Injection mechanism capable of preventing gas rollingand die-casting mold

Abstract

The invention discloses an injection mechanism capable of preventing gas rolling. The injection mechanism capable of preventing gas rolling comprises an injection feeding tube, the injection mechanism, a holding furnace and a sealing component, a hammer of the injection mechanism is inserted in the injection feed tube, the injection feed tube horizontally penetrates through a fixed die plate of adie-casting mold, an injection chamber communicating with the injection feeding tube is arranged in the fixed die plate, a molding entrance and a feeding port are respectively formed in the upper sideof the injection chamber and the lower side of the injection chamber, the molding entrance communicates with a mold cavity, the holding furnace is located below the die-casting moldand is connected with the feeding port through a liquid-rising tube, the holding furnace is connected with an outer gas booster device through a gas-inlet tube, the sealing component is arranged on the outer side of the die-casting mold, and the molding entrance is opened and the feeding port can be synchronously closed through the sealing component, or the feeding port is opened and the molding entrance can be synchronously closed through the sealing component. The injection mechanism capable of preventing gas rolling and the die-casting mold have the beneficial effects that gas rolling of a material liquid inthe injection process can be effectively prevented, and the quality and the pass rate are improved.

Description

technical field [0001] The invention relates to the technical field of molds, in particular to an anti-entrapment injection mechanism. Background technique [0002] In mold die-casting, in order to obtain excellent product quality, the first thing to solve is how to discharge the gas entrainment and gas in the cavity caused by insufficient filling of the material liquid in the injection cylinder. If the filling degree of the material liquid in the injection barrel is not enough, the material liquid will roll and entrain air during the injection process, so that the pressed product will have more sand holes, resulting in product quality problems. Especially for some existing thin-walled die-casting parts, the filling degree in the injection barrel is very low. When the injection punch pushes the liquid into the mold cavity, a large amount of air in the barrel will be involved in the liquid In the process, sand holes, cracks and other defects appear in the product, and the qu...

AI Technical Summary

Problems solved by technology

If the filling degree of the material liquid in the injection barrel is not enough, the material liquid will roll and entrain air during the injection process, so that the pressed product will have more sand holes, resulting in product quality problems

Especially for some existing thin-walled die-casting parts, the filling degree in the injection barrel is very low. When the injection punch pushes the liquid into the mold cavity, a large amount of air in the barrel will be involved in the liquid In the process, sand holes, cracks and other defects appear in the product, and the quality of the product cannot be guaranteed.

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