Patent ID: 10336486

Abstract:
A machine core of a packing machine includes a packing strap ironing adhering and strap cutting mechanism, an ironing adhering sliding board mechanism, and a control mechanism. The machine core includes a strap feeding and returning and strap tightening device, including a drive roller, a first driven roller, and a second driven roller. According to the entry direction of a packing strap, the first driven roller is located down-stream from the second driven roller. The first and the second driven rollers are arranged eccentrically. The first driven roller and the drive roller are always in contact and cooperate for feeding and returning the strap. The second driven roller is a movable roller, and is controlled by the control mechanism to move to a first matching state with the drive roller and to move out of the first matching state. The machine core enables movement of simultaneous strap returning and tightening.