Abstract: In the method for controlling reeling in a reel-up of a paper web, a paper web (W) is guided via a rotating reeling cylinder (1) around a reel spoil (2) into a reel (R) in such a way that the paper web (W) is passed onto the reel via a nip (N) between the reeling cylinder (1) and the reel (R). The paper web (W) running onto the reel is subjected to a load by means of actuators of the reel-up, which load affects the structure of the reel and is controlled by means of measured variables determined during the reeling process. A reel density is used as the measured variable, the reel density being determined during the reeling process continuously or at intervals, wherein it is possible to implement a closed control loop.

Abstract: A take-out roll, spreader roll or equivalent roll for a web-like material having three parts linked with one another, namely, a middle part and two end parts, one on each side of the middle part. The middle part and end parts are pivotal with respect to one another for the purpose of bending the roll into a desired curved shape. The middle part is constructed to operate as a revolving axle of the roll which is mounted revolvingly on support members by end bearings. The end parts are mounted in the area of their axial inner ends on the middle part by articulation devices. The end parts are further mounted in the area of their axial outer ends, revolvingly and movably in a radial direction on support parts which are separated from the revolving parts of the roll by bearings arranged inward of the end bearings in the axial direction of the roll.

Abstract: The invention concerns multi-layer web formation by means of a simple basic-stock system and in particular a method for regulation of the properties of the different layers in a stock system that comprises several layers by means of additional stocks. The source (M) of basic stock is divided into 2 . . . n separate component flows (M1 . . . Mn), with which additional stocks (B1 . . . Bn) are mixed so as to form homogeneous mixtures with the basic stock, and the homogeneous stock flows are passed further by means of pumps (A1 . . . An) through machine screens (s1 . . . Sn) into the inlet header of a multi-layer headbox (P).

Abstract: Method and apparatus for controlling the mixing proportions of feed streams being supplied to a headbox, using devices for sampling two or more of the feed streams upstream of the headbox and devices for measuring concentration of constituents in or other properties of those samples. A method of regulating one or more properties of a moving web, and especially a paper web during manufacture, employing the aforesaid method and apparatus are also disclosed.

Abstract: The invention relates to an arrangement for loading a deflection compensated roll (1) or other elongated member in a paper/board or finishing machine and for providing an articulation bearing assembly, the roll or elongated member being provided with a stationary support shaft (3) extending axially of the roll or the elongated member or with stub shafts present at the ends thereof, the support shaft ends or the stub shafts protruding from the roll or the elongated member and being mounted on a bearing block (9). The arrangement of the invention comprises at least one hydrostatic main loading element (4), which is mounted on the bearing block (9) and works on the support shaft (3) or the stub shafts of the roll (1) or other elongated member and which constitutes a loading element and, at the same time, an articulation bearing assembly for the roll or other elongated member.

Abstract: For an energy-saving type control, a value of a control low rate QP controlled by a flow control valve V is closer to a value of a flow rate required by an output side such as a power cylinder 8, a steering valve 9 or the like, to suppress a driving torque of a pump P. An excitation current I of a solenoid SOL is specified on the basis of a solenoid current instruction value IT based on a steering torque and a solenoid current instruction value IS defining a standby flow rate.

Abstract: A structural unit having a net member incorporated therein capable of preventing local application of undue force to the net member, to thereby increase reliability of the net member. An end section of a net member of a three-dimensional structure is treated so as to be reduced in cushioning characteristics and increased in hardness as compared with a portion of the net member positioned inside the end section. A frame constituting a part of the structural unit is provided with an end holding member so that an insertion port of an insertion gap of the end holding member is arranged in a particular direction or posture, resulting in the end section being readily held in the holding member by merely inserting the end section in the insertion gap. The end section is entirely inserted into the insertion gap, so that application of load to the end section may be carried out in a two-dimensional manner rather than a spot-like manner.

Abstract: The invention relates to a method in tail threading, in which a lead-in strip, tail (T) separated from the edge of a paper web is guided between two elongated mobile means in a paper web conveying machine and transferred forward between these two means along a given portion in the machine direction of the machine. The mobile means are belts (1, 2) between which the tail is transported. The neutral axes (N) of the belts (1, 2) are substantially on the same level.

Abstract: The present invention relates to a method for controlling a papermaking machine/board machine/tissue machine or the like, which papermaking machine/board machine/tissue machine or the like includes basic unit assembly groups, such as a headbox, a wire section, a press, a drying section, a coating unit, a finishing machine, etc. The machine control system of the papermaking machine/board machine/tissue machine or the like comprises a central processing unit (e.g. a unit for control room, alarm and other such functions), one or more process control units, and one or more input/output units, which are connected by control cables to the controlled units or actuators. In the method the process control units and/or input/output units of the machine control system are located in a mechanical machine part in connection with basic unit assembly groups of the papermaking machine/board machine/tissue machine or such.

Abstract: A change device of a reel-up in placed in the reel-up of a paper web in connection with the reel spool (2) forming the core of a new roll and located against the web (W) running onto the old roll (R). The change device comprises a guiding device (3) which is provided with nozzles or the like which are positioned and directed with respect to the reel spool (2) in such a way that they direct air jets (S) to the new end of the web following the cut-off point of the web (W) substantially over the full width of the web, to guide the web around the reel spool (2).

Abstract: The present invention provides a damping mechanism capable of varying the moving speed of an openable door or the like in stages as necessary. Such damping mechanism includes a damping body (1) installed with a damper mechanism and allowing a rotative shaft (3) to protrude therefrom; a plurality of pinions (4, 5) provided on the rotative shaft (3) and each having a different diameter from one another; and a rack member (2) including a plurality of racks (7, 8) respectively engaging with the pinions (4, 5).

Abstract: A connection element for at least two components (15, 7) of a conveyor support or guide structure, of the type comprising a body (1) presenting a first element (2) having first (3) for removably fixing a portion (15A) of one (15) of said components, and a second element (5) having second part (6) for removably fixing a tubular portion (7A) of said other component (7), in which the first and second fixing (3, 6) are distinct and separated from each other, the first fixing (3) having a plurality of slotted apertures (3A-D), and the second fixing (6) having an expansion member (8) able to expand within said tubular portion (7A) to fix it to said second element (5).

Abstract: The invention concerns a radial piston hydraulic engine (10), which includes a rotated box section (11), with which box section (11) a cam ring (12) is connected. The radial piston hydraulic engine (10) includes a fixed non-rotary shaft (14), with which a cylinder body (15) in a fixed position is connected. The radial piston hydraulic engine includes a distributor (13), which is connected with the box section (11) and rotates together with it, whereby through channels located in the distributor a pressurised medium is conducted to pistons (16a1, 16a2 . . . ) of cylinders (P1, P2 . . . ) controlled by the distributing valve, that is, by distributor (13), and that at least some cylinders (P1, P2 . . . ) include in connection with themselves a shut-off valve (70a1, 70a2 . . . ), which is used to make some pistons (16a1, 16a2 . . . ) inoperative.

Abstract: The invention concerns a method and a device in a paper machine, coating machine, intermediate winder, unwind stand of a slitter-winder, or in any other device for treatment of a web. In the event of disturbance, the web (P) is made to be wound in a controlled way around at least one web guide roll (18a).

Abstract: The invention concerns an equipment and a method in a twin-wire former, in which a partly pre-drained or non-drained fiber stock is passed to between the forming wires of the web former in the vicinity of the former roll (11) or of a water drain box, in which connection water is drained out of the stock web by means of the former roll (11) or the water drain box. The twin-wire former comprises a rib (20) in connection with the former roll (11) or the water drain box in the lateral area of the wires (H2), which rib has been fitted to control the running of the second forming wire H2) passed from the gap roll. By means of the rib (20), in the lateral area of the wire runs, the point at which said forming wire (H2) reaches contact with the first forming wire in connection with the former roll (11) or the water drain box is shifted further away in the machine direction. The rib (20) is an oblong structure, which has a maximal height (Hmax) in the middle area of the rib (20).

Abstract: The present invention relates to a cranial radiography apparatus, particularly intended for dental panoramic radiography, said apparatus comprising a first body part to which is connected a second body part (13) having thereto connected a third body part (14) to which is connected a fourth body part (15). To the opposite ends of said fourth body part (15) are connected an x-ray source and an x-ray detector. The body parts are connected to each other by means of pivot shafts aligned essentially parallel to each other. The pivot shafts are rotated by means of active actuators and their rotational movement is programmably controlled by means of a computer, thus permitting the x-ray source and the x-ray detector to be moved over any predetermined orbit. The apparatus further includes means for radiography using a cephalostat.