Method and apparatus for spreading sheets

Details Method and apparatus for spreading sheets Method and apparatus for spreading sheets

D - Textiles, Paper

06

C

159/1, 270/160

D06C 3/00 (2006.01) D06F 67/04 (2006.01) D06F 95/00 (2006.01)

Patent

CA 2004302

Abstract of the Disclosure A method for spreading thin soft rectangular articles such as cloth pieces, unwoven cloth pieces, paper sheets, plastic sheets, etc. (generally called "rectangular sheets") is disclosed. A part of a first edge including one corner of a rectangular sheet is suspended in the air as held nearly horizontally by gripping the one corner and another point on the edge by means of grippers which are slidable on a horizontal rail. Thereby a second edge of the rectangular sheet including the one corner is made to hang down nearly vertically. Then the lowermost end of the second edge is gripped by another gripper that is movable vertically along a vertical rail. Except for the one corner, the initially held part of the one edge is released, and the rectangular sheet is held with the two adjacent corners at the opposite ends of the second edge as gripped by two grippers which are movable on the rail. By separating these two grippers on the rail, the rec- tangular sheet can be spreaded out to be ready for the next step of processing. If necessary, a part of the horizontal rail is made tiltable so that the hanging sec- ond edge can be held precisely vertically for facilitating gripping of the lowermost end of the second edge by the gripper on the vertical rail.

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