EP1569765B1 - Coiler device for rolled strip - Google Patents

Abstract

The coiler includes a driven trough-roller (1) for rotating a coil during coiling in or out. A roller train is arranged before or after the coiler. The trough-roller has an elastically-deformable sleeve-ring (4). The working surface (3) of the trough-roller preferably comprises a series of adjoining sleeve-rings arranged so that the coil is subjected to an even pressure over its entire longitudinal extent.

Description

The invention relates to a reel device for a rolled strip, comprising at least one drivable trough roller for rotating a coil when winding or unwinding a rolled strip and with the reel upstream or downstream roller table.

Reelers with dump rollers are usually used in the outlet part of a hot strip, or during hot strip transport. The trough roller has the task of turning the coil with its drive and a pair of scissors which is arranged at right angles to the federal transport, to drive the rolled strip. At the scissors the coil is potted and samples are cut from the rolled strip.

Previously used in the prior art trough rollers are formed with fixed Durchmaßermaßen and formed for an approximate radius adjustment with a hollow contact surface for the coil. When turning spherical coils, this leads to markings on the coil circumference due to line contact roll effects. Also, the known designs of Muldenrollen are very stiff by their dimensions and allow no deflection of the role.

The document DE-OS 24 127 47 describes a stripping and straightening systems for bundles of hot-rolled sheets with a pair of support rollers for the coils and a holding device for the sheet metal end, with which the sheet is removable via a counterbending roller.

The two support rollers and arranged between these lifting table are mounted on a movable coil car. The Bundwagen is with a detachable against the stationary holding device Abziehwagen coupled. The Abziehwagen carries an additional drivable bearing roller, which forms with the her closer lying bearing rollers of the Bundwagens another Auflagerrollenpaar. On both cars before or behind the support rollers are each provided with an adjustable in their position support roller, of which the mounted on Abziehwagen also serves as a counter-bending roller.

The document DE 197 45 653 A1 describes a Abhaspelvorrichtung for unwinding a wound to a federal government tape, with a reel and the reel downstream reel, the roller table a base frame with a lower drive and straightening roller and a top frame with an upper drive roller with a having upper drive shaft and an upper straightening roller. The attachment frame has on its side facing the Abhaspel a Bundöffner for opening the collar, the attachment frame is zubewegbar on the Abhaspel.

Furthermore, the Bundöffner is pivotable about a pivot axis between an operating and a rest position back and forth.

The document DE 198 03 091 A1, which forms the basis for the preamble of claim 1, discloses an operating method for a belt-transfer unit with a take-up station, each having an inlet and outlet side take-up roll and a take-off station, each with an inlet and outlet side take-off roll, wherein a band is wound up in the winding station to form a coil, or a collar is placed on the take-up rolls and wherein the collar is worn during winding or after placement of the take-up rolls,
For unwinding, the waistband is transferred to the unwinding station, and after transfer, the waistband is carried by the unwinding rolls during unwinding. To transfer the federal winding stations are moved toward each other, the inlet-side take-up roll is raised.

The according to the operating method intended Bundumsetzanlage with a winding station and each with an inlet and outlet side take-up reel and an unwinding station with an inlet and outlet side Abwikkelrolle is designed so
that the winding stations are moved toward each other and
that the inlet-side take-up roll is liftable.

The document DE-30 31 825 C2 describes an apparatus for transferring coil-wound pre-rolled hot metal strips from a winding station associated with a rough rolling mill to an unwinding station associated with a finishing train. The transfer device consists of a transverse to the direction of movement of the belt on a track movable vehicle, which has an approximately vertical in working position arm with a laterally projecting support surface for the federal government. The arm is part of a arranged on a basic frame shell. To allow for picking up and putting down the waistband, the route is adjustable. The track for the vehicle is laid in the rolling mill under the corridor. The upper part of the vehicle consists of articulated levers and is movable in the collapsed state under the unwinding station of the finishing train.

Based on the aforementioned prior art, the present invention seeks to provide a new design solution for the design of the trough roller a reel device, so that they can better fit a spherical coil and provides good support over the coil width, thus marking marks, especially at thin tapes are safely avoided.

To solve the problem is made according to the invention in a reel device with at least one drivable trough roller according to the preamble of claim 1 use of the measure that the trough roller is formed with at least one elastically movable shroud.

For further formation of the trough roller is proposed that the working surface of the trough roller is formed with a series of adjoining shrouds surrounding a core of the trough roller with diameter difference, supported by means against the shrouds from inside spring-loaded support body so evenly that they Contact surface of the trough roller with the coil over its entire longitudinal extent subjected to uniform system pressure.

A further embodiment of the reel device according to the invention with a trough roller provides that the support bodies are cambered in adaptation to the inner circle of the shroud rings at their contact surfaces.

Next, the invention provides that each support body is backed with a package of disc springs with a predeterminable biasing force. It can be provided that the support body are clamped with prestressable spring force in the shrouds.

In order to provide bumpless transitions of the shroud rings, it is further provided by the invention that adjoining shroud rings connect to the adjacent shroud rings with an oblique grating, in particular in the case of shrouds with a diameter difference.

According to a further embodiment of the trough roller, the running surfaces of the shroud rings may be formed with a small crowning, which does not exceed the measure of the diameter difference.

The reel device is further developed in that in each case two trough rollers which can be arranged in a predeterminable, axially-parallel spacing cooperate with one another to form a trough-shaped recess between them for receiving the cylindrical load of the coil. At least one of these trough rollers is equipped with a rotary drive. The trough roller advantageously comprises a massive central shaft, on the shaft a middle Ring for receiving spring-loaded support body and a shroud with an outer race for the load bearing in the form of a coil.

Finally, the trough roller of the reel device has a contact surface which forms on rolling on a coil, in particular a concave contact surface, onto which the usually spherical circumference of the coil can be automatically adapted by means of the elastically resilient jacket rings.

Figur 1

den Schnitt durch die Muldenrolle in einer Ebene senkrecht zur Rotationsachse;

Figur 1a

in Vorderansicht zwei im Abstand angeordnete Muldenrollen mit der Lastaufnahme zweier ungleich großer Coils;

Figur 1b

die Muldenrolle in Seitenansicht mit angedeuteter Lasteinwirkung;

Figur 2

die Muldenrolle in einer Teil-Ansicht, und darunter die dargestellten Muldenrolle im Teil-Schnitt einer Schnittebene parallel zur Mittellinie.

Further details, features and advantages of the invention will become apparent from the following explanation of an embodiment schematically illustrated in the drawing. Show it:

FIG. 1

the section through the trough roller in a plane perpendicular to the axis of rotation;

FIG. 1a

in front view, two spaced trough rollers with the load receiving two unequal sized coils;

FIG. 1b

the trough roller in side view with indicated load action;

FIG. 2

the trough roller in a partial view, and below the trough roller shown in the partial section of a sectional plane parallel to the center line.

The synopsis of the drawings of Figure 1, 1 a and 1 b, and of Figure 2 shows that the working surface 3 of the trough roller 1 is formed with a series of adjoining shrouds 4, which surround a core 5 of the trough roller 1 with difference in diameter. By means of this core 5 against the shrouds 4 from the inside projecting, spring-loaded support body 6, the work surface 3 is supported evenly. Here, the contact line 7 of the trough roller 1 is acted upon over its entire longitudinal extent L with uniform contact pressure.

The support body 6 are cambered in adaptation to the inner circle of the shrouds 4 at their contact surfaces with the shrouds. Each of these support body is backed with a package of disc springs 8 with a predeterminable biasing force. To achieve this, the support body 6 are clamped with pretensionable spring force in the shrouds 4.

Furthermore, it is provided that the jacket rings 4 increase to compensate for an calculable or calculable according to experience, load-induced deflection of the trough roller 1 against the center in the outer diameter.

FIG. 1 shows, on the one hand, a coil 2 of large diameter and, on the other hand, a coil 2 of smaller diameter superimposed on two pulley rollers 1, 1 ', which are fixedly mounted at the predetermined spacing of their axes.

It can be seen in this representation of Figure 1 a, that the curvature of the surfaces of the coils 2, 2 'varies considerably in accordance with their diameter size. The already partially unwound coil 2 'claimed between the trough rollers 1, 1' a deeper indentation of its surface between the two rollers, while the coil 2 claimed with the much larger diameter a flatter curve shape of its surface between the two rollers 1, 1 '. Also, the contact points and the contact lines are shifted from each other.

Figure 1 b shows a side view of a trough roller 1 with uniform load distribution over its length in the longitudinal direction with individual, acting on the adjacent shrouds 4 load forces. Experience has shown that this causes a limited deflection of the trough roller 1, which has a greater effect on weight due to the full coil than in the case of the almost unwound coil. By means of the illustrated dump rollers, these differences can be compensated.

In the embodiment shown in FIG. 1a, the right-side trough roller 1 'is designed with a motor drive and shown accordingly.

Figure 2 shows that adjoin each other with a small difference in diameter shrouds 4, each with an oblique chamfering to the respective adjacent shroud 4. Also, their treads are formed with a slight crowning 9, which does not exceed the measure of the diameter difference.

Figure 2 shows in the lower sectional view clearly the internal structure of the trough roller 1 according to the invention. In this case, the shrouds 4 of the trough roller 1 comprise a massive central shaft 5. This carries a central ring 11 for receiving spring-loaded support body 6 and an outer race 12 for the load bearing.

With this design according to the invention, the trough roller 1 is achieved in a surprisingly expedient and uncomplicated manner that the trough roller also adapts to a crowned coil and provides good support over the coil width and avoids that undesirable markings can occur, especially with thin tapes.

List of reference numbers

1.

troughed roller

Second

coil

Third

working surface

4th

casing ring

5th

Core of the trough roller

6th

support body

7th

contact line

8th.

Belleville spring

9th

crown

10th

trough-shaped depression

11th

middle ring

Claims (12)

1. Coiling device for a rolled strip, comprising at least one drivable trough roller (1) for rotation of a coil (2) during coiling up or uncoiling of a rolled strip, as well as with a roller path arranged upstream or downstream of the coiler, characterised in that the trough roller (1) is formed with at least one resiliently deformable casing ring (4).
2. Coiling device according to claim 1, characterised in that the working surface (3) of the trough roller (1) is formed with a series of mutually adjoining casing rings (4), which with enclosure of a core (5) of the trough roller (1) with a diameter difference are uniformly supported by means of support bodies (6), which are spring-loaded from inside against the casing rings (4), in such a manner that they load the contact surface (7) of the trough roller (1) with the coil (2) over the entire length (L) thereof with uniform contact pressure.
3. Coiling device according to claim 2, characterised in that the support bodies (6) are constructed to be bowed at the contact surfaces thereof in adaptation to the inner circle of the casing rings (4).
4. Coiling device according to claim 2 or 3, characterised in that each support body (6) is lined at the back by a packet of plate springs (8) with presettable biasing force.
5. Coiling device according to one of claims 2 to 4, characterised in that the support bodies (6) are clamped in place in the casing rings (4) with biasable spring force.
6. Coiling device according to one of claims 1 to 5, characterised in that the casing rings (4) increase in outer diameter towards the centre of the trough roller (1) to provide compensation for a load-induced warping thereof which is computable or which is calculable according to experience.
7. Coiling device according to one of claims 1 to 6, characterised in that mutually adjoining casing rings (4) are provided with an oblique chamfering with respect to the adjacent casing rings (4).
8. Coiling device according to one of claims 1 to 7, characterised in that the running surfaces of the casing rings (4) are formed with a small dishing (9) which does not, however, exceed the amount of the diameter difference.
9. Coiling device according to one of claims 1 to 8, characterised in that each time two trough rollers (1, 1') arranged at a predeterminable, axially parallel spacing co-operate with one another for acceptance of the load of a coil (2).
10. Coiling device according to claim 9, characterised in that at least one of these trough rollers (1) has a rotary drive.
11. Coiling device according to one of claims 1 to 10, characterised in that the trough roller (1) comprises a solid central shaft (5), a centre ring (11), which is on the shaft (5), for reception of spring-loaded support bodies (6) and circumferential rings (4) with an outer running ring (12) for acceptance of the load.
12. Coiling device according to one of claims 1 to 11, characterised in that the contact surface (7), which forms during rolling along a coil (2) and which is, in particular, concave, is automatically adaptable by means of the elastically resilient flexible casing rings (4) to the usually spherical circumference of the coil (2).

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