EP2189276B1 - Plattenpresse sowie Pressblech-Presspolster-Einheit - Google Patents

Plattenpresse sowie Pressblech-Presspolster-Einheit Download PDF

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Publication number
EP2189276B1
EP2189276B1 EP08105863.8A EP08105863A EP2189276B1 EP 2189276 B1 EP2189276 B1 EP 2189276B1 EP 08105863 A EP08105863 A EP 08105863A EP 2189276 B1 EP2189276 B1 EP 2189276B1
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EP
European Patent Office
Prior art keywords
press
plate
membrane
liquid
heating plate
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.)
Active
Application number
EP08105863.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2189276A1 (de
Inventor
Rolf Dr. Espe
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.)
Hueck Rheinische GmbH
Original Assignee
Hueck Rheinische GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hueck Rheinische GmbH filed Critical Hueck Rheinische GmbH
Priority to PL08105863.8T priority Critical patent/PL2189276T3/pl
Priority to ES08105863.8T priority patent/ES2586606T3/es
Priority to EP08105863.8A priority patent/EP2189276B1/de
Priority to CA2685801A priority patent/CA2685801C/en
Priority to CN200910225940.XA priority patent/CN101733949B/zh
Priority to RU2009143439/02A priority patent/RU2520873C2/ru
Priority to US12/592,459 priority patent/US8261803B2/en
Publication of EP2189276A1 publication Critical patent/EP2189276A1/de
Application granted granted Critical
Publication of EP2189276B1 publication Critical patent/EP2189276B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/062—Press plates
    • B30B15/064—Press plates with heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/061—Cushion plates
    • 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
    • B30B5/02—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 a flexible element, e.g. diaphragm, urged by fluid pressure

Definitions

  • the invention relates to a platen press, in particular a one-ply or multi-ply cycle press, comprising at least one heating plate, at least one press plate and at least one press pad arranged between the press plate and the heating plate, which has a cushion layer which is liquid at least at the operating temperature of the platen press, on one side is bounded by a fluid-tight membrane, wherein the press plate is located on a side facing a pressed material and wherein the membrane is a flexible polymer material, in particular an elastomeric material, preferably a silicone, fluorine or a silicone-fluorine blended elastomer, or a fluoro-tetrapolymer having.
  • Such plate presses are used in particular for coating wood-based panels with amino resins in the form of phenolic, urea, melamine, or melamine / urea mixed resins.
  • amino resins in the form of phenolic, urea, melamine, or melamine / urea mixed resins.
  • HDF High Density Fibreboards
  • laminate coated for use in the floor area (as a so-called "laminate”
  • decorative surfaces of different design can be realized.
  • a uniform pressure distribution over the entire platen press which can have a working surface of up to 20 m 2 , is of crucial importance.
  • press pads must therefore have sufficient elasticity, ie flexibility, in order to compensate for the thickness tolerances during the pressing process. In addition, they must have a good recovery after pressure relief, as without a replacement of the press pads as large a number of press cycles should be possible.
  • Another important feature of the press pads is their heat resistance and thermal conductivity.
  • the aminoplast resins mentioned above are thermosetting plastics in which the crosslinking process takes place by way of polycondensation. This means that water vapor and excess formaldehyde in vapor form is released during the pressing process. The resulting vapor bubbles must during the pressing process, which runs under a pressure of about 150 N / cm 2 to 600 N / cm 2 and a temperature of 140 ° C to 220 ° C, in the material to be coated, ie, for example, the HDF plate , diffuse. In this context, a different pressure distribution over the press surface can lead to diffusion problems, which are manifested in errors in the surface quality of the finished product.
  • press cushions initially consisted mostly of several layers of kraft paper
  • today's state of the art technology is formed by a wide variety of types of textile press cushions. Due to the textile structure and the imperfectly homogeneous surface structure in principle, differences in the pressure acting effectively on the pressed material over the entire surface of the platen press can not be avoided in practice.
  • a platen press wherein below the press plate, a membrane is arranged in the form of a metallic plate, which is circumferentially welded to the heating plate.
  • a liquid cushion layer is arranged in a closed space between the metallic membrane plate and the heating plate.
  • This padding layer consists of a lead-tin alloy, which is characterized by a good thermal conductivity.
  • the material of the pressure pad is cured.
  • T-shaped anchoring heads are present on the underside of the membrane plate, which engage in corresponding anchoring grooves in the top of the heating plate.
  • a plate press adjacent to the liquid cushion layer on the one hand directly to the back of the press plate.
  • the liquid cushioning layer is directly connected to the heating plate.
  • Movable, introduced into grooves in the heating plate seals are arranged circumferentially on the edge of the heating plate, whereas the attachment of the press plate takes place on protruding edges where fasteners are located, which cooperate with frontally attached to the heating plate mounting brackets.
  • a disadvantage of the platen press described above is the fact that a pressure plate change can only take place after the liquid cushion layer has been more or less completely removed from the space between the press plate and the heating plate. This is done by means of a special vacuum chamber, which is connected via an emptying channel with the pressure pad chamber.
  • the discharge operation before the removal of the press plate and the filling process which is required after the installation of a new press plate by a separate filling channel out of a pressure chamber out again, each requires time, whereby the downtime of the press can be increased.
  • the pressure pad space can never be completely emptied, so that inevitably certain residual amounts of the material of the liquid pressure pad still adhere to the pressure plate to be removed even after the emptying process.
  • a generic laminating press in which the pressure applied to the compact is equalized by means of a fluid.
  • the fluid is in a chamber between the heating plate and a flexible membrane, which is circumferentially connected via a sealing element sealingly connected to the heating plate.
  • JP-A-8192300 discloses a platen press having the features of the preamble of claim 1.
  • the invention has for its object to provide a press pad with liquid cushioning layer that can be easily and quickly replaced.
  • the underlying object is achieved in that the platen press has the features of claim 1.
  • press pads according to the preamble of claim 1 is thus dispensed with the use of metallic membranes for sealing liquid cushioning layers.
  • This fact is based on the approach that flexible polymer materials meet the requirements of pressing pressure and temperature as well as metallic materials, but on the other hand are cheaper to manufacture and to handle.
  • Another advantage of the flexible polymer material is that the membrane very intimately adapts to the heating plate or the press plate and thus avoids insulating air gaps, as they are not ruled out in much stiffer metallic membranes. The heat transfer from the heating plate through the press pad and subsequently the press plate onto the pressed material can therefore reach an excellent level even with the membrane according to the invention containing a flexible polymer material.
  • the liquid cushion layer is bounded on a membrane opposite side of the press plate and connected to this fluid-tight.
  • press plate and membrane thus form a unit which allows a quick change of press plate including press pad.
  • the space between the press plate and the press pad can be permanently closed, so that when changing the press pad is replaced with the liquid cushion layer or there is a closable connection to the room, which before removing the press pad removal of the liquid cushion layer forming material allowed.
  • the membrane and the press plate in edge strips, each projecting over an outline of the heating plate, circumferentially fluid-tightly connected to each other, in particular glued or pressed.
  • the adhesive it is preferable to use a condensation-crosslinked silicone adhesive which is capable of bonding the silicone elastomer-made membrane to the steel material of the press plate in a durable and temperature-resistant manner.
  • circumferential clamping strips can be provided on the edge strips of the press plate, the edge strips of the membrane between them and the press plate clamped fluid-tight.
  • connecting elements in particular in the form of screws, bolts, rivets or staples each exert a clamping force on the diaphragm, press plate and possibly intervening adhesive and / or sealant edge seal.
  • the terminal strips can substantially completely close a gap region between the heating plate and the press plate, as this is given in the pressing operation and thus laterally support end sides of the membrane.
  • the membrane In order to withstand the stresses prevailing in the press operation, the membrane should consist of a foil material with a thickness of between 0.1 mm and 10 mm, preferably between 1 mm and 3 mm.
  • a reinforcing insert in particular with a fabric or an alternative textile fabric of metallic and / or polymeric threads, wherein the reinforcing insert should be completely embedded in the film material to the smoothest possible surface of the membrane to reach.
  • a smooth surface with low roughness is important in order to obtain a large contact surface to the press plate or to the heating plate, whereby the heat transfer is favored.
  • the membrane can also be made so that the polymeric material is doctored onto the reinforcing insert, whereby the insert can be embedded more or less completely.
  • the film material of the membrane with heat-conducting inorganic additives in particular with metal powder and / or quartz powder, be enriched.
  • a heat conductivity-increasing substances may be, for example, alumina, boron nitride or quartz powder.
  • the proportion of additives must not exceed a certain extent, in particular approximately 40%, if possible, so that the elasticity and flexibility of the membrane is maintained.
  • the material may be added to the liquid cushioning layer of long and / or cyclic hydrocarbons, in particular hydraulic oil, to which the thermal conductivity enhancing additives may be added, or to liquid metal or a metal alloy, in particular a lead, at the operating temperature of the platen press and / or tin and / or bismuth-containing alloy.
  • a channel for the supply and removal of the material of the liquid cushion layer can be provided, wherein the channel is the membrane and / or penetrates the press plate and is alternately closed and opened.
  • a press plate press pad unit which consists of a metallic press plate and one of a flexible polymer material existing diaphragm, wherein the membrane and the press plate in respective edge strips fluid-tightly interconnected, in particular glued and / or jammed and / or pressed, and wherein the press plate and the membrane define between them a closed space which is filled with a material or filled is that forms a liquid cushion layer at the operating temperature of a platen press.
  • a press plate press pad unit can be used in existing plate presses, if the principle of textile press pad to the principle of a liquid cushion to be changed.
  • FIG. 1 only partially and schematically illustrated platen press 1, which is equipped in a known manner with a plurality of arranged in the press longitudinal direction press frame with upper struts and lower struts and with supported on the upper struts or Unterholmen hydraulic cylinders in addition to the components shown, moreover, a heating plate 2, a membrane 3, a cushion layer 4 made of a liquid material, a press plate 5 and a compact 6 on.
  • a «tagenpresse is the structure the same symmetrical to a plane of symmetry 7, which is also the median plane of the compact 6.
  • a lower heating plate, not shown is adjoined in turn by a third press pad followed by a second compact.
  • the structure may continue over a plurality of floors in the same way. For the sake of simplicity, only the arrangement above the plane of symmetry 7 will be discussed in the following description.
  • the heating plate 2 formed as a metallic cast plate has a plurality of these passing through heating channels 8, in which circulates liquid thermal oil, which has been heated to the required operating temperature or to a certain extent beyond.
  • An underside of the heating plate 9 is in surface, heat-conducting contact with the consisting of a silicone elastomer, flexible and having a certain elasticity membrane 3.
  • Inside the consisting of a film material membrane 3 is a fully embedded in the silicone material reinforcing insert in the form of aramid fibers existing tissue.
  • the press pad itself consists of the above the press plate 5 arranged liquid cushion layer 4, which consists in the present case of a lead-tin alloy having a melting point of about 70 ° C to 80 ° C and the cushion layer 4 above the press plate 5 enclosing Membrane 3.
  • FIG. 1a results, the sealing of a space 11, in which the liquid cushion layer 4 is located in circumferentially around the heating plate 2 arranged around edge strips 12, which project beyond an outline 13 of the heating plate to the outside.
  • edge strips 12 3 circumferential clamping strips 14 are also arranged above the membrane, which are braced by means of screws 15 with the press plate 5 and clamp in this way the interposed mem brane 3 and thus close the space 11 fluid-tight.
  • the clamping strips 14 may be shaped such that they substantially close a gap region 16 extending perpendicular to the plane of symmetry 7 between the press plate 5 and the underside 9 of the heating plate 2, so that in the operating state of the Press the membrane in the region of the edge strips 12 can be supported against the sufficiently rigid terminal block 14, so that excessive expansion of the membrane in the otherwise unprotected gap regions 16 is prevented.
  • the terminal block 14 is shown as a flat rectangular cross-section which is parallel to the press plate 5, shown.
  • an adhesive layer K which also causes a greater tightness in addition to an increased strength of the edge seal.
  • a connection 17 for a line for filling the space 11 with the material of the liquid cushion layer 4 may be arranged.
  • a hydraulic pump 19 By means of a hydraulic pump 19, the pressure within the liquid cushioning layer 4 during the pressing operation or previously set.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Central Heating Systems (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
EP08105863.8A 2008-11-25 2008-11-25 Plattenpresse sowie Pressblech-Presspolster-Einheit Active EP2189276B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PL08105863.8T PL2189276T3 (pl) 2008-11-25 2008-11-25 Prasa płytowa oraz jednostka płyta-poduszka prasy
ES08105863.8T ES2586606T3 (es) 2008-11-25 2008-11-25 Prensa de placas y unidad de chapa de prensa-cojín de prensa
EP08105863.8A EP2189276B1 (de) 2008-11-25 2008-11-25 Plattenpresse sowie Pressblech-Presspolster-Einheit
CA2685801A CA2685801C (en) 2008-11-25 2009-11-18 Plate press
CN200910225940.XA CN101733949B (zh) 2008-11-25 2009-11-23 层板压力机及冲压板-加压衬垫单元
RU2009143439/02A RU2520873C2 (ru) 2008-11-25 2009-11-24 Этажный пресс, а также узел пресс-прокладки и прессовой подушки
US12/592,459 US8261803B2 (en) 2008-11-25 2009-11-25 Plate press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08105863.8A EP2189276B1 (de) 2008-11-25 2008-11-25 Plattenpresse sowie Pressblech-Presspolster-Einheit

Publications (2)

Publication Number Publication Date
EP2189276A1 EP2189276A1 (de) 2010-05-26
EP2189276B1 true EP2189276B1 (de) 2016-05-18

Family

ID=40527402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08105863.8A Active EP2189276B1 (de) 2008-11-25 2008-11-25 Plattenpresse sowie Pressblech-Presspolster-Einheit

Country Status (7)

Country Link
US (1) US8261803B2 (zh)
EP (1) EP2189276B1 (zh)
CN (1) CN101733949B (zh)
CA (1) CA2685801C (zh)
ES (1) ES2586606T3 (zh)
PL (1) PL2189276T3 (zh)
RU (1) RU2520873C2 (zh)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010036539B4 (de) * 2010-07-21 2013-04-11 Hueck Rheinische Gmbh Presspolster für eine hydraulische Presse
DE102010040886B4 (de) * 2010-09-16 2016-07-28 Spaleck-Stevens Innotech Gmbh & Co. Kg Laminationsvorrichtung und Verwendung einer Folie in einer Laminationsvorrichtung
CN101947866B (zh) * 2010-09-18 2012-02-29 无锡市拓发自控设备有限公司 行程可调多级缓冲气垫
DE102012207174B4 (de) 2012-04-30 2014-08-28 Bundesdruckerei Gmbh Vorrichtung zum Laminieren von Laminiergut, Verfahren zum Montieren eines Presspolsters in der Vorrichtung und Verfahren zum Detektieren eines Risses in dem Presspolster
CZ304597B6 (cs) * 2013-03-26 2014-07-23 Univerzita Tomáše Bati ve Zlíně Přítlačná membrána pro vakuové lisování dílců z polymerních kompozitů
CN103448111A (zh) * 2013-09-02 2013-12-18 昆山硕华模具板有限公司 一种用于压制木板材的热压板
ES2656302T3 (es) * 2014-03-19 2018-02-26 Hueck Rheinische Gmbh Chapa de presión o banda sin fin con transpondedor RFID
DE102014112320B4 (de) * 2014-08-27 2016-12-15 Benteler Automobiltechnik Gmbh Pressumformwerkzeug mit Ausgleichskissen
DE202015006923U1 (de) * 2015-10-02 2015-10-16 Rolf Espe Presspolster für den Einsatz in hydraulischen Ein- oder Mehretagenheizpressen
US10438919B1 (en) 2016-06-28 2019-10-08 Northrop Grumman Systems Corporation Passive hydraulic load leveler for thermal compression bonding
EP3595883A1 (en) * 2017-03-17 2020-01-22 SABIC Global Technologies B.V. Press platens having fluid-driven variable pressing surface geometry and related methods
DE102018133542A1 (de) * 2018-12-21 2020-06-25 Hueck Rheinische Gmbh Presspolster sowie Verfahren zu dessen Herstellung
AT522552B1 (de) 2019-04-15 2023-10-15 Typs Gmbh Formgarnitur für eine Skipresse
CN113002038B (zh) * 2019-12-19 2023-04-07 倍科有限公司 冲压装置以及冲压方法
CN111806045A (zh) * 2020-07-03 2020-10-23 重庆中航新型材料科技有限公司 用于生产复合节能板的专用设备
DE102021000928A1 (de) * 2021-02-22 2022-08-25 Siempelkamp Maschinen- Und Anlagenbau Gmbh Presse zum Bearbeiten eines Werkstücks
IT202100005288A1 (it) * 2021-03-08 2022-09-08 Euronobilitazione S R L Dispositivo e metodo per l’applicazione di fogli in rilievo su pannelli

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DE2724056A1 (de) * 1977-05-27 1978-11-30 Freudenberg Carl Fa Ausgleichsplatte fuer pressenwerkzeug
JPH08192300A (ja) * 1995-01-13 1996-07-30 Hitachi Techno Eng Co Ltd ホツトプレス
DE102005020486A1 (de) * 2004-11-02 2006-05-04 Theodor Hymmen Holding Gmbh Taktpresse und Verfahren zum Verpressen von Werkstücken

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Publication number Priority date Publication date Assignee Title
DE2724056A1 (de) * 1977-05-27 1978-11-30 Freudenberg Carl Fa Ausgleichsplatte fuer pressenwerkzeug
JPH08192300A (ja) * 1995-01-13 1996-07-30 Hitachi Techno Eng Co Ltd ホツトプレス
DE102005020486A1 (de) * 2004-11-02 2006-05-04 Theodor Hymmen Holding Gmbh Taktpresse und Verfahren zum Verpressen von Werkstücken

Also Published As

Publication number Publication date
ES2586606T3 (es) 2016-10-17
EP2189276A1 (de) 2010-05-26
US20100200172A1 (en) 2010-08-12
CA2685801C (en) 2015-11-24
RU2009143439A (ru) 2011-05-27
US8261803B2 (en) 2012-09-11
PL2189276T3 (pl) 2016-11-30
CN101733949B (zh) 2015-05-20
CN101733949A (zh) 2010-06-16
RU2520873C2 (ru) 2014-06-27
CA2685801A1 (en) 2010-05-25

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