US1921486A - Apparatus for producing profile metals - Google Patents

Description

1933- H. SEIFERTH. 1,921,486

APPARATUS FOR PRODUCING PROFILE METALS Filed May 26, 1930 Patented Aug. 8, 1933 PATENT OFFICE APPARATUS FOR PRODUCING PROFILE METALS Hugo Seiferth, Dusseldorf-Oberkassel, Germany Application May 26, 1930, Serial No. 455,835, and in Germany June 27, 1929 1 Claim- (CI. 8019) The manufacture of profile metal by which is meant lengths or pieces of metal which cannot be shaped by a simple rolling operation, 1. e., wherein the profile of the work is interrupted,

presents great difficulties or is even impossible,

if the profile has projections of considerable thickness and height relatively to the cross section. Hitherto such work could only be produced by a pressing or forging operation.

According to the invention such profiling work is produced by passing the blank to be profiled between a rotating roll and a table which reciprocates in the direction of. the rotation of the roll to receive the profile. By this means the roll presses the blank into the table provided with the profile shape. In the case of profiles having only small projections no special means or measures are required for making possible an unhindered stretching of the metal to be rolled. With higher projections however it is necessary to feed the blank to the roll and movable table in such a Way as to enable the blank to expand freely (to lengthen or to stretch), behind the position of r working. To this end the blank may for example be fed along an incline or inclined chute which is adapted to feed the blank to the working position in a direction approximately tangentially.

The drawing shows by way of example an apparatus for carrying out the process of the in- 30 vention.

Figure 1 is a cross section through the rolls and a longitudinal section through the travelling table.

Figure 2 is a longitudinal section through the rolls and a cross section through the table.

Figure 3 is a cross section of a blank.

Figure 4 shows the finished work in longitudinal section or elevation.

Opposite to the driven upper roll a the rolling table 0 is arranged and adapted to move on the rollers b. On the underside of the table the rack d is provided which meshes with the pinion e for effecting the return movement. For the purpose of securing a better support, the table opposite the position of working rests upon the lower roll I which takes the counter-pressure. As may be seen from the drawing the blank 9 is fed in an approximately tangential direction to the position of working between the upper roll a and the interchangeable lining h of the rolling table, the surface oi. which lining is recessed to correspond to the desired profile to be impressed on the blank. The direction 01' the working movements is shown in Figure 1 by the arrows. The inclined feed of the blank indicated in Figure 1 has the advantage that the rolled blank or bar, with the relatively high profile illustrated, can be stretched with practically no friction to the rear of the position of working. There cannot therefore be any distortion, sticking or upsetting of the work in the recessed lining of the table.

It will be understood that instead of driving the upper roll, the table may be driven without affecting the utility of the invention.

It has proved advantageous so to construct the upper roll a that the outer working ring may be readily exchanged. This may be done by pulling up by means of bolts an interchangeable annular rim 2' of the roll against a conical flange k of the roll axle Z by the use of a conical ring m.

The invention is not affected by providing the profile at one part of the table only, where the other part is provided on the periphery of the roll. This may be the case for example if a projection be required on the top side as well as on the underside of the work, or if a recess be made on the underside to correspond with a projection on the top side, or vice versa.

I claim:-

A device for producing rolled iron bars provided with transverse projections of considerable height, comprising a reciprocating table possessing recesses corresponding to the desired transverse projections, a pressure roll adapted to exert pressure on profile metal placed between the roll and the table, a lower pressure roll beneath the reciprocating table for resisting the pressure of the upper roll when the latter is producing the profile in the profile metal, means for feeding the blanks between the upper roll and the table in inclined position, whereby said blank will be stretched towards the rear of the working position and practically without friction.

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