| 摘要 |
<p>A control system for a shoe upper conforming machine, more especially a pulling over and toe lasting machine, includes a computer control which supplies control signals sequentially, according to a programmed instruction, to actuating means for the various operating elements of the machine. In particular, the release of the grippers is controlled in relation to the movement of the wiper means. The actuating means for the wipers has a signal device associated therewith which each gripper has a reference signalling device associated therewith. The computer control compares the value of the signal from the signal device associated with the actuating means with the values of the signals from the reference signalling devices. Upon matching of signals, a control signal is caused to operate the gripper actuating means to release the gripper associated with the matched reference signalling device . Furthermore, the power supply to the actuating means for effecting gripping and pulling is independent of that for the actuating means for wiping over and securing the lasting margin to the insole, the arrangement being such that the power supply to the latter is operatively connected only after the operation of the former is completed so that, regardless of any control signals passed to the actuating means for the latter, no wiping can take place until gripping and pulling is completed .</p> |
