Patent GB-992394-A (GB)
Title: Packaging method and apparatus
IPC: B65B5/12
Filed: 1961-06-21
Abstract: 992,394. Packaging-machines; endless conveyers; gripping articles; shoots. AELFOOD MACHINERY DIVISION Inc. June 21, 1961 [June 24, 1960], No. 22505/61. Headings B8A, B8C, B8H and B8S. A packaging machine places articles, such as chocolates, into individual containers such as paper cups and inserts the filled cups into boxes, the cups being moved downwards into the boxes as the latter travel continuously on a conveyer. A series of filling machines 20 may be arranged along the box conveyer 2, so as each to place an article in a different zone of the box 4, Fig. 1. Cup supply (Figs. 5, 9).-Inverted nested cups 18 are withdrawn from a vertical magazine 50 by a suction head 66 pivoted by rack and pinion 74, 76 and vertically reciprocated by arms 88 between guides 56. The head, in position 66b, Fig. 5, enters the lowermost cup and the suction contracts it so that it may descend with the head past the stack support 55. During descent, the rack means rotates the head through 180 degrees and the head descends further to bring the cup beneath retainer strips 71 and on to a plate 78 above a conveyer belt 134 (see also Fig. 9). If two cups are inadvertently removed on the head, the outer is brushed off by a friction pad 123. The belt runs above a suction chamber and has cup positioning apertures 136. An open-bottomed chamber 80 has an aperture 154 adjacent the plate 78 through which suction from a hole 136 beneath the chamber acts on the cup to centre it over a gap 157 in the plate. As the hole 136 passes clear of the chamber it travels beneath the gap, picking up the cup 18. Chocolate supply and cup filling (Figs. 1, 11, 15, 18).-Chocolates 16 are emptied on to a conveyer 28 for each machine, Fig. 1, and pass on to a vibratory feeder 30 and slideway 32. Chocolates from the slideway fall on to a continuously moving conveyer belt 160, Fig. 11, and move towards a gate 170 controlled by escapement means (Figs. 12, 13, not shown). The chocolate preceding that at the gate is held by pads 173, on either side of the belt, on reciprocating resilient arms 205. As the gate releases the chocolates, they are engaged by opposed pads 33 (they project beyond the edges of the belt 160) for carriage to the cups. The pads 33 are mounted on carriers 246, Figs. 15, 18, travelling in an orbital path 240 and capable of being moved towards and away from each other by cam means 298, 302. The pads descend into the cups 18, open to release the chocolates and rise clear. Box filling (Figs. 1, 3, 20).-The filled cups pass from the belt 134 on to a platform 42 over which inserters are carried in an orbital path by a conveyer 323 over the boxes on the conveyer 2. Each inserter comprises a carriage 316, Figs. 3, 20, having a filling guide consisting of resilient fingers 47, 48 depending from a plate 312 in which is an aperture closed by a resilient slotted disc (Fig. 4, not shown). It also comprises a plunger 50 and a plate 38, the latter engaging a cup to position it beneath the plunger and sweep it off the platform 42 on to the plate 312. The plunger descends to press the filled cup through the disc and fingers 47, 48 and at the same time, the inserter is lowered so that, before the fingers 47 commence to part, they reach the base of a box on the conveyer 2. When the cup reaches the box base, the inserter rises but the plunger remains stationary until the fingers 47 are clear. Means are described for preventing descent of the inserters during setting up &c. (Figs. 22, 23, not shown). The machines are arranged to be readily movable for varying the box contents &c. They are also adjustable for various box and chocolate sizes. When starting up, the various gates 170 may release chocolates in sequence as the leading box progresses along the conveyer 2.