CN202169676U - Submarine gate of injection mould - Google Patents

Abstract

The utility model discloses a submarine gate of an injection mould, which comprises an inclined subcurrent passage (3) and a main flow passage (5), and is characterized in that one part of the outlet end surface of the inclined subcurrent passage (3) is a half-opened submarine gate (6), the other part is an inclined subcurrent passage bottom wall (7), the half-open submarine gate (6) is arranged at the connecting part of the outlet of the inclined subcurrent passage (3) and an inclined cavity edge wall (2), and an inclined subcurrent passage bottom wall (7) is arranged below the half-open submarine gate (6). After the adoption of the structure, since part of the inclined subcurrent passage is partly plugged, the area of the submarine gate is reduced, plastic remains at the pouring gate are reduced, the glue feeding speed is accelerated during the injection moulding, and forming and glue injection pressure is reduced, and internal stress in product forming is reduced.

Description

The latent cast gate of injection mold

Technical field

The utility model relates to a kind of latent cast gate of injection mold, is applicable to that mainly product processed is the plastic product that has gradient limit wall.

Background technology

When product processed is the plastic products that have gradient limit wall; And need be when this gradient limit wall be dived glue; Mould in the past adopts (its structure is as shown in Figure 4) tiltedly undercurrent road usually, and tiltedly the undercurrent road directly communicates with product die cavity limit wall, and forms the latent cast gate 10 of standard-sized sheet in this place that directly communicates.After the formed product demoulding, the product of the cast gate institute correspondence position of diving has too much plastic cement remaining 8 and resides in (as shown in Figure 5) on the product, causes product appearance and assembling not to reach requirement.

The utility model content

The utility model purpose is to provide a kind of latent pouring gate structure of new mould, and is residual corresponding to the plastic cement of the gate location of diving to reduce on the wall of product limit.

In order to solve the problems of the technologies described above; The technical scheme of the utility model is: tiltedly the undercurrent road communicates with product limit wall; Establish an oblique undercurrent road diapire in bottom, oblique undercurrent road, intersect this oblique undercurrent road diapire and die cavity Bian Bi and bottom, oblique undercurrent road, and oblique undercurrent road is not all sealed.Through oblique undercurrent road diapire is set, dwindled the latent cast gate area of former process using:

The latent cast gate of injection mold comprises oblique undercurrent road and sprue; Tiltedly the exit end face part in undercurrent road is half-open latent cast gate; Another part is an oblique undercurrent road diapire; Tiltedly the outlet in undercurrent road is half-open latent cast gate with the junction of skewed die cavity limit wall promptly, and half-open latent cast gate below is provided with oblique undercurrent road diapire.

After adopting said structure,, reduced latent cast gate area, can the cast gate plastic residue have been reduced, and when injection mo(u)lding, add F.F. glue speed, also can lower moulding die cavity internal pressure and reduce the formed product internal stress owing to pass through the oblique undercurrent road of occluding member.

Description of drawings

Fig. 1, be the structural representation of the utility model embodiment 1.

Fig. 2, be the local structure for amplifying sketch map of the A part of the utility model embodiment 1.

Fig. 3, be the product sketch map of the utility model embodiment 1.

Fig. 4, be the dive structural representation of cast gate of the standard-sized sheet of mould in the prior art.

Fig. 5, be product sketch map of the prior art.

Among the figure: product die cavity 1, skewed die cavity limit wall 2, oblique undercurrent road 3, thimble 4, sprue 5, half-open latent cast gate 6, oblique undercurrent road diapire 7, plastic cement is remaining 8, and little plastic cement is remaining 9, the standard-sized sheet cast gate 10 of diving.

The specific embodiment

Embodiment 1:

Referring to Fig. 1-3; The limit wall of product die cavity 1 is a skewed die cavity limit wall 2; Be connected through oblique undercurrent road 3 between sprue 5 and the product die cavity 1 and communicate, injection molding material can arrive product die cavities 1 from sprue 5 through oblique undercurrent road 3 and half-open latent cast gate 6, and sprue 5 belows are provided with thimble 4.Tiltedly undercurrent road 3 is half-open latent cast gate 6 with the junction of skewed die cavity limit wall 2; Establish an oblique undercurrent road diapire 7 in oblique 3 bottoms, undercurrent road; This oblique undercurrent road diapire 7 is connected with oblique bottom, undercurrent road, and oblique undercurrent road 3 is not all sealed, and the part of not sealing is exactly half-open latent cast gate 6.After injection molding material arrived 1 moulding of product die cavity through oblique undercurrent road 3 and half-open latent cast gate 6 from sprue 5, the cast gate plastic residue was little plastic cement remnants 9, and nubbin reduces a lot, reaches product requirement easily.

Claims (1)

1. the latent cast gate of an injection mold; It comprises oblique undercurrent road (3) and sprue (5); It is characterized in that: tiltedly the exit end face in undercurrent road (a 3) part is half-open latent cast gate (6); Another part is an oblique undercurrent road diapire (7), and tiltedly the outlet in undercurrent road (3) is a half-open latent cast gate (6) with the junction of skewed die cavity limit wall (2) promptly, and half-open latent cast gate (6) below is provided with oblique undercurrent road diapire (7).

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