PROBLEM TO BE SOLVED: To improve positioning accuracy while suppressing a sheet material from being scratched by rubbing etc.;SOLUTION: A sheet positioning system 61 for positioning the second sheet material 13 supported by a sheet supporting surface 41 includes a pin rod 62, a pin cylinder 63 and a pin cylinder pressure control part 69. The pin rod is controlled to project in two stages. In the first stage, the pin rod 62 projects to the extent that the leading end shaft 67 is inserted into a positioning hole 18 of the second sheet material 13. In the second stage, the pin rod projects to the extent that the base end shaft 66 is inserted into the positioning hole 18. After the rod is projected in the first stage, the second sheet material 13 is raised and the pin rod 62 is caused to project to the second stage for accurate positioning while being brought into the raised state.;COPYRIGHT: (C)2012,JPO&INPIT
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