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为使具有较大平面的注塑件脱出动模并能可靠地落下,有时得采用非平衡顶出机构。这里介绍一种能实现上述要求的简易机构(见附图)。在垫板上需要延迟顶出的顶杆下钻孔并加工一沉孔,沉孔孔径与顶杆固定端的尺寸一致。在底板上设置一淬硬的挡钉3,伸入垫板5的孔内。挡钉的长度应等于垫板与止推钉4的厚度之和。顶杆固定板6与垫板用
In order to make the injection molding with a larger plane out of the movable mold and can be reliably dropped, it is sometimes necessary to use a non-equilibrium ejection mechanism. Here is a simple mechanism to achieve the above requirements (see attached). On the pad, it is required to delay the drilling under the ejector pin and to make a counterbore hole. The counterbore hole diameter is consistent with the size of the fixed end of the ejector pin. A hardened stopper nail 3 is arranged on the base plate, which extends into the hole of the base plate 5. The length of the stud should be equal to the sum of the thickness of the pad and the thrust stud 4. Mandrel fixed plate 6 with the pad