| 摘要 |
<p>1277167 Making electrical leads AMP Inc 22 Oct 1970 [14 Nov 1969] 50182/70 Heading B3A [Also in Division G4] Apparatus for cutting off a required length of wire includes a motor driven capstan 42 (Fig. 1) feeding the wire from a roll 34, pulses from a pulse generator 52 being counted in a counter 56 as the wire is moved the motor being stopped when the count corresponds to the required length. As described the required length is set up by positioning contacts 154a-154d (Fig. 10) of a first multidecade selector switch 58, numbers corresponding to the length at which the speed of the motor is to be reduced to an intermediate speed and a slow speed being similarly set up on second and third selector switches 60, 62. As the wire is fed the count in binary coded decimal counter 56 of pulses from the generator 52 is decoded to decimal form in decoders 146a-146d the decoded outputs being connected to terminals of the collector switches. When output signals are detected from the four decades of the second selector switch 62 by the enabling of an AND gate the resulting signal on conductor 74 reduces the speed of motor 80 to its intermediate level. In a similar manner when all the outputs of the third and first selector switches are enabled the resulting signals on conductors 76 and 72 respectively slow and stop the motor. Feed rolls 12 (Fig. 1) are then energized to draw a loop of wire 50 resulting from the movement of capstan 42 to a wire processing machine where it is cut and electrical terminals (32), Fig. 6 (not shown), are crimped on to the cut edge by terminal applicators (28, 30). A roller (132), Fig. 8 (not shown), on a bell crank (128) mounted on a pivot pin (13) engages the wire on the capstan to prevent overlap.</p> |
