Patent ID: 6928787
Filing Date: 2005-08-16
Classification: B65B

Abstract:
1. A banding packing machine comprising: a common touch roller that comes in pressure contact with and separates from a normal rotating roller and a reverse rotating roller; band feeding means for causing the common touch roller to come in pressure contact with the normal rotating roller and for feeding a tip portion of a band in a packing machine body toward a band guide arch side; detecting means for detecting that the tip portion of the band arrives at a predetermined position on the band guide arch; band pulling back means for causing the common touch roller to come in pressure contact with the reverse rotating roller and for pulling back the band fed toward the band guide arch side based on a signal generated from the detecting means; band tightening means for tightening the band pulled back by the band pulling back means; one of a back pool box or a pool box which is partitioned in the packing machine body for temporarily storing the unused band pulled back by the band pulling back means and the band tightening means; and rotation speed detection means for detecting the rotation speed of the band feeding means, the band feeding means is contracted when the unused band stored in one of the back pool box or the pool box is to be used for a next banding process, said tip portion of the band is fed toward the band guide arch side by a driving force of the normal rotating roller and the common touch roller, and the band feeding means is contracted such that an amount of band required is reeled out directly from a band reel toward the band guide arch side and is fed toward the band guide arch side, wherein the rotation speed detecting means detects a rotating speed of the band feeding means when the required amount of band is reeled out from the band reel toward the band guide arch side by the driving force of the band feeding means, and the band is left on the band reel if the rotating speed of the band feeding means detected by the rotation speed detection means is changed, and the band is not left on the band reel if the rotating speed of the band feeding means is not changed.