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US 5,398,920 AGranted
Process and apparatus for delivering preferably folded printing products to a further processing point
AssigneeFerag AG
InventorWilly Leu
Life of this patent
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AssigneeFerag AG
InventorWilly Leu
Estimating the term…
By a first conveying device printing products are fed in an imbricated formation (S), in which each printing product rests on the following one, the fold edge of the folded products forming the trailing edge. The printing products are pushed into an intermediate stack from below. The respectively uppermost product of this intermediate stack is seized in the region of the fold edge by at least one sucker of a sucker arrangement, raised upward and brought into the conveying region (F) of a second conveying device. The latter has individually controllable grippers which are arranged at regular intervals, circulate along a closed path, seize the fold edges delivered by the sucker arrangement and convey away the printing products thus seized. By forming an intermediate stack, from which the printing products are then raised by the sucker arrangement at the desired rate and fed to the grippers, even imbricated formations (S) occurring with irregularities can be processed satisfactorily.
A process for delivering printing products to a further processing point comprising the steps in which the printing products are fed by a first conveying device in an imbricated formation, in which each printing product rests on a following one, and are taken over and further conveyed by a second conveying device to a further processing point, wherein, before being taken over by the second conveying device, the fed printing products are pushed one after the other into an intermediate stack from below, and wherein the intermediate stack has a bottom and a top, and an uppermost printing product at the top is kept substantially at a predetermined height by lowering or raising the bottom of the intermediate stack, and in each case the uppermost printing product of the intermediate stack is seized by a sucker arrangement and brought thereby into a conveying region of the second conveying device.
An apparatus for delivering printing products to a further processing point, comprising a first conveying device for feeding the printing products in an imbricated formation, in which each printing product rests on the following one, and a second conveying device for further transporting the fed printing products to a further processing point, which apparatus has a stacking point which is arranged in a conveying region of the first conveying device and at which an intermediate stack, charged from below, is formed from the fed printing products and supported on an adjustable rest, control means connected with the adjustable rest for setting an upper side of the intermediate stack essentially at a predetermined height by lowering or raising the adjustable rest in the event of a change of height of the intermediate stack, and a sucker arrangement which acts on an uppermost printing product of the intermediate stack for raising a respectively seized .printing product from the intermediate stack and delivering the same into a conveying region of the second conveying device.
Dependencies are inferred from the claim text.