CN201931593U - Improvement on runner structure of injection die - Google Patents
Improvement on runner structure of injection die Download PDFInfo
- Publication number
- CN201931593U CN201931593U CN2011200429926U CN201120042992U CN201931593U CN 201931593 U CN201931593 U CN 201931593U CN 2011200429926 U CN2011200429926 U CN 2011200429926U CN 201120042992 U CN201120042992 U CN 201120042992U CN 201931593 U CN201931593 U CN 201931593U
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- Prior art keywords
- sprue
- diameter
- bore
- secondary fluid
- fluid course
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Abstract
The utility model provides improvement on a runner structure of an injection die. Components of the runner structure, which are formed by the injection die, contain a bushing, a hot flow plate and at least one pouring nozzle. The runner structure comprises a filling port, a main runner, at least one secondary runner and at least one hot pouring gate according to the flowing sequence of injected plastic. The diameter of an inner hole of the main runner is required to be larger than the diameter of an inner hole of the secondary runner. The diameter of the inner hole of the secondary runner is required to be larger or equal to the diameter of an inner hole of the hot pouring gate. The improved runner structure has the beneficial effect that the problems of burr and material overflow due to die expansion are solved so that the qualification rate of the product is improved.
Description
Technical field
The utility model relates to a kind of flow passage structure of mould, refers to a kind of flow passage structure that improves the jetting mold of flash problem especially.
Background technology
As shown in Figure 3, the flow passage structure for existing jetting mold comprises a sprue 90, secondary fluid course 91 and hot runner 92, and wherein the diameter of bore of this sprue 90, secondary fluid course 91 and hot runner 92 is rough identical.Plastics are when shooting material, be after plastics are heated to the fluid state of fusion, to inject sprue 90 by the screw rod start of ejaculator, plastics enter sprue each secondary fluid course 91 that branches to after 90s, flow into hot runner 92 by each secondary fluid course 91 again, and inject in the die cavity by hot runner 92 ends.
Yet, plastics are to be shot material by the active force that screw rod advances in ejaculator, because the sprue 90 in the flow passage structure, secondary fluid course 91, and the diameter of bore of hot runner 92 is slightly identical approximately, and the diameter of bore of the material pipe of the ccontaining plastics of ejaculator on ratio greater than the diameter of bore in the flow passage structure many (on ratio rough can with the material pipe liken the syringe of having an injection to, and flow passage structure can be likened syringe needle to), so when plastics enter sprue 90 in this active force propelling and by the material pipe, because of diameter of bore moment of stream of plastic warp dwindles, thereby produce great reaction force, and if the flow velocity that shoots material of ejaculator is set when very fast, plastics more have little time to be penetrated by flow passage structure this moment, the reaction force that causes shooting material can't disappear immediately and produce the hold mode phenomenon, this moment, the plastics in mould then produced flash, make the finished product of moulding produce burr, this is the emphasis place that the utility model institute desire solves.
The utility model content
The purpose of this utility model is to improve the deficiencies in the prior art, and a kind of flow passage structure that improves the jetting mold of flash problem is provided.
For achieving the above object, the utility model is by the following technical solutions:
A kind of flow passage structure improvement of jetting mold, the member that this jetting mold forms this flow passage structure comprises a lining, a heat flux plates, reaches at least one pouring mouth, this lining is combined in a side of this heat flux plates, heat flux plates is then in this at least one pouring mouth of opposite side butt, and this flow passage structure comprises by the order of flowing through that plastics penetrate:
One sprue is arranged in described lining, is the inlet that shoots material;
One sprue is arranged in described heat flux plates, and the top of this sprue is communicated with the sprue of this lining, and the terminal position of sprue is in heat flux plates;
At least one secondary fluid course, this top of stating secondary fluid course is made of end difference in heat flux plates of sprue respectively;
At least one hot runner, respectively the position is in described at least one pouring mouth, and this hot runner of stating runs through this pouring mouth, the end of described at least one secondary fluid course then with the corresponding connection in top of this at least one hot runner, this end of stating hot runner is the outlet that shoots material;
The diameter of bore of described sprue must be greater than the diameter of bore of described at least one secondary fluid course, and the diameter of bore of described at least one secondary fluid course must be more than or equal to the diameter of bore of described at least one hot runner.
The beneficial effects of the utility model are: improve the problem that causes burr and flash because of hold mode, thereby improve product percent of pass.
Description of drawings
Fig. 1 is the flow passage structure allocation plan of the utility model embodiment.
Fig. 2 is the schematic diagram of the flow passage structure of the utility model embodiment for plastic flow.
Fig. 3 is the flow passage structure allocation plan of existing jetting mold.
The specific embodiment
Seeing also Fig. 1, Fig. 2, is the selected example structure of the utility model shown in the figure, and this only for the usefulness of explanation, is not subjected to the restriction of this kind structure in patent application.
The utility model provides a kind of flow passage structure improvement of jetting mold, as shown in Figure 1, the member that the jetting mold of present embodiment forms this flow passage structure comprises a lining 1, one heat flux plates 2, and two pouring mouths 3, this lining 1 is combined in a side of this heat flux plates 2,2 of heat flux plates are in this two pouring mouth 3 of opposite side butt, this flow passage structure 4 comprises a sprue 40 by the order of flowing through that plastics penetrate, one sprue 41, two secondary fluid courses 42, and two hot runner 43, the diameter of bore of this sprue 41 must be greater than the diameter of bore of this two secondary fluid course 42, and the diameter of bore of this two secondary fluid course 42 must be more than or equal to the diameter of bore of this two hot runner 43.
Aforesaid sprue 40, it is to be arranged in this lining 1, is the inlet that shoots material.
Aforesaid sprue 41, it is arranged in this heat flux plates 2, and the top 410 of this sprue 41 is communicated with the sprue 40 of this lining 1, and 411 of the ends of sprue 41 are in heat flux plates 2.Sprue 41 described in the utility model, the scope of its diameter of bore are best at 13～30 millimeters (mm).
Aforesaid two secondary fluid courses 42, the top 420 of each secondary fluid course 42 are made of end 411 difference in heat flux plates 2 of sprue 41 respectively.Secondary fluid course 42 of the present utility model, its diameter of bore scope are at 10～25 millimeters (mm), and secondary fluid course 42 is the best with the diameter of bore scope of this diameter of bore scope collocation sprue 41.
Aforesaid two hot runners 43, difference position are in this two pouring mouth 3, and each hot runner 43 runs through its pouring mouth 3,421 top 430 corresponding connections of two hot runners 43 therewith of the end of this two secondary fluid course 42, the outlet of end 431 for shooting material of each hot runner 43.Hot runner 43 of the present utility model, its diameter of bore scope are at 6～25 millimeters (mm), and this hot runner 43 is the best with the diameter of bore scope of this diameter of bore scope collocation secondary fluid course 42.
As shown in Figure 2, for plastics are injected flow passage structure by the material pipe of ejaculator, its stream of plastic has bigger circulation aperture when sprue 41, circulation aperture when flowing into secondary fluid course 42 dwindles, the opening that then dwindles again with secondary fluid course 42 when flowing through hot runner 43 more directly flows, and the hot runner 43 of present embodiment is by the diameter of bore convergent of top 430 towards end 431.When so plastics are injected flow passage structure via the material pipe of ejaculator, because sprue 41 has bigger circulation aperture, and secondary fluid course 42 of flowing through and hot runner 43 have the circulation aperture of convergent, so the screw rod of ejaculator advances the reaction force that plastics produced, can in flow passage structure, be transferred gradually and disappear, cause hold mode so can avoid the reaction force of moment to promote, cause the problem of burr and flash because of hold mode thereby be improved, the finished product that further can promote ejection formation is made qualification rate.
In the diameter of bore scope of aforesaid sprue 41 and secondary fluid course 42, though the minimum of a value of the diameter of bore scope of sprue 41 is less than the maximum of the diameter of bore of this secondary fluid course 42, but the collocation of the diameter of bore of sprue 41 of the present utility model and secondary fluid course 42, must follow the diameter of bore of sprue 41 greater than secondary fluid course 42, and secondary fluid course 42 is more than or equal to the principle of hot runner 43, when so the diameter of bore of sprue 41 is the minimum of a value of its scope, the diameter of bore of this secondary fluid course 42 must be littler than the diameter of bore of sprue 41 minimum of a values, meet flow passage structure design principle of the present utility model, in these supplementary notes.
The announcement of the above embodiment is in order to explanation the utility model, is not in order to restriction the utility model, so the displacement of the change of numerical value or equivalence element must be subordinate to category of the present utility model such as.
By above detailed description, can make the clear the utility model of those skilled in the art can reach aforementioned purpose really, the real regulation that has met Patent Law proposes patent application then.
Claims (1)
1. the flow passage structure of jetting mold improvement, it is characterized in that: the member that aforesaid jetting mold forms this flow passage structure comprises a lining, a heat flux plates, reaches at least one pouring mouth, this lining is combined in a side of this heat flux plates, heat flux plates is then in this at least one pouring mouth of opposite side butt, and this flow passage structure comprises by the order of flowing through that plastics penetrate:
One sprue is arranged in described lining, is the inlet that shoots material;
One sprue is arranged in described heat flux plates, and the top of this sprue is communicated with the sprue of this lining, and the terminal position of sprue is in heat flux plates;
At least one secondary fluid course, this top of stating secondary fluid course is made of end difference in heat flux plates of sprue respectively;
At least one hot runner, respectively the position is in described at least one pouring mouth, and this hot runner of stating runs through this pouring mouth, the end of described at least one secondary fluid course then with the corresponding connection in top of this at least one hot runner, this end of stating hot runner is the outlet that shoots material;
The diameter of bore of described sprue must be greater than the diameter of bore of described at least one secondary fluid course, and the diameter of bore of described at least one secondary fluid course must be more than or equal to the diameter of bore of described at least one hot runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200429926U CN201931593U (en) | 2011-02-21 | 2011-02-21 | Improvement on runner structure of injection die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200429926U CN201931593U (en) | 2011-02-21 | 2011-02-21 | Improvement on runner structure of injection die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201931593U true CN201931593U (en) | 2011-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200429926U Expired - Fee Related CN201931593U (en) | 2011-02-21 | 2011-02-21 | Improvement on runner structure of injection die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201931593U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128931A (en) * | 2011-11-28 | 2013-06-05 | 马斯特模具（昆山）有限公司 | Novel pouring mold |
| CN106696199A (en) * | 2016-12-15 | 2017-05-24 | 苏州工业园区协利塑胶有限公司 | Glue feed improving nozzle of narrow long hollow pipe fitting injection mould |
-
2011
- 2011-02-21 CN CN2011200429926U patent/CN201931593U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128931A (en) * | 2011-11-28 | 2013-06-05 | 马斯特模具（昆山）有限公司 | Novel pouring mold |
| CN106696199A (en) * | 2016-12-15 | 2017-05-24 | 苏州工业园区协利塑胶有限公司 | Glue feed improving nozzle of narrow long hollow pipe fitting injection mould |
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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: 20110817 Termination date: 20130221 |