WO2017157518A1 - Procédé de fabrication de blocs à partir de pièces en bois juxtaposées et collées entre elles, ainsi qu'installation permettant de mettre en œuvre ledit procédé - Google Patents

Procédé de fabrication de blocs à partir de pièces en bois juxtaposées et collées entre elles, ainsi qu'installation permettant de mettre en œuvre ledit procédé Download PDF

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Publication number
WO2017157518A1
WO2017157518A1 PCT/EP2017/000332 EP2017000332W WO2017157518A1 WO 2017157518 A1 WO2017157518 A1 WO 2017157518A1 EP 2017000332 W EP2017000332 W EP 2017000332W WO 2017157518 A1 WO2017157518 A1 WO 2017157518A1
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WO
WIPO (PCT)
Prior art keywords
wooden parts
parts
pressure
station
wooden
Prior art date
Application number
PCT/EP2017/000332
Other languages
German (de)
English (en)
Inventor
Erhard Jung
Thomas Veit
Original Assignee
Weinig Dimter Gmbh & 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 Weinig Dimter Gmbh & Co. Kg filed Critical Weinig Dimter Gmbh & Co. Kg
Priority to EP17711570.6A priority Critical patent/EP3429811B1/fr
Priority to SI201730744T priority patent/SI3429811T1/sl
Priority to DK17711570.6T priority patent/DK3429811T3/da
Publication of WO2017157518A1 publication Critical patent/WO2017157518A1/fr

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Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/122—Laminated

Definitions

  • the invention relates to a method for producing blocks of juxtaposed, glued together wood parts according to the preamble of claim 1 and a system for carrying out such a method according to the preamble of claim 1 1st
  • the invention has the object of providing the generic method and the generic system in such a way that the blocks of the glued together wooden parts can be made inexpensively and easily.
  • the method according to the invention can be carried out very simply. Then only the alignment pressure is applied to the top of the adjoining wooden parts.
  • the wood parts are advantageously aligned before pressing in the horizontal and vertical direction against each other by applying the alignment pressure. Every second piece of wood lying down with the wedge tip is pressed upwards by a certain amount. Then, the wood parts are clean together during the pressing process, so that the resulting block has essentially the required cross-sectional dimensions, so that at most slight rework on the pressed block must be made.
  • the alignment of the wooden parts takes place in sections over the length of the block to be pressed. This makes it easy to align the individual pieces of wood against each other, without the risk that the wooden parts jam or hang.
  • the alignment process can be carried out in a simple manner when the wooden parts are clamped on the support side and the opposite side. Here, the wood parts are pressed under the pressing pressure on their oblique side surfaces against at least one stop. In this way, the Hojzmaschine before the pressing process can be aligned very accurately and easily against each other.
  • a brake pressure and the alignment (hold-down) pressure is applied over the entire length of the block to be pressed during the pressing process on an already compressed block area.
  • the wooden parts are introduced one after the other into a packaging station upstream of the pressing station.
  • the wood parts are alternately rotated about its longitudinal axis so that adjacent wood parts lie with their oblique side surfaces together.
  • the wood parts can already be collected when the wood parts are pressed into the blocks in the subsequent pressing station. In this way, results in a very effective method for producing the blocks with the best material yield.
  • the wood parts When introducing into the yerierstation the wood parts can also be rotated about its transverse axis. This is particularly the case when the wood parts are sawn from the tree trunk in axial sections and the so-called deforestation is not removed. By turning about the transverse axis is ensured that despite the existing Abholzmaschine on the wood parts juxtaposed wood parts have approximately a constant cross-sectional thickness over its length.
  • the compressed block is at least partially pushed out of the pressing station, while at the same time the next to be pressed wood parts are nachgeschoben.
  • an endless block strand can be produced, which is divided after exiting the pressing station to the extent required by sawing.
  • the pressing station is preceded by at least one packaging station.
  • the wood parts to be pressed are first collected.
  • a transfer unit with which the wood parts can be promoted in the onneierstation that the successive wooden parts are each rotated about its longitudinal axis so that they lie with their oblique longitudinal sides together. This has the consequence that the broad foot side of the wood parts is alternately on the support side and on the opposite upper side of the wooden parts. With the transfer unit, the wooden parts can be reliably brought into the necessary for the production of the block position.
  • the transfer unit is advantageously provided with at least one pivot arm which has at least one support for the wood parts to be transferred.
  • the support arm is pivotally mounted about a horizontal axis at the onneierstation.
  • the wooden parts are placed in a starting position of the swivel arm with its one oblique side lying on the support. Subsequently, the pivot arm is pivoted upwardly about the horizontal axis, whereby the recumbent wooden part is erected so that it passes in this erected position in the onneierstation.
  • the transfer unit is advantageously provided with part-circular, lying in vertical planes guide parts. They lie in the direction of the pivot axis of the pivot arm at a distance next to each other and are rotatably mounted together with the pivot arm on the pivot axis.
  • the yerierstation has in an advantageous embodiment, at least two superposed conveyor elements, between which the wooden parts are clamped. As a result, a reliable transport of the wood parts is ensured by the onneierstation.
  • the conveying elements are endless conveyors, preferably plate chain conveyors. With them, the wooden parts can be perfectly transported in the packaging station.
  • the lower or the upper run of the two conveyor elements are braced against the wood parts in an advantageous manner.
  • the pressing station is advantageously provided with a plurality of printing units, which are arranged in the feed direction of the wood parts through the pressing station in a row. This makes it possible to use all printing units simultaneously or only individual printing units during the pressing process.
  • the printing units are advantageously adjustable transversely to the wood parts in the vertical direction. As a result, the required pressure can be applied transversely to the transport direction of the wood parts in a simple manner.
  • each printing unit is associated with an opposite table top. Then the wooden parts between the printing units and the table tops can be jammed. If the wooden parts are to be transported in the pressing station, a low pressure is sufficient. If the wooden parts are to be aligned and pressed, the pressure is set correspondingly higher.
  • the setting of the pressure for aligning the wood parts against each other and for pressing is advantageously facilitated if the table tops are adjustable transversely to the feed direction of the wood parts in the pressing station in the height direction.
  • FIG. 1 is a perspective view of an inventive system for
  • FIG. 2 is a perspective view of a feed unit for the wood parts of the system according to the invention
  • 3 is a perspective view of the transition region between the feed unit and a packaging station of the system according to the invention
  • 4 is a perspective view of a transfer unit with which the wooden parts of the onneierstation be transferred
  • FIG. 6 is a perspective view of the packaging and pressing station of the system according to the invention.
  • FIG. 7 is a perspective view of a part of the pressing station, from which emerges a block produced from the wood parts,
  • Fig. 8 in side view of the onneierstation and the downstream
  • Fig. 9 in an enlarged view a part of the pressing station of the system according to the invention, seen in the transport direction of the wooden parts.
  • the plant described below is used to glue elongated pieces of wood, which have a triangular or trapezoidal cross-section, into blocks.
  • the wooden parts 1 have a trapezoidal cross-section.
  • the wooden parts 1 have two longitudinal sides 2, 3, each including an angle of 75 ° to a base 4 of the wooden parts 1.
  • a log S (FIG. 1) is sawed in axial sections so that, seen in cross-section, the circular sector-shaped wooden parts are formed. If twelve such wooden parts 1 are sawed from a trunk, the longitudinal sides 2, 3 of the wooden parts 1 are at an angle of 30 ° to each other.
  • the saw cuts are guided by the stem S so that a smaller number of wooden parts 1 is formed, then the angles between the longitudinal sides 2 and 3 are correspondingly greater. Conversely, this angle becomes smaller when more than twelve pieces of wood are cut from a trunk S by axial cuts.
  • the wooden parts 1 are first led directly from a sawmill road through a drying station to reduce the moisture content of the wood.
  • the wood moisture is reduced at the glue surfaces to a range less than about 30%.
  • the so-called deforestation 5 is not cut away before or during the sawing process on the stem S, but is also used to form the blocks.
  • This Abholztechniksanteil 5 is indicated in Fig. 1 by a hatched area. The radial width of this Abholztechnik 5 increases from one end to the other end of the trunk S. For this reason, the wood parts are rotated alternately about their longitudinal axis in the formation of the blocks. Two pieces of wood 1 with the same thickness of Abholzmaschine then turn an equally wide cross section.
  • the wooden parts 1 usually have a length between 3 or 4 m.
  • the wood parts are cut as exactly as possible to the required length.
  • the head width 6 of the wood parts is in a range of at least 10 to 20 mm.
  • the foot width is in a range of about 65 to 140 mm +/- 10 mm Abholzmaschine 5.
  • the feed unit 8 conveys the wooden parts 1 transversely to their longitudinal direction and thus forms a transverse transport unit. It has two mutually parallel chain strands 10, 1 1, which advantageously consist of two juxtaposed chains.
  • the two chain strands 10, 1 1 are endlessly formed circumferentially and over sprockets 12, 13 out.
  • Figs. 1 and 2 only the sprockets 12, 13 are shown at one end of the feed unit 8.
  • the sprockets 12, 13 are rotatably connected to each other via a shaft 14, so that both sprockets 12, 13 are driven synchronously.
  • the two chain strands 10, 1 1 are each provided with receptacles 15, 16 for the wooden parts 1.
  • the outline shape of the recordings is adapted to the outline shape of the wooden parts 1, so that they can be reliably held in the feed unit 8.
  • Adjacent seats 15, 16 are separated from each other by upright flat flaps 17, 18, each of which has the same shape and trapezoidal outline.
  • the wooden parts 1 are inserted into the receptacles 15, 16 in such a way that their narrow head side points in the direction of the respective chain strand 10, 11.
  • the wooden parts 1 are hung or inserted into the receptacles 15, 16 such that the deforestations 5 are alternately arranged once to the right and once to the left in the transport direction 9.
  • the correct position supply of the wooden parts 1 is advantageously carried out automatically when feeding from the sawmill to the feed unit 8.
  • the feed unit 8 is advantageously located in a (not shown) drying tunnel in which the wood parts 1 moisture is removed.
  • a drying tunnel in which the wood parts 1 moisture is removed.
  • so much moisture is removed that the wooden parts 1 only have a moisture content of less than about 30% in the region of the surface. Accordingly, the temperature and / or the cycle time is adjusted by the drying tunnel.
  • a lifting unit 19 is provided, with which two adjacent wooden parts 1 can be lifted out of the receptacles 15, 16 at the same time.
  • the lifting unit 19 can be moved into the area between the two chain strands 10, 1 1 in order to simultaneously lift out two wooden parts 1 lying in adjacent receptacles 15, 16.
  • the lifting unit 19 has two spaced apart holders 20, 21 which are moved into the region between the two chain strands 10, 1 1, when lifted with the lifting unit 19, the two wooden parts 1 simultaneously from the receptacles 15, 16.
  • the two holders 20, 21 are of the same design and each have two about a horizontal axis 22 against each other pivotable support members 23, 24, which are each formed in an L-shape.
  • the two support members 23, 24 are hinged together by the pivot axis 22, which is provided at the free ends of the short legs of the support members 23, 24.
  • the two wooden parts 1 lie with their one longitudinal side 2, 3 on the long legs of the support members 23, 24 on a surface.
  • the lifting unit 19 is initially located in the area below the wooden parts and is raised for lifting in the direction of arrow 29 perpendicular to the transport direction 9 in the area between the chain strands 10, 1 1.
  • the drive device provided for this purpose is not shown in the drawings. This drive device has in addition to a lifting unit and a displacement unit with which the lifting unit 19 between the two chain strands 10, 1 1 can be retracted and raised.
  • FIG. 1 and 2 show the lifting unit 19 on the one hand in the area between the two chain strands 10, 1 1 when lifting the two wooden parts Ie1 and the other in the area outside the feed unit 8.
  • the lifting unit 19 is in this case from the area between the two chain strands 10, 1 1 of the feed unit 8 has been moved out.
  • the lifting unit 19 the two support members 23, 24 opposite to each other about the pivot axis 22 is pivoted. This has the consequence that the two wooden parts 1 are directed with their narrow head sides against each other.
  • the two support parts 23, 24 are adjusted by a (not shown) drive.
  • the support parts 23, 24 are advantageously only pivoted so far that the support sides 3 and 2 of the two wooden parts 1 either horizontally or advantageously with a slightly upward Tilt are arranged.
  • the two wooden parts 1 are transported to a downstream alignment station 30. It has for each piece of wood 1 an adjustable side guide 31, against which the wooden parts 1 lie flat with its base 4.
  • the side guides 31 advantageously have juxtaposed, freely rotatable rollers 31 a (FIGS. 1 and 4) against which the wooden parts 1 lie with their base sides 4.
  • the wooden parts 1 are transported in the transfer in their longitudinal direction. The transport facilities provided for this purpose are not shown for the sake of clarity.
  • the wooden parts 1 lie with their longitudinal sides 2, 3 on supports 25, 26, which are arranged so that the opposite longitudinal sides 2, 3 of the wooden parts 1 lie in a common, advantageously horizontal plane.
  • the wooden parts 1 are secured transversely to their longitudinal direction against slipping off of the supports 25, 26 by means of the side guides 31.
  • the wooden parts 1 are laterally aligned by means of the side guides 31 and transported with at least one longitudinal slide 34 below a gluing unit 35. Since the gluing unit 35 is known, it will not be explained in detail. It has a discharge head 36, from which the Beleimsch exits during the passage of the wooden parts 1. On the discharge head 36 facing longitudinal sides 2 and 3 of the two wooden parts 1, the Beleimstoff is applied during the passage of the wood parts. In the drawings, it is shown by way of example that the covering means is applied linearly to the corresponding longitudinal sides 2, 3 of the wooden parts 1.
  • the gluing agent can also be applied in other ways, for example, surface by spraying, punctiform and the like.
  • the glued wooden parts 1 are transported further in their longitudinal direction to the loading stations 37.
  • two dispensing stations 37 arranged at a distance one behind the other are shown.
  • Each feeding station 37 is followed by a packaging station 38 and a pressing station 39.
  • more than two feeding stations 37 and respectively downstream packaging stations 38 and pressing stations 39 may be provided.
  • the two glued wooden parts 1 located in the feeding station 37 are lifted off with a lifting unit 40 and fed to the packaging station 38 transversely to their longitudinal direction.
  • the lifting unit 40 has two mutually parallel support arms 41, 42 which extend perpendicular to the transport direction 32 of the wooden parts 1.
  • the glued wooden parts 1 lie with their respective non-glued longitudinal side 2, 3 on roller conveyors 43, 44. They are advantageously arranged so that the glued longitudinal sides 2, 3 of the wooden parts 1 lie in a common plane and advantageously horizontally. On the roller tracks 43, 44, the wooden parts 1 are secured transversely to their longitudinal direction against sliding down.
  • the lifting unit 40 is raised in the direction of the arrow 48 and in this case the two glued wooden parts 1 are lifted off the roller conveyors 43, 44 by the supporting arms 41, 42.
  • the wooden parts 1 are fed with the lifting unit 40 transversely to its longitudinal direction in the direction of arrow 45 of the packing station 38. It is provided in the inlet region of the glued wooden parts 1 with a transfer unit 49, with which the lying in the feeding station 37 wooden parts 1 are converted into an upright position.
  • the transfer unit 49 is provided with circular segment-shaped guides 69, which at the same height with preferably the same distance transversely to the Wooden parts 1 are arranged at the task end of the onneierstation 38.
  • the guides 69 have a part-circular guide part 70, at the two ends of which in each case a straight connecting part 71, 72 connects.
  • the two connecting parts 71, 72 include by way of example an angle of approximately 90 °.
  • On the upper connecting parts 71 the wooden parts 1 are in the transfer to the onneierstation 38 with their uneven longitudinal sides.
  • the two connecting parts 71, 72 are non-rotatably mounted with their free ends on a pivot axis 52, so that the guides 69 are pivoted during transport of the wooden parts 1 in the onneierstation 38.
  • the wooden parts 1 are erected from their lying position.
  • the pivot axis 52 is driven by a drive motor 53 which is preferably operated in a controlled manner in order to pivot the guides 69 in such a way that the wooden parts 1 are successively conveyed into the packaging station 38.
  • the glued, horizontally arranged wooden parts 1 are received one by one by the guides 69. As long as the one wood part 1 is conveyed by the guides 69 in the onneierstation 38, the other wood part 1 rests on the support arms 41, 42. After the transfer of a wooden part 1 to the onneierstation 38 pivot the guides 69 to the
  • the support arms 41, 42 are moved in the direction 45, so that the wooden part 1 'enters the pivoting region of the connecting parts 71.
  • the support arms 41, 42 can be moved between the spaced apart connecting parts 71, so that the connecting parts 71 when pivoting the wood part 1 'of the support arms 41, 42 can decrease. Then, the support arms 41, 42 can travel back and from the feed station 37, the next two wooden parts 1, 1 'record.
  • the lower connecting part 72 is not provided, so that the part-circular guides 70 are rotatably connected only via the upper connecting part 71 with the pivot axis 52.
  • the wooden parts 1, 1 ' are mounted with their heads facing each other in the feeding station 37, the wooden parts 1, 1' are conveyed successively into the packing station 38 with the aid of the transfer unit 49, so that the wooden parts alternate with the head side upwards and downwards are arranged below.
  • the wooden parts 1 with their glued longitudinal sides together.
  • the support arms 41, 42 may also be formed by endless conveyors with which the wooden parts 1 are transported from the loading station 37 to the packing station 38.
  • the packaging station 38 has upper and lower endless conveyors 74, 75, between which the wooden parts 1 are inserted standing.
  • the two endless conveyors 74, 75 each have endlessly circulating driven conveying elements 76, 77, preferably plate chains or conveyor belts.
  • Each endless conveyor 74, 75 has two spaced conveying elements 76, 77th
  • the two conveying elements 76, 77 of the two endless conveyors 74, 75 each lie in the region of the ends of the wooden parts 1.
  • the conveying elements 76 of the upper endless conveyor 74 are at the same height as the conveying elements 77 of the lower endless conveyor 75. This ensures that the wooden parts 1 can be reliably held and fed to the pressing station 39.
  • the wooden parts 1 rest on the upper run of the lower conveyor element 77, which is guided on a table 99.
  • the lower strand of the upper conveyor element 76 can be pressed down over the greater part of its length with at least one pressure device 54 (FIG. 5). She has at least one, preferably several minor nander arranged, flat pressure hoses 55 which can be acted upon with compressed air and press on (not shown) plungers. As a result, the lower strand of the upper conveyor elements 76 is pressed down against the wooden parts 1. Also, the lower conveyor elements 77 are each provided with at least one pressure device 54, which is advantageously the same design as the pressure device of the upper conveyor elements 76 and with the upper run of the lower conveyor elements 77 can be pressed up against the underside of the juxtaposed wooden parts 1. They are thus clamped between the two conveying elements 76, 77 so that they are reliably taken by them when driving the conveying elements 76, 77.
  • the conveying elements 76, 77 are guided via drive wheels 78, 79, of which in each case mutually opposite drive wheels are rotatably connected to each other by an axis 80, 81. In each case a pair of wheels of the two endless conveyors 74, 75 is rotatably driven.
  • the conveying elements 76, 77 of the two endless conveyors 74, 75 are driven according to cyclically.
  • the binder already partially cures.
  • At the transition from the illerierstation 38 to the pressing station 39 is at least one height-adjustable transverse stop 82. It is plate-shaped in the embodiment and can be adjusted with at least one lifting unit 83 in the vertical direction. In the exemplary embodiment, the plate-shaped transverse stop 82 extends over most of the length of the wooden parts. 1 Because of this large length of the transverse stop 82, two lifting units 83 are provided for height adjustment, which are advantageous pneumatic or hydraulic lifting cylinder. If the wooden parts 1 are to be transported further from the packaging station 38 into the pressing station 39, the transverse stop 82 is lowered.
  • the pressing station 39 like the packaging station 38, has an upper endless conveyor 84 and a lower endless conveyor 85.
  • the upper endless conveyor 84 has two parallel endless conveying elements 86 (Figure 6) aligned with the endless conveyor elements 76 of the upper endless conveyor 74 of the packaging station 38 lie.
  • the lower endless conveyor 85 has the two endless circulating conveyor elements 87 which are parallel to each other and in alignment with the conveying elements 77 of the lower endless conveyor 75 of the onneierstation 38.
  • the conveying elements 86, 87 are advantageously plate chains, which are guided via drive wheels 88, 89. Each opposing drive wheels 88, 89 are rotatably connected by axes 90, 91 together. In each case an axis 90, 91 is rotatably driven.
  • the conveying elements 86, 87 are advantageously plate chains.
  • the conveying elements 76, 77 and 86, 87 of packaging station 38 and pressing station 39 are aligned with such a small distance one behind the other that the wood parts 1 arrive trouble-free in the pressing station 39.
  • FIGS. 6 and 7 show a series of printing units 92 which are arranged one behind the other at close intervals.
  • Pressing station 39 generally also has a plurality of adjacent rows of printing units 92. In Fig. 9, two such rows can be seen. With the printing units 92, a vertical pressure can be applied to the wooden parts 1.
  • the wooden parts 1 are in the pressing station 39 on a table 93. It is formed by individual, with a small distance one behind the other arranged table tops 93 a, which are opposite to the printing units 92.
  • the table tops 93a as shown in FIG. 9, are also arranged in adjacent rows, wherein in each row the table tops 93a are arranged one behind the other in the transport direction 97 of the wooden parts 1.
  • the printing units 92 are located in the region between the two conveying elements 86 of the upper endless conveyors 84, while the table plates 93a are provided in the region between the two conveying elements 87 of the lower endless conveyors 85.
  • the printing units 92 can each be advantageously adjusted independently of each other in the vertical direction, each with a lifting unit 96.
  • the table tops 93a can each with one
  • Lifting unit 56 are advantageously adjusted independently of each other in height (Fig. 9).
  • clamping devices 60 are provided with which the upper and lower run of the conveying elements 86, 87 can be clamped against the wooden parts 1.
  • the clamping devices 60 are identical, with the clamping devices 60 of the upper conveyor elements 86 and the lower conveyor elements 87 are arranged in mirror image to each other.
  • the tensioning devices 60 have clamping units 61 (FIG. 6) which are spaced one behind the other in the longitudinal direction of the conveying elements 86, 87 and extend parallel to the rows of printing units 92 and table tops 93a.
  • Each tensioning unit 61 has at least one pressure hose 100 (FIG. 9) connected to a pressure medium source. With the pressure hose 100, at least one pressure element 57 can be acted upon.
  • the pressure- Hose 100 and the pressure element 57 are received in a housing 62 which is suitably fixed in the pressing station 39.
  • the housings 62 of the clamping units 61 of a row can be firmly connected to each other.
  • the housings 62 On their side facing the lower or upper strand, the housings 62 have an opening 63 through which the pressure element 57 projects with a projection 57a (FIG. 9).
  • the pressure element 57 abuts the edge 63 of the opening 63 on both sides of the projection 57a.
  • the pressure hose 100 is located between the pressure element 57 and the adjacent housing wall 64 on the side remote from the lower or upper strand of the conveying elements 86, 87 side.
  • the clamping units 61 of the upper and lower chucks 60 face each other. If the pressure hoses 100 are supplied with pressure medium, preferably compressed air, the pressure elements 57 are pressed against the lower run of the upper conveying elements 86 or against the upper run of the lower conveying elements 87. This has the consequence that these strands are pressed against the top and bottom of the juxtaposed wooden parts 1, so that they are transported by means of the conveying elements 86, 87.
  • pressure medium preferably compressed air
  • FIGS. 5 to 8 show the situation that the packaging station 38 and the pressing station 39 are completely filled with the wooden parts 1.
  • the pressing station 39 is opened and the transverse stop 82 is lowered from the path of movement of the wooden parts 1.
  • the wood part carpet 98 pressed in the pressing station 39 (FIG. 7) is clamped by the conveying elements 86, 87, so that it is held in spite of the dissolved printing units 92.
  • the clamping is achieved in that the pressure hoses 100 of the clamping devices 60 are acted upon with pressure medium, so that the conveying elements 86, 87 are pressed in the manner described with their respective strands against the top and bottom of the wooden parts 1.
  • all the clamping units 61 of the clamping devices 60 or only a part of them can be actuated, depending on how the wooden parts 1 can be moved.
  • the clamping force is so high that the wooden parts 1 reliably in the direction of arrow
  • the wooden parts 1 can be clamped or released in sections by means of the printing units 92 in cooperation with the table tops 93a.
  • the individual printing units 92 are pressed down one after the other, whereby the corresponding portion of the juxtaposed wooden parts 1 between the printing units 92 and the table tops 93a is clamped.
  • the table tops 93a can be adjusted continuously with the lifting units 56 for adaptation to the height of the wooden parts 1 in the height direction. In this way, successively the individual printing units 92 are brought to clamping.
  • the clamping force is set higher than the clamping force with which the pressure elements 57 are pressed against the conveying elements 86, 87 for transporting the wooden parts 1.
  • the contact pressure must only be so high that the wooden parts 1 are reliably taken from the conveying elements 86, 87.
  • This stronger pressure causes the glued wooden parts 1, which were previously only loosely against each other, are pressed against the transverse stop 82.
  • Due to the Wedge effect the wood parts are pressed in the sectional clamping by the printing units 92 upwards or downwards on the table 93 and the table tops 93a.
  • the printing units 92 are adjustable to a specific gap with respect to the wooden parts 1 and are moved exactly at height, so that the wooden parts 1 are pressed against the table tops 93 by the pressure units 92 in the section-wise clamping.
  • brake units 95 which are arranged in the transport direction 97 behind the printing units 92, on the already compressed wood parts 1 a brake pressure exerted, which is higher than the clamping force, which is used for aligning the wooden parts 1.
  • the brake units 95 are advantageously provided in each row of pressure units 92.
  • the brake units 95 each have a lifting unit 65, with which the brake unit 95 can be adjusted in height.
  • the brake units 95 can also have pressure hoses which can be acted upon by a pressure medium, preferably compressed air. About the pressure hoses pressure pieces are actuated, which lie under the appropriate pressure on the wooden parts 1.
  • the printing units 92 and the brake units 95 are thus basically the same design as the clamping units 61, with which the conveying elements 86, 87 are pressed against the wooden parts 1.
  • the printing units 92 and the braking units 95 are arranged in the region between the conveying elements 86 of the upper endless conveyor 84. Then the wooden parts 1 can be properly pressed and braked.
  • the brake units 95 press their (not shown) brake pieces with flat support sides firmly against the top of the wooden parts 1, which are firmly clamped in this way between the table tops 93a and the pressure units 92 and the brake units 95.
  • the braking units 95 act as a stop, which prevents unintentional displacement of the wooden parts 1 when aligned in the transport direction 97. Due to the jamming in sections, the wooden parts 1 are aligned horizontally and vertically against each other.
  • the alignment process causes the wooden parts 1 to be displaced in the direction 59 opposite to the transport direction 97.
  • the transverse stop 82 ensures that the wooden parts 1 are supported during the alignment process. The result is that the wooden parts 1 with their glued longitudinal sides 2, 3 are pressed firmly against each other. In conjunction with the force exerted perpendicular to the direction 59 correspondingly high compressive force, the wooden parts 1 are firmly glued together to the wood carpet part 98.
  • the vertical clamping force is partially converted into a horizontal pressing force.
  • the previously possibly existing profile offset which is preferably adjustable, is for the most part pushed out.
  • the next glued wooden parts 1 are introduced into the packaging station 38 in the manner described.
  • the brake units 95 and the pressure units 92 are relieved and pressed with the clamping units 61, the lower run of the upper conveyor elements 86 and the upper run of the lower conveyor elements 87 against the top and bottom of the wooden parts 1 so that the wooden parts. 1 can be transported in the transport direction 97 in the pressing station 39.
  • the transverse stop 82 is lowered, so that as the pressed wood part carpet 98 is pushed out of the pressing station 39, the next Hoiz parts 1 are pushed by the packaging station 38. Then the cycle described begins again.
  • the feed direction 97 behind the pressing station 39 is at least one (not shown) cross-saw, which divides the endless wood carpet 98, for example, in 1 m wide blocks. These blocks are then via (not shown) transverse chains and heavy duty casters and the like. To a Multi-blade saw transported, with which the blocks are divided into small slats.
  • the triangular or trapezoidal wood parts in the pressing station 39 are first aligned in segments by successively loading the glued wooden parts 1 adjacent to each other over the length of the pressing station 39, the forces acting on the wooden parts 1 from above being so great, that the adjacent wooden parts 1 can align against each other. Subsequently, the pressing force required for pressing by means of the printing units 92 is applied vertically to the wooden parts 1. Due to the wedge effect, the vertical clamping force creates a horizontal clamping force that is so high that the adjacent wooden slats are pressed together firmly to the carpet 98. In this pressing operation, all printing units 92 can be actuated simultaneously, so that over the entire pressing length of the pressing station 39, the high pressing force is applied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Architecture (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)

Abstract

L'invention concerne un procédé permettant de fabriquer des blocs à partir de pièces en bois juxtaposées et collées entre elles, ainsi qu'une installation permettant de mettre en œuvre ledit procédé. Ce procédé permet de fabriquer des blocs à partir de pièces en bois (1) juxtaposées et collées entre elles. Celles-ci sont soumises à une pression d'alignement dans la direction de leur surface d'application et à une pression de compression transversalement à leurs surfaces latérales collées. La pression d'alignement est appliquée transversalement aux surfaces latérales collées. Celles-ci sont inclinées par rapport aux surfaces d'application des pièces en bois (1) et transforment la pression d'alignement en pression de compression par rapport à laquelle les surfaces latérales collées sont inclinées. Les pièces en bois (1) peuvent présenter une section transversale triangulaire ou trapézoïdale. L'installation comprend au moins une unité d'amenée ainsi qu'au moins une station de collage pour les pièces en bois (1) et au moins une station de compression (39). En amont de celle-ci est montée au moins une station d'empaquetage (38), au moins une unité de transfert (49) étant prévue à son extrémité de distribution pour les pièces en bois (1). Celle-ci permet d'utiliser les pièces en bois (1) dans la station d'empaquetage (38) de sorte que les pièces en bois successives (1) pivotent autour de leur axe longitudinal pour être placées les unes contre les autres par leurs faces longitudinales obliques.
PCT/EP2017/000332 2016-03-18 2017-03-13 Procédé de fabrication de blocs à partir de pièces en bois juxtaposées et collées entre elles, ainsi qu'installation permettant de mettre en œuvre ledit procédé WO2017157518A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP17711570.6A EP3429811B1 (fr) 2016-03-18 2017-03-13 Procede de production de blocs formes d'assemblage de pieces de bois collees, et dispositif de mise en oeuvre du procede.
SI201730744T SI3429811T1 (sl) 2016-03-18 2017-03-13 Postopek za izdelavo blokov iz nanizanih, med seboj zlepljenih lesenih delov, in postrojenje za izvajanje postopka
DK17711570.6T DK3429811T3 (da) 2016-03-18 2017-03-13 Fremgangsmåde til fremstilling af blokke af trædele der er sammensat mod hinanden og limet sammen såvel som anlæg til gennemførelse af fremgangsmåden

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016003506.4 2016-03-18
DE102016003506.4A DE102016003506A1 (de) 2016-03-18 2016-03-18 Verfahren zur Herstellung von Blöcken aus aneinander gesetzten, miteinander verleimten Holzteilen sowie Anlage zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
WO2017157518A1 true WO2017157518A1 (fr) 2017-09-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/000332 WO2017157518A1 (fr) 2016-03-18 2017-03-13 Procédé de fabrication de blocs à partir de pièces en bois juxtaposées et collées entre elles, ainsi qu'installation permettant de mettre en œuvre ledit procédé

Country Status (5)

Country Link
EP (1) EP3429811B1 (fr)
DE (1) DE102016003506A1 (fr)
DK (1) DK3429811T3 (fr)
SI (1) SI3429811T1 (fr)
WO (1) WO2017157518A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3795315A1 (fr) * 2019-09-19 2021-03-24 Gregor Ledinek Machine automatique pour le collage en largeur de lamelles en bois sur des plaques laminées de dimensions optionnelles et procédé associé

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488759A (en) * 1945-12-22 1949-11-22 Mereen Johnson Machine Company Plywood core machine
DE3216669A1 (de) * 1982-05-04 1983-11-10 Peter 2057 Reinbek Polaczek Verfahren zur verarbeitung von rundholz zu konstruktionsholz bzw. furnieren und vorrichtung zur durchfuehrung des verfahrens
US5293961A (en) * 1992-08-20 1994-03-15 Postema Leonard F Method and apparatus for fabricating arcuate wooden structures
DE29519308U1 (de) * 1995-11-09 1996-02-01 Schilcher Industrieanlagen Und Produktionsanlage zur Herstellung eines aus stab- bzw. brettförmigen Lamellen bestehenden Rohrprofiles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0518246B1 (fr) * 1991-06-14 1999-03-17 Berthold Fries Procédé de fabrication de poutre creuse en bois et les structures de cette poutre obtenues par ce procédé
SE9602426L (sv) * 1996-06-19 1997-12-20 Primwood Ab Förfarande och press för tillverkning av limfogsskiva
DE202012003745U1 (de) * 2012-04-16 2013-07-17 Klaus Jurisch Durchlaufpresse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488759A (en) * 1945-12-22 1949-11-22 Mereen Johnson Machine Company Plywood core machine
DE3216669A1 (de) * 1982-05-04 1983-11-10 Peter 2057 Reinbek Polaczek Verfahren zur verarbeitung von rundholz zu konstruktionsholz bzw. furnieren und vorrichtung zur durchfuehrung des verfahrens
US5293961A (en) * 1992-08-20 1994-03-15 Postema Leonard F Method and apparatus for fabricating arcuate wooden structures
DE29519308U1 (de) * 1995-11-09 1996-02-01 Schilcher Industrieanlagen Und Produktionsanlage zur Herstellung eines aus stab- bzw. brettförmigen Lamellen bestehenden Rohrprofiles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3795315A1 (fr) * 2019-09-19 2021-03-24 Gregor Ledinek Machine automatique pour le collage en largeur de lamelles en bois sur des plaques laminées de dimensions optionnelles et procédé associé
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

Also Published As

Publication number Publication date
DK3429811T3 (da) 2021-05-17
DE102016003506A1 (de) 2017-09-21
EP3429811B1 (fr) 2021-02-17
EP3429811A1 (fr) 2019-01-23
SI3429811T1 (sl) 2021-08-31

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