GB1424601A - Rolling-type marking amchine and a mehtod for automatically marking a travelling materials using such a machine - Google Patents

Abstract

1424601 Rolling mills NIPPON STEEL CORP 29 June 1973 [30 June 1972 (2) 3 July 1972 13 July 1972 (4) 1 Aug 1972 (2) 19 Aug 1972 22 Dec 1972 (2) 26 April 1973] 30968/73 Heading B3M [Also in Division B6] A marking machine, suitable for impressing characters in a steel sheet, includes a roll, Fig. 2, formed from a number of rings 1 having peripheral characters 2 and supported on a central shaft 3, the axis of the shaft being eccentric relative to bearing journals 4 for the roll. The rings may be located between rolls 7 which contact the surface of a sheet 8, such that the characters contact the surface for each rotation of the roll. Each ring 1 is of toothed form, Fig. 3, and has a punch 2 located in a bore in each of its teeth, the punches bearing against the central shaft and being held in position by split bushes 9. Alternatively, the rings may be of annular form, Fig. 10, and are held in place by wedges 18 which co-operate with notches 15 in the rings. The outer end of each punch may have a curved surface to facilitate clear marking. In order to change the characters to be impressed, each ring 1 is indexable about the shaft 3, suitably by a rack 40, Fig. 18, engaging with the teeth. The rack is axially moved by a piston-rod 48 coupled to cylinders 45 to 47, the combination of cylinders used depending on the number of tooth spaces the ring is to be indexed. When the positions of the rack and teeth preclude indexing in one direction, the rack and its operating assembly is pivoted clear of the ring about pivot 51, and the rack is shifted to a more appropriate position. The cylinders 45 to 47 of adjacent assemblies are staggered relative to each other to save space. An automatic control system is used for presetting the rings to give a desired row of characters and for detecting any malfunction of the apparatus. The spacing between adjacent rows of marked characters and the thickness of the marked material are taken into account. The apparatus, Figs. 29 and 31, includes a marking roll 30 mounted in a frame 92 above rollers 76 on which a material to be marked is supported. The roll is rotated by an hydraulic or electric motor 19 through clutch parts 22, 23 and a shaft 90, the clutch parts determining the angle through which the roll rotates before marking the material. The racks 40 are movable upwardly relative to the roll about a pivot 51, and the whole assembly is vertically movable by a motor-driven screw 79 about a pivot shaft 97.