| 摘要 |
PURPOSE:To certainly avoid the contact of a jaw for holding a workpiece with other members by allowing the jaw to move so as to draw a wave curve, in a loader for carrying in and out the workpiece into a working machine. CONSTITUTION:A circular link 7 is connected through a rod 6 onto a crank 5 revolved through a cam box, etc. by a motor 2, an a short link 9 is conected to the free edge side of the link 7 through a link 8. The other edge of the link 9 is connected through a swing arm 11 to the intermediate part of a link 12 constituting a parallel link 16 together with a link 13, bracket 14 for installing jaw, and a bracket 15. The top point 20a of a triangular link 20 is axially installed onto the bracket 15, and an arm 33 is connected through a connecting rod 34 onto one fulcrum P4 of a parallel link 25 including one side 17 of the triangular link 20 and a link 23. Said arm 33 can be swung through levers 28 and 32, following the movement of a roller 29 which contacts in slidable ways with a cam plate 27. |
