| 摘要 |
<p>A conveyor for transporting a workpiece from one die to another in a multistage press, so that successive pressing operations can be performed on the workpiece. Parallel carrier arms corresponding in number to the number of dies, are pivotally supported at one end, and the other end swings between a first position adjacent one die, and a second position adjacent the next successive die. The free ends of the carrier arms are tied together by spring-loaded, extensible link means, so that they swing as one. A rotating double cam acts on diametrically opposite cam followers on two carrier arms, causing the arms to oscillate between the first and second positions. Each carrier arm has a support rail slidably mounted thereon, with gripper jaws at one end to grip the workpiece. A connecting rod joins the other end of each support rail to a cam-actuated lever arm, and when the support rail is at one extreme position, the pivot center between the connecting rod and lever arm coincides with the pivot axis of the carrier arm.</p> |
