• 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:
    A method and apparatus for introducing an endless fabric loop over rolls in a paper making machine in connection with changing the fabric therein comprising an inflatable changing bag which, upon being inflated, has a vertical cross-sectional configuration in the machine direction which is substantially the same as the configuration of the intended run of the fabric loop over the rolls. The changing bag is located in its deflated condition within the fabric loop which is to be introduced over the rolls whereupon the bag is inflated with the fabric loop encircling the same. The assembly of the inflated changing bag and the encircling fabric loop is located on one side of the paper machine in the region adjacent to the rolls onto which the fabric loop is to be introduced whereupon the fabric loop is moved from over the inflated changing bag onto the paper machine so that it encircles the rolls. The changing bag is preferably provided with a plurality of interior partitions which divide the bag interior into a plurality of independent airtight compartments, each of which extends in the machine direction. As the fabric loop is pulled from the changing bag onto the rolls, the compartments are successively deflated to facilitate the introduction of the fabric loop over the rolls.
    公开号:SU944511A3
    申请号:SU792806011
    申请日:1979-08-16
    公开日:1982-07-15
    发明作者:Ялмари Халтсонен Эйно；Тапио Оксанен Мартти
    申请人:Валмет Ой (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to devices for changing endless fabric in a paper machine, mainly mesh, and can be used in the pulp and paper industry. 5
    A device is known for changing endless fabric in a paper machine, comprising means for shaping the fabric corresponding to the path of its movement in the paper machine, which is made in the form of guide rollers, and means for moving the fabric {1].
    .. However, tissue changes with this fs device are not fast enough.
    The purpose of the invention is to increase productivity.
    To achieve the goal in a 20 device for changing endless fabric in a paper machine, mainly a tree, containing means for shaping the fabric corresponding to the path of its movement in the paper machine, and means for moving the fabric, means for shaping the fabric is made in the form of an inflatable bag , the vertical cross-section of which corresponds to the trajectory of the fabric, while the inflatable bag has vertical sections forming sections in the direction of movement Single or in a paper machine, and valve means for the venting of each section.
    *
    The inflatable bag has holes made in its upper part for installation of mounting elements.
    On the upper wall of the inflatable bag transverse grooves are made to remove mounting elements.
    The inflatable bag section located on the side of the paper machine has a height lower than the frequency of the remaining sections for installing the bag at the service site of the paper machine.
    94451
    In FIG. 1 shows an inflatable bag for tissue change (in isometry); in FIG. 2 - the same, the working position on the side of the paper machine, section; in FIG. 3, section 5 AA in FIG. 2; in FIG. 4 - one of the operations to change tissue; in FIG. 5 “installation of the bag on the side of the paper machine; in FIG. 6 moving endless fabric; on fig. 7 ~ 9 “different stages of the layout of the inflatable bag.
    The device comprises means for shaping the tissue corresponding to the path of its movement in the paper-making machine 15, made in the form of an inflatable bag 1 of thin airtight material, for example, rubber or plastic, and reinforced with the corresponding fiber. The width 20 of the bag 1 is not less than the width of the mesh, and the shape of its vertical cross section basically coincides with the shape of the loop of the mesh 2, when the rolls of the paper machine 3 are 2 j in the position of the mesh.
    As can be seen in the drawings, the bag 1 is divided by partitions 4 into separate geometric sections 5 _ 9, located in the direction of movement of the grid 3 θ parallel to each other (Fig. (0). Each of the sections 5 _ 9 has a drain valve 10, opened, for example, with a cable, so that each section can be individually lowered through its own valve 10. A compressed air hose (not shown) with a valve is connected to each section 5 ~ 9 so that each section can be inflated with a given air pressure. height less than the height of the remaining sections.
    I
    In the upper part of the bag 1 (Fig. 1 and 2) there are holes 11 located horizontally when the bag 45 is in the working position. The holes 11 are surrounded by a sealed wall. On the upper wall of the bag 1 there are slots 12 through which the mounting elements can be removed. fifty
    The wall structure of the bag is shown in FIG. 3. The partition walls 4 are connected by rounded ends 13, from the outside of which a mesh 14 passes, • attached to the central sections 55 of the rounded ends 13.
    The following is a description of how to use bag 1 to change the net 4 ki 2. The shape shown in FIG. 1, bag 1 accepts when its sections 5 “9 are inflated. Before changing the mesh, the old mesh is cut and removed. Then, using a known means, the paper machine rolls defining the mesh path are shifted to a position in which a new mesh can be installed without being stretched too much.
    The loop of the new mesh 2, suspended on mounting elements 15 and cables,. spreads on the floor near the paper machine, and a rolled bag 1 is placed inside it. The principle of the bag layout is shown in FIG. 7 _ 9 · Bag 1 is first rolled out in two directions. The rolling of the bag starts from the position shown in FIG. 7 in the direction of the arrow, whereby the bag takes shape (FIG. 8), after which it is rolled in the direction of the arrow (see FIG. 9) and it takes the shape of a bag in FIG. 4. Then separate sections 5 _ 9 of the bag are inflated in a predetermined sequence, whereby the bag is stretched and becomes elastic inside the mesh loop 2, and the extreme, shorter section 5 is installed on the service platform located on the side of the machine or on similar planes. Using the mounting elements 16 and the uprights 17, the bag 1 is installed in the position shown in FIG. 5- When a new mesh loop 2 covers the bag 1, using special traction cables (not shown) attached to the corners of the loop 2, they begin to pull the loop 2 into the paper machine 3, covering its rolls. In the process of retracting the mesh loops 2, air is first released from section 6, whereby this section assumes the position shown in FIG. 6. The distance that loop 2 must travel along the surface of bag 1 is reduced. In the process of retracting the loop then bleed air from section 7 and repeat this operation from each section until the mesh loop is completely drawn into the machine. Then the bag 1 is removed from the machine 3, and the mounting elements 16 are removed through the holes in the bag 1, after which the bag is rolled up, as shown in FIG. 7 _ 9> and pack it for future use. When folded, the bag takes up very little space; Finally, the rolls of the paper machine are biased, stretching the mesh loop 2 into its final shape.
    Changing the mesh according to the invention can be carried out so that the mounting elements 16 installed under the paper machine are introduced into the holes 11 of bag 1. After that, the bag is inflated with a compressor or other equipment to an almost completely inflated state, and the bag is lifted elements 16. To inflate the bag 1, you can use a compressor that can supply compressed air with a sufficiently low pressure. To speed up the descent of air from the bag section, it is recommended to use a suction. In addition, instead of a single bag, several parallel bags can be used, which together form the assembly shown in FIG. 1.
    The present invention can be applied to change other endless fabrics of a paper machine.
    This device for changing fabrics allows using it to increase the productivity of work on removing and installing fabric in a paper machine.
    权利要求:
    Claims (3)
    [1]
    3E In FIG. 1 shows an inflatable bag for changing fabric (isometric); in fig. 2 - the same, the working position on the side of the paper machine, the cut; in fig. 3, section A-A in FIG. 2; in fig. 4 - one of the operations to change the tissue; in fig. 5 bag installation on the side of the paper machine; in fig. 6 moving endless fabric; in fig. 7-9 different stages of the inflatable bag layout. The device comprises means for shaping the fabric in accordance with the trajectory of its movement in the paper machine, made in the form of an inflatable bag 1 made of a thin air-tight material, for example made of rubber or plastic, and reinforced with an appropriate fiber. The width of the bag 1 is not less than the width of the net, and the shape of its vertical cross section basically coincides with the shape of the mesh loop 2 when the rolls of the papermaking machine 3 are in the mesh change position. As can be seen in the drawings, bag 1 is divided by partitions k into separate geometric sections 5-9, located in the direction of movement of the grid parallel to each other (Fig. (I). Each of the sections has a drain valve 10 that opens, for example, with a cable, so that each section can be lowered individually through its valve 10. Each section 5-9 is supplied with a compressed air hose (not shown) with a valve, so that each section can be inflated with a predetermined air pressure. Section 5 has a height less than that other sections. In the upper part Bag 1 (Figs. 1 and 2) have holes 11 arranged horizontally when the bag is in the working position. Holes 11 are surrounded by an airtight wall. Hfa top wall of bag 1 has grooves 12 through which the mounting elements can be removed. in Fig. 3. The dividing partitions are connected by rounded ends 13, outside of which the grid 1 passes, attached to the central sections of the rounded ends 13. Below is a description of the method of using the bag 1 to change the network 4, Form 2, shown FIG. 1, bag 1 receives when its sections 59 are inflated. Before changing the mesh, the old mesh is cut and removed. Then by means of a known means the rollers of the papermaking machine defining the grid trajectory are moved to a position in which the new grid can be installed without being too tight. New mesh mesh 2, suspended on mounting elements 15 and cables,. It is spread on the floor near the paper machine, and a rolled-up bag 1 is placed inside it. The layout principle of the bag is shown in FIG. 7-9. Bag 1 is first rolled in two directions. Bag opening starts from the position shown in FIG. 7, in the direction of the arrow, whereby the bag takes the form (FIG. 8), after which it is rolled out in the direction of the arrow (see FIG. E) and it takes the form of the bag in FIG. . The individual sections 5-9 of the bag are then inflated in a predetermined sequence, as a result of which the bag tenses and becomes elastic inside the mesh loop 2, and extremely shorter, section 5 is installed on the service platform located on the side of the machine or on similar planes . With the help of the mounting elements 16 and the uprights 17, the bag 1 is placed in the position shown in FIG. 5- When a new mesh of mesh 2 covers bag 1, with the help of special pull cables (not “shown) attached to the corners of loop 2, they begin to pull loop 2 into the papermaking machine 3, covering its rolls. In the process of retracting the mesh loop 2, air is first released from section 6, whereby this section assumes the position shown in FIG. 6. The distance that loop 2 must travel along the surface of bag 1 is reduced. During the looping process, the air is then released from section 7 and this operation is repeated from each section until the mesh loop is fully drawn into the machine. Then the bag 1 is removed from the machine 3, and the mounting elements 16 are removed through the holes in the bag 1, after which the bag is rolled, as shown in FIG. 7-9. and pack it for later use. When folded, the bag 5 1 takes up very little space; Finally, the rolls of the papermaking machine shift, stretching the mesh loop 2 into its final shape. The grid change according to the invention can be carried out so that the mounting elements 16 installed under the papermaking machine are inserted into the openings 11 of the bag 1. Thereafter, the bag is inflated with a compressor or the like of the equipment to almost completely inflated condition lifted on the elements 16. To inflate Meshka 1, a compressor can be used which can supply compressed air with a sufficiently low pressure. Suction is recommended to accelerate the operation of bleeding air from the bag section. In addition, instead of a single bag, it is possible to use several bags arranged in parallel, which together form the unit shown in FIG. 1. The proposed invention can also be applied to change other endless tissues of a papermaking machine. This device for changing fabric allows, when used, to increase the productivity of work on the removal and installation of fabric in a paper machine. Claim 1. A device for changing an endless fabric in a paper machine, preferably a mesh, containing 1 means for shaping the fabric, corresponding to the trajectory of its movement in the paper machine, and means for moving the fabric, differing in that shaping the fabric is made in the form of an inflatable bag, the vertical cross section of which is cooTBTCTByet the trajectory of the fabric, with the inflatable bag having vertical sections forming the sections ki disposed in the direction of movement of the fabric in a paper machine, and valve means for the venting of each section.
    [2]
    2. The device according to claim 1, which is inflated in that the inflatable bag has openings made in its upper part for mounting the mounting elements.
    [3]
    3. The device according to paragraphs. 1 and 2, characterized in that transverse grooves are made on the upper wall of the inflatable bag to remove the mounting elements. . Device on PP. 1-3, characterized in that the inflatable bag section located on the side of the paper machine has a height lower than the rest of the sections for placing the bag on the paper machine maintenance area. Sources of information taken into account during the examination 1. USSR author's certificate №, cl. D 21 F, 1971.
    12
    PlfT.1
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    同族专利:
    公开号 | 公开日
    FI57140B|1980-02-29|
    GB2028394A|1980-03-05|
    CA1107551A|1981-08-25|
    US4321109A|1982-03-23|
    NO792678L|1980-02-19|
    IT7924915D0|1979-08-03|
    US4267018A|1981-05-12|
    IT1122422B|1986-04-23|
    SE7906840L|1980-02-18|
    BR7904941A|1980-04-29|
    DE2933259A1|1980-02-28|
    FR2433612A1|1980-03-14|
    JPS5530493A|1980-03-04|
    FI57140C|1980-06-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2938581A|1956-05-22|1960-05-31|Beloit Iron Works|Fourdrinier wire stringing method and apparatus|
    US3744756A|1971-08-02|1973-07-10|Mfc Survival Ltd|Lifting means|
    US4127441A|1977-11-29|1978-11-28|Dominion Engineering Works Limited|Paper machine wire draping system|
    US4138316A|1978-02-27|1979-02-06|The Black Clawson Company|Fabric stringing method for non-cantilevered fourdrinier machine|DE3131917C2|1981-08-12|1995-07-13|Marker Int|Heel tensioner for a ski binding with integrated ski brake|
    DE3231511C2|1982-08-25|1986-07-24|J.M. Voith Gmbh, 7920 Heidenheim|Device for the lateral insertion of an endless belt into a paper machine|
    SE439652B|1983-10-25|1985-06-24|Nordiskafilt Ab|PAPER MACHINE FILTER ASSEMBLY|
    FI70951C|1984-11-29|1999-05-19|Valmet Oy|A method for replacing fabrics and rolls in a press section of a papermaking machine, and a press section frame structure applying the method|
    FI102845B1|1997-11-17|1999-02-26|Valmet Corp|Method and arrangement for replacement of an endless felt|
    US6447873B1|1999-06-22|2002-09-10|Albany International Corp.|Leader device for installation of on machine seamable papermaker's fabrics and belts|
    DE102009001441A1|2009-03-10|2010-09-16|Voith Patent Gmbh|Apparatus and method for drawing in an endless belt of a paper machine|
    AU2014347079B2|2013-11-05|2018-08-16|Kimberly-Clark Worldwide, Inc.|Endless belt changing apparatus and method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI782521A|FI57140C|1978-08-17|1978-08-17|FOERFARANDET FOER ATT BYTA VAEVNADER I SYNNERHET VIROR I EN PAPPERSMASKIN OCH HJAELPMEDEL FOER ANVAENDNING VID FOERFARANDET|
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