Gas cooling method for can forming

摘要

A cooling gas system for a can bodymaker tool pack is provided. The cooling gas system uses a compressed gas to cool a punch and/or a die pack. That is, a compressed gas is delivered to at least one location adjacent the punch and die pack. A nozzle assembly directs the compressed gas toward a selected location. As the compressed gas passes through the nozzle assembly, or immediately after passing through the nozzle assembly, the compressed gas expands. As is known, an expanding gas cools as it expands. Thus, a cool gas is directed to the surface of the punch and the die pack. The cool gas absorbs heat from the punch and die pack thereby cooling the heated components.

主权项

1. A cooling gas system for a can bodymaker tool pack, the can bodymaker tool pack having a reciprocating ram and a die pack, the ram having a punch mounted thereon, the die pack having at least one die ring with an opening sized to allow the punch to pass therethrough, the punch structured to axially pass through the die pack with a metallic cup on an end thereof during a forming stroke, wherein the cup is formed into a can while passing through the die ring, the can being stripped from the punch as the ram moves reversely through the die ring during a return stroke, the cooling gas system comprising:
a compressed gas system structured to deliver a gas to at least one nozzle assembly; and at least one nozzle assembly disposed adjacent to the die ring, the at least one nozzle assembly structured to direct a gas toward at least one of the punch and the at least one die ring.