DE1990355U - Offset sheet printing machine with drying device - Google Patents

Description

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Maschinenfabrik Augsburg-Jiürnberg, Aktiengesellschalt

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Offset sheet printing machine with drying ^; -

establishment ■ '■

The fire "refers to an offset sheet-fed press with a number of separate sheets from the printing unit for the delivery of conveying chain gripper systems, of which that promotes the sheets from the printing unit to a drying device and the one that promotes the sheets from the drying device to the delivery pile running in the horizontal direction and that leading the sheets through the drying device in the vertical direction, are arranged.

It has already been suggested about the chain boom distributed to arrange several irradiation devices in order to dry the printed sheet on the way from the printing press to the delivery and to be able to prevent smearing.

! It is also known to hold the sheet between the printing units Transport by means of a circulating chain. an air stream from- ^ add and allow the paint to dry before applying the next color .; ; .

At today's normal machine speeds and the tendency Such drying devices are, however, capable of increasing the brilliance of the print by burning off the topmost layer of ink no longer usable, just as little as, for example, dryer hoods that are inserted into the transport path of a web offset machine, are switched. . ^

In the case of the higher ones, which are inevitably necessary for burning off. Temperature, therefore, measures must be taken that will damage it the usual means of transport by pulling, jamming or annealing prevent and the safe takeover and ensure that the sheets are transported properly.

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■ According to the innovation, this will be the case with a sheet-fed offset printing machine. of the type mentioned achieved in that. the ". through, the -", Chain gripper system leading to the drying device with an overhead exit and the sheets from the drying device Chain gripper system that promotes the delivery stack is designed to run over the delivery stack. This measure results in the usual chain systems used for sheet transport, not in contact with the desiccant and can therefore not give rise to malfunctions. Through this, that the drying device is designed as an independent modular part, the overall structure of the printing machine itself, remain essentially unchanged.

The drawing shows an embodiment of the furnace in schematic representation shown.

The printed sheets are in a known manner, by means of the gripper endless chain systems 1 from the printing cylinder 2 of a printing unit or the last printing unit 3 of several arranged in series Printing units removed and transferred to a heat-resistant transport device 4. By means of this, the arches become one Drying device 5 supplied whose special training is not The subject of the invention is. Be in the drying facility the arc 1o for example - a gas flame 11, steam, infrared rays: Microwaves ο the like. For drying known means exposed, wherein the uppermost skin is burned off and the layer underneath is dried. After leaving the Dryer 5 expediently pass the sheets to a cooling drum 6 and are then passed on to a calender roll 7 ", through which the sheet, which has shrunk during drying, is stretched back to its original dimensions. To the calendering of the bow of the delivery chain 8 is transferred, which; deposits the sheet on the stack · 9.

The chain system 1 is expediently laid approximately horizontally, while the. Drying device 5, ü ± e on the modular principle as an independent. Unit is formed one

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Has vertical transport path. Chill roll 6, quayander 7 and chain boom 8, on the other hand, are advantageously in one arranged on the horizontal plane. In this way the previously usual transport route from Tom printing unit to the stack divided, but not fundamentally changed, so that the main dimensions of the machine remain.

Claims (4)

-16.68 t \ Vä asu Maschinenfabrik Augsburg-MrAbirg3, Aktiengesellschaft Augsburg;: y Stadtbachstrasse 1; .- ■ '-. - Gm.B. 94-0. ■■■ "" ~ 'Augsburg, June 5, 1968 Today's claims: 1.) Offset sheet-fed printing machine with a number "of each other separate chain gripper systems that convey the sheets from the printing unit to the delivery, from which the sheets are conveyed from the printing unit to a drying device and the sheets from the drying device to the delivery pile conveying in the horizontal direction and the leading the sheet through the drying device in the vertical Direction, running, are arranged, characterized in that that the chain gripper system leading through the drying device is provided with an overhead exit and the chain gripper system conveying the sheets from the drying device to the delivery pile via the Auslegestapel running ,, is formed. 2.) Offset sheet printing machine according to claim 1, characterized in that; that the drying device is designed as a closed modular part and by the The drying device running gripper chain is made of heat-resistant material. : J.) Offset sheet-fed printing machine according to claim 2, characterized in that that the drying device in a known manner with gas, steam, infrared rays, microwaves: or the like. is heated. 4.) Offset sheet-fed printing machine according to claim 1, characterized that between the the heater continuous gripper chain and the one to the delivery pile leading part of the chain cooling rollers, calenders or the like. : are provided in a horizontal arrangement .;