| 摘要 |
<p>A method and apparatus for spin flow necking-in a D&I can (C) is disclosed wherein an externally located free spinning form roll (11) is moved radially inward and axially against the outside wall of the open end of a trimmed can (C). A spring loaded (20) interior support slide roll (19) moves under the forming force of the form roll (11) as the latter slides along a conical forming surface (24e) of a second free roll (24) mounted axially inwardly adjacent the slide roll (19). To minimize the plug diameter variation between successively necked cans (C), the axial retracting movement of the slide roll (19) is halted at a predetermined location via contact with a spacer (1025) to prevent further radial inward movement of the form roll (11) which would otherwise occur as a result of only cam controlled form roll movement. <IMAGE></p> |
