PROCEDURE AND PLANT FOR CUTTING FLAT MATERIAL.

The available invention concerns a procedure in accordance with generic term of the requirement 1 as well as a plant for the execution of the procedure. With conventional procedures and/or plants for cutting parts from flat material, sheet-steel plates, the flat material in horizontal situation on a rust by carrying ribs put over which a cutter head CNC steered in Längsund transverse direction arranged is. Here problems result, if a cut is in ranges of a carrying rib to be led, by the material cleared away at the interface withdraw not freely downward, are locally damaged the carrying rib or the laser beam at the carrying rib are reflected and the back of the flat material damage can.

A goal of the invention is it to avoid with a procedure of the kind initially specified these disadvantages as the flat material in approximately perpendicular situation is cut. If the flat material is perpendicular or only easily bent hung up, it does not require support of the same at the back, without the flat material under the very small forces working transverse to its level deforms in such a manner that at working accuracy one loses. A further advantage is the disposal of the low-cut parts/wastes already during the treatment. The collision danger of the cutter head on the support east lying tilted will also divide eliminated.

The invention concerns also a plant for the execution of the procedure specified above in accordance with requirement 5. a special advantage of this plant exists in the fact that free-cut parts are constantly removed, which simplifies and shortens the treatment.

It is well-known to anyway cut or work on in perpendicular situation material held thermally in perpendicular situation inserted material thermally (US-A-3,484,104 and 4.383.168), but was lively thereby not the standard production of parts by thermal cutting the same out of approximately flat material perpendicularly held.

The invention is more near described now on the basis a Stirnansicht of a cutting machine according to invention represented schematically in the design.

The machine rack exhibits a basis 1 lateral Tragkontruktionen 2 and 3, as well as an upper carrier 4. On the vertical carrying construction 2 a gumption bridge 7 is in longitudinal direction, i.e. perpendicularly to the layer, adjustable by means of two guidance 5 and 6. The adjustment can take place by means of a spindle 8 and a numerically steered, not represented engine. The gumption bridge 7 is easily bent for example around 3° in relation to Senkrechten. Along the gumption bridge 7 a carriage 9 adjustable by means of an engine 10 and a not represented spindle is. At the carriage 9 a cutter head 11, for example a laser cutter head, is adjustably attached. The Spindelantriebe can be replaced also by others ev. better suitable drives.

At the carrier 4 a longitudinal guidance 12 is fastened, along which a grip arm 13 with grab cheeks 14 is led. In longitudinal direction of the guidance 12 several such grip arms can be arranged, which with their grab cheeks 14 the top margin of a flat material plate 15, for example a sheet-steel plate to hold. The lower edge of the plate 15 preferably rests against a supporting border or a guidance opposite 16, in such a manner that the plate 15 is easily bent Senkrechten, around the same amount as the gumption bridge 7.

Below the guidance 16 a conveyor 17 is arranged, which can serve for it from the plate 15 free-cut parts or wastes in longitudinal direction from the working capacity to exhaust.

On the senkrechten carrying construction 3 by means of two guidance a bridge 20 is lengthwise-adjustably led 18 and 19. It can be adjusted by means of a spindle 21 and a not represented engine in longitudinal direction. Along the bridge 20 a carriage 22 adjustable by means of an engine 23 is. At the carriage 22 a discharge grip arm 24 is attached, which is equipped e.g. with suction cups 25. It is accepted that the grip arm head 24 at its carrier 26 is tiltable arranged, in order to be able to adapt to the inclination of the plate 15. The grip arm 24, 25 serves for it, free-cut parts abzutransportieren.

The function of the represented plant results to a large extent from the managing description. By means of carrying grip arms flat material plates can be brought to 13 along the guidance 12, which can be designed as bed, from a camp into the represented working on position in motion travel of the cutter head 11 and/or the grip arm 24. The storage and the Antransport of the plates 15 are here particularly simple and space-saving, because the plates in perpendicular position can be stored and transported. By means of the cutter head 11 into actually well-known way parts from the plate 15 is free-cut, whereby the correct distance of the cutter head 11, in particular laser head 11 by the plate 15 is regulated constantly automatically. In the design interfaces 27 are suggested. It is evident that these interfaces are outside of any supporting organs at the back of the plate 15, so that the cutting process is handicapped in no way. Before a part of 28 is completely free-cut, the grip arm 24 is put on and festgesaugt against the part, so that the part can be moved away after that free cuts. It is clear that the grip arm has 24 certain dimensions, so that very small parts cannot be seized and moved away with this grip arm. Small parts can one however generally without disadvantage after that free cuts on the conveyor 17 fall let, of which they are removed. The small inclination of the plate 15 leads to the fact that the parts in certain direction, concerning the cutter head 11 fail to the rear, and arrive at the conveyor 17. After cutting all parts out the remainder lattice of the plate 15 by means of the grip arms 13 and/or the conveyor chain with the grip arms 13 from the working capacity can be removed and it can a new plate into the working capacity be brought at the same time.

Different execution variants are possible. For certain purposes no grip arm needs to be present 24. The bridge 20 could be likewise bent and stand parallel to the bridge 7 and/or to the plate 15. Regarding the small inclination of the plate 15 in addition, the gumption bridge 7 could stand perpendicularly, dader distance of the cutter head 11 by the plate 15 is regulated anyway automatically. The fact that the plate 15 at the back is freely accessible, could be used also in order to adjust on the back the cutter head 11 a suction apparatus, which directly exhausts the flue gases and particles developing when cutting. In addition, it could be connected with the grip arm 24 an exhaust hood, which is so dimensioned that it is able to catch and suck the flue gases off and particles developing when cutting and shield light depressing at the same time. The flat material can be kept free also in perpendicular situation, hanging or above and led, cut down. Instead of, one let and by means of the same remove could exhaust a remainder lattice by means of or the grip arm the 13 it also on the conveyor 17 fall. A steel plate could be hung up also at magnets, and/or a sufficient rigid plate could be supported only down on a guidance, in which cases cuts to practical can be led to the disk edge. Similarly like the grip arm 24 also the cutter head 11 or the gumption bridge 7 could be adjustable in the inclination.