Blow molding machine servo motor drives opening and closing mold locking mechanism

Abstract

The invention discloses a servo-motor-driven mould opening, closing and locking mechanism of a bottle blowing machine. The servo-motor-driven mould opening, closing and locking mechanism comprises a rack, two movable templates, bottoms of which are in sliding fit to the rack as well as a power mechanism for driving the movable templates to slip, wherein two fixed templates are arranged on the rack; at least one pair of linkage rods is arranged between the fixed templates and the movable templates; the same pair of two linkage rods is hinged with each other through a rotary shaft, and the two ends of each linkage rod are hinged with the fixed templates and the movable templates separately; a liftable bottom template driven by an air cylinder is arranged below a gap between the two movable templates; the side surface of one movable template is fixedly provided with a linkage plate; an arc-shaped slide slot which is in sliding fit to the end part of the bottom template is formed in the linkage plate; during mould closing, the linkage plate horizontally moves along with the fixed templates, and the air cylinder drives the bottom template to vertically move upwards along the arc-shaped slide slot. According to the servo-motor-driven mould opening, closing and locking mechanism disclosed by the invention, side moulds are linked with a bottom mould, so that synchronism is good.

Description

technical field [0001] The invention relates to an opening and closing mold locking mechanism driven by a servo motor of a plastic stretch blowing machine, which belongs to the field of plastic machinery. Background technique [0002] The plastic stretch blowing machine is used to produce plastic hollow containers, such as mineral water bottles, oil bottles and beverage bottles, etc. There are many types of plastic stretch blowing machines, one of which is to use two-way synchronous opening and closing to increase the speed of mold opening and closing. In order to improve production efficiency, the main structure includes two fixed templates (pressurized plates) slidingly arranged at both ends of the frame. Half-piece mould, corresponding to two half-piece moulds. [0003] The opening and closing mold clamping mechanisms described in the prior art are each driven by an opening and closing mold clamping cylinder or a servo motor, for example, the servo motor-driven fully aut...

AI Technical Summary

Problems solved by technology

Due to the long distance between the supercharging mechanism and the supercharging object, the connecting link in the middle is a rotating mechanism rather than a fixed module. The supercharging force will generate a lot of loss during the transmission process, and it is also prone to direction deviation.

As a result, the pressurized pressure on the mold is small and uneven, and the sealing performance of the clamping mold is poor, the stability is low, and there are hidden dangers of mold expansion and air leakage; at the same time, in order to ensure the pressurized sealing, the piston hole on the fixed platen and the pressurized piston have relatively high requirements. High, increased processing requirements, high difficulty in installation and disassembly, time-consuming, and special tooling, which increases the cost of the machine and increases the difficulty of installation and maintenance

Images