In accordance with this blow molding machine
In accordance with this blow molding machine
In accordance with this blow molding machine, a blow moulding machine is provided with an improved clamp which is capable of actuating the mold sections with very high closure forces and good alignment; further, the clamp is adapted to transfer a parisonbetween the extruding station and the blow station in its closed position without interference. This is accomplished by a clamp structure comprising a body disposed blow moulding machines and the blow pin and carrying opposed platens for supporting the moldsections on the upper side of the body. The clamp comprises a pair of levers, each pivotally coupled with a platen and with the body and also connected together by a pull bar. An actuating means displaces one of the platens relative to the body andequal and opposite motion is transmitted through the levers and the pull bar to the other platen. More specifically, the clamp includes a clamp body with actuating means for moving the first platen along a clamping axis.
Further, in accordance with this plastic injection molding machine, an improved lifting mechanism is provided to support the clamp for movement between the extruding station and the blow station. The lifting mechanism is adapted for vertical motion by means of ahydraulic motor acting on a lifting frame. The frame is mounted for vertical motion by two pairs of pivot links connected between the machine base and the frame. The pivot links in each pair are connected by a shaft which carries a crank arm. Thecrank arms are connected together by a tie rod so that all of the pivot points on the frame move in unison when the hydraulic motor is actuated.
In accordance with this blow molding machine, a blow moulding machine is provided with an improved clamp which is capable of actuating the mold sections with very high closure forces and good alignment; further, the clamp is adapted to transfer a parisonbetween the extruding station and the blow station in its closed position without interference. This is accomplished by a clamp structure comprising a body disposed blow moulding machines and the blow pin and carrying opposed platens for supporting the moldsections on the upper side of the body. The clamp comprises a pair of levers, each pivotally coupled with a platen and with the body and also connected together by a pull bar. An actuating means displaces one of the platens relative to the body andequal and opposite motion is transmitted through the levers and the pull bar to the other platen. More specifically, the clamp includes a clamp body with actuating means for moving the first platen along a clamping axis.
Further, in accordance with this plastic injection molding machine, an improved lifting mechanism is provided to support the clamp for movement between the extruding station and the blow station. The lifting mechanism is adapted for vertical motion by means of ahydraulic motor acting on a lifting frame. The frame is mounted for vertical motion by two pairs of pivot links connected between the machine base and the frame. The pivot links in each pair are connected by a shaft which carries a crank arm. Thecrank arms are connected together by a tie rod so that all of the pivot points on the frame move in unison when the hydraulic motor is actuated.
Further, in accordance with this injection moulding machine, a blow molding machine is provided with improved means for trimming the flash from the formed article. This is accomplished by power actuated punching means. Preferably, a first pneumatically actuatedpunch for removing a first flash is carried on a transfer member for transferring the article from the blow station to a receiving station. A second pneumatically actuated punch for removing a second flash is located at the receiving station.
A more complete understanding of this invention may be obtained from the detailed description that follows taken with the accompanying drawings.