FI64302B - OVER ANCHORING FOER STAPLING AV DELAR AV VALSADE STOLBAND - Google Patents

Description

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Federal Republic of Germany-Förburdcrepubiiken

Tyukland (DE) P 2830037.6 CTi) Sundwiger Eisenhiitte Macchinenfabrik Gran & Co., Postfach T '<0, Ρ-ρδγο Hemer, Federal Republic of Germany-förbundsrepubliken Tyt: kiand ()) F) (72) Friedrich Muller, Hemer, Federal Republic of Germany Förbundsrepubliken Ty skiand (DE) (7k) Oy Kolster Ab (54) Method and apparatus for stacking rolled strip steel parts - Förfarande och anordning för stapling av delar av valsade stälband

In the case of equipment for handling rims, larger parts have to be cut very often, especially at the beginning and end of the material web, and this should also be possible to do so simply and quickly. In the case of stainless steel and also embossed metals, for example in a reverse duct rolling mill, the unrolled end is usually cut from the rolled strip and welded to the rolled strip, so that it can be reused. The length of such reused material heads is about 4-10 m.

In order to save time, such long pieces of material are usually removed from the web in one piece and stacked, for example, in sections 4-19 τ in length as the respective treatments next to the tea. In already known devices, a long roller track is then arranged behind the cutter, on which the cut parts are pushed and from which they are then transferred by a special crane 11a in a transverse direction to the stack to be formed next to the handling device in question.

However, a disadvantage in this connection is that the length of the roller track must correspond to the maximum length of the strip, so the space requirement is therefore quite large. This can also cause handling difficulties at the end of the strip, because the strip no longer has tensile stress due to its length. Another disadvantage that increases working time is the situation when only shorter parts of the tape track have to be cut, or when dealing with tapes from which nothing is cut. In all these cases, more time is needed to place the tape in question. to the device.

The object of the present invention is to develop such a method and the device used for its application that it is possible to stack long sections cut from the strip efficiently next to the processing device in question, both in terms of space requirements and use of time.

According to the invention, this is achieved by bending a part of the strip web into a ring, after which the ring is conveyed from the web of material in the transverse direction to the stacking point, again bent straight and placed in the stack. A significant advantage of this method is that only a small part of the length of the respective processing device is required for the part of the strip bent into a ring. In addition, the parts can be stacked in a small space in the space in question, since the ring is straightened as soon as it has been moved out of the processing device.

The device for applying the method according to the invention is a machine with bending rollers for bending the strip into a ring and likewise bending rollers for straightening the ring. The machine then moves in a transverse direction with respect to the material path between two different positions, i.e. behind the cutter in front of the stacking point. Tape bending machines operating according to the general principle of a bending machine, in which the bending of the strip takes place in a three-roll bending unit, belong to the prior art (see "Herstellung von kaitgewalztem Band" f. Production of cold-rolled strip 16), Verlag Stahl-Eisen Diiss ). In order to be able to open the strip ring straight next to the handling device and in front of the stacking point, the bending machine required by the invention is also provided with, for example, a straightening unit comprising three rollers. For this, only one more bending roll is needed, since the other two bending rollers can be used both for bending the strip into a ring and also for straightening the ring.

3 64302

According to another structure of the invention, the machine comprising the bending rollers pivots in its own axis, so that the space arrangements of the stacking location can be chosen more freely in relation to the processing device.

In particular, a structure is recommended in which the bending machine has a measuring boom associated with the material path in front of the externally arranged straightening roller, e.g. a light boom, which gives the bending machine drive a stop signal from the end of the cut strip. In this case, firstly, the light barrier prevents the rear end of the strip from moving too far when the long end is bent into a ring. The bending step then ends before the rear long end has reached the outside of the straightening roller. Thus, no special threading step is required when unloading the tire for the 1st straightening. The measuring boom also has the function of stopping the bending machine after the execution step. For automatic operation of the belt handling device, the stop signal can also be used to start transverse transport from the material web to the position in front of the stacking point immediately after the stop signal is given.

A significant advantage of the invention is that the space-saving part of the strip bent into a ring in the belt handling device can be straightened and stacked straight immediately after the transverse transport step. This makes it possible to stack a considerable number of parts of the tape in a relatively small space and then transport the entire stack away at once. An additional advantage is that the parts (ends) of the strip are straight after straightening the tire, so that they can be immediately transferred for re-use. In the arrangement according to the invention, the space of the operating personnel is only slightly smaller compared to the previous transverse transport by means of a crane, while the occupational safety is considerably better. Another advantage of a bending machine with a measuring boom (recommended design) is that the equipment can be automated to a great extent.

The invention will now be described in more detail by way of example with reference to the accompanying drawing, in which Figure 1 is a side view po. structure and Figure 2 illustrates it in plan view.

The metal strip 2 discharged from the spool 1 first passes through a roller straightening machine 3 and then to a cutter 4. A metal strip 2 having a thickness of e.g. 3 mm comprises an end 5 of about 8 m in length with a strength of e.g. 64 mm. This stronger, long end 5 must be cut off from the strip 2 and moved away from the strip handling device. The head 5 is cut by a cutter 4 and bent into a ring 7 by a bending machine 6.

As can be seen from Fig. 2, the bending machine 6 moves on the rails 8 transversely to the material path between the position 9 (material path) and the position 10 in front of the brooming point 11.

The bending machine 6 has four bending rollers 14, 15, 16 and 17. The last bending roller 17 is associated with a roller cage 18 into which the ring 7 goes. As the bending roller 16 moves between the bending rollers 15 and 17, the strip 5 (long end) bends into a ring 7, and when the ring 7 is straightened, the bending roller 15 passes between the externally positioned straightening roller 14 and the bending roller 16, whereby the long end bent into the ring 7 becomes straight again. A measuring boom 19, e.g. a light boom, is arranged in front of the straightening roller 14, which gives a stop signal to the drive of the bending machine 6 when the long end 5 passes the respective point between the two measuring points of the measuring boom 19.

Po. in the example the stacking point 11 is arranged parallel to the roll straightening device 3 and placed next to it so that the ring 7 moves from the bending machine 6 in the opposite direction to the material path and then further to the stacking point 11. The bending machine 6 is constructed can be arranged either transversely to the material path or to the opposite side of the rails 8, i.e. as a mirror image with respect to the structure of Fig. 2.

Device operation:

The long end 5 welded to the front end of the strip 2 is bent into a ring 7 by means of bending rollers 15, 16 and 17 and then moves to a bending machine 6. The cutter 4 then cuts the long end from the strip track 2. When the cut end passes the measuring boom 19, the bending roller drive stops. so that the rear end of the long end 5 still stops in front of the bending roller 14. The stop signal further instructs that • the bending machine 6 can move from position 9 transversely to its position 10 as a strip, in which case the strip 2 can move freely and it takes only a short time to remove the long end 5. In the position 10 in front of the stacking point 11, the straightening rollers 14, 15 and 16 start to operate,

II

Claims (3)

5 64302 whereby the long end 5 moves to the stacking point 11 in a fully straightened position. The corresponding operation is repeated when the rear long end is cut from the strip 2 or the following strip until there are a number of long ends 5 at the stacking point 11, which can then be moved together together. The straightening of the ring 7 at the stacking point 11 can take place simultaneously with the work steps performed on the metal strip 2 in the respective processing device. Thus, the straightening of the ring 7 can be performed, for example, when the metal strip 2 enters the longitudinal cutter 12 and from there on to the winding coil 13. A method for stacking parts of rolled steel strips, in which a part of strip cut from rolled steel at least four meters long is conveyed transversely away from the material web and stacked next to it at the stacking point, characterized in that the part of the strip to be cut is bent in the web as a ring in the transverse direction from the web of material to the stacking point, straightened again straight and then transferred straight to the stacking point. Apparatus for applying the method according to claim 1, characterized in that it comprises a bending machine 6 with bending rollers 15, 16, 17 for bending a part of the strip and with bending rollers 14, 15, 16 for correcting it, which moves transversely to the strip track behind the cutter 4. between the position 9 and the position 10 in front of the stacking point 11. Device according to Claim 2, characterized in that the bending machine 6 has a measuring boom 19 connected to the strip track in front of the externally arranged straightening roller 14, which gives the drive of the bending machine 6 a stop signal from the end of the cut strip.