GB1096321A - Method and apparatus for forming a paperboard box or case around an array of containers - Google Patents

Abstract

1,096,321. Packaging. SUNDS VERKST€DER AKTIEBOLAG. April 12, 1965, No. 15466/65. Heading B8C. Folding box blanks about articles.-A box blank is folded about articles resting on the bottom panel (Fig. 15) by downward movement of the blank and articles on a platen 126 past fixed folders 188, 189 (Fig. 3) folding the side walls 24 (Fig. 15), fixed folders 184 folding the bottom end panels 28, and moving folders 158, 160 folding the end flaps 30. The box is then pushed to the right in Fig. 3 by a member 186 so that fixed folders 188, 190 fold over the top flap 26, which is then held by bars 192, and the top end flaps 28 are folded down by a plough 194. The box is then carried between side, top and bottom rollers (Fig. 4, not shown) which press the previously glued flaps, and bars on endless chains (242) fold in the trailing flap 32 (Fig. 15). The box is fed to the pressing conveyer by reciprocating pushers 220 (Fig. 3), the return feed being prevented by pawls 236. Feeding cans.-Cans to be inserted in the boxes are first marshalled into rows between guides 60 (Fig. 1) on each of two tables 12 mounted one above the other. The cans are then fed past a gate device into a vertically pivoting carrier 18 (Fig. 3) where they rest on spring-supported ledges 86. The carrier 18 is then pivoted downwardly (about a point 66, Fig. 7, not shown) and the cans are released to fall on to a box blank 20 (Fig. 3) by depressing end plates (90) (Fig. 9, not shown) formed with slots (98) which depress the ledges 86. Feeding the box blank.-The box blanks are fed from a stack 20 (Fig. 1) by feeding and glueing rollers 36. Automatic controls,-The presence of a full complement of cans in the carrier 18 is checked by swinging levers 102 (Fig. 10) formed with projections 106 which are prevented from passing through apertures in the end plates 90 of the carrier if cans are properly located in the carrier. When all the cans are present holes 108 in the links 102 register, and permit a light ray to pass to a photo-cell. The presence of a bag blank at 20 in Fig. 3 is detected by a micro-switch 40. The presence of a supply of cans in all three rows on the rotary table 12 is detected by limit switches 65.