Method for controlling finished weight through mechanical arm of injection molding machine

Abstract

The invention discloses a method for controlling finished weight through a mechanical arm of an injection molding machine. The method comprises the following steps of: firstly, setting the backpressure of the mechanical arm of the injection molding machine below one half of the rated numerical value, thus guaranteeing that the mechanical arm of the injection molding machine can generate sufficient mechanical energy when a screw rod resets in a rotating manner, and melting and mixing plastic; secondly, discharging volatile gas including air outside a material spraying cylinder; thirdly, uniformly mixing addition agents (such as toner, color, antistatic agents and talcum powder) and a molten material, and homogenizing the molten material flowing along the length of the screw rod; providing the uniform and stable plastic material so as to obtain precise finished weight control. The method for grabbing products through the mechanical arm of the injection molding machine provided by the invention has the advantages that the numerical value of the backpressure is controlled, thus the purpose of precisely controlling the weight of a finished product is realized, and the method belongs to the first test in the field.

Description

technical field [0001] The invention relates to a method for controlling the weight of a finished product through a manipulator of an injection molding machine, and belongs to the technical field of manipulator control. Background technique [0002] If the back pressure of the manipulator of the injection molding machine is too high, it will cause the screw to be too large and irregular offside, making the injection amount extremely unstable. The amount of offside is affected by the viscoelastic properties of the plastic. The more energy stored in the molten material of the injection molding manipulator, the screw will suddenly bounce back when it stops rotating. Some thermoplastics bounce more than other plastics, so it is impossible to accurately control the weight of the finished product. Contents of the invention [0003] The purpose of the present invention is to provide a method for controlling the weight of the finished product through the manipulator of the inject...

AI Technical Summary

Problems solved by technology

The more energy stored in the molten material of the injection molding manipulator, the screw will jump back suddenly when it stops rotating. Some thermoplastics have more jumping than other plastics, so it is impossible to accurately control the weight of the finished product.