摘要:
The invention relates to a roll for a web forming machine. The roll includes a shell (10), with end pieces (11) at both ends of it. The end pieces (11) are arranged to be detachably attached to the shell (10), and in each end piece (11) there is an end plate (13) with a protruding shaft (14) in it. The end piece (11) includes a separate inner piece (17), in which there is an internal hole (18) corresponding to the protruding shaft (14) for attachment. In the inner piece (17) the end plate (13) is supported by at least one plate piece (19). The invention also relates to a method for manufacturing the roll for a web forming machine.
摘要:
The invention relates to a guide roll for a web forming machine. The guide roll (15, 15') includes a shell (10) of a sheet material, with end pieces (11) at both of its ends. In addition, in each end piece (11) there is an end plate (13) , with a protruding shaft (14) in it for a bearing arrangement (12) . The end plate (13) and the protruding shaft (14) are arranged as separate pieces. In addition, there is at least one shaped plate piece (19) between the end plate (13) and the protruding shaft (14), separate in the axial direction from the point of contact between the end plate (13) and the protruding shaft (14). The invention also relates to a method for manufacturing and using the guide roll (15, 15 ').
摘要:
This publication described a method for loading the bearings of an intermediate roll (13,14) of a multi-roll calender (100) and a multi-roll calender (100). The multi-roll calender comprises one or more sets of rolls (10) in which in at least one set of rolls the centre shafts (C 14 , C 15 ) of at least two calender rolls form a nip plane (P), whereby for normal calendering a bottom roll (15) is loaded on the nip plane (P) by first load means, such as bottom cylinders (16). For partial nip run, in said at least one set of rolls (10) of the multi-roll calender (100) the centre shaft (C 15 ) of the bottom roll (15) is transferred, without detaching from the multi-roll calender (100), aside from the plane (V 14 ) passing via the centre shaft (C 14 ) of the intermediate roll (14) above the bottom roll (15), and the bottom roll (15) is loaded against the intermediate roll (14) above it by second load means (18) at an angle a of 15-25°, advantageously at an angle a of about 22°, in relation to the vertical plane.
摘要:
The invention relates to a method in a multiroll calender comprising two sets of rolls and a multiroll calender comprising two sets of rolls. In the multiroll calender the lowest or second lowest intermediate roll of both sets of rolls is locked to a lower position, whereby, by loading the rolls above or below the locked roll, a required number of calendering nips can be provided for use. The invention also relates to a method for loading a calender roll of a multiroll calender and a multi- roll calender for carrying out the method.
摘要:
A bendable cylinder (1, 2), especially a spreader for spreading a web-like material, said cylinder comprising a continuos tubular cylinder jacket (1) of composite material and a fixed shaft part (2) on which the cylinder jacket is rotatably mounted with at least two bearings (31, 32) at either end, and said cylinder additionally comprising a bending mechanism provided at either end of the cylinder jacket and comprising an adjusting part (5), such as an adjusting screw, for bending the cylinder jacket, which cylinder has an inner bushing part (33) fitted at least partially inside the cylinder at either end of it, the bending mechanism being fitted in said bushing part, so that, to bend and adjust the cylinder jacket (1), the angular position between a shaft portion (22) and the bushing part (33) is changed, and the bearings (31 , 32) at either end are fitted between the inner bushing part (3) and an outer bushing part (30) fixedly arranged inside the cylinder jacket, and the inner and outer bushing parts, the bending mechanism and the bearings form a module (3) that can be mounted as a single unit.
摘要:
The invention concerns a method for detecting contamination and/or damage in a face (11, 12') running through a nip (N) or nips in a paper machine or in a paper finishing machine, such as a calender or a coating device. In the method, vibrations formed in connection with constructions of the machine are detected and processed. The vibrations are detected by means of at least two detectors (20, 21, 25). Based on the point of time of detecting of the vibrations detected by means of the detectors (20, 21, 25), the location of the damage and/or contamination (M; M1, M2) on the face (11, 12') to be monitored is determined. In the method, it is possible to detect vibrations in the frame of the roll (10, 12, 15) that forms a nip and/or in the bearings (14a, 14b) of the roll by means of a pair of detectors (20a, 20b, 21a, 21b; 22n). The location of the source of disturbance in the axial direction (X) of the roll is determined on the basis of a difference in phase ( phi ) between the vibrations arriving in different detectors in a pair of detectors. By means of detectors (20a, 20b) placed in connection with the bearings (14a, 14b) of the rolls to be monitored, it is additionally possible to monitor the condition of the bearings of the rolls.