| 摘要 |
<p>There is disclosed a clinching device comprising:- two rotatable clinching rolls (6 and 7) capable of acting on opposite sides of a body (A, B) located between the two rolls; means (8) for causing rotation of at least one of the two rolls; and abutment means (10) capable of being urged against the body, in a direction generally parallel to the axes of rotation of the two rolls; wherein the device also includes air-release means (22) by which air under pressure (21) is releasable in the region of the abutment means (10) to provide in use an air cushion (23) between the abutment means and the body. <IMAGE></p> |
