GB646445A - Apparatus for erecting cardboard and like boxes, cartons, trays or the like - Google Patents

Abstract

646,445. Making boxes. ROBINSON, Ltd., E. S. & A., ROBINSON, P. N., and NAISH, W. J. Oct. 16, 1947, No. 27771. [Classes 18 and 94(i)] An apparatus for erecting boxes from and breaking the creases of pre-cut and pre-creased blanks comprises a former adapted to press on the box bottom panel to force it through an open bottomed die having means thereon to turn up end and side walls in sequence, and means for removing the formed box from the former below the die. The embodiment described includes means for breaking creases at the edges of a lid panel 29 and a front wall panel 22 of a blank. The blank, one of a succession, is fed from a hopper to the first position A, Fig. 1, on a table 32, Fig. 4, where it may be held by guide rods (not shown) and is advanced to the second position B by a longitudinally reciprocating rod 33 carrying pawls 40-42 which engage the blank. At the position B the lid panel 29 is pressed by a platen 35 and the bottom panel 21, end walls 24 and rear wall 23 and its extension 26 are all covered by a body platen 45. Fingers 43, 44 advance arcuately through openings in the table 32 to bend flaps 30, 31 of the panel 29 against the sharp edges of the platen 35. The wall 22 is bent onto the platen 45 by a similar finger 46. Their creases broken, the flaps bend back under their own resilience but the wall 22 is held in a rearwardly inclined position by a bar 65, interposed following the operation of the finger 46. The blank is fed to position C, where a platen which may be integral with the platen 45 again covers parts 21, 24, 23, 26, the wall 22 having entered a guide member 74. A finger 77 breaks the crease between the panels 29 and 23 and the blank is fed forward onto the die 38, Fig. 7, the member 74 positioning it in one direction and arms 87 which descend to engage opposite sides of the lid, positioning it in the other, the lid having been brought to a vertical position by a guide bar 121. A former 91 presses the blank downwardly when portions of the die 38, first fold up the ends 24, then side wall extensions 25, 26 on to the ends 24. Slots 28 in the walls 24 are opened to receive tongues 27 on the extensions 25, 26 by buttons 98 on the former 91 which press the material beneath the slots outwardly and fingers (not shown) on the former arms 92 pressing the material above the slots inwardly. Stripping fingers 108 operated by levers 110, 111 and gearing 112 from the shaft 95 remove the boxes to deposit them on a conveyer. The platens 35, 45, creasing fingers 43, 44, 46, 77 and positioning arms 87 and bar 65 are operated through levers and cams from a main driving shaft 64, the fingers 43, 44, 46, 77 being turned about their pivots 50 by a single crosshead 54. The speed of rotation of the formers may be varied to give a rapid traverse between forming operations. The Provisional Specification states that the body platen may remain permanently depressed and that the fingers opening the end wall slots, may be carried by the die; also that the stripper may be within the die.