SU916076A1 - Reinforcing splitter for pressure die casting injection moulds - Google Patents

Description

The invention relates to foundry, in particular for drinking under pressure.

The closest to the proposed is a divider-valves for injection molding molds configured to form ^three tapered tip disposed in sprue of the sprue bushing, and having at the bottom a cylindrical fixing protrusion vhodya- ₀ conductive socket in the form [1].

The protrusion is not a constructive element and must be removed by mechanical refinement of the casting, which complicates the process of manufacturing parts.

The purpose of the invention is to reduce the complexity of manufacturing parts.

This goal is achieved by the fact that in the known divider-valve, having a cone-shaped working part, which is included in the channel of the sprue bushing, and the locking element, the latter is made in the form of ribs on the cone-shaped work2

whose parts interacting with the sprue bushing.

With this arrangement, the fixing of the divider directly to the cone of the gate runner is ensured.

FIG. 1 shows the splitter-armature, general view; in fig. 2 - part of the mold with a divider-armature installed in it.

The divider valve 1 is a cone-shaped polyhedron with concave faces separated by thin ribs 2. The shape and dimensions of the divider elements are determined by the conditions for creating a reliable fixation in the sprue bushing 3, the required flow area of the gating channel and laminarization of metal flow. In order to increase the adhesion to the main mass of the casting 4, a groove can be machined in the back part of the divider. Dense clamp of the divider to the punch is provided by increasing its length by up to 0.5 mm. .

916076

3

The manufacture of the distributor-valve during injection molding does not pose any difficulty and does not cause additional labor costs, since the divider can be molded together with the main part 5 in a separate nest of the form.

Due to the design features of the divider-reinforcement does not require an additional operation to remove the locking element in the internal cavity, parts are 10.

^{1 The} operation of cutting off the sprue and the front part of the distributor-reinforcement embedded in it is necessary in any case and does not change with the use of this distributor.

The invention significantly reduces the complexity of manufacturing parts.

four

Claims (1)

Claim The divider fittings for injection molding molds, having a cone-shaped working part included in the channel of the sprue bushing, and a fixing element, characterized in that, in order to reduce the labor intensity of manufacturing parts, the fixing element is designed as ribs on the cone-shaped working part, interacting with the sprue bushing.