Ultrasonic plasticizing and injection molding equipment for micro-nano device

Abstract

The invention provides ultrasonic plasticizing and injection molding equipment for a micro-nano device. The ultrasonic plasticizing and injection molding equipment comprises a base and an injection structure and a molding structure which are arranged on the base, wherein the injection structure comprises an ultrasonic transducer and an injection driving unit for driving the ultrasonic transducer to achieve vertical feeding, the ultrasonic transducer is used for melting and plasticizing polymer particles in the molding structure, and assisting in injection molding of a molten polymer; the molding structure comprises a mold unit and a mold clamping unit, wherein the mold clamping unit is used for mold closing, mold clamping and mold opening of the mold unit; and the mold unit comprises an upper mold with a built-in upper mold core and a lower mold with a built-in lower mold core, wherein the upper mold core is matched with the lower mold core to form a molding cavity to mold the molten polymer under maintained pressure.

Description

technical field [0001] The invention relates to an injection molding device, in particular to an ultrasonic plasticizing injection molding device for micro-nano devices. Background technique [0002] The development of micro-electromechanical systems requires a large number of micro-nano devices, which provides broad application requirements and market scale for micro-nano devices. Micro-injection molding is one of the main technologies for the manufacture of polymer micro-nano devices. Due to the small size of micro-nano devices, complex structure, and small injection flow channel, there are large filling resistance, uneven filling, material waste and molding quality in injection molding. Bad question. At present, the micro-injection molding machine is mainly made by changing the mold system or design on the basis of the conventional injection molding machine, and there are also the following problems: (1) The overall size of the micro-injection molding machine is relative...

AI Technical Summary

Problems solved by technology

Micro-injection molding is one of the main technologies for the manufacture of polymer micro-nano devices. Due to the small size of micro-nano devices, complex structure, and small injection flow channel, there are large filling resistance, uneven filling, material waste and molding quality in injection molding. Bad question

At present, the micro-injection molding machine is mainly made by changing the mold system or design on the basis of the conventional injection molding machine, and there are also the following problems: (1) The overall size of the micro-injection molding machine is relatively large, and the size of the mold runner is long, which is different from the molded micro-injection molding machine. The structural size of the nano-device does not match, the waste of polymer materials is serious, and the energy consumption is large; (2) there is a micro-channel effect, the filling is uneven, and the quality of the micro-nano device is poor.

[0003] In order to solve the problems of micro-channel effect and poor molding quality in the forming process of micro-nano devices, methods such as high injection speed, high injection pressure, vacuum treatment and variable mold temperature can be used, but there are problems such as increasing the molding cycle and large deformation of the mold. And other issues

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