| 摘要 |
Blind rivets are automatically fed into a nosepiece of a blind rivet-setting tool by having the nosepiece split into sections which are pivoted so that the rivet can be carried by the pulling jaws and pushed through from the rear. The tool operates with two strokes. In the second stroke an auxiliary air cylinder pulls the jaws back and cams a sleeve to rotate it, to feed a fresh rivet into the space between the jaws and the nosepiece. The jaws pick up the rivet on the forward stroke and push it through the nosepiece sections, these sections closing behind the rivet flange. Vacuum is used to discharge the spent rivet mandrel and to draw the fresh rivet back against the nosepiece ready to be set.
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