| 摘要 |
The machine starts from a stack 1 of sheets 1a printed on the lower face, from which the lower sheet is progressively removed by means of mobile suckers 3 to arrange it on a double row of endless belts 7 and under a row of balls 8; the sheet 1a reaches a pair of rollers 11 and is folded in two by a descending blade 12 and so folded 1b leads downward and is taken up by grippers 13 that arrange it on pairs of pins 19, 19', 19" carried by a support 17 that carries out an alternating movement that conveys the folded sheet 1b to plates 23, 24 capable of lateral sealing and sealing of the bottom and to a punch that carries out punching 22 so that one of the sides of the sack remains open and thus represents a mouth. <IMAGE> |
