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发明公开
CN109910249A 一种模具弧形抽芯结构 无效 - 驳回

一种模具弧形抽芯结构
摘要：
本发明公开了一种模具弧形抽芯结构，包括定模A和位于定模A下方的动模B，所述定模A包括型腔，所述动模B包括型芯、旋转型芯、动模底板、拉块、连杆，所述拉块固定于动模底板上，所述旋转型芯整体呈弧形，弧形的一端的形状与定模A的型腔相适应，另一端与连杆的一端铰接后连接至作为旋转型芯的旋转中心的转销，所述连杆的另一端通过腰形孔与拉块铰接。本发明结构简单可靠、成本低、动作可靠、适用性广；本发明稳定性好，拉块既起到动力传递作用，又起到锁紧作用。
摘要（英）：

The invention discloses an arc core drawing structure of a die. The arc core drawing structure comprises a fixed die A and a movable die B located below the fixed die A. The fixed die A comprises a cavity. The movable die B comprises a core, a rotating core, a movable die bottom plate, a pull block and a connecting rod. The pull block is fixed to the movable die bottom plate. The rotating core isoverall in an arc shape, one end of the arc shape is matched with the cavity of the fixed die A in shape, and the other end of the arc shape is hinged to one end of the connecting rod and is then connected to a rotating pin serving as the rotating center of the rotating core. The other end of the connecting rod is hinged to the pull block through a kidney-shaped hole. The arc core drawing structure is simple and reliable in structure, low in cost, reliable in action and wide in applicability. The arc core drawing structure is good in stability, and the pull block has a power transmission function and also has a locking function.

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