EP0225296A1 - Breitbandschleifmaschine - Google Patents

Breitbandschleifmaschine Download PDF

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Publication number
EP0225296A1
EP0225296A1 EP86830292A EP86830292A EP0225296A1 EP 0225296 A1 EP0225296 A1 EP 0225296A1 EP 86830292 A EP86830292 A EP 86830292A EP 86830292 A EP86830292 A EP 86830292A EP 0225296 A1 EP0225296 A1 EP 0225296A1
Authority
EP
European Patent Office
Prior art keywords
carpet
rollers
smooth
sander
conveyor
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.)
Ceased
Application number
EP86830292A
Other languages
English (en)
French (fr)
Inventor
Vittorio Tassoni
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.)
DMC SpA
Original Assignee
DMC 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 DMC SpA filed Critical DMC SpA
Publication of EP0225296A1 publication Critical patent/EP0225296A1/de
Ceased 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
    • 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

Definitions

  • This invention relates to a wide belt smooth sander of a type which comprises, mounted on a frame, a carpet conveyor for transporting workpieces which extends in a longitudinal direction, and a sanding assembly having a set of rollers whose parallel axes lie across and above said carpet conveyor and over which an abrasive belt is stretched, and a pressure device for the abrasive belt mounted between said rollers and extending parallel thereto to push said belt toward said carpet conveyor.
  • This type of smooth sander is employed, inter alia, for finishing varnished panels which are then subjected to a polishing step to achieve a glossy lacquered effect.
  • the roller supporting the abrasive belt are mounted transversely to the carpet conveyor for the panels being processed, with their axes parallel to said carpet and perpendicular to the transport direction.
  • Surface defects most frequently found on finished panels include scratches extending in the panel direction of transport and being due to lumpiness of the abrasive belt.
  • the problem underlying this invention is to provide a wide belt smooth sander which is so constructed and operated as to obviate the problems of the cited prior art.
  • the axes of said rollers and said pressure device form an angle of about 80° with the longitudinal direction of the carpet conveyor.
  • a wide belt smooth sander generally indicated at 1, comprises a frame 2, a sanding assembly 3, and a carpet conveyor 4 having a longitudinal main direction and a working transport run 4a which extends between the assembly 3 and the frame 2.
  • the carpet conveyor 4 is arranged to feed a panel 5 in the direction of the arrow F to underneath the assembly 3.
  • the direction F coincides with the longitudinal direction of the carpet 4.
  • the sanding assembly 3 includes a set of five rollers, respectively indicated at 10,11,12,13 and 14, which are all mounted conventionally on a frame 9 with their axes parallel to one another and to the plane defined by the working run 4a of the carpet conveyor 4.
  • rollers 10 and 11 are positioned directly above the working run 4a and are driven through a gear motor 17 and its related belt drive 16.
  • rollers 10 and 11 One end of the rollers 10 and 11 is journalled on a plate 18 which is attached to the frame 9 removably by screw fastening means 19, known per se.
  • the rollers 12 and 13 are mounted idly on a yoke-like holder 20.
  • Said holder 20 is carried on a beam 21 belonging to the frame 9 with the intermediary of a fluid-operated cylinder 22.
  • the roller 14 is mounted idly on a holder 23 carried by the frame 9 through a fluid-operated cylinder 24.
  • an endless flat drive belt 25 preferably of the laminated type.
  • an endless abrasive belt 26 overlapping the belt 25 with the section extending between the rollers 10 and 11.
  • Said belts 25,26 are kept under working tension by the fluid-operated cylinders 22,24.
  • the pressure device 30 is known per se, extends parallel to the rollers 10-14, and comprises a plurality of independent operation shoes 31.
  • a seal lined with a low frictional coefficient material such as a graphite based material.
  • suction devices Upstream and downstream of the sanding assembly 3, and above the rollers 12,13, there are provided suction devices, comprehensively indicated at 35 and being each provided with nozzles 36 oriented over the abrasive belt 26 to remove dust and chips from the sanding of a panel 5.
  • the wheels 37 are spring mounted rotatably and independently. They have all rotation axes parallel and perpendicular to the direction F.
  • This arrangement enables a panel 5 being processed to be held, even if of a small size, firmly adhered to the carpet 4 against the shear forces which are generated during the smooth sanding process and directed obliquely to the direction of transport of the panel.
  • the wheels 37 also function, in quite a conventional manner, as feelers to control the shoes 31.
  • the sanding assembly 3 is mounted at an angle from the perpendicular to the longitudinal direction of the carpet conveyor 4.
  • This inclined setting as expressed in terms of the angle K formed between the axis of one of the rollers 10-14, or likewise, between the longitudinal direction of the pressure device 30 and the longitudinal direction of the carpet conveyor 4 (arrow F), is within the range of about 80° to about 89°.
  • a panel 5 being processed would be fed to the sanding assembly 3 in the direction of the arrow F.
  • the abrasive belt 26 is driven from the gear motor 17 at a desired working speed.
  • the abrasive belt 26 is held, at the pressure device 30, pressed against the top surface of the panel 5, the panel being moved in one one with the run 4a of the carpet 4 on account of the pressure force applied to it by the wheels 37.
  • the smooth sander of this invention solves the problem set forth, and affords a number of advantages over comparable conventional machines.
  • it ensures high quality finish of the panels even where relatively coarse grit belts are employed, with great savings in terms of belt ; consumption.
  • any sanding marks left by lumps of the abrasive are obliterated from the smooth sanded panels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP86830292A 1985-10-22 1986-10-09 Breitbandschleifmaschine Ceased EP0225296A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2257585 1985-10-22
IT22575/85A IT1186012B (it) 1985-10-22 1985-10-22 Macchina levigatrice a nastro largo

Publications (1)

Publication Number Publication Date
EP0225296A1 true EP0225296A1 (de) 1987-06-10

Family

ID=11198001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86830292A Ceased EP0225296A1 (de) 1985-10-22 1986-10-09 Breitbandschleifmaschine

Country Status (3)

Country Link
EP (1) EP0225296A1 (de)
ES (1) ES2003740A6 (de)
IT (1) IT1186012B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0426626A2 (de) * 1989-10-31 1991-05-08 Dmc S.P.A. Schleifmaschine mit breitem Band
GB2240067A (en) * 1989-12-05 1991-07-24 Shaw Timber Limited Apparatus for removing a surface layer from a piece of material
WO2003018255A1 (en) * 2001-08-22 2003-03-06 Grobi As An apparatus for edge grinding of plates
EP2251139A2 (de) * 2009-05-13 2010-11-17 bauerrichter Maschinen- und technischer Großhandel GmbH & Co. KG Poliermaschine mit Polierband und Andruckeinrichtung
KR101073220B1 (ko) 2004-03-30 2011-10-12 주식회사 포스코 연마설비의 콘택트롤 각도 조절장치
EP2965864A1 (de) * 2014-07-10 2016-01-13 E.M.C. S.r.l. Schleifvorrichtung
IT201600111364A1 (it) * 2016-11-04 2018-05-04 Infinititech Srl Apparecchiatura per la lavorazione superficiale di elementi lastriformi
CN115125692A (zh) * 2022-06-30 2022-09-30 义乌市爱啦家纺有限公司 一种应用于床上四件套磨毛面料生产的磨毛机

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091313B (de) * 1958-06-18 1960-10-20 Ernst Carstens Maschinenfabrik Vorrichtung zur Bearbeitung der Oberflaechen von Werkstuecken aus Holz od. dgl. Stoffen im Schleifverfahren
US3269065A (en) * 1963-12-23 1966-08-30 Charles R Tidland Sanding apparatus
FR1477901A (fr) * 1965-04-27 1967-04-21 Castelli Sas Anonima Machine à polir les surfaces en bois, matière plastique ou similaire
US3374583A (en) * 1965-09-20 1968-03-26 Walter Jacobi & Sons Inc Apparatus for finishing surfaces
DE1995881U (de) * 1968-07-01 1968-10-31 Widu Duttine Ohg Schleifmaschine fuer einen einseitigen oder beiderseitigen wahlweisen quer- oder laengsachliff von werkstuecken.
DE1995879U (de) * 1968-05-15 1968-10-31 Richard Staehle Kg Maschb Fa Bandschleifmaschine mit 4 versetzt und gegenueberliegend angeordneten banoschleifeinheiten fuer beidseitiges vor- und fertigschleifen, insbesondere zum schleifen von fensterfluegel, rahmen, bekleidungen und tueren aus holz, leichtemetall und kunsts
GB1142731A (en) * 1966-02-16 1969-02-12 Carborundum Co Belt sanding and polishing machine
GB1249785A (en) * 1969-09-25 1971-10-13 Timesavers Sanders Method and apparatus for effecting sanding
DE7912841U1 (de) * 1978-05-09 1979-08-02 Vichi, Ettore, Pesaro (Italien) Automatische bandschleifmaschine
DE3029591A1 (de) * 1979-08-14 1981-03-26 Ulrich Steinemann Ag Maschinenfabrik, St. Gallen Bandschleifmaschine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091313B (de) * 1958-06-18 1960-10-20 Ernst Carstens Maschinenfabrik Vorrichtung zur Bearbeitung der Oberflaechen von Werkstuecken aus Holz od. dgl. Stoffen im Schleifverfahren
US3269065A (en) * 1963-12-23 1966-08-30 Charles R Tidland Sanding apparatus
FR1477901A (fr) * 1965-04-27 1967-04-21 Castelli Sas Anonima Machine à polir les surfaces en bois, matière plastique ou similaire
US3374583A (en) * 1965-09-20 1968-03-26 Walter Jacobi & Sons Inc Apparatus for finishing surfaces
GB1142731A (en) * 1966-02-16 1969-02-12 Carborundum Co Belt sanding and polishing machine
DE1995879U (de) * 1968-05-15 1968-10-31 Richard Staehle Kg Maschb Fa Bandschleifmaschine mit 4 versetzt und gegenueberliegend angeordneten banoschleifeinheiten fuer beidseitiges vor- und fertigschleifen, insbesondere zum schleifen von fensterfluegel, rahmen, bekleidungen und tueren aus holz, leichtemetall und kunsts
DE1995881U (de) * 1968-07-01 1968-10-31 Widu Duttine Ohg Schleifmaschine fuer einen einseitigen oder beiderseitigen wahlweisen quer- oder laengsachliff von werkstuecken.
GB1249785A (en) * 1969-09-25 1971-10-13 Timesavers Sanders Method and apparatus for effecting sanding
DE7912841U1 (de) * 1978-05-09 1979-08-02 Vichi, Ettore, Pesaro (Italien) Automatische bandschleifmaschine
DE3029591A1 (de) * 1979-08-14 1981-03-26 Ulrich Steinemann Ag Maschinenfabrik, St. Gallen Bandschleifmaschine

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0426626A2 (de) * 1989-10-31 1991-05-08 Dmc S.P.A. Schleifmaschine mit breitem Band
EP0426626A3 (de) * 1989-10-31 1991-07-10 Dmc S.P.A. Schleifmaschine mit breitem Band
US5094036A (en) * 1989-10-31 1992-03-10 Dmc S.P.A. Wide-belt sander machine
GB2240067A (en) * 1989-12-05 1991-07-24 Shaw Timber Limited Apparatus for removing a surface layer from a piece of material
WO2003018255A1 (en) * 2001-08-22 2003-03-06 Grobi As An apparatus for edge grinding of plates
KR101073220B1 (ko) 2004-03-30 2011-10-12 주식회사 포스코 연마설비의 콘택트롤 각도 조절장치
EP2251139A2 (de) * 2009-05-13 2010-11-17 bauerrichter Maschinen- und technischer Großhandel GmbH & Co. KG Poliermaschine mit Polierband und Andruckeinrichtung
EP2965864A1 (de) * 2014-07-10 2016-01-13 E.M.C. S.r.l. Schleifvorrichtung
WO2016005918A1 (en) * 2014-07-10 2016-01-14 E.M.C. S.R.L. Sanding machine.
US10124460B2 (en) 2014-07-10 2018-11-13 E.M.C. S.R.L. Sanding machine
IT201600111364A1 (it) * 2016-11-04 2018-05-04 Infinititech Srl Apparecchiatura per la lavorazione superficiale di elementi lastriformi
WO2018083571A1 (en) * 2016-11-04 2018-05-11 Infinititech Srl Equipment for surface processing of plate-shaped elements
CN115125692A (zh) * 2022-06-30 2022-09-30 义乌市爱啦家纺有限公司 一种应用于床上四件套磨毛面料生产的磨毛机

Also Published As

Publication number Publication date
ES2003740A6 (es) 1988-11-16
IT8522575A0 (it) 1985-10-22
IT1186012B (it) 1987-11-18

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): DE NL SE

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Effective date: 19871203

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Owner name: DMC S.P.A.

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Effective date: 19900312

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Inventor name: TASSONI, VITTORIO