CN102886889A - Screw of rubber extruding machine - Google Patents
Screw of rubber extruding machine Download PDFInfo
- Publication number
- CN102886889A CN102886889A CN2012104483473A CN201210448347A CN102886889A CN 102886889 A CN102886889 A CN 102886889A CN 2012104483473 A CN2012104483473 A CN 2012104483473A CN 201210448347 A CN201210448347 A CN 201210448347A CN 102886889 A CN102886889 A CN 102886889A
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- CN
- China
- Prior art keywords
- screw
- screw rod
- extruding machine
- rod body
- rubber
- 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
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- 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
- B29C48/56—Screws having grooves or cavities other than the thread or the channel
Abstract
The invention provides a screw of a rubber extruding machine. The screw of the rubber extruding machine comprises a screw body; a transmission gear linked to a driving device is arranged at the tail end of the screw body and is integrated with the screw body; a screw sleeve is arranged outside the screw body in a sleeving way; screw slots among threads on the screw body are formed to be rubber guiding grooves. The screw of the rubber extruding machine is characterized in that the screw body comprises a material feeding section and a compressing section; the compressing section is a regular tapered rod body with the taper of 0.5 to 2 degrees; openings are formed on the threads on the spiral body at the material feeding section; and the internal wall of the screw sleeve is provided with a tapered barrel structure which is in match with the screw body. The whole screw of rubber extruding machine disclosed by the invention is structured as the regular tapered rod body, the compression ratio of the screw reaches 8:1 under the condition that large slenderness ratio is remained, therefore, the strength of the whole screw is improved, the screw is hardly broken during being produced and used, and the insulation compactness of the extruded rubber and the insulation performance of the rubber are improved; and the screw of the rubber extruding machine is economic and practical, and is applicable to cable manufacturers of various scales.
Description
Technical field
The present invention relates to the extruder equipment of cabtyre cable, specifically a kind of rubber extruding machine screw rod of high compression ratio.
Background technology
The extruder equipment of producing now cabtyre cable is Rubber Extruder, the screw rod index of rubber extruding machine has draw ratio, compression ratio etc., compression ratio refers to the geometrical compression ratio of screw rod, is the ratio of first last screw channel volume of screw channel volume and extruding zone of screw rod feeding section.The compression ratio purpose is that extruded material can fully plastify, compacting in order to make, and plays vital effect for the compaction rate of extruding insulation, can greatly improve the electric property of cable insulation such as disruptive field intensity etc.The ordinary rubber extruder is because the coefficient of friction of elastomeric material is larger, and the compression ratio majority is controlled between 2:1 ~ 3:1.If will improve again the screw compression ratio, improve compression ratio by existing conventional method, screw rod screw rod root when producing easily fractures.This just extrudes manufacture view to highly dense solidity performance rubber insulation and has gone out a difficult problem.
At present, conventional rubber extruding machine screw rod all is the dark equidistant or equidistant dark bottom of thread back taper screw rods that do not wait such as employing, but in use, the bulk strength of screw rod is lower, the easy folding section phenomenon that occurs during production, and service life is short.
Summary of the invention
The present invention be directed to the defective that prior art mesohigh contracting is lower than screw strength, service life is short, provide a kind of simple in structure, intensity is high, the rubber extruding machine screw rod of long service life, high compression ratio.
For achieving the above object, the present invention is by the following technical solutions: a kind of rubber extruding machine screw rod, comprise the screw rod body, screw rod body tail end be provided be integrated with it and with the travelling gear of drive unit interlock, the outer cover of screw rod body is equipped with screw sleeve, the screw channel on the screw rod body between each screw thread consists of leads the glue groove, it is characterized in that, described screw rod body comprises feed zone and compression section, and the compression section is positive cone-shaped rod body, and its tapering is the 0.5-2 degree; Be provided with opening on the screw thread on the screw rod body of described feed zone; The inwall of described screw sleeve is the conically shaped structure that is complementary with the screw rod body.
Be symmetrical arranged two openings along even circumferential on each screw thread of feed zone.
The degree of depth of the opening on the feed zone screw thread is 10mm, and width is 20mm.
Feed zone in the screw rod body and the Length Ratio of compression section are 1:4.
Compare with traditional rubber extruding machine screw rod, this rubber extruding machine screw rod disclosed in this invention is whole positive cone-shaped rod body, in the situation that guarantee that big L/D ratio is constant, so that the compression ratio of screw rod reaches the bulk strength that 8:1 has improved screw rod, guarantee screw rod frangibility not when production and application, improve and extrude rubber covered packing and rubber covered performance, economical and practical, the cable manufacturer that is applicable to various scales uses.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the structural representation after screw rod among the present invention and the sleeve combination.
Among the figure: travelling gear 1, screw rod body 2, screw thread 3, opening 4 is led glue groove 5, screw sleeve 6, feed zone A, compression section B.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Referring to accompanying drawing 1, disclosed in this invention is a kind of rubber extruding machine screw rod, comprises screw rod body 2, and the leading portion of this screw rod body 2 is optical axis, and back segment is to be threaded 3 screw rod.Screw rod body 2 tail ends be provided be integrated with it and with the travelling gear 1 of drive unit interlock, the outer cover of screw rod body is equipped with screw sleeve 6, screw rod body 2 comprises feed zone A and compression section B, screw thread in the present embodiment on the screw rod body does not equidistantly wait deeply, and the screw channel on the screw rod body between each screw thread consists of leads glue groove 5.Feed zone A in the screw rod body 2 is the straight-bar body, and compression section B is positive cone-shaped rod body, and its tapering is the 0.5-2 degree; Feed zone in the screw rod body and the Length Ratio of compression section are 1:4.The present embodiment is take ∮ 120 rubber extruding machines as example, and as preferably, best tapering is 1 degree, and the concrete tapering of compression section determines according to the model of the applicable rubber extruding machine of screw rod in the screw rod body.Be provided with opening 4 on the screw thread 3 on the screw rod body 2 of its feed zone A.Be symmetrical arranged two openings 4 along even circumferential on each screw thread 3 of feed zone A, referring to accompanying drawing 2, in the present embodiment, on each screw thread of feed zone, at the upper and lower side of its circumference an opening 4 be set respectively, the degree of depth of opening 4 is 10mm, and width is 20mm.Such hatch frame can make sizing material fully mix and reduce further compacting and the plasticizing to the compression section of frictional force smooth delivery of power through feed zone, is extruded by the compression section at last.
Wherein feed zone and compression section are by the Determines of the sizing material on the screw rod body, and the function of feed zone is to carry out compacting and conveying to sizing material is preliminary after heating up; The function of compression section is to make the further compacting of sizing material and plasticizing, makes the air pressure that is enclosed in the screw rod get back to the charge door place and discharges, and improve the heat-conductive characteristic of sizing material.Conventional screw generally is divided into three parts: feed zone, the compression section, homogenizing zone, screw rod of the present invention is in order effectively to improve the screw compression ratio, flow behavior according to sizing material has prolonged compression section length, 2 section designs have been taked, when being flowed forward in screw rod, sizing material gradually reduces, simultaneously under sleeve external heat and screw rod and the effect of sleeve lining fricting shearing, impel the sizing material temperature to raise and begin melting, make the even level pressure melt extrusion of sizing material, reach the high compression ratio of designing requirement, the compression section length that has solved conventional 3 section designs can not reach the designing requirement of high compression ratio not.
Referring to accompanying drawing 3, the inwall of the screw sleeve 6 that matches with this screw rod is the conically shaped structure that is complementary with screw rod body 2.
In the situation that guarantee that draw ratio is constant, this screw-rod structure disclosed in this invention improves the screw compression ratio, make its compression ratio reach 8:1, the bottom of thread diameter that has guaranteed again the screw rod root does not reduce, avoid that the screw rod root fractures under the high frictional force effect when rubber flows, realize that the highly dense solidity of rubber is extruded.
Claims (4)
1. rubber extruding machine screw rod, comprise the screw rod body, screw rod body tail end be provided be integrated with it and with the travelling gear of drive unit interlock, the outer cover of screw rod body is equipped with screw sleeve, screw channel on the screw rod body between each screw thread consists of leads the glue groove, it is characterized in that, described screw rod body comprises feed zone and compression section, the compression section is positive cone-shaped rod body, and its tapering is the 0.5-2 degree; Be provided with opening on the screw thread on the screw rod body of described feed zone; The inwall of described screw sleeve is the conically shaped structure that is complementary with the screw rod body.
2. rubber extruding machine screw rod according to claim 1 is characterized in that, is symmetrical arranged two openings along even circumferential on each screw thread of feed zone.
3. rubber extruding machine screw rod according to claim 2 is characterized in that, the degree of depth of the opening on the feed zone screw thread is 10mm, and width is 20mm.
4. rubber extruding machine screw rod according to claim 1 is characterized in that, the feed zone in the described screw rod body and the Length Ratio of compression section are 1:4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104483473A CN102886889A (en) | 2012-11-12 | 2012-11-12 | Screw of rubber extruding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104483473A CN102886889A (en) | 2012-11-12 | 2012-11-12 | Screw of rubber extruding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102886889A true CN102886889A (en) | 2013-01-23 |
Family
ID=47530668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104483473A Pending CN102886889A (en) | 2012-11-12 | 2012-11-12 | Screw of rubber extruding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102886889A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2786853A1 (en) * | 2013-04-02 | 2014-10-08 | Konstrukta Industry, a.s | Decompression screw for processing rubber compounds |
| CN104260307A (en) * | 2014-07-28 | 2015-01-07 | 安庆钰龙橡塑机械制造有限公司 | Rubber extruding machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5251459A (en) * | 1975-10-24 | 1977-04-25 | Toyo Soda Mfg Co Ltd | Thermoplastic resin extruder |
| JPS5528868A (en) * | 1978-08-24 | 1980-02-29 | Fujikura Ltd | Method of extruding plastic |
| US4304539A (en) * | 1979-06-12 | 1981-12-08 | Kobe Steel, Ltd. | Extruder with roller die |
| EP0509779A2 (en) * | 1991-04-19 | 1992-10-21 | Frenkel C-D Aktiengesellschaft | Improvements in cold feed rubber extruders |
| DE19904227A1 (en) * | 1999-02-03 | 2000-08-10 | Rainer Anderlik | Extruder for recycling thermoplastic foam particles includes a screw with finer pitch towards the exit made by twisting a tapered metal strip |
| CN201745154U (en) * | 2010-08-10 | 2011-02-16 | 昆山科信橡塑机械有限公司 | Special screw rod for internal and external shielding cable materials |
| CN202862573U (en) * | 2012-11-12 | 2013-04-10 | 河北华通线缆集团有限公司 | Screw of rubber extruding machine |
-
2012
- 2012-11-12 CN CN2012104483473A patent/CN102886889A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5251459A (en) * | 1975-10-24 | 1977-04-25 | Toyo Soda Mfg Co Ltd | Thermoplastic resin extruder |
| JPS5528868A (en) * | 1978-08-24 | 1980-02-29 | Fujikura Ltd | Method of extruding plastic |
| US4304539A (en) * | 1979-06-12 | 1981-12-08 | Kobe Steel, Ltd. | Extruder with roller die |
| EP0509779A2 (en) * | 1991-04-19 | 1992-10-21 | Frenkel C-D Aktiengesellschaft | Improvements in cold feed rubber extruders |
| DE19904227A1 (en) * | 1999-02-03 | 2000-08-10 | Rainer Anderlik | Extruder for recycling thermoplastic foam particles includes a screw with finer pitch towards the exit made by twisting a tapered metal strip |
| CN201745154U (en) * | 2010-08-10 | 2011-02-16 | 昆山科信橡塑机械有限公司 | Special screw rod for internal and external shielding cable materials |
| CN202862573U (en) * | 2012-11-12 | 2013-04-10 | 河北华通线缆集团有限公司 | Screw of rubber extruding machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2786853A1 (en) * | 2013-04-02 | 2014-10-08 | Konstrukta Industry, a.s | Decompression screw for processing rubber compounds |
| EP2786853B1 (en) | 2013-04-02 | 2021-10-13 | Konstrukta-TireTech, a.s. | Decompression screw for processing rubber compounds |
| CN104260307A (en) * | 2014-07-28 | 2015-01-07 | 安庆钰龙橡塑机械制造有限公司 | Rubber extruding machine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130123 |