DE1001289B - Device for setting up and checking rubber clichés on printing rollers of rotary printing machines - Google Patents

Description

GERMAN

There are devices for the registration of printing forms on their base for multicolor printing known in which the images of the register marks are projected onto the base and after The shapes are attached to these images. There is also a method for fitting printing forms for multi-colored work outside the printing press, which is done with printed tracing paper is working; according to the latter, the establishment takes place. There are also ruling, register and assembly tables for letterpress, flat and gravure printing, which enable marking or registering on printing plates. There are also devices for adjusting the working cylinders and those arranged on them Tools, for example printing plates, in sheet-fed printing machines and other machines, in which a dial provided with a scale is attached to the shaft of each working cylinder and outside of each working cylinder an adjusting rail provided with a scale and adjustable measuring tips is arranged, which leads with an adjustable stop on the adjusting disk and with a pointer of its stop on the scale, the adjusting disk slides. All of these devices and methods however, are based on the relatively easy set-up and checking of rubber clichés too expensive for the printing rollers of rotary presses.

The invention is therefore based on the object of a simple device on the rotary printing press to create, which enables the setting up and checking of the rubber clichés on the print roller.

According to the invention, this device consists of a transparent, on which the rubber cliché adjacent side (lower side) with lines and scales provided with ruler, which is above the with the Rubber cliché to be provided pressure roller up or down, forwards or backwards, shifted as well as rotated about its longitudinal axis and can be determined in its position and in its Working position is essentially tangential to the printing roller.

It is on the bottom, for example, with four spaced apart. each 1 centimeter running parallel Longitudinal lines and provided with a half-millimeter scale that is known per se. It rests on both sides in brackets on which it is preferably with the help of felt with the interposition of Screws is arranged. The central threaded bolts of its brackets can be swiveled and swiveled lockable levers can be established, for example with the help of wing nuts and lock nuts is feasible.

contraption

to set up and review

of rubber clichés on printing rollers

of rotary printing machines

Applicant:

Anton Lülf, Osterwick (Westphalia),
Village peasantry 44

Anton Lülf, Osterwick (Westphalia),
has been named as the inventor

These pivotable and lockable levers are on the frame of the rotary printing press, for example on the outside of its side cheeks, arranged and at the pivot point with the help of threaded nuts, which are provided with a handle, detectable. They have one at their free end Guide for the axes of the ruler brackets.

The drawing represents an embodiment of the inventive device for setting up and Checking rubber clichés schematically, namely shows

Fig. 1 a view from the front,
Fig. 2 is a side view,

Fig. 3 is a partial view of the ruler with the ruler underneath Cliché and

Fig. 4 shows a cross section through the ruler.
In the upper part of the side cheeks 1 of a rotary printing press, a pivotable and lockable lever 2 is arranged on each of the two outer sides. At its lower end it has a closed slot guide 3 for the axis of the holder 5 of the transparent ruler 6. The latter has four longitudinal lines 7 and a half-millimeter scale 8 on the underside at a distance of 1 centimeter each and is at both ends by means of screws 9 screwed onto the shoe-like brackets 5 with felt in between. On these threaded bolts 10 are arranged centrally, which grasp the pivotable and lockable lever 2 through the closed slot guides 3 and can be fixed in the desired position with the aid of wing nuts 11 and lock nuts 12. With the help of these various adjustment and locking

«09 767/18

The transparent ruler 6 can be used for setting up and checking the on the pressure roller 13 rubber clichés 14 to be glued on are placed in the most favorable position and held therein one sets the lever 2 by means of a threaded nut 15, which for easier operation is provided with a handle 16.

The application and mode of operation of the device according to the invention for setting up and checking of rubber clichés is as follows: First, the first cliché is placed on the printing roller 13. Then you bring the transparent ruler 6 by displacement and axial rotation in the guide 3 and by adjusting the lever 2 just above the rubber cliché in position and locks it. the Lines 7 and scales 8 on the underside of the ruler 6 are now so close above the cliché 14 that reading errors can no longer occur due to parallax. This is followed by setting up cliché 14, which one will expediently put so that distinctive features such. B. curves, one of the Touch the longitudinal lines 7 (see Fig. 3). The position of the cliché 14 is already in the direction of rotation Pressure roller 13 set properly. Notes for the alignment of the cliché 14 in the axial direction you look at the graduation marks in which the outer outline of the cliché 14 is the second Longitudinal line 7, which at the same time limits the scale upwards, intersects. In the case of Fig. 3, this is the case for 121.5 mm and 214.75 mm. If the first cliché 14 aligned in this way is now stuck on, then the other rubber clichés 14 required for multicolor printing can also be used in the same Position on the pressure roller 13 are glued, namely that its curves touch the uppermost longitudinal line 7 and lie in the second longitudinal line 7 between the points 121.5 mm and 214.75 mm.

However, the device according to the invention is not only for setting up rubber clichés on the Print roller suitable, but can also be used for checking rubber clichés by the latter under the grid of the transparent ruler formed by the longitudinal and dimension lines 6 and determines the dimensions, symmetry, etc. by measuring.

The effect of the invention is that it is now possible to use clichés for multicolor printing in a much shorter time with less effort and at lower cost than was previously possible.

Claims (3)

Patent claims: 1. Device for setting up and checking rubber clichés on printing rollers of rotary printing machines using one placed in holders outside the platen Scale, characterized in that it consists of a transparent, on the rubber cliché (14) adjacent side (underside) with lines (7) and scales (8) provided with ruler (6) consists, which is above the pressure roller (13) to be provided with the rubber cliché (14) upwards or downwards, forwards or backwards and rotatable about its longitudinal axis and can be determined in its position. 2. Device according to claim 1, characterized in that that with the interposition of felt on the two-sided, provided with central threaded bolts (10) as well as by means of wing nuts (11) and lock nuts (12) on the levers (2) fixable brackets (5) with the help of screws (9) arranged ruler (6) on the underside with four at a distance of one centimeter each running parallel longitudinal lines (7) and with a half-millimeter scale known per se (8) is provided. 3. Apparatus according to claim 1 and 2, characterized in that the pivotable and lockable Lever (2) arranged in its pivot point on the frame of the printing machine and with The help of threaded nuts (15) which have a handle (16) can be determined and that they are on have a guide (3) for the axes (10) of the ruler mounts at their free end. Documents considered: German Patent No. 627 485. 1 sheet of drawings © 609 767/18 1.57