CN101890802A - Semicircular-edge screw for plastic extruder - Google Patents
Semicircular-edge screw for plastic extruder Download PDFInfo
- Publication number
- CN101890802A CN101890802A CN2010102507686A CN201010250768A CN101890802A CN 101890802 A CN101890802 A CN 101890802A CN 2010102507686 A CN2010102507686 A CN 2010102507686A CN 201010250768 A CN201010250768 A CN 201010250768A CN 101890802 A CN101890802 A CN 101890802A
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- CN
- China
- Prior art keywords
- spiral shell
- screw
- semicircular
- screw rod
- rod body
- 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
-
- 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
- B29C48/65—Screws with two or more threads neighbouring threads or channels having different configurations, e.g. one thread being lower than its neighbouring thread
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a semicircular-edge screw for a plastic extruder, which comprises a screw body (1), wherein two identical primary screw edges (2) and two identical secondary screw edges (3) are arranged at the overall length of the screw body (1); the two secondary screw edges (3) and the two primary screw edges (2) corresponding to the two secondary screw edges (3) are connected and closed at the discharging end (5) of the screw body (1); the semicircular-edge screw is characterized in that the bottom diameter of the spiral groove of the screw body (1) is gradually changed from an feeding end (4) to the discharging end (5); and the normal section of the secondary screw edges (3) are in a semi-circular structure which ensures that the materials can be overturned more smoothly.
Description
Technical field
The present invention relates to a kind of extruder parts, especially a kind of PVC screw for extruder, specifically a kind of semicircular-edge screw for plastic extruder.
Background technology
As everyone knows, the screw rod of PVC extruder adopts following two kinds of structures usually: the one, and common syllogic (being blanking section+compression section+metering section); Another is a divergence type, and its design feature is that whole screw rod is made up of two spiral shell ribs, can be made up of preceding spiral shell rib and back spiral shell rib that helical pitch does not wait, also can be made up of main spiral shell rib and additional spiral shell rib.Although the divergence type screw rod improves on plasticizing quality and extrusion capacity than three-stage screw, but still can't satisfy the requirement that the user improves day by day on output, develop therefore that extrusion capacity is bigger, the better screw rod of plasticizing effect has just become urgent task day by day.
Summary of the invention
The objective of the invention is to yield poorly at existing divergence type screw rod, the problem of plasticizing effect difference designs a kind of output height, semicircular-edge screw for plastic extruder that plasticizing effect is good.。
Technical scheme of the present invention is:
A kind of semicircular-edge screw for plastic extruder, comprise screw rod body 1, described screw rod body 1 total length is provided with two secondary spiral shell ribs 3 that identical main spiral shell rib 2 is identical with two, described two secondary spiral shell ribs 3 and the discharge end 5 handing-over sealings at screw rod body 1 of corresponding two main spiral shell ribs 2, the spiral groover rot diameter that it is characterized in that described screw rod body 15 are grading structure from feed end 4 to discharge end; Semicircular structure is smoothly crossed for ease of material in the normal section of described secondary spiral shell rib 3.
Described main spiral shell rib 2 is made up of the main spiral shell rib of three sections different leads, and 5 is grading structure from feed end 4 to discharge end.
Beneficial effect of the present invention:
The present invention makes it to realize gradual change on whole process by changing the spiral groover rot diameter, helps flowing of material, has improved production efficiency greatly.
The present invention adopts circular secondary spiral shell rib, thereby makes material easier crossing in extrusion, and flowing of material is more smooth and easy.
Screw rod of the present invention is under equal rotating speed, and output can improve more than 20%, also guarantees to have good plasticizing quality simultaneously.
Description of drawings
Fig. 1 is the deployed configuration schematic diagram of screw rod of the present invention.
Fig. 2 is the E-E cutaway view of Fig. 1.
Fig. 3 is the F-F cutaway view of Fig. 1.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As Figure 1-3.
A kind of semicircular-edge screw for plastic extruder, comprise screw rod body 1, described screw rod body 1 total length is provided with two secondary spiral shell ribs 3 that identical main spiral shell rib 2 is identical with two, the normal cross section schematic diagram of main spiral shell rib 2 and secondary spiral shell rib 3 as shown in Figure 3, described two secondary spiral shell ribs 3 and the discharge end 5 handing-over sealings of corresponding two main spiral shell ribs 2 at screw rod body 1, and changing helical pitch restarts, the spiral groover rot diameter of described screw rod body 15 is a grading structure from feed end 4 to discharge end, with φ 150 screw rods is example, the spiral groover rot diameter of feed end 4 is φ 100-130, and is φ 105-135 to the spiral groover rot diameter of discharge end; Semicircular structure is smoothly crossed for ease of material in the normal section of described secondary spiral shell rib 3, as shown in Figure 2.Described main spiral shell rib 2 is made up of the main spiral shell rib of three sections different leads, and 5 is grading structure from feed end 4 to discharge end, first section helical pitch minimum wherein, the helical pitch maximum of final stage, helical pitch difference each other is the 35-115 millimeter, three helical pitches are respectively L1=135-170mm among Fig. 1, L2=170-205mm, L3=255-290mm, with the time simultaneously, the helical pitch of secondary spiral shell rib 3 is also done identical variation.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (2)
1. semicircular-edge screw for plastic extruder, comprise screw rod body (1), described screw rod body (1) total length is provided with two secondary spiral shell ribs (3) that identical main spiral shell rib (2) is identical with two, described two secondary spiral shell ribs (3) and discharge end (5) the handing-over sealing in screw rod body (1) of corresponding two main spiral shell ribs (2) is characterized in that the spiral groover rot diameter of described screw rod body (1) is a grading structure from feed end (4) to discharge end (5); Semicircular structure is smoothly crossed for ease of material in the normal section of described secondary spiral shell rib (3).
2. semicircular-edge screw for plastic extruder according to claim 1 is characterized in that described main spiral shell rib (2) is made up of the main spiral shell rib of three sections different leads, and is grading structure from feed end (4) to discharge end (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102507686A CN101890802B (en) | 2010-03-25 | 2010-08-11 | Semicircular-edge screw for plastic extruder |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020140876 | 2010-03-25 | ||
| CN201020140876.3 | 2010-03-25 | ||
| CN2010102507686A CN101890802B (en) | 2010-03-25 | 2010-08-11 | Semicircular-edge screw for plastic extruder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101890802A true CN101890802A (en) | 2010-11-24 |
| CN101890802B CN101890802B (en) | 2013-01-30 |
Family
ID=43100215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102507686A Expired - Fee Related CN101890802B (en) | 2010-03-25 | 2010-08-11 | Semicircular-edge screw for plastic extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101890802B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113370489A (en) * | 2021-07-12 | 2021-09-10 | 苏州金韦尔机械有限公司 | Screw extruder with water-rotating cavity |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059872U (en) * | 1989-10-25 | 1990-08-01 | 沈阳市食品酿造机械厂沈阳化工学院 | Rubber desulfurization extruder |
| US6139179A (en) * | 1999-09-03 | 2000-10-31 | Davis-Standard Corporation | Extruder screw having multi-channeled barrier section |
| WO2005065096A2 (en) * | 2003-12-24 | 2005-07-21 | Xaloy, Inc. | Apparatus for plasticating thermoplastics |
| CN2860818Y (en) * | 2005-10-31 | 2007-01-24 | 上海申威达机械有限公司 | Double end separating screw rod |
-
2010
- 2010-08-11 CN CN2010102507686A patent/CN101890802B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059872U (en) * | 1989-10-25 | 1990-08-01 | 沈阳市食品酿造机械厂沈阳化工学院 | Rubber desulfurization extruder |
| US6139179A (en) * | 1999-09-03 | 2000-10-31 | Davis-Standard Corporation | Extruder screw having multi-channeled barrier section |
| WO2005065096A2 (en) * | 2003-12-24 | 2005-07-21 | Xaloy, Inc. | Apparatus for plasticating thermoplastics |
| CN2860818Y (en) * | 2005-10-31 | 2007-01-24 | 上海申威达机械有限公司 | Double end separating screw rod |
Non-Patent Citations (1)
| Title |
|---|
| 《橡胶工业》 20020630 于健，卜秋祥 双主副螺纹冷喂料橡胶挤出机 356-359 1,2 第49卷, 第6期 2 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113370489A (en) * | 2021-07-12 | 2021-09-10 | 苏州金韦尔机械有限公司 | Screw extruder with water-rotating cavity |
| CN113370489B (en) * | 2021-07-12 | 2022-03-04 | 苏州金韦尔机械有限公司 | Screw extruder with water-rotating cavity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101890802B (en) | 2013-01-30 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20130130 Termination date: 20210811 |