Patent GB-1245793-A (GB)
Title: Apparatus and method for transferring articles from a conveyor onto a support and wrapping a stack of articles on the support with shrinkable film
Inventor: GRASVOLL HALVOR
IPC: B65B9/02
Filed: 1968-09-17
Abstract: 1,245,793. Conveyers; loading pallets. H. GRASVOLL, G. G. MAGNUSSON, and K. I. WEINER. 17 Sept., 1968 [19 Sept., 1967], No. 44222/68. Headings B8A and B8C. Apparatus for transferring goods from a roller conveyer 18 to pallets 4 on a roller conveyer 3, comprises a carriage 6 having a chain-driven feeder 10 and a stripper 23, the carriage being movable vertically on guides 5. When a number of articles 19 have been moved on to the conveyer 18, they are transferred by a pusher 21 on to pivotally connected plates 11 of the feeder 10 which, with the carriage 6, is lowered to the level of the pallet 4. The motor 16 which drives the feeder 10 is then automatically energized, the plates 11 move towards the stripper 23 and the articles 19 are deposited on the pallet 4. The carriage 6 and the feeder plates 11 are then returned to their original positions to receive more articles 19 for loading on the previous articles on the pallet. The fully loaded pallet is then moved away on the conveyer 3 and an empty pallet moved into the loading position. In a modification, Fig. 6, the rollers 24 of the conveyer 18 are supported at one end only and are chain driven. The plates 11 of the feeder 10 have flanges 27 which at the end remote of the carriage 6 are inclined for discharging the articles 19. A guide 17 for some of the feeder plates 11 is pivoted at 29 and may be raised and lowered by a piston-cylinder unit 31, 32. A stripper 33, pivoted at 35, comprises two interconnected side arms 34. In operation, after a number of articles 19 have been received on the conveyer 18, they are lifted from the conveyer by the support 17, the feeder 10 is operated to move the articles 19 clear of the conveyer 18 and the carriage 6 is lowered. An arm 36 of the stripper thus clears an abutment 37 and the stripper falls, Fig. 8 (not shown). Movement of the feeder plates to the right then causes the articles 19 to be deposited, as before. In a further embodiment, Fig. 10, there is provision for wrapping the articles 19 in shrinkable plastics foil stored in rolls 40, 46. Assuming the ends of the foil initially to be welded together in the vicinity of a rail 43, after the articles have been moved to the position shown, the stripper 33<SP>1</SP>, as the carriage is lowered, is lowered by an amount limited by a retractable stop 54, and an electrically heated cutter (50), Fig. 13 (not shown) remains unoperated. After the articles 19 have been stripped on to a belt conveyer (52), Fig. 9 (not shown), and if desired, further layers of articles have been stripped thereon, the stop 54 is retracted and the stripper 33<SP>1</SP> is completely lowered to cause cutting and welding of the foil at the rail 43. The pack is then moved away by the conveyer (52) to a shrinking tunnel. The rolls of foil may be carried in a stationary support. Although not shown, devices including film welding and separating apparatus and storage rolls of shrinkable film are provided in the first two embodiments, in a manner similar to that in the Fig. 10 embodiment.