EP0243691B1 - Installation et procédé de fabrication de mèches d'écriture - Google Patents

Installation et procédé de fabrication de mèches d'écriture Download PDF

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Publication number
EP0243691B1
EP0243691B1 EP19870104545 EP87104545A EP0243691B1 EP 0243691 B1 EP0243691 B1 EP 0243691B1 EP 19870104545 EP19870104545 EP 19870104545 EP 87104545 A EP87104545 A EP 87104545A EP 0243691 B1 EP0243691 B1 EP 0243691B1
Authority
EP
European Patent Office
Prior art keywords
semi
cutting
tip member
wick
finished tip
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
Application number
EP19870104545
Other languages
German (de)
English (en)
Other versions
EP0243691A1 (fr
Inventor
Christoph Manusch
Günter Scholz
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.)
Pelikan International Corp Bhd
Original Assignee
Pelikan 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 Pelikan GmbH filed Critical Pelikan GmbH
Priority to AT87104545T priority Critical patent/ATE45123T1/de
Publication of EP0243691A1 publication Critical patent/EP0243691A1/fr
Application granted granted Critical
Publication of EP0243691B1 publication Critical patent/EP0243691B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K15/00—Assembling, finishing, or repairing pens
    • B43K15/02—Automatic machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K1/00—Nibs; Writing-points
    • B43K1/12—Writing-points comprising fibres; Felt pads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49789—Obtaining plural product pieces from unitary workpiece
    • Y10T29/49794—Dividing on common outline
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49995—Shaping one-piece blank by removing material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/02—Other than completely through work thickness
    • Y10T83/0304—Grooving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/404—By means to misalign aligned apertured tools
    • Y10T83/412—Rectilinear relative movement only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/727—With means to guide moving work
    • Y10T83/744—Plural guide elements

Definitions

  • the invention relates to a process for the production of writing wicks for capillary writing instruments by dividing a cylindrical or prismatic wick blank sharpened on both sides into two point-symmetrically identical parts, the dividing line having a central section which runs essentially along the longitudinal axis of the wick blank and end sections which run essentially at an obtuse angle.
  • Writing wicks which are produced by such a method are distinguished by a large contact area between the wick and the ink reservoir, so that there is a particularly good ink flow. Furthermore, by overlapping the step-like cut, two single wicks can be obtained from a wick blank, the total length of which is significantly greater than the length of the wick blank.
  • the object of the invention is to avoid these disadvantages of the known method and to provide a manufacturing method of the type mentioned which enables a cheap and easily reworkable shape of the cutting tools and is characterized by a higher dimensional accuracy and better cut quality.
  • This object is achieved in that in a first cutting step to form the end sections of the dividing line diametrically arranged notches are cut in the wick blank and in a second cutting step by a straight cut forming the central section of the dividing line, which extends from one notch to the other , the two parts are separated.
  • the method according to the invention has the advantage that simple and also standardized cutting punches can be used to carry out the inexpensive step cut, which can be regrind in a simple manner and with little expenditure of time and only have to be readjusted from time to time. Furthermore, the pitch of the cutting punches for generating the notch cuts remains unchanged even during regrinding, so that there is high dimensional accuracy and cutting quality.
  • the shape of the notch cuts can be chosen arbitrarily. According to the invention, however, it is proposed that the cut surfaces of the notches be cylindrical. This has the advantage that the production of the cutting tool for the first cutting stage is particularly simple.
  • the diameter of the cylindrical cut surfaces is preferably chosen to be equal to or larger than the diameter of the wick blank, so that there is a sufficiently obtuse-angled course of the end sections of the dividing line.
  • the depth of the notches is preferably equal to or greater than half the diameter of the wick blank.
  • the invention also provides a simple device with which the method according to the invention can be carried out.
  • the device according to the invention consists in that the cutting tool for the first cutting stage has a receiving bore with a cross-section that is adapted to the wick blank, into which the wick blank can be inserted from a feed shaft and that cylindrical cutting punches are provided parallel to one another, the movement paths of which run transversely to the receiving bore and the receiving bore penetrate about half of their cross-section at diametrical points.
  • the cutting device according to the invention is simple to manufacture and insensitive to wear. The stamps can be easily regrinded on their end faces, the position of the cut surfaces in the cutting tool remaining unchanged. Both punches perform their cutting movements synchronously, which balances the cutting forces on the workpiece and prevents the workpiece from rotating during the cutting process.
  • the trailing channel provides double trailing cutting edges which extend in the cutting direction to the Wick blank are resiliently pressed. While the wick blank is sliding past, at least one cutting edge of the double drag cutting edges is engaged, regardless of whether one or the other notch slides along the double drag cutting edges so that the wick blank cannot rotate.
  • the double dragging cutters can be arranged on a guide element which is non-rotatably mounted in a prismatic guide, can be displaced perpendicularly to the guide channel and is actuated by a compression spring, the mobility of which in the direction of the guide channel is limited by a stop.
  • the cutting tool for the second cutting stage preferably consists of two overlapping cutting plates, through which a receiving bore for the wick blank runs such that its central axis lies in the plane of contact of the overlapping plate sections, the length of the overlapping plate sections being approximately equal to the distance of the notches in the Wick blank is.
  • This cutting tool for the second cutting step is also easy to manufacture and maintain, since only a straight cutting edge is effective, the axial length of which is not subject to narrow dimensional tolerances.
  • the cutting device shown in FIGS. 1.1 - 1.3 consists of a feed station I with a feed shaft 2 through which the wick blanks 3 reach the entrance of the receiving bore 4.
  • a transport plunger 5 Opposite the receiving bore 4 is a transport plunger 5 which, when actuated by a device (not shown), is displaced towards the receiving bore 4 and thereby pushes the lowermost wick blank into the receiving bore 4.
  • the inserted wick blank 3 is in the position of the first cutting stage of a cutting tool 6 shown in FIG. 1.2.
  • the transport plunger 5 then returns to its starting position, so that the next wick blank 3 is in the position in front of the entrance of the Receiving hole 4 can slip.
  • Two cylindrical cutting punches 7 are arranged in the cutting tool 6, the diameter of which corresponds approximately to the diameter of the wick blank 3.
  • the cutting punches 7 are guided in bores 8 in the cutting tool 6, which run at right angles transversely to the receiving bore 4 and partially penetrate the receiving bore 4 on opposite sides.
  • the bores 8 are at a distance from one another in the longitudinal direction of the receiving bore 4, which corresponds to approximately one third of the length of the wick blank, and their central axes are tangential to the cylindrical surface formed by the wall of the receiving bore 4.
  • the two punches 7 are located when the wick blank 3 is inserted into the cutting tool 6 outside the receiving bore 4 and are then moved synchronously by a drive device to such an extent that they completely penetrate the receiving bore 4. Here, they cut approximately lenticular pieces from the wick blank 3 on opposite sides, so that two cylindrical notches 9 are formed in the wick blank 3 and the wick blank 3 is given the shape shown in FIG. 2.2.
  • the cutting punches 7 are moved back into their starting position and the wick blank 3 provided with the notches 9 is pushed out of the cutting tool 6 by the following wick blank into a guide channel, through which it leads to the cutting tool 10 of the second cutting stage shown in FIG. 1.3 reached.
  • the guide channel is provided with means described below, by which rotation of the notched wick blank is avoided.
  • the cutting tool 10 consists of two oppositely stepped plates II, 12, which are mutually movable perpendicular to the plane of the drawing. With their surfaces extending between the edges B, C, the plates 11, 12 lie one on top of the other. The distance between the edges B, C corresponds to the distance between the notches 9 in the wick blank 3.
  • the plates II, 12 are provided with receiving bores 13, 14, which are in a coaxial position to one another when the wick blank 3 is fed. The wick blank 3 is pushed into the receiving bores 13, 14 by a transport device before the cutting process until the edges B, C are approximately in the center of the notches 9.
  • the plates II, 12 are then displaced relative to one another by a drive device, as a result of which the notched wick blank 3 is separated from one another along the dividing line B - C, so that two writing wicks 15 of the shape shown in FIG. 2.3 are produced.
  • the separating surface 16, on which the two writing wicks 15 were connected to one another, is hatched for illustration in FIG. 2.3.
  • 3 - 6 show the possible variations for the geometric section with the method according to the invention.
  • the notches 9 were punched with a notch spacing diameter equal to the diameter of the wick blank 3 and a notch depth corresponding to half the wick diameter, the separating cut G, H running in the central axis of the wick blank 3.
  • this course of the cut places high demands on the accuracy of the cut and the positioning of the wick.
  • the oblique course of the separating cut I, K shown in FIG. 4 with the same design of the notches 9 results in the ends of the separating cut opening into the free spaces of the notches 9 even with dimensional deviations. Larger tolerances can therefore be permitted for the position of the wick in the tool and for the length of the wick, even without loss of quality.
  • FIG. 7 shows a device by means of which the wick blank is secured against rotation about its own longitudinal axis during transport from the cutting tool of the first cutting stage to the cutting tool of the second cutting stage.
  • the wick blank 3 provided with the notches 9 is pushed through a guide channel 17.
  • Double drag blades 18 protrude into the guide channel on a side lying transverse to the course of the cut and are fastened to a displaceable guide element 19 which is acted upon by a compression spring 20 in the direction of the guide channel 17.
  • the guide element 19 is secured against rotation by means of a prismatic guide 21 and holds the double dragging cutters 18 in parallel alignment with the longitudinal axis of the guide channel 17.
  • the guide element 19 has a stop 22, by means of which its movement in the direction of the guide channel is limited.
  • the notched wick blank 3 comes out of the cutting tool of the first cutting stage into the guide channel 17, it meets the rounded rounded double cutting edges 18 with the lateral rounding of its tip and presses them back against the force of the compression spring 20 to such an extent that it can slide past them.
  • the compression spring 20 ensures that at least one of the two double drag cutting edges 18 is in constant contact with the outer surface of the wick blank 3.
  • the double drag cutting blades 18 oriented in the sliding direction of the wick blank form a torsional resistance which prevents the wick blank from rotating about its longitudinal axis.
  • the wick blank 3 thus arrives in the same orientation in the cutting tool of the next cutting sequence, so that an exact fit of the cutting surfaces of the first and second cutting sequence is ensured.
  • a device according to FIG. 7 is only required for circular cylindrical wick blanks.
  • Other wick blanks with e.g. Egyptian or polygonal cross-sections can be secured against twisting in a correspondingly shaped bore.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Paper (AREA)
  • Pens And Brushes (AREA)

Claims (8)

1. Procédé de fabrication de mèches d'écriture pour appareils d'écriture capillaires par séparation d'une ébauche de mèche cylindrique ou prismatique appointée, des deux côtés, en deux parties à symétrie ponctuelle, où la ligne de séparation à partir d'une coupe médiane s'étend pour l'essentiel le long de l'axe longitudinal de l'ébauche de mèche et où pour l'essentiel les sections d'extrémité s'étendent à cet effet en forme de tronc de cône, caractérisé en ce que dans une première étape de découpage pour la formation de la ligne de séparation dans l'ébauche de mèche on découpe des entailles et en ce que dans une seconde étape de découpage par un découpage droit formant la section moyenne de la ligne de séparation qui va d'une entaille (9) à l'autre, on sépare l'ébauche de mèche.
2. Procédé selon la revendication 1, caractérisé en ce que les surfaces de coupe des entailles (9) sont cylindriques.
3. Procédé selon la revendication 2, caractérisé en ce que le diamètre des surfaces de coupe cylindriques est égal ou supérieur au diamètre de l'ébauche de mèche (3).
4. Procédé selon l'une des revendications précédentes, caractérisé en ce que la profondeur des entailles (9) est égale ou supérieure au rayon de l'ébauche de mèche (3).
5. Dispositif de mise en oeuvre du procédé selon l'une des revendications précédentes, caractérisé en ce que l'outil de coupe (6) de la première étape de découpage présente dans la section transversale un alésage de réception (4) adapté à l'ébauche de mèche (3), dans lequel l'ébauche de mèche (3) peut être introduite à partir d'un puits d'amenée (2) et en ce qu'on prévoit des poinçons de découpage (7) cylindriques parallèles entre eux, dont les trajectoires de déplacement s'étendent perpendiculairement à l'alésage de réception (4) et pénètrent dans deux directions diamétralement opposées approximativement jusqu'à la moitié de leur section transversale.
6. Dispositif selon la revendication 5, caractérisé en ce qu'on prévoit dans un canal de guidage (17) allant de l'outil de coupe (6) de la première étape de découpage à l'outil de coupe (10) de la seconde étape de découpage des doubles languettes découpées (18) s'étendant dans le sens longitudinal qui sont applicables par effet de ressort dans le sens de la coupe sur l'ébauche de mèche (3).
7. Dispositif selon la revendication 6, caractérisé en ce que les doubles languettes découpées (18) sont placées sur un élément de guidage (19) supporté de façon à ne pas pouvoir tourner dans un guidage prismatique (21), déplaçable perpendiculairement au canal de guidage (17) et appliqué par un ressort de pression (20) dont la possibilité de déplacement en direction du canal de guidage (17) est limité par une butée (22).
8. Dispositif selon l'une des revendications 5 à 7, caractérisé en ce que l'outil de coupe (10) de la seconde étape de découpage se compose de deux plaques (11, 12) se chevauchant à travers lesquelles s'étend un alésage de réception (13, 14) pour l'ébauche de mèche (3) de telle sorte que leur axe médian se situe dans le plan de contact des plaques se chevauchant et en ce que la longueur des sections de plaques se chevauchant en direction de l'alésage de réception (13, 14) est approximativement égale à l'intervalle des entailles (9) dans l'ébauche de mèche (3).
EP19870104545 1986-04-26 1987-03-27 Installation et procédé de fabrication de mèches d'écriture Expired EP0243691B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87104545T ATE45123T1 (de) 1986-04-26 1987-03-27 Verfahren zur herstellung von schreibdochten und vorrichtung zur durchfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3614230 1986-04-26
DE3614230A DE3614230C1 (de) 1986-04-26 1986-04-26 Verfahren zur Herstellung von Schreibdochten und Vorrichtung zur Durchfuehrung des Verfahrens

Publications (2)

Publication Number Publication Date
EP0243691A1 EP0243691A1 (fr) 1987-11-04
EP0243691B1 true EP0243691B1 (fr) 1989-08-02

Family

ID=6299631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870104545 Expired EP0243691B1 (fr) 1986-04-26 1987-03-27 Installation et procédé de fabrication de mèches d'écriture

Country Status (6)

Country Link
US (1) US4733586A (fr)
EP (1) EP0243691B1 (fr)
AT (1) ATE45123T1 (fr)
DE (2) DE3614230C1 (fr)
ES (1) ES2009814B3 (fr)
GR (1) GR3000156T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054948A (en) * 1989-08-01 1991-10-08 Terumo Kabushiki Kaisha Liquid applicator
DE4322832C2 (de) * 1993-04-05 1996-06-20 Schulte Kg Hammerwerk Aus Stahl geschmiedetes Pleuel
JP4456821B2 (ja) * 2002-10-04 2010-04-28 株式会社ティラド リング付きファンおよびその製造方法
US8517728B2 (en) 2007-01-24 2013-08-27 Colgate-Palmolive Company Oral care implement having fluid delivery system
KR101530504B1 (ko) 2010-02-26 2015-06-19 콜게이트-파아므올리브캄파니 구강 관리 기구를 위한 유체 배출 시스템
US8398326B2 (en) 2010-03-04 2013-03-19 Colgate-Palmolive Company Fluid dispensing oral care implement
EP2764844B1 (fr) 2011-03-09 2020-07-22 Colgate-Palmolive Company Dispositif de nettoyage interdentaire
EP2911554B1 (fr) 2012-10-26 2017-04-26 Colgate-Palmolive Company Accessoire de soin buccal
US11845104B1 (en) * 2023-02-04 2023-12-19 Eli Altaras Liquid solution twist pen method and devices

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US371312A (en) * 1887-10-11 Egbert geagey
US1356543A (en) * 1920-03-10 1920-10-26 Howard Hunt Pen Company C Manufacture of pens
US2463920A (en) * 1941-07-26 1949-03-08 Babson Bros Co Method of making milker nipples
US2748769A (en) * 1953-02-24 1956-06-05 Huber Jennie Hypodermic needle
US2957226A (en) * 1958-05-22 1960-10-25 Burndy Corp Method of manufacturing terminal lugs
GB1454197A (en) * 1973-07-17 1976-10-27 Hoesch Werke Ag Bearings
DE2402003C3 (de) * 1974-01-16 1980-09-25 Rudi Hutt Sondermaschinenbau, 7065 Winterbach Vorrichtung zum Durchtrennen von beidseitig angespitzten Schreibspitzen
DE2425500C3 (de) * 1974-05-27 1983-12-01 Pelikan Ag, 3000 Hannover Verfahren zur Herstellung von Schreibdochten
US4361174A (en) * 1980-09-18 1982-11-30 Gte Products Corporation Wire wafer fabricating process
DE3302963A1 (de) * 1983-01-29 1984-08-02 Pelikan Ag, 3000 Hannover Schreibgeraet fuer fluessige schreibmedien

Also Published As

Publication number Publication date
ES2009814B3 (es) 1989-10-16
DE3760381D1 (en) 1989-09-07
DE3614230C1 (de) 1987-08-27
ATE45123T1 (de) 1989-08-15
EP0243691A1 (fr) 1987-11-04
GR3000156T3 (en) 1990-12-31
US4733586A (en) 1988-03-29

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