ROLLING MILL POURING REEL

Abstract

A pouring reel for forming a hot rolled long product into an annular coil comprises a central mast lying on a vertical axis. A cylindrical tub surrounds and cooperates with the central mast to form an annular tub chamber. A coil plate defines a bottom of the tub chamber. The central mast, cylindrical tub and coil plate are rotatable in unison about the vertical axis. An entry nozzle has a delivery end arranged to direct the product downwardly into the tub chamber for accumulation on the coil plate as a series of superimposed rings forming the coil. The coil plate is movable downwardly along the vertical axis and relative to the central mast and the cylindrical tub to accommodate the increasing height of the coil being formed in the tub chamber.

Claims

1. A pouring reel for forming a hot rolled long product into an annular coil, comprising: a central mast lying on a vertical axis; a cylindrical tub surrounding and cooperating with said mast to form an annular chamber; a coil plate defining a bottom of said chamber; said central mast, cylindrical tub and coil plate being rotatable in unison about said vertical axis; an entry nozzle having a delivery end arranged to direct said product downwardly into said chamber for accumulation on said coil plate as a series of superimposed rings forming said coil; said coil plate being movable downwardly along said axis and relative to said central mast and said cylindrical tub to accommodate the increasing height of the coil being formed in said chamber; and vertically extending conveying elements circumferentially spaced around an interior surface of said cylindrical tub, said conveying elements being traversable downwardly and synchronously with said coil plate.

2. The pouring reel of claim 1 wherein said vertically traversable conveying elements are coupled to said coil plate.

3. The pouring reel of claim 2 wherein said endless conveyor chains or belts that extend between upper and lower idlers carried by said cylindrical tub.

4. The pouring reel of claim 3 wherein said conveyor chains or belts have outer return runs extending vertically along the exterior surface of said cylindrical tub.

5. The pouring reel of claim 3 wherein the inner runs of said conveyor chains or belts are received in and are traversable along guide channels in the interior surface of said cylindrical tub.

6. The pouring reel of claim 5 wherein inner runs of said conveyor chains or belts project radially inwardly from the interior surfaces of said cylindrical tub.

7. The pouring reel of claim 1 wherein said coil plate is moveable downwardly to maintain a substantially constant distance between the delivery end of said nozzle and the top of the coil being formed in said annular chamber.

8. The pouring reel of claim 1, wherein said entry nozzle is arranged at an angle of between 25 and 35 with respect to the horizontal.

9. The pouring reel of claim 8 wherein said angle is 30.

10. A pouring reel for forming a hot rolled long product into an annular coil, comprising: a central mast lying on a vertical axis; a cylindrical tub surrounding and cooperating with said mast to form an annular chamber; a coil plate defining a bottom of said chamber; said central mast, cylindrical tub and coil plate being rotatable in unison about said vertical axis; an entry nozzle having a delivery end arranged to direct said product downwardly into said chamber for accumulation on said coil plate as a series of superimposed rings forming said coil; said coil plate being movable downwardly along said axis and relative to said central mast and said cylindrical tub; conveyor elements circumferentially spaced around said cylindrical tub, said conveying elements being received in and movable along vertical guide channels in the interior surface of said cylindrical tub, said conveying elements having face plates projecting radially inwardly from an interior surface of said cylindrical tub and being coupled to and driven by the vertical adjustment of said coil plate.

11. A pouring reel for forming a hot rolled long product into an annular coil, comprising: a central mast lying on a vertical axis; a cylindrical tub surrounding and cooperating with said mast to form an annular chamber; a coil plate defining a bottom of said chamber; said central mast, cylindrical tub and coil plate being rotatable in unison about said vertical axis; an entry nozzle having a delivery end arranged to direct said product downwardly for accumulation on said coil plate and within said chamber as a series of superimposed rings forming said annular coil, said entry nozzle being inclined at an angle of between 25 and 30 with respect to the horizontal; said coil plate being adjustable vertically along said axis and relative to said central mast and said cylindrical tub to maintain a substantially constant distance between the delivery end of said nozzle and the top of the coil being formed in said annular chambers; and vertically traversable conveying elements circumferentially spaced around and extending vertically along the interior surface of said cylindrical tub, said conveying elements being coupled to and driven by the vertical adjustment of said coil plate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG. 1 is a side view of a pouring reel in accordance with an exemplary embodiment of the present invention;

[0019] FIG. 2 is an enlarged top plan view of the pouring reel depicted in FIG. 1, showing the pouring reel prior to commencement of a coil forming cycle;

[0020] FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;

[0021] FIG. 4 is a sectional view similar to FIG. 3 showing the pouring reel during a coil forming cycle;

[0022] FIG. 5 is a top plan view of the pouring reel as depicted in FIG. 4;

[0023] FIG. 6 is an enlarged partial sectional view taken along line 6-6 of FIG. 4;

[0024] FIG. 7 is a sectional view taken along line 7-7 of FIG. 6;

[0025] FIG. 8 is a sectional view similar to FIG. 4 showing the pouring reel at the completion of a coil forming cycle; and

[0026] FIG. 9 is a sectional view showing the pouring reel with the coil plate adjusted to its uppermost level to raise the completed coil vertically to an elevated position in readiness for removal from the pouring reel.

DETAILED DESCRIPTION

[0027] An exemplary embodiment of a pouring reel in accordance with the present invention is generally depicted at 10 in FIG. 1. A nozzle 12 or other like delivery device serves to direct a hot rolled product P into the pouring reel where it is accumulated in the form of an annular coil.

[0028] With reference additionally to FIGS. 2 and 3, it will be seen that the pouring reel comprises a central mast 14 lying on a vertical axis A and defined by circumferentially spaced posts 14 projecting vertically from a base 16.

[0029] A cylindrical tub 18 projects upwardly from the outer edge of base 16. The tub surrounds and cooperates with the mast 14 to form an annular chamber 20. A coil plate 22 defines a bottom of the annular chamber. As can be best seen in FIG. 2, the coil plate 22 has notches 24 through which the posts 14 project, thereby rotationally coupling the coil plate to the central mast.

[0030] The central mast 14, cylindrical tub 18 and coil plate 22, together with the base 16, are rotatable in unison about the vertical axis A. Typically, such rotation will be at a synchronous velocity to that of the product entering the pouring reel, with the nozzle 12 being inclined as shown in FIG. 1 at an angle a with respect to the horizontal, and with its delivery end positioned to direct the product downwardly into the annular chamber 20 for accumulation on the coil plate as a series of superimposed rings.

[0031] In addition to being rotatable, the coil plate 22, is vertically adjustable along axis A and relative to the central mast 14 and cylindrical tub 18. Such vertical adjustment may be achieved by an axially reciprocal central shaft 26. During a coil forming cycle, the coil plate 22 is gradually lowered to accommodate the increasing height of a coil being formed in chamber 20, while also maintaining a substantially constant distance between the delivery end of the nozzle 12 and the top of the growing coil.

[0032] Vertically traversable conveying elements 28 are circumferentially spaced around the interior surface of the cylindrical tub. With reference to FIGS. 6 and 7, the conveying elements may comprise the inner runs of chain conveyors. The chain conveyor may be of the endless type running vertically between upper and lower sprockets 30a, 30b. The inner runs of the chain conveyors which serve as the conveying elements 28 may be received in and traversable along guide channels 32 in the interior surface of the tub 18, and may be coupled as at 34 to the coil plate 22. The outer return runs of the chain conveyors extend vertically along the exterior surface of the tub 18.

[0033] The inner conveyor runs serving as the conveying elements may include face plates 36 that project radially inwardly as at 38 from the interior surface of the tub 16, and are thus positioned to be contacted by the entering product being urged radially outwardly by centripetal forces.

[0034] As the coil forms, the coil plate will descend at the correct rate selected to prevent the coil from spilling out of the top of the tub 18. The rate of descent will vary depending on product size and the delivery speed of the rolling mill.

[0035] The centripetal forces that might otherwise prevent the coil from forming uniformly from the fixed bottom of a conventional pouring reel tub are now employed advantageously. If and when the product is subjected to high centripetal forces when handling products at delivery speeds exceeding about 16 m/sec, the vertically traversable conveying elements 28 connected to the coil plate 22 will move the product in contact therewith in the correct direction allowing the next ring to be formed in an orderly manner.

[0036] Controlling the rate of coil plate descent controls coil formation. If a tight dense coil is required, the coil plate and conveying elements are moved downwardly at a slower rate. On the other hand, if a more open coil is required, the rate of descent can be increased, thus potentially leaving a small gap between each subsequent ring formed against the descending liner elements.

[0037] FIGS. 4 and 5 shown the pouring reel during a coil forming cycle, with the coil plate 22 descending towards the base 16.

[0038] FIG. 8 shows the pouring reel at the completion of a coil forming cycle. In FIG. 9, the coil plate has been adjusted to its uppermost level, which projects the completed coil vertically from the tub 18 in readiness for its removal from the pouring reel.