Injection molding method and system

Abstract

The invention provides an injection molding method and system. The injection molding system comprises a feed opening, a filling device, a mold, a temperature control module, a mold locking device, a temperature measurement module, a pressure sensor and a PLC control module, wherein the feed opening is used for feeding raw materials; the filling device is connected with the feed opening and is used for receiving and processing the raw materials and injecting the raw materials into the mold; the mold is connected with the filling device and is used for performing injection molding; the temperature control module is connected with the mold and is used for heating or refrigerating a mold core of the mold; the mold locking device is connected with the mold and is used for controlling the opening and closing degree of the mold; the temperature measurement module is connected with the mold and is used for detecting the actual temperature of the mold; the pressure sensor is arranged on the mold and is used for detecting an actual pressure value of a mold cavity of the mold; and the PLC control module is respectively connected with the filling device, the temperature control device, the mold locking device and the temperature measurement module, and data of a first preset value, a second preset value, a first preset condition and a second preset condition are stored in the PLC control module. By implementing the injection molding method and system provided by the invention, an injection molding method and system which can be used for completely changing and improving conventional injection molding process steps and are low in cost and high in yield rate can be obtained.

Description

【Technical field】 [0001] The present invention relates to the technical field of injection molding, in particular to an injection molding method and system. 【Background technique】 [0002] Injection molding machines are usually composed of injection system, mold clamping system, hydraulic transmission system, electrical control system, lubrication system, heating and cooling system, safety monitoring system, etc. The traditional injection molding method is: set a constant mold temperature, set a multi-stage filling process with different speeds and different pressures, the mold will withstand the mold with high pressure before filling, and maintain a certain pressure after multi-stage filling to maintain pressure after filling. There are serious defects in this method, mainly in that: it is easy to cause unstable product size and poor surface appearance, there is no way to realize products with thin walls and uneven thickness, internal stress deformation and post-deformation...

AI Technical Summary

Problems solved by technology

There are serious defects in this method, mainly in that: it is easy to cause unstable product size and poor surface appearance, there is no way to realize products with thin walls and uneven thickness, internal stress deformation and post-deformation are easy to occur, water lines are obvious, and during the filling process Poor exhaust leads to scorching of the product. In addition, due to the high requirements on the speed of the injection system and other aspects, it consumes a huge amount of energy, and because of the high pressure applied to the mold, high-quality and expensive steel is required to make the molding mold.

The cost of the whole system is high, but the yield rate is low, and the safety is low, and it is not environmentally friendly

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