Patent ID: 6298635
Filing Date: 2001-10-09
Classification: A22C,B65B,Y10T

Abstract:
An improved method for sealing filled bags or tubular packages with closure clips in a sealing machine having a bottom tool and a stamp, comprising the steps of:providing a filled bag or tubular package having a part to be sealed;providing an open u-shaped closure clip and placing said closure clip in the bottom tool of the sealing machine;placing the part of the filled bag or tubular package to be sealed inside the open u-shaped closure clip;closing the closure clip by the stamp impinging on the legs of the u-shaped closure clip in the bottom tool, wherein said stamp moves towards the bottom tool thereby bending the legs of the closure clip into a closed position, at which point said movement of said stamp towards said bottom tool stops and is reversed;wherein the improvement comprises:operating said movement of said stamp by an adjustable actuator and controlling the degree of closure of said closure clip by determining the distance (X) between the bottom tool and stamp at their closest point with respect to each other by a distance sensor fixedly attached to one of either the stamp or the bottom tool and a reference surface attached to the other of said stamp or bottom tool; the sensor measuring the distance between itself and said reference surface, comparing said distance (X) with a predetermined value and, in the event of a deviation of said distance (X) from said predetermined values automatically adjusting said actuator in accordance with said deviation to adjust said movement of said stamp to maintain said distance (X) at said predetermined value.