The main structure of the mold design and fabrication

The experimental design and manufacture a set with heating, cooling, vacuum pumping microinjection molding Babyplast mold structure , the experiment used 6 / 10 micro- injection molding machine comes with mold . Micro injection molding mold body structure compared to conventional injection molding dies , there are many unique features, such as: smallCustom injection moulding  cavity size , specific surface area increases ; melt flowing through microfluidic channels , when the cavity condensation speed, easily lead fill incomplete , require high mold temperature. Standard mold temperature is generally set 20 ~ 50 ℃,, microinjection molding and mold temperature of up to 60 ~ 180 ℃. In order to meet the requirements of high mold temperature , while maximizing the heating rate , the use of electric heating rods . Thermocouple ( iron / constantan ) , the internal electric rods (6mm) Injection mold maker and micro- injection molding machine control software thermostat system . Such a high mold temperature, natural cooling is bound to increase the production cycle , so a multi-channel water cooling .Micro injection molding mold cavity mostly blind hole miniature structure and high precision machining and cooperation , relying on traditional parting surface ,Structural gap has been unable to fully exhaust . If the cavity where the gas can not be discharged , will cause hot spots , lack of filling defects , for setting the path and the corresponding vacuum seal structure . In addition , due to the small size of micro parts , light weight , thin wall , the top of the inappropriate use of conventional mechanical ejector , which uses suction device to complete the release of micro parts .