The Paperfox TD-1 adhesive tape applicator head is an affordable solution for automated application of single- and double-sided self-adhesive tapes.
Controlling the tape applicator head with a single photosensor
In this case, the start and end of taping can be set by adjusting the position of the photosensor and using adjustable throttle valves mounted on the pneumatic cylinder. (As in the phot below)
Controlling the tape applicator head with two forosensors
Controlling the tape applicator head with a PLC or a microcontroller
The most flexible solution is to use a programmable controller to operate the solenoid valves that operate the pneumatic cylinders. The operation can be done with a delay in relation to the photosensor signal or with a rotary encoder that measures the exact position of the sheet.