CN205272512U

CN205272512U - Injection mold

Info

Publication number: CN205272512U
Application number: CN201521065407.9U
Authority: CN
Inventors: 杨鸥
Original assignee: Zhejiang Nuoge Automobile Mould Co Ltd
Current assignee: Zhejiang Nuoge Automobile Mould Co Ltd
Priority date: 2015-12-18
Filing date: 2015-12-18
Publication date: 2016-06-01
Anticipated expiration: 2025-12-18

Abstract

The utility model discloses an injection mold, including die cavity board and core board, the core board has a plurality of moulded product's die cavity, is provided with the mold insert in the die cavity, has offered the sprue on the core board, and the sprue intercommunication has the first subchannel with the die cavity intercommunication, and is provided with the transition runner between sprue and first subchannel, and first subchannel is the arc setting with the transition runner, the die cavity internal fixation has first shaping piece, be provided with the second subchannel with first subchannel intercommunication on first shaping piece, wherein be provided with the runner of hiding with the die cavity intercommunication on the second subchannel, the injection molding material who is shunted out by the sprue is accepted to the subchannel and the transition runner of arc setting, injection molding material avoids owing to handing over boundary point to locate to condense injection molding material when shunting perpendicularly, combine the air escape of each overflow mouth in with each runner, make injection molding material can evenly enter into in the runner of hiding of die cavity intercommunication, do not influence moulded product's outward appearance during the even feeding drawing of patterns.

Description

A kind of injection mold

Technical field

This utility model relates to a kind of injection mold.

Background technology

A kind of processing method that injection mo(u)lding is used when being and produce some complex-shaped parts in batches, and injection mold is a kind of instrument producing plasthetics.

Bottle cap in the market or the moulding (such as the moulding of a kind of similar bottle cap shown in Fig. 7) of similar bottle cap, can deviate from the injection molding material with cast gate place when the demoulding in injection mo(u)lding simultaneously, and these need follow-up artificial cleaning due to the additional injection molding material taken out of when product stripping, reduce production efficiency, depart from secondly less for bottle cap or similar bottle cap part average physique, for raising production efficiency, die cavity is arranged to multi-cavity type and is easy to after an injection moulding to produce multiple moulding, the Design of Dies of this multi-cavity mold formula is the mode of raising production efficiency relatively conventional in the market, on die cavity with core, sprue is offered owing to the design of multi-cavity type is corresponding, injection molding material is brought in the cavity producing to be formed by a plurality of sub-runner by sprue, sub-runner is generally vertical shunting with sprue, i.e. sub-runner angle in 90 �� vertical with sprue, and this design be only consider mould easy to process on, owing to injection molding material enters from note cast gate at high temperature under high pressure, injection molding material is easily more with the cohesion of the point of interface place of sub-runner at sprue, affect the flowing in sub-runner of the follow-up injection molding material come in, reduce the quality produced.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model be in that to provide a kind of injection molding material can in runner steady flow and can the injection mold of demoulding quality.

For achieving the above object, this utility model provides following technical scheme: a kind of injection mold, including cavity plate and core plate, described core plate has the die cavity of multiple shaped article, is provided with mold insert, described core plate offers sprue in die cavity, described sprue is communicated with the first sub-runner, first sub-runner connects with die cavity, and is provided with transition runner between sprue and the first sub-runner, and described first sub-runner and transition runner are arc and arrange; It is fixed with the first forming blocks in described die cavity, the first forming blocks is provided with the second sub-runner connected with the first sub-runner, wherein the second sub-runner is provided with the tunnel gate connected with die cavity.

By adopting technique scheme, injection molding material enters from note cast gate, flow to the transition runner that sprue arranged by arc and slowly the injection molding material in sprue is transitioned in sub-runner, and sub-runner is similarly arranged to arc, accepting the injection molding material that transition runner flows through, on same the second sub-runner slowly flowed on the first forming blocks, enter in die cavity by the tunnel gate connected with the second sub-runner, shaped article, utilize the sub-runner that arc is arranged in conjunction with tunnel gate, injection molding material uniformly to be flowed in runner and play a good shunting action, Uniform Flow injection molding material in runner enters in cast gate, improve the product quality of injection mo(u)lding.

As preferably, described cast gate is set to tunnel gate.

By adopting technique scheme, substitute common cast gate injecting products and make the injection molding material at automatic breaking cast gate place in knockout course, do not affect product appearance, promote the quality of injection molding product further.

As preferably, described first sub-runner is symmetrically arranged with twice, and described second sub-runner symmetry equally has two.

By adopting technique scheme, injection molding material point twice are flowed in die cavity, first accelerate the injection mo(u)lding time, are injected simultaneously into so that uniform shaped article secondly by two runners, improve formed product quality.

As preferably, the sprue two ends of described core are communicated with the first overfall, and described first overfall is communicated with first row air drain.

By adopting technique scheme, being discharged from the first overfall by the air in core sprue, be in communication with the outside by first row air drain and gas is discharged to the external world, secondly first row air drain can hold the injection molding material overflowed by the first overfall.

As preferably, described first forming blocks offering the second overfall, described second overfall is communicated with second row air drain, and described core plate offers the 3rd air discharge duct connected with second row air drain.

By adopting technique scheme, type chamber air is discharged by arranging of the second overfall, also passes through second row air drain and the 3rd air discharge duct is in communication with the outside and air is discharged to the external world, and holds the injection molding material overflowed by die cavity.

As preferably, the end of the first sub-runner of described cavity plate is communicated with the 3rd overfall, and the 3rd overfall is communicated with the 4th air discharge duct.

By adopting technique scheme, air in first forming blocks is discharged from the 3rd overfall, it is in communication with the outside through the 4th air discharge duct and the air in the first forming blocks is discharged to the external world, and hold the second sub-runner by the first forming blocks and the injection molding material of the first sub-runner spilling.

As preferably, described cavity plate offering the cavity identical with die cavity quantity, described mold insert is inserted in cavity, is fixed with multiple second forming blocks in the circumference of cavity, and the radial direction in the second forming blocks is provided with projection, and this projection is placed in cavity.

By adopting technique scheme, utilize the projection arranged in the second forming blocks that the product of injection mo(u)lding is slotted in the circumferential.

As preferably, the top of described second forming blocks offers the 4th overfall, and the 4th overfall is communicated with the 5th air discharge duct.

By adopting technique scheme, the air in the cavity in cavity plate is discharged by the 4th overfall.

Compared with prior art, the utility model has the advantage of: the sub-runner that arc is arranged accepts, with transition runner, the injection molding material being diverted by sprue, avoid owing to injection molding material condenses injection molding material when vertical shunting at point of interface place, in conjunction with each overfall, the air in each runner is discharged, make the injection molding material can even into, in the tunnel gate connected to die cavity, not affecting the outward appearance of shaped article during the uniform feeding demoulding.

Accompanying drawing explanation

Fig. 1 is the structural representation of cavity plate;

Fig. 2 is the structural representation after cavity plate loads the second forming blocks;

Fig. 3 is the structural representation of core plate;

Fig. 4 is the structural representation after core plate loads the first forming blocks;

Fig. 5 is the structural representation of the second forming blocks;

Fig. 6 is the structural representation of the first forming blocks;

Fig. 7 is the product of this injection mold injection mo(u)lding.

In figure: 1, cavity plate; 11, cavity; 2, sprue; 21, the first overfall; 3, transition runner; 4, the first sub-runner; 41, the 3rd overfall; 42, the 4th air discharge duct; 5, the second forming blocks; 51, the 4th overfall; 52, the 5th air discharge duct; 53, projection; 6, core plate; 61, die cavity; 62, mold insert; 63, the 3rd air discharge duct; 64, first row air drain; 7, the first forming blocks; 71, the second sub-runner; 72, tunnel gate; 73, the second overfall; 74, second row air drain; 8, product; 81, fluting.

Detailed description of the invention

Below in conjunction with accompanying drawing and by specific embodiment, utility model being described in further detail, following example are illustrative, are not determinate protection domains of the present utility model.

Referring to Fig. 1 and Fig. 2, a kind of injection mold includes cavity plate 1, this cavity plate 1 includes the cavity 11 of multiple integrated injection molding, the present embodiment is provided with four cavitys 11, injection molding material is brought into by cavity plate 1 by note cast gate, by 2 points of two-way of sprue, sprue 2 is communicated with four transition runners 3, each transition runner 3 is all communicated with the first sub-runner 4 being symmetrical set, the end of the first sub-runner 4 is provided with the 3rd overfall 41,3rd overfall 41 is communicated with the 4th air discharge duct 42, and the 4th air discharge duct 42 is in communication with the outside.

Each cavity 11 circumference is provided with three the second forming blocks 5.

In conjunction with Fig. 5 and Fig. 7, second forming blocks 5 is provided with a projection 53 in radial directions, this projection 53 is for the fluting 81 of injection molding product 8, the end face of the second forming blocks 5 offers the 4th overfall 51,4th overfall 51 is communicated with the 5th air discharge duct 52, and the air in the cavity 11 that cavity plate 1 is offered is discharged by the 4th overfall 51.

Referring to Fig. 2 to Fig. 4, injection mold also includes core plate 6, is communicated with the first overfall 21 in two ends of the sprue 2 of core plate 6, and the first overfall 21 connects first row air drain 64, and first row air drain 64 is in communication with the outside discharges the air on sprue 2.

Core plate 6 offers four die cavities 61, mold insert 62 it is provided with in die cavity 61, cavity in cavity plate 1 11 and mold insert 62 grafting, be fixed with the first forming blocks 7 on die cavity 61, be provided with the second sub-runner 71 connected with the first sub-runner 4 in the first forming blocks 7.

Referring to Fig. 6, second sub-runner 71 of the first forming blocks 7 offers tunnel gate 72, tunnel gate 72 connects die cavity 61, first forming blocks 7 is additionally provided with the second overfall 73, second overfall 73 connects second row air drain 74, second row air drain 74 connects with the 3rd air discharge duct 63 being opened in core plate 6, and the 3rd air discharge duct 63 is in communication with the outside (Fig. 3), and the air in die cavity 61 is discharged to the external world by the second overfall 73.

The path of injection molding material flowing is: first enter from note cast gate, flow to sprue 2, sprue 2 shunting first passes through transition runner 3, transition runner 3 is further separated on the first sub-runner 4 again, in core plate 6, injection molding material is flowed into the second sub-runner 71 the first forming blocks 7 from the first sub-runner 4, enters into die cavity 61 by the tunnel gate 72 being arranged on the second sub-runner 71 interior with cavity 11 until shaped article 8.

The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model. It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims

1. an injection mold, including cavity plate (1) and core plate (6), described core plate (6) has the die cavity (61) of multiple shaped article, mold insert (62) it is provided with in die cavity (61), it is characterized in that, described core plate (6) offers sprue (2), described sprue (2) is communicated with the first sub-runner (4), first sub-runner (4) connects with die cavity (61), and between sprue (2) and the first sub-runner (4), it being provided with transition runner (3), described first sub-runner (4) and transition runner (3) are arc and arrange; It is fixed with the first forming blocks (7) in described die cavity (61), the first forming blocks (7) is provided with the second sub-runner (71) connected with the first sub-runner (4), the second sub-runner (71) is wherein provided with the cast gate connected with die cavity (61).

2. a kind of injection mold according to claim 1, it is characterised in that described cast gate is set to tunnel gate (72).

3. a kind of injection mold according to claim 1, it is characterised in that described first sub-runner (4) is symmetrically arranged with twice, the same symmetry of described second sub-runner (71) has two.

4. a kind of injection mold according to claim 1, it is characterised in that sprue (2) two ends of described core are communicated with the first overfall (21), and described first overfall (21) is communicated with first row air drain (64).

5. a kind of injection mold according to claim 1, it is characterized in that, described first forming blocks (7) offers the second overfall (73), described second overfall (73) is communicated with second row air drain (74), and described core plate (6) offers the 3rd air discharge duct (63) connected with second row air drain (74).

6. a kind of injection mold according to claim 1, it is characterised in that the end of first sub-runner (4) of described cavity plate (1) is communicated with the 3rd overfall (41), and the 3rd overfall (41) is communicated with the 4th air discharge duct (42).

7. a kind of injection mold according to claim 1, it is characterized in that, described cavity plate (1) offers the cavity (11) identical with die cavity (61) quantity, described mold insert (62) is inserted in cavity (11), the circumference of cavity (11) is fixed with multiple second forming blocks (5), radial direction in the second forming blocks (5) is provided with projection (53), and this projection (53) is placed in cavity (11).

8. a kind of injection mold according to claim 7, it is characterised in that the top of described second forming blocks (5) offers the 4th overfall (51), and the 4th overfall (51) is communicated with the 5th air discharge duct (52).