DE875186C - Roller printing machine for fabric and other webs - Google Patents

Description

The invention relates to a roller printing machine for tissue - "- and "other webs in which the web to be printed is directly on top of the Impression roller rests on the running blanket and the blanket itself during its Circuit is continuously cleaned by the machine.

In the known machines of this type, the cleaning takes place, the printing blanket preferably by means of rotating brushes. through which the pressure blanket is heavily stressed will.

According to the invention, the cleaning device consists of one and her moving, dragging on the printing blanket and constantly with solvent sprayed fabric strips as well as one or more wipers attached to the Remove any dissolved ink adhering to the printing blanket.

This training has compared to the known cleaning devices the advantage - that the printing blanket is cleaned immediately. Furthermore, there will be no Cleaning brushes or rollers used so-that the printing blanket through the cleaning device mechanically chewing is stressed. Because of the constantly sprayed strip of fabric the ink adhering to the printing blanket is transformed into a solution or thin paste, which can easily be removed by the scraper. Furthermore, the whole device Very easy to assemble and takes up little space.

In the drawing, a Ausfüuhrungs @ example of the invention is schematic shown.

The impression roller of the printing machine is denoted by i. 9 is the pressure roller and 7 the feed roller; which dips into the paint trough 8. The one presented as Docke 4 CGeewebebahn is first guided over some tension bars and over the pressure roller 6, then goes around the impression roller -i and leaves it via a roller 29 in the direction to the dry mansard. The endless printing blanket 2 is also under the pressure roller 6 is fed to the impression roller and then moves over the guide roller 30, the reversing roller 2o and some guide rollers 2i to the tensioning device 22, from which. them through the drying device io is guided back to the printing press.

According to the invention is above the reversing roller 2o on a crossbeam 23 a fabric strip 24 is attached, which rests against the roller 2o. parallel to -A spray tube 25 is arranged on this fabric strip 24, through which the fabric strip the cleaning liquid is supplied. Furthermore, on the underside of the reversing roller 2o a scraper 26 is arranged, which removes the "dissolved ink" adhering to the printing blanket removed; further scrapers 16, which are to remove the residues of the liquid, are arranged between Aden Leitwalzenai. All of the wipers 26 and 16 are adjustable as required. The whole cleaning device is in a protective box 28 housed. .

Claims (3)

PATENT CLAIMS-i. Roller printing machine for fabric and other webs, in which the web to be printed is directly on the over: the impression roller Pressure blanket rests on and the pressure blanket itself during its cycle through the Machine is cleaned continuously, characterized in that the cleaning device from a back and forth moving, dragging on the pressure blanket and constantly with Tissue strips (24) sprayed with solvent liquid and one or more There are wipers (26) that remove the dissolved ink adhering to the printing blanket. 2. Roller printing machine according to claim i, characterized in that the back and forth movable fabric strips (24) and a liquid supply device (25) over .the reversing roller (2o) of the printing blanket, the scraper (s) (26) against it are arranged below the reversing roller (2o). 3. Roller printing machine according to claim i, marked @; that the endless blanket on the side on which the web to be printed comes to rest, has a pore-free, smooth surface. Cited publications: German patents No. 225 097, r92 985, 11 5t2; French Patent No. 892 8 [i.