| 摘要 |
A blow mold includes first and second mold halves pivotally mounted about a pivot shaft and including boundary faces which engage with each other to form an internal chamber used to blow mold a hollow article. A locked member is located on the end of the first mold half opposite to the pivot shaft and is for locking relative to the second mold half when the boundary faces are engaged by each other. A locking member is movably supported by the end of the second mold half opposite to the pivot shaft, and is for locking the locked member when the boundary faces are brought into contact with each other and to unlock the locked member before the boundary faces are separated apart from each other. A mold drive/control mechanism responsive to the driving force from the single power source controls a) an operative step between the pivotal movement of the first and second mold halves toward each other and the subsequent locking motion of the locking member, and b) an operative step between the unlocking motion of the locking member and the pivotal movement of the first and second mold halves apart from each other. The mold drive/control mechanism can realize the harmonization of the pivotal movement of the first and second mold halves with the lock/unlock action of the locking member and the smooth drive of the blow mold in a positive and rapid manner.
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