hit three point agency

Abstract

The invention discloses a three-point-punching mechanism which comprises oblique sliders, guide columns and steel needles. The three guide columns are transversely and annularly arranged at intervals of 120 degrees, the steel needles are transversely arranged, one end of each steel needle is connected to the inner end of the corresponding guide column, a processed tube is positioned in the center of an area enclosed by the other ends of the three steel needles, the guide columns can move along the self axial direction, the oblique sliders are positioned on the peripheries of the outer ends of the guide columns, a surface, which is in contact with the corresponding guide column, of each oblique slider is an inner surface of the oblique slider and is an inclined plane, each oblique slider is positioned and stopped in the transverse direction and can ascend and descend in the longitudinal direction, the three-point-punching mechanism is provided with a moving mechanism which drives the oblique sliders to ascend and descend, when the moving mechanism drives the oblique sliders to descend, the oblique sliders push the guide columns, so that the steel needles centripetally move to perform three-point-punching operation for the tube, after the three-point-punching operation is finished, the oblique sliders move upward, the guide columns and the steel needles centripetally move, and the total mechanism resets. Because the three steel needles move synchronously, dimension and location are accurate, automatic three-point-punching operation of the tube is realized, and work efficiency is improved.

Description

technical field [0001] The invention relates to a three-point striking mechanism, in particular to a three-point striking mechanism which can be used for processing needle tube nibs. Background technique [0002] At present, the ball seat structure of the needle-type gel pen head usually adopts three points to make the inner wall of the tube material inwardly recess three points as the ball seat for supporting the steel ball. Consistent, evenly divided angles, the required accuracy is quite high, otherwise it is easy to cause the ball seat to shift after the nib is processed, or the steel ball falls on the support point of the ball seat unevenly, resulting in one side after closing, and thick and thin lines when writing, which is serious. Sometimes it will cause writing short lines or pitting. The traditional three-point processing method is to directly use steel needles for radial dotting, which cannot be used on multi-station machine tools, but can only be processed on a ...

AI Technical Summary

Problems solved by technology

[0002] At present, the ball seat structure of the needle-type gel pen head usually adopts three points to make the inner wall of the tube material inwardly recess three points as the ball seat for supporting the steel ball. Consistent, evenly divided angles, the required precision is quite high, otherwise it is easy to cause the ball seat to shift after the nib is processed, or the steel ball falls on the support point of the ball seat unevenly, resulting in one side after closing, and thick and thin lines when writing, which is serious Can cause short lines or pitting when writing

The traditional three-point processing method is to directly use steel needles for radial dotting, which cannot be used on multi-station machine tools, but can only be processed on a single station. Uniformity and / or movement distance position is not accurate, which can easily lead to poor dotting effect

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