CN106827452A - Single-screw extruder bolt special - Google Patents
Single-screw extruder bolt special Download PDFInfo
- Publication number
- CN106827452A CN106827452A CN201710200892.3A CN201710200892A CN106827452A CN 106827452 A CN106827452 A CN 106827452A CN 201710200892 A CN201710200892 A CN 201710200892A CN 106827452 A CN106827452 A CN 106827452A
- Authority
- CN
- China
- Prior art keywords
- melt zone
- screw
- feeding section
- thread
- main thread
- 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
Links
Classifications
-
- 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
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
-
- 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
- B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
-
- 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
- B29C48/535—Screws with thread pitch varying along the longitudinal axis
-
- 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
- B29C48/64—Screws with two or more threads
- B29C48/655—Screws with two or more threads having three or more threads
Abstract
The invention provides a kind of single-screw extruder bolt special, its homo-effect is preferable, and power consumption is low, and material conveying capacity is strong.The screw rod includes feeding section, melt zone and metering section successively, and whole process is provided with main thread on described screw rod, and described feeding section equidistantly waits the root footpath of deep, described screw rod to be mutated in the start-up portion of melt zone to be increased；Described melt zone whole process is provided with the first auxiliary screw thread, and in 2/3rds strokes before melt zone, the top footpath gradual change of the first auxiliary screw thread is incremented by, and invariable in the rear three/one stroke of melt zone；In the afterbody of melt zone, main thread top footpath, the first auxiliary crest diameter are identical；Three-start screw is provided with the middle part of described metering section, the afterbody of the metering section is provided with double thread.
Description
Technical field
The present invention relates to plastic extruder, and in particular to a kind of extruder screw.
Background technology
Single screw extrusion machine is a kind of important plastic extruding forming equipment, and screw rod is the critical piece of extruder, relation
To the range of application and production efficiency of extruder, and the plasticizing and molding effect of the architectural feature of screw rod, basic parameter to plastics
Influence is larger, it is however generally that, the viscosity of material is high, poor fluidity plastic friction heat is fast, and more sensitive to temperature shearing,
Preferably select big L/D ratio, the screw rod of low compression ratio；In the prior art, screw of plastic extruder homo-effect is not ideal enough, to cutting
The material for cutting sensitivity is produced from warming phenomenon substantially by huge shearing, and material is overheated in causing extrusion；In addition, existing
Power of motor consumption is larger during screw rod shearing, and the conveying capacity of material is not ideal enough.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of single-screw extruder bolt special, its homogenizing effect
Fruit is preferable, and power consumption is low, and material conveying capacity is strong.
In order to solve the above technical problems, of the invention include feeding section, melt zone and metering section successively, on described screw rod
Whole process is provided with main thread, and described feeding section equidistantly waits the root footpath of deep, described screw rod in the start-up portion increase of melt zone；
Described melt zone whole process is provided with the first auxiliary screw thread, in 2/3rds strokes before melt zone, the first auxiliary screw thread
Top footpath gradual change is incremented by, and invariable in the rear three/one stroke of melt zone；In the afterbody of melt zone, main thread top footpath,
First auxiliary crest diameter is identical；It is provided with three-start screw in the middle part of described metering section, the afterbody of the metering section is provided with double
Head thread.
The lead angle of the main thread of the feeding section is 21 °.
The melt zone pitch of the main thread is more than the feeding section pitch.
The length ratio of the feeding section, melt zone and metering section is 1：1.43:1.08.
Compression ratio i=2.8 ~ 3.2 of the single-screw extruder bolt special.
In described feeding section, it is 106mm that screw rod root footpath is constant；In the start-up portion of melt zone, screw rod root footpath increases to
125mm；In described feeding section, main thread top footpath is 125mm；In melt zone, the main thread top footpath of the screw rod by 125mm gradually
Change is incremented to 137mm；In 2/3rds strokes before melt zone 2, the top footpath of the first auxiliary screw thread 5 is passed by 106mm gradual changes
137mm is increased to, and it is invariable in the rear three/one stroke of melt zone 2；The lead angle α of the main thread of the feeding section
1 is 21 °；The spiral shell rib width of the feeding section is 15mm；The melt zone, spiral shell rib width is 12mm；In melt zone, main thread
Pitch is 160mm, and in feeding section, the pitch of main thread is 150mm.
The present invention sets up the number of simplified extruder screw optimization design with the minimum optimization aim of energy consumption of specific yield
Model is learned, for the requirement of plastic extrusion, comprehensive consideration is carried out to feeding section, melt zone and metering section, it is wide so as to obtain spiral shell rib
Degree, spiral groove depth, screw rod melt zone rise, the best fit of the spiral groove depth of end and lead angle, improve extrusion efficiency and
Final products quality, its homo-effect is preferable, and power consumption is low, and material conveying capacity is strong.The especially suitable extrusion raw material of the present invention
It is polyvinyl chloride（PVC）, polyethylene (PE), polyethylene crosslinking (XLPE), polypropylene（PP）Deng hot-melt plastic.
Brief description of the drawings
Fig. 1 is the structural representation of single-screw extruder bolt special of the invention；
Fig. 2 is the schematic diagram of the feeding section of single-screw extruder bolt special of the invention；
Fig. 3 is the schematic diagram of the melt zone of single-screw extruder bolt special of the invention；
Fig. 4 is the schematic diagram of the metering section of single-screw extruder bolt special of the invention.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
As Fig. 1,2,3,4 are visible, in the present embodiment, described single-screw extruder bolt special includes charging successively
--- length is 1065mm, melt zone 2 --- length is 3740mm, metering section 3 ---, and length is 1145mm to section 1, described spiral shell
Whole process is provided with main thread 4 on bar, and described feeding section 1 equidistantly waits deep, the i.e. screw rod root footpath d of feeding section 11, main thread top footpath D1
It is invariable, in the present embodiment, the screw rod root footpath d of feeding section 11It is 106mm, main thread top footpath D1It is 125mm.The feeding section 1
The lead angle α 1 of main thread 4 be 21 °, the spiral shell rib width e 1 of the feeding section 1 is 15mm.
The root footpath of described screw rod increases to d in the start-up portion of melt zone 22, in the present embodiment, d2=125mm, main thread
Top footpath is incremented to 137mm in melt zone 2 by 125mm gradual changes；The described whole process of melt zone 2 is provided with the first auxiliary screw thread 5, in melting
In preceding 2/3rds stroke of section 2, the top footpath of the first auxiliary screw thread 5（D2）137mm is incremented to by 106mm gradual changes, and molten
Melt invariable in the rear three/one stroke of section 2.In the afterbody of melt zone 2, main thread top footpath, the first auxiliary crest diameter phase
Together.The lead angle of the main thread 4 of the melt zone 2 is 21 °, and spiral shell rib width e 2 is 12mm.
The pitch of melt zone 2 of the main thread 4 is more than the pitch of the feeding section 1.In the present embodiment, the melting of main thread 4
2 pitch S of section2It is 160mm, the pitch S of feeding section 11It is 150mm.
The middle part of described metering section 3 is provided with three-start screw 6, and the afterbody of the metering section 3 is provided with double thread 7.
The length ratio of the feeding section 1, melt zone 2 and metering section 3 is 1：1.43:1.08.
Compression ratio i=2.8 ~ 3.2 of the single-screw extruder bolt special.
Bolt special of the invention is applied to various single-screw extruders, and its homo-effect is preferable, and power consumption is low,
Material conveying capacity is strong.The especially suitable extrusion raw material of the present invention is polyvinyl chloride（PVC）, polyethylene (PE), polyethylene crosslinking
(XLPE), polypropylene（PP）Deng hot-melt plastic.
Claims (6)
1. a kind of single-screw extruder bolt special, successively including feeding section（1）, melt zone（2）And metering section（3）, institute
Whole process is provided with main thread on the screw rod stated（4）, it is characterised in that：Described feeding section（1）Equidistantly wait deep, described screw rod
Root footpath is in melt zone（2）Start-up portion increase；Described melt zone（2）Whole process is provided with the first auxiliary screw thread（5）, in melt zone
（2）Preceding 2/3rds stroke in, the first auxiliary screw thread（5）The gradual change of top footpath be incremented by, and in melt zone（2）Rear three/
It is invariable in one stroke；In melt zone（2）Afterbody, main thread top footpath, the first auxiliary crest diameter are identical；Described metering section
（3）Middle part be provided with three-start screw（6）, the metering section（3）Afterbody be provided with double thread（7）.
2. single-screw extruder bolt special as claimed in claim 1, it is characterised in that：The feeding section（1）Master
Screw thread（4）Lead angle be 21 °.
3. single-screw extruder bolt special as claimed in claim 1 or 2, it is characterised in that：The main thread（4）'s
Melt zone（2）Pitch is more than the feeding section（1）Pitch.
4. single-screw extruder bolt special as claimed in claim 1 or 2, it is characterised in that：The feeding section（1）、
Melt zone（2）And metering section（3）Length ratio be 1：1.43:1.08.
5. single-screw extruder bolt special as claimed in claim 1 or 2, it is characterised in that：The single screw rod plastics
Compression ratio i=2.8 ~ 3.2 of extruder bolt special.
6. single-screw extruder bolt special as claimed in claim 1 or 2, it is characterised in that：In described feeding section
（1）, screw rod root footpath（d1）Constant is 106mm；In melt zone（2）Start-up portion, screw rod root footpath（d2）Increase to 125mm；
In described feeding section（1）, main thread top footpath（D1）It is 125mm；In melt zone（2）, the main thread top footpath of the screw rod by
125mm gradual changes are incremented to 137mm；
In 2/3rds strokes before melt zone 2, the top footpath of the first auxiliary screw thread 5（D2）It is incremented to by 106mm gradual changes
137mm, and it is invariable in the rear three/one stroke of melt zone 2；
The feeding section（1）Main thread（4）Lead angle α 1 be 21 °；
The feeding section（1）Spiral shell rib width（e1）It is 15mm；The melt zone（2）, spiral shell rib width（e2）It is 12mm；
In melt zone（2）, main thread（4）Pitch（S2）It is 160mm, in feeding section（1）, main thread（4）Pitch（S1）For
150mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710200892.3A CN106827452A (en) | 2017-03-30 | 2017-03-30 | Single-screw extruder bolt special |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710200892.3A CN106827452A (en) | 2017-03-30 | 2017-03-30 | Single-screw extruder bolt special |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106827452A true CN106827452A (en) | 2017-06-13 |
Family
ID=59142500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710200892.3A Pending CN106827452A (en) | 2017-03-30 | 2017-03-30 | Single-screw extruder bolt special |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106827452A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014613A (en) * | 2018-08-01 | 2019-07-16 | 东莞天天向上医疗科技有限公司 | A kind of single screw rod Precise Extrusion screw rod |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07276451A (en) * | 1994-04-06 | 1995-10-24 | Honda Motor Co Ltd | Screw for resin molding machine |
| JPH081730A (en) * | 1994-06-24 | 1996-01-09 | Ube Ind Ltd | Plasticization screw |
| CN201669874U (en) * | 2010-05-26 | 2010-12-15 | 广东达诚机械有限公司 | High-speed extrusion single screw for polypropylene |
| CN203357859U (en) * | 2013-06-09 | 2013-12-25 | 北京中丽制机工程技术有限公司 | Screw rod for spinning |
| CN203919666U (en) * | 2014-04-30 | 2014-11-05 | 泉州东方机械有限公司 | The high extruder screw that mixes of a kind of high shear |
| CN104589618A (en) * | 2015-01-12 | 2015-05-06 | 安徽普瑞斯电工机械有限公司 | Special two-section BM type screw rod for wire and cable extruder |
| CN204869330U (en) * | 2015-08-10 | 2015-12-16 | 武汉新中德塑机股份有限公司 | Single screw plastic exdruder |
| CN205614960U (en) * | 2016-04-22 | 2016-10-05 | 浙江华业塑料机械有限公司 | Screw rod of moulding plastics |
| CN206870341U (en) * | 2017-03-30 | 2018-01-12 | 安徽汇东机械有限责任公司 | Single-screw extruder bolt special |
-
2017
- 2017-03-30 CN CN201710200892.3A patent/CN106827452A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07276451A (en) * | 1994-04-06 | 1995-10-24 | Honda Motor Co Ltd | Screw for resin molding machine |
| JPH081730A (en) * | 1994-06-24 | 1996-01-09 | Ube Ind Ltd | Plasticization screw |
| CN201669874U (en) * | 2010-05-26 | 2010-12-15 | 广东达诚机械有限公司 | High-speed extrusion single screw for polypropylene |
| CN203357859U (en) * | 2013-06-09 | 2013-12-25 | 北京中丽制机工程技术有限公司 | Screw rod for spinning |
| CN203919666U (en) * | 2014-04-30 | 2014-11-05 | 泉州东方机械有限公司 | The high extruder screw that mixes of a kind of high shear |
| CN104589618A (en) * | 2015-01-12 | 2015-05-06 | 安徽普瑞斯电工机械有限公司 | Special two-section BM type screw rod for wire and cable extruder |
| CN204869330U (en) * | 2015-08-10 | 2015-12-16 | 武汉新中德塑机股份有限公司 | Single screw plastic exdruder |
| CN205614960U (en) * | 2016-04-22 | 2016-10-05 | 浙江华业塑料机械有限公司 | Screw rod of moulding plastics |
| CN206870341U (en) * | 2017-03-30 | 2018-01-12 | 安徽汇东机械有限责任公司 | Single-screw extruder bolt special |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014613A (en) * | 2018-08-01 | 2019-07-16 | 东莞天天向上医疗科技有限公司 | A kind of single screw rod Precise Extrusion screw rod |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 246000 Anhui Anqing high tech Zone Crown Road No. 8 (Anqing Phoenix Science and Technology Industrial Park) Applicant after: ANHUI HUIDONG MACHINERY Co.,Ltd. Address before: 246000 Anhui Anqing high tech Zone Crown Road No. 8 (Anqing Phoenix Science and Technology Industrial Park) Applicant before: ANQING HUIDONG MECHANICAL CO.,LTD. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170613 |