Abstract: A wind-up apparatus for forming laps comprises a first winding roller, a second winding roller, a lap bobbin tube and a plurality of, for instance four, calender rolls. The calender rolls serve for consolidating a fiber layer into a windable fiber web. Each calender roll of the predetermined number of calender rolls has a predetermined rest position and an operating position. A guide structure is provided for the calender rolls to enable the calender rolls to be movable within a given mobility range defined between the rest position and the operating position. The guide structure comprises force-producing elements for moving the calender rolls into the predetermined rest position thereof.

Abstract: A wind-up apparatus for forming laps comprises a first winding roller, a second winding roller, a lap bobbin tube and a plurality of, for instance four, calender rolls. Each calender roll is movably mounted at each of its opposite ends by means of a spring pair receiving the calender roll. Each spring pair is fixedly connected at one end to a bearing member of the related calender roll and at its other end by means of a carrier to side walls of the wind-up apparatus. A piston of a pneumatic cylinder moves the calender rolls from a rest position, in which there is a spacing D between the calender rolls and a spacing E between the last calender roll and the first winding roller, into a working position in which the calender rolls are pressed against one another in the absence of an intervening fiber layer. The position of the calender rolls in their rest position is maintained by the spring pairs.

Abstract: A ribbon lap unit contains support shafts for receiving and supporting a lap, a web transport means in the form of a web drafting mechanism, a web diverter, a diverter plate arrangement and a web collecting element. A web unrolled from the lap is fed through the web drafting mechanism and around the web diverter onto the diverter plate arrangement and thereafter onto the web collecting element. By means of the web diverter it is possible to arrange the diverter plate arrangement beneath the drafting mechanism. This, in turn, enables constructing a very compact machine.

Abstract: A winding apparatus for forming laps has two winding rollers and on each side thereof a carrier arm for receiving a lap bobbin. Each carrier arm is pivotably connected on one end with a sliding guide and on the other end with a pivoting mechanism. A hinge joint and a pivot pin provide these pivotal connections. The pivot mechanism is pivotally supported in side walls of the apparatus by shafts. The pivotal movement is accomplished by a pressure air cyclinder. During pivoting of the pivoting mechanism about the shafts the carrier arms are shifted in a predetermined direction. In FIG. 1, the lowermost position of the therein depicted carrier arm is shown in which the lap bobbin rests on the winding rollers. Through rotation of the winding rollers the lap bobbin rotated and takes up a web delivered from calender rollers for the formation of a lap. The build-up of the lap causes lifting of the carrier arms in such predetermined direction.

Abstract: The can changing apparatus operates so that the full can and empty can are arranged to move in guide paths which are at a right angle to each other. A simultaneous exchange of the cans takes place with one can being shifted at a constant speed while the other can moves with a speed characteristic which corresponds to a tangent function. The support members on which the arms for pushing the cans are mounted are connected, for example by a rigid curve rod, a resiliently bendable rod, or a linked arm such that one support member moves the other.