| 摘要 |
<p>57 Improvements in the mold opening and closing actuator mechanism in a multiple station, multiple clamp assembly rotary blow molding machine for the manufacture of plastic bottles and the like and improvements in the automatic unloader mechanism for the machine. In a rotary machine having an even number of stations and clamp assemblies rotatably indexable from station to station, the clamp assemblies are closed and opened by rotatable cranks and toggle mechanisms. Adjacent clamp assemblies are opened and closed by rotating the respective cranks in opposite directions for either the closing or the opening movements of the clamp assemblies. Rotary actuators at the mold closing and mold opening stations rotate 180" to actuate the clamp assemblies. By providing the above opposite rotational actuation of adjacent clamp assemblies the need to reverse or retract the rotary actuators during indexing of the clamp assemblies is eliminated as is the time required to reverse or retract. The clamp assemblies can thereby be more quickly indexed from station to station. The unloader mechanism at the mold opening station is mechanically driven from the rotary indexable table drive of the machine thereby providing positive mechanical timing for the unload- pr to grasp the part and lift the part from the mold as the mold halves separate. The mechanical drive includes a crank drive for vertical motion of the unloader and a rotary indexable drive for movement of the part from the mold opening station to a nearby conveyor.</p> |
