| 摘要 |
PROBLEM TO BE SOLVED: To obtain a gripper device capable of accurately positioning a hollow body such as a preform, a bottle or the like, even a preform with a ratchet to strongly grip the same, capable of holding the hollow body to a stable posture even during the feed without inclining the same and capable of transferring and delivering the hollow body with high positioning accuracy. SOLUTION: In the gripper device having a pair of forks having gripping parts provided thereto in an openable and closable manner and gripping the hollow body, the gripping part 2 is formed from arcuate gripping surfaces 4 and groove-like cavities 3 are formed to the gripping surfaces along a circumferential direction and flanges 5 curved in a state concentric to the gripping surfaces of the gripping parts are formed to the side surfaces in the vicinity of the gripping parts of the forks in a projected state. |
