CN200942588Y - Plastic extrusion machine - Google Patents
Plastic extrusion machine Download PDFInfo
- Publication number
- CN200942588Y CN200942588Y CNU2006200773655U CN200620077365U CN200942588Y CN 200942588 Y CN200942588 Y CN 200942588Y CN U2006200773655 U CNU2006200773655 U CN U2006200773655U CN 200620077365 U CN200620077365 U CN 200620077365U CN 200942588 Y CN200942588 Y CN 200942588Y
- Authority
- CN
- China
- Prior art keywords
- screw rod
- screw
- extruder
- mould
- feed hopper
- 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
-
- 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 discloses an extruder, comprising a feed hopper, a charging barrel, a screw, a power-driven unit, a heating apparatus and a mould. The said screw's thread pitch is gradually enlarged along the direction to the mould and the feed hopper. This extruder features the original and simple structure and low cost as well as offers a stable extrusion pressure. Therefore, the manufacturing cost is lowered, while the production efficiency is improved.
Description
Technical field
The utility model relates to a kind of plastic extruder, relates in particular to the screw rod plastic extruder.
Background technology
Plastics are indispensable a kind of important materials in the modern life, and plastics have been penetrated into the every field of people's daily life as the goods of raw material production.In being processed to the process of goods, plastics mainly comprise two links, the one, and the mixing of plastics and plasticizing, another is moulding.For the common way of the performance of improving plastics is the plastics of different cultivars and other materials, as: mineral powder, rubber, fiber, wood powder etc. are by certain prescription mixing plasticizing, and then are shaped to required goods.Screw extruder is the most frequently used a kind of mixed-forming equipment, for finishing the mixing plasticizing process of plastics, just require screw extruder that very strong shearing, dispersion, mixing ability are arranged, so that the raw material of variety classes, different components can disperse, mix, plastify by screw extruder, become material of uniformity all on macroscopic view and the microcosmic, make material have good serviceability.Equipment such as now existing single screw extrusion machine, double screw extruder, Reciprocating Pin Twin-Screw Extruder, multi-screw extruder, conical screw extruder.The shortcoming that above-mentioned screw extruder exists is: generally can only finish one that mixes in dispersion or two work of product molding respectively.For example: though traditional single screw extrusion machine can provide the extrusion pressure of higher stable, but its shearing dispersibility is relatively poor, because high shear can not be provided, therefore can not big caking materials be scattered, even on screw rod, increase pin, because there is not pin on the machine barrel, thus material is uniformly dispersed on macroscopic view, and can not on microcosmic, be uniformly dispersed.Though double screw extruder, Reciprocating Pin Twin-Screw Extruder, multi-screw extruder have very strong shearing dispersibility, but can not provide the extrusion pressure of higher stable, can not be used for product molding extrudes, so the production of plastic products need be finished in two steps, with shearing the strong equipment of dispersibility with mixing of materials, plasticizing, granulation, second step was used the single screw extrusion machine extrusion molding to the first step more then earlier.Do like this that not only technological process is long, energy consumption is high, and raw materials consumption is big.
Summary of the invention
The utility model provides a kind of plastic extruder, it is the improvement on the basis of original plastic extruder, designed the new construction of screw extruder pitch, this plastic extruder novel structure, simple, cost is low, the extrusion pressure of higher stable can be provided, both reduce production cost, improved production efficiency again.
The utility model is achieved by the following technical solution: plastic extruder, comprise feed hopper, barrel, screw rod, and electric device, heater and mould, the pitch of described screw rod is the trend that increases gradually by mould, feed hopper direction.
Described screw rod is a conical screw.
Described screw rod is single screw rod.
Described screw rod is a twin-screw.
Described screw rod is a multiscrew.
Screw pitch of the present utility model is taked the technical scheme that increases gradually to charging aperture by mould, screw rod provides the extrusion pressure of higher stable in the course of work to material, improved the extrusion pressure of double screw extruder, Reciprocating Pin Twin-Screw Extruder, multi-screw extruder, made the goods be easy to moulding.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment
Fig. 2 is the structural representation of the screw rod of the utility model embodiment 1 or 2
Fig. 3 is the cross sectional representation of the screw rod of the utility model embodiment 2
Sequence number among the figure: 1, feed hopper, 2, barrel, 3, screw rod, 4, electric device, 5, heater, 6, mould, 7, the bar core, 8, the spiral shell rib, 9, screw channel
The specific embodiment
With reference to accompanying drawing, embodiment one, a kind of plastic extruder, comprise feed hopper 1, barrel 2, screw rod 3,
With reference to accompanying drawing, embodiment one, and a kind of plastic extruder comprises feed hopper 1, barrel 2, screw rod 3, electric device 4, heater 5 and mould 6, and described screw rod is single screw rod, and the pitch of described screw rod is the trend that increases gradually by mould 6 to feed hopper 1 direction.
Embodiment two, a kind of plastic extruder, comprise feed hopper 1, barrel 2, screw rod 3, electric device 4, heater 5 and mould 6, described screw rod is a twin-screw, described two screw rods 3 are arranged in the barrel 2, screw rod is made up of the spiral shell rib 8 on bar core 7 and the bar core 7 respectively, the cross section of the bar core 7 of two screw rods is a hexagon, the spiral shell rib 8 of two screw rods is meshing with each other, adjacent two spiral shell ribs 8 form screw channel 9, the width of spiral shell rib is 8mm, and the screw channel of close mould is 30mm, and equidistantly increases progressively to feed hopper 1 direction with the width of 3mm.
The spiral shell core of screw rod of the present utility model can be designed as multiple structure, and spiral shell core cross section can be circle or triangle, polygons such as quadrangle, and the variation of pitch can be equidistant incremental variations, also can irregularly increase progressively, all within protection domain of the present utility model.
Claims (5)
1, plastic extruder, comprise feed hopper (1), barrel (2), screw rod (3), electric device (4), heater (5) and mould (6) is characterized in that: the pitch of described screw rod (3) is the trend that increases gradually by mould (6) to feed hopper (1) direction.
2, plastic extruder according to claim 1 is characterized in that: described screw rod (3) is a conical screw.
3, plastic extruder according to claim 1 and 2 is characterized in that: described screw rod (3) is single screw rod.
4, plastic extruder according to claim 1 and 2 is characterized in that: described screw rod (3) is a twin-screw.
5, plastic extruder according to claim 1 and 2 is characterized in that: described screw rod (3) is a multiscrew.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200773655U CN200942588Y (en) | 2006-09-18 | 2006-09-18 | Plastic extrusion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200773655U CN200942588Y (en) | 2006-09-18 | 2006-09-18 | Plastic extrusion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200942588Y true CN200942588Y (en) | 2007-09-05 |
Family
ID=38717214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200773655U Expired - Fee Related CN200942588Y (en) | 2006-09-18 | 2006-09-18 | Plastic extrusion machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200942588Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107775937A (en) * | 2017-11-21 | 2018-03-09 | 南京科森挤出装备有限公司 | Changeable Lead becomes groove and becomes rib combined type supercharging thread bush |
-
2006
- 2006-09-18 CN CNU2006200773655U patent/CN200942588Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107775937A (en) * | 2017-11-21 | 2018-03-09 | 南京科森挤出装备有限公司 | Changeable Lead becomes groove and becomes rib combined type supercharging thread bush |
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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: 20070905 Termination date: 20091019 |