US1423856A - Delivery mechanism for rolling mills - Google Patents

Description

A. E. JUPP AND R. S. CROOKS. DELIVERY MECHANISM FOR ROLLING MILLS.

AiPLiCATION HLEB APR; 17, I918.

Patented July 25, 1922.

3 SHEETS-SHLET l.

INVENTOR: Q 39.

/ WITNESSES APPLICA ON FILED APR. I7, 1919.

Patented July 25, 1922.

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INVENTOR g (kosmw A. E. JUPP AND R. S CROOKS. DELIVERY MECHANISM FOR ROLLING MILLS.

APPLICATION HLEIJ APR 17, WIS).

Patented July 25, 1922.

3 SHtEYS SHHQI SI s Q I II I WW u n LQ w L L M hm W mum I UIJQNI D a WOODS OOOOOO m n N N w UNITED STATES PATENT OFFICE.

ALFRED E. JUPP AND ROXIE S.

CROOKS, OF YOUNGSTOWN, OHIO, ASSIGNORS TO THE YOUNGSTOWN SHEET & TUBE COMPANY, OF YOUNGSTOWN, OHIO, A CORPORATION OF OHIO.

DELIVERY MECHANISM FOR ROLLING MILLS.

Specification of Letters Patent.

Patented July 25, 1922.

Application filed April 17, 1919. Serial No. 290,890.

To all whom it may concern Be it known that we, ALFRED E. J UPP and Roxm S. CRooKs, both citizens of the United States, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented a new and useful Improvement in Delivery Mechanism for Rolling Mills, of which the followin is a full, clear, and exact description, ref erence being had to the accompan ing drawings, forming part of this speci cation, in which- Figure 1 is a diagrammatic view of certain parts in side elevation, illustrating our invention.

Figure 2 is a plan view.

Figure 3 is a partial section on the line III-III of Figure 2, on a large scale, and

Figure 4 is a diagrammatic view showing a modification.

Our invention has relation to delivery mechanism for finishing and other rolling mills; and is designed to provide means whereby the rolled pieces coming from the mill rolls onto the cooling bed rolls or runway, are automatically discharged therefrom to a cooling bed, and are also automatically moved along and discharged from said bed. Our invention eliminates certain hand-operations and hand-labor which has ordinarily been required with apparatus of this general character; and it also insures the discharge of the steel at the proper point along the cooling bed, thus keeping the ends of the pieces quite closely together and greatly reducing the croppage losses in shearing.

The nature 0 our invention will be best understood by reference to the accompanying drawings in which we have illustrated one embodiment thereof and which will now be described, it being premised, however, that various changes can be made in the details of construction, arrangement and combination of the several parts. without depart ing from the spirit and scope of our invention. as defined in the appended claims.

\Ve have shown our invention applied to delivery mechanism of generally well known character in which the steel coming from the mill rolls is delivered onto the cooling bed rolls 2. There are two parallel sets of these cooling bed rolls and our invention may be employed in connection with both sets. in which event the arrangement for one set now to be described is duplicated. From each set of these cooling bed rolls the rods,

bars or other pieces are delivered downwardly and laterally onto the usual cooling bed; and for this purpose the cooling beds comprise downwardly and laterally extending bars 3. These bars are represented by the dotted lines in the diagram of Figure 2, and one of them is shown in detail in Figure 3. They are of well-known character in the art. Each of said bars is mounted at its ends so as to rotate through an angle of 90 degrees, and has two sets of fingers 3 and 3" placed in staggered relations and at angles of 90 degrees to each other. The pieces are delivered from the rolls 2 onto these bars by means of arms or levers 4 on the longitudinally extending rock-shafts 5. These arms 4 are preferably provided with wear plates 4". The bars 3 are then periodically turned by suitable actuating connections, such as indicated at 6, which serves as an actuating connection between the longitudinally extending actuator bar 7 and the laterally extending bars 3 and rotates them through an angle of 90. The operation is such that each piece delivered onto the bars 3 is at each movement of said bars, moved downwardly and laterally one notch, while the piece at the lower ends of the bars is delivered therefrom. As thus far described the parts are well known in the art.

In accordance with our invention we provide each of the cooling bed runways with one or more switch devices 8. In Figure 1 we have shown two of these switches, whereas in Figure 4 we have shown four of them arranged in tandem. Each of these switches has a movable element which normally stands in a vertical position with its upper end projecting upwardly between two runways so as to be engaged by the oncoming workpiece, and when moved to the position shown in Figure 1, it closes an electric circuit 9. This electric circuit includes a relay magnet 10 whose armature 11 is arranged to control a second circuit 12 which includes a solenoid 13. The two switches 8 in Figure '1 are placed one in advance of the other and in multi le so that the actuation of either one of t em will effect the closing of the circuit of the magnet 10 and thereby of the solenoid 13.

The upwardly extending arms of the movable switch elements 8 are engaged by the forward ends of the work ieces. When one of these arms is engaged it is pushed down and is ridden over by the forward end of the workpiece. This switch actuating arm yields readily on contact with the workpiece traveling along the runway and does not appreciably exert any resistance or check the movement of the workpiece. The front end of the workpiece rides over the switch actuating arm and thereafter the push-off device operates to push the workpiece from the runway onto the cooling bed. When it is remembered that the hot pieces of steel which are often as long as a few hundred feet in length travel along the runway at high speed, the importance of having the switch actuating devices yield readily and permit the forward end of the workpiece to ride over them, can be appreciated.

Normally, the'left hand switch 8 is the operative switch, being placed at the deslred point, the other switch device 8 being a safety switch which will operate if, for any reason, the first switch does not. In the construction shown in Figure 4, the three normally operating switches are arranged to provide for the operation of the kick-off or delivery mechanism at different points along the length of the cooling bed. For this purpose each one of the circuits controlled by the switches 8 (except the safety switches) is provided with a hand-switch 14 which can be left open except at the particular switch which is in operation.

The solenoid 13 has its plunger operatively connected to a movable clutch member 15 which controls the operation of the shaft 16 which has an actuating connection 17 with one of the rock shafts 5 before described. Said shaft 5 at any desired point in its length, carries a contact arm 18, which, when the shaft is rocked, is designed to make electrical engagement with a contact 19, thereby closing an electric circuit 20 which includes a magnet 21. The armature 22 of the magnet 21, when actuated by its magnet, closes another circuit 23 which includes a solenoid 24. The plunger of the solenoid 9A is connected at 25 with ashifting lever 26 of a clutch 27. This clutch 27 controls gear connections 28 which actuate the reciprocating bar 7, before described.

The operation is as follows:

The steel passes onto the cooling bed runways, and after progressin to the desired point at which one of the switches 8 is placed, contacts with such switch thereby energizing the magnets 10 and 13 and throwing into operation the actuating connections 17 with the rock shaft 5. This shaft is thereby rotated to push the steel off the runway and onto the delivery bars of the cooling bed. The movement of the shaft 5 closes the contact at 19 and thereb Y energizes the magnets 21 and 24 to cause t e actuation of the bar 7, and the latter moves the delivery bars on the cooling bed to cause the steel thereon to are controlled by hand operations.

be moved downwardly and laterally one notch, in the manner before described.

It will be readily understood from the foregoing that by means of our invention the steel is automatically moved onto and along the cooling bed. This entirely does away with the hand labor which has heretofore been employed for the purpose of operating the clutches which control the delivery from the conveyor or runway onto the cooling bed and the movements of the cooling bed elements or delivery bars.

\Ve thus not only eliminate this labor, but also the troubles and delays which more or less frequently occur when these movements Furthermore, and inasmuch as successive operations will take place when each piece reaches the same point on the runway, the pieces discharged from the cooling bed rolls Will have their ends much more nearly uniform than has heretofore been possible. Consequently, when the pieces are subsequently sheared in bundles or bunches as is customary, the croppage losses are very greatly reduced.

It will be readil understood thatour invention is not limited in its use to the particular type of cooling bed which we have herein shown and described. Also that the pushoff actuating devices and the actuating connections controlled thereby may be widely changed without depalting from the spirit and scope of our invention as set forth in the ap ended claims.

e claim:

1. The combination with a cooling bed and its runway, of a push-off device for moving the hot workpieces from the runway to the cooling bed, and push-ofi' controlling means on the runway actuated. by but not materially checking the movement of the workpieces along the runway and operating upon engagement by a workpiece to start the pushotf device, substantially as described.

2. The combination with a cooling bed and its runway, of a push-off device for moving the hot workpieces from the runway to the cooling bed, and push-off controlling means on the runway including an element pro- 115 jecting into the path of the workpieces arranged to be turned aside and ridden over by the workpieces and operating upon engagement by a workpiece to start the puslr ofi' device, substantially as described.

3. The combination with a cooling bed and its runway, of a push-off device for moving the hot workpieces from the runway to the cooling bed, and electromagnetically operated means for operating the push-off device 125 including a switch, and a switch actuating element on the runway actuated by but not materially checkin the movement of the workpieces along t. e runway. said switch operating upon engagement of the switch 130 actuating element by a workpiece to immediately start the operation of the push-off device, substantially as described.

4. The Combination with a cooling bed and its runway, of a push-off device for moving the hot workpieces from the runway to the cooling bed, and a plurality of push-off controlling means spaced along the runway, together with means whereby one of said controlling devices may be rendered inoperative and another located at a different point may be rendered operative, substantially as described.

5. The combination with a cooling bed and its runway, of a push-off for moving the hot workpieces from the runway to the cooling bed, means for driving the push-oil including a continuously rotating shaft and a clutch connecting it with the push-oil", and means on the runway, actuated by but not materially checking the movement of the workpieces along the runway, for actuating the clutch, substantially as described.

6. The combination with a cooling bed and its runway, of a push-ofi' for moving the hot workpieces from the runway to the cooling bed, means for driving the push-off including a clutch. and means for actuating the clutch comprising a solenoid and an electric switch controlling the solenoid and having a switch actuating element on the runway arranged to cause the clutch to operate when the workpieces travelling along the runway engage said switch actuating element, substantially as described.

7. The combination with a cooling bed and its runway, of a push-off for moving the hot workpieces from the runway to the cooling bed, means for driving the pushcfi' including a clutch, and means for actuating the clutch comprising an electric switch operated by engagement with the workpieces travelling along the runway, substantially as described.

8. The combination with a coo-ling'bed and its runway, of a push-01f for moving the hot workpieces from the runway to the cooling bed, means for driving the push-off including a clutch and a clutch controlling mechanism operated by the engagement of a workpiece travelling along the runway, means for operating the cooling bed to move the workpieces along it including a clutch, and means controlled by the push-off for actuating said last named clutch, substantially as described.

9. The combination with a cooling bed and its runway, of a push-off device for moving the hot workpieces from the runway to the cooling bed, and push-off controlling means on the runway operated by engagement with the front ends of the workpieces travelling along the runway and arranged to be engaged by but not materially checking the movement of the workpieces, substantially as described.

In testimony whereof, we have hereunto set our hands.

A, E. J UPI. R. S. CROOKS.

Certificate of Correction.

It is hereby certified that in Letters Patent. No. 1,423,856, granted July .25. 1922.

upon the application of Alfred E. Jupp and Roxie S. Crooks, of Youngstown.

Ohio. for an improvement in Delivery Mechanism for Roller Mills, an error appears in the printed specification requiring correction as follows: Page 1, lines 94 and 95, for the word runways read runway rolls; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 17th day of October, A. D., 1922.

[am] KARL FENNING,

Assistant Commissioner of Patents.

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