EP0330680B1 - Verstärkter pressmantel für eine presseinrichtung zur behandlung bahnförmigen gutes, wie z.b. von papierbahnen, sowie verfahren und vorrichtung zu seiner herstellung - Google Patents

Verstärkter pressmantel für eine presseinrichtung zur behandlung bahnförmigen gutes, wie z.b. von papierbahnen, sowie verfahren und vorrichtung zu seiner herstellung Download PDF

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Publication number
EP0330680B1
EP0330680B1 EP88903841A EP88903841A EP0330680B1 EP 0330680 B1 EP0330680 B1 EP 0330680B1 EP 88903841 A EP88903841 A EP 88903841A EP 88903841 A EP88903841 A EP 88903841A EP 0330680 B1 EP0330680 B1 EP 0330680B1
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EP
European Patent Office
Prior art keywords
jacket
yarns
press
press jacket
casting
Prior art date
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
Application number
EP88903841A
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German (de)
English (en)
French (fr)
Other versions
EP0330680A1 (de
Inventor
Christian Schiel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JM Voith GmbH
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JM Voith GmbH
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Filing date
Publication date
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Priority to AT88903841T priority Critical patent/ATE68539T1/de
Publication of EP0330680A1 publication Critical patent/EP0330680A1/de
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Publication of EP0330680B1 publication Critical patent/EP0330680B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • D21F3/0236—Belts or sleeves therefor manufacturing methods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/901—Impermeable belts for extended nip press
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24058—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in respective layers or components in angular relation
    • Y10T428/24124—Fibers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24496—Foamed or cellular component
    • Y10T428/24504—Component comprises a polymer [e.g., rubber, etc.]
    • Y10T428/24512—Polyurethane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
    • Y10T428/24994—Fiber embedded in or on the surface of a polymeric matrix
    • Y10T428/249942—Fibers are aligned substantially parallel
    • Y10T428/249943—Fiber is nonlinear [e.g., crimped, sinusoidal, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y10T428/2976—Longitudinally varying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]

Definitions

  • the present invention relates to a press jacket (or a press belt) for a press device used for dewatering web-like material, preferably for an extended-nip press, comprising a roller and a pressure shoe with a sliding surface over which the press jacket slides and which is concave according to the diameter of the roller is shaped.
  • the invention also relates to a method and an apparatus for producing such a press jacket.
  • US Pat. Nos. 4,229,253 and 4,238,287 relate to a press jacket for a press device used for dewatering web-shaped material.
  • the pressing device is designed as an extended nip press and comprises a roller and a pressure shoe. The latter has a sliding surface over which the press jacket slides and which is concavely shaped in accordance with the diameter of the roller.
  • the press jacket which is endless in the running direction, consists of an elastomeric jacket material with reinforcing threads embedded therein.
  • US '253 generally only a single layer of reinforcing threads is provided, namely so-called circumferential threads which extend substantially in the running direction and are arranged in a helical pattern.
  • a layer of so-called longitudinal threads can be provided, which extend transversely to the running direction.
  • a layer of peripheral threads is provided, which are sandwiched by two layers of longitudinal threads. The following is said about the manufacturing process in US ′ 253: "The uncured belt structure was then wrapped with a nylon tape and cured in open steam". Accordingly, an inner band or sheath layer is first covered with the reinforcing threads and then with an outer band or sheath layer; then the two layers are vulcanized together. There is therefore a risk that the bond between the two layers is imperfect or not sufficiently permanent.
  • the starting point is a fabric-like reinforcing insert which, due to the spirally wound circumferential threads, is endless or has been made endless by connecting the beginning and end.
  • the production of the press jacket then comprises the following steps: pouring elastomeric material onto one side of the endless reinforcing insert and optionally smoothing the surface that has been created; then turn the product formed so far so that the smoothed surface is on the inside.
  • the press jacket produced in this way ( Figure 2 of US '620) has a rough outer surface because the threads of the fabric-like reinforcing insert partially protrude from the layer of the elastomeric material.
  • the reinforcement insert is therefore susceptible to wear and the service life of the press jacket is therefore unsatisfactory.
  • it is also known to produce a press jacket by additional pouring of elastomeric material on the other side of the reinforcing insert (and optionally by smoothing the second surface) the reinforcing insert according to Figure 3A of US '620 is completely embedded within the elastomeric material.
  • the two-stage pouring of the two-layer elastomeric material is problematic. There is a risk that the bond between the two layers (for example due to inclusions) is imperfect and / or not sufficiently permanent.
  • the object on which the present invention is based is to improve a press jacket of the type described above in such a way that there is no risk of individual layers becoming detached from one another even over a long period of operation. But it should still be ensured that the reinforcing threads are completely embedded within the elastomeric material. Furthermore, the press jacket should be simpler and therefore cheaper to produce without having any qualitative disadvantages.
  • the elastomeric material layer is made from a single casting and cured with homogeneous crosslinking.
  • the finished press jacket according to the invention can thus be recognized by the following features: there are always two layers of reinforcing threads arranged one above the other, the longitudinal threads forming the inner layer and the peripheral threads forming the outer layer and the longitudinal threads extending over the entire (measured transverse to the direction of travel) Extend length of press sleeve; because during the casting process, the longitudinal threads must extend over the length of the press jacket to the clamping points.
  • the reinforcing threads lie completely within a thoroughly homogeneous elastomeric material layer.
  • a roller is known, the deflection of which is adjustable.
  • the roll shell of this roll is made of a rubber-like material and has an inner layer of wires that extend parallel to the roll axis for reinforcement, and also an outer layer of wires in the form of a metallic coil.
  • This metallic coil should be relatively stiff in order to increase the circumferential rigidity of the roll shell.
  • annular inserts can also be provided on the inside of the roll shell, which slide over the support elements (which serve to adjust the deflection).
  • the roller jacket maintains its circular cross-sectional shape.
  • it is important in the press jacket according to the invention that it can adapt as easily as possible to changing radii of curvature of its career. In particular when sliding over the pressure shoe, it should adapt as easily as possible to its concave sliding surface.
  • the press jacket according to the invention must therefore be as flexible as possible, which is why threads are provided for reinforcement, preferably threads made of polyamide or polyester.
  • the elastomeric material layer of the press jacket can be cast in multiple layers in a single operation.
  • the process-specific object on which the present invention is based is a method for producing the press jacket according to the invention described above specify, with which - in particular compared to the method known from DE-OS 33 18 984 - a press jacket can be manufactured which has two layers of reinforcing threads which are completely embedded in the jacket material, ie sufficiently with the two functional surfaces of the press jacket Sheath material are covered.
  • the present invention is also based on the object of specifying a device for producing the press jacket according to the invention.
  • Claims 20 and 21 relate to device features associated with peeling a finished press jacket from the casting.
  • a step of a press 1 for dewatering a (continuous) paper web 2 is shown.
  • This press 1 consists essentially of an upper roller 3 and a lower roller 4, which in turn has a fixed core 5 in which a pressure shoe 6, which is pressed hydraulically against the upper roller 3, is guided.
  • the fixed core 5 and the hydraulically mounted pressure shoe 6 of the lower roller 4 are encased by an endless (tubular) elastic press jacket 7, which consists of an elastomeric material with embedded reinforcing threads.
  • This press jacket 7 runs with its smooth inner surface sliding over the pressure shoe 6, which together with the top roller 3 forms an extended press zone 8 (extended nip press).
  • the outside of the pressure shoe 6 is complementary to the diameter of the upper roller 3, i.e. the pressure shoe 6 has on its sliding surface a cavity corresponding to the diameter of the top roller 3.
  • a device for wetting the inner side of the press jacket 7 provided with lubricant.
  • the paper web 2 is fed between two so-called dewatering felts 9, 10 of the press zone 8 mentioned (arrow a). Due to the friction between the press jacket 7 sliding over the pressure shoe 6 and the drainage felt 10, the press jacket 7 is moved over the pressure shoe 6 (arrow b).
  • the surface of the press jacket 7 can be suitable for absorbing water from the dewatering felt 10, specifically water that the paper web 2 has released to the dewatering felt 10 in the press zone 8.
  • the outer surface of the press shell has 7 grooves and / or blind holes.
  • FIG. 2a shows a cross section (Fig. 2a) (analogous to the representation according to Fig.1) and the second in a view (Fig.2b) on one on the Level of the reinforcing threads cut open press jacket 7.
  • the first-mentioned illustration - Fig. 2a - shows a cast press jacket 7 with a smooth inner surface and still unprocessed outer surface.
  • the thickness of the press jacket 7 is selected in accordance with the intended use, for example very thick press jackets 7 could also be produced by a two-layer or multi-layer layer of cast-on jacket material 17.
  • the press cover 7 according to FIG.
  • 2a shows a constant distance of preferably 1 to 3 mm from the inside and a constant distance from each other a plurality of longitudinal threads 15 evenly distributed over the circumference. These form the inner layer of the reinforcing threads and give the press cover over the width the press zone considers the required dimensional stability.
  • the distance from the inside of the press jacket 7 must be sufficiently large with regard to the wear layer; but it must also be so low that the necessary flexibility is maintained.
  • circumferential threads 16 are provided, which represent the second layer of reinforcing threads.
  • This position of the peripheral threads 16 is formed by winding a thread (or also several threads) along a screw line onto the longitudinal threads 15 and lies against the longitudinal threads 15 with prestress.
  • this pretension must not be so great that the longitudinal threads 15 are deflected too close to the inner wall of the press jacket 7.
  • the from longitudinal and Circumferential reinforcement inserts are always embedded in a uniform layer of the sheath material 17 in order to achieve a thoroughly homogeneous covering.
  • FIG. 2b the detail according to FIG. 2a is drawn in a sectional illustration along the section line A-A.
  • This section A-A runs along the "top" of the circumferential threads 16.
  • the longitudinal threads 15 are aligned parallel to one another at a constant distance; the circumferential threads 16 are also parallel and equidistant from one another, however, according to the manufacturing process to be described later, at an angle to the outer edge of the press cover 7.
  • the longitudinal threads 15 run (at least approximately) parallel to the axis of the cover (see FIG. 7b).
  • FIG. 3 another embodiment for the inner structure and design of the press jacket 7 is shown.
  • a longitudinal thread 15 runs parallel to the inner wall of the press jacket 7; across it, i.e.
  • a plurality of circumferential threads 16 lie equidistantly on the longitudinal thread 15 perpendicular to the plane of the drawing.
  • These circumferential threads 16 here consist of successively flattened sections which are alternately interlaced by 90 ° (see FIGS. 4a and 4b).
  • blind holes 18 have a diameter of approximately 2 to 3 mm and a depth of approximately 2 to 10 mm.
  • the areal share of the total outer surface of the press jacket 7 should be approximately 15 to 30%.
  • the grooves 19, which are additionally or alternatively incorporated into the blind holes 18, have a width of approximately 0.4 to 0.8 mm and have a depth of approximately 1 to 3 mm.
  • a circumferential thread 16 of the special type used in the example of Fig. 3 is shown in two views, once in the longitudinal extension (Fig. 4 a) and once in section B-B (Fig. 4 b).
  • This circumferential thread 16 consists of alternating successive, flattened thread sections 20 which are interlaced with one another in such a way that a sequence of sections aligned perpendicular to one another is produced.
  • This special design of the circumferential threads 16 achieves a substantially better positive fit between the circumferential threads 16 and the jacket material in the cast press jacket 7. The threads are thus optimally fixed and the press jacket 7 is given optimum shape and dimension stability.
  • this form fit is the better, the more irregularly the circumferential threads 16 are formed along their extension.
  • Cross-sectional changes in general, equidistantly applied bruises with remaining round cross sections between these bruises and alternating, entangled bruises according to the example 4 ensure a high form fit between the reinforcing threads and the jacket material.
  • the circumferential threads, the longitudinal threads or both types of reinforcing threads can be provided together with cross-sectional changes of the aforementioned type.
  • the reinforcement threads themselves are so-called monofilaments, i.e. threads not twisted, or they each consist of 2 to 6 monofilament single threads, which are twisted together.
  • one type of reinforcing thread can also be monofilament and the other type twisted. With the monofilament threads, air pockets and mutual rubbing of the threads are avoided from the outset. But even with the reinforcement threads twisted from 2 to 6 monofilament threads, the gaps are so large that the sheath material can penetrate well and well.
  • the reinforcing threads consist of polyamide or polyester because of the strength and processing properties, in particular in the constellation that the longitudinal threads - in terms of elasticity - are made of polyamide and the circumferential threads - in terms of dimensional stability - are made of polyester.
  • Polyurethane is preferably chosen as the elastomeric sheath material because of its high wear resistance.
  • FIG. 5 shows a basic illustration of the overall device.
  • This overall device consists of two Functionally coordinated basic units, a support 26 which can be moved longitudinally on a fixed machine table 25 and a casting body 28 which is rotatably mounted in fixed end shields 27.
  • this is designed as a hollow cylinder which is rotated about its axis via drive means (not shown) rotary drive means and the translatory drive means for the support 26 - indicated by a spindle drive 29 - are coordinated with one another.
  • a specific stroke of support 26 corresponds to a specific angle of rotation of casting body 28.
  • This support 26 which can be moved, for example, via the spindle drive 29 perpendicular to the plane of the drawing in the guide rails 30, carries, as shown in FIG. 5, the unit 31 for the preparation and supply of the elastomeric castable jacket material and on the other hand a device 32 for dispensing the Circumferential thread 16 (or the peripheral threads).
  • the unit 31 for the preparation and supply of the jacket material consists of two storage containers 33 for the components of the jacket material, a mixer 34 for these components, a feed line 35 and a pouring nozzle 36 for delivering the jacket material to the surface of the casting body 28.
  • the said unit 31 determining elements are mechanically rigidly connected to the support 26 and are consequently moved with it in a translatory manner.
  • the pouring nozzle 36 is preferably positioned so that it is above the casting body 28, preferably slightly offset to the side.
  • the device 32 for delivering the (at least one circumferential thread 16) consists of one (or more) thread roller (s) 37 from which the peripheral thread 16 can be pulled off. This thread roller 37 is also firmly connected to the support 26. On the path of the peripheral thread 16 A guide device 38 for the or the unfair threads 16 is arranged between the thread roll 37 and the casting body 28. In this guide device 38, the circumferential threads 16 lying next to one another are positioned axially at the correct distance from one another.
  • the casting body 28 is first prepared, to the extent that 28 longitudinal threads 15 are stretched over the entire circumference at a uniform distance from one another and at a respective uniform distance from the surface of the casting body. These longitudinal threads 15 lie parallel to one another and thus form a coaxial cage arrangement over the circumference of the casting body 28.
  • the beginning of the circumferential thread 16 is then fixed on an end face of the casting body 28.
  • the casting body 28 is rotated (arrow w).
  • the pouring nozzle 36 is opened and the support 26 is moved linearly.
  • the elastomeric jacket material 17 flows onto the surface of the casting body 28 with the stretched longitudinal threads 15 and forms a coaxial press jacket layer on the casting body 28 now the circumferential thread 16 is simultaneously wound up, preferably under a certain pretension.
  • This pretension is dimensioned such that the circumferential thread 16 rests tensioned on the longitudinal threads 15 and even deflects them slightly towards the surface of the casting body 28.
  • FIG. 6 shows a schematic representation of the system shown in FIG. 5 in a top view, specifically in section C-C according to FIG. 5.
  • the longitudinal threads 15 are tensioned on the rotating (arrow w) cast in the bearing plates 27, namely - in the simplest case shown - over tensioning rings 40 which are supported on the end faces of the cast body 28.
  • the support becomes parallel to the axis of the cast body 28 26 in the guide rails 30 (arrow s).
  • the support 26 carries two thread rollers 37 for unwinding two primary threads 16 and a casting nozzle 36.
  • Fig. 6 shows a second pouring nozzle 36 'to solve this problem, which is also rigidly connected to the support 26 and thus synchronously, namely the (first) pouring nozzle 36 lagging, is moved along the casting body 28.
  • a second layer of jacket material 17' can thus be poured on. It is essential that the reinforcement of the press jacket 7 consisting of longitudinal threads 15 and circumferential threads 16 is fully embedded in the first layer of jacket material 17, so that a complete connection between the jacket material and the reinforcing threads is ensured.
  • FIG. 7 shows a detail of the surface of the casting body 28 in two views. (Fig. 7a and Fig. 7b).
  • FIG. 7a shows the arrangement and assignment of the longitudinal threads 15, which are drawn in a meandering manner between two tensioning rings 40a / 40b back and forth along the jacket of the casting body 28.
  • Each of the clamping rings 40a / 40b consists of a cuff-shaped ring 41 which has lugs 42 distributed over the circumference. These lugs 42 determine the spacing of the longitudinal threads 15 with respect to one another and their spacing from the surface of the casting body 28 a flange shoulder 43, via which this clamping ring 40a rests on the end face of the casting body 28.
  • the upper second clamping ring 40b is loosely seated on the casting body 28 and is connected to a radially outwardly directed peripheral projection 44 which in turn can be clamped via a screw connection 45 and a flange 46 which is supported on the second end face of the casting body 28.
  • Said screw connection 45 is loose for inserting the longitudinal thread 15 and for hanging onto the lugs 42 of the two tension rings 40a / b. If the longitudinal thread 15 is hooked over the entire surface of the casting body 28 into the lugs 42 and these thread strands form a closed cage between the tensioning rings 40a / b, the tensioning ring 40b loosely seated on the casting body 28 is tightened towards the front side via the screw connection 45 . So that the longitudinal threads 15 are tensioned.
  • a longitudinal thread guide ring unit 47 is provided, which is moved in advance in synchronism with the casting nozzle 36 (arrow s).
  • This longitudinal thread guide ring unit 47 consists of a spacer ring 48 which lies between the surface of the casting body 28 and the longitudinal threads 15, and a comb-like ring 49 which has grooves corresponding to the spacing of the longitudinal threads 15 from one another.
  • This guide ring unit 47 consisting of the spacer ring 48 and the comb-like ring 49, is connected to the support 26 via a guide device (not shown).
  • FIG. 8 shows a section of the (lower) clamping ring 40a according to section line D-D according to FIG. 7b. From this illustration, the cuff-shaped ring 41 can be seen, which rests on the jacket of the casting body 28 and has a sequence of lugs 42 distributed over the circumference, between which there are grooves. Through these grooves, the longitudinal threads 15 are drawn, which are looped around every second nose 42.
  • FIG. 9 A section of the longitudinal thread guide ring unit 47 is shown in FIG. 9 along the section line E-E according to FIG. 7b.
  • This consists of the spacer ring 48, which rests on the surface of the casting body 28 and supports the longitudinal threads 15 or keeps them at a distance from the casting body.
  • the spacer ring 48 is preceded by the comb-like ring 49, which has grooves 50 corresponding to the distance between the longitudinal threads 15, by means of which the comb-like ring 49 is placed on the casting body 28 via the longitudinal threads 15.
  • the comb-like ring 49 is constructed in several parts, the parts being able to be clamped to one another via screw connections 51. This makes it possible for the ring 49 to be assembled after the longitudinal threads 15 have been tensioned.
  • the spacer ring 48 With regard to the design of the longitudinal thread guide ring unit 47, it is also conceivable to provide the spacer ring 48 with a circumferential web and grooves corresponding to the longitudinal threads 15 and to cover this spacer ring simultaneously with the winding of the longitudinal threads 15.
  • a clamping ring is fitted onto each of the two end regions of the press jacket 7.
  • One clamping ring 53 is firmly connected to the press jacket 7 and dimensioned relative to the casting body 28 so that it can be pulled lengthwise with the press jacket 7, but seals the gap between the press jacket 7 and the casting body 28 well.
  • the second clamping ring 54 is designed such that it remains stationary relative to the casting body 28 and enables the press jacket 7 to slip or pull through.
  • the second clamping ring 54 should also press the press jacket 7 as close as possible to the casting body 28.
  • a fluid is pressed into the area of the joint between the press jacket 7 and the casting body 28 via a feed line 55 leading through the casting body 28 or its wall, this fluid is distributed in this parting line in the manner of an air cushion and the press jacket 7 can be moved by means of a pull ring 56 are deducted.
  • the first clamping ring 53 moves together with the press jacket 7 along the casting body 28 until it strikes the second clamping ring 54 and the press jacket 7 is completely free. This removal is facilitated in that the casting body 28 is coated with a material which reduces the adhesion before the coating of the jacket material. (Fig.10b).
  • the casting body 28 is a hollow cylinder. On this hollow cylinder is a 17 before pouring the jacket material Polyethylene sheath 57 shrunk. If a fluid is now pressed in through holes 58 provided in the wall of the hollow cylinder, a sliding layer is formed in the parting line between the casting body 28 and the polyethylene jacket 57 and the press jacket 7 can be removed together with the polyethylene jacket 57.
  • the above-described method and the device for carrying out this method can be used to produce a press jacket which is relatively inexpensive to produce, since the steps of weaving, making endless and heat-setting a fabric are not necessary, and in principle with a single casting process a stable press jacket can be achieved.
  • relatively thick jackets can be produced - possibly also by multi-layer casting.
  • the outer surface of the press shell usually has to be smoothed after casting. Possibly. must - cf. Fig. 3 - also blind holes and grooves for Water absorption can be incorporated. As far as the inside of the press jacket is concerned, it should be noted that it can remain unprocessed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)
  • Details Of Garments (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
EP88903841A 1987-05-07 1988-05-06 Verstärkter pressmantel für eine presseinrichtung zur behandlung bahnförmigen gutes, wie z.b. von papierbahnen, sowie verfahren und vorrichtung zu seiner herstellung Expired - Lifetime EP0330680B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88903841T ATE68539T1 (de) 1987-05-07 1988-05-06 Verstaerkter pressmantel fuer eine presseinrichtung zur behandlung bahnfoermigen gutes, wie z.b. von papierbahnen, sowie verfahren und vorrichtung zu seiner herstellung.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19873715153 DE3715153A1 (de) 1987-05-07 1987-05-07 Verstaerkter pressmantel fuer eine presseinrichtung zur behandlung bahnfoermigen gutes, wie z. b. von papierbahnen, sowie verfahren und vorrichtung zu seiner herstellung
DE3715153 1987-05-07
CA 570468 CA1321311C (en) 1987-05-07 1988-06-27 Reinforced press jacket for a press unit for the treatment of web-like material, such as paper webs, as well as process and device for its production

Publications (2)

Publication Number Publication Date
EP0330680A1 EP0330680A1 (de) 1989-09-06
EP0330680B1 true EP0330680B1 (de) 1991-10-16

Family

ID=25671963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88903841A Expired - Lifetime EP0330680B1 (de) 1987-05-07 1988-05-06 Verstärkter pressmantel für eine presseinrichtung zur behandlung bahnförmigen gutes, wie z.b. von papierbahnen, sowie verfahren und vorrichtung zu seiner herstellung

Country Status (9)

Country Link
US (1) US5134010A (ja)
EP (1) EP0330680B1 (ja)
JP (1) JP2542250B2 (ja)
AT (1) ATE68539T1 (ja)
BR (1) BR8807056A (ja)
CA (1) CA1321311C (ja)
DE (2) DE3715153A1 (ja)
FI (1) FI88943C (ja)
WO (1) WO1988008897A1 (ja)

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DE4102356C1 (ja) * 1991-01-26 1992-01-23 J.M. Voith Gmbh, 7920 Heidenheim, De
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DE19651766A1 (de) * 1996-12-12 1998-06-18 Voith Sulzer Papiermasch Gmbh Preßmantel für eine Preßvorrichtung
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JP3408416B2 (ja) * 1998-02-26 2003-05-19 市川毛織株式会社 シュープレス用ベルト及びその製造法
DE19860099A1 (de) 1998-12-23 2000-07-06 Voith Sulzer Papiertech Patent Preßmantel und Verfahren zur Herstellung
JP3488397B2 (ja) 1999-04-26 2004-01-19 市川毛織株式会社 シュープレス用ベルト及びその製造方法
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JP3698984B2 (ja) 2000-11-10 2005-09-21 ヤマウチ株式会社 シュープレス用ベルト
JP3507432B2 (ja) 2000-12-13 2004-03-15 ヤマウチ株式会社 製紙用弾性ベルト
US6752908B2 (en) 2001-06-01 2004-06-22 Stowe Woodward, Llc Shoe press belt with system for detecting operational parameters
DE10133531A1 (de) * 2001-07-11 2003-01-30 Kuesters Eduard Maschf Langspalt-Walzenpresse zum Entwässern einer Faserstoffbahn
EP1333120B1 (de) * 2002-02-01 2004-10-27 Thomas Josef Heimbach GmbH & Co. Papiermaschinenbespannung, insbesondere Pressfilz
US7014733B2 (en) * 2002-05-14 2006-03-21 Stowe Woodward L.L.C. Belt for shoe press and shoe calender and method for forming same
EP1428655A1 (en) * 2002-12-12 2004-06-16 KITAMURA, Atsushi Sleeve for press roll and sleeve mounted press roll
US20040234716A1 (en) * 2003-05-21 2004-11-25 Madden Michael D. Method for forming endless belt
US7166195B2 (en) * 2003-07-15 2007-01-23 Albany International Corp. Grooved and perforated layer for use in papermakers' fabric
FI122410B (fi) * 2004-02-03 2012-01-13 Tamfelt Pmc Oy Puristinhihna
CN1673452B (zh) * 2004-03-26 2013-11-06 市川毛织株式会社 靴形压榨带
DE102004033751A1 (de) * 2004-07-13 2006-02-02 Voith Paper Patent Gmbh Walzenmantel
DE102005060590A1 (de) * 2005-12-17 2007-06-21 Voith Patent Gmbh Walzenmantel
FI126363B (fi) 2008-12-12 2016-10-31 Valmet Technologies Oy Kenkäpuristinhihna
DE202008016864U1 (de) 2008-12-19 2009-03-19 Voith Patent Gmbh Walzenbezug
FI20115400A (fi) * 2011-04-26 2012-10-27 Metso Paper Inc Telapinnoite ja menetelmä sen valmistamiseksi
JP6595354B2 (ja) * 2016-01-25 2019-10-23 日本フエルト株式会社 シュープレスベルト用基布及びシュープレスベルト
US11098450B2 (en) 2017-10-27 2021-08-24 Albany International Corp. Methods for making improved cellulosic products using novel press felts and products made therefrom
DE102018122778A1 (de) * 2018-09-18 2020-03-19 Voith Patent Gmbh Verfahren zur Herstellung eines Mantels für eine Breitstreckwalze, Breitstreckwalze sowie Verwendung einer solchen
DE102019126077A1 (de) * 2019-09-27 2021-04-01 Voith Patent Gmbh Pressmantel, dessen Verwendung sowie Presswalze und Schuhpresse
EP3913132A1 (en) 2020-05-20 2021-11-24 Valmet Technologies Oy Belt for a sleeve roll and use thereof
EP3913131A1 (en) * 2020-05-20 2021-11-24 Valmet Technologies Oy Belt for a sleeve roll and use thereof
DE102021124356A1 (de) 2021-09-21 2023-03-23 Voith Patent Gmbh Pressmantel mit als Zwirnen ausgebildeten Verstärkungsfäden

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Also Published As

Publication number Publication date
ATE68539T1 (de) 1991-11-15
JP2542250B2 (ja) 1996-10-09
CA1321311C (en) 1993-08-17
EP0330680A1 (de) 1989-09-06
DE3865666D1 (de) 1991-11-21
FI88943B (fi) 1993-04-15
US5134010A (en) 1992-07-28
FI886049A (fi) 1988-12-30
FI88943C (fi) 1993-07-26
BR8807056A (pt) 1989-10-31
DE3715153A1 (de) 1988-12-01
JPH01503315A (ja) 1989-11-09
WO1988008897A1 (en) 1988-11-17

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