Parse the inner workings of the injection molding machine

Date：2016-06-28 10:13:45

Injection molding machine is a hot working properties of the plastic and metal die casting molten principle combines a special device. Initially plunger-type injection molding machine, the late 1940s, before the development of a pre-plasticizing screw injection molding machine. Since then, the focus of development mainly around the pre-plasticizing screw injection molding machine, twin-screw, vented and other advanced forms have emerged after the line.

In 1980 France was the world's largest screw injection molding machine, an injection capacity of 170kg. From the 1980s to recent years, the development of injection molding machine is mainly concentrated in several ways: automatic control system that is subtle and various auxiliary equipment in the automated molding applications; with precision machinery and high-performance hydraulic system; various special injection molding machines and the development of computer-aided design of complex shaped parts of plastic flow analysis to determine the best injection conditions; various energy-saving technology in the injection molding machine.

A working principle, the injection molding machine

Injection molding machine injection molding machine for short.

Injection molding is the use of plastic thermal physical properties of the material from the hopper into the barrel, outer barrel heating by the heating coil, so that the material is melted in a cylinder that has the power under the external action of a motor-driven rotating screw, the material in the screw cutting under the dual role gradually plasticized, melted and homogenized, when the screw rotates, the material under the effect of drop groove friction and shearing force, the molten material onto the screw head, at the same time, the material in the screw under the reaction back the screw head forming material storage space, complete plasticizing process, then the screw under the action of the injection cylinder piston reasoning, high speed, high pressure, the material storage chamber through a nozzle melt injected into the mold cavity the cavity in the melt after packing, cooling, curing stereotypes, mold under the effect of clamping mechanism, opening the mold, and the top of the device by setting a good product from the mold ejection fall.

Second, the injection molding machine will form the structural analysis

Injection molding machine according to the case of injection molding process requires a strong mechatronic models, mainly by injection components, mold components, airframe, hydraulic systems, heating systems, control systems, charging devices and other components.

Currently, there are common ear injection unit and form a single-cylinder two-cylinder type.

Plastics member having a plunger screw two. In the continuous rotation of the screw plastic push process, to achieve the change in physical state, the last in the molten state is injected into the cavity. Thus, the plastics component is the completion of a uniform plasticized achieve quantitative injection of core components.

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