EP0230563B1 - Device for positioning the surfaces of rollers relative to each other - Google Patents

Device for positioning the surfaces of rollers relative to each other Download PDF

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Publication number
EP0230563B1
EP0230563B1 EP86116695A EP86116695A EP0230563B1 EP 0230563 B1 EP0230563 B1 EP 0230563B1 EP 86116695 A EP86116695 A EP 86116695A EP 86116695 A EP86116695 A EP 86116695A EP 0230563 B1 EP0230563 B1 EP 0230563B1
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EP
European Patent Office
Prior art keywords
roller
piston
pressure
pressure chamber
servo motor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP86116695A
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German (de)
French (fr)
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EP0230563A1 (en
Inventor
Wolf-Gunter Stotz
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Sulzer Escher Wyss GmbH
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Sulzer Escher Wyss GmbH
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Priority to CH549285 priority Critical
Priority to CH5492/85 priority
Application filed by Sulzer Escher Wyss GmbH filed Critical Sulzer Escher Wyss GmbH
Publication of EP0230563A1 publication Critical patent/EP0230563A1/en
Application granted granted Critical
Publication of EP0230563B1 publication Critical patent/EP0230563B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21GCALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00Calenders; Smoothing apparatus
    • D21G1/002Opening or closing mechanisms; Regulating the pressure

Description

  • The invention relates to a device for positioning roller surfaces of rollers, in particular intermediate rollers in a calender, which lift the roller surface, to relieve it, to lower it from a working position into another desired position and to hold it, for which purpose on both sides of the roller Actuators with pistons and cylinders to which hydraulic pressure medium can be applied are provided, to which regulating devices are assigned, which are arranged between a pressure source, the pressure chamber of the servomotor and a container for the pressure medium.
  • In particular, such a device is used to quickly remove the roller surfaces from one another via a defined path and to relieve the load in order to compensate for undesired weights, including the so-called edge loads on the individual roller.
  • Although such a device can certainly also be used in other fields of technology for positioning at least two work surfaces that treat a material layer with pressure relative to one another, the field of calenders for finishing material webs is a typical application example of this invention.
  • It is known that the line force at the points of contact between the roller surfaces through which the material webs are guided for treatment must be precisely adjustable over the web width, so that the web is subjected to targeted treatment across its entire width, as a result of which the desired quality of the treated material Product can be achieved.
  • Even very small undesirable differences in the individual sections of the treatment can lead to unusable products.
  • To support the necessary measures, the so-called deflection adjustment rollers, such as. B. developed the NIPCO rollers (registered trademark) with which the desired line forces can be set in the contact points, even different zones across the web width.
  • The deflection adjustment rolls are also used successfully in multi-roll calenders for finishing the paper webs, e.g. B. as the bottom and / or the top roller and possibly also a middle roller of the roll package of the calender.
  • These deflection adjustment rollers have a stationary support, around which a roller jacket is rotatably arranged. In between, adjustable support elements are provided so that the jacket can change its position to the wearer and z. B. is freely movable in the pressing direction.
  • Apart from what has been said, it is generally known, in order to achieve the desired linear forces in the individual columns, to counteract the effects of the so-called overhanging weights or edge weights by relieving them. This means all the weights that act on the rollers outside the edge of the material web and play a role in loading the roller. These are e.g. B. Weight of the end of the roll barrel, weight of the roll neck, roll bearings and bearing supports and various other weights, e.g. B. the scraper, deflection rollers and similar structures that have to be arranged there and that affect the load, that is, the deflection of the individual roller.
  • To reduce the harmful effect of the overhanging weights, for. B. Known supports that support the individual roller on its pin, that is directed against the direction of action of these loads or weights.
  • A construction already known from the German specification DE-A-1 184 621 relates to a pressure generating system for roll calenders with a fixed counter roll and a hydraulically loaded work roll. The working pressure is controlled by a hydraulic-pneumatic double-piston pressure intensifier. This enables the contact pressure to be regulated independently of the position of the work roll. It is also described that the movement of the work roll relative to the counter roll can be limited by creating an oil compensation volume in the hydraulic system. However, these elements are not sufficient to e.g. B. to solve the problem of edge weights.
  • Another problem with calendering is the so-called quick unloading, which means that the rolls in the package are quickly removed from one another, which may be necessary in the event of a malfunction, e.g. B. if a web to be treated breaks. Solutions are also known for this, e.g. B. one according to US-PS-4 266 475, where the z. B. rapid lowering of the lowermost roller of the roller package, the individual rollers hang on a sequence of hydraulically positionable locking devices, so that they are spaced apart in this way. A disadvantage is that the entire weight of the roller package, that is to say all the rollers, is attached to the holding device of the top roller. Also, the complex hydraulic cylinders on this calender, which are mainly used to position the locking devices, are not able to counteract the edge weights during the calender operation.
  • To relieve the load on the intermediate rolls or the relevant nips, complicated and sensitive spindle, gear or worm designs are used to assign a stop in each bearing area to each falling roll, so that at the end of the unloading or opening process the rolls have or had a defined distance from each other.
  • These adjustment devices, which work as automatically as possible, are necessary in multi-roll calenders because rolls with Oberilä Chen made of different materials, e.g. B. rollers with surfaces made of paper or cotton are used, in which their diameter changes depending on the finishing of the surface. This naturally changes the sum of the diameter of the roll bales in such a roll package and thus also the position of the individual roll in space.
  • Such adhesive devices also often serve as a simultaneous device for lifting a roller, especially if a roller of larger diameter is to be installed in place of a roller of smaller diameter.
  • It is an object of the present invention to propose an apparatus of the type described in the beginning which must be able to perform all of these four tasks, i.e. to ensure the lifting, relieving, lowering or holding of the roll surface in a desired position when the calender is "opened". In particular, the device should be able to absorb the so-called marginal loads for compensation. The device should use simple, proven components and should be easy and reliable to adjust.
  • This object is achieved in that each servomotor is arranged between the respective roller surface and an associated frame, that each regulating device has means for applying different pressure to the pressure chamber up to the maximum pressure of the pressure source and for regulating the discharge of the medium from the pressure chamber until it stops has a preselected residual volume of the medium in the pressure chamber, so that the lowering path of the roller surface is automatically always of the same size from any working position currently occupied into the lowered position to be held.
  • This achieves the object on which the invention is based. The device uses known, proven components. The regulating device specified in the further patent claims and preferably to be used also uses known elements and is simple to understand and works reliably. The lowering path remains with changing Arbe i ts of the roll face automatically position the same length.
  • The subject matter of the invention and the advantages which it can achieve are described and explained in more detail below. The description refers to drawings in which exemplary embodiments of the subject matter of the invention are shown schematically.
  • Show it:
    • 1 shows a multi-roll calender in a side view,
    • 2 shows a deflection compensation roller in a side view, partially cut,
    • FIG. 3 shows a deflection compensation roller, partly in an axial section,
    • - Figures 4, 5 and 6, the device in three different working s i situations,
    • 7 shows a servomotor which is integrated with a cylinder piston unit in partial section,
    • 8 shows another embodiment of the cylinder-piston unit,
    • - Figure 9 shows another embodiment of the cylinder piston unit, and
    • - Figure 10 shows another multi-roll calender in partial side view.
  • The device is described using an example where the work surfaces are roll surfaces 1 of seven work rolls arranged in a calender 2. The work surfaces, i.e. the individual rollers are lifted, relieved, lowered or held in a desired position when the lowest roller surface is lowered. Furthermore, it is possible with the device to remove the individual rollers from one another upwards. When the individual roller is relieved, the so-called edge loads, as described above, are also absorbed and counteracted with a force against the effects of the edge loads on the deformation of the respective roller.
  • A main component of the device is a hydraulic servomotor 3 with a piston 4 and a cylinder 5, which is arranged on the frame 6 at both ends of the respective roller. The servomotor 3 is provided between the respective roller surface 1 and its associated frame 6. In Figure 1, the device can only be seen from one side. One has to imagine that a reflection of it also results from the opposite side of the calender. Each servomotor 3 is assigned a regulating device 7 which, as can be seen particularly in FIGS. 4, 5 and 6, is provided between a pressure source 8, the pressure chamber 9 of the servomotor 3 and a container 10 for the hydraulic medium. By means of this regulating device 7 it is possible to apply different pressure of the hydraulic medium to the pressure chamber 9 up to the maximum pressure which can be taken from the pressure source 8. Furthermore, it is possible to let the medium out of the pressure chamber, up to a desired residual volume and to keep this residual volume in the pressure chamber. In this way, it is possible with the aid of the regulating device 7 to carry out the four desired functions, namely the lifting, relieving, lowering or reeling of the roller surfaces 1 in the desired relative position to one another, with the device.
  • In the roll package of the calender, three deflection adjustment rolls 12 1 , 12 2 and 12 3 are arranged with roll sleeves which are freely movable in the pressing direction, the roll 12 being the lowest, the roll 12 1 the top and the roll 12 2 being in the middle of the roll pack arranged.
  • In the calender shown in FIG. 1 is a z. B. from DE-OS-3 004 657.2 known regulating device, which enables the whole roll package to take a stable position, whereby and then always with changing diameters of the individual rollers between the individual rollers, the desired workers be achieved.
  • In the other rolls, the roll surfaces are the surfaces of the roll bales 15, whose pins 16 are mounted on one end of a lever 17. The other end of the lever 17 is pivotally attached to the frame. This pivoting movement enables the roller to move substantially in the vertical direction. In contrast, the deflection adjustment rollers 12 are each mounted on a fixed, standing frame part 14. In this case, because the carrier 13 of the deflection compensation roller 12 is immovably mounted relative to the frame 6, the servomotor 3 is arranged between the roller shell 11 and the stationary carrier 13. This arrangement can be seen in FIGS. 2 and 3. In this way, the servomotor 3 can move the roller jacket 11 in the vertical direction with respect to the carrier 13 and that also means with respect to the other rollers of the roller package of the calender and also relieve the pressure on the roller jacket in the region of its ends. In the case of the other rollers, which are mounted on the levers 17, the servomotor 3 is on the one hand, i.e. e.g. B. with the cylinder on the lever 17 with bolt 41 and on the other hand with its piston rod 40 attached to the frame 6, in this case by means of a bolt 42 to a support member 18 which is itself immovably attached to the frame 6.
  • The described arrangement of the roller package with the other rollers guided by means of the lever 17 has the essential advantage that a possible edge and pinching of the individual rollers to the frame 6 is prevented, as was often the case with the earlier designs. Clamping is understood to be the clamping of the roller or its slide guide during its vertical movement.
  • In the embodiment according to FIG. 10, a calender is shown in which no deflection adjustment rollers are used. All rollers are conventional rollers with roller balls and pins 16. The pins of the top roller are mounted in the frame part 14 fastened to the frame 6. The bottom roll can be lifted by means of a key i TiO nierungsmotors 46 with piston 44 in the pressure chamber 45, or be lowered. The rollers between the top and bottom rollers are supported in supports 14 1 , which have a slide part 14 2 , which is vertically displaceable in the slide guide 43 to the frame. The servomotor 3 is supported on the one hand on the support 14 and on the other hand on the frame 6 on the support part 18.
  • As can be seen particularly well in FIGS. 4, 5 and 6, a regulating device 7, which is located between a pressure source, is provided for actuating the device or the hydraulic servomotor 3 with its cylinder 5, piston 4, piston rod 40 and pressure chamber 9 8, the pressure chamber 9 of the servomotor 3 and a non-pressurized container 10 open to the atmosphere for the hydraulic medium is arranged. It is possible to pressurize the pressure chamber 9 with the maximum pressure or full pressure which can be found in the pressure source 8, or with a pressure which is reduced as required. For this purpose, a first solenoid valve 19 and a reduction valve 22 are provided.
  • The lifting process is shown in FIG. 4: If the solenoid valve 19 is in a first position, which is shown in FIG. 4, the full pressure flows into the pressure chamber 9 of the servomotor 3 from the pressure source 8 through the line 20, valve channel 19 1 and further through the second solenoid valve 23 through its channels 24.
  • Regarding FIG. 4, it remains to be said that the situation shown there represents a situation during the so-called lifting, i.e. that in this case the individual roller surfaces, i.e. the rollers 1, are furthest apart from each other.
  • FIG. 5 shows the relief, in technical terms the nip relieving: If you want to apply a reduced pressure to the pressure chamber 9, you move the first solenoid valve 19 into a second position, which is shown in FIG. 5. The pressure from the pressure source 8 is reduced to a desired level in the reduction valve 22 and the pressure medium continues to flow through the line 21 and through the now open channel 19 2 of the first solenoid valve 19 through the paths 24 1 and 24 2 in the second solenoid valve 23 in the pressure chamber 9. This reduced pressure, which is set by means of the reduction valve 22, is just so high that its effect in the pressure chamber z. B. to record the overhanging weights or marginal loads mentioned, or to counteract them. Of course, this does not prevent the piston 4 of the servomotor 3 from moving in the vertical direction and a working position freely automatically. table to take, which is given by the roller diameter of the individual rollers in the roller package, or the position of the lower roller. This movement is therefore in no way hindered by the servomotors 3.
  • Schnollentomung or so-called quick relief with positioning is shown in Figure 6: It is done by lowering the rollers in a fraction of a second. This is done first by lowering the bottom calender roll (12 3 in Figure 1). The roller surface is lowered by actuating the second solenoid valve 23 by moving it into its second position, as is just shown in FIG. 6. The supply of the hydraulic medium from line 8 via lines 24 and 30 to pressure chamber 9 is thus closed. The pressure chamber 9 is now only connected via the solenoid valve 23 through its channel 25 to the container 10, in which the medium can now flow freely. This moves freely Lich the piston 4 in the cylinder 5 towards the bottom of the cylinder.
  • For the purpose of positioning the roller when lowering, the path of the piston 4 is limited. This can be implemented by any buffers arranged on the frame 6. According to the invention, a hydraulic stop is provided for this. Such a hydraulic stop is shown in FIGS. 4-9 in examples. A cylinder piston unit 26 is provided, where a piston 27 delimits two cylinder spaces 28 and 29 from one another. This unit 26 is connected in parallel to the line 30, which leads to the pressure chamber 9 of the servomotor 3. The parallel connection is made with respect to the pressure space 28 of the unit by means of the line 30 1 and with respect to the pressure space 29 by means of a line 30 2 . This means that, for example, when the pressure chamber 9 is filled with the hydraulic medium, it flows both into the pressure chamber 9 and into the pressure chambers 28 and 29 of the unit 26 which are connected in parallel and fills the pressure chambers. However, this ensures that the piston 27 is always moved to one side to a first rest stop 31. In the case of FIGS. 4, 5, 6 and 8, this is accomplished in that the hydraulically effective area of the piston 27 is different in size from the individual pressure chambers 28 and 29, respectively. Namely, it is smaller in the pressure chamber 29 than in the pressure chamber 28. The reduction is caused by attaching the piston rod 32 to the piston 27, which thus reduces the hydraulically effective area of the piston 27 by its cross-sectional area. Since the hydraulically effective area of the piston 27 in the chamber 28 is larger than in the second pressure chamber 29, the piston 27 is automatically moved to the end face 35 of the pressure chamber 9, where the stop 31 for the piston 27 is located, even if in the two Pressure chambers 28, 29 the same pressure prevails as in the pressure chamber 9.
  • The parallel-connected cylinder-piston unit 26 is the element that enables the individual roller to automatically take up the position because the pressure is the same on both sides of the piston 27, even when the position of the piston 4 is changed.
  • If the roller is now to be lowered, the part of the line 30 is blocked with respect to the solenoid valve 23, as shown in FIG. 6. The medium will now flow from the pressure chamber 9 through the lines 30 and 30 2 into the pressure chamber 29 of the unit 26.
  • As a result, the piston 27 is displaced toward the other side in the direction of the space 28 and in the process presses the medium present there through the line 30 \ which now flows out through the channel 25 through the lifted solenoid valve 23.
  • In a typical simple construction, a stop 36 is provided on the piston rod 32. The piston rod protrudes from the unit 26 through the end wall 35 and is provided with an adjustable stop 36. By moving this stop 36, the path of the piston 27 away from the stop on the end face 35 can be limited as desired. The hydraulic stop specified above is thus constructed and a desired residual volume can be held in the pressure chamber 9 of the servomotor.
  • In order to prevent any mechanical hard blows in the case of the stop setting just described, the outflow of the pressure medium from the space 28 of the unit 26 can be throttled. This can be achieved by means of a throttle device 39 which is arranged in the discharge path from the pressure chamber 9 or 28 and which is adjustable as a function of time or as a function of the stroke of the piston 27.
  • In the line z. B. between the solenoid valves 19 and 23, a throttle device (not shown) can be arranged for damping vibrations or flutter in the system between the pressure chamber 9 of the servomotor and the pressure source 8.
  • The hydraulic system shown bleeds itself automatically. For this purpose, the connections to the individual pressure chambers 9 of the servo motor 3 and 28 and 29 of the cylinder-piston unit are each provided at the top of the relevant space. Furthermore, the container 10, which is open to the atmosphere, is arranged at the top of the system and is provided with an overflow 10 1 for connection to the pressure source.
  • It would also be possible to provide a normal venting of the system by means of venting valves as required.
  • In the already described FIGS. 4, 5, 6 and also in FIG. 8, the cylinder-piston unit 26 is shown as a separate component, which must be connected to the solenoid valve 23 by lines as well as to the pressure chamber 9. For safety or space reasons, a servomotor 3 integrated with the cylinder piston unit is also proposed. Such is shown in Figure 7. The pressure chamber 9 of the servomotor and the pressure chambers 28 and 29 of the cylinder piston unit are accommodated in a common cylinder 5 of the servomotor 3, so that the pressure chamber 9 passes directly into the pressure chamber 29 and not via lines, as described above for the cylinder piston unit 26. At the boundary between the pressure chamber 9 and the pressure chamber 29, a stop 31 is provided, at which the piston 27 is to come to rest. This is achieved in that the piston 27 is additionally loaded in this case by means of a spring 37, which is arranged in the pressure chamber 28, so that the piston is always moved to the stop 31, even if the pressure of the pressure medium on both sides of the piston 27 is the same. The path of the piston 27 away from the stop 31 can be limited, for example, by an adjustable set screw 38 which is directed against the side 34 of the piston 27 which is additionally loaded with the spring 37. The function of this servomotor 3 integrated with the unit 26 is same as described above with Figures 4-6. The pressure chamber 9 is connected to the line 30 to which the line 30 'is connected, which leads into the pressure chamber 28. This means that when the pressure medium is led into the pressure chamber 9 through the line 30, the pressure chamber 28 is simultaneously filled with the medium through the line 30 ', the same pressure being on the two sides of the piston 27. Due to the action of the spring 37, however, the piston 27 is moved into the initial position on the stop 31. When the roller is lowered, the solenoid valve 23 is pushed into the position shown in FIG. 6 and in which the line 30 is blocked by the solenoid valve 23 and the line 30 'is connected to the container 10. In this way, the pressure medium flows from the pressure chamber 9 directly into the space 29 behind the stop 31 by moving the piston 27 away from the stop 31 into the pressure chamber 28, from which the medium is pressed until the piston 27 on the stop screw 38 Rest comes. Of course, a throttle device, which was previously described under the designation 39, can also be provided on the line 30 1 in this case.
  • FIG. 8 shows a cylinder piston unit 26 which differs from the units shown in FIGS. 4, 5 and 6 by the arrangement of the stop. The stop is now not housed on the piston rod 32, but is realized by means of an adjusting screw 38 1 , which is directed against the surface of the piston 27 inclined towards the pressure chamber 28.
  • FIG. 9 shows another embodiment of the cylinder-piston unit which has no piston rod on the piston 27. The piston 27 is pressed against the stop 31 here by means of a compression spring 37.
  • Instead of the described arrangements for displacing the piston 27 towards the stop point 31, it would also be possible to let a greater pressure into the space 28 in this phase than it is in the space 29. This higher pressure would be automatically switched off with the command to release the medium from the pressure chamber 9.
  • The invention is by no means limited only to the subjects of the exemplary embodiments shown and described for their explanation. This also applies to the subject of the regulating device 7, which can also be used with other, e.g. B. electronically controlled means and other valve combinations is conceivable.
  • So z. B. the lowering, or the lowering path of the cylinder 5 or the roller surface 1 in a desired position can also be ensured by other means than with the units 7 and 26 described so far. B. thought of a so-called timer, which is defined in claim 16, or z. B. a displacement measuring system, which is outlined in claims 17 to 19. One can imagine a quick-closing valve instead of the cylinder piston unit 26, which stops the hydraulic medium from flowing out of the servomotor 3.
  • This device for positioning roller surfaces in a calender would also be applicable in those pressing devices where not only cylindrical, but also flat or corrugated pressing surfaces, which are pressed against one another for the treatment of a good, and are arranged one above the other in several floors, for example, be used.

Claims (20)

1. Device for positioning surfaces (1) of rollers relative to each other, in particular of intermediate rollers in a calender (2), which can raise and unload a respective roller, lower it from an operating position into another desired position and keep it therein, for which purpose servo motors (3) which can be supplied with hydraulic pressure medium and which have pistons (4) and cylinders (5) are provided on both sides of the roller surfaces (1), with which adjustment devices (7) are associated which are disposed between a pressure source (8), the pressure chamber (9) of the servo motor (3) and a reservoir (10) for the pressure medium, characterised in that each servo motor (3) is disposed between the respective roller surface (1) and an associated stand (6), that each adjustment device (7) has means for supplying the pressure chamber (9) with differing pressure up to the maximum pressure of the pressure source (8) and for adjusting the discharge of the medium from the pressure chamber (9) until a preselected residual volume of the medium in the pressure chamber (9) is maintained, so that the lowering path of a respective roller surface (1) from any momentarily held operating position into a lowered position which is to be held is automatically the same.
2. Device according to Claim 1, characterised in that the roller surface (1) is the outer surface of the rotatable casing (11) of a deflection compensation roller (12) which is movable along its entire length in the direction of pressing relative to a stationary carrier (13), and that a servo motor (3) is disposed in each case on both sides between the end of the casing and the stationary carrier (13) of the deflection compensation roller (12), the carrier (13) being supported on both sides on a stand section (14).
3. Device according to Claim 1, characterised in that the roller surface (1) is the outer surface of the roll body (15) of a roller, the journals (16) of which are each mounted at one end of a lever (17), the other end of which is pivotably suspended on the stand (6), and that a servo motor (3) is supported on one hand on the lever (17) and on the other hand in the stand (6).
4. Device according to Claim 1, characterised in that the adjustment device (7) has a first solenoid valve (19) for guiding the pressure medium to the pressure chamber (9) of the servo motor (3) either at full (20) or at reduced (21) pressure.
5. Device according to Claim 1, characterised in that the adjustment device (7) has a solenoid valve (23) which is mounted before the pressure chamber (9) of the servo motor (3), with lines for conveying the pressure medium into or out of the pressure chamber (9).
6. Device according to Claim 1, characterised in that the path of the piston (4) of the servo motor (3) can be limited by adjusting the residual volume.
7. Device according to Claim 6 for limiting the path of the piston (4), characterised in that a cy- linder/piston unit (26) is allocated to the servo motor (3), wherein a piston (27) separates two cylinder chambers (28 and 29) from each other, which chambers are connected in parallel to the line (30) leading to the pressure chamber (9) of the servo motor (3), the piston (27) being loaded with a greater force in one cylinder chamber (28) than in the second cylinder chamber (29), so that the piston (27) is displaced as far as a stop point (31) during simultaneous filling of the pressure chamber (9) of the servo motor (3) and said cylinder chamber (28) with the pressure medium, separating off a second cylinder chamber (29) which is connected to the pressure chamber (9) of the servo motor (3), and that the path of the piston (27) away from the stop point (31) during the lowering of the roller surface (1) can be limited by means of a stop means (36, 38, 381).
8. Device according to Claim 7, characterised in that the cylinder-piston unit (26) is a separate component (Fig. 4, 5, 6, 8, 9), the piston (27) being connected to a piston rod (32) which reduces the hydraulically effective surface of this side (33) of the piston (27) relative to the other side (34) of the piston (27) by its area of cross- section.
9. Device according to Claim 8, characterised in that the piston rod (32) is guided through the end wall (35) of the cylinder-piston unit (26), and that the projecting section thereof is provided with an adjustable stop (36) by which the path of the piston can be limited.
10. Device according to Claim 7, characterised in that the cylinder-piston unit (26) is integrated with the servo motor (3) (Fig. 7) so that the pressure chamber (9) of the servo motor (3) merges directly into one cylinder chamber (29) of the cylinder-piston unit (26), which chamber begins at a stop (31, Figure 7), the other side (34) of the piston (27) being additionally loaded with the pressure of a spring (37), and the path of the piston (27) away from the stop (31, Figure 7) being able to be limited by a stop device (38) which is adjustable against this side (34) of the piston (27).
11. Device according to one of the preceding Claims, characterised in that the medium flowing out from the pressure chamber (9) is provided with a restriction device (39).
12. Device according to Claim 11, characterised in that a restriction device (39) is provided, the restricting effect of which can be altered during the lowering of the roller surface (1) and is optionally altered dependent on the path.
13. Device aocording to Claims 5 and 6, characterised in that a restriction device for damping oscillations in the system between the pressure chamber (9) of the servo motor (3) and the pressure source (8) is provided in the line between the pressure chamber (9) and the pressure source (8).
14. Device according to Claim 1, characterised in that the journals (16) of the roller having the roller surface (1) are mounted on either side in supports (14\ the carriage sections (142) of which are movably disposed in carriage quides (43) in the stand (6), and that the servo motor (3) is supported on one side on the support (14 ) and on the other side on the stand (6).
15. Device according to Claim 7, characterised in that for automatic evacuation of the hydraulic system the connections to the individual pressure chambers (9, 28, 29) of the servo motor (3) and the cylinder-piston unit (26) are each provided on the uppermost point of the chamber concerned, and that the reservoir (10) is disposed on the uppermost point of the system.
16. Device according to Claim 1, characterised in that a signal to end or block the discharge of the pressure medium from the pressure chamber (9) takes place at such a distance in time after the signal to start the lowering operation that the duration of the lowering or discharge determines the size of the desired lowering path.
17. Device according to Claim 1, characterised in that a path measuring system follows the path of the piston (4) and causes blocking of the discharge of the pressure medium from the pressure chamber (9) at the moment of travelling of the desired lowering path, which limits the fall, i.e. the lowering path of the roller surface (1).
18. Device according to Claim 17, characterised in that a signal to end or block the discharge of the pressure medium from the pressure chamber (9) is emitted by a path measuring system for the path of the piston (4) in the cylinder (5) away from the height of the roller surface (1) at the moment at which lowering starts, the path measuring system being provided in each case on or in the two servo motors (3) of the respective roller surface (1).
19. Device according to Claim 17 or 18, characterised in that the signal for determining the lowering path or limiting the individual falls of the individual roller surfaces (1) is emitted by a common signal transmitter (50), one signal transmitter (50) being provided on at least one side of the calender (2), which transmitter controls the individual servo motors (3) on both sides or optionally on the respective side of the calender (2).
20. Device according to Claim 1, characterised in that a necessary pressure, which is to be used in each of the servo motors (3) to unload the respective roller surface (1), is set according to the measured result of a measurement of the mechanical stress in the respective roller end or roller journals (13, 16), whereby a minimum tension at these points is desired or is to be achieved.
EP86116695A 1985-12-23 1986-12-01 Device for positioning the surfaces of rollers relative to each other Expired - Lifetime EP0230563B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH549285 1985-12-23
CH5492/85 1985-12-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT86116695T AT50608T (en) 1985-12-23 1986-12-01 Device for positioning rolling surfaces to other.

Publications (2)

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EP0230563A1 EP0230563A1 (en) 1987-08-05
EP0230563B1 true EP0230563B1 (en) 1990-02-28

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EP86116695A Expired - Lifetime EP0230563B1 (en) 1985-12-23 1986-12-01 Device for positioning the surfaces of rollers relative to each other

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US (1) US4736678A (en)
EP (1) EP0230563B1 (en)
JP (1) JPS62156385A (en)
AT (1) AT50608T (en)
CA (1) CA1262418A (en)
DE (2) DE3640161C2 (en)
FI (1) FI86091C (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3702245C3 (en) * 1987-01-27 1993-12-23 Kleinewefers Gmbh Calender
DE3711334A1 (en) * 1987-04-03 1988-10-13 Escher Wyss Gmbh Device for guiding the rolls of an essential vertical calander
DE3713560C2 (en) * 1987-04-23 1990-04-12 Sulzer-Escher Wyss Gmbh, 7980 Ravensburg, De
DE3713561C2 (en) * 1987-04-23 1990-04-19 Sulzer-Escher Wyss Gmbh, 7980 Ravensburg, De
DE8801758U1 (en) * 1987-08-28 1988-05-05 Sulzer-Escher Wyss Ag, Zuerich, Ch
DE3735243A1 (en) * 1987-10-17 1989-04-27 Escher Wyss Gmbh Device for neutralizing overload loads
DE3803490C2 (en) * 1988-02-05 1992-05-07 Mannesmann Rexroth Gmbh, 8770 Lohr, De
DE3936048C2 (en) * 1989-10-28 1993-09-16 Sulzer-Escher Wyss Gmbh, 88212 Ravensburg, De
DE3936128C2 (en) * 1989-10-30 1991-11-21 Sulzer-Escher Wyss Gmbh, 7980 Ravensburg, De
CH683606A5 (en) * 1990-04-26 1994-04-15 Bobst Sa Device with cylinder preload control the working pressure between two coatifs rotating cylinders in a web material-processing machine.
US5165266A (en) * 1991-11-04 1992-11-24 International Rolling Mill Consultants, Inc. Chockless roll support system
DE29521610U1 (en) * 1995-03-09 1997-11-20 Voith Sulzer Finishing Gmbh Calender for the treatment of a paper web
DE19511145C2 (en) * 1995-03-27 2000-07-13 Voith Sulzer Finishing Gmbh Calender for double-sided paper treatment
US5743177A (en) * 1996-02-29 1998-04-28 Union Camp Corporation Enhanced cross-directional caliper control system
FI107626B (en) * 1996-05-06 2001-09-14 Metso Paper Inc Method of rapidly opening the roll system in a calender, especially super calender and a hydraulic system for the rolling system of a calender, especially super calender
DE19757472C2 (en) * 1997-12-23 2000-09-07 Voith Sulzer Papiermasch Gmbh Calender for a web, especially paper web
DE19800331A1 (en) * 1998-01-08 1999-07-15 Voith Sulzer Papiertech Patent Paper calender and method for its operation
US20030126998A1 (en) * 1998-03-17 2003-07-10 Eduard Kusters Maschinenfabrik Gmbh & Co. Kg Calender arrangement
US7096779B2 (en) 1998-03-17 2006-08-29 Eduard Küsters Maschinenfabrik GmbH & Co. KG Calender arrangement
DE19820089C2 (en) * 1998-05-06 2000-06-15 Kuesters Eduard Maschf Process for calendering a web with a vertical multi-roll calender
DE19963944C1 (en) * 1999-12-31 2001-06-13 Koenig & Bauer Ag Method to adjust cylinders of printing machine; involves moving abutment to limit stroke of axle holder for adjustable cylinder at space from base plate and applying adjusting and holding forces
DE10010772C1 (en) * 2000-03-04 2001-05-10 Voith Paper Patent Gmbh Calender has cylinders to support the rollers which are identical but have pistons at different settings for the closed roller nips each with a controlled outflow path for rapid calender roller separation
FI116855B (en) * 2002-06-06 2006-03-15 Metso Paper Inc Arrangements for reducing roll nip
FI5496U1 (en) * 2002-06-10 2002-08-28 Metso Paper Inc Relief cylinder structure of a multi-type calendar
DE102007047658A1 (en) 2007-10-05 2009-04-09 Hte Ag The High Throughput Experimentation Company Parallel reactor with pressure lock
FI121933B (en) * 2007-12-03 2011-06-15 Metso Paper Inc Method and hydraulic arrangement for opening a roll set of a multi-choice calendar

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184621B (en) * 1962-11-03 1964-12-31 Jean Hiedemann Fa od Druckgebungssystem for roll calender, in particular for embossing paper, cardboard. like.
US3331313A (en) * 1965-09-24 1967-07-18 Black Clawson Co Calender stacks having transverse pressure sensing and adjustment means
US3611917A (en) * 1967-06-09 1971-10-12 Dominion Eng Works Ltd Calender stack with swimming roll
US3654833A (en) * 1970-06-29 1972-04-11 Eaton Yale & Towne Hydraulic control circuit
US3777656A (en) * 1972-02-17 1973-12-11 Bruderhaus Maschinen Gmbh Calender and method of operating the same
DE2943644C2 (en) * 1979-10-29 1988-02-18 Kuesters, Eduard, 4150 Krefeld, De
US4266475A (en) * 1979-11-26 1981-05-12 Appleton Machine Company Positioning mechanism for calender rolls
DE3004915C2 (en) * 1980-02-09 1982-07-15 Kleinewefers Gmbh, 4150 Krefeld, De
US4485734A (en) * 1983-03-24 1984-12-04 Appleton Machine Company Four column positioning mechanism for calender machines
FI79875C (en) * 1983-10-17 1990-03-12 Escher Wyss Ag Calendar
IT1173599B (en) * 1984-05-10 1987-06-24 Carle & Montanri Spa The pressure control circuit on the supports of chocolate refiners cylinders

Also Published As

Publication number Publication date
DE3640161A1 (en) 1987-07-02
FI86091B (en) 1992-03-31
FI865143A (en) 1987-06-24
FI865143A0 (en) 1986-12-17
FI865143D0 (en)
EP0230563A1 (en) 1987-08-05
AT50608T (en) 1990-03-15
FI86091C (en) 1992-07-10
US4736678A (en) 1988-04-12
DE3640161C2 (en) 1989-01-26
JPS62156385A (en) 1987-07-11
CA1262418A (en) 1989-10-24
CA1262418A1 (en)
DE3669182D1 (en) 1990-04-05

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