초록 ▼

An article to be packaged and a packaging bag for covering the article are supplied to heat sealing mechanisms which arrive at uniform time intervals, in synchronism with cycle timing of the respective heat sealing mechanisms. A vertically openable beak-shaped hopper and a sliding plate perform reci

An article to be packaged and a packaging bag for covering the article are supplied to heat sealing mechanisms which arrive at uniform time intervals, in synchronism with cycle timing of the respective heat sealing mechanisms. A vertically openable beak-shaped hopper and a sliding plate perform reciprocal movement at a uniform time interval along guides on both sides, and arrive at circulating sealing platforms. The hopper is inserted into an opening of the packaging bag hanging down from above, and conveys the packaging bag to the sealing platform whilst extending the same. In response to a relevant signal, a forward-and-reverse motor coupled to a ball screw causes the article to advance following the hopper by an insertion rod moving along the guides. If there is no resistance of the packaging bag on the opening-and-closing bars which open to opposite sides, a packaging bag absence signal is issued, and according to this signal, the insertion rod is withdrawn together with the hopper, leaving the article on the sliding plate, and subsequent advance timing of the hopper is controlled.

대표청구항 ▼

1. A packaging system in which a portion of a winding path of a taped bag, formed by attaching openings of respective bags stacked in a scale-like fashion onto an adhesive tape, is formed horizontally, the opening of the foremost packaging bag hanging down from the adhesive tape in the horizontal po

1. A packaging system in which a portion of a winding path of a taped bag, formed by attaching openings of respective bags stacked in a scale-like fashion onto an adhesive tape, is formed horizontally, the opening of the foremost packaging bag hanging down from the adhesive tape in the horizontal portion of the travel path is pulled downwards and opened by vacuum cups, a beak-shaped hopper which opens in the upward and downward direction is inserted inside the opening of the packaging bag, the packaging bag is peeled off from the adhesive tape, an article to be packaged is accommodated inside the packaging bag via the hopper by means of an insertion rod which follows the course of the hopper, and the opening of the packaging bag is sealed after the packaging bag is placed in a vacuum state by means of a rotary vacuum packaging machine;the packaging system comprising:means for limiting the amount of movement of the respective front ends of the hopper and the insertion rod to a position up to the inner side of a circulating sealing platform;means for restricting the sliding motion of the packaging bag by pressing the opening of the bag against the hopper by means of a frictional element which presses on the under side of the hopper;means for blowing compressed air injected onto the upper face of the hopper, inside the packaging bag along the upper face of the hopper, and also blowing the air inside the packaging bag via the interior of the hopper as the hopper advances; andmeans for advancing a pair of opening and closing bars provided below the hopper, integrally with the hopper to a limit region, and temporarily standing by in the region after the hopper has been withdrawn, and causing the opening of the packaging bag to be stretched along the sealing platform by opening in opposite directions during a standby period. 2. The packaging system according to claim 1, further comprising a sensor for detecting the opening of the foremost packaging bag hanging down from the adhesive tape in the horizontal portion of the travel path, and an inching feed motor for the taped bag, wherein the front end of a packaging bag inched forward is detected by the sensor, and a vacuum suction pressure is applied to vacuum cups for sticking to the opening of the foremost packaging bag hanging down from the adhesive tape. 3. The packaging system according to claim 2, wherein a vacuum gauge is provided in a vacuum line for applying a vacuum suction pressure to the vacuum cups, and when a value read by the vacuum gauge rises, this is taken as a standby signal to start a forward operation of an insertion motor, and a forward operation start signal for the insertion motor is issued in connection with an article-to-be-packaged supply signal generated when the article to be packaged is detected by the first sensor. 4. The packaging system according to claim 2, wherein a signal for switching a plurality of cases is issued in a line for carrying in articles to be packaged, when a confirmation failure signal issued by a sensor for detecting the front end of the inched forward packaging bags passes over a set period of time. 5. The packaging system according to claim 1, wherein the hopper and the opening and closing bars constantly perform reciprocal movement between a loading table for articles to be packaged and a circulating sealing platform, using a motive force of the sealing platform, and after supplying the article on a belt conveyor onto the loading table, in response to a signal from a sensor for detecting an arrival of the article conveyed by the belt conveyor, the forward operation of an insertion motor is started in synchronism with the reciprocal movement of the hopper, and the article starts following the hopper by means of the insertion rod. 6. The packaging system according to claim 5, wherein the opening and closing bars, together with the hopper, are opened in a position where they are pushed to the inner face of the sealing platform which stops intermittently whilst circulating, and the opening of the packaging bag is stretched open by the opening action, thereby detecting the presence of the packaging bag. 7. The packaging system according to claim 6, wherein unrestricted opening of the opening and closing bars is detected by a sensor, and a reverse signal is issued to the insertion motor in accordance with the detected signal.