EP0243691A1 - 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
EP0243691A1
EP0243691A1 EP87104545A EP87104545A EP0243691A1 EP 0243691 A1 EP0243691 A1 EP 0243691A1 EP 87104545 A EP87104545 A EP 87104545A EP 87104545 A EP87104545 A EP 87104545A EP 0243691 A1 EP0243691 A1 EP 0243691A1
Authority
EP
European Patent Office
Prior art keywords
wick
blank
cutting
notches
cylindrical
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
Application number
EP87104545A
Other languages
German (de)
English (en)
Other versions
EP0243691B1 (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 GmbH
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, which is 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 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 direction of the cut to the Wick blank are resiliently pressed. At least while the wick blank is sliding past one cutting edge of the double drag cutting edges in engagement, 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 prism guide, displaceable 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. L.l - l.3 consists of a feed station l 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 step of a cutting tool 6 shown in FIG Entrance of the mounting 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 are in the right Angles run 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 shown in FIG second cutting stage.
  • 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 11, 12, which can be moved relative to one another perpendicular to the plane of the drawing. With their surfaces extending between the edges B, C, the plates 11, 12 lie on top of one another. The spacing of the edges B, C corresponds to the spacing of the notches 9 in the wick blank 3.
  • the plates 11, 12 are provided with receiving bores 13, 14, which are in a coaxial position when the wick blank 3 is fed.
  • the wick blank 3 is replaced by a Before the cutting process, the transport device is pushed into the receiving bores l3, l4 until the edges B, C are approximately in the center of the notches 9.
  • the plates 11, 12 are then moved 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 l6, on which the two writing wicks l5 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 cutting process places high demands on the accuracy of the cutting 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 l8 protrude into the guide channel on a side lying transverse to the course of the cut and are fastened to a displaceable guide element l9 which is acted upon by a compression spring 20 in the direction of the guide channel l7.
  • the guide element l9 is secured against rotation with a prismatic guide 2l and holds the double dragging blades l8 in a parallel alignment to the longitudinal axis of the guide channel l7.
  • the guide element 19 has a stop 22, through 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 l7, then it meets the rounded rounded double cutting edges l8 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 constant contact of at least one of the two double drag cutting edges l8 on the lateral surface of the wick blank 3.
  • the double drag cutting edges l8 aligned 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 sequence of cuts, so that a precise fit coincides the cutting surfaces of the first and second cutting sequence is guaranteed.
  • 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)
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 true EP0243691A1 (fr) 1987-11-04
EP0243691B1 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
CN102762125B (zh) 2010-02-26 2015-06-03 高露洁-棕榄公司 用于口腔护理器具的流体输送系统
US8398326B2 (en) 2010-03-04 2013-03-19 Colgate-Palmolive Company Fluid dispensing oral care implement
KR20130128009A (ko) 2011-03-09 2013-11-25 콜게이트-파아므올리브캄파니 치간 세척기구
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402003A1 (de) * 1974-01-16 1975-07-17 Hutt Sondermaschbau Rudi Vorrichtung zum durchtrennen von schreibspitzen
FR2272849A1 (en) * 1974-05-27 1975-12-26 Pelikan Werke Wagner Guenther Mfg. wicks for felt tip pens - by dividing wick sharpened at both ends into two symmetrically equal parts

Family Cites Families (8)

* 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
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402003A1 (de) * 1974-01-16 1975-07-17 Hutt Sondermaschbau Rudi Vorrichtung zum durchtrennen von schreibspitzen
FR2272849A1 (en) * 1974-05-27 1975-12-26 Pelikan Werke Wagner Guenther Mfg. wicks for felt tip pens - by dividing wick sharpened at both ends into two symmetrically equal parts

Also Published As

Publication number Publication date
DE3760381D1 (en) 1989-09-07
EP0243691B1 (fr) 1989-08-02
ATE45123T1 (de) 1989-08-15
DE3614230C1 (de) 1987-08-27
ES2009814B3 (es) 1989-10-16
US4733586A (en) 1988-03-29
GR3000156T3 (en) 1990-12-31

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