Patent ID: 7134256
Filing Date: 2006-11-14
Classification: B65B

Abstract:
1. A packaging system, comprising: means for causing a beak-shaped hopper, formed by a pair of upper and lower groove-shaped members, and a pair of opening and closing bars, to move back and forth in unison along a main travel path leading to a rotary vacuum packaging device; means for extending and supporting an opening section of an uppermost packaging bag of packaging bags stacked in the main travel path, and conveying the bag into a pressure resistant chamber of the vacuum packaging device, by means of the back and forth movement of the beak-shaped hopper in the main travel path; means for causing a waiting station to move following the conveyance movement of the beak-shaped hopper into a pressure resistant chamber; means for detecting a resistance of the bag by opening the opening and closing bars towards both sides immediately after the bag has been conveyed into the pressure resistant chamber; means for conveying a to-be-packaged item waiting on the waiting station, into the bag, via the beak-shaped hopper, by means of a pushing bar, if the resistance of the bag is detected by the opening and closing bars; means for withdrawing the pushing bar, while leaving the item on the waiting station, when the resistance of the bag against the opening and closing bars is not detected; and means for detecting, by means of said sensor, movement of the opening and closing bars performing excessive opening due to the absence of a bag, when the edges of the opening of the bag are tensioned by further opening of the opening and closing bars, and for halting the operation of the entire device in accordance with this detection signal.