EP3028809B1 - Appareil de lissage automatique des coins arrondis de panneaux plats constitues principalement de bois et/ou d'autres materiaux ou d'autres produits manufactures - Google Patents

Appareil de lissage automatique des coins arrondis de panneaux plats constitues principalement de bois et/ou d'autres materiaux ou d'autres produits manufactures Download PDF

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Publication number
EP3028809B1
EP3028809B1 EP15197127.2A EP15197127A EP3028809B1 EP 3028809 B1 EP3028809 B1 EP 3028809B1 EP 15197127 A EP15197127 A EP 15197127A EP 3028809 B1 EP3028809 B1 EP 3028809B1
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European Patent Office
Prior art keywords
panel
carriage
hook
smoothing
cam
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EP15197127.2A
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German (de)
English (en)
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EP3028809A1 (fr
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Roberto Sorbini
Fabrizio Filippini
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SORBINI Srl
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SORBINI Srl
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/002—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for travelling workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/18—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of wood

Definitions

  • the invention relates to an apparatus for automatically sanding or smoothing the rounded corners of prevalently flat panels made of wood and/or of other material or other manufactured products, during a painting and/or finishing operation of the panels or manufactured products.
  • the smoothing system although still of oscillating type or of any other suitable type, is mounted on a carriage that can slide on guides parallel to the longitudinal side of the panel that has at the ends the corners to be smoothed and the carriage is motorised and means are provided that, to ensure that when the corner of the panel to be sanded reaches a predetermined position with respect to the smoothing means, the means remain aligned precisely with the panel and accompany this latter during feed, at the same speed, to sand the front or rear corner of the longitudinal side of the panel, with the speed required to perform sanding well, even at low speed, but no longer negatively influencing the feed speed of the panel, as the smoothing means follow the panel, after which the means move away from the longitudinal side of the panel and with a reverse movement of said supporting carriage
  • the letter P indicates, in plan view, the panel on which it is necessary to smooth the rounded corners A, the upper edge B of which can in turn be rounded, as shown in Fig. 2 .
  • the corners A which can also be rounded on both sides, are smoothed using abrasive rotating brushes or heads T, of known type, provided with a lateral surface T1 made of consecutive inserts of abrasive material, mounted on a body partly made of pliable- elastic material and the generatrix of which reproduces the profile both of the rectilinear part of the lateral surface and of the curved part of the edge B of the panel P.
  • Figs. 5 and 6 From Figs. 5 and 6 it can be seen that the panel P is arranged on a horizontal plane and is fed, by known conveying means, not shown, with a known and constant speed in the direction indicated by the arrow F, with the longitudinal side L bearing at the ends the rounded corners A (front A' and rear A") mentioned previously, arranged parallel to the direction of feed F, cantilevered from said conveyor means and facing the apparatus M1, which in the representation of Figs. 5 and 6 is responsible for smoothing the front corner in the direction of feed A' of the panel.
  • the apparatus M1 Parallel to the longitudinal side L of the panel P, the apparatus M1 has a linear support structure 1, of adequate length, which if necessary can be arranged for adjustment in the position in height, by means of a guide and vertical slide assembly G1 and in the transverse orientation, also by means of an assembly G2 for rotation of the structure 1 around its longitudinal axis.
  • the assemblies G1 and G2, shown schematically in Fig. 6 are known in machines for machining the rectilinear sides L and the corners A of panels P and therefore will not be described in greater detail herein.
  • a main and horizontal carriage 4 slides with precision, with the interposing of one or more slides 3 with low coefficient of friction, for example recirculating ball slides, and which through a downward facing appendix 5 is connected to the moving part of a rectilinear actuator 6 fixed on the structure 1, parallel to the guide 2 and for example of the type operated by a pneumatic piston cylinder assembly or of other suitable type, by means of which the carriage can be caused to slide first in the direction F of feed of the panels P and then in the opposite direction.
  • the carriage 4 At the start of each work cycle, the carriage 4 is positioned on the end of the guide 2 from which it reaches the front corner A' of the panel P travelling in the direction F, so that the carriage 4, on which the smoothing means described below are mounted, can be controlled to follow the panel to sand its front corner A' and to then allow the smoothing means to disengage from the panel and allow the actuator 6 to reverse its movement, to return the carriage 4 to the cycle start position, to operate on a subsequent panel.
  • a hook 7 is arranged on the side of the carriage 4 facing the panel P ( Fig. 5 ), able to oscillate on an ideal vertical plane, oriented with its tooth 107 facing downward and in the direction F of feed of the panels, press fitted with its stem on a shaft 8 orthogonal to the longitudinal side L of the panel P, supported rotatably by supports 9 fixed on the carriage 4 and on the end of which that projects from the opposite side of the carriage 4 ( Fig.
  • a lever 10 connected to the rod of a pneumatic piston cylinder assembly 11 the body of which is anchored to a support 12 fixed to the carriage 4.
  • the hook 7 can be taken, see also Fig. 3 , from a raised position at rest, shown with a continuous line, in which it does not in any way interfere with the panel P, to a lowered working position, shown with the dashed line and controlled by limit switch means, not shown as if necessary they can be built into the cylinder 11, in which the tooth 107 of the hook 7 is arranged with its vertical surface transverse and on the path of the front side LA of the panel P, to be coupled to the side and ensure that, also with the contribution of the linear actuator 6, the carriage 4 can follow with a precise alignment and with perfect synchronism the panel P being fed in the direction F.
  • the hook 7 is taken to the lowered working position before the side LA of the panel arrives and when the carriage 4 is in the cycle start position, the actuator 6 is already activated for movement in the direction F, with a thrust such as to balance the mass of the carriage 4 and of all the components mounted thereon, so that when the side LA of the panel touches the tooth 107 of the hook 7, the carriage 4 can be made to advance substantially drawn by the panel P, with an at least initially limited contact pressure between the tooth 107 of the hook 7 and the side LA of the panel, so as to prevent even the slightest damage to the front side LA.
  • the hook 7 When the front corner A' of the panel has been sanded, the hook 7 is raised by the cylinder 11, while in correct phase the actuator 6 decreases its thrust and, if necessary, accelerates in the direction F, so that the tooth 107 of the hook can move away from the side LA of the panel without any rubbing on the side. This condition is also guaranteed by the fact that the fulcrum 8 of the hook 7 is positioned above the panel P, so that the upward oscillation of the hook 7 takes place with simultaneous detachment of its tooth 107 from the front side LA of the panel.
  • the actuator 6 is operated to move the carriage 4 in the opposite direction to the feed path F of the panels and to return it to the useful position to start a new work cycle on a subsequent panel.
  • abrasive brush T for sanding the corner A' of the panel is press fitted onto the lower end of the shaft 113 of a vertical spindle 13 fixed with interposing of a support 114 on the distal end of an arm 14 pivoted on a vertical axis 15 and fixed on the arm, with interposing of a support 214, is an electric motor 16, which by means of the belt and toothed pulley drive 17 transmits rotation to the shaft 113 and to the brush T at the correct speed and in the correct direction.
  • the fulcrum 15 of the arm 14 is supported by a support 115 fixed on a secondary carriage 18 that by means of recirculating ball slides 19 slides on at least one rectilinear precision guide 20 fixed on the main carriage 4 and orthogonal to the guide 2 of the main carriage and the secondary carriage 18, by means of a downward facing appendix 21, is connected to the rod of a pneumatic piston cylinder assembly 22 fixed with the body to a support 23 anchored laterally to the main carriage 4. Due to the action of the cylinder 22, the arm 14, with the spindle 13 and with the abrasive brush T, can be taken in a movement perpendicular to the longitudinal side L of the panel P.
  • This movement is used so that a cam follower 24 positioned coaxially and idle on the section of shaft 113 above the abrasive brush T, can read the oblique profile (see below) of a cam 25 positioned above the longitudinal side L of the panel P, which with its longitudinal axis is parallel to the longitudinal side L and which is mounted on a guide and slide structure 26 located on the front of the main carriage 4 facing the panel P and provided with lead screw means 27 to adjust the longitudinal position of the cam 25, to adapt it with precision to the needs of the apparatus and also to allow the progressive wear on the abrasive brush T to be taken up.
  • Fig. 6 it can be seen that laterally to the support 114 of the motor 16 there is fixed a small arm 314, to which there is articulated the rod of a pneumatic piston cylinder assembly 28 articulated with the body to a support 29 fixed on the main carriage 4.
  • the assembly 28 is permanently urged in extension, with the correct pressure values, to maintain the cam follower 24 constantly in contact with the profile of the cam 25.
  • the arm 14 is initially positioned substantially parallel to the longitudinal side L of the panel and the cam follower 24 reads the initial convex section 125 of the profile of the cam 25, to arrange the working surface of the brush T in contact with correct interference with the front side LA of the panel, in front of the corner A' to be sanded and suitably distanced from the hook 7.
  • the follower is taken to read the intermediate section 225 of the profile of the cam 25, which carries the abrasive brush T to sand the whole of the extension of the curved corner A' and to be arranged on the longitudinal side L of the panel, with precise interference guaranteed by the fixed position of the cam 25 with respect to the hook 7 and by the temporary fixed anchoring of the hook to the front side LA of the panel P passing through.
  • the cam follower 24 is taken to read the last section 325 of the profile of the cam 25, with the effect of moving the abrasive brush T away from the longitudinal side L of the panel, so that after or in correct phase with raising of the hook 7, the actuator 6 can be operated to reverse the stroke of the main carriage 4 and to return the apparatus to the cycle start position, behind the sanded panel and in front of a subsequent panel and, when the panel arrives, the cylinder 22 is retracted to return the apparatus to the condition shown in Figs. 5 and 6 , with the cam follower 24 that once again reads the initial section 125 of the profile of the cam 25 and arranges the abrasive brush T, T1 in front of the front side LA of the subsequent panel.
  • the apparatus M1 as described above, and also the apparatus M2 described below, will be controlled by a respective processor 30 as shown schematically in Fig. 7 , which will receive information on the conditions of feed and on the position in space of the front and rear sides of the panel P to be sanded, by the processing unit 31, known and belonging to the conveying system of the panels P.
  • the processor 30 will also receive information 106, 111, 122, 128 from the limit switch means, not shown, associated with the cylinders 11, 22, 28 and with the actuator 6, or associated with the components operated by the cylinders and the processor 30 will also control an electro-pneumatic interface 32 that will operate the various pneumatic piston cylinder assemblies of the apparatus.
  • the processor 30 will also be equipped with a connection 33 for operation of the electric motor 16 and optionally with a connection 34 to detect through optional sensors the thrust that the hook 7, in the lowered position and in the working stroke, exerts on the front LA or rear LP side (see below) of the panel, in order to operate, in a logic and safe way, the actuator 6 that drives the main carriage 4, to ensure and maintain contact between the hook 7 and the panel P, but to prevent even the slightest damage of the surface of the sides LA and LP (see below) touched by the tooth 107 of the hook 7.
  • Optional pressure sensors useful for the object indicated above can be positioned on the tooth 107 of the hook 7 or on parts associated therewith, or can be of the type suitable to detect the degree of torsion to which the shaft 8 is subjected, or can be mounted, in the form of pressure transducers, on the cylinder 11 responsible for lifting and lowering of the hook 7, maintaining this latter in the lowered working position, to oppose the thrust exerted by the actuator means 6 and by the reaction of the panel, which tends to cause upward oscillation of the hook 7.
  • the use of an encoder, not shown, to detect the speed of the working stroke of the carriage 4 and to allow the processing unit 30 to compare and synchronize it with the feed speed of the panels P also falls within the scope of the invention.
  • An apparatus M2 shown in Fig. 8 and 9 , is responsible for smoothing the rear corner A" of the panels P, the apparatus having a structure similar and substantially symmetrical with respect to that of the apparatus M1 described above and differing from this latter due to the fact that the hook 7 and the abrasive brush T will be inserted at the back of the rear side LP of the panel passing through and that the actuator 6 will be arranged to operate the main carriage 4 so as to take the hook 7, when it is lowered, into contact with the rear side LP, with a limited impact and to maintain this contact for the whole of the working stroke of the main carriage 4, with a pressure that is adequate but always limited between the hook 7 and the rear side LP of the panel. Subsequent disengagement of the hook 7 from the rear side LP of the panel is now facilitated as raising of the hook can take place simultaneously to reversal of the motion of the actuator 6.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Claims (10)

  1. Appareil de lissage automatique de coins également arrondis (A) de panneau essentiellement plats (P) réalisés en bois et/ou autre matériau ou d'autres produits manufacturés, durant une opération de peinture et/ou de finition des panneaux ou produits manufacturés qui, par des moyens appropriés, sont alimentés le long d'un trajet rectiligne, dans une direction prédéterminée (F) et à une vitesse qui peut également être élevée et est connue, avec chaque panneau successif (P) qui a, parallèle au trajet, un côté longitudinal (L) avec les coins avant (A') et arrière (A") à lisser faisant face à des moyens de lissage (T), caractérisé en ce que les moyens de lissage (T) sont montés sur un chariot (4) coulissant sur un guide (2) rectiligne et parallèle à la direction (F) d'alimentation des panneaux (P), le chariot (4) étant connecté à des moyens de mouvement alternatif (6) et de manière que, avec l'aide de moyens d'alignement et d'accrochage (7), le chariot (4) peut être commandé pour accompagner le panneau (P) dans son mouvement en avant, en se déplaçant à la même vitesse que celui-ci et avec une position relative prédéterminée et fixe ou un alignement, de manière que les moyens de lissage (T) situés sur le chariot (4) puisse poncer le coin arrondi avant (A') et arrière (A") du panneau (P) et puisse ensuite être éloigné du bord longitudinal (L) du panneau pour permettre le retour du chariot (4) avec les moyens de lissage vers la position de début de cycle, pour être en mesure d'opérer sur un panneau successif, il est prévu que, sur le côté du chariot (4) faisant face au côté longitudinal (L) du panneau (P), soit agencé un crochet (7), formant lesdits moyens d'alignement et d'accrochage, qui est connecté à des moyens de mouvement (11) adaptés pour amener le crochet (7) d'une position relevée au repos, au-dessus du panneau (P) et sans interférer avec celui-ci, à une position abaissée de travail contrôlée par des moyens de contacts de fin de course, dans laquelle la dent (107) du crochet (7) est disposée avec une surface verticale de celle-ci transversale sur le trajet du côté avant (LA) ou du côté arrière (LP) du panneau (P), pour être en mesure d'être couplée au côté et de manière que, également avec la contribution de son actionneur de mouvement linéaire (6), le chariot (4) puisse suivre le panneau (P) qui est alimenté dans la direction (F), avec un alignement précis et un synchronisme parfait.
  2. Appareil selon la revendication 1, caractérisé en ce que ledit chariot (4) et les moyens de lissage (T) situés sur le chariot sont positionnés à un niveau plus élevé que le niveau auquel les panneaux (P) passent à travers, de manière à ne pas être souillé par les poussières produites par le lissage.
  3. Appareil selon la revendication 1, caractérisé en ce que le crochet (7), positionné sur le côté du chariot (4) faisant face au côté longitudinal (L) du panneau (P), est monté par ajustement serré avec sa tige sur un arbre (8), orthogonal audit côté longitudinal (L) du panneau (P), supporté de manière rotative par des supports (9) fixés sur le chariot (4) et sur l'extrémité duquel, qui fait saillie du côté opposé du chariot (4), est monté par ajustement serré un levier (10), connecté à la tige d'un ensemble cylindre-piston pneumatique (11), qui est ancré avec son corps à un support (12) fixé au chariot (4), le tout de manière que, au moyen du cylindre (11), le crochet (7) puisse être amené de ladite position relevée au repos, au-dessus du panneau (P) et sans interférer avec celui-ci, à ladite position abaissée de travail.
  4. Appareil selon la revendication 3, caractérisé en ce que, dans la version (M1) de l'appareil responsable pour le lissage du coin avant (A') de chaque panneau (P), le crochet (7) est orienté de manière à être capable de s'accoupler au côté avant (LA) des panneaux, des moyens étant prévus par le biais desquels le crochet (7) peut être amené dans la position abaissée de travail en face et avant que le côté avant (LA) du panneau n'arrive et des moyens étant également prévus pour garantir que, déjà quand le chariot (4) est dans la position de début de cycle, l'actionneur de mouvement rectiligne correspondant (6) soit activé dans la course de travail avec une poussée susceptible de compenser la masse du chariot (4) et de tous les composants de lissage montés dessus, de manière que, quand le côté avant (LA) du panneau touche la dent (107) du crochet (7), le chariot (4) soit fait avancer sensiblement tiré par le panneau (P), avec une pression de contact limitée mais constante entre la dent (107) du crochet (7) et le côté avant (LA) du panneau, de manière à éviter même le moindre dommage pour le côté avant (LA).
  5. Appareil selon la revendication 3, caractérisé en ce que, dans la version (M2) de l'appareil responsable pour le lissage du coin arrière (A") de chaque panneau (P), ledit crochet (7) est orienté de manière qu'il puisse s'accoupler au côté arrière (LP) des panneaux et en ce qu'il comprend des moyens par le biais desquels le crochet (7) peut être amené dans la position abaissée de travail, derrière le côté arrière (LP) du panneau qui l'a dépassé et des moyens étant également prévus, par le biais desquels l'actionneur de mouvement (6) fait avancer le chariot (4) avec les moyens de lissage (T) de manière à amener la dent (107) du crochet abaissé (7) en contact avec le côté arrière (LP) du panneau, avec un impact qui est limité et de manière à maintenir le contact sur toute la course de travail du chariot principal (4), avec une pression entre le crochet (7) et le côté arrière (LP) du panneau qui garantit lesdites conditions de synchronisme et d'alignement, mais évite même le moindre dommage pour le côté arrière (LP) du panneau.
  6. Appareil selon une des revendications précédentes, caractérisé en ce qu'il comprend des capteurs pour détecter la pression entre la dent (107) du crochet (7) et le côté avant (LA) ou le côté arrière (LP) du panneau (P) durant la course de travail du chariot principal (4) par ses moyens de mouvement (6), les capteurs étant positionnés sur la dent (107) du crochet (7) ou sur des pièces associées à celle-ci, et qui peuvent être de type résistif, piézoélectrique ou similaire, ou adaptés pour détecter le degré de torsion auquel l'arbre de pivotement (8) dudit crochet (7) est soumis, ou être positionnés, sous la forme de transducteurs de pression, sur le cylindre (11) responsable du soulèvement et de l'abaissement du crochet (7).
  7. Appareil selon une des revendications précédentes, caractérisé en ce que chaque appareil (M1, M2) est commandé par un processeur respectif (30) qui reçoit des informations sur les conditions d'alimentation et sur la position dans l'espace des côtés avant (LA) et arrière (LP) du panneau (P) à poncer, par l'unité de traitement (31), connu et appartenant au système de transport des panneaux (P) et qui reçoit également des informations (106, 111, 122, 128) provenant des moyens de contact de fin de course associés aux cylindres pneumatiques ou aux composants de l'appareil (M1, M2) commandé par les cylindres, des moyens étant prévus pour permettre au processeur (30) pour commander une interface électropneumatique (32) qui fournit le fonctionnement logique des divers ensembles cylindre-piston pneumatique de l'appareil, le processeur (30) étant également muni d'une connexion (33) pour le fonctionnement du moteur de rotation des moyens de lissage (T) et avec une connexion optionnelle (34) pour détecter le signal provenant desdits capteurs de la poussée survenant entre le crochet (7) et le côté avant ou arrière (LA, LP) du panneau, de manière à faire fonctionner l'actionneur d'entraînement (6) du chariot principal (4) de manière logique, pour garantir et maintenir le contact entre le crochet (7) et le panneau (P), en évitant simultanément même le moindre dommage pour la surface des côtés (LA, LA) touchée par la dent (107) du crochet (7).
  8. Appareil selon la revendication 1, caractérisé en ce que les moyens de lissage comprennent une brosse abrasive (T) dont la surface de travail (T1) a une génératrice qui reproduit le profil du coin (A', A") à lisser et la brosses est montée par ajustement serré sur l'extrémité inférieure de l'arbre (113) d'une broche verticale (13) fixée sur l'extrémité distale d'un bras (14) pivotant sur un axe vertical (15) et sur le bras est fixé un moteur électrique (16) qui, au moyen d'une transmission (17) fait tourner ledit arbre (113) avec la brosse (T, T1) à la vitesse correcte et dans le sens correct, ledit pivot (15) étant supporté par un support (115) fixé sur un chariot auxiliaire (18) qui, au moyen de glissières (19), coulisse sur au moins un guide rectiligne (20) fixé sur le chariot (4) et orthogonale au guide (2) du chariot (4) et le chariot auxiliaire (18) est connecté à la tige d'un ensemble cylindre-piston pneumatique (22) ancré avec le corps latéralement au chariot (4) et, à cause de l'action duquel, un élément suiveur de came (24), positionné de manière coaxiale et rotative sur la section d'arbre (113) au-dessus de la brosse abrasive (T, T1), peut lire le profil oblique d'une came (25) positionnée au-dessus du côté longitudinal (L) du panneau (P), qui, avec son axe longitudinal, est parallèle au côté longitudinal (L) et qui est monté sur une structure de guidage et de coulissement (26) fixée sur l'avant du chariot principal (4) faisant face au panneau (P) et muni de moyens de vis-mère (27) pour régler la position longitudinale de la came (25), pour l'adapter avec précision aux besoins de l'appareil et également pour permettre de rattraper l'usure progressive sur la brosse abrasive (T, T1).
  9. Appareil selon la revendication 8, caractérisé en ce que ledit élément suiveur de came (24) est constamment poussé sur ladite came (25) par un ensemble cylindrepiston pneumatique (28) qui interagit entre ledit bras (14) et un support (29) ancré au chariot (4), étant prévu que, quand l'appareil (M1, M2) est dans la position de début de cycle de travail, avec le crochet (7) dans la position abaissée pour être accouplé au côté avant (LA) ou arrière (LP) du panneau (P), ledit cylindre (28) ait la tige sortie et ledit cylindre (22) ait la tige rentrée, pour disposer le chariot auxiliaire (18) à l'extrémité de la course vers le flux de panneaux (P), avec le bras (14) sensiblement parallèle au côté longitudinal (L) du panneau et avec l'élément suiveur de came (24) qui lit une section convexe initiale (125) du profil de la came (25) pour disposer la surface de travail de la brosse (T, T1) en contact avec une interférence correcte avec le côté avant ou arrière (LA, LP) du panneau, devant ou derrière le coin (A', A") à poncer et éloigné de manière approprié du crochet d'alignement (7).
  10. Appareil selon une des revendications précédentes, caractérisé en ce que, en raison de l'action de ladite unité de traitement (30), alors que le chariot principal (4) avance avec le panneau (P) sur le côté avant (LA) ou arrière (LP) duquel le crochet (7) est ancré, ledit cylindre (22) soit allongé progressivement pour déplacer le chariot auxiliaire (18) avec le pivot (15) du bras (14) en l'éloignant dudit panneau, de manière que, alors que le cylindre (28) qui maintient l'élément suiveur de came (24) adhérent au profil de la came (25) reste sous pression, l'élément suiveur (24) soit amené à lire une section intermédiaire (225) du profil de la came (25), qui amène la brosse abrasive (T, T1) à poncer la totalité de l'étendue du coin courbe (A', A") du panneau et à être disposé sur le côté longitudinal (L) du panneau, avec une interférence précise garantie par la position fixe de la came (25) par rapport au crochet (7) et par l'ancrage fixe temporaire du crochet sur le côté avant ou arrière (LA, LP) du panneau (P) passant à travers, étant prévu que, durant la dernière section de la course de retour du chariot auxiliaire (18), l'élément suiveur de came (24) soit amené à lire une dernière section (325) du profil de la came (25), avec l'effet d'éloigner la brosse abrasive (T) du côté longitudinal (L) du panneau, de manière que, en phase correcte avec le soulèvement du crochet (7), l'actionneur (6) puisse être commandé facultativement pour modifier sa vitesse et pour inverser la course du chariot principal (4), pour ramener l'appareil (M1, M2) dans la position de début de cycle, devant ou derrière un panneau suivant (P) et, quand le panneau arrive, le cylindre (22) est rétracté de manière que l'élément suiveur de came (24) lise à nouveau la section initiale (125) du profil de la came (25), avec la brosse abrasive (T, T1) positionnée devant ou derrière le côté avant ou arrière (LA, LP) du panneau suivant (P).
EP15197127.2A 2014-12-03 2015-11-30 Appareil de lissage automatique des coins arrondis de panneaux plats constitues principalement de bois et/ou d'autres materiaux ou d'autres produits manufactures Active EP3028809B1 (fr)

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CN109531320A (zh) * 2018-11-26 2019-03-29 鹤山市润昌电子电器有限公司 一种磨角机
CN114536146A (zh) * 2022-02-24 2022-05-27 邵阳市木质天家具有限公司 一种智能化家具生产用板材倒角磨边装置
CN114536147B (zh) * 2022-02-28 2023-01-31 宿迁恒信工艺品有限公司 一种木制品玩具加工用打磨装置
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CN111215997B (zh) * 2020-01-20 2021-08-20 台州市黄岩硕峰工艺品股份有限公司 一种木制玩具持续性自动磨边装置

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