CN202318878U - Screw rod assembly of double-screw extruder - Google Patents
Screw rod assembly of double-screw extruder Download PDFInfo
- Publication number
- CN202318878U CN202318878U CN2011204441503U CN201120444150U CN202318878U CN 202318878 U CN202318878 U CN 202318878U CN 2011204441503 U CN2011204441503 U CN 2011204441503U CN 201120444150 U CN201120444150 U CN 201120444150U CN 202318878 U CN202318878 U CN 202318878U
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- different
- delivery element
- screw extruder
- arbor assembly
- screw rod
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- 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.)
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/54—Screws with additional forward-feeding elements
Abstract
The utility model relates to a screw rod assembly of a double-screw extruder. The screw rod assembly comprises a screw rod, a plurality of conveying elements and a plurality of shearing elements, wherein the conveying elements and the shearing elements are distributed on a melting and plasticizing section and a shearing section of the screw rod in a staggering way; the conveying elements are also distributed on a feeding section, a side feeding section, an air exhaust section and an extrusion section of the screw rod; preferably, at least part of the conveying elements have different conveying directions, different leads and/or different conveying angles; and at least part of the shearing elements have different conveying directions, different leads, different quantities of kneading discs and/or different kneading angles. The screw rod assembly of the double-screw extruder is ingenious in design, simple in structure, economic and effective, is suitable for production of modified plastics with higher filler content and large-scale popularization and application, and is favorable for guaranteeing the quality and yield of products.
Description
Technical field
The utility model relates to the extruder technology field, and particularly extruder screw assembly machine technology field specifically is meant a kind of double screw extruder screw arbor assembly, is particularly useful for the high modified plastics production of filling, preventing flash.
Background technology
As everyone knows, synthetic resin is the pure high molecular polymer that process direct polymerization of hydro carbons industrial chemicals and the certain purified treatment of process form, and its performance has certain limitation.And in the process that reality is used as material, need fill it, enhancing, modification such as fire-retardant, heat-resisting; Must add the different plastics auxiliary agent; Make modified particle possess higher mechanical property, heat resistance, ageing-resistant performance or fire resistance; Then in certain processing conditions molded moulding, just can be used to prepare the production of the plastic material in fields such as automotive field, household electrical appliances, equipment.This synthetic plastic is processed the used process equipment of modified engineered plastic particle and is generally double screw extruder, is mainly engagement type double screw extruder in the same way.
But the problem that equipment attrition is serious and vacuum rises and expects can take place in the high filling of modified plastics melt finger and to(for) height usually when the parallel dual-screw extruding machine extruding pelletization.Because the high filler loading capacity of filler is very serious to the wearing and tearing of screw rod and barrel, causes frequent parking, cause the apparatus maintenance cost to rise.And the vacuum that often occurs rises and expects to cause the quality of product unstable, and has had a strong impact on output.Therefore necessary the existing double screw extruder of engagement type in the same way equipment is transformed, being applicable to the production of the modified plastics that filler content is higher, and the screw arbor assembly of adjustment twin-screw is effective, the most most economical method.
In sum, be necessary to work out screw arbor assembly suitable in the double screw extruder equipment, economical and effective is applicable to the production of the modified plastics that filler content is higher, guarantees the quality and the output of product.
The utility model content
The purpose of the utility model is to have overcome above-mentioned shortcoming of the prior art; A kind of double screw extruder screw arbor assembly is provided, and this double screw extruder screw arbor assembly design is ingenious, simple for structure; Economical and effective; Be applicable to the production of the modified plastics that filler content is higher, guarantee the quality and the output of product, be suitable for large-scale promotion application.
To achieve these goals; The double screw extruder screw arbor assembly of the utility model; Comprise screw rod, be characterized in that said double screw extruder screw arbor assembly also comprises some delivery elements and some shearing elements; Said delivery element and said shearing elements are interspersed in the fusion plastification section and shearing section of said screw rod, and said delivery element also is distributed in feeding section, the side of said screw rod and feeds section, exhaust section and extruding zone.
So-called " being interspersed " refers to one or several delivery element and alternately arranges successively with one or several shearing elements, such as, 3 delivery element+1 shearing elements+1 delivery element+2 shearing elements+...; Perhaps 2 shearing elements+3 delivery elements+3 shearing elements+1 delivery element+3 shearing elements+..., or the like, arrange as required.
Preferably, the throughput direction of the said delivery element of part is different at least.
More preferably, said delivery element comprises forward screw thread delivery element and reverse thread delivery element.
Further, before the spout of double screw extruder He before the exhaust outlet, be provided with said reverse thread delivery element.
Preferably, the helical pitch of the said delivery element of part is different at least.
Preferably, the feed angle of the said delivery element of part is different at least.
Preferably, the throughput direction of the said shearing elements of part is different at least.
More preferably, said shearing elements comprises that forward mediates piece, oppositely mediates piece and the neutral piece of mediating.
Preferably, the helical pitch of the said shearing elements of part is different at least.
Preferably, the kneading disc number of the said shearing elements of part is different at least.
Preferably, the kneading disk angle of the said shearing elements of part is different at least.
The beneficial effect of the utility model specifically is: the double screw extruder screw arbor assembly of the utility model comprises screw rod, some delivery elements and some shearing elements; Said delivery element and said shearing elements are interspersed in the fusion plastification section and shearing section of said screw rod; Said delivery element also is distributed in the feeding section, side of said screw rod and feeds section, exhaust section and extruding zone, because the helical pitch of said delivery element, feed angle, throughput direction all can be different, the helical pitch of said shearing elements, mediating disc number, kneading disk angle, throughput direction all can be different; Therefore can be according to the extruding pelletization demand of variety classes, the different modified plastics of forming; The arrangement mode of said delivery element and said shearing elements rationally is set, designs ingenious, simple for structure; Economical and effective; Be applicable to the production of the modified plastics that filler content is higher, guarantee the quality and the output of product, be suitable for large-scale promotion application.
Description of drawings
Fig. 1 is that the master of a specific embodiment of the double screw extruder screw arbor assembly of the utility model looks sketch map, wherein, and 1 screw rod; 2 is delivery element; 3 is shearing elements; 4 is barrel, and 5 is the main mouth of feeding, and 6 is that side is fed mouth; 7 is that exhaust outlet, 8 is vacuum port.
Fig. 2 is that the master of a delivery element of specific embodiment shown in Figure 1 looks sketch map.
Fig. 3 is that the master of another delivery element of specific embodiment shown in Figure 1 looks sketch map.
Fig. 4 is that the master of a shearing elements of specific embodiment shown in Figure 1 looks sketch map.
Fig. 5 is that the master of another shearing elements of specific embodiment shown in Figure 1 looks sketch map.
The specific embodiment
In order more to be expressly understood the technology contents of the utility model, the special following examples of lifting specify.Should be understood that embodiment is used to explain the utility model, rather than to the restriction of the utility model.Wherein identical parts adopt identical Reference numeral.
See also shown in Fig. 1-5; The double screw extruder screw arbor assembly of the utility model comprises screw rod 1, some delivery elements 2 and some shearing elements 3; Said delivery element 2 is interspersed at the fusion plastification section (not shown) and a shearing section (not shown) of said screw rod 1 with said shearing elements 3, and said delivery element 2 also is distributed in feeding section (not shown), the side of said screw rod 1 and feeds section (not shown), exhaust section (not shown) and extruding zone (not shown).
The throughput direction of said delivery element 2 can be identical or different, and preferably, the throughput direction of the said delivery element 2 of part is different at least.In the specific embodiment of the utility model, said delivery element 2 comprises forward screw thread delivery element (not shown) and reverse thread delivery element (not shown).
For anti-flash, in the specific embodiment of the utility model, the spout of double screw extruder (comprise main feed mouthfuls 5 feed mouthfuls 6) with side preceding with exhaust outlet 7 before be provided with said reverse thread delivery element.
The helical pitch of said delivery element 2 can be identical or different, and preferably, the helical pitch of the said delivery element 2 of part is different at least.In the specific embodiment of the utility model, said forward screw thread delivery element has 32/32 (seeing also shown in Figure 2), 48/48 (seeing also shown in Figure 3) and 64/64 by the helical pitch specification.Said reverse thread delivery element has 32/16L by the helical pitch specification.Symbolic significance is exemplified below: 32/32 represents forward screw thread delivery element, and helical pitch length and reach are 32mmm; 32/16L represents the reverse thread delivery element, and helical pitch length and reach are respectively 32mm, 16mm.
The feed angle of said delivery element 2 can be identical or different, and preferably, the feed angle of the said delivery element 2 of part is different at least.In the specific embodiment of the utility model, the feed angle of said delivery element 2 is identical, is 30 °.
The throughput direction of said shearing elements 3 can be identical or different, and preferably, the throughput direction of the said shearing elements 3 of part is different at least.In the specific embodiment of the utility model, said shearing elements 3 comprises that forward mediates piece, oppositely mediates piece and the neutral piece of mediating.
The kneading disc number of said shearing elements 3 can be identical or different, and preferably, the kneading disc number of the said shearing elements 3 of part is different at least.For example 5,4 or the like.
The kneading disk angle of said shearing elements 3 can be identical or different, and preferably, the kneading disk angle of the said shearing elements 3 of part is different at least.For example 45 °, 60 °, 90 ° or the like
The helical pitch length of said shearing elements 3 can be identical or different, and preferably, the helical pitch length of the said shearing elements 3 of part is different at least.For example 32,48 or the like, wherein 32 and 48 represent shearing elements respectively helical pitch length, the mm of unit.
Therefore; In the specific embodiment of the utility model, said shearing elements 3 has K45 °/5/48 (seeing also shown in Figure 4), K60 °/4/32 (seeing also shown in Figure 5) or the like by specification, and wherein K45 °/5/48 expression kneading disk angle is 45 °; 5 kneading disks, helical pitch length are 48mm; K60 °/4/32 expression kneading disk angle is 60 °, 4 kneading disks, and helical pitch length is 32mm.
The double screw extruder of engagement type in the same way with draw ratio L/D=40 is an example below, and the double screw extruder screw arbor assembly of the utility model can be as follows:
Case study on implementation one:
Begin along screw rod 1 length direction: 32/48A from feeding section; 64/64-2; 48/48-2; 32/32-3; K30 °/7/64; K45 °/5/48; 32/32-2; K45 °/5/48; K60 °/4/32; K90 °/5/48; 32/32-2; 32/16L; (filled) 64/64; 48/48-2; 32/32-2; K45 °/5/48; 32/32-2; K45 °/4/48; 64/64; 48/48-2; 32/32-3; K60 °/4/32; 32/32-3; 32/16L; (vacuum exhaust) 64/64-2; 48/48-2; 32/32-4.32/48A represents the start screw threads element, helical pitch length 32mm, reach 48mm; 64/64-2 represents the screwing element of two helical pitch length 64mm.
Case study on implementation two:
Begin along screw rod 1 length direction: 32/48A from feeding section; 64/64-2; 48/48-2; 32/32-3; K30 °/7/64; K30 °/7/64; 32/32-2; K45 °/5/48; K60 °/4/32; K60 °/4/32; 32/32-2; 32/16L; (filled) 64/64; 48/48-2; 32/32-2; K45 °/5/48; 32/32-2; K60 °/4/32; 64/64; 48/48-2; 32/32-3; K90 °/4/48; 32/32-3; 32/16L; (vacuum exhaust) 64/64-2; 48/48-2; 32/32-4
Case study on implementation three:
Begin along screw rod 1 length direction from feeding section; 32/48A, 64/64-2,48/48-2,32/32-3, K45 °/5/48,32/32, K45 °/5/48,32/32-2, K60 °/4/32, K60 °/4/32, K90 °/5/48,32/32-2,32/16L, (filled) 64/64,48/48-2,32/32-2, K30 °/7/64,32/32-2, K45 °/4/48,64/64-2,48/48,32/32-2, K60 °/4/32,32/32-3,32/16L, (vacuum exhaust) 64/64-2,48/48-2,32/32-4
Effect:
After screw rod was implemented above threaded block combination in this parallel dual-screw extruding machine, through operation in a few years, stable, particular content was following:
1) composite sequence of the above screw arbor assembly of implementing can satisfy reinforced, the fusion and mixing of the modified plastics of different cultivars.
2) can use dissimilar fillers, and can use the filler of high filler loading capacity, for example up to 50%, filler can mix in the resin of fusion, and tie rod is stable, and fracture of wire can not move continuously.
3) use the reverse thread delivery element before the charge door, the time of staying of material in screw rod increases, and filler disperses more even in melt.
4) delivery element and shearing elements suitable distribution total length in each zone comprises melting mixing district, charging zone, shear zone, exhaust area; And adopt the reverse thread delivery element before the exhaust outlet, fused materials is difficult to from exhaust outlet, overflow.
Therefore, adopt the utility model, delivery element and shearing elements can make the complete fusion of resin and better mixing according to suitable series arrangement in the double screw extruder screw arbor assembly; The filler of high-load is uniformly dispersed in molten resin, better mixes; Can effectively reduce the wearing and tearing of material and screw thread; Can prevent the flash of the modification material of high-load filler at exhaust outlet.
To sum up, the design of the double screw extruder screw arbor assembly of the utility model is ingenious, simple for structure, and economical and effective is applicable to the production of the modified plastics that filler content is higher, guarantees the quality and the output of product, is suitable for large-scale promotion application.
In this specification, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and the scope of the utility model.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (11)
1. double screw extruder screw arbor assembly; Comprise screw rod; It is characterized in that; Said double screw extruder screw arbor assembly also comprises some delivery elements and some shearing elements, and said delivery element and said shearing elements are interspersed in the fusion plastification section and shearing section of said screw rod, and said delivery element also is distributed in feeding section, the side of said screw rod and feeds section, exhaust section and extruding zone.
2. double screw extruder screw arbor assembly according to claim 1 is characterized in that, the throughput direction of the said delivery element of part is different at least.
3. double screw extruder screw arbor assembly according to claim 2 is characterized in that, said delivery element comprises forward screw thread delivery element and reverse thread delivery element.
4. double screw extruder screw arbor assembly according to claim 3 is characterized in that, before the spout of double screw extruder He before the exhaust outlet, is provided with said reverse thread delivery element.
5. double screw extruder screw arbor assembly according to claim 1 is characterized in that, the helical pitch of the said delivery element of part is different at least.
6. double screw extruder screw arbor assembly according to claim 1 is characterized in that, the feed angle of the said delivery element of part is different at least.
7. double screw extruder screw arbor assembly according to claim 1 is characterized in that, the throughput direction of the said shearing elements of part is different at least.
8. double screw extruder screw arbor assembly according to claim 7 is characterized in that, said shearing elements comprises that forward mediates piece, oppositely mediates piece and the neutral piece of mediating.
9. double screw extruder screw arbor assembly according to claim 1 is characterized in that, the helical pitch of the said shearing elements of part is different at least.
10. double screw extruder screw arbor assembly according to claim 1 is characterized in that, the kneading disc number of the said shearing elements of part is different at least.
11. double screw extruder screw arbor assembly according to claim 1 is characterized in that, the kneading disk angle of the said shearing elements of part is different at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204441503U CN202318878U (en) | 2011-11-10 | 2011-11-10 | Screw rod assembly of double-screw extruder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204441503U CN202318878U (en) | 2011-11-10 | 2011-11-10 | Screw rod assembly of double-screw extruder |
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|---|---|
| CN202318878U true CN202318878U (en) | 2012-07-11 |
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| CN2011204441503U Expired - Lifetime CN202318878U (en) | 2011-11-10 | 2011-11-10 | Screw rod assembly of double-screw extruder |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837408A (en) * | 2012-09-18 | 2012-12-26 | 贵州凯科特材料有限公司 | Double screw extruder and method for using same to prepare light-smell polypropylene |
| CN102886887A (en) * | 2012-10-19 | 2013-01-23 | 无锡市百顺机械厂 | Extruding structure of extruder |
| CN103665789A (en) * | 2013-11-29 | 2014-03-26 | 金发科技股份有限公司 | Fully biodegradable polyester material, and preparation method and application thereof |
| CN103709683A (en) * | 2013-12-20 | 2014-04-09 | 上海锦湖日丽塑料有限公司 | Polyester composition with high rigidity and preparation method thereof |
| CN103935014A (en) * | 2014-04-01 | 2014-07-23 | 柏力开米复合塑料(昆山)有限公司 | Screw rod set |
| CN104175527A (en) * | 2013-05-21 | 2014-12-03 | 科倍隆有限公司 | Multi-shaft screw-type machine for processing materials |
| CN105599166A (en) * | 2015-12-28 | 2016-05-25 | 中胶橡胶资源再生（青岛）有限公司 | Multiple-screw extruding device for refining forming of regenerated rubber powder and refining method |
| CN111629873A (en) * | 2017-10-17 | 2020-09-04 | 巴斯股份公司 | Mixing kneader having kneading element receiving regions distributed in an uneven manner on the inner circumferential surface of the housing |
-
2011
- 2011-11-10 CN CN2011204441503U patent/CN202318878U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837408A (en) * | 2012-09-18 | 2012-12-26 | 贵州凯科特材料有限公司 | Double screw extruder and method for using same to prepare light-smell polypropylene |
| CN102837408B (en) * | 2012-09-18 | 2015-02-18 | 贵州凯科特材料有限公司 | Double screw extruder and method for using same to prepare light-smell polypropylene |
| CN102886887A (en) * | 2012-10-19 | 2013-01-23 | 无锡市百顺机械厂 | Extruding structure of extruder |
| CN104175527B (en) * | 2013-05-21 | 2017-07-14 | 科倍隆有限公司 | Multiaxis screw machine for rapidoprint |
| CN104175527A (en) * | 2013-05-21 | 2014-12-03 | 科倍隆有限公司 | Multi-shaft screw-type machine for processing materials |
| CN103665789A (en) * | 2013-11-29 | 2014-03-26 | 金发科技股份有限公司 | Fully biodegradable polyester material, and preparation method and application thereof |
| CN103665789B (en) * | 2013-11-29 | 2016-04-20 | 金发科技股份有限公司 | A kind of complete biodegradable polyester material and its preparation method and application |
| CN103709683A (en) * | 2013-12-20 | 2014-04-09 | 上海锦湖日丽塑料有限公司 | Polyester composition with high rigidity and preparation method thereof |
| CN103709683B (en) * | 2013-12-20 | 2015-12-02 | 上海锦湖日丽塑料有限公司 | Polymer blend of a kind of high rigidity and preparation method thereof |
| CN103935014A (en) * | 2014-04-01 | 2014-07-23 | 柏力开米复合塑料(昆山)有限公司 | Screw rod set |
| CN105599166A (en) * | 2015-12-28 | 2016-05-25 | 中胶橡胶资源再生（青岛）有限公司 | Multiple-screw extruding device for refining forming of regenerated rubber powder and refining method |
| CN105599166B (en) * | 2015-12-28 | 2018-08-31 | 中胶橡胶资源再生（青岛）有限公司 | Molding multiscrew extrusion device and method of refining are refined for regnerated rubber powder |
| CN111629873A (en) * | 2017-10-17 | 2020-09-04 | 巴斯股份公司 | Mixing kneader having kneading element receiving regions distributed in an uneven manner on the inner circumferential surface of the housing |
| US11331634B2 (en) | 2017-10-17 | 2022-05-17 | Buss Ag | Mixing and kneading machine with receiving areas for kneading elements, said receiving areas being distributed over the inner circumferential surface of the housing in a non-uniform manner |
| US11504680B2 (en) | 2017-10-17 | 2022-11-22 | Buss Ag | Double-bladed worm shaft for a mixing and kneading machine, wherein each of the blade elements has an elliptic, oval, or bioconvex outer peripheral surface in the top view |
| TWI791643B (en) * | 2017-10-17 | 2023-02-11 | 瑞士商布斯股份有限公司 | Mixing and kneading machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |