CN102896760A - Extruder screw - Google Patents
Extruder screw Download PDFInfo
- Publication number
- CN102896760A CN102896760A CN2012103972218A CN201210397221A CN102896760A CN 102896760 A CN102896760 A CN 102896760A CN 2012103972218 A CN2012103972218 A CN 2012103972218A CN 201210397221 A CN201210397221 A CN 201210397221A CN 102896760 A CN102896760 A CN 102896760A
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- CN
- China
- Prior art keywords
- section
- screw rod
- screw
- extruder
- extruder screw
- 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.)
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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
- B29C48/565—Screws having projections other than the thread, e.g. pins
Abstract
The invention provides an extruder screw. The screw is sequentially divided into a film port section, a homogenizing section, a conveying section, a compression section, an extrusion section and a charging section from a film port end and has a split structure, wherein the sections are connected through threads or keys or by welding; and the central axis of each section of the screw is a straight line and penetrates through and is concentric with an extruder barrel. The extruder screw has the split structure, and the sections have different structural forms, so that different requirements of the sections in the extrusion process are met, and product quality is improved; and the extruder screw has a simple structural form and is easy to manufacture and convenient to mount.
Description
Technical field
The present invention relates to a kind of extruder screw rod structure.
Technical background
Injection screw is by its adaptability to plastics, can be divided into Universal screw rod and special screw rod, Universal screw rod claims again conventional screw, can process major part and have thermoplastic low, middle viscosity, civilian plastics and the engineering plastics of crystal type and non-crystalline type, be the most basic form of screw rod, its corresponding also have special screw rod, is processing with the unmanageable plastics of common screw; Press screw-rod structure and geometric characteristic thereof, can be divided into conventional screw and new screw, conventional screw is called again three-stage screw, is the citation form of screw rod, the new screw form then has a variety of, such as separating screw rod, bypass type screw rod, wavy screw rod, without metering section screw rod etc.Its screw thread effective length of conventional screw is divided into feeding section (transportation section), compression section (fluxing zone), metering section (homogenizing zone) usually, and is different according to plastic nature, can be divided into gradation type, saltant and general spiro rod.1. gradation type screw rod: the compression section is longer, and power conversion relaxes during plasticizing, and is multiplex in the plastics of the poor heat stability such as PVC.2. saltant screw rod: the compression section is shorter, and power conversion is more violent during plasticizing, and is multiplex in crystalline plasticses such as polyolefin, PA.3. general spiro rod: the general spiro rod that adaptability is more intense, can adapt to the processing of multiple plastics, avoid changing screw rod frequent, be conducive to enhance productivity.
Summary of the invention
In order to overcome above problem, the invention provides a kind of extruder screw rod structure, this screw-rod structure is different in the version of each section, and its processing mode can adopt segmented processing, then adopts to be threaded or the key connection.
For solving above technical problem, technical scheme provided by the invention is as follows: a kind of extruder screw rod structure, described screw-rod structure film mouth end begins to be divided into successively six sections: film mouth section, homogenizing zone, transportation section, compression section, extruded segment, feeding section, this screw rod is Split type structure, adopt screw rod to connect between every section or adopt key to connect or adopt and be welded to connect, the axis of every section screw rod is straight line, and it is concentric to pass extruder barrel.
Further, described film mouth segment structure is a conicity structure.
Further, the surface of described homogenizing zone screw rod has projection, and the cross section of projection is trapezoidal.
Further, described transportation section screw surface is spirality spiral shell rib.
Further, described compression section screw surface has a projection.
Further, the spiral shell rib structure of described extruded segment screw surface is spirality.
Further, the spiral shell rib of described feeding section screw rod is annular protrusion, and this annular protrusion is concentric with screw rod.
This extruder screw rod structure that the present invention relates to is Split type structure, and the version of every segment structure is different, is applicable to the different requirements of each section of extrusion process, Improving The Quality of Products.
Description of drawings
Fig. 1 is extruder screw rod structure overall structure schematic diagram of the present invention;
1-film mouth section; The 2-homogenizing zone; The 3-transportation section; The 4-compression section; The 5-extruded segment; The 6-feeding section.
The specific embodiment
As shown in Figure 1, screw-rod structure film mouth end begins to be divided into successively six sections: film mouth section 1, homogenizing zone 2, transportation section 3, compression section 4, extruded segment 5, feeding section 6, this screw rod is Split type structure, adopt screw rod to connect between every section or adopt key to connect or adopt and be welded to connect, the axis of every section screw rod is straight line, and it is concentric to pass extruder barrel.
Film mouth section 1 structure is a conicity structure.
The surface of homogenizing zone 2 screw rods has projection, and the cross section of projection is trapezoidal.
Transportation section 3 screw surface are spirality spiral shell rib.
Compression section 4 screw surface have a projection.
The spiral shell rib structure of extruded segment 5 screw surface is spirality.
The spiral shell rib of feeding section 6 screw rods is annular protrusion, and this annular protrusion is concentric with screw rod.
This extruder screw rod structure provided by the invention, version is simple, makes simple, easy for installation.
The specific embodiment of the present invention does not consist of the restriction to the application's scope; every within the spirit and principle of the present invention design, any modification that one of skill in the art can make, be equal to and replace and improvement etc. all should be included within protection scope of the present invention.
Claims (7)
1. extruder screw rod structure, it is characterized in that, described screw-rod structure film mouth end begins to be divided into successively six sections: film mouth section, homogenizing zone, transportation section, compression section, extruded segment, feeding section, this screw rod is Split type structure, adopt screw rod to connect between every section or adopt key to connect or adopt and be welded to connect, the axis of every section screw rod is straight line, and it is concentric to pass extruder barrel.
2. extruder screw rod structure according to claim 1 is characterized in that, described film mouth segment structure is a conicity structure.
3. extruder screw rod structure according to claim 1 is characterized in that, the surface of described homogenizing zone screw rod has projection, and the cross section of projection is trapezoidal.
4. extruder screw rod structure according to claim 1 is characterized in that, described transportation section screw surface is spirality spiral shell rib.
5. extruder screw rod structure according to claim 1 is characterized in that, described compression section screw surface have a projection.
6. extruder screw rod structure according to claim 1 is characterized in that, the spiral shell rib structure of described extruded segment screw surface is spirality.
7. extruder screw rod structure according to claim 1 is characterized in that, the spiral shell rib of described feeding section screw rod is annular protrusion, and this annular protrusion is concentric with screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103972218A CN102896760A (en) | 2012-10-19 | 2012-10-19 | Extruder screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103972218A CN102896760A (en) | 2012-10-19 | 2012-10-19 | Extruder screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102896760A true CN102896760A (en) | 2013-01-30 |
Family
ID=47569392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103972218A Pending CN102896760A (en) | 2012-10-19 | 2012-10-19 | Extruder screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102896760A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4329612A1 (en) * | 1993-09-02 | 1995-03-09 | Werner & Pfleiderer | Screw element for a screw machine |
| US20080019212A1 (en) * | 2004-09-03 | 2008-01-24 | Peter Dietz | Extruder Screw, Extruder And Shaft-Hub Connection |
| CN201272019Y (en) * | 2008-07-15 | 2009-07-15 | 佛山市南海易乐工程塑料有限公司 | Extrusion screw rod structure of engineering plastics engineering plastics |
| CN201784158U (en) * | 2010-09-19 | 2011-04-06 | 余姚市绿岛橡塑机械设备有限公司 | High efficiency conical double-screw |
| CN202826364U (en) * | 2012-10-19 | 2013-03-27 | 无锡市百顺机械厂 | Screw rod structure for extruder |
-
2012
- 2012-10-19 CN CN2012103972218A patent/CN102896760A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4329612A1 (en) * | 1993-09-02 | 1995-03-09 | Werner & Pfleiderer | Screw element for a screw machine |
| US20080019212A1 (en) * | 2004-09-03 | 2008-01-24 | Peter Dietz | Extruder Screw, Extruder And Shaft-Hub Connection |
| CN201272019Y (en) * | 2008-07-15 | 2009-07-15 | 佛山市南海易乐工程塑料有限公司 | Extrusion screw rod structure of engineering plastics engineering plastics |
| CN201784158U (en) * | 2010-09-19 | 2011-04-06 | 余姚市绿岛橡塑机械设备有限公司 | High efficiency conical double-screw |
| CN202826364U (en) * | 2012-10-19 | 2013-03-27 | 无锡市百顺机械厂 | Screw rod structure for extruder |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20130130 |