EP3542981A1 - Presse pour pressage et collage de lamelles en bois et leur procédé de pressage - Google Patents

Presse pour pressage et collage de lamelles en bois et leur procédé de pressage Download PDF

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Publication number
EP3542981A1
EP3542981A1 EP19163807.1A EP19163807A EP3542981A1 EP 3542981 A1 EP3542981 A1 EP 3542981A1 EP 19163807 A EP19163807 A EP 19163807A EP 3542981 A1 EP3542981 A1 EP 3542981A1
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EP
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Prior art keywords
press
pusher
pressing
wooden
lamellas
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Granted
Application number
EP19163807.1A
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German (de)
English (en)
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EP3542981B1 (fr
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Gregor Ledinek
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles
    • B27M3/0026—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally
    • B27M3/0053—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally using glue

Definitions

  • the subject of the invention is a press for pressing and gluing wooden lamellas and a method of their pressing or, more precisely, a press for continuous pressing and gluing of pre-machined and calibrated wooden lamellas of the same and/or of different lengths into laminated panels of optional widths, with or without intermediate openings, without wooden lamellas waste, which includes a method of width pressing the wooden lamellas in the gluing phase.
  • the technical problem solved by this invention is such a construction of the press that will enable continuous and, thus, flow travelling of wooden lamellas of optional, i.e. of various lengths, without lamella waste, in the initial phase of pressing and gluing them into laminated panels of optional widths, with or without intermediate openings. Furthermore, it will enable a production of the glued panels with openings in the middle of them, which will represent a saving of wood and shorten machining time, since later no openings need to be cut.
  • An execution of the movable segments of a segment pusher on an infeed conveyor and the construction of the pusher dogs on an endless chain are in particular innovative.
  • an innovative construction and structure of the press enable a high machining productivity and quality of glued laminated panels. At the same time, the press will be compact, easy to produce, and on the basis of its construction features, the method of pressing and gluing wooden lamellas into laminated panels will be simple, efficient and rational.
  • a gluing press for laminar wood elements as well as method for pressing said elements are known.
  • boards and/or wooden lamellas can be pressed and glued exclusively within the width of the pressing area, which is dimensionally limited, and its final products are dimensionally limited laminated panels.
  • the laminated panel is pushed from the press and wooden lamellas are fed for the next laminated panel, this process is cyclically repeated.
  • wooden lamellas are pressed pneumatically. Weakness and deficiency of this press is, in particular, dimensional limitation of laminated panels, and the cyclic process of their manufacture, which does not enable their continuous production without interruptions.
  • DE 2 940 802 A1 it is known a device for gluing and pressing plates of wooden lamellas having one or both longer side edges obliquely executed, which is why the edges are not parallel to each other.
  • the pushers are of an oscillating execution so that they can be adjusted to the oblique side edges of wooden lamellas that are pressed.
  • a machine for gluing panels made from laminated wooden elements according to document EP 1 157 794 A2 is known. According to this solution, inside the area for pressing wooden lamellas, the wooden lamellas are pre-prepared in the width of the laminated panel, the width of which is limited with the width of the press.
  • the solution to the described technical problem is based on the innovative construction of a press for pressing and gluing wooden lamellas according to the present invention that enables continuous pressing and gluing of calibrated wooden lamellas into laminated panels of optional widths, with or without intermediate openings and without limitations regarding their width, without waste of wooden lamellas in the initial pressing phase.
  • the invention is based on permanent development of the individual vital assemblies of the press, with the focus on the method of continuous pressing and gluing of wooden lamellas into laminated panels of optional widths, with or without intermediate openings, and without waste of wooden lamellas.
  • segment pusher represents a group of an optional number of pusher segments, which are separated from each other, on an infeed conveyor.
  • Each endless chain has at least two pusher dogs.
  • Segments of the segment pusher of wooden lamellas which can be of the same or of different lengths, push the wooden lamellas transversely into the pressing area of the press.
  • the pusher dogs enable an appropriate squeezing of wooden lamellas against each other within the pressing area, from the first feeding of the press onwards, thereby preventing ejection of wooden lamellas within the laminated panels due to poor mutual gluing.
  • the wooden lamellas Before pressing and gluing in the press, the wooden lamellas are machined and calibrated. Thus, all wooden lamellas are of the same width and thickness before the operation, with machined side longitudinal edges, their lengths can, however, differ.
  • the press for pressing and gluing wooden lamellas into laminated panels basically consists of a glue applicator, infeed conveyor with movable segments of a segment pusher, cut-off saw, non-driven roller conveyor, and endless chains with their drives and pusher dogs. All these assemblies and components are built into a compact housing of the press.
  • the infeed conveyor consists of a non-driven roller conveyor, segments of a segment pusher with hydraulic cylinders and crank mechanisms, swings with drive wheels and swing arms, transverse shifters and oscillating limiters.
  • the segments of the segment pusher are movably fixed.
  • the number of segments is optional, it depends on the dimensions of the infeed conveyor.
  • Each segment of the segment pusher is fixed movably and separately to the corresponding linear guide and has its own servohydraulic drive in the form of a hydraulic cylinder. All segments in the segment pusher operate synchronously and very precisely, which is enabled by a measuring system within the hydraulic cylinders and the corresponding control system with appropriate software. In this way, it is ensured that linearity of feeding the wooden lamellas to the press along its entire length is very precise, the precision is several hundredths of a millimetre, which represents the basis of high quality and efficient pressing. This prevents wooden lamellas from leaving the optimal direction of movement and the working area of the press during the process of pressing. Division of segment pusher into several separated segments represents an important advantage during transport and press assembly.
  • An optional number of endless chains with pusher dogs can be built into the press, the number is limited with the press width.
  • Endless chains are parallel to each other and slightly separated from each other, whereby they move by means of pusher dogs, which are inserted with bearing wheels within channels, formed by corresponding pairs of support laths.
  • On each endless chain at least two pusher dogs are preferentially located, or more than two.
  • a glue layer is applied to the longer side edges of the wooden lamellas by the glue applicator, afterwards wooden lamellas travel along the infeed conveyor towards the entrance into the pressing area of the press.
  • the drive wheels operating cyclically, push them to the central position in the press, afterwards, transverse shifters push one or simultaneously up to two wooden lamellas into the press in a cyclical, repeated way, thereby preparing space for the next wooden lamella or two that follow.
  • Each wooden lamella pushed towards the press by means of the corresponding transverse shifter moves, in a pressing position, straight-lined towards the working area of the press, afterwards the segments of the segment pusher push it into it.
  • the pusher dogs are activated and they move closer to them, whereby they either push or hold lamellas, depending on their length. If the current wooden lamella is shorter than the previous one, pusher dogs push it forward. If the current wooden lamella is longer than the previous one, the pusher dogs hold it back until its end aligns with the end of the neighbouring shorter wooden lamella. The previously described alignment of ends of wooden lamellas takes place continuously within a production cycle. In this way, optimally glued joints between pressed lamellas are ensured along the entire length of their longer side edges, without intermediate stops during pressing.
  • the pusher dogs on the endless chains are activated also during each first feeding of the press with wooden lamellas, whereby they operate in such a way that they hold the first fed wooden lamella and all further ones that follow the first one until the pressing area within the press is full, whereupon the pusher dogs move away and the press operates fully automatically.
  • the pusher dogs on the endless chains re-activate in order to push the pressed and glued laminated panel from the press.
  • the pusher dogs serve for holding lamellas when forming openings inside laminated panels, in the direction of the movement of the wooden lamellas forward and backward.
  • the pusher dogs are activated at the beginning and at the end of the pre-determined opening and they hold the rest of the laminated panel before and after the opening under an appropriate pressure.
  • the novelty of the presented invention is thus in the constructional execution of the machining units as well as in the method of pressing and gluing wooden lamellas into laminated panels, with or without intermediate openings.
  • the main characteristic of the present invention is the solution of the previously described technical problem with an innovative construction of a press 3 for the continuous positioning, pressing and gluing of wooden lamellas 5, 5.1, 5.2 of various or equal lengths into laminated panels 30 of various widths, with or without intermediate openings 37, 38.
  • the press 3 will enable continuous positioning, pressing and gluing of calibrated wooden lamellas 5, 5.1, 5.2 of equal or various lengths into laminated panels 30 of optional widths, without limitations regarding their widths, which is due to a segment pusher 17 on an infeed conveyor 1. Furthermore, it will enable pressing and gluing of laminated panels 30 absolutely without waste of wooden lamellas 5, 5.1, 5.2 in the initial phase of pressing, i.e.
  • pusher dogs 21 enable continuous gluing of wooden lamellas 5, 5.1 and 5.2 of various lengths as shown in Fig. 14 .
  • this characteristic of the press 3 with pusher dogs 21 on endless chains 22 enables gluing of laminated panels 30 with larger and/or smaller intermediate openings 37, 38, saving the material, i.e. saving in reference to wooden lamellas 5, 5.1, 5.2, as after completed gluing of these laminated panels 30, a cutting of the openings 37, 38 does not take place, since these openings have already been formed during the process of pressing and gluing. This is shown in Fig. 15 .
  • the construction of the press 3 according to the invention enables continuous pressing and gluing of wooden lamellas 5, 5.1, 5.2 of equal or various lengths into laminated panels 30 without any interruptions, which is made possible by the segment pusher 17 with its segments on the infeed conveyor 1.
  • the press 3 for pressing and gluing wooden lamellas 5, 5.1, 5.2 consists of a glue applicator 2, infeed conveyor 1 with segments of a segment pusher 17, a cut-off saw 4, a non-driven roller conveyor 7 and endless chains 22 with drives 29 and pusher dogs 21.
  • the glue applicator 2 is located at the entrance into the press 3, more precisely, in front of the infeed conveyor 1, which is located along one side of the housing of the press 3, whereas the cut-off saw 4 is located along the opposite side of the housing, both of them are made along the entire length of the press 3.
  • the infeed conveyor 1 consists of a non-driven roller conveyor 7, above which the drive wheels 10 are located in sequence and below which movable segments of the segment pusher 17 are positioned.
  • a hydraulic cylinder 16 with a measuring system is located.
  • endless chains 22 with pusher dogs 21 are positioned in such a way that they lie at the beginning of the infeed conveyor 1 and so that their upper surface is slightly under the level of the non-driven roller conveyor 7, and under the level of the segments of the segment pusher 17 respectively. Laterally and parallel with the endless chains 22, there run support laths 27 and slightly above them, there are transverse pressing laths 26.
  • Fig. 5 shows that the swings 6 and oscillating limiters 14 are positioned on the housing of the press 3, above the non-driven roller conveyor 7 and perpendicular to it, with a space between each other and in an alternating order. Above the swings 6 and the oscillating limiters 14, there is a set of transverse shifters 15 spaced from one another. The segments of the segment pusher 17 are formed transversely under the non-driven roller conveyor 7.
  • Each of the swings 6 consists of a two-leg crank mechanism 12, which is movable in the joint and is, via hydraulic cylinder with a piston rod 13, connected with a swing arm 11 with a drive wheel 10 driven by the servo electric drive 9.
  • the drive wheel 10 is movable in the vertical direction and it operates in a cyclical mode, i.e. it is driven when located on the wooden lamellas.
  • Under the swings 6 with the driving wheels 10, a non-driven roller conveyor 7 with free-running rollers 8 is positioned. The described is shown in Fig. 6 .
  • Fig. 8 and Fig. 9 show the construction and the position of the segments of the segment pusher 17.
  • Each segment of this segment pusher 17 consists of a horizontal segment pusher plate 33 with a clevis bracket 34.
  • the segments of the segment pusher 17 are fixed movably to the infeed conveyor 1 so that, with the segment pusher plate 33, they lie in the plane that is typical of the plane of wooden lamellas 5, 5.1, 5.2, when travelling along the infeed conveyor 1, and they lie slightly above the level of linear guides 36 that guide them.
  • the segment pusher plates 33 are movably connected with the swivel head 19 of the hydraulic cylinder 16 via clevis bracket 34. This means that each hydraulic cylinder 16 is, with one of its ends, movably connected via swivel head 19 with a clevis bracket 34 on the corresponding segment of the segment pusher 17, whereas with the opposite end, it is connected via cylinder clevis end 35 to the framework of the infeed conveyor 1. Under the hydraulic cylinder 16 and parallel to it, a linear positon sensor (18) with a magnetic encoder (20) is located. The described is shown in Figures 8 and 9 .
  • Fig. 10 shows that pusher dogs 21 are fixed perpendicularly to endless chains 22 so that their bearing wheels 25 travel along the pairs of parallel guide channels 28 through the entire pressing area of the press 3.
  • One guide channel 28 is located at each side of the corresponding pusher dog 21, and it lies between the corresponding support lath 27 and the endless chain 22.
  • Pusher dogs 21 are made on endless chains 22 in transverse sets and they are in the same horizontal axis with them, whereby all transverse sets have, as a rule, the same number of pusher dogs 21.
  • guide channels 28 are made next to and parallel to pusher dogs 21, at least one on each side.
  • the parallel bearing wheels 25 of both pairs that are on the same side run along the same corresponding guide channel 28.
  • Each individual pusher dog 21 has two pairs of bearing wheels 25 put on the bolt 23 and separated by a certain distance, whereby the bearing wheels 25 of both pairs at the same side of the pusher dog 21 run along the same track, i.e. inside the same corresponding guide channel 28.
  • pusher dogs 21 are located and fixed with a distance between them along the entire circumference of the endless chains 22, whereby each endless chain 22 has its own drive 29.
  • Fig.11, Fig. 12 and Fig. 13 show a construction of pusher dogs 21.
  • the base of each pusher dog 21 is formed by a monobloc body 24 with a pair of bearing wheels 25.
  • the monobloc body 24 consists of a pusher dog base 31 and a pusher dog shoulder 32, which is made perpendicularly on it and preferentially of the form of a slightly lower rectangular solid.
  • the bearing wheels 25 are attached to the corresponding bolt 23 in twos, whereas both bolts 23 are inserted through the transverse holes in the pusher dog base 31.
  • the bolts 23 with bearing wheels 25 are slightly separated from each other and are positioned at both ends of the pusher dog base 31.
  • the pusher dogs 21 have a form of a simple child vehicle.
  • the infeed conveyor 1 with movable segments of the segment pusher 17, the glue applicator 2, cut-off saw 4, non-driven roller conveyor 7 and endless chains 22 with drives and pusher dogs 21 are located, what is previously described in relation to the construction of the press 3.
  • the consequence of its innovative construction is an innovative method of positioning, gluing and pressing calibrated wooden lamellas 5, 5.1, 5.2 into laminated panels 30 of optional widths, with or without intermediate openings 37, 38, without waste of wooden lamellas.
  • Wooden lamellas 5, 5.1, 5.2 are machined and calibrated before pressing and gluing, which makes them all of the same width and the same thickness, but they can be of different lengths, and also their longitudinal side edges are machined. If producing laminated panels 30 with openings 37, 38, which are provided, for example, for the installation of windows and/or doors into walls of a building, a larger number of lamellas 5, 5.1, 5.2 of a suitable length is previously prepared in a set and in the distance required for forming individual openings 37 respectively 38, prior to application of the glue.
  • a glue layer is applied to longer side edges of wooden lamellas 5, 5.1, 5.2 with the glue applicator 2, afterwards, they travel along the infeed conveyor 1 by means of drive wheels 10 to the central position in the press 3.
  • the central position is regulated each time with the drive wheels 10, driven with servo electric drives 9.
  • transverse shifters 15 push transversally one to two wooden lamellas 5 and/or 5.1 and/or 5.2, when forming openings 37, 38 into laminated panels 30 also several wooden lamellas 5, 5.1, 5.2 at the same time, to the entrance of the press 3 to make space for the next lamella 5 or 5.1 or 5.2 that follows. This is repeated cyclically through the entire process of positioning, pressing and gluing.
  • segments of the segment pusher 17 have their own servohydraulic drive via hydraulic cylinder 16, they can, via swivel head 19 of the hydraulic cylinder 16, straight-lined push wooden lamellas 5, 5.1, 5.2 along the infeed conveyor 1 transversely to the pressing area of the press 3, whereby they centrally align them.
  • the segments of the segment pusher 17 operate synchronously by means of an appropriate measuring system, built into the hydraulic cylinders 16, and by using the corresponding control and suitable software. The synchronous operation of the segments of the segment pusher 17 is ensured by a suitable measuring system.
  • a suitable measuring system thus, positioning of one or more wooden lamellas 5, 5.1, 5.2 to the desired optional position on the infeed conveyor 1 before the press 3 is enabled.
  • Pusher dogs 21 are active when feeding the press 3 with wooden lamellas 5 and/or 5.1 and/or 5.2 of various lengths, when pressing and gluing them and when removing the glued laminated panels 30 from it. When manufacturing laminated panels 30 from wooden lamellas 5 or 5.1 or 5.2 of equal length, pusher dogs 21 are not active and they are positioned outside their reach.
  • the pusher dogs 21 fixed to endless chains 22 are activated at one of their ends, they move closer to them and push the wooden lamellas 5 and/or 5.1 and/or 5.2 into the press 3 or they hold them before they enter into the press 3, depending on the length of the wooden lamellas 5 and/or 5.1 and/or 5.2
  • the pusher dogs 21 enable positioning, pressing and gluing of the wooden lamellas 5, 5.1, 5.2 of various lengths without any interruptions of the pressing process.
  • the pusher dogs 21 enable positioning, pressing and gluing of the wooden lamellas 5 and 5.1 with the intermediate openings 37 and/or 38 within an individual laminated panel 30, which is useable when producing walls for buildings with prefabricated openings for windows and doors, which, in the known presses of this type so far in this way is not possible.
  • the presented pressing of wooden lamellas 5 and 5.1 into laminated panels 30 with opening 37 and/or 38 they travel in direction B, whereby the pressing force is produced by pusher dogs 21 in such a way that, within the opening 37 and/or opening 38, one set of pusher dogs 21 presses in the direction of movement B, whereas the opposite set of pusher dogs 21 presses in the direction that is opposite to direction B. This is shown in Fig. 15 .
  • the precondition for pressing laminated panels 30 with openings 37 and/or 38 is the appropriate positioning of the wooden lamellas 5 and 5.1 before they enter into the press 3, which is executed by the infeed conveyor 1 with its driven rollers that make it possible to stop the lamellas 5, 5.1 at an optional position.
  • wooden lamellas 5 and 5.1 are positioned with intermediate interruptions in the size of the opening 37 or opening 38.
  • the described method of positioning wooden lamellas 5 and 5.1 enables a formation of the openings 37 and 38 during the pressing process, without shortening the wooden lamellas 5 and 5.1 and without cutting of the openings 37, 38 later, after the pressing and gluing process of laminated panels 30 is completed. This brings great material savings of the wooden lamellas 5 and 5.1, and, thus, also for the laminated panels 30.
  • the pusher dogs 21 are activated also at each first feeding of the press 3 with the wooden lamellas 5 and/or 5.1 and/or 5.2. Thereby they function in such a way that they hold the first fed wooden lamella 5 or 5.1 or 5.2 and all the others that follow it as long as the pressing area in the press 3 is not full, afterwards the pusher dogs 21 move away and the press 3 operates further automatically.
  • the pusher dogs 21 are activated again, when the press 3 is empty after the last fed wooden lamella 5 or 5.1 or 5.2 in the set, in order to press and push the pressed and glued laminated panel 30 from the press 3.
  • the innovative structure of the individual machining units of the press 3 results in an innovative method of pressing and gluing wooden lamellas 5, 5.1, 5.2 into laminated panels 30.
  • the advantages and features of these innovative solutions include primarily continuous pressing and gluing of previously calibrated wooden lamellas 5, 5.1, 5.2 into laminated panels 30 with or without the intermediate openings 37, 38, without limitations of their width and without waste of wooden lamellas 5, 5.1, 5.2.
EP19163807.1A 2018-03-22 2019-03-19 Presse pour pressage et collage de lamelles en bois et leur procédé de pressage Active EP3542981B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI201800066A SI25323A (sl) 2018-03-22 2018-03-22 Stiskalnica za stiskanje in lepljenje lesnih lamel ter postopek njihovega stiskanja

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EP3542981A1 true EP3542981A1 (fr) 2019-09-25
EP3542981B1 EP3542981B1 (fr) 2020-08-12

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EP19163807.1A Active EP3542981B1 (fr) 2018-03-22 2019-03-19 Presse pour pressage et collage de lamelles en bois et leur procédé de pressage

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021045964A (ja) * 2019-09-19 2021-03-25 グレゴール レディネック 任意の寸法の積層板への木製薄板の幅接着のための自動機械およびそれに関連する方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2940802A1 (de) 1979-10-09 1981-04-23 Franz Torwegge Maschinenfabrik GmbH & Co KG, 4972 Löhne Vorrichtung zum aneinanderverleimen und verpressen von brettern o.dgl.
EP1157794A2 (fr) 2000-05-24 2001-11-28 GreCon Dimter Holzoptimierung Süd GmbH & Co. Dispositif de collage et procédé de pressage pour la fabrication d'une plaque former d'éléments laminaires en bois
EP1669175A1 (fr) 2004-12-07 2006-06-14 GreCon Dimter Holzoptimierung Süd GmbH & Co. KG Presse de collage pour éléments laminaires en bois ainsi que procédé de pressage des dites éléments
US20150233117A1 (en) * 2012-05-09 2015-08-20 Bruno Raudin Method and device for producing a ply involved in the construction of a multi-ply panel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2940802A1 (de) 1979-10-09 1981-04-23 Franz Torwegge Maschinenfabrik GmbH & Co KG, 4972 Löhne Vorrichtung zum aneinanderverleimen und verpressen von brettern o.dgl.
EP1157794A2 (fr) 2000-05-24 2001-11-28 GreCon Dimter Holzoptimierung Süd GmbH & Co. Dispositif de collage et procédé de pressage pour la fabrication d'une plaque former d'éléments laminaires en bois
EP1669175A1 (fr) 2004-12-07 2006-06-14 GreCon Dimter Holzoptimierung Süd GmbH & Co. KG Presse de collage pour éléments laminaires en bois ainsi que procédé de pressage des dites éléments
US20150233117A1 (en) * 2012-05-09 2015-08-20 Bruno Raudin Method and device for producing a ply involved in the construction of a multi-ply panel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021045964A (ja) * 2019-09-19 2021-03-25 グレゴール レディネック 任意の寸法の積層板への木製薄板の幅接着のための自動機械およびそれに関連する方法
US11338470B2 (en) 2019-09-19 2022-05-24 Gregor Ledinek Automatic machine for width gluing of wooden lamellas into laminated plates of optional dimensions and a method relating thereto

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Publication number Publication date
SI25323A (sl) 2018-06-29
EP3542981B1 (fr) 2020-08-12

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