EP3415304B1 - Presse et procede de fonctionnement d'une presse - Google Patents

Presse et procede de fonctionnement d'une presse Download PDF

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Publication number
EP3415304B1
EP3415304B1 EP18160229.3A EP18160229A EP3415304B1 EP 3415304 B1 EP3415304 B1 EP 3415304B1 EP 18160229 A EP18160229 A EP 18160229A EP 3415304 B1 EP3415304 B1 EP 3415304B1
Authority
EP
European Patent Office
Prior art keywords
press
cylinders
control valves
cylinder
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
EP18160229.3A
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German (de)
English (en)
Other versions
EP3415304A1 (fr
Inventor
Hans Fechner
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.)
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Original Assignee
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
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Publication of EP3415304A1 publication Critical patent/EP3415304A1/fr
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B30B1/34—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure involving a plurality of plungers acting on the platen

Definitions

  • the invention relates to a press for pressing material to be pressed, having a press frame, an upper press platen in the upper part of the press and a lower press platen in the lower part of the press, the upper press plate and/or the lower press plate being provided with a plurality of (supported on the press frame and) in several rows ( matrix-like) arranged press cylinders is acted upon and wherein a plurality of control valves connected to the press cylinders are provided.
  • the press can basically be a multi-stage press, e.g. B. act a day press or multi-daylight press that works in cycle mode.
  • the invention particularly preferably relates to a continuously operating press for the continuous pressing of mats to be pressed, with such a continuous press having a heatable upper press platen in the press upper part and a heatable lower press platen in the press lower part and in the press upper part and in the press lower part, endlessly circulating press belts, the press belts being interposed is supported on the press plates by rolling element assemblies (e.g. roll bars).
  • rolling element assemblies e.g. roll bars
  • the invention particularly preferably relates to a press for pressing mat-shaped material to be pressed, e.g. B. of pressed material mats with the formation of plate-like materials (pressed material plates).
  • This can in particular be a press for the production of wood-based panels, so that mat-shaped grit (fibers/chips) is pressed in the press to form a wood-based panel.
  • wood-based panel means in particular chipboard or fibreboard, e.g. B. MDF board.
  • the invention also relates to presses for processing other materials, e.g. B. for the production of laminate boards, with such a laminate press (which is usually designed as a short-cycle press), stacked material to be pressed is pressed into laminate boards. It can also be a press for the production of fiber composite materials, e.g. B. an SMC press.
  • a press is always meant which is equipped with a plurality of press cylinders arranged in a plurality of rows, each row having a plurality of press cylinders.
  • the press cylinders are equipped as hydraulic cylinders and are consequently connected to a hydraulic system, i.e. the hydraulic cylinders are acted upon by the hydraulic medium via control valves, with the hydraulic system also usually having at least one reservoir for the hydraulic medium and one or more pumps.
  • Such a press for the production of boards to be pressed in the embodiment as a continuous press is z. B. from the DE 43 42 279 C1 known.
  • the upper press platen is loaded with working cylinder piston arrangements, which are designed as differential cylinder arrangements.
  • the cylinders are controlled with the aid of a control and/or regulating unit via a hydraulic system, the control and/or regulating unit having a computer-equipped control and/or regulating device and a valve control device for the valves of the hydraulic system.
  • the basic structure of the hydraulic system includes a working high-pressure branch for applying the working high pressure to the working cylinder piston arrangements and a counter-high-pressure branch, which is connected to the same high-pressure source as the working high-pressure branch, as well as a low-pressure control branch, i.e. the control of the press cylinders takes place in turn hydraulically via the control branch, which in turn itself includes a large number of valves.
  • a working high-pressure branch for applying the working high pressure to the working cylinder piston arrangements
  • a counter-high-pressure branch which is connected to the same high-pressure source as the working high-pressure branch, as well as a low-pressure control branch, i.e. the control of the press cylinders takes place in turn hydraulically via the control branch, which in turn itself includes a large number of valves.
  • an embodiment of a continuous press is known in which one press plate (z. B. the upper press plate) z. B. on the one hand press cylinder are connected as a plunger cylinder and on the other hand as a retraction cylinder.
  • the WO 00/00346 A1 describes a press that can also be designed as a continuous press, in which the cylinders of the press cylinders arranged in a row are arranged in a common cylinder block, the supply lines and hydraulic lines for the press cylinders being integrated into the cylinder block.
  • the DE 10 2010 003368 A1 shows a press for pressing pressed material according to the preamble of claim 1.
  • the invention is based on the object of creating a press of the type described above which, with a simple structure, enables particularly variable operation.
  • the invention teaches, in a generic press of the type described above, that the press cylinders, which are preferably arranged in a matrix in a large number of rows, are each equipped with at least one control valve of their own (physically arranged directly on the cylinder), with these control valves are particularly preferably designed as proportional valves.
  • each press cylinder is assigned at least its own control valve, also spatially, that is, the press cylinder itself is directly equipped with the control valve assigned to it.
  • This can e.g. B. realized in that the control valves are each attached directly to the press cylinder, z. B. are screwed. It can be attached directly to the cylinder housing of the press cylinder, so that the control valve is flanged to the cylinder housing.
  • the invention basically includes embodiments in which the press cylinders are designed as single-acting plunger cylinders, so that then usually each press cylinder is assigned a single control valve.
  • the retraction cylinders that may then be provided, in which case the plunger cylinders on the one hand and the retraction cylinders on the other hand can also be arranged in a matrix and connected to one of the press plates.
  • the invention particularly preferably relates to embodiments in which the press cylinders are designed as double-acting differential cylinders with which both compressive forces and tensile forces can be transmitted to the respective press plate.
  • double-acting differential cylinders it can be expedient to provide two control valves on each press cylinder, one for the working high pressure and one for the counter-high pressure.
  • a differential cylinder can also be operated with just one control valve.
  • the invention is characterized by an extremely variable individual cylinder control, so that the hardware-based connection of individual pressure zones, which is necessary in the prior art, is no longer necessary.
  • the interconnection or interconnection logic is electrically set in a fully variable manner using a computer, that is to say that each individual cylinder can be controlled and set in a fully variable manner with the aid of a computer using an electric matrix, as it were.
  • the control valves distributed in the press for setting variable pressure distributions and pressure profiles can be controlled individually or in any groups with a computer, which forms an electrical matrix, so to speak.
  • the computer then only has to be electrically or electronically connected to all the valves, either by wire or also wirelessly.
  • a continuously operating press is shown, the z. B. can be used for the production of wood-based panels.
  • a pressed material mat e.g. B. a pressing material mat made from glued grit is continuously pressed using pressure and heat to form a plate or a plate-shaped strand.
  • the continuous press has an upper heated press platen 1 in the upper part of the press and a lower heated press platen 2 in the lower part of the press. Furthermore, in the upper part of the press and in the lower part of the press, endlessly circulating press belts, e.g. B. steel strips are provided, the interposition of endlessly revolving rolling element assemblies, z. B. roll bars on the press plates 1, 2 are supported.
  • endlessly circulating press belts e.g. B. steel strips
  • the press has a press frame 3 which, in the exemplary embodiment, has an upper beam 4 and a lower beam 5 as well as a press frame 6 arranged between the upper beam and the lower beam.
  • a press frame 3 which, in the exemplary embodiment, has an upper beam 4 and a lower beam 5 as well as a press frame 6 arranged between the upper beam and the lower beam.
  • press frame 6 it can be seen, for example, that a large number of press frames 6 arranged one behind the other in the longitudinal direction of the press are provided.
  • the presses shown are designed as an example of an upper piston press, that is, a plurality of press cylinders 7 are connected to the upper press plates 1, each of which is attached to the press frame, e.g. B. on the press frame 6 are supported.
  • the lower press platen 2 is attached to the press frame with a defined contour.
  • the press plates 1, 2 are formed on the one hand by main press plates in the main pressing area and on the other hand by inlet plates in the inlet area.
  • the press cylinders 7 already mentioned are connected both to the inlet plates and to the main press plates.
  • a variable infeed contour is set in the infeed area of the press via the elastic infeed plates.
  • the press cylinders are arranged in a matrix-like manner in several rows one behind the other, with each row of cylinders having several press cylinders, e.g. B. 3 to 6 press cylinders, preferably 4 or 5 press cylinders.
  • Figure 2a , b shows an example opposite 1 modified embodiment, in which the division into inlet plates on the one hand and main press plates on the other hand is dispensed with.
  • both the upper press plate 1 and the lower press plate 2 are formed over the entire length with a substantially constant thickness and are particularly preferably formed over the entire length as flexible and consequently flexible press plates 1, 2, so that over the length of the press a particularly flexible adjustment of the press gap is possible.
  • press frames 6 with an identical frame thickness are provided over the entire length of the press.
  • the required rigidity for serving different pressure zones is realized by narrower or wider frame spacings and also by the use of single frames or multiple frames on the other hand.
  • press cylinders 7 of identical design and dimensions are used over the entire press length and consequently both in the compression area and in the main press area. This also increases the variety of parts in the in Figure 2a , b embodiment shown reduced.
  • the press cylinders 7 are designed as double-acting differential cylinders with which to set any continuous bending lines both compressive forces and tensile forces on the respective press plates, z. B. the upper press platen 1 can be used up.
  • pressure distribution plates 8 are provided in the rear section of the press.
  • the press cylinders 7 of the press itself are each equipped with at least one control valve 9 of their own, with the control valves 9 being designed as proportional valves.
  • control valves 9 are fastened directly to the respective press cylinder 7, e.g. B. are flanged or screwed to the cylinder housing.
  • the press is characterized by a very variable individual cylinder control.
  • the interconnection logic is no longer produced by hardware-based predetermined control blocks, but exclusively electrically and consequently exclusively via a computer that forms a completely variable electrical matrix for setting any interconnection logic.
  • the computer itself is not shown in the figures, but it only has to be connected to the valves 9 electrically or in terms of communication technology.
  • a separate low-pressure control branch of the hydraulic system for controlling the valves can consequently be dispensed with. It is only necessary to connect all the control valves 9 to the other components of the hydraulic system, in particular the pumps and the accumulator, via corresponding hydraulic lines. Details are not shown.
  • the figures merely show embodiments of a continuously operating press, which are particularly preferably covered by the invention.
  • the invention also relates to cycle presses, which also have an upper press platen and a lower press platen and a large number of press cylinders arranged in rows.
  • these can be single-daylight presses or multi-daylight presses for the production of wood-based panels or laminate panels and, among other things, also short-cycle presses in which stacked pressed material is pressed to form a laminate panel.
  • the invention also includes embodiments for Production of fiber composite materials, the z. B. in vehicle construction and aircraft construction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press Drives And Press Lines (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Control Of Presses (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Claims (6)

  1. Presse pour compresser de la matière à presser,
    avec un bâti de presse (3), un plateau de presse supérieur (1) dans la partie supérieure de presse et un plateau de presse inférieur (2) dans la partie inférieure de presse,
    sachant que le plateau de presse supérieur (1) et/ou le plateau de presse inférieur (2) est sollicité par une pluralité de vérins de pressage (7) disposés en plusieurs rangées et
    sachant qu'une pluralité de vannes de commande (9) reliées aux vérins de pressage (7) est prévue,
    caractérisé en ce que les vérins de pressage (7) sont équipés respectivement d'au moins une vanne de commande (9) propre, disposée du point de vue espace directement sur le vérin de pressage.
  2. Presse selon la revendication 1, caractérisé en ce que les vannes de commande (9) sont constituées sous la forme de vannes proportionnelles.
  3. Presse selon la revendication 1 ou 2, caractérisé en ce que les vannes de commande (9) sont fixées, par ex., vissées, directement sur le vérin de pressage respectif (7), par ex. sur son boîtier de vérin.
  4. Presse selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les vannes de commande (9) réparties dans la presse peuvent être actionnées individuellement ou également en n'importe quels groupes pour le réglage avec un ordinateur des répartitions de pression et profils de pression variables.
  5. Presse selon l'une quelconque des revendications 1 à 4 dans la forme d'exécution d'une presse continue pour compresser des nattes de matière à presser, en particulier au cours de la fabrication de panneaux à base de dérivés du bois ou de panneaux de matières identiques,
    avec un plateau de presse supérieur chauffable (1) dans la partie supérieure de presse et un plateau de presse inférieur chauffable (2) dans la partie inférieure de presse,
    avec des bandes de pressage circulant en continu dans la partie supérieure de presse et la partie inférieure de presse, qui sont supportées sur les plateaux de presse (1, 2) en intercalant des groupes de corps de roulement.
  6. Procédé destiné à faire fonctionner une presse selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les vérins de pressage sont actionnés individuellement ou d'une façon variable en n'importe quels groupes par un ordinateur relié aux vannes de commande.
EP18160229.3A 2017-05-18 2018-03-06 Presse et procede de fonctionnement d'une presse Active EP3415304B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017110882.3A DE102017110882B4 (de) 2017-05-18 2017-05-18 Presse

Publications (2)

Publication Number Publication Date
EP3415304A1 EP3415304A1 (fr) 2018-12-19
EP3415304B1 true EP3415304B1 (fr) 2023-07-12

Family

ID=61581000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18160229.3A Active EP3415304B1 (fr) 2017-05-18 2018-03-06 Presse et procede de fonctionnement d'une presse

Country Status (3)

Country Link
EP (1) EP3415304B1 (fr)
CN (1) CN108943319A (fr)
DE (1) DE102017110882B4 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008061835B3 (de) * 2008-12-11 2009-12-03 Kraussmaffei Technologies Gmbh Doppelbandpresse

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163699B (en) * 1984-08-31 1988-04-13 Bobst Sa Press device and method
GB2230385B (en) * 1989-04-08 1993-10-13 Festo Kg A control device
DE3914105A1 (de) 1989-04-28 1990-10-31 Siempelkamp Gmbh & Co Pressanlage zum kontinuierlichen pressen von pressgutbahnen
DE4342279C2 (de) 1993-12-11 2002-04-18 Siempelkamp Gmbh & Co Kg G Kontinuierliche Presse für die Herstellung von Spanplatten, Faserplatten, Laminatplatten und ähnlichen Preßgutplatten
JP3092460B2 (ja) * 1994-09-14 2000-09-25 株式会社日立製作所 幅圧縮加工機及び圧延機
DE19828822C1 (de) 1998-06-27 1999-09-30 Siempelkamp Gmbh & Co Presse, insbesondere kontinuierliche Presse
DE102010003368A1 (de) * 2010-03-26 2011-09-29 Dieffenbacher Gmbh + Co. Kg Verfahren zur Herstellung von Werkstoffplatten in einer kontinuierlich arbeitende Presse und eine kontinuierlich arbeitende Presse
EP2527134B1 (fr) * 2011-05-27 2015-10-21 Siempelkamp Maschinen- und Anlagenbau GmbH Presse cadencée
DE102012102594B4 (de) * 2012-03-26 2014-05-08 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Verfahren zum Herstellen von Formteilen aus Kunststoff
CN203900181U (zh) * 2014-05-23 2014-10-29 兰州兰石集团有限公司 四辊卷板机下辊、侧辊同步升降控制系统

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008061835B3 (de) * 2008-12-11 2009-12-03 Kraussmaffei Technologies Gmbh Doppelbandpresse

Also Published As

Publication number Publication date
CN108943319A (zh) 2018-12-07
DE102017110882A1 (de) 2018-11-22
DE102017110882B4 (de) 2019-10-31
EP3415304A1 (fr) 2018-12-19

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