Highlight injection mould heating and cooling device and heating and cooling method thereof

Abstract

The invention discloses a highlight injection mould heating and cooling device and a heating and cooling method thereof. The heating and cooling device comprises a mould cavity, an electric heating rod, a pump, a heat exchange medium storage container and a controller. The electric heating rod is arranged in a pipeline which is arranged on the mould cavity, a gap for feeding of heat exchange media is reserved between the electric heating rod and the inner wall of the pipeline, a first control valve is arranged at one end of the pipeline, and a second control valve is arranged at the other end of the pipeline. A temperature sensor is arranged on the mould cavity, a pressure sensor is arranged in the pipeline, the temperature sensor and the pressure sensor are connected into the controller, and the pump, the control valves and the electric heating rod are all controlled by the controller. The mould cavity can be heated to higher temperature without external high-pressure boilers and fixed connection pipes, and heat transfer speed and efficiency are high. Further, the highlight injection mould heating and cooling device and the heating and cooling method thereof have the advantages of high safety, reliability and energy conversion efficiency, capability of further shortening injection period and the like.

Description

technical field [0001] The invention relates to a heating and cooling device for a high-gloss injection mold and a heating and cooling method for the heating and cooling device for a high-gloss injection mold. Background technique [0002] As one of the important molding methods in plastic processing, injection molding is widely used in various fields of industrial production. With the increasing application of plastic products, people have higher and higher requirements for the precision, surface quality and strength of plastic products. However, for some defects in the injection molding process, such as: welding marks, flow marks, and poor appearance quality of plastic products etc., ordinary injection molding process can not fundamentally solve. In the actual production process, the surface quality and surface strength of plastic products are mainly improved by plastic spraying technology, which is used to cover up the surface defects of plastic products. Surface sprayi...

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Problems solved by technology

However, the mold requires the use of high-temperature steam, high energy consumption, low safety, and complex mold production. At the same time, the alternate use of cold and hot conditions has certain defects in the life and maintenance of the cavity.

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