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Adjustor of note taking utensil and metal mould apparatus of adjustor

A regulator and metal mold technology, applied in the repair of ink pens, ink pens with ink storage tubes in the pen barrel, ballpoint pens, etc., can solve the problems affecting the adjustment of ink bag pressure and ink retention, etc., to achieve excellent note-taking, Good air permeability and easy damage effect

Inactive Publication Date: 2005-11-09
MITSUBISHI PENCIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, when a regulator with air holes near the air-liquid replacement part is used for writing instruments, the air holes prevent the air-liquid replacement part from being shaped as set, and there is a problem that it affects the function of adjusting the pressure in the ink bag.
In addition, when using an regulator that produces air holes in the thick part of the blade, since the set width of the retention groove does not become the set width, there is a problem that the function of retaining ink is affected

Method used

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  • Adjustor of note taking utensil and metal mould apparatus of adjustor
  • Adjustor of note taking utensil and metal mould apparatus of adjustor
  • Adjustor of note taking utensil and metal mould apparatus of adjustor

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Embodiment Construction

[0035] Embodiments of the present invention will be described below with reference to the drawings. The accompanying drawings show an example of the embodiment of the present invention, figure 1 In order to show the overall longitudinal section of the main body of the writing instrument, figure 2 is an enlarged longitudinal sectional view of the front end side, image 3 This is an external view of the ink tank side of the regulator as a part, Figure 4 This is an external view of the air tank side of the regulator as a component, Figure 5 for image 3 The view of the A-A line section, Figure 6 It is an explanatory drawing of the cavity of the regulator metal mold device cut vertically, Figure 7 (a) and (b) are explanatory diagrams traversing the cavity of the mold device, and are explanatory diagrams of a state in which the mold is separated and the gate is cut out from the regulator.

[0036] The ink 8 that can be used for the adjuster type writing utensils of embod...

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Abstract

A adjuster is molded through injection of a resin in a metal mold cavity. The shrinkages at respective parts can be prevented from developing by employing the adjuster having resin influx parts at the two or an axially fore part and an axially back part of the adjuster.

Description

technical field [0001] The present invention relates to an improvement of an regulator and an injection molding metal mold device for a straight-liquid regulator-type writing tool such as a ballpoint pen, a signature pen, a marker pen, and a fountain pen having a nib serving as a writing part at the front end thereof, This direct-liquid regulator-type writing tool has an ink bladder that directly stores ink, and a regulator that is a regulator that utilizes capillary phenomenon to adjust the internal pressure. Background technique [0002] In the past, there has been known a writing instrument (regulator-type writing instrument) in which a regulator is provided between the nib and the ink bag, and the regulator is used to adjust the pressure in the ink bag to keep the ink in a straight liquid state while preventing ink from leaking from the nib. and blow out from the air hole. Generally, in an adjuster-type writing tool, there are a nib having a writing part at the front en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43K5/18B29C45/00B29C45/26B29C45/27B43K5/00B43K7/10B43K15/00
CPCB29C45/27B43K7/10
Inventor 古川和彦佐野阳二郎
Owner MITSUBISHI PENCIL CO LTD