CN2501676Y - Screw rod of extrusion machine - Google Patents
Screw rod of extrusion machine Download PDFInfo
- Publication number
- CN2501676Y CN2501676Y CN01258999U CN01258999U CN2501676Y CN 2501676 Y CN2501676 Y CN 2501676Y CN 01258999 U CN01258999 U CN 01258999U CN 01258999 U CN01258999 U CN 01258999U CN 2501676 Y CN2501676 Y CN 2501676Y
- Authority
- CN
- China
- Prior art keywords
- thread
- screw
- extruder
- screw rod
- 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
-
- 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
- B29C48/64—Screws with two or more threads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a screw of an extruder, which comprises a feeding section, a melting section and a homogenizing zone. The melting section is provided with a strip of accessory thread which gradually changes in equal distances, and the accessory thread is inconsistent with a diameter of the main thread, and the thread pitches of the accessory thread have equal distances, and a screw channel changes from deep to shallow. The screw of the extruder of the utility model overcomes the defects in existing technology and meets the requirements of high level and high added value of plastic products in world market and has the advantages of high plasticizing quality, stable extruding quantity and high production capacity, which can realize quantitative, constant-pressure and hi-speed extrusion.
Description
The utility model is about a kind of screw rod, more particularly about a kind of screw of plastic extruder.
Screw rod is the heart of extruder, and the quality of the plastic products of production and productivity ratio all directly depend on the stability of the temperature homogeneity of the melt that machine is extruded and pressure, extrusion capacity, and these parameters all directly depend on the structural behaviour with screw rod.External in order to strengthen the task performance of screw rod, develop the new screw of mixing sections such as being respectively equipped with divergence type, bypass type with respect to the plain edition screw rod.
A kind of new-type compound screw rod of setting up two kinds of different structure mixing sections on screw rod is simultaneously disclosed in Chinese patent CN-87210566, this kind screw rod is to have set up a divergence type mixing section of paying helicitic texture on the compression section, though this screw rod is than the melting effect of traditional screw rod, plasticizing quality and extrusion capacity etc. all are improved, but because the screw initial thread end of paying of the mixing section in the compression section is logical opening, this structure certainly will cause the liquid phase part that is melted material on whole compression section to mix mutually with the solid phase part, will produce the fracture phenomena of Solid Bed in the melting process like this, reduce and melt the physique amount, melting rate has also slowed down.
The purpose of this utility model is to overcome the deficiencies in the prior art, satisfy the domestic and international market to the top grade of plastic product, the needs of high added value, provide that a kind of plasticizing quality height, extrusion capacity are stable, production capacity is high, can realize quantitatively, level pressure and the extruder screw extruded at a high speed.
These and other objects of the present utility model will further describe and embody by following detailed description.
Extruder screw of the present utility model comprises feeding section, melt zone and homogenizing zone, and a deputy thread is arranged on melt zone, and deputy thread is equidistant gradual change, and is inconsistent with the main thread diameter, and deputy thread pitch equates that screw channel from depth to shallow.
Extruder screw of the present utility model has overcome the deficiency that prior art exists, satisfied the domestic and international market to the top grade of plastic product, the needs of high added value, plasticizing quality height, extrusion capacity are stable, production capacity is high, can realize quantitatively, level pressure and extruding at a high speed.
Below further specify the utility model by accompanying drawing and explanation thereof.
Fig. 1 is the schematic diagram of the utility model screw rod.
At Fig. 1, symbol 1 is represented screw rod, and symbol 2 is represented feeding section, and symbol 3 is represented melt zone, and symbol 4 is represented homogenizing zone, and symbol 5 is represented main thread, and symbol 6 is represented deputy thread.
In the utility model, extruder screw 1, comprise feeding section 2, melt zone 3 and homogenizing zone 4, the front end of extruder screw 1 is a homogenizing zone 4, and the centre is a melt zone 3, high order end is a feeding section 2, a deputy thread 6 is arranged on melt zone 4, and deputy thread is equidistant gradual change, and is inconsistent with the main thread diameter, deputy thread pitch equates that screw channel from depth to shallow.
In screw rod of the present utility model, melt zone is that the plastics that feeding section is sent here are carried out compacting and plasticizing, and the air of carrying secretly in the plastics is discharged to charge door, and this stage is for being become the rheid of molten condition by solid state.The utility model has increased a deputy thread, and this screw thread is equidistant gradual change, and promptly pitch equates, screw channel from depth to shallow, and is and inconsistent with the main thread diameter, makes and forms solid phase screw channel and liquid phase screw channel between the major-minor screw thread.
Claims (3)
1, a kind of extruder screw comprises feeding section, melt zone and homogenizing zone, it is characterized in that having on melt zone a deputy thread.
2, extruder screw as claimed in claim 1 is characterized in that deputy thread is equidistant gradual change, and is inconsistent with the main thread diameter.
3,, it is characterized in that deputy thread pitch equates that screw channel from depth to shallow as claim 1,2 described extruder screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01258999U CN2501676Y (en) | 2001-11-08 | 2001-11-08 | Screw rod of extrusion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01258999U CN2501676Y (en) | 2001-11-08 | 2001-11-08 | Screw rod of extrusion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2501676Y true CN2501676Y (en) | 2002-07-24 |
Family
ID=33667488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01258999U Expired - Fee Related CN2501676Y (en) | 2001-11-08 | 2001-11-08 | Screw rod of extrusion machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2501676Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106584806A (en) * | 2016-12-22 | 2017-04-26 | 无锡南方电工机械有限公司 | Divergence and convergence screw |
| CN107672142A (en) * | 2017-10-09 | 2018-02-09 | 无锡市长城电线电缆有限公司 | A kind of rubber connects sulphur unit extruder screw |
-
2001
- 2001-11-08 CN CN01258999U patent/CN2501676Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106584806A (en) * | 2016-12-22 | 2017-04-26 | 无锡南方电工机械有限公司 | Divergence and convergence screw |
| CN107672142A (en) * | 2017-10-09 | 2018-02-09 | 无锡市长城电线电缆有限公司 | A kind of rubber connects sulphur unit extruder screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20050422 Pledge (preservation): Preservation |
|
| PD01 | Discharge of preservation of patent |
Date of registration: 20061002 Pledge (preservation): Preservation |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020724 Termination date: 20091208 |