CN202174712U - Screw rod used on injection machine - Google Patents
Screw rod used on injection machine Download PDFInfo
- Publication number
- CN202174712U CN202174712U CN2011202230673U CN201120223067U CN202174712U CN 202174712 U CN202174712 U CN 202174712U CN 2011202230673 U CN2011202230673 U CN 2011202230673U CN 201120223067 U CN201120223067 U CN 201120223067U CN 202174712 U CN202174712 U CN 202174712U
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- Prior art keywords
- screw rod
- section
- screw
- zone
- injection machine
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- 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.)
- Expired - Fee Related
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Abstract
A screw rod used on an injection machine comprises a feeding section (A), a melting section (B), a homogenizing section (C) and an extrusion section (E), wherein screw edges (1) are arranged on the feeding section (A), the melting section (B) and the homogenizing section (C). The screw rod is characterized in that the extrusion section (E) comprises three parts, wherein the front part (E1) is a conical head part with a taper (Alpha), the tail part (E3) is a screw rod with screw edges, and the middle part (E2) is a screw thread with a slope (Beta). Compared with the prior art, the screw rod used on the injection machine has the advantages that material is preheated, compacted and conveyed at the feeding section, so as to make a preparation for the material to convert from a solid state into a molten state smoothly and uniformly; the material is further compacted and plasticized at the melting section, so that the material can uniformly convert from the solid state to the molten state; the material is further plasticized and homogenized at the homogenizing section; and the technical effects of smooth surface of the material, discharging smoothness and no scorched material are achieved at the extrusion section.
Description
Technical field
The utility model relates to a kind of manufacture technology field, especially refers to a kind of screw rod that is used on the injection machine.
Background technology
In the prior art; Screw injection molding machine is made up of injecting systems, matched moulds system, Hydraulic Power Transmission System, electric control system, lubricating system, heating and cooling system, safety monitoring system etc. usually; Wherein injecting systems is one of topmost part; And in injecting systems, screw rod then is one of parts of most critical.
Along with the plastic industrial expansion, injection machine has also experienced update again and again, and its most important composition system--injecting systems, has also accepted human weeding out the old and bring forth the new again and again undoubtedly.It is existing that nowadays still the injecting systems in practicality has only three kinds of plunger types, screw, screw rod preformed plunger injection formula, and most widely used be screw.Its effect is in a circulation of injection molding material machine, can in official hour behind the plastics heating plasticizing with some, under certain pressure and speed, through screw rod molten plastic be injected mold cavity.After injection finishes, the melt that is expelled in the die cavity is kept typing.But common screw in application, inevitably run into beat on the PVC material occur rough, problem such as discharging is not fast, this has strengthened the cost of material of enterprise undoubtedly, has also reduced the quality of commodity simultaneously.
Existing a kind of patent No. discloses a kind of structure for the Chinese utility model patent that the CN201020139839.0 name is called " special low-grade plastic screw rod for caster "; Its structure is made up of feeding section, melt zone, homogenizing zone, mixing extruding zone; Screw head in the screw in injection molding machine is connected with thrust ring, and its characteristic has been saved the mixing refining head of conventional screw.This screw rod is owing to adjusted the length ratio between each section, the data of groove depth; And the body portion at screw head has increased step and has formed groove; Increased the bar axial notch; Therefore strengthened the circulation area of screw head, made " low-grade plastic " smooth and easy circulation between the barrel screw rod, made extend to 8-10 month the service life of screw rod.Yet this screw rod is not enough in the finished-product material surface flatness, occurs burnt material phenomenon easily, and therefore the quality to finished product improves few; Moreover, only being applicable to that the PVC of low-grade plastic produces, its scope of application is narrower.In order to realize this goal, our company carries out years of researches to screw rod, and through after the manufacturing of repeated multiple times and using, it is smooth successfully to develop a kind of PVC material surface that makes aborning finally, and discharging is happy, and burnt material is not used for the screw rod on the injection machine.
Summary of the invention
The utility model technical problem to be solved is to provide a kind of PVC material surface that can make smooth to above-mentioned prior art present situation, and discharging is happy, not a kind of screw rod that is used on the injection machine of burnt material.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: originally be used for the screw rod on the injection machine; Include feeding section, melt zone, homogenizing zone, extruding zone composition; Said feeding section, melt zone, homogenizing zone are provided with the spiral shell rib, it is characterized in that: said extruding zone is made up of three parts, and anterior tapering is a conical head; Afterbody is the screw rod that has the spiral shell rib, and the middle part has the screw thread of gradient for the surface.
As improvement, the angle that the spiral shell rib of said feeding section and screw rod horizontal line form is 120 °.
Improve, said tapering is 60 ° again.
Improve, said gradient is 75 ° again.
Improve, the pitch of said extruding zone middle part surface screw thread is 8-9mm again.
Improve, the diameter of said spiro rod length and spiral shell rib is in a ratio of L: D=2400: 90 again.
Improve, one of said screw rod charging is provided with the groove that is used for plug-in card again.
Compared with prior art, the advantage of the utility model is that extruding zone is made up of three parts, and the front portion is the conical head of 60 ° of taperings, and afterbody is the screw rod that has the spiral shell rib, and the surface at middle part has 75 ° of screw threads of gradient.Adopt its advantage of screw rod of said structure to be: at feeding section: make material carry out preheating, compacting and conveying, for material ready from the solid-state molten condition that is converted into equably smoothly; At melt zone: make further compacting of material and plasticizing, make material equably from the solid-state molten condition that is converted into, this section is solid and the molten mass and the section of depositing; Homogenizing zone: can make material further plasticizing and homogenising; Realize that at extruding zone the PVC material surface is smooth, discharging is happy, not the technique effect of burnt material.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the enlarged drawing of I portion among Fig. 1;
Fig. 3 is the profile of F-F line among Fig. 1.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Extremely shown in Figure 3 like Fig. 1; Present embodiment be used for the screw rod on the injection machine; Include feeding section A, melt zone B, homogenizing zone C, extruding zone E composition, said feeding section A, melt zone B, homogenizing zone C are provided with spiral shell rib 1, and said extruding zone E is made up of three parts; Anterior E1 tapering is the conical head of α, and this tapering α is 60 °.Afterbody E3 is the screw rod that has the spiral shell rib, and middle part E2 has the screw thread that gradient is β for the surface.This gradient β is 75 °.The spiral shell rib 1 of said feeding section A is 120 ° with the angle γ that screw rod 2 horizontal lines form.The pitch S of E2 thread surface is 8-9mm at the extruding zone middle part, specifically also can decide by design.Screw rod 2 length L of present embodiment and the diameter D of spiral shell rib 1 are in a ratio of L: D=2400: 90.One of screw rod 2 charging are provided with the groove 21 that is used for plug-in card.
Claims (7)
1. screw rod that is used on the injection machine; Include feeding section (A), melt zone (B), homogenizing zone (C), extruding zone (E) composition; Said feeding section (A), melt zone (B), homogenizing zone (C) are provided with spiral shell rib (1), it is characterized in that: said extruding zone (E) is made up of three parts, and anterior (E1) tapering is the conical head of (α); Afterbody (E3) is for having the screw rod of spiral shell rib, and middle part (E2) has the screw thread of gradient (β) for the surface.
2. screw rod according to claim 1 is characterized in that: the spiral shell rib (1) of said feeding section (A) is 120 ° with the angle (γ) that screw rod (2) horizontal line forms.
3. screw rod according to claim 1 is characterized in that: said tapering (α) is 60 °.
4. screw rod according to claim 1 is characterized in that: said gradient (β) is 75 °.
5. screw rod according to claim 1 is characterized in that: the pitch (S) of said extruding zone middle part (E2) thread surface is 8-9mm.
6. according to the described screw rod of arbitrary claim in the claim 1 to 5, it is characterized in that: said screw rod (2) length (L) is in a ratio of L: D=2400 with the diameter (D) of spiral shell rib (1): 90.
7. according to the described screw rod of arbitrary claim in the claim 1 to 5, it is characterized in that: one of said screw rod (2) charging is provided with the groove (21) that is used for plug-in card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202230673U CN202174712U (en) | 2011-06-26 | 2011-06-26 | Screw rod used on injection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202230673U CN202174712U (en) | 2011-06-26 | 2011-06-26 | Screw rod used on injection machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202174712U true CN202174712U (en) | 2012-03-28 |
Family
ID=45864614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202230673U Expired - Fee Related CN202174712U (en) | 2011-06-26 | 2011-06-26 | Screw rod used on injection machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202174712U (en) |
-
2011
- 2011-06-26 CN CN2011202230673U patent/CN202174712U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20120626 |