EP2861516B1 - Device for turning a moving web - Google Patents

Description

Technical area

The present invention relates to a Bandumlenkvorrichtung for angular deflection of bands, in particular metal bands, with a Umlenkzylinder to which the band is deflectable while maintaining the Bandzugs, the band by means of rolling elements, which are arranged on the deflection cylinder along a helical belt surface and form level bearing surfaces, is supported.

State of the art

In the industrial treatment of tapes, the individual processing stations are often housed in different halls, which are arranged angularly or reversed to each other. The direction of tape travel in a treatment line must then be changed for manufacturing reasons, often the top and bottom of a tape are turned.

For deflecting bands, various devices are known. Out DE 29 482 90 A1 For example, it is known to guide a belt over a deflection cylinder which is provided with rollers. A spiral deflection is off JP 55 080641 A known.

An angular deflection and / or reorientation of the strip surfaces, in which the inside or outside of a strip can optionally be supplied as a "good side" to a subsequent process step, is also often required in treatment lines of metal strips.

In the metal industry various devices are known for the angular deflection, for example, specially trained Umlenkstationen. For the reorientation of the surfaces of a band is known to handle the tape alternately from above or from below in the inlet part of the plant. Another possibility is to wind alternately from above or from below in the outlet part of the system. A third possibility can also be to wrap a bundle on a special investment. All these measures are associated with a considerable technical effort.

Presentation of the invention

The invention is based on the object to provide a Bandumlenkvorrichtung and a method for band deflection indicate, which requires less technical effort.

This object is achieved with respect to a Bandumlenkvorrichtung by the features of claim 1 and with respect to a method by the features of claim 14.

According to a basic idea of the invention, rollers with different setting are used on the peripheral side of a deflection cylinder: on a half-shell, the rollers are left-handed, arranged on the other side in the right-hand direction. Depending on the direction of the incoming strip, the rollers of one or the other half-shell serve as support surfaces for the strip. The deflection device is thus characterized in that the deflection cylinder between a first operating position and a second operating position is adjustable, each operating position is assigned in each case an arrangement of the rollers, and wherein the rollers of an arrangement with a helical wrap corresponding employment are aligned. Depending on production engineering Given this situation, a band, which alternatively comes from two oppositely directed inlet directions, can be easily deflected in each case by a deflection angle, for example by 90 °.

Brief description of the drawings

To further explain the invention, reference is made in the following part of the description to drawings, from which further advantageous embodiments, details and developments of the invention can be found by way of non-limiting embodiments.

Figur 1

eine Seitenansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Bandumlenkvorrichtung;

Figur 2

eine Aufsicht der Bandumlenkvorrichtung gemäß der Figur 1;

Figur 3

eine Seitenansicht eines zweiten Ausführungsbeispiels der erfindungsgemäßen Bandumlenkvorrichtung;

Figur 4

eine Aufsicht der Bandumlenkvorrichtung gemäß der Figur 3;

Figur 5

bis Figur 8 eine Gegenüberstellung zwischen einer ersten Betriebsart, bei der eine einfache winkelige Bandumlenkung erfolgt, und einer zweiten Betriebsart in welcher eine winkelige Bandumlenkung und gleichzeitig eine doppelte Umorientierung des Bandes erfolgt, bei der das Band mit der Oberseite in die erste Bandumlenkvorrichtung einläuft und die zweite wieder mit der Oberseite verlässt;

Figur 9

eine rechtsgängige Umschlingung eines Umlenkzylinders;

Figur 10

eine linksgängige Umschlingung eines Umlenkzylinders;

Figur 11

eine Ausführungsform einer Bandumlenkvorrichtung, wobei die Zufuhr des Bandes über eine Umlenkrolle erfolgt, die oberhalb eines Umlenkzylinders angeordnet ist;

Figur 12

eine Ausführungsform einer Bandumlenkvorrichtung, wobei die Zufuhr des Bandes über eine Umlenkrolle erfolgt, die unterhalb eines Umlenkzylinders angeordnet ist;

Figur 13

eine Ausführungsform einer Bandumlenkvorrichtung, wobei das Band zunächst einen Umlenkzylinder wendelförmig umschlingt und anschließend über eine oberhalb des Umlenkzylinders angeordnete Umlenkrolle abgeführt wird;

Figur 14

eine Ausführungsform einer Bandumlenkvorrichtung, wobei das Band zunächst einen Umlenkzylinder wendelförmig umschlingt und anschließend über eine unterhalt des Umlenkzylinders angeordnete Umlenkrolle abgeführt wird;

Figur 15

eine herausgerissene Detailzeichnung in welcher parallel zueinander ausgerichtete Laufrollen auf dem Umlenkzylinder dargestellt sind.

Show it:

FIG. 1

a side view of a first embodiment of the invention Bandumlenkvorrichtung;

FIG. 2

a plan view of the Bandumlenkvorrichtung according to the FIG. 1 ;

FIG. 3

a side view of a second embodiment of the invention Bandumlenkvorrichtung;

FIG. 4

a plan view of the Bandumlenkvorrichtung according to the FIG. 3 ;

FIG. 5

to FIG. 8 a comparison between a first mode in which a simple angular band deflection takes place, and a second mode in which an angular band deflection and at the same time a double reorientation of the band takes place, in which the band enters with the top in the first Bandumlenkvorrichtung and the second again with leaves the top;

FIG. 9

a right-handed wrap of a deflection cylinder;

FIG. 10

a left-handed wrap of a deflection cylinder;

FIG. 11

an embodiment of a Bandumlenkvorrichtung, wherein the supply of the tape via a deflection roller, which is arranged above a Umlenkzylinders;

FIG. 12

an embodiment of a Bandumlenkvorrichtung, wherein the supply of the belt via a deflection roller, which is arranged below a Umlenkzylinders;

FIG. 13

an embodiment of a Bandumlenkvorrichtung, wherein the band first wraps around a deflection cylinder helically and is then removed via a deflection roller arranged above the deflection roller;

FIG. 14

an embodiment of a Bandumlenkvorrichtung, wherein the band first wraps around a deflection cylinder helically and is then removed via a support of the Umlenkzylinders arranged deflection roller;

FIG. 15

a torn-out detail in which parallel aligned rollers are shown on the deflection cylinder.

Embodiment of the invention

FIG. 1 schematically shows in a side view of an embodiment of a Bandumlenkvorrichtung 1. It consists essentially of a deflection cylinder 3 at the Circumferential surface line-wise rolling elements are arranged, which are designed as an employee rollers 20. In FIG. 1 If the band 2 initially runs from left to right, it strikes the deflection cylinder 3 at the top and leaves it on its underside. The cylinder 3 is torsionally rigid on a frame, but by means of an adjusting device 16 about a vertical axis 5 (see FIG. 6 and FIG. 8 ) between two operating positions 31, 32 ( FIG. 4 ), wherein in each of these operating positions different arrangements 10, 11 of rollers 20 on the peripheral side of the deflection cylinder 3 are used. A more detailed explanation of the rollers 20 with right-handed arrangement 10 and left-hand assembly 11 takes place in the FIGS. 9 and 10 ,

The FIG. 2 shows the scenario in a supervision. The band 2 again runs in the direction of the arrow 14 from the left and leaves the Bandumlenkvorrichtung 1 in the direction of the upward arrow 15. The deflection angle 7 is 90 °. The wrap of the Umlenkzylinders 3 in FIG. 1 and FIG. 2 takes place in the sense of the right hand rule clockwise, that is in the form of a right-handed cylindrical spiral. The top "O" of the incoming run 21 is turned after leaving the Bandumlenkvorrichtung 1, so that in the plan view of FIG. 2 in the outgoing strand 22 the underside "U" of the band 2 can be seen. With the in FIG. 1 and FIG. 2 As shown device, it is possible to change the orientation of the belt 2, so that the incoming belt from the left 2 after leaving the Bandumlenkvorrichtung 1 enters the top down and at right angles to the inlet 14 into the next process stage.

As already mentioned, the inlet direction 14 and the desired outlet direction 15 are predetermined by the topology of the individual treatment stations in a workshop. It may be the task to redirect an incoming according to the inlet 14 belt 2 at an angle and at the same time also to effect a reorientation of the band 2, that is to say a reversal of band top O and band bottom U. Another object may be to angularly deflect a band 2 entering in accordance with the inlet direction 14 without at the same time causing the band 2 to reorient itself. that is, the inlet-side strip surface also remains the outlet-side strip surface. In the latter case, another role is given in FIG. 3 The task can also consist in an opposite to the tape running direction 14 incoming tape 2, for example by 90 ° (now in a mathematically positive sense) in FIG. 2 to redirect upward.

In the next two depictions of the FIG. 3 and FIG. 4 an embodiment is shown in which the band 2 also coming from the left, the band deflection device 1 should leave with the top "O" upwards. According to FIG. 3 So runs the belt 2 supported by support rollers 8 according to the arrow 14 in the Bandumlenkvorrichtung 1, but there first comes to the deflection roller 6. The axis 18 of this guide roller 6 is rotatably mounted in bearings and mounted on a support structure 9. It causes a 180 ° turn of the belt 2. The belt running plane is lowered by the diameter of the deflecting roller 6 (depending on the level at which the deflecting roller 6 is located; by arranging several deflecting rollers 6, the belt running plane can be varied as desired). The volume 2 enters FIG. 3 downstream again to a deflection cylinder 3, but now with respect to the representation in FIG. 2 in another (second) operating position 32 is located. This second operating position 32 is from the first operating position 31 (see also FIG. 2 ) by a horizontal pivoting movement by 90 ° emerged. The pivoting movement corresponds to the deflection angle 7 (FIG. FIG. 6 . FIG. 8 ). The pivot axis 5 of this pivoting movement is located in the crossing point between the axis 4 of the deflection cylinder 3 with the center axis 17 of the running strand 22. In this second operating position 32 wraps around the band 2 again the deflection cylinder 3, but now in a left-handed cylindrical spiral. In contrast to FIG. 2 now another group of rollers 20 is used, namely roller cassettes with a left-handed orientation 11. Here, the rollers 20 are employed in accordance with a left-handed helix.

By the employment of the rollers 20 in each roller cassette 10, 11 are respectively aligned according to the sense of rotation of the respective wrap, there is no difference in speed between the deflection cylinder 3 and band 2 on the belt surface, so that scratches and other damage to the surface of the belt 2 be avoided.

The helical looping of the deflection cylinder 3 in FIG. 4 causes a second reorientation, that is, the top and bottom are again reversed, so that the band 2 leaves the Bandumlenkvorrichtung 1 again equal to the side. In FIG. 4 This is expressed by the top of the belt 2 in the incoming strand 21 with "O" and also in the expiring strand 22 with "O" is designated.

To change the operating modes, the endless belt is first separated from the deflection cylinder 3. Subsequently, the deflection cylinder 3 is pivoted and the band 2 re-threaded. The changeover of the band deflection device 1 between the first and the second operating position 31, 32 will be described below on the basis of a comparison (in FIGS FIGS. 5 to 8 the band 2 is shown transparent) explained again.

• Um das von links einlaufende Band 2 um einen Umlenkwinkel 7 von 90° umzulenken, befindet sich der Umlenkzylinder 3 in einer ersten Betriebsstellung 31. Hierbei bietet die erste Anordnung 10 der Laufrollen 20 Auflagerflächen für die rechtsgängige Umschlingung. Die zweite Anordnung 11 der Laufrollen 20 befindet sich auf der anderen Halbschale und ist nicht im Einsatz.

First operating position 31 of the deflection cylinder 3 ( FIG. 5 and FIG. 6 ):

• To deflect the incoming from the left belt 2 by a deflection angle 7 of 90 °, the deflection cylinder 3 is in a first operating position 31. Here, the first arrangement 10 of the rollers 20 provides support surfaces for the right-hand wrap. The second arrangement 11 of the rollers 20 is located on the other half-shell and is not in use.

• Um das von links einlaufende Band 2 (siehe Figur 7) nicht nur um 90° umzulenken, sondern auch mit der gleichen "Gutseite" nachfolgenden Prozessschritten zuzuführen, wird das Band 2 zunächst durch eine Umlenkrolle 6 gewendet. Anschließend erfolgt die winkelige Umlenkung durch den Umlenkzylinder 3. Im Gegensatz zu der ersten Betriebsstellung bilden nun aber die Anordnung 11 der Laufrollen 20 die Auflagerflächen für linksgängige Umschlingung des Bandes 2. Die auf der gegenüberliegenden Halbschale angeordneten Anordnung 10 der Laufrollen 20 sind nicht in Bandberührung.

Second operating position 32 of the deflection cylinder 3 ( FIG. 7 and FIG. 8 ):

• To the left of incoming tape 2 (see FIG. 7 ) not only by 90 °, but also with the same "Gutseite" supply subsequent process steps, the belt 2 is first turned by a guide roller 6. In contrast to the first operating position but now form the arrangement 11 of the rollers 20, the bearing surfaces for left-handed wrap of the belt 2. The arranged on the opposite half-shell assembly 10 of the rollers 20 are not in band contact.

The arrangement of the deflection cylinder 3 and the deflection roller 6 is selected so that the strip running plane after leaving the Bandumlenkvorrichtung 1 is the same in both operating positions.

The switching between the first operating position 31 and the second operating position 32 is carried out as already mentioned in the present example by a carousel 16, which is supported on rollers in a guide on the ground (foundation) 19 a workshop. The drive of the carousel 16 can be done via chains or via a gear transmission or otherwise. By means of the carousel 16, the deflection cylinder 3 can be pivoted back and forth in a horizontal plane about a pivoting angle of, for example, 90 °. The pivot axis 5 extends at the intersection between the axis 4 of the Umlenkzylinders 3 and the central axis 17 of the outgoing strand 22. As a result, the axis 17 of the outgoing strand 22 for both operating positions 31 and 32 remains identical.

FIG. 9 shows the top view of a deflection cylinder 3, which is wrapped by the band 2 in a right-handed spiral. This corresponds to the first operating position 31 of the deflection cylinder 3. All rollers 20 with band contact must have an orientation corresponding to this right-hand spiral.

FIG. 10 shows the top view of a deflection cylinder 3, which is wrapped by the band 2 in a left-handed spiral. This corresponds to the second operating position 32 of the deflection cylinder 3. All rollers 20 with band contact must have an orientation corresponding to this left-handed spiral.

For manufacturing reasons, it makes sense to summarize the rollers 20 in common subassemblies. Thus, the right-hand rollers 20 are housed in right-hand roller cassettes with right-handed orientation 10, left-handed rollers 20 are housed in left-hand roller cassettes with left-handed orientation 11.

In each roller cassette 10, the rollers 20 are aligned parallel to each other and in the direction of the right-handed helix. Each roll cassette 10 is associated with a mounting surface on the cylinder surface. The attachment of a roll cassette 10 on the cylinder 3 by screws. Thus, the roll cassettes 10 are easily interchangeable. The roller cassettes 10 may be releasably secured to the cylinder surface but in other ways.

The same applies to the roll cassettes 11, on which the rollers 20 are aligned in the direction of a left-handed helix.

As in FIGS. 9 and 10 is shown, the roller cassettes 10 are only in a right-handed wrap in contact with the band 2 and in the left-handed wrap free, while the roll cassette 11 is only in a left-conventional wrap in contact with the band 2 and is free in the right-handed wrap.

The wrap of the band 2 but extends from the upper vertex 25 of the Umlenkzylinders 3 ("12 o'clock") to the lower vertex 24 ("6 o'clock"). Therefore, when changing the operating position 31 to 32 and vice versa, the orientation of the rollers 20 at the vertices 24 and 25 must be changed. This can be done by loosening the attachment and replacing the roll cassettes. Another possibility results from the use of a rotatable swivel cassette 12 at the upper and lower vertex 24, 25 of the deflection cylinder. 3

Here, the rollers 20 are housed in a roll cassette 12 which is rotatably mounted about its axis of rotation 13. The rotation axis 13 is parallel to the cylinder axis 4. By rotating the swing cassette 12 by 180 degrees, the orientation of the rollers 20 is changed from right-handed to left-handed or vice versa.

A crucial advantage of the invention is the fact that the mechanically and control technology consuming machines of the prior art for changing the Bandober- and -unterseite are no longer required. In particular, in a subsequent installation of a coupling of two lines, the possibility of changing the upper band side O and the lower band U can be realized by simple means.

The arrangement of the rollers 20 in cassettes has the advantage that a change in the orientation of the rollers can be done simply by changing the cassettes.
At the apexes 24 and 25, the symmetrical structure of the swing cassette 12 can be rotated about its longitudinal axis 13 by 180 °, the orientation of the rollers 20 are changed.

• Figur 11 zeigt eine Ausführungsform einer Bandumlenkvorrichtung 1, wobei die Zufuhr des Bandes 2 über eine Umlenkrolle 6 erfolgt, welche oberhalb eines Umlenkzylinders 3 angeordnet ist.

The arrangement of deflection cylinder 3 and guide roller 6 may be different depending on local circumstances and requirements. The FIGS. 11 to 14 show examples of different scenarios:

• FIG. 11 shows an embodiment of a Bandumlenkvorrichtung 1, wherein the supply of the belt 2 via a deflection roller 6, which is arranged above a deflection cylinder 3.

In FIG. 12 a scenario is shown in which the supply of the belt 2 via a deflection roller 6, which is arranged below a deflection cylinder 3.

FIG. 13 shows an embodiment of a Bandumlenkvorrichtung 1, wherein the belt 2 first helically wraps around a deflection cylinder 3 and then runs over a arranged above the deflection cylinder 3 guide roller 6.

In FIG. 14 The band 2 initially wraps around a deflection cylinder 3 in a helical manner and subsequently runs off via a deflection roller 6 arranged below the deflection cylinder 3.

FIG. 15 shows a portion of the deflection cylinder 3 with a view to a row-shaped arrangement of rollers 20. The rollers 20 are disc-shaped. Their faces are aligned parallel to each other. Each roller 20 is rotatably mounted about axis 26.

Although the invention has been further illustrated and described in detail by the preferred embodiments discussed above, the invention is not limited by the disclosed examples and other variations may be deduced therefrom by those skilled in the art without departing from the scope of the invention.

As described, the belt 2 runs from above over the deflection roller 6 and from above over the deflection cylinder 3. In another arrangement of deflection roller 6 and deflection cylinder 3, it is also possible for the belt 2 from below via the deflection roller 6 and from below to lead the deflection cylinder 3 ( Fig. 12 ) or first to guide it over the deflection cylinder 3 and then over the deflection roller 6 ( Fig. 13 ) (starting from the bottom up or from top to bottom).

For example, the deflecting cylinder 3, which is arranged in the above-described example, can also be rotatably mounted.

The rollers 20 may be designed differently, for example, have a cylindrical tread, or have the shape of a barrel.

Of course, the deflection angle 7 is not limited to 90 °, but can also take a different value.

Instead of the roll cassettes 10, 11 or 12 also differently shaped roller strips can be used. Except in the vertices 24 and 25, the supports of the rollers 20 may also be fixed fixed to the circumference of the Umlenkzylinders 3.

The storage of the individual rollers 20 should be basically smooth.
On a roll cassette, the axes of the rollers 20 are indeed parallel, but offset.

Compilation of the reference numbers used

1

Bandumlenkvorrichtung

2

tape

3

Helical turning roll

4

Axle of the deflection cylinder 3

5

swivel axis

6

idler pulley

7

deflection

8th

supporting role

9

support structure

10

Roll cassette with right-handed orientation

11

Roll cassette with left-handed orientation

12

swivel cassette

13

Rotary axis of the swing cassette 12 in the vertices 24 and 25th

14

incoming direction

15

exit direction

16

Actuator, carousel

17

Central axis of the expiring band

18

Axle of the deflection roller 6

19

Floor, foundation

20

castors

21

incoming run

22

leaking strand

23

Symmetrical line of the deflection cylinder 3

24

vertex

25

vertex

26

Axle of a roller 20

31

first operating position

32

second operating position

O

Band top

U

Band bottom

Claims (14)

1. Strip deflection device (1) for deflecting a strip (2), in particular a metal strip, at an angle, said device comprising at least one deflection cylinder (3) around which the strip (2) can be deflected while maintaining a strip tension, which deflection angle (7) is defined by the infeed direction (14) and the outfeed direction (15) of the strip (2), wherein rollers (20) are provided in the circumferential direction of the deflection cylinder (3), and form support faces of equal height for the strip (2) along a helical wrap, characterised in that the deflection cylinder (3) can be adjusted between a first operating position (31) and at least one second operating position (32) by means of an adjusting device (16), wherein each operating position (31, 32) is associated with a respective arrangement (10, 11) of the rollers (20), and wherein the rollers (20) of an arrangement (10, 11) are oriented at an angulation that corresponds to the helical wrap.
2. Device according to claim 1, characterised in that rollers (20) are arranged on the right hand in a first arrangement (10) and on the left hand in a second arrangement (11) in the circumferential direction of the deflection cylinder (3).
3. Device according to claim 2, characterised in that the orientation of the rollers (20) can be switched in the vertices (24, 25) of the deflection cylinder (3) by exchanging roller cassettes.
4. Device according to claim 3, characterised in that the rollers (20) are in each case arranged in groups and on an axis of rotation (13) extending parallel to the longitudinal axis (4) of the deflection cylinder (3) in the vertices (24, 25) of the deflection cylinder (3) and are oriented lying parallel to one another and by rotation about said axis of rotation the orientation of the rollers (20) can be switched between a first orientation (10) on the right hand and a second orientation (11) on the left hand.
5. Device according to one of claims 1 to 4, characterised in that the deflection cylinder (3) can be pivoted about a pivot axis (5) between the operating positions (31, 32).
6. Device according to claim 5, characterised in that the pivot axis (5) is arranged vertically and the deflection cylinder (3) can be pivoted about a pivot angle of 90°.
7. Device according to one of claims 1 to 6, characterised in that the rollers (20) are arranged in roller cassettes, and that the roller cassettes are each arranged in an axial direction (4) on the circumferential side of the deflection cylinder (3).
8. Device according to claim 7, characterised in that attachment surfaces are provided on the deflection cylinder (3), which are designed to receive the roller cassettes.
9. Device according to claim 8, characterised in that the longitudinal extension of each roller cassette (12) on both sides overhangs a strip (2) wrapping the deflection cylinder (3).
10. Device according to one of claims 7 to 9, characterised in that each roller cassette is attached to the deflection cylinder (3) by means of a detachable connection.
11. Device according to claim 4, characterised in that each roller cassette can be attached to the deflection cylinder (3) in an orientation in each case rotated by 180° about its longitudinal axis.
12. Device according to one of the preceding claims, characterised in that a deflection roller (6) rotatably mounted about the axis (18) is connected upstream of the deflection cylinder (3).
13. Device according to claim 12, characterised in that the deflection roller (6) is arranged on a supporting structure (9) and the level of the deflection roller (6) is higher than the level of the deflection cylinder (3).
14. Method for deflecting strips at an angle, by means of a strip deflection device according to one of claims 1 to 13 comprising the following first step

    - Unthreading the strip (2) from the strip deflection device (1), in which the deflection cylinder (3) is situated in a first operating position (31),

    - characterised by the following further steps

    - Changing the operating position (31) of the deflection cylinder (3),

    - Reorienting the rollers (20) at the vertices (24, 25) of the deflection cylinder (3) by switching the roller cassettes or by rotating pivot cassettes (12),

    - Feeding the strip (2) from a second infeed direction (14) and deflecting the strip (2) by means of the deflection cylinder (3) situated in a second operating position (32).

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