VORRICHTUNG ZUM STANZEN VON FORMLINGEN ODER MATERIALBAHNEN

摘要

A bridge having a central cavity with open end portions includes an elongated lateral opening in the side portion of the bridge for providing lateral access to the central cavity. The bridge is longitudinally movable on the surface of a worktable which supports a punching knife with webs of material or blanks positioned thereon. A plurality of detachably connected cells are transversely positioned within the central cavity. Each of the cells includes a pressure roller and a counter-roller positioned in spaced underlying parallel relationship relative to the pressure roller. A servo-motor provided in the bridge is connected to each of the pressure rollers over a chain drive and is operable upon actuation to move the pressure rollers vertically in the central cavity to a preselected height above the counter-rollers. A ring member surrounding the upper portion of the bridge and rotatably supported thereon is positioned in underlying abutting relation with the surface of the pressure rollers. The ring member serves to protect the pressure rollers from the cutting edges of the punching knife as the web of material positioned thereon is introduced through the lateral opening into the space between the pressure and counter-rollers for compression by the pressure rollers to thereby form an impression upon the web of material.