CN102490326A - Extrusion screw - Google Patents
Extrusion screw Download PDFInfo
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- CN102490326A CN102490326A CN2011104381988A CN201110438198A CN102490326A CN 102490326 A CN102490326 A CN 102490326A CN 2011104381988 A CN2011104381988 A CN 2011104381988A CN 201110438198 A CN201110438198 A CN 201110438198A CN 102490326 A CN102490326 A CN 102490326A
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- spiral shell
- shell rib
- zone
- rib
- screw rod
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to an extrusion screw, which is characterized in that screw rims are arranged on a charging segment (A), a melting segment (B), a plasticizing segment (C) and an extrusion segment (E). An auxiliary screw rim groove (2) is provided on the screw rim of the plasticizing segment (C) at intervals, a transverse rim (1) is axially provided between the screw rim of the plasticizing segment (C), the transverse rim and the screw rim of the plasticizing segment (C) form a plurality of main screw rim grooves (3). Compared with the prior art, the extrusion screw has the advantages that a main and auxiliary double screw rims structure realizes the separation of a solid phase of the material and a liquid phase of the material, the plasticizing quality can be effectively enhanced, the melt crystallization point can be reduced, and the higher transparent grade of the product is reached; simultaneously, the plasticizing distance and plasticizing time can be shortened, and the shear degradation of highly viscous fluid can be avoided; a protruded nailing block structure of the extrusion segment enables melt to extrude along a netted channel for realizing the stabilization and uniformity of the extrusion of the materials.
Description
Technical field
The present invention relates to a kind of manufacture technology field of injection machine, especially refer to the extrusion screw rod in a kind of injection machine.
Background technology
Existing a kind of patent No. is 200920140357.4 and is called that the Chinese utility model patent of " the mixing formula screw rod of gradual change " discloses the mixing formula screw rod of a kind of gradual change; Its structure comprises rotary head, the body of rod and external screw thread; The rotary head and the body of rod are fixed together; External screw thread is arranged on the body of rod, and the body of rod is a feed end near an end of rotary head, and the other end of the body of rod is a discharge end; This body of rod is divided into 6 sections, is first fluxing zone, second gradual change footpath fluxing zone, the 3rd fluxing zone, melt compounded section, blowing agent and mixing of materials section and mixture deferent segment in regular turn from feed end to the discharge end of the body of rod.This mixing formula screw rod is easy to use, has improved the melting effect of fused materials.Yet the plastic products plasticizing quality that uses this screw rod to process is not high, transparency is not enough, and occurs phenomenons such as putty and burnt material in the production process easily.
Summary of the invention
Technical problem to be solved by this invention be provide to above-mentioned prior art present situation that a kind of plasticizing capacity is good, extrusion performance is stable, be difficult for the extrusion screw rod of burnt material and putty.
The present invention solves the problems of the technologies described above the technical scheme that is adopted and is this kind extrusion screw rod; Include feed zone, melt zone, fluxing zone, extruding zone; Said feed zone, melt zone, fluxing zone, extruding zone are provided with the spiral shell rib; It is characterized in that: be arranged at intervals with secondary spiral shell rib groove on the spiral shell rib of said fluxing zone, axially be provided with horizontal rib between the spiral shell rib of said fluxing zone, said horizontal rib becomes some main spiral shell rib grooves with the spiral shell prismatic of fluxing zone.
As improvement, the thickness of said horizontal rib is less than the thickness of fluxing zone spiral shell rib.
Improve, the angle that said horizontal rib becomes with fluxing zone spiral shell prismatic is 69 ° again.
Improve, the front portion of said fluxing zone is provided with the rounding off groove again.
Improve again; The spiral shell rib of said melt zone includes main spiral shell rib and secondary spiral shell rib arranged side by side each other; One group of whole spiral shell rib of the common formation of said main spiral shell rib and secondary spiral shell rib; Spiral shell rib distance between said main spiral shell rib of melt zone leading portion and secondary spiral shell rib is broadened by narrow, and the spiral shell rib between the whole spiral shell rib of said melt zone leading portion is apart from being narrowed down by wide; Spiral shell rib distance between said main spiral shell rib of melt zone back segment and secondary spiral shell rib is narrowed down by wide, and the spiral shell rib between the whole spiral shell rib of said melt zone back segment is apart from being broadened by narrow.
Improve, the main spiral shell rib of said melt zone leading portion and the spiral shell rib between the secondary spiral shell rib are apart from being 0～5mm by the narrow scope that broadens again, and the spiral shell rib distance between the whole spiral shell rib of said melt zone leading portion is 7～2mm by the wide scope that narrows down.
Improve, the spiral shell rib between said main spiral shell rib of said melt zone back segment and the secondary spiral shell rib is apart from being 5～0mm by the wide scope that narrows down again, and the spiral shell rib distance between the whole spiral shell rib of said melt zone back segment is 2～7mm by the narrow scope that broadens.
Improve again, on the periphery of the end of said extruding zone, be distributed with protruding nail piece, said protruding nail piece for many groups at interval and be arranged in parallel, the protruding nail piece in every group is also for equidistantly being distributed on the same periphery at interval.
Improve, the spiral shell rib on the said feed zone is 85～90 ° with the angle between the vertical vertical line in top in the sideline of axial section and this sideline again, and said spiral shell rib is 0.5mm with the corner radius of the radian on the both sides, sideline of axial section.
Improve, the draw ratio of said screw rod is 31: 1 again.
Compared with prior art, the invention has the advantages that: the two spiral shell rib structures of the major-minor of fluxing zone, realized the solid phase of material and separating of liquid phase, effectively improved plasticizing quality, reduced the brilliant point of melt, make goods reach higher transparency levels; Simultaneously, shorten plasticizing distance and time, avoided the highly viscous fluid shear degradation; Secondly, the protruding nail block structure of extruding zone makes melt extrude along netted runner, has realized the stable uniform that material is extruded; In addition, the unique design of feed zone spiral shell rib push angle, material is fallen from barrel material mouth after, can be immediately carried by the spiral shell rib, solved partial material and climbed over the transfer efficiency decline problem that spiral shell rib tooth form causes.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the enlarged drawing of the I portion among Fig. 1;
Fig. 3 is the enlarged drawing of the II portion among Fig. 1;
Fig. 4 is the expanded view of the fluxing zone among Fig. 1;
Fig. 5 is the enlarged drawing of the III portion among Fig. 1.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Shown in Fig. 1 to 5; This extrusion screw rod, draw ratio is 31: 1, includes feed zone A, melt zone B, fluxing zone C, extruding zone E; Feed zone A, melt zone B, fluxing zone C, extruding zone E are provided with the spiral shell rib; Be arranged at intervals with secondary spiral shell rib groove 2 on the spiral shell rib of fluxing zone C, axially be provided with horizontal rib 1 between the spiral shell rib of fluxing zone C, horizontal rib 1 becomes some main spiral shell rib grooves 3 with the spiral shell prismatic of fluxing zone C.The thickness of horizontal rib 1 is less than the thickness of fluxing zone C spiral shell rib.Horizontal rib 1 is 69 ° with the angle β that fluxing zone C spiral shell prismatic becomes.The front portion of fluxing zone C is provided with rounding off groove 4.
The spiral shell rib of above-mentioned melt zone B includes main spiral shell rib arranged side by side each other 71 and secondary spiral shell rib 72, one group of whole spiral shell rib of main spiral shell rib 71 and secondary spiral shell rib 72 common formations.At melt zone leading portion B1, the spiral shell rib between main spiral shell rib 71 and the secondary spiral shell rib 72 is apart from being broadened by narrow, and its scope is 0～5cm, and the distance of the spiral shell rib between its whole spiral shell rib is narrowed down by wide, and its scope is 7～2cm; At melt zone back segment B2, the spiral shell rib between main spiral shell rib 71 and the secondary spiral shell rib 72 is apart from being narrowed down by wide, and its scope is 5～0cm, and the distance of the spiral shell rib between its whole spiral shell rib is broadened by narrow, and its scope is 2～7cm.
Be distributed with protruding nail piece 6 on the end periphery of above-mentioned extruding zone E, protruding nail piece 6 for many groups at interval and be arranged in parallel, the protruding nail piece 6 in every group is also for equidistantly being distributed on the same periphery at interval.
Spiral shell rib on the above-mentioned feed zone A is 87 ° with the angle between the vertical vertical line 1b in top of the sideline 1a of axial section and this sideline 1a, and the spiral shell rib is 0.5mm with the corner radius of the radian R on the 1a both sides, sideline of axial section.
This extrusion screw rod also possesses following characteristics:
1, use shunting principle: the melt of melt zone B output is through slick and sly excessively groove 4; Get into main spiral shell rib groove 3; Under the internal pressure effect; Through secondary spiral shell rib groove 2, form " the secondary spiral shell rib of the secondary spiral shell rib of main spiral shell rib groove 3-groove 2-master spiral shell rib groove 3-groove 2 ... " the netted of pattern and alternately transmit, preferably mix through the excessive groove 4 of slyness again and export to extruding zone E.Different with traditional flow dividing structure, fluid mobility that this extruder is inner and pressure variation have sensitiveer servo-actuated property, have solved rotating speed and have caused the goods problem that pressure oscillation causes.
2, use the Separation of Solid and Liquid principle: no matter be by of the conversion of the excessive groove 4 of slyness with main spiral shell rib groove 3; Still " the secondary spiral shell rib of the secondary spiral shell rib of main spiral shell rib groove 3-groove 2-master spiral shell rib groove 3-groove 2 ... " pattern is changed groove; Its transitional region all has " peeling design ", and Thickness Design has determined the fine and closely woven degree of plasticizing melt.Solid phase particle in the liquid phase, under " peeling " located because of resistance and rotary thrust effect, rotating turbulence in main spiral shell rib groove 3 was passed through after degree of depth plasticizing.Through the refinement plasticizing of this structure, the output melt quality is stable, has solved transparent article, particularly the crystalline substance point problem of film series products.
3, use the thinning principle of plastic tensile: in main spiral shell rib groove 3, because arc two end spaceses are less than central space, all pressure at two ends are higher than center pressure; When therefore the plastic cement melt is in the main spiral shell rib groove 3; Under the effect of arc pressure at two ends, constantly stretched, such stretching helps forming low viscous melt fluid; Thereby be convenient to the conveying of raw material, enhance productivity; Also reduced the shearing of screw rod to melt simultaneously, the melt that the high speed shear of reduction causes burns phenomenon.
4, melt zone B is provided with the main spiral shell rib groove 3 that matrix is uniformly distributed with, and the two ends spiral shell rib of all main spiral shell rib grooves 3 is and mills little bow type structure, and each arched runner all is the space that groove depth changes like this, in the screw rod of rotation melt during pressure also can change.When the plastic cement melt gets into 3 beginnings of main spiral shell rib groove from normal runner, just under the active force of internal pressure, begin scattering to melt, the particle solid phase in the melt is turbulent flow in arcuate slots then, realizes whereby melt is plastified the filtration with solid phase faster.
5, the spiral shell rib tooth form angle of feed zone A has been done modifiedly, and applied mechanics thrust principle is designed to 87 ° with push angle.Material falls from barrel material mouth, becomes by the spiral shell rib to carry, and has solved partial material and has climbed over the problem that spiral shell rib tooth form causes transfer efficiency to descend.
6, in order to promote the produce market occupancy that the high plasticizing of homemade extrusion equipment production capacity, particularly film class requires, this extrusion screw rod combines the state of development of present plastic material prescription and the electromechanical properties of extrusion equipment matching component; Make the great adjustment on the structure and parameter; Therefore, the plastic cement products that the production and processing of this extrusion screw rod goes out can reach low-temperature melt output requirement, and melt temperature, uniform component; Do not have brilliant some bubble phenomenon, splendid adaptability is arranged for high-end shake out.
Claims (10)
1. extrusion screw rod; Include feed zone (A), melt zone (B), fluxing zone (C), extruding zone (E); Said feed zone (A), melt zone (B), fluxing zone (C), extruding zone (E) are provided with the spiral shell rib; It is characterized in that: be arranged at intervals with secondary spiral shell rib groove (2) on the spiral shell rib of said fluxing zone (C), axially be provided with horizontal rib (1) between the spiral shell rib of said fluxing zone (C), said horizontal rib (1) becomes some main spiral shell rib grooves (3) with the spiral shell prismatic of fluxing zone (C).
2. extrusion screw rod according to claim 1 is characterized in that: the thickness of said horizontal rib (1) is less than the thickness of fluxing zone (C) spiral shell rib.
3. extrusion screw rod according to claim 2 is characterized in that: said horizontal rib (1) is 69 ° with the angle (β) that fluxing zone (C) spiral shell prismatic becomes.
4. extrusion screw rod according to claim 1 is characterized in that: the front portion of said fluxing zone (C) is provided with rounding off groove (4).
5. according to the described extrusion screw rod of arbitrary claim in the claim 1 to 4; It is characterized in that: the spiral shell rib of said melt zone (B) includes main spiral shell rib (71) and secondary spiral shell rib (72) arranged side by side each other; Said main spiral shell rib (71) and secondary spiral shell rib (72) constitute one group of whole spiral shell rib jointly; Spiral shell rib distance between said main spiral shell rib of melt zone leading portion (B1) (71) and secondary spiral shell rib (72) is broadened by narrow, and the spiral shell rib between the whole spiral shell rib of said melt zone leading portion (B1) is apart from being narrowed down by wide; Spiral shell rib distance between said main spiral shell rib of melt zone back segment (B2) (71) and secondary spiral shell rib (72) is narrowed down by wide, and the spiral shell rib between the whole spiral shell rib of said melt zone back segment (B2) is apart from being broadened by narrow.
6. extrusion screw rod according to claim 5; It is characterized in that: than 0～5cm, the spiral shell rib distance between the whole spiral shell rib of said melt zone leading portion (B1) is 7～2cm by the wide scope that narrows down by the narrow scope that broadens for the main spiral shell rib (71) of said melt zone leading portion (B1) and the distance of the spiral shell rib between the secondary spiral shell rib (72).
7. extrusion screw rod according to claim 5; It is characterized in that: the main spiral shell rib (71) of said melt zone back segment (B2) and the spiral shell rib between the secondary spiral shell rib (72) are apart from being 5～0cm by the wide scope that narrows down, and the spiral shell rib distance between the whole spiral shell rib of said melt zone back segment (B2) is 2～7cm by the narrow scope that broadens.
8. extrusion screw rod according to claim 1; It is characterized in that: on the end periphery of said extruding zone (E), be distributed with protruding nail piece (6); Said protruding nail piece (6) for many groups at interval and be arranged in parallel, the protruding nail piece (6) in every group is also for equidistantly being distributed on the same periphery at interval.
9. extrusion screw rod according to claim 1; It is characterized in that: the spiral shell rib on the said feed zone (A) is 85～90 ° with the angle (α) between the vertical vertical line in top (1b) of the sideline (1a) of axial section and this sideline (1a), and said spiral shell rib is 0.5mm with the corner radius of the radian (R) on the both sides, sideline (1a) of axial section.
10. according to the described extrusion screw rod of arbitrary claim in the claim 7 to 9, it is characterized in that: the draw ratio of said screw rod is 31: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104381988A CN102490326A (en) | 2011-12-08 | 2011-12-08 | Extrusion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104381988A CN102490326A (en) | 2011-12-08 | 2011-12-08 | Extrusion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102490326A true CN102490326A (en) | 2012-06-13 |
Family
ID=46182205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104381988A Pending CN102490326A (en) | 2011-12-08 | 2011-12-08 | Extrusion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102490326A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106142487A (en) * | 2015-04-20 | 2016-11-23 | 震雄机械（深圳）有限公司 | Jet forming machine and melten gel screw rod thereof |
| CN109666874A (en) * | 2018-12-28 | 2019-04-23 | 广州阿旺斯复合材料技术有限公司 | A kind of high-strength screw rod |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3652064A (en) * | 1968-03-22 | 1972-03-28 | Uniroyal Englebert Ag | Apparatus for conveying plastic material |
| US3687423A (en) * | 1968-12-21 | 1972-08-29 | Werner & Pfleiderer | Continuously operating screw machine for the treatment of plastic masses |
| DE3141993A1 (en) * | 1980-10-22 | 1982-06-16 | Mitsubishi Gas Chemical Co., Inc., Tokyo | DEVICE AND METHOD FOR GRANULATING SODIUM PERCARBONATE |
| US4752136A (en) * | 1986-07-23 | 1988-06-21 | Spirex Corporation | Extruder injection apparatus and method |
| US6497508B1 (en) * | 2001-06-15 | 2002-12-24 | New Castle Industries, Inc. | Plasticating process, apparatus and screw with mixing |
| US20040257904A1 (en) * | 2003-06-19 | 2004-12-23 | Husky Injection Molding Systems Ltd. | Mixer for a plasticizing screw |
| JP2005014272A (en) * | 2003-06-24 | 2005-01-20 | Yokohama Rubber Co Ltd:The | Structure of plasticizing screw for injection blow apparatus |
-
2011
- 2011-12-08 CN CN2011104381988A patent/CN102490326A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3652064A (en) * | 1968-03-22 | 1972-03-28 | Uniroyal Englebert Ag | Apparatus for conveying plastic material |
| US3687423A (en) * | 1968-12-21 | 1972-08-29 | Werner & Pfleiderer | Continuously operating screw machine for the treatment of plastic masses |
| DE3141993A1 (en) * | 1980-10-22 | 1982-06-16 | Mitsubishi Gas Chemical Co., Inc., Tokyo | DEVICE AND METHOD FOR GRANULATING SODIUM PERCARBONATE |
| US4752136A (en) * | 1986-07-23 | 1988-06-21 | Spirex Corporation | Extruder injection apparatus and method |
| US6497508B1 (en) * | 2001-06-15 | 2002-12-24 | New Castle Industries, Inc. | Plasticating process, apparatus and screw with mixing |
| US20040257904A1 (en) * | 2003-06-19 | 2004-12-23 | Husky Injection Molding Systems Ltd. | Mixer for a plasticizing screw |
| JP2005014272A (en) * | 2003-06-24 | 2005-01-20 | Yokohama Rubber Co Ltd:The | Structure of plasticizing screw for injection blow apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106142487A (en) * | 2015-04-20 | 2016-11-23 | 震雄机械（深圳）有限公司 | Jet forming machine and melten gel screw rod thereof |
| CN106142487B (en) * | 2015-04-20 | 2018-09-18 | 震雄机械（深圳）有限公司 | Jet forming machine and its melten gel screw rod |
| CN109666874A (en) * | 2018-12-28 | 2019-04-23 | 广州阿旺斯复合材料技术有限公司 | A kind of high-strength screw rod |
| CN109666874B (en) * | 2018-12-28 | 2020-06-09 | 广州阿旺斯复合材料技术有限公司 | High-strength screw |
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Application publication date: 20120613 |