Cold-runner mould for thermosetting plastic

Abstract

The invention discloses a cold-runner mould for a thermosetting plastic. The cold-runner mould comprises an upper mould and a lower mould. The upper mould and the lower mould are arranged in parallel.An upper runner plate is mounted at the bottom of the upper mould, a lower runner plate is mounted right below the upper runner plate, a runner is arranged in a position, close to the upper end, in the upper runner plate, a plate A is mounted on the surface of the upper end of the upper mould, a heat isolating plate is arranged between the upper end surface of the plate A and the lower runner plate, and front mould cores are arranged in a middle position in the lower mould and the plate A. The mould can prevent a thermosetting plastic from being cured to reduce the number of times of disassembling and examining the mould, so that the production efficiency is improved. The pressure in a cavity is reduced, and the exhausting effect is increased, so that the product moulding percent of passis improved, the problem that the forming height of a large product is insufficient is solved, the using flexibility to the environment is increased, and wear between the upper runner plate and a valve needle can be reduced, so that a material leakage risk is further reduced. Air circulates above the heat isolating plate, so that a heat-dissipating effect is achieved.

Description

technical field [0001] The invention relates to the field of molds, in particular to a thermosetting plastic cold runner mold. Background technique [0002] Molds are various molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging, smelting and stamping to obtain the required products. In short, molds are tools used to make shaped objects , this tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object through the change of the physical state of the formed material; [0003] The thermosetting plastic cold runner molds on the market are easy to solidify during the molding process, and the mold needs to be opened regularly for inspection, which reduces work efficiency, poor exhaust effect, low molding pass rate, and easy gap between the upper runner plate and the valve needle. Abrasion occurs, resulting in material leakage, an...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a thermosetting plastic cold runner mold to solve the problem that thermosetting plastic cold runner molds on the market are easy to solidify during the molding process of the thermosetting plastic cold runner mold proposed in the above background technology, and regular mold opening is required for inspection, reducing Work efficiency, poor exhaust effect, low molding pass rate, easy wear between the upper runner plate and the valve needle, resulting in material leakage, and poor heat dissipation

Images