CN101890802B - Semicircular-edge screw for plastic extruder - Google Patents
Semicircular-edge screw for plastic extruder Download PDFInfo
- Publication number
- CN101890802B CN101890802B CN2010102507686A CN201010250768A CN101890802B CN 101890802 B CN101890802 B CN 101890802B CN 2010102507686 A CN2010102507686 A CN 2010102507686A CN 201010250768 A CN201010250768 A CN 201010250768A CN 101890802 B CN101890802 B CN 101890802B
- Authority
- 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.)
- Expired - Fee Related
Links
Images
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
Landscapes
- 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 divergence type, and its design feature is that whole screw rod is comprised of two spiral shell ribs, can be comprised of front spiral shell rib and the rear spiral shell rib that helical pitch does not wait, and also can be comprised of main spiral shell rib and additional spiral shell rib.Although separating screw rod improves at 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 larger, the better screw rod of plasticizing effect has just become day by day urgent task.
Summary of the invention
The objective of the invention is to yield poorly for existing separating screw rod, the problem that plasticizing effect is poor designs the semicircular-edge screw for plastic extruder that a kind of output is high, 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; Smoothly semicircular structure is crossed for ease of material in the normal section of described secondary spiral shell rib 3.
Described main spiral shell rib 2 is comprised 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 in whole process by changing the spiral groover rot diameter, is conducive to flowing of material, has greatly improved production efficiency.
The present invention adopts circular secondary spiral shell rib, thereby so that material is more easily crossed in extrusion, 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 ensures simultaneously good plasticizing quality.
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 at screw rod body 1 of corresponding two main spiral shell ribs 2, and changing helical pitch restarts, the spiral groover rot diameter of described screw rod body 15 is grading structure from feed end 4 to discharge end, take φ 150 screw rods as 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; Smoothly semicircular structure is 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 comprised of the main spiral shell rib of three sections different leads, and 5 is grading structure from feed end 4 to discharge end, wherein the helical pitch of first paragraph is minimum, the helical pitch of final stage is maximum, and helical pitch difference each other is the 35-115 millimeter, and 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 all prior art that maybe can adopt 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 grading structure from feed end (4) to discharge end (5); Smoothly semicircular structure is 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 comprised 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 CN101890802A (en) | 2010-11-24 |
| CN101890802B true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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 |
|---|
| 于健，卜秋祥.双主副螺纹冷喂料橡胶挤出机.《橡胶工业》.2002,第49卷(第6期),356-359. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101890802A (en) | 2010-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101890802B (en) | Semicircular-edge screw for plastic extruder | |
| CN104290309B (en) | Extruding screw for single screw extruder | |
| CN102490340B (en) | Conical twin-screw | |
| CN201317096Y (en) | PE plastic pipe high-yield extrusion screw | |
| CN201761059U (en) | Separate type screw for plastic extruder | |
| CN202180604U (en) | Combined screw | |
| CN205929404U (en) | A extrude screw rod for boring a duplex section of thick bamboo | |
| CN2860818Y (en) | Double end separating screw rod | |
| CN202623243U (en) | Plastic extruding machine with conical screw | |
| CN203527836U (en) | Extruder with bent runner nose | |
| CN202727310U (en) | Different-diameter extrusion screw of cold-feed exhausting extruder | |
| CN204526092U (en) | The special two sections of BM formula screw rods of electric wire extruder | |
| CN203254637U (en) | 65 mm diameter plastic extrusion single screw | |
| CN105563791A (en) | Variable-diameter extrusion die | |
| CN203637144U (en) | Separation type extrusion screw | |
| CN202491414U (en) | Cone double screw | |
| CN202144109U (en) | Screw rod for extruding machine | |
| CN206678372U (en) | Segmentation fluting machine barrel | |
| CN203125926U (en) | Novel thermal feeding extrusion machine screw rod | |
| CN203527853U (en) | Screw | |
| CN215151609U (en) | Special screw rod for PE high-efficiency energy-saving solid-wall pipe extrusion | |
| CN202097925U (en) | Extruder | |
| CN203427315U (en) | Extrusion screw | |
| CN205272556U (en) | Dysmorphism screw rod | |
| CN203665916U (en) | Single plastic extrusion screw |
Legal Events
| 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 |
Granted publication date: 20130130 Termination date: 20210811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |