Folding unit

A folding unit for corrugated cardboard sheets in inline production of corrugated cardboard boxes, comprising a pair of parallel and laterally displaceable folding beams each with an endless conveying belt which folding beams extend from the inlet of the folding unit to the outlet of the folding unit, a pair of folding rules which are arranged under the respective folding beams and which extend from the inlet of the folding unit and towards, but not all the way to, the outlet (20) of the folding unit, a pair of folding rods fixedly positioned outside the respective folding rules and at angle to the respective folding. rules, said folding rods being arranged in the folding unit front portion, seen in the conveying direction of the corrugated cardboard sheets, a pair of folding belts which are arranged under and cooperate with a respective folding rule and extend from an associated guide roller with a vertical shaft at the terminal end of the folding rod seen in the conveying direction to an associated guide roller with a horizontal shaft substantially adjacent to the outlet and a pair of wheel stands which are each engaged with the respective folding belts in a position in the conveying direction of the corrugated cardboard sheets after the terminal end of the folding rules and substantially adjacent to the respective folding beams whereby a corrugated cardboard sheet supplied at the inlet of the folding unit is grasped by the pair of conveying belts and conveyed along the folding rules and the two outermost panels of the corrugated cardboard sheet being successively folded from 0° to 90° by the respective folding rods in cooperation with the associated folding rule after which each panel folded 90° is engaged with the associated folding belt and the folding rule cooperating with said folding belt for continued folding and then leaves the associated folding rule to be contacted with the associated wheel stand and is finally delivered from the pair of guide rollers with a horizontal shaft, the panels folded 180°, at the outlet wherein each wheel stand comprises an attachment which is fixedly attached to the associated folding beam and in which at least one guide plate is fixedly attached perpendicular to the folding beam at least one wheel which is rotatably supported by a support, which by means of a pair of separate guide pins is turnably suspended from a pair of vertically arcuate slots in said guide plate and an actuator whose one end is turnably attached to the attachment and whose other end is turnably attached to the support, the angle of said wheel to the 20 associated conveying belt being set by means of the actuator and that the actuator is controlled from a driving and setting console in which the dimensions and properties of the corrugated cardboard sheets have been input and which, in operation of the folding unit, allows fine adjustment of the angular setting of the wheel stands.