| 摘要 |
1,181,541. Endless conveyers. PHILIP MORRIS Inc. 30 March, 1967 [14 April, 1966], No. 14609/67. Heading B8A. [Also in Divisions A2 and F2] An apparatus for assembling an elongate tubular article composed of at least two elongate body portions enclosing an elongate strip of material therebetween, comprises a first conveyer, e.g. a lower chain assembly 32, for engaging one such elongate body portion 13, a second conveyer, e.g. an upper chain assembly 30, for engaging the other body portion 11, means for advancing such body portions when engaging the conveyers, and means for supplying an elongate flat strip of material 14 between such body portions; said first conveyer having a straight run portion for co-operation with a portion of said second conveyer spaced from said straight run portion to force such elongate body portions into mutually interfitting relationship to form an elongate tubular article. The chain assemblies 30, 32 comprise links 44 supporting blocks 50 that run in guide tracks 70, 71, 72, 73, the chains being driven in synchronism by sprockets 34, 36. The blocks 50 include registration pins 58 for engaging shoulders 90 formed in the body portions 11, 13. As exemplified, the body portions 11, 13 comprise shell sections having internal ribs 80 and smoke barriers 81 formed therein, and the continuous strip 14 comprises filter strip material. One or other of the body portions 11, 13 has adhesive applied along its edges that mate with the other body portion prior to feeding to the apparatus, and the united tube formed is subsequently cut into sections to form tobacco-smoke filters. In another embodiment (Figs. 7, 8, not shown), the upper chain assembly 30 is replaced by a power driven registration wheel (170) that similarly includes registration pins (172) and is synchronized with the lower chain assembly (160). |
