ANORDNING VED EN PAKNINGSMASKINE

摘要

An arrangement for the retaining of container blanks (1) in a predetermined correct position on mandrels (2) on a packing machine of the type which manufactures filled and closed packing containers from tubular container blanks and which comprises, among other things, a stepwise rotatable mandrel wheel (3) which is the bearer of mandrels distributed around the mandrel wheel which are intended to move container blanks applied to the mandrels in correct position between successive processing stations so as to achieve a bottom closure of the blanks. The arrangement comprises clamping elements (14) pressed against the mandrels in the form, for example, of a lever which is adapted so as to be pivotable in a bracket (15) at one lateral surface of the mandrel which has an upper clamping arm (14a) pressed against the mandrel and a lower manoeuvring arm (14b) rigidly connected with the clamping arm as well as a spring element (16) arranged at the top of the clamping arm (14a). The clamping element (14) and the spring element (16) can be disengaged from the mandrel through the effect of stops (17) located at one or more of the said stations which are adapted to act upon the manoeuvring arm (14b) so that the latter through a forced pivoting movement adjusts the clamping arm (14a) and the spring element (16) into a position wholly or partly disengaged from the mandrel (2).