Sheet feeding or delivering – Delivering – By endless conveyor
Reexamination Certificate
1999-09-24
2001-07-03
Ellis, Christopher P. (Department: 3651)
Sheet feeding or delivering
Delivering
By endless conveyor
C271S206000, C270S052190
Reexamination Certificate
active
06254088
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method of manufacturing printed products by insetting at least one subproduct and/or inserts into a main product, wherein at least the main products are grasped at the delivery of a printing machine by revolving gripping members of a conveying unit provided with an intermediate storage arrangement for inserting and delivering products, wherein the products are conveyed on conveying paths to an insetting machine formed of revolving insetting pockets, and wherein the products are taken up at the delivery of the printing machine by a first conveyor of the conveying unit connected to the insertion side of the intermediate storage arrangement and are transferred to a second conveyor of the conveying unit connected to the delivery side of the intermediate storage arrangement.
2. Description of the Related Art
The production quantity of a printing machine, for example, an offset rotation printing machine, is about 80,000 printed copies per hour which are taken up by conveying devices at the delivery for removal from the printing machine. The product quantity of between 40,000 and 80,000 copies per hour delivered by the printing machine has for a long time been processed by one or more insetting machines with the use of an intermediate storage arrangement.
This procedure requires processes which take a long time. In addition, the use of an intermediate storage arrangement makes it necessary that the printing sequence is uninterrupted, so that the product flow can be diverted to the intermediate storage arrangement when the operation of the insetting machine is interrupted.
For storing the products, winding rollers and similar units are used.
However, there is basically the desire to process the products without the use of the intermediate storage on winding rollers because in the winding rollers there is the tendency that the printed images are blurred as a result of the friction produced between the products when they are inserted and delivered.
SUMMARY OF THE INVENTION
Therefore, it is the primary object of the present invention to provide a method of the above-described type and an apparatus which make it possible to shorten the processing distances and to significantly reduce harmful steps resulting from intermediate storage and to reduce the investment costs.
In accordance with the present invention, the products grasped at the folds thereof are selectively transferred in front of the intermediate storage arrangement from the first conveyor with the folds facing forwardly on a direct transfer path to the second conveyor.
As a result of the method according to the present invention, a bypass is used which shortens the conveying paths between the printing machine and the insetting machine. Of course, this method also makes it possible to process subproducts or inserts in the same manner.
The method according to the present invention makes it possible to meet the requirements made of insetting machines and the products can be processed from the printing machine into the insetting machine without detours.
In accordance with an advantageous feature, the products taken up at the folds thereof at the delivery of the printing machine by the first conveyor are transferred also at the fold to the second conveyor leading into the insetting pockets of an insetting machine, so that handling of the products at the sensitive transfer locations is significantly simplified.
The transfer of the products from the first conveyor to the transfer path advantageously takes place in an inclined position extending approximately parallel to the transfer direction.
The apparatus for carrying out the method according to the present invention includes a conveying unit which picks up at least the main products by means of revolving gripping members at the delivery of a printing machine and transfers the products on a conveying path to revolving insetting pockets of an insetting machine, wherein the conveying unit includes an intermediate storage arrangement, and wherein a first conveyor connected to the intermediate storage arrangement at the insertion side thereof is provided for taking up the products at the delivery of the printing machine and a second conveyor of the conveying unit is provided at the delivery side of the intermediate storage arrangement for feeding the insetting pockets of the insetting machine.
In accordance with the present invention, the first conveyor is connected between the delivery and the intermediate storage arrangement to the second conveyor through a transfer unit which can be switched on and off, wherein the transfer unit is composed of clamps fastened to revolving traction means.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of the disclosure. For a better understanding of the invention, its operating advantages, specific objects attained by its use, reference should be had to the drawing and descriptive matter in which there are illustrated and described preferred embodiments of the invention.
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Kramer Felix
Linder Heinz
Ellis Christopher P.
Grapha-Holding AG
Kueffner Friedrich
Mackey Patrick
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