EP4066993A1 - Maschine zur oberflächenbearbeitung von platten aus holz, metall, kunststoff oder dergleichen - Google Patents

Maschine zur oberflächenbearbeitung von platten aus holz, metall, kunststoff oder dergleichen Download PDF

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Publication number
EP4066993A1
EP4066993A1 EP22166391.7A EP22166391A EP4066993A1 EP 4066993 A1 EP4066993 A1 EP 4066993A1 EP 22166391 A EP22166391 A EP 22166391A EP 4066993 A1 EP4066993 A1 EP 4066993A1
Authority
EP
European Patent Office
Prior art keywords
machine according
another
tensioning roller
coupled
relative
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.)
Pending
Application number
EP22166391.7A
Other languages
English (en)
French (fr)
Inventor
Fabio Balducci
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.)
Biesse SpA
Original Assignee
Biesse SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Biesse SpA filed Critical Biesse SpA
Publication of EP4066993A1 publication Critical patent/EP4066993A1/de
Pending legal-status Critical Current

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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
    • B24B7/06—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
    • 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
    • B24B19/24—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 of wood, e.g. furniture
    • 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
    • B24B21/12—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving a contact wheel or roller pressing the belt against the 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
    • 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
    • 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

Definitions

  • the invention relates to a machine for the surface finishing of panels made of wood, metal, plastic or the like.
  • the invention relates to a machine for the surface finishing of panels, such as, for example, a sanding machine, a deburring machine, a calibrating machine or a finishing machine.
  • the machine comprises a conveyor belt, which has an upper transport branch defining a substantially horizontal support surface for at least one panel and is designed to move the panel under a finishing device comprising, in turn, an upper tensioning roller, a lower drive roller and an abrasive belt wound in a ring shape around the tensioning roller and the drive roller in order to subject an upper face of the panel to a finishing processing.
  • a finishing device comprising, in turn, an upper tensioning roller, a lower drive roller and an abrasive belt wound in a ring shape around the tensioning roller and the drive roller in order to subject an upper face of the panel to a finishing processing.
  • the machine is further provided with an operating unit to move the tensioning roller relative to the drive roller and tension the abrasive belt.
  • the operating unit comprises a pair of actuator cylinders, which are mounted at the free ends of the tensioning roller and are provided with respective output rods connected to the tensioning roller and movable along the actuator cylinders between respective extracted positions and respective retracted positions.
  • the tensioning roller is mounted so as to:
  • the object of the invention is to provide a machine for the surface finishing of panels made of wood, metal, plastic or the like, which does not suffer from the drawbacks described above and is simple and economic to be actuated.
  • number 1 indicates, as a whole, a machine for the surface finishing of panels 2 made of wood, metal, plastic or the like with a substantially parallelepiped-like shape.
  • the sanding machine 1 comprises a support frame 3; and a feeding device 4 comprising, in turn, a conveyor belt 5, which is wound in a ring shape around a pair of motor-driven pulleys 6 mounted so as to rotate around respective longitudinal axes 7 parallel to one another and to a horizontal direction 8, has an upper transport branch defining a horizontal support surface P for at least one panel 2 and is designed to move the panels 2 in a horizontal direction 9 transverse to the direction 8.
  • the sanding machine 1 is further provided with a sanding unit 10, which is mounted above the surface P and comprises an abrasive belt 11 wound in a ring shape around at least a lower drive roller 12 and an upper tensioning roller 13.
  • the roller 12 is mounted so as to rotate around a longitudinal axis 14 of its, which is parallel to the axes 7 and to the direction 8; and the roller 13 comprises a support shaft 15, which has a longitudinal axis 16 substantially parallel to the direction 8, and a sleeve 17, which extends around the shaft 15 coaxially to the axis 16 and is coupled to the shaft 15 in a rotary manner so as to rotate, relative to the shaft 15, around the axis 16.
  • the roller 13 is movable, relative to the frame 3 and due to the thrust of an operating unit 18, in a vertical direction 19 orthogonal to the directions 8 and 9 between a lowered rest position, in which the belt 11 is engaged on/disengaged from the rollers 12, 13, and a lifted operating position, in which the belt 11 is tensioned by the roller 13.
  • the unit 18 comprises two actuator cylinders 20, 21, which are fixed to the frame 3 parallel to the direction 19 and have respective output rods 22, 23 which are connected to respective free ends of the shaft 15 axially projecting from the sleeve 17 and are movable along the cylinders 20, 21.
  • Each rod 22, 23 has an upper free end, which extends on the outside of the relative cylinder 20, 21 and is connected to the shaft 15, and a lower free end, which extends on the outside of the relative cylinder 20, 21 and is provided with a rack 24 parallel to the direction 19.
  • the racks 24 define part of a mechanical coupling device 25, which connects the rods 22, 23 to one another and is configured so as to synchronize the movements of the rods 22, 23 with one another and is further configured so that the movement of one of the rods 22, 23 causes the movement of the other rod 22, 23.
  • the device 25 further comprises a transmission shaft 26, which is mounted so as to rotate around a rotation axis 27 substantially parallel to the direction 8 and comprises, in turn, a first segment 28, which is provided with a pinion 29 coupled to the rack 24 of the rod 22, and a second segment 30, which is provided with a pinion 31 coupled to the rack 24 of the rod 23.
  • the two segments 28, 30 are coupled to one another in a rotary manner and are connected to one another by means of an elastic joint 32 comprising an outer half-joint 33, which is angularly integral to the segment 30 and is delimited by an inner surface with a substantially square shape.
  • the elastic joint 32 further comprises an inner half-joint 34, which is angularly integral to the segment 28, extends inside the half-joint 33 and is delimited by an outer surface with a substantially square shape, which is inclined at a 45° angle relative to the inner surface of the half-joint 33.
  • the two half-joints 33, 34 are coupled to one another in a rotary manner through the interposition of a plurality of elastic elements 35, specifically four elastic material bars 35, interposed between the two half-joints 33 and 34 in order to selectively control the rotation of the two segments 28 and 30 relative to one another.
  • Each bar 35 is parallel to the axis 16 and to the direction 8 and is mounted between a longitudinal corner of the inner surface of the half-joint 33 and a flat surface of the outer surface of the half-joint 34.
  • the shaft 15 is connected to the rods 22, 23 so as to move with an oscillatory reciprocating motion around the longitudinal axis of one of the cylinders 20, 21 so as to cause a straight reciprocating motion of the belt 11 along the rollers 12 and 13.
  • the coupling device 25 offers some advantages, which are mainly due to the fact that the assembly defined by the racks 24, by the transmission shaft 26 and by the pinions 29, 31 allows the movements of the output rods 22, 23 to be synchronized and, hence, allows the movement of each rod 22, 23 to automatically activate the movement of the other rod 22, 23.
  • the coupling device 25 offers a further advantage lying in the fact that the elastic joint 32 allows the segments 28 and 30 to rotate relative to one another around the axis 27.
  • the elastic joint 32 allows the rod 22, 23 of the cylinder 20, 21 mounted in the area of the circular end of the belt 11 with the larger diameter to make a further movement relative to the rod 22, 23 of the cylinder 20, 21 mounted in the area of the circular end of the belt 11 with the smaller diameter, so as to correctly tension the belt 11.
EP22166391.7A 2021-04-02 2022-04-01 Maschine zur oberflächenbearbeitung von platten aus holz, metall, kunststoff oder dergleichen Pending EP4066993A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000008375A IT202100008375A1 (it) 2021-04-02 2021-04-02 Macchina per la finitura superficiale di pannelli di legno, metallo, plastica o simili

Publications (1)

Publication Number Publication Date
EP4066993A1 true EP4066993A1 (de) 2022-10-05

Family

ID=76523379

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22166391.7A Pending EP4066993A1 (de) 2021-04-02 2022-04-01 Maschine zur oberflächenbearbeitung von platten aus holz, metall, kunststoff oder dergleichen

Country Status (2)

Country Link
EP (1) EP4066993A1 (de)
IT (1) IT202100008375A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29600447U1 (de) * 1996-01-12 1996-02-29 Ernst Maschf Gmbh Paul Breitbandschleifmaschine
US6299512B1 (en) * 1999-05-13 2001-10-09 Alessandro Costa Belt sander with orbitally translated abrasive belt
EP2210705A2 (de) * 2009-01-22 2010-07-28 Steinemann Technology AG Einrichtung zur Bandspannung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29600447U1 (de) * 1996-01-12 1996-02-29 Ernst Maschf Gmbh Paul Breitbandschleifmaschine
US6299512B1 (en) * 1999-05-13 2001-10-09 Alessandro Costa Belt sander with orbitally translated abrasive belt
EP2210705A2 (de) * 2009-01-22 2010-07-28 Steinemann Technology AG Einrichtung zur Bandspannung

Also Published As

Publication number Publication date
IT202100008375A1 (it) 2022-10-02

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