Reifenhäuser Gmbh & Co. Maschinenfabrik

Reifenhauser Gmbh Maschinenfabrik

Wolfgang Hax

Norbert Achterwinter

Josef Nowak

An apparatus for longitudinally cutting a longitudinally moving web has upper and lower guides flanking the web and extending transversely thereof parallel to each other, respective upper and lower blade holders riding on and displaceable along the guides transversely of the web, respective upper and lower blades on the holders engageable with the web, and respective upper and lower threaded adjustment spindles extending through the holders. Respective upper and lower half nuts are movable on the holders between coupled positions threadedly engaging the respective spindles and coupling the respective holders thereto and uncoupled positions out of engagement with the respective spindles. Respective upper and lower clamping rods extend through the holders and respective upper and lower clamping shoes are displaceable on the holders between clamping positions engaging the respective spindles and locking the respective holders thereon and released positions out of engagement with the respective spindles. Actuators are provided to displace the half nuts of the respective holders into the coupled position and to displace the respective shoes into the released position in an adjustment mode and to displace the half nuts of the holders into the uncoupled positions and to displace the shoes into the blocking position in a cutting mode. A drive rotates the spindles and thereby transversely displaces the holders and blades only in the adjustment mode of the actuator.

Apparatus for slitting a longitudinally moving web

Lowering mechanism is disclosed for the foil roll in a device for the winding of a foil web, particularly a synthetic-material foil web. A roll core with the finished foil roll can be received at its ends by lowering arms. It can be deposited on a discharge level by means of a lowering-arm drive. The lowering arms can again be raised with the aid of the lowering-arm drive. For each of the lowering arms, the lowering-arm drive has a lowering cam plate, these being identically built, congruently arranged and provided with an outer leading edge, which is basically shaped as a numeral 6. The lowering arms are guided on the leading edge by means of a guide element. The lowering cam plates are driven by a simple electromotor.

Lowering mechanism for the foil in a device for winding-up a foil web,

A device for winding up a foil web, particularly a foil web of synthetic material, into a foil roll on a roll core, has two swivel arms having roll-core receiving portions at their ends, a contact roller, and an actuating cylinder-piston arrangement for the swivel arms and the roll core drive. The swivel arms are swung according to the indication of the increasing diameter of the foil roll. In the area of the contact roller, a winding device with two swingable winding arms is arranged. A roll-core magazine is assigned thereto, having two magazine disks, which are oppositely located and rotatable about a horizontal axis and have corresponding receiving portions for the roll-core ends. To each magazine disk, a basically L-shaped guiding element is assinged which on the vertical flank of the L has an arched leading edge following the path of the roll-core receiving portions, which--over an assembly trough--continues with a downwardly inclined level which is a discharge edge. The winding device has winding arms swingable about a horizontal axis, which for the purpose of introducing a new roll core coming from underneath, grasp the ends of a roll core located in the assembly trough with their receiving ends and, by entraining the magazine disks and by winding the sectioned foil web over the inclined plane, bring it into contact with the contact roller, where the swivel arms of the device receive the roll core, whereby a further roll core of the roll-core magazine reaches the assembly trough.

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St. Augustin, Germany

Wolfgang Hax