EP0442083A1 - Grinding device for knifes - Google Patents
Grinding device for knifes Download PDFInfo
- Publication number
- EP0442083A1 EP0442083A1 EP90124014A EP90124014A EP0442083A1 EP 0442083 A1 EP0442083 A1 EP 0442083A1 EP 90124014 A EP90124014 A EP 90124014A EP 90124014 A EP90124014 A EP 90124014A EP 0442083 A1 EP0442083 A1 EP 0442083A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slip ring
- grinding device
- knife
- grinding
- housing
- 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.)
- Granted
Links
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
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
- B24B3/54—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives
Definitions
- the invention relates to a grinding device for knives.
- Knives which are used professionally in slaughterhouses or the like, have to be sharpened very frequently and if this work is carried out by hand, there is the disadvantage that the cutting edge is ground "on sight", which usually does not result in a uniform cutting surface. Often, too much of the cut surface is removed in this grinding process, so that the knives have a much shorter lifespan. H. the knife wear is very high.
- the invention has for its object to provide a grinding device for knives, which can also be used in smaller companies and which ensures that the cutting edge can always be ground evenly and without too much material removal.
- the knife is expressed in a guide is used and an annular grinding device, a slip ring, is used, and the grinding process takes place along the inside of the ring surface.
- the knife is held on the handle and inserted into an opening in a housing containing the slip ring and moved along the ring surface of the slip ring via a guide.
- the knife rests with its knife back on the guide.
- the actual grinding process takes place inside a drum, so that it is not possible for the knife to be knocked out of the hand and metal dust to escape to the outside.
- the housing is preferably made watertight at least in the lower region, so that the housing can be partially filled with water so that the grinding process takes place on a wet ring surface of the slip ring.
- the water also serves at the same time to bind the abrasion, so that dust generation is eliminated.
- a housing 1 is drawn, the in its interior receives a drum 2, which is driven by a motor 4 recognizable in FIG. 1.
- a slip ring 3 is fixed via appropriate clamping means, so that when the drum 2 is driven, the slip ring 3 is driven in a rotating manner. With this type of attachment of the actual slip ring 3 to the drum 2, the slip ring 3 can be attached quickly and exchanged quickly.
- the front of the housing 1 is closed by a cover 11, which is shown removed in FIG. 2.
- This cover 11 has two openings on its front side, which are closed by two disks 12 and 14 in the interior of the cover.
- These two disks 12 and 14 are supported in the lower area on a guide 15 and are in the upper part with an adjusting device 16 and 17, z. B. a screw drive, so that an adjustment of the disks 12, 14 in the guide 15 is possible.
- the disks 12, 14 themselves have slots 6 and 7 and carry on their back, i. H. in the interior of the housing 1 directed knife guides 8 and 9, which are designed and arranged so that when the knife, not shown, the knife back is on the lower edge of the knife guides 8 and 9 and the knife edge on the inside, i.e. H. the ring surface, the slip ring 3 comes to rest.
- the cover 11 carries a direction of rotation switch 5 with which the direction of rotation of the slip ring 3 can be changed, ie rotates once the slip ring 3 to the right and once the slip ring 3 turns to the left.
- a safety disk 10 is adjusted so that one or the other slot 6 or 7 is closed depending on the direction of rotation of the slip ring 3.
- the direction of rotation switch is to the right, i. H. the right slot 7 is open and the left slot 6 is closed and the slip ring 3 rotates counterclockwise within the housing 1.
- the slots 6 and 7 are arranged in the disks 12 and 14 so that, when the knife is inserted, they make contact of the knife edges with the inside, ie. H. the ring side, the slip ring 3. This can be seen particularly clearly from FIG. 1, where part of the slip ring 3 can be seen in the slot 7.
- the adjusting devices 16 and 17 enable the slits 6 and 7 to be adjusted in relation to the inner surface of the slip ring 3, so that readjustment is possible as a result.
- the inside of the cover 11 is provided with a circumferential seal 18 which comes to rest on the end face 22 of the housing 1 when the cover 11 is closed. Furthermore, 1 water level viewing window 20 and 21 are arranged in the lower region of the housing, which control the height of the water level allow inside the housing. The water can be filled into the housing via a water filler connection 19 and a corresponding water outlet connection cannot be seen in the drawing and is provided in the lower region of the housing 1.
- a knife is inserted into the slot 7 and thus into the knife guide 8 and the cutting edge of the knife is now pressed against the inside of the slip ring 3.
- the slip ring 3 is made of flexible material, with the drum 2 made of relatively flexible material, e.g. B. plastic can exist.
- the surface of the knife to be ground can now be conveniently pressed against the inside of the slip ring 3 and this easily adapts to the shape of the cut surface of the object to be ground.
- the cut surface is "lapped", so to speak, creating a very fine cutting edge.
- the slot 6 is then used so that the other side of the cutting edge can also be ground.
- the slot 6 remains closed until the actual slip ring 3 is driven in the opposite direction by actuating the direction of rotation switch 5, ie now rotates clockwise and thus also in the slot 6 and the knife guide 9 knives used creates a grinding cut.
- the safety plate 10 is also changed over, ie the two components 5 and 10 are coupled to one another in such a way that only the appropriate slot opening is free.
- the procedure here can be such that when the motor 4 is switched off and thus the direction of rotation switch 5 in the arrangement according to FIG. 1 is at zero, the safety plate 10 closes both slots 6 and 7.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Schleifvorrichtung für Messer.The invention relates to a grinding device for knives.
Messer, die professionell in Schlachthöfen od. dgl. benutzt werden, müssen sehr häufig nachgeschärft werden und falls diese Arbeiten von Hand durchgeführt werden, besteht der Nachteil, daß die Schneide "auf Sicht" geschliffen wird, wodurch meistens keine gleichmäßig verlaufende Schnittfläche erhalten wird. Oft wird in diesem Schleifverfahren zuviel von der Schnittfläche weggenommen, so daß die Messer eine wesentlich kürzere Lebensdauer haben, d. h. der Messerverschleiß sehr hoch ist.Knives, which are used professionally in slaughterhouses or the like, have to be sharpened very frequently and if this work is carried out by hand, there is the disadvantage that the cutting edge is ground "on sight", which usually does not result in a uniform cutting surface. Often, too much of the cut surface is removed in this grinding process, so that the knives have a much shorter lifespan. H. the knife wear is very high.
Die Erfindung hat sich zur Aufgabe gestellt, eine Schleifvorrichtung für Messer zu schaffen, die auch in kleineren Betrieben eingesetzt werden kann und die bewirkt, daß die Schneide stets gleichmäßig und ohne zuviel Materialabhub geschliffen werden kann.The invention has for its object to provide a grinding device for knives, which can also be used in smaller companies and which ensures that the cutting edge can always be ground evenly and without too much material removal.
Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelöst.This object on which the invention is based is achieved by the teaching of the main claim.
Mit anderen Worten ausgedrückt wird das Messer in eine Führung eingesetzt und es wird mit einer ringförmigen Schleifvorrichtung, einem Schleifring, gearbeitet, und zwar erfolgt der Schleifvorgang entlang der Innenseite der Ringfläche. Das Messer wird dabei am Griff festgehalten und in eine Öffnung eines den Schleifring enthaltenden Gehäuses gesteckt und über eine Führung entlang der Ringfläche des Schleifringes bewegt. Das Messer stützt sich dabei mit seinem Messerrücken auf der Führung ab. Das eigentliche Schleifverfahren findet innerhalb einer Trommel statt, so daß es nicht möglich ist, daß das Messer aus der Hand geschlagen werden kann und Metallstaub nach außen gelangt. Vorzugsweise wird dabei das Gehäuse zumindest im unteren Bereich wasserdicht ausgebildet, so daß das Gehäuse teilweise voll Wasser gefüllt werden kann, so daß der Schleifvorgang an einer nassen Ringfläche des Schleifringes erfolgt. Das Wasser dient weiterhin gleichzeitig zur Bindung des Abriebs, so daß eine Staubentwicklung ausgeschaltet ist.In other words, the knife is expressed in a guide is used and an annular grinding device, a slip ring, is used, and the grinding process takes place along the inside of the ring surface. The knife is held on the handle and inserted into an opening in a housing containing the slip ring and moved along the ring surface of the slip ring via a guide. The knife rests with its knife back on the guide. The actual grinding process takes place inside a drum, so that it is not possible for the knife to be knocked out of the hand and metal dust to escape to the outside. The housing is preferably made watertight at least in the lower region, so that the housing can be partially filled with water so that the grinding process takes place on a wet ring surface of the slip ring. The water also serves at the same time to bind the abrasion, so that dust generation is eliminated.
Vorteilhafte Ausgestaltungen sind in den Unteransprüchen erläutert.Advantageous configurations are explained in the subclaims.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen beschrieben. Die Zeichnungen zeigen dabei in
- Fig. 1
- schaubildlich eine Ansicht auf die Schleifvorrichtung und in
- Fig. 2
- eine Darstellung, in welcher der vordere Deckel der Schleifvorrichtung abgenommen ist.
- Fig. 1
- a view of the grinding device and in
- Fig. 2
- a representation in which the front cover of the grinding device is removed.
In den Zeichnungen ist ein Gehäuse 1 gezeichnet, das in seinem Inneren eine Trommel 2 aufnimmt, die von einem in Fig. 1 erkennbaren Motor 4 angetrieben wird.In the drawings, a housing 1 is drawn, the in its interior receives a
An der vorderen Kante der Trommel 2 ist über entsprechende Klemmittel ein Schleifring 3 festgelegt, so daß bei Antrieb der Trommel 2 der Schleifring 3 umlaufend angetrieben wird. Durch diese Art der Befestigung des eigentlichen Schleifringes 3 an der Trommel 2 kann der Schleifring 3 schnell angebracht und schnell ausgetauscht werden.At the front edge of the
Die Vorderseite des Gehäuses 1 ist durch einen Deckel 11 verschlossen, der in Fig. 2 abgenommen dargestellt ist. Dieser Deckel 11 weist an seiner Frontseite zwei Öffnungen auf, die im Inneren des Deckels durch zwei Scheiben 12 und 14 verschlossen sind. Diese zwei Scheiben 12 und 14 stützen sich im unteren Bereich auf einer Führung 15 ab und sind im oberen Teil mit je einer Verstelleinrichtung 16 bzw. 17, z. B. einem Schraubantrieb, ausgerüstet, so daß ein Verstellen der Scheiben 12, 14 in der Führung 15 möglich ist. Die Scheiben 12, 14 selbst weisen Schlitze 6 und 7 auf und tragen an ihrer Rückseite, d. h. in das Innere des Gehäuses 1 gerichtete Messerführungen 8 und 9, die so ausgebildet und angeordnet sind, daß bei eingesetztem, nicht dargestelltem Messer der Messerrücken an der Unterkante der Messerführungen 8 und 9 liegt und die Messerschneide an die Innenseite, d. h. der Ringfläche, des Schleifringes 3 zur Anlage kommt.The front of the housing 1 is closed by a
Weiterhin trägt der Deckel 11 einen Drehrichtungsschalter 5, mit dem die Umlaufrichtung des Schleifringes 3 umgestellt werden kann, d. h. einmal dreht der Schleifring 3 nach rechts und einmal dreht der Schleifring 3 nach links.Furthermore, the
Gleichzeitig bei Betätigen des Drehrichtungsschalters 5 wird eine Sicherheitsscheibe 10 verstellt, so daß in Abhängigkeit der Umlaufrichtung des Schleifringes 3 der eine oder andere Schlitz 6 bzw. 7 verschlossen ist.At the same time when the direction of
Bei dem in Fig. 1 dargestellten Ausführungsbeispiel steht der Drehrichtungsschalter nach rechts, d. h. der rechte Schlitz 7 ist geöffnet und der linke Schlitz 6 ist geschlossen und der Schleifring 3 dreht sich innerhalb des Gehäuses 1 entgegen dem Uhrzeigersinn.In the embodiment shown in Fig. 1, the direction of rotation switch is to the right, i. H. the
Die Schlitze 6 und 7 sind in den Scheiben 12 und 14 so angeordnet, daß sie bei eingesetztem Messer einen Kontakt der Messerschneiden mit der Innenseite, d. h. der Ringseite, des Schleifringes 3 ermöglichen. Dies geht besonders deutlich aus Fig. 1 hervor, wo ein Teil des Schleifringes 3 im Schlitz 7 erkennbar ist.The
Die Verstelleinrichtungen 16 und 17 ermöglichen eine Einstellung des Schlitzes 6 bzw. 7 in der Relation zur Innenfläche des Schleifringes 3, so daß dadurch ein Nachstellen möglich ist.The adjusting
Die Innenseite des Deckels 11 ist mit einer umlaufenden Dichtung 18 versehen, die bei geschlossenem Deckel 11 an der Stirnseite 22 des Gehäuses 1 zur Anlage kommt. Weiterhin sind im unteren Bereich des Gehäuses 1 Wasserstandssichtfenster 20 und 21 angeordnet, die die Kontrolle der Höhe des Wasserspiegels innerhalb des Gehäuses ermöglichen. Das Wasser kann in das Gehäuse über einen Wassereinfüllanschluß 19 eingefüllt werden und ein entsprechender Wasserabflußanschluß ist aus der Zeichnung nicht erkennbar und ist im unteren Bereich des Gehäuses 1 vorgesehen.The inside of the
Die Wirkungsweise dieser Einrichtung ist wie folgt:This device works as follows:
Ein Messer wird bei dem in Fig. 1 dargestellten Ausführungsbeispiel in den Schlitz 7 und damit in die Messerführung 8 eingesetzt und die Schnittkante des Messers wird nun gegen die Innenseite des Schleifringes 3 gedrückt. Der Schleifring 3 besteht aus flexiblem Material, wobei auch die Trommel 2 aus relativ flexiblem Material, z. B. Kunststoff, bestehen kann. Die zu schleifende Fläche des Messers kann nunmehr bequem an die Innenseite des Schleifringes 3 angedrückt werden und diese paßt sich der Form der Schnittfläche des zu schleifenden Objektes leicht an.In the exemplary embodiment shown in FIG. 1, a knife is inserted into the
Durch die richtige Feinheit der Körnung und durch das entsprechende Schleifmedium, mit dem das Schleifverfahren stattfindet, wird die Schnittfläche sozusagen "geläppt", wodurch eine sehr feine Schneide entsteht.With the correct fineness of the grit and the appropriate grinding medium with which the grinding process takes place, the cut surface is "lapped", so to speak, creating a very fine cutting edge.
Damit die andere Seite der Schneide auch geschliffen werden kann, wird anschließend der Schlitz 6 benutzt. Der Schlitz 6 bleibt so lange geschlossen, bis durch Betätigen des Drehrichtungsschalters 5 der eigentliche Schleifring 3 entgegengesetzt angetrieben wird, d. h. nunmehr im Uhrzeigersinn umläuft und damit auch bei dem in den Schlitz 6 und die Messerführung 9 eingesetzten Messer einen schleifenden Schliff erzeugt. Durch Betätigen des Drehrichtungsschalters 5 wird gleichzeitig die Sicherheitsplatte 10 mit umgestellt, d. h. die beiden Bauteile 5 und 10 sind so miteinander gekoppelt, daß immer nur die zweckentsprechende Schlitzöffnung frei ist. Hierbei kann so vorgegangen werden, daß dann, wenn der Motor 4 ausgeschaltet ist und damit der Drehrichtungsschalter 5 bei der Anordnung gemäß Fig. 1 auf Null steht, die Sicherheitsplatte 10 beide Schlitze 6 und 7 verschließt.The
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90124014T ATE103521T1 (en) | 1990-02-12 | 1990-12-13 | KNIFE GRINDING DEVICE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL9000335A NL9000335A (en) | 1990-02-12 | 1990-02-12 | GRINDING DEVICE FOR GRINDING KNIVES. |
NL9000335 | 1990-02-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0442083A1 true EP0442083A1 (en) | 1991-08-21 |
EP0442083B1 EP0442083B1 (en) | 1994-03-30 |
Family
ID=19856580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90124014A Expired - Lifetime EP0442083B1 (en) | 1990-02-12 | 1990-12-13 | Grinding device for knifes |
Country Status (5)
Country | Link |
---|---|
US (1) | US5133157A (en) |
EP (1) | EP0442083B1 (en) |
AT (1) | ATE103521T1 (en) |
DE (2) | DE9005051U1 (en) |
NL (1) | NL9000335A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080132154A1 (en) * | 2006-12-05 | 2008-06-05 | Jewett Tony C | Instrument sharpener system |
US8597083B2 (en) | 2009-12-03 | 2013-12-03 | Michael G. Borsch | Blade sharpening system for multiple blade shapes |
TW201210722A (en) * | 2010-09-03 | 2012-03-16 | Rexon Ind Corp Ltd | Tile cutter with a liquid level display |
US8858299B2 (en) * | 2012-10-05 | 2014-10-14 | Thomas Benjamin Boelter | Device and method for processing a blade edge |
CN109894933A (en) * | 2019-04-14 | 2019-06-18 | 肖玉忠 | A kind of portable sharpening machine |
CN110281099B (en) * | 2019-06-21 | 2021-03-30 | 宁波爵盛科技有限公司 | Grinding device for iron ring |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2751721A (en) * | 1953-07-13 | 1956-06-26 | Richard B Smith | Blade sharpening apparatus |
AT236831B (en) * | 1962-04-25 | 1964-11-10 | Feinmechanik G M B H | Grinding machine |
US3546819A (en) * | 1968-10-17 | 1970-12-15 | Univ California | Microtome knife sharpener |
FR2310835A1 (en) * | 1975-05-10 | 1976-12-10 | Streicher Emide Metall | Motor driven knife sharpener with enclosure - having inclined guide slots and at least part of enclosure removable |
DE3151925A1 (en) * | 1981-12-30 | 1983-07-07 | Bayer Ag, 5090 Leverkusen | Elastic grinding materials based on polyurethane-urea gels and a process for their preparation |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3140526A (en) * | 1960-03-25 | 1964-07-14 | Tlamicha Adolf Jaroslav | Method and apparatus for delustering plastic thread for textiles |
US3332173A (en) * | 1964-06-30 | 1967-07-25 | Cory Corp | Sharpener for cutting instruments |
US4236355A (en) * | 1978-07-24 | 1980-12-02 | Control Data Corporation | Precision grinding wheel mount |
US4627194A (en) * | 1984-03-12 | 1986-12-09 | Friel Daniel D | Method and apparatus for knife and blade sharpening |
IT1184339B (en) * | 1984-03-14 | 1987-10-28 | Hauni Werke Koerber & Co Kg | DEVICE FOR SHARPENING THE ROTARY KNIVES OF A TOBACCO CUTTER |
US4974370A (en) * | 1988-12-07 | 1990-12-04 | General Signal Corp. | Lapping and polishing machine |
-
1990
- 1990-02-12 NL NL9000335A patent/NL9000335A/en not_active Application Discontinuation
- 1990-05-04 DE DE9005051U patent/DE9005051U1/en not_active Expired - Lifetime
- 1990-12-13 EP EP90124014A patent/EP0442083B1/en not_active Expired - Lifetime
- 1990-12-13 AT AT90124014T patent/ATE103521T1/en not_active IP Right Cessation
- 1990-12-13 DE DE90124014T patent/DE59005204D1/en not_active Expired - Fee Related
-
1991
- 1991-02-06 US US07/651,576 patent/US5133157A/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2751721A (en) * | 1953-07-13 | 1956-06-26 | Richard B Smith | Blade sharpening apparatus |
AT236831B (en) * | 1962-04-25 | 1964-11-10 | Feinmechanik G M B H | Grinding machine |
US3546819A (en) * | 1968-10-17 | 1970-12-15 | Univ California | Microtome knife sharpener |
FR2310835A1 (en) * | 1975-05-10 | 1976-12-10 | Streicher Emide Metall | Motor driven knife sharpener with enclosure - having inclined guide slots and at least part of enclosure removable |
DE3151925A1 (en) * | 1981-12-30 | 1983-07-07 | Bayer Ag, 5090 Leverkusen | Elastic grinding materials based on polyurethane-urea gels and a process for their preparation |
Also Published As
Publication number | Publication date |
---|---|
DE59005204D1 (en) | 1994-05-05 |
NL9000335A (en) | 1991-09-02 |
US5133157A (en) | 1992-07-28 |
ATE103521T1 (en) | 1994-04-15 |
DE9005051U1 (en) | 1990-08-16 |
EP0442083B1 (en) | 1994-03-30 |
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