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当前在设计斜导柱抽芯机构时采用螺栓及销钉从旁侧固定楔形锁紧块的形式较为普遍,但是在使用过程中由于估计不准,经常造成螺栓变形及断裂现象,有时甚至引起锁紧斜楔的变形而导致注射模的返工报废事件。为此有必要对螺栓的受力情况等进行认真地分析,并进行科学的计算,以保证螺栓及楔块具有足够的强度及刚度。 (一)斜楔锁紧块螺栓联接的计算:通常螺栓联接固紧锁紧块时有如下几种情况: (1)锁紧块无任何支撑而仅仅依靠若干个螺栓在同一水平面上固定的情况下,其
At present, the bolt and pin are used to fix the wedge-shaped locking block from the side when designing the bevel guide core pulling mechanism, but in the process of application, the bolt is often deformed and broken due to the inaccurate estimation, sometimes causing the locking Wedge deformation resulting injection mold rework scrapped events. For this reason, it is necessary to carefully analyze the force situation of the bolt and carry out scientific calculations to ensure that the bolt and the wedge have sufficient strength and rigidity. (A) the calculation of wedge locking block bolt connection: usually bolt connection tightening the locking block when the following conditions: (1) the locking block without any support and only rely on a number of bolts in the same horizontal plane fixed situation Under it