EP1102647B1 - Deflection device for a strip, especially a metal strip - Google Patents

Abstract

The invention relates to a deflection method for deflecting a strip (3, 8), especially a metal strip (3, 8), from an initial guide channel (5) to a final guide channel (9) which runs next to said initial guide channel (5). When passing through the initial guide channel (5), the strip (3, 8) comprises an underside (II) which faces away from the final guide channel (9) and has an upper side (I) which faces toward the final guide channel (9). In order to support the deflection of the metal strip (3, 8) from the initial guide channel (5) to the final guide channel (9), the invention provides that the strip (3, 8) is subjected to the action of a medium (12) on the underside (II) thereof during the deflection. The invention also relates to a corresponding deflection device.

Description

The present invention relates to a deflection device for Deflection of a band, in particular a metal band, from an initial guide channel into a next to the initial guide channel extending end guide channel, the tape at Pass through the initial guide channel one from the final guide channel underside facing away and a facing the end guide channel Has top, wherein the deflection lower loading device for loading the underside of the tape with a medium, the deflecting device a driving device with an upper driving roller and a lower drive roller, the upper Drive roller on top and the lower drive roller on the bottom works.

Such a deflection device is, for. B. from EP 0 815 974 A1 known.

In the continuous winding of tapes, in particular of metal strips, must be the beginning of a subsequent strip a different reel than the end of the previous one Band. The tape must therefore come from an initial guide channel be diverted into a final guide channel. For this serves to apply the medium to the tape.

The object of the present invention is that of the deflection device known from EP 0 815 974 A1 easier to design.

The object is achieved in that the lower drive roller a lower scraper to strip the belt from the lower one Driving roller is assigned and that the lower loading device is arranged on the lower scraper.

The medium can, for example, compressed air or pressurized Be water.

In the case of a rotor reel, there is the presence of the lower loading device sufficient. With a multi-reel system however, the deflection device should also be an upper one Loading device for loading the top of the tape with the medium, so that the return of the tape from the final guide channel to the initial guide channel can be supported by the media exposure.

The upper loading device is also preferably on an upper scraper for stripping the tape from the arranged upper drive roller, if there is one is.

The start guide channel and the end guide channel are in the Usually separated from each other by a switch. The switch can have a pointed tip. Preferably the But rounded tip. A rounded one is particularly advantageous Tip that is rotatably mounted.

Figur 1

eine Umlenkeinrichtung in einem ersten Betriebszustand,

Figur 2

die Umlenkeinrichtung von Figur 1 in einem zweiten Betriebszustand,

Figur 3

die Umlenkeinrichtung von Figur 1 in einem dritten Betriebszustand,

Figur 4

die Umlenkeinrichtung von Figur 1 in einem vierten Betriebszustand,

Figur 5

eine weitere Umlenkeinrichtung in einem Rotorhaspel und

Figur 6

eine Weiche.

Further advantages and details emerge from the remaining claims and the following description of an exemplary embodiment. Show in principle

Figure 1

a deflection device in a first operating state,

Figure 2

1 in a second operating state,

Figure 3

1 in a third operating state,

Figure 4

1 in a fourth operating state,

Figure 5

a further deflection device in a rotor reel and

Figure 6

a switch.

According to FIG. 1, a deflection device has a drive device 1, 2 with an upper drive roller 1 and a lower one Driving roller 2 on. The drive rollers 1, 2 act on a metal belt 3 with an upper side I and a lower side II this from a roller table 4 and promote it further into one Starting guide channel 5.

The metal strip 3 is a thin metal strip with a strip thickness d of a maximum of approx. 3 mm. Since the metal strip 3 is hot, there is the risk that it will hang on one of the drive rollers 1, 2 stays if it is not under tension. To such a thing Prevent getting caught on one of the drive rollers 1, 2 the upper drive roller 1, an upper wiper 6 and a lower scraper 7 assigned to lower drive roller 2. By means of the scrapers 6, 7, the belt 3 is removed from the respective Drive roller 1, 2 stripped off if it gets stuck on it.

The danger of the tape 3 getting caught only exists if the metal strip 3 is pushed free of the drive rollers 1, 2 becomes. The wipers 6, 7 are therefore preferably on their respective drive roller 1, 2 adjustable to wear To effect stripping only when the metal strip 3 is pushed. As soon as in the metal band 3 behind the driving rollers 1, 2 a train is built, the wipers 6, 7 from their drive rollers 1, 2 pivoted.

The metal strip 3 is, as already mentioned, by means of Driving device 1, 2 conveyed out of the roller table 4 and in promoted an initial guide channel 5. At the end of it for example, a reel (not shown) is arranged, by means of which the metal strip 3 is wound up.

The metal strip 3 has a finite length and thus also a length Band end 3 '. Immediately behind the tape end 3 'runs the beginning of the strip 8 'of a subsequent metal strip 8 in the roller conveyor 4. This subsequent metal band 8 - or already its beginning 8 '- must be in a final guide channel 9 are redirected, next to the initial guide channel 5 runs. The end guide channel 9 is clearly such arranged next to the initial guide channel 5 that the tops I of the metal strips 3, 8 facing the end guide channel 9 and the undersides II of the metal strips 3, 8 from End guide channel 9 are facing away as long as the metal strip 3rd passes through the initial guide channel 5.

If now the subsequent metal strip 8 in the end guide channel 9 is to be deflected, first a switch 10, which separates the channels 5, 9 from each other, adjusted so that the open cross section of the initial guide channel 5 becomes minimal, that of the final guide channel 9 maximum. The end guide channel is also located 9 in the expected exit direction x of the following Metal strip 8. Already because of these measures the subsequent metal strip 8 in the majority of cases the driving device 1, 2 is deflected into the end guide channel 9. However, with a certainty a redirection of the following To effect metal strip 8 in the end guide channel 9 the deflection device has a back-loading device 11 on. By means of this back pressurization device 11 the metal strips 3, 8 on the underside II under pressure loaded with a medium 12. The medium 12 can For example, be compressed air or water under pressure.

By applying the underside II of the metal strips 3, 8 with the medium 12 is already started, while that Metal strip 3 passes through the driving device 1, 2. In terms of of the metal strip 3 and its strip end 3 ', this is not critical, since that metal strip 3 under tension in the initial guide channel 5th is drawn in. Regarding the beginning of the tape 8 'of the following Metal strip 8 but is by the application of the Medium the change in the final guide channel 9 with larger Security accomplished. This situation, that is Deflecting the beginning of the strip 8 'of the subsequent metal strip 8, is shown in Figure 2.

As can be seen from Figures 1 and 2, the bottom is Actuation device 11 arranged on the lower wiper 7.

The application described in connection with Figures 1 and 2 the metal strips 3, 8 with the medium 12 should be in reverse direction also occur when the other way round from the end guide channel 9 changed back to the start guide channel 5 shall be. For this purpose, the deflection device also points an upper loading device 13, by means of which the top I of the metal strips 3, 8 with the medium 12 is acted upon. Here too is the top loading device 13 on the corresponding upper wiper 6 arranged. Otherwise, this is done in FIGS. 3 and 4 shown deflection of the subsequent metal strip 8 analog to that previously described in connection with FIGS. 1 and 2 Redirection from the initial guide channel 5 into the final guide channel 9th

The deflection device described in connection with FIGS. 1 to 4 is used, for example, in a multi-reel system. In a multi-reel system, there is an alternation of one coiled up by two stationary reels. at a rotor reel system, however, as shown in Figure 5 the reel always starts at the same one Place, labeled A in Figure 5. After starting the The reel rotor with the two reel mandrels becomes the first turns A and B pivoted to position B. Then there is the Most of the metal strip 3 coiled. During the swiveling process the second, empty reel mandrel B becomes position A pivoted in order to be able to rewind the following tape 8. When reeling itself, the metal strip 3 therefore always runs through the start guide channel 5. Only at the beginning of the reeling the subsequent metal strip 8 must be in the end guide channel 9 are redirected. The redirection into the initial guide channel 5 takes place at a time when the metal strip 3 or 8 is under train, so that no deflection device this is necessary. So it is with a rotor reel sufficient if the deflection device is only the upper one Acting device 11 has.

As can also be seen from FIG. 5, the switch 10 a round tip 15 on. Already by rounding off the Tip 15 will most certainly damage the Band end 3 'avoided. The risk of damage to the Band end 3 'is even lower when the turnout tip 15, as shown in Figure 6, rotatable in the switch 10 is stored.

LIST OF REFERENCE NUMBERS

1

upper drive roller

2

lower drive roller

3.8

metal bands

3 '

tape end

4

roller conveyor

5

Beginning guide channel

6

upper scraper

7

lower scraper

8th'

A tape

9

end guide

10

switch

11

lower loading device

12

medium

13

upper loading device

14

reel

15

top

A, B

Posts, reel mandrels

d

thickness

I

top

II

bottom

x

exit direction

Claims (8)

1. Deflecting equipment for deflecting a strip (3, 8), particularly a metal strip (3, 8), from an initial guide channel (5) into an end guide channel (9) extending near the initial guide channel (5), wherein the strip (3, 8) on transiting the initial guide channel (5) has an underside (II) remote from the end guide channel (9) and an upper side (I) facing the end guide channel (9), wherein the deflecting equipment comprises a lower loading device (11) for loading the underside (II) of the strip (3, 8) with a medium (12), wherein the deflecting equipment comprises a drive device (1, 2) with an upper drive roller (1) and a lower drive roller (2) and wherein the upper drive roller (1) acts on the upper side (I) and the lower drive roller (2) on the underside (II), characterised in that the lower drive roller (2) is associated with a lower stripper (7) for stripping the strip (3, 8) from the lower drive roller (2) and that the lower loading device (11) is arranged at the lower stripper (7).
2. Deflecting equipment according to claim 1, characterised in that the medium (12) is compressed air or water disposed under pressure.
3. Deflecting equipment according to claim 1 or 2, characterised in that the lower stripper (7) is adjustable against the lower drive roller (2).
4. Deflecting equipment according to claim 1, 2 or 3, characterised in that it comprises an upper loading device (13) for loading the upper side (I) of the strip (3, 8) with the medium (12).
5. Deflecting equipment according to claim 4, characterised in that the upper drive roller (1) is associated with an upper stripper (6) for stripping the strip (3, 8) from the upper drive roller (1) and that the upper loading device (13) is arranged at the upper stripper (6).
6. Deflecting equipment according to claim 5, characterised in that the upper stripper (6) is adjustable against the upper drive roller (1).
7. Deflecting equipment according to one of the above claims, characterised in that the initial guide channel (5) and the end guide channel (9) are separated from one another by a diverter (10) and that the diverter (10) has a rounded tip (15).
8. Deflecting equipment according to claim 7, characterised in that the tip (15) is mounted to be rotatable.

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