摘要:
The rewinding machine comprises: a path for feeding the web material (N); a first winding roller (11) and a second winding roller (13) defining a nip (15), across which the web material passes; downstream of said nip (15) a third winding roller (23) with movable axis, cooperating with the first winding roller (11) and the second winding roller (13) to form a winding cradle (22) for the rolls. An auxiliary winding roller (48) with movable axis is also provided, which can be inserted between the first winding roller (1 1) and the second winding roller (13) downstream of the nip (15).
摘要:
The machine comprises in combination: a winding cradle (7); an insertion member (29) to insert winding cores (A, A1) into said cradle; an ejector (39) to eject the logs formed from said cradle (7) causing them to roll on an unloading chute (41); a severing device (55, 53) to sever the web material after ejection of the log from said cradle. Disposed along the unloading chute is an aperture (43) elongated in a direction transverse to the direction in which the log is unloaded along said unloading chute. Moreover, the severing device (53, 55) includes a movable element (55) that is inserted into said aperture (43) to cause severing of the web material between the cradle and the finished log.
摘要:
The invention relates to a machine for producing tubular articles (T) by helical winding of strips of web material, comprising a spindle (4) and a winding member (7) to helically wind the strips (S1, S2) of web material around the spindle. To improve adhesion between strips pressure is applied to the overlapping turns of strips of web material by an ultrasonic generator (33).
摘要:
The rewinding machine comprises: a first winding roller (11) and a second winding roller (13) defining a nip (15) through which said cores are inserted and through which said web material (N) is fed; and at least one pair of motorized engaging members (57), to engage the ends of a winding core and transmit a rotational movement to the core during at least part of the winding cycle of each log. The engaging members and the first and second winding roller are produced and disposed so that the log being formed is in contact with said first and said second winding roller. Moreover, a third winding roller (17) is provided, defining a winding space with said first and said second winding roller, said third winding roller being movable to allow increase and completion of winding of each log in said winding space.
摘要:
The machine includes a feeding path for the logs to be cut and a cutting head arranged along the feeding path. The cutting head includes a coupling for a disc-shaped cutting blade and is designed to impart the disc-shaped cutting blade a rotary motion around the axis thereof and a cyclic movement to cut the logs into single rolls, and to allow the logs to move forward along the feeding path. The machine also includes at least a grinding unit, including at least one grinding wheel mounted onto a rotation shaft and co-acting with a side of the disc-shaped cutting blade to grind the cutting edge of the same disc-shaped cutting blade. A controlled approach system is also provided to move the grinding wheel towards the disc-shaped cutting blade.
摘要:
The rewinding machine comprises: a first winding roller (11) and a second winding roller (13) defining a nip (15) through which said cores are inserted and through which said web material (N) is fed; and at least one pair of motorized engaging members (57), to engage the ends of a winding core and transmit a rotational movement to the core during at least part of the winding cycle of each log. The engaging members and the first and second winding roller are produced and disposed so that the log being formed is in contact with said first and said second winding roller. Moreover, a third winding roller (17) is provided, defining a winding space with said first and said second winding roller, said third winding roller being movable to allow increase and completion of winding of each log in said winding space.
摘要:
A machine (1) for closing the tail end of logs of web material, comprising: a log advancing path (P); along the log advancing path, a tail end unwinding, positioning and sealing station (13), comprising an aperture (21) that extends downwards from an inlet (19) under the log advancing path; first mechanical ply-bonding members and second mechanical ply-bonding members, associated with said aperture.
摘要:
The machine includes a feeding path for the logs to be cut and a cutting head arranged along the feeding path. The cutting head includes a coupling for a disc-shaped cutting blade and is designed to impart the disc-shaped cutting blade a rotary motion around the axis thereof and a cyclic movement to cut the logs into single rolls, and to allow the logs to move forward along the feeding path. The machine also includes at least a grinding unit, including at least one grinding wheel mounted onto a rotation shaft and co-acting with a side of the disc-shaped cutting blade to grind the cutting edge of the same disc-shaped cutting blade. A controlled approach system is also provided to move the grinding wheel towards the disc-shaped cutting blade.