Device for continuous reeling of a pulp we

Abstract

The device has a fibrous material web (1) guided over a support drum (2), which is supported at an end (3) of a vertical swinging arm (4). The fibrous material web is rolled by a winding device (5). Force between the swinging arm and a fixed counter part (6) is measured by a force measuring device (7). The swinging arm is clamped against the force measuring device by a clamping element (8) e.g. hydraulic cylinder and pneumatic cylinder. Clamping force is adjusted for clamping the swinging arm against the force measuring device by the clamping element.

Description

technical field [0001] The present application relates to a device for continuously winding a pulp web, especially a paper web, such as tissue, wherein the pulp web is transported on a reel and then wound onto a winding unit, the reel being in is supported at one end in each case on a vertical rocker and the load between the rocker and a fixed counterpart is measured by a load sensing device, wherein it can be tensioned relative to the load sensing device by means of a tensioning element rocker arm. [0002] The squeeze force in the nip between the horizontal roll and mandrel can be measured with this load sensing device located at the swing arm. Background technique [0003] A device of this type has been described in AT 411 590 B (Andritz AG). Here too, there is a load sensing device for determining the pressing force in the nip, which is positioned directly between the corresponding rocker arm and the stationary counterpart in the paper machine frame. Before the start ...

AI Technical Summary

Problems solved by technology

[0004] Pretensioning the load sensing device at a constant value before starting operation has the disadvantage that the pretensioning becomes weaker over time and due to vibrations

Thus, accurate measurements of nip forces cannot be made

Therefore, the pretension of the load sensing device must be checked and readjusted at any time, but these operations can only be carried out when the machine is stopped

Furthermore, the readjustment of the pretensioning is complicated by the inaccessibility of the tensioning elements

Furthermore, the pretensioning of the mechanical tensioning elements is also relatively imprecise

[0005] An additional problem is that heat during operation can cause length changes in the fastening elements used for load sensing devices and tensioning elements

As a result, the pretension also changes during operation, which leads to fluctuations in the measured values

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