Injection mold for forming assembly

Abstract

The invention provides an injection mold for forming assembly. The injection mold comprises a lower mold base, a pad foot, a fixed template, a movable template, a fixed plate and an upper mold base; an ejector plate is arranged between the lower mold base and the fixed template; four inclined ejector rods are uniformly distributed on the ejector plate; ejector blocks are fixed at the head parts of the ejector rods; multiple molding cores are uniformly distributed at the bottom of the movable template; a sprue sleeve is arranged in the center of the upper mold base; a runner is formed in the center of the sprue sleeve; and the runner includes a main runner for penetrating through the fixed plate along the center of the sprue sleeve, and a branch runner positioned between the fixed template and the fixed plate. The injection mold for forming assembly realizes secondary mold opening thereof through use of two simple structures of an elastic block and a pull rod, totally separates workpieces from wastes during mold opening, is flat in section, is easy to take out the wastes, is convenient to machine, and is higher in forming rate.

Description

technical field [0001] The invention belongs to the field of integrated equipment for injection molding and assembly, and in particular relates to an injection mold for molding and assembly. Background technique [0002] With the development of society and the advancement of science and technology, people have found that injection molded bearings are more practical than metal bearings, have a wider range of applications, and are more durable. In some cases, shafts and gears do not need to be integrally molded, but need to be separated Injection molding, or the case where the gear is plastic and the shaft is metal, it needs to be processed and molded separately, and then manually assembled, which leads to an increase in the production process and labor costs. It is often easy to cause damage to plastic parts and reduce the yield. In view of this situation, the present invention provides an injection mold for forming and assembling, which realizes the secondary mold opening of...

AI Technical Summary

Problems solved by technology

[0002] With the development of society and the advancement of science and technology, people have found that injection molded bearings are more practical than metal bearings, have a wider range of applications, and are more durable. In some cases, shafts and gears do not need to be integrally molded, but need to be separated Injection molding, or the case where the gear is plastic and the shaft is metal, it needs to be processed and molded separately, and then manually assembled, which leads to an increase in the production process and labor costs. It is often easy to cause damage to plastic parts and reduce the yield. In view of this situation, the present invention provides an injection mold for forming and assembling, which realizes the secondary mold opening of the mold, so that the gear can be easily and smoothly molded and demolded, and the cross-section of the workpiece can be guaranteed. It is smooth and not easy to damage the formed gear workpiece, which reduces the production cost, and at the same time ensures the integrity of the gear production and assembly process, and is easy to take out

Images