EP2374586A2 - Eléments de réparation du bois dotés de surfaces inférieures profilées - Google Patents

Eléments de réparation du bois dotés de surfaces inférieures profilées Download PDF

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Publication number
EP2374586A2
EP2374586A2 EP11002823A EP11002823A EP2374586A2 EP 2374586 A2 EP2374586 A2 EP 2374586A2 EP 11002823 A EP11002823 A EP 11002823A EP 11002823 A EP11002823 A EP 11002823A EP 2374586 A2 EP2374586 A2 EP 2374586A2
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EP
European Patent Office
Prior art keywords
wood
groove
patch
segment
width
Prior art date
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Granted
Application number
EP11002823A
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German (de)
English (en)
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EP2374586B1 (fr
EP2374586A3 (fr
Inventor
Andreas Lehmann
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G1/00—Machines or devices for removing knots or other irregularities or for filling-up holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
    • 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
    • B27M3/08—Manufacture or reconditioning of specific semi-finished or finished articles of specially shaped wood laths or strips

Definitions

  • the invention relates to a wooden plate with a groove whose opening is a rectangle and in which two opposite walls are flat and parallel to each other and the connecting end walls each consist of a cylinder segment which merges either tangentially in the other cylinder segment or tangentially in a ground plane merges in the middle of the groove, which has the same groove width as the end walls and the groove is closed by a wood patch whose shape is approximately complementary to the groove.
  • the patent DE 42 31 165 describes how the flaw is prepared by a frusto-conical drill and a wood cone is inserted into this depression.
  • a major disadvantage of this method is that the visible on the wood surface patches are basically circular. This is not always visually welcome.
  • An even more important disadvantage is that the method is in principle unsuitable for cracks and other elongated defects.
  • Patent US 1, 639, 082, Penning describes how a saw blade with a V-shaped profile is sunk into the wood piece at the defect and produces an elongated recess having parallel edges and tapering at the front and rear. In this approximately boat-shaped depression 3 pieces of wood are taken and glued, the protruding parts must then be removed again.
  • a major disadvantage of this method is that the wood patches are in principle not exactly positive fit to the introduced into the wood recess. Therefore, the resilience of the bond is not very high.
  • the end faces are cylindrical segment-shaped and connect tangentially to the underside of the wood patch. All surfaces must be formed as exactly as possible complementary to the groove.
  • the manufacturing process is particularly critical because - as explained above - only a particularly high accuracy of fit of the wood patch in the groove ensures that the patched site reaches the same carrying capacity that has the wood piece otherwise. If - as a matter of principle - in the area of the side surface must be dispensed with the largest part of the surface adhesion, so a liability of the woodchip on the ground plane and the cylinder-segment-shaped end walls of the groove all the more important.
  • laminated wood which consists of numerous, glued together, cuboid pieces of wood.
  • the surface of such glued wood consists in principle of numerous, contiguous rectangles.
  • the invention teaches that the two opposite faces of Holzfleickens are cylinder segments whose radius is equal to that of the likewise cylinder-shaped end walls of the groove and the front width of the feeder is smaller than the groove width and the two adjoining the end faces, opposite each other lying side surfaces of the wood patch each consist of at least one cone segment, which has the same central axis as the respective adjacent, cylinder-segment-shaped end faces and the side surfaces protrude before their introduction into the groove on the patch surface around the bulge on the groove width.
  • the bulge of the central area of the wood patch in its upper half should be reasonably so small that the elasticity of the wood patch and the elasticity of - after insertion - adjacent to the wood patches areas of the wood panel near the walls of the groove is so large that the wood patches can be pressed into the groove without damaging the edges and later press the two parts together with the highest possible force.
  • protruding bulge of the wood patch ensures that with flowable adhesive coated wood patches after driving into the groove automatically and without further action there remains and is not pushed out again by the resilient elasticity of the wood patch and / or the walls of the groove.
  • the resulting absolute values for the indentation and the bulge are always smaller for the very common groove widths of about half a centimeter to four and a half centimeters than a millimeter.
  • the invention prefers that the indentation and the bulge have a size of about 0.05 mm to 0.25 mm.
  • the patch surface of the wood patch visible to the outside will be flat and aligned with the board surface of the board after insertion into the groove, in particular in the process of so-called “precosmetics", in which the surface of the "patched” board again all machined to create a continuous plane.
  • the wood patch still projects slightly beyond the plate surface after being introduced into the groove.
  • the protruding part is then removed, so that a continuous plate surface is formed.
  • All the embodiments described above relate to two alternative lengths of wood patches, namely the "short version” and the “long version”.
  • the groove still has a ground plane, which usually runs approximately parallel to the plate surface of the wood panel, but can also be inclined to it.
  • the complementary wood patches has a base surface which rests in the inserted state on the ground plane of the groove and is glued thereto.
  • the only difference in the dimensions of the rectangular base of the wood patch and the rectangular base plane of the groove is that the base is narrower on both sides around the "feeder".
  • the short version as well as the - eg in the FIGS. 1 and 2 shown - long version of the wood patch have on their side surface in the end regions in each case a cone segment. Only the long version has an additional surface between the cone segments, which is aligned angled more than 90 degrees with respect to the base of the wood patch.
  • the flat part of the side surface may also consist of a lower part which - as described above - is inclined with respect to the base surface at an angle of more than 90 degrees. This is followed by a "kink" the upper part of the side surface, which is aligned perpendicular to the base of the wood patch and thus parallel to the walls of the groove.
  • the shape of the two adjacent cone segments is a sub-variant thereof, namely a so-called “truncated cone segment”, ie a cone segment, which has been separated from the "tip” and whose surface is instead aligned with the upper part of the side surface in the separated area.
  • Another possible variant of a wood patch according to the invention has different radii of the respective cylinder segment at its two end faces. But even these two, unequal large cylinder segments each go tangentially into the base surface connecting them.
  • this embodiment is also approximately complementary to the groove, that is, the respective radii of a convex cylinder segment of the wood patch and the concave cylinder segment of the groove pressed thereon are the same.
  • the shape of a wood patch according to the invention must be made with the highest possible accuracy, so that the advantages of the principle according to the invention come to full advantage. Since such wood patches are made in large numbers from comparatively very cost-effective material, the manufacturing costs are essential.
  • the invention proposes a milling tool whose cutting plate has a trapezoidal notch, which is shaped complementarily to the profile of the woodchip. Its smallest width is also the lowest point of the notch and corresponds to the groove width N5 minus both indentations A1, ie N5 - 2 * A1. The largest width of the notch at its upper edge is the groove width plus both bulges A2, so N5 + 2 * A2.
  • the result of such a tool is the following method for producing a wood patch: in the first step, all surfaces of the wood patch projecting later into the groove are milled out of a wood blank in a single machining operation by a milling tool with the aforementioned notch. In this case, the milling tool is guided on a circular arc segment that has the same central axis as the cylinder segment of the respective end faces. With this principle, the task is fulfilled, that only a single operation is required to form the part of the wood patch projecting into the wood surface.
  • the invention proposes that, in the first step of the machining, at least two strip-shaped wood blanks are spaced apart from one another and clamped aligned parallel in the processing machine. Then the milling tool is moved approximately perpendicular to the strips on a wavy line, wherein when immersing the milling tool in a wooden blank, the wavy line is a circular arc with the same central axis as the cylinder segment of the end faces of the wood patch and a radius adapted thereto.
  • a plurality of similar trapezoidal notches can be introduced into the cutting plate of the milling tool so that several wood blanks are processed simultaneously during each milling operation.
  • the wood blanks are then arranged in a surface so that a very large number of wood patches are formed during each machining pass.
  • the wood patches of the invention are primarily used to be inserted into the board surface of wood panels or other wood parts instead of knotholes or other defects.
  • the defect is eliminated in the first step by a groove is milled into the wooden plate by means of a rectangular milling plate with the width of the groove.
  • the inner surface of this groove is coated with adhesive, z. B. from a spray nozzle.
  • a precisely tailored to this groove wood patches is pressed.
  • a very significant advantage of the invention is that the wood patches after pressing no longer needs to be secured by an additional device, but automatically keyed in the groove. Now only a certain work break is required until the adhesive has set. Then a possibly required, final processing of the surface of the wood panel can take place.
  • FIG. 1 shows an isometric view of a wood patch F according to the invention, which is approximately half sunk into the groove N in a wood panel P.
  • a wood patch F according to the invention
  • This section is cut straight at its front edge, wherein the cut surface runs exactly through the transition of the ground plane N4 of the groove N in the tangentially adjacent end face F3.
  • FIG. 1 is easy to see how the groove N is milled into the plate P. All not visible boundary lines of the groove N are marked by dashed lines and thus distinguished from the invisible lines of the wood patch F, which are marked with a dash-dot-dash line.
  • FIG. 1 Because in FIG. 1 the wood patches "glass" is shown, are seen in the representation of several surfaces in a row. The clarity For the sake of brevity, lines have been omitted from the reference numerals to the areas to be designated. Rather, the assignment of the reference numerals to the respective surface can only be derived from their perspective-oriented orientation: The respective reference numerals are shown so that they rest on the respective surface to be marked and are aligned parallel to each two opposite edges.
  • the ground plane N4 of the groove merges tangentially in the end face F3, which is shaped like a cylinder segment.
  • the two walls N2 of the groove N are perpendicular to the ground plane N4. They consist of a flat surface in the middle and two adjoining conical segments whose surface is characterized by straight lines that run towards the - not shown here - tip of the cone.
  • the edge between each cone segment of the walls N2 and the adjacent cylinder-segment-shaped end wall N3 is a circular arc.
  • FIG. 1 is well understood that the groove N has been milled with a circular cylindrical milling tool in the plate surface P1 of the wood panel P.
  • this milling tool has not only been dipped vertically into the plate surface of the wooden plate P, but has also been moved after immersion parallel to the plate surface P1 with the same immersion depth.
  • the ground plane N4 is formed, which runs parallel to the plate surface P 1.
  • FIG. 1 is good to see that in the groove N has a roughly complementary shaped wood patches F has already been half sunk.
  • the wood patch F has been sunk so far that its central area with its trapezoidal profile touches the two upper edges of the opening N1 of the groove N.
  • FIG. 1 it becomes clear that a further pushing in of the wood patch F into the groove N is only possible if the upper area of the wood patch F can be compressed and / or the upper area of the groove N can be pressed slightly apart. The required degree of pushing apart is due to the dimension of the bilateral bulges A2 in FIG. 1 very clearly marked.
  • the actual size of the bulge A2 in relation to the illustrated total length of the wood patch F is considerably smaller than shown in the drawing.
  • quite enormous elevation of the bulge A2 serves only to facilitate understanding of this crucial feature of the invention, namely the partial "excess" of the width of the wood patch.
  • groove width N5 is smaller than the width of the wood patch F on its surface F1. At its patch surface F1, the wood patch F on both sides is wider than the so-called "groove width N5 by the dimension of the so-called" bulge A2 "".
  • the side surfaces F2 of the wood patch F consist only of a plane in its middle part.
  • numerous lines characterize the two conical segments, which form the "constriction" of the end areas.
  • the lines run towards the - not shown here - tip of the respective cone.
  • the conical segments form the transition of the inclined middle parts of the side surfaces F2 to the cylinder-segment-shaped end faces F3 of the wood patch, which are only as narrow as the base surface F4 of the wood patch F.
  • FIG. 1 is also nice to understand that the faces F3 of the wood patch F are cylindrical segment-shaped and convex, ie arched to the outside. Under the rear end face F3, the end wall N3 of the groove can be seen, which is curved with the same radius as the end face F3, but concave, so that when pressing the wood patch F in the groove N, the face F3 rests over the entire surface of the end wall F3 and is glued to it.
  • FIG. 2 the top view is drawn on the same section of a wooden panel P.
  • the section of the wooden plate P is also in FIG. 2 cut straight at the transition of the ground plane N4 of the groove N in the front end wall N3, so that only the rear end wall N3 is shown.
  • the - visible only in the corners to a tiny portion - end wall N3 is provided with a dashed reference number, which is the definition
  • dashed lines denote non-visible surfaces and non-visible edges of the groove N.
  • the ground plane N4 of the groove N is covered by the wood patches F. Therefore, the reference numeral N4 is shown in dashed lines.
  • the lateral boundary edges of the ground plane N4 are shown in dashed lines. This dashed line merges into the side edges of the end wall N3. Since the end wall N3 is cylindrical segment-shaped, it appears in the supervision as a rectangle.
  • the wood patch F is narrower at its underside.
  • the upper edge of the disc surface P1 also gives way slightly, so that the groove N is slightly widened at this point.
  • this extension is in practice only in the range of a few tenths of a millimeter and is therefore barely perceptible to the naked eye, but sufficiently large to provide a firm wedging of the wood patch F in the groove N.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
EP11002823.0A 2010-04-08 2011-04-05 Elément de réparation du bois dotés d'une surface inférieure profilée et plaque de bois avec une rainure et procédé de fabrication de l'élément de réparation Active EP2374586B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010014156 DE102010014156A1 (de) 2010-04-08 2010-04-08 Holzflicken mit umlaufend profilierten unteren Flächen

Publications (3)

Publication Number Publication Date
EP2374586A2 true EP2374586A2 (fr) 2011-10-12
EP2374586A3 EP2374586A3 (fr) 2012-05-02
EP2374586B1 EP2374586B1 (fr) 2015-07-29

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EP11002823.0A Active EP2374586B1 (fr) 2010-04-08 2011-04-05 Elément de réparation du bois dotés d'une surface inférieure profilée et plaque de bois avec une rainure et procédé de fabrication de l'élément de réparation

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EP (1) EP2374586B1 (fr)
DE (1) DE102010014156A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012012706A1 (de) 2012-06-26 2014-01-02 Holz Wieser Gmbh Holzstück zum Ausbessern von Oberflächenfehlern an Bauteilen aus Holz oder Holzwerkstoff
CN108145819A (zh) * 2017-12-26 2018-06-12 重庆羽铠门业有限公司 一种板材加工固定器
CN109049241A (zh) * 2018-08-23 2018-12-21 浙江新远见材料科技股份有限公司 一种地板回收装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1005546A (en) 1908-11-19 1911-10-10 Chehalis Fir Door Company Method of patching woods.
US1639082A (en) 1926-07-19 1927-08-16 Central Door And Lumber Compan Method of patching
DE4231165A1 (de) 1992-09-17 1994-03-24 Bauer Hermann Gmbh Holzplättchen zum Ausflicken von Fehlstellen in Holz und Verbindung eines Holzplättchens mit Holz

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1629595A (en) * 1925-01-22 1927-05-24 Steger Marvin Earl Defect-removing and patch-cutting machine
FR632207A (fr) * 1926-04-06 1928-01-05 Machine à préparer les baguettes pour la confection de cercles en bois fibreux destinés à la tonnellerie et aux emballages en général
US2649869A (en) * 1950-08-29 1953-08-25 M And M Wood Working Company Apparatus for making wood patches
US2674770A (en) * 1950-08-29 1954-04-13 M And M Wood Working Company Wood patch
US3818960A (en) * 1972-10-10 1974-06-25 Bend Millwork Co Manufacture of door jamb and door stop simultaneously from same wood member
DE9014626U1 (de) * 1990-10-22 1991-01-17 Felbauer, Wilhelm, Wolfern Ausbessern von Holzwerkstücken

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1005546A (en) 1908-11-19 1911-10-10 Chehalis Fir Door Company Method of patching woods.
US1639082A (en) 1926-07-19 1927-08-16 Central Door And Lumber Compan Method of patching
DE4231165A1 (de) 1992-09-17 1994-03-24 Bauer Hermann Gmbh Holzplättchen zum Ausflicken von Fehlstellen in Holz und Verbindung eines Holzplättchens mit Holz

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012012706A1 (de) 2012-06-26 2014-01-02 Holz Wieser Gmbh Holzstück zum Ausbessern von Oberflächenfehlern an Bauteilen aus Holz oder Holzwerkstoff
DE102012012706B4 (de) * 2012-06-26 2014-10-09 Holz Wieser Gmbh Holzstück zum Ausbessern von Oberflächenfehlern an Bauteilen aus Holz oder Holzwerkstoff
CN108145819A (zh) * 2017-12-26 2018-06-12 重庆羽铠门业有限公司 一种板材加工固定器
CN109049241A (zh) * 2018-08-23 2018-12-21 浙江新远见材料科技股份有限公司 一种地板回收装置

Also Published As

Publication number Publication date
EP2374586B1 (fr) 2015-07-29
EP2374586A3 (fr) 2012-05-02
DE102010014156A1 (de) 2011-10-13

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