Scientific and technological advances, plastics in all areas of the national economy has become an indispensable material, plastic injection molding machine is to achieve a major plastics processing machinery and equipment. Injection molding cycle generally consists of four parts: the injection time, cooling time, mold opening and closing times, the auxiliary time. Wherein the auxiliary time including product ejection time and Choucha core time. For medium-sized complex molds, auxiliary time about 10% to 15% of the molding cycle. In the injection molding production process, the various stages of operation of the injection molding cycle sequence relation exists, there is overlapping relationship, thereby allowing shortening the molding cycle. But each operation is limited overlapping relationship, and therefore can not be efficiently shorten the molding cycle. Existing vertical injection molding machines are generally used to improve the hydraulic proportional technology, double pumps, accumulators, mechanical, electro-hydraulic proportional control technology, servo motor, external hydraulic control to improve the production cycle, but with these methods are relatively high cost. Therefore, based on the original vertical injection molding machine, how to apply common hydraulic components, the existing vertical injection molding machine to optimize the design and improve the production cycle, to improve their efficiency and ensure the quality of products is important.
The author of a vertical injection molding machine to improve the design, the two neutron hydraulic valve in parallel vertical injection molding machine, hydraulic oil line parallel neutron after the oil port to connect the top of the cylinder into the oil chamber, the neutron the oil outlet connection back to the top of the cylinder oil chamber. Neutron improved hydraulic vertical injection molding machine can not only shorten the molding time and improve efficiency in injection molding, while the pulling mechanism to achieve two speeds, slow realization among the top of the child a solenoid valve work, which sub 2 solenoid valve work while achieving rapid ejection.
A basic thermodynamic properties of hydraulic components
The basic hydraulic components are divided into three kinds: capacitive element, resistive elements, emotional elements. Internal capacitive element hydraulic cavity, internal resistive element is not plenum, all hydraulic components by one or more of the basic hydraulic components. Hydraulic cylinders which are capacitive components, hydraulic valves are resistive elements.
2 AMESim simulation
With the development of computer technology, simulation technology has been evolving, simulation technology to improve the level of scientific research and shorten the research cycle, reduce research costs and risks, and promote the integration of different areas, accelerating the research results into productivity process.
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