EP1040016B1 - Machine a pointe avec tige - Google Patents

Machine a pointe avec tige Download PDF

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Publication number
EP1040016B1
EP1040016B1 EP98964450A EP98964450A EP1040016B1 EP 1040016 B1 EP1040016 B1 EP 1040016B1 EP 98964450 A EP98964450 A EP 98964450A EP 98964450 A EP98964450 A EP 98964450A EP 1040016 B1 EP1040016 B1 EP 1040016B1
Authority
EP
European Patent Office
Prior art keywords
chuck
clamping
retaining
tongues
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.)
Expired - Lifetime
Application number
EP98964450A
Other languages
German (de)
English (en)
Other versions
EP1040016A1 (fr
Inventor
Thomas Schultheiss
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.)
Wilhelm Dahle Buero-Technik & Co KG GmbH
Original Assignee
Wilhelm Dahle Buero-Technik & Co KG GmbH
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 Wilhelm Dahle Buero-Technik & Co KG GmbH filed Critical Wilhelm Dahle Buero-Technik & Co KG GmbH
Publication of EP1040016A1 publication Critical patent/EP1040016A1/fr
Application granted granted Critical
Publication of EP1040016B1 publication Critical patent/EP1040016B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L23/00—Sharpeners for pencils or leads
    • B43L23/02—Sharpeners for pencils or leads with gearing
    • B43L23/04—Sharpeners for pencils or leads with gearing with cranked handles

Definitions

  • the invention relates to a pencil sharpener with the features of the preamble of Claim 1. If here from a "pin" than from the chuck of the pointed machine too exciting workpiece, not only pencils or crayons, but also kohl pencils, mines or similar pen-shaped objects.
  • Pen sharpeners hold the pen in the chuck while the milling cutter in the area around the pen tip driven around it.
  • the rotary drive is done by motor or by hand.
  • the chuck is within an in Axial direction of the chuck housing on which the milling mechanism containing machine housing slidably guided in the axial direction.
  • the Chuck housing is against the spring tension in the axial direction Milling cutter acted in such a way that an automatic axial infeed of the pen tip against the rotating plane of the rotating milling cutters takes place.
  • the chuck of the known pointed machines is designed in many parts and therefore technically complex.
  • the retaining tongues are individually around axes that are fixed to the housing pivoted on the chuck housing. Your outer actuating ends are drive-wise with a separate, surrounding the chuck axis like a ring Holding frame connected, which is effective against one in its circumferential direction Torsion spring swiveling around the chuck axis within the chuck housing is stored. By swiveling the holding frame against the pressure of the torsion spring the holding ends of the holding tongues open the chuck and the pin is simple removable.
  • the torsion spring loading of the holding frame in the circumferential direction causes the holding ends of the holding tongues to pivot back automatically into their Clamping position in relation to an inserted pin or in a near-axis Closed position.
  • a similar chuck for a pencil sharpener is from DE-AS 1 063 934 known. Instead of a torsion spring, however, there are several in the circumferential direction extending coil springs are provided to act on the holding frame.
  • DE-PS 472 725 a further chuck for a pencil sharpening machine is known.
  • the chuck is formed by several levers that are fixed to the housing Axles are pivotally mounted and approximately tangential to an implementation for the pen are guided. In the area of the bushing, each lever carries a clamping jaw, which protrudes into the bushing when the chuck is in the closed position.
  • the levers reach with their outer ends into sections of a pivotable Chuck cover so that when turning the cover by spring force jaws held together are pulled apart approximately radially.
  • these known chucks are disadvantageously formed in many parts and thereby complex manufacturing technology.
  • the invention has for its object a pointed machine of the aforementioned Kind of simplify construction. This object is solved by claim 1. What about State of the art through a multi-part training with a rotary or Sliding mobility of these parts against each other is achieved Invention with only the holding frame and neither rotatable nor slidably fixed holding tongues. A separate, effective in the circumferential direction Torsion spring is not required because its effectiveness is replaced by the one specified in Art rod springs clamped on one side on the holding frame and their holding tongues Attachment to fixed stops of the chuck housing.
  • the use of polyoxymethylene (POM) as Material for the one-piece chuck according to claim 3 grants a long-term retention of the elasticity of the retaining tongues.
  • An arrangement according to claim 4 enables a particularly simple assembly of the Chuck, as this is not - as usual - under tension in the Chuck housing must be introduced.
  • Claim 8 allows a great design freedom for the holding frame, without the Freedom of shape, the spring behavior and the pivoting mobility of the To influence holding tongues. This is particularly advantageous because the retaining tabs on Holding frame fixed and in particular are made in one piece with it.
  • the spring characteristic of a retaining tongue can be easily according to claim 9 by the Dimensioning their cross-sectional area in the individual longitudinal areas of the retaining tongue to adjust.
  • claim 10 is an improvement in the grip of the holding ends Retaining tongues ensured.
  • Claim 12 and / or 13 allow a further Simplification of the manufacturing of the pointed machine.
  • chuck 1 and 2 comprises a chuck 1, which in a part designed as a trough-shaped outer shell 2
  • Chuck housing 2,3 is mounted about a chuck axis 4.
  • the chuck 1 and for clarity the outer shell 2 are individually in FIGS. 3 and 5 and in FIG Fig. 6 shown.
  • an inner shell 3, not shown in Fig. 1, the Chuck housing 2.3 completed approximately in the drawing plane.
  • the terms radial and axially are used in relation to the chuck axis 4.
  • the chuck 1 is supported on the inner wall 5 of the outer shell 2 attached axial projections 6, which in the peripheral region of a substantially Disc-shaped holding frame 7 of the chuck 1 rest. Transferred to the Contact surfaces of the axial projections 6 are in the peripheral region of the holding frame 7 this approximately rod-shaped retaining tongues 8 rectangular cross-section formed.
  • their Cross-sectional height i.e. its expansion in the axial direction tapers Retaining tongue 8 wedge-like, as can be seen from Fig. 6b.
  • the circumferentially Widened, radially inner holding ends 10 of the holding tongues 8 are in FIG. 1 shown - idle state of the chuck 1 closely spaced from each other. to The radially inward-facing surfaces of the Retaining tongues 8 are provided with retaining grooves 11.
  • the holding frame 7 is mounted by means of the axial projections 6 such that it is in one limited angular interval about the chuck axis 4 is pivotable.
  • the opening lever 13 is at the Outer shell 2 externally attached projection as counter support 14 in Swing direction with a distance opposite.
  • each retaining tongue 8 lies relaxed on one of the inner wall 5 of the Outer shell 2 protruding stop 15.
  • the stop 15 is positioned in such a way that he has the holding tongue 8 near the holding end 10 at the pivoting direction touching surface.
  • a pin to be sharpened can now be inserted both in the chuck housing 2, 3 and bushing 16 provided in the holding frame 7 is inserted into the chuck 1 become.
  • the chuck 1 pivots, driven by the restoring force of the curved retaining tongues 8, automatically in Back towards its closed position.
  • the inserted pin is removed from the striving holding ends 10 coaxial to the chuck axis 4 fixed and rotatable clamped with respect to the chuck 1.
  • the assembly process takes place, as indicated in FIG. 6: First, the chuck 1 inserted into the outer shell 2 along the dashed lines and according to FIG. 1. Then it is closed by the inner shell 3.
  • the inner shell 3 is in accordance with Fig. 7 designed substantially flat and carries a network of on its inner wall 17 Stiffening ribs 18.
  • the connection between the outer 2 and inner shell 3 is thereby produced via a snap connection 19 designed in a conventional manner.
  • the chuck housing 2, 3 is connected to an unillustrated, the machine housing containing the milling mechanism is guided axially displaceably.
  • This Axial guide 20 is integrally formed on the outer wall 21 of the inner shell 3.

Landscapes

  • Drawing Aids And Blackboards (AREA)
  • Jigs For Machine Tools (AREA)
  • Clamps And Clips (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (7)

  1. Machine taille-crayon comportant un mandrin de serrage (1) serrant un crayon à tailler coaxialement à un axe (4) du mandrin de serrage au moyen de languettes de retenue radiales (8), ledit mandrin étant monté dans un boítier de mandrin de serrage (2, 3), les languettes de retenue (8) du mandrin de serrage (1) pouvant être détachées conjointement du crayon par un mouvement de pivotement à l'encontre de la pression d'un ressort, caractérisée en ce que les languettes de retenue (8) sont fixées rigidement par une extrémité respective sur un cadre de retenue (7) entourant approximativement à la manière d'un anneau et à distance l'axe (4) du mandrin de serrage et susceptible de pivoter autour de l'axe (4) du mandrin de serrage, en ce que le boítier (2, 3) du mandrin de serrage porte des butées (15) qui font saillie axialement dans la course de pivotement des languettes de retenue (8), qui, lors d'un pivotement du cadre de retenue (7) par rapport au boítier (2, 3) du mandrin de serrage, font fléchir élastiquement les languettes de retenue (8) à la manière de ressorts à lame serrés unilatéralement, hors de leur position de serrage, de telle sorte que leurs extrémités de retenue (10) sont déviées vers l'extérieur et libèrent le crayon.
  2. Machine taille-crayon selon la revendication 1, caractérisée en ce que les languettes de retenue (8) et le cadre de retenue (7) sont réalisés d'un seul tenant en matière plastique élastique.
  3. Machine taille-crayon selon la revendication 2, caractérisée en ce que le cadre de retenue (7) et les languettes de retenue (8) sont constitués en polyoxyméthylène.
  4. Machine taille-crayon selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le mandrin de serrage (1) est logé, dans l'état de repos avec des languettes de retenue (8) détendues, dans un guidage de pivotement du boítier (2, 3) du mandrin de serrage.
  5. Machine taille-crayon selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le cadre de retenue (7) forme approximativement un anneau circulaire et est monté mobile en rotation dans une zone angulaire limitée autour de l'axe (4) du mandrin de serrage.
  6. Machine taille-crayon selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le cadre de retenue (7) est pourvu, pour son actionnement en pivotement, d'un levier d'ouverture (13) qui fait saillie sensiblement radialement hors du boítier du mandrin de serrage (1).
  7. Machine taille-crayon selon la revendication 6, caractérisée en ce qu'une saillie du boítier faisant office de contre-butée (14) pour l'actionnement en pivotement est agencée, à distance périphérique du levier d'ouverture (13), du côté extérieur sur le boítier (2, 3) du mandrin de serrage.
EP98964450A 1997-12-18 1998-11-26 Machine a pointe avec tige Expired - Lifetime EP1040016B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19756399 1997-12-18
DE19756399A DE19756399C1 (de) 1997-12-18 1997-12-18 Stiftspitzmaschine
PCT/EP1998/007649 WO1999032306A1 (fr) 1997-12-18 1998-11-26 Machine a pointe avec tige

Publications (2)

Publication Number Publication Date
EP1040016A1 EP1040016A1 (fr) 2000-10-04
EP1040016B1 true EP1040016B1 (fr) 2002-09-18

Family

ID=7852441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98964450A Expired - Lifetime EP1040016B1 (fr) 1997-12-18 1998-11-26 Machine a pointe avec tige

Country Status (7)

Country Link
US (1) US6334475B1 (fr)
EP (1) EP1040016B1 (fr)
JP (1) JP4350304B2 (fr)
CN (1) CN1116992C (fr)
DE (1) DE19756399C1 (fr)
ES (1) ES2182393T3 (fr)
WO (1) WO1999032306A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI819427B (zh) * 2021-12-06 2023-10-21 堡勝企業股份有限公司 進筆機構及具有其的削筆機

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6886614B2 (en) 2002-05-16 2005-05-03 Hunt Holdings, Inc. Pencil sharpener
DE10355194B4 (de) * 2003-11-26 2006-01-26 Dahle Bürotechnik Gmbh Stiftspitzmaschine
DE202007010551U1 (de) * 2007-07-28 2008-12-11 Dahle Bürotechnik Gmbh Stiftspitzmaschine
US8016004B2 (en) * 2008-10-01 2011-09-13 Anwar Farooq More silent and robust electric pencil sharpener
US20130147104A1 (en) * 2010-08-30 2013-06-13 Carl Mfg. Co., Ltd. Pencil sharpener
TW201542424A (zh) * 2014-05-09 2015-11-16 Sdi Corp 自動開蓋裝置
CN104354507B (zh) * 2014-10-21 2016-05-25 顺德工业(江苏)有限公司 削笔机进笔孔的挡屑装置
CN106738091B (zh) * 2016-12-20 2019-01-15 重庆名风家俱有限公司 削尖机
CN110333365A (zh) * 2019-07-24 2019-10-15 黄河科技学院 免疫分析检测中用运移反应杯的杯条
CN112248697B (zh) * 2020-10-15 2021-12-24 云阳县凤鸣镇凤鸣小学 一种用于文具用品的卷笔刀
DE102020132446A1 (de) * 2020-12-07 2022-06-09 Eisen Gmbh Vorrichtung zum Anspitzen wenigstens eines Stifts
US11273666B1 (en) * 2021-04-20 2022-03-15 Samir Moufawad Moufawad Pencil sharpener
CN116766814B (zh) * 2022-10-27 2024-09-20 得力集团有限公司 一种用于削笔机的夹笔机构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE472725C (de) * 1929-03-11 Weiss Johann Spannfutter fuer Schreibstiftspitzmaschinen
DE396839C (de) * 1923-05-03 1924-06-23 Emil Grantzow Spannfutter mit in Fuehrungskurven laufenden Mitnehmern
CH181271A (de) * 1935-03-20 1935-12-15 Injecta Ag Bleistiftspitzmaschine.
DE702445C (de) * 1938-09-02 1941-02-07 A W Faber Castell Bleistift Fa Spannvorrichtung fuer Bleistiftspitzmaschinen
DE808425C (de) * 1949-04-07 1951-07-16 Ernst Plank Fa Spannfutter fuer Spitzmaschinen fuer Schreibstifte
DE1063934B (de) * 1959-03-13 1959-08-20 Faber Castell A W Einspannvorrichtung fuer Bleistiftspitzmaschinen
US3227140A (en) * 1964-06-05 1966-01-04 Apsco Products Inc Pencil sharpener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI819427B (zh) * 2021-12-06 2023-10-21 堡勝企業股份有限公司 進筆機構及具有其的削筆機

Also Published As

Publication number Publication date
ES2182393T3 (es) 2003-03-01
WO1999032306A1 (fr) 1999-07-01
JP4350304B2 (ja) 2009-10-21
DE19756399C1 (de) 1999-01-14
EP1040016A1 (fr) 2000-10-04
CN1116992C (zh) 2003-08-06
US6334475B1 (en) 2002-01-01
CN1282297A (zh) 2001-01-31
JP2001526139A (ja) 2001-12-18

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