• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to the hose roll of a fiber web machine. The hose roller are associated with a non-rotatable pressure axis (11) and a load-bearing on the pressure axis (11) resilient pressure shoe (12). In the belt axis on the output side of the pressure shoe (12) between the pressure shoe (12) and the pressure axis (11) are rear support devices (16). The rear support devices (16) is assigned a sliding element (17) provided in the pressure shoe for permitting a movement in the loading direction of the pressure shoe (12). The sliding element (17) is provided as a tilting strip (19).
    公开号:AT516329A2
    申请号:T50841/2015
    申请日:2015-10-02
    公开日:2016-04-15
    发明作者:Ville Eronen；Tommi Korolainen
    申请人:Valmet Technologies Inc；
    IPC主号:
    专利说明:

    HOSE ROLL OF A FIBERMAKING MACHINE
    A hose roll of a fiber web machine, which hose roll is assigned a non-rotatable pressure axis and a pressure shoe supported on the pressure axis, and where on the output side of the pressure shoe between the pressure shoe and the pressure axis rear support devices are associated with a arranged in the pressure shoe sliding element for allowing movement in the loading direction of the pressure shoe ,
    In EP-Offenlegungsschrift No. 1285121 various hose rolls of the fiber web machine are presented with special structures which also have the so-called tilting change. The so-called front pillars of the pressure shoe, which is supported on the pressure axis, are located on the input side at the two ends of the pressure shoe. The front pillars prevent heat bending of the pressure shoe in the machine direction. Corresponding to the output side of the pressure shoe, the rear support devices are substantially on the entire length of the entire pressure shoe.
    Generally considered in the known construction, the support devices on the input and output sides are positioned with the tilting keys in the pressure axis. During the tilting change, the tilting keys are rotated. In the process, the support devices are moved the same way in the same direction on the input and output sides, with the pressure shoe also moving. When tilting, the load profile produced by the pressure shoe changes. In other words, the pressure ratio is changed between the input and output sides. At this time, the operating parameters of the pressing device consisting of the tube roll and its counter roll can be changed, and various paths can be traveled. In most cases, a good and working setting is developed for the pressing device, with the tilting change an alternative setting is achieved mainly for safety's sake.
    In the known construction, the support of the pressure shoe is expensive. It is particularly expensive to keep the pressure shoe straight and the support of the pressure shoe is influenced by many factors. First, the stiffness of the pressure axis affects the grain size of the pressure shoe. In practice, the pressure axis must be as stiff as possible in the machine direction, but bending definitely occurs.
    On the other hand, in the thrust axis, spline grooves for the tilt keys must be machined, which splines need to be arranged in a straight row as much as possible, and at the same time, the position of the spline with respect to the sliding surface of the pressure shoe must be accurate. In addition to this, the wedge groove itself must be accurately machined, as well as the positioning grooves of the sliplists belonging to the support devices and the sliplists themselves. The effects of multiple accurate design requirements add up, which is very difficult to manage and the realization is very time consuming and requires many resources. It is also a challenge to accurately machine large elements such as the print axis. Especially the V-grooves of the tilting wedge must be parallel. In addition, the parts are expensive.
    In the following, the invention will be described in detail with reference to the accompanying drawings, which illustrate some embodiments of the invention, in which: FIG
    Fig. 1 shows a shoe press unit formed by the hose roll and the backing roll viewed from the machine direction,
    2 is a schematic drawing of a shoe press unit according to FIG. 1 as a cross section, FIG.
    3a shows a section of the embodiment according to the invention in the first tilt position,
    3b, the hose roller of Fig. 3a in the second tilt position,
    Fig. 3c shows parts of the tilted position of Fig. 3b as dissolved.
    In Fig. 1, the hose roller 10 is shown a fiber web machine in principle. The hose roll is associated with a non-rotatable pressure axis and a load bearing pressure shoe supported on the pressure axis. As the name implies, the hose roll is associated with an elastic belt casing 13 arranged around the pressure axis 11. The hose roll 10, together with the counter roll 14, forms therebetween a press shoe through which the fiber web is guided for pressing the fiber web. The press shoe 12 extends substantially to the width of the whole Langnips. Normally, a bend-compensated hose roll is used, which is pressed against the hose roll into the circle of its belt jacket. The above-mentioned pressure shoe 12 has been designed to conform to the shape of the mantle 15 of the mating roll. In Fig. 1, the hose roll 10 is in the lower position, although the hose roll is normally in the upper position. The hose roll is also called shoe roll.
    In Fig. 2, a shoe press unit is considered at the ends of the rollers. The direction of rotation of the belt casing 13 is shown by arrow. In the belt axis 10 on the exit side of the pressure shoe 12 between the pressure shoe 12 and the pressure axle 11 are rear support devices 16. Here, the separate tilting wedge is arranged under the rear support devices. The tilting wedge is usually L-shaped in the known art, whereby another tilting position is possible on the adjacent side of the tilting wedge. When the tilt position is changed, the position of the rear support also goes crazy. A separate slider 33 is secured in connection with the pressure shoe. The task of the rear support devices is to keep the pressure shoe straight and to prevent the movement of the pressure shoe in the running direction of the fiber web, for example in situations where the fiber web is multi-layered in the press nip.
    The rear support devices 16 in the hose roll are associated with a shoe-arranged sliding element 17 for allowing movement in the loading direction of the pressure shoe 12. In Fig. 2, a loading element 18 is shown, which is arranged side by side on the route of the pressure shoe (Fig. 1). Also in the machine direction, there may be two loading elements in succession. The sliding element 17 is shown in FIGS. 3a-3c showing the hose roller according to the invention. Between the coats of the rolls, the fiber web to be pressed usually remains between two press felts or between the press felt and the counter roll (not shown). During operation, the press shoe can not move as much in the loading direction as the presser Sliding element allows. Due to the sliding element, however, the movement of the pressure shoe remains sensitive without getting stuck. The actual loading elements are not shown in FIGS. 3a-3c. The rear support devices absorb the forces caused by the pressing operation but at the same time increase the load on the pressure shoe. According to the invention, the sliding element 17 is designed as a tilting strip 19. In this case, the tilting wedges according to the known technique become unnecessary when two functionalities are surprisingly combined in one and the same part. In addition, the support of the pressure shoe is easier to realize than before and the support is simpler to manufacture than before without demanding machining operations.
    Regulating the machine-direction pressure curve of a nip-type press apparatus is realized by tilting change, whereby the press shoe is moved back and forth in the machine direction. In doing so, it is possible to influence the pressure curve of the longitudinal element in such a way that the pressure level can be adjusted from the end part of the normal, rising pressure curve of the load.
    In the invention, the tilting bar 19 is releasably secured to the output edge 20 of the pressure shoe. The tilting bar remains securely in place and the tipping change is easy by releasing the pure pressure shoe. In addition, the sophisticated machining operations according to the known technique are avoided. A detail of the tilting bar is much easier to implement on a pressure shoe than on a solid pressure axis. In practice, the entire pressure shoe has room in the processing machine, while at the same time ensuring the dimensional and shape accuracy of the attachment point. In this case, the straight position of the pressure shoe can be ensured despite tilting change.
    As shown in Figs. 3a and 3b, the tilting ledge 19 has two different dimensions with respect to its attachment point in the machine direction for producing tilting changes by rotating the tilting ledge 19. The attachment point 21 is shown in Figure 3c and is a notch machined into the pressure shoe 12. Despite the tilt position used, the tilting bar is supported and installed in the pressure shoe. At the same time, the forces from the pressure shoe to the tilting bar always align in the same way, with the support of the pressure shoe remaining invariably independent of the tilting position. The tilting bar 19 is fastened with a plurality of Bolts 22, but the tilting bar 19 has a bore 23 for each bolt (Figure 3c).
    In addition to the novel and unexpectedly arranged tilting bar, the rear support devices according to the invention deviate from the known ones. In the invention, the rear support devices 16 are associated with a rear support 24 which has been integrated as part of the pressure axle 11. In other words, the rear support is a fixed part of the pressure axis. This facilitates manufacturing and simplifies the construction of the tube roller. At the same time, the straightness of the rear support is easier to reach. In addition, the location of the rear support remains unchanged unlike the known technique.
    Furthermore, the rear support devices 16 are assigned a sliding element 25 provided as a contact surface of the tilting bar 19. The material of the sliding element is chosen so that a good sliding pair is created from the sliding element and the tilting strip. For example, the slider may be made of black nitrided steel while the tilt bar is made of bronze. By suitable choice of material, the separate sliding elements can even be omitted. The tilting bar directly touches the rear support, with the sliding surface of a machined casting functioning as such or related (not shown). Thanks to the integrated rear support further sliding elements can be used according to the standard measure. The sliding elements 25 are fastened with bolts 26 to the rear support, that is to say according to the invention on the pressure axis 11. In the invention, the sliding element 25 is arranged in a form-fitting manner on the rear support. In practice, there is an integral wedge on the rear support which prevents early loading of the sliding element. In the embodiment shown, the wedge consists of a groove 27 which contacts the projection 28 of the sliding element 25. The groove and the excavating member are accurately shaped and dimensioned so that the wedge prevents movement of the sliding member in the loading direction of the pressure shoe and also in the opposite direction. At the same time, the bolt is primarily tensioned only, without additional loads.
    Thanks to the new position and support, the tilting bar can be made from several parts with the ends in mutual contraction. This facilitates the manufacture of the tilting bars and the handling, handling and handling in general becomes easier. Accordingly, the slider can be made of a plurality of parts provided with the ends together as a mutual continuation. Thanks to the rear support integrated in the pressure axle and its wedges, even short sliding elements can be precisely positioned and they remain safely in their position. It is also possible to make a tilting lead blank from which parts of suitable catches are sawn off for attachment to the pressure shoe. In practice, there are parts of the slider one to two per width meter of the hose roll. In this case, the length of a part of the sliding element can be 400-600 mm.
    In the belt axis on the input side of the pressure shoe 12 between the pressure shoe 12 and the pressure axis 11 are located on the two ends of the pressure shoe 12 front tilting ledges 29. In the invention, the profile of the front tilting bar 29 corresponds to the profile of the tilting bar 19. In and of itself can Kippungsleisten of a type which can be installed both as a tilting bar and front tilting bar. Thus, the number of tube rolls again becomes lower in comparison with the prior art, and the tilting change is easier than before. At the same time, the strength of the structure and the proper position and trouble-free function of the pressure shoe can be ensured.
    In the new design, the tilt change is realized by rotatable tilt bars. One of the advantages of the new design is the better control of the straightness of the pressure shoe because it gives less influencing variables than the prior art and is easier to control. Integrating the rear support reduces costs as the number of parts becomes less and easier. At the same time, machining is easier and less needed. This also reduces the costs. In addition, thanks to the new design, the front and rear supports of the pressure shoe can be arranged at fixed locations in the machine direction. In the invention, the rear support is integrated in the pressure axis. Instead, only the front supports 30 are fixed at the ends with the bolts 31 on the pressure axle 11. It is also possible to fasten the rear axle accordingly. Here, the form closure is used to form a functional wedge. In other words, the loads are distorted by molds, which reduces the loads on the bolts.
    In Fig. 3c parts of a hose roll according to the invention are shown separated from each other. In the invention, the tilting bar and the front tilting bar are rotated here with respect to the standing axis during the tilting change. More generally, at the tilt change, the ends of the ledges on the leader side become the ends of the drive side and vice versa. Deformations are also possible on other sides of the strip, such as on the bottom surface, although the solution requires more machining. However, the respective configurations are slightly differently positioned in the machine direction as compared to the upper surface deformation. The strips can also be pivoted with respect to their longitudinal axis at the tilt change. It could even be achieved with the bars four alternative tilt positions. In addition, various tilting positions can be used to adjust the positions of the different length from the pressure shoes.
    As the hose roll, and more particularly the construction of its shoe support and manufacture, becomes easier, the manufacturing costs decrease compared with the prior art technique. Alone the integrated rear support and the simpler sliding elements reduce the cost of construction per meter of length almost to a quarter of it. In addition, the integration of the rear support facilitates machining of the printing axis, because the machining of a direct uniform surface is easier to control than an area consisting of a half-meter spaced V-grooves. Preferably, the machining operations can be standardized by size class, thereby facilitating design. By means of the rear support devices according to the invention, the straightness of the pressure shoe, which is important with respect to the press shoe, can be controlled even better than before, more easily and at a reduced cost. There are less sizes than before and they are easier to control than earlier. In doing so, it is possible to offer to the production facilities tilting altematives different than before, without neglecting the cost effectiveness and the functionality.
    权利要求:
    Claims (10)
    [1]
    1. Tubular roller of a fiber web machine, to which tubular roller a non-rotatable pressure axis (11) and a pressure axis (11) supported pressure shoe (12) are assigned, and where on the output side of the pressure shoe (12) between the pressure shoe (12) and the Pressure axis (11) are rear support devices (16) to which a sliding element (17) arranged in the pressure shoe (12) is assigned for permitting movement in the loading direction of the pressure shoe, characterized in that the sliding element (17) is provided as a tilting strip (19).
    [2]
    2. Hose roll according to claim 1, characterized in that the tilting strip (19) is detachably arranged on the output edge (20) of the press shoe (12).
    [3]
    A hose roll according to claim 1 or 2, characterized in that the tipping strip (19) has, in relation to its attachment point (21) in the machine direction, two different dimensions for producing the tilting rotation by turning the tilting strip (19).
    [4]
    A hose roll according to claims 1-3, characterized in that the rear support means (16) is associated with a rear support (24) which has been integrated as part of the pressure axis (11).
    [5]
    A hose roll according to claim 4, characterized in that the rear support means (16) is associated with a sliding element (25) arranged as a bearing surface for the tilting strip.
    [6]
    6. A hose roll according to claim 5, characterized in that the sliding element (25) is arranged in a form-fitting manner on the rear support.
    [7]
    A hose roll according to any one of claims 1-6, characterized in that the tilting strip (19) consists of several parts provided with the ends in mutual contraction.
    [8]
    A hose roll according to claims 5-6, characterized in that the sliding element (25) consists of several parts provided with the ends in mutual contraction.
    [9]
    A hose roll according to any one of claims 1-8, characterized in that there is a front tipping strip (29) on the input side of the pressure shoe (12) between the pressure shoe (12) and the pressure shaft (11) at both ends of the pressure shoe (12) ,
    [10]
    10. hose roller according to claim 9, characterized in that the profile of the front tilting strip (29) corresponds to the profile of the tilting strip (19).
    类似技术:
    公开号 | 公开日 | 专利标题
    EP1425516B1|2005-07-13|Bearing system for cylinders, rolls or drums
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    DE3304783C2|1987-12-03|
    EP0623441B1|1996-09-18|Multipurpose calender
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    DE60107367T2|2005-10-27|DEVICE AND METHOD FOR MOVING A WORKING ROLLER OF A MULTIPOPERATOR
    DE3419435A1|1984-11-29|LINEAR SLIDE ROLLER BEARING
    DE2123529C3|1984-09-20|Roller bearing for the longitudinally movable mounting of a part on a flat running surface, in particular a circulating roller shoe
    DE3011669C2|1982-11-25|Press roll with a device for correcting the deflection of the roll shell
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    DE3419428C2|1988-08-18|
    DE3419450A1|1984-12-13|LINEAR SLIDE ROLLER BEARING
    CH661473A5|1987-07-31|SUPPORT DEVICE FOR THE MOLDING SUPPORT OF A PLASTIC INJECTION MOLDING MACHINE.
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    DE3419447A1|1984-11-29|LINEAR SLIDE ROLLER BEARING
    CH681106A5|1993-01-15|
    AT519484B1|2018-11-15|DEVICE FOR REPLACING A TISSUE IN A TRAINING MACHINE
    DE1452749A1|1969-04-03|Support means for straightening rolls
    DE2947250C2|1983-12-01|Rolling mill immediately downstream of an extruder
    AT514366B1|2015-11-15|QUICK LOCKABLE HUB
    EP0470357A1|1992-02-12|Linear bearing
    同族专利:
    公开号 | 公开日
    AT516329A3|2016-09-15|
    CN105544272B|2018-04-24|
    DE102015116739A1|2016-04-28|
    FI125825B|2016-02-29|
    CN105544272A|2016-05-04|
    AT516329B1|2017-06-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4713147A|1982-05-05|1987-12-15|Oy Tampella Ab|Extended nip press with displaceable center of gravity for the supporting force|
    US4713147B1|1982-05-05|1996-12-31|Valmet Paper Machinery Inc|Extended nip press with displaceable centre of gravity for the supporting force|
    US4713147B2|1982-05-05|1997-11-04|Valmet Paper Machinery Inc|Extended nip press with displaceable center of gravity for the supporting force|
    DE4022800C1|1990-07-18|1991-09-19|J.M. Voith Gmbh, 7920 Heidenheim, De|
    US6083352A|1998-01-30|2000-07-04|Valmet Corporation|Shoe press|
    US20060144545A1|1999-12-10|2006-07-06|Valmet-Karlstad Ab, Karlstad Sweden|Press device having an extended press nip for pressing of a travelling paperboard web, and procedure for controlling the pressure curve in the machine direction by such press nip|
    EP1186701B1|2000-08-31|2008-04-02|Voith Patent GmbH|Press arrangement|
    SE461154B|1988-05-25|1990-01-15|Valmet Paper Machinery Inc|LONG NYP PRESSES BEFORE PAPER OR CARTON MACHINERY|
    DE4133562A1|1991-10-10|1993-04-22|Voith Gmbh J M|ROLLER WITH BEND COMPENSATION|
    SE469600B|1991-12-23|1993-08-02|Valmet Karlstad Ab|pressure shoe|
    DE19622018A1|1996-05-31|1997-12-04|Voith Sulzer Papiermasch Gmbh|Shoe press|
    SE516410C2|2000-05-29|2002-01-15|Valmet Karlstad Ab|Press in a machine for producing a continuous running web of cellulosic fibrous material and method for changing the pressure profile in such a press|
    FI125766B|2012-10-29|2016-02-15|Valmet Technologies Inc|The shoe roll|FI12247U1|2018-10-12|2018-12-14|Valmet Technologies Oy|Arrangement in the belt roll of a fibre web machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI20145936A|FI125825B|2014-10-24|2014-10-24|Fiber web machine's strip roller|
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