Quersiegelvorrichtung für eine Schlauchbeutelmaschine

摘要

A lateral sealing mechanism (17) for use in a bag-making and packaging machine includes movable rotary shafts (54). The movable rotary shafts (54) are driven by a lateral drive mechanism so that the distance between the shafts is controllable. Support mechanisms (53) are mounted on and rotatable about the shafts. The support mechanisms (53) support sealing elements (51) for forming lateral heat seals on a tubular packaging material from which the bags are formed. The support mechanisms (53) are such that the sealing elements (51) are tiltable with respect to the tubular packaging material, and so that two sealing elements can be maintained in directly opposed engagement to one another across the packaging material as the seal is formed. The machine includes a squeezing mechanism (150) that operates to force the packaged material downward within the tubular material and out of a sealing region before the seal is formed. The machine also includes a shutter mechanism (160) to force the packaged material upward and to prevent the packaged material from entering the sealing region as the seal is formed.