CN202241869U - Liquid crystal polymer plasticizing device - Google Patents
Liquid crystal polymer plasticizing device Download PDFInfo
- Publication number
- CN202241869U CN202241869U CN2011203642007U CN201120364200U CN202241869U CN 202241869 U CN202241869 U CN 202241869U CN 2011203642007 U CN2011203642007 U CN 2011203642007U CN 201120364200 U CN201120364200 U CN 201120364200U CN 202241869 U CN202241869 U CN 202241869U
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- China
- Prior art keywords
- liquid crystal
- screw rod
- crystal polymer
- section
- extrusion screw
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- Expired - Fee Related
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a liquid crystal polymer plasticizing device. The device comprises a material cylinder and an extrusion screw rod, wherein the extrusion screw rod is arranged in the material cylinder; the screw rod comprises a feeding section, a material storage section and a compression section; and an anti-slip spiral groove is formed in a threaded groove of the feeding section. During a feeding process, the plasticizing device is not easy to slide, and feeding process is easy to realize.
Description
Technical field
The utility model relates to injection machine, particularly the plasticizing apparatus in the injection machine.
Background technology
LCP is the abbreviation of liquid crystal polymer.This plastics of LCP have good temperature resistance can; Its heat distortion temperature is 121～355 ℃; Have excellent flame, electrical insulating property; Its dielectric strength is high, and arc resistance is good, has radiation resistance preferably, hydrolytic resistance, weatherability, chemical proofing, low smokiness, high-dimensional stability, agent of low hygroscopicity, extremely low linear expansion coefficient, high impact and rigidity.Chemicals such as that the outstanding decay resistance of LCP mainly shows as is acidproof, solvent and hydro carbons, and barrier is preferably arranged.
Because LCP is liquid crystal polymer, be liquid crystal state during fusion, self-lubricity is good, and forming temperature is high and generally all contain glass fibre, so requires very high to screw rod during injection moulding.
In traditional LCP injection machine, the speed inequality of feeding in raw material appears in common screw rod easily, and reinforced skidding is difficult to realize feeding in raw material, and causes product that phenomenons such as bubble deformation are arranged easily.
Summary of the invention
The utility model technical problem to be solved is to feed in raw material to skid, be difficult to realize feeding in raw material.For solving this technical problem, the utility model provides a kind of liquid crystal polymer plasticizing apparatus.
Solve the problems of the technologies described above technical scheme be: the liquid crystal polymer plasticizing apparatus comprises barrel and extrusion screw rod, and described extrusion screw rod is located in the barrel; Described screw rod comprises feed zone, storing section and compression section; Be provided with anti-skidding helicla flute in the thread groove of feed zone.
As being to specialize, anti-skidding spiral fluted section radius is 2mm.
As improvement, the draw ratio of feed zone is 23.5-24; The draw ratio of storing section is 16.4-17; The draw ratio of compression section is 7-7.5.
As improvement, the compression ratio of extrusion screw rod is 3.5-3.8.
As improvement, the front end of barrel is provided with the material mouth, and the material mouth has a nozzle, and the diameter of nozzle is 1.5mm.
The beneficial effect of the utility model liquid crystal polymer plasticizing apparatus is: owing to be provided with anti-skidding helicla flute; When plastics enter into feeding section; Increase the frictional force between plastics and the screw rod, thereby can prevent plastics from when getting into feed zone, skidding and be difficult to realize charging, made charging smooth and easy.Because anti-skidding spiral fluted section radius is 2mm, like this, not only be easy to processing, and anti-skidding effect is best.With respect to traditional extrusion screw rod, variation has all taken place in the draw ratio of the feed zone of the utility model extrusion screw rod, storing section and compression section, and variation has also taken place compression ratio; Like this; Can make feed zone, storing section and compression section carry out co-ordination, improving reinforced uniformity, and can reduce extrusion screw rod shearing to plastics when reinforced; Reduce shear heat, prevent that product from producing bubble and distortion.In the utility model, the diameter of nozzle is 1.5mm, and the nozzle diameter of prior art is 3mm; With respect to prior art, the diameter of nozzle reduces, like this; This plasticizing needs the special plastics of higher temperature for LCP, can effectively prevent flash, and can improve extruded velocity; Make plastics to be full of die cavity fast, prevent that crossing the feasible slowly plastics cooling earlier that is squeezed into earlier in the die cavity because of extruded velocity can't fill with whole die cavity, influences the quality of product.
Description of drawings
Fig. 1 is the structure chart of liquid crystal polymer plasticizing apparatus.
Fig. 2 is the cutaway view of liquid crystal polymer plasticizing apparatus.
Fig. 3 is the structure chart of extrusion screw rod.
Fig. 4 is the enlarged drawing of E among Fig. 3.
Fig. 5 is the structure chart of material mouth.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is further elaborated.
As depicted in figs. 1 and 2, the liquid crystal polymer plasticizing apparatus comprises barrel 1, extrusion screw rod 2 and material mouth 3.Barrel 1 is enclosed within outside the extrusion screw rod 2; Material mouth 3 is installed in the front end of barrel 1.
Like Fig. 3 and shown in Figure 4, described screw rod comprises feed zone A, storing section B and compression section C; Be provided with the anti-skidding helicla flute 21 of even layout in the thread groove of feed zone A, described anti-skidding spiral fluted section radius is 2mm.The draw ratio of feed zone A is 23.5-24, preferred 23.9; The draw ratio of storing section B is 16.4-17, preferred 16.7; The draw ratio of compression section C is 7-7.5, preferred 7.2.The compression ratio of extrusion screw rod is 3.5-3.8, preferred 3.67.
As shown in Figure 5, material mouth 3 has a nozzle 31, and the diameter D of nozzle 31 is 1.5mm.
The operation principle of the liquid crystal polymer plasticizing apparatus of the utility model is: after in plastics enter into barrel 1; Through feed zone A plastic conveying and plastic is stored in storing section B, the plastics in the storing section B constantly are transported in the C of compression section and are injected in the mold cavity by plasticizing and by the plastics of material mouth with plasticizing.
The liquid crystal polymer plasticizing apparatus of the utility model; Owing to be provided with anti-skidding helicla flute 21, when plastics enter into feeding section, increased the frictional force between plastics and the screw rod; Thereby can prevent that plastics from skidding and be difficult to realize charging, makes charging smooth and easy when getting into feed zone.With respect to traditional extrusion screw rod, variation has all taken place in the draw ratio of the feed zone of the utility model extrusion screw rod, storing section and compression section, and variation has also taken place compression ratio; Like this; Can make feed zone, storing section and compression section carry out co-ordination, improving reinforced uniformity, and can reduce extrusion screw rod shearing to plastics when reinforced; Reduce shear heat, prevent that product from producing bubble and distortion.In the utility model, the diameter of nozzle 31 is 1.5mm, and the nozzle diameter of prior art is 3mm; With respect to prior art, the diameter of nozzle reduces, like this; This plasticizing needs the special plastics of higher temperature for LCP, can effectively prevent flash, and can improve extruded velocity; Make plastics to be full of die cavity fast, prevent that crossing the feasible slowly plastics cooling earlier that is squeezed into earlier in the die cavity because of extruded velocity can't fill with whole die cavity, influences the quality of product.
Claims (5)
1. the liquid crystal polymer plasticizing apparatus comprises barrel and extrusion screw rod, and described extrusion screw rod is located in the barrel; Described screw rod comprises feed zone, storing section and compression section; It is characterized in that: be provided with anti-skidding helicla flute in the thread groove of feed zone.
2. liquid crystal polymer plasticizing apparatus according to claim 1 is characterized in that: anti-skidding spiral fluted section radius is 2mm.
3. liquid crystal polymer plasticizing apparatus according to claim 1 is characterized in that: the draw ratio of feed zone is 23.5-24; The draw ratio of storing section is 16.4-17; The draw ratio of compression section is 7-7.5.
4. liquid crystal polymer plasticizing apparatus according to claim 1 is characterized in that: the compression ratio of extrusion screw rod is 3.5-3.8.
5. liquid crystal polymer plasticizing apparatus according to claim 1 is characterized in that: the front end of barrel is provided with the material mouth, and the material mouth has a nozzle, and the diameter of nozzle is 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203642007U CN202241869U (en) | 2011-09-23 | 2011-09-23 | Liquid crystal polymer plasticizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203642007U CN202241869U (en) | 2011-09-23 | 2011-09-23 | Liquid crystal polymer plasticizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202241869U true CN202241869U (en) | 2012-05-30 |
Family
ID=46103162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203642007U Expired - Fee Related CN202241869U (en) | 2011-09-23 | 2011-09-23 | Liquid crystal polymer plasticizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202241869U (en) |
-
2011
- 2011-09-23 CN CN2011203642007U patent/CN202241869U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120530 Termination date: 20190923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |