These machines have straight blades (04) e (05) (Fig. 1), circular blades or blades with other forms, such as the saber blade, that make the separation of the strip, from the original format. They have also a stop (03) that can be placed at a distance determined in relation to the position where the strip will be cut, normally the blades position.

To start the cutting operation there is an order for the blades to perform the strip separation. Normally, for reasons of limitation of t : he, forces and energy necessary to the cutting operation, the cut is (06), i. e. , after the cut has been started at a point that evolves along the format causing the continued separations of the strip (07).

The strip, partially due to the cutting operation and partially due its own weight, lowers the position in relation to the plane where the cut is started. This progressive descent causes deflections in the shape of a bow.

Also during the cut the connection of the strip to cut with the starting format is made progressively in a increasingly shorter area (08) until, at the end of cut, the area remains so much reduced that the strip weight causes permanent and great deflection in that area of the strip, which is know as fold (wrinkle).

The present innovation intends specially to add the following devices to the shearing machine: - Compulsory fitting of a gauge stopping bar/beam (03) (Fig. 1,2, 3 and 4) with position variable in relation to the cutting line; Integration of an innovative system of pins with movable position (01) and (02) (Fig.

4) along the gauge stopping bar/beam mentioned before and that are meant to make the support on the bottom surface of the area of the cut-off strip close to the gauge stopping bar/beam ; - Combination or not of the two systems mentioned before with sheet support device on the bottom part to ease on the leaning of the thin plate against the stop, when the plate is pushed against the stop.

According to the present invention the above mentioned phenomena of permanent deflection on the cut-off strips (bow and fold/wrinkle) can be minimized or eliminated as follows : - The pins are controlled to be projected from the gauge stopping bar/beam before the plate comes in contact with the gauge stopping bar/beam (01) e (02) (Fig. 3) ; - Once the plate is fed, this lays supported on the pins before the operation begins (Fig-3) ; - When the progressive cuts starts, there is a part of the cut-of strip that remains always supported on the pins, thus preventing its deflection due to its own weight (Fig. 5) ; - Once the cut is finished, the pins are ordered to retract, disappearing from the projected position of the gauge stopping bar/beam and allowing for the fall of the cut-off strip in order for it to be removed from the machine (Fig. 6).

In order to better understand the present invention below there is a description of how this is done: Fig. 2: Side view of a plate intended to be cut on a shearing machine against a gauge stopping bar/beam (03).

Fig, 3 : Side view of the projecting pins (01) and (02) the gauge stopping bar/beam (03) underneath the plate.

Fig. 4 : Expanded view in perspective showing an example of a gauge stopping bar/beam (03) with the pins distributed along the gauge stopping bar/beam (01) and (02) length.

Fig. 5: Intermediate cutting position in which the effect of the plate support done by the mentioned pins is seen.

Fig. 6. Position showing the retracted pins and the fall of the cut-off strip for its removal from the machine.

Fig. 7: Equivalent to Fig : 2 but with the additional supporte (09) for the plate on the bottom position.

Fig. 8: Equivalent to Fig. 3 but with the additional support (09) for the plate at the top position.

Fig. 9 : Equivalent to Fig. 3 and 8 but with the support (09) already swinging down for the lower position.

Fig. 10 : Equivalent to Fig. 5 but with the support (09) already swinging down for the bottom position to prevent collision with the cut-off strip during the cut.

Fig. ll : Equivalent to Fig. 6 in which the support (09) can accumulate the function of chute.