WO2016034688A1 - Presse travaillant en continu et procédé de fonctionnement de telles presses - Google Patents

Presse travaillant en continu et procédé de fonctionnement de telles presses Download PDF

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Publication number
WO2016034688A1
WO2016034688A1 PCT/EP2015/070189 EP2015070189W WO2016034688A1 WO 2016034688 A1 WO2016034688 A1 WO 2016034688A1 EP 2015070189 W EP2015070189 W EP 2015070189W WO 2016034688 A1 WO2016034688 A1 WO 2016034688A1
Authority
WO
WIPO (PCT)
Prior art keywords
press
guide rails
restoring forces
rolling bodies
rolling
Prior art date
Application number
PCT/EP2015/070189
Other languages
German (de)
English (en)
Inventor
Gernot Von Haas
Detlef Kroll
Original Assignee
Dieffenbacher GmbH Maschinen- und Anlagenbau
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 Dieffenbacher GmbH Maschinen- und Anlagenbau filed Critical Dieffenbacher GmbH Maschinen- und Anlagenbau
Publication of WO2016034688A1 publication Critical patent/WO2016034688A1/fr

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Classifications

    • 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
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/48—Endless belts
    • B29C2043/483—Endless belts cooperating with a second endless belt, i.e. double band presses

Definitions

  • the present invention relates to a continuously operating press according to the preamble of claim 1 and a method for operating such a press according to the preamble of claim 9.
  • Such presses include a lower press table with a lower press plate and an upper press bear with an upper press plate. Furthermore, such presses from the pressure-transmitting and the material to be pressed through the press pulling, flexible, endless belts, which are guided by drive drums and idler pulleys around the press table or Pressbär, wherein the pressing pressure on the tapes guided over with their axes transverse to the strip running direction Rolling body is supported by press table and Pressbär, wherein the rolling bodies are aligned in the inlet in the pressing region and clamped between the band and the Pressloomplatte by the pressure on the pressed material mat and quasi forcibly guided. Only when leaving the pressed material from the press nip, the clamping is released and the rolling elements are in turn freely movable and lose their orientation, the rolling elements are aligned in the press enema again.
  • DE 44 46 091 A1 and DE 195 18 879 A1 disclose continuously operating presses and processes for the production of material plates in continuously operating presses, in which the pressure exerted on the material to be pressed during pressing can be varied in order to improve the quality of the plate.
  • DE 195 18 879 A1 for example, the pressure on the material to be compacted after a high-pressure region at the beginning of the pressing section is reduced to a minimum pressure in the further course, but the material to be compacted is not completely relieved.
  • the pressed material is again loaded with a medium pressure.
  • the course of the pressure or the force on the pressed material over the pressing section is defined as a pressing profile.
  • the minimum pressure is given by the prior art, characterized in that the rolling elements between steel strip and abutment experience a sufficient clamping. No or insufficient clamping usually has a running of the rolling body result, which could lead to damage in the press in a subsequent pressurization during compression of the material to be pressed.
  • the pressed material thus can not be completely relieved during the compression along the pressing section and then pressurized again, since the rolling elements lose their clamping and thus run with complete relief by the lack of pressure on the pressed material could.
  • the running of the rolling elements can be brought about in the absence of clamping even by the smallest irregularities such as regulatory peaks or density variations in the pressed material. In extreme cases, this could lead to adjacent rolling elements running into one another and thereby causing damage to the press itself, which in turn can be associated with long downtimes and repair work.
  • the present invention therefore provides the technical task of providing a continuously operating press and a method by means of which a running of the rolling elements can be prevented during insufficient, incomplete or partial clamping of the rolling body during the pressing of the pressed material along the pressing section.
  • the task for a continuously operating press is achieved by arranging means for introducing axial restoring forces directly into the rolling elements between the rolling element and the guide chain in the case of an axial deviation of the rolling elements from a predetermined ideal range.
  • the means for introducing the axial restoring forces along the press nip are arranged once, several times or continuously along the press line.
  • a continuous arrangement of the means for introducing the axial restoring forces along the press section may be preferred, as a running of the rolling elements over the entire press section can thus be prevented.
  • preference can be given to variably influencing different press profiles and these means can be engaged as required, if necessary.
  • guide rails are arranged as means for introducing the axial restoring forces.
  • the guide rails can be arranged depending on the pressing profile such that the restoring forces act on the rolling bodies in the upper circulation of the rolling bodies around the press bear and / or in the lower circulation of the rolling bodies around the press table.
  • the guide rails can be designed linear or curved and / or one or more parts.
  • the design of the guide rails can depend on the positioning along the press line or the press profile.
  • the guide rails can preferably be arranged displaceably along the press section.
  • adjusting means for pivoting and / or adjusting and / or bending the guide rails can be arranged from a first position to a second position.
  • the guide rails can be moved horizontally and / or vertically from the first position to the second position.
  • the first position corresponds to a waiting position, which is taken by the guide rails with complete clamping of the rolling rods.
  • the guide rails are then spent when axially acting restoring forces are to be introduced into the rolling body.
  • the guide rails are again moved to the first position.
  • a further embodiment provides that hydraulic, electrical and / or mechanical actuators are arranged as adjusting means.
  • the respective guide rail can have its own actuator.
  • the guide rails can be spent so targeted along the press line in the second position.
  • the actuator may be, for example, a spring or a pressure cylinder.
  • a plurality of adjusting means are arranged on a guide rail.
  • the guide rails are resiliently mounted resiliently.
  • a resilient, resilient bearing protects both the guide rails and the rolling elements from damage that could result from permanent contact. Due to the yielding resilient mounting of the guide rails, the restoring forces can also be metered in, in particular as a function of the running of the rolling bodies.
  • a sensor for determining the pressure acting on the rolling body pressure and / or a unit for detecting the movement of the rolling body is arranged on the press and that the sensor or the unit for detecting the course via a control or regulating unit with the guide rails are operatively connected.
  • the object of the method for operating a continuously operating press is achieved in that with an accompanying axial deviation of the rolling bodies from a predetermined ideal range by means of at least one arranged between the rolling body and the guide means axially acting restoring forces are introduced into the rolling body.
  • the initiation of the axially acting restoring forces can be carried out, in particular during application of a minimum pressing pressure, a relief of the material to be pressed or during an idling of the press.
  • guide rails be used as means for introducing the axial restoring forces.
  • linear or curved guide rails can be used as a means for introducing the axial restoring forces.
  • the design of the guide rails may depend on the location of attachment along the press line and / or the possible mounting options. The guide rail should not affect the pressing of the pressed material mat in the waiting position.
  • multi-part and / or a plurality of guide rails along the press section can be used to initiate axial restoring forces.
  • the guide rails can be arranged such that restoring forces are introduced into the rolling bodies between Pressbär and upper belt and / or in the rolling bodies between the press table and lower belt.
  • the guide rails can be pivoted, adjusted or bent by means of suitable adjusting means for the introduction of axial restoring forces.
  • suitable adjusting means may be springs or impression cylinders. In the case of several guide rails, these can each be brought into the desired position individually by means of suitable adjusting means.
  • the guide rails at the upper circulation of the rolling elements and / or at the lower circulation of the rolling elements are individually controlled.
  • the actuating means can be operated hydraulically, electrically and / or mechanically to initiate axial restoring forces.
  • the restoring forces can be greater the more the ideal range is left, in particular in that the guide rails are resiliently mounted.
  • the ideal range is defined as the range in which the rolling elements can be arranged without causing any damage to the press or the pressed material.
  • a sensor for determining the pressure exerted on the rolling body pressure can be used by means of which early insufficient, incomplete or partial clamping of the rolling bodies are detected and the means for introducing axial restoring forces can be spent in the appropriate position.
  • a gradient recognition can be used, by means of which it can be detected whether a run out of the ideal range threatens or has already occurred for one or more rolling bodies.
  • the course recognition and / or the sensor for determining the pressure can in particular be operatively connected to a control or regulating unit which brings the guide rails into the waiting position or into the second position for the introduction of restoring forces.
  • the control or regulation unit can also initiate the default forces automatically, in particular when the press is idling.
  • the method and the device can be operated independently of one another; However, the device can also be used in particular for carrying out the method.
  • FIG. 1 shows a continuously operating press in a schematic representation
  • FIG. 2 shows the guidance of the rolling bodies in cross section
  • 3 shows the rolling elements with complete clamping and the guide rails in a first position
  • FIG. 4 shows the rolling elements in the case of insufficient or partial clamping with the guide rails in a second position on the ideal region of the rolling bodies
  • FIG. 5 shows the introduction of a restoring force acting on the rolling body during the course of rolling of the ideal area.
  • a continuously operating press 1 is shown schematically.
  • the pressed material 2 which is previously scattered by means of a forming station on a forming belt and possibly precompressed in a pre-press or preheated (not shown) is in the press nip 19 between two belts 17, 18 in the production direction 9 via the press line 21 to a material plate or matte, for example, a chipboard, fiber or insulation board, pressed.
  • the bands 17, 18 are supported relative to the lower pressing / heating plate 3 of the press table 5 and the upper press / heating plate 4 of the press bear 6 by means of rolling elements 10.
  • the rolling elements 10 can be completely clamped between the pressing / heating plate 3, 4 and the belt 17, 18 during the pressing of the pressed material 2 along the pressing section 21, so that they can not run.
  • the rolling elements 10 are guided via a return back to the press inlet, where the rolling elements 10 can be aligned again for the passage of the press line 21, if necessary.
  • the belts 17, 18 are guided over deflection drums 8 and driven by drive drums 7.
  • the actuators 15 in the inlet region of the continuously operating press 1 the compression speed is regulated depending on the nature of the pressed material 2.
  • means for axially introducing restoring forces 22, wherein the means can be formed as guide rails 12, are arranged along the continuously operating press 1. In a first position I, the guide rails 12 are arranged outside the roller body level and have no influence on the compression of the pressed material 2 along the pressing section 21.
  • the guide rails 12 remain in this position I as long as the rolling elements 10 sufficiently between press table 5 and Pressbär 6 and the band 17, 18 are clamped. If relief of the pressed material 2 is provided along the pressing section 21, the guide rails 12 are moved into the position 2 in order to prevent a running of the rolling elements 10, in particular the bleeding from an ideal area 16. For the sake of clarity, in the schematic representation of further detail devices, in particular on further guide rails 12 of the continuously operating press 1 has been omitted.
  • Figure 2 shows in a cross section a portion of the continuously operating press 1.
  • the rolling elements 10 are connected via rods 11, which may be formed as bending rods, movably connected to the guide chains 14 and undergo a clamping between the press table 5 and Pressbär 6 and the band 17, 18 or the pressed material 2.
  • Learn the rolling elements 10 no, a partial or insufficient clamping then guide rails 12 can be moved from a first position I, which corresponds to a waiting or stand-by position, in a second position II and with complete clamping of the rolling elements 10 back to the first position I.
  • the guide rails 12 are in this case arranged between the roller body 10 and the guide chain 14.
  • the first position I of the guide rail 12 can be above and / or below the second position II and the guide rail 12 can be moved vertically and / or horizontally into the second position II.
  • the guide rail 12 may also be arranged above and / or below the rod 11.
  • the first position I, which occupy the guide rails 12 with complete clamping, should be so far outside an ideal range 16, that the guide rails 12 there take no influence on the compression of the pressed material 2.
  • the rolling elements 10 are shown in a plan view with complete clamping, which are axially arranged rods 11 in conjunction with the guide chains 14.
  • the rolling elements 10 are clamped in the ideal region 16 between the band 17,18 and the abutment of the press table 5 or press bear 6 so that they can not break out of the ideal region 16 during the compression of the pressed material 2.
  • the guide rails 12 are arranged at full clamping of the rolling elements 10 in a first position I (waiting position) at a distance 13 from the rolling elements 10.
  • FIG. 4 shows that the rolling elements 10 are no longer sufficiently clamped between the belt 17, 18 and the press table 5 or press beam 6.
  • the guide rails 12 are moved to a second position II, so that the guide rails 12 define at least the ideal region 16 on the right and left.
  • the guide rails 12 can also limit the rolling elements 10 to a region which further delimits the ideal region 16.
  • the first position I shown in dashed lines, shows the position of the guide rails 12 according to FIG. 3.
  • FIG. 5 shows a plan view of how the guide rail 12 exerts a restoring force 22 on the roller 10 after it has run.
  • the limitation of the ideal area 16 by the guide rails 12 prevents the rolling elements 10 from being able to break out of this area.
  • the restoring force 22 acting on the rolling body 10 is also intended to ensure that the rolling bodies 10 are preferably aligned again in the middle of the ideal area 16 and do not take any damage due to a permanent contact with the guide rail:

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

L'invention concerne une presse travaillant en continu pour fabriquer des plateaux ou tapis en matière plastique, comprenant un tapis de corps roulant rotatif sans fin, composé d'une pluralité de corps roulants (10) qui sont disposés axialement par rapport à la direction de la course de la bande et sont reliés à des chaînes de guidage (14) disposées à l'extérieur de la fente de la presse par l'intermédiaire de barreaux (11) disposés axialement. Selon l'invention, lors d'une déviation axiale des corps roulants (10) à partir d'une zone idéale prédéfinie, des moyens destinés à introduire des forces de rappel axiales (22) sont directement disposés dans le corps roulant (10) entre les corps roulants (10) et la chaîne de guidage (14). L'invention concernant le procédé de fonctionnement d'une presse continue consiste en ce que, dans le cas d'une déviation axiale concomitante des corps roulants (10) à partir d'une zone idéale prédéfinie à l'aide d'au moins un moyen disposé entre le corps roulant (10) et la chaîne de guidage (14), des forces de rappel agissant axialement (22) sont introduites dans le corps roulant (10) 7.
PCT/EP2015/070189 2014-09-03 2015-09-03 Presse travaillant en continu et procédé de fonctionnement de telles presses WO2016034688A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014112716.1A DE102014112716A1 (de) 2014-09-03 2014-09-03 Kontinuierlich arbeitende Presse und Verfahren zum Betreiben solcher Pressen
DE102014112716.1 2014-09-03

Publications (1)

Publication Number Publication Date
WO2016034688A1 true WO2016034688A1 (fr) 2016-03-10

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PCT/EP2015/070189 WO2016034688A1 (fr) 2014-09-03 2015-09-03 Presse travaillant en continu et procédé de fonctionnement de telles presses

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DE (1) DE102014112716A1 (fr)
WO (1) WO2016034688A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113474153A (zh) * 2018-11-27 2021-10-01 Azl亚琛有限责任公司 用于挤压加工扁平材料的装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3119529A1 (de) * 1981-05-16 1982-12-02 G. Siempelkamp Gmbh & Co, 4150 Krefeld "vorrichtung zur herstellung von spanplattenbahnen, faserplattenbahnen u. dgl. pressgutbahnen"
GB2147820A (en) * 1983-10-11 1985-05-22 Rexnord Inc Belt press
DE3432549A1 (de) * 1984-09-05 1986-03-13 G. Siempelkamp Gmbh & Co, 4150 Krefeld Kontinuierlich arbeitende presse zum verpressen von spanplattenbahnen, faserplattenbahnen u.dgl. pressgutbahnen
DE3743665A1 (de) * 1987-12-22 1989-07-06 Dieffenbacher Gmbh Maschf Kontinuierlich arbeitende presse
DE4301594A1 (de) * 1993-01-21 1994-08-11 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur Herstellung von Spanplatten

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4446091A1 (de) 1994-12-22 1996-06-27 Dieffenbacher Gmbh Maschf Pressengestell
DE19518879A1 (de) 1995-05-28 1996-12-05 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur Herstellung von Spanplatten

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3119529A1 (de) * 1981-05-16 1982-12-02 G. Siempelkamp Gmbh & Co, 4150 Krefeld "vorrichtung zur herstellung von spanplattenbahnen, faserplattenbahnen u. dgl. pressgutbahnen"
GB2147820A (en) * 1983-10-11 1985-05-22 Rexnord Inc Belt press
DE3432549A1 (de) * 1984-09-05 1986-03-13 G. Siempelkamp Gmbh & Co, 4150 Krefeld Kontinuierlich arbeitende presse zum verpressen von spanplattenbahnen, faserplattenbahnen u.dgl. pressgutbahnen
DE3743665A1 (de) * 1987-12-22 1989-07-06 Dieffenbacher Gmbh Maschf Kontinuierlich arbeitende presse
DE4301594A1 (de) * 1993-01-21 1994-08-11 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur Herstellung von Spanplatten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113474153A (zh) * 2018-11-27 2021-10-01 Azl亚琛有限责任公司 用于挤压加工扁平材料的装置
CN113474153B (zh) * 2018-11-27 2023-10-13 Azl亚琛有限责任公司 用于挤压加工扁平材料的装置

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Publication number Publication date
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