DE1109121B - Rolling mill for the simultaneous rolling out of fine steel and wire in two cores with one drive for the rolling surfaces of both cores - Google Patents

Description

The invention relates to the regulation of the roll speed as a function of the existing one Roll stock in a roller train, in particular fine steel or wire train, in the case of the roller sets of the stands at the same time two rolling stock cores from a common drive in two adjacent calibers arranged on the roll barrel of each set of rolls are rolled.

According to the main patent application is in a rolling train with rolling mills for simultaneous Rolling out of two cores with a drive for the rolling surfaces of both cores into corresponding ones Rolling stations, depending on the size of the one vein between two successive ones Rolling points formed loop the speed of the roller parts of both veins and depending on on the size of the loop formed by the other wire, the mutual spacing of the this wire to be rolled rolling surfaces are employed, provided that the rolling surfaces during rolling of fine steel and wire for both cores formed by a roller and all calibres for one vein on one side and all the calibres for the other vein on the other side of the rollers are arranged in the same direction in the sequence used at the same time, the adjusting device being the Rolling device of the roll stand located on the side of the pitch regulating wire is used is.

The advantage of such a scheme is that both one and the other loop when The rolling process is detected by the control process and operational disruptions in two-wire rolling are avoided will.

This type of regulation has the disadvantage that by changing the roll position on one side not only is the second wire corrected with regard to the resulting stock of rolling stock (elongation), but at the same time the first wire in relation to its distance to the second wire in the same way being affected. The consequence of this can under certain circumstances be that the resulting changes the speed of the rolls of the upstream or downstream stands through the loop of the first Because there is constant unrest in the rolling mill.

The object of the invention is therefore to improve the control device according to the main patent application, which avoids unnecessary regulation of the loops of both cores with two-core rolling and one smooth running of the roller train guaranteed.

As a solution to the problem, it is proposed to roll out simultaneously in the case of a rolling mill of fine steel and wire in two cores

with one drive for the rolling surfaces

both veins

Addition to patent application Sch 24151 Ib / 7a
(Interpretation document 1 093 764)

Applicant:

Schloemann Aktiengesellschaft,
Düsseldorf, Steinstr. 13th

Dr.-Ing. hc Hans-Peter Lemm
and Felix Pollmeier, Düsseldorf,
have been named as inventors

a control device for a rolling train with two-wire operation and one set of rolls per rolling station according to the main patent application through the loop of the pitch regulating wire the speed of the their upstream or downstream rolling stands in the ratio of the distance between the speed-regulating core to regulate that of the pitch regulating wire from the pivot point of the rolling surface to be pitched.

However, it cannot yet be avoided that the regulation of the rolling cores is non-reactive is working. It is therefore also proposed that the pivot point be used when regulating the two roller cores of the rolling surface to be placed in the caliber of the speed-regulating core. The Vein, the caliber of which forms the pivot point of the rolling surface to be adjusted, depending on the loop of this vein formed between two scaffolds. But here, too, remains of that Control of the speed of the rollers of the upstream or downstream rolling stations for the first core inevitably the control device for the second wire is not unaffected. This is remedied by the Loop of the speed-regulating wire also regulates the pitch of the rolling surface for the pitch-regulating core will. The regulation thus takes place without any retroactive effects.

Embodiment of the invention is shown in the drawing. It shows

109 618/190

3 4

Fig. 1 a roll stand for co-regulation of the speed pivot point A corresponding ratio

by the adjustment control in the side view, core 10 influenced by the correction of core 11.

2 shows a plan view of the loop control. This change in the increase or decrease in length

between a frame according to Fig. 1 and the following, wire 11 is according to the invention via a grinding -

Fig. 3 is a plan view of the roller adjustment, 5 contact 27, which is rigidly attached to the roller 3 and

with pivot point in the caliber of the speed-regulating so that every change in the position of the roller 3 in

Vein, with respect to its longitudinal axis, follows, for example through

4 shows the view corresponding to FIG. 3 of a rolling control of a resistor 28 which is in the control loop 29

framework, the motor 30 is balanced. The engine 30 is

Fig. 5 is a plan view of Fig. 4 of the loop io the drive for the in the roll stand before or after

regulation between two stands, ordered roll stands. Once the loop of the vein

Fig. 6 the side view of a roll stand after 11 leaves the control field 19 or 20 again, the

Fig. 4 for co-regulation of the adjustment by the adjustment motor 9 stopped.

Speed control, After the rolled stock lengths of the cores 10, 11

Fig. 7 is a plan view of Fig. 6 on the loops 15 have gone through, the U-shaped grooves

regulation between two stands. 14, 14 'raised again so that they are used for guidance

Two successive rolling stands 1 and 2 of the subsequent rolling stock lengths of the cores 10, 11 a two-core rolling train will be used by the until it is in the roll stand 2 for tapping the rolling stock come in the direction of the roll stand 1 to the rolling. At the same time, the roll adjustment run through stand 2. The roller 20 shown in Fig. 1 on the side of the core 11 back on the starting stand 1 has reels 3 and 4, which are returned via joint value after, for example, the end spindles 5 and a (not shown) comb roller of the wire 11 free scaffolding a (not shown) contact from an engine (also not shown). Then the following roller drives can will. run in good lengths.

The top roller 3 is in a known manner by 25 Figs. 3, 4 and 5 represent a further roller train

Pressure spindles 25 and worm gears 26 against that which is constructed essentially the same as

Lower roller 4 adjustable. The one with the worm wheels according to FIGS. 1 and 2.

26 cooperating screw shafts 6 and 7 The drive of the pressure spindles 25 a takes place according to

are by an engageable and disengageable clutch 8 Fig. 3 by a motor 35 with two-sided, one-

connectable to each other. The worm shaft 7 is 30 hand on gears 36,37 on the worm shaft 6 a

possibly connected to the pressure spindle 25 a via a reduction gear and the non-rotatable

the drive motor 9 connected in a geared manner. dene worm gear 26 a and on the other hand via a

The roll stand 1 simultaneously rolls two clutches 38, which can be engaged and disengaged, and an interchangeable cores 10 and 11. Along curved guide gears 39, 40, 41 on a worm shaft la and sheets 12, 12 ', the cores 10, 11 rotate - 35 a non-rotatably on the pressure spindle 25 a seated points 13 pivotable, U-shaped curved grooves worm wheel 26 a. Between the worm shafts 14, 14 'and of these further, curved guide 6a, la , an engageable and disengageable clutch 42 is provided for sheets 15, 15' and the calibers 10b, Ub des. When the motor 35 is in operation, roll stand 2 is fed to each of them. After the wires 10, 11 have switched only one of the clutches 38, 42 while the roll stand 2 has been tapped, the other 40 is released.

the U-shaped grooves 12, 12 'in the plane of The regulation of the loop of the core 10 takes place

Sling tables 16, 16 'lowered so that, in turn, depending on the control fields 17,

loops 18 formed by the rolling stock cores 10, 11 by changing the speed of the drive

can zoom in or out. The size of the structure upstream or downstream of the framework la

The loop formed by the vein 10 is armored by the 45 while regulating the loop of the vein

Control fields 17, 18 tapped. If the loop 11 runs as a function of the control errors 19, 20

on the control field 17, it is known by changing the position of the roller 3 a against-

Control organs, the speed of the rollers 3, 4 of the roller takes place over the roller 4 a. The roller 3 a

scaffolding 1 reduced. When the loop runs up around the pivot point B formed by the vein 10

on the control field 18, the speed of the rollers 3.4 50 with respect to the position of their rolling surfaces of the vertical

of the roll stand 1 increased. It runs from the plane to the roller 4 a adjusted. But this means.

Vein 11 formed loop between its associated with that when lifting that associated with the vein la

Neten control fields 19, 20. It runs on the normal bearing point of the roller 3 α in the ratio of the distance

fields 19, 20, so is known from the pivot point B a lowering of the

Control elements of the motor 9 for the roll adjustment 55 core 11 facing away from the bearing point of the roll 3 a im

turned on the roll stand 1 after the ratio of the distance from the pivot point B

Coupling 8 has been released so that it takes place. As a result, the core 10 remains in its transverse

Motor 9 only the worm shaft 7 is actuated and the cut is also reduced when the wire 11 is corrected

a one-sided adjustment of the roller 3 on the side unchanged.

takes place on which the wire 11 runs. Depending on whether the 60 The usual adjustment of the roller 3 α takes place from

Loop on the control field 19 or 20 runs up, the motor 35 via the gearbox 36, 37, the

the roller 3 further turned on or released, i.e. the worm shafts 6 a, 7 a and the worm wheels 26 a

the vein 11 rolling caliber Hb is smaller on the pressure spindles 25 a. The clutch 42 is then

or larger. switched while the clutch 38 is released. Intended to

However, since the center of gravity A of the roller 3 provides for a correction of the stitch decrease in the core 11 in FIG.

Bearings on the side facing away from the core 11 are assumed, the coupling 42 is released,

is achieved by changing the position on one side while the clutch 38 is engaged. The drive

the roller 3 also at a distance from the pressure spindles 25 a then takes place on the one hand

the motor 35 via a gear 36, 37 on the worm shaft 6 a in one direction and on the other hand from the motor 35 via a change gear 39, 40, 41 on the worm shaft la in the opposite direction. The gears 36, 37 and 39, 40, 41 are interchangeable and their translation is matched to the pivoting movement about the pivot point B.

In Fig. 6 and 7, a further embodiment is shown according to the invention. For the regulation of the rolling stands Ib and 2 b , a device is also provided which transmits the change in the speed of the drive motor 30 α of the rolling stand upstream or downstream of the rolling stand in such a way to the adjusting motor 35 of the rolling stand Ib that it is turned on by counter-rotating the roller 3 b changes the roll gap in the caliber Ub carrying the vein 11 in such a way that in the vein 11 the state that existed before the change in speed is maintained. The speed of the motor 30 a is regulated as a function of the control fields 17, 18, for example via the grid of a rectifier (not shown) or via the field 29 a, as soon as the loop of the wire 10 has run into one of the control fields 17, 18. Once the control operation of the motor 30a is triggered, switches a switching member 50 at the same time the motor 35 a, and controls the rotational speed of, for example, via the motor box 51 to the extent in which the rotational speed of the engine increases 30 a or is reduced, whereby the speed change of the motor 30 a is compensated for by correcting the adjustment of the roller 3 b with respect to the roller 4Zj with respect to the core 11. The adjustment of the roller 3 b takes place in the manner already described, in that it is adjusted about the pivot point B in the vertical plane.

Instead of the loop beds and loop guides shown, other known loop guides can be used. If, for example, loop guides are used in which the rolling stock is first passed in a straight line through the loop guide and then only transferred into the loop, it is necessary that after a wire has been pierced in the roll stand 2, care must be taken to create a loop. For the core 10, this can be achieved in a known manner by increasing the speed of the rolls of the roll stand 1 or by reducing the speed of the rolls of the roll stand 2. If this process has to be carried out when the wire 11 is still running, an excessive growth of the loop formed by the wire 11 may have to be prevented by the appropriate control. If loop formation has to be brought about in the core 11, this can be achieved by temporarily changing the position of the rolls on one of the roll stands 1 or 2. The corresponding control pulses after the new tapping in the wires 10 or 11 can be given in a known manner.

Claims (3)

PATENT CLAIMS: 1. Roller train for the simultaneous rolling out of fine iron and wire in two veins with a drive for the rolling surfaces of both veins, whereby the rolling surfaces for both veins are formed by a roller with spaced calibers for the veins to be rolled out at the same time and depending on the size the loop formed by one vein between two successive rolling points, the speed of the rolling parts for both veins and, depending on the size of the loop formed by the other vein, the mutual distance of the rolling surface rolling this vein is changed by adjusting a rolling surface around a pivot point Patent application Sch24151 Ib / 7a, characterized in that through the loop of the pitch regulating wire (11) the speed of the rolling stands upstream or downstream of it in the ratio of the distance between the speed regulating wire (10) and that of the pitch regulating wire (11) from the pivot point (A) the rolling mill to be employed surface (3) is also regulated. 2. Roller train for the simultaneous rolling out of fine iron and wire in two veins with a drive for the rolling surfaces of both veins, the rolling surfaces for both veins being formed by a roller with spaced calibers for the veins to be rolled out at the same time and depending on the size the loop formed by one vein between two successive rolling points, the speed of the roller parts for both veins and, depending on the size of the loop formed by the other vein, the mutual distance between the rolling surfaces to be rolled out this vein is changed by adjusting a rolling surface through a pivot point according to patent application Sch 24151 Ib / 7 a, characterized in that the pivot point (B) of the rolling surface (3 a) to be adjusted lies in the caliber of the speed-regulating wire (10). 3. Rolling mill according to claim 2, characterized in that the pitch of the rolling surface (3 ä) for the pitch regulating core (11) is also regulated by the loop of the speed-regulating wire (10). 1 sheet of drawings © 109 618/190 6.61