EP0066541B1 - Verfahren zur Herstellung einer mit flüssiger Tinte gespeisten Kugelschreiberspitze und dadurch hergestellte Spitze - Google Patents

Verfahren zur Herstellung einer mit flüssiger Tinte gespeisten Kugelschreiberspitze und dadurch hergestellte Spitze Download PDF

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Publication number
EP0066541B1
EP0066541B1 EP82810220A EP82810220A EP0066541B1 EP 0066541 B1 EP0066541 B1 EP 0066541B1 EP 82810220 A EP82810220 A EP 82810220A EP 82810220 A EP82810220 A EP 82810220A EP 0066541 B1 EP0066541 B1 EP 0066541B1
Authority
EP
European Patent Office
Prior art keywords
ball
tube
point
area
needle
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
EP82810220A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0066541A1 (de
Inventor
Werner Germann
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.)
Albe SA
Original Assignee
Albe SA
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 Albe SA filed Critical Albe SA
Priority to AT82810220T priority Critical patent/ATE15466T1/de
Publication of EP0066541A1 publication Critical patent/EP0066541A1/de
Application granted granted Critical
Publication of EP0066541B1 publication Critical patent/EP0066541B1/de
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
    • B43K1/00—Nibs; Writing-points
    • B43K1/08—Nibs; Writing-points with ball points; Balls or ball beds
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/4984—Retaining clearance for motion between assembled parts
    • Y10T29/49845—Retaining clearance for motion between assembled parts by deforming interlock
    • Y10T29/49853—Retaining clearance for motion between assembled parts by deforming interlock of sphere, i.e., ball, in socket
    • Y10T29/49854—Ball point pen making

Definitions

  • the invention relates to a tip for a ballpoint pen which is fed with liquid ink and a method for its production.
  • Pens with pasty ink are known. These have the disadvantage of often forming stains at the start of writing.
  • Felt-tip pens are also known, in which the liquid ink of the writing tip is delivered by means of a tampon or pad.
  • Ballpoint pens with liquid ink are also known (see, for example, CH-PS 351 188), in which the ink in the direction of the ball by means of a ball made of fiber material and then a pointed object made of fibers, which is encased by a non-porous tube , is delivered.
  • a ballpoint pen is known according to US Pat. No. 3,960,455, with a tip made of metal and for receiving two balls.
  • the paste-like ink is supplied in a conventional manner, i. H. without the use of a memory in the form of a lump and needle-shaped pen for the capillary supply of the ink up to the ball.
  • the tip consists of a tubular part with a strong wall and the same cross section throughout, which cross section corresponds to the diameter of the ball. The wall of the bearing point of the ball is not solidified and not reduced at the same time.
  • DE-PS 870 962 describes a ballpoint pen for liquid ink with warts as an attachment for the ball.
  • the path for supplying the ink to the ball from the container is very long.
  • the tip only has a diameter that corresponds to that of the ball.
  • the supply of liquid ink to the ball described in CH-PS 562 106 takes place through a long channel; the ball is also stored in a plastic tip.
  • the tip according to DE-OS 2 701 694 consists of plastic material.
  • the needle-shaped pin ends far away from the ball.
  • the accumulation of ink also forms here. The risk of air being sucked in and consequently the ink supply to the ball being suspended is very great.
  • DE-OS 3000214 describes a tip with a tubular part made of metal, which is generally cylindrical and always made with the same cross-section.
  • the bearing of the ball is not solidified and is also designed with a reduced wall.
  • the feed channel corresponds to the diameter of the ball and is therefore extremely small, in such a way that it is impossible to feed the ink by means of a fibrous pen up to very close to the ball.
  • the object of the invention is a tip for ballpoint pens of the latter type, in which these disadvantages are prevented, such as a method for their production.
  • the tip is characterized by the characterizing part of the first claim, the method by the characterizing part of claim 7.
  • the tip is obtained from a tube known commercially as a "micro-tube” and used, for example, for the manufacture of hollow needles for syringes, catheters and the like. Like. Finds use.
  • This type of pipe is obtained from a metal strip, in particular from rust-resistant rolled steel, which is rolled up and welded in the longitudinal direction.
  • the thickness of the band is about 0.1 mm and the inside diameter of the raw tube available on the market is about 1 mm.
  • Fig. 1 shows schematically the tip of a ballpoint pen fed with liquid ink according to the invention. 1 shows the outer cylindrical body with the taper 1 'on the side of the ball.
  • the body 1 contains a small cylinder or pad 2 made of felt or spongy material of a known type, which has the task of an ink reservoir.
  • the ink is of the type found in conventional fountain pens, with the fluidity not particularly dependent on the temperature differences can be influenced.
  • a cylindrical or needle-shaped part 3 which consists of fibers made of plastic or of equal material, is introduced in a force-locking manner.
  • This also has a circular cross section, the end region 3 'of which is preferably designed with a reduced circular cross section in the direction of the ball.
  • the tip 4 provided with ball 5 is introduced into the tapered front end region 1 'of the body 1.
  • the ball is fed with the ink sucked up by the bulk 2 by means of the needle-shaped part 3 by capillarity.
  • the needle-shaped part 3 with its end region 3 ′ comes very close to the ball 5.
  • the distance "a" is very small, i. H. in such a way that the fibers are prevented from touching the ball or the fibers cannot get between the ball surface and the bearing seat S of the ball.
  • the distance "a" is smaller than 3/4 of the sphere diameter, however, by 1/4 is larger than the ball.
  • the end face 3 "of the needle-shaped part 3, i.e. the surface which causes a plurality of liquid filaments to flow out of the needle-shaped part, is thus brought into the seat S of the ball, the latter seat of which will be explained in more detail below.
  • the inside diameter d of the end region 3 'of the needle-shaped part 3 is chosen to be as large as possible with respect to the ball diameter.
  • the diameter of the needle-shaped part is also designed to be as large as possible.
  • the path that the fluid travels in the needle-shaped part is advantageously chosen to be short.
  • the needle-shaped part 3 thus fulfills a very important task.
  • the features of its shape and the material used to manufacture it are chosen so that the ink is continuously supplied to the ball in the required amount, according to the intensity of writing.
  • the deformation work in particular with regard to the front part of the tube, apart from the production of the inside diameter required for receiving the ball, also a consolidation and a reduction in the original wall thickness in order to facilitate the insertion and the elastic yielding required for the ball to snap into place to ensure the edge area. This prevents premature wear of the entire ball bearing surface by giving the material the required hardness.
  • the number of indentations 6 as a support, which form the seat S for the ball 5, is advantageously 3, 4 or 5, and this depends on the size of the ball diameter. If, for example, the ball diameter is greater than 0.6 mm, there are five indentations, while if the diameter is less than 0.8 mm, the number of indentations will be limited to four, in the limit case to three.
  • the tool known as “drilling”, the use of which for cold forming is already known in numerous branches of industry, comprises (FIG. 3) a cylinder jacket 7 with a shank. Within the jacket 7, three rollers 7 'are arranged rotatably about its own axis and parallel to the axis of the cylinder, which in turn press against the deformed wall of the tube A.
  • FIG. 4 shows, with reference to FIG. 2h, on a larger scale how the end region of the front part A 'of the tube is brought to an exact dimension again after the seat S has been carried out.
  • annular holder N In order to realize the annular holder N (FIG. 5), in addition to a pin 10 which is concentric with respect to the axis of the tube and at the same time to the axis of the seat S, an outer “triplet” is provided. Its outer rollers 11 have a groove 12 for bending the annular edge inwards, by as small a radial dimension as possible for insertion, by snapping the ball 5 d. H. by elastic yielding of the edge is required.
  • the tool shown on a larger scale in FIG. 6 is used to produce the seat S for the ball 5 (FIG. 2g).
  • a tube A axially arranged to the tool can be seen and, in a vertical plane, two coaxially arranged punch units 13.
  • Each unit 13 comprises a hollow body 14 which is tapered at the front and close to the axis of the tool.
  • the additional taper 15 'of a bush 15 presses against the taper 14', which is coaxial with the aforementioned tip 4 and is detachably fastened in the central bore 16.
  • the purpose of the socket 15 is to determine the common position of the units 13 in a plane perpendicular to the axis of the tube A.
  • a stamp 17 with a tapered front part 17 ' is axially displaceable in the hollow body 14.
  • the opposite, outer end 17 "of the punch has a larger diameter than the shaft in order to guide it axially and to form a support for the prestressed cylindrical spring.
  • the outer end 17" also acts as a tappet and is acted upon by the conical surface 19.
  • the conical surface 19 belongs to the inner wall of a bushing 20 which can be moved coaxially with respect to the axis of the tip to be machined.
  • the conical end regions 21 'of two screws 21 act on the units 13. These are arranged parallel to the axis of the tool and are intended to align the corresponding axes of the units 13 so that they intersect with the axis of the tool.
  • a calibration plunger 22 penetrates into the Tube.
  • the depth of the indentations S and the displacement path of the plunger 22 are limited by the corresponding displacements Z and Z ′ carried out by the body C and by the bushing 20.
  • the pressure force K is exerted on the body C; the body C and the sleeve 20 are in turn biased by the springs 23 and 24.

Landscapes

  • Pens And Brushes (AREA)
  • Coating Apparatus (AREA)
EP82810220A 1981-06-01 1982-05-21 Verfahren zur Herstellung einer mit flüssiger Tinte gespeisten Kugelschreiberspitze und dadurch hergestellte Spitze Expired EP0066541B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82810220T ATE15466T1 (de) 1981-06-01 1982-05-21 Verfahren zur herstellung einer mit fluessiger tinte gespeisten kugelschreiberspitze und dadurch hergestellte spitze.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3580/81 1981-06-01
CH3580/81A CH671736A5 (es) 1981-06-01 1981-06-01

Publications (2)

Publication Number Publication Date
EP0066541A1 EP0066541A1 (de) 1982-12-08
EP0066541B1 true EP0066541B1 (de) 1985-09-11

Family

ID=4259057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810220A Expired EP0066541B1 (de) 1981-06-01 1982-05-21 Verfahren zur Herstellung einer mit flüssiger Tinte gespeisten Kugelschreiberspitze und dadurch hergestellte Spitze

Country Status (6)

Country Link
US (1) US4789263A (es)
EP (1) EP0066541B1 (es)
JP (1) JPS57203598A (es)
AT (1) ATE15466T1 (es)
CH (1) CH671736A5 (es)
DE (1) DE3266151D1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3601676A1 (de) * 1986-01-21 1987-07-23 Rudi Hutt Schreibspitze und verfahren zu ihrer herstellung

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5887097A (ja) * 1981-11-19 1983-05-24 ぺんてる株式会社 パイプ式ボ−ルペンのチツプ成形方法
JPS59143693A (ja) * 1983-02-04 1984-08-17 三菱鉛筆株式会社 ボ−ルペンチツプの製造方法
JPS61160298A (ja) * 1985-01-09 1986-07-19 三菱鉛筆株式会社 ボ−ルペンチツプの製造方法
US5383901A (en) * 1993-10-18 1995-01-24 Ethicon, Inc. Blunt point needles
TW345547B (en) * 1994-04-29 1998-11-21 Pilot Ink Co Ltd Ballpoint pen tip, ballpoint pen tip manufacturing method, and ballpoint pen using the same
KR20010048838A (ko) * 1999-11-30 2001-06-15 김충경 필기구용 팁 및 그 제조방법
JP2001310581A (ja) 2000-04-28 2001-11-06 Pilot Ink Co Ltd ボールペンチップ
EP1329337A1 (de) * 2002-01-17 2003-07-23 Schächter, Friedrich Werkzeug zur Herstellung von Kugelschreiberspitzen
EP1658897A1 (en) 2004-11-22 2006-05-24 Roche Diagnostics GmbH Bent microfluidic device
CN104551570A (zh) * 2015-01-13 2015-04-29 林大喜 一种670笔头加工方法及基于该方法制成的670笔头
CN113074226B (zh) * 2021-03-18 2022-10-25 江西省永智制笔有限公司 一种动力头

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE483701A (es) * 1948-07-15
BE514617A (es) * 1951-10-05
US2834321A (en) * 1954-11-09 1958-05-13 Duefrene George Ball-type writing tip
CH383211A (de) * 1960-06-22 1964-10-15 Kahn David Inc Verfahren zur Herstellung einer Schreibspitze eines Kugelschreibers und nach dem Verfahren hergestellte Schreibspitze
CH383828A (it) * 1962-04-05 1964-10-31 Real Patentauswertungs Anstalt Procedimento per la fabbricazione di puntine per penne a sfera
GB1029391A (en) * 1962-10-01 1966-05-11 Francesco Mazzier Improvements in or relating to the manufacture of writing points for ball pens
US3162941A (en) * 1963-01-04 1964-12-29 Cross Co A T Method of making ball point writing instrument
CH436032A (it) * 1966-05-31 1967-05-15 Real Patentauswertungs Anstalt Macchina per lo stampaggio di punte per penne a sfera e di altri oggetti partendo da una striscia o da un filo metallico
GB1139038A (en) * 1966-08-31 1969-01-08 Dainihon Bungu Kabushiki Kaish Aqueous-ink ball-point pen
CH562106A5 (es) * 1973-01-19 1975-05-30 Tokyo Hat
US3966336A (en) * 1974-05-20 1976-06-29 The Gillette Company Ball type marker construction which eliminates stick-slip phenomena
JPS5412410Y2 (es) * 1975-12-10 1979-05-31
GB2065565B (en) * 1979-12-21 1983-07-20 Pilot Ink Co Ltd Ball-point pen tip and ball-point pen provided with same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3601676A1 (de) * 1986-01-21 1987-07-23 Rudi Hutt Schreibspitze und verfahren zu ihrer herstellung

Also Published As

Publication number Publication date
JPH0258014B2 (es) 1990-12-06
JPS57203598A (en) 1982-12-13
EP0066541A1 (de) 1982-12-08
DE3266151D1 (en) 1985-10-17
ATE15466T1 (de) 1985-09-15
CH671736A5 (es) 1989-09-29
US4789263A (en) 1988-12-06

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