CN202826364U - Screw rod structure for extruder - Google Patents
Screw rod structure for extruder Download PDFInfo
- Publication number
- CN202826364U CN202826364U CN2012205344717U CN201220534471U CN202826364U CN 202826364 U CN202826364 U CN 202826364U CN 2012205344717 U CN2012205344717 U CN 2012205344717U CN 201220534471 U CN201220534471 U CN 201220534471U CN 202826364 U CN202826364 U CN 202826364U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- section
- extruder
- rod structure
- 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.)
- Expired - Fee Related
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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
- B29C48/67—Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a screw rod structure for an extruder, wherein the screw rod structure is sequentially divided into six sections, namely, a die orifice section, a homogenizing section, a conveying section, a compressing section, an extruding section and a charging section from a die orifice end; the screw rod is of a split structure, and the sections are connected with each other by virtue of the screw rod or keys or welding; and the central axis of the screw rod of each section is a straight line and concentrically penetrates through the machine barrel of the extruder. The screw rod structure for the extruder provided by the utility model is of a split structure, and each section of the structure is different in structural form and suitable for different requirements on each section during an extruding process, thus improving the product quality; and moreover, the screw rod structure for the extruder is simple in structural form, simple to manufacture and convenient to install.
Description
Technical field
The utility model relates to a kind of extruder screw rod structure.
Background technology
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, it is frequent to avoid changing screw rod, is conducive to enhance productivity.
The utility model content
In order to overcome above problem, the utility model provides a kind of extruder screw rod structure, and 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, the technical scheme that the utility model provides is as follows: a kind of extruder screw rod structure, described screw-rod structure die orifice end begins to be divided into successively six sections: die orifice 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 die orifice segment structure is a conical 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 utility model 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 the utility model extruder screw rod structure overall structure schematic diagram;
1-die orifice 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 die orifice end begins to be divided into successively six sections: die orifice 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.
Die orifice section 1 structure is a conical 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 that the utility model provides, version is simple, makes simple, easy for installation.
The specific embodiment described in the utility model does not consist of the restriction to the application's scope; every within the spirit and principle of the utility model 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 the protection domain of the present utility model.
Claims (7)
1. extruder screw rod structure, it is characterized in that, described screw-rod structure die orifice end begins to be divided into successively six sections: die orifice 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 die orifice segment structure is a conical 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 |
|---|---|---|---|
| CN2012205344717U CN202826364U (en) | 2012-10-19 | 2012-10-19 | Screw rod structure for extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205344717U CN202826364U (en) | 2012-10-19 | 2012-10-19 | Screw rod structure for extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202826364U true CN202826364U (en) | 2013-03-27 |
Family
ID=47938150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205344717U Expired - Fee Related CN202826364U (en) | 2012-10-19 | 2012-10-19 | Screw rod structure for extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202826364U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896760A (en) * | 2012-10-19 | 2013-01-30 | 无锡市百顺机械厂 | Extruder screw |
| CN104108164A (en) * | 2013-04-17 | 2014-10-22 | 无锡市长嵘塑料机械有限公司 | Novel two-sectional injection moulding machine screw |
-
2012
- 2012-10-19 CN CN2012205344717U patent/CN202826364U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896760A (en) * | 2012-10-19 | 2013-01-30 | 无锡市百顺机械厂 | Extruder screw |
| CN104108164A (en) * | 2013-04-17 | 2014-10-22 | 无锡市长嵘塑料机械有限公司 | Novel two-sectional injection moulding machine screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131019 |