| 摘要 |
Apparatus for producing cigarette paper filter tubes is disclosed. The apparatus comprises an assembly for continuously forming cigarette paper into a hollow elongate tube and means are provided for sequentially cutting cigarette tube lengths from an advancing leading end of the hollow elongate tube. The apparatus additionally includes an assembly for forming and inserting a plug of filter material sequentially into one end of the cigarette tube lengths, and includes clamping means for holding the cigarette tube lengths during insertion of the plug of filter material. The assembly for forming and inserting the plug of filter material consists of an indexed intermittently moving endless belt carrying and advancing filter material, with the endless belt advancing the filter material which is in the form of a rope or tow incremental distances equal to a desired length of a plug of filter material. Severing means are provided for sequentially severing filter plugs of equal and constant length from a leading end of the filter rope or tow, and transfer means are provided for sequentially advancing filter plugs into a filter plug injection nipple in axial alignment with a cigarette tube length held in clamping position. Means are provided for reciprocally advancing the filter plug injection nipple into an open end of the clamped cigarette tube length and for retracting the nipple therefrom, and restraining means are provided to hold one plug of filter material within a cigarette tube length during retraction of the nipple.
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