DE466928C - Device for cutting endless paper or fabric webs in one operation with a roller printing machine or other preparation machine for sheets of any length - Google Patents

Description

Bur. Ind. Own thorn
5 0 ffOK 1828

ISSUED ON
OCTOBER 15, 1928

The invention relates to roller printing, dyeing, stamping machines and the like Processing machine for endless paper or other material webs, namely those machines in which quick-drying inks are used.

With these processing machines, which are used for the production of paper napkins, metal foils, Colored papers of all kinds, adhesive papers for ίο cardboard purposes and the like those edited, z. B. printed webs in sheets or sheets for the commercial Sales have to be cut up, the difficulty since then has been.

that there is no mechanical device

• was the one with which the printed web could be made into any sheet in the same operation Length "could, especially not in those sheets that preprinted with a Patterns matched. One helped oneself by first rolling the train rolled them up and then cut them into the desired shape on special cross-cutting machines Formats, with the exact cutting

ί which still caused considerable difficulties after the print sample. There are min in the large rotary printing presses used in the book and newspaper industry, sheet cutting devices known that cut in accordance with the pressure in register. These devices but are too involved and expensive for the purposes at hand; aside from that collect these devices by piercing the beginning of the sheet several sheets on a collecting cylinder., which also in which this invention is based on the purposes of use cannot be considered.

The object and purpose of the invention is therefore the endless machined To cut the web into sheets in the same operation with the printing machine, that these coincide in their length with the printed patterns, or that one goes through Changing the cutting speed can also produce sheets of greater or lesser length can when cutting according to a print pattern is out of the question. Another object of the invention is the processed, for example printed, web to be cut at the moment of cutting to keep it under tension and the cut bow immediately a leading movement to give compared to the working speed of the processing machine, whereby when conveying further gaps arise between the individual sheets, so that these the collecting container or a flat-ball dryer can be fed individually. Because the surface of the web is still too damp even with quick-drying paints

Claims (2)

is to be "touched" by mechanical means of some kind, so is the invention relying only on the lower side of the web to achieve the desired The purpose of acting without piercing the individual arches or to Purpose of dropping on a roller to collect. The innovation is on the drawing in ίο an embodiment on a roller printing machine shown. The frame ι the roller printing machine carries the printing cylinder 2 around which the pattern rollers 3 and 4 are arranged. The endless path running off the roller 5 is known Way over the guide roller 6, around the impression cylinder 2 and is printed with as many colors as pattern rollers 3, 4, etc. available. As soon as the printed web leaves the impression cylinder 2, it comes on the pneumatic pulling table 7 of a known type, whose felt cloth 8 has the same peripheral speed like the impression cylinder has 2.! By the pulling table 7 by the one Exhaustor generated vacuum the printed web on the driven felt cloth S in sucks itself in a known manner, it conveys the web to the also known cutting device 9, 10. This is set in rotation that intermediate gears 11, 12, 13 drive the gear 14, which is fixed on the shaft of the cutting counter roller 10, which in the exemplary embodiment has the same pitch circle diameter as the gears of Pattern rollers 3, 4. This is the angular velocity of the counter roller 10 is exactly the same as that of the pattern rollers 3 and 4. By now, in a known manner, the counter-j wake 10 its peripheral speed to the j Cutting roller 9 transmits through gears not shown in the drawing, the must Cutting roller 9 cut the web into sheets, the length of which corresponds to the circumference of the pattern rolls 3, 4 corresponds. Arc lengths deviating from this can be achieved by reducing the size or. Enlarging the gear 14 and the like Adjustment of the intermediate wheels 12, 13. This cutting of the web into sheets but is only possible because a second pneumatic pulling table 15 is also accelerated driven running sheet 16 pulls the web between the cutting rollers 9, 10 taut. | This pull table 15 is just like the pull | table 7 through the suction pipes 17, 18, 19 with a vacuum source not shown in the drawing, such as an exhaustor, in connection. The rapidly leading speed of the running sheet 16 is also achieves that the bow forrows accelerated immediately after the cut, and that between two The individual cut sheet gaps are created, which the further guidance make this arch to the collecting box 20 possible. So that the cut sheets are continued at the speed which has the running cloth 16, endless conveyor belts 21 are provided over the running cloth 16 are stretched and receive their rotational speed from this. The back-up roll 22 indicates the running direction of the belts 2 r, while the adjustable tension roller 23 keeps them in tension. Tongues 24 between the conveyor belts 21 in incisions of the Engaging the tension roller 23 enables the sheets to slide into the collecting box 20 or on the running cloth of a. Flat sheet rock ners : PA ¹ L ¹ IS MT Λ NSI ¹ K Ü C11 Ιϊ: ι. Device for cutting endless paper or fabric webs in one Operations with a roller printing or other processing machine to sheet Any length, characterized in that the web to be cut without its surface is touched by two pneumatic ones acting on its back Pulling tables (7, 15) between the cutting rollers (9, 10) are thereby drawn in a straight line is that the second pulling table (15) one has a higher peripheral speed than the first, and that endless conveyor belts run over the second pulling table (15), which the sheets with the circulation speed of the second ι η train table a collecting container (20) or a flat belt dryer. 2. Apparatus according to claim 1, characterized characterized in that by the greater 'ioo ßere peripheral speed of the second pneumatic pulling table (15) a tearing of the by the cutting device (9, 10) cut places and at the same time gaps between the individual running arcs arise. 1 sheet of drawings