EP1932619A1 - An apparatus for distressing solid objects comprising a drum - Google Patents

An apparatus for distressing solid objects comprising a drum Download PDF

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Publication number
EP1932619A1
EP1932619A1 EP07023922A EP07023922A EP1932619A1 EP 1932619 A1 EP1932619 A1 EP 1932619A1 EP 07023922 A EP07023922 A EP 07023922A EP 07023922 A EP07023922 A EP 07023922A EP 1932619 A1 EP1932619 A1 EP 1932619A1
Authority
EP
European Patent Office
Prior art keywords
drum
axis
distressing
symmetry
rotation
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
EP07023922A
Other languages
German (de)
French (fr)
Other versions
EP1932619B1 (en
Inventor
Tomasino Fontana
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.)
M.F. DI FONTANA TOMASINO
Original Assignee
Mfsrl
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Filing date
Publication date
Application filed by Mfsrl filed Critical Mfsrl
Publication of EP1932619A1 publication Critical patent/EP1932619A1/en
Application granted granted Critical
Publication of EP1932619B1 publication Critical patent/EP1932619B1/en
Not-in-force 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
    • B24B31/023—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels with tiltable axis
    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
    • B24B31/0212—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels the barrels being submitted to a composite rotary movement

Definitions

  • the invention relates to an apparatus for distressing solid objects, such as for example ceramic glazes, masonry, stone, wood; and also articles made of cast materials such as bronze and stainless steel.
  • the distressing operation gives the piece a particular surface abrasion, and be used for example for deburring cast pieces, obtaining smooth surfaces free of burrs; or, if a deeper operation is performed, for giving a surface a particular surface roughness, an effect which is especially appreciated in covering materials, which gain a worn and antiquated appearance because of the lack of sharp edges it leaves, and for the "lived-in" look of the surfaces produced.
  • This lived-in or aged look is obtained in nature by a long period spent on a river bed.
  • the prior art includes using mills substantially constituted by a trunco-cylindrical drum, quite broad, which is partially filled with a mixture of spheres, or balls, made of a hard material (such as silicon, or treated alubit) and water, and rotated according to the axis of symmetry of the cylinder for a certain time, such as to reduce the pieces introduced therein to powder, thanks to the cyclic motion of revolution, contact and rubbing of the materials contained.
  • a hard material such as silicon, or treated alubit
  • the drum For more fragile pieces it is preferred to fill the drum with water, dispensing with the presence of spheres or balls made of a hard material, and proceeding to rotate the drum by means of an external motor, for a certain time.
  • the product to be treated is introduced into the drum through a sealed hatch and distressed for a certain time, perhaps multiples of ten minutes, according to the characteristics of the product (harder or less hard), and the surface effect desired.
  • the known apparatus for distressing exhibit some drawbacks.
  • the aim of the present invention is to obviate the above-mentioned drawbacks, by providing an apparatus which is able to distress correctly, even operating on solid bodies in which the length is prevalent with respect to the other two dimensions, with cycles having a particularly contained duration.
  • 1 denotes in its entirety an apparatus for distressing solid pieces, made according to the invention.
  • 2 denotes a sturdy base frame superiorly provided with two rolling supports 6 on which a drum 3 rotates according to an axis 10 thereof.
  • the axis 10 is preferably arranged horizontally.
  • the drum 3 is constituted by a trunco-cylindrical central part 4, and by two heads 5.
  • the internal wall of the drum 3 is covered with a known anti-abrasion material, such as for example panels made of a hard polyurethane.
  • the cylindrical part 4 is provided with a central axis of symmetry 11, which does not coincide with the rolling axis 10 of the drum 3.
  • the two axes 10 and 11 form an angle ⁇ , a value of which depends on the type of the material being worked.
  • the value of the angle ⁇ is comprised between 10 and 20 degrees; while for materials or pieces which are not fragile, such as for example cast pieces to be deburred, or for the milling of ceramic glazes, the value of angle ⁇ is comprised in the range from 30 to 40 degrees.
  • Motors 7 are provided, powered by an electric motor 8 controlled by a known-type electronic card which can vary the rotation speed continuously and freely.
  • a hatch 9 of known type is located on the wall of the drum 3 for introducing/evacuating the contents thereof, which are introduced discontinuously.
  • the drum After introducing the material to be distressed and closing the hatch 9, the drum is rotated according to the horizontal axis 10. As this axis does not coincide with the axis of symmetry of the drum 3, an oscillation of the drum 3 is produced which superposes the rotation movement.
  • Figure 2 shows the position of the drum 3 after half a revolution: note that in this position the inclination of the drum is inverted with respect to the start position.
  • the above-described apparatus can be used not only for distressing but also for milling, for example in the ceramic field, leading to important advantages also in the latter field.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)

Abstract

An apparatus for distressing solid products, such as ceramic and non-ceramic glazes, masonry, marble, strips for wainscoting, etc.; as well as casts of bronze, aluminium and stainless steel. The apparatus is constituted by a substantially trunco-cylindrical drum (3) rotating about an axis which is inclined with respect to the axis of symmetry of the drum (3).

Description

  • The invention relates to an apparatus for distressing solid objects, such as for example ceramic glazes, masonry, stone, wood; and also articles made of cast materials such as bronze and stainless steel.
  • The distressing operation gives the piece a particular surface abrasion, and be used for example for deburring cast pieces, obtaining smooth surfaces free of burrs; or, if a deeper operation is performed, for giving a surface a particular surface roughness, an effect which is especially appreciated in covering materials, which gain a worn and antiquated appearance because of the lack of sharp edges it leaves, and for the "lived-in" look of the surfaces produced.
  • This lived-in or aged look is obtained in nature by a long period spent on a river bed.
  • In an industrial context, to artificially reproduce this effect apparatus are used such as grinding ball mills in the ceramics field for pulverising frits, or glazes based on solid vitreous or ceramic materials.
  • The prior art includes using mills substantially constituted by a trunco-cylindrical drum, quite broad, which is partially filled with a mixture of spheres, or balls, made of a hard material (such as silicon, or treated alubit) and water, and rotated according to the axis of symmetry of the cylinder for a certain time, such as to reduce the pieces introduced therein to powder, thanks to the cyclic motion of revolution, contact and rubbing of the materials contained.
  • For more fragile pieces it is preferred to fill the drum with water, dispensing with the presence of spheres or balls made of a hard material, and proceeding to rotate the drum by means of an external motor, for a certain time.
  • In this situation the reciprocal contact of the pieces inside the drum causes erosion of the external surfaces of the pieces, thus obtaining the distressed effect.
  • The product to be treated is introduced into the drum through a sealed hatch and distressed for a certain time, perhaps multiples of ten minutes, according to the characteristics of the product (harder or less hard), and the surface effect desired.
  • The known apparatus for distressing exhibit some drawbacks.
  • Firstly, experience of this type of working with mills has shown that working long pieces, such as for example rods, baseboards, bars, leads to considerable waste or rejects, due to the breakage of the pieces caused by the particular revolution movement to which the pieces are subjected.
  • Secondly, in known distressing mills the working times for each cycle are generally rather long, thus limiting production potential.
  • The aim of the present invention is to obviate the above-mentioned drawbacks, by providing an apparatus which is able to distress correctly, even operating on solid bodies in which the length is prevalent with respect to the other two dimensions, with cycles having a particularly contained duration.
  • The aims are attained according to the indications of claim 1 and the relative dependent clauses, which are appended to the present description.
  • The invention will be more fully understood from the description that follows of an example of application thereof, illustrated by way of nonlimiting example in the accompanying figures of the drawings, in which:
    • figure 1 is a schematic lateral view of an apparatus made according to the invention, in the loading position of the material to be distressed;
    • figure 2 is the same apparatus in which the drum is rotated by 180° with respect to figure 1.
  • With reference to the figures of the drawings, 1 denotes in its entirety an apparatus for distressing solid pieces, made according to the invention.
    2 denotes a sturdy base frame superiorly provided with two rolling supports 6 on which a drum 3 rotates according to an axis 10 thereof.
  • The axis 10 is preferably arranged horizontally.
  • The drum 3 is constituted by a trunco-cylindrical central part 4, and by two heads 5.
  • The internal wall of the drum 3 is covered with a known anti-abrasion material, such as for example panels made of a hard polyurethane.
  • The cylindrical part 4 is provided with a central axis of symmetry 11, which does not coincide with the rolling axis 10 of the drum 3.
  • The two axes 10 and 11 form an angle α, a value of which depends on the type of the material being worked.
  • Consequently the supporting pivots of the drum 3 on the supports 6 are applied on the heads 5 asymmetrically, i.e. not coinciding with the central of the head.
  • By way of indication, for distressing fragile materials or pieces, the value of the angle α is comprised between 10 and 20 degrees; while for materials or pieces which are not fragile, such as for example cast pieces to be deburred, or for the milling of ceramic glazes, the value of angle α is comprised in the range from 30 to 40 degrees.
  • Motors 7 are provided, powered by an electric motor 8 controlled by a known-type electronic card which can vary the rotation speed continuously and freely.
  • A hatch 9 of known type is located on the wall of the drum 3 for introducing/evacuating the contents thereof, which are introduced discontinuously.
  • Functioning is as follows.
  • After introducing the material to be distressed and closing the hatch 9, the drum is rotated according to the horizontal axis 10. As this axis does not coincide with the axis of symmetry of the drum 3, an oscillation of the drum 3 is produced which superposes the rotation movement.
  • Figure 2 shows the position of the drum 3 after half a revolution: note that in this position the inclination of the drum is inverted with respect to the start position.
  • An oscillating movement of the drum follows during rotation thereof, which enables the above-cited aims to be attained.
  • The above-described apparatus can be used not only for distressing but also for milling, for example in the ceramic field, leading to important advantages also in the latter field.

Claims (4)

  1. An apparatus for distressing solid products, constituted by a trunco-cylindrical drum (3) developing along an axis of symmetry (11) and provided with a sealed hatch (9) for loading and unloading, and rotating according to a rotation axis (10), characterised in that a rotation axis (10) of the drum (3) does not coincide with an axis of symmetry (11) thereof.
  2. The apparatus of claim 1, characterised in that the rotation axis (10) and the axis of symmetry (11) form a reciprocal angle (α) which is comprised between 10° and 40°.
  3. The apparatus of claim 2, characterised in that supporting pivots of the drum (3) on rolling supports (6) thereof are applied on heads (5) of the drum (3) asymmetrically, i.e. not coinciding with a centre of the head (5).
  4. The apparatus of any one of claims 1, 2 or 3, characterised in that motors (7) causing the rotation of the drum (3) are powered by an electric motor controlled by an electronic card which can vary a rotation speed of the drum (3) as desired.
EP20070023922 2006-12-12 2007-12-11 An apparatus for distressing solid objects comprising a drum Not-in-force EP1932619B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRE20060150 ITRE20060150A1 (en) 2006-12-12 2006-12-12 EQUIPMENT FOR BREAKING

Publications (2)

Publication Number Publication Date
EP1932619A1 true EP1932619A1 (en) 2008-06-18
EP1932619B1 EP1932619B1 (en) 2012-08-08

Family

ID=39203256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070023922 Not-in-force EP1932619B1 (en) 2006-12-12 2007-12-11 An apparatus for distressing solid objects comprising a drum

Country Status (2)

Country Link
EP (1) EP1932619B1 (en)
IT (1) ITRE20060150A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105924233A (en) * 2016-04-29 2016-09-07 山东狮子王陶瓷科技有限公司 Peeling-glaze marble tile and preparation method thereof
CN106541328A (en) * 2016-11-23 2017-03-29 江苏神山风电设备制造有限公司 A kind of deburring cylinder mechanism
CN109262439A (en) * 2018-11-12 2019-01-25 李子涵 A burring device for agricultural implement
WO2024094257A1 (en) * 2022-11-02 2024-05-10 Continental Reifen Deutschland Gmbh Process for obtaining natural rubber

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115157101A (en) * 2022-08-25 2022-10-11 南通苏鲁达智能制造科技有限公司 Polishing machine for producing aluminum alloy handle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB685711A (en) 1950-03-29 1953-01-07 Vere Holdings Ltd Improvements in or relating to barrels for barrel polishing
DE3021771A1 (en) * 1980-06-10 1981-12-17 Max Spaleck Gmbh & Co Kg, 4290 Bocholt Barrel for abrasive or other treatment of workpieces in bulk - where lid can be moved slightly away from barrel to permit entry or exit of treatment media
DE8210783U1 (en) * 1982-04-16 1982-09-23 Zeidler, Franz, 8591 Bärnau DEVICE FOR POLISHING AND / OR GRINDING WORKPIECES
WO1997030832A1 (en) * 1996-02-26 1997-08-28 T.M. Tecnologie Meccaniche Di Volpe Remo Apparatus for quickly ageing building and furnishing materials such as stones, granite, marble, bricks, floorings, mosaics
JP2006055924A (en) * 2004-08-18 2006-03-02 Shin Etsu Chem Co Ltd Method for chamfering rare earth alloy

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB685711A (en) 1950-03-29 1953-01-07 Vere Holdings Ltd Improvements in or relating to barrels for barrel polishing
DE3021771A1 (en) * 1980-06-10 1981-12-17 Max Spaleck Gmbh & Co Kg, 4290 Bocholt Barrel for abrasive or other treatment of workpieces in bulk - where lid can be moved slightly away from barrel to permit entry or exit of treatment media
DE8210783U1 (en) * 1982-04-16 1982-09-23 Zeidler, Franz, 8591 Bärnau DEVICE FOR POLISHING AND / OR GRINDING WORKPIECES
WO1997030832A1 (en) * 1996-02-26 1997-08-28 T.M. Tecnologie Meccaniche Di Volpe Remo Apparatus for quickly ageing building and furnishing materials such as stones, granite, marble, bricks, floorings, mosaics
JP2006055924A (en) * 2004-08-18 2006-03-02 Shin Etsu Chem Co Ltd Method for chamfering rare earth alloy

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105924233A (en) * 2016-04-29 2016-09-07 山东狮子王陶瓷科技有限公司 Peeling-glaze marble tile and preparation method thereof
CN106541328A (en) * 2016-11-23 2017-03-29 江苏神山风电设备制造有限公司 A kind of deburring cylinder mechanism
CN109262439A (en) * 2018-11-12 2019-01-25 李子涵 A burring device for agricultural implement
WO2024094257A1 (en) * 2022-11-02 2024-05-10 Continental Reifen Deutschland Gmbh Process for obtaining natural rubber

Also Published As

Publication number Publication date
ITRE20060150A1 (en) 2008-06-13
EP1932619B1 (en) 2012-08-08

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