CN202668915U

CN202668915U - Exhaust structure of injection mold

Info

Publication number: CN202668915U
Application number: CN 201220317745
Authority: CN
Inventors: 金海平
Original assignee: NINGBO KINGS INDUSTRIAL Co Ltd
Current assignee: NINGBO KINGS INDUSTRIAL Co Ltd
Priority date: 2012-06-29
Filing date: 2012-06-29
Publication date: 2013-01-16
Anticipated expiration: 2022-06-29

Abstract

The utility model discloses an exhaust structure of an injection mold, belonging to the technical field of injection molds. The exhaust structure comprises a straight pin, a locating pin and multiple exhaust blocks sleeved on the straight pin in sequence, wherein the straight pin and the exhaust blocks are located on a core of the injection mold, the outer circumferential surface of the straight pin is provided with an axial exhaust groove, the locating pin is inserted between the multiple exhaust blocks, each exhaust block is provided with a gas storage groove, the gas storage groove is communicated with a cavity through a first exhaust groove arranged on the exhaust blocks, and is communicated with an axial exhaust groove on the straight pin through a second exhaust groove arranged on the exhaust blocks. The exhaust structure of the injection mold, provided by the utility model, has the advantage of capability of timely exhausting the cavity.

Description

The exhaust structure of injection mould

Technical field:

The utility model relates to a kind of injection mold, specifically is a kind of exhaust structure of injection mould.

Background technology:

As shown in Figure 5, double-colored waterproof magazine generally comprises by the box body 101 of ebonite moulding with by the through wires hole 102 of flexible glue moulding and forms, when injection mo(u)lding, general first injection moulding box body 101 parts, and then injection moulding through wires hole 102 parts, when injection moulding through wires hole 102, although the core at moulding through wires hole place is provided with air discharge duct, but because the wall thickness of through wires hole is less, therefore the height dimension of offering air discharge duct is also less, this just easily causes exhaust untimely, and the melt filling difficulty causes through wires hole 102 forming defects.

The utility model content:

The technical problems to be solved in the utility model is that a kind of exhaust structure that can make the injection mould of the timely exhaust of die cavity is provided.

Technical solution of the present utility model is, provide a kind of exhaust structure with injection mould of following structure: comprise straight pin, alignment pin and be enclosed within successively a plurality of exhaust blocks on the straight pin, straight pin and exhaust block all are positioned on the core of double-colored waterproof magazine injection mould, the periphery of straight pin is provided with the axial exhaust groove, alignment pin is inserted between a plurality of exhaust blocks, be equipped with air reservoir on each exhaust block, air reservoir communicates with die cavity by the first row air drain that exhaust block is provided with, and the second row air drain that is provided with by exhaust block communicates with axial exhaust groove on the straight pin.

After adopting above structure, compared with prior art, the exhaust structure of the utility model injection mould has following advantage: because the utility model comprises straight pin and is enclosed within successively a plurality of exhaust blocks on the straight pin, the periphery of straight pin is provided with the axial exhaust groove, be equipped with air reservoir on each exhaust block, air reservoir communicates with die cavity by the first row air drain that exhaust block is provided with, and the second row air drain that is provided with by exhaust block communicates with axial exhaust groove on the straight pin, therefore, when injection mo(u)lding, high pressure gas cognition in the die cavity enters in the air reservoir by the first row air drain rapidly, play the effect of decompression, be discharged to outside the injection mold through second row air drain and axial exhaust groove again, thus the Forming Quality of assurance plastic products.

Description of drawings:

Fig. 1 is the structural representation of the exhaust structure of the utility model injection mould when being installed on the injection mould;

Fig. 2 is the structure for amplifying schematic diagram that " A " locates among Fig. 1;

Fig. 3 is the perspective view of exhaust block in the exhaust structure of the utility model injection mould;

Fig. 4 is the perspective view of straight pin in the exhaust structure of the utility model injection mould;

Fig. 5 is the perspective view of the double-colored waterproof magazine of plastic products.

The specific embodiment:

Be described further below in conjunction with the exhaust structure of the drawings and specific embodiments to the utility model injection mould:

Such as Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, in this specific embodiment, the exhaust structure of the utility model injection mould comprises straight pin 3, alignment pin 2 and be enclosed within successively five exhaust blocks 1 on the straight pin 3, straight pin 3 and exhaust block 1 all are positioned on the core 9 of injection mould, the periphery of straight pin 3 is provided with axial exhaust groove 7, alignment pin 2 is inserted between a plurality of exhaust blocks 1, be equipped with air reservoir 4 on each exhaust block 1, air reservoir 4 communicates with die cavity 8 by the first row air drain 5 that exhaust block 1 is provided with, and the second row air drain 6 that is provided with by exhaust block 1 communicates with axial exhaust groove 7 on the straight pin 3.

The exhaust pathway of the exhaust structure of the utility model injection mould is, the gases at high pressure that produce during injection moulding enter in the air reservoir 4 by first row air drain 5 first rapidly, play the effect of decompression, be discharged to outside the injection mold through gap and screw hole 10 between second row air drain 6, axial exhaust groove 7, core 9 and the moving platen 11 successively again.

Above-described embodiment is described preferred embodiment of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.

Claims

1. the exhaust structure of an injection mould, it is characterized in that: comprise straight pin (3), alignment pin (2) and be enclosed within successively a plurality of exhaust blocks (1) on the straight pin (3), described straight pin (3) and exhaust block (1) all are positioned on the core (9) of injection mould, the periphery of described straight pin (3) is provided with axial exhaust groove (7), described alignment pin (2) is inserted between a plurality of exhaust blocks (1), be equipped with air reservoir (4) on described each exhaust block (1), described air reservoir (4) communicates with die cavity (8) by the first row air drain (5) that exhaust block (1) is provided with, and the second row air drain (6) that is provided with by exhaust block (1) communicates with axial exhaust groove (7) on the straight pin (3).