| 摘要 |
PROBLEM TO BE SOLVED: To provide a hand capable of certainly gripping even a work of a bag not allowing vacuum suction. SOLUTION: This hand 1 comprises a pair of rollers 3, 4 disposed close such that the rollers 3, 4 turn to sandwiching directions to sandwich the bag and turn to opposite directions to the sandwiching directions to release the bag; and air motors or torque motors 6, 7 rotationally driving the rollers 3, 4.
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