CN101301782A - Intermittent screw thread type reaction injection mixing element - Google Patents
Intermittent screw thread type reaction injection mixing element Download PDFInfo
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- CN101301782A CN101301782A CNA2007101068340A CN200710106834A CN101301782A CN 101301782 A CN101301782 A CN 101301782A CN A2007101068340 A CNA2007101068340 A CN A2007101068340A CN 200710106834 A CN200710106834 A CN 200710106834A CN 101301782 A CN101301782 A CN 101301782A
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Abstract
An injection mixing element of a discontinuous thread type reaction consists of a discontinuous thread type working section (1) and a drive connection section (2); wherein, the discontinuous thread type working section (1) is a rectangle thread section lathed and is manufactured by a metal material; the structure parameters of the discontinuous thread type working section (1) are that the length is L1, the diameter is D, the thread pitch is Lt, the width of the thread ridge is E and the depth of the thread slot is H; besides, a discontinuous slot with discontinuous width of W is processed by being spaced by every two thread pitches; the depth of the discontinuous slot is also the depth of the thread slot which is H; a connection structure matched with a drive shaft of the mixing element is manufactured on the drive connection section (2). The invention can build a larger injection force; the surface quality of a product is good; the structure is simple; the cost is low; besides, the invention is simple and easy to be used, maintained and repaired.
Description
Technical field
The present invention relates to a kind of hybrid element, refer to be used for the hybrid element that the former hybrid system is carried out reaction and injection molding process especially.
Background technology
Reaction injection (RIM) be a kind ofly directly two or more viscous liquid raw materials are injected in the mould while mixing, the High-efficient Production mode of polymerisation formation macromolecular material product rapidly, it is the Rapid Manufacturing Technology of macromolecular material product, it is a present advanced person's manufacturing technology, make fast with prototype, the mould Rapid Manufacturing Technology combines and can realize in a short time the quick manufacture process of " conceptual design---prototype manufacturing---mould manufacturing---product moulding ", can promptly design concept be changed into the actual product of certain batch.Compare with other forming method, the reaction injection device structure is simple, and low cost of manufacture can be at mold filling under the normal pressure and curing molding, being suitable for processing structure complexity, careful, the no draw taper of decorative pattern or surface has the product of dark groove, can directly take out behind the product moulding by casting.Under the promotion of auto industry and furniture industry, the reaction injection molding technology is promoted greatly, the reaction injection molding goods have expanded to fields such as electronic instrument, building, boats and ships, sports equipment and recreation facility by the earliest auto parts and components, and towards more large-scale, more complicated product development.To high speed, high-quality, high accuracy development, research field relates to raw material, equipment, technology to reaction and injection molding process.
The design of former hybrid system is the key technology of reaction and injection molding process, have a lot of reaction injection processes all be characteristic with the former hybrid system as its characteristics, manufacturing speed, quality, manufacturing cost and the control accuracy of the performance impact product of hybrid system.Hybrid system commonly used at present has clashes into hybrid, the hybrid and mechanical agitation type of rotation, various forms of hybrid systems respectively have pluses and minuses, thereby to research and develop novel hybrid system be a current popular domain, but domestic research-and-development activity to hybrid system is carried out seldom, all is directly from external introducing equipment and technology.
For rotary hybrid system, nearly all be to adopt rotary Kenics blender.Hybrid element is made up of the blade that reverses 180 °, and adjacent two twist angle of blade are opposite, and the 90 ° of arrangements that interlace.A, B two component flow enter by a certain percentage in the Kenics blender and mix, when flowing through the Kenics mixing head except being cut apart repeatedly and radially being mixed, also stand strong shearing, thereby can well be mixed owing to the rotation of mixing head and the narrow gap of mixing head and sleeve lining.This blender is that the hybrid element with static Kenics blender rotates, and combines the advantage of static Kenics mixer and agitator, is applied in recent years in the low pressure reaction injection moulding field.Kenics hybrid element material adopts plastics mostly, and adopts injection molding method manufacturing.It seems that from use this element is easily broken, thereby cause problems such as equipment investment and operating cost height.
This shows, for increase work efficiency, work quality and reducing production costs, the characteristic that just must scrutinize and analyze former hybrid element is to design novel hybrid element.
Finding after rotary blender mixed process is carried out finite element flow simulating and combined experiments stretches and shear plays a major role in mixing, and the effect of cutting apart of cross structure is less important for mixing.According to this judgement we designed structure more simple, processing more easy intermittent screw thread type hybrid element.
Summary of the invention
According to background technology, the object of the present invention is to provide a kind of by the intermittent screw thread active section with the intermittent screw thread type reaction injection mixing element of simple in structure, the handling ease that drives that linkage section forms.
To achieve these goals, the present invention is achieved through the following technical solutions:
A kind of intermittent screw thread type reaction injection mixing element, form by intermittent screw thread type active section (1) and driving linkage section (2), wherein: intermittent screw thread type active section (1) is the rectangular thread section that is formed by metal material car system, its structural parameters are that length is L1, diameter is D, pitch is Lt, spiral shell rib width is E, spiral groove depth is H, and every two pitch process an intersegmental disconnected width be W between fault trough, being interrupted groove depth also is spiral groove depth, according to different needs, by set structural parameters numerical value car system intermittent screw thread type reaction injection mixing element; Driving linkage section (2) length is L2, makes the structure that matches and be connected with reaction injection molding equipment hybrid element driving shaft on its length L 2.
Owing to adopted technique scheme, the present invention to have the following advantages and effect:
1, the present invention mixes required stretching because the rotation of hybrid element and helicitic texture provide, the spiral shell rib provides with gap between sleeve and mixes required shear action, fault trough provides and mixes required reorientation and cut apart effect between screw thread, make and make injection molding product obtain high-quality surface and cheaper operating cost by hybrid element final high efficiency, high-quality hybrid technique realized in hybrid system.
2, the present invention is simple in structure, adopts method for metal working commonly used just can produce the hybrid element of metal material or composite material quality, in the service life of having improved hybrid element, has reduced manufacturing cost.
Description of drawings
Fig. 1 is a structure collectivity schematic diagram of the present invention
Fig. 2 connects the schematic diagram of behaviour in service on HVP2000 reaction injection molding equipment for the present invention
The specific embodiment
Illustrate by Fig. 1, a kind of intermittent screw thread type reaction injection mixing element, form by intermittent screw thread type active section 1 and driving linkage section 2, wherein: intermittent screw thread type active section 1 is the rectangular thread section that is formed by metal material car system, its structural parameters are that length is L1, diameter is D, pitch is Lt, spiral shell rib width is E, spiral groove depth is H, and every two pitch process an intersegmental disconnected width be W between fault trough, being interrupted groove depth also is spiral groove depth, according to different needs, by set structural parameters numerical value car system intermittent screw thread type reaction injection mixing element; Driving linkage section 2 length is L2, makes the structure that matches and be connected with reaction injection molding equipment hybrid element driving shaft on its length L 2.
Referring to a specific embodiment of the present invention, adopt the aluminium machined into, its structural parameters are: the length L 1=150mm of intermittent screw thread type active section 1, diameter D=12mm, pitch Lt=6mm, spiral shell rib width E=3mm, spiral groove depth H=3mm, be interrupted width W=3mm, drive linkage section 2 length L 2=12mm, and make the syndeton that can match thereon with reaction injection molding equipment HVP2000 hybrid element driving shaft.
By Fig. 2 intermittent screw thread type reaction injection mixing element is shown and on the small-sized reaction injection molding equipment of HVP2000, connects situation about using, from figure as can be known, the intermittent screw thread type hybrid element of being made up of intermittent screw thread type active section 1 and driving linkage section 2 interconnects by connecting pin 44 and driving shaft 43 through driving linkage section 2, suit and intermittent screw thread type active section 1 keep the outer sleeve 3 in a certain size gap on intermittent screw thread type active section 1, its root interconnects with injection holder 4, its head is shaped on exit wound of bullet 31, and injection head 4 is provided with A material inlet 41 and B material inlet 42; The intermittent screw thread type hybrid element is by the drive motors driven rotary of reaction injection molding equipment, its two sleeve gear pumps are respectively with the A of polyurethane, two kinds of viscous liquid materials of B pump into blender from A material inlet 41 and B material inlet 42, two component flow that pump into react after blender mixes, through the die cavity of exit wound of bullet 31 injection moulds, after cooling, promptly obtain the moulded products of polyurethane.
In mold filling process with write down mixed material at set intervals with thermal infrared imager from reaction temperature field that mold filling begins, can obtain mixed material reaction heat course, and then analyze the mixed performance of material reaction situation and hybrid element after this hybrid element mixes.It seems with this sample result and with Kenics hybrid element result contrast, intermittent screw thread type reaction injection mixing element of the present invention can be set up bigger injection pressure, products surface quality is better, mixed effect is close with the Kenics hybrid element, two kinds of materials fully can be mixed, reaction is violent, and curing rate is fast.
Claims (1)
1, a kind of intermittent screw thread type reaction injection mixing element, form by intermittent screw thread type active section (1) and driving linkage section (2), it is characterized in that: intermittent screw thread type active section (1) is the rectangular thread section that is formed by metal material car system, process an intersegmental fault trough every two pitch, being interrupted groove depth also is spiral groove depth; On driving linkage section (2), make the structure that matches and be connected with reaction injection molding equipment hybrid element driving shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101068340A CN101301782A (en) | 2007-05-11 | 2007-05-11 | Intermittent screw thread type reaction injection mixing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101068340A CN101301782A (en) | 2007-05-11 | 2007-05-11 | Intermittent screw thread type reaction injection mixing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101301782A true CN101301782A (en) | 2008-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101068340A Pending CN101301782A (en) | 2007-05-11 | 2007-05-11 | Intermittent screw thread type reaction injection mixing element |
Country Status (1)
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| CN (1) | CN101301782A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950738A (en) * | 2011-08-10 | 2013-03-06 | 株式会社日本制钢所 | Screw for injection molding machine |
| CN103600078A (en) * | 2013-09-12 | 2014-02-26 | 苏州米莫金属科技有限公司 | Screw injection molding device |
-
2007
- 2007-05-11 CN CNA2007101068340A patent/CN101301782A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950738A (en) * | 2011-08-10 | 2013-03-06 | 株式会社日本制钢所 | Screw for injection molding machine |
| CN103600078A (en) * | 2013-09-12 | 2014-02-26 | 苏州米莫金属科技有限公司 | Screw injection molding device |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081112 |