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WO2008154910A1 - Device for resharpening razor blades - Google Patents

Device for resharpening razor blades Download PDF

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Publication number
WO2008154910A1
WO2008154910A1 PCT/DE2008/001020 DE2008001020W WO2008154910A1 WO 2008154910 A1 WO2008154910 A1 WO 2008154910A1 DE 2008001020 W DE2008001020 W DE 2008001020W WO 2008154910 A1 WO2008154910 A1 WO 2008154910A1
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WO
WIPO (PCT)
Prior art keywords
razor
grinding surface
grinding
cutting edge
grain diameter
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.)
Ceased
Application number
PCT/DE2008/001020
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German (de)
French (fr)
Inventor
Guido Wilbert
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2008154910A1 publication Critical patent/WO2008154910A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
    • B24D15/10—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of safety-razor blades

Definitions

  • the invention relates to a device for re-sharpening of razor blades, with a grinding surface over which the razor blade at an acute angle while pulling its abutting against the grinding surface cutting edge is movable.
  • the grinding surface of this NachMrfvorraum is formed by a leather strap. Further suitable materials for forming the grinding surface are stone, plastic mass or fabric with incorporated grinding material.
  • the soft leather strap leads to a bend and rounding of the cutting edge, which limits the frequency of possible resharpening.
  • the invention has for its object to provide a new grinding device of the type mentioned, which allows a more effective resharpening than this known grinding device.
  • the device according to the invention which achieves this object is characterized in that the grinding surface is formed by an abrasive material having a maximum abrasive grain diameter of less than 8 ⁇ m.
  • abrasive grain diameters of a maximum of 6 microns the average abrasive grain diameter is preferably between 1, 5 and 2 microns.
  • Particularly suitable for grinding are razor blades which are held inseparably by a razor head of a wet razor and whose cutting edge is accessible only from one side, wherein the razor head has an elongate stop running parallel to the cutting edge of the razor blade. The stop ensures optimum angular position of the razor blade to the grinding surface.
  • a further such stop can be provided on the side opposite the stop, the cutting edge of the razor blade projecting beyond the plane spanned by the stop.
  • a razor head which is pivotable with a holding part of the wet shaver always optimally adjusts its angular position to the grinding surface when the razor head is moved by means of the holding part. Re-sharpening takes place efficiently with the least possible material removal.
  • FIG. 1 shows an apparatus according to the invention for regrinding razor blades in a sectional side view
  • FIG. 2 shows the device of FIG. 1 in a plan view
  • FIG. 3 shows the device of FIG. 1 rotated by 90 ° relative to the view of FIG Side view in section
  • FIG. 4 shows a second exemplary embodiment of a device according to the invention in a perspective view
  • FIG. 5 shows the device of FIG. 1 in a side view.
  • a razor head 3 of a razor head and a holding stem 4 comprehensive wet shaver 5 is arranged on a flat grinding surface 1 of a grinding wheel 2 formed of stone material.
  • the positioning head 3 is pivotably connected to the holding part 4 about an axis 6 parallel to the grinding surface 1.
  • the razor head 2 has razor blades 7 and 8, which are connected undetachably, whose cutting edges 9 and 10 are arranged between two elongate stops 11 and 12, which extend in their length parallel to the cutting edges 9 and 10.
  • the razor blades project with their cutting edges at an acute angle beyond a plane 13 spanned by the two stops 11 and 12.
  • a portion of the abutment surface of the stopper 11 is formed by an insert 14, which allows a slight sliding of the razor head 3 on the skin.
  • the razor head 3 each has a short guide rail 15, which projects slightly beyond the stops 11 and the plane 13 spanned by this plane.
  • the grinding wheel 2 is connected to a carrier plate 16, which is angled on one side to form a stop 17.
  • recess 18 engages the stop 17 facing guide rail 15 of the razor head 3 a.
  • abrasive grains of the grinding wheel are indicated, wherein the maximum abrasive grain diameter in the embodiment shown is 6 microns.
  • the average diameter is between 1, 5 and 2 ⁇ m (The abrasive grain size distribution corresponds to the value 8000 according to the Japanese industrial standards JIS R 6001 and 6002: 1998, which are based on the international standards ISO 8416-1 and -2: 1996).
  • the wet shaver 5 is moved by means of the holding stem 4 as indicated by arrow 20 in the longitudinal direction of the grinding surface 1, wherein the cutting edges 9 and 10 of the razor blades 7 and 8 are tightened.
  • the pivotal movement of the razor head 3 on the handle 4 ensures an optimal angular position of the razor blades 7 and 8 with respect to the grinding surface. 1
  • This angular position in conjunction with the abovementioned abrasive grain density results in an effective sharpening of the blades.
  • a holder plate 16a has an inclined carrier surface 21 for receiving a grinding wheel 2a with a grinding surface 1a.
  • the support surface 21 adjoins the side of a web-like, forming a guide stop 17a.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention relates to a device for resharpening razor blades (7, 8), comprising a grinding surface (1) along which the razor blade can be moved at an acute angle by pulling the cutting edge (9, 10) that rests against the grinding surface (1) therealong. According to the invention, the grinding surface (1) is formed by an abrasive material that has a maximum abrasive grain diameter of 8 µm. Such a small grain diameter and even smaller grain diameters make it possible to frequently resharpen especially razor blades which have a cutting edge that is accessible from only one side and which are retained within a razor head (3) pivotally connected to a handle (4) of a wet razor (5). During the grinding process, the optimum grinding angle is automatically adjusted, thus ensuring optimum resharpening along with said abrasive grain size.

Description

Beschreibung: Description:

„Vorrichtung zum Nαchschärfen von Rasierklingen""Apparatus for sharpening razor blades"

Die Erfindung betrifft eine Vorrichtung zum Nachschärfen von Rasierklingen, mit einer Schleiffläche, über welche die Rasierklinge im spitzen Winkel unter Nachziehen ihrer gegen die Schleiffläche anliegenden Schneidkante bewegbar ist.The invention relates to a device for re-sharpening of razor blades, with a grinding surface over which the razor blade at an acute angle while pulling its abutting against the grinding surface cutting edge is movable.

Aus der DE 202004003581 Ul ist eine solche Nachschärfvorrichtung bekannt. Die Schleiffläche dieser Nachschärfvorrichtung ist durch einen Lederriemen gebildet. Als geeignete Materialien zur Bildung der Schleiffläche werden weiterhin Stein, Kunststoffmasse oder Gewebe mit eingearbeitetem Schleifmaterial genannt. Der weiche Lederriemen führt zu einer Abbiegung und Abrundung der Schneidkante, was die Häufigkeit möglicher Nachschärfυngen begrenzt.From DE 202004003581 Ul such Nachscharfvorrichtung is known. The grinding surface of this Nachschärfvorrichtung is formed by a leather strap. Further suitable materials for forming the grinding surface are stone, plastic mass or fabric with incorporated grinding material. The soft leather strap leads to a bend and rounding of the cutting edge, which limits the frequency of possible resharpening.

Der Erfindung liegt die Aufgabe zugrunde, eine neue Schleifvorrichtung der eingangs erwähnten Art zu schaffen, welche ein effektiveres Nachschärfen als diese bekannte Schleifvorrichtung ermöglicht.The invention has for its object to provide a new grinding device of the type mentioned, which allows a more effective resharpening than this known grinding device.

Die diese Aufgabe lösende Vorrichtung nach der Erfindung ist dadurch gekennzeichnet, dass die Schleiffläche durch ein Schleifmaterial mit einem maximalen Schleifkorndurchmesser kleiner 8 μm gebildet ist.The device according to the invention which achieves this object is characterized in that the grinding surface is formed by an abrasive material having a maximum abrasive grain diameter of less than 8 μm.

Überraschend hat sich herausgestellt, dass bei einem solchen und noch kleinerem Schleifkorndurchmesser durch Nachziehen der Schleifkante bei geringst möglicher Materialabtragung ein häufiges Nachschärfen unter Beibehaltung der Klingenqualität möglich ist. Die Lebensdauer der Klingen kann auf diese Weise wesentlich verlängert werden. Eine weitere deutliche Verbesserung wird bei Schleifkorndurchmessern von maximal 6 μm erreicht, wobei der mittlere Schleif korndurchmesser vorzugsweise zwischen 1 ,5 und 2 μm liegt.Surprisingly, it has been found that with such and even smaller abrasive grain diameter by retightening the grinding edge with the least possible material removal frequent sharpening while maintaining the blade quality is possible. The life of the blades can be significantly extended in this way. A further significant improvement is achieved in abrasive grain diameters of a maximum of 6 microns, the average abrasive grain diameter is preferably between 1, 5 and 2 microns.

Zum Schleifen in Betracht kommen insbesondere Rasierklingen, die unlösbar durch einen Rasierkopf eines Nassrasierapparates gehalten sind und deren Schneidkante nur von einer Seite her zugänglich ist, wobei der Rasierkopf einen länglichen, parallel zur Schneidkante der Rasierklinge verlaufenden Anschlag aufweist. Der Anschlag sichert eine optimale Winkelstellung der Rasierklinge zur Schleif- fläche.Particularly suitable for grinding are razor blades which are held inseparably by a razor head of a wet razor and whose cutting edge is accessible only from one side, wherein the razor head has an elongate stop running parallel to the cutting edge of the razor blade. The stop ensures optimum angular position of the razor blade to the grinding surface.

Insbesondere kann, wie dies bei handelsüblichen Rasierköpfen üblich ist, auf der dem Anschlag gegenüberliegenden Seite ein weiterer solcher Anschlag vorgesehen sein, wobei die Schneidkante der Rasierklinge über die durch die An- schlage aufgespannte Ebene hinaus vorsteht.In particular, as is customary in the case of commercially available razor heads, a further such stop can be provided on the side opposite the stop, the cutting edge of the razor blade projecting beyond the plane spanned by the stop.

Insbesondere ein mit einem Halteteil des Nassrasierapparates schwenkbeweglicher Rasierkopf stellt sich beim Bewegen des Rasierkopfs mit Hilfe des Halteteils stets optimal in seiner Winkelstellung zur Schleiffläche ein. Das Nachschärfen erfolgt effizient unter geringst möglichem Materialabtrag.In particular, a razor head which is pivotable with a holding part of the wet shaver always optimally adjusts its angular position to the grinding surface when the razor head is moved by means of the holding part. Re-sharpening takes place efficiently with the least possible material removal.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiel und der beiliegenden, sich auf dieses Ausführungsbeispiel beziehenden Zeichnungen erläutert. Es zeigen:The invention will be explained below with reference to an embodiment and the accompanying, relating to this embodiment drawings. Show it:

Fig. 1 eine erfindungsgemäße Vorrichtung zum Nachschleifen von Rasierklingen in einer geschnittenen Seitenansicht, Fig.2 die Vorrichtung von Fig. 1 in einer Draufsicht, Fig.3 die Vorrichtung von Fig. 1 in einer zu der Ansicht von Fig. 1 um 90° gedrehten Seitenansicht im Schnitt,1 shows an apparatus according to the invention for regrinding razor blades in a sectional side view, FIG. 2 shows the device of FIG. 1 in a plan view, FIG. 3 shows the device of FIG. 1 rotated by 90 ° relative to the view of FIG Side view in section,

Fig. 4 ein zweites Ausführungsbeispiel für eine erfindungsgemäße Vorrichtung in perspektivischer Ansicht, und Fig. 5 die Vorrichtung von Fig. 1 in einer Seitenansicht.4 shows a second exemplary embodiment of a device according to the invention in a perspective view, and FIG. 5 shows the device of FIG. 1 in a side view.

Auf einer ebenen Schleiffläche 1 einer aus Steinmaterial gebildeten Schleifscheibe 2 ist ein Rasierkopf 3 eines diesen Rasierkopf und einen Haltestiel 4 umfassenden Nassrasierapparates 5 angeordnet. Der Rαsierkopf 3 ist um eine zur Schleiffläche 1 parallele Achse 6 schwenkbeweg- lich mit dem Halteteil 4 verbunden.On a flat grinding surface 1 of a grinding wheel 2 formed of stone material, a razor head 3 of a razor head and a holding stem 4 comprehensive wet shaver 5 is arranged. The positioning head 3 is pivotably connected to the holding part 4 about an axis 6 parallel to the grinding surface 1.

In dem gezeigten Ausführungsbeispiel weist der Rasierkopf 2 mit diesem unlösbar verbundene Rasierklingen 7 und 8 auf, deren Schneidkanten 9 und 10 zwischen zwei länglichen Anschlägen 11 und 12 angeordnet sind, welche sich in ihrer Länge parallel zu den Schneidkanten 9 und 10 erstrecken. Die Rasierklingen stehen mit ihren Schneidkanten im spitzen Winkel über eine durch die beiden Anschläge 11 und 12 aufgespannte Ebene 13 hinaus vor.In the exemplary embodiment shown, the razor head 2 has razor blades 7 and 8, which are connected undetachably, whose cutting edges 9 and 10 are arranged between two elongate stops 11 and 12, which extend in their length parallel to the cutting edges 9 and 10. The razor blades project with their cutting edges at an acute angle beyond a plane 13 spanned by the two stops 11 and 12.

Ein Abschnitt der Anschlagfläche des Anschlags 11 ist durch einen Einsatz 14 gebildet, der ein leichtes Gleiten des Rasierkopfs 3 auf der Haut ermöglicht.A portion of the abutment surface of the stopper 11 is formed by an insert 14, which allows a slight sliding of the razor head 3 on the skin.

An seinen beiden Längsenden weist der Rasierkopf 3 jeweils eine kurze Führungsschiene 15 auf, die geringfügig über die Anschläge 11 und die durch diese Ebene aufgespannte Ebene 13 hinaus vorsteht.At its two longitudinal ends, the razor head 3 each has a short guide rail 15, which projects slightly beyond the stops 11 and the plane 13 spanned by this plane.

Wie insbesondere aus Fig.3 hervorgeht, ist die Schleifscheibe 2 mit einer Träger- platte 16 verbunden, die an einer Seite unter Bildung eines Anschlags 17 abgewinkelt ist. In eine zwischen der Schleifscheibe 2 und dem Anschlag 17 gebildete Mulde 18 greift die dem Anschlag 17 zugewandte Führungsschiene 15 des Rasierkopfes 3 ein.As can be seen in particular from FIG. 3, the grinding wheel 2 is connected to a carrier plate 16, which is angled on one side to form a stop 17. In a formed between the grinding wheel 2 and the stop 17 recess 18 engages the stop 17 facing guide rail 15 of the razor head 3 a.

In Fig. 1 bei 19 sind Schleifkörner der Schleifscheibe angedeutet, wobei der maximale Schleifkorndurchmesser in dem gezeigten Ausführungsbeispiel 6 μm beträgt. Der mittlere Durchmesser liegt zwischen 1 ,5 und 2 μm (Die Schleifkorngrößenverteilung entspricht dem Wert 8000 nach den japanischen Industriestandards JIS R 6001 und 6002 : 1998, die auf den internationalen Standards ISO 8416-1 und -2 : 1996 beruhen.).In Fig. 1 at 19 abrasive grains of the grinding wheel are indicated, wherein the maximum abrasive grain diameter in the embodiment shown is 6 microns. The average diameter is between 1, 5 and 2 μm (The abrasive grain size distribution corresponds to the value 8000 according to the Japanese industrial standards JIS R 6001 and 6002: 1998, which are based on the international standards ISO 8416-1 and -2: 1996).

Zum Nachschärfen der Rasierklingen 7 und 8 des Rasierkopfes 3 wird der Nassrasierapparat 5 mit Hilfe des Haltestiels 4 gemäß Pfeil 20 in Längsrichtung der Schleiffläche 1 bewegt, wobei die Schneidkanten 9 und 10 der Rasierklingen 7 und 8 nachgezogen werden.For re-sharpening of the razor blades 7 and 8 of the razor head 3, the wet shaver 5 is moved by means of the holding stem 4 as indicated by arrow 20 in the longitudinal direction of the grinding surface 1, wherein the cutting edges 9 and 10 of the razor blades 7 and 8 are tightened.

Die Schwenkbeweglichkeit des Rasierkopfs 3 an dem Haltegriff 4 sichert eine optimale Winkelposition der Rasierklingen 7 und 8 in Bezug auf die Schleiffläche 1. Durch diese Winkelposition in Verbindung mit der genannten Schleifkorndichte kommt es zu einer effektiven Nachschärfung der Klingen.The pivotal movement of the razor head 3 on the handle 4 ensures an optimal angular position of the razor blades 7 and 8 with respect to the grinding surface. 1 This angular position in conjunction with the abovementioned abrasive grain density results in an effective sharpening of the blades.

Es kann solange nachgeschärft werden, wie die Klingen mit ihren Schneidkanten 9 und 10 über die Ebene 13 hinaus vorstehen.It can be sharpened as long as the blades protrude with their cutting edges 9 and 10 on the plane 13 addition.

Bei einem in den Figuren 4 und 5 dargestellten Ausführungsbeispiel für eine Vorrichtung zum Nachschleifen von Rasierklingen weist eine Halterplatte 16a eine schräge Trägerfläche 21 für die Aufnahme einer Schleifscheibe 2a mit einer Schleiffläche 1 a auf. Die Trägerfläche 21 grenzt seitlich an einen stegartigen, eine Führung bildenden Anschlag 17a an. In an embodiment shown in FIGS. 4 and 5 for a device for regrinding razor blades, a holder plate 16a has an inclined carrier surface 21 for receiving a grinding wheel 2a with a grinding surface 1a. The support surface 21 adjoins the side of a web-like, forming a guide stop 17a.

Claims

Patentansprüche: claims: 1. Vorrichtung zum Nachschärfen von Rasierklingen, mit einer Schleiffläche (1 ), über welche die Rasierklinge (7,8) im spitzen Winkel unter Nachziehen ihrer gegen die Schleiffläche (1 ) anliegenden Schneidkante (9,10) bewegbar ist, dadurch gekennzeichnet, dass die Schleiffläche (1) durch ein Schleifmaterial mit einem maximalen Schleifkorndurchmesser kleiner 6 μm gebildet ist.1. A device for re-sharpening razor blades, with a grinding surface (1) over which the razor blade (7,8) at an acute angle by pulling their against the grinding surface (1) adjacent the cutting edge (9,10) is movable, characterized in that the grinding surface (1) is formed by an abrasive material having a maximum abrasive grain diameter of less than 6 μm. 2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der maximale Schleifkorndurchmesser kleiner 8 μm ist.2. Apparatus according to claim 1, characterized in that the maximum abrasive grain diameter is less than 8 microns. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der mittlere Schleifkorndurchmesser zwischen 1 ,5 und 2 μm liegt.3. Device according to claim 1 or 2, characterized in that the average abrasive grain diameter is between 1, 5 and 2 microns. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Rasierklinge (7,8) in einem Rasierkopf (3) eines Nassrasierapparates (5) gehalten ist, welcher einen länglichen, parallel im Abstand zu der Schneidkante (9,10) der Rasierklinge (7,8) verlaufenden Anschlag (11 ,12) aufweist.4. Device according to one of claims 1 to 3, characterized in that the razor blade (7,8) in a razor head (3) of a wet razor (5) is held, which an elongated, parallel spaced from the cutting edge (9,10 ) of the razor blade (7,8) extending stop (11, 12). 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der Rasierkopf (3) auf der dem Anschlag (11) gegenüberliegenden Seite einen weiteren solchen Anschlag (12) aufweist und die Schneid- kante (9,10) der Rasierklinge (7,8) über die durch die Anschläge (11 ,12) aufgespannte Ebene hinaus vorsteht.5. The device according to claim 4, characterized in that the razor head (3) on the stop (11) opposite side has another such stop (12) and the cutting edge (9,10) of the razor blade (7,8) projecting beyond the plane defined by the stops (11, 12). 6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Rasierkopf (3) des Nassrasierapparates (5) schwenkbeweglich um eine zur Schleiffläche (1 ) parallele Achse (6) mit einem Halteteil (4) des Nassrasierapparates (5) verbunden ist. 6. Device according to one of claims 1 to 5, characterized in that the razor head (3) of the wet razor (5) pivotally connected to a grinding surface (1) parallel axis (6) with a holding part (4) of the wet razor (5) is.
PCT/DE2008/001020 2007-06-18 2008-06-16 Device for resharpening razor blades Ceased WO2008154910A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710027885 DE102007027885A1 (en) 2007-06-18 2007-06-18 Device for re-sharpening razor blades
DE102007027885.5 2007-06-18

Publications (1)

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WO2008154910A1 true WO2008154910A1 (en) 2008-12-24

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PCT/DE2008/001020 Ceased WO2008154910A1 (en) 2007-06-18 2008-06-16 Device for resharpening razor blades

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048191A (en) * 1990-06-08 1991-09-17 The Gillette Company Razor blade technology
JP2003080443A (en) * 2001-09-06 2003-03-18 Sanwa Kenma Kogyo Kk Grinding stone for polishing and polishing tool
US20060099894A1 (en) * 2004-11-09 2006-05-11 Morita Andy K Multi-bladed razor cartridge sharpener

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH183749A (en) * 1936-06-17 1936-04-30 Anschuetz Paul Puller for double-edged razor blades.
DE202004003581U1 (en) 2004-03-08 2004-05-13 Neller, Stephan Device for sharpening razor blades

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048191A (en) * 1990-06-08 1991-09-17 The Gillette Company Razor blade technology
JP2003080443A (en) * 2001-09-06 2003-03-18 Sanwa Kenma Kogyo Kk Grinding stone for polishing and polishing tool
US20060099894A1 (en) * 2004-11-09 2006-05-11 Morita Andy K Multi-bladed razor cartridge sharpener

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