Method and machine for producing cigarettes, cigarillos or the like provided with filter mouthpieces

摘要

767,275. Cigarette and cigar making machines. KORBER, K. Dec. 1, 1953 [Dec. 17, 1952; Jan. 28, 1953; Feb. 5, 1953; July 25, 1953], No. 33352/53. Class 130 In a cigarette-making machine of the kind in which two cigarettes are aligned with a doublelength filter tip therebetween and joined together by an adhesive band, the resulting assemblage being bisected to form two mouthpiece cigarettes, multi-length filter rods 2, Fig. 2, are fed axially towards an adjustable stop 17 and cut into doublelength filters by a rotary cutting device 26 which does not make any cut adjacent the division point between successive filter rods 2, the double length filters being laid on a grooved drum 38, Fig. 1 with a cigarette on each side thereof to form an assembly which is transferred to a second grooved drum 44 on which adhesive bands are attached to the assemblies and wrapped therearound by folding means. The filter rods 2 are fed from a hopper 1 by a conveyer 8, Fig. 2, on to an endless belt conveyer 13. which feeds them through a tube 16 against the adjustable stop 17. Above the tube 16 is mounted a cutting device consisting of a stationary sun gear wheel 18 around which move planetary gear wheels 24 carrying disc knives 26. If the rods 2 are six times the length of a filter tip in a completed cigarette, two knives 26 are provided arranged so that the first knife cuts off a double length filter tip whilst the rod is stationary against the stop 17, which tip falls into a grooved drum 31, after which the remainder of the rod is advanced to the stop 17 and the second knife cuts off a second double length tip, no knife being provided at the position which coincides with the end of each rod. For filter rods of eight times the filter tip length, three knives are provided with 90 degrees intervals therebetween. The drum 31 has wide grooves therein and the filter tips are urged towards the rear of each groove by a spring strip 37, Fig. 1 and held in this position by suction passages 36 until transferred at the point Z3 into position between pairs of cigarettes in grooves on a second drum 38 in which the cigarettes are urged towards the filter tip by guide members 43. The compacted assemblies are transferred at 24 to a drum 44 on which they are held partly by suction and partly by gripper jaws 45, 46. The jaws 45 are fixed but the jaws 46 are connected to shafts 47, Fig. 3, pivoted in the drum 48 and actuated by levers 50 cooperating with a stationary cam 53 to close or open the jaws), whereby the cigarette and filter tip assemblies are gripped whilst being conveyed by the drum 48 and finally released for transfer to the drum 70. At the point of release the suction acting through passages 54, Fig. 3, is cut off and compressed air supplied thereto from a pipe 71 facilitates release of the assemblies. Whilst on the drum 44 adhesive bands cut from a reel 60 are applied to the assemblies, which bands are wrapped therearound as described in Specification 731,861 by radially moving folding arms 82, 83 on the drum 70, the united assemblies being bisected by a knife 88. In a modification, Fig. 6, the reel 60 is perforated by members 79 and applied to the drum 70 as a continuous band, the individual adhesive bands being torn therefrom at the perforations by the action of the folding means 82SP1/SP after the assembly has been delivered on to the band. The guiding means 43, Fig. 1, may comprise stationary plates but in a modification, Fig. 8, a guide disc 43' is carried in a spring-loaded manner by the drum 38 and is deflected inwards to urge the cigarettes into contact with the tip by rollers 43c carried by arms 43d pivoted at 43dSP1/SP and adjusted by a screwed rod 43f rotatable by a knurled knob 43q. A feeler device 95, Fig. 1. in contact with the continuous strip 60 for the adhesive bands stops the machine when the reel of material 60a is exhausted.