DE126844C

DE126844C -

Info

Publication number: DE126844C
Application number: DENDAT126844D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

■- Λ! 126844 -KLASSE 15rl.■ - Λ! 126844 CLASS 15rl.

Patentirt im Deutschen Reiche vom 26. Juli 1899 ab.Patented in the German Empire on July 26th, 1899.

Die im Nachstehenden beschriebene Erfindung bezieht sich auf eine Plattenhalte- und Spannvorrichtung, besonders für Druckpressen, bei denen biegsame Platten aus Zink oder Aluminium zur Anwendung kommen. Die Plattenhaltevorrichtung zeichnet sich bekannten gegenüber durch groise Einfachheit in der Einrichtung und gute Wirkungsweise aus. Sie nimmt infolge ihrer besonderen baulichen Anordnung nur sehr wenig Raum ein, so dafs die zur Aufnahme der Vorrichtung an der Cylinderoberfläche vorzusehenden Oeffnungen sehr schmal sein können, wodurch es ermöglicht wird, dafs, falls nur eine Platte auf dem Cylinder gelagert wird, die Ränder der Platte dicht neben einander befestigt werden können, so dafs fast die ganze Oberfläche des Cylinders von der Platte bedeckt wird. Bei Verwendung mehrerer Platten geht gleichfalls, im Gegensatz zu den bisher bekannten Vorrichtungen dieser Art, nur sehr wenig Raum durch die Oeffnungen verloren, so dafs ein gröfserer Thcil der Cylinderoberfläche als bei den alten Vorrichtungen zur Aufnahme der Platten nutzbar gemacht wird.The invention described below relates to a disk holder and Clamping device, especially for printing presses that use flexible zinc plates or aluminum are used. The plate holding device is known on the other hand through great simplicity in the facility and good effectiveness. Due to its special structural arrangement, it takes up very little space, so that the openings to be provided for receiving the device on the cylinder surface can be very narrow, which makes it possible that, if only one plate on the Cylinder is stored, the edges of the plate can be fastened close to each other, so that almost the whole surface of the cylinder is covered by the plate. Using multiple plates is also possible, in contrast to the previously known devices of this kind, very little space is lost through the openings, so that a larger one Thcil of the cylinder surface than the old ones Devices for receiving the plates is made usable.

Auf der Zeichnung ist der Erfindungsgegenstand in einem Ausführungsbeispiel dargestellt. The subject of the invention is shown in an exemplary embodiment in the drawing.

In den Figuren bezeichnet D die die Platte, führende Unterstützung, welche in dieser Ausführungsform ein Cylinder ist. Der Cylinder besitzt eine plattentragende Oberfläche und kann auch in manchen Fällen mit einer Anzahl solcher Flächen versehen sein. 5" bezeichnet eine Aluminium-, Zink- oder andere biegsame Druckplatte, die auf der Unterstützungsfläche ruht und vermittelst der zu beschreibenden Vorrichtung ausgespannt und gehalten wird.In the figures, D denotes the support guiding the plate, which in this embodiment is a cylinder. The cylinder has a plate-bearing surface and in some cases can also be provided with a number of such surfaces. 5 "denotes an aluminum, zinc or other flexible pressure plate which rests on the support surface and is stretched and held by means of the device to be described.

Der die Form oder Platte führende Cylinder ist mit zwei Stangen 10, 11 versehen, welche von einer Seite zur anderen durch ihn hindurchgehen. Auf diesen Stangen ist eine Anzahl Hülsen 12 angeordnet, die mit nach auswärts vorspringenden kurzen Armen 13, deren oberes Ende die gekrümmte Oberfläche 14 besitzt, versehen sind. An diesen Armen 13 sind vermittelst Bolzen 15 oder in sonst passender Weise eine Anzahl von Klauenplatten 16 befestigt, deren oberes überragendes Ende zur die Platte haltenden Klaue 17 ausgebildet ist. Die Klauen, welche mit dieser zusammenwirken, können verschiedene Formen haben und auch in verschiedener Weise gehalten werden. The cylinder guiding the form or plate is provided with two rods 10, 11, which go through it from side to side. On these poles are a number Sleeves 12 arranged with outwardly projecting short arms 13 whose upper end has the curved surface 14, are provided. There are 13 on these arms fastened by means of bolts 15 or a number of claw plates 16 in some other suitable manner, the upper protruding end of which is formed toward the plate holding claw 17. The claws that interact with this can have different shapes and also be held in various ways.

In dem dargestellten Beispiel ist die Klauenplatte 16 nächst ihrem oberen Ende mit den Durchbohrungen 18 versehen, durch welche die Zapfen oder Bolzen 19 hindurchgehen. Das innere Ende dieser Zapfen oder Bolzen trägt die Klaue 20, die mit der Klaue 17 zusammenwirkt, um die Platte festzuhalten. Die Durchbohrungen 18 müssen so grofs sein, dafs sie der Klaue 20 die nöthige Bewegung von der Klaue 17 fort und die Einführung der Platte 5 zwischen beide Klauen und darauf wieder die Hinbewegung zur Klaue 17 gestatten, damit die Platte zwischen beiden Klauen festgeklemmt werden kann.In the example shown, the claw plate 16 is next to its upper end with the Provided through bores 18 through which the pins or bolts 19 pass. The inner end of these pins or bolts carries the claw 20, which cooperates with the claw 17, to hold the plate in place. The holes 18 must be so large that that it removes the necessary movement of the claw 20 from the claw 17 and the introduction allow the plate 5 between both claws and then again to move towards the claw 17, so that the plate can be clamped between the two claws.

Um die untere Klaue 20 gegen die mitwirkende zu pressen, damit die Platte 5" gut zwischen beiden festgehalten wird, können verschiedene Vorrichtungen vorgesehen werden.To press the lower claw 20 against the cooperating, so that the plate 5 "well between two different devices can be provided.

Im vorliegenden Falle ist die Anordnung derart getroffen, dafs die Klaue 20 leicht gekrümmt ist, und zwischen dieser gekrümmten Fläche und derjenigen 14 des Armes 13 ist einIn the present case, the arrangement is such that the claw 20 is slightly curved is, and between this curved surface and that 14 of the arm 13 is a

Claims

oscillating block 22 arranged, which also has curved or rounded ends. This block is connected to the plate by means of a bolt 23 which is provided with the wing nut 24. It can be seen that the block 22 is moved towards the claw plate 16 in a certain direction by turning the wing screw. The block has a wedge-like effect. It should be noted that the pawl 20 moves substantially in a straight line upward under the action of the swinging block. As a result, while the clamping is effected, the pawl will not slide on the plate. In order to move the oscillating block 22 away from the plate 16 so that the claws 17 and 20 are separated and the pressure plate 5 "is released, the springs 25 are provided, which can be arranged in any way, but they can also be replaced by other, In the present embodiment, each bolt 23 is surrounded by a spring, the plate 16 and the oscillating block 22 being recessed to receive the ends of the springs is held, it is necessary to move the latter away from the edge of the surface of the cylinder D carrying the printing plate in order to spread the plate smoothly and evenly in its position on the cylinder surface. This purpose can be achieved in various ways. In the arrangement shown in the drawing acts a equipped with a lock nut 27, through a through hole in the vibrating block 22 through Hender screw bolt 26 in connection with the screw threads having holes of the plate 16 against the edge of the cylinder surface supporting the plate. . The plate carrier must be designed so that it allows the use of a claw seat at each end, in which case the rods 10 and 11 are provided with long sleeves 12. The claws 20 and 17 are made long enough to ensure that the panel edges are held in place. A good embodiment is the one shown, in which the rods 10 and 11 each carry a number of sleeves, each row of claws being adjustable independently of the other. If, however, certain parts of the plate require greater tension than others, this can be achieved by adjusting the particular claw seat, which then acts on this part of the plate independently of another claw. In the embodiment shown, the plate is held on both sides by one of the claw arrangements described; however, this is not necessary, but the plate edge can also be fastened on one side in any other suitable manner. It can be seen that such a holding device can be used not only when plates are to be clamped on a cylinder, but also when the tension is on a flat body, e.g. B. on a reciprocating bed, as it is used in printing machines, or the like. To happen. The application is by no means restricted to printing presses, but can be used in any other case where tensioning of plates or the like is required for a similar purpose. Godfather ν T-A ν Proverbs:

1. Plate holding and clamping device on forme cylinders of printing presses, in which the plate edge of arranged on a shaft, with respect to the cylinder edge adjustable claws, characterized in that each plate holder consists of an upper and a The lower claw consists of the latter by a device independent of the claws is shifted in a straight line against the former in such a way that it causes the plate edge to be clamped.

2. An embodiment of the device according to claim 1, characterized in that that there are a number of independently acting claw seats from those each on sleeves (12) provided with arms (13), which are on one in the cylinder mounted shaft (10) are attached, and a solid, attached to their upper end to the claw grip (17) formed, connected to the Hülsenann Claw plate (16) and a movable claw (20), which the latter to a bolt (19) loosely arranged in the claw sits and through the wedge-like Effect of a between her and the rounded end of the sleeve arm (13) seated block (22) is moved upwards against the upper claw handle, wherein the Klotz, pressed off the claw plate by a spring, mediates one through going through the claw plate, with

. a wing screw (24) provided bolt (23) is moved.

1 sheet of drawings.