| 摘要 |
<p>The supply group of a packing band from reels, with an automatic change of the reel, for an object-packing machine, comprises a supply track (13) along which the packing band runs to the zone of use(45) thereof, means for transversally cutting (14) the band (11) located at a start of the supply track, means (17A) for supporting a first reel (12A) of the band (11A) of slim packing material and means (17B) for supporting a second reel (12B) of band (11 B) of slim packing material. The group comprises a first entry track (20A) of the first band (11A) from the first reel (12A) to the supply track (13), a second entrance track (20B) of the second band (11 B) from the second reel (12B) to the supply track (13), first means for advancing (21 A) for introducing or extracting the front end of the first band (11A) to or from the supply track (13), second means for advancing (21 B) for introducing or extracting a front end (HB) of the second band (11 B) into or from the supply track (13). Further comprised is that while a band (11) is in a stage of use, the other band (11) is stationary with a front end thereof located at an entry to the supply track (13) and further, when the reel (12A, 12B) supplying the band (11) is finished, the band (11 A, 11 B) is cut and the means for advancing (21 A, 21 B) are activated in order to extract the front end of the cut band from the supply track (13) while the other means for advancing (21 B, 21A) are activated to introduce the front end of the other band (11 B, 11A) into the supply track (13).</p> |
