric rotor extruder, it is characterised in that including eccentric rotor and stator, eccentric rotor
In bore of stator, along the conveying direction of fused materials, eccentric rotor is equipped with sequentially connected fusion plastification section and flow
Balancing segment, the eccentricity of flow equilibrium section are more than the eccentricity of fusion plastification section；In fusion plastification section, diameter of eccentric rotor etc.
In bore of stator cutting back away from；In flow equilibrium section, the diameter of eccentric rotor be less than the cutting back of bore of stator away from.
5. the melt conveying stabilising arrangement of eccentric rotor extruder according to claim 4, it is characterised in that the stator
The radial section of inner cavity is in elongated hole-shape, along the long intercept that the long axis direction of slot hole is bore of stator, along the minor axis side of slot hole
To the cutting back for bore of stator away from.
6. the melt conveying stabilising arrangement of eccentric rotor extruder according to claim 5, it is characterised in that the flow
In balancing segment, the gap width between eccentric rotor and slot hole side is equal to the fusion plastification section and flow equilibrium section of eccentric rotor
Between diameter of section difference.
7. the melt conveying stabilising arrangement of eccentric rotor extruder according to claim 4, it is characterised in that the bias
In rotor, the pitch of fusion plastification section is more than the pitch of flow equilibrium section.
8. the melt conveying stabilising arrangement of eccentric rotor extruder according to claim 4, it is characterised in that the flow
The 1/5 of of length no more than eccentric rotor entire length of balancing segment.
9. the melt conveying stabilising arrangement of eccentric rotor extruder according to claim 4, it is characterised in that the bias
Two spiral helicine chambers are formed between rotor and bore of stator；Two chambers in fusion plastification section are not communicated with, flow equilibrium
Two chambers in section communicate.
10. the melt conveying stabilising arrangement of eccentric rotor extruder according to claim 4, it is characterised in that described inclined
Heart rotor engages connection with bore of stator；In fusion plastification section, movement travel of the eccentric rotor in bore of stator is moulded for melting
Change section eccentricity twice；In flow equilibrium section, movement travel of the eccentric rotor in bore of stator is eccentric for flow equilibrium section
Away from twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711303788.3A CN108000836B (en) | 2017-12-11 | 2017-12-11 | Melt conveying flow balance compensation method and stabilizing device of eccentric rotor extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711303788.3A CN108000836B (en) | 2017-12-11 | 2017-12-11 | Melt conveying flow balance compensation method and stabilizing device of eccentric rotor extruder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108000836A true CN108000836A (en) | 2018-05-08 |
| CN108000836B CN108000836B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711303788.3A Active CN108000836B (en) | 2017-12-11 | 2017-12-11 | Melt conveying flow balance compensation method and stabilizing device of eccentric rotor extruder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1433443A (en) * | 1974-02-21 | 1976-04-28 | Ikegai Iron Works Ltd | Kneading plastic material |
| US4519712A (en) * | 1984-09-06 | 1985-05-28 | Barr Robert A | Positive displacement pump assembly |
| US6203740B1 (en) * | 1996-04-29 | 2001-03-20 | Nextrom Holdings S.A. | Extrusion method, extruder and extruded product |
| CN2548790Y (en) * | 2002-06-24 | 2003-05-07 | 岑益南 | Planet monoscrewrod plastic extruder |
| CN1791750A (en) * | 2003-03-12 | 2006-06-21 | 彼得·勒斯纳 | Eccentric screw pump |
| CN104002447A (en) * | 2014-05-15 | 2014-08-27 | 华南理工大学 | Eccentric rotor volume pulsation deformation plasticizing transport method and device |
| CN105121853A (en) * | 2013-03-07 | 2015-12-02 | 威乐欧洲股份公司 | Eccentric screw pump with overpressure protection |
| CN106273339A (en) * | 2016-09-23 | 2017-01-04 | 华南理工大学 | The solid non-close conveying of a kind of eccentric rotor extruder and compacting method for exhausting |
| CN205929389U (en) * | 2016-08-15 | 2017-02-08 | 昆山力兆塑胶有限公司 | Spiral propelling movement formula polymer material extrusion machine |
| CN206406427U (en) * | 2016-12-29 | 2017-08-15 | 东莞市海塑实业有限公司 | A kind of blade extruder |
| CN207825416U (en) * | 2017-12-11 | 2018-09-07 | 华南理工大学 | The melt conveying stabilising arrangement of eccentric rotor extruder |
-
2017
- 2017-12-11 CN CN201711303788.3A patent/CN108000836B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1433443A (en) * | 1974-02-21 | 1976-04-28 | Ikegai Iron Works Ltd | Kneading plastic material |
| US4519712A (en) * | 1984-09-06 | 1985-05-28 | Barr Robert A | Positive displacement pump assembly |
| US6203740B1 (en) * | 1996-04-29 | 2001-03-20 | Nextrom Holdings S.A. | Extrusion method, extruder and extruded product |
| CN2548790Y (en) * | 2002-06-24 | 2003-05-07 | 岑益南 | Planet monoscrewrod plastic extruder |
| CN1791750A (en) * | 2003-03-12 | 2006-06-21 | 彼得·勒斯纳 | Eccentric screw pump |
| CN105121853A (en) * | 2013-03-07 | 2015-12-02 | 威乐欧洲股份公司 | Eccentric screw pump with overpressure protection |
| CN104002447A (en) * | 2014-05-15 | 2014-08-27 | 华南理工大学 | Eccentric rotor volume pulsation deformation plasticizing transport method and device |
| CN205929389U (en) * | 2016-08-15 | 2017-02-08 | 昆山力兆塑胶有限公司 | Spiral propelling movement formula polymer material extrusion machine |
| CN106273339A (en) * | 2016-09-23 | 2017-01-04 | 华南理工大学 | The solid non-close conveying of a kind of eccentric rotor extruder and compacting method for exhausting |
| CN206406427U (en) * | 2016-12-29 | 2017-08-15 | 东莞市海塑实业有限公司 | A kind of blade extruder |
| CN207825416U (en) * | 2017-12-11 | 2018-09-07 | 华南理工大学 | The melt conveying stabilising arrangement of eccentric rotor extruder |
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| CN108000836B (en) | 2023-08-29 |
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