Abstract:
The invention relates to a method for diagnosing the printing process. In particular, the invention relates to ascertaining a need for maintenance of the rollers, wherein the need for maintenance of the rollers is ascertained on the basis of the cross-directional profile of tension of the web in the machine direction measured from the web. The invention also relates to a method for aligning the web of a web printing process in which on at least one roller is installed at least one pressure sensitive sensor on the surface or under the coating of the roller. Preferably, said pressure sensitive sensor measures the location of the edge of the web, preferably from both ends independently.
Abstract:
The invention relates to a method in a reel-up of a paper web, in which the web roll (11) is formed around a reeling shaft and/or on support of carrier rolls or carrier belts, and in which a reeling drum (10) is used which forms a reeling nip (N) with the roll (11) to be produced. The reeling drum (10) is a deflection- adjustable reeling drum, the deflection of the roll shell (12) of which rotating around a central shaft is adjusted with at least one load means. According to the invention, in the method, the deflection of the roll shell (12) is adjusted internally of the shell (12) by loading provided with at least one load means (19) for providing nip force and/or nip-force profile prevailing in the reeling nip (N). In the method, the nip force and/or nip-force profile is adjusted with said at least one internal load means of the shell (12). The invention also relates to a device in a reel-up of a paper web. The invention relates to a method for manufacturing a roll, a reeling drum or equivalent which roll is crowned. A desired thickness profile/shape is turned in the shell of the roll from inside for providing the crown by means of inside pressurisation. The invention also relates to a nip roll/reeling drum of a paper or board machine, for crowning the roll shell (12) of which, the roll shell is arranged internally pressurisable and a thickness profile according to the desired crown is made to the roll shell (12) in the manufacturing phase.
Abstract:
Die Sendungen werden durch eine in Stapelrichtung verfahrbare Stapelstütze (11), die mit einem Unterflurband (9), auf dem der Stapel steht, gekoppelt ist und eine dazu parallele Stapelwand (7) an der Einstapelstelle in einer stehenden Position, ausgerichtet an einer Anschlagwand (8), gehalten. Die Sendungen werden mittels Stapelriemen (1, 2) und einer am Eingang der Stapelaufnahme in der Nähe der Anschlagwand (8) befindlichen und aus der Stapelwand (7) herausragenden Stapelrolle (4) zugeführt und eingestapelt. Dabei ist die Stapelrolle (4) auslenkbar gelagert. Die Stapelrollenlagerung ist über ein Verbindungselement (5) mit dem Kraftaufnehmer einer Einrichtung zur Messung des Stapeldruckes senkrecht zur resultierenden Riemenkraft auf die Stapelrolle (4) verbunden.
Abstract:
Es wird innerhalb eines Hauptregelkreises die Dicke jeder einzeln zugeführten und einzustapelnden Sendung ermittelt. Das Unterflurband (14) wird mit einer Stapelstütze (8) für die einlaufende Sendung (6) um diesen Betrag der gemessenen Dicke abzüglich eines bestimmten Betrages von der Stapelstelle weg verfahren. Nachdem die jeweilige Sendung (6) den Anschlag (10) erreicht hat, werden in einem statischen Korrekturregelkreis Stapelkräfte in verschiedenen Höhen im Bereich der Stapelrolle (7) gemessen und mittels Bewegung des Unterflurbandes (14) im Rahmen festgelegter Schwellwerte für die zulässigen Stapelkraftbereiche nachgeregelt.
Abstract:
The invention relates to a reeling machine for continuously reeling a strip of material, especially paper or card, onto a drum to form a roll. The inventive reeling machine comprises a moveable contact pressure drum, said contact pressure drum forming a reeling gap with the roll, at least one primary transport device, by which the drum can be moved along a first guiding way, and at least one secondary transport device, which guides the drum along a second guiding way. The invention is characterised in that, when a drum is changed, the new drum (35; 49) can be moved into a drum change position in advance by means of the primary transport device, so that a new reeling gap is formed between the new drum (35; 49) and the contact pressure drum (19). The strip of material (3) is also guided over a peripheral area of the new drum (35; 49) in the drum change position.
Abstract:
A device is proposed for intermediate stacking of letters (SE) in particular in letter processing facilities with a stacking roller (SR), stacking carriage (SW), underlying belt (UB) and a separation device. The stacking roller (SR) is mounted on the stacking carriage (SW) and a pressure gauge is provided in the vicinity of the stacking roller to measure the pressure of the stack against the pressure gauge. It is proposed that a device should be provided for detecting possible slants in the letter stack (ST); that where such a slant is detected, the stacking carriage (SW) and/or underlying belt (UB) are made to move until the slant is eliminated; that the stacking carriage (SW) should be displaced along the underlying belt (UB) until the letter stack (ST) exerts a certain pressure on the pressure gauge provided that the device does not report the presence of a slant.
Abstract:
A winder in a papermaking machine has a frame (40) with horizontal rails (42) which are positioned above a rotatable reel support drum (34), which is fixedly mounted. As a relatively large diameter wound paper web reel, or jumbo, is formed on a spool riding on the rails, the surface of the jumbo remains tangent to the top of the support drum as the spool moves from a position vertically over the reel drum to a position laterally displaced horizontally along the rail. Centerwind drive(s) (36, 38) control spool torque. As the jumbo increases in size, it is moved linearly away from the initial position, while maintaining the paper web reel rotatively supported and in a nipping engagement with the support drum. Nip pressure between the support drum and the jumbo is controlled by the force of gravity and the horizontal positioning of the jumbo along the rails. The positioning of the jumbo along the rail may be controlled by a conventional pneumatic or hydraulic cylinder, or a screw mechanism. An alternative embodiment winder utilizes primary (121) and secondary arms (123) to position the jumbo and its spool along the reel rails.
Abstract:
A paper feed roller (5) is divided into a first roller (5a) and a second roller (5b), and a slit (58) allowing the passage of about 10 to about 20 sheets of paper is defined between the first roller and a gate plate (57) opposing the first roller, so that a sheet of paper fed out via this slit can be supplied between the second roller (5b) and a separation pad (7) in contact with the second roller. A biassing force of a spring for transferring paper is converted by a slide cam sliding in a direction parallel to the paper feed roller, and a paper width detection sensor is assembled in a snap-in structure.
Abstract:
The module (3) comprises a frame having vertical pillars (30A, 30B), a rotary turnover structure (4) arranged horizontally between the vertical pillars and comprising rotation shafts (400A) supported by bearings (300A) with which the vertical pillars are respectively equipped. A motor (303B) applies a first mechanical torque to one of the rotation shafts when a folding package turnover is ordered in the machine. The module also comprises additional means (5) for applying a second mechanical torque to the other rotation shaft upon a folding package turnover.
Abstract:
Embodiments of a system and method for singulating articles in an automatic stack feeder are disclosed. The automatic stack feeder has a plurality of belts and at least one paddle, a vacuum powered singulation device and a sorting section. The automatic stack feeder receives a stack of flats from a container, moves the stack along the belts toward the vacuum powered singulation device, and the stack is singulated and sorted.