EP3814054B1 - Bloc de meulage destiné à être utilisé manuellement ainsi que système comprenant un bloc de meulage et un article abrasif - Google Patents

Bloc de meulage destiné à être utilisé manuellement ainsi que système comprenant un bloc de meulage et un article abrasif Download PDF

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Publication number
EP3814054B1
EP3814054B1 EP19732590.5A EP19732590A EP3814054B1 EP 3814054 B1 EP3814054 B1 EP 3814054B1 EP 19732590 A EP19732590 A EP 19732590A EP 3814054 B1 EP3814054 B1 EP 3814054B1
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EP
European Patent Office
Prior art keywords
sanding
sanding block
dust
base plate
block
Prior art date
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Application number
EP19732590.5A
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German (de)
English (en)
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EP3814054A1 (fr
Inventor
Simon BIEGGER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP3814054A1 publication Critical patent/EP3814054A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided

Definitions

  • the invention relates to a sanding block for manual use, in particular for manual sanding of surfaces.
  • Grinding is known as a surface treatment of products or objects in various industrial areas such as carpentry and the automotive industry.
  • Abrading can be used for a variety of purposes such as polishing, smoothing, shaping surfaces, repairs, or for specific applications such as removing a layer of paint or leveling putty from a body.
  • Grinding tools are fundamentally characterized by the presence of an abrasive, abrasive surface which is brought into contact with the surface to be treated, which is thereby machined. This can be done manually or by machine. Furthermore, a tool for manual grinding usually has a surface for gripping the tool.
  • Sanding blocks are already known which are intended for manual use, in particular for manual sanding of surfaces, and which have at least one base plate for holding an abrasive article and at least one sanding block body with a grip area, e.g EP 11182793 A1 or US 2006/199484 A1 showing a sanding block according to the preamble of claim 1. It is also known to construct grinding blocks in such a way that they are compatible with commercially available 150 mm grinding wheels, which are actually designed for eccentric grinders, and can therefore be used for manual grinding. Further revealed WO 2017/165215 A2 a grinding block for manual use with a battery-operated device for vacuum generation.
  • the invention is based on a sanding block for manual use, in particular for manual sanding of surfaces, having at least one base plate for holding a sanding article and at least one sanding block body with a grip area.
  • a battery-operated device for extracting grinding dust is integrated into the grinding block, which comprises at least one dust box, a motor housing in which a drive motor provided with a fan wheel is provided, and a battery for mains-independent power supply of the drive motor.
  • a sanding block is for manual use, especially manual sanding of surfaces.
  • the sanding block is also referred to as a sanding block and differs from orbital and eccentric sanders, in which automated or motorized sanding is realized by using a motor that drives a motorized base plate that is movably mounted on the orbital and eccentric sanders. Therefore, in the context of this document, a grinding block is to be understood in such a way that it does not have a motor for carrying out the grinding process in a motorized manner. In this sense, the sanding block is for manual use and manual sanding.
  • the grinding block has a grinding block body, which in one embodiment of the grinding block can be realized as a housing of the grinding block.
  • the grinding block body also has a grip area.
  • the grip area is used by a user to grip the sanding block firmly in order to be able to guide it in a controlled manner while performing a manual sanding movement, in particular over a workpiece.
  • the handle area can be designed as a handle.
  • the gripping area can be at least partially rubberized in order to increase its grip.
  • a backing plate of the sanding block is used to hold and secure an abrasive article to the sanding block, particularly while performing a sanding process.
  • the base plate is preferably designed as part of the sanding block body in one piece with the latter.
  • the base plate is designed to accommodate an abrasive article or may itself have at least one abrasive surface, comparable to a metal plane.
  • the base plate represents a substantially flat surface.
  • the base plate has a material layer suitable for forming a Velcro connection, for example a layer of loops or a layer of flexible barbs.
  • a battery-operated device for sucking off sanding dust Integrated into the sanding block, i.e. arranged in or on the sanding block body and/or at least partially integrated into the sanding block body, is a battery-operated device for sucking off sanding dust.
  • the battery-operated device for suction is used to extract sanding dust that occurs during a sanding process when the sanding block is used manually.
  • the battery-operated device for suction comprises at least one dust box, a motor housing in which a drive motor provided with a fan wheel is provided, and a battery for mains-independent power supply of the drive motor. In this way, grinding dust occurring during a grinding process can be sucked off the surface to be machined particularly efficiently using the battery-operated device for suction and collected in the dust box.
  • the drive motor is supplied with energy, at least when it is switched on, by a rechargeable battery for mains-independent power supply.
  • a rechargeable battery for mains-independent power supply.
  • an accumulator pack consisting of at least one electrochemical accumulator cell, which supplies electrical energy, is to be understood.
  • the battery is in particular a rechargeable secondary battery that can be recharged when connected to a charging station.
  • accumulators with a cell chemistry that provides a high power and/or energy density are suitable for the energy supply, such as accumulators of lithium and lithium-ion cell chemistry, in particular lithium iron phosphate, lithium manganese oxide, lithium nickel -Cobalt manganese oxide, overlithiated lithium nickel cobalt manganese oxide, lithium sulfur, lithium polymer and lithium oxygen accumulators.
  • a self-sufficient sanding block that is independent of the mains power supply, i.e. in particular implemented wirelessly, can be specified, which nevertheless has means for sucking off sanding dust.
  • the sanding block is therefore a particularly handy tool that is always ready for use and can also be used in a clean environment, since the battery-powered suction device minimizes the risk of dust flying around and, in particular, the risk of contamination of the environment. Furthermore, due to the integrated battery-powered suction device, there is no need for a suction device external to the grinding block.
  • an external vacuum cleaner and/or a hose connection from an external vacuum cleaner to the sanding block can be dispensed with, which greatly impedes the use of the sanding block during a manual sanding movement.
  • the weight of the sanding block can advantageously be increased and balanced in such a way that the sanding block lies very well in the hand of the user during a sanding process, i.e. during the manual sanding movement.
  • the dust box can be detachably fixed to the motor housing and can be removed from the outside of the grinding block. In this way it can be realized that the dust box can be easily emptied as soon as it is filled with sanding dust. To do this, the dust box can be removed from the sanding block, emptied and then put back into the sanding block be introduced, again resulting in a detachable fixation on the motor housing.
  • the dust box can also be implemented in the form of a flexible dust bag or the like, which can be detachably fixed to the motor housing. This dust bag can be stowed in the sanding block body or attached to the outside of the sanding block body.
  • the rechargeable battery can also be detachably fixed to the grinding block body and can be removed from the grinding block from the outside. In this way, when the battery is discharged, it can easily be replaced by a further charged battery.
  • the rechargeable battery and/or the dust box can be accommodated at least in sections in the grip area of the sanding block, in particular in a grip on the sanding block. In this way, an arrangement of the removable components of the sanding block that is particularly accessible to the user can be specified, so that a simple exchange of the battery or a simple emptying of the dust box is possible.
  • an operating element for switching the drive motor on and off is arranged on an outer surface of the grinding block.
  • the control element is used to start and stop the suction.
  • a control element can be implemented, for example, in the form of a pushbutton switch, a button, a slide switch or the like.
  • the operating element is arranged on the side of the grinding block that faces the user when using the grinding block.
  • the operating element is preferably arranged in or on the handle area, in particular in or on the handle, so that it is always accessible to the user while the manual grinding movement is being carried out.
  • an air passage opening is formed on the motor housing, to which the dust box can be detachably fastened, the dust box having at least one further air passage opening, to which a filter medium can be arranged.
  • the fan wheel which is set in motion by the drive motor, generates an air flow that is directed from the surface of the workpiece to be machined into the motor housing. The air flow then continues through the motor housing and through the air passage opening into the dust box, with dust transported with the air flow being caught in the filter medium through the further air passage opening when it leaves the dust box.
  • the base plate has at least one opening for sucking off sanding dust, through which dust can be sucked off.
  • the grinding block in one embodiment, the base plate—has an air guiding element for extracting grinding dust, which is connected in particular to the at least one opening and to the battery-operated device for extracting grinding dust. In this way, the grinding dust produced during the grinding process can be sucked off the surface of the workpiece to be machined directly at the point of origin. Contamination of the environment by dust extraction not carried out directly on the workpiece is avoided.
  • the grinding block has a vacuum suction nozzle for sucking off grinding dust, which is arranged on the outside of the grinding block.
  • the vacuum cleaner nozzle is also connected to the battery-operated device for sucking off grinding dust using an air guide element.
  • the vacuum cleaner nozzle can be arranged around the sanding block, for example.
  • the vacuum cleaner nozzle can also be arranged on specific sides of the sanding block, for example on the sides of the sanding block in whose direction the manual sanding movement preferably takes place during a sanding process.
  • the invention relates to a system comprising at least one abrasive block according to the previous description and at least one abrasive article with the base plate of the sanding block is designed to be connectable, wherein the base plate and the abrasive article each have at least one opening, preferably a plurality of openings each, for sucking off sanding dust.
  • the “abrasive article” can be, for example, a coated abrasive article, in particular abrasive paper, abrasive foam, abrasive fabric, abrasive knitted fabric, abrasive fleece or the like.
  • bonded abrasive articles are also conceivable in principle, such as typically synthetic resin-bonded cutting and grinding wheels.
  • the abrasive article can be in different ready-made forms, for example as an abrasive disc or abrasive strips.
  • the one opening of the base plate and the one opening of the abrasive article are in a state in which the abrasive article is connected to the base plate of the grinding block Essentially congruent.
  • FIG 1 a grinding block 10 according to the invention is shown in a perspective view.
  • the sanding block 10 for manual use in particular for manual sanding of surfaces (not shown in detail here), has a base plate 12 for holding an abrasive article 14 .
  • the abrasive article 14 is arranged on the base plate 12 by means of a Velcro fastener, with both the base plate 12 and the abrasive article 14 each having a complementary material layer 16 suitable for forming a Velcro connection, in particular a layer of loops and a layer of flexible barbs.
  • the material layer 16 suitable for forming the Velcro connection is located at least on the underside, in particular at least also on the side surfaces, of the base plate 12.
  • the base plate is in particular shaped in such a way that it forms at least one right-angled corner, in particular two or four right-angled corners trains. Using these right-angled corners, a workpiece can still be ground or polished well into corners.
  • the material layer 16 is also arranged on the side surfaces of the base plate 12 .
  • the circular segments of the round abrasive articles 14 that protrude beyond the underside (abrasive side) of the base plate 12 can be folded up laterally and attached to the layer of material, with the right-angled corners of the underside of the base plate 12 being covered with abrasive article 14 at the same time.
  • the dimensioning of the base plate 12 is chosen such that a 150 mm abrasive article 14 can be fastened on the base plate 12 without any creases, with the protruding circle segments also being able to be folded over onto the side surfaces of the base plate 12 without any creases.
  • the sanding block 10 has a sanding block body 18 with a grip area 20, the grip area 20 being knob-shaped (crowned) here and thus adapting particularly smoothly to a hand enclosing the grip area.
  • the surface of the grip area 20 can be rubberized (not shown in detail here).
  • the grinding block body 18 at least essentially encloses the components of the grinding block 10 that are necessary and/or useful for implementing a battery-operated device 22 for sucking off grinding dust that is integrated into the grinding block 10, cf. figure 2 .
  • a battery receptacle 24 which protrudes into the sanding block body 18 , in particular axially.
  • the battery holder 24 is used for the reversible recording of a battery 26, cf. figure 2 .
  • FIG. 12 shows a schematic sectional view of the embodiment of the grinding block 10 according to the invention figure 1 including sanding block body 18 with grip area 20, base plate 12 and battery receptacle 24, in which a battery 26 is inserted in the illustrated embodiment.
  • the rechargeable battery 26 is used to supply the rechargeable battery-operated device 22 for sucking off grinding dust with energy.
  • the rechargeable battery 26 can be reversibly removed from the grinding block 10 from the outside, since it is detachably fixed to the grinding block body 18 .
  • the rechargeable battery 26 engages, for example, only in sections in the grinding block body 18 and can therefore be accommodated at least in sections in the grip area 20 of the grinding block 10 .
  • the rechargeable battery 34 is designed in the manner of an exchangeable rechargeable battery and is detachably fastened to the sanding block body 18 , for example latched.
  • the rechargeable battery 26 has, for example, a nominal voltage of 10.8 V with an available charge of 1.3 Ah, 1.5 Ah, 2.0 Ah or 4 Ah.
  • the sanding block 10 can optionally have a state of charge display (not shown in more detail here).
  • a dust box 28 and a motor housing 30 are also provided in the interior of the grinding block 10, in particular the grinding block body 18, a dust box 28 and a motor housing 30 are also provided.
  • the dust box 28 can be fixed to the motor housing 30 in a detachable manner.
  • At least one fan wheel 32 and one drive motor 34 are arranged in the motor housing 30, the fan wheel 32 being connected to the drive motor 34 so that it can rotate, in particular so that it can move about a central axis of rotation (rotational shaft).
  • the fan wheel 32 has a plurality of ribs (“blades”, not shown in detail here), which are inclined in the direction of the axis of rotation and, when the fan wheel 32 rotates, air from one Accelerate an area close to the axis of rotation to an area that is radially distant (cf. arrows in figure 2 ).
  • the drive motor 34 is supplied with mains-independent power from the battery 26 .
  • An operating element 36 for switching the drive motor 34 on and off is arranged on a side of the handle area 20 facing the user, i.e. on an outer surface of the sanding block 10 .
  • the operating element 36 is implemented as a capacitive switch, which detects the presence of a hand on the grip area and enables the power supply to the drive motor 34 after the hand has been in place for a defined period of time.
  • the rechargeable battery 34 is electrically conductively connected via contact elements to an electronic unit (not shown in detail here), which is arranged inside the motor housing 30 and connected to the operating element 36 for switching the drive motor 34 on and off.
  • the electronics unit is designed at least to switch the drive motor 34 on and off when the operating element 36 is actuated accordingly and to control the drive motor 34 .
  • the motor housing 30 forms a vacuum cleaner housing with the dust box 28 which has air passage openings 38 formed both on the motor housing 30 and on the dust box 28 .
  • the dust box 28 is or can be detachably connected to the motor housing 30 at this point (interface), in particular fastened thereto.
  • a viscoelastic seal in particular an annular rubber sleeve, is arranged (not shown in detail here) at least to seal the motor housing 30 and the dust box 28.
  • This is preferably designed to fix, in particular to latch, a disposable filter medium 40 and/or a filter holder carrying the disposable filter medium 40 in an airtight manner on the motor housing 30 .
  • This disposable filter medium 40 serves to allow airflow from the motor housing 30 into the dust box 28 ("permeable to airflow"), but in the opposite direction, ie backflowing, airflow to prevent. In this way, it is ensured that dust 42 that is already in the dust box 28 can no longer get back into the motor housing 30 .
  • the dust box 28 is designed in such a way that one side of the dust box 28 is realized as part of the surface 44 of the grinding block body 18 . In this way, the dust box 28 can be accommodated at least in sections in the grip area 20 of the sanding block 10 . Furthermore, the dust box 28 is both detachably fixed to the motor housing 30 and the grinding block 10 can be removed from the outside.
  • a spring-loaded actuating element 46 is preferably arranged in the area between the operating element 36 and the dust box 28, preferably also on a side of the sanding block 10 facing the user, which can be actuated to release the dust box 28 fixed to the motor housing 30.
  • the dust box 28 If the dust box 28 is filled with dust 42, it can be removed from the sanding block body 18, emptied and then reinserted in a particularly simple manner.
  • openings are formed which also serve as air passage openings 38 and which are preferably at least partially covered by a particularly fine filter medium 48 .
  • a filter holder carrying the filter medium 48 (not shown in detail here) can be fixed in an airtight manner inside the dust box 28, in particular latched.
  • an air passage opening 38 is formed on the motor housing 30, to which the dust box 28 is detachably attached, the dust box 28 having at least one further air passage opening 38 on which a particularly fine filter medium 48 can be or is arranged.
  • a deflection device 50 is arranged in motor housing 30 facing air passage opening 38 , deflection device 50 preferably being aligned at an angle to the axis of rotation of fan wheel 32 .
  • an air guiding element 52 is formed on the motor housing 30, which is used to direct an air flow (arrows in figure 2 ) is provided by the base plate 12 in the direction of the area of the fan wheel 32 close to the axis of rotation. In particular, an air flow in this direction is initiated due to the rotational movement of the fan wheel 32 (suction effect of the fan wheel 32).
  • the base plate 12 of the sanding block 10 has in figure 2 shown section of the embodiment 8 visible, ie shown, openings 54 for sucking off grinding dust.
  • the openings 54 in the base plate 12 are connected to the motor housing 30 via a duct system 56 in the interior of the base plate 12, which also represents an air guide element 52, and via the air guide element 52.
  • the air guiding element 52 is provided for sucking off grinding dust, which is connected in particular to the openings 54 and to the battery-operated device 22 for sucking off grinding dust.
  • figure 2 also shows a system comprising at least one sanding block 10 and at least one abrasive article 14 connected to the base plate 12 of the sanding block 10, the base plate 12 and the abrasive article 14 each having at least one opening 54, preferably each having a plurality of openings 54, for Have suction of grinding dust.
  • the plurality of openings 54 in the base plate 12 and the plurality of openings 54 of the abrasive article 14 are substantially congruent (overlap one another so that air passage is possible) in a state in which the abrasive article 14 is connected to the base plate 12 of the grinding block 10 ).
  • a vacuum cleaner nozzle 58 for sucking off sanding dust is arranged on the outside of the sanding block 10, in particular on the outside of the base plate 12.
  • no openings 54 are required in the abrasive article 14 and in the backing plate 12 to achieve the suction effect.
  • an air flow (arrows) is generated through the openings 54 or through the vacuum cleaner nozzle 58 along the air guiding element 52 into the motor housing 30, which carries along the dust 42 occurring on the workpiece surface into the dust box 28.
  • the air flow enters the dust box 28 via the deflection device 50 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (11)

  1. Bloc de ponçage (10) destiné à être utilisé manuellement, notamment pour le ponçage manuel de surfaces, comprenant au moins une plaque de base (12) pour maintenir un article de ponçage (14) ainsi qu'au moins un corps de bloc de ponçage (18) avec une zone de préhension (20), caractérisé en ce qu'un dispositif alimenté par batterie (22) pour aspirer la poussière de ponçage (42) est intégré dans le bloc de ponçage (10), qui comprend au moins une boîte à poussière (28), un boîtier de moteur (30) dans lequel est prévu un moteur d'entraînement (34) pourvu d'une roue de ventilateur (32), et une batterie (26) pour l'alimentation électrique indépendante du réseau du moteur d'entraînement (34).
  2. Bloc de ponçage (10) selon la revendication 1, caractérisé en ce que la boîte à poussière (28) peut être fixée de manière amovible au boîtier de moteur (30) et peut être retirée du bloc de ponçage (10) de l'extérieur.
  3. Bloc de ponçage (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que la batterie (26) peut être fixée de manière amovible au corps de bloc de ponçage (18) et peut être retirée du bloc de ponçage (10) de l'extérieur.
  4. Bloc de ponçage (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que la batterie (26) et/ou la boîte à poussière (28) peuvent être logées au moins par sections dans la zone de préhension (20) du bloc de ponçage (10), notamment dans une poignée du bloc de ponçage (10).
  5. Bloc de ponçage (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un élément de commande (36) pour la mise en marche et l'arrêt du moteur d'entraînement (34) est agencé sur une surface extérieure du bloc de ponçage (10).
  6. Bloc de ponçage (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une ouverture de passage d'air (38) est formée sur le boîtier de moteur (30), sur laquelle la boîte à poussière (28) est fixée de manière amovible, la boîte à poussière (28) présentant au moins une autre ouverture de passage d'air (38) sur laquelle peut être agencé un milieu filtrant (48) .
  7. Bloc de ponçage (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que la plaque de base (12) présente au moins une ouverture (54) pour aspirer la poussière de ponçage.
  8. Bloc de ponçage (10) selon la revendication 7, caractérisé en ce que le bloc de ponçage (10), notamment la plaque de base (12), présente un élément de guidage d'air (52) pour aspirer la poussière de ponçage, qui est notamment relié à l'au moins une ouverture (54) et au dispositif alimenté par batterie (22) pour aspirer la poussière de ponçage.
  9. Boc de ponçage (10) selon l'une quelconque des revendications précédentes, caractérisé par une buse d'aspiration de poussière (58) pour aspirer la poussière de ponçage, qui est agencée sur le côté extérieur du bloc de ponçage (10), la buse d'aspiration de poussière (58) étant reliée par un élément de guidage d'air (52) au dispositif alimenté par batterie (22) pour aspirer la poussière de ponçage.
  10. Système comprenant au moins un bloc de ponçage (10) selon l'une quelconque des revendications précédentes et au moins un article de ponçage (14) qui est conçu pour pouvoir être relié à la plaque de base (12) du bloc de ponçage (10), la plaque de base (12) et l'article de ponçage (14) présentant chacun au moins une ouverture (54), notamment chacun une pluralité d'ouvertures (54), pour aspirer la poussière de ponçage.
  11. Système selon la revendication 10, caractérisé en ce que l'une des ouvertures (54) de la plaque de base (12) et l'une des ouvertures (54) de l'article de ponçage (14), notamment la pluralité d'ouvertures (54) de la plaque de base (12) et la pluralité d'ouvertures (54) de l'article de ponçage (14), sont essentiellement en coïncidence dans un état dans lequel l'article de ponçage (14) est relié à la plaque de base (12) du bloc de ponçage (10) .
EP19732590.5A 2018-06-28 2019-06-18 Bloc de meulage destiné à être utilisé manuellement ainsi que système comprenant un bloc de meulage et un article abrasif Active EP3814054B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018210567.7A DE102018210567A1 (de) 2018-06-28 2018-06-28 Schleifblock zur manuellen Anwendung sowie System umfassend Schleifblock und Schleifartikel
PCT/EP2019/066041 WO2020002049A1 (fr) 2018-06-28 2019-06-18 Bloc de meulage destiné à être utilisé manuellement ainsi que système comprenant un bloc de meulage et un article abrasif

Publications (2)

Publication Number Publication Date
EP3814054A1 EP3814054A1 (fr) 2021-05-05
EP3814054B1 true EP3814054B1 (fr) 2022-08-24

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EP19732590.5A Active EP3814054B1 (fr) 2018-06-28 2019-06-18 Bloc de meulage destiné à être utilisé manuellement ainsi que système comprenant un bloc de meulage et un article abrasif

Country Status (5)

Country Link
US (1) US20210291320A1 (fr)
EP (1) EP3814054B1 (fr)
CN (1) CN112368111A (fr)
DE (1) DE102018210567A1 (fr)
WO (1) WO2020002049A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115744889A (zh) * 2022-11-30 2023-03-07 上海利物盛纳米科技有限公司 一种采用砂磨与高压气流相结合制备石墨烯粉体的方法

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE102015225365A1 (de) * 2015-12-16 2017-06-22 Robert Bosch Gmbh Staubauffangbehälter für ein Elektrowerkzeug

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DE10249140A1 (de) * 2002-10-22 2004-05-06 Robert Bosch Gmbh Staubauffangbehälter für eine Elektrohandwerkzeugmaschine
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US20210291320A1 (en) 2021-09-23
DE102018210567A1 (de) 2020-01-02
WO2020002049A1 (fr) 2020-01-02
CN112368111A (zh) 2021-02-12

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