A kind of mold clamping and opening device for injection mold and method thereof

Abstract

The invention discloses a mold closing and opening device for injection molds and a method thereof, which relate to the technical field of injection molds. The mold closing and opening device comprises a lower mold and an upper mold, and a motor is fixed on one surface of the lower mold; a first gear is fixed on the rotary shaft of the motor; supporting pillars are fixed on the opposite sides of the lower mold; moving blocks are fixed on the opposite sides of the upper mold; sliding blocks are fixed on the opposite sides of each moving block; and a fixture block is fixed on one surface of theupper mold. According to the invention, the teeth of the first gear are engaged with a second gear, the sliding blocks are in sliding fit with the internal surfaces of third grooves, consequently, theupper mold can move up and down to achieve the effect of mold closing and opening along with the lower mold, the energy consumption of mold closing and opening is reduced, and cost is reduced; the internal surface of each first groove is provided with an internal thread, the peripheries of threaded rods are in threaded fit with the first grooves, consequently, the matching degree between the upper mold and the lower mold is increased, and the production quality of the injection mold is increased.

Description

technical field [0001] The invention belongs to the technical field of injection molds, in particular to a mold closing and opening device for injection molds. Background technique [0002] The existing mold clamping and opening structure mainly adopts the composite type. In the composite type, the mold adjustment structure is generally divided into the following two types: in the clamping cylinder, the position of the pull rod is adjusted slightly to make the tooth top of the pull rod align with the tooth of the lock nut. The root position fits, locates and then locks the pull rod; 2. Adjust the position of the lock nut through a motor and other power mechanisms, so that the position of the pull rod and the lock nut fits, positions and then locks the pull rod. In these two mold adjustment structures, the four tie rods or lock nuts used need to add a separate power system, which increases the considerable cost, and the effect of mold closing and mold opening is poor, which n...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a mold clamping and mold opening device for injection molds, which solves the problem of high energy consumption of mold clamping and mold opening by utilizing the mold opening and clamping between mechanisms without using a mold clamping oil cylinder; The threaded rod cooperates with the upper mold, which solves the problem of poor fitting effect of mold closing and opening.

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