US2042872A - Backing roll chuck latch - Google Patents

Description

June 2, 1936; H. H. TALBOT 2,042,872

BACKING ROLL CHUCK LATCH Filed Feb. l8, 1955 2 Sheets-Sheet l WITNESSES INVEOR. Z flmyyzzz g ;2 M BY m, musfli z f ATTORNEYS Patented June 2, 1936 STATES T G F F I C E United Engineering & Foundry Company,

Pittsburgh, Pa., a corporation of Pennsylvania Application February 18, 1935, Serial No. 6,950

14 Claims.

This invention pertains to rolling mills and more particularly to a latching mechanism for holding the bearing chucks for the necks of the mill rolls against endwise displacement in the roll housings.

Heretofore it has been the customary practice to provide a plurality of removable plates, or clamps, for holding the bearing chucks for the roll necks of the mill rolls in place and usually these plates are secured to the roll housing of the mill by a plurality of bolts. Among the objections to this practice is the inconvenience and difliculty which it involves in replacing the chucks when they are held in place by such means, and in addition they are unsightly and costly as well as detract from the strength of the roll housings where the latter have to be drilled for the reception of the clamp retaining bolts.

An object of this invention is to provide a simple, inexpensive and readily adjustable latching mechanism for use in holding a roll chuck in place in a roll housing which is adapted to permit the chuck being readily removed and replaced and which makes use of no bolts or equivalent means of a similar character which are difiicult and slow to remove and replace.

Another object is to provide a latching mechanism for holding a roll chuck in place in a roll housing which does not require the making of any bolt holes in the housing.

Another object is to provide a latching mecha nism of this character which does not involve any mutilation of the chuck-supporting structure.

It is also an object to provide a chuck for use on the backing rolls of a backed-up working roll type of mill which is equipped with latches for both holding itself in place in the roll housing and for holding the adjacent working roll chuck in place in it.

A further object is to provide a roll chuck which is adapted to releasably engage the inner and outer faces of a roll housing without the aid of screws or bolts.

These and various other objects, as well as the various other novel features and advantages of the invention, will be readily apparent when the following detailed description is read in conjunction with the accompanying drawings of which Fig. l is an elevational View of a portion of a rolling mill of the backed-up working roll type illustrating a nested chuck assembly incorporating one embodiment of the invention; Fig. 2 a horizontal sectional view taken on the line II-II of Fig. 1; Fig. 3 a fragmentary sectional view of the backing roll chuck retaining latch shaft and handle; and Fig. 4 a sectional view on the line IVIV of Fig. 1.

Referring in detail to the drawings, the numeral I designates the roll housings generally of a rolling mill of the 4-high backed-up working roll type. In the windows 2 of these housings there are shown in the conventional relation a Working roll '3' and a backing roll 1. The necks 3a of these working rolls 3 are mounted in a pair of bearing chucks 5 which are in turn nested for vertical and endwise adjustment in suitable openings 6 provided therefor in the bottoms of the bearing chucks 1 in which the necks 4a of the backing roll 4 are supported. These latter chucks I are themselves mounted in the windows of the roll housings for vertical adjustment under the control of the adjusting screws 8.

In accordance with this invention to hold the backing roll chucks I in place in the roll housings I one of them, and in the present embodiment the one on the right as viewed in Fig. 2, is provided with shoulders 9 on its outer lateral edges which are disposed to engage the outer face of the roll housings I and while permitting the chuck to be slid into the housing window 2 prevent it from moving inwardly beyond the point where the shoulders 9 engage the housings I. To also hold such chuck against outward movement when in its operative position it is equipped at each side opposite the neck 5a of the backing roll 4 with a releasablelatch I I which is mounted on the inner end of an actuating shaft I2 and disposed for movement in a recess I3 in the side of the chuck. This shaft I2 is extended for convenience in operating the latch to the outer faceof the chuck and equipped with a turning handle I4, which is mounted on a reduced portion I2a thereof projected beyond the face of the chuck. In the con struction shown. the shaft I2 is provided at its inner end with a non-circular portion I2b which is fitted in a correspondingly shaped opening in the latch II and to hold it in place a plate I5 disposed to engage the shoulder formed by the reduction I2a is bolted to the outer face of the chuck.

Referring to Figs. 1 and 3, to normally hold the latch in either its engaged or disengaged position it is so designed that when in one or the other of these positions it is held there by gravity. To positively prevent it from moving out of either of such positions, however, a locking pin I1 is provided in the handle I l and arranged to engage holes I6 provided in the plate I5 for such purrespectively. This pin is preferably mounted for axial movement in the handle l4 and equipped with a spring l8 which is disposed to constantly urge it into the holes l6. As shown the recess l3 in which the latch l I is arranged is preferably designed to completely conceal the latch when in its inoperative position. In addition the latch is equipped with a tail-piece Ila which engages the inner wall of the recess l3 and prevents the latch moving outwardly beyond its operative position whereby avoiding any possibility of its falling and injuring a workman while a roll is being changed.

While the retaining latches H may .be provided on the chucks at both ends of the rolls, it is not necessary as the chucks are all secured against axial movement on the rolls.. Although this may be accomplished in various ways, in the structure illustrated it is done by threadably mounting a retaining ring 22 on the outer end of the roll neck to engage a ring 23 disposed to engage the outer end of the inner race of the roller bearing assembly l9 and thereby force it against the tapered neck of the roll. To hold the upper race of the bearing assembly in place a ring-like retaining plate 2i is secured by bolts 25 to the outer face of the chuck.

For holding the working roll chucks 5 in place in the backing roll chucks I where they are nested, one of the backing roll chucks associated with each working roll, and preferably the one. can'ying the housing engaging latches II, is' provided with a pair of latches 26. These, like the backing roll chuck latches II, are provided with a substantial face 26a for engaging the working roll chucks and are pivotally supported by pins 21 extended through a pair of spaced brackets 28 and 28a formed on the backing roll chucks, the pins being held in place by collars 23 keyed thereto between the two brackets 28 and 23a. Adjacent the former of these brackets 28 and between it and the chuck proper a recess 3| is'provided for the reception of the latches 26 and so shaped as to completely conceal the latch when moved to its inoperative position. As illustrated, the latches 26 are disposed toengage the outer face of the working roll chuck and prevent its outward movement, while to prevent inward movement of such chuck flanges 32 are provided on the lateral edges thereof to engage the backing roll chucks. It will be appreciated however that axial movement of the chucks in either direction may be prevented by such latches alone if desired.

To retain the latches 26 in their operative and .inoperative positions. releasable stops 33 are provided, these being so located as to engage the latches on one side when in one position and on the other side when in the other position. Such stops may be either simply screw bolts, as shown, which must be unscrewed each time the latches are moved, or spring biased depressible stops, which may be simply forced into the face of the backing roll chuck to permit the latches to be moved thereover and automatically returned to their latch-engaging position as soon as the latches are moved past them.- In their preferred form these latches are also so shaped and mounted that the ones on the upper backing roll chuck at least will fall by gravity into their unlatched positions when the stops 33 are moved out of their way. However, to assure and simplify their movement into and out of the operative and inoperative positions they are keyed or otherwise fastened for rotation therewith'on the pins 21 about which they are pivoted and these pins provided with non-circular ends projected beyond the faces of the roll housings for the reception of a turning tool, not shown, by means of which they may be readily turned by an operatorfrom one position to another.

Like the backing roll chucks the working roll chucks are mounted against axial movement, on the rolls and hence latches 26 are necessary only 10 at, one end. As shown in Fig. 4 an internal shoulder 34 is provided on the inner end of the bearing-receiving opening in each of the working roll chucks to engage the inner end of the bearing cage 35 mounted therein, and this cage held 15 against axial movement on the roll neck by a collar 36 mounted on the inner end thereof, and a sleeve,3| mounted on its outer end, the latterbeing in turn held in place by an assembled retaining ring 38 mounted in a groove 39 provided :9 for its reception adjacent the outer ends of the 7 roll necks.

In practicing this invention, as will be readily appreciated by those skilled in the art, the only operations necessary for releasing the workinglzs roll chucks for removal is to disengage the latchengaging stops 33 and turn the latches 26 to their non-engaging positions. In the same manner all that is necessary to release the backing roll chucks for removal is to move the backing roll to chuck latches I l to their non-engaging positions.

According to the provisions of the patent statutes, I have explained the principle and construction of my invention and have illustrated and described what I now consider to represent 30 its best embodiment. However, I desire to have it understood that, within the scope of the appended claims, the invention 'may be practiced otherwise than as specifically illustrated and described.

I claim: 5

1. In a rolling mill of the backed-up working roll type, a roll housinghaving a roll chuck receiving window init, a. working roll chuck, a

backing roll chuck adapted to be removably mounted in said .window' and to receive said working roll chuck, and a plurality of pivotally supported latches mounted in recesses in the faces of said backing roll chuck adjacent said working roll chuck and the housing and movable 50- mounted in said window and to receive said work- 60 ing roll chuck, a plurality of pivotally supported latches mounted in recesses in the faces of said backing roll chuck adjacent said roll housing and removable into and out of enga ement therewith for holding it against endwise movement 5 I in the roll housing, and means operative between the backing and working roll chucks for holding the working roll chuck against endwise movement in the backing roll chuck.

3. In a rolling'mill of the backed-up working roll type, a roll housing having a roll chuck receiving window in it, a working roll chuck, a;backing rollfchuck adapted to be removably mounted in said window and to receive said working roll chuck, a plurality of pivot-ally supported latches 15 mounted in recesses in the lateral faces of said backing roll chuck and movable into and out of engagement with said roll housing for holding it against outward endwise movement in the roll housing, means on said backing roll chuck for limiting its inward movement, and a plurality of latches carried in recesses in the inner faces of said backing roll chuck and movable into and out of engagement with the working roll chuck for holding the latter against endwise movement in the backing roll chuck.

4. In a rolling mill of the backed-up working roll type, a roll supporting housing having a roll chuck receiving window in it, a backing roll chuck adapted to be removably mounted in said window and to receive and support a working roll chuck, shoulders on the lateral edges of said backing roll chuck for limiting its inward movement in said housing, a plurality of pivotally mounted latches carried in recesses in the lateral faces of said backing roll chuck and movable into and out of engagement with the roll housing for preventing its outward movement in said housing, a working roll chuck adapted to be mounted in said backing roll chuck, and a plurality of latches pivotally mounted in said backing rollchuck in recesses therein adjacent said working roll chuck and operable into and out of engagement therewith for preventing outward movement of the working roll chuck in the backing roll chuck.

5. In a rolling mill of the backed-up working roll type, a roll supporting housing having a roll chuck receiving window in it, a backing roll chuck adapted to be removably mounted in said window a plurality of pivotally mounted latches carried in recesses in the lateral faces of said backing roll chuck and movable into and out of engagement with the roll housing for preventing outward movement thereof in said housing, a working roll chuck adapted to be mounted in said backing roll chuck, shoulders on the lateral edges of said working roll chuck for limiting the inand operative for preventing outward movement of the working roll chuck in the backing roll chuck.

6. In a rolling mill, a roll supporting housing having a roll chuck receiving window in it, a roll chuck adapted to be removably supported in said window, and a plurality of latches pivotally supported in recesses provided in the lateral faces thereof and operative for releasable engaging said roll housing and holding said chuck against endwise movement in said housing.

7. In a rolling mill, a roll supporting housing having a roll chuck receiving window in it, a roll chuck adapted to be removably supported in said window, shoulders on the lateral edges of said chuck for limiting its inward movement in said housing, and a plurality of latches pivotally mounted in recesses in the lateral faces of said chuck and movable into and out of engagement with said housing for holding it against outward movement in the housing.

8. In a rolling mill, a roll supporting housing having a roll chuck receiving window in it, a roll chuck adapted to be removably supported in said window, a plurality of concealed pivotally supported latches operative between said chuck and housing for releasably holding said chuck against endwise movement in said housing, means located adjacent the outer face of said housing for manipulating said latches, and means associated with said manipulating means for releasably look-- ing said latches in selected positions.

9. In a rolling mill, a roll supporting housing having a roll chuck receiving window in it, a roll chuck adapted to be removably supported in said window, a plurality of pivotally supported latches mounted in said chuck for releasably holding it against endwise movement in said housing, a handle for manipulating each of said latches located adjacent the outer face of said chuck, and a spring biased pin carried by each of said handles disposed to engage in holes in the chuck for holding said latches in a selected position.

10. In a rolling mill, a roll supporting housing having a roll chuck receiving window in it, a roll chuck adapted to be removably mounted in said window, and a plurality of concealed pivotally supported latches operative between said chuck and housing for holding the chuck against endwise movement in the housing, said latches being so designed as to be urged by gravity toward both their operative and inoperative positions respectively, when in such positions.

11. In a rolling mill, a roll supporting housing having a roll chuck receiving window in it, a roll chuck adapted to be removably mounted in said window, a plurality of pivoted latches carried in recesses in the lateral faces of said chuck for locking it against endwise movement in said housing, means for moving said latches from their non-engaging to their housing-engaging positions, and means on said latch for limiting their movement out of the plane of the lateral faces of the chuck.

12. In a rolling mill, a roll supporting housing having a roll chuck receiving window in it, a roll chuck having a roll neck receiving opening therein mounted in said window and adapted to be axially removed therefrom, a chuck retaining ment with the center of said roll neck opening and disposed to releasably engage the housing to prevent axial displacement of the chuck.

13. In a rolling mill, a roll supporting housing having a window therein for receiving a roll neck chuck, a roll neck chuck adapted to be removably supported in said window, and a plurality of latches adjustably supported in recesses provided in the lateral faces thereof and operative for releasably engaging said housing and holding said chuck against endwise movement in the housing.

14. A rolling mill comprising a housing member formed with a window, a roll neck chuck member slidably supported in the window and means for locking the chuck member and housing member together which includes a latch adjustably supported in a recess in one member and operative to releasably engage the other member.

HOWARD H. TALBOT.

Images