EP1787754B1 - Housing for a grinding wheel - Google Patents
Housing for a grinding wheel Download PDFInfo
- Publication number
- EP1787754B1 EP1787754B1 EP06124227A EP06124227A EP1787754B1 EP 1787754 B1 EP1787754 B1 EP 1787754B1 EP 06124227 A EP06124227 A EP 06124227A EP 06124227 A EP06124227 A EP 06124227A EP 1787754 B1 EP1787754 B1 EP 1787754B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- wall
- brick
- grinding wheel
- housing according
- 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.)
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- 239000011449 brick Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 description 19
- 239000000428 dust Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- 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
- B24B55/04—Protective covers for the grinding wheel
-
- 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
Definitions
- the present invention relates to a brick grinding housing for a grinding wheel for grinding bricks or the like according to the preamble of claim 1.
- a grinding wheel associated with the brick grinding housing is a generally circular disk which rotates about a drive axis of a drive motor.
- grinding elements On one or both of the large side surfaces grinding elements are arranged, with which the objects to be ground are ground.
- the grinding elements are either mounted directly on the grinding wheel or are part of a slip ring, which forms a separate component and is attached to the grinding wheel.
- a brick-grinding case of this kind is in DE 102 50 272 B3 described. If necessary, the objects to be ground are conveyed past the rotating grinding wheel under pressure and ground in the desired manner by the contact with the grinding elements.
- a variable amount of dust and / or abraded particles arises depending on the type of grinding.
- These abrasive particles or the grinding dust are usually collected by the grinding wheel at least partially surrounding the grinding housing.
- a protective hood for rotating tools which works with a liquid coolant, whereby the liquid mist leakage is reduced by the guard to a minimum.
- EP 1 486 307 A2 shows a hand grinder for cutting glass, wherein the outer wall of a semicircular grinding housing in the sense of a spiral to the side divergent runs, at which the grinding wheel projects beyond the housing side in the plane of rotation.
- the object of the present invention is now to provide a brick-grinding housing of the type specified, which allows a targeted and effective removal of abrasive particles or grinding dust.
- a brick-sliding housing according to claim 1, wherein the sliding housing has a rear wall and an outer wall which define a space for receiving a grinding wheel.
- the outer wall is arranged in a circumferential direction around the space and at least partially has the shape of a spiral, the radius of which increases in the direction of an outlet opening formed in the outer wall.
- the spiral shape of the outer wall of the grinding housing makes it possible, in a simple yet effective manner, to control the grinding dust or abrasive particles produced during the grinding process effectively and together and in the desired manner. But the spiral shape has the great advantage that only a small amount, turbulence and the volume flow of air and grinding or dust particles can be dosed and discharged in the desired manner. It should be emphasized at this point that the increase in the radius of the spiral formed by the outer wall takes place in the direction of rotation of a grinding wheel inserted into the sliding housing.
- the helical configuration of the outer wall of the grinding housing has the further advantage that the air-particle mixture is parallel to the sliding surface, that is to the outer wall and therefore only a slight wear or abrasion of the material takes place on the inside of the grinding housing.
- a part of the rear wall of the grinding housing is removable and designed such that the grinding wheel can be introduced into the room. This allows easy and quick replacement of the grinding wheel after wear or when another grinding wheel is to be used.
- the outer wall is designed such that the volume flow generated during operation of a grinding wheel inserted into the space increases in the flow channel formed between the outer wall and the grinding wheel in the direction of the outlet opening.
- the outer wall is designed such that the volume flow increases in the direction of rotation of the grinding wheel used.
- the design of the corresponding parts of the rear wall and any front covers is to be dimensioned such that the volume flow increases in the flow channel formed to the outlet opening. The embodiment in this way is advantageous if a constant flow rate is to be achieved.
- the volume cross-section of the flow channel must increase in order to achieve an at least reasonably constant flow velocity.
- a Constant flow rate is advantageous because a uniform and aspirationally constant swirling discharge of the air-particle mixture is achieved. Furthermore, it is ensured by the volume flow increasing towards the outlet opening that all abrasive particles emerging from the grinding wheel can be transported away and entrained. It should be noted at this point that also an embodiment of the flow channel can be made such that the flow rate increases or decreases, although the total flow increases towards the outlet opening.
- the outlet opening of the grinding housing in the operating position of the grinding housing is directed downward and thereby the air-particle mixture is discharged down using gravity.
- one or more additional covers are provided on the opposite side of the rear wall of the grinding housing.
- the covers may cover the upper portion of the grinding wheel on the opposite side of the rear wall. This further reduces the escape of particles or sanding dust.
- air supply openings are provided in these covers in the central area.
- the outer wall has sealing elements which project beyond the grinding plane formed by the grinding wheel used.
- the sealing elements may be formed for example by rubber elements, brush elements or any other suitable seal.
- the outlet opening lies substantially in the region in which an inserted grinding wheel grinds the bricks to be ground or the like.
- FIG. 1 is a schematic side view of a brick grinding housing 1 according to the invention for a grinding wheel for grinding bricks or the like shown.
- the combination of the grinding housing 1 with a grinding wheel 14 is in the Figures 3 and 4 to see.
- FIG. 2 shows the sliding housing 1 of FIG. 1 in a schematic perspective view.
- the sliding housing 1 comprises an outer wall 2 and a rear wall, which consists of a plurality of elements, namely an outer part 5 and an inner part 6, wherein the inner part 6 closes an opening 7, through which the grinding wheel 14 can be introduced into the sliding housing.
- the outer wall 2 comprises an inner side 3, which faces the space in which the grinding wheel 14 is used.
- the inner side 3 extends from an initial region 9 on the underside of the grinding housing 1 in the form of a spiral around the space for receiving the grinding wheel 14 to an end region 10. Between the end region 10 and the starting region 9, an outlet opening 8 is formed.
- the end portion 11 of the inner side 3 to the end portion 10 is formed substantially linearly, wherein the other part of the inner side 3 between the initial portion 9 and the beginning of the rear portion 11 has the shape of a spiral.
- the radius of the spiral increases steadily from the starting region 9 to the beginning of the rear region 11, that is to say the radius r 1 of the inner side 3 in the starting region 9 is smaller than the radius r 4 at the beginning of the rear region 11.
- r 1 ⁇ r 2 ⁇ r 3 ⁇ r 4 .
- the center A of the opening 7 in the grinding wheel back wall corresponds to the axis of rotation of the grinding wheel 14, which is formed by a corresponding shaft of a motor 22, which in FIG. 4 is shown.
- the opening 7 here is circular about the center A corresponding to the circular shape of the
- the radius of the grinding wheel 14 is slightly smaller than the radius of the opening 7, so that the grinding wheel 14 can be introduced from behind through the rear wall into the grinding housing 1.
- the Jardintei 1 5 of the rear wall together with the inside 3 of the outer wall 2 a flow channel through which the air-particle mixture generated by the grinding wheel 14 during grinding is transported in the direction of rotation 19 of the grinding wheel 14 to the outlet opening 8 therethrough.
- the initially arranged in the circumferential direction of the spiral edge of the outlet opening 8 is formed by the tangenital extending portion 1 of the peripheral wall 2.
- the inner side 3 and the rear wall 5 are configured such that the volume flow in the flow channel steadily increases during operation of the grinding wheel 14 from the starting region 9 to the outlet opening 8 in order to ensure that the particles and dust elements produced during grinding are completely captured by the volume flow and transported away can be.
- the flow channel is advantageously designed so that the mean flow velocity of the air-particle mixture is substantially constant.
- the average flow rate may also decrease or increase.
- the inside 3 and the rear wall 5 give the flow channel a substantially rectangular shape in cross-section, which is simpler and cheaper in terms of manufacturing technology. However, it is also conceivable to design the inside 3 at least partially arched, resulting in an even improved flow behavior in the flow channel.
- additional covers may be arranged on the opposite side of the rear wall 6 in the middle and upper area of the sliding housing 1. These additional covers prevent air and in particular abrasive particles or sanding dust from escaping to the outside and support the flow in the flow channel.
- the middle of the covers approximately in the region of the drive axis A of the electric motor and the axis of rotation of the grinding wheel 14 openings may be provided, can enter through the air into the grinding housing 1.
- the covers close laterally the Schleifg housing 1 in the area in which the bricks to be ground 20 are not moved past.
- the sliding housing 1 has on its underside base elements 12, with which the sliding housing on a base 13, such as a floor or a corresponding base plate, can be attached.
- the bricks 20 to be ground or any other objects that can be ground by means of the grinding housing according to the invention and a grinding wheel 14 inserted therein are preferably transported past the grinding wheel 14 in a lower region, as in FIG Figures 3 and 4 can be seen.
- the outer wall 2 of the grinding housing 1 has sealing elements 4, on which the bricks 20 to be ground are transported past the grinding wheel 14.
- the sealing elements 4 protrude from the grinding plane formed by the grinding elements 15 of the grinding wheel 14, so that the bricks 20 to be ground touch the sealing elements 4 or are pressed against these before they are abraded by the grinding elements 15.
- the sealing elements can be arranged either outside of the inner side 3 of the outer wall 2, so to speak around them, as it were in the FIGS. 1 and 2 is shown. Alternatively, however, the sealing elements 4 can also be integrated into the inner side 3, as shown in FIGS Figures 3 and 4 is shown. As in the Figures 3 and 4 can be seen, the sealing elements 4 may be provided only in the areas in which the brick to be transported 20 are transported past the grinding wheel 14.
- the sealing elements 4 may for example consist of brushes, rubber lips or any other suitable types of seals.
- the base elements 12 may also on at least one side of the Schleifg epuruses 1, z. B. on top of each other, be arranged.
- the grinding wheel 14 and the bricks 20 to be ground, which are conveyed past the grinding wheel 14, are arranged at an acute angle to each other so that the bricks 20 to be ground are contacted and ground only in the area of the grinding elements 15 of the grinding wheel 14 first hit the grinding wheel 14 the bricks 20 to be ground.
- This is the area which is arranged above the outlet opening 8 of the grinding housing 1. A large part of the abraded material from the bricks 20 thus falls directly down into the outlet opening 8.
- the starting region 9 of the inner side 3 of the outer wall is therefore arranged in the transport direction 21 of the brick to be ground 20 behind the last grinding point.
- grinding wheel 14 has in addition to the grinding elements and so-called pumping elements 16 which are configured arranged so that by the rotation of the grinding wheel 14, a pumping action of air is generated from the inside out.
- the thus pumped air entrains abrasive particles and grinding dust from the inside of the grinding wheel 14 out to the flow channel and ensures efficient removal of the air-particle mixture through the flow channel to the outlet opening 8.
- any and all types of grinding wheels 14 with the inventive sliding housing 1 can be used.
- a motor 22 is arranged, which is connected via a connecting plate 18 with the grinding wheel 14.
- the motor is so axially displaceable, for example, by the illustrated rails 23 that the grinding wheel 14 can be removed to the rear through the opening 7 from the sliding housing 1 and optionally repaired or replaced.
- the outlet opening 8 is arranged in the lower region of the Schleifg ekoruses 1 and directed downward. But it can also be arranged at a different location of the housing 1 and directed in a different direction.
- the outlet opening 8 extends in the circumferential direction of the Schleifg ekoruses 1 to the starting area 9. It is preferably arranged in a the starting region 9 in the direction of rotation of the grinding wheel 14 upstream quadrant of Schleifg ephases 1 and its outer wall 3 or peripheral wall.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Ziegel-Schleifgehäuse für ein Schleifrad zum Schleifen von Ziegeln oder dergleichen gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a brick grinding housing for a grinding wheel for grinding bricks or the like according to the preamble of
Ein dem Ziegel-Schleifgehäuse zugehöriges Schleifrad ist eine in der Regel runde Scheibe, die sich um eine Antriebsachse eines Antriebsmotors dreht. An einer oder an beiden der großen Seitenflächen sind Schleifelemente angeordnet, mit denen die zu schleifenden Gegenstände geschliffen werden. Die Schleifelemente sind entweder direkt am Schleifrad angebracht oder sind Teil eines Schleifringes, der ein separates Bauteil bildet und am Schleifrad befestigt wird.A grinding wheel associated with the brick grinding housing is a generally circular disk which rotates about a drive axis of a drive motor. On one or both of the large side surfaces grinding elements are arranged, with which the objects to be ground are ground. The grinding elements are either mounted directly on the grinding wheel or are part of a slip ring, which forms a separate component and is attached to the grinding wheel.
Ein Ziegel-Schleifgehäuse dieser Art ist in
Während des Schleifvorganges entsteht eine abhängig von der Art des Schleifens variierende Menge an Staub und/oder abgeschliffenen Partikeln. Diese Schleifpartikel bzw. der Schleifstaub werden in der Regel durch das das Schleifrad zumindest teilweise umgebendes Schleifgehäuse aufgefangen.During the grinding process, a variable amount of dust and / or abraded particles arises depending on the type of grinding. These abrasive particles or the grinding dust are usually collected by the grinding wheel at least partially surrounding the grinding housing.
In der
Die Aufgabe der vorliegenden Erfindung ist nun, ein Ziegel-Schleifgehäuse der eingangs angegebenen Art bereitzustellen, welches einen gezielten und effektiven Abtransport von Schleifpartikeln bzw. Schleifstaub ermöglicht.The object of the present invention is now to provide a brick-grinding housing of the type specified, which allows a targeted and effective removal of abrasive particles or grinding dust.
Die obige Aufgabe wird gelöst durch ein Ziegel-Schleifgehäuse gemäß dem Anspruch 1, wobei das Schleifgehäuse eine Rückwand und eine Außenwand aufweist, welche einen Raum zum Aufnehmen eines Schleifrades begrenzen. Die Außenwand ist in einer Umfangsrichtung um den Raum angeordnet und hat zumindest teilweise die Form einer Spirale, deren Radius in Richtung zu einer in der Außenwand gebildeten Austrittsöffnung zunimmt.The above object is achieved by a brick-sliding housing according to
Die Spiralform der Außenwand des Schleifgehäuses ermöglicht es, in einfacher aber dennoch effektiver Weise den während des Schleifvorganges erzeugten Schleifstaub bzw. die Schleifpartikel kontrolliert und effektiv zusammen und in gewünschter Weise abzuführen. Die Spiralform hat aber den großen Vorteil, dass nur in geringem Maß, Verwirbelungen entstehen und der Volumenstrom aus Luft und Schleif- bzw. Staubpartikeln in gewünschter Weise dosiert und abgeleitet werden kann. Es ist an dieser Stelle hervorzuheben, dass die Zunahme des Radius der von der Außenwand gebildeten Spirale in der Drehrichtung eines in das Schleifgehäuse eingesetzten Schleifrades erfolgt.The spiral shape of the outer wall of the grinding housing makes it possible, in a simple yet effective manner, to control the grinding dust or abrasive particles produced during the grinding process effectively and together and in the desired manner. But the spiral shape has the great advantage that only a small amount, turbulence and the volume flow of air and grinding or dust particles can be dosed and discharged in the desired manner. It should be emphasized at this point that the increase in the radius of the spiral formed by the outer wall takes place in the direction of rotation of a grinding wheel inserted into the sliding housing.
Die spiralförmige Ausgestaltung der Außenwand des Schleifgehäuses hat weiter den Vorteil, dass das Luft-Partikelgemisch parallel zur Schleifgehäuseoberfläche, das heißt zur Außenwand verläuft und daher nur eine geringe Abnutzung oder Abscheuerung des Materiales an der Innenseite des Schleifgehäuses erfolgt.The helical configuration of the outer wall of the grinding housing has the further advantage that the air-particle mixture is parallel to the sliding surface, that is to the outer wall and therefore only a slight wear or abrasion of the material takes place on the inside of the grinding housing.
Vorteilhafterweise ist ein Teil der Rückwand des Schleifgehäuses abnehmbar und derart ausgestaltet, dass das Schleifrad in den Raum eingebracht werden kann. Dies ermöglicht ein einfaches und rasches Auswechseln des Schleifrades nach Abnutzung oder wenn ein anderes Schleifrad zur Verwendung kommen soll.Advantageously, a part of the rear wall of the grinding housing is removable and designed such that the grinding wheel can be introduced into the room. This allows easy and quick replacement of the grinding wheel after wear or when another grinding wheel is to be used.
Vorteilhafterweise ist die Außenwand derart ausgestaltet, dass der bei Betrieb eines in den Raum eingesetzten Schleifrades erzeugte Volumenstrom in dem zwischen der Außenwand und dem Schleifrad gebildeten Strömungskanal in Richtung zur Austrittsöffnung zunimmt. In anderen Worten ist die Außenwand derart ausgestaltet, dass der Volumenstrom in der Drehrichtung des eingesetzten Schleifrades zunimmt. Um genau zu sein, ist neben der Ausgestaltung der Außenwand auch die Ausgestaltung der entsprechenden Teile der Rückwand sowie etwaiger vorderer Abdeckungen derart zu bemessen, dass der Volumenstrom im gebildeten Strömungskanal zur Austrittsöffnung zunimmt. Die Ausgestaltung in dieser Weise ist von Vorteil, wenn eine gleichbleibende Strömungsgeschwindigkeit erzielt werden soll. Da nämlich die durch die Drehung des Schleifrades mitgeförderte Luft sowie die Schleif- bzw. Staubpartikel mengenmäßig zur Austrittsöffnung zunehmen, muss der Volumenquerschnitt des Strömungskanales zunehmen, um eine zumindest einigermaßen gleichbleibende Strömungsgeschwindigkeit zu erreichen. Eine gleichbleibende Strömungsgeschwindigkeit ist vorteilhaft, da eine gleichmäßige und angestrebtermaßen drallkonstante Abführung des Luft-Partikelgemisches erreicht wird. Weiterhin wird durch den zur Austrittsöffnung hin zunehmenden Volumenstrom gewährleistet, dass alle aus dem Schleifrad austretenden Schleifpartikel abtransportiert und mitgerissen werden können. Es ist an dieser Stelle darauf hinzuweisen, dass auch eine Ausgestaltung des Strömungskanales derart erfolgen kann, dass die Strömungsgeschwindigkeit zunimmt oder abnimmt, obwohl der Volumenstrom insgesamt zur Austrittsöffnung hin zunimmt.Advantageously, the outer wall is designed such that the volume flow generated during operation of a grinding wheel inserted into the space increases in the flow channel formed between the outer wall and the grinding wheel in the direction of the outlet opening. In other words, the outer wall is designed such that the volume flow increases in the direction of rotation of the grinding wheel used. To be precise, in addition to the design of the outer wall, the design of the corresponding parts of the rear wall and any front covers is to be dimensioned such that the volume flow increases in the flow channel formed to the outlet opening. The embodiment in this way is advantageous if a constant flow rate is to be achieved. Since the air conveyed along by the rotation of the grinding wheel and the grinding or dust particles increase in quantity relative to the outlet opening, the volume cross-section of the flow channel must increase in order to achieve an at least reasonably constant flow velocity. A Constant flow rate is advantageous because a uniform and aspirationally constant swirling discharge of the air-particle mixture is achieved. Furthermore, it is ensured by the volume flow increasing towards the outlet opening that all abrasive particles emerging from the grinding wheel can be transported away and entrained. It should be noted at this point that also an embodiment of the flow channel can be made such that the flow rate increases or decreases, although the total flow increases towards the outlet opening.
Vorteilhafterweise ist die Austrittsöffnung des Schleifgehäuses in Betriebsstellung des Schleifgehäuses nach unten gerichtet und hierdurch wird das Luft-Partikelgemisch nach unten unter Mithilfe der Schwerkraft abgeführt.Advantageously, the outlet opening of the grinding housing in the operating position of the grinding housing is directed downward and thereby the air-particle mixture is discharged down using gravity.
Weiterhin ist es von Vorteil, wenn auf der der Rückwand des Schleifgehäuses gegenüberliegenden Seite eine oder mehrere zusätzliche Abdeckungen vorgesehen sind. Da üblicherweise im unteren Teil geschliffen wird, können die Abdeckungen beispielsweise den oberen Bereich des Schleifrades auf der der Rückwand gegenüberliegenden Seite abdecken. Hierdurch wird das Austreten von Partikeln oder Schleifstaub weiter reduziert. Gleichzeitig kann es hierbei von Vorteil sein, wenn im mittleren Bereich Luftzufuhröffnungen in diesen Abdeckungen vorgesehen sind.Furthermore, it is advantageous if one or more additional covers are provided on the opposite side of the rear wall of the grinding housing. For example, since grinding is usually performed in the lower part, the covers may cover the upper portion of the grinding wheel on the opposite side of the rear wall. This further reduces the escape of particles or sanding dust. At the same time, it may be advantageous in this case if air supply openings are provided in these covers in the central area.
Vorteilhafterweise weist die Außenwand in den Bereichen, in welchen zu schleifende Ziegel oder dergleichen an einem eingesetzten Schleifrad vorbeitransportiert werden, Dichtelemente auf, welche über die von dem eingesetzten Schleifrad gebildete Schleifebene hinausragen. Hierdurch wird in dem Bereich, in dem die zu schleifenden Gegenstände auf das Schleifrad treffen, vermieden, dass Schleifpartikel oder Schleifstaub nach außen austreten kann. Die Dichtelemente können beispielsweise durch Gummielemente, Bürstenelemente oder jede andere geeignete Dichtung gebildet sein.Advantageously, in the regions in which the bricks or the like to be ground are transported past an inserted grinding wheel, the outer wall has sealing elements which project beyond the grinding plane formed by the grinding wheel used. As a result, in the area in which the objects to be ground meet the grinding wheel, it is avoided that abrasive particles or grinding dust can escape to the outside. The sealing elements may be formed for example by rubber elements, brush elements or any other suitable seal.
Vorteilhafterweise liegt die Austrittsöffnung im wesentlichen in dem Bereich, in welchem ein eingesetztes Schleifrad die zu schleifenden Ziegel oder dergleichen schleift.Advantageously, the outlet opening lies substantially in the region in which an inserted grinding wheel grinds the bricks to be ground or the like.
Die vorliegende Erfindung wird in der folgenden detaillierten Beschreibung eines Ausführungsbeispieles in Bezug auf die beigefügten Figuren näher erläutert, in denen
Figur 1- eine schematische Seitenansicht eines erfindungsgemäßen Ziegel-Schleifgehäuses,
Figur 2- eine schematische Perspektivansicht des Schleifgehäuses von
,Figur 1 Figur 3- eine schematische Perspektivansicht eines erfindungsgemäßen Schleifgehäuses mit Schleifrad und zu schleifenden Gegenständen, und
Figur 4- eine schematische Perspektivansicht der Rückseite des Schleifgehäuses und des Schleifrades von
Figur 3
- FIG. 1
- a schematic side view of an inventive Brick grinding housing,
- FIG. 2
- a schematic perspective view of the sliding housing of
FIG. 1 . - FIG. 3
- a schematic perspective view of a grinding housing according to the invention with grinding wheel and objects to be ground, and
- FIG. 4
- a schematic perspective view of the back of the grinding housing and the grinding wheel of
FIG. 3
In
Das Schleifgehäuse 1 umfasst eine Außenwand 2 und eine Rückwand, welche aus mehreren Elementen besteht, nämlich einem Außenteil 5 und einem Innenteil 6, wobei das Innenteil 6 eine Öffnung 7 verschließt, durch die das Schleifrad 14 in das Schleifgehäuse eingebracht werden kann. Die Außenwand 2 umfasst eine Innenseite 3, welche dem Raum zugewandt ist, in welchem das Schleifrad 14 eingesetzt wird. Die Innenseite 3 erstreckt sich von einem Anfangsbereich 9 auf der Unterseite des Schleifgehäuses 1 in Form einer Spirale um den Raum zur Aufnahme des Schleifrades 14 herum bis zu einem Endbereich 10. Zwischen dem Endbereich 10 und dem Anfangsbereich 9 ist eine Austrittsöffnung 8 gebildet. Der Schlussbereich 11 der Innenseite 3 bis zum Endbereich 10 ist im wesentlichen linear ausgebildet, wobei der andere Teil der Innenseite 3 zwischen dem Anfangsbereich 9 und dem Beginn des hinteren Bereiches 11 die Form einer Spirale aufweist. Der Radius der Spirale nimmt vom Anfangsbereich 9 bis zum Beginn des hinteren Bereiches 11 stetig zu, das heißt der Radius r1 der Innenseite 3 im Anfangsbereich 9 ist kleiner als der Radius r4 zu Beginn des hinteren Bereiches 11. Insgesamt gilt r1< r2< r3< r4. Der Mittelpunkt A der Öffnung 7 in der Schleifgehäuserückwand entspricht der Drehachse des Schleifrades 14, die durch eine entsprechende Welle eines Motors 22 gebildet ist, welche in
Der in der Umfangsrichtung der Spirale zunächst angeordnete Rand der Austrittsöffnung 8 ist durch den sich tangenital erstreckenden Abschnitt 1 der Umfangswand 2 gebildet.The initially arranged in the circumferential direction of the spiral edge of the
Die Rückwand, beim Ausführungsbeispiel deren Außenteil 5 oder auch deren Innenteil 6, begrenzt im Gehäuse 1 axial einen radial frei durchgehenden Raum zur Aufnahme des Schleifrades 14.The rear wall, in the embodiment of the
Die Innenseite 3 und die Rückwand 5 sind derart ausgestaltet, dass der Volumenstrom im Strömungskanal während des Betriebes des Schleifrades 14 vom Anfangsbereich 9 bis zur Austrittsöffnung 8 stetig zunimmt, um zu gewährleisten, dass die beim Schleifen erzeugten Partikel und Staubelemente vollständig vom Volumenstrom erfasst und abtransportiert werden können. Hierbei ist der Strömungskanal vorteilhafterweise so ausgestaltet, dass die mittlere Strömungsgeschwindigkeit des Luft-Partikelgemisches im wesentlichen konstant ist. Abhängig von der Anwendung kann die mittlere Strömungsgeschwindigkeit jedoch auch abnehmen oder auch zunehmen. Es ist an dieser Stelle hervorzuheben, dass die speziellen geometrischen Abmessungen der Innenseite 3, der Rückwand 5 und der anderen an der Bildung des Strömungskanales beteiligten Elemente von dem Schleifrad 14, den zu schleifenden Gegenständen, der Art des Schleifens, der Drehgeschwindigkeit des Schleifrades 14 und einigen weiteren Faktoren abhängt, deren Einflussnahme und die schlussendliche Berechnung der spezifischen geometrischen Eigenschaften dem Fachmann jedoch keine Schwierigkeiten bereiten.The
Es ist zu beachten, dass im gezeigten Ausführungsbeispiel die Innenseite 3 und die Rückwand 5 dem Strömungskanal eine im Querschnitt gesehen im wesentlichen rechteckige Form geben, was fertigungstechnisch einfacher und günstiger ist. Es ist jedoch auch denkbar, die Innenseite 3 zumindest teilweise gewölbt auszugestalten, wodurch sich ein noch verbessertes Strömungsverhalten im Strömungskanal ergibt.It should be noted that in the exemplary embodiment shown, the
Auf der Vorderseite des Schleifgehäuses 1, das heißt auf derjenigen Seite, auf der die zu schleifenden Gegenstände 20 geschliffen werden, können im mittleren und oben Bereich des Schleifgehäuses 1 zusätzliche Abdeckungen (nicht dargestellt) auf der gegenüberliegenden Seite der Rückwand 6 angeordnet sein. Diese zusätzlichen Abdeckungen verhindern, dass Luft und insbesondere Schleifpartikel oder Schleifstaub nach außen austreten und unterstützen die Strömung im Strömungskanal. In der Mitte der Abdeckungen etwa im Bereich der Antriebsachse A des Elektromotors und der Drehachse des Schleifrads 14 können Öffnungen vorgesehen sein, durch die Luft in das Schleifgehäuse 1 eintreten kann.On the front of the grinding
Die Abdeckungen schließen seitlich das Schleifg ehäuse 1 in dem Bereich, in dem die zu schleifenden Ziegel 20 nicht vorbeibewegt werden.The covers close laterally the
Das Schleifgehäuse 1 weist an seiner Unterseite Sockelelemente 12 auf, mit denen das Schleifgehäuse auf einer Basis 13, wie zum Beispiel einem Fußboden oder einer entsprechenden Basisplatte, befestigt werden kann. Die zu schleifenden Ziegel 20 oder jegliche andere Gegenstände, die mittels des erfindungsgemäßen Schleifgehäuses und eines in diesem eingesetzten Schleifrades 14 geschliffen werden können, werden vorzugsweise in einem unteren Bereich am Schleifrad 14 vorbeitransportiert, wie in
Die Sockelelemente 12 können auch an wenigstens einer Seite des Schleifg ehäuses 1, z. B. übereinander, angeordnet sein.The
Das Schleifrad 14 und die zu schleifenden Ziegel 20, welche am Schleifrad 14 vorbeitransportiert werden, sind in einem spitzen Winkel zueinander angeordnet, so dass die zu schleifenden Ziegel 20 nur in dem Bereich von den Schleifelementen 15 des Schleifrades 14 kontaktiert und abgeschliffen werden, in dem die zu schleifenden Ziegel 20 zuerst auf das Schleifrad 14 treffen. Dies ist derjenige Bereich, der oberhalb der Austrittsöffnung 8 des Schleifgehäuses 1 angeordnet ist. Ein Großteil des abgeschliffenen Materiales von den Ziegeln 20 fällt somit direkt nach unten in die Austrittsöffnung 8. Der Anfangsbereich 9 der Innenseite 3 der Außenwand ist daher in Transportrichtung 21 der zu schleifenden Ziegel 20 gesehen hinter dem letzten Schleifpunkt angeordnet.The grinding
Das in
In der schematischen Perspektivansicht von
Beim Ausführungsbeispiel ist die Austrittsöffnung 8 im unteren Bereich des Schleifg ehäuses 1 angeordnet und nach unten gerichtet. Sie kann aber auch an einer anderen Stelle des Gehäuses 1 angeordnet sein und in eine andere Richtung gerichtet sein. Die Austrittsöffnung 8 erstreckt sich in der Umfangsrichtung des Schleifg ehäuses 1 bis zum Anfangsbereich 9. Sie ist vorzugsweise in einem dem Anfangsbereich 9 in der Drehrichtung des Schleifrades 14 vorgeordneten Quadranten des Schleifg ehäuses 1 bzw. dessen Außenwand 3 bzw. Umfangswand angeordnet.In the embodiment, the
Claims (12)
- Brick-grinding housing (1) for a grinding wheel (14) for the grinding of bricks (20), with a rear wall (5, 6) and with an outer wall (2) which delimit a space for receiving a grinding wheel (14), the outer wall (2) being arranged around the space in a circumferential direction, characterized in that the outer wall (2) is in the form of a spiral, the radius of which increases in the direction of an outlet orifice (8) which is formed in the outer wall (2) and is formed between the initial region (9) and the end region of the spiral.
- Brick-grinding housing according to Claim 1, part (6) of the rear wall (5, 6) being removable and being designed in such a way that the grinding wheel (14) can be introduced into the space.
- Brick-grinding housing according to Claim 1 or 2, the outer wall (2) being designed in such a way that the volume flow, generated during the operation of a grinding wheel inserted into the space, in the flow duct formed between the outer wall and the grinding wheel increases in the direction of the outlet orifice.
- Brick-grinding housing according to Claim 3, the outer wall (2) being designed in such a way that the average flow velocity remains essentially the same.
- Brick-grinding housing according to one of Claims 1 to 4, the outlet orifice (8) being directed downwards in the operating position of the grinding housing (1).
- Brick-grinding housing according to one of Claims 1 to 5, a cover being provided on the side lying opposite the rear wall (5, 6).
- Brick-grinding housing according to one of Claims 1 to 6, the outer wall (2) having, in the regions in which bricks (20) or the like to be ground are transported past on an inserted grinding wheel (14), sealing elements (4) which project beyond the grinding plane formed by the inserted grinding wheel (14).
- Brick-grinding housing according to one of Claims 1 to 7, the outlet orifice (8) lying in the region in which an inserted grinding wheel (14) grinds bricks (20) or the like to be ground.
- Brick-grinding housing according to one of the preceding claims, an initial region (9) of the outer wall (2) delimiting the outlet orifice (8) in the circumferential direction, the initial region (9) being arranged preferably vertically below the mid-axis (A) of the grinding housing (1).
- Brick-grinding housing according to Claim 9, the outlet orifice (8) being located in a quadrant of the grinding housing (1), the said quadrant preceding the initial region (9).
- Brick-grinding housing according to one of the preceding claims, the orifice margin, arranged near the spiral in the circumferential direction, of the outlet orifice (8) being formed by a tangentially extending portion (11) of the outer wall (2).
- Brick-grinding housing according to one of the preceding claims, the outlet orifice (8) extending axially over the entire axial width of the outer wall (2).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005054935A DE102005054935B4 (en) | 2005-11-17 | 2005-11-17 | Housing for a grinding wheel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1787754A1 EP1787754A1 (en) | 2007-05-23 |
EP1787754B1 true EP1787754B1 (en) | 2008-10-15 |
Family
ID=37764000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06124227A Active EP1787754B1 (en) | 2005-11-17 | 2006-11-16 | Housing for a grinding wheel |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1787754B1 (en) |
AT (1) | ATE411137T1 (en) |
DE (2) | DE102005054935B4 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE90107C (en) * | ||||
GB533964A (en) * | 1939-08-23 | 1941-02-25 | George Crawford Tyce | Improvements in or relating to portable abrading machines |
GB715760A (en) * | 1951-08-21 | 1954-09-22 | John Robert Billau | Improvements in and relating to suction hoods for grinding discs and the like |
DD134928A1 (en) | 1978-03-15 | 1979-04-04 | Manfred Koerner | MIRROR ARMS COVER FOR ROTATING TOOLS |
DE10250272B3 (en) * | 2002-10-28 | 2004-04-15 | Novoceric Transportanlagen Gmbh | Appliance for machining building blocks, especially bricks, has machining tools, with vertically staggered gap adjustment between top and bottom edges. |
DE10305033A1 (en) * | 2002-11-22 | 2004-06-03 | Robert Bosch Gmbh | Electric hand tool |
JP2005001896A (en) | 2003-06-09 | 2005-01-06 | Fuji Heavy Ind Ltd | Glass cutting device |
-
2005
- 2005-11-17 DE DE102005054935A patent/DE102005054935B4/en not_active Expired - Fee Related
-
2006
- 2006-11-16 AT AT06124227T patent/ATE411137T1/en not_active IP Right Cessation
- 2006-11-16 DE DE502006001817T patent/DE502006001817D1/en active Active
- 2006-11-16 EP EP06124227A patent/EP1787754B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE502006001817D1 (en) | 2008-11-27 |
ATE411137T1 (en) | 2008-10-15 |
DE102005054935B4 (en) | 2008-10-16 |
DE102005054935A1 (en) | 2007-05-31 |
EP1787754A1 (en) | 2007-05-23 |
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