Method in Reeling Up and a Reel-Up

a reeling and reeling technology, applied in the field of reeling up and reeling up, can solve the problems of internal slippage in the reel, soft bottom of the reel, and reel production faults, and achieve the effect of better implementation

Inactive Publication Date: 2008-10-16
VALMET TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]The purpose of the invention is to provide a new reeling up method using a belt and a wire, by means of which the reeling can be better implemented by simultaneously preserving the advantages of known methods.

Problems solved by technology

In reelers utilizing a wire or a belt, problems are caused by the flaws produced in the reel during the primary reeling.
The belt nip is soft, which results in that the bottom of the reel can also become soft.
It is difficult to tighten the bottom of the reel in belt reeling only with the belt nip, which may cause for instance internal slip in the reel in the direction of the periphery of the reel and / or in the axial direction.
It is, of course, possible to increase the nip pressure of the belt nip by increasing the tension of the belt, but this requires both heavy and very expensive wire guiding rolls, devices for moving the belt guiding rolls and frame structures of the reel-up.

Method used

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Examples

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Embodiment Construction

[0016]FIG. 1 illustrates a continuously operating reel-up, where a paper web W, which is normally several meters wide and comes from a preceding section of a paper machine or a finishing apparatus for paper, travels via a reeling nip N1 to a reel R. The reeling nip is formed by means of a flexible supporting member 1 in the form of an endless loop, such as a belt or a wire. The supporting member 1 is guided via two guiding rolls 2 and 3, at the location of each of which the run of the member 1 turns to the opposite direction. In the travel direction of the web the first guiding roll 2 can form a “hard nip” with the reel being started at the initial stage of the reeling in such a manner that the supporting member 1 is in contact with the reel at a point where the member travels supported by the guiding roll 2 on the surface of the roll. The second guiding roll 3 can be a driven roll, i.e. a traction roll, or separate drives can be arranged for both rolls. The web travels guided by th...

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Abstract

The invention relates to a method and an apparatus in reeling up, in which a paper web or the like (W) is reeled around a center-driven reel spool (5), which is transferred from the primary reeling to the secondary reeling, in which reeling the reel spool (5) is transferred in accordance with the growth of the reel by means of a transfer device (7) at least at some stage of the reeling and the web is brought at said stage from below the reel spool (5) via a reeling nip (N1) formed by the reel spool (5) and a loop (1) of an endless supporting member. According to the invention the web (W) is guided around the reel spool (5) during the reeling via an auxiliary nip (N2) formed by means of the reel spool (5) and the roll (10, 10′).

Description

BACKGROUND OF THE INVENTION[0001]The invention relates to a method in reeling up and a reel-up.[0002]In the final end of a paper machine or a finishing apparatus for paper, a paper web which is typically several meters wide and which has been produced and / or treated in preceding machine sections, is reeled around a reel spool to form a machine reel. In this reeling up process a reeling cylinder that is bearing-mounted rotatable is typically used for guiding the paper web on the machine reel, wherein the nip contact between the reeling cylinder and the machine reel is utilized to influence the quality of the reel produced thereby. In a conventional solution the reeling cylinder remains stationary and the reel spool around which the reel is accumulated in nip contact is moved during reeling up in a supporting structure, for example by supporting the ends of the reel spool on reeling rails. The ends of the reel spool are affected by means of a suitable loading mechanism to adjust the n...

Claims

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Application Information

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IPC IPC(8): B65H18/26B65H18/22B65H19/22
CPCB65H18/22B65H18/26B65H19/2207B65H2301/41468
InventorKEMPPAINEN, MATTIRIIHELA, VESAKOJO, TEPPOMAKINEN, RISTONAATTI, ILKKATIILIKAINEN, MARKO
OwnerVALMET TECH INC