CN201922530U

CN201922530U - Insert for main runner of plastic mold

Info

Publication number: CN201922530U
Application number: CN2010206921426U
Authority: CN
Inventors: 孙立军
Original assignee: CIXI XINTONGDA MOULD Co Ltd
Current assignee: CIXI XINTONGDA MOULD Co Ltd
Priority date: 2010-12-31
Filing date: 2010-12-31
Publication date: 2011-08-10
Anticipated expiration: 2020-12-31

Abstract

The utility model relates the field of the plastic mold, in particular to an insert for a main runner of the plastic mold. The insert comprises an assembly A and an assembly B; a pouring opening is arranged on the upper part at the front end of the right side of the assembly A; the pouring opening is communicated with a pouring track; the outlet of the pouring track is arranged on the lower part at the rear end of the right side of the assembly A; the included angle between the tangent of the pouring track from the top down and the horizontal plane gradually increases; the assembly B is symmetrical with the assembly A; the assembly B and the assembly A are fixedly connected; the pouring opening A corresponds to a pouring opening B; and the outlet A corresponds to an outlet B. The insert for main runner of a plastic mold has the beneficial effects that material overflow due to breaking of thin ejector pin and overlarge single excessive flash can be avoided, and the fabrication cost of molds is reduced.

Description

The mold insert that is used for sprue in a kind of mould of plastics

Technical field

The utility model relates to the mould of plastics field, is used for the mold insert of sprue in especially a kind of mould of plastics.

Background technology

During designing mould, often owing to be subjected to the influence of goods and mould structure, perhaps because the restriction of running gate system and die cavity number makes sprue depart from mold center, and offset distance is also very big sometimes, many Questions of asking appear when causing mould to use.One, when ejecting goods, because of ejecting center of gravity not in mold center, ejector retainner plate and end needle plate in ejecting motion easily partially, easily cause thimble tiltedly side, the side of pushing away, take charge of bumpy motions such as tube, sometimes even tiny thimble is fractureed, make product deformation or damage; Its two because sprue is in mold center, easily cause the excessive and flash of single face burr.

Summary of the invention

In order to solve above-mentioned sprue not in the technical problem of mold center, the utility model provides the mold insert that is used for sprue in a kind of reliable mould of plastics.

The technical solution of the utility model is as follows:

The mold insert that is used for sprue in a kind of mould of plastics, comprise assembly A and assembly B, described assembly A right side upper front end is provided with the sprue gate, described sprue gate is communicated with a cast track, and described cast track export is in assembly A right side rear end lower, and the tangent line of described from top to bottom cast track and the angle of horizontal plane are increasing, described assembly B and assembly A symmetry, described assembly B and assembly A are fixed together, and described sprue gate A is corresponding with sprue gate B, and described outlet A is corresponding with outlet B.

Use the technical solution of the utility model, avoided making tiny thimble to fracture and cause the excessive and flash of single face burr, and save the molding cost.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of assembly B in the utility model;

Fig. 3 is the structural representation of assembly A in the utility model;

Fig. 4 is the structural representation of the utility model embodiment.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment

As Fig. 1, shown in 2 and 3, the mold insert that is used for sprue in a kind of mould of plastics, comprise assembly A1 and assembly B2, described assembly A1 right side upper front end is provided with sprue gate 6, described sprue gate 6 is communicated with a cast track 8, described cast track 8 outlets 7 are in assembly A1 right side rear end lower, the tangent line of described from top to bottom cast track 8 and the angle of horizontal plane are increasing, described assembly B2 and assembly A1 symmetry, described assembly B2 and assembly A1 are fixed together, described sprue gate A6 is corresponding with sprue gate B3, and described outlet A7 is corresponding with outlet B5, and cast track A8 is corresponding with cast track B4.

As shown in Figure 4, the major flow starting point is positioned at mold center in the mold insert 10, terminal point arrives product 13 surfaces, because processing needs separately 2, machine the back and just can be installed on the mould, 10 two inclined-planes of the mold insert that has merged are adjacent to A plate 11 and upper cores 12 respectively, guaranteed mold insert 10 location all around, and mold insert 5 sides are fixing by screw 9, and like this with regard to installation, the plastics in the injection machine can arrive product 13 die cavities along the cast track A8 of banana-shaped in the mold insert 10 and the runner of cast track B4.

Claims

1. the mold insert that is used for sprue in the mould of plastics, it is characterized in that: comprise assembly A(1) and assembly B(2), described assembly A(1) the right side upper front end is provided with sprue gate (6), described sprue gate (6) is communicated with a cast track (8), described cast track (8) outlet (7) is at assembly A(1) the right side rear end lower, the tangent line of described from top to bottom cast track (8) and the angle of horizontal plane are increasing, described assembly B(2) with assembly A(1) symmetry, described assembly B(2) with assembly A(1) be fixed together, described sprue gate A(6) with sprue gate B(3) corresponding, described outlet A(7) with the outlet B(5) corresponding.