Patent GB-1461560-A (GB)
Title: Packaging machine using two-blank carton system
IPC: B65B11/00
Filed: 1975-05-07
Abstract: 1461560 Packaging; feeding sheets STONE CONTAINER CORP 7 May 1975 [17 June 1974] 19197/75 Headings B8C and B8R [Also in Division B2] For forming a sealed package containing lading 16, two generally rectangular paperboard blanks 10, 12, comprising hingedly connected panels 18, 19, 20 and 28, 29, 30, respectively, the blank 10 having edge flanges 21 to 24, are each folded about the lading 16 into V-shape, one about vertical axes and the other about horizontal axes. The lading 16 is moved horizontally as by a ram 42 to engage the centre panel 18 of a vertically positioned blank 10 and to push it between vertical and horizontal rollers 134 and bars 136 which fold the side panels 19, 20 and the finges 21, 22, 23 about the lading 16 to form the blank 10 into V-shape whilst pushing the assembly on to a conveyer 48 which has been moved laterally by a piston and cylinder device 130 towards the rollers 134 and bars 136. The conveyer 48 is then returned laterally and advanced to position the assembly for folding the flanges 24. Movement laterally of the conveyer again by the device 130 presses the flaps 24 against spring mounted plates 148 (only one shown). After returning laterally, the conveyer 48 advances the assembly to the discharge station 60. Here a ram 64 pushes the assembly against a blank 12 and through a funnel 214, the blank 12 being marginally coated with adhesive. The assembly passes between horizontal folding rollers 218 to fold the panels 29, 30 over the lading, the package then being discharged by the ram 64 through a compression chamber 66 where the adhesive is set. Since the flanges 24 may spring outwardly after folding by the plates 148, further plates 234 (Fig. 11, not shown) are movable by piston-cylinder devices into the paths of the flanges 24 during operation of the ram 64. Each blank 10 is positioned to receive the lading 16, on a bar 90, Fig. 1, the blank being removed from a magazine 68 by a device comprising suction cups 80, or by means including pads (111, 112, Figs. 6 and 7, not shown) having teeth (114) which penetrate the blanks 10. The blanks 12 are removed from a magazine 70 by pusher mechanism (220, Fig. 10, not shown) or by mechanism 180 including suction cups, after the vertical margins of each blank have been coated with adhesive by vertically movable applicators 158. The mechanism 180 moves each blank 12 laterally to receive adhesive at its upper and lower margins from applicators 192, each blank 12 then being taken by a gripping mechanism 196 including piston activated jaws (204, Fig. 9, not shown) which carry the blank 12 into position to receive the partially wrapped lading 16. Feeding blanks.-The blanks 10 are supported in vertical planes in the magazine 68 by bars 263 engaging notches between their lower end flanges and are picked off by suction cups 80 reciprocable relative to a framework 76 which itself is movable vertically by piston and cylinder means 86 to carry the leading blank downwards for positioning at a package assembly station. In an alternative arrangement Fig. 6 (and Fig. 7, not shown) a vertically reciprocating framework has a blank edge engaging member 104 and extending downwardly from the member are legs 101, 102 which carry pads 111, 112 having teeth which dig into the leading blank 10 in the magazine. In descending, the member 104 engages the upper edge of the blank by a projection (106) and with the pads 111, 112, lowers it to the assembly station. The blanks 12 are engaged by a suction cup assembly 182, 184, 186, similar to that for the blanks 10, which feeds each one horizontally to gripper jaws 198 (Figs. 1, 9) on a framework 199 which take over from the suction cups and feed the blank to a combined assembly and discharge station. In an alternative arrangement, the suction cup assembly is replaced by a horizontally reciprocating edge pusher (222, Fig. 10, not shown) which feeds the blanks to the grippers 198.