A drawing die for micro capillary molding

By using nitrogen heating and sealing devices during the microcapillary forming process, the problems of drawing difficulty and oxidation were solved, achieving uniform heating and surface treatment, and improving yield and quality.

CN115647092BActive Publication Date: 2026-07-07JIANGXI KUPO TECH INNOVATION CO LTD +1
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Patent Information

Application Number
CN202211422342.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-14
Publication Date
2026-07-07
Estimated Expiration
2042-11-14

AI Technical Summary

Technical Problem

In the existing microcapillary forming process, drawing is laborious and the finished product is easily deformed. It is also prone to oxidation at high temperatures, which affects the yield and processing difficulty.

Method used

A barrier device is used to heat with nitrogen, and a sealing device and a pretreatment device are set up to form a closed chamber for uniform heating and protection, reducing the probability of oxidation reaction. The capillary surface is polished by the pretreatment device to improve quality.

Benefits of technology

It reduces the difficulty of drawing, increases the yield, reduces oxide generation, simplifies subsequent processing steps, and improves the uniformity and quality of capillaries.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of industrial production, in particular to a drawing die for micro capillary forming, which comprises two fixed dies, a drawing die arranged between the two fixed dies, and a blocking device. The blocking device is arranged at one end of the fixed die on one side and is used for drawing the micro capillary in an oxygen-isolated environment. When the micro capillary enters the guide pipe on one side, the micro capillary is heated by using preheated nitrogen during the conveying and drawing processes, so as to reduce the difficulty of drawing the micro capillary by the drawing machine through the drawing die. Compared with the preheating mode of the existing heating lamp, the nitrogen filled in the closed chamber can heat the micro capillary in all directions, so that the micro capillary is heated more uniformly.
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Citation Information

Patent Citations

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