DE1965337A1 - Improvements to a rolling mill - Google Patents

Description

PATENTANWÄLTE FW HEMMERICH.- GERD MOLLER- D.GROSSE 21 685

DÜSSELDORF 1 0 · HOM BE RGER STR ASSE 5

12/22/1969 r »m. bk. -El-

United Engineering and Foundry, Co. Pittsburgh, PA 15222 / USA

Improvements to a rolling mill

The invention relates to a rolling mill with screwed-in stand posts, which makes it possible To use work roll chocks of minimum length. The work roll chocks and the backup roll chocks are designed to have a minimum of irregular and there are difficult-to-machine surfaces. In addition, the used Rails and wheels for quick dismantling and quick replacement of the work rolls in of a very simple and economical type with the backup roll chocks and the work roll chocks connected by separate connecting rods.

In the case of rolling mills of the previous design, it was To provide windows that had a more or less constant dimension, so that the length of the Chocks, the backup roll and the work rolls had to be dimensioned so that they cross the entire width of the window ran. This resulted in

Reference may be so far formed on the work rolls substantially higher cost than the chocks wider than necessary had to bring about the bearing unterzu _o and to be supported by the stand.

In addition, previous constructions required

«» In rapid pull on the work roll and back-up roll (o work pieces of a four-high stand the formation 2 ^ of the EinbaustÜeke in a complicated form. In the case of the JjJ Einbaustück® dev back-up rolls, long webs were provided in many cases to accommodate one or both of the built-in pieces Working rolls _BA o

Ί965337

PATENTANWÄLTE FW H EM MER ICH · GERDMO LLE R · D. G ROSSE 21 R85 DÜSSELDORF 1 0 · H OM BE RGER STR ASSE 5 ^ϊ

12/22/1969. Β rm.bk.

in addition to the upward projections or webs on which the balancing was attached. In the case of the workpieces of the work rolls, these were also used in many cases designed so that a correlation such

the result was that one of the work roll chocks was equipped with elongated webs to accommodate the other was. The downward webs, fc those on the backup and work roll chocks

formed, required the drastic relief of the upper part, the lower back-up roll chock, around a free space for the webs of the chocks to accommodate the chocks to be provided if this results in a change in the roll diameter, especially of the work rolls vertically be moved.

The previous rolling mills also had a very expensive and complicated structure for supporting of the work rolls in the rolling mill during their removal and replacement. In modern rolling mills, the rolls are made with their chocks as a single unit

changes. In this context, rails have been permanently attached between the on several occasions Stands and were used to support the work rolls during the roll change. The rails that are stationary Fixed in the stand required that the chocks in and out of a supporting relationship with the Rails were moved. Although suggestions have been made, the rails vertically in contact with the chocks of the work rolls and to move out of this, the proposals have not been found to be acceptable since this is already an intricate construction

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00 9829/1084 _{ofuelNAL 1NSP6CTE} o

PATENTANWÄLTE FW. H EMM ER I GERDMO LLER D. GR OSSE 21-685

DÜSSELDORF 1 0 H OM BER G E R ST R ASSE 5 December 22nd, 1969

I rm.bk.

- E 3 -

made it even more complicated, not to mention the additional costs involved.

Many of the aforementioned objections and limitations with previous rolling mills can be seen in a review of US patent no. 3 208260 of 9/28/1965, that of British Specification No. 91 + 6427 of January 15, 1961+.

It is therefore an object of the invention to provide a rolling mill construction all of the foregoing Solves problems in such a way that the roll change is simplified to a great extent and the construction costs of the rolling mill be reduced.

More precisely, it is the object of the invention to provide turned stands in a rolling mill construction, the application of work roll chocks with minimum width.

Another object of the invention is the use of very simply constructed chocks provide that do not require complicated processing.

Yet another object of the invention is that the rails provided for changing work rolls are attached to the backup roll workpieces by locking elements that are in contact and out of contact Contact with the wheels carried by one of the work rolls through a similar locking element by actuation the usual balancing cylinder for the upper back-up roll come. The construction of the - Locking elements in relation to their respective chocks is such that the work rolls as a result of the Influence of gravity can move from each other during the roll change period.

-Eh- 009829/1084

PATENTANWÄLTE F.W. H EM M E R ICH · G E R D M O LLE R · D. G R OSSE 21,685

DÜSSELDORF 1 0 H OM BERG E R ST R ASSE 5 December 22, 1966

for » rm.bk.

^ -Gl-

These features and advantages, as well as others, will become more apparent from the description below the preferred embodiment of the invention in conjunction with the accompanying drawings.

Figure 1 is a partial cross-sectional plan view of a rolling mill embodying the features of the invention owns.

FIG. 2 is a sectional illustration in plane II II of FIG. 1 and shows the parts in the position which they? · take while rolling. The one on the right Part shows rollers with a minimum diameter, whereas the left part shows the ratio of the parts to each other, when rollers with maximum diameter are used.

FIG. 3 is a sectional view similar to FIG. 2 and shows the rollers and other parts in the roller changing position.

Figure 1 shows 2 pairs of stands 10 and 11 with windows 12 for receiving the rolls of a rolling mill. As the parts which are identical to each stand, reference is only made to one of the stands and its parts. As. best seen from Figures 2 and 3, are in the center of the window 12, the uprights in the direction of the Turned in the middle of the rolling mill on both sides and form parts 13 and 14, the length of these parts being substantially which corresponds to the combined height of the work roll chocks 15 and 16. Parts 13 and IH are in the usual type provided with wear plates 17, which Touch wear plates 18 formed on work roll chocks 15 and 16. The chocks 15 and 16 rotatably support work rolls 19 and 21 and the lower chock 16 has 2 balancing cylinder units, 1 of which is shown at 22

009829/1084 ~ ^G 2-

PATENTANWÄLTE FW H EM MECH I GERDMO LLE R D. G ROSSE 21,685

DÜSSELDORF 1 0 HOMBERGER STR ASSE 5 December 19, 1969

ζ rm.bk.

- G 2 -

It should be noted that a similar cylinder is attached to the right side of the chock 16 which is not shown in FIGS. 2 and 3 but in FIG.

The upper and lower parts of the window 12 take the backup roll chocks in the usual manner 23 and 24, which rotatably support the backup rolls 25 and 26 and thus the rolling mill as a four-high rolling mill indicate in which the work rolls are supported by the backup rolls in the conventional manner. The upper and lower parts of the window 12 have wear plates 27 and 28, which are in contact with sealing plates 29 and 31, which are attached to the back-up roll workpieces 23 and 24 are attached. The lower chock 24 is attached to a filling block 25, the in turn, is supported on the underside of the stand. Also is - according to general practice - the upper backup roll chock through a Bearing block 33 detected, which in turn is in contact with the lower part of the adjusting screw 34, which is rotatable are attached to the top of the stand. In addition, the upper backup roll chock 23 is in communication with the webs 35 of a backup roll balancing cylinder unit, the ridges being pushed upwards to counterbalance a piston-cylinder unit 36 to effect.

Returning to the upper backup roll chock 23, it can be seen that its lower end has protrusions and 38 which are separately grasped by vertically extending rods 39 and 41. The bars have protrusions 42 and 43, which the projections 37 and 38 during record the change of goods for the work rolls.

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009829 / 108A

{■ · .- ■ - ■■ -. - ■ -

PATENTANWÄLTE FW H EM MER ICH GERDMO LLE R D. G ROSSE 21 685 DÜSSELDORF 1 0 · H OM BE RG ER STR ASSE 5 _ΑΛ . _Λ "", "-

- 22.12.1969

• ν 'rm.bk.

-G3-

The rods 39 and Ul are provided with stops 44 and if5, which prevents the rods from moving downwards below a pre-calculated tank, at which point the stops 44 and 45 engage the parts 13 and If of the stand. The rods 39 and U1 protrude through the parts 13 and IH and are provided at their lower ends with rails 46 and 47 which, as shown in FIG. 1, run through both stands 10 and 11 and on the operating side of the rolling mill to behind the stand run, where they interact with the roll changing device, not shown, which can take the form of a turntable, as shown in the aforementioned US and British patents. _v

As shown in Figures 2 and 3, the lower backup roll chock is 24 in the vicinity of the rails 46 uid 47 cleared to the rails in their record the lowest position, which is shown on the right-hand side of FIG. This location is as above mentions the position the parts occupy when using minimum diameter rollers. In reference to On the right-hand side of FIG. 2 one can see that the rod 41 is out of contact with the upper Stitxwalzen chock 23 and is supported by the projection 45 which is in contact with the part 14 of the stand 11.

It can be seen from FIGS. 2 and 3 that the chocks 15 and 16 of the work rolls are in communication with each other by separate bars 49 and 51, the bars being fixed are on the upper working roll chock 15 and run through the lower work roll chock IS «

-SH-

009829/1084

PATENT LAWYERS F.W. H EM M E R ICH · G ER D M O LLE R · D. G ROSSE 21 685

DÜSSELDORF 1 0 · HOM BE R G ER ST R ASSE 5

- 22.12.1969

Γ rmbk

-GI-

although the lower work roll chock can be moved relative to the bars. On the lower Wheels 50 are rotatably mounted on ends of the members 49 and 51. As shown in Figure 3, the rods are 49 and 51 provided with openings 52 and the lower chock 16 is provided with pegs 53, which serve as stops when the lower Arbeiswalζen-Εinbaustück through Gravity can release itself from the upper chock still held by rods 49 and 51.

A brief description of the removal of the work rolls from the rolling mill will now be given, in which Relationship Figures 2 and 3 allow a quick comparison of the operating position of the elements for Differences from the roll change position shown in Figure. During the rolling mill operation - how shown in Figure 2 - the rods 49 and 51 are each supported by the support roller chock 23, as shown on the left side of Figure 2 or by the stops 44 and 45, as shown on the right side of Figure 2 is shown. In either case, the rails 46 and 47 are out of contact with the Wheels 50 held, which are supported by the work roll chocks 15 and IB, so that during the Walzbetriebee the wheels never come into contact with the rails. Pie balancing cylinder unit 22 forces the work roll chocks apart, wherein the upper work roll chock 15 can be moved as a result of the openings 52 formed in the rods 49 and 51 ', this movement is limited by the max.roll gap that can be adjusted by adjusting screw 34.

-65- 009829 / 1-084

PATENTANWÄLTE FW HEMMERICH ■ GERD MÜLLER ■ D.GROSSE 21 685

DÜSSELDORF 1 0 · H 0 M BE R G ER ST R ASSE 5 22.12.196?

w rm.bk.

During operation, the balancing cylinder 36 lifts the backup roll chock 23 against the adjustment screw.

When the work rolls are to be changed, the screw 34 is raised and below the Pressure in cylinder 36, the upper support roller 25 is also raised, so-called that it inevitably the projections 42 and 43 engages and the rods 39 and 41 rises so that the rails 46 and 47 come into a supporting relationship with the wheels 50 of the work roll chocks 15 and 16; this The relationship is shown in FIG. When the wheels are moved off the rails, the bars become 49 and 51 are forced to rise causing displacement of the upper work roll chock 15 from the causes lower work roll chock 16 away by an order of magnitude determined by the Stops 53, which the lower part of the openings 52 of the rods 49 and 51 grips. When this happens like this is shown in Figure 3, the work rolls are moved apart and can be rotated relative to each other especially relative to the spindle coupling so that they can be aligned with the couplings, when the rolls are brought back into the rolling mill.

Together with the parts that occupy the positions shown in FIG. 3, ie with the work rolls which are supported by the rails 46 and 47, the work rolls are moved out of the rolling mill relative to the support rolls 25 and 26 in a device not shown. This may be in the form of a pressure pump as shown in the aforesaid U.S. and English patents or an operator side device for extending the work rolls as a unit from the line.

009829/1084

INSPECTED

PATENTANWÄLTE FW H EM MER ICjH · G ER DMO LLE R · D. G ROSSE 21

4 DÜSSELDORF 1 0 H OM BERG E R STR ASSE 5

12/22/1969 rm.bk.

- G 6 -

The change of the street is done in a way that is basically the reverse of that described above Process shown and is therefore not described.

In accordance with the provisions of the patent statutes, the principle and operation of the invention has been established explained and that explained and written what is considered to be the best form of training.

90 ^ 328 /

Claims (1)

PATENTANWÄLTE FW H EM ME R ICH · GERDM Ü LLER · D. G ROSSE 21,685 DÜSSELDORF 10 HOMBERGER ST RASS E 5 12/22/1969 'rm.bk. -Al- claims fl) jE ± n rolling mill, consisting of a stand, a window in said stand for receiving a pair of opposing roller assemblies including bearing chocks, those at opposite ends of the rolls are attached " characterized, that a device is connected to the opposing chocks of a roller unit, which runs in the direction of the opposite chocks of the other roller unit, a separate one Device, said connecting device with the opposite chocks of said other roller unit connects in such a way that a relative movement in the vertical direction between the opposing bearing chocks and the bearing chocks of the other Roller unit are recorded in such a way »that the named (Movement is limited and the opposite Bearing chocks are moved together. - A 2 - Ö03823 / 1084 PATENT LAWYERS F.W. H EM M E R ICH · G ER D M O LLER ■ D. G ROSSE 21 4 DÜSSELDORF 1 0 · H OM BER G ER STR ASSE 5 12/22/1969 rm.bk. -A ₂ - 2) A rolling mill consisting of a stand, a window in said stand for receiving a pair of work roll units and a pair of back-up roll units characterized in that the bearing chocks on the opposite Ends of said roller units are attached to a device by the bearing chocks one of said support rollers is supported in such a way that the said Bearing chocks moved, a work roll support device, provided by said Connecting device is carried and the work roll units during their removal from said Rolling mill and replacing supports. 3) A rolling mill according to claim 2, characterized in that that said connecting device with the opposite bearing chocks one of the called backup rollers is in connection and in the direction of the opposite bearing chocks of the other back-up rolls and in the device carrying said work rolls the extended parts of the specified connection requirements 25 direction is attached. A rolling mill consisting of a pair of staggered columns with vertical windows formed in said stands for the accommodation of upper and lower work roll units and upper and lower backup roll units, with the bearing chocks at opposite ends of the are attached, characterized in that the connecting rods for each upper support 009829/1084 -A3- 1 I · f I t PATENT LAWYERS F.W. H EMM ER I · GERD MÜLLER · D. GROSSE DÜSSELDORF 1 0 H OM BE RG ER STR ASSE 5 21 685 12/22/1969> fj rm.bk. ■ A3- roller bearing chock has one of its ends supported by the named bearing fixtures in such a way that that the connecting rods are vertical to the said upper backup roller bearing chocks are slidable, rails are attached to the other end of said connecting rods, said rails between the said uprights run, the connecting rods are attached to each upper work roll bearing chocks and toward the lower work roll bearing chocks run, a support device at the lower end of said connecting rods of the work roll bearing chock is attached, which are arranged above said rails. A device that called connecting rods of the work roll bearing chock connects with said lower chocks in such a way that a relative movement between the Opposite work roll bearing installation stalls possible is as well as an apparatus, said work roll tie rods forcing into engagement with the lower work roll bearing chocks, causing said Movement is limited and the opposing work roll bearing chocks be moved together. 5) A rolling mill according to claim 4 characterized in that each post has a pair of opposing protrusions possesses that go into said window and support surfaces for the bearing chocks of said work offer rollers, vertical openings are present in said projections; the above-mentioned upper support rollers Zen connecting rods received in the openings mentioned and the support surfaces formed on said work roll chocks become are in contact with said support surfaces 009829/1084 -au- ORDINAL INSPECTED PATENT LAWYERS F.W. H EM M E R ICH · G E R D M O LLE R · D. G ROSSE 21.685 DÜSSELDORF 1 0 - H OM BE R G E R STR ASSE 5 " 12/22/1969 rnubk. -Al of the mentioned protrusions. 6) A rolling mill according to claim. H- characterized in that said lower work roll bearing chocks are provided with protruding journals and said work roll connecting rods are provided with openings for receiving said journals, the construction being such that the openings allow a relative movement between the work roll bearing chocks Allow up to the point at which the pegs come into contact with the surfaces formed by said openings. 7) A rolling mill according to claim M-characterized that said upper backup roll connecting rods and said upper backup roller bearing chocks s> are constructed and arranged so that they can move relative to one another. 8) A rolling mill according to claim 4 characterized that said upper backup roller bearing chocks are in connection with a roller balancing system, thereby causing vertical movement of the upper backup roller bearing chocks and the piston-cylinder units in said lower work roll bearing chocks are arranged and force the work rolls apart. 9) A rolling mill according to claim 8, characterized in that the length of the? mentioned connection © rods of the support "walaen-Eirib-iUntü'-j? ^ m & J / ai'i ^ encJ 3, ang ^ © laagsen eats in besug ί \ fi t _a fr | s / 1 0 S i ■ .. · BAD ORfGtNAi PATENT LAWYERS F.W. H EM ME R ICH · G ERD M O LLER · D. G ROSSE 21 DÜSSELDORF 1 0 · HOM BE RGER STR ASSE 5 ^! 12/22/1969 rm.bk. -AS- on the location of said work rolls, so that a free space between the rails and of said support device is present during the rolling operation and the stroke of said Backup roll balancing system is such that said free space is eliminated and the rails grip said support device and the Lift the lower work roll off the lower back-up roll and thereby move the upper work roll away from it the lower work roll releases. - End - 009 829/1084 originally inspected L e r page ^: