CN201645799U - Special screw rod for low-smoke and halogen-free material - Google Patents
Special screw rod for low-smoke and halogen-free material Download PDFInfo
- Publication number
- CN201645799U CN201645799U CN2010201770858U CN201020177085U CN201645799U CN 201645799 U CN201645799 U CN 201645799U CN 2010201770858 U CN2010201770858 U CN 2010201770858U CN 201020177085 U CN201020177085 U CN 201020177085U CN 201645799 U CN201645799 U CN 201645799U
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- Prior art keywords
- screw rod
- screw
- low
- free material
- section
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- 239000000463 material Substances 0.000 title claims abstract description 43
- 239000000779 smoke Substances 0.000 title claims abstract description 32
- 230000006835 compression Effects 0.000 claims description 19
- 238000007906 compression Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004904 shortening Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a special screw rod for a low-smoke and halogen-free material, which comprises a screw rod main body, wherein the screw rod main body is provided with a screw thread; the screw thread on the screw rod main body is divided into a charging section, a compressing section and a homogenizing section; the place where the end of the screw rod main body is near to the charging section is provided with a screw thread head which prevents the material from backwards flowing and playing a part in sealing; the screw pitch of the screw thread on the homogenizing section is less than screw pitch of the screw thread on the charging section and the compressing section; and the screw pitch of the screw thread on the charging section is equal to that on the compressing section. By shortening the screw pitch of the homogenizing section, the screw rod shortens the time that the low-smoke and halogen-free material is extruded from the compressing section to a mould, leads the extruded low-smoke and halogen-free material to be more compact, sufficient and even to guarantee the quality of a product, leads the screw pitch of the screw thread of the charging section to be equal to that of the compressing section, increases the fusing and transporting speed, improves the quality of a fusing body, has the advantages of stable extruding quantity, high production capacity and high extruding speed, and is suitable for transporting the low-smoke and halogen-free material.
Description
Technical field
The utility model relates to a kind of screw-rod structure, particularly be to be applied to screw-rod structure in the extruder that low-smoke halogen-free material carries.
Background technology
The screw rod of extruder is the strength member in the extruder, is made by the steel alloy of high-strength corrosion-resisting.The range of application of extruding machine 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 architectural characteristic energy of screw rod.
Existing screw flight design is divided into three sections, and it refers to that screw rod is made up of feeding section, compression section, three sections screw threads of homogenizing zone, a kind of screw rod that its extrusion relies on the form of screw thread to finish fully, and the pitch between its screw thread be setting equidistantly; And the screw rod of this structure is applied in when carrying out in the extruder low-smoke halogen-free material carried, because pitch equates to cause the low-smoke halogen-free material of fusing to mix inhomogeneous, and low-smoke halogen-free material is more of a specified duration to the time ratio of clamp-oning mould from the compression section, make the material leakiness of clamp-oning, reduced and melted the physique amount, also the slowed down speed of fusion and conveying is connected with machine barrel to be easy to generate material and backflow its poor sealing performance at thread head simultaneously.
The utility model content
The utility model purpose is to be, overcome the deficiency on the prior art, and provide that a kind of extrusion capacity is stable, good seal performance, production capacity is high and be adapted to the screw special for low-smoke halogen-free material that low-smoke halogen-free material is extruded at a high speed, prevents that material from backflowing, the speed that has improved fusion and extruded.
To achieve these goals, the utility model is to realize by the following technical solutions:
Screw special for low-smoke halogen-free material, comprise the screw rod body, described screw rod body is provided with screw thread, described screw thread is divided into feed zone, compression section and homogenizing zone on the screw rod body, it is characterized in that, preventing that material from backflowing, the thread head that seals near being provided with on the screw rod body end of feed zone, thread pitch is less than the thread pitch on described feed zone and the compression section on the described homogenizing zone, and the thread pitch on the described feed zone equates with thread pitch on the compression section; Be provided with the link that connects electric machine main shaft at described screw rod body one end, described link is arranged on the rear end of thread head, is provided with the installing hole that is installed in electric machine main shaft on described link.
Aforesaid screw special for low-smoke halogen-free material, wherein, the diameter of described screw rod body is 200mm.
The utility model is by dwindling the pitch of homogenizing zone, shortened low-smoke halogen-free material from the compression section to the time of clamp-oning mould, make the low-smoke halogen-free material of clamp-oning more closely knit, abundant, even, to guarantee quality of item; Simultaneously, be provided with thread head in screw rod body end near feed zone, prevented that material from backflowing from barrel, increase sealing property, and feed zone is set to equate with the thread pitch of compression section, increased the speed of fusion and conveying, improved and melted the physique amount, it has, and extrusion capacity is stable, good airproof performance, production capacity is high and advantage that extrude at a high speed.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.
With reference to figure 1, the utility model screw special for low-smoke halogen-free material comprises screw rod body 10, has made screw thread 11 on described screw rod body 10, and this screw thread 11 can directly process on screw rod body 10.Described screw thread 11 is divided into feed zone 13, compression section 14 and homogenizing zone 15 on screw rod body 10; Described feed zone 13, compression section 14 and homogenizing zone 15 are pressed the material operation on described screw rod body 10 direction is feed zone 13, compression section 14 and homogenizing zone 15 according to this; Preventing that near having made on the screw rod body 10 of feed zone 13 material from backflowing, the thread head 12 that seals is provided in the machine barrel by thread head 12, has increased the sealing property of itself and machine barrel coupling part.
At an end of screw rod body 10 is that the link 20 that connects electric machine main shaft is made in the rear end of described thread head 12, make the installing hole 21 that is installed in electric machine main shaft by processing on this link 20, be convenient to the installation of screw rod body 10 and motor, by the rotation of driven by motor screw rod body 10.
It should be noted that, thread pitch on the above-mentioned homogenizing zone 15 is less than the thread pitch on described feed zone 13 and the compression section 14, be that screw thread is arranged comparatively dense, shortened low-smoke halogen-free material from the compression section 14 to the time of clamp-oning mould, make the low-smoke halogen-free material of clamp-oning more closely knit, abundant and even, to guarantee quality of item.
Thread pitch on the described feed zone 13 equates with thread pitch on the compression section 14, has increased the speed of fusion and conveying, has improved and has melted the physique amount.
In this enforcement, the diameter of described screw rod body 10 is 200mm, makes low-smoke halogen-free material time of staying in barrel moderate, and fusion is more abundant, even, to guarantee quality of item, is adapted to the use of small-sized extruder.
When the utility model uses, low-smoke halogen-free material advances the feed zone 13 that feed opening enters screw rod body 10 from machine barrel, low-smoke halogen-free material is advanced by the effect promotion low-smoke halogen-free material of screw flight helical angle, when low-smoke halogen-free material contacts the machine tube inner wall of heating, on inwall, form melt film, spiral shell rib by screw rod scrapes, and enters screw channel.
Then, the low-smoke halogen-free material of fusion enters compression section 14 extrusion of the air between the low-smoke halogen-free material is fed back into charge door, and with the material compacting.At last, the low-smoke halogen-free material of fusion is clamp-oned in the mould through homogenizing zone 15 homogenizing.
Based on above-mentioned, the utility model is by dwindling the pitch of homogenizing zone 15 on the screw rod body 10, shortened low-smoke halogen-free material from the compression section 14 to the time of clamp-oning mould, make the low-smoke halogen-free material of clamp-oning more closely knit, abundant, even, to guarantee quality of item; Simultaneously, be provided with thread head 12, prevented that material from backflowing from barrel, increase sealing property in screw rod body end near feed zone 13.
And the thread pitch of feed zone 13 with compression section 14 equated, improved the speed of fusion and conveying, improved and melted the physique amount, it has the advantage that extrusion capacity is stable, production capacity is high and extrude at a high speed, is adapted in the small-sized extruder of low-smoke halogen-free material conveying.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. screw special for low-smoke halogen-free material, comprise the screw rod body, described screw rod body is provided with screw thread, described screw thread is divided into feed zone on the screw rod body, compression section and homogenizing zone, it is characterized in that, preventing that near being provided with on the screw rod body end of feed zone material from backflowing, the thread head that seals, thread pitch is less than the thread pitch on described feed zone and the compression section on the described homogenizing zone, thread pitch on the described feed zone equates with thread pitch on the compression section, described screw rod body one end is provided with the link that connects electric machine main shaft, and described link is arranged on the rear end of thread head, is provided with the installing hole that is installed in electric machine main shaft on described link.
2. screw special for low-smoke halogen-free material according to claim 1 is characterized in that, the diameter of described screw rod body is 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201770858U CN201645799U (en) | 2010-04-27 | 2010-04-27 | Special screw rod for low-smoke and halogen-free material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201770858U CN201645799U (en) | 2010-04-27 | 2010-04-27 | Special screw rod for low-smoke and halogen-free material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201645799U true CN201645799U (en) | 2010-11-24 |
Family
ID=43111017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201770858U Expired - Fee Related CN201645799U (en) | 2010-04-27 | 2010-04-27 | Special screw rod for low-smoke and halogen-free material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201645799U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898411A (en) * | 2010-04-27 | 2010-12-01 | 昆山科信橡塑机械有限公司 | Screw special for low-smoke halogen-free material |
| CN107348548A (en) * | 2017-07-21 | 2017-11-17 | 贵州省贝真食业有限公司 | A kind of plain meat process equipment bolt special |
-
2010
- 2010-04-27 CN CN2010201770858U patent/CN201645799U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898411A (en) * | 2010-04-27 | 2010-12-01 | 昆山科信橡塑机械有限公司 | Screw special for low-smoke halogen-free material |
| CN107348548A (en) * | 2017-07-21 | 2017-11-17 | 贵州省贝真食业有限公司 | A kind of plain meat process equipment bolt special |
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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: 20101124 Termination date: 20130427 |