摘要:
A reel-up (1 ) for reeling up a fibre web (W) continuously around a reel spool (5) into a machine reel (6), which reel-up (1) comprises: - a reeling drum (10) for forming a nip (N) with the machine reel (6) being reeled up, - a frame (20) which is arranged for supporting the machine reel (6) and to which frame (20) is connected a roller rail (23) along which the reel spool (5) operating as the core of the machine reel (6) is movable in the x direction by rolling bearing housings (58) of the reel spool (5), - in which reel-up (1) the fibre web (W) is reelable up oscillatingly into the machine reel (6), whereby - the roller rail (23) is arranged movable in the y direction in relation to the frame (20) for providing an oscillating path of the reel spool (5).
摘要:
The invention relates to a method and an apparatus in reeling up, in which a paper web or the like (W) is reeled around a center-driven reel spool (5), which is transferred from the primary reeling to the secondary reeling, in which reeling the reel spool (5) is transferred in accordance with the growth of the reel by means of a transfer device (7) at least at some stage of the reeling and the web is brought at said stage from below the reel spool (5) via a reeling nip (N1) formed by the reel spool (5) and a loop (1) of an endless supporting member. According to the invention the web (W) is guided around the reel spool (5) during the reeling via an auxiliary nip (N2) formed by means of the reel spool (5) and the roll (10, 10’).
摘要:
The invention relates to a method and a roll for measuring a web tension profile by a spiral inclined pressure sensor film, e.g., an EMFi pressure sensor film, which contacts the web at an inclination. The film has been oriented in such a way that its measurement region in the machine direction is equally long as or shorter than the coverage area of the web when using the roll for measuring a cross-sectional tension profile.
摘要:
The invention relates to a method in a reeler of a fibre web, in which method, the web (W) is reeled around a reeling shaft (21) into a web roll (22) by means of a reeling nip (RN) between a reeling drum (10) and the forming web roll (22). The structure of the web roll (22) is affected by a roll nip (N) provided between the forming web roll (22) and a separate roll (40) adjustable of its bow during reeling. The invention also relates to a device in the reeler of a fibre web, which reeler comprises a reeling drum (10) for providing a reeling nip (RN) with the forming web roll (22). The device comprises a separate roll (40) adjustable of its bow for proving a roll nip (N) with the forming web roll (22) for affecting the structure of the web roll (22).
摘要:
A method and an apparatus for controlling the cross-directional nip profile of a reeling nip in a reeler, in which the reeling nip (N1) is arranged by means of a reeling core or a growing machine reel (R) and at least one loop of an endless supporting member (1) continuous in the direction of the axis of the reeling core (5). To control the cross-directional nip profile of the reeling nip (N1), variables proportional to the tension of the supporting member are measured, cross-directional tension profile of the supporting member (1) is determined on the basis of said variables, and further, a cross-directional nip profile of the reeling nip is determined, said nip profile being controlled by adjusting the determined cross-directional tension profile of the supporting member (1).
摘要:
A method for measuring a nip pressure and/or a pressure profile, wherein a nip-forming roll is fitted with a pressure sensor under a coating layer which is protective and functions as a spring on top of the sensor, and the nip pressure delivers to the bottom surface of the coating a deformation proportional to the nip pressure and the deformation compresses the sensor, which responds to the deformation by generating an electric signal.
摘要:
A method and an apparatus for controlling the cross-directional nip profile of a reeling nip in a reeler, in which the reeling nip (N1) is arranged by means of a reeling core or a growing machine reel (R) and at least one loop of an endless supporting member (1) continuous in the direction of the axis of the reeling core (5). To control the cross-directional nip profile of the reeling nip (N1), variables proportional to the tension of the supporting member are measured, cross-directional tension profile of the supporting member (1) is determined on the basis of said variables, and further, a cross-directional nip profile of the reeling nip is determined, said nip profile being controlled by adjusting the determined cross-directional tension profile of the supporting member (1).
摘要:
A device for cutting a fibrous web by a pressurized medium, comprising: - a beam that is arranged essentially transversally to the direction of travel of the fibrous web; - a carriage that is adapted to move, to which a nozzle for cutting the fibrous web is attached; - a line (4) for conveying the pressurized medium to the nozzle the first end of the line (4) being adapted to be connected to a pressure feed and the second end of the line (4) being adapted to move in connection with the carriage. The device is characterised in further comprising a guide trough (13) for forming the guide of the line (4), that the line (4) is adapted to move in the guide trough as an essentially U-shape loop, when the distance between the first end and the second end changes according to the position of the carriage, and that the movement of the line is arranged to be provided by the movement of the carriage fitted in a linear module.