DE2449562A1 - ROLLER INSTALLATION DEVICE FOR MULTI-CALIBER ROLLERS - Google Patents

Description

PATENT LAWYERS F.W. HEMMERICH GERD MÜLLER D. GPOSSE F. POLLMEIER 22

- bra -10.10.1974 , -El-

Morgan Construction Company, Worcester, Mass. (USA) Roll installation device for multi-caliber rolls

This invention is generally concerned with rolling mills or mill lines, and it is particularly concerned but with a new and improved roll mounting device for multi-caliber work rolls.

The term "multi-caliber work roll" used in this context is defined as a work roll that is designed in this way by its construction is that it can be placed on the end of a roller shaft and, moreover, on the surface of the Roll barrel is provided with at least three rolling caliber, the axial distance between the individual Roll grooves, as well as the axial distance between each outer groove and the adjacent roll end, "respectively is equal to.

It used to be when calibrated work rolls were placed on the end sections of the roll shafts a number of designs and procedures worked been. In the earlier designs, the work rolls only had one roll pass each, which in turn necessitated frequent roll changes, each time the caliber wore out and was worn out. After removal, a roller, the caliber of which was worn, was either Regrinded, or, if this was no longer possible, the roller scrapped.

In order to increase the roller service life or the roller service life, rollers with two roller gauges were later developed. If a caliber was worn or worn out on these waltzes, it would be © ₉

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with the other caliber to be able to continue the rolling process, the roller turned over, what with regard to the service life or the service life of the salts represented a considerable improvement. Others so far known constructions or processes worked with rollers that had more than two working calibres, as well as with devices for the · axial adjustment of the roller shafts, with the aim of this roller caliber on align the rolling direction. However, because the axial adjustment of the roller shafts is then an adjustment required when different types of rolling pass have to be adjusted to the rolling throughput line, were expensive and complicated for these constructions Bearings and drive gears required.

The aim of this invention is thus to provide a roll installation device for installing multi-caliber work rolls in a manner which enables considerable improvements to be achieved with regard to the life and service life of the rolls compared with the previously known roll installation devices can be. In order to be able to achieve this objective , this invention uses a spacer sleeve construction which is pushed axially onto the roller shaft between the multi-caliber work roll and a shoulder or shoulder on the roll shaft. The work roll is pressed by a holding structure against the spacer bushing structure in such a way that one of the rolling passes is aligned with the rolling line of the rolling mill. Now that the first rolling pass is worn out

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or worn, the support structure becomes temporary solved, the roller is also turned around in order to be able to use the other roller pass. Then the axial length of the spacer construction is changed, which can be done by having a Spacer bushing is additionally put on, or a spacer bushing is removed ", which is the case with the reinstallation of the roller has the consequence that it is displaced along the roller axis, namely over a distance that is equal to the distance between two adjacent rolling passes, which in turn is added leads that other rolling caliber can be set to the direction of passage in the rolling mill. In order to however, it is possible to use all the rolling passes, either through the selective one Adding or removing spacer elements or by rotating the roller and changing the roller position with respect to the roller shaft. This advantage is achieved without any axial displacements the roller shafts, which means that complicated and expensive shaft bearings and shaft drives are avoided.

Other objects of this invention are to provide an apparatus for installing multi-caliber work rolls which apparatus is robust, simple and inexpensive in construction , easy to maintain, quick to assemble and dismantle, the latter feature being for the Reducing unproductive rolling mill downtime is of particular importance.

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¹ I.

The subject matter of this invention is therefore a roll installation device for pushing a multi-caliber work roll onto a roll shaft. This device includes: a shoulder or shoulder on the roller shaft; a spacer sleeve construction on the roller shaft, this spacer sleeve construction engaging with one end in the aforementioned shoulder or shoulder, while the other end of the spacer sleeve construction is in engagement with a work roller which is pushed onto the roller shaft in the axial direction; Finally, there is also a holding structure that has to hold the work roll and press it against the spacer sleeve structure in such a way that one of the rolling passes is aligned with the rolling direction of the rolling mill. As far as the spacer construction is concerned, it includes at least one removable spacer element, the presence or absence of which changes the axial length of the spacer construction by a distance corresponding to the distance between two adjacent rolling mills.

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This invention will now be described below with reference to the in Drawing illustrated embodiment (the embodiments shown in the drawing) in more detail explained. The drawing shows in: -

Figure 1 is a section through a roll chuck of this invention.

2A further representations of a part of the roll installation device shown ^{with 1S FIG.}

3 Further illustrations similar to FIGS. 2A to 2C, only that they show two other exemplary embodiments of this invention.

As can be seen from FIG. 1, the roller installation device is identified by the general reference number 10. A roller 12 is placed or pushed onto a roller shaft 14 by this roller installation device 10. The roller shaft or the roller journal Ik includes an end section which is directed axially forward from an opening 15 in a stand 16 or housing 16. This stand or housing contains the bearings for the roll neck, the drive systems and other conventional components which are not shown because they are not an object of this invention. If FIG. 1 is viewed from right to left, the protruding end of the roll shaft or roll neck has a protrusion or shoulder 18, this protruding end part of the roll neck

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are also assigned: a short cylindrical part 20 with a slightly smaller diameter, a frustoconical section 22, the
extends from part 20 to another shoulder or shoulder 24, another cylindrical portion 26 extending from the shoulder 24 to a cylindrical portion 28 of larger diameter
is guided, in which case this cylindrical section is limited by the cylindrical end piece 32 "

A sealing ring marked with the general reference number 34 surrounds the opening 15 and becomes
so effective that from it the bearing lubricant
is held in the housing, while at the same time the binding of dirt and foreign matter is prevented,
for example the ingress of cooling water, scale
and the like. Associated with the seal is a ring 36 which is attached and fastened with respect to the housing 16, but also a scraper 38 'which is connected to the roller shaft or the roller journal 14 in such a way that it can rotate with this shaft or this roller journal . An elastic seal 40 is held by the stripper 38, the inner and outer splashes of which lie tightly against the stripper 38 and on the ring 36, belonging to the stripper 38
an outwardly directed flange 38a which cooperates with an axially extending flange 36a on the ring 36 , the cooperation of these structural elements causes the labyrinth seal to be closed. The stripper 38 also has an inner flange 38b, which is connected to the

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one end rests on the approach or on the shoulder 18, as indicated by the general reference number k2 , but with its other end on the spacer sleeve hh , as indicated by the reference number k6 . The spacer bush kh in turn rests at the point marked with the reference number k8 with its other end on one end of the multi-caliber work roll 12.

In the arrangement shown in FIG. 1, four roll calibres 12a, 12b, 12c and 12d incorporated, which are each arranged at a certain distance from one another. The rolling pass 12d is aligned with the rolling direction of the rolling mill, i. E. on the rolling direction P. The distance from the center of the caliber marked with "s" to the middle of the pass is the same for all neighboring rolling passes. Also the distance between the outer ones Rolling grooves and the adjacent roll end faces are equal to each other, so the arrangement of the roller on the shaft end or the end of the roll neck can be reversed.

The wiper 38 has a length “L ₁ ” in the axial direction, while the spacer or the spacer bushing has a length “Lp” in the axial direction. The wiper and spacer form a common spacer sleeve construction, the total length of which is equal to "L", the axial length "I2" of ^the spacer being equal to the distance "s".

The stripper 38 is held in place by a holding device and pressed against the shoulder or shoulder 18.

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This has the consequence that the spacer element kk is pressed against the scraper, but the roller in turn against the spacer element. The holding device consists of a wedge 50 which extends through a transverse slot 52 in the cylindrical section 26 of the roll shaft or the roll neck. The wedge 50 includes the two legs 50a and 50b, which touch the work roll at the point marked with the general reference number ^ k. The wedge 50 also has a central part 50c, which is guided through the slot 52. The middle wedge section has a recess, ie a recess 55 »which is designed in such a way that it can receive a correspondingly shaped cylinder head screw 56. The screw 56 is screwed into an axially guided threaded bore 58 which is guided from the transverse slot 52 except for another threaded bore 60, which has a larger diameter and is worked into the end of the shaft or the roll neck, ie in the roll neck end 32 .

Between the frustoconical section of the roll shaft or the roll neck, ie. between the truncated cone portion 22 and the work roll 12, is a jig. 66 arranged axially. This tensioning device includes a tubular intermediate section 67 which, as indicated by reference number 68, is provided with recesses to accommodate the wedge 50 and a head element 70, a cover element 74 being, as indicated by reference number 72 to the head element

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creates «This cover element 7 ^ in turn is through the knurled structural element 76 which has a threaded bolt 78 with a large diameter is assigned, held. The threaded bolt 78 is screwed into the threaded hole 60 «, the one with the Reference number 80, the threaded bolt 58 has a recess for receiving the cylinder head screw 56 is determined »

From the description it can now be seen that when the spacer element kh is in the installed position, when the cylinder head screw 56 is firmly tightened, but likewise also the threaded bolt 78, as shown in FIG. 1, the work roll 12 will be attached to the roll shaft or the roll neck lk in such a way that its roll caliber 12d is aligned with the rolling direction of the rolling mill. This arrangement is maintained until the rolling pass 12 is worn, whereupon the other rolling pass can be used in the following way:

Rolling caliber 12a

2A shows that the groove or the roll pass 12a can be aligned with the roll passage direction by simply turning or turning the roll 12. This is done as follows: After removing the threaded bolt 78, the cover 7k , the tensioning device 66 and the wedge 50, the roller 12 is turned over, whereupon the aforementioned structural elements ^ are mounted and fastened again.

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Rolling caliber 12b

If, after the two outer roller gauges 12d and 12a are worn, one of the two inner roller gauges, for example the roller gauges 12d, is to be used, the roller is removed in the manner described above, but also the spacer element or the spacer sleeve kk “ The roller is then put back on and pressed against the stripper 38 in the manner shown in FIG. The roller 12 is lh with respect to the roller shaft or the roll neck "displaced, which - as this has already been fingegeben before - the distance" over a distance ¹¹ I ₉ s "corresponds to rn between the Walzkalibc This means that?. now the rolling * caliber 12b is aligned with the direction of passage of the rolling mill.

Rolling caliber 12c

As can be seen from Fig. 2B, the rolling class 12c thereby on the rolling passage direction P of the rolling mill be aligned so that the roller rotated or flipped with respect to the position shown in Figure 2B will.

On the basis of the description given so far, it should be readily apparent to those skilled in the art that this invention is not limited or restricted to the use of multi-pass rolls having four pass grooves. Thus, FIGS. 3 shows the application of this invention with a multi-caliber roller which has three roller gauges, ie “whale gauges 12a, 12b and 12c. In this case, the insert or spacer kk would then be used when with the middle rolling pass 12b

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is rolled. The insert piece or spacer hk would then be removed and, by pressing the roller against the stripper 38, the roller pass 12a would be aligned with the roller conveyor system. After the roll is then reversed or turned, rolling can be carried out with the roll pass 12c, which is then aligned with the rolling direction P of the rolling mill.

Fig. 4 in turn shows another embodiment of the subject matter of the invention. In this case, using two spacers or spacers kka. and hkb worked with a multi-pass work roll which is provided with the five roll passes 72a-72e. The two spacers or spacer sleeves would then be used when rolling with the middle rolling pass 12c. A spacer or spacer bushing would then be removed for rolling with the rolling gauges 12b and 12d and aligning them with the rolling line of the rolling mill. Finally, the second spacer element or spacer would also be removed when rolling with the rolling gauges 12a and 12e. An alternative to this solution could be with a single and. large spacer, be used when rolling in the middle rolling pass, with a smaller spacer when rolling is to be carried out in the rolling pass 12b and 12d, and without a spacer element or spacer sleeve when rolling in the rolling pass 12 and 12e target.

This invention is not intended to be limited to the illustrated and described exemplary embodiments, Rather, it encompasses everything that falls within the scope of the claims attached to this patent application falls.

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Claims (1)

PATENT LAWYERS F.W. HEMMERiCh GERD MOLLE-R D. GRCSSE F. POLLMEIER 22 - bra - 10.10.1974 -Al- Morgan Constructi o n C o mpany, Worcester, Mass, (uSA) patent claims; - 1,, A roll installation device for mounting a multi-caliber work roll in a rolling mill the end portion of a roll neck, in such a way that in the working position one of the rolling caliber is aligned with the rolling direction of the rolling mill. This roller mounting device characterized in that a stop device for the roll neck heard; that between the aforementioned stop device and a multi-caliber work roll, which is pushed onto the roll neck in the axial direction, a spacer bushing device in this way is arranged so that one end can be pressed against the stop device, however, the other end touches one end of the multi-caliber work roll; that a holding device, which engages with one end in the roll neck, but with the other end the work roll encloses, holds the work roll and against the spacer sleeve, which is attached to a fixed Position on the roll neck, presses; that the spacer or the spacer sleeve itself composed of at least one removable structural element; that by the presence or by the absence of this spacer device an axial displacement is brought about, this axial displacement being equal to the distance is between adjacent rolling gauges on the work roll. 509827/0510 PATENT LAWYERS F.W. HEMMERICH GERD MÖLLER D. GROSSE F. POLLMEIER 22 - bra - 10/10/197 ** - A 2 - 2. roller installation device according to claim 1, characterized in that the aforementioned stop device as a shoulder or an approach to the roll neck is designed. '3. Roll installation device according to claim 2, characterized in that the aforementioned roll neck axially
idnera housing protrudes in which the lubricated roll neck bearings are arranged; that
Finally, a part of a labyrinth seal belongs to the spacer bushing device already mentioned, which is in engagement with the shoulder or the school gate and rotates together with the roll journal ₀ k λ roller installation device according to claim 3> ^c as characterized in that the other part of the aforementioned labyrinth seal is firmly attached to the roll stand and cooperates with the aforementioned first part in such a way that a seal is present between the roll and the roll stand. 5. roller installation device according to claim 1, characterized in that a wedge belongs to the holding device, which in the transverse direction through a slot in
Roll journal is guided and engages in the other end of the work roll; that
Finally, there is also an adjustable one 509827/051 0 2U9562 PATENTANWÄLTE FW HEMMER ¹ CH - GERD MÖL L ER · D. GROSSE · F. POLLMEIER - bh 10.10.1m; '+ - A 3 - Device is in engagement with the wedge and is so effective through the wedge that "from her the work roll against the spacer device is pressed. Roll installation device for the adjustable pushing on of a multi-potash, ber-work roll on a roll shaft or on a roll neck. This roller installation device is characterized by that the roll neck has an approach or a Has shoulder; that a spacer sleeve device in the axial direction on the roll neck is postponed; that this spacer device one end touches the approach or shoulder of the roll neck and with the other end one end of a multi-caliber work that sits axially on the roll neck roller; that a holding device that has to hold the roller, this roller against the spacer construction pushes, whereby the axial length of the spacer sleeve construction can be changed by partial lengths, these partial lengths being equal to the distance between adjacent ones Roll gauges are on the work roll. - End . 509827/0510