CN206870341U - Single-screw extruder bolt special - Google Patents
Single-screw extruder bolt special Download PDFInfo
- Publication number
- CN206870341U CN206870341U CN201720322916.8U CN201720322916U CN206870341U CN 206870341 U CN206870341 U CN 206870341U CN 201720322916 U CN201720322916 U CN 201720322916U CN 206870341 U CN206870341 U CN 206870341U
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- 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.)
- Expired - Fee Related
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a kind of single-screw extruder bolt special, and 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 increase in the start-up portion of melt zone；Described melt zone whole process is provided with the first auxiliary screw thread, and before melt zone in 2/3rds strokes, the top footpath gradual change of the first auxiliary screw thread is incremented by, and invariable in rear three/one stroke of melt zone；It is identical in the afterbody of melt zone, main thread top footpath, the first auxiliary crest diameter；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
It the utility model is related 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 application and production efficiency of extruder, and the plasticizing and molding effect of the architectural feature of screw rod, basic parameter to plastics
Have a great influence, it is however generally that, the viscosity height of material, the plastic friction heat of poor fluidity are 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
Cutting the material of sensitivity, by huge shearing to be produced from warming phenomenon obvious, causes material in extrusion to overheat；It is 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
Technical problem to be solved in the utility model is to provide a kind of single-screw extruder bolt special, and its is equal
It is preferable to change effect, power consumption is low, and material conveying capacity is strong.
In order to solve the above technical problems, of the present utility model include feeding section, melt zone and metering section, described spiral shell successively
Whole process is provided with main thread on bar, and described feeding section equidistantly waits the root footpath of deep, described screw rod in the start-up portion of melt zone
Increase；Described melt zone whole process is provided with the first auxiliary screw thread, before melt zone in 2/3rds strokes, the first auxiliary spiral shell
The top footpath gradual change of line is incremented by, and invariable in rear three/one stroke of melt zone；On 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.
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, constant screw rod root footpath is 106mm；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；Before melt zone 2 in 2/3rds strokes, 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 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 are 12mm；In melt zone, main thread
Pitch is 160mm, and in feeding section, the pitch of main thread is 150mm.
The utility model establishes simplified extruder screw optimization design with the minimum optimization aim of the energy consumption of specific yield
Mathematical modeling, for the requirement of plastic extrusion, comprehensive consideration is carried out to feeding section, melt zone and metering section, so as to obtain spiral shell
Rib width, spiral groove depth, screw rod melt zone rise, the best fit of the spiral groove depth of end and lead angle, improve extrusion effect
Rate and final products quality, its homo-effect is preferable, and power consumption is low, and material conveying capacity is strong.The utility model is especially suitable
Extrusion raw material 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 present utility model；
Fig. 2 is the schematic diagram of the feeding section of single-screw extruder bolt special of the present utility model；
Fig. 3 is the schematic diagram of the melt zone of single-screw extruder bolt special of the present utility model；
Fig. 4 is the schematic diagram of the metering section of single-screw extruder bolt special of the present utility model.
Embodiment
The utility model is described further 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
1 --- length 1065mm, melt zone 2 --- length 3740mm, metering section 3 --- length 1145mm, described spiral shell of section
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 11For 106mm, main thread top footpath D1For 125mm.The feeding section 1
Main thread 4 lead angle α 1 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, is 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 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 feeding section 1.In the present embodiment, the melting of main thread 4
2 pitch S of section2For 160mm, the pitch S of feeding section 11For 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 present utility model is applied to a variety of single-screw extruders, and its homo-effect is preferable, and power disappears
Consume low, material conveying capacity is strong.The especially suitable extrusion raw material of the utility model is polyvinyl chloride（PVC）, polyethylene (PE), poly- second
Alkene crosslinking (XLPE), polypropylene（PP）Deng hot-melt plastic.
Claims (6)
- A kind of 1. 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）It is equidistant to wait deeply, 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）For 125mm；In melt zone（2）, the main thread top footpath of the screw rod by 125mm gradual changes are incremented to 137mm；Before melt zone 2 in 2/3rds strokes, 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 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）For 15mm；The melt zone（2）, spiral shell rib width（e2）For 12mm；In melt zone（2）, main thread（4）Pitch（S2）For 160mm, in feeding section（1）, main thread（4）Pitch（S1）For 150mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322916.8U CN206870341U (en) | 2017-03-30 | 2017-03-30 | Single-screw extruder bolt special |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322916.8U CN206870341U (en) | 2017-03-30 | 2017-03-30 | Single-screw extruder bolt special |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206870341U true CN206870341U (en) | 2018-01-12 |
Family
ID=61327273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720322916.8U Expired - Fee Related CN206870341U (en) | 2017-03-30 | 2017-03-30 | Single-screw extruder bolt special |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206870341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106827452A (en) * | 2017-03-30 | 2017-06-13 | 安庆市汇东机械有限责任公司 | Single-screw extruder bolt special |
-
2017
- 2017-03-30 CN CN201720322916.8U patent/CN206870341U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106827452A (en) * | 2017-03-30 | 2017-06-13 | 安庆市汇东机械有限责任公司 | Single-screw extruder bolt special |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 Termination date: 20180330 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |