Patent GB-826636-A (GB)
Title: Improvements relating to machines for filling or charging plastic or pulverulent explosive or other material into containers
IPC: B65B1/12
Filed: 1956-03-23
Abstract: 826,636. Container-filling machines. NIEPMANN, F., and NIEPMANN, F. [trading as MASCHINENFABBIK F. NIEPMANN & CO.], and DYNAMIT-ACTIENGESELLSCHAFT, VORM. A. NOBEL & CO. March 23, 1956 [March 31, 1955], No. 9232/56. Class 94(1). [Also in Group XXI] Apparatus for filling containers with plastic or powdered material comprises means for holding a plurality of containers side-by-side and simultaneously feeding the material into the containers, conveyer worms, which extend to the end of hollow open-ended tubes on to which the containers are thrust, being used to carry the material from a hopper. A rotor which carries the containers to the filling and closing positions is mounted on a shaft 3 between slotted plates 1, 2. Blocks 5 slidable in the slots 4 are connected to carriers 6, 6<SP>1</SP> which carry respectively semi-cylindrical parts 7, 8 of case holders. By moving the carrier 6 parallel to the shaft the holders are opened and closed. Explosive is fed from a hopper 9 through nozzles 10 by worms 11. Empty cases 12 are pushed by a ram 73 into the holders 7, 8 from a conveyer belt 70 fed by a shoot (not shown) and having an intermittent drive from a toothed wheel 72, Fig. 3. A toothed wheel 75 gives intermittent motion to the rotor bringing the cases pushed into the holders in position A, Fig. 2, to position B where they are filled. Rollers 14 guided in a cam 13, Fig. 1, mounted on the carrier 6<SP>1</SP> are moved upwards by a cam 17 through linkage and a lever 19 to push the cases over the nozzles 10. Springs 15, Fig. 1, clamping the carrier halves in the filling position are overcome in positions A, D, Fig. 2, by a pin 60 impinging on a cam 61. Lever 19 is loaded by a counterweight 20 on which weights 21 can be placed to obtain the desired filling of the cartridges. If filling is too rapid, the lever roller 22 enters a recess in the cam 17. The system of cams and levers shown in Fig. 5 controls the apparatus, so that after filling is completed, a lever 44 actuates linkage 42 to stop the worms 11. Electromagnetic reversing gear then reverses the movement of the worms to cut off the feed supply, whereupon lever 39 co-acting with cam 36 again stops the worm drive. The filled cases are then withdrawn from the nozzles by further movement of lever 19 and the rotor moves a step bringing the cases to position C, Fig. 2, where the open ends are closed. The next step brings the cases to position D from which they are expelled to a conveyer belt 48 by an elector 47. If the cases are not filled, the cams operate linkage 45 to stop the machine, the filling worms continuing to run until the cases are full. In a modification, Fig. 12, the worms 11 conform to the shape of the hopper 9 at their upper ends and have openings 82 in the spiral turns to equalise the pressure. To keep the filling level constant in the hopper, the worm shafts 83 carry knives 84 staggered in the horizontal and vertical planes and inclined to the horizontal. Guide grooves 85 for the filling are formed in the hopper walls 80. Hydraulic or pneumatic means may be used instead of the mechanical linkage system to move the cases on to the nozzles 10. The orientation of the machine may be in any plane. Specification 826,637 is referred to.