CN104369347A - Screw rod of extruder - Google Patents
Screw rod of extruder Download PDFInfo
- Publication number
- CN104369347A CN104369347A CN201410682111.5A CN201410682111A CN104369347A CN 104369347 A CN104369347 A CN 104369347A CN 201410682111 A CN201410682111 A CN 201410682111A CN 104369347 A CN104369347 A CN 104369347A
- Authority
- CN
- China
- Prior art keywords
- section
- material extrusion
- screw rod
- screw thread
- extruder
- 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
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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
- B29C48/535—Screws with thread pitch varying along the longitudinal axis
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a screw rod of an extruder. The screw rod comprises a screw rod body, wherein a material feeding section, a melting section, a material extrusion section and a flexible refining section are arranged on the screw rod body in sequence; material extrusion threads are uniformly distributed on the material feeding section, the melting section, the material extrusion section and the flexible refining section; the intervals of the material extrusion threads of the material feeding section are less than those of the material extrusion threads of the melting section; the intervals of the material extrusion threads of the melting section are less than those of the material extrusion threads of the material extrusion section; the intervals of the material extrusion threads of the material extrusion section are less than those of the material extrusion threads of the flexible refining section. By the screw rod, the defect that an existing extruder is not suitable for producing foamed plastics is overcome.
Description
Technical field
The present invention relates to extruder accessory field, particularly a kind of screw rod of extruder.
Background technology
Though existing extruder can extrude the section bar of various plastics, the inadaptable plastics producing foaming, reason is because expanded material decomposition temperature is low; So existing extruder is difficult to extrude surfacing skinning uniformly and stably, the plastics that inner expansion ratio is high, pore is fine and closely woven can be obtained again.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of screw rod of extruder, thus overcome the shortcoming that existing extruder is not suitable with the plastics producing foaming.
For achieving the above object, the invention provides a kind of screw rod of extruder, comprising: screw body, described screw body sets gradually pan feeding section, melt zone, signature material section, refining section; Described pan feeding section, described melt zone, described signature material section and described refining section are distributed with material extrusion screw thread, wherein, described in the gap ratio of the material extrusion screw thread in described pan feeding section, the spacing of the material extrusion screw thread of melt zone is little, the spacing of giving as security the material extrusion screw thread of material section described in the gap ratio of the material extrusion screw thread of described melt zone is little, and described in the described gap ratio giving as security the material extrusion screw thread of material section, the spacing of the material extrusion screw thread of refining section is little.
In technique scheme, described pan feeding section is provided with two thread segments separated.
In technique scheme, the length of described refining section is 30cm.
In technique scheme, described length of giving as security material section is 40cm.
In technique scheme, the length of described pan feeding section is 55cm.
In technique scheme, the length of described melt zone is 170cm.
Compared with prior art, the present invention has following beneficial effect:
1. the screw rod of the extruder in the present invention, by arranging pan feeding section, melt zone, signature material section, refining section four work section on the screw rod of extruder, and increase the stroke distances of plastic raw materials respectively by the flight pitch in this screw rod four Ge Duan district, thus effectively reduce temperature, realize the feature meeting the decomposition of expanded material low temperature.
2. the optimization of four work section certain length relations is set, guarantee further the production efficiency that foams rapidly, constant product quality, and interiors of products expansion ratio is high, and pore is tiny intensive, thus extrudes for low temperature and provide guarantee.Not only can guarantee that the production efficiency of foaming is rapid, constant product quality, the goods simultaneously extruded inner expansion ratio height pore is fine and closely woven, can realize low temperature and extrude.
Accompanying drawing explanation
Fig. 1 is the structural representation of the screw rod according to extruder of the present invention.
Main Reference Numerals illustrates:
1-screw body, 2-pan feeding section, 3-melt zone, 4-gives as security material section, 5-refining section, 6-material extrusion screw thread.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of detailed description of the invention.
Clearly represent unless otherwise other, otherwise in whole description and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or part, and do not get rid of other element or other part.
As shown in Figure 1, according to the screw rod of a kind of extruder of the specific embodiment of the invention, comprise screw body 1, screw body 1 sets gradually pan feeding section 2, melt zone 3, give as security material section 4, refining section 5, pan feeding section 2 can realize plastic solid liquid conversion, give as security material section 4 and can realize quantitative transmission, refining section 5 can realize the liquid state of melting to mix, foamed gas is spread at inner homogeneous, in the present embodiment, pan feeding section 2, melt zone 3, give as security in material section 4 and refining section 5 and be distributed with material extrusion screw thread 6, wherein, pan feeding section 2 on the spacing of material extrusion screw thread 6 of gap ratio melt zone 3 of material extrusion screw thread 6 little, the spacing of the material extrusion screw thread 6 of the gap ratio signature material section 4 of the material extrusion screw thread 6 of melt zone 3 is little, the spacing of giving as security the material extrusion screw thread 6 of the gap ratio refining section 5 of the material extrusion screw thread 6 of material section 4 is little.By arranging pan feeding section 2, melt zone 3 on the screw rod of extruder, giving as security and expect section 4, refining section 5 four work section, and increase the stroke distances of plastic raw materials respectively by the flight pitch in this screw rod four Ge Duan district, thus effectively reduce temperature, realize the feature meeting the decomposition of expanded material low temperature.
In this embodiment, preferably arranged by following scheme in four Ge Duan districts, pan feeding section 2 is provided with two thread segments separated, and the length of refining section 5 is 30cm, and the length of giving as security material section 4 is 40cm, and the length of pan feeding section 2 is 55cm, and the length of melt zone 3 is 170cm.The optimization of four work section certain length relations is set, guarantee further the production efficiency that foams rapidly, constant product quality, and interiors of products expansion ratio is high, and pore is tiny intensive, thus extrudes for low temperature and provide guarantee.Not only can guarantee that the production efficiency of foaming is rapid, constant product quality, the goods simultaneously extruded inner expansion ratio height pore is fine and closely woven, can realize low temperature and extrude.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (6)
1. a screw rod for extruder, is characterized in that, comprising:
Screw body, described screw body sets gradually pan feeding section, melt zone, signature material section, refining section; Described pan feeding section, described melt zone, described signature material section and described refining section are distributed with material extrusion screw thread, wherein, described in the gap ratio of the material extrusion screw thread of described pan feeding section, the spacing of the material extrusion screw thread of melt zone is little, the spacing of giving as security the material extrusion screw thread of material section described in the gap ratio of the material extrusion screw thread of described melt zone is little, and described in the described gap ratio giving as security the material extrusion screw thread of material section, the spacing of the material extrusion screw thread of refining section is little.
2. the screw rod of extruder according to claim 1, is characterized in that, described pan feeding section is provided with two thread segments separated.
3. the screw rod of extruder according to claim 1, is characterized in that, the length of described refining section is 30cm.
4. the screw rod of extruder according to claim 1, is characterized in that, described length of giving as security material section is 40cm.
5. the screw rod of extruder according to claim 1, is characterized in that, the length of described pan feeding section is 55cm.
6. the screw rod of extruder according to claim 1, is characterized in that, the length of described melt zone is 170cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410682111.5A CN104369347A (en) | 2014-11-24 | 2014-11-24 | Screw rod of extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410682111.5A CN104369347A (en) | 2014-11-24 | 2014-11-24 | Screw rod of extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104369347A true CN104369347A (en) | 2015-02-25 |
Family
ID=52548669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410682111.5A Pending CN104369347A (en) | 2014-11-24 | 2014-11-24 | Screw rod of extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104369347A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030016585A1 (en) * | 1998-05-06 | 2003-01-23 | Leveque Alain Yves | Low compression screw |
| US20040085852A1 (en) * | 1999-06-24 | 2004-05-06 | Eberhard Grunschloss | Single screw extruder |
| JP2006327050A (en) * | 2005-05-26 | 2006-12-07 | Sekisui Chem Co Ltd | Forming method of optical film, optical film and phase difference film |
| CN201900718U (en) * | 2010-12-02 | 2011-07-20 | 张家港华明机械有限公司 | Foaming screw for foaming polystyrene (PS) picture frame section bar production line extruder |
| CN203510684U (en) * | 2013-09-05 | 2014-04-02 | 昆山地博光电材料有限公司 | Plastic extrusion screw rod of PC (polycarbonate) film |
-
2014
- 2014-11-24 CN CN201410682111.5A patent/CN104369347A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030016585A1 (en) * | 1998-05-06 | 2003-01-23 | Leveque Alain Yves | Low compression screw |
| US20040085852A1 (en) * | 1999-06-24 | 2004-05-06 | Eberhard Grunschloss | Single screw extruder |
| JP2006327050A (en) * | 2005-05-26 | 2006-12-07 | Sekisui Chem Co Ltd | Forming method of optical film, optical film and phase difference film |
| CN201900718U (en) * | 2010-12-02 | 2011-07-20 | 张家港华明机械有限公司 | Foaming screw for foaming polystyrene (PS) picture frame section bar production line extruder |
| CN203510684U (en) * | 2013-09-05 | 2014-04-02 | 昆山地博光电材料有限公司 | Plastic extrusion screw rod of PC (polycarbonate) film |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150225 |
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| WD01 | Invention patent application deemed withdrawn after publication |