External induction heating device of vertical injection mold

Abstract

The invention discloses an external induction heating device of a vertical injection mold, and belongs to the technical field of injection molding. The external induction heating device comprises an injection molding device, a clamping device and a high-frequency heating device. Local heating is performed on the surface of a mold core by the aid of a skin effect in an induction heating mode. The external induction heating device is novel in structure, ingenious in design, high in heating and cooling efficiency, short in working period, convenient to control and adjust, high in adaptability, capable of saving manufacturing and machining costs and remarkable in effect.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to a temperature-controlled heating device for an injection molding mold, in particular to an external induction heating device for a vertical injection mold. Background technique [0002] Injection molding is a mature plastic product processing technology, which is widely used due to its advantages of high processing efficiency, strong automation, and ability to form products with complex shapes. With the progress of the times and the development of science and technology, there are more and more types of processed plastics, and the quality requirements of injection molding products are getting higher and higher. Therefore, injection molding has higher and higher requirements for parameters such as temperature control and pressure regulation range. Accompanying it, more and more new technologies are applied to the field of injection molding, among which variable mold temp...

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Problems solved by technology

Among them, flame heating is prone to local high temperature and has high potential safety hazards; high-temperature steam heating requires an additional high-temperature boiler and the upper limit of heating temperature is low, sometimes it cannot meet the temperature requirements, and sometimes it will oxidize the mold material, affecting the use of the mold Life; when heating with hot water or hot oil, the internal structure of the mold must be arranged with a pipeline circuit for liquid flow, the efficiency is low, and the water and oil need to be pressurized. In addition, the oil is easy to cause pollution, especially for light-colored or no For injection molding products with transparent color, oil pollution will seriously affect the quality of injection molding products; the heating of the heating rod requires modification of the mold structure, and the requirements for the thermal conductivity of the mold material are high, and the power loss rate is high

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