EP0066541A1 - Méthode pour la production de pointe à bille pour stylo à encre aqueuse et pointe produite selon cette méthode - Google Patents

Méthode pour la production de pointe à bille pour stylo à encre aqueuse et pointe produite selon cette méthode Download PDF

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Publication number
EP0066541A1
EP0066541A1 EP82810220A EP82810220A EP0066541A1 EP 0066541 A1 EP0066541 A1 EP 0066541A1 EP 82810220 A EP82810220 A EP 82810220A EP 82810220 A EP82810220 A EP 82810220A EP 0066541 A1 EP0066541 A1 EP 0066541A1
Authority
EP
European Patent Office
Prior art keywords
ball
tip
tube
diameter
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.)
Granted
Application number
EP82810220A
Other languages
German (de)
English (en)
Other versions
EP0066541B1 (fr
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/fr
Application granted granted Critical
Publication of EP0066541B1 publication Critical patent/EP0066541B1/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
    • 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 method for producing a ballpoint pen tip fed with liquid ink.
  • the invention further relates to the ballpoint pen tip produced according to the method.
  • 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.
  • 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 bulk consisting of fiber material and, subsequently, a pointed object made of fibers, which is enveloped by a non-porous tube is delivered.
  • a ballpoint pen is known with a tip made of metal and for holding two balls.
  • the paste-like ink is supplied in a conventional manner, ie without the use of a memory in the form of a lump and needle-shaped pen for the capillary feed of the ink up to the ball.
  • the tip consists of a tubular part with a strong wall and the same cross section throughout Cross section corresponds to the diameter of the ball. The wall of the ball bearing point 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; in addition, the ball is stored in a plastic tip.
  • the tip according to DE-OS 2701694 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 interrupted 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, such 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 pens of this latter type, in which these disadvantages are prevented.
  • 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 offered on the market is about 1 mm.
  • FIG. 1 schematically shows the tip of a ballpoint pen fed with liquid ink according to the invention. It is 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 used in conventional fountain pens, with the fluidity not being particularly influenced by the temperature differences.
  • 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.e. in such a way that the fibers are prevented from touching the ball or the fibers cannot reach between the ball surface and the bearing seat S of the ball.
  • the distance "a" is advantageously less than 3/4 of the ball diameter, but 1/4 larger than the ball.
  • the end face 3 ′′ of the needle-shaped part 3 ie the surface which causes the outflow of a plurality of liquid filaments from the needle shaped part brought into the seat S of the ball, the latter seat will be explained in more detail subsequently.
  • 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 characteristics of its shape and the material used to manufacture it are chosen such that the ink is continuously supplied to the ball and in the required amount according to the intensity of writing.
  • the purpose of the deformation work in particular with reference to the front part of the tube, in addition to the production of the inner diameter required for receiving the ball, is also to strengthen and reduce the original wall thickness in order to facilitate the insertion and the elasticity required for the ball to snap into place To ensure yielding of 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, whereas if the diameter is less than 0.8 mm, the number of indentations is four, in the limit case three will restrict.
  • 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. 2 h, on a larger scale how the end region of the front part A 'of the tube is brought to an exact size 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 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 4 "'inwards to the smallest possible radial dimension as is required for insertion, by snapping in the ball 5, i.e. by elastic yielding of the edge.
  • 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 arranged axially to the tool can be seen and, in a vertical plane ne, 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 plunger has a larger diameter than the shaft in order to guide it axially and to form a support for a prestressed cylinder spring 18.
  • the outer end 17" also acts as a plunger 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 Méthode pour la production de pointe à bille pour stylo à encre aqueuse et pointe produite selon cette méthode Expired EP0066541B1 (fr)

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 (fr) 1981-06-01 1981-06-01

Publications (2)

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

Family

ID=4259057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810220A Expired EP0066541B1 (fr) 1981-06-01 1982-05-21 Méthode pour la production de pointe à bille pour stylo à encre aqueuse et pointe produite selon cette méthode

Country Status (6)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4717277A (en) * 1986-01-21 1988-01-05 Rudi Hutt Writing point and method for the production thereof
EP0679535A3 (fr) * 1994-04-29 1996-01-10 Pilot Ink Co Ltd Pointe de stylo à bille, méthode de fabrication associée et stylo utilisant une telle pointe.

Families Citing this family (10)

* 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
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 (fr) * 2002-01-17 2003-07-23 Schächter, Friedrich Outil pour la production des pointes de stylo à bille
EP1658897A1 (fr) 2004-11-22 2006-05-24 Roche Diagnostics GmbH Dispositif microfluidique courbé
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

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU29155A1 (fr) * 1948-07-15 1948-09-15
US2834321A (en) * 1954-11-09 1958-05-13 Duefrene George Ball-type writing tip
US2879586A (en) * 1951-10-05 1959-03-31 Compania Uruguaya De Fomento Industrial Sa Method for the production of ball tip writing instruments
FR1340445A (fr) * 1962-04-05 1963-10-18 Real Patentauswertungs Anstalt Procédé et outillage pour la fabrication rapide d'une pointe de stylobille en partant d'une bande de tôle, et pointe de stylobille fabriquée par ce procédé
CH383211A (de) * 1960-06-22 1964-10-15 Kahn David Inc Verfahren zur Herstellung einer Schreibspitze eines Kugelschreibers und nach dem Verfahren hergestellte Schreibspitze
US3162941A (en) * 1963-01-04 1964-12-29 Cross Co A T Method of making ball point writing instrument
GB1029391A (en) * 1962-10-01 1966-05-11 Francesco Mazzier Improvements in or relating to the manufacture of writing points for ball pens
FR1501077A (fr) * 1966-05-31 1967-11-10 Real Patentauswertungs Anstalt Machine pour l'estampage extrêmement rapide des pointes pour stylos à billes et d'autres objets en partant d'une bande ou d'un fil de métal
CH562106A5 (fr) * 1973-01-19 1975-05-30 Tokyo Hat

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1139038A (en) * 1966-08-31 1969-01-08 Dainihon Bungu Kabushiki Kaish Aqueous-ink ball-point pen
US3966336A (en) * 1974-05-20 1976-06-29 The Gillette Company Ball type marker construction which eliminates stick-slip phenomena
JPS5412410Y2 (fr) * 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

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU29155A1 (fr) * 1948-07-15 1948-09-15
US2879586A (en) * 1951-10-05 1959-03-31 Compania Uruguaya De Fomento Industrial Sa Method for the production of ball tip writing instruments
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
FR1340445A (fr) * 1962-04-05 1963-10-18 Real Patentauswertungs Anstalt Procédé et outillage pour la fabrication rapide d'une pointe de stylobille en partant d'une bande de tôle, et pointe de stylobille fabriquée par ce procédé
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
FR1501077A (fr) * 1966-05-31 1967-11-10 Real Patentauswertungs Anstalt Machine pour l'estampage extrêmement rapide des pointes pour stylos à billes et d'autres objets en partant d'une bande ou d'un fil de métal
CH562106A5 (fr) * 1973-01-19 1975-05-30 Tokyo Hat

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4717277A (en) * 1986-01-21 1988-01-05 Rudi Hutt Writing point and method for the production thereof
EP0679535A3 (fr) * 1994-04-29 1996-01-10 Pilot Ink Co Ltd Pointe de stylo à bille, méthode de fabrication associée et stylo utilisant une telle pointe.
US5899625A (en) * 1994-04-29 1999-05-04 The Pilot Ink Co., Ltd. Ballpoint pen tip
US5904432A (en) * 1994-04-29 1999-05-18 The Pilot Ink Co., Ltd. Ballpoint pen tip, manufacturing method therefor, and ballpoint pen using the same

Also Published As

Publication number Publication date
EP0066541B1 (fr) 1985-09-11
CH671736A5 (fr) 1989-09-29
JPS57203598A (en) 1982-12-13
JPH0258014B2 (fr) 1990-12-06
DE3266151D1 (en) 1985-10-17
ATE15466T1 (de) 1985-09-15
US4789263A (en) 1988-12-06

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