Electromagnetic induction heating system of plastic machine

Abstract

The invention discloses an electromagnetic induction heating system of a plastic machine with high heat efficiency and high heating speed. The system comprises an electromagnetic induction heating power supply and a heating induction coil connected with the output end of the electromagnetic induction heating power supply, wherein the heating induction coil is sleeved on a metal charging material barrel of the plastic machine. The metal charging material barrel generates heat per se by electromagnetic induction so as to greatly improve the heat efficiency and solve the problem which is expected to be solved for a long term but is not solved; a heat insulation material is wrapped on the metal charging material barrel to reduce heat loss so as to further improve the heat efficiency, the heat efficiency generally can reach over 96 percent, and the power-saving effect is very remarkable and can reach over 30 percent; and the heating speed can be improved by 60 percent, and the pre-heating time is greatly saved.

Description

technical field [0001] The invention relates to an electromagnetic induction heating system, in particular to the application of electromagnetic induction heating on plastic machines. Background technique [0002] At present, the heating system installed on the barrel of the plastic machine usually adopts the heating method of resistance wire, that is, the electric heating coil is composed of resistance wire, and the heat generated by the electric heating coil is conducted to the barrel through conduction. In this resistance wire heating method, only the heat inside the electric heating ring is conducted to the barrel, and most of the heat outside is lost to the air, and the thermal efficiency is low. The heat lost to the air will also cause the temperature of the surrounding environment to rise, affecting To the comfort of the operating environment; in addition, resistance wire heating has a disadvantage of low power density, slow heating rate, and usually requires a long w...

AI Technical Summary

Problems solved by technology

In this resistance wire heating method, only the heat inside the electric heating ring is conducted to the barrel, and most of the heat outside is lost to the air, and the thermal efficiency is low. The heat lost to the air will also cause the temperature of the surrounding environment to rise, affecting To the comfort of the operating environment; in addition, resistance wire heating has a disadvantage that the power density is low, the heating rate is slow, and usually requires a long warm-up time

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