Metso Paper Inc.

Valmet Paper Machinery Inc.

Seppo Parviainen

Ilkka Rata

Juhani Vestola

Ilkka Eskelinen

Juha Isomets&auml;

Harri Ruotsalainen

Sami Kuparinen

Heikki Toivanen

Tuomo Juvakka

Matti Pajala

Mika Saari

Kari Rajala

Juha Isometsä

Iikka Rata

Jouni Kirjava

Mika H&auml;kkinen

Ville Nikkanen

Markku Vaanola

Equipment for changing a blade () in a coating device () changes several blades () arranged in a band (). The equipment includes reels () connected to the ends of the blade holder (), for holding the reeled unused and used band (); transfer devices () for moving the band () in connection with the blade holder (), and lifting devices () for lifting the band () up and lowering it into the blade holder (). Indentations () at least the length of the hollow shaft () are arranged at regular intervals on the band (), and are arranged to permit the blade () to be lowered into the blade holder ().

Equipment and method for changing a blade in a coating device

The operation of a doctor assembly () in a paper machine is monitored. In case of a malfunction, the paper machine's () control devices (-) are used to carry out the necessary measures for eliminating the malfunction and carrying out repair and/or protective measures. In addition, detector devices () are arranged in connection with the doctor assembly (), to detect a malfunction. The detector devices () are connected to the control devices () of the paper machine (), in order to carry out the said measures automatically. The invention also relates to doctor assemblies in a paper machine for implementing the method.

Method for monitoring the operation of a doctor assembly in a paper machine and a doctor assembly for implementing the method

A blade holder for a doctor and method for using the doctor is disclosed, in which in the front part there is a throat or similar for the doctor blade of the doctor and which blade holder has loading members connected thereto to press the doctor blade against the surface to be doctored. The blade holder further includes a relatively stiff, slightly flexible frame plate, which incorporates the attachment flange. The blade holder also includes loading devices for directing the force of the loading members onto the frame plate at a distance from the attachment flange, to bend the frame plate and thus press the doctor blade against the surface to be doctored.

Blade holder for a doctor and a method for using the doctor

A reeling device ( ), has a support base ( ), a support arm ( ), and a shaft ( ) mounted on the support arm ( ). One shaft end has a boss ( ) and the other end has a revolving frame ( ). Mounted to the device is a transit case ( ), within which the used doctor blades ( ) of a paper/cardboard machine are reeled on a roll. Raw material is supplied to a blade production plant, where the blades are produced, then transported to a paper/cardboard plant and stored in the plant prior to being mounted in connection with paper/cardboard machine rolls, where their condition is monitored during use. Used doctor blades are removed from the machine, packed in storable form with the reeling device, and are stored in the paper/cardboard plant. The packed used blades are transported away from the paper/cardboard plant and delivered into recycling, reuse or end use.

Equipment and method in handling of doctor blades for a paper/cardboard machine

A method and device for drilling holes into a mantle of a cylinder used in a paper machine are disclosed. The drilling device includes a base frame and a spindle box displaceable on support of the base frame towards a cylinder mantle to be machined. The spindle box includes a number of drill bits and a drive motor arranged to move the spindle box to produce a feed movement for the drill bits. In the spindle box, a second motor is arranged to rotate the drill bits simultaneously. The rotating drive of the drill bits is obtained by means of the second motor which rotates a drive belt arranged to pass via drive pulleys of the drill bits so that the drive pulleys and drill bits are rotated. Each drill bit comprises a horizontally displaceable slide frame. Coupling devices are arranged between each displaceable slide frame and the spindle box, by means of which each slide frame can be locked in the desired horizontal position so as to adjust the positions of the drill bits.

Method and device for drilling of holes into a mantle of a cylinder in a

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Jyväskylä, Finland

Seppo Parviainen