FI117207B - Intermediate roller changing device for multiple rolling calenders, has sliding device generating shearing force for journal of roller, where sliding device is positioned away from layer of rolling mill of multiple rolling calenders - Google Patents

Abstract

The device has a lower guide unit (242) extending over an upper guide unit (241) when viewed from the direction of a bushing. A layer runs over an upper surface of the lower guide unit, where the layer is directed upwardly from the horizontal. A sliding device (5) generates shearing force for a journal of a roller, where the sliding device is positioned away from a layer of a rolling mill of multiple rolling calenders. Independent claims are also included for the following: (1) a method for removing an intermediate roller from a rolling mill of multiple rolling calenders (2) a method for transporting a new intermediate roller to a rolling mill of multiple rolling calenders.

Description

117207

Multi Roll Calender Selector Changer and Method for Changing Intermediate Roll

The invention relates to an intermediate roll replacement device for multi-roll calendars according to the preamble of claim 1.

The invention also relates to a method according to the preamble of claim 10 for removing an intermediate roll from a multi-roll calender from an intermediate roll changer.

The invention also relates to a method according to the preamble of claim 16 for introducing a new spacer roll into a multi roller interchanger by means of an intermediate roll changer.

The roller of a multi-roll calender comprises a top roll, a lower roll, and intermediate rolls 10 between these rolls, which are generally 2 to 12 pieces. The intermediate rollers of the multi-roll calender are equipped with so-called lightening levers, which comprise, on the one hand, lever arms attached to the calender body and to the shaft pins at the ends of each intermediate roll, which can be lightened by hydraulic cylinders. By lightening the intermediate rolls as desired and then loading the roller with lower and / or upper rollers, it is possible to expand the 15 calendering windows available for the multi-roll calender.

Intermediate rolls in the multi-roll calender need to be serviced from time to time and for this reason the serviceable roll must be removed from the roll and replaced with a new roll. Nowadays, the intermediate rolls of a multi-roll calender are removed by attaching a lifting sleeve to the ends of the shaft pins and then moving the roll attached to the lifting sleeve with a roll change or hall lift 20 (cf. Papermaking Science and Technology book 10, Papermaking Part 3, p.

• · * 33). First, such a way of removing the intermediate rolls requires relatively large space in the cross-machine direction. Second, the ends of the shaft pins of the intermediate rolls must be such * · · ;;; in the way the intermediate rolls are replaced, they must be dimensioned to withstand their own ** ··: weight. This easily results in higher bearings and manufacturing costs for intermediate rolls.

** ». ···. The invention is intended to overcome the drawbacks of the prior art described above.

• # ·! Thus, the main object of the invention is to provide a multi-roll calender intermediate roll changer that requires less space to move the intermediate rolls in the transverse direction of the paper machine. : · * At the same time, the replacement device should preferably be such that it allows the use of thinner shaft pins.

2 117207

The multi-roll calender cloth roll changing device of claim 1 achieves the above objectives. The interchangeable roller changer on the multi roll calender consists of removable shaft pins at the ends of the intermediate roll! fastening latching levers each consisting of, on the one hand, pivot-5 arms securing to the calender body, and on the other, a mounting bracket associated with the opposite end of each pivot arm, having a mounting housing with a removably engaging bearing housing each pair of guide members being comprised of an upper and a lower elongate guide member. The lower control member of the change device, viewed from the direction of the mounting housing 10, extends further than the upper guide member and the plane passing through the upper surface of the lower guide member slightly upwards from the horizontal plane. In addition, the replacement device has a thrust means for providing thrust to the roll shaft pins that extend outwardly from the plane of the roll of the multi-roll calender.

15 Here the direction "away from the plane of the track" means the direction of movement out of the plane of the track and outwards from the body of the multi-roll calender.

With such an intermediate roll changer, it is removed from the roll of the multi-roll calender by first opening the mutual attachment between the spindle neck and the mounting bracket of the mounting bracket and then pushing the intermediate roll out of the axle pin 20 upwardly in the running direction of the roller: V: and that rotation of the bearing housing is prevented when the retaining means is rolled away from the roller.

• ** •

The new intermediate roll is in turn introduced into the multi-roll calender by first introducing the new intermediate roll into the free end of the lower control member so that the retaining means is positioned to prevent the bearing housing from rotating with the roll. towards the lower guide member at the "j" level of the track and then the bearing housing of the intermediate roller is secured to the mounting housing of the mounting bracket.

• · * • ·

The basic idea of the invention is to remove the intermediate roll from the multi-roll calender with a changeover device. with a pushing means for pushing the roll away from the plane of the roll. Nor- • * «r:. paint is transmitted by attaching a lifting sleeve and pulling the intermediate roller away from the roller by means of a crane, which requires considerably more space in the transverse direction of the papermaking machine to remove the intermediate roller from the roller than when using the inventive gearbox.

3 117207 devices. In the invention, the lower guide groove of the intermediate roller extends beyond the upper guide groove when viewed from the casting mounting housing, and its plane passing through its upper surface is slightly upward from the horizontal plane, whereby the roll rolls out and upwardly from the track plane P when pushed. When the 5 intermediate rolls are rolled slightly upward along their axes along the guide member, it is ensured that the intermediate roll is not dropped during transfer. In the invention, the intermediate roll is pushed through a pusher of the pushing means from the shaft neck between the bearing housing and the roll shell to a certain distance from the plane of the roll, and a lifting arm is secured to the intermediate roll housing with the frictional surface of the lifting arm. This way, you no longer need to lift the intermediate roll with a lifting sleeve that secures to the outside of the bearing housing, but the lifting arm can be attached directly to the bearing housing of the intermediate roll. This allows the shaft shafts and bearings of the roll to be reduced, thereby saving on the cost of manufacturing the intermediate roll. A further advantage is obtained by the fact that the pulley of the drive belts of the drive rollers of the intermediate roller ham-15 '' no longer has to be dimensioned according to the design of the lifting sleeves, whereby the structure can be made lighter and less expensive.

In a preferred embodiment of the invention, the retaining means comprises an elongated guide lip that is partially secured to the lower guide member, and a guide pin which is rotatable in its longitudinal axis and engages the bearing housing. Such a retaining means provides the advantage that the bearing housing guide pin rests on the upper surface of the guide lip when moving the intermediate roll, so that the bearing housing cannot rotate when removing the roll from the roller or \ v when introducing a new roller into the roller.

• «* *

Other benefits of the invention include: Forward ♦ 9. 25 is rolled off the power line according to the invention before the track line. · "" Is fitted with a lifting arm and removed. When the new intermediate roll is introduced into the roller halfway, it can be scrolled down along the surface of the lower control member. In this case, the lift arms do not have to bypass the oil couplings of other intermediate rolls and the ··· j * drive switches when removing the intermediate roll from the roller or introducing a new 30 roller into the roller, reducing the need for space change in the cross machine direction. Due to the reduced space requirements of the lift arms, lifting platforms can also be built on the sides of the calender closer to the track, which facilitates the maintenance of the multi-roll calender. The pillars of the lifting platforms can also be placed closer to each other.

35 Both DE 196 33 670 A1 and DE 196 33 668 use a basic idea similar to that of the present application; In the publication of both tabs 4 117207, the intermediate roll is rolled away from its plane by means of a suitable guide rail or guide track on its axle pins. However, in these known application publications, the level of the guide rail or guide track is designed to be inclined downward when the intermediate roll is removed from the track, not upwardly, as in the invention, whereby the intermediate roll rolls gravely away from the plane of the track. When the intermediate roll rolls gravely away from the level of the track, there is always a risk that it will fall uncontrollably during the transfer operation. In addition to that. The roller replacement devices described in the publications do not have anti-rotation means for the roller bearing housing, which makes it difficult to remove the roller from the roller and to introduce a new roller into the roller.

The invention will now be described in more detail with reference to the accompanying drawings.

Fig. 1 is a schematic perspective view of one end of a multi-roll calender spacer Tan having a relief lever, obliquely viewed from the side of the track body to a spacer, the intermediate roll being detached from the relief lever.

Figure 2, in turn, is shown in a similar view to that of Figure 1 with the end of the intermediate roll when the intermediate roll is moved to the free end of the lower control member of the lightening lever.

Fig. 3 shows the same end of the intermediate roll as in Fig. 2, but now the intermediate roll is viewed from the front, obliquely outside the track.

• 9 9 * 99 9 9: Y: 20 Figure 4 is a schematic perspective view illustrating the lightweight of the multi-roll calender. knuckle as seen from the end of the roller shaft end.

* * * * * Fig. 5 is a front view showing one end of an intermediate roll of a multi-roll calender with a lifting arm attached to a bearing housing.

• »· • 9 9 9 999

Fig. 6 schematically illustrates the transfer of an intermediate roll away from the roll of the multi-roll calender 25 when the roll is viewed directly at the end of the roll.

«· * · 9 99

Figures 1-3 and 5 show a single angle roller 4 of a multi-roll calender with different angles, provided with the intermediate roll changer 1 according to the invention. For the sake of clarity, other conventional parts of a multi-roll calender such as upper and lower rolls and other intermediate rolls, calender body are omitted. ·: 30 and controls used to control the calender. Fig. 4 illustrates the structure of a replacement device 1 according to the invention.

r 5 117207

Fig. 6 illustrates a portion of a roller caliper roll 10 of a multi-roll calender in which the intermediate roll 4 is moved by a pushing means 5. For the sake of clarity, e.g. spacer bearing housing.

1-3 and 5, the spacer 4 is formed by a roll shell 45 having shafts 41 at each end of the tab 5. Each shaft 41 passes through a roll bearing housing 43 such that the shaft 41a of the shaft 41, which is generally a bearing housing, remains between the bearing housing and the roll shell. Thicker than the end portion 41b of the shaft pin 41 located after.

Connected to the shaft pin 41 of the intermediate roller 4 is the lightening lever 2 of the intermediate roller 4, which is intended to relieve all or part of the load caused by the connected auxiliaries and the weight of the intermediate roller itself, but in the present invention the lightening lever 2 is also used The lightening lever 2 shown in Figs. 1-5 has two pivot arms 21 securing to the calender body R, with a roll holder end 21a formed with a mounting bracket 20 having a mounting housing 22 for the roll bearing housing 43 and a guide fork 23 for guiding the neck of the intermediate roller shaft 41.

Fig. 6 shows the displacement of the intermediate roll 4 away from the line P of the multi-roll calender roll 10. The figure shows the displacement movement of the intermediate roll 4 provided by the pusher 5 where the intermediate 4 moves from the lower and upper guide member 243 of the lower and upper guide members 242, 241: Y: 20.

The mounting bracket 20 of the relief lever 2, which is best seen in Figures 2, 3 and 4, comprises: a mounting housing 22 which is approximately the length of the bearing housing 43 or slightly longer in the axial direction of the roll, and shaped such that the bearing housing 43 located on the shaft pin neck 41a can be secured to said housing by means of suitable fastening means, such as bolts, at least at the top and bottom of the bearing housing. A guide fork 23 is provided at the end 22a of the roll housing 45 of the mounting housing 22 having a:: · pair of guide members 24 consisting of two in the same vertical plane, **. but from a bar-shaped upper and lower guide member 241, 242 extending at different heights, having a guide member 25 spaced about the diameter of the cross-section of the shaft pin 41, the guide members being joined approximately flush with the mounting housing 22 through the C-shaped connecting member 243; The curvature of the C-shaped connecting member of the control member pair corresponds to the Capricorn * axis. Ian 41; 41a curvature. The upper surface 241a of the upper guide member 241 and the lower face 242a of the lower guide member 242 extend at least some distance approximately 35 so that the neck 41a of the shaft 41 of the intermediate roll 4 6 117207 inserted in the guide hole 25 the guide member 241 is relatively short in that it is intended only to guide the shaft pin 41 of the intermediate roll 4 to the connecting piece 243 when the new intermediate roll 4 is introduced into and out of the connecting piece 243 when 5 rolls are removed. Instead, the lower guide member 242 is relatively long and its upper surface rises about 1-3 degrees relative to the horizontal when said guide member 242 is viewed from the direction of the calender body. There is thus a certain distance between the upper and lower guide members 241, 242 in the vertical direction, which is the guide fork 25 of the guide fork 23 which guides the passage of the shaft pin 41 of the intermediate roll 4 when the shaft pin 41 is removed from The plane P of the multi-roll calender roll 10 is a vertical plane running longitudinally along the intermediate roll 4 attached to the rack 20 (cf. Figure 6).

Figures 1 and 2, and in part also Figures 3 and 6, show the invention. a current balance 1 pushing means 5 which is used to push the intermediate roll 4 away from the rack 15 along the aforementioned guide rail 25. The pushing means 5 is a hydraulic hydraulic cylinder 5 whose rear end 5a rests on the outer side 21b of the roll 45 sideways. The hydraulic cylinder 5 driving end 5b associated with the winder 53, which has a body 51, 41 supported on the pivot shaft side of the roll curvature that is roughly equivalent, TU-20 of said shaft pin 41 and the curvature of the upper and lower ends are respectively axially v # pin be supported in the upper and lower rollers 53b, 53a. The pusher 5b of the hydraulic cylinder 5 engages the center of the roller body through a joint that allows the roller 53 * * · to pivot in the transverse direction of the roll pin. The hydraulic cylinder 5 is driven t * »* ·: * ', for example, by a hand pump from a lifting platform mounted adjacent to the intermediate roller.

* · 25 The current account 1 according to the invention further comprises a lower control element * ·· «. · * ·. An elongate support piece 6 (support bar) parallel to the upper surface 242a of the 242, the upper surface 6a of which is flush with the upper surface 242a of the lower control member of the fork 23. The lower guide member 242 is considered to start immediately after the connecting piece 243, where the neck 41a of the shaft (pin) 41 of the intermediate roll 4 is located when the bearing housing 43 is mounted in the mounting housing 22 of the bracket 20. on the outer side of the connecting piece 243a, i.e. the side of the connecting piece:: ··, just below the shaft pin 41 to be inserted into the connecting piece 243 to support the shaft pin 41 when the bearing housing - !; ·; * is removed from the mounting housing 22. housing 61 is open • 9 m: 35 open, allowing support member 6 to be removed from said housing 61 when it is not needed. With the support piece 6 inserted in its housing and the neck 41 of the shaft pin 7 117207 of the intermediate roll 4; 41a is still attached to the connecting piece 243, remaining on the surface 6 of the supporting piece; 6a and a very small gap between the shaft pin neck 41a.

Furthermore, the replacement device 1 according to the invention has a retaining means 3, best seen in Figures 3 and 4, which is able to prevent the bearing housing 43 from rotating with the roll 5 4 when the roll 4 is rolled away from the road bar along the guide salt 25. The retaining means 3 has a guide pin 32 which is secured to the side of the roll shell side 43a of the bearing housing 43 from the bearing. A guide pin 32 is located at the bottom of side 43a of said bearing housing and is substantially parallel to the shaft pin 41, extending from said side 43a towards the roll shell 45. Further, the retaining means 3 has a pit-10 tapered flat guide lip 31 which engages with its rear end 31a on the bearing side side 242c of lower guide member 242 (cf. Fig. 4) and whose free front 31b extends approximately parallel to upper upper edge of lower guide member 242 away from the level of the track. The rear portion 31a of the guide lip 31 secured to the side of the lower guide member 242 is substantially parallel to the upper surface 242a of the lower guide member 242 and is spaced from said upper surface 242 such that the guide pin 32 secured to the bearing housing 43 abuts .

The following describes the removal of the intermediate roll 4 from the roll pack 20 of the multi-roll calender by the intermediate roll changer 1 according to the invention.

• · · • · ·

In the situation shown in Figure 1, the intermediate roll is located in the plane P of the track, i.e.. just above and below the intermediate roll there are intermediate rolls and / or upper and lower rollers not shown in the figure. Fig. 1 shows the initial situation when the intermediate roll 4 is detached from the mounting bracket 20 when the roll is viewed slightly obliquely from the direction of the multi-roll calender body. * ;;; The support rod 6 is disposed in its housing 61, directly below the neck 41a of the spindle 41 of the intermediate roll 4 located in the mounting means 20, wherein the upper surface 6a of the support bar 6 is flush with the upper surface 242a of the lower guide member 242. The fastening bolts between the bearing housing 43 of the intermediate roller 4 and the mounting housing 22 of the rack 20 have been removed, whereby the neck 41a of the shaft pin 41 is. 30 moved to the upper surface 6a of the support bar 6 located below it. At the same time; the roller 53 at the pushing end 5b of the hydraulic cylinder 5 is set in its pushing position so that the upper and lower rollers 53b, 53a located at its upper and lower edges meet the neck 41a of the shaft pin 41.

♦ * · • · · · ·

Next (Fig. 2), the thrust roller 4 is subjected to a thrust by a hydraulic ram 5 35 through a roller 53, whereby the roller roller rolls along a slightly upwardly facing surface 6a of the support rod 6, outwardly from the plane of the roller. 6, to the upper surface 242a of the lower control member, which inclines 1-3 degrees upward with respect to the horizontal plane in the pushing direction. As the intermediate roller 4 rolls upwardly along the upper surface 242a of the lower control member 5 242, the roller 53 used as the pusher end of the hydraulic cylinder 5 simultaneously rotates clockwise from the bearing position at the junction of the hydraulic cylinder pusher 5b and roller 53 (cf.

Figure 3 shows the situation at the end of the pushing movement when the intermediate roll 4 is rolled to the free end 242b of the lower control member 242, along the upper surface 242a of the lower guide member 242. The figure shows how the guide pin 32 of the retaining means 3 rests on the upper surface of the guide lip 31. As the roller 4 is rolled on the shaft 41a of the shaft pin 41 from the support member 6 to the upper surface 242a of the lower guide member 242 and further to the free end 242b of the same guide member 242, the guide pin 15 rotation of the bearing housing 43 with roller 4.

The exit movement of the intermediate roll 4 from the connecting piece 243 between the upper and lower guide members to the free end 242b of the lower guide member 242 is further illustrated in Figure 6. In the situation to the right, the intermediate roll 4 rests on the lower Y of its spindle 41 a support roll 6 on the outer side 243a of the connecting member 243 and a collar 41a thereof are disposed on a roll 53 of a hydraulic cylinder 5 used as a pushing means 53. The roll 53 is disposed relative to the neck 41a 25 of the shaft 41 the upper rollers 53b rest on said shaft pin 41a when the intermediate roller is pushed by the pushing means 5. When a pressure is then applied to the cylinder of the hydraulic cylinder 5, the piston of the hydraulic cylinder protrudes away from the plane of the roller while pushing the piston of the hydraulic cylinder. 5b laa a rolled roll 53, the roll 4 begins to roll along the shaft pin neck 41a 30 along a slightly upwardly sloping top surface 6a of the support piece 6 and further along the upper surface 242a of the Alemman support member 242. During the transfer movement, the roller 53 rotates about its pivoting point such that, at the end of the pushing movement on the hydraulic cylinder 5, when the intermediate roll 4 is near the free end »· 242b of the lower guide member 242, only its lower roll 53a The gradual rotation of the roller 53 during the pushing movement is due to the reciprocating movement of the pusher (piston) of the hydraulic cylinder 5 at the same horizontal level, although the intermediate roll 4 rises slightly as it moves towards the free end 242b of the lower control member 242.

When the intermediate roll 4 is pushed by the pushing means 5 into the free end 242b of the lower guide member 242, out of the plane P of the track 10, the bearing housings 43 located on its axle pins 41 are secured with lift arms 7 so that friction surfaces 71 of said lift arms 7 The friction surfaces 71 of the lift arms 7 prevent the bearing housing 43 from rotating around the shaft pin 41 as the roll is removed from the crane.

The new intermediate roll 4 is introduced into the roller 10 in the reverse order to the removal of the old intermediate roll 10 from the roller 10. However, the upper surface 242a of the lower guide member 242 and the upper surface 6a of the supporting body 6 associated with this upper surface 242a the upper surfaces 242a and 6a being guided in the direction of the roller, the new intermediate roll 4 may be placed on the upper surface 242a of the lower guide member 242, the guide pin 32 mounted on the roller bearing housing 43 being disposed on the guide lip 31 43, the spacer roll 4 rolls under the action of gravity towards the plane P of the track 10 so that the necks 41a of its shaft pin 41 rest on the upper surface 242a of the lower guide member 242 below each neck and on the upper surface 6a of the support piece 6. The guide pin 32 again prevents the bearing housing 43 from rotating with the roll 4 20 so that the bearing housing 43 is in the correct position • · v at the end of the rolling movement and can be immediately secured to the mounting housing 22 of the mounting bracket 20.

By using the above-described intermediate roll changer 1 for removing the intermediate roll 4 from the roller 10, the intermediate roller shaft pins 41 can be made thinner than usual because their ends do not have to be dimensioned to withstand the entire roll weight.

9 99 9 9 «. [] [: 25 Only one embodiment of the invention has been described above, and it will be apparent to one skilled in the art that the invention may be practiced in many other ways within the scope of the inventive idea set forth in the claims.

Thus, the pushing means 5 can also be mounted, for example, on the calender body, and there can also be two pushing means 5 per axle pin 41 of the intermediate roller 4, which are located on each side of the bearing housing, for example.

m O The upper surface 242a of the lower guide member 242 may not be straight along its entire path V 1, but may curve strongly upwards at its free end 242b.

The free end of the lower guide member thus formed contributes to preventing the intermediate roll from accidentally falling from the lower guide means during the transfer of the intermediate roll.

Claims (16)

A spare part (1) for an intermediate roll (4) in a multi-calender, wherein the spare part consists of lightweight packages (2) which are releasably fastened to shaft pins (41) at the ends of the intermediate selection, each of which comprises one the side of the guide shaft (21) attachable to / in the body of the calender and on the other side of a fastening rack (20) which is connected to each end ··· [30 of the guide shaft (21), the fastening rack having a fastening piece (22), at * · Which a bearing housing (43) located on the neck (41a) of the shaft pin (41) can be detachably attached, and at least one pair of control means (24) connected to said clamping piece (22), the control pair (24) consisting of an upper and a lower elongated guide member (241, 242), characterized in that the lower guide member (242) extends, seen from the direction of the clamp, longer than the upper guide member (241), and the plane passing through the lower one the upper surface (242a) of the control means faces upward slightly from h the horizontal plane and that the spare part additionally comprises a pushing means (5), with which a pushing force directed against the shaft pins (41) can be obtained from the plane of the multi-calender's set of vanes (10). A spare part (1) according to claim 1, characterized in that the spare part (1) further comprises a locking member (3) which prevents the bearing housing (43) from rotating simultaneously with the melian roller (4). 10 Spare part (1) according to claim 2, characterized in that the locking member (3) consists of an elongated guide lip (31), which partially attaches to the lower guide member (242) and of a guide pin (32) which is clamped to the bearing housing ( 43). Spare part (1) according to claim 3, characterized in that the rear of the guide lip (31) is clamped to the side (242c) of the lower guide (242) against the bearing housing and runs approximately parallel to the upper surface (242a) of the lower control means. said side, and that the front side of the guide lip (31) extends beyond the free end (242b) of the lower guide member (242) and that the guide pin (32) is stored clamped on the outer side of the bearing housing to (43a) the lower guide member. Spare part (1) according to any of the preceding claims, characterized in that * · * 11m on the side (242c) of the lower control member (242) towards the roller sheath there is a support piece (6) parallel to the upper of the control member (242). surface (242a), wherein the upper surface (6a) used as a supporting surface (6a) is substantially parallel to the upper surface (242a) of said lower control member (242). Spare part (1) according to any of the preceding claims, characterized in that the slider (5) in the spare part (1) consists of a variable-length drive means and: j 'whose rear end (5a) is fixed to the lightweight lever (2) or other the body of the calender (R) and wherein a rotatable wheelchair (53) is connected to its sliding end (5b). Φ Ι Ι • Ψ · · Spare part (1) according to claim 6, characterized in that the drive means (5) is a * ···: hydraulic cylinder, the rear of which (5a) is clamped to the outer side (2b) of the guide shaft (21) against the roller sheath. . • »14 117207 Spare part (1) according to any of the preceding claims, characterized in that the lower surface (241a) of the upper control member (241) and the upper surface (242a) of the upper control member (242) are substantially parallel and between them a control channel (25) . 9. A spare part (1) according to claim 8, characterized in that the upper surface (242a) of the lower guide member forms a 1-3 degree angle with the horizontal plane. Method for removing an intermediate roll (4) from the roll set (10) of a multiple roll calender with an intermediate roll spare part (1) according to any one of claims 1-9, characterized in that the method first opens the attachment between the neck of the shaft pin (41). 41a) and the clamping piece (22) of the fastening rack (20), then the intermediate roller (4) is pushed from the shaft pin (41) with a slider (5) leaking from the plane (P) of the cable set, so that the intermediate roller (4) rotates with the support of the shaft pins (41) along the upper surface (242a) of the lower guide member of the spare part (1) which is directed upwards in the direction of movement of the roller 15, and that the rotation of the bearing housing (43) is prevented by a locking member (3) where the middle roller is rolled away from the plane of the roller set (P). . Method according to claim 10, characterized in that the guide pin (32) fixed at the bearing housing (43) of the intermediate roller (4) is arranged to rotate along a guide lip (31) partially clamped to the lower control means (242), so that the bearing housing ( 43) is prevented from rotating together with the intermediate roller. • ♦ · • i i .v. Method according to Claim 10 or 11, characterized in that the neck (41a) of the shaft (41) is arranged to be supported by a support piece (6) parallel to the upper surface (242a) of the lower control member (242), located immediately below the clamp. after the housing (43) has been released from said clamping piece (22), and when the intermediate roller (4) is pushed away from the shaft pins (41) with a slider (5) from the plane (P) of the roller set, the intermediate roller ( 4) arranged to rotate supported by its shaft pins (41) first along the upper surface (6; 6a) of the support piece and then further along the upper surface (242; 242a) of the lower guide means which is directed upwards in the direction of movement of the roller. * «* * • i • * · Method according to any of claims 10-12, characterized in that the intermediate roller (4) is pushed away from the plane (P) of the roller set by means of sliding members (5) of varying length rotates a wheelchair (53 ) located at said slider * * * *: means (5) slider end (5b) vertically around its storage location. 15 117207 Method according to claim 13, characterized in that the intermediate roller (4) is pushed out with the wheelchair (53) out of the neck pin (41; 41a). Method according to claim 13 or 14, characterized in that, after the intermediate roller (4) has been pushed to the free end (242; 242c) of the lower control member at a given distance from the plane (P) of the cable set, a lifting shaft (7) is fastened. ) at the bearing housing (43) of the intermediate roller (4) so that the friction surface (71) of the lift shaft is arranged on the hoist (41; 41 a) of the shaft pin of the valve assembly. 10 Method for retrieving a new intermediate roll (4) into the roll array (10) of the multi-roll calender with an intermediate roll part (1) according to any of claims 1-9, characterized in that in the process a new intermediate roll (4) is first retrieved to the lower the free end (242; 242c) of the control means such that the locking member (3) lands in a seated position, in which it prevents the bearing housing (43) from rotating together with the roller (4), after which the intermediate roller (4) is substantially lowered under gravity. with the support of its axial pins (41) along the lower control member (242) of the spare part against the plane of the cable assembly (P), and then the bearing housing (43) of the intermediate roller is clamped to the clamping piece (20; 22) of the fastener. • «• · I • 4 i • · ♦ 4« · »• i» • «• 4 4 • 4 · 4 ·· 4 • · 4 • • · 4 • · 4 4 * • 4« · «4 4 4 4 4 4 4 4 # «4 4 4 4 4 4 4 4 4 4 • • 4 4 4 4 4 44 4 4 • 44 4 4 4 4 • 44 4 4 44 • 4 4 4 • 44 4 4