EP2241401A1 - Belt sanding machine - Google Patents
Belt sanding machine Download PDFInfo
- Publication number
- EP2241401A1 EP2241401A1 EP10159867A EP10159867A EP2241401A1 EP 2241401 A1 EP2241401 A1 EP 2241401A1 EP 10159867 A EP10159867 A EP 10159867A EP 10159867 A EP10159867 A EP 10159867A EP 2241401 A1 EP2241401 A1 EP 2241401A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sanding
- machine
- unit
- guiding element
- sanding unit
- 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
Links
Images
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
- B24B21/008—Machines comprising two or more tools or having several working posts
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
- B24B41/047—Grinding heads for working on 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
- B24B7/28—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
Definitions
- the invention relates to a sanding machine for sanding pieces made of wood or similar materials and/or of metal or similar materials and/or of plastics or similar materials.
- Sanding machines are known comprising a frame supporting a conveying belt arranged for conveying pieces to be sanded along an advancement direction.
- These sanding machines further comprise one or more transverse sanding units and/or one or more longitudinal sanding units arranged in sequence along the advancement direction.
- the transverse sanding units each comprise a pair of belts: a first inner supporting belt, or lamellar belt, and a second more external belt, or abrasive belt for sanding the pieces.
- Such belts are wound in a loop around movement rollers and are moved transversely to the aforesaid advancement direction so as to sand the workpieces transversely to the latter.
- the aforesaid longitudinal sanding units each comprise an abrasive belt wound in a loop around respective movement rollers and moved by the latter parallelly to the aforesaid advancement direction so as to sand the workpieces parallelly to the latter.
- One drawback of known sanding machines is that the operations of replacing the aforesaid belts, in particular the belts of the transverse sanding units positioned in the first or last position with respect to the machine inlet or interposed between another two sanding units, are uneasy and laborious, this entailing long machine downtime and consequently reducing the productivity of the sanding machine.
- One object of the invention is to improve sanding machines.
- a further object is to provide sanding machines that enable the abrasive belts to be replaced simply and rapidly.
- Another further object is to obtain sanding machines that are not very bulky.
- the invention provides a sanding machine as defined in the independent claim 1.
- said slidable connecting means enables, during a replacement step, said sanding units to be extracted from the sanding machine so as to make said sanding means easily accessible for an operator.
- a sanding machine 10 for sanding pieces which are not shown, made of wood or similar materials and/or of metal or similar materials and/or of plastics or similar materials.
- the sanding machine 10 comprises a frame 11 supporting a conveyor belt 12 arranged for conveying the pieces to be sanded along an advancement direction A.
- the sanding machine 10 further comprises a transverse sanding unit 13 and a pair of longitudinal sanding units 31, 32 arranged in sequence along the advancement direction A.
- the transverse sanding unit 13 is interposed between the pair of longitudinal sanding units 31, 32.
- transverse sanding units and/or one or more longitudinal sanding units arranged in sequence, with any arrangement, along the advancement direction.
- the transverse sanding unit 13 is of known type and, for this reason, is disclosed briefly with reference to Figures 1 and 4 .
- the transverse sanding unit 13 comprises a further frame 14 rotatably supporting a plurality of rollers 15, 16, 17 and 18 positioned, at a retracted position R ( Figure 1 ) of the transverse sanding unit 13, above the conveyor belt 12, and having respective axes extending substantially parallelly to the advancement direction A.
- the transverse sanding unit 13 comprises a first roller 15, a second roller 16, a third roller 17 and a fourth roller 18.
- the first roller 15, the second roller 16 and the third roller 17 tension and move a supporting belt 19, or lamellar belt, which is not disclosed below as it is of known type, closed in a loop on the first roller 15, on the second roller 16 and on the third roller 17.
- first roller 15, the second roller 16 and the fourth roller 18 tension and move an abrasive belt 20, closed as a loop on the first roller 15, on the second roller 16 and on the fourth roller 18, the abrasive belt 20 being arranged outside the supporting belt 19.
- the transverse sanding unit 13 further comprises a pressing device 21, arranged for exerting suitable pressure on a portion of the abrasive belt 20 in the direction of the conveyor belt 12 so as to exert greater or lesser sanding pressure on the pieces to be machined.
- the pressing device 21 is arranged transversely to the advancement direction A and is divided into a plurality of pad blocks that are not shown that are adjacent to one another.
- the pad blocks are drivable independently one from the other so as to each press a portion of the abrasive belt 20 with a different pressing force.
- a single pressing element, or pad can be provided.
- the transverse sanding unit 13 further comprises a motor 22 for rotating one of the rollers 15, 16, 17, 18 so as to move the abrasive belt 20 and the supporting belt 19 transversely, in particular perpendicularly to the advancement direction A so as to sand the pieces transversely, in particular perpendicularly, to the latter.
- the aforesaid longitudinal sanding units 31, 32 are disclosed briefly inasmuch as they are of known type.
- these longitudinal sanding units 31, 32 each comprise a respective abrasive belt 23, 24 wound as a loop around respective movement rollers 25, 26 and moved by the movement rollers 25, 26 parallelly to the advancement direction A so as to sand the pieces parallelly to advancement direction A.
- the sanding machine 10 further comprises slidable connecting means 27, shown with greater detail in Figure 2 , arranged for slidably connecting the transverse sanding unit 13 to the sanding machine 10.
- the slidable connecting means 27 enables the transverse sanding unit 13 to be moved along a movement direction M that is substantially horizontal and perpendicular to the advancement direction A, between the retracted position R ( Figures 1 and 3 ) in which the transverse sanding unit 13, and with it the belts 19 and 20, is positioned inside the sanding machine 10 for sanding the aforesaid pieces, and an extracted position E ( Figures 4 and 5 ) in which the transverse sanding unit 13, and with it the belts 19 and 20, exits, at least partially, from the sanding machine 10 to enable the belts 19 and 20 to be replaced.
- la movement direction M is substantially vertical and perpendicular to the advancement direction A.
- the aforesaid slidable connecting means 27 comprises a first telescopic guide 28 and a second telescopic guide 29 positioned on opposite sides of the transverse sanding unit 13.
- the first telescopic guide 28 and second telescopic guide 29 each comprise a respective first fixed guiding element 33, 34.
- the first guiding elements 33 and 34 which are substantially parallel to one another, extend substantially parallelly to the movement direction M.
- first guiding elements 33, 34 are fixed to opposite portions of a supporting frame 35 ( Figure 4 ) of the sanding machine 10.
- the supporting frame 35 extends substantially parallelly to the movement direction M and has the shape of an upturned 'U'.
- the first telescopic guide 28 and the second telescopic guide 29 each comprise a respective second guiding element 36, 37, that is movable with respect to the corresponding first guiding element 33, 34 along the movement direction M.
- the second guiding elements 36, 37 which are substantially parallel to one another, extend substantially parallelly to the movement direction M and are operationally positioned below the respective first guiding elements 33, 34.
- second guiding elements 36, 37 are fixed to opposite portions of the further frame 14 of the transverse sanding unit 13.
- the first telescopic guide 28 and the second telescopic guide 29 each comprise a respective intermediate guiding element 38, 39, having, for example, an S-shaped section.
- Each intermediate guiding element 38, 39 is interposed between the corresponding fixed guiding element 33, 34 and the second guiding element 36, 37 and is slidably connected to the corresponding first guiding element 33, 34 and to the second guiding element 36, 37.
- the aforesaid transverse sanding unit 13 further comprises a handle 40 fixed to the further frame 14, to enable an operator to move the transverse sanding unit 13 between the retracted position R and the extracted position E.
- actuating means for example comprising a pneumatic or electric or hydraulic actuator, to move the transverse sanding unit 13 between the retracted position R and the extracted position E.
- further slidable connecting means is provided for slidably connecting the sanding machine 10 to the longitudinal sanding units 31, 32 for example to facilitate replacing the belts 23, 24, or to promote other maintenance operations.
- the invention disclosed above enables the belts 19, 20 of the transverse sanding unit 13 to be replaced easily and quickly, in particular the belts 19, 20 of the transverse sanding units positioned in the first or last position with respect to an inlet of the sanding machine 10 or interposed between another two sanding units 31, 32.
- the slidable connecting means 27 enables, during a replacement step, the transverse sanding unit 13 to be extracted from the sanding machine 10 so as to make the belts 19, 20 easily accessible for and easily replaceable by an operator.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Holo Graphy (AREA)
- Shovels (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
- The invention relates to a sanding machine for sanding pieces made of wood or similar materials and/or of metal or similar materials and/or of plastics or similar materials. Sanding machines are known comprising a frame supporting a conveying belt arranged for conveying pieces to be sanded along an advancement direction.
- These sanding machines further comprise one or more transverse sanding units and/or one or more longitudinal sanding units arranged in sequence along the advancement direction.
- The transverse sanding units each comprise a pair of belts: a first inner supporting belt, or lamellar belt, and a second more external belt, or abrasive belt for sanding the pieces.
- Such belts are wound in a loop around movement rollers and are moved transversely to the aforesaid advancement direction so as to sand the workpieces transversely to the latter.
- The aforesaid longitudinal sanding units each comprise an abrasive belt wound in a loop around respective movement rollers and moved by the latter parallelly to the aforesaid advancement direction so as to sand the workpieces parallelly to the latter.
- One drawback of known sanding machines is that the operations of replacing the aforesaid belts, in particular the belts of the transverse sanding units positioned in the first or last position with respect to the machine inlet or interposed between another two sanding units, are uneasy and laborious, this entailing long machine downtime and consequently reducing the productivity of the sanding machine.
- In fact, in order to perform the aforesaid operations it is necessary for two operators to be positioned to the side of the machine tool, to insert hands and arms inside the sanding machine and extract/insert respectively the used/new belts.
- A further drawback of known sanding machines is that they are very bulky.
- This is due to the fact that the sanding units have to be suitably spaced apart from one another so as to enable operators to insert their hands and arms to perform the aforesaid operations of replacing belts.
- One object of the invention is to improve sanding machines. A further object is to provide sanding machines that enable the abrasive belts to be replaced simply and rapidly. Another further object is to obtain sanding machines that are not very bulky.
- The invention provides a sanding machine as defined in the independent claim 1.
- Owing to the invention, it is possible to make a sanding machine that enables said sanding means to be replaced easily and fast, in particular the sanding means of the transverse sanding units positioned in the first or last position with respect to an inlet of the sanding machine or interposed between another two sanding units.
- In fact, said slidable connecting means enables, during a replacement step, said sanding units to be extracted from the sanding machine so as to make said sanding means easily accessible for an operator.
- Further, this makes the sanding machine according to the invention not very bulky, i.e. more compact than known sanding machines.
- It is in fact no longer necessary to space apart the sanding units to enable an operator to replace said sanding means. The invention can be better understood and implemented with reference to the attached drawings that illustrate an embodiment thereof by way of non-limiting example, in which:
-
Figure 1 is a schematic side view of the sanding machine according to the invention including a sanding unit in a retracted position and with some details removed to highlight others better; -
Figure 2 is an enlarged detail ofFigure 1 ; -
Figure 3 is a perspective view of the sanding machine of -
Figure 1 with some details removed to highlight others better; -
Figure 4 is a view like that ofFigure 3 with the sanding unit in an extracted position; -
Figure 5 is a front view with the sanding unit in an extracted position. - With reference to
Figure 1 there is shown asanding machine 10 for sanding pieces, which are not shown, made of wood or similar materials and/or of metal or similar materials and/or of plastics or similar materials. - The
sanding machine 10 comprises aframe 11 supporting aconveyor belt 12 arranged for conveying the pieces to be sanded along an advancement direction A. - The
sanding machine 10 further comprises atransverse sanding unit 13 and a pair oflongitudinal sanding units transverse sanding unit 13 is interposed between the pair oflongitudinal sanding units - In an embodiment of the invention, which is not shown, it is possible to have a different arrangement of the
transverse sanding unit 13 and of the pair oflongitudinal sanding units - In a further embodiment of the invention, which is not shown, it is possible to have one or more transverse sanding units and/or one or more longitudinal sanding units arranged in sequence, with any arrangement, along the advancement direction.
- In another embodiment of the invention, which is not shown, it is possible to have, in addition to, or instead of the aforesaid longitudinal sanding units, roller sanding units and/or tangential-disc sanding units.
- The
transverse sanding unit 13 is of known type and, for this reason, is disclosed briefly with reference toFigures 1 and4 . - The
transverse sanding unit 13 comprises afurther frame 14 rotatably supporting a plurality ofrollers Figure 1 ) of thetransverse sanding unit 13, above theconveyor belt 12, and having respective axes extending substantially parallelly to the advancement direction A. - In particular, the
transverse sanding unit 13 comprises afirst roller 15, asecond roller 16, athird roller 17 and afourth roller 18. - The
first roller 15, thesecond roller 16 and thethird roller 17 tension and move a supportingbelt 19, or lamellar belt, which is not disclosed below as it is of known type, closed in a loop on thefirst roller 15, on thesecond roller 16 and on thethird roller 17. - On the other hand, the
first roller 15, thesecond roller 16 and thefourth roller 18 tension and move anabrasive belt 20, closed as a loop on thefirst roller 15, on thesecond roller 16 and on thefourth roller 18, theabrasive belt 20 being arranged outside the supportingbelt 19. - The
transverse sanding unit 13 further comprises apressing device 21, arranged for exerting suitable pressure on a portion of theabrasive belt 20 in the direction of theconveyor belt 12 so as to exert greater or lesser sanding pressure on the pieces to be machined. - In particular, the
pressing device 21 is arranged transversely to the advancement direction A and is divided into a plurality of pad blocks that are not shown that are adjacent to one another. - The pad blocks are drivable independently one from the other so as to each press a portion of the
abrasive belt 20 with a different pressing force. - Alternatively to the aforesaid independent pad blocks, a single pressing element, or pad, can be provided.
- The
transverse sanding unit 13 further comprises amotor 22 for rotating one of therollers abrasive belt 20 and the supportingbelt 19 transversely, in particular perpendicularly to the advancement direction A so as to sand the pieces transversely, in particular perpendicularly, to the latter. The aforesaidlongitudinal sanding units - In particular, these
longitudinal sanding units abrasive belt respective movement rollers movement rollers - The
sanding machine 10 further comprises slidable connecting means 27, shown with greater detail inFigure 2 , arranged for slidably connecting thetransverse sanding unit 13 to thesanding machine 10. - In particular, the slidable connecting means 27 enables the
transverse sanding unit 13 to be moved along a movement direction M that is substantially horizontal and perpendicular to the advancement direction A, between the retracted position R (Figures 1 and3 ) in which thetransverse sanding unit 13, and with it thebelts sanding machine 10 for sanding the aforesaid pieces, and an extracted position E (Figures 4 and5 ) in which thetransverse sanding unit 13, and with it thebelts sanding machine 10 to enable thebelts - In an embodiment of the invention, which is not shown, la movement direction M is substantially vertical and perpendicular to the advancement direction A.
- It should be noted how in the extracted position E the
transverse sanding unit 13 is mounted in a cantilevered manner on thesanding machine 10, thus enabling thebelts - The aforesaid slidable connecting means 27 comprises a first
telescopic guide 28 and a secondtelescopic guide 29 positioned on opposite sides of thetransverse sanding unit 13. - The first
telescopic guide 28 and secondtelescopic guide 29 each comprise a respective first fixed guidingelement - The first guiding
elements - Further, the first guiding
elements Figure 4 ) of thesanding machine 10. - In particular, the supporting
frame 35 extends substantially parallelly to the movement direction M and has the shape of an upturned 'U'. - The first
telescopic guide 28 and the secondtelescopic guide 29 each comprise a respective second guidingelement element guiding elements elements - Further, the second guiding
elements further frame 14 of thetransverse sanding unit 13. - The first
telescopic guide 28 and the secondtelescopic guide 29 each comprise a respective intermediate guidingelement element element element element element - In this manner the intermediate guiding
elements - The aforesaid
transverse sanding unit 13 further comprises ahandle 40 fixed to thefurther frame 14, to enable an operator to move thetransverse sanding unit 13 between the retracted position R and the extracted position E. - In an embodiment of the invention, which is not shown, actuating means is provided, for example comprising a pneumatic or electric or hydraulic actuator, to move the
transverse sanding unit 13 between the retracted position R and the extracted position E. - In another embodiment of the invention, which is not shown, further slidable connecting means is provided for slidably connecting the
sanding machine 10 to thelongitudinal sanding units belts - In use, when it is desired to replace the
belts transverse sanding unit 13 it is sufficient to extract thetransverse sanding unit 13 from thesanding machine 10 by thehandle 40. - Once the
belts 19 and/or 20 have been replaced and/or the aforesaid maintenance operations have been performed it is sufficient to reposition thetransverse sanding unit 13 inside thesanding machine 10 by means of thehandle 40. - It should be noted how the invention disclosed above enables the
belts transverse sanding unit 13 to be replaced easily and quickly, in particular thebelts sanding machine 10 or interposed between another twosanding units - In fact, the slidable connecting means 27 enables, during a replacement step, the
transverse sanding unit 13 to be extracted from the sandingmachine 10 so as to make thebelts - This moreover makes the sanding
machine 10 according to the invention not very bulky, i.e. more compact than known sanding machines. - In fact, it is no longer necessary to space the sanding
units belts
Claims (16)
- Sanding machine (10) comprising a sanding unit (13; 31; 32) provided with sanding means (19, 20; 23; 24) for sanding said pieces, characterised in that it comprises slidable connecting means (27) for slidably connecting said sanding unit (13; 31; 32) to said sanding machine (10) so that said sanding unit (13; 31; 32) is movable between a retracted position (R) in which said sanding means (19, 20; 23; 24) is positioned inside said sanding machine (10) for sanding said pieces and an extracted position (E) in which said sanding means (19, 20; 23; 24) exits, at least partially, from said sanding machine (10) to be able to be replaced.
- Machine (10) according to claim 1, wherein said slidable connecting means (27) defines a movement direction (M) of said sanding unit (13; 31; 32) that is transverse, in particular substantially perpendicular, to an advancement direction (A) of said pieces.
- Machine (10) according to claim 2, wherein said movement direction (M) is substantially horizontal.
- Machine (10) according to any preceding claim, wherein in said extracted position (E) said sanding unit (13; 31; 32) is mounted cantilevered on said sanding machine (10).
- Machine (10) according to any preceding claim, wherein said slidable connecting means (27) comprises at least a telescopic guide (28; 29).
- Machine (10) according to claim 5, wherein said at least a telescopic guide (28; 29) comprises a first guiding element (33; 34) that is fixed and mounted on a supporting frame (35) of said machine (10).
- Machine (10) according to claim 6, wherein said at least a telescopic guide (28; 29) comprises a second guiding element (36; 37), that is slidable with respect to said first guiding element (33; 34), fixed to a further supporting frame (14) of said sanding unit (13; 31; 32).
- Machine (10) according to claim 7, wherein said at least a telescopic guide (28; 29) comprises an intermediate guiding element (38; 39) interposed between said first guiding element (33; 34) and said second guiding element (36; 37), said intermediate element (38; 39) being slidably connected to said first guiding element (33; 34) and to said second guiding element (36; 37).
- Machine (10) according to claim 8, wherein said intermediate guiding element (38; 39) has an S-shaped section.
- Machine (10) according to any preceding claim, wherein said slidable connecting means (27) comprises a pair of telescopic guides (28, 29) positioned on opposite sides of said sanding unit (13; 31; 32).
- Machine (10) according to any preceding claim, wherein said sanding means (19, 20; 23; 24) comprises an abrasive belt (20; 23; 24).
- Machine (10) according to any preceding claim, wherein said sanding unit (13; 31; 32) comprises a plurality of rollers (15, 16, 17, 18; 25; 26) for rotatably supporting said sanding means (19, 20; 23; 24).
- Machine (10) according to any preceding claim, wherein said sanding unit (13; 31; 32) comprises a motor (22) for rotating at least one of said rollers (15, 16, 17, 18; 25; 26).
- Machine (10) according to any preceding claim, wherein said sanding unit (13; 31; 32) comprises handle means (40) for moving said sanding unit (13; 31; 32) between said retracted position (R) and said extracted position (E).
- Machine (10) according to any one of claims 1 to 13, and comprising actuating means for moving said sanding unit (13; 31; 32) between said retracted position (R) and said extracted position (E).
- Machine (10) according to any preceding claim, wherein said sanding unit (13; 31; 32) is a transverse sanding unit (13) arranged for sanding said pieces transversely with respect to said advancement direction (A).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMO2009A000090A IT1394079B1 (en) | 2009-04-15 | 2009-04-15 | MILLING MACHINE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2241401A1 true EP2241401A1 (en) | 2010-10-20 |
EP2241401B1 EP2241401B1 (en) | 2012-03-14 |
Family
ID=41348983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10159867A Expired - Fee Related EP2241401B1 (en) | 2009-04-15 | 2010-04-14 | Belt sanding machine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2241401B1 (en) |
AT (1) | ATE549123T1 (en) |
IT (1) | IT1394079B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107309748A (en) * | 2017-07-19 | 2017-11-03 | 广州宏曦能源科技有限公司 | Casing sander |
EP4321296A1 (en) * | 2022-08-08 | 2024-02-14 | SCM Group S.p.A. | Improved sanding machine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104985497B (en) * | 2015-07-23 | 2017-04-26 | 福建省尤溪县红树林木业有限公司 | Sanding machine with improved structure |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040087261A1 (en) * | 2002-11-01 | 2004-05-06 | Wang Wang Tien | Sand-belt finishing machine having a sand-belt replacement mechanism |
-
2009
- 2009-04-15 IT ITMO2009A000090A patent/IT1394079B1/en active
-
2010
- 2010-04-14 AT AT10159867T patent/ATE549123T1/en active
- 2010-04-14 EP EP10159867A patent/EP2241401B1/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040087261A1 (en) * | 2002-11-01 | 2004-05-06 | Wang Wang Tien | Sand-belt finishing machine having a sand-belt replacement mechanism |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107309748A (en) * | 2017-07-19 | 2017-11-03 | 广州宏曦能源科技有限公司 | Casing sander |
EP4321296A1 (en) * | 2022-08-08 | 2024-02-14 | SCM Group S.p.A. | Improved sanding machine |
Also Published As
Publication number | Publication date |
---|---|
ATE549123T1 (en) | 2012-03-15 |
EP2241401B1 (en) | 2012-03-14 |
ITMO20090090A1 (en) | 2010-10-16 |
IT1394079B1 (en) | 2012-05-25 |
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