Patent GB-130577-A (GB)
Title: Improvements in or relating to Packet making and Charging Machines for Packing Matches, Cigarettes and the like.
IPC: B65B19/24
Filed: 1919-01-22
Abstract: 130,577. Aktiebolaget G. Arehns Mekaniska Verlistad. July 31, 1918, [Convention date]. Machines for making paper boxes. Relates to machines for making paper bags or containers, of the kind in which mandrels for forcing a sheet through a slot in a table are carried by a rotating drum and are arranged parallel to the axis of the drum, and comprises the provision of slides for folding the edges of the sheets on to the mandrels. Sheets of paper 1, Fig. 4, are contained in a box 2, Figs. 2 and 4, which is provided with a rising table 3 actuated by ratchet - mechanism. The top sheet is picked up by a suction-member 5, carried by a rocking tube 8 which is connected to a pump and is provided with an arm 9, connected to a camoperated link 10. The raised sheet is seized and deposited within registering-guides 30, 31, on a table A, by a gripper, consisting of a member 14, Fig. 4, and a pivoted spring-pressed member 22. The member 14 is provided with an extension 24 engaging a guide 26 and is carried by a lever 15, operated by a cam 20. The member 22 is formed with an extension 27 which co-operates with a cam 29 carried by plungers 141. When the arm 15 moves to the right, the gripper is raised by the action of the guide 26 and the member 22 is operated by the cam 29. When the arm 15 moves to the left, the cam 29 is lifted slightly to permit of the jaw 14 closing and seizing the sheet, and when the sheet is in position above the guides 30, 31, the cam 29 opens the jaws and the sheet is dropped. The sheet is then held by a plate 32 whilst adhesive is applied to two edges by a reciprocating member 142, Figs. 1 and 2, which transfers paste from a roller 56, arranged in a receptacle 55. The member 142 is secured to an arm 38 which is carried by a rocking lever 41 and is raised and lowered by a link 46. The plate 32 is resiliently mounted on a bracket 35 on the plungers. The plate and the table A may be formed with ribs and grooves for producing creases in the sheets. The sheet is transferred from the guides 30, 31 to a position above a slot 62, Fig. 2, in the table A by means of a pusher 58 on a lever 59. The mandrels 63, Fig. 2, are carried by an intermittingly rotating drum 64, each mandrel being formed from a tube of which the projecting part is, as shown in Fig. 11, squared to form the mandrel proper. The mandrels pass through the slot 62 in the table A and at each operation a mandrel presses a sheet into the slot and stops with the top face flush with the table, the sheet being thereby folded around three sides of the mandrel. The drum is then locked by an arm 140, Fig. 1, and slides 60, 61, Fig. 2, move successively over the slot and fold the upstanding edges downwards, the adhesive applied by the member 142 causing the edges to adhere. The mandrel whilst passing into the slot presses on a spring-supported 'bar which is caused bv a cam to descend with the mandrel until the latter is flush with the table and, after operation of the slides 60, 61, descends further to permit of the passage of the mandrel. For holding in contact the folded edges of the wrapper, each mandrel is associated with a pressing-bar 84, Fig. 2, secured to a bell-crank 85 on a rock-shaft 87 which is mounted in the drum 64. A spring for urging the pressing-bar towards the mandrel is connected to the bell-crank, and a rocking cam 89, 91, Fig. 2, adapted to engage arms 90, Fig. 1, on the shafts 87, is provided for separating the pressing-bars from the mandrels. When the slides 60, 61 have been operated, the cam-part 89 permits the pressing-bar to descend on to the mandrel, engagement being maintained until the drum has rotated through a half-revolution to the position Z, the pressing-bar being then raised by the cam-part 91 and the bag being stripped from the mandrel by the mechanism described below. While the bag is moving towards the position Z, the flaps at one end of the wrapper are folded inwards, the two side flaps being first turned inwards by means of a curved tongue and a reciprocating finger and the top and bottom flaps being then turned inwards by two other curved tongues. The flaps are caused to adhere by the adhesive applied to the wrapper by the member 142, referred to above. For stripping the bags from the mandrels, each mandrel is provided with a plunger 108, Fig. 11, having a flat part which lies in the flat part of the mandrel, the ends of the plunger and mandrel being normally flush The plunger is provided with a roller 111, Figs. 1 and 2, which runs on a stationary ring 112 until the mandrel reaches the position Z. The roller then registers with a gap 113 in the ring and is engaged by the forked end 116 of a lever 115 which on being rocked causes the plunger 108 to be forced out of the mandrel and to strip the bag from the mandrel. The above-described mechanism may be employed only for making bags; preferably, however, this mechanism is associated with the mechanism, comprising a drum 69, for charging each bag with cigarettes, matches, drinking- straws, or the like, and for closing the mouth of the bag.