摘要:
A sheet stacker (1) comprises sheet conveyor arrangement (3) and a stacking bay (5), wherein sheets delivered by the sheet conveyor arrangement (3) are formed into stacks; the stacking bay comprising a stacker platform (19). The stacker platform (19) is provided with a vertical lifting and lowering movement with respect to a stationary supporting structure and is controlled to move downwards while a stack of sheets is formed thereon. The stacker platform (19) supports a stack conveyor (25) configured and controlled to perform at least an evacuation motion, to remove a completed stack from the stacking bay (5). The evacuation motion of the stack conveyor (25) is oriented such that a completed stack is moved from the stacking bay (5) onto an evacuation conveyor (53) arranged under the sheet conveyor arrangement (3).
摘要:
The splicing device (7) for splicing a trailing edge of a first web material (N1) to a leading edge of a second web material (N2) comprises members (41, 43) defining a feed path of the web material (N1, N2). The device also comprises a first cutting member (59) and a second cutting member (61), cooperating with the first cutting member. One of the two cutting members (59,61) is provided with a movement transverse to the feed path of the web material, to move the cutting member (61) from an operating position, in which it is in front of the other cutting member (59), to an idle position, withdrawn with respect to the feed path of the web material.
摘要:
The single facer (2) comprises a first corrugating roller (7) with a first rotation axis (A) and a second corrugating roller (9) with a second rotation axis (B). The two corrugating rollers form a corrugating nip (11), through which a paper sheet (F1) passes. The single facer also comprises a pressing member (13), co-acting with the second corrugating roller (9) and forming a pressure nip (21) therewith, as well as a glue applicator (23) co-acting with the con il second corrugating roller (9). With the second corrugating roller (9) a suction box (41) is associated, extending approximately parallel to the axis (B) of the second corrugating roller (9) and defining a suction area around the second corrugating roller (9). A series of laminar members (33), each of which is inserted in one respective of said annular grooves (31) of the second corrugating roller (9), are arranged between the pressing member (13) and the first corrugating roller (7) and extend in the respective annular grooves (31) towards the suction box (41).