Conical pen point and its manufacturing method and ceramic composite conical pen point

Abstract

A highly durable conical nib is provided which also realizes a significant improvement in a nib productivity and a significant cost reduction. The conical nib comprises: a plurality of separated combtooth pieces (2) being able to converge progressively toward front ends thereof and combine to form a virtually conical shape and that the front ends thereof combine to form a virtually spherical shape; a holding member (3) capable of arranging the combtooth pieces along a circumference; and a converging member (4) capable of converging these combtooth pieces; wherein the plurality of separated combtooth pieces are assembled by the holding member and the converging member, both separate from the combtooth pieces, into a conical nib having a writing tip at the front end thereof and an ink feeding path between each combtooth piece. To enhance durability, this nib may be constructed of a base portion and a plurality of combtooth pieces and hemisphere-divided portions wherein each of the combtooth pieces is divided into a front piece and a rear piece and the front piece is formed from a ceramic material and the rear piece from a flexible material such as synthetic resin.

Description

technical field [0001] The present invention relates to a nib for use in a fountain pen or other writing instrument and its method of manufacture. Also, the present invention relates to a composite conical nib using a ceramic material excellent in durability. Background technique [0002] Traditionally, high-durability nibs have been used for writing instruments such as fountain pens. In the case of a fountain pen tip, it has a structure in which a wear-resistant alloy is melted at the tip, cut, and then its corners are ground to a smooth shape. figure 1 The conical nib shown is an example of the previous type of nib described above. exist figure 1 Among them, it includes: a conical nib 100 ; a nib basic body 200 , which has a certain contact pressure of a resin molded product; and a converging member 300 . [0003] The nib basic body 200 is made of synthetic resin material, and is integrally formed by injection molding; figure 2 As shown, the nib basic body 200 includ...

AI Technical Summary

Problems solved by technology

[0008] (1) The basic body of the nib is concentrated to form a conical shape. Due to the complex shape, the metal mold is complicated, which makes the metal mold cost high and cannot be mass-produced

[0009] (2) The basic body of the nib is concentrated to form a conical shape. Therefore, when confirming whether each piece of the pectinate piece conforms to the dimensional accuracy, it is necessary to insert a ring piece to make it a finished product state, otherwise it cannot be confirmed. less convenient

[0010] (3) In order to make the nib feel smooth, it is necessary to grind the outer corners of the tip into a smooth shape. Therefore, it is necessary to use a roller grinder to perform corner grinding operations. In this operation, the grooves of the comb-shaped gaps Because they are entangled with each other, it is necessary to confirm during the work, so the efficiency of the corner grinding work cannot be improved.

[0013] However, in the above-mentioned previous type of nib, the ceramic material is hard and cannot be bent like a metal plate-shaped nib, so grooves or through holes need to be provided in order to lead out the ink, but the groove or through However, the hole cannot cope with poor ink supply due to ink viscosity changes or sediment residues after the ink is dried; in addition, the contact between the tip of the pen and the paper surface will also bring dust and paper dust, and when the pen body is moved There is almost no clearing measures when the ink channel is clogged, so it is inevitable that the writing operation will be unstable.

The foregoing problems are not solved by using a durable ceramic nib, which is why pens using ceramic nibs cannot become practical writing instruments and are circulated in the market.

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