EP1858669B1 - Micro-sander that provides a sanding effect using an abrasive/air disc - Google Patents
Micro-sander that provides a sanding effect using an abrasive/air disc Download PDFInfo
- Publication number
- EP1858669B1 EP1858669B1 EP06726031A EP06726031A EP1858669B1 EP 1858669 B1 EP1858669 B1 EP 1858669B1 EP 06726031 A EP06726031 A EP 06726031A EP 06726031 A EP06726031 A EP 06726031A EP 1858669 B1 EP1858669 B1 EP 1858669B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abrasive
- disc
- nozzle
- ejection
- air
- 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.)
- Not-in-force
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
- B24C5/04—Nozzles 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
- 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
- B24B23/026—Fluid driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
- B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
Definitions
- the present invention relates to a pneumatic sanding micro-sander by air-abrasive disc effect.
- the fields of application of the present invention are: dermatology, the cleaning of fine polychromies and very fragile sculptures and all other fields requiring the finest possible cleaning of micro-pellicular deposits.
- microdermabrasion There is already in dermatology a method of abrasion of the skin called microdermabrasion. It is a method of digging the superficial layer of the skin by mini-sanding. This method consists in projecting compressed air loaded with abrasives in the form of powder with the aid of a compressor. These abrasive powders are in fact microcrystals of corundum or alumina oxide, strongly angular and particle size often less than 50 microns. These abrasives are sprayed at very low pressures of the order of about 1 to 2 bars, through a small nozzle about 1 millimeter in diameter. The effect sought by the action of this mini-sanding is to remove the skin layer of the surface of the skin to stimulate the production of new skin cells, in order to force the epidermis to regenerate.
- Laser emission also produces a number of mechanical shock waves that propagate through the material.
- the cleaning laser ranks in class 4, its emission (LEA) is a billion times stronger than the solar emission. This makes it a tool that requires the compulsory use of specialized engineers and thus makes the use of the laser difficult.
- the present invention seeks to overcome all these disadvantages. For this, it offers in restoration of monuments, dermatology and all other industrial areas of ultrafine sanding, a new tool particularly powerful, which is manageable, simple and convenient to use.
- the tool of the present invention is presented as a pneumatic micro-sander. But it cleans, without abrasive disc.
- the sanding disc of sandpaper, corundum, alumina, or other abrasives on a conventional sander is replaced by a high-pressure compressed air cushion that serves as a disk and is loaded with corundum, alumina oxide, etc.
- the document FR 2685027 discloses a pneumatic cleaning and pickling tool, comprising a disk or turntable (24) for ejecting a mixture of compressed air and abrasive, said disk or turntable is rotated by mini-motor means -turbine which are adapted to achieve very high speeds, these very high speeds being between 4000 and 12000 revolutions per minute, said disk or turntable comprises a plurality of ejection members made of material resistant to the wear of the ejection of said abrasive, for example of the tungsten carbide type, and disposed in a straight or inclined manner within said disk or turntable, said ejection members being provided with one or more ejection ports for ejecting said compressed-abrasive air mixture, said ejection orifices extending straight or inclined, and for at least part of their thickness in said or said ejection organs and which comprises a feed duct constituting an acceleration nozzle of the air-abrasive mixture common to all said ejection orifices, said acceleration nozzle being
- the present invention aims to overcome all these disadvantages and drawbacks of current stripping processes that are on the market. Especially in the field of microdermabrasion and in all other industrial fields of ultrafine sanding.
- the present invention makes it possible to manufacture a manual tool.
- This tool is used as a pneumatic micro-sander.
- the sanding work is done almost by contact, a few millimeters from the surface to be stripped.
- This new tool acts as a pneumatic micro-sander, whose abrasive disk would be replaced by a high-pressure air cushion, in which a projected abrasive rotates.
- the sanding work is no longer done by contact with an abrasive disc, as with a sander, but by contact with a disc of high pressure compressed air loaded with abrasive.
- the invention relates to a pneumatic tool according to claim 1 and the method of its operation according to claim 13.
- the very high speeds of rotation of the plate or disk are obtained using a mini-turbine of the pneumatic motor type.
- the axis of rotation of the disk or plate acts as a nozzle acceleration channel. But, in addition, the functions of acceleration and ejection of this nozzle are dissociated in two parts.
- the nozzle acceleration channel is common to all ejection ports, such as holes or slots. It opens on a jet bent cone charged with bursting the jet of compressed air and abrasives at the exit of the nozzle acceleration channel in order to direct the abrasive air flow towards ejection holes, holes-type or slots.
- These ejection members may be no more than simple holes or slots drilled in washers or platelets tungsten carbide.
- these organs can be well, excessively thin and less than 400 micrometers in diameter, or even less than 100 micrometers, while avoiding any risk of clogging.
- These ejection members which may be in the form of washers or platelets are inserted into a disc or tray. This disk or tray, relieved of the weight and size of nozzles, can be driven in rotation at very high speeds. These rotational speeds obtained using a pneumatic mini-turbine range from 4000 to 12,000 revolutions per minute. What allows for all these characteristics, to be able to work if necessary, at high pressure. That is to say, more than 5 or 7 bars of pressure.
- this manual tool Due to its low weight and bulk characteristics and its surfacing qualities due to sanding effect on abrasive powder-laden air cushion, this manual tool makes it possible to sand particularly delicate substrates such as the skin epidermis, the fine polychromies , very fragile sculptures and all types of more or less fragile supports.
- the tool can also be directly adapted to an industrial robot arm and automatically provide jobs such as aircraft and automotive sanding.
- the tool according to the invention is made to ensure very superficial removal of the first layer of skin, without digging, thus allowing the epidermis to regenerate.
- the present invention proposes to limit the maximum dust emission and increase the quality of stripping, to use exhaust holes as thin as possible. These openings may even be less than 400 micrometers. See even finer, in some cases, this fineness can be up to 10 micrometers.
- the principle of the invention proposes to dissociate in two the acceleration and ejection functions of the nozzle.
- This principle makes it possible to use ejection orifices, of the hole or slot type, extremely fine, which may even be less than 400 micrometers in diameter, up to 100 microns, or less, without clogging in the nozzle channel.
- the nozzle By splitting into two separate functions, the nozzle, all the ejection ports, have their acceleration channel in common.
- the acceleration channel of all the nozzles being common and placed in the center of the tool, it serves in parallel with the axis of rotation of the disk or plate. Placed in the center, it opens on a jet breeze cone. This cone is responsible for bursting the jet of compressed air and abrasives at the outlet of the nozzle acceleration channel, in order to direct the abrasive air flow towards the ejection ports.
- These ejection ports pierced in a tungsten carbide member may be nothing more than simple holes or slots. Which tungsten carbide pieces provided with said ejections orifices, are nested in a disk or plate.
- This disc or tray relieved of the weight and bulk of many nozzles, can be driven at very high speeds of rotation. That is, at speeds between 4,000 and 12,000 rpm.
- the first part of the nozzle which has the function of acceleration is arranged upstream. It is an acceleration channel common to all ejection ports. It is a classic nozzle duct of about 2 to 4 millimeters. It is this principle that removes the nozzles placed in the rotating disc and replace them with washers or thin tungsten carbide inserts pierced by simple holes or slots. This is what allows very high speeds of rotation. It also makes it possible to use the thinnest ejection diameters possible, up to 10 micrometers, without clogging in the nozzle acceleration channel.
- the present invention makes it possible, unlike all other methods, to be able to work at high pressure.
- the present invention also makes it possible to virtually no longer make dust.
- the air consumption and the volume of dust decreases in very large proportions. Indeed, 24 nozzles of 1 millimeter consume at 7 bar more than 2000 liters of air per minute. With tungsten carbide washers or plates pierced with 200 micrometer holes, the air consumption for 24 ejection ports is only 70 liters per minute at 7 bar.
- this principle of very low air consumption allows to double or triple the volume of abrasive projected per liter of air. The present invention therefore allows to project much more abrasive with infinitely less air. And so by the very high speed of rotation of the disc, to gain in efficiency, especially when one increases the pressure and that one works as close as possible to the support to be stripped.
- the entire device goes through a control cabinet.
- a two-way valve in the cabinet makes it possible to circulate compressed air without abrasives steadily.
- the tool is equipped with a button to actuate the output of the abrasive from the tank. This allows from the tool to close the arrival of the abrasive sequentially and work sequentially timed arrival of the powder. This principle also allows for the constant purging of the channels during work.
- a system can be installed in the control cabinet to automatically close in a sequence of a few seconds, this valve outlet of the abrasive. Thus, only compressed air circulates in the device, except for certain fractions of seconds, or abrasive mixes with the air cushion at high pressure.
- the thin rotary disc can be Teflon, about 1 cm screwed into a tapered housing of aluminum, steel or Teflon.
- the diameter of this disc or plate can be 20 millimeters and up to 250 millimeters.
- this disk has an average diameter of 110 to 250 millimeters.
- this disc has an average diameter of 80 to 140 millimeters.
- this disc has an average diameter of 25 to 50 millimeters.
- each ejection member is on average 2 to 3 millimeters. But this thickness can also be greater than 3 millimeters.
- the diameter of each hole drilled in the tungsten carbide ejection member is preferably 500 microns. But this diameter may also be larger up to 1 to 2 millimeters or thinner, up to 10 micrometers. It is also possible to replace the ejection holes, by slots, which will be principle, longer than wide. And to use extremely thin slits of the order of less than one hundred micrometers, the tungsten carbide washers or washers called ejections organs, will no longer be machined, but two halves, will be assembled in a set of tungsten carbide more great.
- the principle of the invention is that the acceleration ducts of each ejection orifice are grouped into a common channel.
- the diameter of this duct common to all the ejection orifices which is also advantageously, the axis of rotation of the disk is preferably between 2 and 4 millimeters. But it can also be like all nozzle channels, between 1 and 8 millimeters.
- the present invention makes it possible to greatly lighten the device, which becomes an easily manageable manual tool, such as a micro-sander.
- the very heavy parts of all the nozzles are replaced by a single nozzle duct common to all the ejection ports.
- the disc may thus be less bulky. Reduced by the thickness of the nozzle acceleration ducts and the weight of the nozzles, this principle makes it possible to drive the disk or turntable at very high speeds, of more than 500 revolutions per minute, without excessive vibrations or blockage of the rotor. device.
- the shaft of the pneumatic motor or axis of rotation which transmits the rotation to the disk or plate can, if it is pierced in the direction of its length have a dual function and act as a common nozzle channel allowing to accelerate the air-abrasive mixture.
- the embodiment of the tool of the invention is thus advantageously from an adapter part of the angle of a pneumatic motor. Part in which, the central axis of the angle gear is pierced in the direction of its length. It thus serves as an acceleration conduit common to all the exhaust ports and axis of rotation of the disc or plate.
- the nozzle which is already equipped with two sealed bearings, by equipping it with 5 thin vanes, can have a dual function: nozzle and rotor. And by adding flanges and a double cylinder, the assembly becomes a motor, which can directly rotate the plate.
- the nozzle of the tool being in the axis and of fine diameter of about 3 millimeters perhaps at the same time the motor shaft.
- the nozzle being in the axis and with a diameter of about 3 millimeters, can also serve as a shaft of the angle of a pneumatic motor.
- the tool can be equipped with an integrated system for dust extraction.
- the projection disk can be equipped at the periphery with plastic or aluminum centrifugal vane paddles directly connected to a small vacuum bag or connected to a second, more distant suction source, such as an industrial centrifugal vacuum cleaner.
- Another solution is to blow compressed air at high speed through an annular gap of very small width located directly on the projection tool, in order to accelerate the speed of the air in the projection casing. aspirate the dust produced.
- the compressed air pushed into this fine annular gap may even advantageously come from the exhaust of the pneumatic motor which ensures the rotation of the disk or plate.
- the invention has the following particularity: the acceleration and ejection functions of this nozzle are split into two parts. Which allows without clogging, in the long duct of acceleration of the nozzle, to simply use at the outlet, ejection organs, such as holes or slots excessively thin, may even be less than 400 micrometers in diameter.
- the rotary nozzle channel or not is common to all the ejection orifices, it opens on a jet-cone charged to burst the air-powder mixture in order to direct it towards these ejection organs, holes or slots.
- These members are arranged more or less in a disk or plate and in that said disk or plate is rotated preferably by motor means of the mini-turbine type, at very high speeds, these speeds are between 4,000 and 12,000 rpm.
- the tool can also be directly adapted to an industrial robot arm and provide work such as sanding aircraft cabins and automobile bodies.
- the present invention relates to a pneumatic tool, which stripping by air cushion effect loaded with abrasive powder.
- This hand tool can sand particularly delicate substrates such as skin epidermis, fine polychromies, very fragile sculptures and all types of more or less fragile supports.
- the jet of the jet of compressed air and abrasive powder is exploded by a jet-cone; the latter is responsible for modifying the exit angle of the jet leaving the acceleration channel of the nozzle to direct it towards the ejection organs, such as holes or slots that are located in the disk or turntable.
- the device of the invention comprises, upstream, a compressor which supplies dry and clean compressed air.
- the working pressure supplied by the compressor is between 1 and 10 bar. For certain types of work, by the characteristics of the present invention, this pressure may even be greater than 10 bars. Can be even 20 or 25 bar for hard or hard media.
- the stripping tool according to the invention and the figure 1 to 3 comprises a housing 17 in which there is mainly a body of revolution 2, said axis of rotation of the disk or plate which acts as an acceleration channel common to all the ejection orifices 10 and 11.
- This body of revolution 1, 2 is mounted on a turbine engine 28 for driving the rotating part 1 and the plate or disc 24; this turbine engine 28 also forms a handle for gripping the tool for an operator.
- the rotary part 1 of the tool comprises at its center a nozzle duct, called a channel acceleration 4 common to all the exhaust ports, type holes 10 and 11 slots - the upstream end is connected to a fixed portion 3 of pressurized air inlet loaded or not with abrasive, and - 1 opposite downstream end opens out at a closed space by a disk or plate 24.
- This disk or plate 24 is equipped with several plates 41 of tungsten carbide with a thickness of 3 millimeters and pierced with several very fine holes 10 of the order of 500 micrometers.
- the downstream end of the acceleration channel 4 opens onto a jet-cone 23; this jet-cooling cone 23 extends coaxially with said channel 4 and is situated in the center of the internal surface of the disk or plate 24.
- the acceleration channel 4 has a section of about 3 millimeters and a length of 7 millimeters.
- the disc or tray 24 has on the figure 1 a diameter of 8 centimeters.
- the disk or plate 24 is pierced with numerous slots. These ejection orifices advantageously have a width of 300 micrometers for a length of 2 millimeters. These slots 11 are distributed along two lines, arranged in a general form of X.
- the above-mentioned high-speed turbine motor 28 is secured to the casing 17 by screwing means 18 ( figure 3 ).
- This turbine engine 28 rotates the body of revolution 1 and the disc or plate 24 by means of a pinion, as for a gearbox motor.
- the housing 17 comprises means 13 for receiving a small abrasive tank, mini tank 5.
- mini tank 5 allows sterilization of the abrasive.
- mini powder tanks are in the form of small bottles.
- the abrasive can be calibrated in size ranges of 10 micrometers.
- the mini-tanks 5 can be used by categories of range with precise granulometry: for example, a powder bottle of between 10 and 20 microns, etc.
- the mini tank 5 is disposed directly on the gun by screwing, allowing its rapid replacement once empty; alternatively, this mini-tank 5 can be deported in the immediate vicinity of the operator or controlled at a greater distance from a control cabinet.
- This mini tank 5 as on the figure 4 contains abrasive powder.
- a small pneumatic jack 15 is also provided to prevent clogging of said plastic tube 21, so as to sequentially manipulate a rod 37 located at the level of the plastic tube 21, to unclog it, if necessary.
- the compressed air arrives through the tip (26) in the motor (28), which then causes the driving of the axis of rotation 1 which rotates the disc or tray 24.
- the opening of a button (19) makes it possible to adjust the opening or closing of the compressed air inlet in the tool, and consequently the projected air flow rate.
- the compressed air arrives directly from the compressor into the gun via the nozzle (3).
- the compressed air thus arrives in the sanding gun by the tip (3) not loaded with abrasives.
- the mini-tank When the mini-tank is on the tool, by opening the button (12) the abrasive contained in the tank (5) down through the channel (20). By intervening on this button (12) the volume of abrasive which arrives is regulated, which makes it possible to modulate to the gram close the dosage dosage of abrasives in the compressed air. This is in particular possible by the fact that the flow of the abrasive is through the small flexible and hollow plastic conduit 21, floating and vibrating at the channel 20.
- the small tube (21) can therefore be tightened by the screw (12) to the finest adjustment possible; this also allows by completely closing the screw (12) to purge at all times the ducts by only circulating in the channel (4) and the ejection ports 10 and 11 that clean dry air from the nozzle (3).
- the pressurized air / abrasive particles mixture is then accelerated along the acceleration channel 4 until it reaches the closed space, where the jet-cone 23 ensures its orientation towards the ejection orifices, which are simple holes. or slots 11. These orifices, when it comes to holes, have a preferred diameter of the order of 500 micrometers.
- the speeds of the disc or plate 24 are between 4000 and 12000 revolutions per minute.
- the compressed air jets are thus rotated at the speed of that of the disk or plate 24;
- the device then applies most often to a few millimeters of the surface to be treated, sometimes almost by contact; at this distance, the sanding is done as if the sander had a compressed air disk in which abrasive powders float.
- the operator wishes to stop his intervention, it is sufficient for him to first close the button (12) of arrival of abrasive particles, then the button (19), pressurized air inlet and finally release the joystick (9), corresponding to the arrival of air in the engine.
- the figure 5 shows the sanding tool suitable especially for the treatment of soiling on polychromies.
- This tool is similar to the one described above in relation to the Figures 1 to 3 , and is distinguished only mainly by the diameter of its disk or plate 24.
- This disk or plate 24, shown in particular on the figure 6 has a diameter of 30 millimeters.
- This disk or plate 24, made of Teflon type material comprises two cylindrical through-slots within each of which is introduced a washer 27, provided with a plurality of slots 11, here four in number.
- These washers 27 are made of tungsten carbide, to withstand the forces caused by the abrasion of the particles at the time of their exit through the orifices 11.
- These washers have a diameter of 12 millimeters for a thickness of 2 millimeters.
- the figure 7 shows an alternative embodiment of tungsten carbide washers 27, which are here equipped with a plurality of aligned cylindrical through holes 10. These ejection holes 10 have a diameter most often between 10 and 500 micrometers.
- the washers 27 described above in connection with the Figures 5 to 7 can be reported within trays of different diameters more or less large. This diameter varies from 4 millimeters to 250 millimeters. The number of washers, and the number of their orifices, are then adapted in greater or lesser number depending on the desired effect.
- the tool represented on the figure 8 is suitable for dermatological microdermabrasion treatments.
- the corresponding tool differs from that described in relation to the Figures 1 to 3 only, by the diameter of the nozzle acceleration channel (4), which is of a diameter of 1 millimeter.
- the very small diameter of this channel which is also the axis of rotation of the disk or plate, allows the manufacture of a very small tool.
- the ejections orifices located on the disk are eight in number and have a diameter of 300 micrometers.
- the figure 9 shows an alternative embodiment relating to the mobile part 1 of the body of revolution, which reformed here a pneumatic motor.
- the acceleration channel 4 of the movable part 1 serves as a rotor 38, and is equipped with five thin vanes 31.
- Front 36 and rear 35 plates are provided at each end of the rotor 38.
- This motor 38 is still equipped with a double wall cylinder 34 pierced with several openings 30 allowing the passage of dry and clean compressed air.
- the assembly serves to rotate the disk or plate 24, while conveying at its center 4, the air-powder mixture.
- the figure 10 shows a principle of aspiration to suck the light dust produced. It is observed the presence of an annular gap 32, of small width, through which is blown air at high speed so by venturi effect, to suck the dust. This air flow advantageously comes from the exhaust of the pneumatic motor 28.
- This plate comprises means 40 for inserting tungsten carbide plates 41.
- the disc or plate 24 is made of Teflon, comprises six housings 40, formed on the side of its inner surface.
- the dwellings 40 in question are of a generally elongated shape. They each extend radially between the central jet-taper 23 and the peripheral edge of the disc or plate 24; these housings are regularly distributed around the jet cone 23.
- These housings 40 in question are each shaped to receive and maintain one or more tungsten carbide inserts 41 in the form of tongue, plate or plate.
- the housings 40 have a constant section over their entire length. They are machined T-shaped to receive and block the tabs, plates or dishes.
- the tabs, plates or plates 41 are made of tungsten carbide type material, and have a corresponding size identical to that of their housings 40 to be inserted into force. These tabs, or plates 41, which are called platelets 41 have a thickness of 3 millimeters, a length of 12 millimeters and a width of 10 millimeters. They are provided with orifices 10, in the form of through holes. Once in place within its housing 40, the outer face plate 41 is suitably positioned to correspond to the holes 10 "drilled in the disk or Teflon plate 24. The function of this principle of drilling the disc or plate 24 only serves to render the tungsten carbide inserts not visible on the outside of the disc. In practice, the plate 24 in question is mounted aiming on the rotating part 43. The set of disk or plate 24 thus configured, can equip all the tools of the invention.
- the pressurized air-powder mixture is projected onto the jet cone 23, which distributes it over the internal surface of the plate 24.
- the air-powder mixture thus arrives on the plates 41, and passes through the ejection orifices in tungsten carbide 10 of the tray 24 to produce the sanding abrasive force.
- Said plate 24 is parallel rotated at very high speed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
La présente invention concerne une micro-ponceuse pneumatique de ponçage par effet de disque air-abrasif. Les domaines d'application de la présente invention sont : la dermatologie, le nettoyage des fines polychromies et des sculptures très fragiles et tous autres domaines nécessitant le nettoyage le plus fin possible de dépôts micro-pelliculaires.The present invention relates to a pneumatic sanding micro-sander by air-abrasive disc effect. The fields of application of the present invention are: dermatology, the cleaning of fine polychromies and very fragile sculptures and all other fields requiring the finest possible cleaning of micro-pellicular deposits.
In y a déjà en dermatologie une méthode d'abrasion de la peau appelée microdermabrasion. C'est une méthode de creusement de la couche superficielle de la peau par un mini-sablage. Cette méthode consiste à projeter à l'aide d'un compresseur de l'air comprimé chargé d'abrasifs sous forme de poudre. Ces poudres abrasives sont en fait des microcristaux de corindon ou d'oxyde d'alumine, fortement angulaires et de granulométrie souvent inférieure à 50 microns. Ces abrasifs sont projetés à des pressions très basses de l'ordre d'environ 1 à 2 bars, au travers d'une petite buse d'environ 1 millimètre de diamètre. L'effet recherché par l'action de ce mini-sablage est d'éliminer la couche pelliculaire de surface de la peau afin de stimuler la production de nouvelles cellules cutanées, afin d'obliger l'épiderme à se régénérer.There is already in dermatology a method of abrasion of the skin called microdermabrasion. It is a method of digging the superficial layer of the skin by mini-sanding. This method consists in projecting compressed air loaded with abrasives in the form of powder with the aid of a compressor. These abrasive powders are in fact microcrystals of corundum or alumina oxide, strongly angular and particle size often less than 50 microns. These abrasives are sprayed at very low pressures of the order of about 1 to 2 bars, through a small nozzle about 1 millimeter in diameter. The effect sought by the action of this mini-sanding is to remove the skin layer of the surface of the skin to stimulate the production of new skin cells, in order to force the epidermis to regenerate.
Mais les résultats actuels sont très mitigés. Car cette méthode de mini-sablage qui s'apparente aux techniques de décapage des bâtiments encrassés n'a pas pour principe un frottement suffisamment fin et régulier de la peau, puisque le jet tend plutôt à creuser la peau. Ce qui dans le cas du traitement des rides aboutit à une abrasion trop prononcée. Ce qui est le contraire de l'effet recherché.But the current results are very mixed. Because this method of mini-sanding that is similar to the stripping techniques of fouled buildings does not have a principle a sufficiently fine and regular friction of the skin, since the jet tends to dig the skin. Which in the case of the treatment of wrinkles results in an abrasion too pronounced. Which is the opposite of the desired effect.
Dans le domaine de la restauration, est apparu, il y a environ une dizaine d'années, un outil employant le laser, pour décaper les suies et sallisures recouvrant les sculptures fragiles des bâtiments anciens en pierre de taille. Son principe est de vouloir éviter tout creusement ou dégradation du support original lors de l'opération de nettoyage des dépôts de micro-suies et de sallissures. Mais, la controverse sur cet outil provient du fait ; qu'il ne parvient à enlever ces dépôts fortement collés, que par une élévation de température de plusieurs milliers de degrés. Le laser nettoie par un échauffement localisé extrêmement important, afin de transformer en gaz chaque particule de salissures. L'effet de jaunissement caractéristique du nettoyage laser proviendrait d'un roussissement du support surchauffé durant un temps extrêmement bref, puisque l'émission laser est réglée sur la couleur sombre du support. L'émission laser produit également un certain nombre d'ondes de choc mécanique qui se propagent dans le matériau. Le laser de nettoyage se range dans la classe 4, son émission (LEA) est un milliard de fois plus fort que l'émission solaire. Ce qui en fait un outil qui nécessite le recours obligatoire à des ingénieurs spécialisés et rend ainsi délicat l'utilisation du laser.In the field of restoration, there appeared, about ten years ago, a tool using the laser, to pick up the soot and sallisures covering the fragile sculptures of old stone buildings. Its principle is to avoid any digging or degradation of the original support during the cleaning operation of micro-soot deposits and stains. But, the controversy about this tool comes from the fact; that he can not remove these deposits strongly bonded, only by a temperature rise of several thousand degrees. The laser cleans by localized heating extremely important, in order to turn into gas each particle of soiling. The characteristic yellowing effect of the laser cleaning would result from a scorching of the superheated support for an extremely short time, since the laser emission is set to the dark color of the support. Laser emission also produces a number of mechanical shock waves that propagate through the material. The cleaning laser ranks in
C'est pour cela que la présente invention veut palier à tous ces inconvénients. Pour cela, elle propose en restauration de monuments, en dermatologie et dans tous autres domaines industriels relevant du ponçage ultrafin, un nouvel outil particulièrement performant, qui est maniable, simple et pratique d'utilisation.This is why the present invention seeks to overcome all these disadvantages. For this, it offers in restoration of monuments, dermatology and all other industrial areas of ultrafine sanding, a new tool particularly powerful, which is manageable, simple and convenient to use.
L'outil de la présente invention se présente comme une micro-ponceuse pneumatique. Mais elle nettoie, sans disque abrasif. Le disque de ponçage de papier de verre, de corindon, d'oxyde d'alumine, ou d'autres abrasifs qui équipe une ponceuse classique est remplacé un coussin-d'air comprimé à haute pression qui fait office de disque et qui est chargé de corindon, d'oxyde d'alumine, etc.The tool of the present invention is presented as a pneumatic micro-sander. But it cleans, without abrasive disc. The sanding disc of sandpaper, corundum, alumina, or other abrasives on a conventional sander is replaced by a high-pressure compressed air cushion that serves as a disk and is loaded with corundum, alumina oxide, etc.
Le demandeur rappelle ses travaux de recherche qui font déjà l'objet de brevets à partir des techniques de sablage et de micro-sablage :
- Le sablage consiste a projeter, sous air comprimé, à l'aide d'une buse, du sable sur un support à décaper. Le sablage est une méthode particulièrement corrosive. Pour cela il est connu de remplacer le sable de granulométrie importante, voisine, à 2 millimètres, par de l'abrasif sous forme de poudre de granulométrie voisine de 80 à 100 micromètres. Poudre plus dure et plus fine. Mais de par la très grande fragilité de certains supports et de par les nécessités de rendement des entreprises, malgré la finesse de la poudre, de nombreux problèmes d'abrasion persistent.
- Sandblasting consists in projecting, under compressed air, using a nozzle, sand on a support to be stripped. Sandblasting is a particularly corrosive method. For this it is known to replace the sand of large particle size, close to 2 millimeters, with abrasive in the form of powder with a particle size of 80 to 100 micrometers. Harder and finer powder. But because of the great fragility of some media and the need for business performance, despite the fineness of the powder, many abrasion problems persist.
C'est pour cela que le demandeur dans ses brevets précédents, notamment les brevets
- 1 A rendre les buses de projection rotatives.
- 2 A utiliser des buses dont les canaux d'accélération sont fins et dont le diamètre est de façon préférentielle situé autour de 1 à 4 millimètres.
- 3 A utiliser non pas une ou deux buses, mais une multitude de conduits d'accélération de buses (au moins dix).
- 1 Make the spray nozzles spinning.
- 2 To use nozzles whose acceleration channels are fine and whose diameter is preferentially located around 1 to 4 millimeters.
- 3 Use not one or two nozzles, but a multitude of nozzle acceleration ducts (at least ten).
Le document
ledit disque ou plateau rotatif comporte plusieurs organes d'éjection realisés en matériau résistant à l'usure de l'éjection dudit abrasif, par exemple de type carbure de tungstène, et disposés de façon droite ou inclinée au sein dudit disque ou plateau rotatif, lesdits organes d'éjection étant munis d'un ou de plusieurs orifices d'éjection chargés d'éjecter ledit mélange air comprimé - abrasif, lesdits orifices d'éjection s'étendant droits ou inclinés, et pour au moins une partie de leur épaisseur dans ledit ou lesdits organes d'éjection et qui
comporte un conduit d'alimentation constituant une buse d'accélération du mélange air - abrasif commune à tous lesdits orifices d'éjection, ladite buse d'accélération étant rotative ou non rotative,
cela pour pouvoir travailler au plus près de la surface à traiter, et pour obtenir, par exemple au moyen d'une poudre abrasive fine dont la granulométrie est comprise entre 1 et 200 µm, calibrée par plage de 10 micromètres, un ponçage par effet de disque/coussin air - abrasif.The document
said disk or turntable comprises a plurality of ejection members made of material resistant to the wear of the ejection of said abrasive, for example of the tungsten carbide type, and disposed in a straight or inclined manner within said disk or turntable, said ejection members being provided with one or more ejection ports for ejecting said compressed-abrasive air mixture, said ejection orifices extending straight or inclined, and for at least part of their thickness in said or said ejection organs and which
comprises a feed duct constituting an acceleration nozzle of the air-abrasive mixture common to all said ejection orifices, said acceleration nozzle being rotatable or non-rotatable,
in order to be able to work as close as possible to the surface to be treated, and to obtain, for example by means of a fine abrasive powder whose particle size is between 1 and 200 μm, calibrated by a range of 10 microns, a sanding by disc / air cushion - abrasive.
Même si on obtenait généralement un très bon résultat, dans de nombreux domaines d'application, les nombreux essais réalisés par le demandeur ont montré que sa technique était encore perfectible notamment au niveau de la poussière trop abondante, et de la finesse dans l'abrasion.Although we generally obtained a very good result, in many fields of application, the numerous tests carried out by the applicant have shown that his technique was still perfectible especially in terms of dust too abundant, and finesse in abrasion .
Les brevets précédents du demandeur oblige pour augmenter le rendement à augmenter le nombre de buses et par conséquent le volume d'air et d'abrasifs. Ce qui provoque une poussière importante et oblige à s'orienter vers des matériels d'aspiration très lourds et peu maniable. En effet, à partir d'un certain volume d'air projeté, le problème des poussières devient complexe et nécessite l'utilisation de moyens d'aspiration lourds et encombrants. Ce qui ne permet ni maniabilité, ni un travail de haute précision dans la finesse de décapage.The previous patents of the applicant obliges to increase the efficiency to increase the number of nozzles and consequently the volume of air and abrasives. This causes significant dust and forces to move towards very heavy suction equipment and unwieldy. Indeed, from a certain volume of air projected, the problem of dust becomes complex and requires the use of heavy and bulky suction means. This allows neither maneuverability nor a high precision work in the fineness of stripping.
La finesse la plus extrême est indispensable pour décaper par frottement superficiel la peau de façon efficace mais sans attaque trop profonde de celle-ci et pour raviver les couleurs des patines des polychromies totalement ternies. Or, pour obtenir ces résultats la solution évidente serait de diminuer la pression de projection. De même que pour diminuer la poussière, la solution évidente consiste à diminuer le volume d'abrasif projeté. Mais, ces moyens n'ont pas donné satisfaction. La technologie revendiquée dans les brevets précédents du demandeur ne permet pas d'obtenir les nouveaux résultats recherchés.The most extreme finesse is essential to strip the skin superficially in an effective way but without too deep attack of it and to revive the patina colors of completely tarnished polychromes. Now, to obtain these results, the obvious solution would be to reduce the projection pressure. As for reducing dust, the obvious solution is to reduce the volume of abrasive spray. But these means have not been satisfactory. The technology claimed in the applicant's previous patents does not provide the new results sought.
De plus, avec les brevets précédents du demandeur il devenait difficile d'utiliser des conduits d'accélération de diamètre inférieur à 1 millimètre. De même, il devenait difficile d'entraîner un dispositif d'une multitude de buses à plus de 500 tours par minute. Egalement, le poids d'un matériel doté de nombreuses buses, oblige à recourir à un bras articulé porte-charge pour travailler, surtout lorsque l'on alourdit ce dispositif, par un matériel d'aspiration des poussières.Moreover, with the applicant's previous patents it became difficult to use acceleration conduits of diameter less than 1 millimeter. Likewise, it became difficult to drive a device from a multitude of nozzles to more than 500 rpm. Also, the weight of a material with many nozzles, requires the use of an articulated load-bearing arm to work, especially when it is weighed down by a device for dust suction.
La présente invention a pour objectif de palier à tous ces inconvénients et aux inconvénients des procédés actuels de décapage qui sont sur le marché. Notamment dans le domaine de la microdermabrasion et dans tous autres domaines industriels relevant du ponçage ultrafin.The present invention aims to overcome all these disadvantages and drawbacks of current stripping processes that are on the market. Especially in the field of microdermabrasion and in all other industrial fields of ultrafine sanding.
La présente invention permet de fabriquer un outil manuel. Cet outil se manie comme une micro-ponceuse pneumatique. Le travail de ponçage se fait presque par contact, à quelques millimètres de la surface à décaper. Ce nouvel outil agit comme une micro-ponceuse pneumatique, dont le disque abrasif serait remplacé par un coussin d'air à haute pression, dans lequel tournoie un abrasif projeté. Le travail de ponçage ne se fait plus par le contact d'un disque d'abrasif, comme avec une ponceuse, mais par le contact d'un disque d'air comprimé à haute pression chargé d'abrasif.The present invention makes it possible to manufacture a manual tool. This tool is used as a pneumatic micro-sander. The sanding work is done almost by contact, a few millimeters from the surface to be stripped. This new tool acts as a pneumatic micro-sander, whose abrasive disk would be replaced by a high-pressure air cushion, in which a projected abrasive rotates. The sanding work is no longer done by contact with an abrasive disc, as with a sander, but by contact with a disc of high pressure compressed air loaded with abrasive.
L'invention concerne un outil pneumatique selon la revendication 1 et le procédé de son fonctionnement selon la revendication 13.The invention relates to a pneumatic tool according to
Les très hautes vitesses de rotation du plateau ou disque sont obtenues à l'aide d'une mini-turbine de type moteur pneumatique.The very high speeds of rotation of the plate or disk are obtained using a mini-turbine of the pneumatic motor type.
L'axe de rotation du disque ou plateau fait office de canal d'accélération de buse. Mais, en plus, les fonctions accélération et éjection de cette buse sont dissociée en deux parties. Le canal d'accélération de buse est commun à tous les orifices d'éjection, de type trous ou fentes. Il débouche sur un cône brise jet chargé d'éclater le jet d'air comprimé et d'abrasifs à la sortie du canal d'accélération de la buse afin d'orienter le flux air abrasif vers des orifices d'éjections, de type trous ou fentes. Ces organes d'éjections peuvent n'être plus que de simples trous ou fentes percés dans des rondelles ou des plaquettes en carbure de tungstène. N'assurant plus principalement que la fonction d'éjection, ces organes, peuvent, être ainsi, excessivement fins et inférieurs à 400 micromètres de diamètre, voir même, inférieurs à 100 micromètres, tout en évitant tout risque de colmatage. Ces organes d'éjection qui peuvent se présenter sous forme de rondelles ou de plaquettes sont insérées dans un disque ou plateau. Ce disque ou plateau, délesté du poids et de l'encombrement de buses, peut ainsi être entraîné en rotation à de très hautes vitesses. Ces vitesses rotatives obtenues à l'aide d'une mini-turbine pneumatique sont allant de 4000 à 12.000 tours par minute. Ce qui autorise de par toutes ces caractéristiques, de pouvoir travailler si besoin, à haute pression. C'est-à-dire à plus de 5 ou 7 bars de pression.The axis of rotation of the disk or plate acts as a nozzle acceleration channel. But, in addition, the functions of acceleration and ejection of this nozzle are dissociated in two parts. The nozzle acceleration channel is common to all ejection ports, such as holes or slots. It opens on a jet bent cone charged with bursting the jet of compressed air and abrasives at the exit of the nozzle acceleration channel in order to direct the abrasive air flow towards ejection holes, holes-type or slots. These ejection members may be no more than simple holes or slots drilled in washers or platelets tungsten carbide. No longer providing primarily the function of ejection, these organs, can be well, excessively thin and less than 400 micrometers in diameter, or even less than 100 micrometers, while avoiding any risk of clogging. These ejection members which may be in the form of washers or platelets are inserted into a disc or tray. This disk or tray, relieved of the weight and size of nozzles, can be driven in rotation at very high speeds. These rotational speeds obtained using a pneumatic mini-turbine range from 4000 to 12,000 revolutions per minute. What allows for all these characteristics, to be able to work if necessary, at high pressure. That is to say, more than 5 or 7 bars of pressure.
De par ses particularités de faible poids et encombrement et de par ses qualités de surfaçage par effet de ponçage sur coussin d'air chargé de poudre abrasive, cet outil manuel permet de poncer des supports particulièrement délicats comme l'épiderme de peau, les fines polychromies, les sculptures très fragiles et tous types de supports plus ou moins fragiles. L'outil peut également être directement adapté sur un bras de robot industriel et assurer de façon automatique des travaux comme le ponçage avion et automobile.Due to its low weight and bulk characteristics and its surfacing qualities due to sanding effect on abrasive powder-laden air cushion, this manual tool makes it possible to sand particularly delicate substrates such as the skin epidermis, the fine polychromies , very fragile sculptures and all types of more or less fragile supports. The tool can also be directly adapted to an industrial robot arm and automatically provide jobs such as aircraft and automotive sanding.
Ce nouvel outil permet surtout un travail susceptible de répondre le plus possible aux exigences de la Chartre de Venise (1964) qui stipule expressement que les interventions de restaurations doivent tenir compte des principes déontologiques qui sont: intervention minimale en respectant le maximum les matériaux originaux ; stabilité et réversibilité des produits de restauration ; rendu de la lisibilité de l'oeuvre.This new tool allows above all work likely to meet as much as possible the requirements of the Venice Charter (1964) which expressly states that restorative interventions must take into account the ethical principles that are: minimal intervention respecting the maximum original materials; stability and reversibility of restoration products; rendering of the legibility of the work.
Dans le même ordre d'idée, on peut comprendre que l'outil selon l'invention est fait pour assurer un décapage très superficiel de la première couche de peau, sans creusement , permettant ainsi, à l'épiderme de se régénérer.In the same vein, it can be understood that the tool according to the invention is made to ensure very superficial removal of the first layer of skin, without digging, thus allowing the epidermis to regenerate.
La mise au point du procédé de la présente invention est partie des observations suivantes :
- Les brevets précédents du demandeur comportent des limites. Il n'est pas possible tout en projetant un abrasif, de pouvoir entraîner en rotation à plus de 500 tours par minute, une multitude de buses. Il n'est pas possible non plus d'utiliser des diamètres de buses inférieurs à 800 micromètres, sans obstruer rapidement les buses. Des problèmes de poids d'ensemble et de poussières se posent également.
- The applicant's previous patents have limitations. It is not possible while projecting an abrasive, to be able to drive in rotation to more than 500 revolutions per minute, a multitude of nozzles. It is also not possible to use nozzle diameters less than 800 micrometers without quickly clogging the nozzles. Overall weight and dust problems also arise.
Or, pour obtenir des résultats plus qualitatifs et diminuer fortement le volume de poussière, le demandeur a orienté ses travaux de recherche sur le fait d'utiliser des sections de buses de plus en plus fines, pouvant même être inférieures à 400 micromètres.However, to obtain more qualitative results and greatly reduce the volume of dust, the applicant has directed his research work on the use of increasingly thin nozzle sections, which can even be less than 400 micrometers.
La présente invention propose pour limiter au maximum l'émission de poussière et augmenter la qualité de décapage, d'utiliser des orifices d'échappements les plus fin possible. Ces orifices pouvant même être inférieurs à 400 micromètres. Voir encore plus fin, dans certains cas, cette finesse peut aller jusqu'à 10 micromètres.The present invention proposes to limit the maximum dust emission and increase the quality of stripping, to use exhaust holes as thin as possible. These openings may even be less than 400 micrometers. See even finer, in some cases, this fineness can be up to 10 micrometers.
Parallèlement, pour compenser cette très grande finesse des sections de buse, les recherches du demandeur l'ont encouragé à vouloir entraîner le plateau qui portait les buses à des vitesses supérieures à 500 tours par minute, afin de tourner à de très hautes vitesses, plus de 1000 tours par minute et même à des vitesses de l'ordre de 2000, 5000, 10.000, 20.000, voir plus de 30.000 tours par minute. Mais pour atteindre des vitesses aussi rapides, l'ensemble du dispositif, des brevets précédents du demandeur, ne le permettait pas.At the same time, to compensate for this very fine section of the nozzle, the applicant's research encouraged him to want to drive the plate that carried the nozzles at speeds above 500 rpm, in order to turn at very high speeds, more of 1000 rpm and even at speeds of the order of 2000, 5000, 10,000, 20,000, see more than 30,000 revolutions per minute. But to reach such fast speeds, the entire device, the previous patents of the applicant, did not allow it.
Ainsi, pour éviter le colmatage avec des buses aussi fines et tourner à de très hautes vitesses, le principe de l'invention propose de dissocier en deux les fonctions accélération et éjection de la buse. Ce principe permet d'utiliser des orifices d'éjection, de type trous ou fentes, extrêmement fins, pouvant même être inférieurs à 400 micromètres de diamètre, pouvant atteindre 100 micromètres, voir moins, sans colmatage dans le canal de buse.Thus, to avoid clogging with such fine nozzles and rotate at very high speeds, the principle of the invention proposes to dissociate in two the acceleration and ejection functions of the nozzle. This principle makes it possible to use ejection orifices, of the hole or slot type, extremely fine, which may even be less than 400 micrometers in diameter, up to 100 microns, or less, without clogging in the nozzle channel.
En dissociant en deux fonctions séparées, la buse, tous les orifices d'éjection, ont leur canal d'accélération en commun. Le canal d'accélération de toutes les buses étant commun et placé au centre de l'outil, il sert parallèlement, d'axe de rotation du disque ou plateau. Placé au centre, il débouche sur un cône brise jet. Ce cône est chargé d'éclater le jet d'air comprimé et d'abrasifs à la sortie du canal d'accélération de la buse, afin d'orienter le flux air abrasif vers les orifices d'éjections. Ces orifices d'éjections percés dans un organe en carbure de tungstène peuvent n'être plus que de simples trous ou fentes. Lesquelles pièces en carbure de tungstène munies desdits orifices d'éjections, sont emboîtées dans un disque ou plateau.By splitting into two separate functions, the nozzle, all the ejection ports, have their acceleration channel in common. The acceleration channel of all the nozzles being common and placed in the center of the tool, it serves in parallel with the axis of rotation of the disk or plate. Placed in the center, it opens on a jet breeze cone. This cone is responsible for bursting the jet of compressed air and abrasives at the outlet of the nozzle acceleration channel, in order to direct the abrasive air flow towards the ejection ports. These ejection ports pierced in a tungsten carbide member may be nothing more than simple holes or slots. Which tungsten carbide pieces provided with said ejections orifices, are nested in a disk or plate.
Ce disque ou plateau, délesté du poids et de l'encombrement de nombreuses buses, peut ainsi être entraîné à de très hautes vitesses de rotation. C'est-à-dire à des vitesses entre 4.000 et 12.000 tours par minute.This disc or tray, relieved of the weight and bulk of many nozzles, can be driven at very high speeds of rotation. That is, at speeds between 4,000 and 12,000 rpm.
La première partie de la buse qui a la fonction d'accélération est disposée en amont. C'est un canal d'accélération commun à tous les orifices d'éjections. C'est un conduit classique de buse d'environ 2 à 4 millimètres. C'est ce principe qui permet de supprimer les buses placées dans le disque rotatif et de les remplacer par des rondelles ou des plaquettes en carbure de tungstène de faible épaisseur percées de simples trous ou fentes. C'est cela qui autorise des vitesses de rotation très élevées. Il permet aussi d'utiliser des diamètres d'éjection les plus fins possibles, jusqu'à 10 micromètres, sans colmatage dans le canal d'accélération de la buse.The first part of the nozzle which has the function of acceleration is arranged upstream. It is an acceleration channel common to all ejection ports. It is a classic nozzle duct of about 2 to 4 millimeters. It is this principle that removes the nozzles placed in the rotating disc and replace them with washers or thin tungsten carbide inserts pierced by simple holes or slots. This is what allows very high speeds of rotation. It also makes it possible to use the thinnest ejection diameters possible, up to 10 micrometers, without clogging in the nozzle acceleration channel.
Conséquence, la présente invention permet, contrairement à tous les autres procédés, de pouvoir travailler à haute pression.Consequently, the present invention makes it possible, unlike all other methods, to be able to work at high pressure.
Du fait du très faible volume d'air projeté la présente invention permet aussi de ne plus pratiquement faire de poussière. Avec ce principe, la consommation d'air et le volume de poussières diminue dans des proportions très importantes. En effet, 24 buses de 1 millimètre consomment à 7 bars plus de 2000 litres d'air par minute. Avec des rondelles ou plaquettes en carbure de tungstène percées de trous de 200 micromètres, la consommation d'air pour 24 orifices d'éjection n'est plus que de 70 litres par minute à 7 bars. A l'inverse, ce principe de très faible consommation d'air, permet de doubler ou de tripler, le volume d'abrasif projetée par litre d'air. La présente invention permet donc de projeter beaucoup plus d'abrasif avec infiniment moins d'air. Et donc par la très grande vitesse de rotation du disque, de gagner en efficacité, surtout lorsque l'on augmente la pression et que l'on travaille au plus près du support à décaper.Because of the very small volume of projected air, the present invention also makes it possible to virtually no longer make dust. With this principle, the air consumption and the volume of dust decreases in very large proportions. Indeed, 24 nozzles of 1 millimeter consume at 7 bar more than 2000 liters of air per minute. With tungsten carbide washers or plates pierced with 200 micrometer holes, the air consumption for 24 ejection ports is only 70 liters per minute at 7 bar. Conversely, this principle of very low air consumption, allows to double or triple the volume of abrasive projected per liter of air. The present invention therefore allows to project much more abrasive with infinitely less air. And so by the very high speed of rotation of the disc, to gain in efficiency, especially when one increases the pressure and that one works as close as possible to the support to be stripped.
Avec des vitesses de rotation importantes et des orifices d'éjections très fins, de 500 micromètres, voir moins, de nouvelles caractéristiques apparaissent. En travaillant à quelques millimètres de la zone à traiter, il se forme un coussin d'air qui agit comme un disque dans lequel flotte l'abrasif projeté. La pression peut être fortement augmentée, car ce n'est plus le jet de buse qui décape, mais le coussin d'air abrasif. Ce principe qui concentre force, finesse et souplesse permet un décapage parfait, sur la peau, sur de fines polychromies, ou sur tout autre support.With high rotational speeds and very fine ejection holes of 500 microns or less, new features appear. By working a few millimeters from the area to be treated, an air cushion is formed which acts like a disc in which the projected abrasive floats. The pressure can be greatly increased, because it is no longer the jet nozzle that scours, but the abrasive air cushion. This principle which concentrates strength, fineness and flexibility allows a perfect stripping, on the skin, on fine polychromies, or on any other support.
Pour alimenter en abrasif l'outil, différents procédés seront utilisés :
- Le mode d'aspiration par venturi sera souvent préconisé, pour sa capacité à diluer au mieux le mélange air poudre. Le principe supplémentaire étant aussi d'utiliser des poudres de granulométrie fortement bien calibrée par plages de 10 micromètres par exemple.
- Dans un autre cas, l'abrasif sera placé dans une mini cuve sous pression adaptée directement sur l'outil ou à proximité très immédiate de l'opérateur. Cette mini cuve sera équipée de moyen de réglage permettant l'ouverture et la fermeture de l'écoulement de l'abrasif. Elle sera équipée dans la partie écoulement d'un petit tube flexible souple facile à resserrer, pour permettre un dosage très fin et très précis au gramme près de la poudre. Ce petit tube flexible qui est très souple sous l'effet de l'air comprimé fera aussi office de vibreur, pour faciliter l'écoulement de l'abrasif. Cette mini cuve pouvant être équipée d'un petit vérin pneumatique ou d'une buse de soufflage pour purger de façon séquentielle la zone d'écoulement.
- The suction mode by venturi will often be recommended, for its ability to best dilute the powder air mixture. The additional principle is also to use powders particle size highly calibrated in ranges of 10 micrometers for example.
- In another case, the abrasive will be placed in a mini pressure vessel fitted directly to the tool or very close to the operator. This mini tank will be equipped with adjustment means allowing the opening and closing of the flow of the abrasive. It will be equipped in the flow part of a small flexible flexible tube easy to tighten, to allow a very fine and very precise dosage to the gram near the powder. This small flexible tube which is very flexible under the effect of compressed air will also act as a vibrator, to facilitate the flow of the abrasive. This mini tank can be equipped with a small pneumatic cylinder or a blowing nozzle to purge sequentially the flow area.
Pour les travaux les plus fins, l'ensemble du dispositif passe par une armoire de pilotage. Une vanne à deux voies dans l'armoire permet de faire circuler l'air comprimé sans abrasif de façon constante. L'outil est équipé d'un bouton pour actionner la sortie de l'abrasif de la cuve. Ce qui permet à partir de l'outil de fermer l'arrivée de l'abrasif de façon séquentielle et de travailler par séquence temporisées de l'arrivée de la poudre. Ce principe permet en outre, la purge constante des canaux durant le travail. Un système peut-être installé dans l'armoire de pilotage afin de fermer automatiquement par séquence de quelques secondes, ce clapet de sortie de l'abrasif. Ainsi, seul de l'air comprimé circule dans le dispositif, hormis durant certaines fractions de secondes, ou de l'abrasif se mélange au coussin d'air à haute pression.For the finest jobs, the entire device goes through a control cabinet. A two-way valve in the cabinet makes it possible to circulate compressed air without abrasives steadily. The tool is equipped with a button to actuate the output of the abrasive from the tank. This allows from the tool to close the arrival of the abrasive sequentially and work sequentially timed arrival of the powder. This principle also allows for the constant purging of the channels during work. A system can be installed in the control cabinet to automatically close in a sequence of a few seconds, this valve outlet of the abrasive. Thus, only compressed air circulates in the device, except for certain fractions of seconds, or abrasive mixes with the air cushion at high pressure.
Le disque rotatif de faible épaisseur peut être en téflon, d'environ 1 centimètre vissé dans un carter conique en aluminium, en acier ou en téflon. Le diamètre de ce disque ou plateau peut être de 20 millimètres et aller jusqu'à 250 millimètres. Pour les travaux de bâtiments (Tags, graffitis, sculptures), ce disque à un diamètre moyen de 110 à 250 millimètres. Pour les travaux dans l'industrie, ce disque à un diamètre moyen de 80 à 140 millimètres. Pour la microdermabrasion ce disque à un diamètre moyen de 25 à 50 millimètres.The thin rotary disc can be Teflon, about 1 cm screwed into a tapered housing of aluminum, steel or Teflon. The diameter of this disc or plate can be 20 millimeters and up to 250 millimeters. For building work (Tags, graffiti, sculptures), this disk has an average diameter of 110 to 250 millimeters. For work in the industry, this disc has an average diameter of 80 to 140 millimeters. For microdermabrasion this disc has an average diameter of 25 to 50 millimeters.
Dans ces disques, sont usiné plusieurs alésages permettant d'insérer des rondelles ou des plaquettes en carbure de tungstène. En moyenne il y a de 2 à 10 rondelles ou plaquettes sur chaque disque. Chaque rondelle ou plaquette est percée de plusieurs trous ou fentes. Le nombre de trous ou de fentes est de 2 à 4, mais peut-être plus important. Les rondelles font en moyenne 12 millimètres de diamètre. Les plaquettes font en moyenne 12 millimètres de longueur pour 10 millimètres de largeur. Mais ces dimensions ne sont pas limitatives.In these disks are machined several bores for inserting washers or platelets tungsten carbide. On average there are 2 to 10 washers or wafers on each disc. Each washer or plate is pierced with several holes or slots. The number of holes or slots is 2 to 4, but perhaps more important. The washers are on average 12 millimeters in diameter. The plates are on average 12 millimeters long and 10 millimeters wide. But these dimensions are not limiting.
L'épaisseur de chaque organe d'éjection est en moyenne de 2 à 3 millimètres. Mais cette épaisseur peut aussi être supérieure à 3 millimètres. Le diamètre de chaque trou percé dans l'organe d'éjection en carbure de tungstène est de façon préférentielle de 500 microns. Mais ce diamètre peut-être aussi plus important jusqu'à 1 à 2 millimètres ou plus fin, jusqu'à 10 micromètres. Il est possible également de remplacer les trous d'éjection, par des fentes, qui seront par principe, plus longues que larges. Et pour utiliser des fentes extrêmement fines de l'ordre de moins de cent micromètres, les rondelles ou plaquettes en carbure de tungstène dits organes d'éjections, ne seront plus usinées, mais deux moitiés, seront assemblées dans un ensemble en carbure de tungstène plus grand.The thickness of each ejection member is on average 2 to 3 millimeters. But this thickness can also be greater than 3 millimeters. The diameter of each hole drilled in the tungsten carbide ejection member is preferably 500 microns. But this diameter may also be larger up to 1 to 2 millimeters or thinner, up to 10 micrometers. It is also possible to replace the ejection holes, by slots, which will be principle, longer than wide. And to use extremely thin slits of the order of less than one hundred micrometers, the tungsten carbide washers or washers called ejections organs, will no longer be machined, but two halves, will be assembled in a set of tungsten carbide more great.
Le principe de l'invention fait que les conduits d'accélération de chaque orifice d'éjection sont regroupés en un canal commun. Le diamètre de ce conduit commun à tous les orifices d'éjection qui est aussi de façon avantageuse, l'axe de rotation du disque est de façon préférentiel compris entre 2 et 4 millimètres. Mais il peut être aussi comme tous les canaux de buse, compris entre 1 et 8 millimètres.The principle of the invention is that the acceleration ducts of each ejection orifice are grouped into a common channel. The diameter of this duct common to all the ejection orifices which is also advantageously, the axis of rotation of the disk is preferably between 2 and 4 millimeters. But it can also be like all nozzle channels, between 1 and 8 millimeters.
En dissociant les fonctions des buses en deux parties, la présente invention permet d'alléger grandement le dispositif, qui devient un outil manuel facilement maniable, comme une micro ponceuse. Les parties très lourdes de toutes les buses sont remplacées par un seul conduit de buse commun à tous les orifices d'éjection. Le disque peut-être ainsi être moins volumineux. Diminué de l'épaisseur des conduits d'accélération des buses et du poids des buses, ce principe autorise ainsi à entraîner le disque ou plateau rotatif à des vitesses très élevées, de plus de 500 tours par minute, sans vibrations excessives, ni blocage du dispositif.By dissociating the functions of the nozzles into two parts, the present invention makes it possible to greatly lighten the device, which becomes an easily manageable manual tool, such as a micro-sander. The very heavy parts of all the nozzles are replaced by a single nozzle duct common to all the ejection ports. The disc may thus be less bulky. Reduced by the thickness of the nozzle acceleration ducts and the weight of the nozzles, this principle makes it possible to drive the disk or turntable at very high speeds, of more than 500 revolutions per minute, without excessive vibrations or blockage of the rotor. device.
De par ce principe, l'arbre du moteur pneumatique ou axe de rotation qui transmet la rotation au disque ou plateau , peut, s'il est percé dans le sens de sa longueur avoir une double fonction et faire office de canal commun de buse permettant d'accélérer le mélange air-abrasif. La réalisation de l'outil de l'invention se fait ainsi avantageusement à partir d'une pièce d'adaptation de renvoi d'angle d'un moteur pneumatique. Pièce dans laquelle, l'axe central du renvoi d'angle est percé dans le sens de sa longueur. Il sert ainsi de conduit d'accélération commun à tous les orifices d'échappement et d'axe de rotation du disque ou plateau.By this principle, the shaft of the pneumatic motor or axis of rotation which transmits the rotation to the disk or plate, can, if it is pierced in the direction of its length have a dual function and act as a common nozzle channel allowing to accelerate the air-abrasive mixture. The embodiment of the tool of the invention is thus advantageously from an adapter part of the angle of a pneumatic motor. Part in which, the central axis of the angle gear is pierced in the direction of its length. It thus serves as an acceleration conduit common to all the exhaust ports and axis of rotation of the disc or plate.
Aussi, avantageusement, la buse qui est déjà équipée de deux roulements étanches, en l'équipant de 5 fines palettes, peut avoir une double fonction : buse et rotor. Et en ajoutant des flasques et un cylindre double, l'ensemble devient un moteur, pouvant entraîner directement en rotation le plateau. La buse de l'outil en étant dans l'axe et de diamètre fin d'environ 3 millimètres peut-être en même temps l'arbre du moteur. Ou dans le cas d'un moteur à renvoi d'angle, la buse, en étant dans l'axe et de diamètre fin d'environ 3 millimètres, peut servir aussi d'arbre du renvoi d'angle d'un moteur pneumatique.Also, advantageously, the nozzle which is already equipped with two sealed bearings, by equipping it with 5 thin vanes, can have a dual function: nozzle and rotor. And by adding flanges and a double cylinder, the assembly becomes a motor, which can directly rotate the plate. The nozzle of the tool being in the axis and of fine diameter of about 3 millimeters perhaps at the same time the motor shaft. Or in the case of a motor with a bevel gear, the nozzle, being in the axis and with a diameter of about 3 millimeters, can also serve as a shaft of the angle of a pneumatic motor.
Bien que le problème de l'émission de poussières soit avec la présente invention devenu, de par la très faible consommation d'air, un problème réellement secondaire, l'outil peut être équipé d'un système intégré d'aspiration des poussières. Le disque de projection peut-être équipé en périphérie de palettes d'aube centrifuge en plastique ou en aluminium directement relié à un petit sac aspirateur ou relié à une deuxième source d'aspiration plus lointaine, de type aspirateur centrifuge industriel.Although the problem of dust emission with the present invention has become, by the very low air consumption, a really secondary problem, the tool can be equipped with an integrated system for dust extraction. The projection disk can be equipped at the periphery with plastic or aluminum centrifugal vane paddles directly connected to a small vacuum bag or connected to a second, more distant suction source, such as an industrial centrifugal vacuum cleaner.
Une autre solution consiste à insuffler de l'air comprimé à grande vitesse à travers un interstice annulaire de très faible largeur situé directement sur l'outil de projection, afin par accélération de la vitesse de l'air dans le carter de projection, d'aspirer les poussières produites. L'air comprimé poussé dans ce fin interstice annulaire pourra même provenir avantageusement de l'échappement du moteur pneumatique qui assure la rotation du disque ou plateau.Another solution is to blow compressed air at high speed through an annular gap of very small width located directly on the projection tool, in order to accelerate the speed of the air in the projection casing. aspirate the dust produced. The compressed air pushed into this fine annular gap may even advantageously come from the exhaust of the pneumatic motor which ensures the rotation of the disk or plate.
A partir d'une buse de sablage, l'invention a les particularité suivantes : les fonctions accélération et éjection de cette buse sont dissociées en deux parties. Ce qui permet sans colmatage, dans le long conduit d'accélération de la buse, d'utiliser simplement à la sortie, des organes d'éjection, de type trous ou fentes excessivements fins, pouvant même être inférieurs à 400 micromètres de diamètre. Le canal de buse rotatif ou non est commun à tous les orifices d'éjection, il débouche sur un cône brise-jet chargé d'éclater le mélange air-poudre afin de l'orienter vers ces organes d'éjections, de type trous ou fentes. Ces organes sont disposés en plus ou moins grand nombre dans un disque ou plateau et en ce que ledit disque ou plateau est entraîné en rotation de préférence par des moyens moteurs de type mini-turbine, à de très hautes vitesses, ces vitesses sont entre 4.000 et 12.000 tours par minute.From a sanding nozzle, the invention has the following particularity: the acceleration and ejection functions of this nozzle are split into two parts. Which allows without clogging, in the long duct of acceleration of the nozzle, to simply use at the outlet, ejection organs, such as holes or slots excessively thin, may even be less than 400 micrometers in diameter. The rotary nozzle channel or not is common to all the ejection orifices, it opens on a jet-cone charged to burst the air-powder mixture in order to direct it towards these ejection organs, holes or slots. These members are arranged more or less in a disk or plate and in that said disk or plate is rotated preferably by motor means of the mini-turbine type, at very high speeds, these speeds are between 4,000 and 12,000 rpm.
Ces caractéristiques permettent un travail à haute pression. De par son faible poids, encombrement et de par sa maniabilité, l'outil peut également être directement adapté sur un bras de robot industriel et assurer des travaux comme le ponçage de carlingues d'avions et de carrosseries automobile.These features allow high pressure work. Due to its low weight, size and maneuverability, the tool can also be directly adapted to an industrial robot arm and provide work such as sanding aircraft cabins and automobile bodies.
La présente invention concerne un outil pneumatique, qui décapage par effet de coussin d'air chargé de poudre abrasive. Cet outil manuel permet de poncer des supports particulièrement délicats comme l'épiderme de peau, les fines polychromies, les sculptures très fragiles et tous types de supports plus ou moins fragiles.The present invention relates to a pneumatic tool, which stripping by air cushion effect loaded with abrasive powder. This hand tool can sand particularly delicate substrates such as skin epidermis, fine polychromies, very fragile sculptures and all types of more or less fragile supports.
Le jet de la buse de projection d'air comprimé et de poudre abrasive est éclaté par un cône brise-jet ; celui-ci est chargé de modifier l'angle de sortie du jet sortant du canal d'accélération de la buse pour l'orienter vers les organes d'éjections, de type trous ou fentes qui sont situés dans le disque ou plateau rotatif.The jet of the jet of compressed air and abrasive powder is exploded by a jet-cone; the latter is responsible for modifying the exit angle of the jet leaving the acceleration channel of the nozzle to direct it towards the ejection organs, such as holes or slots that are located in the disk or turntable.
Selon des modes de réalisations préférentiels de l'outil de l'invention, on a recours en outre à l'une et/ou à l'autre des dispositions suivantes :
- Les multiples trous ou fentes d'éjection de la poudre abrasive sont ménagés avantageusement par perçage, droit ou incliné et dans un matériau résistant à l'usure de l'éjection de l'abrasif, comme l'est par exemple, le carbure de tungstène ; l'épaisseur de chaque rondelle ou plaquette est comprise
entre 1et 5 millimètres, et ladite ou lesdites rondelles sont fixées en plus ou moins grand nombre, de façon droite ou légèrement inclinée sur le disque ou plateau qui ferme la buse ; - le disque ou plateau qui contient les rondelles ou les plaquettes percés de fins orifices est entraîné à des très haute vitesse de rotation ;
- les trous d'éjections dans les rondelles ou les plaquettes sont d'un diamètre fin, compris entre 10 micromètres et 4 millimètres ;
- les fentes percées dans les plaquettes sont d'une longueur de plusieurs millimètres ou dizaines de millimètres et d'une largeur fine comprise
entre 10 micromètres et 4 millimètres; - la quantité de rondelles ou de plaquettes insérées dans le disque en Téflon est multiple, le nombre d'orifices d'éjection, percés dans ces organes en matériau résistant à l'usure de l'abrasion, aussi.
- l'épaisseur des rondelles ou des plaquettes est comprise
entre 1millimètre et 5 millimètres ; - le disque ou plateau (24) est sur toute sa surface, l'organe d'éjection de faible épaisseur, en matériau résistant à l'usure de l'abrasion, et percé de multiples orifices d'éjection très fins ;
- le disque ou plateau qui supporte les rondelles ou plaquettes à un diamètre compris entre 4 millimètres et 250 millimètres ;
- le disque ou plateau est équipé d'une rondelle en feutre ou caoutchouc chargée d'amortir le contact de l'outil sur le support à poncer en cas de travail par contact ou au plus près ;
- les parties fixe d'arrivée du mélange air-abrasif et les parties rotatives sont montées au sein d'un carter, lequel carter est vissé sur un moteur ou un outil manuel de type ponceuse ou meuleuse pneumatique ;
- l'axe central d'un moteur pneumatique à renvoi d'angle ou d'un moteur pneumatique est utilisé comme buse ou comme canal étroit de passage d'air comprimé et d'abrasif de granulométrie inférieure à 200 micromètres ;
- l'outil pneumatique comporte un diffuseur de poudre abrasive qui permet de limiter au gramme près le débit de poudre, celui-ci se présente sous la forme d'une mini-cuve d'abrasifs, ladite mini-cuve est équipée dans la partie écoulement d'un petit tube flexible souple facile à resserrer, pour permettre un dosage très fin et très précis au gramme près de la poudre. Ce petit tube flexible qui est très souple sous l'effet de l'air comprimé fera office de vibreur, pour faciliter l'écoulement de l'abrasif. Cette mini cuve pouvant être équipée d'un petit vérin pneumatique ou d'une buse de soufflage pour purger de façon séquentielle la zone d'écoulement ;
- Un bouton de commande situé sur l'outil permet d'ouvrir et de fermer automatiquement l'arrivée de l'abrasif, ce qui permet de fractionner de façon séquentielle, cette arrivée de l'abrasif et de faire circuler durant tout le reste du temps simplement de l'air, dans les canalisations et les orifices d'éjections, pour les purger.
- l'axe de rotation du disque qui fait office en son centre de conduit d'accélération de buse et qui est déjà équipée sur sa face extérieure de deux roulements étanches sert directement de moteur pneumatique, la buse servira en sa face externe de rotor et sera équipée de 5 fines palettes, d'une flasque avant et d'une flasque arrière, l'ensemble sera équipé d'un cylindre double paroi percée de plusieurs trous permettant le passage d'un air comprimé sec et propre venant d'un compresseur pneumatique et servant à faire tourner la partie rotative de l'outil ;
- l'outil comporte un système d'aspiration agissant à proximité de la tête de travail pour aspirer les résidus dans l'espace annulaire séparant cette dernière de la paroi du pistolet, vers une gaine d'évacuation, ledit système d'aspiration comportant des moyens insuffler de l'air comprimé à grande vitesse au travers d'un interstice annulaire de faible largeur, situé directement sur l'outil de projection, afin d'aspirer les poussières ; l'air comprimé insufflé par l'espace annulaire pour aspirer les poussières produites peut avantageusement provenir de l'échappement du moteur pneumatique ;
- la poudre utilisée est comprise
entre 1 et 200 micromètres et cette granulométrie est fortement bien calibrée par plages de 10 microns ; - L'extrême finesse des orifices de projection est obtenu par assemblage de deux demi rondelles ou plaquettes en carbure de tungstène ;
- le disque est équipé de moyens comme un mandrin auto-serrant permettant de pouvoir fixer ou retirer rapidement le disque ou le plateau pour le changer et adapter ainsi différents types de disque ou plateau, de diamètre plus ou moins grands et ayant des orifices d'éjection plus ou moins fins.
- le disque ou plateau est aussi équipé en son centre ou en périphérie d'un excentrique chargé d'exercer un mouvement automatique permettant à l'outil durant le travail de décapage, de glisser sur le support à poncer ;
- The multiple holes or ejection slots of the abrasive powder are advantageously provided by drilling, straight or inclined and in a wear-resistant material of the ejection of the abrasive, as is, for example, tungsten carbide ; the thickness of each washer or wafer is between 1 and 5 millimeters, and said wash or washers are fixed in greater or lesser number, in a straight or slightly inclined manner on the disc or tray which closes the nozzle;
- the disk or plate which contains the washers or plates pierced with fine orifices is driven at very high rotational speeds;
- the ejections holes in the washers or platelets are of a diameter end, between 10 micrometers and 4 millimeters;
- the slots pierced in the plates are of a length of several millimeters or tens of millimeters and of a fine width of between 10 micrometers and 4 millimeters;
- the amount of washers or platelets inserted into the Teflon disk is multiple, the number of ejection orifices, drilled in these bodies of material resistant to abrasion wear, too.
- the thickness of the washers or platelets is between 1 millimeter and 5 millimeters;
- the disc or plate (24) is over its entire surface, the ejection member of small thickness, abrasion-resistant wear material, and pierced with multiple very fine ejection orifices;
- the disk or plate which supports the washers or platelets with a diameter of between 4 millimeters and 250 millimeters;
- the disc or tray is equipped with a felt or rubber washer to dampen the contact of the tool on the sanding surface when working by contact or as close as possible;
- the fixed air-abrasive mixture inlet parts and the rotating parts are mounted within a housing, which housing is screwed on a motor or a manual tool of the sander type or pneumatic grinder;
- the central axis of an air motor with a bevel gear or a pneumatic motor is used as a nozzle or as a narrow channel for the passage of compressed air and abrasive with a particle size of less than 200 micrometers;
- the pneumatic tool comprises an abrasive powder diffuser which makes it possible to limit the flow of powder to the nearest gram, this latter is in the form of a mini-tank of abrasives, the said mini-tank is equipped in the flow part a small flexible flexible tube easy to tighten, to allow a very fine and very precise dosage to the gram near the powder. This small flexible tube which is very flexible under the effect of compressed air will act as a vibrator, to facilitate the flow of the abrasive. This mini tank can be equipped with a small pneumatic cylinder or a blow nozzle to purge sequentially the flow area;
- A control button on the tool automatically opens and closes the arrival of the abrasive, allowing the abrasive to be sequentially split and circulated for the rest of the time. just air, in the pipes and ejections, to purge them.
- the axis of rotation of the disc which is used in its center of nozzle acceleration duct and which is already equipped on its outer face with two sealed bearings is used directly as a pneumatic motor, the nozzle will serve in its external rotor face and will be equipped with 5 thin vanes, a front flange and a rear flange, the assembly will be equipped with a double-walled cylinder pierced with several holes allowing the passage of dry and clean compressed air coming from a pneumatic compressor and for rotating the rotatable portion of the tool;
- the tool comprises a suction system acting near the working head to suck the residues in the annular space separating the latter from the wall of the gun, towards a discharge duct, said suction system comprising means injecting compressed air at high speed through a narrow annular gap, located directly on the projection tool, in order to suck up the dust; compressed air blown by the annular space to suck the dust produced may advantageously come from the exhaust of the air motor;
- the powder used is between 1 and 200 microns and this particle size is well calibrated in 10 micron ranges;
- The extreme fineness of the projection orifices is obtained by assembling two half washers or platelets of tungsten carbide;
- the disc is equipped with means such as a self-tightening mandrel making it possible to quickly fix or remove the disc or the plate to change it and thus adapt different types of disk or plate, of greater or lesser diameter and having ejection orifices more or less fine.
- the disk or plate is also equipped at its center or at the periphery of an eccentric charged with exerting an automatic movement allowing the tool during the stripping work to slide on the support to be sanded;
Le dispositif de l'invention comprend en amont un compresseur qui fournit un air comprimé sec et propre. La pression de travail fournit par le compresseur est comprise entre 1 et 10 bars. Pour certains types de travaux, de par les caractéristiques de la présente invention, cette pression pourra même être supérieur à 10 bars. Pouvant être même de 20 ou 25 bars pour des supports durs ou assez durs.The device of the invention comprises, upstream, a compressor which supplies dry and clean compressed air. The working pressure supplied by the compressor is between 1 and 10 bar. For certain types of work, by the characteristics of the present invention, this pressure may even be greater than 10 bars. Can be even 20 or 25 bar for hard or hard media.
D'autres caractéristiques et avantages de l'invention apparaîtront de la description de différents modes de réalisation, donnés uniquement à titre d'exemple, et représentés dans les dessins annexés dans lesquels :
- la
figure 1 est une vue générale, en perspective, de l'outil de ponçage ; - la
figure 2 est une vue en face d'un disque ou plateau de projection muni de trous d'éjections et de plaquettes en carbure de tungstène ; - la
figure 3 est une vue en coupe, schématique, de l'outil de ponçage ; - la
figure 4 est une vue en coupe d'une mini cuve d'abrasif pouvant équiper l'outil de ponçage ; - la
figure 5 est une vue de côté d'un outil pour le nettoyage des polychromies; - la
figure 6 est une vue de face du disque de nettoyage équipant l'outil de lafigure 5 ; - la
figure 7 est une rondelle de carbure de tungstène percée de multiples trous, vue de face et vue en coupe ; - la
figure 8 est une vue en perspective d'un outil pour le ponçage de la peau ; - la
figure 9 est une vue en perspective d'un buse équipée de palettes pour la rotation ; - la
figure 10 représente une vue en coupe d'un ensemble moteur - partie rotative de l'outil de ponçage, et son équipement pour l'évacuation de l'air comprimé du moteur qui sert également à l'aspiration des poussières produites par le nettoyage ; - la
figure 11 est une vue générale en perspective, du côté de sa surface interne, d'un disque ou plateau en Téflon usiné pour recevoir des organes d'éjections en carbure de tungstène, et de la vue du dit organe d'éjection sous forme de plaquette à emboîter dans l'usinage du disque, ainsi que le positionnement de deux organes emboîtés dans leur rainure, les trous qui apparaissent dans la cavité en Téflon usinée n'ont aucune fonction, hormis, celle de rendre invisible les organes d'éjection du côté de la face extérieure du disque ou plateau rotatif ; - la
figure 12 est une vue en coupe du plateau de projection selon lafigure 11 , convenablement monté sur son support.
- the
figure 1 is a general perspective view of the sanding tool; - the
figure 2 is a view in front of a disk or projection plate provided with ejection holes and tungsten carbide plates; - the
figure 3 is a schematic sectional view of the sanding tool; - the
figure 4 is a sectional view of a mini abrasive tank that can equip the sanding tool; - the
figure 5 is a side view of a tool for cleaning polychromies; - the
figure 6 is a front view of the cleaning disk equipping the tool of thefigure 5 ; - the
figure 7 is a tungsten carbide washer pierced with multiple holes, front view and sectional view; - the
figure 8 is a perspective view of a tool for sanding the skin; - the
figure 9 is a perspective view of a nozzle equipped with vanes for rotation; - the
figure 10 represents a sectional view of a motor assembly - rotating part of the sanding tool, and its equipment for the evacuation of compressed air from the engine which also serves for the suction of the dust produced by the cleaning; - the
figure 11 is a general perspective view, on the side of its inner surface, a Teflon disk or plate machined to receive tungsten carbide ejection members, and the view of said ejection member in the form of a plate fit into the machining of the disk, as well as the positioning of two members nested in their groove, the holes that appear in the machined Teflon cavity have no function, except that to make invisible the ejection organs on the side of the outer face of the disc or turntable; - the
figure 12 is a sectional view of the projection plate according to thefigure 11 , properly mounted on its support.
L'outil de décapage selon l'invention et la
Ce corps de révolution 1, 2 est montée sur un moteur-turbine 28 destinée à entraîner la partie rotative 1 et le plateau ou disque 24 ; ce moteur-turbine 28 forme également poignée de préhension de l'outil pour un opérateur.This body of
Comme observé sur la
Ce disque ou plateau 24 est équipé de plusieurs plaquettes 41 en carbure de tungstène d'une épaisseur de 3 millimètres et percé de plusieurs trous 10 très fins de l'ordre de 500 micromètres.This disk or
L'extrémité aval du canal d'accélération 4 débouche sur un cône brise-jet 23 ; ce cône brise-jet 23 s'étend coaxialement audit canal 4 et est situé au centre de la surface interne du disque ou plateau 24.The downstream end of the
Le canal d'accélération 4 a une section d'environ 3 millimètres et une longueur de 7 millimètres. Le disque ou plateau 24 a sur la
Sur la
Le moteur-turbine à haute vitesse 28 précité est solidarisé au carter 17 par des moyens de vissage 18 (
De manière générale; pour le décapage de l'épiderme, l'utilisation de ce petit réservoir à abrasif, mini cuve 5 permet une stérilisation de l'abrasif. Ces mini cuves à poudre sont sous forme de petits flacons.Generally; for the stripping of the epidermis, the use of this small abrasive tank,
L'abrasif peut-être calibré dans des plages granulométriques de 10 micromètres. Par exemple, les mini cuves 5 peuvent être utilisées par catégories de plage à granulométrie précise : par exemple, un flacon de poudre comprise entre 10 et 20 micromètres, etc...The abrasive can be calibrated in size ranges of 10 micrometers. For example, the
Comme sur la
Cette mini cuve 5 comme sur la
La poudre contenue dans la mini-cuve 5 descent par gravité par un conduit 20 dans lequel se trouve un embout plastique creux 21 ; une arrivée d'air comprimé 14 met la cuve sous pression ; ce qui favorise l'écoulement de la poudre au travers du conduit 20 ; lorsque l'air comprimé passe en dessous, il se mélange avec un peu de poudre abrasive.The powder contained in the
Un petit vérin pneumatique 15 est également prévu pour éviter un colmatage dudit tube plastique 21, pour de façon séquentielle manoeuvrer en translation une tige 37 située au niveau du tube plastique 21, pour le déboucher, si besoin.A small
En référence à ces dessins :With reference to these drawings:
En pratique, en appuyant sur la manette (9), l'air comprimé arrive par l'embout (26) dans le moteur (28), qui provoque alors l'entraînement de l'axe de rotation 1 qui entraîne en rotation le disque ou plateau 24.In practice, by pressing the handle (9), the compressed air arrives through the tip (26) in the motor (28), which then causes the driving of the axis of
L'ouverture d'un bouton (19), permet de régler l'ouverture ou la fermeture de l'arrivée d'air comprimé dans l'outil, et par conséquent le débit d'air projeté. L'air comprimé arrive directement du compresseur dans le pistolet par l'embout (3). L'air comprimé arrive donc dans le pistolet de ponçage par l'embout (3) non chargé en abrasifs.The opening of a button (19) makes it possible to adjust the opening or closing of the compressed air inlet in the tool, and consequently the projected air flow rate. The compressed air arrives directly from the compressor into the gun via the nozzle (3). The compressed air thus arrives in the sanding gun by the tip (3) not loaded with abrasives.
Lorsque la mini-cuve est sur l'outil, en ouvrant le bouton (12) l'abrasif contenu dans la cuve (5) descend en passant dans le canal (20). En intervenant sur ce bouton (12) on régule le volume d'abrasif qui arrive, ce qui permet de moduler au gramme près le dosage le dosage d'abrasifs dans l'air comprimé. Ceci est en particulier possible par le fait que l'écoulement de l'abrasif se fait au travers du petit conduit en plastique souple et creux 21, flottant et vibrant au niveau du canal 20. Le petit tube (21) peut donc être resserré par la vis (12) jusqu'au réglage le plus fin possible ; cela permet aussi en fermant complètement la vis (12) de purger à tous moments les conduits en ne laissant circuler dans le canal (4) et les orifices d'éjections 10 et 11 que de l'air sec et propre venant de l'embout (3).When the mini-tank is on the tool, by opening the button (12) the abrasive contained in the tank (5) down through the channel (20). By intervening on this button (12) the volume of abrasive which arrives is regulated, which makes it possible to modulate to the gram close the dosage dosage of abrasives in the compressed air. This is in particular possible by the fact that the flow of the abrasive is through the small flexible and hollow plastic conduit 21, floating and vibrating at the
Le mélange air sous pression/particules abrasives est ensuite accéléré tout au long du canal d'accélération 4 jusqu'à aboutir dans l'espace fermé, où le cône brise-jet 23 assure son orientation vers les orifices d'éjections, simples trous 10 ou fentes 11. Ces orifices, lorsqu'il s'agit de trous, ont un diamètre préférentiel de l'ordre de 500 micromètres.The pressurized air / abrasive particles mixture is then accelerated along the
Le disque ou plateau 24, entraîné par la mini-turbine à haute vitesse, tourne à des vitesses nettement supérieures à 500 tours par minute. Les vitesses du disque ou plateau 24 sont entre 4000 et 12000 tours par minute. Les jets d'air comprimés sont ainsi mis en rotation, à la vitesse de celle du disque ou plateau 24 ;The disc or
L'appareil s'applique alors le plus souvent à quelques millimètres de la surface à traiter, dès fois presque par contact ; à cette distance, le ponçage se fait comme si la ponceuse disposait d'un disque d'air comprimé dans lequel flotte des poudres abrasives. Lorsque l'opérateur souhaite arrêter son intervention, il lui suffit de fermer d'abord le bouton (12) d'arrivée de particules abrasives, puis le bouton (19), d'arrivée d'air sous pression et enfin de relâcher la manette (9), correspondant à l'arrivée de l'air dans le moteur.The device then applies most often to a few millimeters of the surface to be treated, sometimes almost by contact; at this distance, the sanding is done as if the sander had a compressed air disk in which abrasive powders float. When the operator wishes to stop his intervention, it is sufficient for him to first close the button (12) of arrival of abrasive particles, then the button (19), pressurized air inlet and finally release the joystick (9), corresponding to the arrival of air in the engine.
De manière avantageuse, il est possible :
- De diffuser de façon séquentielle uniquement de l'air comprimé dans l'outil, afin de purger plus ou moins régulièrement le canal d'accélération de la buse (4) et les orifices d'éjections (10 et 11) ;
- d'équiper l'outil de vanne pilote sélective pneumatique à commande séparée et fonctionnant éventuellement de façon séquentielle ; dans ce contexte, on emploie par exemple une vanne sélective pneumatique pour l'entrée d'air dans le moteur 28, une vanne sélective pneumatique pour l'entrée d'air
par l'embout 3, une vanne pneumatique actionne l'ouverture et la fermeture de la vanne 20 d'abrasif.
- To sequentially diffuse only compressed air into the tool, in order to purge more or less regularly the acceleration channel of the nozzle (4) and the ejection ports (10 and 11);
- equipping the pneumatic selective pilot valve tool with separate control and possibly operating sequentially; in this context, for example, a pneumatic selective valve is used for the entry of air into the
motor 28, a pneumatic selective valve for the entry of air through thenozzle 3, a pneumatic valve actuates the opening and the closing thevalve 20 abrasive.
La
La
De manière générale, les rondelles 27 décrites ci-dessus en relation avec les
L'outil représenté sur la
La
La
La réalisation du disque ou plateau 24 est représentée sur les
Toujours sur la
Claims (13)
- A pneumatic tool for cleaning and scraping including a anti-splash cone (23) and a disc or rotary platen (24) intended for ejecting a mixture of compressed air and abrasive after bursting against the anti-splash cone (23),
wherein said disc or rotary platen (24) is driven into rotation by motorised means such as a mini-turbine (28) which are adapted to reach very high speeds, these very high speeds ranging between 4000 and 12000 revolutions per minute,
said disc or rotary platen (24) includes at least one housing (40) and several ejection members (27, 41) of small thicknesses, such as washer, tab, board or flat, made of a material resistant to the wear caused by the ejection of said abrasive, for instance such as tungsten carbide, and arranged along a straight line or tilted within said disc or rotary platen (24), said ejection members (27, 41) being fitted with one or several ejection ports (10, 11) intended for ejecting said mixture of compressed air-abrasive, said ejection ports (10, 11) extending straight or tilted, and for at least one portion of their thickness in said ejection member(s) (27, 41), and
that it includes a supply conduit (4) forming an acceleration nozzle of the mixture of compressed air - abrasive common to all said ejection ports (10, 11), said acceleration nozzle (4) being rotary or not,
this in order to be able to work at closest to the surface to be treated, and to obtain, for instance by means of a thin abrasive powder whereof the size distribution ranges between 1 and 200 µm, calibrated by steps of 10 micrometres, a sanding operation by an disc /air cushion - abrasive effect. - A pneumatic tool according to claim 1, characterised in that the disc or rotary platen (24) includes, on its internal face, a cone (23) ensuring the orientation of the compressed air/abrasive powder mixture from the acceleration conduit (4).
- A pneumatic tool according to any of the claims 1 or 2, characterised in that the nozzle acceleration duct (4) exhibits a diameter ranging between 1 and 8 mm.
- A pneumatic tool according to any of the claims 1 to 3, characterised in that the motorised means consist of a mini-turbine (28), of pneumatic type.
- A pneumatic tool according to any of the claims 1 to 4, characterised in that the shaft of the motorised means (28) or of its angle transmission is drilled in the direction of the length to act as a nozzle acceleration duct (4), in order to fulfill a double function for driving in rotation and accelerating the air-abrasive mixture.
- A pneumatic tool according to any of the claims 1 to 5, characterised in that the ejection member(s) (27, 41) have a width ranging between 100 micrometres and 5 millimetres.
- A pneumatic tool according to any of the claims 1 to 6, characterised in that the ejection ports (10,11) are obtained by assembling two portions made of material resistant to the wear caused by the ejection, for instance such as tungsten carbide.
- A pneumatic tool according to any of the claims 1 to 7, characterised in that the ejection ports (10) are in the form of holes, whereof the diameter ranges between 10 micrometres and 4 millimetres.
- A pneumatic tool according to any of the claims 1 to 8, characterised in that the ejection ports (11) are in the form of slots, with a width ranging between 10 micrometres and 2 millimetres for a length of 1 millimetre to several centimetres.
- A pneumatic tool according to any of the claims 1 to 9, characterised in that it comprises a suction system operating close to the working head for sucking in the residues in the annulus space separating the latter from the wall of the gun, toward an evacuation conduit, which suction system includes - means for injecting compressed air at high speed through an annular clearance (32), of small width, situated directly on said tool and/or - plastic or aluminium vanes, mounted on the disc or platen (24), connected directly to a small vacuum bag or to a second, more remote suction source, such as an industrial centrifugal vacuum cleaner.
- A pneumatic tool according to any of the claims 1 to 10, characterised in that the nozzle (1) fitted with two watertight bearings (22) is used directly as a pneumatic motor, the thickness of said nozzle (1) acting as a rotor (38) and being fitted with five thin blades (31), with a front flange (36) and a rear flange (37), the assembly being fitted with a double-wall cylinder (34) drilled with several openings (30) letting through the dry and clean compressed air coming from a pneumatic compressor and used for rotating the nozzle (1) and the disc (24).
- A pneumatic tool according to any of the claims 1 to 11, characterised in that its disc or platen (24) exhibits a diameter ranging between 4 millimetres and 250 millimetres.
- A method for operating a pneumatic tool for cleaning and scraping with a tool according to any of the claims 1 to 12,
characterised in that it consists :- in driving in rotation said disc or rotary platen (24) at a velocity between 4000 and 12000 revolutions per minute,- in accelerating said air - abrasive mixture over the length of the single supply conduit (4), forming an acceleration nozzle,- in projecting an abrasive such as an abrasive powder whereof the size distribution ranges between 1 and 200 µm, calibrated by steps of 10 micrometres, and- in projecting the air - abrasive mixture at a pressure ranging between 1 and 25 bars, via said ejection ports (10, 11) whereof the diameter is at most 1 to 2 mm, for instance of the order of 500 µm, to obtain a sanding operation by disc / air cushion - abrasive effect, the method being not applied to human or animal body.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0502238A FR2882673B1 (en) | 2005-03-07 | 2005-03-07 | PNEUMATIC TOOL WITH SANDING EFFECT |
PCT/FR2006/000499 WO2006095079A2 (en) | 2005-03-07 | 2006-03-06 | Micro-sander that provides a sanding effect using an abrasive/air disc |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1858669A2 EP1858669A2 (en) | 2007-11-28 |
EP1858669B1 true EP1858669B1 (en) | 2008-12-17 |
Family
ID=34954883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06726031A Not-in-force EP1858669B1 (en) | 2005-03-07 | 2006-03-06 | Micro-sander that provides a sanding effect using an abrasive/air disc |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080171495A1 (en) |
EP (1) | EP1858669B1 (en) |
AT (1) | ATE417704T1 (en) |
DE (1) | DE602006004316D1 (en) |
FR (1) | FR2882673B1 (en) |
WO (1) | WO2006095079A2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK177274B1 (en) * | 2011-05-27 | 2012-09-10 | Flex Trim As | Grinding head |
DK177694B1 (en) * | 2012-12-04 | 2014-03-10 | Poul Erik Jespersen Kadicma | Rotary machining tool |
AU2013204704B2 (en) * | 2013-04-12 | 2014-11-20 | Helen Greenberg | An apparatus and method for delivering media into the skin |
GB201503683D0 (en) | 2015-03-05 | 2015-04-22 | Rolls Royce Plc | A tool for machining an object |
CN109759959B (en) * | 2019-03-19 | 2020-04-17 | 温州益蓉机械有限公司 | Inner cavity sand blasting device for processing breaker shell by adopting bidirectional pneumatic principle |
CN114011772B (en) * | 2022-01-04 | 2022-04-15 | 中南大学 | Equipment for shaping particle copper |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2755598A (en) * | 1954-04-06 | 1956-07-24 | William N Van Denburgh | Rotary blast nozzle |
US4057938A (en) * | 1976-06-17 | 1977-11-15 | Rohlfs John H | Portable sand blasting device |
US4941298A (en) * | 1988-09-28 | 1990-07-17 | Mark Fernwood | Rear reservoir micro sandblaster |
DE3834896A1 (en) * | 1988-10-13 | 1990-04-19 | Kiess Karl Heinz | Blast nozzle for sandblasting equipment for the dust-free blasting of planar surfaces |
FR2643673B1 (en) * | 1989-02-24 | 1991-06-14 | Diat Christian | FACADE CLEANING DEVICE |
FR2643626B1 (en) * | 1989-02-24 | 1991-09-20 | Diat Christian | AUTOMATIC REMOTE CONTROLLED FLOOR MACHINE FOR FACADE CLEANING |
FR2684900B1 (en) * | 1991-12-11 | 1995-03-17 | Christian Diat | MULTI-JET ROTARY NOZZLE FOR SPRAYING VERY FINE ABRASIVE PARTICLES. |
FR2685027B1 (en) * | 1991-12-11 | 1994-04-01 | Christian Diat | MECHANICAL PROCESS FOR CLEANING POLLUTION OF FACADE STONES. |
DE9303546U1 (en) * | 1993-03-11 | 1993-05-27 | Kieß, Karl-Heinz, 4330 Mülheim | Jet nozzle for a sandblasting machine for irradiating flat surfaces |
FR2720662B1 (en) * | 1994-02-01 | 1996-08-23 | Christian Diat | Device for dispensing a mixture of compressed air and powder. |
-
2005
- 2005-03-07 FR FR0502238A patent/FR2882673B1/en not_active Expired - Fee Related
-
2006
- 2006-03-06 AT AT06726031T patent/ATE417704T1/en not_active IP Right Cessation
- 2006-03-06 DE DE602006004316T patent/DE602006004316D1/en not_active Expired - Fee Related
- 2006-03-06 WO PCT/FR2006/000499 patent/WO2006095079A2/en not_active Application Discontinuation
- 2006-03-06 US US11/885,864 patent/US20080171495A1/en not_active Abandoned
- 2006-03-06 EP EP06726031A patent/EP1858669B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
US20080171495A1 (en) | 2008-07-17 |
FR2882673A1 (en) | 2006-09-08 |
WO2006095079A2 (en) | 2006-09-14 |
DE602006004316D1 (en) | 2009-01-29 |
ATE417704T1 (en) | 2009-01-15 |
EP1858669A2 (en) | 2007-11-28 |
FR2882673B1 (en) | 2008-10-31 |
WO2006095079B1 (en) | 2007-01-25 |
WO2006095079A3 (en) | 2006-12-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1858669B1 (en) | Micro-sander that provides a sanding effect using an abrasive/air disc | |
EP0090691B1 (en) | Blast gun for flat jets containing solid abrasive particles | |
EP1963023B1 (en) | Device for spraying a liquid | |
EP2139604B1 (en) | Spraying member, spraying device comprising such a member, spraying installation and method of cleaning such a member | |
EP2429716B1 (en) | Projector and member for spraying a coating material, and spraying method using such a sprayer | |
CA2125187C (en) | Method for micro-cleaning a support and apparatus for implementing same | |
EP2100668B1 (en) | Spray nozzle and liquid spraying device comprising said spray nozzle | |
EP2456567A1 (en) | Device for dispensing fluid jets without a rotating joint | |
CA3097619C (en) | Device and method for the surface treatment of a material | |
EP1221358A2 (en) | Nozzle for concentrated diffusion of a fluid containing solid particles, especially for fine and precise cleaning and inspection of surfaces | |
WO2015022328A1 (en) | Sprayer for a liquid coating product and spraying facility comprising such a sprayer | |
CA2606942C (en) | Pipe, manufacturing process thereof and corresponding tool | |
FR2713974A1 (en) | Device for blasting surfaces not accessible by a straight pipe. | |
WO2013076395A1 (en) | Device for dispensing jets of cryogenic fluid, including a plenum chamber | |
FR2661115A1 (en) | CENTRIFUGAL PULVERIZING DEVICE OF A COATING PRODUCT, IN PARTICULAR FOR APPLICATION BY ELECTROSTATIC PROJECTION. | |
EP0990487B1 (en) | Apparatus for decontaminating surfaces with a jet composed of air, fine grained blasting material and a liquid | |
WO2020201215A1 (en) | Nozzle for a spray system and spray system comprising such a nozzle | |
EP0730498B1 (en) | Surface treatment nozzle and method and device for surface treatment using such a nozzle | |
FR3081110A1 (en) | Device for generating a jet of high pressure fluid | |
FR2508832A1 (en) | Coolant atomiser spray for grinding wheel - has mixing chamber with air pressure nozzle and coolant supply, and supersonic outlet nozzle | |
FR2483265A1 (en) | Internal painting of pipe - uses high speed spiral air current containing drops of paint | |
EP0882522B1 (en) | Lance and apparatus for the production of a liquid jet of CO2 and its use for a surface cleaning installation | |
FR2815552A1 (en) | Rotating nozzle for cleaning surfaces comprises hollow cone with internal helicoidal partitions delimiting corridors of equal width, needle fixed in nozzle inlet amplifies particle gyratory effect | |
WO2022243632A1 (en) | Sandblasting nozzle | |
FR2876599A1 (en) | Fluid jet e.g. pure water jet, forming device for e.g. watering, has body connected by pivot connection to rotor with duct deflecting jet, and lever arm to ensure moment of hydrodynamic forces to be different from zero to rotate rotor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20071008 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
REF | Corresponds to: |
Ref document number: 602006004316 Country of ref document: DE Date of ref document: 20090129 Kind code of ref document: P |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090328 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090317 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090317 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090518 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090417 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 |
|
BERE | Be: lapsed |
Owner name: DIAT, MARTINE Effective date: 20090331 Owner name: DIAT, CHRISTIAN Effective date: 20090331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090331 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 |
|
26N | No opposition filed |
Effective date: 20090918 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090318 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20100306 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100331 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100306 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090306 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090618 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081217 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20121008 Year of fee payment: 7 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20131129 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130402 |