Expanding method
AssigneeDisco Corporation
InventorsAkiko Kigawa, Shinichi Fujisawa, Masayuki Matsubara
Life of this patent
Estimating the term…
Abstract
A method of expanding a sheet includes the steps of gripping the sheet with a first gripping unit and a second griping unit and gripping the sheet with a third gripping unit and a fourth gripping unit, and expanding the sheet by moving the first gripping unit and the second griping unit away from each other in first directions relatively and moving the third gripping unit and the fourth gripping unit away from each other in second directions relatively. In the step of expanding the sheet, the states of the sheet that is under tension are detected, and movement of the first gripping unit, the second griping unit, the third gripping unit, and the fourth gripping unit is controlled based on the detected states of the sheet.
Claims15
A method of expanding a sheet, comprising the steps of:
- gripping the sheet with a first gripping unit and a second gripping unit that are disposed in facing relation to each other along first directions and with a third gripping unit and a fourth gripping unit that are disposed in facing relation to each other along second directions perpendicular to the first directions;
- and
- thereafter, expanding the sheet by moving the first gripping unit and the second gripping unit away from each other in the first directions and moving the third gripping unit and the fourth gripping unit away from each other in the second directions;
- wherein
- the step of expanding the sheet includes the steps of detecting the state of the sheet that is under tension in the first directions and the state of the sheet that is under tension in the second directions, wherein the steps of detecting the state of the sheet comprise detecting tensions in the sheet in the first directions and in the second directions;
- and
- controlling movement of the first gripping unit, the second gripping unit, the third gripping unit, the fourth gripping unit based on the detected tensions.
A method of expanding a sheet, comprising the steps of:
- gripping a sheet with a first gripping unit and a second gripping unit that are disposed in facing relation to each other along first directions and with a third gripping unit and a fourth gripping unit that are disposed in facing relation to each other along second directions perpendicular to the first directions, wherein during the gripping step the sheet does not have a workpiece stuck thereto;
- and
- thereafter, expanding the sheet by moving the first gripping unit and the second gripping unit away from each other in the first directions and moving the third gripping unit and the fourth gripping unit away from each other in the second directions, wherein during the expanding step the sheet does not have a workpiece stuck thereto;
- wherein
- the step of expanding the sheet includes the steps of detecting the state of the sheet that is under tension in the first directions and the state of the sheet that is under tension in the second directions, wherein the steps of detecting the state of the sheet comprise detecting tensions in the sheet in the first directions and in the second directions;
- and
- controlling movement of the first gripping unit, the second gripping unit, the third gripping unit, the fourth gripping unit based on the detected tensions.
Dependencies are inferred from the claim text.