GB914637A - Cutting or printing presses - Google Patents

Abstract

914,637. Cutting-machines. CHAMBON Ltd. Feb. 20, 1959 [Feb. 20, 1958], No. 6024/59. Class 31(1). [Also in Group XVI] In a cutting press which comprises a fixed forme table 21 having a plane surface for supporting cutting elements 22, and an impression table 1 having a cylindrical surface 1a adapted to roll over the table 21 to cut by line contact therewith, the table 1 is supported at each side by links 2, 3 pivotally connected to levers 6, 7, respectively, which are rocked about their pivots 10, 11 by two cams 12, 13, respectively, fixed on a constantly-rotating shaft 14. A roller 18, carried on the impression table 1 with its axis coincident with the surface 1a, runs in guides 17 which define a cycloidal path, so that the table 1 is guided to perform a true rolling motion. Pairs of feed rollers 20, 20a are arranged to feed intermittently a web 19 of material through the press. Starting from the position shown rotation of the shaft 14 causes the table 1 to roll over the table 21 until the part of the surface 1a adjacent the roller 18 lies in the plane of operation; then the table 1 moves bodily downwards so that the surface 1a is clear of the web 19, and the feed rollers 20, 20a then feed a fresh length of web into the press. Further rotation of the shaft 14 rocks the table 1 so that it returns to the position shown on the completion of one revolution of the shaft. In a modification, the guides 17 and roller 18 are omitted, and arcuate toothed sectors on the table 1 engage racks on the table 21. A cutting tool 22 of the rib or thread type on the table 21 may cut and/or score the web 19 to form carton blanks.