US1878595A - Rolling mill - Google Patents

Description

SephZO, 1932. F. MOLLER ROLLING MILL F iled Dec. 18. 1930 INVNTOR FRI T2 MOLLER gm M MM A TTORNE Y5 Patented Sept. 20, 1932 UNITED STATES FRITZ 116L133, OF D'UISBURG, GERMANY i nonnme MILL Application. filed ama. 18, 1930, Serial No. 503,122, and in Germany January 2, 1930.

My invention relates to rolling mills and particularly to that type of rolling mills in which there is employed a'plurality of rolls arranged in sets, the rolls of one set being parallel to each other, but at a right angle to those of the other set, and in which furthermore, each roll is provided with a plurality of grooves or equivalent operating portions, the purpose being to bring difierent operating portions of the sets of rolls into operative relation as desired by moving the rolls of both sets axially. This neces'sity for adjusting the rolls of both sets i "olves a complication and increased cost, d it is the object of my present invention to avoid this difficulty and to provide a construction in which the adjustment of the rolls is greatly simplified. In the preferred embodiment of my invention, as illustrated in the accompanying drawing, the-,rolls of one set are journalled in stationary bearings, but the rolls of the other set are j ournalled in a frame movable for adjustment, in a direction which is oblique to the direction of the rolls of both sets. By simply moving said frame in said oblique direction, different operating portions of the rolls of'one set can be brought into cooperative relation to the corresponding operating portions of the .rolls in the other set.

Without desiring to restrict myself to the particular details 'illustrated, -I will now describe a satisfactory embodiment of my invention with reference to the accompanying drawing in which Fig. 1 is a front elevation of my improved rolling mill, with parts in section; Fig. 2 is a diagrammatic plan View showing the relation of the two sets of rolls; Fig. 3 is a diagrammatic front elevation showing only the rolls, in a position corresponding to that of Fig. 1, and Figs. 4 and 5 are diagrammatic views showing the rolls in two other operative positions.

In the drawing the rolls 1 are shown as rotating about horizontal axes, while the axes of the rolls 2 are vertical. For convenience in description, I will refer to these rolls as horizontal and vertical rolls respectively, but it ill be understood that Ido not thereby res riot myself to this particular position,

since the machine illustrated will operate in any other position. The two horizontal rolls 1 are superposed and journalled in suitable stationary bearings-1'. As will be seen from Fig. 2, the vertical rolls 2 are arranged in a diiferent vertical plane from the horizontal rolls 1, and as indicated in Fig. 1, thevertical rolls are journalled in suitable bearings in a frame or slide 3 ,movable along a guide or track 4 which extends obliquely both to the horizontal and to the, vertical, or in other words, obliquely to the direction of the axes of both sets of rolls. Each of'the rolls 1, 2 is provided with a plurality of operating grooves or portions, those of the vertical rolls being indicated at a, b, a and those of the horizontal rolls at d, e, f. The frame or slide 3 may be shifted along the track or guide 4 in any suitable manner, for -instance by means of a spindle 5 held against rotation but mounted to slide lengthwise in a suitable bearing 5.- This spindle has a screwthreaded portion inmesh with a corresponding internal screwthread on a Worm wheel 7 mounted to rotate in said bearing but held against or operating portion e of the horizontal rolls. 7

and the blank under treatment will be drawn through the rolls along the path indicated by the line A in Fig. 2. If it is desired to adjust the rolls to a different relative position, for instance if the operating portions .6, e have become worn, the slide or frame '3 is moved up or down. An upward movement of said slide will bring the operating portion or groove (1. of the vertical rolls'2, at the point where these rolls are closest together, intoline with the operating portion of groove (1 of the horizontal rolls 1 at a point where these rolls are closest together. Such. upward movement is indicated in Fig. 1 by the arrow extending from a to d, while Fig. 4 indicates diagrammatically, the position of the two sets of rolls after the grooves a. and d have been brought into registry with each other. In Fig. 2, the line B indicates the path which the blank will take when the rolls are adjusted to the position shown in Fig. 4, and dotted lines indicate the position of the vertical rolls with such adjustment. If the slide 3 is moved down, as indicated in Fig. 1 by the arrow extending from a to f, the operating groove or portion a of the vertical rolls 2, at the point where they are closest together,

-will be brought into registry with the oper ating portion or groove 7 of the horizontal rolls 1, Where such horizontal rolls are closest together. The grooves or operating portions ,0 will thus come into registry with the grooves or operating portions f as illustrated diagrammatically in Fig.5, and the blank will take the path indicated by the line C in Fig. 2, which likewise indicates at the right by dotted lines, the position which the vertical rolls 2 will take with this adjustment.

In the embodiment illustrated, the three grooves a, b, 0 are alike and the grooves d, e, f likewise are alike. With such an arrangement changing the slide 3 from one of the positions shown in Figs. 3, 4, 5, to one or the other of such positions, would be simply for the purpose of bringing a new operating groove into use after one set of operating grooves has become impaired or worn by extended use. I do not, however, wish to restrict myself to a case in which the grooves of the same rolls are alike, but the same apparatus might be employed for operations in which the blank is passed successively in contact with operating portions of different shape. In other words, the grooves a, b, c (and the grooves d, e, 7) might be of difl'erent size or shape as desired for the progressive treatment of the blank in a plurality of passes. For instance, these grooves might be graduated in size, so that the blank would first be passed through grooves of a certain width, then, in a second pax, through grooves of a somewhat smaller width, and finally in a third pass through grooves of still smaller Width. It will, of course, be understood that I do not wish to restrict myself to having the rolls provided with three grooves or operating portions, but such grooves might number two, or more than three. These modific'ations and others may be made without departing from the nature of my invention as defined in the appended claims.

The rolls of one set are at right angles to those of the other set, in a skew relation thereto, since their axes do not intersect.

It "will be noted from Fig. 1 that the grooves a of the vertical rolls 2 are at the same distance from the inclined plane in which the slide 3 moves, as the grooves (Z of the horizontal rolls 1; this is indicated clear- 1y by the arrow extending from a to d, which arrow is parallel to the path of said slide 3. Similarly, as indicated by the arrow extending from 0 to f, the grooves c of the vertical rolls 2 are at the same distance from the inclined plane above referred to, as the grooves f of the horizontal rolls 1. Finally, the grooves b of the vertical rolls 2 are at the same distance from the above-mentioned inclined plane, as the grooves e of the horizontal rolls 1.

The drawing does not show any means for driving the rolls, since this forms no part of my invention, and any customary or ap proved drive may be employed.

I claim:

1; A rolling mill comprising two sets of rolls, each roll having a plurality of operating portions at different distances from one of its ends, the rolls of one set being parallel to each other but at right angles and in skew relation to those of the other set, stationary bearings for the rolls of one set, a slide in which the rolls of the other set are journaled, a guide on which said slide is movable in a direction oblique to the axes of the rolls of both sets, and means for moving said slide.

2. A rolling mill comprising two sets of rolls, each roll having a plurality of operating portions, the rolls of one set being parallel to each other but at right angles and in skew relation to those of the other set, and

a slide in which the rolls of one of said sets are journaled, said slide being movable in a path oblique to the axes of the rolls of both sets, the mating operating portions of the rolls of one set being at the same distance from the plane of said oblique path as the corresponding mating operating portions of the rolls of. the other set.

3. A rolling mill comprising two sets of rolls, each roll having a plurality of operating portions, the rolls of one set being in skew relation to those of the other set, and a slide in which the rolls of one of said sets are journaled, said slide being movable in a path oblique to the axes of the rolls of both sets,

the mating operating. port-ions of the rolls FRITZ MoLLER.

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