CN203637145U - Disperse cooling screw of single screw extruder - Google Patents
Disperse cooling screw of single screw extruder Download PDFInfo
- Publication number
- CN203637145U CN203637145U CN201320706466.4U CN201320706466U CN203637145U CN 203637145 U CN203637145 U CN 203637145U CN 201320706466 U CN201320706466 U CN 201320706466U CN 203637145 U CN203637145 U CN 203637145U
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- CN
- China
- Prior art keywords
- screw
- screw rod
- rod body
- model
- utility
- 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
- B29C48/535—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 utility model provides a disperse cooling screw of a single screw extruder. The screw comprises a screw body which is provided with a multipoint and multi-sectional thread, and the starting position of the thread rotates a certain angle from space to space; the front and back threads are staggered and have a superposed area for a certain distance; a mixing area is arranged at the tail end of the screw body; and a plurality of metal sheets are formed on the screw body in the mixing area. The screw provided by the utility model has the beneficial effects that the temperature of melted materials (comprising a foamer) in the extruder cylinder can be more accurately controlled, and meanwhile, the melted raw materials and the foamer are more uniformly mixed, and finally, the quality stability of the produced plastic products is higher.
Description
Technical field
The utility model belongs to mechanical field, especially relates to a kind of single screw extrusion machine and disperses cooling type screw rod.
Background technology
In existing technology, the raw material of melting and blowing agent enter in extruder cylinder of single screw extruder after preliminary mixing, in single screw extrusion machine, again carry out fully mixing and suitably cooling, meet and be extruded machine after certain condition and extrude and enter static mixer, then by generating required plastic products after mould molding.As shown in Figure 1, the raw material (containing blowing agent) of melting enters in extruder barrel, under the effect of screw spiral trough thrust, move forward, because the temperature of extruder barrel and screw rod body 1 is lower than the temperature of the raw material of melting, it is low that material in helicla flute just can form surface temperature very soon, the state that core temperature is high, along with material is extruded forward, the temperature of material core is the temperature of projecting environment all the time, be unfavorable for like this heat exchange of material, also do not reach simultaneously and allow raw material and the well-mixed effect of blowing agent of melting.For addressing this problem, can be at interval of one section of mixing district 4 of certain distance processing on screw rod body 1, when material is when the mixing district 4, original shape will be broken up, and originally the material in core will appear incorporating mill cylinder or screw rod body 1 carries out heat exchange.But the method also can cause another one problem, when in the mixing district 4 of material process, partial material can reflux, can consume like this part thrust of screw rod body 1, affect the effect of extruding of extruder, thus mixing district 4 be unfit to do too much can not be oversize, but mixing district 4 can make again raw material and the blowing agent incomplete mixing of melting very little, material can not carry out enough heat exchanges simultaneously, finally causes producing qualified plastic products.
Utility model content
The purpose of this utility model is to provide a kind of single screw extrusion machine and disperses cooling type screw rod, simple in structure, production efficiency is high, can control more accurately the temperature of the raw material (containing blowing agent) of melting in extruder barrel, what also can make that the raw material of melting and blowing agent mix is more even simultaneously, finally makes the quality stability of the plastic products of producing better.
The technical solution of the utility model is: a kind of single screw extrusion machine disperses cooling type screw rod, comprises screw rod body, is provided with the screw thread of bull multistage on described screw rod body, and the original position of described screw thread rotates a certain angle every certain distance; The screw thread that described front and back are two sections forms interlaced shape, and has the overlapping region of certain distance; The end of described screw rod body is provided with mixing district; On screw rod body in described mixing district, be provided with some sheet metals.
Advantage and the good effect that the utlity model has are: owing to adopting technique scheme, can control more accurately the temperature of the raw material (containing blowing agent) of melting in extruder barrel, what also can make that the raw material of melting and blowing agent mix is more even simultaneously, finally makes the quality stability of the plastic products of producing better.
Brief description of the drawings
Fig. 1 is existing single screw-rod structure schematic diagram.
Fig. 2 is structural representation of the present utility model.
In figure:
1, screw rod body 2, screw thread 3, overlapping region 4, mixing district 5, sheet metal
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is elaborated.
As shown in Figure 2, a kind of single screw extrusion machine of the utility model disperses cooling type screw rod, comprises screw rod body 1, is provided with the screw thread 2 of bull multistage on described screw rod body 1, and the original position of described screw thread 2 rotates a certain angle every certain distance; The screw thread 2 that described front and back are two sections forms interlaced shape, and has the overlapping region 3 of certain distance; The end of described screw rod body 1 is provided with mixing district 4; On described mixing district 4 inner screw bodies 1, be provided with some sheet metals 5.
The course of work of this example: when the raw material (containing blowing agent) of melting enters in extruder barrel, under the effect of helicla flute thrust, move forward, after a segment distance, just can enter into the helicla flute of next section, because two sections of front and back helicla flute is interlaced, 2 numbers of pitch and screw thread are all consistent, the raw material of melting (containing blowing agent) by the last period helicla flute after entering, do not have too many obstruction in one section of spiral fluted process, so the thrust of screw rod body 1 is not had to impact clearly.But the shape of the raw material of melting in this process (containing blowing agent) will be broken up, and the high-temperature material of core can appear incorporating mill cylinder or screw rod body 1 carries out heat exchange.Because the method can not brought negative effect to system, so the hop count of screw thread 2 can increase according to demand under the prerequisite that meets processing request, so just, the heat exchange effect that has improved fused raw material (containing blowing agent) and machine barrel and screw rod body 1, makes material be easy to be controlled in temperature required scope.Raw material and the blowing agent of interlaced helicla flute to melting also has certain mixing effect, but in order to make its mixing more even, the technical program has been processed one section of mixing district 4 at screw rod body 1 afterbody, can ensure that like this material of melting and blowing agent are mixed fully in the time being extruded.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model application range, within all should still belonging to patent covering scope of the present utility model.
Claims (1)
1. a single screw extrusion machine disperses cooling type screw rod, comprise screw rod body (1), it is characterized in that: on described screw rod body (1), be provided with the screw thread (2) of bull multistage, the original position of described screw thread (2) rotates a certain angle every certain distance; The screw thread (2) that described front and back are two sections forms interlaced shape, and has the overlapping region (3) of certain distance; The end of described screw rod body (1) is provided with mixing district (4); On screw rod body (1) in described mixing district (4), be provided with some sheet metals (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320706466.4U CN203637145U (en) | 2013-11-08 | 2013-11-08 | Disperse cooling screw of single screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320706466.4U CN203637145U (en) | 2013-11-08 | 2013-11-08 | Disperse cooling screw of single screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203637145U true CN203637145U (en) | 2014-06-11 |
Family
ID=50868422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320706466.4U Expired - Fee Related CN203637145U (en) | 2013-11-08 | 2013-11-08 | Disperse cooling screw of single screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203637145U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527027A (en) * | 2014-12-08 | 2015-04-22 | 张家港市兰航机械有限公司 | Extrusion screw in PP foam sheet extruder mixing device |
| CN109762200A (en) * | 2017-11-09 | 2019-05-17 | 四川大学 | Functionality can send out/send out polystyrene bead and preparation method thereof |
-
2013
- 2013-11-08 CN CN201320706466.4U patent/CN203637145U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527027A (en) * | 2014-12-08 | 2015-04-22 | 张家港市兰航机械有限公司 | Extrusion screw in PP foam sheet extruder mixing device |
| CN109762200A (en) * | 2017-11-09 | 2019-05-17 | 四川大学 | Functionality can send out/send out polystyrene bead and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 300350 Jinnan District, Tianjin Town, the town of eight industrial park Patentee after: Tianjin Tiande rubber machinery Limited by Share Ltd Address before: Eight in the town Industrial Park 300350 Tianjin District of Jinnan city (Tianjin Tiande rubber and Plastic Machinery Co. Ltd.) Patentee before: Tianjin Tian De rubber and plastics machine company limited |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20171108 |