FI121142B - Arrangements for storage and / or transport of rolling axles arranged at a longitudinal cutter or in another finishing area - Google Patents

Description

Arrangement for storing and / or moving winding shafts in a winder or other post-processing area

The invention relates to the handling and storage of winding shafts, i.e. spool rolls, in a fiber web winder or elsewhere in the finishing area 5.

As is known in the art, paper is produced on machines that together form a paper production line that can be hundreds of meters long. Modern paper machines can produce more than 450,000 tonnes of paper per year. 10 The speed of the paper machine web can be over 33 m / s and the paper web width can be over 11 m.

In papermaking lines, papermaking is a continuous process. A paper web made from a papermaking machine is rolled around a winding spindle, or 15 reel rolls, into a machine roll that can be over 5 m in diameter and over 160 tons in weight. Once the diameter of the machine roll is predetermined, the reeling on an empty reel of reel is started without interrupting pre-roll paper production. The purpose of the winding is to convert a flat paper web into a more manageable shape. With the reel, the continuous process of the papermaking machine 20 is interrupted for the first time and switched to intermittent operation. The aim is to achieve this periodicity with the best possible efficiency so that the work already done is not wasted.

The papermaking line can be used for certain types of paper to perform post-process treatments, such as coating or treatment that affects the surface properties of the paper, such as calendering. These processes are either separate installations or processing in the manufacturing process.

The web of papermaking machine rolls has a full width and is even more than 30,100 km long, so it has to be cut into a sheet suitable for the paper mill customers, so that it can be lengthwise and rolled around the cores. customer rolls 2 before shipment from the paper mill. This web longitudinal cutting and reeling takes place in a separate machine known in the art, i.e. a winder.

5 As is known in the prior art, in a winder, the machine roll is unwound, the wide web is cut by a cutting member into a number of narrower partial webs which are wound by a winding member around customer cores such as cores. When the customer rolls for each sub-web are simultaneously made, the winder is stopped and the rolls, or so-called "rollers", are stopped. the move is removed from the machine. After this time, the process will continue as a new move. These steps are repeated periodically until the paper runs out of the machine reel, whereupon the machine reel is performed and operation begins again as a new machine reel. There are often two sliders per paper machine, one on the center line of the paper machine and the other on the side of the center line of the paper machine.

Thus, the transfer of the full machine roll must be arranged between the paper machine retractor and the unrolling unit of both winders, and the winding shafts must be stored e.g. in the winder area to await transfer to the winder or directly to the storage adjacent to the winder.

20 Processes carried out on papermaking lines thus require the transfer of machine rolls and reel shafts from one process to another. Because of the high weight of the machine roll, their transfer during the process is carried out according to the prior art, typically along the rails, assisted and supported by machine members therein. Longer distances, and especially transverse to the center line of the papermaking machine, are typically accomplished by moving trolleys along rails arranged on the floor of the data center. There are also crane arrangements, such as an automatic crane arrangement. Also, storing and moving of the reel shafts is difficult due to their large size and is typically temporarily stored on the pre-winding machine roll feed rails, which results in wasted track space because the positions of the reel shafts are usually determined by the full machine rolls.

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It is an object of the present invention to provide an improved storage and / or transfer arrangement of winding shafts which provides an improved utilization of storage space and, if necessary, a more efficient transfer of roll shafts to a desired location. To achieve this object, the arrangement according to the invention is characterized in that the arrangement comprises at least one storage piece arranged to connect at least two winding axes so as to form a storage / transfer unit.

The mass of the reel shafts, which may be up to 30 tons, for example, is substantially less than that of machine reels of up to 160 tons, and thus the lifting / moving means of the machine reels can be utilized to lift / move several reel shafts at a time. Preferably, the storage pieces are dimensioned such that they do not need to be completely empty, but may have some wreckage paper to be stacked, whereby the storage piece can also be utilized as a buffer stock for machine rolls containing wreckage paper at the unloading site.

Advantageous further developments of the invention are described in the dependent claims.

In the following, the invention and its operation will be described with reference to the following schematic drawings, in which: Figure 1 is a schematic end view of an exemplary embodiment of an arrangement of the invention;

Fig. 2 shows the arrangement according to Fig. 1, along the section line II-II in the region of one end of the winding axes,

Figure 3 shows another embodiment similar to Figure 1, and Figure 4

Figure 4 illustrates the use of the embodiment of Figure 3 for storing winding shafts in multiple planes.

In Figs. 1-4, like reference numerals are used for like parts.

According to Figures 1 and 2, a first embodiment of the invention comprises a storage piece 2 disposed between the winding shafts 3a, 3b having a receiving housing for receiving the shaft pins 7 of the winding shafts. In this 10 embodiment, the lower winding shaft 3a is supported by its pins 7 on the rails 1 (only one of the rails of the pair of rails is shown in the figures). The shaft pin 7 is preferably provided with a guide groove 5 which is positioned around the respective rail 1, holding the winding shaft 3a in the axial direction relative to the rails, allowing the winding shaft to be moved in a controlled manner along the rails. The Va-15 stacking body 2 is preferably dimensioned in thickness so as to overlap the grooves 5 in the shaft pins 7 of the overlapping winding shafts 3a, 3b, ensuring that the winding shafts remain in place during storage on the body 2. The storage piece 2 is further provided with gripping members 4 to which a lifting means can be attached, such as, for example, a hook for lifting strap or wire of crane 20. The storage piece 2 is disposed at each end of the winding shafts 3a, 3b, whereby the lifting means is attached to the gripping members 4 of the storage pieces at both ends and the winding shaft 3b on their upper surface is easily moved to the desired location. This arrangement allows for stacking of several reel shafts on top of each other using a plurality of storage pieces between each of the two superposed reel shafts, whereby the reel shafts can be easily moved several at a time to a desired location, for example accelerating their transfer from the winder. Furthermore, stacking of several winding axes by means of storage pieces 2 on top of each other allows more efficient utilization of the rails 1.

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Fig. 3 shows a variation of the sequenced according to the invention, in which the storage piece 2 'comprises receiving seats 6 for the two winding axes on both the upper surface and the lower surface of the storage piece 2'. In this embodiment, the reeling shafts 3a and 3d are disposed on rails 1 with the reeling shafts 5 3b and 3c in the receiving receptacle 6 on the upper surface of the storage body 2 '. This solution can move two or more reeling shafts 3b, 3c on the upper surface of the storage body.

Figure 4 shows a variation in which a plurality of storage members 2'a, 2'b, 2'c are superimposed so that two reel shafts 3 are locked in place. In the embodiment shown, the bottom surface of the lowest storage piece 2'a is flat for use outside the rails. Of course, the storage bodies 2, 2 'according to the embodiments of Figures 1-3 may also be conceived to be placed on a support other than the rails 1, e.g., when the storage body with its reel shaft is moved away from the rail 1 to another intermediate storage location.

The lower winding shafts on the rails 1 are intended to be moved 20 either by means of transfer trolleys or they can be lifted onto the storage unit and moved with it to the desired location. It is also possible to fasten the lifting means around the lowest winding axis on the rails and raise it together with the storage unit (s) and the winding axis (s) above it for transfer to rails or other suitable supports.

In the above embodiments, the storage body is arranged at the spindle axis pin at each end of the spindle axis, but it is also contemplated to use one or more storage pieces positioned at the spindle body, i.e. between the spindle members 30, to permit stacking of the spindles over as a group. The storage bodies can also be conceived as, for example, pivoting structures superimposed on a fixed wall, forming a fixed storage location for the winding shafts.

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Claims (5)

1. Arrangements for storing and / or transporting roller shafts (3, 3a-3d) arranged at a length cutter or in another finishing area, characterized in that the arrangement comprises at least one bearing piece (2; 2 '; 2'- 2'c) which is arranged to join at least two rolling axles such that they form a storage / transport unit. Arrangement according to claim 1, characterized in that the bearing piece (2; 2 '; 2'a-2'c) comprises receiving seats (6) arranged to each receive the shaft pin (7) of the end of a rolling shaft. , said bearing piece being provided at both ends of connecting rolling shafts. 3. Arrangement according to claim 1 or 2, characterized in that the bearing piece (2; 2 '; 2'a-2'c) is provided with gripping means (4), to which a lifting means can be attached for lifting and transport the bearing piece and at least one rolling shaft attached therein to the desired location. Arrangement according to any of the preceding claims, characterized in that the bearing piece (2; 2 '; 2'a-2'c) is placed between rolling shafts (3a, 3b; 3a-3d) arranged at mutually arranged levels. Arrangement according to claim 4, characterized in that the bearing piece is arranged to receive at least two parallel rolling axes (3a, 3d; 3b, 3c) at each level.