FI75621B - ANORDNING FOER SLIPNING AV EN PAPPERSMASKINS TORKCYLINDER. - Google Patents

Description

1 75621

Device for grinding the drying cylinder of a paper machine

The invention relates to a device with which the jacket surface of a drying cylinder of a paper machine is ground while the drying cylinder is stationary in the machine. The device includes guide rails attached to its felt roll by one or more mounting rings. The guide rails are traversed by a transfer motor driven by a transfer motor. A belt sander is attached to the transfer carriage, with which the grinding of the jacket surface of the drying cylinder is performed.

10 Such a device is used when it is desired to repair the jacket surface of a drying cylinder that is worn, soiled or otherwise uneven during use. With the device according to the invention, the grinding surface repair grinding is performed with the drying cylinder in place.

Stationary machining devices are known in which the grinding of the jacket surface of the drying cylinder is carried out with the drying cylinder in place. In the known method, a separate frame beam is mounted next to the drying cylinder, to which guide rails are attached, in which a grinding machine attached to the transfer carriage grinds the jacket surface of the drying cylinder. In the known method, the repair grinding of the surface of the drying cylinder is cumbersome because the frame beam must be sturdy and thus heavy, making its installation laborious and difficult.

25 The equipment is also very difficult to attach to the grinding object. Thus, the repair grinding of the jacket surface of the drying cylinder becomes long-lasting and cumbersome. The device according to the invention does not have the above-mentioned disadvantages.

In the machining device according to the invention, the body of the machining device 30 is solved in such a way that the felt roll or drying cylinder of the paper machine forms a frame beam of the machining device with guide rails attached with mounting frames or magnets. The features of the invention are set out in the appended claim.

2 75621

Some embodiments of the invention will now be described with reference to the accompanying drawings, in which: Fig. 1 shows the device in operation, seen from the side. Fig. 2 shows the device in an end view.

In the drawings, reference numeral 1 denotes a belt grinder driven by a motor 2. The device according to the invention consists of a transfer carriage 3 on guide rails 4. The guide rails 4 are fastened by fastening rings 5 to the felt roll 9 of a paper-10 machine. The transfer carriage 3 is driven by a transfer motor 6 via a transfer chain 7.

The device according to the invention operates in the following way. The guide rails 4 with the transfer carriage 3, the transfer motor 6 and the transfer chain 7 are fastened with one or more 15 fastening rings 5, a screw or a magnet to the felt roll 9 or to the drying cylinder 8. By moving the transfer carriage 3 When the belt grinder 1 and the motor 2 are attached to the transfer carriage 3, the grinding of the jacket surface of the drying cylinder can be performed. During grinding, the drying cylinder is rotated. Different types of machining units can be attached to the transfer carriage, such as a blade unit, milling head, grinder or belt grinder. The guide rail 4 can also be a felt roll 9, in which case separate guide rails 4 are not required. In this case, the flat surfaces of the transfer carriage must be of such a material that the surface of the felt roll 9 is not damaged. The guide rails 4 can also be adjusted so that the surface of the drying cylinder becomes either concave or convex.