| 摘要 |
1454652 Perforating printing and advancing AMP Inc 10 April 1974 [3 May 1973 21 Jan 1974] 15925/74 Heading G2A A web 10 for the production of printed circuits 12 between perforations 14 is passed through a perforation station 26 comprising a stationary head 32 having spaced pairs of apertures 36 and a reciprocatory head 38 having corresponding perforating pins 40, (b) a printing station 28 (operative at the same time as the perforation station) comprising a stationary printing head 86 having a spaced pair of recesses 88 and a pivotally reciprocatory clamp 90 having corresponding tapered registration pins 100, and (c) advancing means (operative between printing steps to advance the web the distance between alternate perforations) comprising a pair of spaced levers 62, each having an upper head 70 which moves in a D-shaped path and has a pair of tapered advancing pins 72. A common chain and sprocket drive 60 effects movement of head 38 (using eccentric 52), clamp 90 (against the bias of a spring 91, using a pair of eccentric cams 96) and levers 62 (against the bias of a spring 78, using pairs of cams 74 and 76). Instead of perforations 14 as shown in Fig. 1, there may be respective feed and locating perforations 102 and 104, Fig. 6, or 108 and 110, Fig. 7. |
