WO2013189541A1

WO2013189541A1 - Deburring device for removing burr on a slab

Info

Publication number: WO2013189541A1
Application number: PCT/EP2012/061944
Authority: WO
Inventors: Alexander Deica; Wigbert Buhr; Jürgen Rung
Original assignee: Gega Lotz Gmbh
Priority date: 2012-06-21
Filing date: 2012-06-21
Publication date: 2013-12-27
Also published as: CN103619509A

Abstract

The invention relates to a deburring device for removing burr (2) on a slab (3) comprising a central shaft (1) and a plurality of pairs of rod holders (4) which are each mounted spaced apart from one another on the central shaft (1). Each of the rod holders (4) is shaped as a triangular plate. The rod holders (4) forming a pair are offset by 60° with respect to the lateral faces of said rods. Each of the rod holders (4) has over the entire deburring width a plurality of rod segments (6) which are disposed therebetween and can be removed laterally or radially outwards and which extend parallel to the central shaft, wherein on the rod segments (6) between the triangular rod holders (4) in each case a plurality of individually removable and replaceable hammers (7) are disposed adjacent to one another so as to wobble. Each hammer (7) has a connecting part which opens and closes the hammer (7) by unlocking. Furthermore each hammer (7) can have a hammer head which has an increased mass or volume and is remote from the fastening point on the rod segment (6).

Description

Detergent device for removing a beard

on a slab

description

The invention relates to a Entbartervorrichtung for removing a resulting in oxy-fuel cutting beard on a slab, with a motor-driven central shaft and a plurality of pairs of rod receptacles, which are each mounted spaced apart on the central shaft.

When flame cutting with oxygen arise at the two lower flame cutting edges, ie at the beginning and at the end of each separated from the cast strand slab by the running and cooling slag more or less large beards of a mixture of brittle iron oxides and hard to elastic steel. In part, these beards hang low from the edges or form beads on the edges of the workpiece bases. The presence of these beards interferes with the further processing and transport of the slabs.

In general, two cutting torches are provided for the slabs, so that the burning can be performed faster. The Entbarter with the hammers extends over the entire width of the slab with the largest width. However, since the slabs have different widths, the deterrent's hammers are in the middle

Entbarterbereich stronger and more frequently stressed than in the lateral, so at the middle of each because right and left adjoining areas. As a result, the hammers of the Entbarters are subject to higher wear in the central region than in the lateral regions of the respective slab. Thus, with smaller slab widths, the outer areas of the Entbarters are less used than in the middle area. The wear in the middle region of the slab is still increasing in the area in which the two burners overlap, since there forms a harder cutting bit.

There are, therefore, a number of methods to remove the beards from the slabs as soon as possible after flame cutting, by melting or burning, by hand blasting with a manual oxygen burner or oxygen burner, by hand-chopping or chipping or knocking, knocking, shearing with machines equipped with hammer, chisel or shaving blade-like tools.

An effective detacher for removing a cutting bit from a continuous slab without a stop in the ^{rolling ¬} gang a continuous casting is a Rotationsentbarter with a fast-rotating, equipped with hammers rotor. But as the beard on the slab is broken through the many small hammers often and unevenly with enormous force and speed, a very large noise. The wear is disproportionately high and often leads to Zer ^¬ disturbances of hammers. Often it also comes to fold up and thus the Nichtentfernen of beard parts. A very quick but loud deburring according to EP 654 313 Bl is done with the circumference of a fast dre ^¬ Henden roller mounted hammers that knock off the beard on the lower edge of the running over the roll slab with high impact rate in small pieces. The Entbarter has at its periphery automatically retractable hammers whose heads write an envelope when the rotor ^{rotates ¬} . The rotor has a central shaft on which a guide bearing in the form of a circular ring is attached at each end. Between these guide bearings, pairs of semi-guide bearings in the form of a semicircular ring are disposed adjacent and opposite to each other, with the pair of half guide bearings uniformly spaced in the longitudinal direction of the central shaft. In this case, one of the half guide bearings of each pair is offset in the longitudinal direction with respect to the other of the half guide bearings of the pair. The guide bearings and the Halbführungsla ^¬ ger take a joint rod unit parallel to the axis of the central shaft and carry the hammers.

High wear and necessary protection against flying beard and hammer parts and against noise are the main disadvantages in addition to the system costs. Particularly nachtei ^¬ lig that the parallel, that is coaxially le to the central WEL of Entbarters austau arranged rods from the Führungsla ^¬ like must be completely pulled out to remove all the hammers attached to the rods from the bars, and optionally individually to wear or completely to ^¬ rule. This is done at all peripherally arranged around the central shaft rods. The required

Space for the lateral extraction of the rods is usually not in the system or in the roller table of the continuous casting given so that for the hammer assembly and disassembly ever ^¬ the complete Entbarterwelle must be removed in order to carry out the Hämmerdemontage and - disassembly outside of the roller table.

It is an object of the invention to provide a Entbartervorrichtung of the type mentioned, in which selectively ge ^¬ targets the individual hammers can be exchanged by wear or for repair ^¬ turzwecken time and cost savings ^¬ nen.

According to the invention, the object is achieved in that each of the rod receptacles is disc-shaped and substantially triangular in shape and the pair forming rod receivers offset by 60 ° with their side surfaces to each other, each of the rod recordings over the Entbarterbreite a plurality of arranged between them laterally or radially having outwardly removable rod segments ^¬ run parallel to the central shaft ver, where in each case is disposed a plurality of individually removable and interchangeable hammers staggered side by side on the rod segments between the three corner-shaped rod mounts, each hammer has a connecting part, which by the hammer Unlocking opens and closes and each hammer has a mass or volume enlarged hammerhead remote from the attachment point on the rod segment.

The individual hammers arranged on the bar segments are selectively opened selectively as required, in particular if they are worn or for repair purposes, by unlocking a respective hammer associated with it Connector. The unlocking can be done in the installed state of the hammer, without an adjacent hammer in the way. After removal, a gap is created for a new hammer, which can be installed or mounted without obstructing the neighboring hammers. It can be a be ^¬ undesirables number of hammers saving time and money changed so without any bars or Stangenseg ^¬ ments have to be removed with all the hammering from the Entbartervorrichtung.

Here, the respective bar segments, on which there are worn and exchangeable hammers, individually removable, the rod segments can be removed depending on the design of the Entbartervorrichtung laterally or radially outward. It can always be dismantled or mounted with a rod segment a certain number of hammers.

To achieve the fastest possible partial disassembly or an off ^¬ replacement of the hammers just in the middle Entbarterbereich, the rod segments are flanged to the ge outwardly ^¬ oriented end portions of the disc-shaped pole receiver. In this case, individual rod segments are attached to the mutually spaced pairs of rod receptacles, ie the bar segments extend in sections between them and not consistently over the entire Entbarterbreite. Thus, the hammers can be exchanged in small and selective Entbarterbereichen. Characterized in that each of the rod receptacles is substantially triangular in shape and the pair forming rod receptacles offset by 60 ° with their side surfaces together, thus resulting in six evenly distributed around the circumference, consisting of several rod segments rods for receiving the hammers.

Optionally, more of a plurality of rod segments existing rods can be provided, then rod receptacles are necessary with a substantially polygonal shape with half the number alternately tapered side edges.

The hammer beats during operation of the Entbarters by the centrifugal force. The focus of the hammer is not necessarily in the middle of the hammer. Rather, the center of gravity can not be far away from the Stan ^¬ gensegment on which the hammer is attached. Thus, the center of gravity of the hammer should be further verla ^¬ Gert outward. Is all the more is the hammer further focus away from the rod segment, the greater the impact force against the beard and the faster the hammer comes during the period of one revolution of the central shaft of the Entbarters again fully extended in its Ar ^¬ beitsposition over. To accomplish this, more mass is concentrated at a greater distance from the bar segment so that the center of gravity of the hammer is at a greater radius to the bar segment so as to accelerate pivoting of the hammer to its working position. For this purpose, the upper part of the hammer, ie the hammer head, is made large-volume by Massenver ^¬ magnification. This has the hammer the tendency to quickly return to its working position for the next revolution of the shaft after one revolution of the central shaft.

According to a further embodiment of the Entbartervorrichtung each hammer is formed substantially in two parts, namely a hammer body and a connecting part, which is detachably or pivotally mounted thereto from the hammer body. Here, the formed ver ^¬ Thematic connecting part as a bracket and, where appropriate, ^¬ be lockable and detachable with security elements with the hammer body. For example, a U-shaped bracket with two Na ^¬ sen is inserted laterally into a befindlicher in the hammer head receiving ^¬ or groove pair, so that the hammer is positioned on the rod segment.

Furthermore, the hammer has a slot in which the hammer is guided radially on the rod segment. In this case, the ^slot is found at the end of the hammer remote from the hammer head.

The single hammer is placed on the rod segment and closed with its connecting part and thus fixed in a rotatable position on the rod segment. The hammer can thus wobble by the centrifugal force during Ro ^¬ tion of the Entbarters and provided on the hammer slot. In the case of intended replacement, this does not mean that every bar segment has to be made of the rod bar provided for this purpose. each hammer for replacement is unlatched from the bar segment.

In an advantageous embodiment of the Entbartervorrich- is at the respective rod segment, which leads past the Sei ^¬ tenkanten between the vertices of the triangular rod receptacles, at least one hammer arranged on ^¬ .

As explained, two disc-shaped and substantially triangular rod receptacles are preferably provided, which are arranged with their side surfaces adjacent to each other and offset by 60 ° to each other. Due to the offset of the two pole mountings, one side edge of one of the pole mountings always dives under one pole segment of the other pole mount. Thus, a hammer can be attached to the rod segment, under which the corresponding side edge of the other Stangenauf ^¬ acquisition submerged, so that the slab region of the other rod receptacle, the non-submerged beneath the other rod receptacle,

is unbent.

Further, it may be provided that the width of the hammer is increased in order to increase the volume of the hammer body, and thus to shift the center of gravity of the hammer further outward so as the impact force against the beard magnification ^¬ filesystem and the pivoting of the hammer in the Accelerate work position. Further, the hammer may have an axis parallel to the slab FLAE ^¬ surface or a peak in the impact area.

A pointed hammer head should break up and weaken the cutting bit on the slab in its length and thus make it easier to knock it off with the flat hammers. Depending on requirements, individual pointed hammers can be offset over the entire width of the slab and used in varying quantities. The positions of the pointed hammers can also be quickly converted for different types of slab material.

Optionally, instead of several rod segments each erstre ^¬ ckende rods may be provided over the entire Entbarterbreite.

In addition, in order to protect against sticking of the bar mounts against the beards in case of misuse, e.g. during excessive startup of Entbartervorrichtung, arranged in each case in the outer region of the central shaft a thrust washer between two rod receptacles.

It is understood that the features mentioned above and are still usable after ^¬ standing to be explained features can not only in the each weils ^¬ specified combination but also in other combinations or in isolation, without leaving the scope of the present invention. The idea underlying the invention will be described in more detail in the following description with reference to exemplary embodiments which are illustrated in the drawings. Show it:

1 is a perspective view with an exploded view of individual components of a Entbartervor- direction in a first embodiment, Fig. La is a front view of the Entbartervorrichtung according to

Fig. 1,

Fig. Lb is a side view of the Entbartervorrichtung after

Fig. 1,

Fig. 2 is a perspective view with an exploded view of individual components of a Entbartervorrichtung in a second embodiment, Fig. 2a is a front view of the Entbartervorrichtung according to

2,

Fig. 2b is a side view of the Entbartervorrichtung after

2,

3 different views of hammers in an embodiment A,

4 shows different views of hammers in an embodiment B, 5 different views of hammers in a design C,

6 different views of hammers in an embodiment D,

7 different views of hammers in an embodiment E,

Fig. 8 different views of hammers in an embodiment F and

9 is a perspective view of the Entbartervorrich- device with all embodiments of the hammer according to FIGS. 3 to 8.

The Entbartervorrichtung has a central shaft 1, which is driven by a drive motor, not shown, and is provided for removing a resulting during oxy-fuel cutting beard 2 on a slab 3 shown in Fig. La. On the central shaft 1, a plurality of pairs of rod receivers 4 are respectively spaced from each other. In each case in the outer region of the central shaft 1, a starting disc 5 is arranged between two pairs of rod receiving 4.

Each of the rod receptacles 4 is disk-shaped and substantially triangular in shape. Furthermore, each rod receptacle 4 of a pair offset by 60 ° to each other, wherein they lie with their side surfaces together.

Each of the rod receptacles 4 has over the entire Entbarterbreite a plurality of between these angeord ^¬ designated laterally (Fig. 1) or radially (Fig. 2) to the outside removable bar segments 6, which extend parallel to the central shaft 1. On the rod segments 6, a plurality of individually removable and exchangeable hammers 7 are arranged in tumbling next to one another between the triangular-shaped rod holders 4.

In the embodiment of the Entbarters according to FIGS. 1, la and lb, the rod segments 6 are laterally to the outside from ^¬ accepted. For this purpose, the triangular-shaped rod receptacles 4 at each vertex on a closure member 8 which is insertable into an associated lateral groove in the rod receptacle 4 in such a way that the closure member 8 together with preferably a screw member 9 a rod segment 6 is locked to the rod receptacle 4.

In this case, closure parts 8.1 or 8.2 may be provided for rod ^segments 6 with a lateral surface 10 or without a lateral surface at their ends against rotation of the rod elements 6 in the rod receptacles 4.

In the embodiment of the Entbarters according to FIGS. 2, 2a and 2b, the rod segments 6 can be removed radially outward. In this case, the closure parts 8 are provided directly at the corner points of the triangular rod receptacles 4 by means of screw elements 9, to secure the rod segments 6 to the rod receivers 4, wherein the rod segments 6 are provided with a lateral surface 10 against rotation in the rod receptacles 4. A hammer 7 in an embodiment A according to FIG. 3 consists of an upper part 7A1 - in the variants flat and pointed - and a bracket 7A2, wherein in the upper part 7A1 in the two recesses 7A3 thrust pieces 7A4 gel with a spring-loaded ball in holes 7A5, which are in the bracket 7A2, engage. By the lateral displacement of the upper part 7A1 relative to the bracket 7A2, these parts are separated. By the lateral displacement direction, the spring-loaded ball is pressed down. During assembly, the upper part 7A1 and the bracket 7A2 are pushed together again until the resilient ball snaps into the holes 7A5. The seitli ^¬ che compressive force against the upper part of the hammer 7A1 7A must be greater than the holding force of the ball federbelaste ^¬ th pressure piece 7A4. This allows assembly and disassembly without tools.

A hammer 7 in a design B according to FIG. 4 consists of two hammer halves 7B1 and 7B2 and is inseparably connected with each other but rotatable by means of a rotation axis 7B3. A locking pin 7B5 prevented in the mounted state, the rotation of the two hammer halves 7B1 and 7B2 against each other. The locking bolt 7B5 is secured with locking rings 7B4 against lateral displacement. To disassemble the hammer 7B from the rod segment 6, a locking ring 7B4 is removed and the locking ^¬ bolt 7B5 pushed out laterally. Thereafter, the two hammer halves 7B1 and 7B2 are rotated against each other and can be removed from the rod segment 6. The assembly takes place in reverse order. Only a pair of pliers for the locking ring 7B4 and possibly a punch-through mandrel for the locking bolt 7B5 are required. A hammer 7 in an embodiment C according to FIG. 5 consists of a laterally open hammer part 7C1 with a firmly attached closure part 7C2 which, after the removal of the locking bolt 7C3, is folded outwards by turning it and releases the opening for removal of the hammer 7C. The locking pin 7C3 has a recess 7C4, in which the spring-loaded ball of a pressure piece 7C5 engages and prevents the lateral displacement of the locking pin 7C3. To remove the hammer 7C Verrie ^¬ gelungsbolzen 7C3 is pushed laterally outwardly and removed so that the closure part 7C2 can be Wegge ^¬ fold outwards and the discharge opening is free. The assembly takes place in reverse order. The lateral compressive force on the lock bolt 7C3 must be greater than the holding force of the ball of the spring-loaded pressure piece ^¬ 7C5. Thus assembly and disassembly without work ^¬ convincing can take place.

A hammer 7 in a design C according to Fig. 6 consists of a hammer top 7D1 with a fixedly mounted pivoting bracket 7D2, which is folded down after the removal of a locking bolt 7D3 by turning against each other and the opening for removing the hammer 7D releases. The locking bolt 7D3 has two

Turnings 7D4 into which a spring-loaded ball of a 7D5 pressure piece engages. To disassemble the hammer 7D, the locking pin 7D3 is pushed laterally outward and removed. The hammer shell 7D1 and the bracket 7D2 are rotated against each other, so that a

Removal opening is created and the hammer 7D can be removed. The assembly takes place in reverse order. The lateral pressure force on the locking pin 7D3 must be greater than the holding force of the ball of the spring-loaded ^¬ th pressure piece 7D5. This allows assembly and disassembly without tools.

A hammer 7 in an embodiment E according to FIG. 7 consists of an upper part 7E1 in the two bracket halves 7E2, which are laterally offset from one another by means of a fastening bolt 7E3 as a fulcrum for the bracket halves 7E2 and a locking bolt 7E4. The fastening bolt ^¬ 7E3 and 7E4 of the locking bolt are against lateral displacement by a ball of resilient

7E5 secured plungers, which snaps into grooves 7E6 ^¬ . By this connection type of the upper part 7E1 with the bracket halves 7E2 and two removable pins 7E3 and 7E4 all parts can be replaced individually. To disassemble the hammer 7E, the locking pin 7E4 is pushed laterally outward and removed. The bracket halves 7E2 are opened and the hammer 7E can be removed. The assembly takes place in reverse order. The lateral

Pressing force on the locking bolt 7E4 must be greater than the holding force of the ball of the spring-loaded Druckstü ^¬ bridge 7E5. This allows assembly and disassembly without tools.

A hammer 7 in an embodiment F according to FIG. 8 consists of an upper part 7F1, which is open at the bottom, and a screwed-on closure part 7F2. By loosening and removing the hexagon nut 7F3 and removing the hexagonal screw 7F4, the closing part 7F2 becomes free and the top 7F1 of the hammer 7F can be removed. The assembly takes place in reverse order.

FIG. 3 contains all embodiments of the hammers closed and opened, which are again clearly shown in this drawing figure, but in practice are not realized in this way. Rather, it will be based on one of the hammer designs.

As shown particularly in FIGS. 1 and 2 can be seen, at the respective rod segment 6, which runs past the side edges between the vertices of the triangular rod receptacles 4, in each case at least one hammer 7 angeord ^¬ net, so that there are no gaps in the deburring of the slab 3 ent ^¬ stand.

List of reference numbers

1 central shaft

2 cutting bit

3 slab

4 pole recording

5 starting disc

6 bar segment

7 hammer

8 locking part

9 Screw element 10 Lateral surface

Claims

claims

Discharge device for removing a beard (2) produced during the oxy-fuel cutting on a slab

(3) with a motorized central shaft (1) and a plurality of pairs of rod receivers

(4), each spaced apart on the zent ^¬ ral shaft (1) are fastened, characterized in that each of the rod receptacles (4) is disc-shaped and substantially triangular in shape and the pair forming rod receptacles (4) offset by 60 ° lie with their side surfaces together, each of the rod shots (4) over the entire

Entbarterbreite a plurality of arranged between these laterally or radially outwardly removable rod segments (6) which are parallel to the zentra ^¬ len shaft (1), wherein on the rod segments (6) between the triangular rod receptacles (4) each a plurality of individually removable and exchangeable hammers (7) is arranged staggering side by side, each hammer (7) has a connecting ^¬ part, which opens the hammer (7) by unlocking and closes and each hammer (7) a mass or volume magnified, from the attachment point on the rod segment (6) remote hammer head.

Entbartervorrichtung according to claim 1, characterized in that each hammer (7) is formed substantially in two parts, namely a hammer body and a connecting part, which is arranged from the hammer body from ^¬ nehmbar or pivotally mounted thereto. Entbartervorrichtung according to claim 2, characterized in that the connecting part connected to the hammer body designed as a bracket and given ^¬ if lockable with security elements and can be solved.

Entbartervorrichtung according to one of claims 1 to 3, characterized in that the hammer (7) has a slot in which the hammer (7) on the rod segment (6) is guided radially.

Discharge device according to claim 1, characterized in that at least one hammer (7) is arranged on the respective bar segment (6) which passes by the side edges between the corner points of the triangular bar receivers (4).

Discharge device according to claim 1, characterized in that the width of the hammer (7) is increased in order to increase the volume of the hammer body.

Entbartervorrichtung according to claim 1, characterized in that the hammer (7) has a to the slab (3) pa ^¬ rallele surface or a peak in the impact area on ^¬.

Entbartervorrichtung according to claim 1, characterized in that instead of a plurality of rod segments (6) are each provided over the entire Entbarterbreite he ^¬ extending rods.

9. Entbartervorrichtung according to claim 1, characterized in that in each case in the outer region of the zentra ^¬ len wave a starting disc between two Stangenauf ^{¬ is} arranged.