Motor Control System and Method for a Rotary Hole Punch System

摘要

A sheet processing apparatus and methods of utilizing the same. The sheet processing apparatus includes a punch mechanism disposed along a media path at a punch point at which a hole is to be punched through a punch location on a media sheet advancing along the media path. The punch mechanism includes a rotatable punch arm having a punch head, and a punch motor for rotating the punch arm. As the punch location on the advancing media sheet approaches the punch point, speed of the punch motor is controlled to adjust a rotational speed of the punch arm based on feedback signals associated with each of the punch motor and a media path motor used to advance the media sheet such that the punch head arrives at the punch point at substantially the same time as when the punch location on the media sheet arrives at the punch point.

主权项

1. A sheet processing apparatus, comprising:
a plurality of feed rolls disposed along a media path through the sheet processing apparatus; a media path motor operatively coupled to the plurality of feed rolls for rotating the plurality of feed rolls to advance a media sheet along the media path; a first sensing mechanism associated with the media path motor for sensing motion of the media path motor and providing a motion feedback signal associated therewith; a punch mechanism disposed along the media path at a punch point at which a hole is to be punched through the media sheet advancing along the media path at a predetermined punch location on the advancing media sheet, the punch mechanism including:
a rotatable punch arm having a punch head at a free end thereof;a punch motor operatively coupled to the punch arm for rotating the punch arm during a punching operation, the punch arm rotatable to the punch point at which the punch head is engageable with the media sheet to punch a hole through the advancing media sheet at the punch location while passing through the punch point; anda second sensing mechanism associated with the punch motor for sensing motion of the punch motor and providing a position feedback signal associated therewith; and a controller coupled to the media path motor, the punch motor, and the first and second sensing mechanisms, wherein as the punch location on the advancing media sheet approaches the punch point, the controller receives the feedback signals associated with each of the media path motor and the punch motor from the first and second sensing mechanisms, respectively, and controls a speed of the punch motor to adjust a rotational speed of the punch arm based on the feedback signals from both the first and second sensing mechanisms so that the punch head arrives at the punch point at substantially the same time as when the punch location on the advancing media sheet arrives at the punch point.