Abstract: An inclined position of a product, leaving a nip between two folding rollers of a longitudinal folding machine, is corrected. The product is pressed into the nip between the rollers by a folding blade that can be moved up and down relative to a folding table. The product thus leaves the nip between the rollers and is transported in a direction of transport. The time of passage of a leading or a trailing edge of a product is detected at two measurement points which are spaced apart from each other and which are arranged transversely to the direction of transport of the product to be folded. Based on the times of passage that are detected by the two measurement points, and on commutation and/or data processing techniques, a deviation between a time offset detected during the passage of the corresponding product edge at the two measurement points, and a nominal time offset, is determined and analyzed.

Abstract: A longitudinal folding machine comprises a folding blade and a folding table. The folding blade is driven with a cyclical frequency relative to one or more elements of a web-processing machine, or relative to a flow of incoming products. The entry of a leading edge of products is detected at a first measurement point. A relative phase position between the movement of the folding blade and the phase position of the elements and/or the phase position of the flow of products is modified by one of a control and a regulation device to adjust a contact point of the folding blade with the products to be folded. The relative phase position is modified such that the leading edges of the products to be folded are maintained at a distance from the measurement point on the delivery route.

Abstract: A longitudinal folding machine comprises a folding blade and a folding table. The folding blade is driven with a cyclical frequency, in a synchronized manner relative to one or more elements of a web-processing machine, which is located upstream of the longitudinal folding machine, or relative to a flow of incoming products. The entry of a leading edge of products is detected at a first measurement point on the delivery route of the folding table. A relative phase position between the movement of the folding blade and the phase position of the elements mounted upstream and/or the phase position of the flow of products is deliberately modified by the use of one of a control and a regulation device in order to adjust a contact point of the folding blade with the products to be folded.

Abstract: An inclined position of a product, leaving a nip between two folding rollers of a longitudinal folding machine, is corrected. The product is pressed into the nip between the rollers by a folding blade that can be moved up and down relative to a folding table. The product thus leaves the nip between the rollers and is transported in a direction of transport. The time of passage of a leading or a trailing edge of a product is detected at two measurement points which are spaced apart from each other and which are arranged transversely to the direction of transport of the product to be folded. Based on the times of passage that are detected by the two measurement points, and on commutation and/or data processing techniques, a deviation between a time offset detected during the passage of the corresponding product edge at the two measurement points, and a nominal time offset, is determined and analyzed.

Abstract: A folder includes a cutter for cutting a web of material into signatures, a folding device for producing at least one fold in a signature cut from the web of material, at least one delivery device and one conveyor path for directly feeding the cut signatures to the delivery device while avoiding the folding device. The signatures can be guided either by the conveyor path or through the folding device. A signature switch of the conveyor path distributes the signatures to two flies or paddle wheels that deliver to conveyor belt devices that are arranged in parallel to the rotational axes of the paddle wheels.

Abstract: A folder includes a cutter for cutting a web of material into signatures, a folding device for producing at least one fold in a signature cut from the web of material, at least one delivery and one conveyor path for directly feeding the cut signatures to the delivery device while avoiding the folding device. The signatures can be guided either by the conveyor path or through the folding device. A signature switch of the conveyor path distributes the signatures to two flies or paddle wheels that deliver to conveyor belt devices that are arranged in parallel to the rotational axes of the paddle wheels.

Abstract: A folder includes a cutter for cutting a web of material into signatures, a folding device for producing at least one fold in a signature cut from the web of material, at least one delivery device and one conveyor path for directly feeding the cut signatures to the delivery device while avoiding the folding device. The signatures can be guided either by the conveyor path or through the folding device. A signature switch of the conveyor path distributes the signatures to two flies or paddle wheels that deliver to conveyor belt devices that are arranged in parallel to the rotational axes of the paddle wheels.