EP1340611A2 - Plattenpresse mit Heiz- und Kühlsystem - Google Patents
Plattenpresse mit Heiz- und Kühlsystem Download PDFInfo
- Publication number
- EP1340611A2 EP1340611A2 EP03004189A EP03004189A EP1340611A2 EP 1340611 A2 EP1340611 A2 EP 1340611A2 EP 03004189 A EP03004189 A EP 03004189A EP 03004189 A EP03004189 A EP 03004189A EP 1340611 A2 EP1340611 A2 EP 1340611A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- channels
- press
- product
- press 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.)
- Withdrawn
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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
Definitions
- the invention relates to a plate press for the production of top and / or bottom plate-shaped coated with tempering foils or veneers Products, especially chipboard, plywood or fiberboard, by means of collapsible heatable and coolable press plates, the inner channels for Have passage of a heating or cooling liquid.
- the individual layers are thermally bonded reactive adhesive used. That's why you need heated press plates, the required process heat in the shortest possible time and with sufficient uniform temperature and pressure distribution over the product.
- the press plates are on the product facing side usually still equipped with a press pad and on this Press pad then lies the press plate coming into contact with the product.
- the press plates are generally very large, namely a few meters long and wide. Therefore, there are several stamps arranged side by side necessary to achieve the required contact pressure between the press plate and the product to create. For the same reason, the press plates have to be very solid be carried out, for example with a thickness of 12 cm to 20 cm, so they do not deform during the pressing process, but rather if possible the entire surface of the press plate the same pressure on the product produce.
- a plate press with the features of the preamble of claim 1 has become known from EP 864 414.
- Each press plate consists of a relatively thin, flexible front panel, which is crossed by heating channels and from a rear, thick-walled solid plate, which by cooling channels is crossed.
- the present invention has for its object the pressure distribution along the product surface, but also the constant temperature in to improve the product-related areas of the press plates. This improvement should also be used especially in non-stationary operation, i.e. during production interruptions, Malfunctions and when restarting the plate press come to fruition.
- the invention is based on the following knowledge: Depending on the heat transfer coefficient between the press plate and the product, including press pads and press plates to be taken into account must be transferred to the product Amount of heat a temperature gradient between heating fluid and Product surface of the order of 50 ° is made available, about half of this temperature gradient in the area of the press plate lies.
- the invention proposes that the Channels for the heating and cooling liquid arranged in one and the same press plate are that these channels can either be connected to one of the mixing valves Heating circuit and can be connected to a cooling circuit and that the Cooling circuit has its own cooling unit.
- the term "one and same press plate” mean that the channels are not as in the known case are thermally separated from each other by an intermediate insulation, but the press plate can be constructed in several layers.
- this system allows separate channels for the Heating and cooling liquids are available in the press plate, an essential more precise temperature control on the side of the press plate away from the product:
- the temperature can be set there to an average value of approximately corresponds to the temperature profile of the press plate on the product side. This has As a result, the press plate is seen on the product over the cycle time side facing the same temperature as on the side facing away from the product Page. Warping of the press plate due to temperature differences between the top and bottom are excluded. This results a much more even pressure distribution on the product surface.
- the mixing valves it is recommended that they be used for the channels arranged on the product side are arranged on their input side. It is advisable to use reusable valves, so immediately if necessary warmer or cooler heat transfer fluid can be added.
- the arrangement of multi-way valves offers Output of the heating plates the advantage that a decision is made early, which part of the return flow to the cooling circuit and which part to the heating circuit should be fed.
- the control of the mixing valves is preferably carried out via sensors, the one Detect deformation in the sense of a curvature of the press plate, this Deformation is minimized by a regulator.
- the regulator control the mixing valves is connected to a program control that is in the event of business interruptions the press immediately lowers the temperature of the liquid in the channels, so that the overheating described at the outset is excluded from the outset is.
- the process according to the invention is essentially characterized in that that through targeted temperature control in the heating and / or cooling circuit undesired heating of the press plate on the product facing Side is excluded by the fact that the channels via mixing valves optional connected to both a heating circuit and a cooling circuit can be.
- the two-channel version of the press plates also in that the temperature gradient between the product side and the opposite side of each heating plate by appropriate temperature control in the heating circuit and in the cooling circuit is minimized, so that no deformation the plate can occur in the sense of a curvature thereof.
- FIG. 1 a section of a plate press consisting of at least one upright press frame 1, which is a lower press plate 2 with a lower press pad 3 and lower press plate lying on it 4 carries.
- Product 5 in the form of a package of several layers of one arranged on both sides, loading system 6 known per se onto the lower press plate 4 discarded.
- the upper press plate 7 is mounted on several hydraulic rams 10 and 11, who are responsible for the actual pressing process.
- Flow channels 12 are located inside the two press plates 2 and 7 or 13a and 13b, which with heating or cooling liquid, generally with heat transfer oil, be loaded.
- the flow channels run in a meandering shape over almost the entire length and width of the two press plates, being in the case there is only one continuous flow channel 12 in the lower press plate, in If the upper press plate 7 has two separate flow channels, a lower flow channel 13 and an upper flow channel 13a.
- the same duct system will usually be provided for both press plates, So either both plates in the single channel system or both plates in the Two-channel system.
- the flow channels not to be arranged directly in the press plates, but in heating plates that then in turn on the side facing the product on the press plates are mounted.
- heating or pressing plates in multiple layers, in particular to form the flow channels through intermediate layers. Is essential but with the two-channel version, as shown on the upper press plate 7 it is shown that there are no insulating layers between the channels 13 and 13a are arranged.
- the flow channels usually have a large number of branches connected in parallel, to achieve an even temperature distribution.
- the two press plates 2 and 7 each have displacement sensors 32a, 32b or 33a and 33b correspond.
- These displacement sensors the task of a possible deformation of the plate in the sense of a curvature to capture. They can be placed around the outer edges of the plates to measure a defined edge position, which is then compared with a target value at a plate position where the pressing process is not yet taking place, preferably with the press fully open.
- the lines 14 and 15 each connected to a pump 16 or 17, each of a three-way mixing valve 18 or 19 is connected upstream.
- These mixing valves are in turn over Lines 20 and 21 to the flow of the heating circuit and via lines 22 or 23 to the return of the press plates 2 or 7, but also to the Flow of the cooling circuit shown on the right is connected.
- the cooling circuit consists of two coolers 24 and 25, but also in one Unit can be summarized. It is useful around tube heat exchangers, which, as indicated, are cooled by cold water become. Of course, other cooling units can also be used become.
- the coolers are connected to a three-way mixing valve via pumps 26 and 27, respectively 28 or 29 connected that in the return of the press or Heating plate 7 or 2 is installed.
- the flow diagram described allows the two pressing or heating plates 2 and 7 optionally depending on the position of the mixing valves 18, 19, 28, 29 with liquids to apply very different temperatures, for example to Rapid start-up through liquid only from the heating circuit the lines 20 and 21, during normal operation mainly through the Return liquid in lines 22 and 23 with little admixture of Liquid from lines 20 and 21, however, in the event of business interruptions solely through liquid from the cooling circuit by the entire return from the press plates 2 and 7 by appropriate position of the mixing valves 28 and 29 is passed through the coolers 24 and 25.
- the mixing valves are controlled by measuring the temperature in the flow lines 14 and 15 on the one hand and at representative points T of the press plates 2 and 7 on the other hand. These temperature values are a program-controlled Controllers 30 and 31 supplied, the setting of the four mentioned Mixing valves causes.
- FIG. 3 shows the heating and cooling circuit in the two-channel system. Corresponding to each other Parts are given the same reference numerals as in Figure 2. The main difference is that in the press or Heating plates 2 and 7 separate flow channels are arranged, namely each a flow channel 13 which is close to the product side of the press plate 2 and 7 runs and in each case a flow channel 13a, which is vertically offset on the opposite side, So on the side facing away from the product.
- the product side Flow channel 13 normally more or less to the heating circuit, the flow channel 13a running on the opposite side more or less connected to the cooling circuit. Therefore in the following the Product-side channels as heating channels, the mutual channels as cooling channels referred to, although there are inverse conditions depending on the operating state can.
- the mixing valves 28 and 28a of the press plate 7 are again three-way valves trained and connected to each other so that the channels 13 and 13a can be optionally supplied with heating or cooling liquid. So it is, for example, for rapid heating of the press plates when starting the system possible, the heating fluid supplied by the pump 16 or 17 after flowing through the product side, it must be fed back to the opposite side immediately. Conversely, in the event of a business interruption, it is possible to use both channel levels 13 and 13a with cooling water and thus any heating to prevent.
- the main advantage of the two-channel system is that temperature differences between the product side and the opposite side of the press or heating plate can be excluded because of targeted cooling on the opposite side the same temperature as can be maintained on the product side.
- both heating plates on the product side as well as on the opposite side the temperatures measured as indicated by the symbols T. and fed to the controllers 30 and 31, respectively.
- the heating plates can be curved by sensors - indicated by the symbols S in FIG. 3 - and also the measured value be passed on to the controller 30 or 31, so by appropriate Control mixing valves 16, 17, 28, 28a, 29 and 29a with channels 13 and 13a temperatures such that warping of the press plates due to temperature differences between the product side and the opposite side and changes in contact pressure caused by this are excluded.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Description
Claims (11)
- Plattenpresse zur Herstellung von ober- und/oder unterseitig mit Vergütungsfolien oder Furnieren beschichteten plattenförmigen Produkten mittels zusammenfahrbarer beheizbarer und kühlbarer Pressplatten (2, 7), die innere Kanäle (12, 13, 13a) zur Durchleitung einer Heiz- und/oder Kühlflüssigkeit aufweisen,
dadurch gekennzeichnet, dass die Kanäle (12, 13, 13a) für die Heiz- und/oder Kühlflüssigkeit in ein- und derselben Pressplatte ohne zwischengeschaltete Isolierungslagen angeordnet sind, dass diese Kanäle über Mischventile (16, 17, 28, 28a, 29, 29a) wahlweise sowohl an einen Heizkreislauf als auch an einen Kühlkreislauf anschließbar sind und der Kühlkreislauf ein eigenes Kühlaggregat (24, 25) aufweist. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass getrennte Kanäle (13, 13a) an der produktnahen Seite bzw. der produktabgewandten Seite der Pressplatte (7) angeordnet sind und erstere überwiegend für Heizflüssigkeit, letztere überwiegend für Kühlflüssigkeit bestimmt sind. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass bei getrennten Kanälen (13, 13a) in der Pressplatte (7) diese im Gegenstrom durchströmt werden. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass gemeinsame Kanäle (12) für Heiz- und Kühlflüssigkeit in der Pressplatte (2) angeordnet sind. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass die Mischventile (18, 19) zumindest überwiegend als Dreiwege-Ventile ausgebildet sind. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass die Mischventile (18, 19) für die produktseitig verlaufenden Kanäle (13) eingangsseitig dieser Kanäle angeordnet sind. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass der Rücklauf der produktseitigen Kanäle (13) über Mischventile (28, 29, 28a, 29a), an den Vorlauf der gegenseitigen Kanäle (13a) anschließbar ist. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass die Steuerung der Mischventile (18, 19, 28, 28a, 29, 29a) über Sensoren erfolgt, die die Verformung der zugeordneten Pressplatte (2, 7) direkt oder indirekt erfassen und dass diese Verformung durch einen Regler (30, 31) minimiert wird. - Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet, dass der Regler (30, 31) an eine Programmsteuerung angeschlossen ist, die bei Betriebsunterbrechungen der Presse Kühlmittel in die Kanäle (12, 13 oder 13a) leitet. - Verfahren zur Beschichtung von plattenförmigen Produkten mit oberund/oder unterseitig angeordneten Vergütungsfolien oder Furnieren mittels zusammenfahrbarer, beheizbarer und kühlbarer Pressplatten (2, 7), die innere Kanäle (12, 13, 13a) zur Durchleitung einer Heiz- und/oder Kühlflüssigkeit aufweisen,
dadurch gekennzeichnet, dass durch Temperaturregelung der Heiz- und/oder Kühlflüssigkeit die produktabgewandte Seite der Pressplatte (7) zumindest annähernd auf dergleichen Temperatur gehalten wird, wie die produktnahe Seite der Pressplatte (7). - Verfahren nach Anspruch 10,
dadurch gekennzeichnet, dass die Temperaturregelung an der produktnahen Seite bzw. der produktabgewandten Seite der Pressplatte (7) über Sensoren erfolgt, die die Verformung der zugeordneten Pressplatte (2, 7) direkt oder indirekt erfassen und dass diese Verformung durch einen an den Heiz- und/oder Kühlkreislauf angeschlossenen Regler (30, 31) minimiert wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10208659 | 2002-02-28 | ||
DE2002108659 DE10208659A1 (de) | 2002-02-28 | 2002-02-28 | Plattenpresse mit Heiz- und Kühlsystem |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1340611A2 true EP1340611A2 (de) | 2003-09-03 |
EP1340611A3 EP1340611A3 (de) | 2005-02-09 |
Family
ID=27675105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03004189A Withdrawn EP1340611A3 (de) | 2002-02-28 | 2003-02-27 | Plattenpresse mit Heiz- und Kühlsystem |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1340611A3 (de) |
DE (1) | DE10208659A1 (de) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1683648A2 (de) | 2004-12-24 | 2006-07-26 | Mgi France | Process and press for laminating substrates printed with toner |
EP2106891A1 (de) | 2008-04-04 | 2009-10-07 | komax Holding AG | Heizplatte für Werkstücke |
CN101570031B (zh) * | 2009-05-29 | 2011-12-28 | 周发荣 | 木地板炭化加工方法 |
CN101670606B (zh) * | 2008-09-08 | 2012-09-12 | 富朗投资管理集团(香港)有限公司 | 一种利用农作物秸秆制作板材的热压系统 |
CN103341901A (zh) * | 2013-07-11 | 2013-10-09 | 福建农林大学 | 一种人造板热压快速恒温控制装置及方法 |
CN103419266A (zh) * | 2013-08-29 | 2013-12-04 | 昆山硕华模具板有限公司 | 一种带有热补偿板的热压板 |
CN104985669A (zh) * | 2015-07-30 | 2015-10-21 | 江苏锐升新材料有限公司 | 一种用于地板加工的冷却铺机 |
DE102014115465A1 (de) * | 2014-10-23 | 2016-04-28 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Pressenplatte und Verfahren zur Einstellung der Verbiegung einer Pressenplatte |
WO2017168022A1 (es) * | 2016-03-30 | 2017-10-05 | Biele, S.A. | Dispositivo refrigerador de piezas planas y método de refrigeración de piezas planas |
DE102017102940A1 (de) | 2017-02-14 | 2018-08-16 | Bundesdruckerei Gmbh | Verfahren und Vorrichtung zum Laminieren von mehreren in einem Stapel angeordneten Schichten zu einem Laminatverbund |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005011739B4 (de) * | 2005-03-11 | 2010-10-21 | Fogra Forschungsgesellschaft Druck E.V. | Verfahren zur Bestimmung bzw. Überprüfung der Durchhärtung eines mit Druckfarbe bedruckten Objektes, Prüfvorrichtung, deren Verwendung und Prüfanordnung |
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DE1627876A1 (de) * | 1968-01-27 | 1970-10-22 | Eugen Siempelkamp | Hydraulische Presse |
DE10026764A1 (de) * | 2000-05-30 | 2001-12-06 | Dieffenbacher Gmbh Maschf | Verfahren zur Kurztaktpresse zum Verleimen von geschichtetem Preßgut |
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DE2808139A1 (de) * | 1978-02-25 | 1979-08-30 | Heinz Ing Grad Kienle | Verfahren zum temperieren von formen, insbesondere druckgiess-, spritzguss- o.dgl. formen und vorrichtung zur durchfuehrung des verfahrens |
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IT1289997B1 (it) * | 1997-02-28 | 1998-10-19 | Pagnoni Impianti S P A | Pressa a piani riscaldati con caratteristiche migliorate per la pressatura di pannelli |
JP2000289043A (ja) * | 1999-04-12 | 2000-10-17 | Meiki Co Ltd | プレスの温度制御機構 |
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2002
- 2002-02-28 DE DE2002108659 patent/DE10208659A1/de not_active Withdrawn
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2003
- 2003-02-27 EP EP03004189A patent/EP1340611A3/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1627876A1 (de) * | 1968-01-27 | 1970-10-22 | Eugen Siempelkamp | Hydraulische Presse |
DE10026764A1 (de) * | 2000-05-30 | 2001-12-06 | Dieffenbacher Gmbh Maschf | Verfahren zur Kurztaktpresse zum Verleimen von geschichtetem Preßgut |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1683648A3 (de) * | 2004-12-24 | 2007-02-28 | Mgi France | Verfahren und Presse zum Laminieren von mit Toner bedruckten Substraten |
EP1683648A2 (de) | 2004-12-24 | 2006-07-26 | Mgi France | Process and press for laminating substrates printed with toner |
EP2106891A1 (de) | 2008-04-04 | 2009-10-07 | komax Holding AG | Heizplatte für Werkstücke |
EP2106892A1 (de) | 2008-04-04 | 2009-10-07 | komax Holding AG | Heizplatte für Werkstücke |
US8575524B2 (en) | 2008-04-04 | 2013-11-05 | Komax Holding Ag | Heating plate for workpieces |
CN101670606B (zh) * | 2008-09-08 | 2012-09-12 | 富朗投资管理集团(香港)有限公司 | 一种利用农作物秸秆制作板材的热压系统 |
CN101570031B (zh) * | 2009-05-29 | 2011-12-28 | 周发荣 | 木地板炭化加工方法 |
CN103341901B (zh) * | 2013-07-11 | 2017-11-10 | 福建农林大学 | 一种人造板热压快速恒温控制装置及方法 |
CN103341901A (zh) * | 2013-07-11 | 2013-10-09 | 福建农林大学 | 一种人造板热压快速恒温控制装置及方法 |
CN103419266A (zh) * | 2013-08-29 | 2013-12-04 | 昆山硕华模具板有限公司 | 一种带有热补偿板的热压板 |
DE102014115465A1 (de) * | 2014-10-23 | 2016-04-28 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Pressenplatte und Verfahren zur Einstellung der Verbiegung einer Pressenplatte |
CN104985669B (zh) * | 2015-07-30 | 2017-03-01 | 江苏锐升新材料有限公司 | 一种用于地板加工的冷却铺机 |
CN104985669A (zh) * | 2015-07-30 | 2015-10-21 | 江苏锐升新材料有限公司 | 一种用于地板加工的冷却铺机 |
WO2017168022A1 (es) * | 2016-03-30 | 2017-10-05 | Biele, S.A. | Dispositivo refrigerador de piezas planas y método de refrigeración de piezas planas |
DE102017102940A1 (de) | 2017-02-14 | 2018-08-16 | Bundesdruckerei Gmbh | Verfahren und Vorrichtung zum Laminieren von mehreren in einem Stapel angeordneten Schichten zu einem Laminatverbund |
EP3369569B1 (de) * | 2017-02-14 | 2023-03-22 | Bundesdruckerei GmbH | Verfahren zum laminieren von mehreren in einem stapel angeordneten schichten zu einem laminatverbund |
EP4212339A1 (de) | 2017-02-14 | 2023-07-19 | Bundesdruckerei GmbH | Vorrichtung zum laminieren von mehreren in einem stapel angeordneten schichten zu einem laminatverbund |
Also Published As
Publication number | Publication date |
---|---|
DE10208659A1 (de) | 2003-09-04 |
EP1340611A3 (de) | 2005-02-09 |
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