Patent GB-282558-A (GB)
Title: An improved apparatus for manufacture of boxes
IPC: B31B3/72
Filed: 1927-01-07
Abstract: 282,558. Jagenberg, E. Jan. 7, 1927. Corner strengthening-pieces; machines for applying corner strengthening-pieces; A machine for feeding, cutting-off, and applying binding strips to the corners of boxes is arranged to apply the strips either internally or externally at will and may be adapted to apply both internal and external strips simultaneously. As shown in Fig. 1, the anvil and the plunger 2 are reciprocated from cams 8, 9, 28 adjustable on the shaft 10 which also drives the feed rollers 12, 13 through another cam which engages an adjustable roller carried by a rack-actuating gear on the feed roller shafts, the feed rollers being shaped to bend the gummed strip into V-form and the strip being moistened by the roller 12 running in a water bath. When the strip is to be applied inside the box the strip is fed with its gummed side uppermost and the box is held in the recess of the plunger 2; the cams are adjusted along the shaft 10 so that only the cam 9 is operative to engage the lever roller 26 and the anvil is moved up to sever the strip and then press it against the inside corner of the box. The strip passes through a knife-edged V-slot in a plate 14 and is severed by a knife 15 carried by the anvil. If the strip is applied externally the box is laid on the anvil and the strip fed forward with its gummed side downwards while the cams are adjusted along the shaft 10 so that the cam 9 is inoperative; the cam 28 engages the lever roller 27 to move the plunger 2 downwards, a knife 16 carried thereby severing the strip which is then laid on the edge of the box; the anvil is then raised by the cam 8 to press the strip in position. In a modification, Figs. 6 and 11, by which strips can be applied either internally or externally or both internally and externally; the strips are fed at a vertical distance from each other by staggered feed devices 54, 55 and the box is carried by movable parts 32 slidably mounted on the sides of a fixed anvil 31 and forced upwards by springs 35. The upper surfaces of the parts 32 are inclined at an angle of 45‹, and in their lowest position are continuous with the upper surfaces of the anvil 31 while they are guided and constrained to move parallel to inclined slots 34 by pins 33 and interlocking toothed segments 37 which are centrally pivoted and have pins 38 engaging in openings in the parts 32. The plunger 40 reciprocates vertically in the machine frame and carries a part 41 movable horizontally in the plunger and fitted with a V-shaped cut. ting edge 42 pressed by a spring 43 against a plate 44 having a V-slot with a knife edge and a V-shaped cutting edge co-operating with a similar cutting edge at the edge of a slot in a plate 53 fixed to the machine frame. The plate 44 is carried by a member 47 slidable vertically in the machine frame and moved downwards against the action of a spring 49 when a roller 50 on the plunger engages the arm 51 of a pivoted bellcrank lever, the, other arm 52 of which engages the member. In applying an internal and an external strip the anvil is adjusted until the upper edge of the box to be stayed contacts with the plate 44 with the bottom of the box engaging the end faces of the anvil parts 32 and the machine is then put in operation, the upper stay strip 56 being fed through the plate 44 to the recess of the plunger and the lower strip 57 through the plate 53 to the interior of the box. Upon the plunger descending the edge 42 severs the strip 56 and the plunger presses it upon the edge of the box; the roller 50 then actuates the member 47 and plate 44 to sever the strip 57 which is laid on the anvil 31. Further movement of the plunger depresses the side parts 32 of the anvil which are moved rearwards by reason of the inclined guide slots 34, while the plunger part 41 is also moved rearwards by the spring 43 forcing its inclined edge against the inclined lowered face of the plate 44; by these means the box and the strip 56 are carried rearwards an amount equal to the thickness of the plate 44 and are brought into line with the end of the strip 57, the strips being then securely pressed into position. The side parts 32 of the anvil have ribs 36 which support the box and allow the plate 53 to become located between two of the ribs when the anvil is moved backwards for staying smaller boxes. A needle arrangement guided in the plunger and frame may be provided to engage the internal binding strip and prevent it becoming stuck to the knife edge carried by the horizontally-movable part of the plunger.