| 摘要 |
A guiding mechanism and method are provided for properly aligning molds or portions thereof, such as ejector plates, as they are cycled. The guiding mechanism is an improvement over conventional bushings which require that the mold in which the bushings are mounted to be removed from the press and disassembled and thereafter, the press fitted bushings are pressed out. Herein, the bushings are provided with a replaceable insert or portion that is easily disconnected from the remainder of the bushing such as by unthreading a threaded insert from a threaded bushing body without removing the mold half from the press. A first replaceable insert can be mounted in the bushing body which is sized to receive the leader pin to guide the leader pins therein and align the mold halves as they are moved to the closed position. Alternatively, the inserts are mounted on the pins and are sized to be received in the bushings which guides the pins and inserts therein to align the mold halves or to guide the mold ejector plates for movement thereon. The first replaceable insert is replaceable with the a second insert of the same size as the first insert. The method of running a press includes the cycling of the mold halves until the pin or bushing inserts are worn, and then replacing the worn inserts by disconnecting them from the insert bodies and connecting new inserts to the insert bodies without removing the mold from the press or disassembling the mold halves.
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