Simple and reliable water injecting and draining device for water-driving projectile assisted injection molding process

Abstract

The invention discloses a water injecting and draining device which is simple in structure and reliable in action for a water-driving projectile assisted injection molding process. The device mainly comprises a valve body 2, a limiting support 4, a quick plug connector 11, a coupler 7, a lower gas core 9, a valve element sleeve 12, an upper gas core 16, a steel gas needle 17, a nozzle 18, a cylinder support 5, a multi-position thin-wall cylinder 6 and the like. The water injecting and draining device is high in transportability, and by means of the design of a gas injecting and water draining channel, reliable and effective water draining is guaranteed; shape sealing is combined with sealing ring sealing, and reliable sealing of a sizing material, a water injecting channel and the gas injecting and water draining channel is guaranteed; by means of the three-segment design of the nozzle 18, reliable sealing of the sizing material and water is also guaranteed; pulling-out is conducted in two steps, water in a cavity can be reliably drained; the multi-position thin-wall cylinder 6 is controlled by a solenoid valve to drive a valve element assembly to conduct grading up-and-down motion, so that all channels are sequentially connected or disconnected, the actions of water injecting, gas injecting and water draining and nozzle pulling out are achieved, and the actions are reliable; the water injecting and draining device is suitable for the water-driving projectile assisted injection molding process and other similar processes.

Description

technical field [0001] The invention relates to a simple and reliable water-driven projectile auxiliary injection molding process injection and drainage device, which can be used for experiment and production of water-driven projectile auxiliary injection molding process and similar processes. Background technique [0002] Different from the water-assisted injection molding technology, which uses water to penetrate directly into the rubber material to form a hollow, the water-driven projectile-assisted injection molding technology uses pressure water to drive the projectile to penetrate through the rubber material to obtain a hollow part. The hollow section mainly depends on The maximum cross-sectional shape and size of the projectile; this technology can form hollow plastic parts with larger cross-section, more complex, thinner and uniform wall thickness, and there is no limitation on the material of the part, so this technology has a wider range than water-assisted injectio...

AI Technical Summary

Problems solved by technology

The structure of this device is simple, but there are the following problems: the cost of mold manufacturing is high; the water injection device is not transplantable; gravity drainage requires a large nozzle, the drainage efficiency is low and the water cannot be completely emptied effectively; water leakage to the surface of the cavity will cause serious problems affect the quality of the product

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