EP1829657A2 - Procédé destinés à la fabrication sans interruption de plaques de matière première, et une presse préliminaire destinée à la réalisation du procédé - Google Patents

Procédé destinés à la fabrication sans interruption de plaques de matière première, et une presse préliminaire destinée à la réalisation du procédé Download PDF

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Publication number
EP1829657A2
EP1829657A2 EP07004277A EP07004277A EP1829657A2 EP 1829657 A2 EP1829657 A2 EP 1829657A2 EP 07004277 A EP07004277 A EP 07004277A EP 07004277 A EP07004277 A EP 07004277A EP 1829657 A2 EP1829657 A2 EP 1829657A2
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EP
European Patent Office
Prior art keywords
compression
main
line
zone
belt
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Withdrawn
Application number
EP07004277A
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German (de)
English (en)
Other versions
EP1829657A3 (fr
Inventor
Gernot Von Haas
Detlev Kroll
Dirk Zanger
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.)
Dieffenbacher GmbH and Co KG
Original Assignee
Dieffenbacher GmbH and Co KG
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 and Co KG filed Critical Dieffenbacher GmbH and Co KG
Publication of EP1829657A2 publication Critical patent/EP1829657A2/fr
Publication of EP1829657A3 publication Critical patent/EP1829657A3/fr
Withdrawn legal-status Critical Current

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    • 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

Definitions

  • the invention relates to a method for the continuous production of material plates according to the preamble of claim 1.
  • the invention further relates to a pre-press for carrying out the method according to the invention.
  • Such a method and apparatus of which the invention is based is known from DE 27 28 660 A1 already known. Accordingly, to be deaerated and compacted directly after the formation of a scattered Pressgutmatte. Immediately thereafter, the compacted pressed material mat is compacted in a compacting unit, usually a continuously operating double belt press or a calender press, by means of pressure and heat to form a wood-based panel and cured.
  • the pre-press used here consists of a belt for venting, which circulates endlessly below the press material mat a venting belt and above the pressed material mat a solid endless circulating belt. The breather belt is thereby over a Pulled table to a pressure roller and the upper solid belt is supported with rollers.
  • the design effort of the above pre-press has been proven in practice, it is now no longer necessary to intervene in the structure and in the parameters of the scattered Pressgutmatte in most industrial processes, since the process parameters for the pressing and curing already with the highest Efficiency in the processes before the dispersion of the material to be pressed can be adjusted to the forming belt.
  • the task of the pre-press is focused on the smoothest possible process flow with few production-related To ensure disturbances and to be able to use not only low wear but also high pressures during pre-pressing. Due to their structural design, however, the above prepressing is not able to apply specific pressures or line pressures of more than 100 N / mm to the pressed material mat.
  • the currently available and available ventilation belts have a maximum tensile stress of 20 N / mm, so that can not be compressed with high pressures.
  • rolling supports are used in the form of arranged over the width of the pressed material compaction compression rollers for the compression bands.
  • the compaction rollers In order to provide appropriate pressures for compaction, the compaction rollers must have a minimum diameter of 200 mm. However, this results in a high support distance in the main compression region of a pre-press at maximum compression force, which leads to a wave-like compression pattern of the pressed material mat.
  • the pressed material mat presses the compacting belt between the compaction rollers upwards until it is again guided against the pressed material at the subsequent compacting roller at the radius of the roller in order to compact it. Especially in the area of the strongest compaction of the pressed material mat, this leads to excessive loads and wear of the compacting belt.
  • these known pre-presses have the problem in common that the pressed material mat is relieved spontaneously after the pre-compression usually at the radius of the last deflection drum of the corresponding compression belt. Due to the highly elastic compression of the pressed material mat creates a high internal counter pressure from the non-plastically deformed material, which requires that after a pre-pressing and concomitant reduction of Pressgutmatten Left to 25% of the scattering height of the pressed material mat back to 50% to 80% of the original scatter height springs back. This creates cracks or fractures in the structure of the compacted pressed material mat, which can expand in the course of the process during the transfer from the forming belt to the next conveyor belts.
  • the invention is based on the object, a method of the type mentioned in the preamble so that a gentle pre-compression of Pressgutmatte in Hauptverdichtungs Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva Geneva, a gentle pre-compression of Pressgutmatte in Mannverdichtungs Geneva
  • the discharge of Pressgutmatte is so gently relieved in the outlet of the pre-press that no cracks or potential breakages in the pressed material mat arise.
  • the solution for the method is that in the compression zone from the contact of the Pressgutmatte with the upper compression belt to the main compression line a swelling compression force is introduced into the Pressgutmatte, wherein the compression force increases from a threshold maximum to the next threshold maximum along a monotonously rising line to the main compression line , wherein the main compression line represents the boundary of the compression zone to the relief zone with a compression maximum of the pressed material mat, wherein the main compression line is in the plane through the longitudinal axes of the main compression rollers and wherein after the main compression line Compression force is reduced to 0 N / mm 2 except for a technical exception along a monotonous discharge line.
  • the solution for a pre-press according to the invention for carrying out the method is that the main compaction of the pressed material at the end of the compaction zone a comparison with the compression rollers enlarged Hauptverdichtungswalze are arranged with opposite Hauptverdichtungswalze, and wherein after the two main compaction rollers at the top and / or bottom outlet plates are arranged.
  • the compression bands are very soft, which causes both at an even low specific pressure between two support points sag (buckling) and the pressed material mat is partially relieved even on both sides and put back on the next compression roller, so are rolling.
  • Such a flexing work may well have advantages in terms of compression of the pressed material mat, but increases above average wear of the machine elements and is harmless only at the beginning of compaction in the pre-press, since the counter-pressure forces from the Pressgutmatte out not so strong that the flexing work on Compaction belt could significantly affect the fatigue strength.
  • the fulling with a bulging of the compaction belts in total over 10 mm leads to cracks in the pressed material mat, if they are during the discharge of the pressed material mat is carried out.
  • the lower main compression roller facing the upper main compression roller may have a smaller diameter or may be the same diameter as the main compressor roller. Since the lower compression band may not bulge too far after the main compaction rollers, it is also useful here to provide a discharge plate. If the precompression zone with the compaction rollers is not hinged to the main pressure roller, with the same mat height and the same height of the main pressure roller, but different inlet height of the supercharger of the booster in the mat or retracted. If the top spout can be fixed according to the height, the pressure can be kept constant on the Pressgutmatte with different position of the precompression zone.
  • the height adjustability of the upper outlet plate for pressure control on the pressed material mat has the further advantage that the frictional forces in the region of the outlet plates can be controlled on the compression bands. If too much specific pressure is applied to the outlet plates, the belt friction can become so great that the drives can no longer transmit these tensile stresses by means of the drums. The drive drums then rotate or the compaction belts break because too high tensile stresses are applied.
  • the outlet plate is preferably made with a thickness of 10 mm and a length of 250 - 450 mm. In the inlet and outlet, a radius is provided for smoothly sliding the compacting belts.
  • the compression belts are preferably driven on the upper main compressor roller and the lower counter roller, since there the highest contact forces are present.
  • the driven compression rollers may be rubberized to increase friction, thereby transmitting more drive power.
  • the compression belt is pulled smoothly in front of the main compressor roller because there are the highest belt tensions.
  • the belt tension in the post-compression zone and under the outlet plate is applied in the return.
  • a rolling support similar to a carpet may be provided to an outlet plate, whereby lower frictional forces are exerted on the compression belt.
  • the rolling support must be equipped with such small rollers that they do not allow significant deflection of the compression straps and requires higher technical effort, since these roles either all have to be supported again with rolling abutments or a flat support of the roles this own circulation need.
  • only an outlet plate can be provided below. In this case, the compression band would have to be tightened more in the relief zone, if this is permissible in a strength analysis.
  • FIG. 1 shows, in a schematic side view, the construction according to the invention of a pre-press 1 for carrying out the method.
  • the compacting belt 3 may be an endlessly circulating forming belt, which begins in the spreading area of the forming stations and until just before the continuous press.
  • the person skilled in the basic structure of such a production plant is a concept, so that neither the forming station for producing a pressed product mat 10 nor the continuously operating press have been shown in the drawing.
  • a compaction press can be used in front of a calender press, but also a compaction of pressed material mats 10 before short-cycle press systems would be conceivable, so that after compaction of the Pressgutmatte 10 this would be handed over to an allocation device.
  • a compression belt 3 can also be used separately only for the pre-press 1; In this case, a forming belt from the spreading area (not shown) transfers the pressed material mat 10 to a compacting belt 3 which revolves only in the pre-press 1 and which, like the upper compacting belt 2, is guided endlessly over deflection rollers 4. After precompression, the pressed material mat 10 is then transferred to a further conveyor belt or directly to the continuously operating press.
  • the compression zone 12 ends and merges seamlessly into the relief zone 13.
  • a discharge plate 9 which ensures a monotonous and uniform discharge of the pressed material mat 10.
  • additional discharge rollers 27 may be provided after the outlet plate 9, before the compression belt 2 is deflected via the outlet roller 29 and guided again in the direction of the inlet roller 5 via the deflection rollers 4. This makes it possible to compress a wide range of press material mats 10 of various types and heights.
  • the lower compression belt depending on the design of the pre-press 1, also support by means of a discharge plate 9 '. This serves as uniform as possible a discharge of the pressed material mat 10 and a prevention of breaks and cracks in a spontaneous springing or a walking relief on back-up rollers in the outlet.
  • FIG. 1 a schematic representation of a pre-press 1 is compared with a graph illustrating the compression force of the upper compression belt 2 acting on the press material mat 10 over the path through the pre-press 1.
  • the main compression roller 7 with a diameter greater than 500 mm a compression travel of 20 mm to reach the maximum compression 18 back ,
  • the Hauptverdichtungszone 28 may not have too great a steepness per meter of feed, otherwise the pressed material mat 10 is moved in parts or total and thus inhomogeneities occur.
  • the compaction should not exceed 120 mm / m. This means that with a compression of 20 mm under full force, the diameter of the main compaction roller should be greater than 500 mm, preferably 600-1000 mm. Even the initial compression zone 12 should not come up with too much steepness. Therefore, it is preferable to use a plurality of smaller compression rollers 6, wherein initially, the walking of the compression belts 2 and 3 between the compression rollers 6 under the lower mat back pressures occurs only to a very small extent and thus negligibly.
  • the relief zone begins 13. From here the Pressgutmatte 10 is controlled relieved and a walking or abrupt relief by the employment of a discharge plate 9/9 'to the compression belt 2/3 avoided.
  • the technical exception 21 in the line 17 of the discharge caused by the short bulge 22 of Pressgutmatte between Hauptverdichtungswalze 7 and outlet plate 9. It should be maximum unilateral bulge 22 of the pressed material mat 10 only 5 mm, with a double-sided possible buckling of the material 10 no longer than 10 mm. From this exception 21 there is a purely monotonous lowering of the compaction force along the line 17.
  • the relief zone is not finished directly in the drawing, its length is dependent on the nature of the pressed material mat 10 and results from the point where the pressed material mat 10, the compression belt 2 above no longer touched. In strongly rebounding Pressgutmatten 10, it may be necessary in addition to the outlet plate 9 still order discharge rollers 27. Since in this advanced stage of discharge no large forces act more on the tape tension a monotonous discharge in this area is possible, or a minimally walking discharge is negligible and harmless. Too long an outlet plate 9 could lead to exceeding the permissible tensile stresses on the compression belt 2/3 by the resulting friction.
  • FIG. 3 describes an optimum structure of the relief zone.
  • the outlet plate 9 on the inlet side a joint 25 corresponding height adjustable fixed with the main compression roller 7.
  • actuators 26 preferably double-acting hydraulic cylinder piston assemblies arranged, which can adjust the outlet side of the outlet plate 9 arbitrarily and thus allow a variety of angle settings.
  • the optional relief rollers 27 can be manipulated separately via their own actuators or directly with the actuators 26.
  • a displacement or a pressure control can be used so that no sudden relief of the compression force within a few millimeters of relief zone 13 can occur.
  • the slope of the Relief line 17 are regulated so that no more than 2 mm mat height per 10 mm feed are relieved.
  • a further support of the compression belt 2 in front of the main compression roller 7 or 8 may be necessary in prepressing with high compression pressures.
  • either support rollers 31 or support plates 30 may be arranged, of course, as required, corresponding to the compression belt 3 in analogous application.
  • these must be adapted to the installation space between the compaction rollers 6 and the main compaction rollers 7, 8.
  • the main compaction roller should have a diameter of more than 500 mm.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP07004277A 2006-03-03 2007-03-01 Procédé destinés à la fabrication sans interruption de plaques de matière première, et une presse préliminaire destinée à la réalisation du procédé Withdrawn EP1829657A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610010439 DE102006010439A1 (de) 2006-03-03 2006-03-03 Verfahren zur kontinuierlichen Herstellung von Werkstoffplatten und eine Vorpresse zur Durchführung des Verfahrens

Publications (2)

Publication Number Publication Date
EP1829657A2 true EP1829657A2 (fr) 2007-09-05
EP1829657A3 EP1829657A3 (fr) 2009-08-19

Family

ID=38006926

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EP07004277A Withdrawn EP1829657A3 (fr) 2006-03-03 2007-03-01 Procédé destinés à la fabrication sans interruption de plaques de matière première, et une presse préliminaire destinée à la réalisation du procédé

Country Status (3)

Country Link
EP (1) EP1829657A3 (fr)
CN (1) CN101269515A (fr)
DE (1) DE102006010439A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018073056A1 (fr) * 2016-10-18 2018-04-26 Siempelkamp Maschinen- Und Anlagenbau Gmbh Procédé permettant de presser un mat de matière à presser et presse fonctionnant en continu
DE102017110995A1 (de) 2017-05-19 2018-11-22 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorpresse und System zum kontinuierlichen Herstellen von Werkstoffplatten, Verfahren zum Einbringen oder Entnehmen des Pressenbandes und Transportvorrichtung zum Aufnehmen des Pressenbandes
EP3406435A1 (fr) * 2017-05-18 2018-11-28 Siempelkamp Maschinen- und Anlagenbau GmbH Procédé et presse de compression d'une natte de matériau comprimable

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102555018A (zh) * 2012-01-18 2012-07-11 敦化市亚联机械制造有限公司 用于高速生产薄板的双钢带连续平压机
DE102015010056A1 (de) * 2015-08-01 2017-02-02 Siempelkamp Maschinen- Und Anlagenbau Gmbh Vorrichtung und Verfahren zur Entwässerung von Wasser enthaltendem Gut
CN113334524A (zh) * 2021-06-17 2021-09-03 安徽科林新材料科技有限公司 一种阻燃刨花板全自动预压装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1939784A1 (de) * 1969-08-05 1971-03-04 Dieffenbacher Gmbh Maschf Kontinuierlich arbeitende Presse
DE2728660A1 (de) * 1976-07-05 1978-01-12 Defibrator Fiberboard Ab Verfahren und vorrichtung zur herstellung von tafeln, platten o.dgl. aus zellstoff-, faser- oder spanwerkstoff nach der trockenmethode
WO1995020473A1 (fr) * 1994-01-28 1995-08-03 Sunds Defibrator Industries Ab Procede de fabrication de panneaux lignocellulosiques
DE4441017A1 (de) * 1994-11-17 1996-05-23 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur kontinuierlichen Herstellung von Holzwerkstoffplatten
US6080344A (en) * 1996-03-07 2000-06-27 Sunds Defibrator Industries Ab Method of pre-pressing fibrous material during the manufacture of board products
DE10207573C1 (de) * 2002-02-22 2003-07-03 Siempelkamp Masch & Anlagenbau Anlage zum Herstellen von Spanplatten, Faserplatten o. dgl. Holzwerkstoffplatten aus Pressgutmatten

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1939784A1 (de) * 1969-08-05 1971-03-04 Dieffenbacher Gmbh Maschf Kontinuierlich arbeitende Presse
DE2728660A1 (de) * 1976-07-05 1978-01-12 Defibrator Fiberboard Ab Verfahren und vorrichtung zur herstellung von tafeln, platten o.dgl. aus zellstoff-, faser- oder spanwerkstoff nach der trockenmethode
WO1995020473A1 (fr) * 1994-01-28 1995-08-03 Sunds Defibrator Industries Ab Procede de fabrication de panneaux lignocellulosiques
DE4441017A1 (de) * 1994-11-17 1996-05-23 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur kontinuierlichen Herstellung von Holzwerkstoffplatten
US6080344A (en) * 1996-03-07 2000-06-27 Sunds Defibrator Industries Ab Method of pre-pressing fibrous material during the manufacture of board products
DE10207573C1 (de) * 2002-02-22 2003-07-03 Siempelkamp Masch & Anlagenbau Anlage zum Herstellen von Spanplatten, Faserplatten o. dgl. Holzwerkstoffplatten aus Pressgutmatten

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018073056A1 (fr) * 2016-10-18 2018-04-26 Siempelkamp Maschinen- Und Anlagenbau Gmbh Procédé permettant de presser un mat de matière à presser et presse fonctionnant en continu
CN109843569A (zh) * 2016-10-18 2019-06-04 辛北尔康普机器及成套设备有限责任公司 用于挤压压制材料垫的方法和连续式压机
EP3406435A1 (fr) * 2017-05-18 2018-11-28 Siempelkamp Maschinen- und Anlagenbau GmbH Procédé et presse de compression d'une natte de matériau comprimable
CN108943320A (zh) * 2017-05-18 2018-12-07 辛北尔康普机器及成套设备有限责任公司 用于挤压压制材料垫的方法
CN108943320B (zh) * 2017-05-18 2021-06-15 辛北尔康普机器及成套设备有限责任公司 用于挤压压制材料垫的方法
DE102017110995A1 (de) 2017-05-19 2018-11-22 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorpresse und System zum kontinuierlichen Herstellen von Werkstoffplatten, Verfahren zum Einbringen oder Entnehmen des Pressenbandes und Transportvorrichtung zum Aufnehmen des Pressenbandes

Also Published As

Publication number Publication date
DE102006010439A1 (de) 2007-09-06
CN101269515A (zh) 2008-09-24
EP1829657A3 (fr) 2009-08-19

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