| 摘要 |
Riveting apparatus of the type in which an elongated mandrel (30), having an enlarged head at one end and loaded with a plurality of the tubular rivets (40) forming a column of rivets on the mandrel, is gripped by gripping means (43) at or near the end remote from the head, and reciprocated relative to an abutment (32) by relative reciprocation between the gripping means (43) and the abutment (32), the rivets (40) in the column being fed forwardly along the mandrel (30) so that the leading rivet nearest the mandrel head is positioned between the mandrel head and the abutment (32) and can then be set by moving the mandrel (30) rearwardly relative to the abutment (32) so as to draw the head of the mandrel through the bore of the rivet (40) while the rivet is supported by the abutment (32); includes means (55) for feeding rivets (40) forwardly along the mandrel (30), and an abutment (32) provided by a plurality of members (28, 28) movable between a closed position (Fig. 3A) in which they provide an abutment (32) to support a rivet (40) as aforesaid and an open position (Fig. 3B) in which they allow the free passage of rivets (40) between them, and is provided with a control system (12) operatively connected to the appropriate elements of the apparatus (11) for controlling their operation respectively, the control system (12) including an actuation device (PB.4), such that, upon actuation by an operator of the actuation device (PB.4) the control system (12) controls the riveting apparatus (11) so that the rivet feeding means (55) is activated or de-activated, the abutment members (28, 28) are closed or opened, and the mandrel gripping means (43) is activated or de-activated, with a time delay between each step, to enable rapid removal and replacement of the mandrel (30). |
