EP4015146B1 - Schleifmaschine - Google Patents

Schleifmaschine Download PDF

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Publication number
EP4015146B1
EP4015146B1 EP21213605.5A EP21213605A EP4015146B1 EP 4015146 B1 EP4015146 B1 EP 4015146B1 EP 21213605 A EP21213605 A EP 21213605A EP 4015146 B1 EP4015146 B1 EP 4015146B1
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EP
European Patent Office
Prior art keywords
panel
workpiece
sander machine
axis
sanding
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.)
Active
Application number
EP21213605.5A
Other languages
English (en)
French (fr)
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EP4015146A1 (de
Inventor
Marco Venturini
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.)
SCM Group SpA
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SCM Group SpA
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Publication date
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Publication of EP4015146A1 publication Critical patent/EP4015146A1/de
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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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/26—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding workpieces with arcuate surfaces, e.g. parts of car bodies, bumpers or magnetic recording 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • 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
    • B24B7/30—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 plastics
    • 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
    • B24B9/04—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 metal, e.g. skate blades
    • 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
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/006—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools for edges of skis, snowboards or the like
    • 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
    • B24B7/06—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving conveyor belts, a sequence of travelling work-tables or the like

Definitions

  • the present invention relates to a sander machine.
  • the invention relates to a sander machine for machining panels or similar pieces, in which a substantially flat surface and an opposite shaped surface, i.e. having a curvilinear profile, are defined.
  • the sander machine at issue is intended for finishing, by sanding, the substantially flat surface of the panel or similar piece, in order to achieve a higher degree of planarity thereof.
  • the piece obtained by machining through means of the aforementioned sander machine can be used individually for subsequent machining, or coupled to another piece, also worked by the same sander machine, by overlapping and joining together the respective flat surfaces.
  • the pieces obtained by machining with the aforementioned sander machine can be used, for example, for making skis.
  • the object of the present invention is to provide a sander machine which is capable of effectively and precisely finishing the flat surface of a panel or similar piece in which a shaped surface opposite to said flat surface is defined.
  • Another object of the invention is to provide a sander machine that operates in such a way as to eliminate, or in any case reduce to a minimum, the risk of obtaining machined parts that do not conform to the desired characteristics.
  • a further object of the present invention is to provide a sander machine which is safe during its operation.
  • the present invention provides a sander machine in accordance with claim 1.
  • Advantageous features are provided in the dependent claims.
  • 1 indicates as a whole a sander machine according to the present invention, for finishing, by sanding, a substantially flat surface of a panel P or other workpiece, in which a shaped surface is also defined (i.e., a surface with curvilinear profile) on the side opposite to said substantially flat surface.
  • a shaped surface is also defined (i.e., a surface with curvilinear profile) on the side opposite to said substantially flat surface.
  • Said sander machine 1 comprises a frame 2 and a cabin 3, or a casing, mounted on said frame 2.
  • An inlet 4 for the panels to be treated and an outlet 5 for the machined panels are defined in the cabin 3.
  • an operating unit 6 for carrying out the required sanding operations on the panels.
  • a first conveyor belt 7 is also provided for transporting the panel P to be treated from the inlet 4 to the operating unit 6, along a direction of advancement A.
  • a first plurality of accompanying rollers 8 is provided, idle, to keep the panel P adhering to the same first conveyor belt 7 during its transport and accompany its movement from the inlet 4 to the operating unit 6.
  • the panel P is arranged with its substantially flat lower surface L facing the underlying first conveyor belt 7, and with its abutment upper surface U, shaped, facing the overlying first plurality of accompanying rollers 8.
  • each accompanying roller 8 is mounted on a respective pneumatic piston 9 oriented in such a way as to push the relative acceleration roller support 8 against the shaped upper surface U of the panel P, thus ensuring that the same panel P remains constantly adherent to the underlying first conveyor belt 7 during its way_towards the operating unit 6.
  • the aforementioned operating unit 6, arranged downstream of the first conveyor belt 7, comprises instead a sanding roller 10, with a horizontal axis, orthogonal to the advancing direction A, in which the upper end of the sanding roller 10 is substantially flush with, or coplanar with, the upper surface of the first conveyor belt 7.
  • An abrasive surface is provided on the external surface of the sanding roller 10 to abrade or smooth the lower surface L of the panel P when the latter is passed over the sanding roller 10 itself.
  • the sander machine 1 there are also motor means for setting the sanding roller 10 in rotation about its axis, for the execution of the planned sanding machining on the panel P.
  • the operating unit 6 also includes a abutment roller 11 arranged above the sanding roller 10 and idly rotatable around a respective axis of rotation, parallel to the axis of rotation of the sanding roller 10 itself.
  • the respective axes of rotation of the abutment roller 11 and of the sanding roller 10 lie on a plane substantially orthogonal to the advancing direction A.
  • the abutment roller 11 is movable along a Z-axis, which is substantially orthogonal to the plane on which the panel P is made advance.
  • the sander machine 1 also comprises a control unit, capable of receiving and storing data and information relating to the shape, in particular the profile, of each panel P to be sanded.
  • movement means are provided, which are operatively connected to this control unit in such a way as to move the abutment roller 11 along said Z-axis according to the profile of the panel P, existing at any instant between the contact area between the sanding roller 10 and the panel P and the contact area between the latter and the abutment roller 11, during the advancement of the panel P along the advancing direction A.
  • control unit commands, by means of the aforementioned moving means, the movement of the abutment roller 11 along the Z-axis as a function of the data stored therein, inherent to the shape or rather to the profile of the panel P being machined, and to the advancement speed of this panel P along the advancing direction A and/or to the position of the panel P along the advancing direction A.
  • the data relating to the advancement speed and the position of the panel P along the advancing direction A depend on the machining program to be carried out and can be directly stored in the control unit or detected by using suitable sensors configured to transmit the detected data to the control unit itself.
  • first lower support 12 adjustable in height and having a flat top surface which, during the operation of the sander machine 1, is arranged at a slightly lower level than the top level of the sanding roller 10 and of the first conveyor belt 7, to make it possible to remove material from the lower surface L of the panel P by the same sanding roller 10.
  • first lower support 12 there is a first pair of idle rollers 13, individually movable along the Z-axis and associated, each, with a respective pneumatic system capable of keeping them constantly thrust towards the upper surface U of the panel P, so that the portion of the panel passing under said first pair of rollers 13 is kept pressed by the latter against the underlying first lower support 12 during the advancement of the panel P along the advancing direction A.
  • a second conveyor belt 14 Downstream of the sanding roller 10 there is a second conveyor belt 14 to transport the machined panel P from the operating unit 6 to the outlet 5; the top surfaces of the first conveyor belt 7 and of the second conveyor belt 14 being substantially at the same height according to said Z-axis.
  • the second conveyor belt 14 there is a second plurality of accompanying rollers 15, idle, to keep the panel P adhering to the same second conveyor belt 14 during its transport and accompany its movement from the operating unit 6 towards the outlet 5.
  • the panel P is arranged with its lower surface L, machined, facing the underlying second conveyor belt 14, and with the relative upper surface U facing the overlying second plurality of accompanying rollers 15.
  • each roller of the second plurality of accompanying rollers 15 is mounted on a respective pneumatic piston 16, oriented in such a way as to push the relative roller d the accompaniment 15 against the shaped upper surface U of the panel P, ensuring that the same panel P remains constantly adhering to the underlying second conveyor belt 14 during its journey towards the outlet 5.
  • a second lower support 17 adjustable in height and having a flat top surface, which during the operation of the sander machine 1 is arranged at a slightly higher level than the top level of the first lower support 12, to make it possible to remove material from the lower surface L of the panel P by the sanding roller 10.
  • the second lower support 17 there is a second pair of idle rollers 18, individually movable along the Z axis and associated each with a respective pneumatic system capable of maintaining them constantly pushing downwards, that is towards the upper surface U of the panel P at the outlet from the operating unit 6, so that the portion of the panel passing under said second pair of rollers 18 is kept pressed by the latter against the underlying second lower support 17 during the advancement of the panel P along the advancing direction A.
  • the aforementioned control unit As the panel P advances in the advancing direction A passing through the operating unit 6 in the space between the sanding roller 10 and the abutment 11, the latter is controlled by the aforementioned control unit to continuously raise and lower along the Z-axis according to the profile of the panel P present at any moment in the aforementioned space.
  • the rotating sanding roller 10 can operate on the lower surface L of the panel P by removing from this only the protruding portions of material, thus allowing to obtain a surface with a higher degree of flatness.
  • the panel P after being subjected to sanding in the operating unit 6, passes over the second conveyor belt 14, which carries it to the outlet 5 with the aid of the second plurality of accompanying rollers 15.
  • the sander machine according to the present invention allows to efficiently work a panel having a substantially larger surface and an opposite surface shaped in such a way as to be able to achieve a greater degree of planarity of this substantially flat surface and also the absence of defects in the same machined surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Transplanting Machines (AREA)

Claims (9)

  1. Schleifmaschine (1) zur Bearbeitung mindestens einer Platte (P) oder eines Werkstücks, wobei die Platte (P) oder das Werkstück umfasst eine erste Oberfläche (L), die im Wesentlichen flach ist, und eine zweite Oberfläche (U), die geformt ist, gegenüber der ersten Oberfläche (L), wobei die Schleifmaschine (1) umfasst:
    erste Bewegungsmittel (7), um im Betrieb die mindestens eine Platte (P) oder das Werkstück in eine Arbeitszone gemäß einer Vorschubrichtung (A) zu bewegen; eine Schleifeinrichtung (10), die in der Betriebszone angeordnet und so konfiguriert ist, dass sie im Betrieb die erste Oberfläche (L) der mindestens eine Platte (P) oder des Werkstücks schleift; ein Anschlagelement (11), das gemäß einer Achse (Z) beweglich ist, die quer zu der Vorschubrichtung (A) verläuft, und das oberhalb der Schleifmittel (10) angeordnet ist, so dass, wenn sich die mindestens eine Platte (P) oder das Werkstück gemäß der Vorschubrichtung (A) vorwärts bewegt die mindestens eine Platte (P) oder das Werkstück durch den Raum zwischen dem Schleifmittel (10) und dem Anschlagelement (11) hindurchgeht, wobei die erste Fläche (L) dem Schleifmittel (10) und die zweite Fläche (U) dem Anschlagelement (11) zugewandt ist; und Betätigungsmittel zum Bewegen des Widerlagerelements (11) entlang der Achse (Z);
    und wobei die Schleifmaschine (1) dadurch gekennzeichnet ist, dass sie umfasst:
    eine Steuereinheit, die so konfiguriert ist, dass sie die Vorschubgeschwindigkeit und/oder die Position der mindestens einen Platte (P) oder des Werkstücks entlang der Vorschubrichtung (A) und das Profil der mindestens einen Platte (P) oder des Werkstücks gemäß der Achse (Z) kennt, die sich zu jedem Zeitpunkt zwischen der Schleifeinrichtung (10) und dem Anschlagelement (11) befindet, wenn sich die mindestens eine Platte (P) oder das Werkstück entlang der Vorschubrichtung (A) vorwärts bewegt; wobei die Steuereinheit betriebsmäßig mit der Betätigungseinrichtung verbunden ist, so dass die Steuereinheit durch die Betätigungseinrichtung die Bewegung des Anschlagelements (11) entlang der Achse (Z) auf der Grundlage der Vorschubgeschwindigkeit und/oder der Position der mindestens einen Platte (P) oder des Werkstücks entlang der Vorschubrichtung (A), des Werts des Profils steuert, um es der Schleifeinrichtung (10) zu ermöglichen, im Gebrauch die erste Oberfläche (L) auf eine solche Weise zu schleifen, dass ein höheres Ebenheitsniveau der ersten Oberfläche (L) erreicht wird.
  2. Schleifmaschine (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Schleifmittel ein rotierendes Schleifelement (10) umfassen, das um eine erste Rotationsachse drehbar ist.
  3. Schleifmaschine (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Anschlagelement eine Rolle (11) umfasst, die um eine zweite Drehachse drehbar ist.
  4. Schleifmaschine (1) nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, dass die erste Drehachse im Wesentlichen parallel zur zweiten Drehachse verläuft.
  5. Schleifmaschine (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Achse (Z) senkrecht zur Vorschubrichtung (A) verläuft.
  6. Schleifmaschine (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie erste Schubmittel (8, 9) umfasst, die in der Lage sind, im Betrieb die mindestens eine Platte (P) oder ein anderes Werkstück an den ersten Vorschubmitteln (7) haften zu lassen.
  7. Schleifmaschine (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie umfasst:
    eine erste Stütze (12), die zwischen den ersten Bewegungsmitteln (7) und den Schleifmitteln (10) angeordnet ist, so dass sich das mindestens eine Paneel (P) oder ein anderes Werkstück im Betrieb gegen die erste Stütze (12) lehnt, bevor es in den Arbeitsbereich gelangt, wobei die erste Stütze (12) in der Höhe gemäß der Achse (Z) verstellbar ist; und
    eine zweite Stütze (17), die stromabwärts der Schleifeinrichtung (10) angeordnet ist, so dass sich die mindestens eine Platte (P) oder das Werkstück im Gebrauch gegen die zweite Stütze (17) lehnt, nachdem sie/es die Arbeitszone durchlaufen hat, wobei die zweite Stütze (17) in der Höhe entsprechend der Achse (Z) einstellbar ist.
  8. Schleifmaschine (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie eine zweite Bewegungseinrichtung (14) umfasst, um im Gebrauch die mindestens eine Platte (P) oder das Werkstück von der Arbeitszone zu einer Ausgangszone zu bewegen, um die mindestens eine Platte (P) oder ein anderes Werkstück, das durch die Schleifeinrichtung (10) bearbeitet wurde, zu sammeln.
  9. Schleifmaschine (1) nach Anspruch 8, dadurch gekennzeichnet, dass sie zweite Schubmittel (15, 16) umfasst, die in der Lage sind, im Gebrauch die mindestens eine Platte (P) oder das Werkstück an den zweiten Bewegungsmitteln (14) haften zu lassen.
EP21213605.5A 2020-12-16 2021-12-10 Schleifmaschine Active EP4015146B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102020000030998A IT202000030998A1 (it) 2020-12-16 2020-12-16 Macchina levigatrice.

Publications (2)

Publication Number Publication Date
EP4015146A1 EP4015146A1 (de) 2022-06-22
EP4015146B1 true EP4015146B1 (de) 2024-11-20

Family

ID=74858573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21213605.5A Active EP4015146B1 (de) 2020-12-16 2021-12-10 Schleifmaschine

Country Status (2)

Country Link
EP (1) EP4015146B1 (de)
IT (1) IT202000030998A1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2384777A (en) * 1941-12-18 1945-09-11 Westman Bror Otto Machine for finishing the runner face of skis
US4137673A (en) * 1976-04-23 1979-02-06 Tour Barry Ski dressing apparatus
NL167112C (nl) * 1978-11-03 1981-11-16 Linden Bv Machine Schuurinrichting.
ES2200653B1 (es) * 2001-11-13 2005-05-01 Miguel Angel Garcia Perez Lijadora - pulidora.
CN104117891B (zh) * 2014-07-23 2017-01-11 浙江盛丰科技有限公司 一种木塑砂光机
DE102015015129A1 (de) * 2015-11-21 2017-05-24 Reichmann + Sohn Gmbh Verfahren zum Schleifen von Oberflächen, insbesondere von Wintersportgeräten und Vorrichtung zur Durchführung des Verfahrens

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Publication number Publication date
IT202000030998A1 (it) 2022-06-16
EP4015146A1 (de) 2022-06-22

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