EP4011551B1 - Une ponceuse pour le ponçage/la finition/le brossage de composants en bois, en métal ou similaires - Google Patents

Une ponceuse pour le ponçage/la finition/le brossage de composants en bois, en métal ou similaires Download PDF

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Publication number
EP4011551B1
EP4011551B1 EP21213637.8A EP21213637A EP4011551B1 EP 4011551 B1 EP4011551 B1 EP 4011551B1 EP 21213637 A EP21213637 A EP 21213637A EP 4011551 B1 EP4011551 B1 EP 4011551B1
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EP
European Patent Office
Prior art keywords
sanding
component
machine according
relative
conveyor assembly
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EP21213637.8A
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German (de)
English (en)
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EP4011551A1 (fr
Inventor
Fabio Balducci
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Biesse SpA
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Biesse SpA
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Classifications

    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/12—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0084—Other grinding machines or devices the grinding wheel support being angularly adjustable
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/002—Grinding heads
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
    • B24B7/26—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass for simultaneously grinding or polishing opposite faces of continuously travelling sheets or bands
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/28—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding wood

Definitions

  • the invention relates to a sanding machine for sanding/finishing/brushing components made of wood, metal or the like.
  • the invention especially finds advantageous application in the sanding/finishing/brushing of bars with an elongated shape used as beams or columns in the building industry, to which explicit reference will be made in the description below without because of this loosing in generality.
  • a sanding machine which comprises a base; at least one sanding unit; and a transport device defining a horizontal support surface for at least one bar.
  • the bars are moved by the transport device in a first direction, which is parallel to the support surface and perpendicular to the front and rear end faces, and along a path extending through the sanding unit.
  • the sanding unit comprises two conveyor assemblies, which are mounted on opposite sides of the path in a second direction, which is parallel to the support surface and transverse to the first direction, define a feeding channel feeding the bar through the sanding unit and are movable relative to one another in the second direction depending on a width of the bar measured parallel to the second direction.
  • Each conveyor assembly normally comprises a plurality of feeding rollers, which are aligned with one another in the first direction and are motor-driven so as to rotate around respective rotation axes, which are substantially perpendicular to the bar support surface.
  • At least one conveyor assembly is provided with a sanding tool, for example an abrasive belt or a brush, which extends between two adjacent feeding rollers and is configured to sand/finish a corresponding side face of the bar.
  • a sanding tool for example an abrasive belt or a brush, which extends between two adjacent feeding rollers and is configured to sand/finish a corresponding side face of the bar.
  • the object of the invention is to provide a sanding machine for sanding/finishing/brushing components made of wood, metal or the like, which does not suffer from the drawbacks described above and is simple and economic to be manufactured.
  • a sanding machine for sanding/finishing/brushing components made of wood, metal or the like according to the appended claims.
  • number 1 indicates, as a whole, a sanding machine for sanding/finishing/brushing components 2 made of wood, metal or the like, especially beams or columns for the building industry.
  • Each component 2 has an elongated shape and is delimited by an upper face 3 and by a lower face 4, which are substantially parallel to one another, by two end faces 5, which are substantially parallel to one another and perpendicular to the faces 3, and by two side faces 6, which are parallel to one another and perpendicular to the faces 3.
  • the sanding machine 1 comprises a roller conveyor device 7, which extends in a horizontal direction 8 and comprises, in turn, a plurality of motor-driven transport rollers 9, which define a support surface A for the components 2 and are mounted so as to rotate around respective rotates axes 10, which are parallel to one another and to a horizontal direction 11, which is transverse to the direction 8.
  • the components 2 are moved by the device 7 along a path P extending through a plurality of operating units, especially two operating units 12, 13, which are mounted between the rollers 9 and are each designed to process a relative face 6.
  • the sanding machine 1 is provided with a limit stop device 14, which is arranged upstream of the unit 12, extends in the direction 8 and allows the components 2 to be correctly positioned in the direction 11.
  • the unit 12 comprises an elongated frame 15, which extends in the direction 11 and supports an intermediate slide 16, which extends in the direction 11 and is coupled to the frame 15 in a sliding manner through the interposition of a shock absorber device 17 ( figure 6 ) so as to make, relative to the frame 15, straight movements in the direction 11.
  • the device 17 comprises, in particular, a pneumatic cylinder 18, which is fixed to the frame 15 parallel to the direction 11, a pneumatic cylinder 19, which is fixed to the slide 16 parallel to the direction 11 and faces the cylinder 18, and an output rod 20, which is coupled to the cylinders 18, 19 in a sliding manner.
  • the slide 16 supports two conveyor assemblies 21, 22, which are arranged on opposite sides of the path P in the direction 11 and define a feeding channel 23 feeding the components 2 through the unit 12.
  • the assembly 21 is arranged on the side of the path P opposite the one of the device 14 and comprises a horizontal slide 24 with a substantially rectangular shape, which is mounted on the slide 16 is coupled to the slide 16 in a sliding manner and is further coupled, by means of a screw-nut screw coupling, to a screw 25 of a relative operating device 26 ( figure 7 ), a motor 27 thereof causing the rotation of the screw 25 in order to cause the slide 24 to make straight movements along the slide 16 in the direction 11.
  • the device 26 further comprises a nut screw 28, which is coupled to the screw 25 and is engaged by the slide 24 in a sliding manner through the interposition of a shock absorber device 29 ( figure 7 ) comprising two pneumatic cylinders 30, which are mounted between the slide 24 and the nut screw 28 parallel to the direction 11.
  • the assembly 21 is further provided with a rotary platform 31, which is coupled to the slide 24 in a rotary manner so as to rotate, relative to the slide 24, around a fulcrum axis 32, which is parallel to a vertical direction 33 orthogonal to the directions 8 and 11 and is obtained at the entrance of the components 2 into the unit 12 and into the channel 23.
  • the platform 31 is connected to the slide 24 through the interposition, in particular, of a shock absorber device 34 and of three coupling devices 35.
  • the device 34 comprises, in particular, a pneumatic cylinder 36, which is connected to the slide 24, a pneumatic cylinder 37, which is connected to the platform 31 and faces the cylinder 36, and an output rod 38, which is coupled to the two cylinders 36, 37 in a sliding manner.
  • Each device 35 comprises a guide 39, which is fixed to the slide 24 parallel to the direction 11, a recirculating ball slider 40, which is coupled to the guide 39 in a sliding manner, a guide 41, which is obtained on the slider 40 parallel to the direction 8, a recirculating ball slider 42, which is coupled to the guide 41 in a sliding manner, and a rolling bearing 43, which is interposed between the platform 31 and the slider 42 so as to allow the platform 31 and the slider 42 to rotate relative to one another around a rotation axis 44, which is parallel to the direction 33.
  • the platform 31 supports a plurality of motor-driven conveyor rollers 45 (in this case, five rollers 45), which are aligned with one another, face the path P and laterally delimit the channel 23.
  • One of the rollers 45 (hereinafter indicated with 45a) is an input roller mounted so as to rotate around the axis 32 and the other rollers 45 (hereinafter indicated with 45b) are mounted so as to rotate around respective rotation axes 46, which are parallel to one another and to the direction 33.
  • the assembly 22 is integral to the slide 16 in the direction 11 and is mounted downstream of the limit stop device 14 in the direction 8.
  • the assembly 22 is provided with a rotary platform 47, which is coupled to the slide 16 in a rotary manner so as to rotate, relative to the slide 16, around a fulcrum axis 48, which is parallel to the direction 33 and is obtained at the entrance of the components 2 into the unit 12 and into the channel 23.
  • the platform 47 is connected to the slide 16 through the interposition, in particular, of a shock absorber device 49, which is completely equivalent to the device 34, and of four coupling devices 50, which are completely equivalent to the devices 35.
  • the platform 47 supports a plurality of motor-driven conveyor rollers 51 (in this case, three rollers 51), which are aligned with one another, face the path P and laterally delimit the channel 23.
  • One of the rollers 51 (hereinafter indicated with 51a) is an input roller mounted so as to rotate around the axis 48 and the other rollers 51 (hereinafter indicated with 51b) are mounted so as to rotate around respective rotation axes 52, which are parallel to the direction 33.
  • the assembly 22 is further provided with a sanding device 53 comprising three pulleys 54, which are mounted on the platform 47 with a triangle-like arrangement and are coupled to the platform 47 so as to rotate, relative to the platform 47, around respective rotation axes 55, which are parallel to one another and to the direction 33.
  • a sanding device 53 comprising three pulleys 54, which are mounted on the platform 47 with a triangle-like arrangement and are coupled to the platform 47 so as to rotate, relative to the platform 47, around respective rotation axes 55, which are parallel to one another and to the direction 33.
  • Two pulleys 54 are motor-driven drive rollers, which are mounted between the rollers 51b and are moved around the relative axes 55 by an operating device 56 comprising an electric motor 57, which is mounted on the platform 47, and a belt transmission 58, which is interposed between the motor 57 and the pulleys 54a.
  • the third pulley 54 (hereinafter indicated with 54b) is a stretching roller, which is coupled to the platform 47 in a sliding manner so as to move crosswise to the relative axis 55 and stretch an abrasive belt 59 wound around the pulleys 54a, 54b in a ring shape.
  • the belt 59 is caused to come into contact with the relative face 6 to be sanded - and held there - by a pushing roller 60, which is mounted between the pulleys 54a so as to rotate around a longitudinal axis 61 of its parallel to the axes 55 and, furthermore, is movable around a rotation axis (which is not shown herein), which is eccentric relative to the axis 61, from and to an operating position, in which the roller 60 pushes the belt 59 against the relative face 6.
  • a pushing roller 60 which is mounted between the pulleys 54a so as to rotate around a longitudinal axis 61 of its parallel to the axes 55 and, furthermore, is movable around a rotation axis (which is not shown herein), which is eccentric relative to the axis 61, from and to an operating position, in which the roller 60 pushes the belt 59 against the relative face 6.
  • the device 53 further comprises a synchronizing roller 62, which is arranged within the belt 59 and is mounted so as to rotate around a longitudinal axis 63 of its, which is parallel to the axes 55, 61.
  • the roller 62 When the roller 60 is in its operating position, the roller 62 is moved crosswise to the axis 63, due to the thrust of a pneumatic operating device 64, so as to come into contact with the roller 60 and with one of the pulleys 54a in order to synchronize the peripheral speeds of the pulleys 54a and of the roller 60 and avoid friction of the belt 59 on the roller 60.
  • the unit 13 is completely similar to the unit 12 and the only difference from the unit 12 lies in the fact that:
  • the component 2 is caused to come into contact with the limit stop device 14 and, then, is moved by the roller conveyor device 7 and by the conveyor assemblies 21, 22 of the operating units 12, 13 in the direction 8 and along the path P.
  • the sanding machine 1 has two operating modes of the operating units 12, 13 depending on the profile of the side faces 6 of each component 2.
  • the rollers 45a, 45b of the unit 12 and the rollers 51a, 51b of the unit 13 are aligned with one another in the direction 8
  • the rollers 51a, 51b of the unit 12 and the rollers 45a, 45b of the unit 13 are aligned with one another and with the limit stop device 14 in the direction 8 and the feeding channel 23 has a constant width, which is equal to the width of the component 2.
  • the cylinders 19 fixed to the slides 16 of the two units 12, 13 are supplied with a pressure which, in any case, is smaller than the thrust exerted by the component 2 upon the assemblies 21, 22 of the two units 12, 13 so as to make up for possible changes in the shape of the faces 6 of the component 2.
  • the cylinders 30 of the shock absorber devices 29 of the two units 12, 13 are supplied with a pressure which, in any case, is smaller than the thrust exerted by the component 2 upon the assemblies 21, 22 of the two units 12, 13 so as to make up for possible changes in the width of the component 2 due to production size tolerances.
  • the slide 16 and, hence, the assemblies 21, 22 of each unit 12, 13 are movable in the direction 11 depending on the profile of the faces 6 of the component 2 and the platforms 31, 47 and, hence, the assemblies 21, 22 of each unit 12, 13 are movable around the relative fulcrum axes 32, 48 depending on the profile of the faces 6 of the component 2.
  • the path P extends through two further operating units, one of them (hereinafter indicated with 66) being shown in figures 10 and 11 and being configured to sand the bottom left edge 65 and the top right edge 65 and the other one (which is not shown herein) being configured to sand the bottom right edge 65 and the top left edge 65.
  • the unit 66 comprises a frame 67, an intermediate slide 68 and a shock absorber device 69, which are completely equivalent to the frame 15, to the intermediate slide 16 and to the shock absorber device 17 of the units 12, 13.
  • the slide 68 supports two conveyor assemblies 70, 71 arranged on opposite sides of the path P in the direction 11.
  • the assembly 70 is integral to the slide 68 in the direction 11, is aligned with the limit stop device 14 in the direction 8 and is provided with a vertical upright 72 projecting upwards from the slide 68 in the direction 33.
  • the upright 72 supports a plurality of motor-driven conveyor rollers 73 (in particular, two rollers 73), which are aligned with one another and with the device 14 in the direction 8, face the path P, laterally delimit the channel 23 and are mounted so as to rotate around respective rotation axes 74, which are parallel to the direction 33.
  • motor-driven conveyor rollers 73 in particular, two rollers 73
  • the upright 72 supports a plurality of motor-driven conveyor rollers 73 (in particular, two rollers 73), which are aligned with one another and with the device 14 in the direction 8, face the path P, laterally delimit the channel 23 and are mounted so as to rotate around respective rotation axes 74, which are parallel to the direction 33.
  • the assembly 70 further comprises a sanding device 75 provided with a first support plate 76, which is mounted on the upright 72 and is inclined relative to the surface A so as to be substantially perpendicular to the relative edge 65, with a second support plate 77, which is coupled to the plate 76 in a sliding manner so as to move, relative to the plate 76, in the direction 8, and with a bracket 78, which is coupled to the plate 76 in a rotary manner so as to rotate, relative to the plate 76 and due to the thrust of an operating device 79, which is better described below, with an oscillatory reciprocating motion around a fulcrum axis 80, which is parallel to the plate 76.
  • a sanding device 75 provided with a first support plate 76, which is mounted on the upright 72 and is inclined relative to the surface A so as to be substantially perpendicular to the relative edge 65, with a second support plate 77, which is coupled to the plate 76 in a sliding manner so as to move, relative to the plate 76
  • the device 75 has three pulleys 81, which are mounted on the plate 76 with a triangle-like arrangement, and an abrasive belt 82 wound around the pulleys 81 in a ring shape.
  • a first pulley 81 (hereinafter indicated with 81a) is a motor-driven roller mounted on the plate 76 so as to rotate around a longitudinal axis 83 of its, which is perpendicular to the plate 76, due to the thrust of an operating device 84 comprising an electric motor 85, which is fixed to the plate 76, and a belt transmission 86, which is interposed between the roller 81a and the motor 85.
  • a second pulley 81 (hereinafter indicated with 81b) is a stretching roller, which is mounted on the plate 77 so as to rotate around a longitudinal axis 87 of its parallel to the axis 83 and is moved by the plate 77 in the direction 8 so as to stretch the belt 82.
  • a third pulley 81 (hereinafter indicated with 81c) is mounted on the bracket 78 so as to rotate around a longitudinal axis 88 of its, whose orientation depends on the position of the bracket 78 around the axis 80.
  • the oscillatory reciprocating motion of the bracket 78 and, hence, of the pulley 81c around the axis 80 generates a straight reciprocating motion of the belt 82 along the pulleys 81a, 81b, 81c and, hence, a relatively even wear of the belt 82.
  • the device 79 comprises a reduction unit 89, which is fixed to the bracket 78 and has an input shaft 90, which is mounted so as to rotate around a longitudinal axis 91 of its parallel to the axis 88 and is connected to the pulley 81c through the interposition of a belt transmission 92.
  • the reduction unit 89 is further provided with an output shaft 93 comprising a first portion 94, which is coupled to the shaft 90 so as to rotate around a longitudinal axis 95 of its transverse to the axis 91, and a second portion 96, which has a longitudinal axis 97 parallel to the axis 95, is coupled to the portion 94 in an angularly fixed manner ans is further coupled to the portion 94 in a sliding manner so as to be moved, during a set-up phase for setting up the sanding device 75, crosswise to the axis 97.
  • the portion 96 is axially locked on the portion 94 by means of a fastening screw (not shown herein), which extends through a slot 98 obtained in the portion 96, is screwed into the portion 94 and allows the eccentricity of the axis 97 relative to the axis 95 to be selectively controlled.
  • the portion 96 is engaged in a rotary manner, through the interposition of a rolling ball bearing which is not shown herein, through a first free end of a connecting rod 99, whose second free end is connected, through the interposition of a ball joint which is not shown herein, to a coupling pin 100, which projects, crosswise to the axis 80, from a support bracket 101 fixed to the plate 76 perpendicularly to the plate 76.
  • the rotary motion of the pulley 81c around the axis 88 is transmitted by the belt transmission 92, first of all, to the input shaft 90 and, then, to the output shaft 93 of the reduction unit 89 so as to move the portion 94 around the axis 95 and the portion 96 around the axis 97.
  • the portion 96 Since the portion 96 is engaged through the connecting rod 99, which, in turn, is connected to the bracket 101 and, hence, to the plate 76, the portion 94 is caused to rotate around the eccentric axis 97, thus generating the oscillatory reciprocating motion of the bracket 78 around the axis 80.
  • the oscillatory reciprocating motion of the pulley 81c around the axis 80 generates a straight reciprocating motion of the belt 82 along the pulleys 81a, 81b, 81c parallel to the relative axes 83, 87, 88 and a substantially even wear of the belt 82 over a relatively large width of the belt 82.
  • the straight reciprocating motion of the belt 82 along the pulleys 81a, 81b, 81c has a back stroke and a forth stroke, which are independent of the speed of movement of the belt 82 around the pulleys 81a, 81b, 81c, depend on the width of the oscillation of the bracket 78 around the axis 80 and, hence, on the eccentricity between the axes 95 and 97 and are selectively controlled by changing the eccentricity between the axes 95 and 97.
  • the device 75 further comprises a pushing element 102, which is mounted between the pulleys 81b and 81c and is movable, due to the thrust of a pneumatic actuator cylinder 103 fixed to the plate 76, between a forward operating position, in which the element 102 causes the belt 82 to come into contact with the relative edge 65, and a retracted rest position, in which the belt 82 disengages the edge 65.
  • a pushing element 102 which is mounted between the pulleys 81b and 81c and is movable, due to the thrust of a pneumatic actuator cylinder 103 fixed to the plate 76, between a forward operating position, in which the element 102 causes the belt 82 to come into contact with the relative edge 65, and a retracted rest position, in which the belt 82 disengages the edge 65.
  • the assembly 71 is arranged on the side of the path P opposite the one of the device 14 and comprises a horizontal slide 104, which is mounted on the slide 68 and is coupled to the slide 68 in a sliding manner so as to make straight movements along the slide 68 in the direction 11 due to the thrust of an operating device, which is completely equivalent to the operating device 26, and through the interposition of a shock absorber device, which is completely equivalent to the shock absorber device 29.
  • the slide 104 extends upwards in the direction 33 and supports a plurality of motor-driven conveyor rollers 105 (in particular, two rollers 105), which are aligned with one another in the direction 8, face the path P, laterally delimit the channel 23 and are mounted so as to rotate around respective rotation axes 106, which are parallel to the direction 33.
  • the slide 104 is engaged in a sliding manner by a vertical slide 107, which, during a set-up phase for setting up the assembly 71, is moved by an operating device 108 along the slide 104 in the direction 33 depending on a height of the component 2.
  • the slide 107 supports a sanding device 109, which is completely equivalent to the sanding device 75 and is hinged to the slide 107 so as to rotate, relative to the slide 107 and due to the thrust of a pair of actuator cylinders 110, around a fulcrum axis 111, which is substantially parallel to the direction 8, between an operating position, in which the device 109 sands the relative edge 65, and a rest position, which is suited to allow the belt 82 to be replaced.
  • a sanding device 109 which is completely equivalent to the sanding device 75 and is hinged to the slide 107 so as to rotate, relative to the slide 107 and due to the thrust of a pair of actuator cylinders 110, around a fulcrum axis 111, which is substantially parallel to the direction 8, between an operating position, in which the device 109 sands the relative edge 65, and a rest position, which is suited to allow the belt 82 to be replaced.
  • the operating unit (not shown) mounted downstream of the unit 66 in the direction 8 is completely equivalent to the unit 66 and the only difference from the unit 66 lies in the fact that:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (15)

  1. Ponceuse pour le ponçage/la finition/le brossage de pièces (2) faites de bois, métal ou autre ; chaque pièce (2) ayant une face supérieure (3) et une face inférieure (4), qui sont sensiblement parallèles l'une à l'autre, une face avant (5) et une face (6) arrière ainsi que deux faces (6) latérales ; la ponceuse comprenant une structure de support (15, 16 ; 15, 16, 24) ; au moins une unité de ponçage (12, 13) ; et un dispositif d'amenée (7), qui définit une surface de support (A) pour au moins une pièce (2) et est conçu pour amener la pièce (2) dans une première direction (8), qui est parallèle à la surface de support (A), et le long d'un chemin (P) s'étendant à travers l'unité de ponçage (12, 13) ; l'unité de ponçage (12, 13) comprenant, à son tour, deux ensembles transporteurs (21, 22), qui sont montés sur des côtés opposés du chemin (P) dans une seconde direction (11) parallèle à la surface de support (A) et transversale par rapport à la première direction (8), définissent un canal d'amenée (23) amenant la pièce (2) à travers l'unité de ponçage (12, 13) et sont mobiles l'un par rapport à l'autre dans la seconde direction (11) en fonction d'une largeur de la pièce (2) mesurée parallèlement à la seconde direction (11) ; au moins un ensemble transporteur (21, 22) étant doté d'un dispositif de ponçage (53) pour le ponçage/la finition/le brossage d'une face (6) latérale de la pièce (2) ; et étant caractérisée en ce qu'au moins un ensemble transporteur (21, 22) comprend une plateforme rotative (31, 47), qui est montée de façon à tourner autour d'un axe de rotation (32, 48), qui est perpendiculaire à la surface de support (A), en raison de la poussée exercée par la pièce (2) sur l'ensemble transporteur (21, 22) en fonction d'un profil des faces (6) latérales de la pièce (2).
  2. Ponceuse selon la revendication 1, dans laquelle chaque ensemble transporteur (21, 22) comprend une plateforme rotative (31, 47), qui est montée de façon à tourner autour d'un axe de rotation (32, 48), qui est perpendiculaire à la surface de support (A), et un ensemble transporteur (45, 51), qui est monté sur la plateforme rotative (31, 47) ; le dispositif de ponçage (53) étant monté sur la plateforme rotative (47) de l'ensemble transporteur (22) relatif.
  3. Ponceuse selon la revendication 2, dans laquelle chaque ensemble transporteur (45, 51) comprend un rouleau d'entrée (45a, 51a), qui est monté sur lui de façon à tourner autour de l'axe de rotation (32, 48) de la plateforme rotative (31, 47) relative.
  4. Ponceuse selon la revendication 3, dans laquelle chaque ensemble transporteur (45, 51) comprend en outre un rouleau de sortie (45b, 51b) et au moins un rouleau intermédiaire (45b, 51b), qui est monté entre le rouleau d'entrée (45a, 51a) et le rouleau de sortie (45b, 51b).
  5. Ponceuse selon la revendication 4, dans laquelle le dispositif de ponçage (53) comprend un outil de ponçage (82), qui est monté entre le rouleau intermédiaire (45b, 51b) et le rouleau d'entrée (45a, 51a) ou le rouleau de sortie (45b, 51b).
  6. Ponceuse selon l'une quelconque des revendications précédentes et comprenant en outre, pour chaque plateforme rotative (31, 47), un premier dispositif amortisseur (34, 49) respectif pour permettre à la plateforme rotative (31, 47) de se déplacer autour de l'axe de rotation (32, 48) relatif en raison de la poussée exercée par la pièce (2) sur l'ensemble transporteur (21, 22) relatif en fonction du profil des faces (6) latérales de la pièce (2).
  7. Ponceuse selon la revendication 6, dans laquelle le premier dispositif amortisseur (34, 49) est interposé entre la structure de support (15, 16 ; 15, 16, 24) et la plateforme rotative (31, 47).
  8. Ponceuse selon l'une quelconque des revendications précédentes, dans laquelle chaque plateforme rotative (31, 47) est accouplée à la structure de support (15, 16 ; 15, 16, 24) par le biais de l'interposition d'au moins un dispositif d'accouplement (35) comprenant un premier coulisseau (40), qui est accouplé à la structure de support (15, 16 ; 15, 16, 24) d'une manière coulissante de façon à se déplacer dans la seconde direction (11), un second coulisseau (42), qui est accouplé au premier coulisseau (40) d'une manière coulissante de façon à se déplacer dans la première direction (8), et un roulement (43) pour s'accoupler au second coulisseau (42) et la plateforme rotative (31, 47) l'un à l'autre d'une manière rotative.
  9. Ponceuse selon l'une quelconque des revendications précédentes, dans laquelle la structure de support (15, 16 ; 15, 16, 24) comprend une base (15) et un patin intermédiaire (16), qui est interposé entre la base (15) et les deux ensembles transporteurs (21, 22), supporte les deux ensembles transporteurs (21, 22) et est accouplé à la base (15) d'une manière coulissante de façon à se déplacer dans la seconde direction (11) en raison de la poussée exercée par la pièce (2) sur les deux ensembles transporteurs (21, 22) en fonction d'un profil des faces (6) latérales de la pièce (2).
  10. Ponceuse selon la revendication 9, dans laquelle l'unité de ponçage (12, 13) comprend en outre un deuxième dispositif amortisseur (17), qui est interposé entre la base (15) et le patin intermédiaire (16) de façon à permettre au patin intermédiaire (16) de se déplacer dans la seconde direction (11) en raison de la poussée exercée par la pièce (2) sur les deux ensembles transporteurs (21, 22) en fonction du profil des faces (6) latérales de la pièce (2).
  11. Ponceuse selon la revendication 9 ou 10, dans laquelle un premier ensemble transporteur (22) est fixé sur le patin intermédiaire (16) dans la seconde direction (11) et un second ensemble transporteur (21) est mobile le long du patin intermédiaire (16) dans la seconde direction (11) en fonction de la largeur de la pièce (2).
  12. Ponceuse selon la revendication 11, dans laquelle l'unité de ponçage (12, 13) comprend en outre un dispositif fonctionnel (26) pour déplacer le second ensemble transporteur (21) le long du patin intermédiaire (16) dans la seconde direction (11) ; le dispositif fonctionnel (26) comprenant un élément actionneur (28), qui est mobile dans la seconde direction (11) .
  13. Ponceuse selon la revendication 12, dans laquelle le second ensemble transporteur (21) est accouplé à l'élément actionneur (28) d'une manière coulissante de façon à se déplacer, par rapport à l'élément actionneur (28), dans la seconde direction (11) en raison de la poussée exercée par la pièce (2) sur les deux ensembles transporteurs (21, 22) en fonction du profil des faces (6) latérales de la pièce (2) .
  14. Ponceuse selon la revendication 13, dans laquelle l'unité de ponçage (12, 13) comprend en outre un troisième dispositif amortisseur (29), qui est interposé entre le second ensemble transporteur (21) et l'élément actionneur (28).
  15. Ponceuse selon l'une quelconque des revendications 11 à 14, lorsqu'elles dépendent de la revendication 6 ou 7, dans laquelle le premier dispositif amortisseur (49) du premier ensemble transporteur (22) est interposé entre le patin intermédiaire (16) et la plateforme rotative (47) relative et le premier dispositif amortisseur (34) du second ensemble transporteur (21) est interposé entre la plateforme rotative (31) relative et un patin de support (24), qui est monté entre le patin intermédiaire (16) et la plateforme rotative (31) et est accouplé au patin intermédiaire (16) d'une manière coulissante.
EP21213637.8A 2020-12-11 2021-12-10 Une ponceuse pour le ponçage/la finition/le brossage de composants en bois, en métal ou similaires Active EP4011551B1 (fr)

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IT202000030551 2020-12-11

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EP4011551B1 true EP4011551B1 (fr) 2023-09-27

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE485535C (de) * 1928-05-16 1930-01-25 Andreas Jopp Fa Maschine zum gleichzeitigen Schleifen zweier gegenueberliegender Flaechen prismatischer Gegenstaende
DE1652072A1 (de) * 1951-01-28 1970-01-08 Franz Josefy Bandschleifmaschine
US3566546A (en) * 1966-11-21 1971-03-02 Chemetron Corp Apparatus for grinding welded rail
US3597881A (en) * 1968-11-13 1971-08-10 Murray Way Corp Grinder for grinding the faces of edge-supported workpieces

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