US2628790A

US2628790A - Reeling furnace for hot band rolling

Info

Publication number: US2628790A
Application number: US111815A
Authority: US
Inventors: Schmidt Job; Frielinghaus Ferdinand
Original assignee: WESTFALENHUTTE DORTMUND AG
Current assignee: WESTFALENHUTTE DORTMUND AG
Priority date: 1949-05-04
Filing date: 1949-08-23
Publication date: 1953-02-17
Anticipated expiration: 1970-02-17

Description

Feb. 17, 1953 J. SCHMIDT EI'AL 2,628,790

REELING FURNACE FOR HOT BAND ROLLING Filed Aug. 25, 1949 Fjal florney I Patented Feb. 17, 1953 REELING FURNACE FOR HOT BAND ROLLIN G Job Schmidt and Ferdinand Frielinghaus, Dortmund, Germany, assignors to Westfalenhtte Dortmund Aktiengeselschaft,` Dortmund, Germany, a German company Application August 23, 1949, Serial No. 111,815

in Germany May 4, 1949 3 Claims.

This invention relates to reeling furnaces for hot band rolling.

In connection with rolling mills which treat the material to be rolled in backward and forward passes, it is known to provide in front and behind the reversing mill stand heated furnaces` `in which the rolled-out band ready for reeling is wound up and unwound. Generally, theseffurnaces are so constructed that the rolled material runs out of the furnace at the same point at which it had entered it only the direction of rotation of 'the drum of the reel having to be reversed for this purpose. Certain rolling processes of this nature however, make it necessary to provide furnaces out of which the rolled'material can also run out at a point which is located oppositely to that at which it has entered.

--The invention has for its object such a reeling furnace and it is the purpose of the invention so to contrive the furnace that the band' can be reeled or wound out at a point opposite to the point of entry as well `as the point of entry. To attain this, there are provided or arranged in a reeling furnace having a driven rotating reelingdrum, band guides or defiectors which embrace the band being reeled up, at the commencement of reeling. These band guides are provided with driving rollers and each one with a band stripper.

A furtherfeature of 'the invention is band guide located oppositely to the inlet point is provided with a band discharge conduit, the stripper allocated --to i the band discharge conduit in the guide closes the conduit to the drum at the commencement of reeling. In the stripping position, on the contrary, it serves also as a band running-on device.

In the reeling furnaces according to the invention, the band is completely reeled in and thus the drawback is avoided which exists with some known furnaces of this nature' that a certain length of a band must remain outside the furnace, in particular when, in order to efiect the un-reeling, the reversing mill stand carries out a further pass. Furthermore such a furnace allows optionally unreeling at the same point at which the running-in took place, so that the rolled material can be again carried to the same mill stand. It is furthermore also possible that running-out of the band from the iurnace takes place at the side opposite to the point of entry, so that a further train of rolls, or the like', can be fed from this furnace without it being necessary for this purpose to disturb the rolling prothat 'the 2 cedure in the mill stand located inefront of the furnace or the train located 'in front of the furnace.

In order to attan a reliable* reeling-off and reeling up, a pair of strip draw rollersis provided 'in the direct vicinity of the entry or exit opening of each of the furnaces.

In Figs. 1 and 2 there is represented diagrammatically in vertical section a preferred embodiment of the reeling pfurnaces according to the invention, by way ofexample, and this in two different working positions. i

in the reeling furnace I, the cylindrical reel.- ing drum 2 is carried on the driving shaft 3 secured against rotation and axial displacement. The reeling drum 2 is embraced by two segment-shaped band guides or deflectors 4 and 5, the arrangement being preferably so contrived that at least in their upper part the two band ,guides engage one another comb-like. The band guides are displaceable radially of the drum 2 in slots 6. Driving rollers 'I are arranged in' the band guide which rollers are arranged in the segment-shaped band guides andare driven in known manner from theoutside of the furnace; At the commencement of reelin these driving rollers are actuated and they can yield as; they are under an elastic and radially directed pres-.- sure. On the retraction of the band guides the drving rollers also come out of operation.

The band guide 5 is provided with a band discharge conduit ID. The band stripper 8 is os cillatably carried at 9 in this discharge conduit. In Fig. l this stripper 8 isshown in the position of rest in which it closes the conduit H) with respect to the drum or the wound-up band.

The oppositely located band guide 4 is also provided With a stripper Il supported at 2, so that an entry gap for the band between the stripper and the other band guide 5 results;

At the free end of the band guide 5 which is adjacent to this inlet conduit, there is a band bridge [3 oscillatable about the pivot l and which forms an uninterrupted band-supporting path from the strip-drawing pair of rollers t to the band guide 5. The free end of the band bridge l3 meshes in the connecting piece 2! which is arranged adjacent the pair of strip-draw rollers !1 is provided at the exit end of the furnace !9 and co-operates with the oscillatable stripper 3 which at the same time serves as band discharge when in the working position of Fig. 2. The furnace opening !9 may as shown at 20, be closed by a fiap or slide if the opening is not required.

Tilting tables !6 or 18 serving for the running ip and down of the band on the rollway 22 cooperate with the pairs of strip-drawing rollers. When, according to Fig. 1, a band tip runs over the rocker IS through the pair of draw rollers l and over the connecting piece I 3 into the path between %and guide {5 'and drum 2, it is forced by the first driving roller 'I 'against the driven drum 2 and run on without friction. The band discharge conduit ID is closed by the stripper B so that the band cannot hit against this part. On its further movement it is seized by the up`p`e r driving roller 'l and being further pressed against the circumference of the drum it is jcnveyd to the driving roller 1 of theband uide 4 and, finally, so carried forward that, safely carried over the inlet point, it is pressed under the band running in. After one'or two 'turns of the band have been reeled on, the band guides 4 and 5 are withdrawn and brought into the outer position which is shown in Fig. 2. The reeling-up of the band is then continued automatically by the 'drum "iitiltl whole band "is jfeled into 'the ``rnae Nw the two band guides `'or the driving rollers I are applied tothe tan `23 *that the felatia lly yieldihg rblle'i's afss in 'p rticular th jd'bfthe 'band'tc the ciruintr-enea 'of 'the j I I y If the band isto 'reele off, then the 'stripper l 'l is brought into thepositi'on 'shwn in Fg. 2 if the band is to b" grua out; again through the inl'etfopening. Should, dh thebdr'itrafy, it b er un 'out through the rear opening, then thefst'ripper 8 is brought into the osition shown'in Fig. 2`a nd in jthisfway effects the running ut.

The' driving 'roller's 'I hereb'y rotate 'in the sense pr "as s'isti'ng the 'e firu'dihg movement, By 'this means, the fermat-,ich 'of lops `or stoijpages on 'the s`tripers is brevented. The "stock is safely coiveyed to the 'strip drawing 'rollers '(5 or ll until 'these *seite the tip of the 'band and can taleover the 'further trai'sfrt. Rolling mills provided with iurnaces accordnrg 't the invention fare adapted 'for a great uinhenf 'rolihg methods, for instance'reelihg *se in mbiatioh ;with nassesin further re- I ll stands oreven 'in following-conns. glt'i's utherbossible touse the i buffer should ihterrubtins of any e ''s the whole band inay berun ere tf t m f tur A V. I ble by sbw rotation of 'the drum withpiit a y ehds "p'roje ctin'g from the furnace and i mg down 'jas in known fur-rraces Furnaces oiii'g to the 'invention arepreferably used fr`reli`g`ps'es of u`s`ua1 thickness.

Naturally, furnaces according to the invention may as to` their shape arrangement, conditions of size, and the like differ more or less from the Construction shown in the drawings said construction being only diagrammatic and by way of example, without deartin the fu'ndamental "idea of the inv'ention, by such changes, which allows reeling-out without friction in a direction opposite to the running-in direction. For example, 'the onduit ID can be shaped that the band can also be wound from the rear into` the furnace if desiredwh-ereby the reeling-out can beclrried 'out in the same or in the opposite direction ;Having nowparticularly described and ascertained the nature of our said invention and in 'what manner the same is to be performed, we declar that what we claim is:

-1. 'In a reeling furnace, a reversible reeling drum onto which a continuous` band is reeled. a miyaf n sl 'erzc ine b n guides each par tially embracing the drum, one 'serving as a guide fortheentering portion of the band and the Other iorguiding the outgoing portion ef the band and ornb lile extensions on ad jacent ends of said band guiles, the extension of one uide interfitting with the extension of the other guide, thereby to insure guiding of the band throughout the entire circumfernce of the drum. i I

2. A reeling furnace as claimed in claim -1, comprisingga sliding m ounting -fo "each band guide for affording ;translate-ty reetilinear -shifting movement threof toward and away from the reeling drum. I

3, A reeling f urn ace "as claimed in claim '2, comprising a stripper arm 'carried by and movable with one of said band guides, said band guide having a conduit extending theneth-rough and the stripper arm being disposed in-such conduit. ,i

:JQB SCj MIDI FERDINAND FRIELINGHAUS.

REFERENCES CITED The following referenes are 'of record in "the file of this patent:

UNITED -STTES PATENTS