Two commonly used methods for designing injection molds to deal with product undercuts are to make a sloped top or a slider, as shown in the figure below. How do we structure this kind of undercut? When making a slider, there is bone interference and the mold cannot be released. In this case, we have to think about how to remove the slider from the inside of the slider. Let me share with you how to remove the slider from the inside of the slider.
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1. Design the slider insert first, leaving the bones inside untouched for now, as shown in the picture.
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2. Design the small slider, use a dovetail groove to drive the small slider, the pink square is the positioning block, the yellow drive block pulls in the direction of the arrow, due to the effect of the dovetail groove, the small slider slides downward and disengages from the underbuckle.
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3. Use the inclined guide pillar to drive the slider. The slider needs to do delayed core pulling. First drive the yellow driving block and drive the small slider to pull the core. After the undercut is released, the delayed core pulling is in place and continue to pull the core until all the core pulling is completed. Undercut.
