Patent ID: 6561097
Filing Date: 2003-05-13
Classification: B65H,Y10S

Abstract:
A sheet material positioning method, in which, sheet materials having a plurality of sizes are conveyed in a conveying direction so as to be loaded onto a surface plate, the method comprising:(a) loading a sheet material onto the surface plate; (b) removing an incline of the sheet material on the surface plate relative to the conveying direction; (c) moving the sheet material relative to the surface plate to a first predetermined position in the conveying direction; (d) moving the sheet material together with the surface plate in a direction orthogonal to the conveying direction, such that the sheet material is positioned at a second predetermined position; (e) recognizing at least one dimension of the sheet material in the direction orthogonal to the conveying direction before step (d); (f) selecting a sensor from a plurality of sensors, the selected sensor being closest to at least one corner of the sheet material based on the recognized dimension of the sheet material; and (g) detecting the corner of the sheet material by the selected sensor.