| 摘要 |
<p>A high speed system for embedding antenna wire within a non-conductive (e.g. plastic) sheet on which electronic chips are mounted for manufacturing a plurality of smart cards, or the like. The antenna wire is installed in the non-conductive sheet by an ultrasonic actuator that is moved up and down relative to the sheet. The movement of the actuator relative to the substrate is controlled by the interaction between a stationary voicecoil magnet and a voicecoil that is coupled to the ultrasonic actuator and moveable with the slide assembly. Antenna wire is fed to the ultrasonic actuator from an antenna wire dispensing spool via an idler assembly. The idler assembly includes an encoder which is responsive to an increase in tension in the antenna wire feed line. Depending upon the output of the encoder, the speed and rotation of the wire dispensing spool is controlled until the tension in the antenna wire feed line is eliminated.</p> |
