EP0881005A2 - Method and device for tilting rolled sections, for example billets, about their longitudinal axis - Google Patents

Abstract

The method concerns tilting a rolled section (30) about its longitudinal axis. The apparatus includes a frame which can be moved across a roller conveyor (29), transporting the section, and has clamping rolls (1, 2) installed in a roll head (11). The roll head is pivoted about an axis parallel to the longitudinal axis of the section, and has a pivot drive (11). During tilting, the section (30) held by the rolls (1, 2) is lifted above the transport plane X-X of the roller conveyor (29). The movable clamping roll (1) is actuated using a cylinder unit (3). The height of the roll head (11) can be altered using a cylinder unit (26) joined to a lever (25).

Description

The invention relates to a method for edging or spike edging of rolled profiles, for example billets, about their longitudinal axis, using a device comprising a frame that is transverse to one Billet transporting roller table is slidable and one with Pinch rollers equipped for clamping a stick to one roller head pivotable parallel to the longitudinal axis of the stick with swivel drive, the stick during its longitudinal transport recorded and before task in a following station at a predetermined Edge angle folds. The invention further relates to a device for edging or spike edging of rolled profiles, in particular to carry out the method according to the invention.

It is when processing billets into fine iron or wire often required, one from an oven via a roller table escaping billets in a so-called skewer position in the caliber of the first scaffolding of the fine iron or wire mill. To achieve this, it is usually between the oven and the first Scaffold arranged a device for spike edging, the multiple is also referred to as a stick-up device.

Such a known device has, for example, two roles are rotatably mounted in a frame. There is usually a role stored stationary, while the other role trained hired can be. Furthermore, the frame is together with the two roles by means of a special drive in the plane of the two roller axes can be swiveled through an angle of 45 °. Before running in Sticks in this device will now be the adjustable role so far lifted off the fixed roll so that the stick is unimpeded can get between the two roles. As soon as the stick is between the two roles, the adjustable role lowered again so that the stick passed between the rollers is. By switching on the drive assigned to the frame now the frame is pivoted through an angle of 45 ° and the Bludgeon placed in a skewed edge position by the two rollers, in that of the billet in the first scaffolding of the fine iron or wire mill can break in.

DE-OS 25 33 287 describes a device for spike edging of billet-shaped rolling stock, with two parallel to each other at a distance arranged adjusting rollers, of which an adjusting roller is stationary and the other adjusting roller is adjustable. At the The rolling stock is passed through the pair of rollers by means of truncated cone rollers tipped over an edge, with the incoming stick the adjustable roller against the restoring force of a spring in a Pass position presses. This has the disadvantage that the conveyed in rolling heat by the truncated cone rollers in the skewed edge position Rolled material deformed on opposite edges and thus is damaged.

In DE-AS 1 028 960 a gripping edge is described, the Gripping jaws held in a guide parallel to each other and against the rolling stock can be adjusted, the guidance being about the edge axis pivotally arranged in a carriage movable transversely to the rolling direction is. The tour extends on both sides of the edged axis and is continuous, which means that the gripping jaws by themselves Known clamping device attacking them adjustable against each other and together with clamping devices over the entire management area are freely movable. If the position is asymmetrical, this will be Rolled material centered with the guide, with an impermissible bending stress cannot be ruled out. By clamping on both sides of the rolling stock can lead to local deformations leave visible traces during further processing. in the the rest of the device is comparatively complex with a Large number of individual elements built up and therefore in the event of Tinder and other contaminants during the rolling stock transport prone to failure and requiring maintenance. An edge angle of more than 45 ° cannot be achieved with this device.

DE-OS 27 42 439 describes a further device for edging or Knit edges of billets known, with against rolling stock surfaces adjustable pairs of gripping devices, for example pairs of rollers, preferably between the furnace and the first stand of a rolling mill. The gripping device is attached to one end of a pivot lever, whose pivot axis lies in the longitudinal axis of the rolling stock and whose at least two pivot points via parallel linkages with two or several other links are pivotally connected, whose Swivel axes in a common plane with the longitudinal axis of the rolling stock are arranged, the parallel linkages parallel to this plane lie. The disadvantage of this device is that after Swing repositioned in the roll stand must be what a lifting height adjustment and other displacement devices required. Those provided in a parallelogram arrangement Swivel levers with, for example, eight joint arrangements result in one overall complex design, with this device also Bending a stick by more than 45 ° is not feasible.

Finally, from DE-OS 1 527 714 an edging device for Rolling stock is known in which gravity with clamping force via a mechanism is coupled, with which an inadmissible opening of the clamping roller should be avoided during edging. This has the consequence that with heavy rolling stock the clamping force is increased, which in the consequence excessive surface pressure and local deformation of the rolling stock can lead.

The present invention is based on the aforementioned prior art the task is based on a method and a device of the beginning mentioned type to improve significantly while doing the rolling to pivot a fixed point of his profile, thereby turning a repositioning or avoiding movement in the rolling mill, in addition, the rolling stock against a fixed stop defined force to clamp on one side, thereby local deformations or to prevent deflection of the rolling stock and finally the construction of the canter required for this should be special simple and consequently wear-resistant and at compact design, the use of additional rolling fittings on Make roll stand redundant. And beyond that, there should be an edging be feasible up to an edge angle of at least 135 °.

To solve the problem with the method according to the invention suggested that the roller head the between its pinch rollers guided billets during the folding process over the transport level of the roller table. In this way, on the one hand, when folding from more than 90 ° enables an edge angle of up to 135 ° and above furthermore damage or deformation or bending of the Rolled goods avoided.

With great advantage, the method according to the invention provides that at least one pinch roller is driven in rotation by a motor and thereby the transport movement of the stick on the roller table is supported; this is done by directly flanging one Hydraulic motor, for example, to the upper pinch roller.

The method provides that the roller head from its base position by at least 135 ° and preferably by one with an edge of the billet coincident pivot point is pivotable.

The measure can be used very advantageously, that the operational flow using a control unit is carried out automatically.

• daß zum Spannen und Entspannen der bewegbaren Klemmrolle ein Hydraulikaggregat vorgesehen und am Rollenkopf angeordnet ist;
• daß der Rollenkopf an einer mittels eines Hydraulikaggregates heb- und senkbaren Schwinge mit relativ zur Transportebene des Rollgangs veränderbarer Höhenlage angeordnet ist; und
• daß der in Führungsrollen in einer Kreisringführung geführte Rollenkopf einen von Hydraulikaggregaten gebildeten Schwenkantrieb aufweist.

A device for edging or spike edging of rolled profiles, for example billets about their longitudinal axis, comprising a frame with means for displacing transversely to a roller table which transports the billets and which has a roller head equipped with pinch rollers for clamping a billet and with a swivel drive a pivot axis parallel to the longitudinal axis of the stick can be pivoted,

• that a hydraulic unit is provided for tensioning and relaxing the movable clamping roller and is arranged on the roller head;
• that the roller head is arranged on a rocker arm which can be raised and lowered by means of a hydraulic unit and which has a height position which can be changed relative to the transport plane of the roller table; and
• that the roller head guided in guide rollers in a circular ring guide has a swivel drive formed by hydraulic units.

An embodiment of the device provides that the swivel drive with two that can be connected by a joint to form a kinematic unit Hydraulic units is formed, of which the one on Frame immovably arranged with its hinge Piston rod head in a linear guide transverse to the swivel axis the roller head is guided, while the other hydraulic unit hinged on the one hand and on the other hand on the roller head and between the two articulation points.

Further advantageous embodiments of the device according to the Invention are according to the features of subclaims intended.

Figur 1

eine Vorrichtung zum Kanten oder Spießkanten von Vierkantknüppeln, in Seitenansicht und teilweise im Schnitt;

Figur 2

die Kantvorrichtung gemäß Fig. 1 in Frontansicht und im Schnitt;

Figur 3

in Seitenansicht und im Schnitt einen Rollenkopf;

Figur 4

einen Rollenkopf in geänderter Konstruktion, ebenfalls in Seitenansicht und teilweise im Schnitt;

Figur 5

in Seitenansicht eine Kantvorrichtung mit zu beiden Seiten des Rollenkopfes angeordneten Zentrier- bzw. Verschiebeeinrichtungen;

Figur 6

die Zentrier- bzw. Verschiebeeinrichtungen in anderer Position relativ zum Rollgang, ebenfalls in Seitenansicht.

Details, features and advantages of the invention result from the following explanation of an exemplary embodiment schematically illustrated in the drawings. Show it

Figure 1

a device for edging or skewed edges of square billets, in side view and partially in section;

Figure 2

the edging device of Figure 1 in front view and in section.

Figure 3

in side view and in section a roller head;

Figure 4

a roller head in a modified construction, also in side view and partly in section;

Figure 5

a side view of an edging device with centering and displacement devices arranged on both sides of the roller head;

Figure 6

the centering or displacement devices in a different position relative to the roller table, also in side view.

Fig. 1 shows an overview of the entire device for edging or Spike edges of a stick 30. The device comprises a frame 20 with a hydraulic unit 19 for moving transversely to the Billet 30 transporting roller table 29, the frame 20 a with pinch rollers 1, 2 for clamping a stick 30 and with one Swivel drive 11 equipped roller head 10. The one pivot axis parallel to the longitudinal axis of the stick 30 preferably around 135 ° swiveling roller head has a fixed pinch roller 2 and a pinch roller movable to pinch the stick 30 1.

This results in a particularly compact and uncomplicated construction of the roller head 10 in that for tensioning and relaxing the movable clamping roller 1 is provided with a hydraulic unit 3 and is arranged on the roller head 10, which in cooperation a detection in the roller head 10 with the guide 5 assigned to it and clamping the stick 30 with an adjustable force effect enables.

Essential to the invention is the roller head 10 on a by means of a Hydraulic unit 26 liftable and lowerable swing arm 25 with relative to the transport level x-x of the roller table 29 variable altitude arranged. This rocker 25 is on the hydraulic unit 26 opposite end in the horizontal hinge axis 28 pivotally stored.

Furthermore, it is provided that at least the pliers-like movable Pinch roller 1 with a hydraulic motor 4 rotatably driven is.

An embodiment of the device essential to the invention results from the fact that in guide rollers 9 in a circular guide 8th guided roller head 10 formed by hydraulic units 12, 13 Swivel drive 11 has. Such a drive is straightforward, free of wear-prone elements, with commercially available Hydraulic units 12, 13 can be created and stands out by very simple and wear-free construction.

The swivel drive 11 is with two by a joint 14 to one Kinematic unit connectable hydraulic units 12, 13 formed, of which the one assembly 12 on the frame 20 immobile is arranged and formed with its hinge 14 Piston rod head 15 in a linear guide 16 transverse to the pivot axis of the roller head 10 is guided, while the other hydraulic unit 13 on the one hand on the joint 14 and on the other hand on the roller head 10 articulated between these two articulation points 14, 14 ' is led. In the dash-dotted drawing of Fig. 1 is the position of the hydraulic units 12, 13 during a pivoting movement of the roller head 10 by 135 ° around the pivot point D.

1 further shows that the frame 20 with rollers 21 horizontally along a travel rail 22 on the foundation 7 is movable and with guide rollers 23 along one with the running rail 22 at a vertical distance parallel guide rail 24th is feasible, and that a hydraulic unit 19th assigned.

The uncomplicated design of the roller head 10 also makes it possible Advantage that the pinch rollers 1, 2 interchangeable and, for example, against Profile rollers are interchangeable.

A very compact and uncomplicated construction of the roller head further results from the fact that this is an annular Guide bar 8, with which it in one with the rocker 25th connected and guide rollers 9 supporting backdrop 6 by 135 ° is pivotally guided. With this arrangement there is still extremely simple assembly and disassembly of the roller head, e.g. in the event that the pinch rollers 1, 2 exchanged and against Profile roles are to be replaced.

Fig. 2 shows the arrangement of the device from a front view and shows particularly impressively the compact arrangement of the individual elements and their interaction. Because here the same elements are designated with the same reference numbers, one is unnecessary Repetition of their names.

3 and 4, a roller head 10 is each clearly Representation shown. It has an annular guide web 8 with which it is connected to the rocker 25 in a Guide rollers 9 supporting backdrop 6 is pivotally guided by 135 °. This construction is uncomplicated and compact. she is further characterized by the fact that all individual parts quickly can be assembled and disassembled, so that in the event of an inspection or overhaul the work required for this with a least possible effort and manpower as well as Costs are feasible.

An embodiment essential to the invention is particularly noteworthy characterized in that the upper pinch roller 1 with its Drive motor 4 and the hydraulic tensioning unit 3 inclusive whose guide 5 is a closed assembly as a functional unit form with the roller head 10 by means of a pivot axis 17 limitable swivel range is articulated. This results in the Possibility that this assembly the inclined shown in Fig. 3 Assumes position that is exemplary for easy clamping an asymmetrical profile of a stick 30 is used. Farther 3 again clearly shows the possibility of edging the Bludgeons 30 around the edge point D with 135 °.

An embodiment of the roller head 10 is shown in FIG between this and the backdrop 6 supporting it a locking element 18 can be arranged. This prevents, for example, when force is applied by the stick 30 an unintentional pivoting the roller head with its swivel guide 8 in the guide rollers 9. It is further apparent from Fig. 4 that the guide rollers 9th can be quickly assembled with the link 6 through thru axles 27 or - are removably connected.

5 and 6 that the roller head 10th in approximately radial position to its pivot axis and to it laterally offset two driven by hydraulic units 33, 34 Sliders 31, 32 are assigned, which the function of the roller head 10 Support when starting and stopping a stick 30. The dash-dotted line y-y corresponds to the median plane of the Roller tables 29. When retracting the roller head 10 or the folding device with the roller head 10 against a stick 30 accordingly 5 shows the slide 32 as a centering device a stop for the stick 30, on the other hand by the slider 31 is kept in a predetermined position limit. The measure can be used as shown in FIG. 6 be made that the centering or displacement elements 31, 32 without Gripping edge function used to correct the direction of a stick will. The displacement elements 31, 32 are in guides 35, 36 horizontally movable.

• Kompakte flache Bauform, hierdurch reduzierte Investitionskosten sowie geringerer Aufwand für das erforderliche Fundament, somit unterstützte Transportbewegung des Rollgangs, insbesondere bei Spießkantlagen;
• signifikant vereinfachte Konstruktion und Medienführung, insbesondere durch hydraulische Betätigung aller Funktionselemente, daher verschleißfreies Arbeiten auch unter erschwerten Betriebsbedingungen;
• leichte Demontierbarkeit der Funktionsgruppen, bspw. durch steckbare Lauf- bzw. Stütz- bzw. Führungsrollen;
• lösbare Klemmverbindung des Rollenkopfes zum Einsatz von unterschiedlichen Klemmrollen, bspw. Profilrollen;
• Einsatz eines speziell mit einer einheitlichen Baugruppe ausgebildeten und für unterschiedliche Laufrollendurchmesser geeigneten Rollenkopfes, wodurch eine Anpassung einer Rolle an unsymmetrische Profile ermöglicht wird;
• Automatisierbarkeit des Bewegungsablaufes während des Kantvorganges bis 135° Kantwinkel;
• festliegender Drehpunkt auf der Oberkante der Rollgangsrolle.

Overall, the following advantages are to be emphasized in comparison with the prior art in the gripping edge according to the invention:

• Compact flat design, thereby reduced investment costs and less effort for the necessary foundation, thus supported transport movement of the roller table, especially in the case of spike edging;
• Significantly simplified construction and media management, in particular through hydraulic actuation of all functional elements, therefore wear-free work even under difficult operating conditions;
• easy disassembly of the functional groups, for example by pluggable running or supporting or guiding rollers;
• releasable clamping connection of the roller head for the use of different clamping rollers, for example profile rollers;
• Use of a roller head specially designed with a uniform assembly and suitable for different roller diameters, which enables adaptation of a roller to asymmetrical profiles;
• Automation of the movement sequence during the folding process up to 135 ° folding angle;
• fixed pivot point on the upper edge of the roller table roller.

Reference list

1

Pinch roller

2nd

Pinch roller

3rd

Hydraulic unit

4th

Drive motor, hydraulic motor

5

Guided tour to [3]

6

Backdrop

7

foundation

8th

Circular ring guide with web

9

Leadership roles

10th

Roller head

11

Swivel drive

12th

Hydraulic unit

13

Hydraulic unit

14, 14 '

joint

15

Piston rod head

16

Linear guide

17th

Swivel axis

18th

Locking element

19th

Hydraulic unit

20th

frame

21

Casters

22

Track

23

Leadership role

24th

Guide rail

25th

Swingarm

26

Hydraulic unit

27

Thru axles

28

Swing joint axis

29

Roller table

30th

stick

31

Slider

32

Slider

33

Hydraulic unit

34

Hydraulic unit

35

guide

36

guide

Claims (14)

Method for edging or spiked edges of rolled profiles, for example billets (30) about their longitudinal axis, using a device comprising a frame (20) which can be moved transversely to a billet (30) transporting roller table (29) and one with pinch rollers ( 1, 2) equipped for clamping a billet (30), about a pivot axis parallel to the longitudinal axis of the billet pivotable roller head (10) with swivel drive (11), the billet (30) detected during their longitudinal transport and before task in a subsequent station by a predetermined Edging angle,
characterized,
that the roller head (10) raises the billet (30) guided between its clamping rollers (1, 2) during the folding process over the transport plane (xx) of the roller table (29). Method according to claim 1,
characterized,
that at least one pinch roller (1) is driven in rotation by a motor and supports the transport movement of the stick (30) on the roller table (29). The method of claim 1 or 2,
characterized,
that the roller head (10) can be pivoted from its base position by at least 135 ° and preferably about a pivot point (D) coinciding with an edge of the billet profile. Method according to one or more of claims 1 to 3,
characterized,
that the functional sequence is carried out automatically using a control unit. Device for edging or skewing edges of rolled profiles, for example billets (30) about their longitudinal axis, comprising a frame (20) with means for displacing transversely to a roller table (29) which transports the billets (30) and which has one with pinch rollers (1, 2) for clamping a billet (30) and having a roller head (10) equipped with a swivel drive (11) which can be pivoted about a swivel axis parallel to the longitudinal axis of the billet (30), in particular for carrying out the method according to the invention,
characterized, that a hydraulic unit (3) is provided for tensioning and relaxing a movable clamping roller (1) and is arranged on the roller head (10); that the roller head (10) is arranged on a rocker arm (25) which can be raised and lowered by means of a hydraulic unit (26) and which can be changed in height relative to the transport plane of the roller table (29); and that the roller head (10) guided in guide rollers (9) in a circular ring guide (8) has a swivel drive (11) formed by hydraulic units (12, 13). Device according to claim 5,
characterized,
that the swivel drive (11) is formed with two hydraulic units (12, 13) which can be connected to a kinematic unit by means of a joint (14), one of which (12) on the frame (20) is arranged immovably with its joint (14) Piston rod head (15) is guided in a linear guide (16) transversely to the pivot axis of the roller head (10), while the other hydraulic unit (13) is articulated on the one hand on the joint (14) and on the other hand on the roller head (10) and between the two articulation points (14, 14 ') is guided in a positionally movable manner. Apparatus according to claim 5 or 6,
characterized,
that the frame (20) can be moved horizontally with rollers (21) along a running rail (22) and with guide rollers (23) along a guide rail (24) parallel to the running rail (22) at a vertical distance from each other, and that a hydraulic unit can be used to drive it (19) is assigned. Device according to one or more of claims 5 to 7,
characterized,
that at least one pinch-type movable pinch roller (1) is designed to be rotatably drivable with a hydraulic motor (4). Device according to one or more of claims 5 to 8,
characterized,
that the pinch rollers (1, 2) of the roller head (10) are interchangeable and, for example, interchangeable with profile rollers. Device according to one or more of claims 5 to 9,
characterized,
that the roller head (10) has an annular guide web (8) with which it is pivotably guided in a link (6) connected to the rocker (25) and carrying guide rollers (9) by at least 135 ° with respect to the vertical axis. Device according to one or more of claims 5 to 10,
characterized,
that the upper pinch roller (1) with its drive motor (4) and the hydraulic tensioning unit (3) including its guide (5) form a closed assembly as a functional unit which is articulated on the roller head (10) by means of a pivot axis (17) with a limited pivot range . Device according to one or more of claims 5 to 11,
characterized,
that a locking element (18) can be arranged between the roller head (10) and the backdrop (6) supporting it. Device according to one or more of claims 5 to 12,
characterized,
that the guide rollers (9) with the link (6) through quick-release axles (27) can be quickly assembled or disassembled. Device according to one or more of claims 5 to 13,
characterized,
that the roller head (10) in approximately radial position to its pivot axis and to it laterally offset two associated with hydraulic units (33, 34) drivable slide (31, 32) are assigned, which the function of the roller head (10) when moving up and down a stick (30) support or, if necessary, only work as a slide without the edging device being in the working position.

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