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EP1620251B1 - Presse comprenant une correction d'une marche de bande de pressage et procede de controle d'une bande de presse - Google Patents

Presse comprenant une correction d'une marche de bande de pressage et procede de controle d'une bande de presse Download PDF

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Publication number
EP1620251B1
EP1620251B1 EP03732392A EP03732392A EP1620251B1 EP 1620251 B1 EP1620251 B1 EP 1620251B1 EP 03732392 A EP03732392 A EP 03732392A EP 03732392 A EP03732392 A EP 03732392A EP 1620251 B1 EP1620251 B1 EP 1620251B1
Authority
EP
European Patent Office
Prior art keywords
press
belt
rotating rods
pressing
course
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
EP03732392A
Other languages
German (de)
English (en)
Other versions
EP1620251A1 (fr
Inventor
Erich Haider
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.)
Lignum Technologies AG
Original Assignee
Kronoplus Technical AG
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 Kronoplus Technical AG filed Critical Kronoplus Technical AG
Publication of EP1620251A1 publication Critical patent/EP1620251A1/fr
Application granted granted Critical
Publication of EP1620251B1 publication Critical patent/EP1620251B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a continuous, in particular a double belt press and a method for controlling the course of the press belt.
  • a double belt press comprises two circulating belts which are pressed against each other.
  • the DE 41 10 678 C1 such as DE 198 24 723 C1 disclose presses of the type according to the invention.
  • the continuous press is used to press glue-provided wood particles, fibers, chips or already pre-pressed fiber mat, in particular with the supply of heat.
  • rolling rods or rollers which exert suitable pressure on the respective press belt in the direction of the material to be pressed.
  • a plurality of rolling rods are arranged parallel to one another and fastened on the right and left on a chain.
  • the two chains are driven by gears.
  • the gears are attached laterally to an insertion or on a Ausblownwelle.
  • the rolling rods with the chains also form a circulating belt.
  • the rolling rods or the band formed thereby is thus on one side of a press belt.
  • the DE 41 10 678 C1 discloses a continuous press with circumferentially driven steel belts, in the actual pressing area, the respective steel strip is guided by means of rolling elements or rolling rods. By varying the pressure exerted by the roll bars on the press belt, the course of the respective steel strip is corrected.
  • German patent application DE 199 31 175 A1 discloses a press for the pressing of a material to be pressed to a component with a rotating pressing belt and control means, with which the course of the press belt is controlled.
  • the control means comprise rolling rods and adjusting means with which the rolling rods can be adjusted obliquely to the transport direction of the press belt.
  • the rolling rods are attached to chains on the side.
  • the object of the invention is to provide a method and a device in which, on the one hand, the press belt of a continuous press maintains the desired course in the press area and, on the other hand, the product quality is not impaired in the aforementioned manner.
  • the object of the invention is achieved by a device having the features of the first claim.
  • a method of solving the problem comprises the features of the independent claim.
  • the rolling rods are merely aligned with respect to their position in the plane which is parallel to the press belt. In the ground state, the rolling rods are aligned in the ideal state perpendicular to the direction of the press belt. If a press belt deviates undesirably from the desired course, then the rolling rods are unscrewed from this vertical position relative to the press belt in such a way that a counteraction is achieved and the press belt returns to the desired course. This ensures that the press belt is returned to the desired position or takes the desired course. It is not necessary to change the pressure exerted by the rolling rods on the press belt. As a result, a consistent product quality is achieved.
  • An apparatus for carrying out the method comprises in an advantageous embodiment measuring devices for detecting the course of the press belt within the pressing area.
  • the device further comprises a control device or control means in order to suitably control the position of the rolling rods in the aforementioned manner as a function of the measured course of the belt.
  • a mechanical sensor is used in particular.
  • this comprises an end with a roller which adjoins the band.
  • the sensor is shifted mechanically as soon as the belt changes position.
  • the mechanical change is registered and fed to the control device.
  • the position of the gears is suitably changed over which the chains out become.
  • the control takes place via typically via servo cylinder with a maximum stroke of preferably at least ⁇ 1 mm. In general, however, is controlled in tenths of a millimeter range to properly correct the band history. A smaller stroke of more than 1/10 millimeter can therefore already be sufficient in principle.
  • the rolling rods are preferably left and right on a chain or are attached to two chains.
  • the chains are driven by gears. There are gears that are responsible for the fact that the rolling rods are adjacent to the respective band. Other gears are provided in a different plane. These gears serve u.a. to tension the chain.
  • the links are due to production or due to material fatigue, undesirably different lengths.
  • individual chain links have been undesirably stretched during operation, for example.
  • Such unwanted stretching leads to a running out of the conveyor belt from the desired target curve to the left or to the right in the manner mentioned above. Differently long chain links thus lead to production disruptions.
  • the position of the insertion shaft determines the position of the rolling rods. So here it is ensured that the rolling rods are perpendicular to the press belt and thus a press belt is initially controlled properly.
  • the material to be pressed is fed into the press much faster, typically at twice the speed, compared to the transport speed of the rolling rods. This can have the consequence that the pressed material reaches an area of the press where the rolling rods are inclined in the aforementioned sense. At that moment, the undesired skew would cause the press belt to deflate the desired intended course.
  • the aforementioned problem occurs only in the case of starting a press cycle.
  • Stretched chain links can be determined directly or indirectly.
  • the length of chain links can also be measured directly. However, this is very expensive, since the measurement must be performed at rest. It depends on differences in the tenth of a millimeter range. Hundredselmillimeter Kunststoffe also play a role. A chain can easily be 100 m long. The metrological effort is therefore very large, to determine the length of each link of the chain by retiming. This procedure is therefore usually not performed. In principle, however, it is also possible to measure directly.
  • Another measuring method is to provide an optical marking or a pulse generator at the input shafts or at the gears, which emits electrical pulses, for example. If both chains have the same length chain links, there is no divergence of the pulse generators or markings relative to each other. These always transmit one pulse to one sensor at a time or two sensors measure the markings at the same time. If there are differences in the chains due to different chain lengths, the sensors register the pulses or markings at different times. From this differences of the links of a chain can be determined, for example calculated. This can be used as input to make the control according to the invention. The control compensates for chain errors, ie different lengths of the chain links. The production can be accelerated compared to the prior art and / or the product quality can be improved.
  • gears are used which serve exclusively for measuring or measuring the chain.
  • These additional gears have pulser or optical markers.
  • the gears are paired in particular inserted one behind the other. These have a very small distance from each other of z. B. 1000 mm.
  • the times of the pulse generators are compared with each other. Resulting deviations provide information about resulting deviations of the intended chain length or chain link length. Furthermore, this directly determines the inclination of the rolling rods in the pressing area. So there are a total of four gears used. Preferably, these are located in the return area in order to influence the actual production process under any circumstances. In fact, information obtained in the press or production sector can be erroneous because the effects of pressure can falsify the result,
  • Cogwheels arranged one behind the other in the direction of travel preferably serve for the exact determination of lengths of the chain links.
  • a laminate floor comprises a plate preferably made of a wood material such. As HDF, MDF or chipboard. Above and below such a truss material papers are attached. On the one hand a decorative paper is provided, which determines the appearance of the floor. On the other hand, a Martinezzugpapier is provided, which prevents the plate warps after pressing. Above the decorative paper is an abrasion-resistant layer to protect the floor against abrasion. Below can still be provided a layer of sound-insulating material.
  • lateral areas of the press belt in the pressing area are braked or accelerated in order to control the course of the press belt.
  • FIG. 1 outlined a continuous press for the production of MDF, HDF or chipboard and the like.
  • Two steel press belts 1 are passed around rollers 2.
  • Rotatably mounted rods 3, called rolling rods, are connected to each other in a band-like manner via chains 4.
  • the chains 4 are driven by gears, not shown.
  • the gears are located at the ends of input shafts 5 and output shafts 6.
  • the band formed from the rolling rods 3 is guided around the aforementioned shafts 5 and 6, and as a rule at a speed significantly lower than the speed with which the press belts 1 are guided around the rollers 2 around. This has the consequence that the rotatably mounted rolling rods rotate.
  • the material to be pressed is transported along the arrow 7 in the press.
  • the pressing then takes place in the area to which the rolling rods border.
  • FIG. 2 shows a plan view of the rolling rods 3. These are arranged perpendicular to the transport direction 7.
  • FIG. 3 is shown in plan the case that a group of rolling rods 3a is not aligned exactly perpendicular to the transport direction due to different lengths of chain links of the chains 4. This oblique position causes an undesirable deviation of the press belt from the desired course, when this obliquely oriented roll bar presses on the press belt to transfer pressure on the pressed material.
  • FIG. 3 Not shown output shaft is temporarily oriented obliquely opposite, so according to FIG. 3 on the right side in the direction of the arrow 8, so as to compensate for the inclination of the rolling rod 3a.
  • two gears 9 are arranged one behind the other and provided with markers or pulse generators 10. Not shown sensors register the markers, for example in the "three o'clock" position shown. As long as the two markers 10 are registered at the same time by the sensors, there are no chain links of different lengths. Only when between the two gears a chain link arrives, which is stretched over the other, for example, the markers are registered at different times. Based on the rotational speed of the gears and the time difference can then be determined the deviation in the length of the chain link. This information is used to control the orientation of the rolling rods.
  • FIG. 5 Based on FIG. 5 is clarified in a plan, as the course of the press belt or deviations from the desired course can be determined.
  • Rotatable wheels 11 are pressed by spring force in the direction of the respective edge of the press belt. You can also go along of the double arrow 12 are moved.
  • a displacement sensor 13 is able to detect this movement along the double arrow 12.
  • the wheels 11 move accordingly along the double arrow 12.
  • the respective displacement sensor 13 detects the change. The change directly reflects the deviation from the target course.
  • the detected change is transmitted to an electronic system. This now controls in response to the inclination of corresponding rolling rods until the desired course is restored.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Control Of Presses (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Claims (6)

  1. Presse pour presser une matière à presser en un composant, laquelle presse comprend au moins une bande de presse rotative (1) ainsi que des moyens de commande qui permettent de commander le parcours de la bande de presse, dans laquelle presse les moyens de commande comportent des barres roulantes (3) ainsi que des moyens de positionnement avec lesquels les barres roulantes peuvent être positionnées obliquement par rapport à la direction de transport (7) de la bande de presse, dans laquelle presse les barres roulantes (3) sont fixées latéralement à des chaînes rotatives (4), caractérisée par des moyens qui commandent la position des barres roulantes en fonction de la longueur de maillons de chaîne individuels de la chaîne (4).
  2. Presse selon une des revendications précédentes, dans laquelle les barres roulantes (3) forment une bande rotative qui est guidée autour d'arbres (5, 6), et dans laquelle sont prévus des moyens de positionnement avec lesquels des arbres (5, 6) peuvent être positionnés obliquement par rapport à la direction de transport (7) de la bande de presse.
  3. Presse selon une des revendications précédentes, dans laquelle deux bandes rotatives (1) sont guidées autour de rouleaux (2) et sont pressées l'une vers l'autre dans une zone située entre les rouleaux (2), à savoir par des barres roulantes (3) montées tournantes.
  4. Presse selon une des revendications précédentes, dans laquelle sont prévus des moyens (11, 13) qui permettent de détecter une déviation de la bande de presse (1) par rapport à un parcours de consigne prédéfini, et une électronique reliée à ceux-ci, qui, lorsque des déviations sont détectées, est capable d'actionner des moyens de positionnement de manière que des barres roulantes (3) soient déviées de leur position perpendiculaire par rapport à la direction de déplacement (7) de la zone adjacente de la bande de presse, de manière à réduire les déviations.
  5. Presse selon la revendication précédente, dans laquelle des roues dentées (9) sont pourvues de marquages ou de générateurs d'impulsions (10), et des capteurs ainsi qu'un dispositif d'évaluation sont disposés de manière que des maillons de chaîne allongés d'une chaîne (4) puissent être détectés.
  6. Procédé pour la commande d'une bande de presse (1) dans une presse selon une des revendications précédentes, dans lequel, dans la zone de pressage, le parcours de la bande de presse est commandé par ralentissement ou accélération latérale de la bande de presse.
EP03732392A 2003-05-02 2003-05-16 Presse comprenant une correction d'une marche de bande de pressage et procede de controle d'une bande de presse Expired - Lifetime EP1620251B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20306758U DE20306758U1 (de) 2003-05-02 2003-05-02 Presse mit Korrektur eines Pressbandverlaufs
PCT/EP2003/005140 WO2004096531A1 (fr) 2003-05-02 2003-05-16 Presse comprenant une correction d'une marche de bande de pressage

Publications (2)

Publication Number Publication Date
EP1620251A1 EP1620251A1 (fr) 2006-02-01
EP1620251B1 true EP1620251B1 (fr) 2012-03-14

Family

ID=32520328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03732392A Expired - Lifetime EP1620251B1 (fr) 2003-05-02 2003-05-16 Presse comprenant une correction d'une marche de bande de pressage et procede de controle d'une bande de presse

Country Status (11)

Country Link
US (1) US7340997B2 (fr)
EP (1) EP1620251B1 (fr)
KR (1) KR20060005377A (fr)
CN (1) CN100469564C (fr)
AT (1) ATE549154T1 (fr)
AU (1) AU2003240256A1 (fr)
CA (1) CA2523202A1 (fr)
DE (1) DE20306758U1 (fr)
PL (1) PL206191B1 (fr)
RU (1) RU2319613C2 (fr)
WO (1) WO2004096531A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005024692A1 (de) * 2005-05-30 2006-12-07 Kaindl Flooring Gmbh Vorrichtung zur Herstellung eines Zwischenprodukts oder des Endprodukts der Fertigung von Platten auf Holzbasis
CN102490245B (zh) * 2011-12-22 2014-01-22 三门峡市易兴人造板设备有限公司 双钢带连续平压机
ES2756337T3 (es) * 2016-10-06 2020-04-27 SWISS KRONO Tec AG Equipo de prensa para placas de compuesto de madera y procedimiento para vigilar un equipo de prensa para placas de compuesto de madera
DE102017119300A1 (de) * 2017-08-23 2019-02-28 Iwis Antriebssysteme Gmbh & Co. Kg Vorrichtung und Verfahren zur Ermittlung des Verschleisszustandes einer Kette
DE102017119301A1 (de) * 2017-08-23 2019-02-28 Iwis Antriebssysteme Gmbh & Co. Kg Vorrichtung und Verfahren zur Ermittlung des Verschleisszustandes einer Kette

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU127576A1 (ru) * 1959-07-13 1959-11-30 Я.Я. Дингелис Конвейерный пресс
US3723230A (en) * 1970-10-12 1973-03-27 Trus Joist Corp Continuous press for pressing gluecoated consolidatable press charges
DE2220553C3 (de) * 1972-04-26 1975-05-22 Bison-Werke Baehre Und Greten Gmbh & Co Kg, 3257 Springe Kontinuierlich arbeitende Presse zum Herstellen von Platten, wie Span-, Faser-Platten o.dgl
ATA321973A (de) * 1972-04-26 1975-09-15 Baehre & Greten Kontinuierlich arbeitende presse zum herstellen von platten, wie span-, faserplatten od.dgl.
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.
SE415159B (sv) * 1975-07-02 1980-09-15 Baehre & Greten Omlenkningsmedel for drivbara endlosa stalband, vilka er anordnade i kontinuerligt arbetande pressar for framstellning av span- och/eller fiberplattor
US4629061A (en) * 1983-10-11 1986-12-16 Rexnord Inc. Belt steering control system
DE4110678C2 (de) 1991-04-03 1998-09-17 Siempelkamp Gmbh & Co Verfahren zum Betrieb einer Durchlaufpresse im Zuge der Herstellung von Spanplatten, Faserplatten, Laminatplatten u. dgl. sowie für das Verfahren eingerichtete Durchlaufpresse
DE4128024A1 (de) * 1991-08-23 1993-02-25 Held Kurt Kontinuierlich arbeitende doppelbandpresse
CN1074651A (zh) * 1992-01-25 1993-07-28 库特·海尔德 连续加工双带挤压机
US5431273A (en) * 1994-02-24 1995-07-11 Sunkist Growers, Inc. Apparatus and method for detecting a missing ejector in a sorting and conveying system
DE4409702A1 (de) * 1994-03-22 1995-09-28 Hymmen Theodor Gmbh Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke, wie Holzwerkstoffplatten, Gummi-, Kunststoffbahnen o. dgl.
DE19824723C1 (de) 1998-06-03 2000-04-27 Siempelkamp Gmbh & Co Verfahren und kontinuierliche Presse zum Einstellen der Einlaufkontur des Einlaufmauls der Presse
DE19828823C1 (de) 1998-06-27 1999-08-12 Siempelkamp Gmbh & Co Kontinuierliche Presse
DE19828822C1 (de) * 1998-06-27 1999-09-30 Siempelkamp Gmbh & Co Presse, insbesondere kontinuierliche Presse
DE19931175A1 (de) * 1999-07-06 2001-01-11 Dieffenbacher Gmbh Maschf Verfahren und kontinuierlich arbeitende Presse zur Stahlbandführung in einer kontinuierlich arbeitenden Presse
DE10214322B4 (de) * 2002-03-28 2016-07-14 Siempelkamp Maschinen- Und Anlagenbau Gmbh Kontinuierliche Presse zum Verpressen von Pressgutmatten zu Pressgutplatten

Also Published As

Publication number Publication date
RU2319613C2 (ru) 2008-03-20
US20060246168A1 (en) 2006-11-02
EP1620251A1 (fr) 2006-02-01
US7340997B2 (en) 2008-03-11
WO2004096531A1 (fr) 2004-11-11
AU2003240256A1 (en) 2004-11-23
CA2523202A1 (fr) 2004-11-11
CN100469564C (zh) 2009-03-18
PL206191B1 (pl) 2010-07-30
ATE549154T1 (de) 2012-03-15
KR20060005377A (ko) 2006-01-17
CN1771120A (zh) 2006-05-10
DE20306758U1 (de) 2004-06-09
RU2005132398A (ru) 2006-08-27
PL377930A1 (pl) 2006-02-20

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