In addition to the video, the intimate Xiaoqi also prepared a detailed tutorial for you to watch enough ~
In injection molding production, due to the material or wall thickness of the product, one or more parts of the product surface are often whitened or deformed by the ejector pin. In order to save labor cost, it is necessary to automatically separate the product from the cold runner when demoulding.
After some products are ejected, they can't automatically fall off because of too deep or too many reinforcing ribs, so it is necessary to boost the ejector pin to help the products fall off.
In all the above cases, we can consider designing a delayed ejection mechanism in the injection mold.
As shown in the following figure, the insert needle is designed at the bottom of the thimble cup, and the empty hole of the insert needle cup must be larger than that of the thimble cup.
In the process of ejection, the delayed ejector pin is resisted by the molded product and does not move with the needle plate, but the product begins to demould under the force of the ejector pin.
When the designed delay stroke is completed, the pin is blocked by the cup head, and the delay thimble is ejected together with the needle plate to complete all ejection actions.
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