Heating system for injection molding machine mold

Abstract

The invention discloses a heating system for an injection molding machine mold. The heating system for the injection molding machine mold comprises a charging barrel, the charging barrel is composed of an outer charging barrel body and an inner charging barrel body, the heating system comprises a preheating system and an intelligent temperature control system, a cavity is formed between the inner charging barrel body and the outer charging barrel body, the outer charging barrel body is provided with a plurality of mounting supports, the preheating system comprises an electric heating ring arranged outside the outer charging barrel body and high-temperature fans arranged on the mounting supports, and the intelligent temperature control system comprises a plurality of heating blocks arranged on the outer side wall of the inner charging barrel body and temperature controllers arranged on the side edges of the mounting supports. According to the heating system, the multiple heating blocks are correspondingly arranged in the space between every two adjacent high-temperature fans, meanwhile, the heating blocks are independently arranged and are independently controlled by the corresponding temperature controllers, the heating temperatures of the heating blocks on the inner charging barrel body are different, the inner charging barrel body forms a plurality of heating sections, a movable temperature detector is further arranged on the side edge of the charging barrel and is in signal connection with the temperature controllers, and the temperature controllers are in control connection with the heating blocks.

Description

technical field [0001] The invention relates to the technical field of injection molding machines, in particular to a heating system for molds of injection molding machines. Background technique [0002] Injection molding machine is the main molding equipment for making molten thermoplastics or thermosetting plastics into various shapes of plastic products using plastic molding molds. It is the most used processing equipment in the plastics processing industry. When using an injection molding machine for plastic thermoforming processing , due to the composition and structure of the equipment, the heating of the equipment is very slow, which takes a long time in the processing process and greatly limits the production efficiency of the injection molding machine for thermal processing. The current heating system of the injection molding machine includes electric heating wire, electric heating Rod and electromagnetic heating, but these heating systems have the characteristics o...

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Problems solved by technology

[0002] Injection molding machine is the main molding equipment for making molten thermoplastics or thermosetting plastics into various shapes of plastic products using plastic molding molds. It is the most used processing equipment in the plastics processing industry. When using an injection molding machine for plastic thermoforming processing , due to the composition and structure of the equipment, the heating of the equipment is very slow, which takes a long time in the processing process and greatly limits the production efficiency of the injection molding machine for thermal processing. The current heating system of the injection molding machine includes electric heating wire, electric heating Rod and electromagnetic heating, but these heating systems have the characteristics of relatively pure hysteresis of the control object, and are prone to overshoot and fluctuations. At the same time, because the heating system of the injection molding machine is used to heat the barrel and the injection nozzle, but the barrel of the injection molding machine The heating device is installed outside the barrel, and the heat conducts through the barrel wall to provide a heat source for the plasticization of the material. There are problems such as energy waste, and the existing heating system of the injection molding machine cannot automatically adjust the barrel by detecting the amount of raw materials inside the barrel. At the same time, there may be uneven heating of raw materials, which will eventually affect the processing efficiency of the injection molding machine.

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