CN202480327U

CN202480327U - Injection mold

Info

Publication number: CN202480327U
Application number: CN2012200023828U
Authority: CN
Inventors: 黎健明; 吴小平; 黄锦照
Original assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Current assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Priority date: 2012-01-05
Filing date: 2012-01-05
Publication date: 2012-10-10
Anticipated expiration: 2022-01-05

Abstract

The utility model provides an injection mold, which comprises an upper die and a lower die, wherein the upper die and lower die are mutually and correspondingly matched; the upper die comprises an upper fixing plate and an upper template; a filling groove is arranged on the upper template; the filling groove is convexly provided with a columnar upper mold core; a first runner is arranged on the upper mold core; a groove is arranged on the lower bottom surface of the upper mold core; the lower die comprises a lower template; a columnar lower mold core is convexly arranged on the lower template; the lower mold core extends into the filling groove when the die is assembled; the lower mold core and the groove are encircled a second runner communicated with the first runner; the upper template, the upper mold core, the lower template and the lower mold core are encircled to form a cavity for molding a product, and an annular glue inlet is formed at the joint between the cavity and the second runner. The injection mold provided by the utility model prevents the product from generating a joint trace by adopting a circumferential glue-feeding mode, thereby reducing the phenomena that the product cracks and the mold is not full, and improving the product yield.

Description

Injection mold

Technical field

The utility model relates to a kind of mould, relates in particular to a kind of injection mold.

Background technology

Injection molding is that a large amount of a kind of modes of production of using are gone up in industry at present; The design of cast gate is particularly important in the structural design of injection mold; Wherein common cast gate design comprises a burning mouth, side gate and spoke type cast gate, generally according to requirement of products design cast gate type.

Yet the gate form of above-mentioned injection mold need be by a plurality of glue-feeders of being provided with of circumferential arrangement when the plastic product of injection moulding ring-type; When advancing glue; Occur easily on the product combining trace, even unsaturated cracking occurs, and be unfavorable for improving production efficiency of products and product yield.

The utility model content

The purpose of the utility model is with deficiency a kind of injection mold that trace appears combining in product that reduces to be provided to the defective that prior art exists.

For realizing above-mentioned purpose, the utility model injection mold comprises the upper die and lower die of mutual corresponding matching.Patrix comprises upper mounted plate, cope match-plate pattern; The lower surface of cope match-plate pattern offers a material filling groove; The groove roof of material filling groove in the material filling groove, convex with one be column upper cores; Upper cores penetratingly offers a first flow up and down, and the bottom surface of upper cores upwards is recessed to form the groove that a groove end face is cambered surface lid shape; Counterdie comprises lower bolster; The corresponding material filling groove of the upper surface of lower bolster is convex be provided with one be column following die, during matched moulds, following die stretches in the material filling groove; The upper surface of following die and the groove of upper cores surround second runner that is connected with first flow; Die surrounded the die cavity that is used for shaped article under cope match-plate pattern, upper cores and lower bolster reached, and second runner is connected with die cavity, and the junction of the die cavity and second runner forms the glue-feeder of an annular.

In sum; The utility model injection mold surrounds runner by patrix and counterdie, and runner comprises the first flow and second runner, and second runner is connected with die cavity; And the junction of the die cavity and second runner forms the glue-feeder of an annular; Through adopting ring to advance the glue design week, make when into the glue machine advances glue toward die cavity in and can equilibrium advance glue, to prevent and to avoid single-point to advance glue or multiple spot and advance glue and cause product the combination trace to occur; Thereby reduce the phenomenon of product cracking and insatiable hunger mould, improve production efficient and product yield.

Description of drawings

Sketch map when Fig. 1 advances glue for the utility model injection mold.

Fig. 2 is the sketch map of the utility model injection mold.

Fig. 3 is an A enlarged diagram partly shown in Figure 2.

Each description of reference numerals is following among the figure.

Upper mounted plate 10 cope match-plate patterns 20

Upper cores 21 first flows 22

Groove 23 lower bolsters 30

Following die 31 is irritated mouth 40

Advance solation road 41 second runners 50

Glue-feeder 51 die cavities 60

Product 70.

The specific embodiment

Be to specify technology contents, structural feature, the purpose of being reached and the effect of the utility model, below give an example now embodiment and cooperate the graphic detailed explanation of giving.

See also Fig. 1, the utility model injection mold comprises the patrix (not indicating among the figure) and the counterdie (not indicating among the figure) of mutual corresponding matching, and patrix comprises upper mounted plate 10, cope match-plate pattern 20 and irritate mouth 40 that counterdie comprises lower bolster 30.Said upper mounted plate 10, cope match-plate pattern 20, lower bolster 30 set gradually from top to bottom, and said filling mouth 40 is fixed on the upper mounted plate 10 and stretches in the cope match-plate pattern 20, and this injection mold is used for moulding product 70 in the form of a ring.

See also Fig. 1, Fig. 2 and Fig. 3; The lower surface of cope match-plate pattern 20 offers a material filling groove (not indicating among the figure); The groove roof of material filling groove in the material filling groove, convex with one be column upper cores 21; Upper cores 21 penetratingly offers a first flow 22 up and down, and the bottom surface of upper cores 21 upwards is recessed to form the groove 23 that a groove end face is cambered surface lid shape.And irritate mouth 40 be provided be used to glue into enter solation road 41, first flow 22 is connected with the solation road 41 that advances of filling mouth 40.

Please continue and consult Fig. 1, Fig. 2 and Fig. 3; The convex die 31 that is provided with of the corresponding material filling groove of the upper surface of said lower bolster 30, following die 31 also is column, during matched moulds; Following die 31 stretches in the material filling groove; The upper surface of following die 31 and the groove 23 of upper cores 21 surround second runner, 50, the second runners 50 that are connected with first flow 22 and are and cover shape, and cope match-plate pattern 20, upper cores 21, lower bolster 30, die 31 surrounds the die cavity 60 that is used for shaped article 70 down.First flow 22 and second runner, 50 synthetic runners, second runner 50 is connected with die cavity 60, and the junction of the die cavity 60 and second runner 50 forms the glue-feeder 51 of an annular.

Please continue and consult Fig. 1, Fig. 2 and Fig. 3; During shaped article 70; Injection machine is through irritating mouth 40 injection mouldings in the die cavities 60, and the stream of plastic of fusion is crossed the first flow 22 and second runner 50, and the 51 pairs of die cavities 60 of glue-feeder through annular encircle week and advance glue again; Under the injection pressure effect of injection machine, plastics fully fill up die cavity 60.After product 70 moulding, ejecting mechanism ejects product 70 and waste material, adopts the technology of cutting that product 70 is separated with waste material, takes out product 70.

Notably, the volume of die 31 can be provided with according to the space size of injection mold and the specification of product under the material filling groove of the utility model injection mold, upper cores 21 reached.

In sum; The utility model injection mold surrounds runner by patrix and counterdie, and runner comprises that first flow 22 and second runner, 50, the second runners 50 are connected with die cavity 60; And the junction of the die cavity 60 and second runner 50 forms the glue-feeder 51 of an annular; Through adopting ring to advance the glue design week, make when into the glue machine advances glue toward die cavity 60 in and can equilibrium advance glue, to prevent and to avoid single-point to advance glue or multiple spot and advance glue and cause product 70 the combination traces to occur; Thereby reduce the phenomenon of product 70 crackings and insatiable hunger mould, improve product 70 production efficiencys and product yield.

Claims

1. an injection mold is made up of the patrix and the counterdie of mutual corresponding matching, wherein; Patrix comprises upper mounted plate, cope match-plate pattern; Counterdie comprises lower bolster, it is characterized in that: the lower surface of said cope match-plate pattern offers a material filling groove, the groove roof of material filling groove in the material filling groove, convex with one be column upper cores; Upper cores penetratingly offers a first flow up and down, and the bottom surface of upper cores upwards is recessed to form the groove that a groove end face is cambered surface lid shape; The corresponding material filling groove of the upper surface of said lower bolster is convex be provided with one be column following die; During matched moulds; Following die stretches in the material filling groove, and the upper surface of following die and the groove of upper cores surround second runner that is connected with first flow, cope match-plate pattern, upper cores and lower bolster and down die surround the die cavity that is used for shaped article; Second runner is connected with die cavity, and the junction of the die cavity and second runner forms the glue-feeder of an annular.

2. injection mold as claimed in claim 1 is characterized in that: said patrix also comprises and is fixed on the upper mounted plate and stretches to the filling mouth in the cope match-plate pattern, irritate mouth be provided be used to glue into enter the solation road, said first flow is connected with the solation road that advances of filling mouth.