High-precision injection moulding machine for optical-grade transparent product

Abstract

The invention provides a high-precision injection moulding machine for an optical-grade transparent product, belongs to the technical field of injection moulding machines, and solves the problem of being low in precision of the conventional injection moulding machine. The high-precision injection moulding machine for the optical-grade transparent product, disclosed by the invention, comprises a temperature control system; the temperature control system comprises a plurality of sub-systems independently with one another; each sub-system comprises a PID (Proportion Integration Differentiation) operation module, a temperature detection sensor, a control module, a group of heating modules and a water flow control valve; the temperature detection sensor is used for detecting a temperature value at a position where the temperature detection sensor is located and outputting the temperature value to the PID operation module; and the PID operation module is used for carrying out PID calculation according to deviation between the detected temperature value and a preset value so as to output control signals to the control module. The high-precision injection moulding machine disclosed by the invention is used for respectively controlling the heating modules and cooling modules by arranging the heating modules and the cooling modules controlled by water flow valves at different positions in the cavity of the injection moulding machine through the plurality of PID operation modules independently with one another, so that the injection moulding machine can be heated relatively precisely.

Description

technical field [0001] The invention relates to the technical field of injection molding machines, in particular to a high-precision injection molding machine for optical grade transparent products. Background technique [0002] There are many existing injection molding solutions for preparing high-precision plastic products, and the more common one is injection compression molding technology. Injection compression molding technology is to inject plastic that has been heated into a fluid into a stainless steel mold, form it under heating and pressure conditions, and then open the mold after cooling and solidification to obtain the required plastic parts. However, the use of injection compression molding technology to prepare high-precision plastic products has the following disadvantages: (1) The thickness of injection molding is not easy to control; (2) The shrinkage and warpage problems during molding are not easy to control. The main reasons for the above shortcomings ar...

AI Technical Summary

Problems solved by technology

However, the use of injection compression molding technology to prepare high-precision plastic products has the following disadvantages: (1) The thickness of injection molding is not easy to control; (2) The shrinkage and warpage problems during molding are not easy to control

The main reasons for the above shortcomings are unbalanced and uneven heating of the mold, and inaccurate control of the heating temperature

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