Resilient finger scrap stripper for corrugated board rotary cutting die

摘要

An apparatus configured to cooperate with a rotating anvil to cut corrugated board comprises a rotary cutting die configured to rotate in one direction and to cooperate with the anvil to cut corrugated board. The cutting die includes a base and at least one scrap cutting blade and a scrap stripper that comprises one or more fingers that project from the base at an incline and which is slanted forwardly in the direction of rotation of the cutting die for stripping cut scrap pieces of corrugated board from the blade.

主权项

1. A method of cutting and stripping a piece of scrap from a sheet of corrugated board passing between a rotary cutting die and an anvil where the rotary cutting die is rotated in one direction, comprising:
directing the sheet of corrugated board through a nip area defined between the rotary cutting die and the anvil; cutting the piece of scrap from the corrugated board with a scrap cutting blade as the corrugated board passes through the nip; engaging the cut piece of scrap with a scrap ejector secured to the rotary cutting die and comprising an elongated piece of resilient and compressible material that includes a base and a series of spaced apart forwardly angled fingers projecting from the base where each finger includes a leading end and a trailing end; positioning the scrap stripper on the cutting die such that the fingers and the leading ends of the fingers are angled forwardly from the cutting die in the direction of rotation of the rotary cutting die such that in a disengaged position the fingers and the leading ends thereof are angled forwardly in the direction of the rotation of the rotary cutting die; engaging the forwardly angled leading ends of the fingers with the cut piece of scrap and causing the forwardly angled fingers to bend back and project in a direction away from the direction of rotation of the rotary cutting die resulting in the fingers being compressed in the nip and resulting in the piece of scrap being held between the leading end of the fingers and the anvil; and as the rotary cutting die and anvil rotate and the cut piece of scrap emerges from the nip, releasing the bent back fingers allowing the fingers to spring forwardly to a forwardly angled position relative to the rotary cutting die and in the process stripping the piece of scrap from the scrap cutting blade and directing the piece of scrap away from the nip and away from the rotary cutting die and anvil.