EP0184767A1 - Presse à double ruban pour un gâteau de matière avançant en continu - Google Patents

Presse à double ruban pour un gâteau de matière avançant en continu Download PDF

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Publication number
EP0184767A1
EP0184767A1 EP85115387A EP85115387A EP0184767A1 EP 0184767 A1 EP0184767 A1 EP 0184767A1 EP 85115387 A EP85115387 A EP 85115387A EP 85115387 A EP85115387 A EP 85115387A EP 0184767 A1 EP0184767 A1 EP 0184767A1
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EP
European Patent Office
Prior art keywords
press
pressure
belt
sliding
sliding surface
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.)
Granted
Application number
EP85115387A
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German (de)
English (en)
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EP0184767B1 (fr
Inventor
Kurt Held
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP0184767A1 publication Critical patent/EP0184767A1/fr
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Publication of EP0184767B1 publication Critical patent/EP0184767B1/fr
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band
    • B30B5/062—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band urged by directly-acting fluid pressure
    • 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
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/906—Seal for article of indefinite length, e.g. strip, sheet

Definitions

  • the invention relates to a double belt press for a continuously advancing material web with a rigid press frame, with deflection drums rotatably mounted on bearing bridges of the press frame, with an upper and a lower, endless press belt guided over the deflection drums, with pressure chambers which move up and down from pressure plates and from the inside of the press belts, on the other hand, are delimited by a sliding surface seal, which in turn is arranged displaceably in grooves running around the edge of the pressure plates perpendicular to the inside of the press belts and pressed against the inside of the respective press belt with a force, and with a fluid one Pressure medium in the pressure chambers to generate a pressure on the press belts.
  • Double belt presses of this type are known for the production of endless, web-shaped materials, for example layer materials, chipboard, fiberboard, electrolaminates and the like.
  • elastomers are used as sealing materials, which are resistant up to about 200 ° C.
  • DE-PS 27 22 197 to grasp elastomers, thermosetting or thermoplastic sliding seal materials in U-shaped retaining strips which consist of metal with high tensile strength.
  • support brackets are attached to the legs of the retaining strips, which are supported on transverse bearings in the pressure plate. With this arrangement, frictional forces are introduced into the pressure plate from the sliding surface seal via the retaining strip and the support bracket.
  • DE-PS 29 53 078 it is known (from DE-PS 29 53 078) to arrange two sliding surface seals next to one another at a mutual spacing and to use the space between them to collect the pressure medium that has flowed out. With these sealing arrangements, too, the frictional forces are introduced into the pressure plate via support brackets and retaining strips.
  • the object is achieved in that the sliding surface seal one of the pressure plate turned body made of metal and a dry sliding layer facing the inside of the press belt, connected to the body, which touches the inside of the press belt.
  • FIG. 1 In the double belt press shown schematically in FIG. 1, which is used, for example, for the continuous production of laminates, there are four deflection drums 1, 2, 3 and 4 in bearing bridges 5, 6 on both sides rotatably mounted.
  • An endless press belt 7 or 8 which usually consists of high-tensile steel band, is guided around two of these drums. The direction of rotation is indicated in the deflection drums 1 and 4 by arrows.
  • a reaction zone 9 is formed between the mutually adjacent outer sides of the press belts 7, 8, in which a material web 10 advancing from right to left in FIG. 1 is continuously treated.
  • the material web 10 can consist, for example, of laminates impregnated with synthetic resin, fiber-binder mixtures or the like, which are to be compressed using heat and pressure at the same time. Compression without exposure to heat or with hypothermia is also possible.
  • the pressure exerted on the material web 10 is applied hydraulically to the adjacent inner sides of the press belts 7, 8 via pressure plates 11, 12 and transmitted from there to the material web 10.
  • the reaction forces exerted by the material web are transmitted via the pressure plates 11, 12 and via support beams connected to them into the (only schematically indicated) press frame.
  • the deflection drums 1, 4 arranged on the inlet side are heated and heat the press belts 7, 8.
  • the amount of heat absorbed is transported by the belts into the reaction zone 9 and released there to the material web 10, where it is used, for example, for curing synthetic resin with which the material web is soaked.
  • a pressurized, fluid pressure medium is introduced into the space between the pressure plates 11, 12 and the relevant inner sides of the adjacent press belt run 7 or 8. To the sides, this space, which forms the so-called pressure chamber, is limited by sliding surface seals.
  • a synthetic oil can be used as the pressure medium, which withstands the operating conditions of temperature and pressure prevailing in the double belt press.
  • a gas for example compressed air, can also be used.
  • FIG. 2 shows the edge region of the pressure chamber corresponding to region A in FIG. 1 with the sealing arrangement delimiting the chamber in the forward direction of the material web 10.
  • a groove 15 running parallel to the edge is formed, in which a sliding surface seal is arranged displaceably perpendicular to the inside of the pressure belt 7 facing the pressure plate 11, the sealing surface altogether with the Reference numeral 16 is provided.
  • the pressure prevailing in the pressure chamber 17 between the pressure plate 11, the press belt 7 and the sliding surface seal 16 keeps the sliding surface seal 16 slidably in contact with the inner wall of the groove 15 on the left in FIG. 2.
  • a bore 18 opens into the groove base through which a pressure medium can act on an elastic O-ring 19 which rests on the sliding surface seal 16.
  • the resulting pressure causes the O-ring 19 to be pressed against the seal 16 and this in turn against the press belt 7, as a result of which the pressure chamber 17 is delimited from the atmospheric side of the arrangement (on the left in FIG. 2).
  • the seal 16 can also be pressed against the press belt 7 by other means, for example with the aid of a spring.
  • the groove 15 extends around the pressure plate 11 parallel to the edges thereof.
  • the sliding surface seal 16 is designed as a self-contained frame structure lying below the O-ring.
  • Figure 2 shows the structure of a first embodiment of a sliding surface seal according to the invention.
  • a body per 21 of the seal 16 consists of a metallic material, in particular a high tensile steel grade.
  • the cross section of the body 21 is essentially rectangular with an integrally formed foot 22.
  • a sliding surface designed as a sliding cap 23 is arranged above this foot 22 and is firmly connected to the foot.
  • the sliding cap 23 consists of a composite material, which in turn comprises a dry sliding layer 24 and a carrier layer 25.
  • a composite material whose carrier layer 25 consists of a galvanically copper-plated steel strip is particularly advantageous for the production of the sliding cap.
  • Tin bronze is porous sintered onto the tape, the pores of which are filled in a rolling and sintering process with a mixture of polytetrafluoroethylene and lead, so that a coherent covering layer of polytetrafluoroethylene and lead results. Due to the friction-reducing properties of the polytetrafluoroethylene / lead mixture, this applied top layer acts as a dry sliding layer 24, the sintered structure of the tin bronze layer serving as reinforcement for this sliding layer.
  • a further suitable material for the sliding cap 23 is a composite material which consists of a steel back, to which a copper alloy obtained by powder metallurgy is applied as a metal matrix. Graphite, which serves as a dry lubricant, is embedded in the pores of this metal matrix.
  • an indentation 26 is provided at the transition from the body 21 to the foot 22 on both edges.
  • the sliding cap 23 is placed with the carrier layer 25 on the foot 22 so that the dry sliding layer 24 faces the inner surface of the press belt 7 and the ends of the sliding cap are pulled up to the indentations 26.
  • the sliding surface seal 20 also comprises a body 21 made of metal, for example a high-tensile steel grade.
  • the body 21 has a rectangular cross-section, a sliding cap 27 being applied on the side facing the press belt 7 in such a way that its carrier layer 25 bearing the dry sliding layer 24 lies flat against the body 21.
  • the carrier layer 25 is welded to the body 21 at its two edges, for example by YAG laser welding. The welding can also be replaced by brazing.
  • the friction forces occurring on the sliding surface seal 16 or 20 during operation of the double belt press are absorbed by the body 21. Since this is made of metal, which has an elasticity that is orders of magnitude higher modulus as an elastomeric thermosetting or thermoplastic material, there is practically no deformation caused by the frictional forces.
  • the sealing function is maintained as desired. Since both the body 21 and its reinforcement formed by the sliding cap 23 and 27 in the dry sliding layer 24 have a metallic thermal conductivity, the heat generated by the friction of the seal on the belt surface is dissipated into the pressure plate 11, with which the sliding surface seal due to the Has overpressure in the pressure chamber 17 tight, metallic contact (Fig. 2). There is thus no partial overheating in the material web 10, which could lead to over-hardening.
  • two sliding surface seals 16 can be arranged next to one another and at a mutual distance, as shown in FIG. 4.
  • the pressure chamber 30 is delimited at the top by the pressure plate 11, at the bottom by the press belt 7 and to the side by the sliding surface seal 16.
  • a further seal 16 is arranged in a groove 34 in the pressure plate 11, running parallel to the seal 16, so that a space 35 is created between the two seals, in which escaped pressure medium collects.
  • This leaked pressure medium can be discharged through a bore 36 in the pressure plate 11.
  • the bore 36 can also be connected to a vacuum source.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
EP85115387A 1984-12-14 1985-12-04 Presse à double ruban pour un gâteau de matière avançant en continu Expired EP0184767B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843445636 DE3445636A1 (de) 1984-12-14 1984-12-14 Doppelbandpresse fuer eine kontinuierlich vorlaufende werkstoffbahn
DE3445636 1984-12-14

Publications (2)

Publication Number Publication Date
EP0184767A1 true EP0184767A1 (fr) 1986-06-18
EP0184767B1 EP0184767B1 (fr) 1988-04-27

Family

ID=6252779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115387A Expired EP0184767B1 (fr) 1984-12-14 1985-12-04 Presse à double ruban pour un gâteau de matière avançant en continu

Country Status (6)

Country Link
US (1) US4711168A (fr)
EP (1) EP0184767B1 (fr)
JP (1) JPS61144298A (fr)
CN (1) CN85108832B (fr)
DE (1) DE3445636A1 (fr)
RU (1) RU2071422C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507085A3 (en) * 1991-04-05 1992-11-19 Firma Theodor Hymmen Apparatus for exerting surface pressure on continuously advancing material

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63136921U (fr) * 1987-03-02 1988-09-08
US4992133A (en) * 1988-09-30 1991-02-12 Pda Engineering Apparatus for processing composite materials
US5386769A (en) * 1989-10-03 1995-02-07 Rinne; Erkki Adjustable press roller using silicone elastomer as pressure medium
US5071139A (en) * 1989-12-27 1991-12-10 A.W. Chesterton Company Pressure activated emergency/temporary seal
DE4219996C2 (de) * 1992-06-19 1996-04-11 Hymmen Theodor Gmbh Kontinuierlich arbeitende Presse mit einer mit einem fluiden Druckmittel beaufschlagten Druckkammer
US6340160B1 (en) 1997-09-30 2002-01-22 Gilbert W. Younger System for sealing relatively movable elements
US6908295B2 (en) * 2000-06-16 2005-06-21 Avery Dennison Corporation Process and apparatus for embossing precise microstructures and embossing tool for making same
US20030206256A1 (en) * 2002-05-06 2003-11-06 Drain Kieran F. Display device with backlight
CN101641207B (zh) * 2007-04-05 2012-05-09 克诺普拉斯技术股份公司 连续压力机中滚压板的分板的连接
CN101524897B (zh) * 2008-03-05 2011-04-20 北京化工大学 一种连续胶带平板压机的压板
DE102016102931B4 (de) * 2016-02-19 2018-09-20 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung und Verfahren zur Überwachung und/oder Regelung eines Schmierzustandes in einer kontinuierlich arbeitenden Presse
IT201600091618A1 (it) * 2016-09-12 2018-03-12 Sacmi Dispositivo per la compattazione di materiale in polvere, in particolare materiale ceramico
JP7058852B1 (ja) * 2021-12-28 2022-04-25 株式会社Sgic ダブルベルトプレス

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE565642C (de) * 1931-04-12 1932-12-05 Stromeier & Co G Dichtungsring, insbesondere fuer UEberhitzerelemente, der aus Aluminium und einem haerteren Metall besteht
DE1700136A1 (de) * 1967-02-03 1970-12-23 Ford Werke Ag Dichtelement
DE2421296A1 (de) * 1974-05-02 1975-11-13 Held Kg Adolf Verfahren und vorrichtung zum herstellen von endloslaminaten
DE3126969A1 (de) * 1981-07-08 1983-01-27 Santrade Ltd., 6002 Luzern Gleitflaechendichtung fuer doppelbandpressen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US684617A (en) * 1901-07-17 1901-10-15 Edward Rathbun Packing-ring for steam-engines.
US2135763A (en) * 1935-11-13 1938-11-08 Frederick A Nicholson Endless traveling platen fluid pressure press
CH495209A (fr) * 1968-07-12 1970-08-31 Sandco Ltd Presse pour la fabrication ou le traitement, en continu d'un produit en plaque ou en feuille
US3615099A (en) * 1969-02-26 1971-10-26 Ramsey Corp Multiple layer faced piston rings
DE1953816A1 (de) * 1969-10-25 1971-07-01 Hwm Weh Maschf Hermann Verfahren und Einrichtung zur Herstellung von ein- und mehrschichtigen Spanplatten und zu deren Beschichtung
DE2722197C2 (de) * 1977-05-17 1979-06-07 Kurt 7218 Trossingen Held Gleitflächendichtung an kontinuierlichen Laminiermaschinen
DE2907087C3 (de) * 1979-02-23 1981-10-15 Held, Kurt, 7218 Trossingen Gleitflächendichtung an einer kontinuierlichen Laminiermaschine
DE2953078C2 (de) * 1979-02-23 1983-02-03 Kurt 7218 Trossingen Held Gleitflächendichtung an einer Laminiermaschine
DE3013231C2 (de) * 1980-04-03 1987-01-22 Constructiewerkhuizen De Mets N.V., Kachtem, Izegem Verfahren zum kontinuierlichen Verpressen eines Vlieses sowie Vorrichtung zur Durchführung des Verfahrens
DE3325578C2 (de) * 1983-07-15 1985-11-14 Held, Kurt, 7218 Trossingen Doppelbandpresse zur kontinuierlichen Herstellung von Laminaten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE565642C (de) * 1931-04-12 1932-12-05 Stromeier & Co G Dichtungsring, insbesondere fuer UEberhitzerelemente, der aus Aluminium und einem haerteren Metall besteht
DE1700136A1 (de) * 1967-02-03 1970-12-23 Ford Werke Ag Dichtelement
DE2421296A1 (de) * 1974-05-02 1975-11-13 Held Kg Adolf Verfahren und vorrichtung zum herstellen von endloslaminaten
DE3126969A1 (de) * 1981-07-08 1983-01-27 Santrade Ltd., 6002 Luzern Gleitflaechendichtung fuer doppelbandpressen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507085A3 (en) * 1991-04-05 1992-11-19 Firma Theodor Hymmen Apparatus for exerting surface pressure on continuously advancing material

Also Published As

Publication number Publication date
JPS61144298A (ja) 1986-07-01
RU2071422C1 (ru) 1997-01-10
JPH0242316B2 (fr) 1990-09-21
EP0184767B1 (fr) 1988-04-27
DE3445636A1 (de) 1986-06-19
DE3445636C2 (fr) 1993-05-19
US4711168A (en) 1987-12-08
CN85108832A (zh) 1986-06-10
CN85108832B (zh) 1988-11-02

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