Patent GB-545192-A (GB)
Title: Improvements in and relating to machines for attaching pouxing spouts to cartons or containers for powder and the like
IPC: B21D51/42
Filed: 1940-10-03
Abstract: 545,192. Stapling. TRIGGS, W. W. (American Aluminum Ware Co.). Oct. 3, 1940, No. 14844. [Class 89 (iii)] [Also in Groups XVII and XXII] A machine for attaching a pouring spout to a carton or container for powder and the like comprises means for feeding a strip of spout blanks step by step with a completed part at the leading end of the strip, means for holding such part and severing it from the strip and means for moving the severed part through the holding means into engagement with a prepared portion of a wall of the carton; the wall of the carton is supported adjacent the holding means and the cartons may be supported in carriers which are carried in a turret which may be continuously rotated, the holding means being then moved synchronously with the carrier during the moving of the severed spout into engagement with the wall of the container in the carrier. As shown the cartons L, Fig. 64, are moved automatically from a charging device E, Fig. 1, into the carriers D which are carried by a continuously rotating ring 1, Fig. 26, rotatably mounted on the pedestal A and carrying gear 3 driven from the bevel pinion 6 geared to a motor 10. Work carriers.-Each carrier comprises a section 12, 16a, 16b, the section 12 being slidably mounted on rods 14 connecting the ring 1 and a bottom ring 15 and carrying a roller 12a engaging a fixed cam groove 12b, the section 16a being carried by a bracket 17 fixed to the ring 1 and the section 16b being carried by a rod 18 slidable in the section 16a and having a roller 20 which engages a lowering cam 23 and a corresponding raising cam 21, not shown. As a carrier approaches the device E, the openfronted section 12 is lowered and the section 16b is raised by the cams 12b, 21 so that a carton can be moved into the section 12 which is raised as the carrier rotates so that the carton is slipped over the section 16a while the section 16b drops after leaving the cam 21 and is raised by the section 12 and held against upward movement by the roller 20 engaging the cam 23 so as to clamp the carton between the sections of the carrier; the section 12 may have a spring-pressed bottom plate 24 to ensure the spout receiving portion M of the carton being accurately located with respect to the bottom of the carton irrespective of the thickness thereof. Slotting or scoring cartons.-The carrier then moves past a roller F, Fig. 3, having four blades, which form slits or scores 28, 29 in the carton, to the spout feeding, forming and inserting mechanism G, H, I, which may be duplicated as shown, so that the speed of the machine may be increased. Each of the spout feeding, forming and inserting mechanisms is carried on a frame N suspended from the turret and comprises a guideway 41, for a continuous strip O, Figs. 13 and 18, of spout blanks connected end to end, formed between two plates 42 43, the latter plate being hinged on a pin 44 on the frame and movable away from the frame by springs 80. Feeding strips.-The strip is fed by a pair of dogs 50 which engage behind the edges of a blank and which are pivoted to a block 46 slidable in the plate 42 and reciprocated therein by a slotted lever engaging a pin 54 in the block and oscillated from a cam wheel 57 journalled in the frame N and driven from the ring gear 3. Forming spouts.-The side portions of a blank are bent at right angles to the strip to form the wings 30 and portions of the central portion 32 are struck inwards to form prongs 31 at the end of a feeding operation by a fixed die 70, Fig. 9, disposed behind the guideway 41 and a complemental die 71 at the front thereof reciprocated in a bracket 72 on the frame N by connections from the cam wheel 57; during the advance of the die 71 the plate 43 is moved against the frame by a cam 81 on the die which has a pair of punches 76, Fig. 21, co-operating with recesses 77 in the die 70 for forming the prongs 31 and arms 78 which form the wings 30, a section 71b mounted in rods 71c slidable in the die 71 under the action of springs 71d clamping the blank strip firmly during the action of the die 71. After the forming of the wings and prongs the springs 80 force the plate 43 away from the frame to permit the flanged and pronged blank to be fed upwards to the spout inserting mechanism. Severing spouts from strip and inserting in carton.- The spout-inserting mechanisms move synchronously with the carriers D and each comprises a spoutholder having a channel 108 disposed above the guideway 41 to receive the spout and a ram 109 slidable with channel to push it through the channel so that the wings 30 and prongs 31 are inserted in the slits 28, 29 in the carton, cutter 110 on the ram co-operating with the upper edge of the die 71 to sever the completed spout from the strip. Each holder is mounted on an arcuate slide 84 mounted on bracket 86 concentric with the path of movement of the carrier and connected to a block 88 which is moved in the direction of the carriers by lugs 101 on alternate carriers co-operating with a bar 102 slidably mounted in the block; while the holders move with the carriers at the end of a strip-feeding movement, the rams 109 are reciprocated to insert the spout in the cartons by connections from a groove in a cam wheel 96; after the holders have been moved a predetermined distance the latch bar is retracted from the lug 101 by a stud 105 on the bracket 86 entering a slot 106 in the block and a cam slot 107 in the latch bar, the holders being then returned to their original positions by levers actuated by a second groove in the cam wheel 96 and engaging a slot 98 in a hook 99 mounted at the end of the block 88. Clenching of prongs against carton wall.-The section 16 of each carrier has an anvil block 124 formed with grooves 125 into which the prongs are forced by the ram 109 and bent against the wall of the carton.