DE2637661A1 - DEVICE FOR CLAMPING FLEXIBLE PRESSURE PLATES ON A SADDLE PLATE - Google Patents

Description

DR.BERG DtPL.-lNG. STaPF 263/661

DIPL.-IMG. f CHWABE ΠΠ. DR. SANDMAIR

PATENT LAWYERS
8 MOHCHEH »0 - MAUERMRCHERSTR. 45

20 AUG. 1976

LEGAL FILES 2739ο

Maschinenfabrik WIi ¹ AG, Bern

Device for clamping flexible pressure plates on a fifth wheel.

The invention relates to a device for clamping flexible Pressure plates on a saddle plate, the leading end of the pressure plate being fixedly hung on the saddle plate and the trailing printing plate end is detected by a spring-loaded tensioning device, which is operated by a hand tool is tensionable.

There are several devices for clamping flexible printing plates known on a fifth wheel.

The German Auslegeschrift 22 07 138, for example, shows such Device in which the tensioning force is generated by a torsion spring which is attached to one side of the saddle plate stationarily attached bracket and at the other end on a tubular shaft is fixed non-rotatably.

This design has the disadvantage that the tubular shaft itself is subject to a certain torsion, which is why the pressure plate is not evenly stretched across the entire width.

Another embodiment is the German patent specification 1 561 013 known, in which the pressure plates are tensioned with toggle systems housed in the saddle plate.

This design is cumbersome because (each knee lever syst em individually must be tensioned and released.

709815/0719

With the same disadvantages are those caused by the Germans Offenlegungsschriften 1 928 072 and 2 148 800 which have become known Versions tainted, since each bracket has to be clamped and loosened individually.

The object of the invention is to create a device which allows flexible pressure plates made of metal or plastic to be clamped quickly and reliably in just a few simple steps, whereby the necessary clamping force is generated by spring elements that are assigned to the clamping hook, causing a rotation of the Expansion shaft is excluded.

The object is achieved according to the invention in that for hanging of the leading end of the printing plate bent at an acute angle, at least two opposing hooks are arranged which form the end of the printing plate Hold immovably while a tension shaft is mounted in bearings to grasp the trailing end of the printing plate and supported in the prism-shaped end of the saddle plate and is equipped with at least two clamping hooks, which clamping bolts are assigned, which are tensioned by a corresponding number of torsion springs that are incorporated into the saddle plate Bags are housed.

Exemplary embodiments of the invention are shown in the drawing. Show it:

1 shows a cross section through the clamping device; FIG. 2 shows a view of the clamping device 3 shows a cross section through the clamping device in another embodiment.

The pressure plate 2 is placed on the saddle plate 1 in such a way that that the leading end of the pressure plate, bent at an acute angle 3 is guided over the counter hook 4, in which it as a result the bending stress is immovable when the pressure plate 2 is applied *

With a hand tool 5, the tensioning shaft 8, which is mounted in bearings 6 and supported in the prism-shaped end 7 of the saddle plate 1, is tensioned. For this purpose, the ends of the expansion shaft are provided with hexagon sockets 9 _? in which the hand tool 5 can be inserted. The clamping shaft 8 is provided on the one hand with precisely aligned clamping hooks 10 and on the other hand with clamping bolts 11. Torsion springs 13 are inserted into pockets 12 that are incorporated into the saddle plate 1 and are designed in such a way that their active part presses on the clamping bolts 11. By turning the tensioning shaft 8 by means of the hand tool 5 against the spring force, it is possible to effortlessly hang the trailing end 14 of the pressure plate 2 into the clamping hook 10, with the pressure plate 2 being evenly tensioned by the spring forces after the hand tool 5 is released.

The torsion springs 13 can also be designed so that they directly in grooves that are worked into the expansion shaft 8, attack.

Instead of the torsion springs 13, it is possible to use rubber or plastic cushions 15 to be used.

The embodiment according to FIG. 3 also enables printing plates to be stretched with flat leading pressure plate ends 16 by hooking into the correspondingly designed saddle plate 1 can be used. However, this design requires a wider, non-printable area on the printed product.

709816/0 719

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Claims (4)

^ - 1.J Device for clamping flexible printing plates on "« Ine saddle plate, the leading end of the pressure plate being stationary is hung on the saddle plate and the trailing end of the pressure plate is attached to a clamping device under leather load is detected, which can be tensioned by a hand tool, characterized in that for Attaching the leading pressure plate end (3) bent at an acute angle, at least two counter hooks (4) are arranged, which Hold the end of the pressure plate (3) immovably while a tensioning shaft (8) is used to grasp the trailing end of the pressure plate (14). stored in bearings (6) and in the prism-shaped end (7) of the saddle plate (L) is supported and equipped with at least two clamping hooks (10) to which clamping bolts (11) are assigned, which through a corresponding number of torsion springs (13) are tensioned, which are housed in pockets (12) incorporated in the saddle plate (1) are. 2. Device according to claim 1, characterized in that the torsion springs (13) directly in grooves with which the tensioning shaft (8) instead of the clamping bolt (11), attack. 3. Device according to claim 1, characterized in that rubber or plastic cushions (15) are arranged to exert the clamping force are. 4. Device according to claims 1 to 3, characterized in that that at least two fixed hooks (17) are arranged for hanging in flat leading printing plate ends (16). MASOHINENPABRIK WIi ¹ AG 709 815/0719 originally inspected