Sheet feeding or delivering – Feeding
Reexamination Certificate
2001-05-16
2004-12-21
Kramer, Dean J. (Department: 3652)
Sheet feeding or delivering
Feeding
C271S009080, C271S164000
Reexamination Certificate
active
06832758
ABSTRACT:
BACKGROUND OF THE INVENTION
Field of the Invention
A mobile feeder for separating flat products is described. The invention relates to a feeder for separating flat products, in particular for feeding folded sheets, flat sheets, cards, inserts and the like to printed-product processing machines, such as in particular gatherer stitchers, collating machines or inserting machines.
In order to produce printed products, such as brochures, books or magazines, it is necessary to collate a number of folded or flat sheets or cards or similar printed material, in order that they can be processed in a stapling machine or an adhesive bonder to form an end product. In addition, inserts, such as brochures, CDs, or similar printed or unprinted material are often introduced into open printed products in inserting machines or inserters, as they are known. In order to implement this technological sequence, feeders are disposed above a transport device, for example the gathering chain as it is known. Depending on the material to be processed, this is a feeder for processing horizontal or vertical stacks. In this connection, printed-product processing machines are understood to be machines for working on and/or processing printed products, such as gatherer stitchers, collating machines, inserting machines, adhesive binders or the like.
Published, Non-Prosecuted German Patent Application DE 197 52 015 A1 discloses, for example, a gatherer stitcher for producing printed products, such as periodicals, brochures, books or magazines. The gatherer stitcher has a row of feeders disposed one after another, and a transport device and a station for stapling and cutting the product. The typical machine configuration in this case has feeders permanently connected in series. The necessary feeders are fixed to a machine frame and permanently connected to the stapling machine. Depending on the embodiment, all the components can be moved both by a common shaft from a common drive source and by individual drives.
However, the known construction of feeders of this type for producing brochures, books or magazines or inserting machines, that is to say printed-product processing machines, has a significant deficiency. The position, that is to say the order of the feeders, is fixed and can be changed mechanically only by considerable effort. The feeder superstructure must be placed at this position by lifting machinery and must be connected there to the feeder subframe both mechanically, pneumatically and electrically. If a feeder is not used to produce a specific product, it has to be switched off and remains unused on the machine. The order of the feeders disposed one after another, that is to say their topology, is fixed. Changing the machine equipment, by feeders being moved to specific positions, cannot generally be implemented without technical aids, such as lifting machinery, and only with some expenditure of time.
SUMMARY OF THE INVENTION
It is accordingly an object of the invention to provide a mobile feeder system that overcomes the above-mentioned disadvantages of the prior art devices of this general type. The invention is based on the object of proposing a feeder for separating flat products, in particular folded sheets, flat sheets, cards and the like, for printed-product processing machines, such as in particular gatherer stitchers, collating machines or inserting machines, which permits flexible configuration of a system for producing printed products. In particular, the object is to propose a feeder with which it is possible to configure an apparatus for gathering printed products or for inserting inserts into printed products for producing periodicals, brochures, books or magazines in a flexible way.
With the foregoing and other objects in view there is provided, in accordance with the invention, a feeder for separating and feeding flat products, including feeding folded sheets, flat sheets, and cards, to printed-product processing machines, including gatherer stitchers, collating machines and inserting machines. The feeder contains a feeder superstructure, and an apparatus attached to the feeder superstructure for ensuring mobility of the feeder superstructure.
According to the invention, therefore, the feeder is provided with an apparatus that permits its mobility. The static connection between the feeder and the transport device of the machine is cancelled. For this purpose, the feeders are constructed in a modular and mobile fashion. They have similar connection dimensions and installation space dimensions. In other words, all the feeders are each mounted on an identical subframe as a supporting device and are configured separately from the rest of the machine. The two parts together form a module, so that they can be moved independently of the transport device and therefore, for example, with the aid of a lifting trolley. The subframes are advantageously configured to be mobile by a suitable apparatus. In a preferred embodiment, the feeder modules are equipped with wheels or rollers. The wheels or rollers can be fixed in the installed case or when desired. The modular construction makes it possible to determine the position of the feeders freely in relation to the transport device. Because of the mobility of the feeders, it is possible to change their position. Likewise, the topology of the order of the feeders can be changed.
In an advantageous development, the subframes have stops, so that positioning the feeders in relation to the transport device of the machine without difficulty is made easier. It is advantageous for the drive to the individual feeders in each case to be configured as an individual drive, so that only an electronic connection has to be produced for the purpose of interchanging data and/or control signals between the machine subassemblies of the feeders and the remaining subassemblies.
The transport device, in particular the gathering chain subframe on a gatherer stitcher, is advantageously prepared by appropriate stop devices for fixing the feeders.
The invention makes it possible to provide a system for collating printed products with feeders, which can be of different types, and a transport device. The system, provided for example on a gatherer stitcher, a collating machine or the like, is in principle independent, since it is configured separately from the rest of the machine. The system and the rest of the machine together form the gatherer stitcher, the collating machine, the inserting machine or the like. As a result of the flexible configuration of the feeder area of a gatherer stitcher, a collating machine or an inserting machine, an appropriate topology for the feeders can be selected, depending on the production job. It is therefore possible to fall in individually with customer requests.
With feeders of this type, or with a system of mobile feeders, it is possible for the printed-product processing machine to be changed over in a short time and without particular specialist knowledge. There is now the possibility of interchanging various types of feeders for folded sheets, flat sheets, cards or the like. It is likewise possible to bring up and to position the feeders from both sides to the axis defined by the transport device. Depending on the requirement, a feeder area of various types of feeders and with a variable number of feeders, which are positioned from the right and from the left with respect to the transport device, can be put together. Feeders can now also be used for different and various types of installations or machines, by being interchanged simply between the installations. In the event of maintenance and service requirements, the respective feeder can be replaced simply and quickly. Maintenance, repair or a test run can be carried out without any connection to the entire installation.
The use of mobile feeders is to be viewed as particularly advantageous on a gatherer stitcher that is provided with mutually synchronized individual drives, at least for a number of the individual movements to be implemented.
In accordance with an added feature of
Richter Lutz
Sommerer Frank
Heidelberger Druckmaschinen AG
Kramer Dean J.
Lowe Michael
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