FI90522B - Process pertaining to a reeling device - Google Patents

Description

90522

Method on a winder Förfarande vid rullstol 5

The invention relates to a method of winding a paper web or the like, in particular in a pop-type winder comprising a first rotating roll, for example a winding cylinder and a second rotating roll, for example a tampon roll, forming a nip into which the web is introduced and after which the web is wound. a second rotating roll supported by its bearings on the winding rails such that at least a portion of the nip pressure acting on the nip is generated by a force component due to gravity, in which method the second rotating roll is transferred from the web wrapped around it to a complete roll, said full roll roll, the roll rails are set at the desired angle, a new second rotating roll, already accelerated to the same circumferential speed as the first 20 rolls, is placed on the support of the roll rails n and at the same time nip contact with the first roll and the web is cut off and its rotation is started around a new second rotating roll.

With regard to the state of the art, reference is made to FI patent publications 49276 and 69818:; 25 and GB application 2009108, which disclose a method in a winder in which, when a roll is filled into a finished full roll, the finished roll is moved to an exchange station and the winding rails or the like are tilted to a desired angle to receive a new roll.

30 In the case of replacement of some reels, eg pope reel, the primary ... on the secondary rails, discontinuities are easily caused between the winding cylinder and the tampon roll, e.g. line pressure spikes, which cause bottom rejection.

It is an object of the invention to provide a reel in which the above problem does not occur. The object of the invention is to provide a reel in which there are no discontinuities causing a bottom wreck.

2 90522

In order to achieve the above and later objects, the method according to the invention is mainly characterized in that before moving the full roll to the exchange station, the second winding rails, which are at least partly an extension of the rolling rails, are moved at the same angle as the rails, so that the second rotating roll or full roll can move over the joint.

Another preferred embodiment of the method according to the invention is mainly characterized in that before moving the full roll to the exchange station, the angle of the winding rails is adjusted so that the second rolling rails, which are fixed, form an extension of the rolling rails so that the full roll can move over the joint.

In the invention, the winding of the track on the spool roll is started against the winding cylinder 15 at a point where the force component in the direction of the center of the winding cylinder of the traction force applied to the spool roll is suitable, forming a line load.

The change of the force component is achieved in several different ways, e.g. by adjusting the inclination of the winding rails or forks. As the swab size increases, the slope is reduced to fit.

According to the invention, discontinuities occurring in the exchange or transfer operation of the paper winder from the primary rails to the secondary rails can be eliminated, e.g. by starting winding directly from the rails.

When the full spool rotates on the secondary rails, the primary rails can be moved to the optimal inclination position for line pressure so that the line load, i.e. line pressure, is desired across the entire machine in the -30 direction.

In one embodiment, when the full tuber rotates on the secondary rails, it is moved to the braking position, after which the primary rails can be moved to the optimal inclination position for line pressure so that a line load, i.e. line pressure, is desired across the entire machine. In this embodiment, as the size of the spool increases, the inclination angle of the primary rails decreases as the winding li 3 90522 progresses. Switching, i.e. transfer to the secondary rails, takes place by moving the secondary rails to the corresponding inclination angle with the primary rails, whereby the replacement tampon rolls over the splice point, during which the primary and secondary rails move synchronously, adjusting the line load by changing the inclination angle.

Other advantages are also achieved with the system according to the invention. For example, there is no change at the beginning of rolling and the load situation can be seen in nature by observing the inclination of the rails.

10

In the following, the invention will be described in more detail with reference to the figures of the accompanying drawing, to which, however, the invention is in no way narrowly limited.

Figure 1 schematically shows an arrangement for achieving a uniform line or nip pressure.

Figure 2 schematically shows an embodiment of an arrangement according to the invention suitable for use in endless winding.

Figure 3 schematically shows another embodiment of an arrangement according to the invention which is suitable for use in endless winding.

i "25

Figure 4 schematically shows an arrangement according to the invention adapted to an exchange event.

As shown in FIG. The line load 35 is adjusted by changing the position of the tampon iron 20 relative to the winding cylinder ____ 15 so that the nip point N changes and at the same time the magnitude of the force component Gr causing the line load 4 90522 changes. The easiest way to change the force component Gr is to adjust the inclination of the winding rails 10, i.e. the angle α. The line load is then Gr - G · sin a, i.e. the tampon iron 20 own weight and the weight of the web wound on it provide 5 line or nip loading is naturally reduced to maintain a uniform line or nip load, preferably from about 20 ° to 1 °.

The inclination angle α of the rolling rails 10 is adjusted by the actuator e.g.

10 by means of a screw jack 30, a cylinder or the like. Many known arrangements are suitable for adjusting the angle of inclination α. The winding rails 10 are pivotally attached to the winding cylinder 15, preferably the winding rails 10 are articulated to the center of the winding cylinder 15.

15

According to Figure 2, the arrangement according to the invention is suitable for use when the winding is endless. Figure 2 shows a structure using two systems of a rolling cylinder 15 - a rail 10. In Fig. 2, the guide rollers of the web W are denoted by reference numeral 25. According to Fig. 2, as the size of the tampon 20 increases, the angle α is reduced. When the first spool 20 is filled, the web W is fed to a second winding system which operates in a corresponding manner.

Figure 3 shows another possibility for a system in which two systems of winding cylinders 15 - rail 10 are used. The web W is guided through the guide rollers 25 to the winding cylinder 15, from there further to the spool roll 20 supported by the rail 10. At the end of the winding, the web W is fed to another winding system. Figure 6 shows in broken lines the position of the rails 10 and the tampons 20 when the tampon 30 is full.

According to Fig. 4, e.g. the change of the pope winder from the primary rails 10 to the secondary rails 11 is performed by the change of the primary rails 10, whereby the full tampon 21 rotates on the secondary rails 11. The full tampon 21 is transferred to the braking station, 5,90522 can be moved to the optimal position for line pressure. The line pressure, i.e. the line load Gr, is uniform in the entire transverse direction,

Gr - G · s in a. As the tampon 20 increases, the angle α is reduced as the diameter of the tampon 20 continues to increase. The transfer to the secondary rails 11 takes place by moving the secondary rails 11 to a corresponding angle o with the primary rails 10, whereby the full tampon 21 rolls over the joint point, during and after which the primary rails 10 and the secondary rails 11 move in synchronism to adjust the line load. The secondary rails 11 can also be fixed, in which case the line load is adjusted in question. on rails 11 10 normally by means of rolling forks.

The invention has been described above only with reference to some of its preferred embodiments. However, this is in no way intended to limit the invention to these examples only, but many modifications and variations are possible within the scope of the inventive idea defined by the following claims.

Claims (3)

A method for winding a paper web or the like into a roll, especially in a pop-type wheelchair comprising a first rotating roller, for example a rolling cylinder (15) and a second rotating roller, in particular a tambour roller (20), which forms a nip (N) into which the web (W) is inserted, and in which nip a nip pressure (Gr) acts on the web (W) and after which nip (N) the web (W) is wound onto said second rotating roller (20). ), which is supported from its bearings against the rolling rails (10) in such a way that at least a portion of the nip pressure (Gr) acting in the nip (N) arises from the force component caused by the earth's pulling force, and second rotating roll (20) being completed filled with web (W) wound around it, into a full roll (21), said full roll (21) is transferred to a switching position, detached from the nip contact with the first roll (15), the rolling rails (10) are placed at the desired angle (a), a new second r repetitive roll (20), which is fully accelerated at the same circumferential velocity as the first roll (15), is positioned to be supported by the roll-off rails (10) and on the same thread to nip contact with the first roll 20 (15) and the web (W ) is cut off and it is started to wrap around the new second rotating roller (20), characterized in that before the full roller (21) is transferred to the switching position, the other rolling rails (11) are transmitted, which at least partly constitute an extension to the rolling rails ( 10) at the same angle (a) with the rails (10), whereby the second rotating roller (20) or the full roller (21) can be moved over the extension site. Method according to claim 1, characterized in that the rolling rails (10) and the other rolling rails (11) move synchronously by thereby regulating the line load. A method of winding a paper web or the like into a roll, especially in a pop-type wheelchair comprising a first rotating roll, for example a rolling cylinder (15) and a second rotating roll, in particular a tambour roll (20), which form a nip (N) into which the web (W) is inserted, and in which nip a nip pressure (Gr) 9 90522 acts on the web (W) and after which the nip (N) web (W) is wound onto said second rotating roller (W). 20), which is supported from its bearings against the rolling rails (10) in such a way that at least a portion of the nip pressure (Gr) acting in the nip (N) arises from the force component caused by the earth's pulling force, and dA in the process. the second rotating roll (20) being completed with web (W) wound around it, into a full roll (21), the full roll (21) is transferred to a switching position, detached from the nip contact with the first roll (15), the rolling rails (10) are placed at the desired angle (a), a new second rotating roller (20), which is fully accelerated at the same circumferential speed as the first roller (15), is positioned to be supported by the roll-off rails (10) and at the same time to nip contact with the first roller (15) and the web (W) is cut off and it is started to wrap this around the new second rotating roller (20), characterized in that before a full roller (21) is transferred into a switching position, the winch (a) is controlled by the rolling rails (10) sA, the second rolling rails (10), which are stationary, form an extension to the rolling rails (11) in such a way that a full roll (21) can be transmitted over the extension site. 20