PROGRESSIVE PUNCH

摘要

A progressive punch is used in a strapping machine for positioning and seali ng an associated strap material around a load. The punch is positioned in a jaw assembly that includes a movable punch support and a fixed punch support configured to receive the associated strap therebetween. The movable and fixed supports each include a t least one punch having at least two punching heads. The punching heads each have a height that is defined by a distance between an outermost peripheral point of the punching head and a plane perpendicular to the direction of movement. The heights of the punching head s are different from one another so that the punching heads progressively engage the strap, with the punching heads initially engaging the strap material at a different times fr om one another.