EP0168299A1 - Automatic belt centering device, especially for an abrasive-belt grinder - Google Patents

Automatic belt centering device, especially for an abrasive-belt grinder Download PDF

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Publication number
EP0168299A1
EP0168299A1 EP85401194A EP85401194A EP0168299A1 EP 0168299 A1 EP0168299 A1 EP 0168299A1 EP 85401194 A EP85401194 A EP 85401194A EP 85401194 A EP85401194 A EP 85401194A EP 0168299 A1 EP0168299 A1 EP 0168299A1
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EP
European Patent Office
Prior art keywords
roller
strip
ramp
support means
belt
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.)
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Application number
EP85401194A
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German (de)
French (fr)
Inventor
Jean-Claude Maret
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.)
Peugeot Outillage Electrique SA
Aciers et Outillage Peugeot SA
Original Assignee
Peugeot Outillage Electrique SA
Aciers et Outillage Peugeot SA
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Publication date
Application filed by Peugeot Outillage Electrique SA, Aciers et Outillage Peugeot SA filed Critical Peugeot Outillage Electrique SA
Publication of EP0168299A1 publication Critical patent/EP0168299A1/en
Withdrawn legal-status Critical Current

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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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/06—Portable grinding machines, e.g. hand-guided; Accessories therefor with abrasive belts, e.g. with endless travelling belts; Accessories therefor

Definitions

  • the present invention relates to belt sanders and relates more particularly to guiding and centering the abrasive belt of a sander of this type.
  • endless abrasive belt sanders comprising a first drive roller actuated by the machine motor, a second roller driven by the first, via the abrasive belt and means for tensioning the abrasive belt by action on the distance between the first roller and the second.
  • the sanders include a device acting on one edge of the belt so as to push it back and cause it to be refocused each time it comes into contact with it.
  • the invention therefore aims to create an automatic centering device which, while being extremely simple in construction, ensures effective centering of the strip.
  • an automatic centering device for an abrasive belt in particular a belt sander, said abrasive belt being mounted on a first drive roller and on a second roller disposed on support means and means for tensioning the belt.
  • the support means of the second roller are mounted oscillating about an axis parallel to the machine working surface, the generator of the second roller furthest from the first roller being inclined by relative to the axis thereof of a determined angle, a ramp carried by said support means or by said second roller being intended to cooperate with the internal face of one of the edges of said strip to ensure its recentering.
  • the belt sander shown in the drawings comprises a frame 1 provided with a handle 2 and containing in its upper part a motor, not shown, the output shaft of which carries a pulley 3 for driving ment by means of a belt 4 of a first cylindrical roller 5 supporting an endless abrasive belt 6.
  • This abrasive belt is further carried by a second roller 7 of convex shape rotatably mounted on a yoke 6 carried by a cylindrical rod 9, this rod being slidably mounted in a housing 10 formed in the lower part 11 of the frame 1 of the machine.
  • the roller 7 can also be of cylindrical shape and possibly be provided with a chamfer for engaging the abrasive belt.
  • the rod 9 is surrounded by a helical spring 12, one end of which bears against a flange 13 provided on the rod 9 and the opposite end of which comes into contact with a stop piece 14 in the form of cup disposed in the bottom of the housing 10 and in which is engaged the free end of the rod 9 in order to promote the oscillating movements of this rod.
  • the surface of the part 14 in contact with the bottom of the housing 10 is in the form of a spherical cap.
  • the axis of the rod 9 carrying the yoke or fork 8 of the curved roller 7 is offset by an angle ⁇ relative to the direction of movement of the abrasive belt 6 towards one of the sides of the yoke 8 which carries, as shown in particular in Fig.3 and 4, an inclined ramp 15 intended to cooperate with the internal face of one of the lateral edges 16 of the abrasive strip 6.
  • the angle of inclination ⁇ causes the strip to move in the direction indicated by arrow F in Fig. 2.
  • the ramp 15 came integrally with a wing of the yoke 8. It can also be formed by an inclined roller mounted to rotate on the yoke.
  • the movement of the strip is counterbalanced by the ramp 15 which comes into contact with the internal part of the strip 6 and causes the orientation of the roller 7 under the effect of the force G exerted by the strip 6 on the ramp 15, d 'an angle A of inclination with respect to the horizontal.
  • This rotation has the effect of returning the strip 6 in the opposite direction to the arrow F.
  • the angle ⁇ which it makes with the direction of movement of the strip again causes the movement of the strip towards the ramp 15 in the direction of the arrow F in FIG. 2 and the process which has just been described begins again, so that the strip remains in equilibrium in a stable position under the effect of two opposite systems.
  • the machine comprises a pusher 17 mounted on a fixed part 18 integral with the frame of the machine, this pusher being provided with a head 19 which can come into contact with the end of the ramp 15 in order to cause the inclination of the yoke 8 of which it is a part and consequently of the roller 7 so as to cause a sufficient inclination of this roller to ensure during its rotation, a lateral ejection of the abrasive belt 6.
  • the variant of the sander according to the invention shown in Fig.5 differs from the machine described with reference to Fig.1 to 4 in that its second roller 7a is of frustoconical shape with a taper directed towards the ramp 15a.
  • the wheel support rod 9A the water no longer being as in the previous case inclined relative to the direction of movement of the abrasive belt 6.
  • the effect of movement of the belt 6 towards the stop 15j L is now obtained by the taper of the frustoconical roller 7a.
  • the variant of the sander according to the invention shown in Fig.6 differs from the machines previously described in that its second roller 20 of convex shape is provided at one of its ends with a flared flange 21 of frustoconical shape which plays the role of the ramp of the previous embodiments.
  • the rim 21 has come integrally with the roller 20. It may also be constituted by a separate piece fixed to the roller 20.
  • It can also be formed by a roller coaxial with the roller 20 and mounted madly relative to the latter on the yoke 8.
  • the rest of the device is similar to those described with reference to Fig. 1 to 5 with the exception that the pusher 17 for tilting the yoke 8 acts directly on a wing of the yoke.
  • This latter variant can also be applied to a tapered roller.
  • the refocusing of the abrasive belt is ensured by extremely simple construction means. Furthermore, it will be noted that the refocusing means constituted by the ramp 15 or the rim 21 are not in contact with the abrasive part of the strip, but with a smooth internal part of the latter, which prevents their premature wear.

Abstract

The abrasive band (6) is mounted on a first entraining roller (5) and on a second roller held on a support (8), and a device (12) tensions the band by changing the distance between the two rollers. The second roller support is mounted to oscillate about an axis parallel to the machine work surface and the generatrix of this roller furthest from the other roller is inclined w.r.t. the axis of the same by a chosen angle (alpha). A ramp (15) carried by the support or the second roller cooperates with one band edge internal face to assure its centring.

Description

La présente invention est relative aux ponceuses à bande et se rapporte plus particulièrement au guidage et au centrage de la bande abrasive d'une ponceuse de ce type.The present invention relates to belt sanders and relates more particularly to guiding and centering the abrasive belt of a sander of this type.

On connait des ponceuses à bande abrasive sans fin comprenant un premier rouleau d'entraînement actionné par le moteur de la machine, un second rouleau entrainé par le premier, par l'intermédiaire de la bande abrasive et des moyens de tension de la bande abrasive par action sur la distance entre le premier rouleau et le second.There are known endless abrasive belt sanders comprising a first drive roller actuated by the machine motor, a second roller driven by the first, via the abrasive belt and means for tensioning the abrasive belt by action on the distance between the first roller and the second.

Afin de maintenir la bande abrasive en position correcte sur les rouleaux, les ponceuses comprennent un dispositif agissant sur un bord de la bande de manière à repousser celle-ci et provoquer son recentrage chaque fois qu'elle entre en contact avec lui.In order to keep the abrasive belt in the correct position on the rollers, the sanders include a device acting on one edge of the belt so as to push it back and cause it to be refocused each time it comes into contact with it.

Les agencements connus du type précité sont coûteux et d'une construction relativement complexe.Known arrangements of the aforementioned type are expensive and of relatively complex construction.

Par ailleurs, en raison de leur venue fréquente en contact avec le bord abrasif de la bande, ils sont sujets à une usure importante.Furthermore, due to their frequent coming into contact with the abrasive edge of the band, they are subject to significant wear.

L'invention vise donc à créer un dispositif de centrage automatique qui tout en étant d'une extrême simplicité de construction, assure un centrage efficace de la bande.The invention therefore aims to create an automatic centering device which, while being extremely simple in construction, ensures effective centering of the strip.

Elle a donc pour objet un dispositif de centrage automatique pour bande abrasive notamment de ponceuse à bande, ladite bande abrasive étant montée sur un premier rouleau d'entrainement et sur un second rouleau disposé sur des moyens de support et des moyens de tension de la bande par action sur la distance entre les premier et second rouleaux, caractérisé en ce que les moyens de support du second rouleau sont montés oscillants autour d'un axe parallèle à la surface de travail de machine, la génératrice du second rouleau la plus éloignée du premier rouleau étant inclinée par rapport à l'axe de celui-ci d'un angle déterminé, une rampe portée par lesdits moyens de support ou par ledit second rouleau étant destinée à coopérer avec la face interne de l'un des bords de ladite bande pour assurer son recentrage.It therefore relates to an automatic centering device for an abrasive belt, in particular a belt sander, said abrasive belt being mounted on a first drive roller and on a second roller disposed on support means and means for tensioning the belt. per action on the dis tance between the first and second rollers, characterized in that the support means of the second roller are mounted oscillating about an axis parallel to the machine working surface, the generator of the second roller furthest from the first roller being inclined by relative to the axis thereof of a determined angle, a ramp carried by said support means or by said second roller being intended to cooperate with the internal face of one of the edges of said strip to ensure its recentering.

L'invention sera mieux comprise à l'aide de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels :

  • - la Fig.1 est une vue schématique en élévation et en coupe d'une ponceuse à bande suivant l'invention;
  • - la Fig.2 est une coupe suivant la ligne 2-2 de la Fig.1;
  • - la Fig.3 est une vue en coupe suivant la ligne 3-3 de la Fig.2;
  • - la Fig.4 est une vue en perspective de la chape du support du rouleau tendeur de la ponceuse suivant l'invention;
  • - la Fig.5 est une coupe analogue à celle de la Fig.2 montrant une variante de réalisation de la ponceuse à bande suivant l'invention; et
  • - la Fig.6 est une coupe analogue à celle de la Fig.3 montrant une autre variante de réalisation de la ponceuse suivant l'invention.
The invention will be better understood with the aid of the description which follows, given solely by way of example and made with reference to the appended drawings, in which:
  • - Fig.1 is a schematic elevational view in section of a belt sander according to the invention;
  • - Fig.2 is a section along line 2-2 of Fig.1;
  • - Fig.3 is a sectional view along line 3-3 of Fig.2;
  • - Fig.4 is a perspective view of the yoke of the support of the tensioning roller of the sander according to the invention;
  • - Fig.5 is a section similar to that of Fig.2 showing an alternative embodiment of the belt sander according to the invention; and
  • - Fig.6 is a section similar to that of Fig.3 showing another alternative embodiment of the sander according to the invention.

La ponceuse à bande représentée aux dessins comporte un bâti 1 pourvu d'une poignée 2 et contenant dans sa partie supérieure un moteur non représenté dont l'arbre de sortie porte une poulie 3 d'entraine- ment par l'intermédiaire d'une courroie 4 d'un premier rouleau cylindrique 5 supportant une bande abrasive sans fin 6. Cette bande abrasive est en outre portée par un second rouleau 7 de forme bombée monté à rotation sur une chape 6 portée par une tige cylindrique 9, cette tige étant montée à coulissement dans un logement 10 ménagé dans la partie inférieure 11 du bâti 1 de la machine. Le rouleau 7 peut également être de forme cylindrique et être éventuellement pourvu d'un chanfrein d'engagement de la bande abrasive.The belt sander shown in the drawings comprises a frame 1 provided with a handle 2 and containing in its upper part a motor, not shown, the output shaft of which carries a pulley 3 for driving ment by means of a belt 4 of a first cylindrical roller 5 supporting an endless abrasive belt 6. This abrasive belt is further carried by a second roller 7 of convex shape rotatably mounted on a yoke 6 carried by a cylindrical rod 9, this rod being slidably mounted in a housing 10 formed in the lower part 11 of the frame 1 of the machine. The roller 7 can also be of cylindrical shape and possibly be provided with a chamfer for engaging the abrasive belt.

A son extrémité opposée à la chape 8, la tige 9 est entourée par un ressort hélicoïdal 12 dont une extrémité porte contre une collerette 13 prévue sur la tige 9 et dont l'extrémité opposée vient en contact avec une pièce de butée 14 en forme de coupelle disposée dans le fond du logement 10 et dans laquelle est engagée l'extrémité libre de la tige 9 en vue de favoriser les mouvements d'oscillation de cette tige. A cet effet, la surface de la pièce 14 en contact avec le fond du logement 10 est en forme de calotte sphérique.At its end opposite to the yoke 8, the rod 9 is surrounded by a helical spring 12, one end of which bears against a flange 13 provided on the rod 9 and the opposite end of which comes into contact with a stop piece 14 in the form of cup disposed in the bottom of the housing 10 and in which is engaged the free end of the rod 9 in order to promote the oscillating movements of this rod. To this end, the surface of the part 14 in contact with the bottom of the housing 10 is in the form of a spherical cap.

L'axe de la tige 9 portant la chape ou fourche 8 du rouleau bombé 7 est décalé d'un angle α par rapport à la direction de déplacement de la bande abrasive 6 vers l'un des côtés de la chape 8 qui porte, comme le montrent notamment les Fig.3 et 4, une rampe inclinée 15 destinée à coopérer avec la face interne de l'un des bords latéraux 16 de la bande abrasive 6. L'angle d'inclinaison α provoque le déplacement de la bande dans le sens indiqué par la flèche F à la Fig.2.The axis of the rod 9 carrying the yoke or fork 8 of the curved roller 7 is offset by an angle α relative to the direction of movement of the abrasive belt 6 towards one of the sides of the yoke 8 which carries, as shown in particular in Fig.3 and 4, an inclined ramp 15 intended to cooperate with the internal face of one of the lateral edges 16 of the abrasive strip 6. The angle of inclination α causes the strip to move in the direction indicated by arrow F in Fig. 2.

La rampe 15 est venue de matière avec une aile de la chape 8. Elle peut également être formée par un galet incliné monté à rotation sur la chape.The ramp 15 came integrally with a wing of the yoke 8. It can also be formed by an inclined roller mounted to rotate on the yoke.

Le déplacement de la bande est contrebalancé par la rampe 15 qui entre en contact avec la partie interne de la bande 6 et provoque l'orientation du rouleau 7 sous l'effet de la force G exercée par la bande 6 sur la rampe 15, d'un angle A d'inclinaison par rapport à l'horizontale. Cette rotation a pour effet de renvoyer la bande 6 dans le sens opposé à la flèche F. Lorsque la bande revient dans l'axe du rouleau 7, l'angle α qu'il fait avec la direction de déplacement de la bande provoque à nouveau le déplacement de la bande vers la rampe 15 dans le sens de la flèche F de la Fig.2 et le processus qui vient d'être décrit recommence, de sorte que la bande reste en équilibre dans une position stable sous l'effet de deux systèmes opposés.The movement of the strip is counterbalanced by the ramp 15 which comes into contact with the internal part of the strip 6 and causes the orientation of the roller 7 under the effect of the force G exerted by the strip 6 on the ramp 15, d 'an angle A of inclination with respect to the horizontal. This rotation has the effect of returning the strip 6 in the opposite direction to the arrow F. When the strip returns in the axis of the roller 7, the angle α which it makes with the direction of movement of the strip again causes the movement of the strip towards the ramp 15 in the direction of the arrow F in FIG. 2 and the process which has just been described begins again, so that the strip remains in equilibrium in a stable position under the effect of two opposite systems.

L'effet précité de l'angle α d'inclinaison du rouleau 7 permet un montage rapide d'une bande par simple engagement d'un bord de la bande sur les deux rouleaux et mise en route de la machine.The aforementioned effect of the angle α of inclination of the roller 7 allows rapid mounting of a strip by simple engagement of an edge of the strip on the two rollers and start-up of the machine.

Afin d'assurer l'éjection de la bande en vue de son remplacement, la machine comporte un poussoir 17 monté sur une partie fixe 18 solidaire du bâti de la machine, ce poussoir étant pourvu d'une tête 19 pouvant venir en contact avec l'extrémité de la rampe 15 afin de provoquer l'inclinaison de la chape 8 dont elle fait partie et par conséquent du rouleau 7 de manière à provoquer une inclinaison suffisante de ce rouleau pour assurer lors de sa mise en rotation, une éjection latérale de la bande abrasive 6.In order to ensure the ejection of the strip for its replacement, the machine comprises a pusher 17 mounted on a fixed part 18 integral with the frame of the machine, this pusher being provided with a head 19 which can come into contact with the end of the ramp 15 in order to cause the inclination of the yoke 8 of which it is a part and consequently of the roller 7 so as to cause a sufficient inclination of this roller to ensure during its rotation, a lateral ejection of the abrasive belt 6.

La variante de la ponceuse suivant l'invention représentée à la Fig.5 diffère de la machine décrite en référence aux Fig.1 à 4 en ce que son second rouleau 7a est de forme tronconique de conicité dirigée vers la rampe 15a. la tige 9A du support du rouleau n'étant plus comme dans le cas précédent inclinée par rapport à la direction de déplacement de la bande abrasive 6. L'effet de déplacement de la bande 6 vers la butée 15jL est maintenant obtenu par la conicité du rouleau tronconique 7a.The variant of the sander according to the invention shown in Fig.5 differs from the machine described with reference to Fig.1 to 4 in that its second roller 7a is of frustoconical shape with a taper directed towards the ramp 15a. the wheel support rod 9A the water no longer being as in the previous case inclined relative to the direction of movement of the abrasive belt 6. The effect of movement of the belt 6 towards the stop 15j L is now obtained by the taper of the frustoconical roller 7a.

La variante de la ponceuse suivant l'invention représentée à la Fig.6 diffère des machines précédemment décrites en ce que son second rouleau 20 de forme bombée est pourvu à l'une de ses extrémités d'un rebord évasé 21 de forme tronconique qui joue le rôle de la rampe des modes de réalisation précédents.The variant of the sander according to the invention shown in Fig.6 differs from the machines previously described in that its second roller 20 of convex shape is provided at one of its ends with a flared flange 21 of frustoconical shape which plays the role of the ramp of the previous embodiments.

Dans l'agencement de la Fig.6, le rebord 21 est venu de matière avec le rouleau 20. Il peut également être constitué par une pièce séparée fixée au rouleau 20.In the arrangement of FIG. 6, the rim 21 has come integrally with the roller 20. It may also be constituted by a separate piece fixed to the roller 20.

Il peut également être formé par une roulette coaxiale au rouleau 20 et montée folle par rapport à celui-ci sur la chape 8.It can also be formed by a roller coaxial with the roller 20 and mounted madly relative to the latter on the yoke 8.

Le reste du dispositif est analogue à ceux décrits en référence aux Fig.1 à 5 à l'exception du fait que le poussoir 17 d'inclinaison de la chape 8 agit directement sur une aile de la chape.The rest of the device is similar to those described with reference to Fig. 1 to 5 with the exception that the pusher 17 for tilting the yoke 8 acts directly on a wing of the yoke.

Cette dernière variante peut également s'appliquer à un rouleau de forme tronconique.This latter variant can also be applied to a tapered roller.

On voit que grâce à l'agencement qui vient d'être décrit, le recentrage de la bande abrasive est assuré par des moyens de construction extrêmement simple. Par ailleurs, on remarquera que les moyens de recentrage constitués par la rampe 15 ou le rebord 21 ne sont pas en contact avec la partie abrasive de la bande, mais avec une partie intérieure lisse de celle-ci, ce qui évite leur usure prématurée.We see that thanks to the arrangement which has just been described, the refocusing of the abrasive belt is ensured by extremely simple construction means. Furthermore, it will be noted that the refocusing means constituted by the ramp 15 or the rim 21 are not in contact with the abrasive part of the strip, but with a smooth internal part of the latter, which prevents their premature wear.

De plus, l'éjection de la bande abrasive est assurée par simple pression sur le doigt 17, opération qui est extrêmement aisée elle aussi.In addition, the ejection of the abrasive strip is ensured by simple pressure on the finger 17, an operation which is also extremely easy.

Claims (9)

1. Dispositif de centrage automatique pour bande abrasive notamment de ponceuse à bande, ladite bande abrasive (6) étant montée sur un premier rouleau d'entrainement (5;5a) et sur un second rouleau (7;7a; 20) disposé sur des moyens de support (8;8a) et des moyens (12) de tension de la bande par action sur la distance entre les premier et second rouleaux, caractérisé en ce que les moyens de support (8;8a) du second rouleau sont montés oscillants autour d'un axe parallèle à la surface de travail de la machine, la génératrice du second rouleau (7;7a;20) la plus éloignée du premier rouleau (5;5a) étant inclinée par rapport à l'axe de celui-ci d'un angle déterminé (0(), une rampe (15;21) portée par lesdits moyens de support (8) ou par ledit second rouleau étant destinée à coopérer avec la face interne de l'un des bords de ladite bande (6) pour assurer son recentrage.1. Automatic centering device for an abrasive belt, in particular a belt sander, said abrasive belt (6) being mounted on a first drive roller (5; 5a) and on a second roller (7; 7a; 20) disposed on support means (8; 8a) and means (12) for tensioning the strip by acting on the distance between the first and second rollers, characterized in that the support means (8; 8a) for the second roller are mounted to oscillate about an axis parallel to the working surface of the machine, the generator of the second roller (7; 7a; 20) furthest from the first roller (5; 5a) being inclined relative to the axis of the latter at a determined angle (0 (), a ramp (15; 21) carried by said support means (8) or by said second roller being intended to cooperate with the internal face of one of the edges of said strip (6 ) to ensure its refocusing. 2. Dispositif suivant la revendication 1, caractérisé en ce que ledit axe d'oscillation desdits moyens de support (8) du second rouleau (7) fait avec la direction de déplacement de la bande un angle (α) et en ce que ledit second rouleau (7;20) est de forme cylindrique ou légèrement bombée, l'inclinaison de l'axe d'oscillation des moyens de support (8) par rapport à la direction de déplacement de la bande déterminant l'inclinaison du second rouleau (7;20) par rapport au premier.2. Device according to claim 1, characterized in that said axis of oscillation of said support means (8) of the second roller (7) makes an angle (α) with the direction of movement of the strip and in that said second roller (7; 20) is cylindrical or slightly curved, the inclination of the axis of oscillation of the support means (8) relative to the direction of movement of the strip determining the inclination of the second roller (7 ; 20) compared to the first. 3. Dispositif suivant la revendication 1, caractérisé en ce que ledit axe d'oscillation desdits moyens de support (8a) du second rouleau (7a) est parallèle à la direction de la bande et en ce que ledit rouleau (7a) est de forme tronconique de conicité dirigée vers ladite rampe (15a) correspondant à l'inclinaison ( α ) de ladite génératrice du second rouleau (7a) la plus éloignée du premier rouleau (5a).3. Device according to claim 1, characterized in that said axis of oscillation of said support means (8a) of the second roller (7a) is parallel to the direction of the strip and in that said roller (7a) is of shape frustoconical taper directed towards said ramp (15a) corresponding to the inclination naison (α) of said generator of the second roller (7a) furthest from the first roller (5a). 4. Dispositif suivant la revendication 1, caractérisé en ce que lesdits moyens de support du second rouleau (7) snrt constitués par une chape (8) dont une des ailes porte ladite rampe (15), ladite chape étant fixée à une tige (9) montée dans un logement (10) du bâti (1). lesdits moyens de tension de la bande (6) étant constitués par un ressort (12) entourant ladite tige (9) et prenant appui d'une part sur une collerette (13) portée par la tige et d'autre part sur le fond dudit logement (10).4. Device according to claim 1, characterized in that said means for supporting the second roller (7) snrt constituted by a yoke (8) one of the wings of which carries said ramp (15), said yoke being fixed to a rod (9 ) mounted in a housing (10) of the frame (1). said belt tensioning means (6) being constituted by a spring (12) surrounding said rod (9) and bearing on the one hand on a flange (13) carried by the rod and on the other hand on the bottom of said housing (10). 5. Dispositif suivant l'une des revendications 1 à 4, caractérisé en ce que ladite rampe (15) est constituée par un galet incliné monté à rotation sur lesdits moyens de support.5. Device according to one of claims 1 to 4, characterized in that said ramp (15) is constituted by an inclined roller rotatably mounted on said support means. 6. Dispositif suivant l'une des revendications 1 à 5, caractérisé en ce qu'il comporte en outre des moyens d'éjection de la bande constitués par un poussoir (17) d'inclinaison des moyens de support (8, 8a) du second rouleau (7:7a;20) autour de leur axe d'oscillation pour assurer lors de sa mise en rotation, l'éjection latérale de la bande abrasive (6).6. Device according to one of claims 1 to 5, characterized in that it further comprises means for ejecting the strip constituted by a pusher (17) for tilting the support means (8, 8a) of the second roller (7: 7a; 20) around their axis of oscillation to ensure during its rotation, the lateral ejection of the abrasive strip (6). 7. Dispositif suivant l'une des revendications 1 à 3, caractérisé en ce que ladite rampe est constituée par un rebord évasé prévu à une extrémité du second rouleau.7. Device according to one of claims 1 to 3, characterized in that said ramp is constituted by a flared rim provided at one end of the second roller. 8. Dispositif suivant l'une des revendications 1 à 3, caractérisé en ce que ladite rampe est constituée par une roulette à surface évasée coaxiale audit second rouleau et montée folle par rapport à celui-ci.8. Device according to one of claims 1 to 3, characterized in that said ramp is constituted by a roller with a flared surface coaxial with said second roller and mounted idly with respect thereto. 9. Ponceuse à bande, caractérisée en ce qu'elle est pourvue d'un dispositif de centrage automatique suivant l'une des revendications 1 à 8.9. Belt sander, characterized in that it is provided with an automatic centering device according to one of claims 1 to 8.
EP85401194A 1984-06-21 1985-06-14 Automatic belt centering device, especially for an abrasive-belt grinder Withdrawn EP0168299A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8409783 1984-06-21
FR8409783A FR2566307B1 (en) 1984-06-21 1984-06-21 AUTOMATIC BELT CENTERING DEVICE, PARTICULARLY FOR ABRASIVE BELT SANDER

Publications (1)

Publication Number Publication Date
EP0168299A1 true EP0168299A1 (en) 1986-01-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401194A Withdrawn EP0168299A1 (en) 1984-06-21 1985-06-14 Automatic belt centering device, especially for an abrasive-belt grinder

Country Status (2)

Country Link
EP (1) EP0168299A1 (en)
FR (1) FR2566307B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823835A1 (en) * 1988-07-14 1990-01-18 Fraunhofer Ges Forschung Machining apparatus
WO1991000163A1 (en) * 1989-06-27 1991-01-10 Robert Bosch Gmbh Hand sander
CN102922392A (en) * 2012-11-29 2013-02-13 无锡富岛精工有限公司 Dual-head belt sander
CN113997182A (en) * 2021-11-26 2022-02-01 江苏准信自动化科技股份有限公司 Three-station automatic polishing system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4847363B2 (en) 2007-02-09 2011-12-28 日東工器株式会社 Endless belt grinding tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191316756A (en) * 1914-01-21 1915-04-15 George William Pepys-Goodchild Improvements in or relating to Grinding or Sandpapering Machines.
DE602436C (en) * 1932-06-16 1934-09-08 C F Scheer & Cie G M B H Belt grinder
FR945719A (en) * 1947-04-11 1949-05-12 Straight belt sander
US3176436A (en) * 1962-01-22 1965-04-06 Wen Products Inc Electric belt sander
US3497336A (en) * 1967-11-01 1970-02-24 Mc Graw Edison Co Belt sander
US3789552A (en) * 1972-09-12 1974-02-05 Singer Co Tracking mechanism for belt sanders

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191316756A (en) * 1914-01-21 1915-04-15 George William Pepys-Goodchild Improvements in or relating to Grinding or Sandpapering Machines.
DE602436C (en) * 1932-06-16 1934-09-08 C F Scheer & Cie G M B H Belt grinder
FR945719A (en) * 1947-04-11 1949-05-12 Straight belt sander
US3176436A (en) * 1962-01-22 1965-04-06 Wen Products Inc Electric belt sander
US3497336A (en) * 1967-11-01 1970-02-24 Mc Graw Edison Co Belt sander
US3789552A (en) * 1972-09-12 1974-02-05 Singer Co Tracking mechanism for belt sanders

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823835A1 (en) * 1988-07-14 1990-01-18 Fraunhofer Ges Forschung Machining apparatus
WO1991000163A1 (en) * 1989-06-27 1991-01-10 Robert Bosch Gmbh Hand sander
CN102922392A (en) * 2012-11-29 2013-02-13 无锡富岛精工有限公司 Dual-head belt sander
CN113997182A (en) * 2021-11-26 2022-02-01 江苏准信自动化科技股份有限公司 Three-station automatic polishing system
CN113997182B (en) * 2021-11-26 2022-12-16 江苏准信自动化科技股份有限公司 Three-station automatic polishing system

Also Published As

Publication number Publication date
FR2566307B1 (en) 1986-10-31
FR2566307A1 (en) 1985-12-27

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