Kleinewefers Gmbh

Jorg Prey

Josef Pav

Gerhard Hartwich

Apparatus which winds a running web onto a driven takeup reel employs a distancing roller which is spaced apart from the outermost convolution of growing roll on the reel and is moved away from the reel at a rate which is proportional to the rate of growth of the roll so that its spacing from the outermost convolution of the roll remains unchanged. A suction generating device is provided to evacuate air from a substantially gusset-shaped space which is defined by the outermost convolution of the growing roll and the web portion which advances from the distancing roller to the roll. This reduces the likelihood of entrapment of air between neighboring convolutions of the roll on the takeup reel. The likelihood of entrapment of air is further reduced by wiping air off one side of the web in the region of the distancing roller, by wiping air from the outer side of the outermost convolution of the roll upstream of the gusset-shaped space, and/or by causing a roller to bear against the outer side of the web immediately downstream of the locus where successive increments of the running web reach the roll.

Apparatus for convoluting webs of paper or the like

A calender wherein the end portions of the lowermost roll of the roll train was mounted for movement along vertical guide rails on the stand. The lowermost roll is movable upwardly by two upright hydrostatic cylinder and piston units with plungers whose axes are coplanar with the axis of the lowermost roll. When the cylinder and piston units lift the lowermost roll to operative position, shoulders on the bearings abut against stationary stops on the stand and the stops are disposed only at one side of the common plane of the aforementioned axes so that the bearings tend to jam against the adjacent portions of the guide rails as soon as the shoulders engage the respective stops. The jamming action is enhanced if the stops are remote from the aforementioned plane and if the guide rails have T-shaped heads which are slidable in complementary T-shaped grooves of the bearings. The stops are installed at the level of the axis of the lowermost roll.

Growing community of inventors

Tonisvorst, Germany

Jorg Prey