Material or article handling – Apparatus for moving intersupporting articles into – within,... – Stack forming apparatus
Patent
1991-10-23
1992-12-08
Huppert, Michael S.
Material or article handling
Apparatus for moving intersupporting articles into, within,...
Stack forming apparatus
414 13, 38 7, D06F 3704
Patent
active
051692821
ABSTRACT:
A method for spreading thin soft rectangular articles such as cloths, unwoven cloths, paper sheets, plastic sheets, etc. (generally called "rectangular sheets") is disclosed. A part of a first side of a rectangular sheet including one corner of a rectangular sheet is suspended in the air as held nearly horizontally by gripping the corner and another point on the side by grippers which are slidable on a horizontal rail. Accordingly, a second side of the rectangular sheet including the one corner is made to hang down nearly vertically. Then the lowermost end of the second side 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 side is released, and the rectangular sheet is held with the two adjacent corners at the opposite ends of the second side gripped by two grippers which are movable on the rail. By separating these two grippers on the rail, the rectangular sheet can be spread out to be ready for the next processing step. If necessary, a part of the horizontal rail is tiltable so that the hanging second side can be held precisely vertically for facilitating the gripping of the lowermost end of the second side by the gripper on the vertical rail.
REFERENCES:
patent: 3092263 (1963-06-01), Beaudry et al.
patent: 3092271 (1963-06-01), Beaudry et al.
patent: 4979860 (1990-12-01), Ueda et al.
patent: 4979868 (1990-12-01), Ueda et al.
Hattori Toshio
Ichimoto Hisashige
Ishida Koichi
Ishihara Hidetoshi
Ueda Atsushi
Hienz William M.
Huppert Michael S.
Mitsubishi Jukogyo Kabushiki Kaisha
Watakyu Shingu Co., Ltd.
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