JP2001205967A - Pen point made of metallic fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pen point made of metallic fiber capable of writing a slender line width having no interstice in connection with change or loss of a pore, enhancing wear resistance and breaking strength. SOLUTION: The pen point made of metallic fiber is formed by metal diffusing a plate-like base made of the metallic fiber at a contact point between the fibers to form a compression sintering assembly having connected open cell pores 5, cold forging the base, and molding the base into a shape of the pen point consisting of a tip rounded head 2, a cylindrical body part 3 and a rear end opening part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a metal fiber nib.

[0002]

2. Description of the Related Art For example, Japanese Patent No.
No. 80813, and the present invention comprises pressing a sintered and formed inorganic fiber plate-like base into a cap having a head and an opening. However, processing is difficult, it is difficult to obtain a head portion capable of writing a thin line width, and the abrasion resistance and the breaking strength are inferior to those of a ballpoint pen. In addition, there is a concern that peeling and deformation at the fiber joint may lead to a change or loss of pores, and it is important to secure such pores, that is, to take measures against openings. Japanese Utility Model Application Laid-Open No. 60-191380 discloses a pen tip in which a thin metal tip having a large number of fine holes formed at the tip of the pen tip of a pen core body is covered. Also with this pen tip, it is difficult to manage and form micropores at the tip of the pen tip, and the workability is poor.

[0003]

The first problem to be solved is to write a sheet having no opening that leads to a change or loss of pores, high abrasion resistance and breaking strength, and a thin line width. Secondly, possible metal fiber nibs are:
Thirdly, a metal fiber nib having a high opening resistance is used, and thirdly, a metal fiber capable of increasing the strength in a cylindrical body portion which does not work as a writing portion, preventing ink from drying, and writing with a ruler. Fourth, a metal fiber nib with high brush tip strength, fourth, a metal fiber nib with high ink wettability and rust resistance, and sixth, Another object of the present invention is to provide a metal fiber nib having high surface strength.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a compression sintering machine having continuous pores formed by bonding a metal fiber plate-like substrate by metal diffusion at contact points between metal fibers. The metal fiber plate-shaped substrate is formed by cold forging, and is formed into a pen point shape including a rounded head portion, a cylindrical body portion, and a rear opening portion. Further, in the present invention, after the mold is formed into the shape of the pen tip, the thermosetting resin liquid is impregnated, and the bonding portion is resin-bonded by volatilization of the solvent and curing of the residual resin in the bonding portion. . Further, the present invention is characterized in that the outer peripheral surface of the cylindrical trunk portion is forged, and the pores on the outer peripheral surface are closed. Further, the present invention is characterized in that a rounded head portion is forged, and a part of pores is closed and scattered on the surface of the rounded head portion. According to the present invention, the metal fiber is a stainless steel fiber. Further, the present invention is characterized in that the surface of the compression sintered aggregate is covered with a stainless steel wire mesh.

[0005] In the present invention, the rounded tip of the head portion is a hemispherical shape, a straight shape from the substantially hemispherical portion of the tip to the torso portion, or a parabolic shape from the rounded tip portion to the torso portion. , Rounded cones, and other similar forms. The thickness of the head portion, the torso portion, and the opening portion may be either the same thickness or different thickness. The metal fibers in the compression-sintered aggregate have an appropriate cross-sectional shape of a circle or a corner,
For example, a polygonal cross-sectional shape having rounded corners or a polygonal cross-sectional shape having a plurality of ridges in the length direction may be used. In addition, the metal fiber may have an aspect in which the tip of the ridge has an acute angle in a transverse cross section, or may have an aspect in which the ridge is deviated in a constant outer peripheral direction and protrudes. . The contact point between the metal fibers may be either a surface or a ridge. The material of the metal fiber is variously selected depending on conditions such as sinterability and plasticity. For example, aluminum, iron, and stainless steel are preferable.
In particular, stainless steel fibers are preferable from the viewpoints of ink wettability and durability. The thermosetting resin is a urethane resin, an epoxy resin, or another known thermosetting resin.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 illustrates an embodiment of a metal fiber nib according to the present invention.
The compression-sintered assembly formed by performing intermetallic diffusion at the contact point between the metal fibers and joining and pressing is punched out of a disc-shaped substrate, and the metal-fiber plate-shaped substrate is cold-forged to form a pen. A hemispherical head portion 2, a cylindrical trunk portion 3 smoothly connected from the rear end of the head portion 2, and a rear end opening portion 4 of the rear end of the cylindrical trunk portion 3. It is molded into the same pen tip shape. And head part 2
The body 3 and the innumerable pores in the rear end opening 4 are continuous with each other to form continuous pores 5 and are hollow from the rear end opening 4 to the inside of the head 2 to form a hollow interior 6.
Is formed. The outer peripheral surface 3a of the cylindrical body portion 3 of the pen tip 1 is formed in a state where pores are closed,
The outer peripheral surface 3a is prevented from getting wet by the ink moving inside the continuous pores 5 by the capillary. The outer diameter D of the pen tip 1 is 0.5 to 5.0 mm, and the total length L is L =
1.0 × D or more.

As an example of the manufacture of such a pen tip 1, an aggregate formed by assembling stainless steel fibers three-dimensionally in an irregular direction is pressed into a metal fiber by pressurization under heating in a mineralizing atmosphere or vacuum. The intermetallic diffusion is performed at the contact points between the two to join together to form a compression-sintered aggregate, a disc-shaped substrate is punched out of the compressed-sintered aggregate by a pressing device, and the metal fiber plate-shaped substrate is formed. Cold forging,
Tip round head part 2, cylindrical trunk part 3, and rear end opening part 4
Molded into a nib shape consisting of The outer peripheral surface 3a of the cylindrical trunk portion 3 is formed into a surface form in which pores are crushed by repeating a forging state in the process of cold forging several times. The porosity of the pen tip 1 adjusts the aggregation density of the fibers, and specifically, is preferably about 30 to 90%. The fiber is suitably one having a diameter of about 1 to 100 μm, and particularly, a short fiber and a crimped fiber are preferable in view of the capillary action, and specifically, a fiber having a diameter of about 3 to 30 / inch is suitable. The length of the fibers is, for example, about 30 to 200 mm in the case of short fibers.

FIG. 2 illustrates another embodiment of the metal fiber nib of the present invention. The configuration is basically the same as that of the embodiment of FIG. The description of the existing configuration will be omitted, and a different configuration will be described. The head portion 2 is formed in a form that exhibits a linear shape from the substantially hemispherical portion at the tip end to the trunk portion 3.

FIG. 3 illustrates another embodiment of the metal fiber nib of the present invention. The configuration is basically the same as that of the embodiment of FIG. 1 described above. The description of the existing configuration will be omitted, and a different configuration will be described. The head portion 2 is formed in a mode of exhibiting a parabolic shape from the round portion at the tip to the trunk portion.

Although not shown, the pen tip 1 of each of the above-described embodiments is molded into a pen tip shape, and then impregnated with a thermosetting resin liquid to evaporate the solvent and cure the residual resin at the joint. Alternatively, the bonding portion may be a resin-bonded embodiment. Similarly, the pen tip 1 of each of the above-described embodiments
May be in a form in which the tip R-shaped head portion 2 is forged, and some pores are blocked and scattered on the surface of the tip R-shaped head portion 2. Further, the pen tip 1 of each of the above-described embodiments may be of an embodiment in which the surface of the compression-sintered aggregate is pressed and molded into a disk-shaped substrate covered with a stainless steel wire mesh.

As a use mode (not shown) of the pen tip 1 of each of the above-described embodiments, ink is directly inserted into the hollow interior 6 while being inserted into the tip of the barrel, and the ink is directly injected into the hollow interior 6. May be supplied by moving the capillary from the continuous pores 5 on the inner surface forming the head to the head portion 2, or
An ink guide core is inserted into the hollow interior 6 in a state of being inserted into the tip of the barrel, and ink is formed from the continuous pores 5 on the inner surface through which the ink forms the hollow interior 6 through the ink guide core. A configuration in which the liquid is supplied to the cartridge 2 by moving a capillary tube may be used.

[0012]

A. Effects of the Invention According to the first aspect, there is provided a high-quality nib having stable and continuous pores without openings that lead to change or loss of pores. Because of its high wear resistance and high breaking strength, the outer diameter and the tip of the brush can be made thin, and the feature is that it can be used from a pen tip for a thick line with a large line width to a pen point for a thin line that can be written even with a small line width. is there. B. According to the second aspect, the opening resistance is high and can withstand high writing pressure. C. According to the third aspect, the strength of the cylindrical body portion that does not work as a writing portion is further increased, which is particularly effective as a fine wire nib, and there is no drying of the ink from the cylindrical body portion, and Since the barrel is not wet by the ink which moves the continuous pores by the capillary, even if the barrel is written on the ruler, the ruler is not stained with the ink. D. According to claim 4, the tip strength is further increased. E. FIG. According to claim 5, the ink wettability and rust resistance are high. F. According to claim 6, the surface strength is further increased.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the metal fiber nib of the present invention.
(A) is a side view, (B) is (A)
(B)-(B) longitudinal sectional view.

FIG. 2 is a side view illustrating another embodiment of the metal fiber nib of the present invention.

FIG. 3 is a side view illustrating another embodiment of the metal fiber nib of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pen tip 2 Head part 3 Body part 3a Outer peripheral surface 4 Rear end opening part 5 Continuous pore 6 Hollow interior

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kiyoshi Shimizu 59-115 Shinaka, Kanazu-cho, Sakai-gun, Fukui Prefecture F-term (reference) 2C350 GA04 HA16 NA00 NA01 NA02 NC02 NC10 NC11 NC22

Claims (6)

[Claims] 1. A metal fiber plate-like substrate is formed of a compression sintered aggregate having continuous pores joined by performing metal diffusion at a contact point between metal fibers, and forming the metal fiber plate-like substrate in a cold state. A metal fiber nib that is forged and molded into a nib shape consisting of a rounded head, a cylindrical body, and a rear opening. 2. The method according to claim 1, wherein after the mold is formed into the shape of a pen point, a thermosetting resin liquid is impregnated, and the joint is bonded to the resin by volatilization of the solvent and curing of the residual resin in the joint. The metal fiber nib according to claim 1. 3. The metal fiber nib according to claim 1, wherein the outer peripheral surface of the cylindrical body portion is forged, and pores on the outer peripheral surface are closed. 4. The head according to any one of claims 1 to 3, wherein the rounded head is forged, and a part of the pores is closed and scattered on the surface of the rounded head. 2. The metal fiber nib according to claim 1. 5. The nib according to claim 1, wherein the metal fiber is a stainless steel fiber. 6. The metal fiber nib according to claim 1, wherein the surface of the compression sintered aggregate is coated with a stainless steel wire mesh.