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Neck-reducing method of a large-diameter needle-tube pen tip

A large-diameter and needle-tube technology is applied in the field of necking of large-diameter needle-tube nibs, which can solve the problems of inability to apply large-diameter needle-tube nib processing, increase the reject rate, irregular deformation of needle-tube nibs, etc., and reduce single-station Duration, reduced output requirements, uniform necking effect

Active Publication Date: 2021-01-15
INST OF NEW MATERIALS & IND TECH WENZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When processing the tip of the needle tube, it is necessary to shrink the neck at the position close to the tip of the needle tube to form a ball holder for supporting the ball. The traditional method of processing the ball holder is to put the nib into the designated mold to prevent the mold from forming when the mold is closed. The extrusion force of the needle pen head will be squeezed from the outside to the inside to form a ball holder. However, as the diameter of the needle pen head increases, a greater extrusion force is required when squeezing the needle pen head. Once the extrusion force is too large, it will easily cause the needle tube to Irregular deformation of the nib will increase the reject rate, so the traditional processing method cannot be applied to the processing of large-diameter needle nibs

Method used

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  • Neck-reducing method of a large-diameter needle-tube pen tip
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  • Neck-reducing method of a large-diameter needle-tube pen tip

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Embodiment Construction

[0021] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention relates to a reducing method of a large-tube-diameter needle tube point. A conveying base conveys a needle tube point to the lower side of a first reducing device, a machining base descends, the needle tube point enters a machining hole from a feed port and meanwhile ejects up a machining part of a machining ball, the machining ball rises along a movement channel to reach a machiningposition, the machining base coaxially rotates relative to the conveying base and meanwhile a force exerting mechanism downwards squeezes the machining ball, the machining ball rotates while the machining base revolves, reducing is completed after the machining ball descends to a designated height, the machining base stops rotating, the machining base rises, the machining ball moves up along thesurface of the reduced needle tube point until the needle tube point is completely disengaged from the machining base, the conveying base conveys the needle tube point to a next reducing device for the same reducing, and the reducing depth is larger than the reducing depth of the last reducing device. By means of the scheme, the reducing method of the large-tube-diameter needle tube point ensuresthe forming effect of the needle tube point during reducing.

Description

technical field [0001] The invention relates to the field of nib processing, in particular to a necking method for a needle nib with a large diameter. Background technique [0002] The needle tube nib is a kind of nib processed from segmented needle tubes. The size of the traditional needle tube tip is generally 0.4mm~1.2mm. With the increasing demand of users, it is now necessary to write with a large diameter needle tube tip with a size of 1.2mm~2.0mm. [0003] When processing the tip of the needle tube, it is necessary to shrink the neck at the position close to the tip of the needle tube to form a ball holder for supporting the ball. The traditional method of processing the ball holder is to put the nib into the designated mold to prevent the mold from forming when the mold is closed. The extrusion force of the needle pen head will be squeezed from the outside to the inside to form a ball holder. However, as the diameter of the needle pen head increases, a greater extru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43K15/02B43K7/00
CPCB43K7/00B43K15/02
Inventor 王兆伦
Owner INST OF NEW MATERIALS & IND TECH WENZHOU UNIV
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