Ejector retainner plate free injection mold and product demoulding method thereof

Abstract

The invention relates to the technical field of injection molds and provides an ejector retainner plate free injection mold and a product demoulding method thereof. The ejector retainner plate free injection mold comprises a fixed mold part and a movable mold part; the fixed mold part comprises a fixed mold plate and a first air collection block joint; the fixed mold plate is provided with a firstair passageway; the movable mold part comprises a movable mold plate and a second air collection block joint; the movable mold plate is provided with a second air passageway; a first air ejection component is arranged in the air outlet of the first air passageway and comprises a first piston component, and the first piston component is used for pushing a product during the mold opening process and enabling the air outlet and an injection molding cavity to communicate; and a second air ejection component is arranged in the air outlet of the second air passageway and comprises a second piston component, and the second piston component is used for pushing the product during the mold opening process and enabling the air outlet and the injection molding cavity to communicate. Compared with theprior art, the ejector retainner plate free injection mold eliminates an ejector pin, the ejector retainer plate, a resetting rod and a middle dragging piece, so that the overall thickness of the mold is reduced, and the using cost of the mold is lowered.

Description

technical field [0001] The invention relates to the technical field of injection molds, in particular to an injection mold without a ejector plate and a product demoulding method thereof. Background technique [0002] At present, ejector pins are plastic mold accessories and are used in plastic molds. [0003] The traditional ejection system generally includes ejector plate, ejector bottom plate, reset lever, center drag, ejector pin, cup head screw and other components. The ejector pin is used to eject the product, let the product eject from the mold cavity, and eject the product from the mold Separated from above. Ejection principle: During the mold injection molding process, the mold cavity is filled with molten plastic. After cooling, when the product is about to be demoulded, the ejector plate is pushed by the push rod of the injection molding machine. Set the position, the thimble ejects the product to realize the separation of the product from the mold, and the ejec...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an injection mold without ejector plate and its product demoulding method to solve the technical problems of large mold size, complex structure and high cost in the prior art

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