GB868956A - Improvements in or relating to rim loading apparatus - Google Patents

Abstract

868,956. Making rim blanks; rolling. KELSEY-HAYES CO. June 13, 1958 [Aug. 29, 1957], No. 19028/58. Classes 83 (2) and 83 (4). Apparatus for feeding annular rim blanks to a working position in a rolling mill comprises a carrier movable to and from the working position, work clamping means on the carrier and means for releasing the clamp when the carrier has moved to the working position. A rim rolling machine comprises a base frame 11, a lower roll 14 and its driving shaft 13 mounted directly on the frame and an upper roll 15 and its shaft 16 mounted on a frame 18 hinged at 19 to the base frame and adapted to be swung upwardly by an hydraulic cylinder assembly 20 to permit the placing of a blank over the lower roll. Slidably mounted on rods 28 extending parallel to the roll axes is a plate-like carrier 27 movable by a double-acting cylinder 36. Mounted on the carrier is the rim clamping mechanism comprising at one end a fixed abutment block 55 and roller 54 and at the other end a movable section 56 operable by a cylinder 66 and carrying an arcuate abutment block 76 and a lower roller 79. Rim blanks are delivered to the carrier by a trough-shaped shoot 85 and an elevator 86 which is traversed on vertical guide rods 92 by a cylinder 93<SP>1</SP>. As a rim blank rolls from the shoot on to a supporting plate 89 of the elevator, it actuates a switch to admit air to the lower end of the cylinder 93<SP>1</SP> and so raise the elevator to its upper position where another switch is actuated to move forward the slide section 56 of the clamp. Initially the roller 79 engages the blank and raises it to a position where it is clamped between the abutments 55 and 76 directly in line with the roll 14. The elevator is .then allowed to descend and air is admitted to the cylinder 36 to move the carrier so that the blank extends over the roll 14 and another switch is actuated to lower the hinged frame 18. As this frame descends a switch is operated to open the clamp and so deposit the rim on to the roll 14. As the frame rises after the rolling operation the clamp is again closed to lift the rim from the lower roll. The carrier then returns to its normal position and the clamp is opened to release the rolled blank on to a discharge shoot 116.