Patent GB-1005817-A (GB)
Title: Apparatus for forming cartons filled with articles
IPC: B65B43/10
Filed: 1961-09-13
Abstract: 1,005,817. Wrapping-machines; conveyers. AMERICAN MACHINE & FOUNDRY CO. Sept. 13, 1961 [Sept. 26, 1960], No. 32872/61. Headings B8A and B8C. [Also in Divisions B2 and B6] A machine for wrapping assembled groups of articles, e.g. packets of cigarettes, in carton blanks comprises means for feeding the blanks continuously past gluing, article depositing and folding stations, the blanks being tubed about the articles after they are laid upon them and protruding end flaps being folded in to complete the packages. Blank feed.-Each blank b is fed from a magazine A by rollers 32 (see Division B6) on to a conveyer C1 (90), dogs 108 of which, Fig. 4, pass it beneath gluing discs 142 (see Division B2), for applying adhesive a, Fig. 19b. The pressure roll 166 beneath the discs may be lowered to prevent gluing, by a toggle 182, 194, 204 and a solenoid 210. The glued blank is gripped by rolls 226, 228 for engagement by a dog 268 of a second conveyer C2 (230), the dog turning up the trailing flap b11. Article feed.-The articles p are fed in two sets of five parallel rows by belts 272, Figs. 7, 9, a roller 280 pressing each row down and a gate 288 controlling the exit on to opposed transverse belts 328, 330. Articles are deposited one at a time on the belts while separated by sectors 394 on a shaft 298. The shaft rotates to raise the sectors and sweeper arms 392 on chains 362, moving at a speed in excess of the belts, force the opposed columns of articles into arcuate gravity shoots 396, 398. As alternatives, sweepers operating over stationary surfaces, or moving belts only may be used. Between the two shoots is a feed wheel 414 with projections 418, 420 which urge forward one pair of groups of five articles while restraining that following, respectively. Carton folding.-As they leave the wheel, ten articles p are deposited on the blank which, at the same time, is folded to U-form about them by rods 422, 424. A strip 446, Fig. 7, extending between the contents and a side of the U, drags the articles back to abut the turned-up flap b11. Top closing flaps b4, b7, Fig. 19e, are next folded in by rods 454, 456, Fig. 12, strips 452 extending beneath the folds and co-operating with rollers 458, 460 to produce sharp creases. A roller 462 presses the glue lap. The package now passes between opposed horizontal 494 (496), Fig. 1, and a vertical 490 endless chains having projecting dogs which fold in the trailing end flaps in the manner of b11. The vertical chain folder operates on an alternative form of blank, Fig. 20 in which there is an upper trailing flap b12. When this blank is used, one of the side chain folders is not employed. Finally, a conveyer H (540), Figs. 1, 16, 17, with dogs 550 co-operating with a spring- loaded presser 612 feeds each package into pockets formed by bars 608 on intermittently moving chains 570, 572 of a conveyer J, Figs. 1, 16, 17. Pivotable spring-loaded plates 560, 558, Fig. 17, receive the leading end flaps b8, b10 of the blank of Fig. 19b and are rotated to the vertical by movement of the package, thus folding in the flaps. They are differently sited for the blank of Fig. 20. The spacing of the bars 608 is adjustable for various package sizes and the chains 570 are tensioned by an idler 578 on an adjustable sector 604. The dogs 550 are controlled by cam means to pivot clear of the packages as they enter between the bars 608. Movement of the package between presser plates 618, 620, Fig. 16, folds down the flap b5 and secures the adhesive joints. The chain folder for the flap b6 may be suppressed and this flap folded by the pressure plate 618. Automatic controls.-If the supply of articles on the belts 272, Fig. 7, fails, a detector 278 causes disengagement of a clutch driving the blank feed rollers. If blanks are not fed to the gluing means a detector adjacent the latter operates the solenoid 210 to lower the roller. 166, Fig. 4, and a second solenoid 320, Fig. 7, to cause a member 316 to lock the article checking gates 288 in the closed position. The machine is fully adjustable for different blank, article and package sizes.