US1029673A - Rod-mill. - Google Patents

Description

P. H. DANIELS.

ROD MILL.

APPLICATION FILLED MAY 16,1906.

1,029,673. Patented June 18, 191 2,

3 SHEETSSHEET l.

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P. H. DANIELS.

ROD MILL. v APPLIUATION FILED MAY 16, 1906.

Patented June 18, 1912.

3 EHBETSSHEET 2.

Maul/W COLUMBlA PLANOGRAPM CO.,WASHINOTON. D. c.

v F. H. DANIELS. .w

ROD MILL.

I APPLICATION FILED MAY 16, 1906. 1 029 673. Batented June 18,1912.

3 BHEETS'-SH EET 3 r' LI f/l/fVENTqR @uww WITNESSES FRED I-I. DANIELS, OF WGRGESTER, MASSACHUSETTS, ASSIGNOR TO THE AMERICAN STEEL & WIRE COMPANY OF NEW JERSEY, OF HOBOKEN, NEW JERSEY, A CORPO- RATION OF NEW JERSEY.

BOD-MILL.

Specification of Letters Patent.

Patented June 18, 1912.

Application filed May 16, 1906. Serial No. 317,072.

To all whom it may concern.-

Be it known that I, FRED I-l. DANIELS, of Worcester, Worcester county, Massachusetts, have invented a new and useful Rod Mill, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a partial plan view of a rod mill system constructed in accordance with my invention; Fig. 2 is a plan View of the remaining portion of the system; Fig. 3 is a plan view showing a set of hot reels be tween the billet mill and the intermediate mill; and Fig. A is a sectional view of the reel.

My invention. relates to continuous rod mills, or mills for rolling flexible material which may be handled in a Belgian or 0011- tinuous mill.

The object of the invention is to provide a new continuous system and arrangement of the several mills whereby a large production may be economically obtained.

4- 1 1 1 In the di awing, iefeirlng to Fig. 1, 2 rep resents the blooming mill and 3, the roller table leading therefrom. This roller table is preferably provided with a switch mechanism which is so arranged that instead of feeding the bloom directly forward to the shears shown at 1, it may be fed forward at another angle through the feed rolls 5 and shear 6 into a reheating furnace 7. This furnace is preferably arranged for long lengths up to 100 feet, and may be arranged so that the lengths enter at one side of the furnace and are moved sidewise in a group and fed out at the opposite end and from it the other side of the furnace chamber.

From this reheating furnace the bloom enters the feed rolls 8 and passes through a traveling shear 9 by which the bloom may be out into any desirable length; or if the shear is not employed the bloom maypass directly into the continuous billet mill shown at 10. This mill is of the ordinary continuous type having a series ofrolls 11 located in tandem, and the issuing billet passes into a heated trough or chamber 12, or in a modified form of mill system may be coiled and stored on hot reels so that the products thus kept hot can be withdrawn and rolled as desired. 1 show this arrangement in Fig. 3, in which A, A, are the reels mounted on vertical shafts and driven by horizontal shafts B through bevel gears B. A main shaft C is provided having bevel gears and double friction clutches D by which the reels can be given two speeds, a fast speed for reeling the rods and a slower speed for delivering the rods when the rotation of the reels is reversed by operation of the clutches. H are feed rolls so as to rotate with the respective reels at the same speed and in the same direction. I thus make the coil of metal on the reel of the same diameter at all speeds of the reel, and when the reels are reversed the feed-rolls receive and deliver it at the same speed at which it is received from the reels.

As the rod comes from-the billet mill 11 in the modified arrangement of the plant, it passes through the main feed-trough F and is switched to the appropriate reel by means of switchesF. The rod then runs through a repeater G into the feed rolls H by which it is pushed into the hot reel and is coiled thereby, the rotation of the reel being stopped in time to prevent the last end from passing through the feed rolls. When the rod has been sufficiently reheated on the reel, the reel is rotated in the opposite direction, its cold end is cut off by the shears I, and the rod is guided by the repeater G and guide-troughs F to the intermediate mill l5, and before entering this mill its front end may be cut by the shears L.

The reels are geared so that their speed in reeling is somewhat less than the speed of the rod delivered from the mill 10, so that the rod entering the reels will be slack and will loop out of the repeaters, thus preventing stretching of the rod. For like reason the speed of the reels when unreeling is somewhat greater than the speed of the first rolls of the intermediate mill. From the reheating chamber 12 it passes through the feed rolls 13 and the front end may be sheared by the shears indicated at 1 1 on Fig. 2. The billet is then fed into the intermediate mill 15 which is shown as being of the double Belgian mill type. As I have shown this in the drawings, one of each pair of spindles, preferably the one driving the rolls having an oval pass, is preferably driven direct from the engine 16 through a rope-drive; and the other spindle is driven from this rope-driven spindle either by suit able chain or spur gearing.

From the intermediate mill 15 the rod passes into the finishing mill 17, which is also of the double Belgian mill type. This mill is shown as having each one of the spindles actuated by an independent ropedrive, but the arrangement may be the same as the intermediate mill, that is, with one rope-drive actuating two spindles. Near the finishing mill are located the automatic reels 18 with the conveyer to carry the finished coil to a convenient place for loading. At 20 is located a reel for receiving heavy sizes of rods from one of the finishing mills (the mill 29). These rods can be removed from the reel and carried by a conveyer 19 to a conveyer 33.

The continuous billet mill 10 is arranged so that the billet may be delivered in different cross-sections from three different pairs of rolls through the guides 21, 22 and 23, which lead to the common conveyer 2a or to the heated trough 12. From the conveyer 2% the billet is delivered to shears 25 shown in Fig. 2 for cutting it into suitable lengths. These lengths/may then be fed into the furnace 26, pushed sidewise therein, and then forced out by pusher 27 which leads the billet forwardly into the first roll pair of roughing mill 28. This mill for rolling flats is also shown as ofthe double Belgian type, and may be provided with any suitable repeaters and looping floors. Depending upon the size of the flat which is desired, the metal may be finished in mill 29 or may .pass on to finishing mill 30 for further reduction. If fed to the finishing mill, it

may be coiled in suitable automatic reels 31 and delivered by conveyers 32 and 33 to the point desired.

Where the bloom passes direct through the shears 4, it may be cut into suitable lengths by such shears and then be delivered to billet-loading dock 3% shown in Fig. 2; or may be transferred by hand or trucks or otherwise to the conveyer 35 and by this conveyer 35 it can be delivered to the front of heating furnaces 36 from which it may be delivered to the rolling mill 10.

Instead of the mill shown for rolling flats, another finishing mill similar to that shown at 17 may be located in its place, since the intermediate mill 15 and the billet mill 10 have a capacity equal to two finishing mills. The mill may roll any number of rods at the same time.

The advantages of my invention result from the peculiar arrangement of the combined mills, especially the intermediate and finishing mills. Any length of billet may be rolled in the continuous billet mill, there by saving a large amount of cropping, cobbles, and rejected billets. The loss through this feature is a considerable factor in ordinary rod mill practice.

In Fig. 4 I show a sectional view of the hot reel. It consists of a cylindrical chamber A having an internal refractory lining BI and mounted on a vertical driven shaft as above stated. This reel is set within a suitable inclosing chamber N and is provided with a removable cover 0, in the top of which a burner P discharges oil, gas, or other fuel into the interior of the reel. The rod enters the reel beneath the cover and is coiled within the reel by the rotation of thelatter. The rod is heated by a flame supplied by the burner.

Variations may be made in the form and arrangement of the particular mills, the conveyers, &c., without departing from my invention as defined in the claims.

I claim:

1. The combination in a rod mill system of a continuous billet mill, a mill arranged to receive metal therefrom, switch devices arranged to divert thebillet from at least one of the intermediate sets of rolls of the continuous billet mill and another mill arranged to receive the diverted billet; substantially as described.

2. In a rod mill, rotary heating reels and means for driving and reversing them, rolls arranged to deliver metal to and receive it from the reels, said reels being geared to rotate at a less speed than the rolls from which they receive the metal, and at a greater speed than the rolls to which they deliver the same; substantially as described.

3. In a rod mill, rotary heating reels and means for driving and reversing them, rolls arranged to deliver metal to and receive it from the reels, said reels being geared to rotate at a less speed than the rolls from which they receive the metal, and at a greater speed than the rolls to which they deliver the same, and repeaters between the rolls and the reels; substantially as described.

l. In a rod mill system, a blooming mill, shears, and a long reheating furnace located conveniently thereto, and mechanism arranged to carry the metal from the blooming mill either through the shears or to the long reheating furnace; substantially as de scribed.

5. In a rod mill system, a blooming mill, a long reheating furnace arranged to receive metal therefrom, a continuous billet mill arranged conveniently to receive the metal from the reheating furnace, a second reheating furnace arranged to receive metal from the continuous billet mill, an inter-' mediate finishing mill beyond the second reheating furnace, a finishing mill for said intermediate mill, and another finishing mill arranged to receive metal from the billet mill Without passing through the second mentioned reheating furnace; substantially as described.

6. In a rod mill system, a blooming mill, a long reheating furnace arranged to receive metal therefrom, a continuous billet mill arranged conveniently to receive the metal from the reheating furnace, a second reheating furnace arranged to receive metal from the continuous billet mill, an intermediate finishing mill beyond the second reheating furnace, a finishing mill for said intermediate mill, another finishing mill arranged to receive metal from the billet mill Without passing through the second mentioned reheating furnace, and a reheating chamber arranged to heat the metal for the last mentioned finishing mill; substantially as de= scribed.

7. The combination in a rod mill system, of a continuous billet mill having a plurality of sets of rolls, a mill arranged to normally receive metal therefrom, switch devices arranged to divert the billet from any one of the sets of rolls of the continuous billet mill, and another mill arranged to receive the diverted billet; substantially as described.

In testimony whereof, I have hereunto set my hand.

FRED H. DANIELS.

Witnesses:

WM. A. BAcoN, G. LAMPSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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