Bowe Systec Ag

Mathias Bauerle Gmbh

Mathia Bauerle Gmbh

Maximilian Helmstadter

Josef Batzer

Karl Zimmermann

Karlheinz Weinmann

Stacked-sheet prefeeder

Knife folder

Device for producing a scaled stream with a controllable scaled-stream

A conveying device for sheets of paper, or similar materials, with some continuous conveyor belts (8 and 9) which are led over localized drive rollers (18 and 19) and also over localized return rollers (6, 7) and then over additional mutually displaceable turn-around rollers (27, 28, 29 and 30). The supporting frame includes a supporting guide track which runs between the return rollers (6, 7) and the drive rollers (18 and 19). The drive rollers (18 and 19) are mounted in a plane lying above the supporting guide track (1). A short sliding carriage (24) is provided as an adjustable component of the supporting frame, the carriage being adjustable, in an infinitely variable manner, and fixable in position on the upper side of the supporting guide track (1) between the drive rollers (18 and 19) and the return rollers (6, 7) by guiding elements and clamping elements. The drive rollers (18 and 19), the return rollers (6, 7 ) and the turn-around rollers (27, 28, 29 and 30) are, in each case, mounted in pairs on both sides of the supporting guide track (1) and are provided with conveyor belts (8 and 9) which run synchronously.

Conveying device with continuous conveyor belts for, in particular,

The device for feeding sheet stacks 26 has a guiding device 5, in which a plurality of endless guide belts 18, 19, which guide the sheet stack 26 to a motor-driven sheet feed device 8 arranged on a removal side of the sheet stack. The endless guide belts 18 are arranged in an essentially horizontal stack support surface 4. The essentially vertical, stack-side feed sections of the feed conveyer belts 35 of the sheet feed device 8 are subdivided by articulated rollers 38 of a horizontal articulated shaft 39 arranged in the upper third of the sheet stack 26 into a lower decollation section 33, which is sloped by more than 5.degree. and less than 30.degree. relative to the vertical line, and an upper, more highly sloped feed section 34. To achieve reliable decollation of sheets even in the case of sheets of paper carrying high electrostatic charge, an intermittent drive 75 is provided, which drives the sheet 26' lying on the decollation sections 33 of the feed conveyer belts 35 with pulse-like acceleration steps. In addition to or instead of this, the articulated rollers 38 may be eccentrically mounted on the articulated shaft 39 to cause the sheet stack 26 in contact with them to vibrate during rotation.

Sheet stack pre-feeder

The friction feeder for paper sheets is provided with a continuously rotating feed roller (2) arranged under a decollation plane and with an immobile decollating roller (4) arranged above it with parallel axis, forming an adjustable decollating gap. Continuously driven conveyor belts (14-17), whose delivery strands (14'-17') extend on both front sides of the feed roller (2) in the decollation plane are also provided. To achieve accurate starting and stopping of the decollation process, pre-decollating rollers (35, 36), which loosely lie on the delivery strands (14'-17') of the conveyor belts (14-17) in front of the decollating roller (4) in the delivery direction (arrow 7), and the pre-decollating rollers are mounted nonrotatably on a common, freely rotatable shaft (37), whose axis is parallel to the decollating roller (4), and the lowermost paper sheets of a sheet stack (23) located in front of the pre-decollating rollers are in contact with the pre-decollating rollers. These pre-decollating rollers (35, 36) can be lifted off from the delivery strands (14'-17') of the conveyor belts (14-17) by means of a lifting device (44-51) arranged under the decollation plane (1).

Friction feeder for paper sheets

Growing community of inventors

Villingen-Schwenningen, Germany

Maximilian Helmstadter