DE80075C

DE80075C -

Info

Publication number: DE80075C
Application number: DENDAT80075D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

KLASSE 15: Druckerei. ,./ ... ί/CLASS 15: Printing. ,. / ... ί /

Bei den gebräuchlichen Schnellpressen für Schön- und Wiederdruck werden zwei Druckformen, die eine für den Schön-, die andere für den Wiederdruck, hinter einander unter einem oder mehreren Druckcylindern durchgeführt. Diese Anordnung beding! einen grofsen Hub, der ein schnelles Arbeiten der Maschine erschwert und eine verhältnifsmäfsig grofse Länge der Maschine verlangt.With the common high-speed presses for front and back printing, two printing forms, one for the perfecting, the other for the reprint, carried out one after the other under one or more printing cylinders. This arrangement requires! a large hub that enables the Machine difficult and requires a relatively large length of the machine.

Dieser Nachtheil wird bei der vorliegenden Construction dadurch vermieden , dafs die Wiederdruckform neben der Schöndruckform in der Querrichtung der Maschine angeordnet wird, so dafs beim Hingang des Karrens zuerst eine Seite des Bogens auf der einen Hälfte einen Abdruck der Schöndruckform und zu gleicher Zeit auf der anderen Hälfte einen Ab-. druck der Wiederdruckform erhält. Der Bogen wird hierauf nicht wie seither in der Längsrichtung , sondern in der Querrichtung gewendet und dem Druckcylinder zugeführt; bei dem nun erfolgenden Rückgang des Karrens wird wiederum ein Abdruck der Schön- und Wiederdruckformen zur gleichen Zeit auf der anderen Seite des Bogens erzielt, so dafs die Maschine bei jedem Spiel zwei doppelseitig bedruckte Exemplare liefert.This disadvantage is avoided in the present construction by the fact that the Reprint form arranged next to the straight printing form in the transverse direction of the machine so that when the cart comes down first one side of the arch is on one half an imprint of the straight printing form and at the same time an imprint on the other half. printing of the reprint form. The bow is then no longer in the longitudinal direction as it has been since then , but turned in the transverse direction and fed to the printing cylinder; with the decrease in the Karrens, in turn, an imprint of the perfecting and reprinting forms is achieved at the same time on the other side of the sheet, so that the machine delivers two double-sided copies for each game.

Die Fig. 1 bis 3 der beiliegenden Zeichnungen stellen die Maschine für Schön- und Wiederdruck mit neben einander liegenden Formen dar. Fig. 1 und 2 zeigen dieselbe im Längsschnitt, Fig. 3 im Querschnitt. Alle für die Construction unwesentlichen Theile sind weggelassen.1 to 3 of the accompanying drawings represent the machine for beautiful and Reprint with adjacent shapes. Figs. 1 and 2 show the same in longitudinal section, Fig. 3 in cross section. All parts insignificant for the construction are omitted.

Fig. 4 bis 6 geben eine schematische Darstellung von der Lage des Bogens zu den Formen während des Schöndrucks, des Wendens und des Wiederdrucks.Fig. 4 to 6 give a schematic representation of the position of the sheet to the Shapes during straight printing, turning and reprinting.

Fig. 7 zeigt die Ausführung des Bogens durch die Auswerffedern.Fig. 7 shows the execution of the bow by the ejector springs.

Der Druckcylinder C mit den beiden Greifersystemen g^l und g¹ ist stets mit der Zahnstange des Karrens im Eingriff und schwingt bei dem Hin- und Hergang desselben nach rechts und links um seine Achse. T¹ ist der Anlegetisch, von dem aus der Bogen durch eine Anlegevorrichtung oder durch die Hand des Arbeiters zugeführt wird. B¹ und ß² sind die beiden Biückenwalzen, über welche der bedruckte Bogen in die beiden Bänderleitungen läuft; von diesen führt L¹ zum Ausleger und U- zum Bogenwender und Anleger. Dieser besteht aus dem mit Längseinschnitten versehenen beweglichen Tisch T², den Walzen W und W² und der sie verbindenden Transportbänderleitung P, dem mit Quereinschnitten versehenen Tisch T³, der Transportschiene S und der Anlegewalze A. The printing cylinder C with the two gripper systems g ^l and g ¹ is always in engagement with the rack of the cart and swings to the right and left about its axis as it moves back and forth. T ¹ is the feed table from which the sheet is fed by a feeder or by the hand of the worker. B ¹ and ß ² are the two bridging rollers over which the printed sheet runs into the two ribbon lines; of these, L ^{1 leads} to the boom and U- to the sheet turner and feeder. This consists of the movable table T ² provided with longitudinal incisions, the rollers W and W ² and the conveyor belt line P connecting them, the table T ³ provided with transverse incisions, the transport rail S and the feed roller A.

In Fig. ι ist die Maschine in der Stellung gezeichnet, in der ein unbedruckter Bogen 3 den Greifern G¹ zugeführt wird, ein einseitig bedruckter Bogen 2 auf den oberen Tisch T³ durch die Transportschiene S an die Anlegewalze A transportirt ist'und ein zweiseitig bedruckter Bogen ι durch die Bänderleitung L¹ zum Ausleger läuft. Bei der Drehung des Druckcylinders in der Richtung des Pfeiles (Fig. 1) wird der Bogen 3 auf der ersten Seite von der Schön- und Wiederdruckform zugleich bedruckt und über die Brückenwalze jB² auf den Ausführungsbändern zur Marke m¹ geführt. Die Ueberführung des Bogens ge-In Fig. Ι the machine is drawn in the position in which an unprinted sheet 3 is ^{fed to the grippers G 1} , a sheet 2 printed on one side is ^{transported to the upper table T 3} by the transport rail S to the feed roller A and a two-sided printed sheet ι runs through the ribbon line L ¹ to the boom. When the printing cylinder is rotated in the direction of the arrow (FIG. 1), the sheet 3 is simultaneously printed on the first page by the perfecting and reprinting form and guided over the bridge roller jB ² on the execution tapes to the mark m ¹ . The transfer of the arch

Claims

takes place in the same way as with simple machines, which are provided with the device for printing without a top belt, and is represented by FIG. Next to the gripper bar there is a bar x ¹ x ² with several thin springs that lie under the paper when it is put on. If the beginning of the sheet then comes near the bridge rollers B ¹ and B ² after printing, these springs open with the opening grippers and guide the sheet into the ribbon line. In this the sheet runs until it hits ^{the mark m 1;} then the table T ² lifts it out of the belts, so that these can run backwards with the rotation of the cylinder now changing without taking the sheet with them. In the meantime, the transport rail S delivered the sheet 2 to the feed roller A and went back; this grabbed him, made half a turn and guided him to the grippers G ² , which grasp him when changing the stroke. The sheet 1 is meanwhile quietly in the belts L ¹ , since this and the bridge roller B ¹ are only moved in the direction of the arrow by a coupling. During this first printing period the cart moved from its outermost position on the left to the outermost position on the right and the pressure cylinder oscillated by more than 360 ° with the ratio of the pressure surface to the cylinder circumference assumed here. The position thus reached at the end of the slope is shown in FIG. 2.

If the cart now moves back and the cylinder moves in the direction of the arrow (FIG. 2), the table T ² presses the sheet 2 against the roller W ¹ , which moves the same upward by grippers or suction devices and upper belts and by means of the conveyor belts P. conveyed over the table T ³ to the mark m ^2.

This process is illustrated by FIG. 3. Meanwhile, sheet 2 was being ^{fed to printing by grippers G 2} and at the same time printed on its second side by the perfecting and reprinting form. In the further course of this printing period, the table Τ ^Ά rises and presses the sheet 2 against the transport rail S, which grasps it by grippers or suction devices and brings it to the feed roller A. The situation shown in FIG. 1 is hereby achieved again.

4 to 6 schematically explain the process of printing and turning a four-sided sheet, its sides with I, II, III and IV and the corresponding forms; with i, 2, 3 and 4 are designated. With the construction drawings compared, FIG. 4 corresponds to FIG. 1, FIG. 5 to FIG. 3 and FIG. 6 of Fig. 2. 1

ι and 4 are the. Straight printing, 2 and 3 the reprinting forms; the arrows . give the The direction the cart is moving.

Fig. 4 shows the form and paper as the first side of the sheet is printed. If now the sheet turned in the previously described and shown in Fig. 5 example ¹ shown schematically and is applied, of the cart of the pressure of the second page is done in the decline of the sheet according to scheme Fig. 6, and it is readily apparent to the recto printing DAF on the first (now upper) side of the sheet corresponds to a reprint on the second (now lower) and the reprint on the first corresponds to a face printing on the second side of the sheet.

Patent claim:

Cylinder press for Schön - ^; and reprinting with a swinging printing cylinder and two gripper systems G ¹ and G ² , in which the straight printing form is arranged next to the re-printing form, and the sheet placed on the gripper G ¹ and printed on one side when the cart is dropped by a sheet made of rollers W ¹ W ² In connection with grippers or suction cups and belts existing turning device is turned across to the machine (overturned) in order to be applied to the gripper G ² by an application device A and to be printed on the second side when the cart returns.

1 sheet of drawings.