EP3834986A1 - Schleifmaschine mit einer zusatzeinrichtung zum anbringen eines schleifbandes - Google Patents

Schleifmaschine mit einer zusatzeinrichtung zum anbringen eines schleifbandes Download PDF

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Publication number
EP3834986A1
EP3834986A1 EP20210045.9A EP20210045A EP3834986A1 EP 3834986 A1 EP3834986 A1 EP 3834986A1 EP 20210045 A EP20210045 A EP 20210045A EP 3834986 A1 EP3834986 A1 EP 3834986A1
Authority
EP
European Patent Office
Prior art keywords
sanding
sanding machine
abrasive belt
auxiliary device
advancing
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.)
Granted
Application number
EP20210045.9A
Other languages
English (en)
French (fr)
Other versions
EP3834986B1 (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
Original Assignee
SCM Group SpA
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Filing date
Publication date
Application filed by SCM Group SpA filed Critical SCM Group SpA
Publication of EP3834986A1 publication Critical patent/EP3834986A1/de
Application granted granted Critical
Publication of EP3834986B1 publication Critical patent/EP3834986B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18—Accessories
    • 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
    • B24B21/18—Accessories
    • B24B21/20—Accessories for controlling or adjusting the tracking or the tension of the grinding belt

Definitions

  • the present invention relates to a sanding machine provided with an auxiliary device to facilitate mounting an abrasive belt.
  • the invention relates to a sanding machine provided with an auxiliary device for facilitating the assembly, by an operator, of a closed-loop abrasive belt for sanding panels, arranged transversely with respect to the advancing direction of the panels to be machined.
  • the assembly of the closed-looped abrasive belts transversal to the advancing direction of the panels to be machined is carried out by the operators in a completely manual way by winding, in sequence, a portion of the belt on a first pulley and the opposite portion of the same belt on the opposite pulley.
  • Another object of the invention is to provide a sanding machine equipped with an auxiliary device to facilitate the assembly of an abrasive belt, which is polyvalent, i.e., which can be adapted to different types of sanding machines.
  • a further object of the present invention is to provide a sanding machine equipped with an auxiliary device to facilitate the assembly of an abrasive belt, which is not complex from the structural point of view.
  • a sanding machine for sanding panels or similar items, comprising: advancing means for advancing, in use, at least one panel or similar item according to a predetermined advancing direction; at least one sanding device for sanding, in use, at least one panel or similar item during the advancement of said at least one panel or similar item according to said predetermined advancing direction, said at least one sanding device comprising a removable abrasive belt, directed transversely to said predetermined advancing direction; and at least one auxiliary device to promote, in use, fitting of said abrasive belt, by an operator, in said at least one sanding device, said at least one auxiliary device comprising movement means for moving, in use, at least one portion of said abrasive belt transversely to said predetermined advancing direction from a first position, which is reachable by an operator and adjacent to a first outer edge of said sanding machine, to a second position reachable by an operator and adjacent to a
  • an advancing surface may be provided on which said advancing means advances, in use, said at least one panel or similar item according to said advancing direction
  • said movement means may be configured for moving, in use, said at least one portion of said abrasive belt transversely to a second surface arranged orthogonally to said advancing surface according to said advancing direction, and in that said at least one abrasive belt may be directed transversely to said second surface.
  • said at least one sanding device comprises a driven pulley and a drive pulley and in that said at least one abrasive belt has a loop shape so as to be windable on said driven pulley and on said drive pulley.
  • said movement means may comprise a guide element, a movable member movably engaged with said guide element, and a gripping element connected to said movable member and configured for gripping, in use, said at least one portion of said abrasive belt.
  • said gripping element may be movable between a substantially vertical position and a substantially horizontal position.
  • said gripping element may be rotatable in a vertical direction.
  • said guide element may be a substantially rectilinear guide.
  • said at least one auxiliary device may face said at least one sanding device.
  • said at least one sanding device and said at least one auxiliary device may be arranged below said advancing surface, and in that said sanding machine comprises at least one component that is movable between a raised position, wherein said at least one component is interposed between said at least one sanding device and said at least one auxiliary device, and a lowered position, in which said at least one component is arranged below said at least one sanding device and said at least one auxiliary device.
  • the numerical reference 1 indicates a first sanding machine according to the invention, comprising a conveyor belt 2 to allow the advancement of the panels to be machined through said sanding machine 1 according to the advancing direction A.
  • the sanding machine 1 also comprises a containment cabinet 3, or a covering and protection casing, through which the aforementioned conveyor belt 2 is arranged.
  • abrasive rollers 4 oriented transversely to said advancing direction A, and also a sanding device 5, equipped with an abrasive belt 6, arranged transversely to the same advancing direction A, and wound on a drive pulley 7, driven by a motor 8, and on a driven pulley 9.
  • the sanding action exerted by the sanding device 5 on the upper face of each panel passing under it is performed by the sliding of the abrasive belt 6 on the drive pulley 7 and on the driven pulley 9 produced by the rotation of the drive pulley 7, driven by the motor 8.
  • an auxiliary device 11 Adjacent to the sanding device 5, and in a position facing the latter, an auxiliary device 11 is provided to facilitate the assembly of the abrasive belt 6 on the drive pulley 7 and the driven pulley 9 of the same sanding device 5 by an operator.
  • this auxiliary device 11 comprises a rectilinear guide 12 fixed transversely to the aforementioned advancing direction A, parallel to the abrasive belt 6 of the sanding device 5.
  • both the abrasive belt 6 of the sanding device 5 and the respective rotation axes of the abrasive rollers 4 and the rectilinear guide 12 of the auxiliary device 11 are directed transversely, in particular perpendicularly, to a plane orthogonal to the plane on which they are made to advance the panels to be machined and directed according to the advancing direction A; furthermore, the drive pulley 7 and the driven pulley 9 are arranged, respectively, in correspondence with the opposite sides 10a, 10b, or rather the sides of the containment cabinet 3.
  • this rectilinear guide 12 has a length such that the relative ends are, respectively, arranged substantially opposite the drive pulley 7 and the driven pulley 9.
  • the auxiliary device 11 also includes a carriage 13 movable along the rectilinear guide 12 through the use of actuator means.
  • this gripping member 14 has an oblong shape, such as to allow, precisely, when arranged in a horizontal position, the gripping of a portion of the abrasive belt 6 by winding the latter to the same gripping member 14.
  • the above operations of replacing the abrasive belt can be easily carried out by a single operator, who, after winding up the new abrasive belt on one of the two pulleys 7, 9, positioning himself in correspondence with this, can move to the opposite side of the sanding machine 1 to take the other portion of abrasive belt, carried there by the auxiliary device 11, and wind it on the other of the two pulleys 7, 9 to complete the assembly.
  • the gripping member 14 can also be provided fixed in the operative position in the cases in which in the same sanding machine 1 there are no obstacles to the movement of this gripping member 14 from one side to the other rectilinear guide 12.
  • FIG. 7 there is shows a second sanding machine 1' according to the invention, in which the panels to be machined are interposed between the overlying conveyor belt 2' and a plurality of sliding rollers 3', 3", idle, underneath the panels, and are made to advance due to the sliding of the conveyor belt 2' according to the advancing direction A'.
  • the sanding rollers 4', the sanding belt of the sanding device 5', and the relative auxiliary device of the second sanding machine 1' are oriented transversely to the advancing direction A', according to which the conveyor belt 2' advances the panels to be machined.
  • the sanding device 5' and the relative auxiliary device of the second sanding machine 1' are substantially identical, respectively, to the sanding device 5 and the auxiliary device 11 described above in relation to the first sanding machine 1.
  • the sanding device 5' and the relative auxiliary device are provided under the conveyor belt 2', thus allowing the sanding of the lower face of the panels.
  • said one or more sliding rollers 3" should be such as to be able to move between a raised position, in which they are interposed between the sanding device 5' and the relative auxiliary device, and a lowered position, in which said one or more sliding rollers 3" are arranged under the sanding device 5' and the relative auxiliary device, and vice versa.
  • both the first sanding machine 1 and the second sanding machine 1' described above allow the abrasive belt of the transversal sanding device to be replaced easily and quickly, avoiding that the belt can become entangled or get stuck in some other members or component of the machine when replacing the abrasive belt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP20210045.9A 2019-12-11 2020-11-26 Schleifmaschine mit einer zusatzeinrichtung zum anbringen eines schleifbandes Active EP3834986B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000023637A IT201900023637A1 (it) 2019-12-11 2019-12-11 Macchina levigatrice dotata di un dispositivo ausiliario per favorire il montaggio di un nastro abrasivo.

Publications (2)

Publication Number Publication Date
EP3834986A1 true EP3834986A1 (de) 2021-06-16
EP3834986B1 EP3834986B1 (de) 2024-05-29

Family

ID=70154996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20210045.9A Active EP3834986B1 (de) 2019-12-11 2020-11-26 Schleifmaschine mit einer zusatzeinrichtung zum anbringen eines schleifbandes

Country Status (2)

Country Link
EP (1) EP3834986B1 (de)
IT (1) IT201900023637A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1332626A (en) * 1971-07-22 1973-10-03 Ernst Maschf Gmbh Paul Belt sander
EP0980740A2 (de) * 1998-08-20 2000-02-23 Benetti Meyers International S.r.l. Maschine zum Bearbeiten von Gesteinsoberflächen, insbesondere von Steinplatten oder dergleichen, sowie Marmor, Granit, aber auch Keramik und andere Baumaterialen, verwendet für Böden und Beläge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1332626A (en) * 1971-07-22 1973-10-03 Ernst Maschf Gmbh Paul Belt sander
EP0980740A2 (de) * 1998-08-20 2000-02-23 Benetti Meyers International S.r.l. Maschine zum Bearbeiten von Gesteinsoberflächen, insbesondere von Steinplatten oder dergleichen, sowie Marmor, Granit, aber auch Keramik und andere Baumaterialen, verwendet für Böden und Beläge

Also Published As

Publication number Publication date
IT201900023637A1 (it) 2021-06-11
EP3834986B1 (de) 2024-05-29

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