CN101664983A

CN101664983A - Forming mold

Info

Publication number: CN101664983A
Application number: CN 200810304368
Authority: CN
Inventors: 林后尧; 余盛荣
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2008-09-04
Filing date: 2008-09-04
Publication date: 2010-03-10
Anticipated expiration: 2028-09-04
Also published as: CN101664983B

Abstract

The invention relates to a mold comprising a forming mold insert and a mold temperature pipe mold insert, wherein the forming mold insert is provided with a first surface and a second surface which are opposite, the first surface is provided with a flow passage and a plurality of forming holes communicated with the flow passage, and the second surface is provided with a containing groove; the moldtemperature pipe mold insert comprises a main body part which is contained in the containing groove, the surface of the main body part, which is opposite to the forming mold insert, is provided witha groove used for flowing heating fluids, an inflow hole is arranged in the groove, the groove forms a plurality of flowing paths, and each flowing path corresponds to one forming hole and has equal length.

Description

Mould

Technical field

A kind of mould of the present invention, particularly a kind of mould that is used for the moulding optical element.

Background technology

Product such as optical element such as micro lens, LGP, it adopts injection molding process to make usually.Adopt injection mo(u)lding to enhance productivity greatly and output, reduce cost.See also Multiobjective optimization of aplastic injection molding process, Seaman, C.M., Desrochers, A.A; List, G.F.; Control Systems Technology, IEEE Transactions on Volume 2, Issue 3, Sept.1994 Pages:157-168.

The mould that is used for injection mo(u)lding is provided with mould temperature pipe usually, when mould Wen Guanzhong is connected with when adding hot fluid, can realize in the forming process to temperature controlling, with the quality that promotes shaped article and the efficient of moulding.Yet in the prior art, mould temperature pipe is typically designed to the circulating water temperature pipeline that is surrounded on die.But owing to be the design of loop, along with its temperature that flows of recirculated water reduces gradually.And be the design of raising the efficiency common employing multi-point mould during injection moulding in the prior art, each moulding cave when therefore adopting the design of circular die temperature pipe is because corresponding to the circulating water pipe diverse location, so also difference of the forming temperature in each moulding cave.This kind variations in temperature for example can not cause obvious influence to the quality of product the LGP for thicker optical element.Yet has the slim optical element of mould molding that this kind mould temperature pipe designs for example during thin lens when adopting, since thin lens to variation of temperature very sensitivity be easy in eyeglass to produce current mark and and obtained by molding eyeglass stress concentration, have a strong impact on the quality of thin lens after the moulding.

Summary of the invention

Therefore, be necessary to provide a kind of forming mould that is used for, the mould of even temperature can be provided when shaped article.

The present invention relates to a kind of mould, it comprises: the moulding die, and it has opposite first and second surface, and described first surface is provided with the moulding cave that runner and a plurality of and described runner are communicated with, and offers accepting groove on the described second surface; Mould temperature pipe die benevolence, it comprises main part, described main part is contained in the accepting groove, being provided with for adding the groove that hot fluid flows of described main part with described moulding die facing surfaces, in groove, be provided with ostium, described groove forms many circulation paths, and every circulation path is corresponding to a moulding acupuncture point, and the equal in length of every circulation path.

By adopting above-mentioned mould, when carrying out moulding, route that fluid is flowed through in mould temperature pipe die benevolence and the flow through route of moulding material in runner are parallel to each other, thereby can guarantee the temperature unanimity in each moulding cave, in actual production, the mould temperature when being easy to control moulding.

Description of drawings

Fig. 1 is the stereogram of the mould that provides of the technical program embodiment.

Fig. 2 is the exploded view of the mould that provides of the technical program embodiment.

Fig. 3 is the upward view of the moulding die among Fig. 2.

Fig. 4 is the schematic diagram of the position relation of the mold runner that provides of the technical program embodiment and groove.

Fig. 5 is the schematic diagram of the mould that provides of the technical program embodiment when using.

The specific embodiment

Below in conjunction with drawings and Examples the mould that the technical program embodiment provides is described in further detail.

See also Fig. 1 and Fig. 2, a kind of mould 100 that present embodiment provides, it comprises the die 110 and the Mo Wen pipe die benevolence 120 of mutual engaging

Moulding die 110 has opposite first 111 and second surface 112, and first surface 111 is provided with runner 113 and moulding cave 114.In the present embodiment, at two orthogonal crossing and first sprue 1131 that divide equally mutually and second sprues 1132 of being provided with of first surface 111.In the two ends of first sprue 1131, second sprue 1132 each vertically is extended with two runners 1133 to both sides, so forms eight runners 1133 on the first surface 111 altogether.First sprue 1131 and second sprue 1132 intersect at inflow portion 1134.The equal in length of described eight runners 1133.In the present embodiment, first sprue 1131, second sprue 1132 and runner 1133 are the groove structure that forms to second surface 112 from first surface 111, the shape of described groove structure and the product of desire moulding and the material decision that moulding is used, the cross section of groove can be shape such as semicircle or trapezoidal, in the present embodiment, the cross section of groove can be semicircle.

When treating as the section bar material, flow into runner 1133, flow in the moulding cave 114 by runner 1133 along first sprue 1131 and second sprue 1132 from 1134 inflows of inflow portion.In the present embodiment, it is identical to flow into the distance that the moulding material in each moulding cave 114 flows through.

In the present embodiment, be provided with eight moulding caves 114, moulding cave 114 is positioned at the end of runner 1133 away from corresponding sprue, and is connected with runner 1133.The shape in moulding cave 114 is identical with the shape of the product of desiring moulding.

On the second surface 112 of moulding die 110, offer the accepting groove 116 that extends to first surface 11 1 from second surface 112.The length of accepting groove 116 and width should be greater than the development lengths of

sprue

1131,1132, and accepting groove 116 is provided with over against first sprue 1131, second sprue 1132.In the present embodiment, accepting groove 116 is the cuboid groove, and the length of accepting groove 116 and width are greater than the length of first sprue 1131, second sprue 1132.

Mould temperature pipe die benevolence 120 comprises main part 121 and support portion 122.Main part 121 has surface 123, and surface 123 is a plane, and the shape of the shape of main part 121 and accepting groove 116 is complementary, and main part 121 is along the deep equality of the height and the accepting groove 116 of vertical surface 123.In the present embodiment, main part 121 is rectangular shape.Surface 123 is provided with three first groove 1241, second groove 1242 and three grooves 1243 parallel with first sprue 1131, three four groove 1251, five groove 1252 and six grooves 1253 parallel with second sprue 1132, six grooves are interconnected, and form the structure of matrix pattern.In the center of matrix pattern structure, promptly second groove 1242 and the 5th groove 1252 intersections are provided with ostium 126.Four summits in the matrix pattern structure are provided with four tap holes 127, promptly first groove 1241 respectively with the 4th groove 1251, the 6th groove 1253 intersections, the 3rd groove 1243 is respectively arranged with tap hole 127 with the 4th groove 1251, the 6th groove 123 intersections respectively.

Support portion 122 has first 1221, and main part 121 is formed on first 1221, and promptly main part 121 extends to the direction away from first 1221 from first 1221.Ostium 126 run through main part 121 and support portion 122 and from the support portion 122 side expose, four tap holes 127 also run through main part 121 respectively and from the support portion 122 side expose.

See also Fig. 3, in order to make mould temperature pipe die benevolence 120 have the efficient of high control mould temperature when the actual production, and make that the shaped article variations in temperature in each moulding cave 114 is identical, after the main part 121 of mould temperature pipe die benevolence 120 is contained in accepting groove 116, the surface 123 of main part 121 closely contacts mutually with the inner surface of accepting groove 116, groove is set on the surface 123 cooperates the formation pipeline with the inner surface of accepting groove 116.Consult Fig. 4, engaging back ostium 126 is overlapped on the direction perpendicular to first surface 11 1 with inflow portion 1134, and make that the sprue 1131 and second groove 1242 and the 5th groove 1252 are overlapped, and make eight runners 1132 overlapped with first groove 1241, the 3rd groove 1243, the 4th groove 1251 and the 6th groove 1253 respectively.

See also Fig. 5,1131 enter from central division, flow in the moulding cave 114 along sprue 1131 and runner 1133 as the section bar material.By flowing into from inflow portion 1134, the path that can guarantee to flow into each moulding cave 114 is identical, in actual production, can not produce the problem that the moulding material chargings do not wait in the moulding cave 114.

When carrying out moulding, when adding hot fluid from ostium 126 inflows, flow along forming many circulation paths, each circulation path is all corresponding mutually with the position in a moulding cave 114.Particularly, adding hot fluid flows into from ostium 126, flow into the center of first groove 1241, the 3rd groove 1243, the 4th groove 1251 and the 6th groove 1253 by second groove 1242 and the 5th groove 1252, flowing to four tap holes 127 then respectively flows out, heating liquid from ostium 126 inflows, form eight paths of flowing through altogether, each path is corresponding with a moulding cave 114, and liquid flow to the location paths equal in length of moulding cave 114 correspondences from ostium 126, and many circulation paths are the center setting that is centrosymmetric with ostium 126.Therefore, the route that fluid is flowed through in mould temperature pipe die benevolence is consistent with the flow through route of moulding material in runner, thereby can guarantee the temperature unanimity in each moulding cave, in actual production, and the mould temperature when being easy to control moulding.

Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.

Claims

1. mould, it comprises:

The moulding die, it has opposite first and second surface, and described first surface is provided with the moulding cave that runner and a plurality of and described runner are communicated with, and offers accepting groove on the described second surface;

Mould temperature pipe die benevolence, it comprises main part, described main part is contained in the accepting groove, be provided with for adding the groove that hot fluid flows at described main part and described moulding die facing surfaces, be provided with ostium in groove, it is characterized in that, described groove forms many circulation paths, every circulation path is corresponding to a moulding cave, and the equal in length of every circulation path.

2. mould as claimed in claim 1 is characterized in that, described many circulation paths are the center setting that is centrosymmetric with described ostium.

3. mould as claimed in claim 1 is characterized in that, described circulation path is overlapping on the direction perpendicular to first surface with corresponding runner.

4. mould as claimed in claim 1, it is characterized in that, described runner comprises that first sprue reaches the runner that links to each other with them with second sprue, described first sprue is vertical with second sprue and divide equally mutually, described runner is formed at the two ends of first sprue and second sprue, along extending perpendicular to the direction that is connected sprue with it, described moulding cave is arranged at the end of runner away from sprue, and is interconnected with runner.

5. mould as claimed in claim 4 is characterized in that, describedly ostium is set and inflow portion is overlapped on the direction perpendicular to first surface.

6. mould as claimed in claim 4 is characterized in that, described sprue is provided with two runners away from an end of central part, and two runners are located along the same line, and also connected sprue is vertical mutually.

7. mould as claimed in claim 6 is characterized in that, described runner equates that with the distance of central part the development length of each runner equates.

8. mould as claimed in claim 1, it is characterized in that, described groove comprises first groove, second groove and the 3rd groove and the 4th groove, the 5th groove and the 6th groove parallel with second sprue and that be arranged in order parallel with first sprue and that be arranged in order, described six grooves intersect mutually and are interconnected, form the structure of matrix pattern, in second groove and the 5th groove intersection, be provided with ostium, first groove and the 4th groove and the 6th groove intersection, the 3rd groove and the 4th groove and the 6th groove intersection are respectively arranged with tap hole.

9. mould as claimed in claim 8, it is characterized in that, described runner is overlapped on the direction perpendicular to first surface with first groove, the 3rd groove, the 4th groove and the 6th groove respectively, second groove and first sprue are overlapped on the direction perpendicular to first surface, and the 5th groove and second sprue are overlapped on the direction perpendicular to first surface.

10. mould as claimed in claim 1 is characterized in that the internal diameter of described groove is greater than the internal diameter of runner.