1. First, set the heating time for the shrink packaging machine
2. After pressing the manual or automatic button, the rack cylinder solenoid valve will be powered on and output to push the gear, and the gear will drive the chain. At this time, the rear proximity switch of the rack cylinder will be disconnected. When the rack cylinder runs to the top dead center, the front proximity switch of the rack cylinder will be on, and the oven cylinder solenoid valve will be powered on and output
3. When the oven cylinder runs to the top dead center, the timer starts to delay, and the rack cylinder solenoid valve is powered off
4. When the timing is over, the solenoid valve of the oven cylinder is powered off.
5. Decide whether to continue the next workflow according to the working mode flag
