US2781179A - Reel for rolling mill - Google Patents

Description

1957 J. M. O'MALLEY 2,78 79 REEL FOR ROLLING MILL Filed Oct. 5, 1953 INVENTORL Joseph M. O'MaUey United States Patent '6 REEL FOR ROLLING IVHLL Joseph M. OMalley, Worcester, Mass, assignor to Morgan Construction Company, Worcester, Mass, a corporation of Massachusetts Application October 5, 1953, Serial No. 384,198

3 Claims. (Cl. 242-81) This invention relates to a reel and more particularly to an apparatus for coiling the product of a rolling mill.

In the process of forming thin rolling mill product, such as rod, it is the usual practice to form it into coils in a reel. These reels are of two types: the pouring reel, wherein the rod enters a cylindrical cage from a fixed nozzle and the cage rotates about a vertical axis and the laying reel, wherein the cage remains fixed and the nozzle moves in a circle about the axis of the cage. In both cases, but particularly in the case of the pouring reel, the effects of centrifugal force prevent eflicient operation at very high speeds. As the speed of production of rod from rolling mills increases, as it has in the last few years, this force becomes more and more troublesome, since centrifugal force increases as the square of the velocity. The most predominant effect of this force in a pouring reel is that the rod sticks to the pins making up the cage at the point at which the rod enters the reel instead of sliding downwardly to rest on the top of the portion of the coil already formed. This is because the centrifugal force presses the rod against the pins with such force that the friction forces resisting downward movement of the rod are greater than the force of gravity tending to move the rod downwardly. This tendency limits the speeds at which rod may be reeled at the present time. The present invention obviates some of the dificulties encountered in prior art constructions because of these efiects.

It is therefore an outstanding object of the present invention to provide a reel which will enable thin products of a rolling mill to be formed into a coil at a considerably faster rate than has been possible previously.

It is a further object of this invention to provide a pouring reel in which the friction forces tending to pre- 7 vent the rod from moving downward are minimized.

Another object of the present invention is the provi' sion of a pouring reel in which centrifugal forces are used to overcome frictional forces that might otherwise prevent downward movement of the rod. 7

To the accomplishment of the foregoing and related ends, the invention, then, comprises the features hereinafter fully described and particularly pointed out in the claims the following description and the annexed drawing setting forth in detail a certain illustrative embodiment of the invention, this being indicative, however, of but one of the various ways in which the principles of the invention may be employed.

In the said annexed drawing, Fig. l is a vertical sectional view of a reel constructed after the teachings of the invention, and

Figure 2 is a sectional view taken on the line 11-11 of Figure 1.

In general, the invention consists in constructing a pouring reel in such a manner that the pins are inclined inwardly and upwardly while rod is being admitted, but which move into a vertical position when the rod coil is being removed.

Referring to the drawing, the reel, designated generally by the reference numeral 10, comprises a horizontal coil plate 11 through which pass a circular row of inner pins 12 and a circular row of outer pins 13. The pins are fastened to a driving plate 14 which underlies the coil plate and serves to support and drive it. A housing 15 surrounds all of these elements. The driving plate 14 is mounted on and concentric with a hub member 16 which has a tubular portion 17 which extends downwardly and a skirt portion 18 which extends downwardly and outwardly. The lower edge of the skirt has a bevel pinion gear 19 fastened thereto. The pinion gear engages another bevel gear 20 keyed to a horizontal drive shaft 21. This shaft is, in turn, connected to a source of power, not shown, but by which the reel is driven. A housing 22 surrounds the gears and serves to support the elements of the reel. The hub member 16 is supported on the housing 22, there being a combined thrust and radial bearing 23 therebetween. Through the tubular portion 17 of the hub member extends a shaft 24 which is fastened at its upper end to the coil plate and at its lower end to an actuating mechanism, not shown, which on occasion causes the shaft to move upwardly, carrying the coil plate with it.

The inner pins 12 taper to a reduced diameter at the upper portion. At the lower end, each is provided with a threaded portion 25 which extends through the drive plate and on which is threaded a nut 26. An integral circular flange or shoulder 27 extends outwardly from the pin above the threaded portion and is eccentric therewith; this shoulder resides in a circular aperture 28 provided on the coil plate during reeling. Drive pins 29 extend upwardly from the drive plate and pass through suitable apertures 30 in the coil plate. Fastener pins 31 pass through the hub member and the drive plate to hold them together, the pins passing axially upwardly through each of the drive pins 29 and having a nut 32 at the upper end thereof.

Each of the outer pins 13 is provided at its lower end with a flat portion 33 which lies between two lugs 34 projecting downwardly from the underside of the driving plate 14 and is hingedly connected thereto by a pivot pin 35. The pivot pins are arranged substantially horizontally and tangentially to an imaginary circle whose center is coincident with the axis of the reel. Immediately above and integral with the fiat portion 33 of each 7 outer pin 13 is a flange or flat disk portion 36 whose axis tion is inclined at a small angle to the axes of the hub and disk portion, this inclination being in the directionv of the said axes and of the main axis of the reel. This angle will, of course, be determined by such factors as the speed of reeling, the size and weight of the material, etc.

The operation of the apparatus of the invention will now be evident in view of the above description. Power is introduced through the shaft 21, thus driving the bevel gear 20 which is keyed thereto. The gear 20 engages the pinion gear 19 so that the hub member 16, to which it is fastened, is also driven. This, in turn, drives the driving plate 14 because of the presence of the fastener pins 31 which extend through the driving plate and the hub member. The rotation of the driving plate carries with it the inner pins 12, because they are fastened tightly thereto; it carries with it the outer pins 13 because of the connection through the lugs 34 and the pins 35.

' with the 'surfiace of its respective aperture38 in the coil plate. The shaft 24 is in the lower, retracted position shown in solidlines in the drawing and, so the coil plate 11 is drawn into engagement with the upper surface of thedriving plate 14. Because of the relationship of the parts, however, actual engagement takes place-only between these two members and the disk portion'li fi of the outer pins; that is to say, the disk portion is clamped be'tween th'e driving plate and the coi-l'p'late under the combined actions of the shaft 24, the weight'of the coil plate, and the; weight of any rod which may be resting on'the coil plate." This clamping of the disk portion constrains it to a generally'horizontal position, so'that the-shaft portion 3'9 of each of the outer pinsleans inwardlytoward the center of the reel. The rod is introduced into the space between the inner and outer pins 1 froma fixed nozzle, not shown. As the rod accumulates in' this space, "it is thrown outwardly. against the outer pins by centrifugal force; inthe past, as has been exsituated in their inwardly inclined positions during th e' formation o'f'the coil, but are free to move into'vertical positions for thc'removal of the coil from the reel.

Other modes of applying the principle of the invention may be employed, change being made as regards the details described, provided the features stated in the following claims, or the equivalent of such, be employed.

I therefore particularly point out and distinctly claim as my invention:

1. A pouring'reel :for use in coiling the product-of l rolling mill comprising a first series of pins arrang a circle, a second series of pins arranged in 'a circle which is concentric with the first circle and'whose diameter is each other about an axis passing through the center of the pin circles, the pins in the second circle being hingedly plained, a speed of reeling is eventually reached under a'g'ivenset of. conditions at which'the f iction 'forces'resisting downward movement of the rod are greater'than the iforces of gravity tending to force the rod'down. When this condition is reached, it is impossible to coil the incoming rod. In the present apparatus, however, the centriiugal forces break down into 'two components: one component normal tothe pin surface which tends to createfriction forces and to resist downward movement of the rod'and another component parallel to the pin surface which aids the force of gravity in forcing the rod downwardly. If the speed of the reel is greatly increased, a point will be reached, even with the apparatus of the invention, wherein the friction forces become too great {tobe overcome by gravity. However, the present invention permits reeling speeds which are greatly in excess of those possible with prior art devices;

When sufiicient rod has accumulated in the space between-the inner and the outer pins,.the reel is stopped and the shaft 24 is'moved into the upper position shown in broken lines and indicated by the reference numeral 24'. This carries the 'coil plate and the coil into the position indicated by the reference numeral'll'. The upwardimovenient of the coil plate 11 releases the disk portions 36 or the 'outer pins 13, so that the outer pins are nee; torotate about the pivot pins to the extent permitted by'the aperturesfi The coil of rod which was: previously frjned is slightly conical, with the larger end a'tfl1e' beam, because of the inward inclination "of the .outer'pins. The large end of the coil 'nowcng'agejs' upper portions of the outer pins, thus camming the pins,

vented from further movement by engagement with the surfaces of the'apertures 33. In this position, the outer pins are substantially vertical, as is indicated "by 'the reference numeral 13'. The pins are, therefore, rigidly outwardly. The pins, thus, move outwardly "until 'pre- '60 position.

3. A pouring reel for use in coiling the product of a mounted on pivotal axes which are tangential to a ci xle concentric with the said axis forrnovement between positions inclined to the axis and positions parallel to the axis,

2. pouring reel for use in coiling the product off a rolling mill comprisinga firstseries of pins arranged in .a circle, a second series of pins arranged in a circle which is concentric with the first circle and whose diameter is substantially larger than the first, a coil plate through which the pins project, the two series of pins and the coil plate defining an annular space within which the coil is formed, means for rotating the product and thepins relative to each other about an axis passing through the center of the pin circles, the coil plate being capable of move ment along the axis for removal of the coil, the pins in the-second circle being pivotally mounted for movement from positions inclined to the axis to positions, parallel to the axis when the coil plate is in the coil removal rolling mill comprising a driving member, a coil plate overlying the driving member and capable of movement toward and away from the member, a first series, of pins extending through the plate and arranged in, a circle, a second series of pins extending through theplate and arranged in a circle which is concentric with the first circle having a diameter which is substantially larger, than the first the two series of pins and the .plate defining :an annularspace within which the coil is to be formed, means for rotating the product and the pins relative to ea'ch' other about-an axis passing through the center offthe pin circles, the pins in the second circle being hingcdlycon nected to the driving member and each "having a flange which is clamped between the said member and the plate clamped, but being, capable of movement to positions parallel to the said axis whenthe coil plate movesaway from the plate. a

I References Cited in the'file of this patent UNITED STATES PATENTS Hewitt et a1 Dec. 4, .litiiil Dahlstrom June 10, .1930

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