EP1787754B1 - Couverture pour une meule abrasive - Google Patents

Couverture pour une meule abrasive Download PDF

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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.)
Active
Application number
EP06124227A
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German (de)
English (en)
Other versions
EP1787754A1 (fr
Inventor
Peter Prof. Dr.-Ing. Schiebener
Franz Steidle
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.)
Hans Lingl Anlagenbau und Verfahrenstechnik GmbH and Co KG
Original Assignee
Hans Lingl Anlagenbau und Verfahrenstechnik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hans Lingl Anlagenbau und Verfahrenstechnik GmbH and Co KG filed Critical Hans Lingl Anlagenbau und Verfahrenstechnik GmbH and Co KG
Publication of EP1787754A1 publication Critical patent/EP1787754A1/fr
Application granted granted Critical
Publication of EP1787754B1 publication Critical patent/EP1787754B1/fr
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Anticipated expiration legal-status Critical

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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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (12)

  1. Boîtier de meulage de brique (1) pour une meule (14) destinée à meuler des briques (20), comprenant une paroi arrière (5, 6) et une paroi extérieure (2), lesquelles délimitent un espace destiné à recevoir une meule (14), la paroi extérieure (2) étant disposée dans une direction circonférentielle autour de l'espace,
    caractérisé en ce que
    la paroi extérieure (2) présente la forme d'une spirale, dont le rayon augmente en direction d'une ouverture de sortie (8) formée dans la paroi extérieure (2), laquelle ouverture est formée entre la zone de départ (9) et la zone finale de la spirale.
  2. Boîtier de meulage de brique selon la revendication 1, dans lequel une partie (6) de la paroi arrière (5, 6) est réalisée de façon amovible et de telle sorte que la meule (14) peut être introduite dans l'espace.
  3. Boîtier de meulage de brique selon la revendication 1 ou 2, dans lequel la paroi extérieure (2) est réalisée de telle sorte que le courant de volume produit au cours du fonctionnement d'une meule insérée dans l'espace augmente dans le canal d'écoulement formé entre la paroi extérieure et la meule en direction de l'ouverture de sortie.
  4. Boîtier de meulage de brique selon la revendication 3, dans lequel la paroi extérieure (2) est réalisée de telle sorte que la vitesse d'écoulement moyenne reste sensiblement identique.
  5. Boîtier de meulage de brique selon l'une quelconque des revendications 1 à 4, dans lequel l'ouverture de sortie (8) dans la position de fonctionnement du boîtier de meulage (1) est orientée vers le bas.
  6. Boîtier de meulage de brique selon l'une quelconque des revendications 1 à 5, dans lequel une couverture est prévue sur la face opposée à la paroi arrière (5, 6).
  7. Boîtier de meulage de brique selon l'une quelconque des revendications 1 à 6, dans lequel la paroi extérieure (2) comprend, dans les zones dans lesquelles des briques (20) ou similaires à meuler sont transportées en passant devant une meule (14) insérée, des éléments d'étanchéité (4), lesquels dépassent du plan de meulage formé par la meule (14) utilisée.
  8. Boîtier de meulage de brique selon l'une quelconque des revendications 1 à 7, dans lequel l'ouverture de sortie (8) se situe dans la zone dans laquelle une meule (14) utilisée meule les briques (20) ou similaires à meuler.
  9. Boîtier de meulage de brique selon l'une quelconque des revendications précédentes, dans lequel
    une zone de départ (9) de la paroi extérieure (2) délimite l'ouverture de sortie (8) dans la direction circonférentielle,
    la zone de départ (9) étant disposée de préférence verticalement sous l'axe médian (A) du boîtier de meulage de brique (1).
  10. Boîtier de meulage de brique selon la revendication 9, dans lequel l'ouverture de sortie (8) se situe dans un quadrant du boîtier de meulage (1) disposé devant la zone de départ (9).
  11. Boîtier de meulage de brique selon l'une quelconque des revendications précédentes, dans lequel le bord d'ouverture de l'ouverture de sortie (8) disposé à proximité de la spirale dans la direction circonférentielle est formé par une section (11) de la paroi extérieure (2) s'étendant de manière tangentielle.
  12. Boîtier de meulage de brique selon l'une quelconque des revendications précédentes, dans lequel l'ouverture de sortie (8) s'étend axialement au-dessus de toute la largeur totale de la paroi extérieure (2).
EP06124227A 2005-11-17 2006-11-16 Couverture pour une meule abrasive Active EP1787754B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005054935A DE102005054935B4 (de) 2005-11-17 2005-11-17 Gehäuse für ein Schleifrad

Publications (2)

Publication Number Publication Date
EP1787754A1 EP1787754A1 (fr) 2007-05-23
EP1787754B1 true EP1787754B1 (fr) 2008-10-15

Family

ID=37764000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06124227A Active EP1787754B1 (fr) 2005-11-17 2006-11-16 Couverture pour une meule abrasive

Country Status (3)

Country Link
EP (1) EP1787754B1 (fr)
AT (1) ATE411137T1 (fr)
DE (2) DE102005054935B4 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE90107C (fr) *
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 (de) 1978-03-15 1979-04-04 Manfred Koerner Nebelarme schutzhaube fuer rotierende werkzeuge
DE10250272B3 (de) * 2002-10-28 2004-04-15 Novoceric Transportanlagen Gmbh Vorrichtung zum materialabtragenden Bearbeiten von Bausteinen
DE10305033A1 (de) * 2002-11-22 2004-06-03 Robert Bosch Gmbh Elektrohandwerkzeugmaschine
JP2005001896A (ja) 2003-06-09 2005-01-06 Fuji Heavy Ind Ltd ガラス切断装置

Also Published As

Publication number Publication date
EP1787754A1 (fr) 2007-05-23
ATE411137T1 (de) 2008-10-15
DE102005054935B4 (de) 2008-10-16
DE502006001817D1 (de) 2008-11-27
DE102005054935A1 (de) 2007-05-31

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