Patent GB-1171762-A (GB)
Title: Improvements in or relating to Packing Machines.
Inventor: DAVIES ROBERT WILLIAM
IPC: B65B19/24
Filed: 1965-11-01
Abstract: 1,171,762. A packing machine for cigarettes. MOLINS MACHINE CO. Ltd. 31 Oct., 1966 [1 Nov., 1965], No. 46143/65. Heading B5D. [Also in Division B8] A machine comprises continuously revolving sets of identical mechanisms for batching articles, e.g. cigarettes, forming containers, filling the containers with the articles and closing and ejecting the filled containers. General description.-The machine described forms batches of twenty cigarettes, makes double-walled packets by folding two blanks in succession about formers, thrusts each batch into a packet, folds down the packet mouth and secures the folds with a label. Sets of twentyfour batch forming, packet forming and packet filling and closing devices are carried on three vertically spaced sections 3, 4, 5, respectively, Fig. 1, of a turret rotating continuously about a common vertical axis. End testing devices engage the cigarettes during batch formation to cause rejection of packets containing faulty contents, adjacent the discharge position of the machine. Forming the packets.-The packet forming devices in the lowermost section, 4, of the machine, Figs. 15A and 17, comprise twentyfour rotatable blocks 15 each associated with a vertical former 18 which is movable radially to enter recesses 25, 30 in its respective block. The blocks are arranged to each suctionally pick up a piece of foil F, forming the inner packet, from a drum 23, so that it covers the recess 25. The foil feed may be as described in Specification 1,037,261. During anti-clockwise movement of the turret as shown in Fig. 15A the block revolves 180 degrees about its own axis 227 until the foil covered face is innermost. The respective former 18 now moves outwards to push the foil into recess 25 against a backing-plate 230, at the same time as an outer packet blank is picked up by the opposite face of the block 15 from a drum 27 in the same manner that the foil was picked up. During further turret movement a tucker 278, Fig. 17, fixed to the top of the recess 25 folds the top panel T 1 , Fig. 19, a rotary folder 284, Figs. 15A, 17, wipes down the trailing end of the foil and a convex folder 287 the leading end, forming a tube around the former. The former is connected to a suction source to hold the tube as it is retracted from the recess to abut against a plate 269. The former next passes beneath a rotary tucker (294), Figs. 15, 34 (not shown), which is timed to miss the leading end T 2 , Fig. 22, but folds down the trailing end T 3 , at the same time as the leading end is ploughed down by a stationary folder (295). A plough (296) then folds down the flap T 4 . During this folding the blank L is coated with hot-melt adhesive from wheel (29), Fig. 15 (not shown), and the block 15 is rotated 180 degrees to face the blank inwards. The former plus foil packet then moves radially outwards and presses the blank into the recess 30. The wing W, Fig. 24, is folded against the former by a stationary folder (303), Fig. 15 (not shown). Detectors 521, 522, turn off the suction at the blank applying stations if a blank is not present on the block. A pivoted bracket 309 forming a side of the recess 30 moves clear of the mandrel enabling radially advancing fingers 307 on a slide 252 and to one side of the plate 269, Figs. 15A, 17, to bend in the margin of the wing W to overlap the adjacent blank side and thus form a tube. The former now withdraws from the recess, the plate 269 holding the outer packet blank against the former and the slide 252 moving with the latter. Rotary and stationary tuckers (288), (290), Fig. 15 (not shown), folds down portions R 1 , and R 2 , Fig. 27, and a plough 291 folds down side flap R 3 . The final inward movement of the former causes a blade 257 to fold down the flap R 4 .