EP0087651B2 - Vorrichtung zur Stützung der Pressbänder an wälzkörpergestützten Doppelbandpressen - Google Patents

Vorrichtung zur Stützung der Pressbänder an wälzkörpergestützten Doppelbandpressen Download PDF

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Publication number
EP0087651B2
EP0087651B2 EP83101324A EP83101324A EP0087651B2 EP 0087651 B2 EP0087651 B2 EP 0087651B2 EP 83101324 A EP83101324 A EP 83101324A EP 83101324 A EP83101324 A EP 83101324A EP 0087651 B2 EP0087651 B2 EP 0087651B2
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EP
European Patent Office
Prior art keywords
press
support bearing
pressure
roller
shape
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
EP83101324A
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German (de)
English (en)
French (fr)
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EP0087651B1 (de
EP0087651A2 (de
EP0087651A3 (en
Inventor
Kurt Held
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Individual
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Individual
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Publication of EP0087651A2 publication Critical patent/EP0087651A2/de
Publication of EP0087651A3 publication Critical patent/EP0087651A3/de
Publication of EP0087651B1 publication Critical patent/EP0087651B1/de
Application granted granted Critical
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Classifications

    • 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
    • B30B5/065—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 using anti-friction means for the pressing band
    • B30B5/067—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 using anti-friction means for the pressing band using anti-friction roller means
    • 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

Definitions

  • the invention relates to a roller-supported double belt press according to the preamble of the preceding claim.
  • Double belt presses are used to exert a surface pressure on plate-shaped workpieces or on material webs that are continuously guided through the machine with the supply or removal of heat to or from the pressed material.
  • continuously operating double belt presses allow the pressed goods to move continuously and thus to overlap the pressing and transport process, but in particular to exert surface pressure on any length of material.
  • Presses of known type work, as far as they have proven to be permanently reliable in the past, either according to the fluid cushion principle (cf. DE-A-2 737 629, DE-B-2 722 262, US-A-2 528 168) or according to Role principle.
  • Disadvantages of the fluid cushion machines are their high energy requirement at higher pressures from approximately 200 N / cm 2 and the need existing there to fully cover the working width and length with press material or to provide partially switchable cushions which are susceptible to malfunction.
  • the disadvantage of the roller-mounted double belt presses is the Hertzian pressure that occurs between the support rollers and the press belts, which limits the surface pressures that can be reliably controlled to a technically uninteresting area.
  • an isochore-isobaric double belt press has become known, in the press frame of which pressure chambers are arranged, in which there is a roller bed with press rolls extending over the entire width of the pressure chamber, which are used to calibrate the pressed material.
  • a fluid pressure medium which, in addition to the press rolls, serves to support the press belts.
  • roller pressure exerted by the roller bed placed against the press belt with the pressure chamber is applied, thus increasing the overall surface pressure at such a level configured double belt press is achieved.
  • the special design of the roller bed ensures safe operation while limiting the Hertzian pressure occurring on the press belt to a non-harmful size.
  • the roller or fluid pressure can also be applied individually.
  • a pressure is generated in the additional pressure chamber, which can be acted upon individually with fluid pressure media compared to the shape compensation chamber, and acts on the rollers via the heating plate and the support bearing strips of the roller bed.
  • This pressure is applied from the rollers to the press belt and transferred from there to the material to be pressed.
  • stresses would now arise in the press belt due to these deflections, which are greater than the tensile strength of the press belts and thus lead to their destruction.
  • the lubricant contained in the shape compensation space which comprises the roller bed and is sealed on the sides by means of seals, is pressurized so that it acts as a pressure pad pressure medium and reduces the deflection of the press belt in the longitudinal direction. Since the total of the pressure applied via the roller bed and the pressure medium in the shape-compensating space acts on the material to be pressed, the transmitted surface pressure is simultaneously increased.
  • full-needle needle sleeves are arranged in rows offset from one another on common axes in such a way that their radial distances are only so great that the Have voids between the heating plate, support, press belt and needle sleeves filled with a molded body that allows gaps of the same thickness between the heating plate, support, press belt and needle sleeves to form, into which liquid lubricant can penetrate under capillary action, but on the other hand ensures its shape that it does not hinder the necessary rotating and sliding movements between the press belt and needle sleeves.
  • the fluid or gaseous pressure medium and the seals necessary to maintain the pressure cushion can be dispensed with if the liquid lubrication is maintained by replacing the drag losses of lubricant collected at the outlet of the roller bed.
  • the gap height of the machine is dimensioned so that the rollers have no contact with the press belt and only the roller bed of the lower press belt takes up any sag of the belt package.
  • the different pressures adapted to the material to be pressed are set in the individual fluid cushions.
  • the shape compensation space comprising the entire roller bed and the pressure chamber are divided into individual and mutually independent, pressurizable fluid cushions which are sealed against one another.
  • the needle rollers 2 which are usually arranged in rows parallel to the feed direction of the press belts 6 between support bearing strips 1 on support shafts 12, are offset by half a roller width such that every second support bearing bore 5 is replaced by an opening 3 which is larger than the capillary gap height 4 than the diameter of the needle roller 2.
  • the bearing bores 5 and the opening 3 are offset longitudinally with respect to one another in the tape feed direction, so that needle rollers 2 installed between two bearing bores 5 are offset in the transverse direction.
  • the cavity between two needle rollers 2 is filled by a filler 11 so that to the adjacent needle rollers 2, the heating plate 13 and the support bearing strips attached therein 1 gaps with a suitably dimensioned capillary gap height 4 are formed, into which liquid or semi-liquid lubricants 8 draw in under capillary action.
  • liquid or semi-liquid lubricant 8 is now added to the belt or the roller surfaces of the first row of rollers at the entry of the press belts 6 into the roller bed 7, it is distributed across the roller gap 9 and the remaining excess of 2 adjacent needle rollers 2 each fed through the support bearing gap 10 in the middle of the next following needle roller 2 in the direction of tape feed, where the process described is repeated.
  • an additional shape compensation space 19 and a pressure chamber 15 with seals 16 are provided over the entire roller bed 7 and can be acted upon by fluid pressure media.
  • the shape compensation space 19 is delimited in the vertical direction by the heating plate 13 and the press belt 6.
  • the pressure camera 15 is also limited in the vertical direction by the heating plate 13 and the closure 18. This makes it possible to exert a surface pressure on the press belt 6 in addition to the Hertzian pressure.
  • the fluid pressure medium emerging from the shape-compensating space is stripped off and collected from the press belt with the aid of the seals 14. So that it cannot adversely affect the material to be pressed, bores 17, through which the pressure medium which has escaped are discharged, are made in the shape compensation space 19 comprising the roller bed and under vacuum or vacuum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press Drives And Press Lines (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP83101324A 1982-02-27 1983-02-11 Vorrichtung zur Stützung der Pressbänder an wälzkörpergestützten Doppelbandpressen Expired - Lifetime EP0087651B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3207156 1982-02-27
DE3207156 1982-02-27

Publications (4)

Publication Number Publication Date
EP0087651A2 EP0087651A2 (de) 1983-09-07
EP0087651A3 EP0087651A3 (en) 1984-11-28
EP0087651B1 EP0087651B1 (de) 1988-04-27
EP0087651B2 true EP0087651B2 (de) 1994-06-08

Family

ID=6156908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101324A Expired - Lifetime EP0087651B2 (de) 1982-02-27 1983-02-11 Vorrichtung zur Stützung der Pressbänder an wälzkörpergestützten Doppelbandpressen

Country Status (3)

Country Link
US (1) US4485733A (enrdf_load_stackoverflow)
EP (1) EP0087651B2 (enrdf_load_stackoverflow)
JP (1) JPS58199698A (enrdf_load_stackoverflow)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3424599A1 (de) * 1984-07-04 1986-01-09 Fa. Theodor Hymmen, 4800 Bielefeld Vorrichtung zum aufbringen einer flaechenpressung auf fortschreitende werkstuecke
DE3534478C2 (de) * 1985-09-27 1995-01-26 Held Kurt Doppelbandpresse zum kontinuierlichen Verpressen von Werkstoffbahnen bei erhöhten Temperaturen
US4794855A (en) * 1986-08-05 1989-01-03 Mitsubishi Rayon Engineering Co., Ltd. Continuous press machine
CN1009443B (zh) * 1986-11-14 1990-09-05 库特·赫尔德·法布里肯特 制造复合木材制品板的方法和设备
CN1017881B (zh) * 1987-12-16 1992-08-19 库特·赫尔德·法布里肯特 制造木材板的设备和方法
CA2036755C (en) * 1990-03-30 1998-06-02 Friedrich Bernd Bielfeldt Continuously-operating press
US5213819A (en) * 1990-03-30 1993-05-25 Maschinenfabrik, J. Dieffenbacher Gmbh & Co. Continuously operating press
DE4128024A1 (de) * 1991-08-23 1993-02-25 Held Kurt Kontinuierlich arbeitende doppelbandpresse
DE19615771A1 (de) * 1996-04-20 1997-10-23 Hymmen Theodor Gmbh Doppelbandpresse zum Herstellen und/oder zum Beschichten von bahn- oder plattenförmigen Werkstücken aller Art
US6908295B2 (en) * 2000-06-16 2005-06-21 Avery Dennison Corporation Process and apparatus for embossing precise microstructures and embossing tool for making same
FI123522B (fi) * 2005-04-13 2013-06-14 Raute Oyj Puristinlaitteisto levytuotteiden puristamiseksi
GB2498994B (en) 2012-02-02 2014-03-19 Trackwise Designs Ltd Method of making a flexible circuit
WO2014052998A1 (de) * 2012-10-05 2014-04-10 Berndorf Band Gmbh Doppelbandpresse
AT520168A5 (de) * 2012-10-05 2019-01-15 Berndorf Band Gmbh Doppelbandpresse mit zumindest zwei Bändern
AU2014353437B2 (en) 2013-11-22 2018-08-16 Cytec Industries Inc. Method and system for impregnating fibers to form a prepreg
WO2021076046A1 (en) * 2019-10-18 2021-04-22 Välinge Innovation AB A continuous press arrangement for manufacture of building panels

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459295A (en) * 1944-05-06 1949-01-18 Per F Skoog Apparatus for the flow manufacture of sheet material
US2981307A (en) * 1957-06-24 1961-04-25 Jr Neil Malarkey Press machine
DE1262080B (de) * 1966-05-06 1968-02-29 Alfred Jakob Zwicky Hydrostatisch entlastetes Radialwaelzlager
US3808092A (en) * 1972-03-01 1974-04-30 Beloit Corp Extended fibrous web press nip structure with contoured leading and trailing sills
DE2243465C3 (de) * 1972-09-04 1979-11-22 Kuesters, Eduard, 4150 Krefeld Kontinuierlich arbeitende Presse
DE2421296A1 (de) * 1974-05-02 1975-11-13 Held Kg Adolf Verfahren und vorrichtung zum herstellen von endloslaminaten
DE2421955A1 (de) * 1974-05-07 1975-12-04 Sandco Ltd Bandpresse, insbesondere hydraulische doppelbandpresse, fuer fortlaufend zu behandelndes material
DE7524843U (de) * 1974-08-27 1975-12-18 Konstruktiewerkhuizen De Mets Nv Kontinuierlich arbeitende vor- oder fertigpresse zum herstellen von platten wie span- faser-platten o.dgl.
DE2729263A1 (de) * 1977-06-29 1979-01-04 Siempelkamp Gmbh & Co Vorrichtung zum kontinuierlichen pressen von pressgutmatten im zuge der herstellung von spanplatten, faserplatten u.dgl.
DE2735142C3 (de) * 1977-08-04 1981-03-19 Kurt 7218 Trossingen Held Kontinuierlich arbeitende Presse
DE2737629C2 (de) * 1977-08-20 1982-06-03 Kurt 7218 Trossingen Held Kontinuierlich arbeitende Doppelbandpresse
AT356364B (de) * 1977-12-13 1980-04-25 Hymmen Kg Theodor Vorrichtung zum aufbringen einer flaechen- pressung auf fortschreitende werkstuecke mit mindestens einem umlaufenden pressband
DE2907087C3 (de) * 1979-02-23 1981-10-15 Held, Kurt, 7218 Trossingen Gleitflächendichtung an einer kontinuierlichen Laminiermaschine
DE2937410A1 (de) * 1979-09-15 1981-04-02 Into Solymar Benalmadena Costa Malaga Kerttula Kontinuierlich arbeitende plattenpresse
DE3135031C2 (de) * 1981-09-04 1983-07-21 Held, Kurt, 7218 Trossingen Doppelbandpresse zur Ausübung einer Flächenpressung

Also Published As

Publication number Publication date
EP0087651B1 (de) 1988-04-27
US4485733A (en) 1984-12-04
EP0087651A2 (de) 1983-09-07
JPS58199698A (ja) 1983-11-21
EP0087651A3 (en) 1984-11-28
JPH0229440B2 (enrdf_load_stackoverflow) 1990-06-29

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