EP0101863B1 - Machine à trancher le bois de placage - Google Patents

Machine à trancher le bois de placage Download PDF

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Publication number
EP0101863B1
EP0101863B1 EP19830106896 EP83106896A EP0101863B1 EP 0101863 B1 EP0101863 B1 EP 0101863B1 EP 19830106896 EP19830106896 EP 19830106896 EP 83106896 A EP83106896 A EP 83106896A EP 0101863 B1 EP0101863 B1 EP 0101863B1
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EP
European Patent Office
Prior art keywords
flitch
mounting surface
dog
dogs
section
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.)
Expired
Application number
EP19830106896
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German (de)
English (en)
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EP0101863A1 (fr
Inventor
Robert D. Brand
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.)
Capital Machine Company Inc
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Capital Machine Company Inc
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Filing date
Publication date
Application filed by Capital Machine Company Inc filed Critical Capital Machine Company Inc
Publication of EP0101863A1 publication Critical patent/EP0101863A1/fr
Application granted granted Critical
Publication of EP0101863B1 publication Critical patent/EP0101863B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/06—Cutting strips from a stationarily- held trunk or piece by a rocking knife carrier, or from rocking trunk or piece by a stationarily-held knife carrier; Veneer- cutting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B29/00—Gripping, clamping or holding devices for the trunk or log in saw mills or sawing machines; Travelling trunk or log carriages

Definitions

  • the present invention relates to a veneer slicer having a reciprocating flitch table providing a mounting surface for a flitch, top and bottom dogs for gripping the flitch and holding the flitch against a central portion of the mounting surface, power means for moving the top and bottom dogs toward the central portion to their gripping positions and away from the central portion to their releasing positions, and a knife and pressure bar assembly movable along a path normal to the . mounting surface, the flitch table being reciproc- able transverse to the path of the knife and pressure bar assembly.
  • Top and bottom dog assemblies for veneer slicers are generally well known (US-A-3680612).
  • the top and bottom dogs grip a conventional flitch and restrain the flitch against a vertical mounting surface on a flitch table.
  • a conventional flitch is a portion of a log that has been split longitudinally to provide a flat mounting surface.
  • a knife and pressure bar assembly is mounted on the veneer slicer facing the mounting surface so that as the flitch table moves downwardly, the fixed knife edge slices a thin sheet of veneer from the flitch.
  • extension dog asemblies are known. The extension dog assemblies enable the veneer slicer to accommodate a generally cylindrical flitch which has not been split longitudinally.
  • Extension dogs customarily grip the flitch at a distance from the mounting surface nearly equal to the radius of the cylindrical flitch, while the top and bottom dogs grip the flitch at a relatively short distance from the mounting surface.
  • a clamping device In connection with a reciprocating saw (AT-B-187296) a clamping device was known which was provided with a third set of dogs intermediate top and bottom dogs for clamping two superposed logs.
  • a veneer slicer 10 embodying the present invention includes a base 12, flitch table supports 14 (only one of which is shown in the drawings), and a flitch table 16.
  • the plurality of transversely spaced-apart supports 14 provide guides such as indicated at 18 upon which the flitch table 16 reciprocates in a generally vertical plane, as indicated by the arrow 20 in Fig. 2.
  • the means by which the flitch table 16 is supported for reciprocation is well known.
  • a conventional flitch 26 is a portion of a generally cylindrical log that has been split longitudinally to provide a flat rear-mounting surface.
  • many logs have a multiplicity of medullary rays extending radially outwardly from the center of the log. The number and pattern of the medullary rays vary, depending upon the type of tree.
  • a plurality of transversely spaced-apart dogs 22 and 24 are mounted on the flitch table 16 for gripping the flitch 26 at relatively short distances from the mounting surface 17 and holding the flitch 26 rigidly against a central portion of the mounting surface 17.
  • bottom dogs 22 and top dogs 24 vertically reciprocate on the flitch table 16 and are driven by hydraulic cylinders 30 and 34, respectively.
  • Other power means may be employed for moving the dogs 22 and 24.
  • the flitch 26 is held against the central portion of the mounting surface 17 so that it extends longitudinally therealong.
  • the bottom dogs 22 are driven upwardly and the top dogs 24 are driven downwardly to engage the flitch 26 and hold the flitch rigidly against the mounting surface 17.
  • the hydraulic cylinders 30 and 34 and their respective piston rods 32 and 36 drive the teeth portions 38 of the dogs 22 and 24 into the flitch 26.
  • the teeth portions 38 are designed to wedge the rear surface of the flitch 26 tightly against the mounting surface 17 of the flitch table 16.
  • the slicer 10 includes a carriage 50 mounted on the base 12. Carriage 50 moves towards and away from the vertical plane of the flitch table 16 as indicated by the arrow 52. Means for moving the carriage 50 in the direction of the arrow 52 is well known and conventional.
  • a knife and pressure bar assembly is mounted on the carriage 50 so that the assembly is movable with the carriage 50 toward and away from the mounting surface 17 of the flitch table 16.
  • a member 56 (commonly called a knife bar) is provided for supporting the knife 58 at a point just below the pressure bar 60.
  • the pressure bar 60 is carried by an assembly 62 (commonly called a pressure cap) which is adjustably movable on the knife bar 56. This arrangement of a knife 58, pressure bar 60, knife bar 56, and pressure cap 62 are well known.
  • the flitch table 16 reciprocates transversely in a generally vertical plane relative to the path of movement of the knife and pressure bar assembly 54.
  • the table 16 moves in the vertical plane between first and second opposite positions, i.e., upper and lower positions.
  • the knife and pressure bar assembly 54 slices a thin sheet of veneer from the flitch 26.
  • the assembly 54 is advanced step-by-step toward the flitch table 16, the distance of each step being approximately equal to the thickness of the slice of veneer being cut and each step being completed before the table 16 begins to move downwardly.
  • Means, now shown, are provided for tilting the assembly 54 rearwardly after each slice to permit the table 16 and the flitch 26 to move to its upper position from its lower position.
  • the flitch table 16 In addition to the bottom and top dog assemblies 22 and 24, the flitch table 16 often includes a plurality of extension dog assemblies (one such assembly being indicated generally by the reference numeral 64 in Fig. 2) mounted on the flitch table 16.
  • the extension dogs are designed to grip a generally cylindrical flitch (not shown), i.e., a log which has not been cut longitudinally, at a distance from the mounting surface 17 of the flitch table 16 greater than the gripping distance of the bottom and top dogs 22 and 24.
  • the extension dog assemblies 64 when not in use, the extension dog assemblies 64 are positioned so that they will not cross the path of the knife and pressure bar assembly 54.
  • Each extension dog assembly 64 includes a bottom extension dog 66, top extension dog 68, and a hydraulic cylinder-piston rod assembly 69 for moving the extension dogs 66 and 68.
  • the hydraulic assembly 69 operates to drive the bottom extension dog 66 and the top extension dog 68 inwardly toward each other to engage the generally cylindrical flitch and hold it against the mounting surface 17 of the flitch table 16.
  • the convention flitch 26 is usually gripped by several pairs of top and bottom dogs 22 and 24 so that the flitch 26 is securely held against the mounting surface 17 of the flitch table 16 as shown in Fig. 1.
  • the flitch 26 could be gripped initially by several extension dog assemblies 64 in addition to the bottom and top dogs 22, 24 until movement of the knife and pressure bar assembly 54 to the right (Fig. 1) places it in close proximity to the vertical plane of movement of the flitch table 16.
  • the extension dogs 66 and 68 would be removed to their respective releasing positions (Fig. 1) and the flitch 26 would remain secured, held only by the bottom and top dogs 22, 24.
  • the position of the knife and pressure bar assembly relative to the reciprocating mounting surface 17 defines a vertical cutting plane 42, represented by the phantom line in Fig. 1.
  • the knife and pressure bar assembly 54 slices a thin sheet of veneer from the flitch 26 in the cutting plane 42.
  • the cutting plane 42 intersects planes 44 and 46 of the medullary rays 48.
  • the surface texture of a sliced veneer sheet is primarily a function of the slope of the planes 44 and 46 of the medullary rays 48 relative to the cutting plane 42.
  • the normal line 43 has no slope.
  • the slope of the planes 44 and 46 will vary in each slicing pass.
  • Each sliced veneer sheet is endowed with a substantially smooth and commercially acceptable surface as long as the slope of a medullary ray 48 plane is negative.
  • Such a negatively sloping plane 46 is represented by a phantom line in Fig. 1.
  • a medullary ray 58 plane has a positive slope (e.g., positively sloping plane 44)
  • the knife edge 58 begins to gouge into the flitch 26, yielding a rough and commercially undesirable veneer surface texture.
  • a flitch 26 split longitudinally in half would yield two supplementary longitudinal flitch sections 78 and 79.
  • the flitch section 78 is longitudinally rotated and mounted on a traditional reciprocating flitch table 16 so that the knife edge 58 first encounters flat surface 81 of the flitch section 78 generally perpendicular to the mounting surface 17, produced by the longitudinal splitting operation, and exits at an arcuate surface 77. It is noteworthy that with the revised mounting position of the flitch section 78, the planes 44 of the medullary rays 48 of the section 78 have a negative slope.
  • the flitch section 79 is mounted on the flitch table 16 in a fashion identical to that of the flitch section 78.
  • the revised mounting position for the flitch section 78 will produce veneer sheets yielding a smooth surface texture since the orientation of the flitch section 78 no longer mirrors the orientation of the flitch section 79, but emulates it.
  • the revised mounting position changes the slope of the planes 44 of the medullary rays 48 of he flitch section 78 prior to slicing from positive to negative and thus eliminates gouging by the knife edge 58.
  • each flitch section 78 and 79 proves to be a time-consuming and labor-intensive chore.
  • the flitch 26 must be longitudinally split, the flitch section 78 mounted and sliced, the unsliced portion of the flitch section 78 that had been gripped by the conventional dogs 22, 24 must be discarded, the flitch section 79 must be mounted, and the process repeated.
  • the primary disadvantage is inefficient use of the veneer slicer 10 since twice as many passes of the reciprocating flitch table 16 are now required in order to slice the same amount of veneer sheets as was heretofore possible using the traditional set-up.
  • the desired surface texture could be obtained at a substantially reduced cost by slicing both flitch sections 78, 79 in one pass of the reciprocating flitch table 16.
  • the flitch table 16 Prior to the present invention, the flitch table 16 had no means for gripping more than one flitch or flitch section at a time.
  • a flitch table constructed according to the present invention permits two flitch sections 78 and 79 to be concurrently gripped and constrained against the mounting surface 17 so that they may be sliced simultaneously.
  • one or more intermediate dog assemblies 70 are mounted on the flitch table 16 and are designed to grip the adjacent inwardly facing surfaces of each of two parallel flitch sections 78, 79 while the opposing outwardly facing surfaces of the two flitch sections 78, 79 are being gripped by the bottom and top dogs 22, 24.
  • the inwardly facing surfaces will include the arcuate surface 77 of the flitch section 78 and the flat surface 81 of the flitch section 79.
  • the intermediate dog assemblies 70 are projectable beyond the plane of the mounting surface 17 and retractable within the flitch table 16. This unique apparatus permits a single flitch table 16 to constrain either one conventional flitch 26 or two flitch sections 78, 79 against the mounting surface 17 during the slicing operation.
  • the intermediate dog asemblies 70 are designed to be incorporated on flitch tables 16 of veneer slicers 10 of the type described above.
  • the number of intermediate dog assemblies 70 utilized on a slicer 10 will depend on the length of the slicer, i.e. the length of flitches which can be cut in the slicer.
  • the intermediate dog assemblies 70 are laterally narrow assemblies which can be inserted into laterally narrow spaces on the flitch table 16, each assembly including a frame portion which is connected to the flitch table.
  • Each intermediate dog assembly 70 includes an intermediate dog 72, mounting means 74, and projecting means 76 for projecting the intermediate dog 72 beyond the plane of the mounting surface 17.
  • the relationship of the intermediate dog assembly 70 to the flitch table 16 is best shown in Fig. 3.
  • the intermediate dog 72 is positioned intermediate the bottom dog 22 and top dog 24 so that the three dogs 22, 72 and 24 cooperate to grip the parallel flitch sections 78,79 concurrently.
  • the projecting means 76 includes a fluidic cylinder drive which will be explained hereinafter.
  • the mounting means 74 includes a support bar 80 transversally mounted on the flitch table 16 so that it is recessed behind the plane of the mounting surface 17.
  • the support bar 80 includes a plurality of longitudinal slots 82 symmetrically disposed about a transverse line passing through the center of the support bar 80.
  • the support bar 80 as attached to the flitch table 16 by a plurality of fastening elements 83 and bearing plates 84.
  • a cavity 86 is provided in the central portion of the support bar 80. As shown in Fig. 3, the cavity 86 opens outwardly toward the plane of the mounting surface 17.
  • the intermediate dog 72 is carried within a frame 88.
  • the frame 88 is formed by the support bar cavity 86 and a pair of L-shaped gibs 90 which partially enframe the outwardly opening support bar cavity 86.
  • the gibs 90 are mounted to the support bar 80 on opposing sides of the cavity 86 so that they are symmetrically disposed about the opening of the cavity 86.
  • the gibs 90 are mounted on the support bar 80 so that the inwardly facing surface 91 of each gib 90 is flush with the cavity wall 92, and the lip portion 93 of each gib 90 extends inwardly beyond the plane of the cavity wall 92, as shown in Fig. 5.
  • Each gib 90 is mounted to the support bar 80 by a plurality of fastening elements 94 threadedly engaging the support bar 80 as indicated at 95.
  • the inwardly facing surface 91 of the gibs 90 cooperate with the coplanar cavity walls 92 to form a channel 96 normal to the plane of the mounting surface 17.
  • the intermediate dog 72 includes a T-shaped dogging block 98 and a pair of dogging plates 100 positioned and designed to engage the adjacent inwardly facing surfaces 81 and 77 of the two flitch sections 78, 79, respectively.
  • the dogging block 98 is carried within the fixed frame 88 so that rectilinear movement within the channel 96 is possible. Movement of the dogging block 98 in channel 96 is limited by the inwardly protruding lips 93 of the gibs 90 and the bottom wall 102 of the support bar cavity 86.
  • the intermediate dog assembly 70 is mounted on the flitch table 16 and the depth of channel 96 selected so that the intermediate dog 72 is projectable beyond the plane of the mounting surface 17 and retractable within the flitch table 16 in response to movement of the dogging block 98.
  • Each dogging plate 100 is orthogonally mounted to a portion of the dogging block 98 which is both extendable beyond the plane of the mounting surface 17 and retractable within the flitch table 16.
  • Each dogging plate 100 includes a mounting portion 104 and a jaw portion 106.
  • the mounting portions 104 are secured to the dogging block 98 by a plurality of fastening elements (not shown) so that the jaw portions 106 extend in opposing directions.
  • the dogging block 98 includes several features which facilitate its movement within the channel 96.
  • the dogging block 98 includes a cylinder bore 108 opening inwardly with respect to the plane of the mounting surface 17.
  • the cylinder bore 108 is designed so that it may receive a floating piston 110 having a plurality of peripherally extending sealing rings 112.
  • the engagement of the piston 110 and the cylinder bore 108 forms a chamber 114 into which a pressurized fluid (not shown) may be injected through an orifice 116 in the piston 110.
  • the introduction of the pressurized fluid will fill the spacer within the chamber 114, causing the dogging block 98 to move outwardly with respect to the plane of the mounting surface 17 to its projected position, as represented by the solid lines in Fig. 5.
  • the pressurized fluid may be stored in a convenient location 118 near the veneer slicer 10 and may be controlled by a suitable fluidic control system 120 as generally indicated by the schematic diagram in Fig. 3.
  • the purpose of the cylinder drive is to project the intermediate dog 72 beyond the plane of the mounting surface 17 to its projected position.
  • the reciprocating means 107 also includes biasing means 122 for biasing the intermediate dog 72 toward its retracted position within the flitch table 16, as represented by the broken lines in Fig. 5.
  • the dogging block 98 includes a plurality of fixture bores 124 symmetrically disposed about the longitudinal axis of the cylinder bore 108.
  • the fixture bores 124 open outwardly with respect to the mounting surface 17.
  • the openings of the fixture bores 124 are capped by the mounting portions 104 of the dogging plates 100.
  • the dogging block 98 includes a plurality of cylindrical holes 126 in its bottom surface 125 equal in number to the number of fixture bores 124.
  • the cylindrical holes 126 are concentrically aligned with the fixture bores 124 and open toward the bottom wall 102 of the support bar cavity 86.
  • the diameter of the cylindrical hole 126 is smaller than the diameter of the fixture bore 124 so that the threaded portion of a bolt 128 may extend through the cylindrical hole 126 and the head of the unthreaded portion may be seated in the fixture bore 124.
  • the biasing means 122 includes compression springs 130 interposed between the heads of the bolts 128 and the bottoms of the fixture bores 124.
  • the bolts 128 extend through the cylindrical hole 126 and threadedly engage the support bar 80.
  • the springs 130 are designed so that the intermediate dog 72 is seated on the bottom wall 102 of the support bar cavity 86 when the springs 130 are fully extended. Thus, springs 130 bias the intermediate dog toward its retracted position within the flitch table 16.
  • the preferred reciprocating means-107 employs a fluidic piston-cylinder drive to project the intermediate dog 72 beyond the plane of the mounting surface 17 (as depicted in Fig. 5).
  • the intermediate dog 72 is biased against the bottom wall 102 of the support bar cavity 26 so that the dogging plates 100 are retracted within the flitch table 16.
  • Each flitch section 78 and 79 is independently mounted on the mounting surface 17 using the preferred mounting procedure.
  • Operation of the fluidic control system 120 activates movement of the intermediate dogs 72, bottom dogs 22, and top dogs 24.
  • the intermediate dogs 72 are moved to their projected positions by operating control means 140.
  • Some of the bottom dogs 22 are moved to their gripping positions by operating control means 142.
  • Some of the top dogs 24 are moved to their gripping positions by operating control means 144.
  • the remaining bottom dogs 22 and top dogs 24 are simultaneously moved to their respective gripping positions by activating control means 146.
  • the first step in the preferred mounting procedure is to move the dogging plates 100 beyond the plane of the mounting surface 17 to their projected positions by operating the control means 140.
  • the second step is to mount the flitch section 78 in its rotated orientation on a lower portion of the mounting surface 17.
  • the flat mounting surface of flitch section 78 is placed against the mounting surface 17 so that the dogging plates 100 engage the longitudinal arcuate surface 77 of the flitch section 78.
  • Some of the bottom dogs 22 are then activated by the control means 142 so that they grip the longitudinal flat surface 81 and constrain flitch section 78 against the mounting surface 17.
  • the third step is to mount the flitch section 79 on an upper portion of the mounting surface 17.
  • the flat mounting surface of flitch section 79 is placed against the mounting surface 17 so that the dogging plates 100 engage the longitudinal flat surface 81 of the flitch section 79.
  • top dogs 24 are then activated by the control means 144 so that they grip the longitudinal arcuate surface 77 and constrain flitch section 79 against the mounting surface 17. Finally, the remaining bottom dogs 22 and top dogs 24 are simultaneously activated by control means 146 so that the bottom dogs 22 grip the longitudinal flat surface 81 of flitch section 78 and the top dogs 24 grip the longitudinal arcuate surface 77 of flitch section 79.
  • Sequentially mounting and gripping the flitch sections 78 and 79 prior to slicing both sections is the preferred manner of operation in the present invention. However, this preferred procedure does not preempt the use of alternative operating procedures.
  • the flitch section 79 could be mounted before the flitch section 78 is mounted or both flitch sections 78 and 79 could be mounted and gripped simultaneously.
  • the reciprocating means could be proportioned and designed so that the intermediate dog is normally spring-biased beyond the plane of the mounting surface. This configuration would remove the need for a fluidic piston-cylinder drive.
  • the flitch table 16 would be set up to accommodate two flitch sections. However if the veneer cutter elected to slice a conventional flitch 26, the springs would allow the intermediate dog 72 to retract within the flitch table under the weight of the flitch 26.
  • the new intermediate dogs add a significant measure of flexibility to a standard flitch table.
  • Surface texture quality of sliced veneer sheets can be markedly improved with minimal effort following the incorporation of this unique invention into a conventional veneer slicer.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Wood Veneers (AREA)

Claims (7)

1. Machine à trancher le bois de placage, comportant une table à déplacement alternatif de support de flèche de bois (16) fournissant une surface de monture (17) pour une flèche de bois, des crampons supérieurs et inférieurs (22, 24) destinés à bloquer la flèche de bois et à la maintenir contre la partie centrale de la surface de monture, des moyens d'entraînement destinés à rapprocher les crampons supérieur et inférieur de la partie centrale pour les amener en position de blocage, et à les écarter de la partie centrale pour les amener en position de libération, et un ensemble de couteau (58) et de barre de pression (60) pouvant se déplacer le long d'une trajectoire perpendiculaire à la surface de monture, la table de support de flèche de bois pouvant aller et venir transversalement par rapport à la trajectoire de l'ensemble de couteau et de barre de pression, machine à trancher le bois de placage caractérisée en ce qu'elle comprend un crampon (72) placé dans une position intermédiaire entre les crampons supérieur et inférieur pour bloquer et maintenir simultanément une première section de flèche de bois (78) et une seconde section de flèche de bois (79) contre la surface de monture (17), des moyens de monture (74) permettant de monter le crampon intermédiaire sur la table de support de flèche de bois à proximité de la partie centrale de la surface de monture, les crampons supérieur et intermédiaire bloquant les parties opposées de la première section de flèche de bois, et les crampons inférieur et intermédiaire bloquant les parties opposées de la seconde section de flèche de bois, et des moyens de projection (67) destinés à faire sortir le crampon intermédiaire d'une position rétractée dans la table de support de flèche de bois, pour l'amener dans une position en saillie dépassant au-delà du plan de la surface de monture.
2. Machine à trancher le bois de placage selon la revendication 1, caractérisé en ce que les saillies (67) comprennent des moyens de ressort (130) poussant élastiquement le crampon intermédiaire (72) vers l'une au moins de ces positions en saillie ou rétractée.
3. Machine à trancher le bois de placage selon la revendication 2, caractérisé en ce que les saillies (76) comprennent un mécanisme de piston et cylindre (110, 114) destiné à faire sortir le crampon intermédiaire (72) dans sa position en saillie, et des moyens de ressorts (130) poussant élastiquement le crampon intermédiaire vers sa position rétractée.
4. Machine à trancher le bois de placage selon la revendication 1, caractérisée en ce que les moyens de monture (74) comprennent une barre de support (80) montée sur la table de support de flèche de bois (16), la barre de support comprenant une cavité (86) destinée à recevoir le crampon intermédiaire (72) de façon que ce crampon intermédiaire soit libre de se déplacer suivant une trajectoire perpendiculaire au plan de la surface de monture (17), un châssis (88) limitant un mouvement du crampon intermédiaire, et des moyens (94) permettant de fixer le châssis à la barre de support.
5. Machine à trancher le bois de placage selon la revendication 1, caractérisée en ce que le crampon intermédiaire (72) comporte un bloc de blocage (98) et une paire de mâchoires (106) montées sur le bloc de blocage pour venir en contact avec les surfaces adjacentes tournées vers l'intérieur des sections de flèche de bois (78, 79).
6. Procédé de montage d'une flèche de bois sur une machine à trancher le bois de placage du type comprenant une table à déplacement alternatif de support de flèche de bois (16) formant une surface de de monture (17) pour une flèche de bois, un ensemble de couteau (58) et de barre de pression (60) pouvant se déplacer le long d'une trajectoire perpendiculaire à la surface de monture, et un premier et second crampon (22, 24) destinés à bloquer la flèche de bois et à la maintenir contre la partie centrale de la surface de monture, procédé caractérisé en ce qu'il comprend les différentes étapes consistant à placer une première section de flèche de bois (78) sur une surface de monture (17) entre le premier crampon et un troisième crampon (72) placé dans une position intermédiaire entre le premier et second crampon, à placer une second section de flèche de bois (79) sur la surface de monture entre le second crampon et le troisième crampon, et à déplacer le premier et second crampon vers la partie centrale de la surface de monture, de façon que le premier et le troisième crampon viennent bloquer les parties opposées de la première section de flèche de bois, et que le second et troisième crampon viennent bloquer les parties opposées de la seconde section de la flèche de bois.
7. Procédé selon la revendication 6, caractérisé en ce que le premier crampon se déplace vers la partie centrale de la surface de monture pour bloquer la première section de pièce de bois avant que la seconde section de pièce de bois soit placée sur la surface de monture, et en ce que le second crampon se déplace vers la partie centrale de la surface de monture après que la seconde section de flèche de bois ait été placée sur la surface de monture, pour bloquer cette seconde section de flèche de bois.
EP19830106896 1982-07-30 1983-07-14 Machine à trancher le bois de placage Expired EP0101863B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40346982A 1982-07-30 1982-07-30
US403469 1982-07-30

Publications (2)

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EP0101863A1 EP0101863A1 (fr) 1984-03-07
EP0101863B1 true EP0101863B1 (fr) 1986-09-17

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EP19830106896 Expired EP0101863B1 (fr) 1982-07-30 1983-07-14 Machine à trancher le bois de placage

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EP (1) EP0101863B1 (fr)
CA (1) CA1204985A (fr)
DE (1) DE3366282D1 (fr)
ES (1) ES524606A0 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5979524A (en) * 1997-06-27 1999-11-09 Danzer North America, Inc. Veneer slicer
US6102090A (en) 1998-08-20 2000-08-15 Danzer North America, Inc. Flitch table mounting
BR0307362A (pt) 2002-02-04 2006-12-26 Danzer North America Inc cortador de contra-placa, e, método de conversão de um bloco da tora em folhas de contra-placa

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE913696C (de) * 1952-01-01 1954-06-18 Heidenreich & Harbeck Gmbh Furniermessermaschine
AT187296B (de) * 1954-11-03 1956-10-25 Fritz Koelbl Einspannvorrichtung bei Gattersägen zum Festhalten von Baumstämmen
US3680612A (en) * 1971-03-17 1972-08-01 Capital Machine Co Extension dog system for veneer slicer
US3905408A (en) * 1974-03-29 1975-09-16 Capital Machine Co Vacuum flitch table for veneer slicer

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Publication number Publication date
DE3366282D1 (en) 1986-10-23
EP0101863A1 (fr) 1984-03-07
ES8501281A1 (es) 1984-11-16
ES524606A0 (es) 1984-11-16
CA1204985A (fr) 1986-05-27

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