Patent GB-1045281-A (GB)
Title: Apparatus for operating on can body blanks
IPC: B21D51/26
Filed: 1963-05-03
Abstract: 1,045,281. Corrugating; shearing. T. E. LAXO. May 3, 1963 [May 3, 1962], No. 17586/63. Headings B3E and B3W. A machine for corrugating or parting can bodies comprises two tool-carrying turrets 20 keyed to a spindle 56 mounted in the frame 11 of the machine 10. In the periphery of each drum are a plurality of dovetail guides in each of which is a slide 82. As the turrets 20 rotate with the spindle 56 the slides are given a reciprocating motion by cam followers 54 which engage a cam track 52 in a cylinder cam 50 fixed to the machine frame 11. Mounted on each slide 82 is a rotatable tool-carrying spindle 100 which also carries a wide pinion 46. A stationary gear ring 48 fixed to the machine frame engages each pinion 46 so that the tool spindle is rotated as the turret turns. Tooling for a corrugating operation.-The tool spindles of one turret each carry a roll 40 and the spindles of the other turret each carry a roll 40a. These rolls move axially into a can body from opposite ends due to the reciprocating motion of the slides 82 and then co-operate with a stationary corrugating ring 44 mounted on a drum 60 fixed to the machine frame. The tool spindle 100 is journalled in a spindle sleeve 102, Fig. 3 (not shown), from which extend hinge arms 104. The arms are pivotally mounted on a spindle 105 carried by brackets 106 on a shoe 84 bolted to the slide 82. A spring 110 urges the rolls 40 or 40a against the ring 44 but permits the rolls to yield as they pass over a longitudinal seam in the can body. A screw acting against an abutment 88 facilitates accurate axial adjustment of the rollers 40 or 40a relative to the slides 82, and hence the ring 44. Tooling for a parting operation.-The corrugating rolls 40, 40a are replaced by member 145 which carries the inner parting cutter 130 and a member 136, Figs. 4 and 6 (not shown), which is mounted on the opposing spindle. There are spigot and socket portions on the members 145 and 136 which engage as the members move together axially, so that the cutter 130 is supported by both spindles. The outside parting cutter 140 is mounted on a spindle 142 carried by a bearing sleeve 144 which has projecting hinge arms 154. The arms 154 are clamped to a shaft 155 which is rotatably mounted in brackets 157 carried by a parting cutter shoe 120 which is bolted to the slide 82, Fig. 7 (not shown). Axial adjustment of the cutter is provided for by an abutment on the shoe 120, a pair of thrust bearings 158, 159 and a pair of nuts 160. Extensions of the arms 154 carry a roller 170 which follows an arcuate cam 180, clamped to the machine frame, as the turrets rotate. A spring 162 opens the cutters when the roller leaves the cam. The outside cutter is driven by a resilient friction ring 152 mounted on the inner cutter 130. The inside and outside cutters are preferably tapered inwardly at 5 degrees. Feeding and removing can bodies.-Can bodies are fed to the machine between guide rails 17 by a screw conveyer 16 at the end of which they are engaged by a star-wheel 18 which transfers the bodies to the turrets 20, between guide pins 21. The feed screw and star-wheel are driven in timed relation to the turrets. As the bodies complete the circuit of the turrets they are deflected by a finger 30 and a discharge star-wheel 32 into an exit shoot 14.