| 摘要 |
The invention relates to a device for forming the envelope of groups of cigarettes to form an inner and or outer wrapper of the cigarettes, or a so-called forming or wrapping wheel having driving device in which the input shaft (107) is connected to a drive shaft by means of a joint which is a non homokinetic joint for coupling drive shafts (108) with continuous rotary motion with input shafts (107) of transmissions (3) to transform the continuous rotary motion into a rotary motion advancing in steps alternating with dwell periods. According to the invention said joint comprises two degrees of freedom of which one is radial and the other angular between the two parts (110, 410) of the joint that may be coupled to each other and are mounted revolving integral with an output shaft (108) of a drive unit (8) and an input shaft (107) of a transmission (7, 3) respectively transforming the continuous rotary motion into a rotary motion in steps, the said shafts (108, 107) are arranged revolving around their axes (A1, A2) which are oriented parallel among themselves and are radially staggered among themselves.. <IMAGE> |
