A temperatura do molde de plástico tem uma grande influência na qualidade da moldagem do produto, que é uma das três principais condições do processo de moldagem por injeção. Para moldagem por injeção de precisão, não há apenas o problema de alta e baixa temperatura, mas também o problema da precisão do controle de temperatura. Obviamente, no processo de moldagem por injeção de precisão, se o controle de temperatura não for preciso, the fluidity of plastic melt and the molding performance and shrinkage of the product will not be stable, so the accuracy of the finished product can not be guaranteed. Geralmente, the temperature control box, heating ring and other system combination methods are used to control the mold temperature.
1. There are several ways to heat or cool the mold of plastic mold. Steam, hot oil circulation, hot water circulation and resistance can be used to heat and raise the temperature of the mold. Cooling water or air can be used to cool the mold. Resistance heating and cooling water circulation cooling are widely used in the temperature regulation of injection mold. When heating the mould by resistance, the flat part is heated by resistance wire, the cylinder part is heated by electric heating coil, and the mould body is heated by electric heating rod. The cooling part of the mold needs to be cooled by arranging the circulating water pipe. The resistance heating and cooling water circulation work alternately according to the specific temperature conditions of the die, so that the die temperature is controlled within the temperature range required by the process.
2. Precautions for mold temperature control:
(1) After heating, the temperature of each part of the molding mold should be uniform to ensure that the molten material has better filling quality, so that the molding quality of the injection products can be guaranteed and the qualified rate of the injection products can be improved.
(2) The specific process temperature adjustment should be determined by the viscosity of the melt. When the melt with higher viscosity is injected into the mold, the specific temperature of the mold should be adjusted slightly higher; The temperature of the mold can be reduced by filling with lower viscosity melt. In preparation for injection production, the mold specific temperature is within the range of process requirements. In order to ensure the uniform temperature of the mold, the mold with the required temperature should be kept constant for a period of time.
(3) During injection molding of large plastic products, due to the large amount of molten material and the small flow path of molten material, the large mold should be heated and moisturized at the flow path of molten material, so as to prevent the molten material from cooling when flowing due to the long flow path of molten material and increase the viscosity of molten material, so as to slow down the flow of molten material, affect the filling quality of molten material injection mold, and cause the molten material to cool and solidify in advance, The injection work of the injection molding machine can not be carried out.
(4) In order to reduce the temperature drop of molten material and increase the heat loss due to the long molten material flow path, a heat insulation and moisturizing layer should be added between the low temperature part of the mold cavity and the high temperature part of the molten material flow path.
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Sobre JasonMould Industrial Company Limited
Jasonmould é um Fabricante de moldes da china de moldes de plástico- molde de injeção, moldes de fundição sob pressão, moldagem por sopro de plástico, moldagem rotacional, médico moldagem por injeção de plástico, dois tiros moldagem por injeção de plástico, inserir moldagem, sobremoldagem, moldagem por injeção de metal, moldagem por micro injeção, moldagem por injeção de pó, moldagem por injeção de cerâmica, moldagem por injeção de líquido, moldagem por injeção husky, molde doméstico, molde de fundição, ferramenta de molde, moldes personalizados, moldes da china, ferramentas de prototipagem rápida, ferramentas de prototipagem de plástico, ferramentas de punção, matriz e ferramentas para peças móveis / celulares, partes automotivas, aspirador de pó, ferramentas recarregáveis, telefones, copiadoras, computadores, alto-falantes multimídia, e muitos outros produtos eletrônicos e eletrodomésticos. E também um fabricante de produtos de plástico, fabricante de moldes China- peças de plástico, tanque de água de plástico, bolas de plástico, recipientes de plástico, fivela de plástico, âncora de plástico, cabide de plástico, colher de plástico, encaixe de tubo de plástico, tombo de plástico, talheres de plástico, copos de plastico, garrafas plásticas, bandeja de plastico, recipiente plástico de cosmético, caixa de plástico, recipiente de plástico para comida, cadeiras de plástico, tampas de plástico, tampa de plástico, tubos de plástico, canos de água de plástico, maçanetas de plástico, tubo de plástico, caixas utilitárias de plástico, prateleiras de plástico e assim por diante.
Contato:
Pessoa: James Yuan
Empresa: JasonMould Industrial Company Limited
Adicionar: LongGang Village,LongXi Town,BoLuo County,Cidade de HuiZhou,Província de Guangdong, China
Tel: 86-752-6682869
E-mail: [email protected]
Local: https://www.jasonmolding.com/custom-injection-molding/
