TH20682A - "Gas feeding device for injection casting" - Google Patents

Abstract

A kind of gas feeding device It consists of (A) a gas feeding nozzle and (B) a sliding mechanism for the apex guide. One of the aforementioned gas feed nozzles. Into a state of forward motion And reverse in one of the guiding mechanisms Which was held in a socket and Communicate with one cavity and the outside of the said socket Where this gas feeder device Is used for feeding compressed gas Through the nozzle, the gas is fed into the molten resin that is injected into the cavity. Of the said socket That was attached to One injection casting machine to produce items produced by Casting with a hollow part With a special feature that One pocket Was held between the top of the nozzle Enter the said gas With the aforementioned guiding mechanism and at least part of the apex of the said gas-feeding nozzle. There was no contact with the navigation mechanism. When the molten resin is injected into the cavity.

Claims (5)

1.Gas feeder For use in molds attached to injection molding machines. To produce items manufactured with molds that It has a hollow section and is equipped with a guide section. It is connected to the mold gap and the outer part of the mold and to feed the high pressure gas into the molten resin injected into the cavity in the mold consisting of (A) one gas feeding nozzle. Which is equipped with a gas flow path to supply pressurized gas High into the molten resin That is injected into the gap and there is an allowance between the top and the nozzle guides so that at least one upper part of the nozzle does not come into contact with the guide when molten resin is injected into the gap. Of mold And the upper part of the nozzle tightly encapsulated in the guide section; and (B) a gas-fed nozzle sliding mechanism for inserting the upper part of the gas-fed injectors in a linear motion. Straight line to one side And rear in the guide section parallel to the axial line of the gas-feed injector, with this gap in the range Where the flow of molten resin into the gap is prevented. And where the pressurized gas in the central Which occurs in molded items Derived from Cool the molten resin to a solid state. Is released into the atmosphere through a margin when the upper part of the gas-fed nozzle moves backward. By the gas-fed nozzle sliding mechanism 2. Gas feeding device according to claim 1, where the cross-section of the upper part of the gas-fed injector and the guide part is fixed at a right angle to the axial line of the injector-type. With fixed area 3.Gas feeding device according to claim 1, where the cross-section of the upper part of the gas-feeding nozzle Corner holder Perpendicular to the axial line of the gas-fed nozzle A semicircle or polygon 4. Gas feeder according to claim 1, where the allowance between the guide sections And the upper part of the gas feeding nozzle is 0.003mm to 0.8mm. 5. Gas feeding device according to claim 1, where the surface at the upper end of the upper part of the gas-fed nozzle is assembled. Up with the walls of the gaps in the mold When the molten resin is injected into the gaps in the mold.