FI119193B - Apparatus, its use and arrangements for handling an endless web in a sheet forming machine - Google Patents

Description

119193

THE DEVICE, ITS USE AND THE ARRANGEMENT FOR THE PROCESSING OF A TISSUE THREAD BY A BREAKING MACHINE

The invention relates to a device for inserting a web loop into or out of a web loop of a weaving machine 5, the device having a web loop being substantially adapted to replace the web during assembly or removal, comprising: - a frame and 10 - at least one bracket for tissue loop.

Further, the invention also relates to a similar arrangement and use of a device for treating a tissue loop.

15

For example, paper, board, tissue and pulp machines, more generally web forming machines, from time to time process various tissue loops. This happens, for example, during maintenance outages, whereby the tissues are replaced. The old tissue can either be removed as a closed loop for reoperation or it can be cut off. The new closed loop of fabric is threaded from the side of the machine to the position corresponding to the fabric • ·: 1 · 2.

· «· • · · • • • •; 1. 25 However, the current methods of treating tissue loops are all «·» ·. half awkward. The problem, for example, is that of tissues .3. huge size and surprisingly large weight. Tissue widths • φ · on current machines can be up to 8-12 meters and masses up to nearly 1000 kg. In addition, • 1 · • ». ···. 30 wide machine direction and also its height can reach up to 5 · 10 meters.

Disassembly and Arrangement of the New Tissue Loop in Tissue Cycle 2: T: and also the carrying of the Tissue Loop along with the machine 35 has been accomplished in the prior art by a number of systems. It is known to use a bridge crane whose hooks are provided with fabric support lugs. Known are also attached to the machine 2 119193 between the side frame and the wall are sheathed. Also known are machine or even tissue position specific tissue replacement devices / frame structures. Tissue replacement devices require design work and are 5 error prone and cost intensive.

Regardless of the mode of operation, the burden of tissue processing, handling-related safety issues, and time wasted during processing is a problem. In addition, the processing binds the work of 10 multiple people. The time spent on maintenance outages and, consequently, on tissue replacement is very limited. When handling bulky tissue near the machine by cumbersome methods, space and time are taken away from other maintenance activities. There are a number of different interchangeable fabrics in the papermaking line, and each of the 15 items generally has a uniquely shaped tissue twist.

As a state of the art for handling a tissue loop, the Applicant's Finnish Utility Model Registry Number 3709 is disclosed. Of this, 20 are known to support a wire mesh exchanger with a · · ϊ, ϊ, ϊ crane. The Applicant's Finnish Patent Application Publication ίe * ϊ FI991171 (PCT Publication No. WO 00/71814) discloses a conveyor belt changer with wheels ·· ·: *. When changing the belt • ·:: *: The machine can be driven inside the paper machine. In addition, there are problems with the replacement device as well as the use of the device as well as the fabric shoe.

It is an object of the present invention to provide a device for inserting or removing a loop of fabric in a web-forming machine. 30 sex cycles, which, among other things, diversify the number of tissue cycles that can be handled by one and the same device. In addition, the invention accelerates tissue processing and improves V * associated safety. Characteristic features of the device according to the invention are disclosed in claim 1 of claim-35 and claim 9 of the arrangement. In addition, the invention relates to the use of a corresponding device for treating tissue.

The device according to the invention includes a body and movable members arranged in connection with the body for fitting a tissue loop to a tissue thread replacement mode and thereby for mounting or removing the tissue loop independently of the tissue cycle exchange mode.

According to one embodiment, the movable members may consist of at least one arm 10 adapted to move relative to the body. An arm-mounted bracket is provided for the fabric loop. The position of the bracket can be changed, for example, so that it is, for example, at one corner of the tissue cycle.

According to one embodiment, the frame may comprise one or more blocks in which the arms are closed. The frame may be adaptable to a lifting device for adjusting the position of the frame and thereby the height of the fabric loop. Hereby, the processing of the tissue loop can easily be performed with the same device 20 also at elevated tissue turns. Still «·! :! according to one embodiment, the frame and bracket structures may

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• · · ί # ί: Be telescopic. There are many benefits to this too. The device: can be resized to allow easy storage and handling of multiple widths of fabric.

• • I ·:: *: 25 Thanks to this feature, the device can also be easily arranged · *: "** · inside the tissue loop.

With the invention, tissue replacement devices are stabilized and replaced. the speed, safety and usability of the measures are improved.

• · · *. The invention, which is not limited to the following embodiments, will be described in more detail with reference to the accompanying drawings in which: · 4,119,193

Fig. 1 shows a device according to the invention with the telescopic parts retracted and a lifting device adapted thereto,

Fig. 2 shows a device according to the invention with the telescopic parts extended and a lifting device fitted to the device,

Figures 3 and 4 are perspective views of the device viewed from different directions with the tissue fitted around the device; 10 Figure 5 is a perspective view of changing the tissue to an up position with the device of the invention; Figs. 6a and 6b are simplified cross-sections of the device of the invention shows a reduced cross-section of the device according to the invention when applying several frame blocks.

Figures 1-5 show one embodiment of the device 20 of the invention. The device 10 is easy and safe to handle when the fabric loop 11 is replaced with a paper machine 12 or the like. As is well known, the papermaking machines 12! ***: have a plurality of fabric turns at 14 different positions, the shapes of which may · · • differ greatly from one another. Figure 7 shows a simplified * ·· ·: · *; 25 Examples of Tissue Circuit 14 Defining Bodies 13.1 to 13.5.

; ***; The fabric rotation 14 viewed from the side of the papermaking machine 12 may be defined, for example, by rotating bodies, such as rollers or cylinders 13.1 through 13.5, through which the fabric loop 11 • ·. * · *. is intended to travel on the machine. With fabric 11 on the machine • · ··· *. When installed, these rotating bodies 13.1 to 13.5 are • · usually inside the fabric loop 11. Paragraphs 13.1 to 13.5 • · * "** may additionally be viewed from 12 sides of the machine ··« V: at least partially in two or more planes relative to each other i ·· ί ,,, ί, both in height and in horizontal direction. in this connection, the fabric loop 11 may thus need to be supported at different locations both longitudinally and vertically of the machine.

In addition to the rotary bodies 13.1 to 13.5 shown in Figure 7, the tissue rotation 14 or the tissue rotation 14 may also be defined, for example, by various machine loop control and maintenance means. Some examples of this may be various washers, vacuum cleaners, and tensioners. The means may then be either inside or outside the tissue loop. 10 There are end-to-end fabric rotations throughout the machine, such as a wire section, a press section, a drying section, and a calender. The fabric loop may be, for example, a wire, felt, metal belt, transfer belt or belt (of polymeric material), and is not limited in any way by the invention. In general, it is possible to speak of an end-to-end closed loop, regardless of its manufacturing material, method, position or function on a forming machine.

Figures 1 and 2 show an example of a device 10 according to the invention for treating a web loop during maintenance operations on a web forming machine 20. In Figures 1 and 2, the device 10 is presented without a * •, · .ϊ loop. In its basic form, device 10 includes • · *!,! I frame 15 and radially attached frame 15 ·· ·! protruding movable members 16.1 - 16.4, 17. The body 15, whereby S S *: can support most of the mass of tissue to be treated, can be formed as known per se, for example a tower crane-like ··· lattice structure, e.g. The cage body 15 may be provided with a wheel according to an embodiment, so that it can be moved • · .1. in machine and transverse directions, for example, without actual transmission ··· *, 30 devices.

• · · • · * · «· ···

By means of movable members 16.1-14.4, 17 ··· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · The adaptability of the elements 16.1 to 16.4, 17 provides, among other things, the surprising advantage that one and 6119193 of the same device assembly 10 can practically handle all of the tissue loops at each side reversible tissue rotation position of the machine, for example, width of tissue loop.

5

The movable members include at least one arm assembly 16.1 which is movably adapted to the body 15. According to one embodiment, the shaft 16.1 may be located at both ends of the frame 15. In addition, the arms may also be located between the ends of the body 15 if necessary for some reason (not shown). The movement of the arms 16.1 to 16.4, which in this embodiment are now four (two on each side of the body 15), with respect to the body 15, can be very varied in view of the basic idea of the invention. In the embodiment shown, the arms 16.1 to 16.4 have a pivot 22 which is at their attachment points to the body 15 of the latter. The pivot points may also be located elsewhere on the arms or may be located on the body 15 instead of the attachment points, for example on the arm extension protruding from the body 15. The body 15 may have flange-like lugs for securing the arms 16.1 to 16.4 and articulating to the body 15. Between the suitably selected point of the shaft 16.1 -20 16.4 and the body 15 there may be: Y: for example a hydraulic cylinder 25 for turning the shaft 16.1 to 16.4: Y (Figures 6a and 6b). For the sake of clarity, the cylinders have been omitted: * · *: 1-5.

• · • · f · # * * · · * · · • · *; Each of the arms 16.1 to 16.4 is fitted with at least one body ··; ***; Elongated bracket 17 parallel to 15 for weft ·· »loop 11. The support 17 may be an elongated tubular beam *. * »Ki. It may be, for example, Teflon or something else »». ** ·. corresponding low friction material. Bracket 17 cylindrical • »« ·· *. The circularity 30 causes the fabric 11 to move smoothly over it as the fabric 11 moves relative to the elongate body 15.

The support 17 may be formed, for example, by an extendable · * · V 'tube beam and thus be telescopic. The body 15 may also be of M · telescopically extendable type. The telescope-35 can have 1-6 booms, whereby the basic length of the body 15 can be pulled up, for example 2 to 6 m. In Figure 1, the body 15 and 7 119193 support booms 17 are shown in their retracted position. The telescopic arrangement of the body 15 and the supports 17 makes the size of the device 10 surprisingly small. This facilitates storage of the device 10 at the paper mill. Furthermore, the arrangement of the tissue to be treated 511 around the device 10 and its removal from the device 10 is very convenient due to the telescoping. Another advantage of telescoping is also that the device 10 can handle tissues of different widths.

Also, the arm 16.1 to 16.4 may be telescopically extendable and thereby provide for movement of the latches 17 relative to the body 15. In the embodiment shown, there are three telescopic extensions 23 on each arm 16.1 to 16.4. By articulation 22 of the shaft 16.1 to 16.4 into the body 15 and its extensibility, the deformability of the device 10 for various tissue rotations is achieved. The telescoping and articulation 22 of the arms 16.1 to 16.4 can change the distance and angle of the support booms 17 supported by the arms 16.1 to 16.4 with respect to the body 15 (arrows in Figure 1 in the arm 16.2). By altering these, each carrier boom 17 is independently displaced to a suitable position corresponding to the shape of the fabric rotation 14 (e.g., bend / angle / pivot point in the fabric rotation 14). The movement of the adjustable members 16.1 - j ** [: 16.4, 17] of the device 10, both telescopically and pivotally, can be achieved by means of functional devices fitted to them. The actuators may be, for example, media actuators, such as hydraulic or pneumatic actuators »···. Manual, eg with a winch mechanism • V. of course, use is also possible. In the Sheds 16.1 - 16.4 • ». ***. the arrangement of the actuators 24, 25 is well illustrated ··· *. 6a and 6b.

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The body 15 is, for example, at its end removably secured to the lifting device 18, which is shown in Fig. 1 in isolation from the body 15 and in Figs. 2-5 attached to the body. 15. The lifting device 18 35 may be, for example, a wheeled goods hoist, such as a forklift, and according to an embodiment 8 119193, the body 15 of the device 10 may also be wheel-less and can only be moved by a lifting hoist. The invention also relates to a lifting device 5 18 suitable for use with the tissue replacement device 10 according to the invention.

The elevator 18 can also change the position of the body 15 in the height direction, as can be seen in Figure 5. The device 10 may be attached 10, for example, to the telescopic lifting boom 26 of the hoist 18, whereby the body 15 with its support 17 is steplessly and easily reached to a suitable height taking into account the height of each tissue rotation (vertical arrow). The actuating means of the device 10, such as the working cylinders 24, 25 15 of the arms 16.1 to 16.4 and the telescopic movement of the body 15 and the latches 17, can be connected to the hydraulics of the lifting device 18 according to one embodiment. Thus, it is not necessary to provide the device 10 itself with a hydraulic unit, which substantially simplifies its implementation.

20: A: Figures 3-5 show some embodiments for mounting fabric 11; * S * S on the press portion of a papermaking machine 12. It should be noted that j * · ': not all rollers are shown in the figures for clarity.

With reference to these, the method according to the invention and ··· · j j * are also explained; 25 arrangements for treating even the fabrics 11 in connection with the forming machine 12, more particularly outside the machine 12, with the apparatus 10 according to the invention. In the initial state, the apparatus 10 may be in the configuration shown in FIG. . retracted. In addition, the arms 16.1 through 16.4 with their booms 17 ·, 30 may be in a position closely adjacent to the body 15, whereby the main cross-section of the device 10 is defined by its body 15. To be supported around the body 15 of the device 10 ··· · 1 of the intended tissue 11 may be unwound, for example, by the body 15

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* ttm · in front of the side end, which is without the support 35 of the lifting device 18 while supporting the fabric 11, for example with a bridge crane.

9 119193

The unwinding may be performed, for example, by an unwinding device 20 known per se.

When the unwinding has been performed so much that the resulting web loop 11 can be comfortably threaded around the base body 15 from its free (unsupported) end, the body 15 with its boom 17 is telescoped to adjust its length to the fabric. As the unwinding of the fabric 11 continues, the telescopic mechanism 23, 24 extends the arms 16.1 to 16.4 10 and the angle adjustment mechanism 22, 25 changes their angle relative to the body 15. As a result of the adjustments, the cross sectional area defined by the periphery of the device 10 is increased. As a result, the unwindable web loop 11 is supported in a controlled manner around the body 15, mainly on its sides 15, so that it does not hang freely. In addition to the support booms 17 on the arms 16.1 to 16..4, the body 15 itself can support the fabric loop 11 at one point, whereby the upper surface of the body 15 may also be provided with a sliding / support surface. Indeed, most of the mass of fabric loop 11 may be supported 20 just by body 15, which may also form the top supporting point in the cycle corresponding to fabric loop 11, and thus also: *! *: When moving main fabric 11 into machine fabric 14; also the tissue twist 14 back towards the device 10.

The unwinding device 20 ·· · *** · shown in Figures 3 and 4 may be arranged relative to the device 10 as desired. For example, it can be connected to device 10 so that its · *. *. the distance to the body 15 of the device 10 is a constant in the longitudinal direction * ·. ** · of the body 15. direction. The unwinding device 20 may also be provided with its own rings 20 ', ·, 30, whereby it is not attached at all to the device 10. The engagement Φ * · may further enable the unwinding device 20 to be movable longitudinally of the body 15. The unwinding device 20 is outside the fabric 11 ··· ·, ·:. When operating the lower position tissue loops, the excess ··· portion of the closed loop loop, clamping margin, may be 35 wound twice to unroll 20. In both cases, both retractable ends of the fabric 11 are disengaged on the same side, as is well seen in Figure 3. Generally, the unwinding device 20 may be of a type known in the art. For example, the winder 20 may have at its ends wheel-mounted means 20 'attached to the latch 20 * of the fabric 11 having, for example, a mechanical brake to limit unwinding of the latch 20 * and a sliding surface.

10

Once the fabric 11 has been opened as desired around the body 15 of the device 10, in the next step, the device 10 may be modeled at a position corresponding to the fabric twist 14 adjacent the machine 12 and optionally anchored and / or secured to the machine 12. Figures 3-5 illustrate this situation. The unwinding is performed so much that the fabric loop 11 can be supported by the arms 16.1 to 16.4 with latches 17 around the body 15 of the device 10 in the main cross-sectional shape of the fabric 14 or even slightly larger than the fabric 14 itself in the replacement position.

f »

Generally speaking, it is possible to speak of supporting a tissue loop 11 in the context of a treatment operation around the body 15 of the device 10; ***: mainly in the form of a tissue cycle 14.

The arms 16.1 to 16.4 can be shaped to form a loop 11 around the body 15 of the device 10 so that it is slightly larger than for example, a roll 14 as defined by the rolls, to which the loop 11 is to be moved from the device 10. The body • «. ** · 15 is raised by the lifting device 18 to a suitable height, e.g.

• * · · · "* Sure, one of the support arms 17 can also be moved to correspond to the extremities defining the upper tissue rotation 14.

• ·· • · · · · · ''

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Next, a transfer of tissue 11 from device 10 to tissue cycle 14 is performed.

11 119193

One first way is to pull one or more wires (not shown) from the drive side of the machine 12 through the machine 12 to the treatment side where the device 10 and the tissue loop 11 tuned thereto are located. The ends of the wires are also fastened to the edge 5 of the fabrics 11 from which the body 15 is free, i.e. without support (being opposite to the lifting device 18, the body 15). The tissue loop 11 is moved from the device 10 to the tissue cycle 14 around the rollers defining it by pulling it from the operating side, for example by hand, with the wires (horizontal arrow in Figure 5).

10

Fig. 2 illustrates another embodiment of guiding the fabric 11 in the transverse direction of the machine 12 from the device 10 to the fabric rotation 14. According to this embodiment, the device 10 may be provided with a guide arm 21. The guide arms 21 may be protruding and inwardly e.g. In this case the fabric loop 11 is grabbed at the edge with the guide arms 21, after which the guide arms 21 transfer the loop 11 of the circuit 14. The thin telescopic guide arms 21 fit well in narrow machine element slots and the drive link 20 the edge 11 until the edge of the drive side. Thereafter, the ends of the arms 21 are detached from the fabric loop 11 and the arms 21 are retracted into the booms 17. A lifting device 18 can also be used to power the guide arms 21.

• · • · • · ♦ • * * »·· *; · * · 25 According to a third embodiment, a sufficiently rigid web loop 11, such as a metal belt, in the transverse direction of the machine 12 can, surprisingly, even be inserted into the machine 12 on its orbit 14. In this case, for example, · · ·, ···, include at least one wire 27 (Fig. 2) passing through the frame 15 • · · «· *. 30 end to end twice. For the cable 27, at one end of the body 15, now free hanging end, the wheel 15 may be a ratchet wheel 28 or the like for reversing the direction of travel of the cable 27. Opposite to the castor wheel 28, the body 15, now being the carrier end of the body 15, may have means 35 for changing the length of the wire 27, such as a winch mechanism 29. The wire 27 leaving the winch 29 may pass 12 119193 For example, the cable portion returning from the ratchet wheel 28 to the end of the hoist 18 may pass between the frame 15 and the web loop 11 lying on top thereof 5, following the shape of the frame 15.

When the fabric loop 11 is installed in the fabric loop 14, the end 35 of the wire 27 can be gripped on the side 18 of the lifting device 18 of the fabric loop 11. The wire 27 is then wound on a winch 10 29, whereby the wire 27 pulls the rigid web link 11 attached thereto towards the machine 12. Since the web loop 11 is shaped, raised and positioned by the device 10 in the "web" 14, the loop 11 moves from the device 10 to the web 14. When the end 35 of the rope 27 reaches the end of the pulley 28, the web 15 is inserted into the machine 12 and the rope 27. 35 can be detached from the edge of the loop 11. In this embodiment, no mounting means are inserted into the machine 12, or there is no need to pull any special ropes through the machine. It is also possible to handle fabrics of lower stiffness by pushing this way, at least if, for example, the upper part of the body 15 is provided with, for example, a tissue-wide tray (not shown) to which the grip 35 can be secured and 12 in, ϊ: *: This may serve as a possible stiffener.

· · · · · · · · · · · · · · · · · · · · · · According to one embodiment, when the fabric 11 is introduced into the machine 12, the body 15 of the device 10 can be raised even slightly higher • V; position as required by the actual tissue cycle 14.

• ·. ** ·. In this case, the long body *, 30 15 which is free at its end on the machine side 12 is inclined at a slight angle to the machine 12. The angle 18 may also be achieved by the tilt feature 30 of the lifting boom 26 of the hoist 18 (Figure 1). Due to the tilt • ·· V *, the fabric 11 to be transferred to the machine 12 is obtained as if drained by a slight downhill while being pulled / pushed into the machine 12, which tilt contributes to the easy installation of the fabric.

13 119193

As the tissue loop 11 moves from the body 15 of the device 10 to the machine 12 (the horizontal arrow in Fig. 5), any open opening device 20 can also be moved inside the machine 12. It should be noted that the main body 15, 17 of the device 10 does not itself enter the machine 5 12. The structures of the machine 12 have a transverse opening of the machine 12 and guides for the unwinding device 20, wherein the fabric loop 11 can be finally unwound for tightening. Finally, the unwinding device 20 is pulled out of the inside of the machine 12, and the guide and tensioning rolls of the fabric 11 perform the final tightening of the fabric loop 11 in place.

Similarly, when applying the invention to, for example, a metal belt, the device 10 of the invention may be used not only to install the fabric 11, but also to remove the fabric loop 11 from the web 14 of the forming machine 12. against the shape of the tissue rotation 14 into the assembly in the same manner as when the fabric 11 was mounted on the machine 12. For example, the fabric loop 11 20 can be pulled out of the loop 14 around the body 10 * of the device 10 and the boom beams 17. Thereafter, the tissue 11 may be removed from the device 10, for example, in the reverse order of *** as in the above-described embodiment, on the device 10 was • · •; *: arranged. Finally, the fabric loop 11 can be formed as follows: 25 compact double rolls with fastening · ♦ ·; *** · unwinding device 20.

· ♦ ·

Figures 6a and 6b further show some embodiments of the device • ·. * ··. of tea 10 on a very principled level seen from the end- • · · *. 30 weeks The device 10 now includes means 19 for holding the loose fabric * * · "· loop member 11 'during handling. In particular, when mounting the fabric loop 11 in the upper positions, an additional section of the fabric loop 11' can be provided. folds over the device 10 into one or more pleats 10. The members 19 may consist of, for example, clamps or the like for fast and easy release of the supported tissue loop 11 from the device 14 119193 10. For example, clamps 19 may be three on each side 11 'at the ends and one at the center of the body 15. The pleats 11' can also act as a stiffener when the fabric loop 11 is inserted into the machine by means 27 - 29, 35 of the device 10 5 (Figure 2).

Figure 7 shows, in extremely reduced form, another embodiment of the device 10 according to the invention. If the fabric rotation 14 extends over a considerable area, for example 10 longitudinally and / or vertically, the body 12 may be formed of at least two body members 15.1. - 15.3, which may also be at different altitudes. One application for such a frame structure may be, for example, a flat wire reformer. The device units 15 10 may then be of the basic construction such as those shown in Figures 1 and 2, each with its own lifting device (not shown). The bodies 15.1 to 15.3 may then be interconnected so that they are spaced apart. On the other hand, the frame blocks 15.1 to 15.3 may also be uncoupled. Possible coupling can be performed with the machine's longitudinal connecting beams, which may also be telescopic. Thus, for example, a long telescopic dimension is not required for rods 16.1 j * [: - 16.4 and otherwise ϊ: *: structures are less stressed.

The device 10 according to the invention may also be provided with intelligence. According to one embodiment, device 10 may be provided with a processor. and memory means CPU, MEM. They can be used for example • ·. ***. for the purpose of storing the processing information of the tissue loop 11, and ·· 30 to further control the device 10 according to the stored processing information. For example, for the first time, by inserting or removing tissue 11 • · ♦ ♦ *; * at each position, pressing only the V * key will memorize the position of the MEM device • · • ,,, ί 10 and its members 16.1 to 16.4 corresponding to that tissue cycle 14 35. In addition, the memory MEM may also store the location of the device 10 in the data center. In the following processing steps, the device 15 119193 10 is immediately retrieved from the MEM using its automatic "control" by the CPU, which has a significant effect on the processing speed, in its proper "shape".

5

In principle, the invention can cope with only one movable arm and a supporting boom fitted thereto. With such a device, the tissue loop can be processed, for example, in a triangular tissue rotation position. One of the arms 10 and the boom can then define one of the angles of tissue circulation and the frame angles of the body 15 may form two other angles of tissue circulation. In addition to being telescopic in its longitudinal direction, the body 15 may also be in its height and / or width.

15

Since the brackets 17, which define the periphery of the tissue rotation 14 around the body 15 of the device 10, may be considerably smaller in diameter, for example, rolls 13.1 to 13.5 (Fig. 7), this has to be taken into account. it may be necessary to set even the actual tissue rotation ϊ # ί * 14 so that the entire tissue loop 11 is located at each point on the outside of the rolls 13.1 to 13.5 defining the tissue cycle 14. As a result, even the entire fabric 11 can be unwound from the device 20 around the device 10, whereby the need to unwind the device. the device 20 is completely removed from the tissue 11 as it is transferred to the machine 12.

• · • ♦ · • · • φ .1; According to yet another embodiment, the invention is applicable to ·· # *. 30 also in connection with the fabric penetration device disclosed in Applicant's Finnish Patent Number FI-103421B. Typically, such an air drive device is located at the bottom of the tissue loop. With this in mind, the changing device 10 of the invention allows the lower part of the fabric 11 to be tightened by the support arms 16.1 to 16.4 of the device 10. This results in, inter alia, the advantage that the fabric 11 is sure to enter the penetration device without being waterless.

16 119193

According to the basic idea of the invention, the device 10 is adjustable so that the fabric 11 can be supported around it in the desired tissue rotation shape, or generally in a form that allows the tissue replacement to the web forming machine 12. In addition to (or instead of) or by means 16.1 to 16.4 extending above / below and adapted to move with respect to the body 15, the body 15 itself can also be moved. For this purpose, for example, a boom 26 of the goods hoist 18 provided with a rotator 10 can be used, whereby the body 15 can be turned to the desired arrangement and then the tines 17 adjusted to suitable arrangements by the arms 16.1 to 16.4.

One skilled in the art will appreciate that the term "tissue circulation" may be understood in a very broad sense in connection with the invention. For example, as described above, the rolls through which the web 11 is rotated while the machine 12 is running would define the web rotation. It should also be noted that for the context of the invention, for example, Machine Frame Structures may be understood as tissue circulation defining sites specifically for tissue replacement. More generally, • · *, ·, · can also be referred to as the opening formed on the side of the machine by its · · 9! in a tissue replacement position. In this case, the fabric loop may be introduced into or removed from the machine, for example, from another point defined by the body structures * ··: 25, which may not be exactly at each point of the roll; *:. Once the fabric loop is received inside the machine, it is moved at least somewhere in the longitudinal direction of the machine so that it can be moved to its final runtime orbit.

• ·: *** · Also, it must be understood that the principal ··· # 30 images may not show all of the rolls that define the fabric rotation. In the context of the invention, a web forming machine refers to, for example, a paper, board, tissue or · · · * * pulp machine.

It is to be understood that the foregoing description and the accompanying drawings are intended only to illustrate the present invention. Thus, the invention is not limited to the embodiments set forth above or as defined in the claims, but many variations and modifications of the invention which are possible within the scope of the inventive concept defined in the appended claims will be apparent to those skilled in the art.

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Claims (11)

A device (10) for installing or removing a tissue loop (11) in a tissue circulation 5 (14) of a sheet forming machine (12), about which device the tissue loop can be arranged substantially in the tissue form of exchange in connection with its installation or removal and which device (10) comprises - a body (15), and 10 - at least one rod (16.1) arranged adjacent to the body, to which is provided a bracket (17) in the direction of the body (15) of the tissue loop (11). , characterized in that - the body (15) can be arranged in a lifting device (18), with which it is arranged to adjust the position of the body (15) in height and - at least one of the positions of the brackets (17) in relation to the body ( 15) is arranged to be changeable with the closure set (16.1) to adapt the tissue loop (11) to the exchange shape of the tissue circulation (14). • · • ♦ · • · ♦ • · ··· Vί Apparatus (10) according to claim 1, characterized in that the ·· · ♦ * φί lifting device (18) is presumably equipped with a boom tilt function (26, 30) for moving the tissue loop (11). *: 25 to the device (10) by means of a downhill--: *: power. A device (10) according to claim 1 or 2, characterized in that the body (15) and the bracket (17) are telescopic. ··· \ 30 • · · • * · II! A device (10) according to any of claims 1-3, characterized in that the body (10) of the device (10) consists of at least two segments (15.1 - 15.3), which are arranged at a distance between • V · • · * «.. · each other. 35 119193 Device (10) according to any of claims 1-4, characterized in that the device (10) comprises means (19) for holding a soft tissue loop part (11 ') in connection with the handling. 5 Apparatus (10) according to any of claims 1-5, characterized in that an unwinding device (20) for the tissue loop (11) can be coupled to the device (10). io A device (10) according to any of claims 1-6, characterized in that the brackets (17) are provided with guide shank (21) for conducting the tissue loop (11) from the device (10) to the exchange of the tissue circulation, which guide shaft ( 21) are arranged to be pushed out and pushed into the brackets (17). 15 A device (10) according to any of claims 1-7, characterized in that the device (10) is equipped with process and memory devices (CPU, MEM) for storing the handling data of the tissue loop (11) and for controlling the device ( 10) in accordance with said handling data. • · • · · • · ♦ • · ··· • t · An arrangement for handling a tissue loop (11) in S'ϊ connection to a sheet forming machine (12), which sheet forming machine (12) comprises several tissue circuits (14) and about which device (10) a tissue loop (11) can be arranged in the ··· in *** · essentially the exchange of the tissue (14) in connection with an M1 handling measure and which device (10) comprises · *. *. - a body (15), and • ·. ***. - at least one closure arranged adjacent to the body, 30 sets (16.1), to which is provided a bracket (17) in the direction of the body loop (11) in the direction of the body (15), Characterized in that the · ·· V * ~ body (15) can be arranged for a lifting device (18), ··· with which it is arranged to adjust the position of the body (15) in height and at least one of the The positions of the brackets (17) in relation to the body (15) are arranged to be changed with the closure set (16.1) to adapt the tissue loop (11) to the mode of exchange of the tissue circulation (14). 5 An arrangement according to claim 9, characterized in that the sheet forming machine (12) comprises several means (13.1 - 13.5) arranged for the tissue loop (11), which are arranged to determine said tissue circulation (14) for said tissue loop (11). ) and which organs (13.1 - 13.5) are at least partially in different planes in relation to each other. The use of a device (10) according to any one of claims 1-8 for mounting a tissue loop (11) in place in a sheet forming machine (12) or its removal from a sheet forming machine (12). • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · • • • • ft • ft · ft ft ft • ft ft ft ft • • ft • ft ft ft ··· ft ft • ft ft ft ft ft • • ft • • ft • ft • ft ft ·· ft • ft · • · ft ft ft ft ft • ft ft ft • ft · «♦