WO2006111496A1 - Dust collection container with rigid internal framework supporting an external filtering element for motorized tool with capacity of suction of the working dust. - Google Patents

Dust collection container with rigid internal framework supporting an external filtering element for motorized tool with capacity of suction of the working dust. Download PDF

Info

Publication number
WO2006111496A1
WO2006111496A1 PCT/EP2006/061562 EP2006061562W WO2006111496A1 WO 2006111496 A1 WO2006111496 A1 WO 2006111496A1 EP 2006061562 W EP2006061562 W EP 2006061562W WO 2006111496 A1 WO2006111496 A1 WO 2006111496A1
Authority
WO
WIPO (PCT)
Prior art keywords
dust
duct
filtering element
filtering
container
Prior art date
Application number
PCT/EP2006/061562
Other languages
French (fr)
Inventor
Guido Valentini
Original Assignee
Guido Valentini
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 Guido Valentini filed Critical Guido Valentini
Publication of WO2006111496A1 publication Critical patent/WO2006111496A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0046—Devices for removing chips by sucking
    • 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools

Definitions

  • the present invention concerns a dust collection container with rigid internal framework supporting an external filtering element for a motorized tool with capacity of suction of the working dust.
  • a common problem with this type of tools consists in the elimination of the working dusts, that for the most part get intaken through a duct which leads toward the outside.
  • Such bags are removable from the machine for their substitution and/or cleaning.
  • the patent application GB 2 343 393 describes a tool comprising a system for the extraction of the dust arranged inside its container which conveys the dust into a box for the collection of the dust.
  • the box for the collection of the dust has holes for the outlet of the air in the upper part of the box, transversally to the direction of the flow of air coming from the tool.
  • a filter is placed in the upper part of the box to correspond with the holes. Once saturated the filter gets replaced.
  • a tool comprising a system for the suction of dust and a container for the collection of dust.
  • Said container is made up of a preferably cylindrical envelope inside of which a filtering element is placed that is also preferably cylindrical, which can be mounted coaxial or be unframed with reference to the container and has a transversal (to the flow of air) extension slightly lower than said envelope.
  • the container has a duct for the inlet of air couplable to the tool and at least one duct for the outlet of air, that is closed by a plug whose opening allows to generate in combination with a suction device a cleaning flow of air for the same filtering element.
  • Object of the present invention is to provide a dust collection container that is efficient, offers an increased filtering capacity, is simple to assemble, light and easy to clean.
  • a dust collection container comprising a first duct for the inlet of air, a second duct for the outlet of air and filtering element, characterised in that said container has a rigid internal framework and said filtering element is arranged in removable way outside said framework and has an internal cavity for the collection of dust and an external filtering portion directly looking at the surrounding environment. It is thus possible to obtain a larger filtering surface, a more efficient circulation of the air with a lower total weight of the container.
  • the user can therefore use the motorized tool more easily and for longer times.
  • Figure 1 shows a sectioned side view of a tool provided with a dust collection container according to the present invention
  • Figure 2 shows a view in section according to the line II-II in Figure 1;
  • Figure 3 shows a view in section according to the line III-III in Figure 1;
  • Figure 4 shows a side section view of the dust container in Figure 1 with closed plug
  • Figure 5 shows a side section view of the dust container in Figure 1 with open plug
  • the tool shown in Figure 1 in the drawings is for example an orbital honing machine comprising a working head 1.
  • the working head 1 comprises a rigid external case 2, in which a set of driving mechanisms for an operating disc or back-up plate 3 (or as an alternative a plate with rectangular or triangular shape) is lodged.
  • the driving mechanisms comprise a driving shaft 4 which operates a fan 5 which has the task to intake the working dust and to send it toward a coupling tube 10.
  • the coupling tube 10 puts in communication the inside of the working head 1 with the external environment.
  • the coupling tube 10 preferably ends with a mouthpiece 11 provided with one seal packing 12.
  • a dust collection container 13 with axis inclined with reference to the working plane, which is made up of a rigid internal framework 30 couplable to a cylindrical external removable filtering element 22.
  • the internal framework 30 is shaped in such a way as to define a first duct 15 for the inlet of air connected with the mouthpiece 10, with which an internal connection element 31 is rigidly connected that is made up of connection plates 39 and of a terminal flange 32 suitable to couple with a closing element 33 and to form a second duct 24 for the outlet of air closed by a removable plug 17.
  • the filtering element 22 is made up of a cylindrical lateral filtering portion 34, of a dust collection cavity 35 and ends 36 couplable with - A -
  • housings 37 and 38 respectively of the internal framework 30 and of the closing element 33.
  • the dust accumulates in the bottom part of the cavity 35 inside the filtering element 22.
  • the suction force induced by said external vacuum means determines the origin of a secondary flow of air. External clean air enters through the external filtering portion 34 and it exits from the duct 24 thus dragging dust particles collected on said external filtering portion 34 which consequently gets partially cleaned.
  • the internal framework 30 allows to obtain several advantages:
  • the first duct 15 has a shape lengthened toward the inside of the cavity 35.
  • This structural solution allows to have shorter connection plates 39 and to accumulate the dust in the cavity 35 without the risk that the same dust obstructs the duct 15.
  • the filtering element 22 can also have non-cylindrical shape: for example it can be with square transversal section.
  • the housings 37-38 in such case must have a shape couplable to the ends 36 of the filtering element

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

A dust collection container for a motorized tool with capacity of suction and collection of the working dust is described, comprising a first duct (15) for the inlet of air, a second duct (24) for the outlet of air and a filtering element (22). Said container (13) has an internal framework (30) and said filtering element (22) is arranged in removable way outside said framework (30) and it has an internal cavity (35) for the collection of the dust and a filtering external portion (34) looking at the surrounding environment.

Description

"Dust collection container with rigid internal framework supporting an external filtering element for motorized tool with capacity of suction of the working dust".
* * * * * DESCRIPTION
The present invention concerns a dust collection container with rigid internal framework supporting an external filtering element for a motorized tool with capacity of suction of the working dust.
Motorized tools are known, such as honing machines, sanding machines and so on, in which an operating disc, usually called "plate", is made orbit around the axis of an opportunely controlled driving shaft.
A common problem with this type of tools consists in the elimination of the working dusts, that for the most part get intaken through a duct which leads toward the outside. There are tools known having a suction system directly incorporated in the tool itself, where the working dust gets conveyed into an appropriate bag for the filtering of the air placed outside of the tool. Such bags are removable from the machine for their substitution and/or cleaning.
The patent application GB 2 343 393 describes a tool comprising a system for the extraction of the dust arranged inside its container which conveys the dust into a box for the collection of the dust. The box for the collection of the dust has holes for the outlet of the air in the upper part of the box, transversally to the direction of the flow of air coming from the tool. A filter is placed in the upper part of the box to correspond with the holes. Once saturated the filter gets replaced.
It is also known from EP-A-04101952.2 a tool comprising a system for the suction of dust and a container for the collection of dust. Said container is made up of a preferably cylindrical envelope inside of which a filtering element is placed that is also preferably cylindrical, which can be mounted coaxial or be unframed with reference to the container and has a transversal (to the flow of air) extension slightly lower than said envelope.
The container has a duct for the inlet of air couplable to the tool and at least one duct for the outlet of air, that is closed by a plug whose opening allows to generate in combination with a suction device a cleaning flow of air for the same filtering element.
It is evident that the transversal section of the filtering element will not have to exceed certain dimensions since the filtering element must in any case be included in its envelope. This results in a limitation of the filtering capacity of the container. Object of the present invention is to provide a dust collection container that is efficient, offers an increased filtering capacity, is simple to assemble, light and easy to clean.
According to the invention such object is attained by means of a dust collection container comprising a first duct for the inlet of air, a second duct for the outlet of air and filtering element, characterised in that said container has a rigid internal framework and said filtering element is arranged in removable way outside said framework and has an internal cavity for the collection of dust and an external filtering portion directly looking at the surrounding environment. It is thus possible to obtain a larger filtering surface, a more efficient circulation of the air with a lower total weight of the container.
The user can therefore use the motorized tool more easily and for longer times.
Even the substitution of the filter turns out to be considerably simpler since there are no more hindering external envelopes.
These and other characteristics of the present invention will become evident from the following detailed description of an embodiment thereof that is illustrated as a non limiting example in the enclosed drawings, in which: Figure 1 shows a sectioned side view of a tool provided with a dust collection container according to the present invention;
Figure 2 shows a view in section according to the line II-II in Figure 1;
Figure 3 shows a view in section according to the line III-III in Figure 1;
Figure 4 shows a side section view of the dust container in Figure 1 with closed plug;
Figure 5 shows a side section view of the dust container in Figure 1 with open plug;
The tool shown in Figure 1 in the drawings is for example an orbital honing machine comprising a working head 1. The working head 1 comprises a rigid external case 2, in which a set of driving mechanisms for an operating disc or back-up plate 3 (or as an alternative a plate with rectangular or triangular shape) is lodged.
In turn the driving mechanisms comprise a driving shaft 4 which operates a fan 5 which has the task to intake the working dust and to send it toward a coupling tube 10. The coupling tube 10 puts in communication the inside of the working head 1 with the external environment. The coupling tube 10 preferably ends with a mouthpiece 11 provided with one seal packing 12.
To the mouthpiece 10 it is possible to couple a dust collection container 13, with axis inclined with reference to the working plane, which is made up of a rigid internal framework 30 couplable to a cylindrical external removable filtering element 22.
The internal framework 30 is shaped in such a way as to define a first duct 15 for the inlet of air connected with the mouthpiece 10, with which an internal connection element 31 is rigidly connected that is made up of connection plates 39 and of a terminal flange 32 suitable to couple with a closing element 33 and to form a second duct 24 for the outlet of air closed by a removable plug 17.
The filtering element 22 is made up of a cylindrical lateral filtering portion 34, of a dust collection cavity 35 and ends 36 couplable with - A -
housings 37 and 38 respectively of the internal framework 30 and of the closing element 33.
As for what concerns the operation, when the plug 17 closes the duct 24 the air thrust by the fan 5 enters the container 13 through the duct 15 while carrying with it the working dust and it exits thus cleaning itself through the filtering lateral portion 34 (figure 4).
The dust accumulates in the bottom part of the cavity 35 inside the filtering element 22.
In order to eliminate the accumulated dust it is necessary to remove the plug 17 and to connect external vacuum means to the duct 24. In such situation the air together with the dust exits the cavity 35 through the duct 24.
The suction force induced by said external vacuum means determines the origin of a secondary flow of air. External clean air enters through the external filtering portion 34 and it exits from the duct 24 thus dragging dust particles collected on said external filtering portion 34 which consequently gets partially cleaned.
The internal framework 30 allows to obtain several advantages:
- greater diameter of the filtering element; - better circulation of the air;
- reduced weight of the container 13 and therefore of the tool as a whole. Consequently the filtering element 22 lasts longer.
In order to substitute the filtering element 22 it is sufficient to remove the closing element 33 locked by the flange 32 of the internal connection element 31.
From Figure 1 one can notice that the first duct 15 has a shape lengthened toward the inside of the cavity 35. This structural solution allows to have shorter connection plates 39 and to accumulate the dust in the cavity 35 without the risk that the same dust obstructs the duct 15. The filtering element 22 can also have non-cylindrical shape: for example it can be with square transversal section. The housings 37-38 in such case must have a shape couplable to the ends 36 of the filtering element
22.

Claims

1. Dust collection container for a motorized tool with capacity of suction and collection of the working dust, comprising a first duct (15) for the inlet of air, a second duct (24) for the outlet of air and a filtering element (22), characterised in that said container (13) has an internal framework (30) and said filtering element (22) is arranged in removable way outside of said framework (30) and it has an internal cavity (35) for the collection of dust and a filtering external portion (34) looking at the surrounding environment.
2. Container according to claim 1, characterised in that it comprises a plug (17) positionable between a first closed position and a second open position; when said plug (17) is in said first closed position a flow of air enters from said first duct (15) and exits through the external filtering portion (34) of the filtering element (22); when said plug (17) is in said second open position said flow of air enters from said first duct (15) and exits from said second duct (24) and another flow of air is created and it enters through the external filtering portion of the filtering element (22) and exits from said second duct (24).
3. Container according to claim 1, characterised in that said filtering element (22) is kept in working position by a closing element (33).
4. Container according to claim 3, characterised in that said internal framework (30) comprises said first duct (15) to which an internal element of connection (31) is rigidly connected that is provided with a flange (32) suitable to couple to the closing element (33).
5. Container according to claim 1, characterised in that said filtering element (22) has ends (36) engageable with supporting housings (37-38) belonging to the internal framework (30) of the container and to the closing element (33).
6. Container according to any one of claims 1-5, characterised in that said filtering element (22) has cylindrical shape.
PCT/EP2006/061562 2005-04-21 2006-04-12 Dust collection container with rigid internal framework supporting an external filtering element for motorized tool with capacity of suction of the working dust. WO2006111496A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000713A ITMI20050713A1 (en) 2005-04-21 2005-04-21 CONTAINER FOR POWDER COLLECTION WITH RIGID INTERNAL OBSERVATION SUPPORTING AN EXTERNAL FILTER ELEMENT FOR MOTORIZED TOOL WITH SUCTION CAPACITY OF THE PROCESSING DUST
ITMI2005A000713 2005-04-21

Publications (1)

Publication Number Publication Date
WO2006111496A1 true WO2006111496A1 (en) 2006-10-26

Family

ID=36570001

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/061562 WO2006111496A1 (en) 2005-04-21 2006-04-12 Dust collection container with rigid internal framework supporting an external filtering element for motorized tool with capacity of suction of the working dust.

Country Status (2)

Country Link
IT (1) ITMI20050713A1 (en)
WO (1) WO2006111496A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1285727A1 (en) * 2001-08-10 2003-02-26 Techtronic Industries Co., Ltd. Orbital sander with a high speed permanent DC motor and a freely rotatable sanding plate
GB2393143A (en) * 2002-09-23 2004-03-24 Bosch Gmbh Robert Hand held machine tool with detachable dust box
EP1477273A1 (en) * 2003-05-14 2004-11-17 Guido Valentini Motorized tool with suction and dust collection capacity

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1285727A1 (en) * 2001-08-10 2003-02-26 Techtronic Industries Co., Ltd. Orbital sander with a high speed permanent DC motor and a freely rotatable sanding plate
GB2393143A (en) * 2002-09-23 2004-03-24 Bosch Gmbh Robert Hand held machine tool with detachable dust box
EP1477273A1 (en) * 2003-05-14 2004-11-17 Guido Valentini Motorized tool with suction and dust collection capacity

Also Published As

Publication number Publication date
ITMI20050713A1 (en) 2006-10-22

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