EP4031457B1 - Automated strap removal from a coil - Google Patents

Description

field of technology

The present invention is based on a method for removing binding bands from a coil produced by winding a band, the coil having two end faces and a lateral surface as well as a coil eye with an eye axis and the binding bands having a binding band width.

The present invention is also based on a removal system for removing binding bands from a coil produced by winding a band, the coil having two end faces and a lateral surface as well as a coil eye with an eye axis.

State of the art

A finish-rolled strip is usually reeled into a coil and transported in this form from a finishing train to another plant, in which the coil is reeled off again and the strip is then sent for further processing. The distance over which the coil is transported can be a few 100 m or many km. Further processing can be, for example, cold rolling with or without previous pickling. Other systems are also possible.

To ensure that the coil remains intact during transport, in particular that the outer windings of the coil do not become detached from the coil, the coil is tied with binding straps that run around the lateral surface of the coil. The binding tapes must be removed before further processing in the further plant become. The removal of the binding bands is preferably carried out automatically.

In the prior art, the coil is positioned for this purpose on a pair of floor rollers, the floor rollers being tapered in those areas in which the binding straps of the coil run. This makes it possible to automatically separate the binding tapes and then automatically pull them off the coil.

The prior art approach works very well provided the tie straps are positioned exactly where the bottom rollers have their tapered areas. In practice, however, this is often not the case. A possible reason for this is, for example, that the coil was coiled and tied in a finishing train after finish rolling and the tie straps were applied at positions A, while the further system is designed so that the tie straps are located at positions B, which are positions A is different.

If the tie straps are not in their expected positions, the tie straps can be separated in the entrance area of the further system, but cannot be pulled off the coil, since the tie straps are clamped between the coil and the floor rollers. In this case, the binding tapes have to be removed manually. This is time consuming and cumbersome.

The document DE3331577A shows a device for separating and removing a binding tape.

Summary of the Invention

The object of the present invention consists in creating possibilities by means of which an automated removal of binding bands is possible independently of their positioning on the coil.

The object is achieved by a method for removing binding bands from a coil produced by reeling a band with the features of claim 1. Advantageous configurations of the removal method are the subject matter of dependent claims 2 to 6.

1. a) dass zunächst, während das Coil in Richtung der Augenachse gesehen mit einem ersten Teilbereich seiner Mantelfläche auf einer ersten Auflage aufliegt, diejenigen Bindebänder entfernt werden, die in Richtung der Augenachse gesehen das Coil vollständig außerhalb des ersten Teilbereichs umgeben, und
2. b) dass sodann, während das Coil in Richtung der Augenachse gesehen mit einem zweiten Teilbereich auf der ersten Auflage oder einer zweiten Auflage aufliegt, wobei der erste und der zweite Teilbereich in Richtung der Augenachse gesehen mindestens um die Bindebandbreite voneinander beabstandet sind, diejenigen Bindebänder entfernt werden, die im Schritt a) noch nicht entfernt wurden.

According to the invention, a removal method for binding tapes is designed in such a way

1. a) that while the coil rests with a first partial area of its lateral surface on a first support, viewed in the direction of the eye axis, those binding straps are removed which, viewed in the direction of the eye axis, completely surround the coil outside of the first partial area, and
2. b) that then, while the coil seen in the direction of the eye axis rests with a second partial area on the first support or a second support, the first and the second partial area viewed in the direction of the eye axis being spaced apart by at least the width of the binding tape, removing those binding tapes that have not yet been removed in step a).

The removal of the binding straps is often involved in the transport of the coil from an input area of a further plant to a processing area of the further plant. The coil is transported from the input area of the further system to the processing area of the further system in that the coil is transported by means of a step beam in several stages in a substantially horizontal conveying direction from a first fixed saddle area to a second fixed saddle area, from the second fixed saddle area to a third fixed saddle area, etc. is conveyed to a last fixed saddle area, so that the coil rests alternately on one of the saddle areas and the step beam. In this case it is possible that a predetermined one of the saddle areas corresponds to the first support, the step bar to the corresponds to the second support, step a) is carried out while the coil rests on the predetermined saddle area, and step b) is carried out while the coil is being conveyed by means of the step beam from the predetermined saddle area to the subsequent saddle area. Alternatively, it is possible that the step bar corresponds to the first support, a predetermined one of the saddle areas corresponds to the second support, step a) is carried out while the coil is being conveyed by means of the step bar from the previous saddle area to the predetermined saddle area, and the step b) is carried out while the coil rests on the predetermined saddle area.

For example, it is possible that seen in the direction of the eye axis, the first partial area contains the edge areas of the lateral surface of the coil adjoining the two end faces and the second partial area contains a central area of the coil spaced apart from both end faces. In this case, the coil is supported “outside” in step a) so that the binding straps arranged “inside” can be removed automatically, and then supported “inside” in step b) so that the binding straps arranged “outside” are automatically removed can become. Alternatively, the reverse procedure is also possible, that is to say the first partial area contains the central area of the coil and the second partial area contains the two edge areas of the coil. Other procedures are also possible, for example that in steps a) and b) the coil is supported once on the left, in the middle and on the right and once half on the left and half on the right.

Within the scope of the removal method according to the invention, the eye axis can be oriented essentially orthogonally to the conveying direction. This is in contrast to the prior art, in which the eye axis is mostly oriented in the conveying direction. This procedure has the particular advantage that at the transition to the processing area of the further system, the coil does not rotate by 90° around a vertical running axis must be rotated, but can be further processed directly. However, configurations are also possible in which the eye axis is oriented essentially in the conveying direction.

Before step a) is carried out, the coil is preferably rotated about its eye axis, so that a tape head of the tape has a predetermined orientation with respect to a vertical plane containing the eye axis. This can prevent the coil from "jumping open" after loosening and removing the binding straps, i.e. the outermost turn detaching from the coil.

It is often advantageous if a diameter of the coil is determined by measurement. This can be useful in particular in order to adapt subsequent machining processes depending on the diameter. The diameter is preferably determined while the coil is resting with the first partial area on the first support in step a) and/or with the second partial area on the first or second support in step b).

The object is also achieved by a removal system with the features of claim 6. Advantageous configurations of the removal system are the subject matter of dependent claims 7 to 12.

• dass die Entfernungsanlage entweder eine erste Auflage oder die erste Auflage und zusätzlich eine zweite Auflage aufweist,
• dass die erste Auflage derart ausgebildet ist, dass das Coil zu einem ersten Zeitpunkt in Richtung der Augenachse gesehen mit einem ersten Teilbereich seiner Mantelfläche auf einer ersten Auflage aufliegen kann,
• dass entweder die erste Auflage oder die zweite Auflage derart ausgebildet ist, dass das Coil zu einem nach dem ersten Zeitpunkt liegenden zweiten Zeitpunkt in Richtung der Augenachse gesehen mit einem zweiten Teilbereich seiner Mantelfläche auf der ersten Auflage oder auf der zweiten Auflage aufliegen kann,
• dass in beiden Fällen der erste und der zweite Teilbereich in Richtung der Augenachse gesehen voneinander beabstandet sind und
• dass die Entfernungsanlage eine Entfernungseinrichtung aufweist, mittels derer die in Richtung der Augenachse gesehen das Coil vollständig außerhalb des ersten Teilbereichs umgebenden Bindebänder entfernbar sind, während das Coil mit dem ersten Teilbereich seiner Mantelfläche auf der ersten Auflage aufliegt, und die übrigen das Coil umgebenden Bindebänder entfernbar sind, während das Coil mit dem zweiten Teilbereich seiner Mantelfläche auf der ersten oder der zweiten Auflage aufliegt,
• dass die Entfernungsanlage einen ersten feststehenden Sattelbereich, einen zweiten feststehenden Sattelbereich usw. bis zu einem letzten feststehenden Sattelbereich aufweist,
• dass die Entfernungsanlage einen Schrittbalken aufweist, mittels dessen das Coil in einer im Wesentlichen horizontalen Förderrichtung in mehreren Etappen vom ersten feststehenden Sattelbereich zum zweiten feststehenden Sattelbereich, vom zweiten feststehenden Sattelbereich zum dritten feststehenden Sattelbereich usw. bis zum letzten feststehenden Sattelbereich förderbar ist, so dass das Coil während des Förderns abwechselnd auf einem der Sattelbereiche und dem Schrittbalken aufliegt,
• dass entweder ein vorbestimmter der Sattelbereiche (19) mit der ersten Auflage korrespondiert und der Schrittbalken mit der zweiten Auflage korrespondiert oder der Schrittbalken mit der ersten Auflage korrespondiert, der vorbestimmte Sattelbereich mit der zweiten Auflage korrespondiert und
• dass die Entfernungseinrichtung zumindest im Bereich des vorbestimmten Sattelbereichs betreibbar ist.

According to the invention, a removal system of the type mentioned at the outset is designed in that

• that the removal system has either a first requirement or the first requirement and additionally a second requirement,
• that the first support is designed in such a way that the coil, seen in the direction of the axis of the eye, can rest with a first partial area of its lateral surface on a first support at a first point in time,
• that either the first edition or the second edition is designed such that the coil to a after second point in time seen in the direction of the axis of the eye can rest with a second partial area of its lateral surface on the first support or on the second support,
• that in both cases the first and the second partial area are spaced apart from one another as seen in the direction of the axis of the eye and
• that the removal system has a removal device, by means of which the binding straps surrounding the coil completely outside of the first partial area, viewed in the direction of the eye axis, can be removed, while the coil rests with the first partial area of its lateral surface on the first support, and the remaining binding straps surrounding the coil can be removed while the coil rests with the second partial area of its lateral surface on the first or second support,
• that the removal system has a first fixed saddle area, a second fixed saddle area, etc. up to a last fixed saddle area,
• that the removal system has a step bar, by means of which the coil can be conveyed in a substantially horizontal conveying direction in several stages from the first fixed saddle area to the second fixed saddle area, from the second fixed saddle area to the third fixed saddle area, etc. to the last fixed saddle area, so that the coil rests alternately on one of the saddle areas and the step beam during conveyance,
• that either a predetermined one of the saddle areas (19) corresponds to the first support and the crotch bar corresponds to the second support, or the crotch bar corresponds to the first support, the predetermined saddle area corresponds to the second support and
• that the removal device can be operated at least in the area of the predetermined saddle area.

Many advantageous configurations correspond to those of the method. It can therefore often be referred to the above statements.

If the removal of the binding straps is integrated into the transport of the coil from an input area to a processing area of another system, it is possible for a predetermined one of the saddle areas to correspond to the first support and the step bar to correspond to the second support. Alternatively, it is possible that the crotch bar corresponds to the first support and the predetermined saddle area corresponds to the second support. In both cases it can be sufficient if the removal device can only be operated in the area of the predetermined saddle area.

The removal device, by means of which the binding tapes are removed, can in particular be designed as a robot.

The removal device preferably has an optical detection device for detecting the binding bands surrounding the coil. As a result, the binding bands can be detected in a particularly simple and reliable manner.

Brief description of the drawings

FIG 1

eine Walzanlage,

FIG 2

eine Draufsicht auf ein Coil,

FIG 3

eine Seitenansicht des Coils von FIG 2,

FIG 4

eine Seitenansicht eines Coils auf einer ersten Auflage,

FIG 5

das Coil von FIG 4 nach dem Entfernen eines Teils der Bindebänder,

FIG 6

eine Seitenansicht des Coils von FIG 5 auf der ersten Auflage,

FIG 7

das Coil von FIG 6 nach dem Entfernen des verbleibenden Teils der Bindebänder,

FIG 8

das Coil der FIG 4 bis 7 und seine Bindebänder,

FIG 9

eine Seitenansicht eines Coils auf einer ersten Auflage,

FIG 10

eine weitere Seitenansicht eines Coils auf einer ersten Auflage,

FIG 11

das Coil der FIG 9 und 10 und seine Bindebänder,

FIG 12

eine Seitenansicht eines Coils auf einer ersten Auflage,

FIG 13

das Coil von FIG 12 nach dem Entfernen eines Teils der Bindebänder,

FIG 14

eine Seitenansicht des Coils von FIG 13 auf einer zweiten Auflage,

FIG 15

das Coil von FIG 14 nach dem Entfernen des verbleibenden Teils der Bindebänder,

FIG 16

einen Transportgang von der Seite,

FIG 17

den Transportgang von FIG 16 von oben,

FIG 18

eine Ansicht eines einzelnen Sattelbereichs und

FIG 19

eine Seitenansicht eines Coils.

The characteristics, features and advantages of this invention described above, and the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of the exemplary embodiments, which are explained in more detail in connection with the drawings. This shows in a schematic representation:

FIG 1

a rolling mill,

FIG 2

a top view of a coil,

3

a side view of the coil from FIG 2 ,

FIG 4

a side view of a coil on a first support,

5

the coil of FIG 4 after removing part of the binding straps,

6

a side view of the coil from 5 on the first edition,

FIG 7

the coil of 6 after removing the remaining part of the binding straps,

8

the coil of 4 to 7 and its ties,

9

a side view of a coil on a first support,

10

another side view of a coil on a first edition,

11

the coil of 9 and 10 and its ties,

12

a side view of a coil on a first support,

13

the coil of 12 after removing part of the binding straps,

14

a side view of the coil from 13 on a second edition,

15

the coil of 14 after removing the remaining part of the binding straps,

16

a transport aisle from the side,

17

the transport route from 16 from above,

18

a view of a single saddle area and

19

a side view of a coil.

Description of the embodiments

According to FIG 1 a metal strip 1 is rolled in a rolling mill. Only the last roll stand 2 of the rolling mill is shown. After rolling, the metal strip 1 is coiled into a coil 4 by means of a coiler 3 . The reeled coils 4 are then tied with binding tapes 5 (see FIG 2 ) and removed from the rolling mill.

The FIG 2 and 3 show a coil 4 after binding. The coil 4 essentially has a cylindrical shape. According to the FIG 2 and 3 the coil 4 thus has two end faces 6 and a lateral surface 7 . The coil 4 also has a coil eye 8 with an eye axis 9 . As far as the procedure according to the invention is concerned, the eye axis 9 is generally oriented horizontally. The coil 4 has a diameter D and a coil width B. The binding straps 5 extend around the coil 4 on the lateral surface 6 . They have a binding bandwidth b. The binding band width b is considerably smaller than the coil width B. For example, the binding band width b can be 4 cm, while the coil width B can be 1 m, for example. The number of binding tapes 5 can be as required. It is usually between one and four. According to the illustration in FIG 2 For example, three binding straps 5 can be present.

For automated removal (English: removal) of the binding tapes 5 from the coil 4, the coil 4 is initially in accordance with FIG 4 with a first partial area of its lateral surface 7 on a first support 10 . Seen in the circumferential direction around the eye axis 9, the first partial area extends—of course—only over part of the circumference of the coil 4. Above all, however, the first partial area extends as shown in FIG FIG 4 seen in the direction of the eye axis 9 only over part of the coil width B. For example, the first support 10 can have two supports 11, which in turn have a respective support width b' seen in the direction of the eye axis 9 and seen from each other by a predetermined one in the direction of the eye axis 9 support spacing a are spaced apart. For example, the two supports 11 can have a support width b' of 10 cm and be spaced apart by 50 cm. Here, too, the numerical values mentioned are of course to be understood purely as examples.

In this state, i.e. while the coil 4 is placed on the first support 10, as shown in 5 by means of a removal device 12, first those binding bands 5 are removed which are in the direction of the axis of the eye 9 seen the coil 4 surrounded completely outside of the first portion. If, for example, the coil 4 rests on the supports 11 in such a way that the in FIG 4 left end 6 has a distance of 5 cm from the left support 11 and consequently with a coil width B of 1 m the right end 6 has a distance of 35 cm from the right support 11 and furthermore - purely by way of example - the binding tape width b is 4 cm, so can be removed in this state, all binding tapes 5, the center of which has a distance from the left end face 6, which is either between 17 cm and 53 cm or greater than 67 cm. A certain tolerance can still be taken into account as a precaution, so that, for example, only binding straps 5 are removed whose center is at a distance from the left end face 6 which is either between 19 cm and 51 cm or is greater than 69 cm.

So if, for example, as shown in FIG 2 there are a total of three tie straps 5, with the center of the two outer tie straps 5 each being spaced 15 cm from the adjacent end face and the center of the middle tie strap 5 being spaced the same distance from both end faces 6, so in this state the left tie strap 5 clamped by the left support 11 and therefore cannot be removed in this state. On the other hand, the middle and the right binding tape 5 can be removed. 5 shows this state in which the two binding tapes 5 mentioned have been removed.

At a later point in time, ie after the removal of those binding straps 5 which are in the state according to FIG 4 can be removed, then the coil 4 lies with a second partial area on the first support 10 . 6 shows this condition. Like the first sub-area, the second sub-area extends only over part of the circumference of the coil 4, as seen in the circumferential direction around the eye axis 9. Above all, however, the second sub-area extends as shown in FIG 6 seen in the direction of the eye axis 9 likewise only over a part of the coil width B. It is crucial that the first and the second partial area are spaced apart from one another by at least the binding tape width b, viewed in the direction of the eye axis 9 . For example, the coil 4 can rest on the supports 11 in such a way that the FIG 4 right end face 6 has a distance of 5 cm from the right support 11 and consequently with a coil width B of 1 m the left end face 6 has a distance of 35 cm from the left support 11. In this state, those binding tapes 5 which have not been removed before can now be removed by means of the removal device 12 .

Based on the numerical values mentioned above, which are purely exemplary, all binding straps 5 can now be removed whose center is at a distance from the left end face 6 which is either less than 33 cm or between 47 cm and 83 cm. As a precaution, a certain tolerance can again be taken into account, so that, for example, only binding straps 5 are removed whose center is at a distance from the left end face 6 that is either less than 31 cm or between 49 cm and 81 cm. FIG 7 shows this state in which the remaining binding tapes 5 are also removed.

8 illustrates this again. In 8 the coil 4 and its binding straps 5 are located. Furthermore are in 8 drawn those areas of the lateral surface 7, from which the binding straps 5 can be removed in the first and in the second state. The areas for the first state are in 8 denoted by I, the areas for the second state by II. As can be seen, the areas in their entirety cover the coil 4 without gaps over its entire width B.

The removal of the binding bands 5 as such can be done in the same way as in the prior art. The associated removal device 12 - ie the device which removes the binding tapes 5 from the coils 4 - can thus be designed as required be. For example, the removal device 12, as shown in FIGS 5 and 7 indicated schematically, be designed as a robot. Furthermore, it is possible for the positions of the binding bands 5 on the coil 4 to be specified by an operator to a control device 13 for the removal device 12 (usually a numerical control) or for them to be otherwise known. Preferably, however, the removal device 12 has an optical detection device 14, by means of which the binding bands 5 surrounding the coil 4 are automatically detected. The optical detection device 14 can be designed as a laser scanner, for example. If the optical detection device 14 is present, the optical detection device 14 transmits the data it has captured (e.g. images) or the evaluation results based thereon to the control device 13. The control device 13 then takes into account the data or evaluation results transmitted to it when controlling the removal device 12.

A measuring device 12 ′ is preferably also assigned to the distance device 12 . The coil diameter D in particular can be determined by means of the measuring device 12' and output to a control device (not shown in the figures). During the metrological determination of the coil diameter D, the coil 4 can rest alternatively with the first partial area or with the second partial area on the first support 10 .

The following is in connection with the 9 and 10 another possible embodiment of the removal system according to the invention is explained. This embodiment differs from that described above in connection with the 4 to 8 explained removal plant by matching the design of the supports 11 and the manner in which the coil 14 rests on the supports 11. The other statements are still valid.

According to the 9 and 10 the supports 11 form a sequence of supports 11. The supports 11 have a relatively large support width b' as viewed in the direction of the eye axis 9. It can be a little smaller than half the support distance a at most. The theoretical maximum is half the support spacing a minus half the binding tape width b'. For example, with a support spacing a of 1 m, the support width b' can be 40 cm.

According to 9 the coil 4 initially rests on the supports 11 in such a way that the edge regions of the lateral surface 7 of the coil 4 adjoining the two end faces 6 rest on adjacent supports 11 . The corresponding first partial area thus contains the edge areas of the lateral surface 7 of the coil 4 adjoining the two end faces 6. In this state, those binding straps 5 which are located outside the two edge areas of the coil 4 are removed. With the above numerical examples (coil width B 1 m, binding tape width b 4 cm, support width b' 40 cm and support spacing a 1 m), all binding tapes 5 can be removed whose center is at a distance from the left end face 6 of between 22 cm and 78 cm. If a certain tolerance is also taken into account, for example all binding straps 5 can be removed, the middle of which is at a distance from the left end face 6 of between 24 cm and 76 cm. In the in the 9 and 10 The example shown can thus be removed, for example initially only the middle binding tape 5 .

At a later point in time, the coil 4 is then in accordance with 10 on the supports 11 in such a way that the central area of the coil 4 rests on the supports 11 . The central area of the coil 4 is that area which is spaced apart from both end faces 6 . The central area preferably contains in particular that area which is equally spaced from both end faces 6 . The corresponding second partial area contains the central area of the lateral surface 7 of the coil 4, which is spaced apart from the two end faces 6. In this state the remaining binding bands 5 which have not yet been removed are removed. With the above numerical examples, all binding straps 5 can be removed, the center of which has a distance of less than 28 cm from one of the two end faces 6. If a certain tolerance is also taken into account, for example all binding straps 5 can be removed whose center is at a distance of less than 26 cm from one of the two end faces 6 . in the in 9 and 10 The example shown can now be removed, for example, the two outer binding straps 5.

The increment is therefore exactly or at least about half as large as the support distance a. By matching the increment to the support spacing a, all binding straps 5 can thus be removed in two consecutive steps. This is over 11 can be seen, in which those areas denoted by I and II are located in which the binding bands 5 are in the state according to FIG 9 and in condition according to 10 can be removed. As can be seen, the areas in their entirety cover the coil 4 without gaps over its entire width B.

The order in which the coil 4 rests on the supports 11 can of course also be reversed. So it can be the state according to first 10 be accepted and thereafter the state according to 9 . The procedure according to 9 and 10 has the advantage in both cases that a plurality of coils 4 can be transported sequentially one after the other through the removal system, that is to say that, for example, one coil 4 is always transported from the left and away to the right.

As far as explained so far, the same support 10 is used for both states in which the respective coil 4 rests with a partial area on a support, ie the first support 10 according to the terminology of the present invention. However, it is also possible for the coil 4 to be in the first state first rests on a first support 11 and then in the second state on a second support 15 (see 12 to 15 ). This procedure is described below in connection with the 12 to 15 explained in more detail. This configuration differs from that described above in connection with FIG 4 to 8 and 9 through 11, respectively, by matching the design of the supports 11 and the manner in which the coil 14 rests on the supports 11. The other statements are still valid. As far as the measurement of the coil diameter D is concerned, this can alternatively be carried out while the coil 4 rests with the first partial area on the first support 10 or with the second partial area on the second support 15 .

According to 12 the coil 4 initially lies on the first support 10 with the first partial area of its lateral surface 7 . Viewed in the circumferential direction around the eye axis 9, the first partial area extends again only over part of the circumference of the coil 4 and also viewed in the direction of the eye axis 9 only over part of the coil width B. For example, the first support 10, as before, can have two supports 11 which in turn have a respective support width b′ as seen in the direction of the eye axis 9 and are spaced apart from one another by a predetermined support spacing a when viewed in the direction of the eye axis 9 . For example, the two supports 11 can have a support width b' of 30 cm and be spaced apart from one another by a support distance a of 90 cm. The numerical values mentioned are again only to be understood as purely exemplary.

In this state, while the coil 4 is placed on the first support 10, the removal device 12 can first be used to remove those binding straps 5 which, seen in the direction of the eye axis 9, completely surround the coil 4 outside of the first partial area. If, for example, the coil 4 is placed centrally on the supports 11, so that a coil center axis 16 is equidistant from both Supports 11 is removed, so in this state all binding tapes 5 can be removed, which are arranged outside of the areas defined by the two supports 11 (plus the binding tape width b). In the specific embodiment according to the 12 and 13 this is only the middle tie 5. 13 Fig. 12 shows this state in which the center binding tape 5 is removed.

After removing those ties 5 that are in accordance with the state 12 can be removed, then the coil 4 is located as shown in 14 with a second partial area on the second support 15 . The second support 15 can be designed, for example, as a single support that extends over a specific length as seen in the direction of the eye axis 9 . The length of the second support 15 must be selected in such a way that it is smaller than the support spacing a of the two supports 11 minus twice the binding tape width b and additionally minus the support width b′. For example, with a support distance a of 90 cm, a support width b′ of 20 cm and a binding strap width b of 4 cm, the second support 15 may extend no more than 62 cm viewed in the direction of the eye axis 9 . In practice, the value selected is lower, so that the second support 15 extends, for example, over 40 cm or 50 cm, viewed in the direction of the eye axis 9 .

At a time after removing binding tapes 5 in the state according to 13 the coil 4 lies in the middle on the second support 15, so that the coil 4 protrudes exactly or at least substantially the same distance over the second support 15 on both sides or herewith the two end faces 6 exactly or at least substantially the same distance are spaced from the second support 15. 14 shows this condition. In this state, those ties 5 can be removed, which are in accordance with the state 12 have not been removed yet. 15 shows the state in which all binding tapes 5 have now been removed.

The procedure according to 12 to 15 is therefore similar to the procedure according to the 9 to 11 . The difference is that when proceeding according to the 12 to 15 the coil 4 successively rests on different supports 10, 15, namely on the first support 10 and on the second support 15, while the coil 4 in the procedure according to 9 to 11 rests both times on the same support 10, namely on the first support 10.

In many cases the removal of the binding tapes 5 is as shown in FIGS 16 and 17 involved in the transport of the coils 4 from an input station 17 to a further processing station 18. In this case, a transport aisle from the input station 17 to the further processing station 18 has a plurality of saddle areas 19 . The saddle portions 19 are fixed. Seen in a conveying direction x, they are arranged one behind the other. The conveying direction x usually runs horizontally or at least essentially horizontally. The saddle areas 19 generally point as shown in 18 each has two contact areas 20, which are spaced apart from one another in a transverse direction y that is oriented orthogonally to the conveying direction x and is also horizontal or at least essentially horizontal.

The saddle regions 19 are at a distance a′—calculated in each case from the center of the respective saddle region 19 to the center of the following saddle region 19 . To convey the coil 4 (or all coils 4 arranged in the transport aisle), the corresponding coil 4 is first placed, for example by means of a crane (not shown), on the foremost saddle area 19, ie on the in the 16 and 17 Saddle area 19 shown on the left. Then the coil 4 is conveyed by means of a step beam 21 from this saddle area 19 to the next saddle area 19 and so on up to the rearmost saddle area 19 . The crotch beam 21 is arranged between the support areas 20 of the saddle areas 19 as seen in the transverse direction y. The increment of the step bar 21 corresponds to the distance a' of the saddle areas 19 from one another.

In order to convey the coils 4, the step bar 21 is raised so that it lifts the coils 4 resting on the saddle areas 19. this is in 16 indicated by an arrow P1. So now the coils 4 are on the step bar 21 . In this state, the step bar 21 is moved to the right. this is in 16 indicated by an arrow P2. The addition a' is intended to indicate that the step bar 21 is moved to the right by its increment. Next, the stepping beam 21 is lowered so that the stepping beam 21 lowers the coils 4 resting on it onto the saddle areas 19 . The coils 4 have thus been passed on by a saddle area 19 each. Lowering is in 16 indicated by an arrow P3. The coils 4 are now resting on the saddle areas 19 again. Finally, the step bar 21 is moved to the left. this is in 16 indicated by an arrow P4. The addition a' is again intended to indicate that the step bar 21 is moved to the right by its increment. This completes the cycle by which the coils 4 are conveyed from a specific saddle area 19 to the respective next saddle area 19 . As a result, the coil 4 is conveyed by the step bar 21 in the conveying direction x in several stages from the first saddle area 19 to the second saddle area 19, from there to the third fixed saddle area 19 etc. to the last saddle area 19. In a single conveying step, the coil 4 is conveyed further by the distance a'. During the conveyance from saddle area 19 to saddle area 19 the coil 4 rests on the step bar 21 . In between, the coil 4 rests on one of the saddle areas 19 in each case.

It is readily apparent that the support areas 20 of the saddle areas 19 with the supports 11 of the embodiment according to FIG 12 to 15 and thus the corresponding saddle area 19 can correspond to the first support 10 .

It is further also readily apparent that the step bar 21 with the second support 15 of the embodiment according to 12 to 15 can correspond. So it is in the design according to the 16 to 18 possible to first remove the binding straps 5 arranged relatively far inwards, while the coil 4 rests on one of the saddle areas 19 . While the coil 4 rests on the step bar 21, ie while it is being conveyed to the next saddle area 19, the remaining binding straps 5 can then be removed.

It is also readily apparent that the reverse procedure can also be taken. In this case, the step bar 21 can correspond to the first support 10 so that the first part of the binding tapes 5 is removed while the coil 4 rests on the step bar 21 . In this case, the subsequent saddle area 19 also corresponds to the second support 15 . The remaining binding straps 5 are therefore removed in this case, while the coil 4 rests on this saddle area 19 .

In both cases it can be sufficient if the removal device 12 can only be operated in the area of the corresponding saddle area 19 . In particular, it is possible to lift the coil 4 only slightly from the corresponding saddle area 19 by means of the step bar 21 or to stop the step bar 21 shortly before the coil 4 is set down on the corresponding saddle area 19 and to remove the corresponding binding straps 5 in this state. However, it is of course also possible to design the removal device 12 in such a way that it can be operated beyond the area of the corresponding saddle area 19, for example up to the following or from the preceding saddle area 19.

It is conceivable to remove those tie bands 5 which are removed while the coil 4 is resting on the stepping beam 21 during the movement of the stepping beam 21. In in this case the distance device 12 has to follow the movement of the step bar 21 . Preferably, however, the movement of the step bar 21 is interrupted so that the step bar 21 is not moved during the period during which the coil 4 rests on the step bar 21 and a part of the binding tapes 5 is removed. This procedure has the advantage that the activation of the removal device 12 does not have to be coordinated with the ongoing movement of the step bar 21 .

As far as the orientation in the xy plane is concerned, the eye axis 9 can be oriented parallel to the conveying direction x. As a rule, however, the eye axis 9 is oriented orthogonally to the conveying direction x.

The coil 4 coiled metal strip 1 has as shown in FIG FIG 2 and 3 a strip head 22, ie the last coiled piece of metal strip 1. Preferably, the removal device 12 is preceded by a rotating device 23. For example, the rotating device 23 can be configured as shown in 17 Be part of the saddle area 19, which is arranged immediately in front of that saddle area 19 at which part of the binding straps 5 is removed. Alternatively, at least one other saddle area 19 can be arranged between the saddle area 19, which has the turning device 23 as a component part, and the saddle area 19, at which a part of the binding bands 5 is removed. The coil 4 is rotated about its eye axis 9 by means of the rotating device 23 , so that the tape head 22 has a predetermined orientation with respect to a vertical plane, which in turn contains the (horizontally oriented) eye axis 9 . For example, the coil 4 can be rotated in such a way that the tape head 22, as shown in 19 is arranged below a horizontal plane containing the eye axis 9, with said vertical plane includes an angle α, which is between 30 ° and 45 ° and the outermost turn of the coil 4, calculated from the tape head 22, first reaches its lowest point and only then its highest point.

The present invention has many advantages. The most important advantage is that the binding bands 5 can be reliably removed automatically, regardless of their position on the coil 4. Another advantage is that when the coils 4 are conveyed, depending on the design of the associated conveying device, the eye axes 9 of the coils 4 can be oriented parallel to the conveying direction x as required (see the comments on the 9 and 10 ) or orthogonal to the conveying direction x (see the comments on the 16 to 18 ).

Although the invention has been illustrated and described in detail by the preferred embodiment, the invention is not limited by the disclosed examples and other variants can be derived therefrom by a person skilled in the art without departing from the protective scope of the invention given by the claims.

Reference List

1

metal strap

2

mill stand

3

reel system

4

coils

5

ties

6

end faces

7

lateral surface

8th

coil eye

9

eye axis

10

first edition

11

Support

12

removal device

12'

measuring device

13

control device

14

optical detection device

15

second edition

16

coil centerline

17

entrance station

18

finishing station

19

saddle areas

20

support areas

21

step bar

22

tape header

23

rotating device

a

support spacing

a'

Distance

B

coil width

b

Binding Bandwidth

b'

column width

D

coil diameter

P1 to P4

arrows

x

conveying direction

y

transverse direction

a

angle

Claims (12)

1. Method for removing binding bands (5) from a coil (4) which is produced by coiling of a strip (1), wherein the coil (4) has two end faces (6) and a lateral surface (7), and also a coil eye (8) having an eye axis (9), and the binding bands (5) have a binding band width (b),

   a) wherein initially, while a first subregion of the lateral surface (7) of the coil (4), as seen in the direction of the eye axis (9), is resting on a first rest (10), those binding bands (5) which, as seen in the direction of the eye axis (9), surround the coil (4) completely outside the first subregion are removed, and

   b) wherein then, while a second subregion of the coil (4), as seen in the direction of the eye axis (9), is resting on the first rest (10) or a second rest (15), the first and the second subregion, as seen in the direction of the eye axis (9), being spaced apart from one another at least by the binding band width (b), those binding bands (5) which were not removed in step a) are removed,

   - wherein the coil (4) is conveyed, by means of an advancing bar (21), in several stages in a substantially horizontal conveying direction (x) from a first stationary saddle region (19) to a second stationary saddle region (19), from the second stationary saddle region (19) to a third stationary saddle region (19) etc. up to a last stationary saddle region (19), such that the coil (4) alternately rests on one of the saddle regions (19) and the advancing bar (21),

   - in that either a predetermined one of the saddle regions (19) corresponds to the first rest (10), the advancing bar (21) corresponds to the second rest (15), step a) is carried out while the coil (4) is resting on the predetermined saddle region (19), and step b) is carried out while the coil (4) is being conveyed from the predetermined saddle region (19) to the subsequent saddle region (19) by means of the advancing bar (21),

   - or, conversely, the advancing bar (21) corresponds to the first rest (10), a predetermined one of the saddle regions (19) corresponds to the second rest (15), step a) is carried out while the coil (4) is being conveyed from the preceding saddle region (19) to the predetermined saddle region (19) by means of the advancing bar (21), and step b) is carried out while the coil (4) is resting on the predetermined saddle region (19).
2. Removal method according to Claim 1,
   characterized
   in that, as seen in the direction of the eye axis (9), the first subregion contains the edge regions of the lateral surface (7) of the coil (4) which adjoin the two end faces (6), and the second subregion contains a central region of the coil (4), said central region being spaced apart from both end faces (6), or, conversely, the first subregion contains the central region of the coil (4), and the second subregion contains the two edge regions of the coil (4).
3. Removal method according to Claim 1,
   characterized
   in that the eye axis (9) is oriented substantially orthogonally with respect to the conveying direction (x).
4. Removal method according to one of the above claims,
   characterized
   in that, prior to carrying out step a), the coil (4) is rotated about its eye axis (9) so that a strip head (22) of the strip (1) has a predetermined orientation with respect to a vertical plane containing the eye axis (9).
5. Removal method according to one of the above claims,
   characterized
   in that a diameter (D) of the coil (4) is determined by measurement while the first subregion of the coil (4) is resting on the first rest (10) in step a) and/or the second subregion of the coil is resting on the first or the second rest (10, 15) in step b) .
6. Removal installation for removing binding bands (5) from a coil (4) which is produced by coiling of a strip (1), wherein the coil (4) has two end faces (6) and a lateral surface (7), and also a coil eye (8) having an eye axis (9),

   - wherein the removal installation comprises either a first rest (10) or the first rest (10) and additionally a second rest (15) ,

   - wherein the first rest (10) is designed in such a way that, as seen in the direction of the eye axis (9), a first subregion of the lateral surface (7) of the coil (4) can rest on a first rest (10) at a first point in time,

   - wherein either the first rest (10) or the second rest (15) is designed in such a way that, as seen in the direction of the eye axis (9), a second subregion of the lateral surface (7) of the coil (4) can rest on the first rest (10) or on the second rest at a second point in time following the first point in time,

   - wherein in both cases the first and the second subregion, as seen in the direction of the eye axis (9), are spaced apart from one another, and

   - wherein the removal installation comprises a removal device (12), by means of which the binding bands (5) which, as seen in the direction of the eye axis (9), surround the coil (4) completely outside the first subregion can be removed while the first subregion of the lateral surface (7) of the coil (4) is resting on the first rest (10), and by means of which the rest of the binding bands (5) which surround the coil (4) can be removed while the second subregion of the lateral surface (7) of the coil (4) is resting on the first or the second rest (10, 15),

   - wherein the removal installation comprises a first stationary saddle region (19), a second stationary saddle region (19) etc. up to a last stationary saddle region (19),

   - in that the removal installation comprises an advancing bar (21), by means of which the coil (4) can be conveyed in several stages in a substantially horizontal conveying direction (x) from the first stationary saddle region (19) to the second stationary saddle region (19), from the second stationary saddle region (19) to the third stationary saddle region (19) etc. up to the last stationary saddle region (19), such that the coil (4) alternately rests on one of the saddle regions (19) and the advancing bar (21) during the conveying operation,

   - in that either a predetermined one of the saddle regions (19) corresponds to the first rest (10) and the advancing bar (21) corresponds to the second rest (15) or the advancing bar (21) corresponds to the first rest (10) and the predetermined saddle region (19) corresponds to the second rest (15), and

   - in that the removal device (12) can be operated at least in the region of the predetermined saddle region (19).
7. Removal installation according to Claim 6,
   characterized
   in that the first rest (10) is designed in such a way, or the first and the second rest (10, 15) are designed in such a way, that, as seen in the direction of the eye axis (9), the first subregion contains the edge regions of the lateral surface (7) of the coil (4) which adjoin the two end faces (6), and the second subregion contains a central region of the coil (4), said central region being spaced apart from both end faces (6), or, conversely, the first subregion contains the central region of the coil (4), and the second subregion contains the two edge regions of the coil (4).
8. Removal installation according to Claim 7,
   characterized
   in that the eye axis (9) is oriented substantially orthogonally with respect to the conveying direction (x).
9. Removal installation according to one of Claims 6 to 8,
   characterized
   in that it comprises a rotating device (23) which is arranged upstream of the removal device (12) and by means of which the coil (4) can be rotated about its eye axis (9) so that a strip head (22) of the strip (1) has a predetermined orientation with respect to a vertical plane containing the eye axis (9).
10. Removal installation according to one of Claims 6 to 9,
    characterized
    in that the removal device (12) is assigned a measuring device (12'), by means of which a diameter (D) of the coil (4) can be determined while the first subregion of the coil (4) is resting on the first rest (10) and/or the second subregion of the coil is resting on the first or the second rest (10, 15).
11. Removal installation according to one of Claims 6 to 10,
    characterized
    in that the removal device (12) is designed as a robot.
12. Removal installation according to one of Claims 6 to 11,
    characterized
    in that the removal device (12) comprises an optical detection device (14) for detecting the binding bands (5) which surround the coil (4).

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