具有变径冷却内孔的模具冲杆及其专用冲孔装置和方法

By combining a variable-diameter cooling inner hole structure with a special punching device, the problems of condensation and uneven cooling are solved, achieving efficient and precise cooling and stable steel shell quality.

CN121315119BActive Publication Date: 2026-07-17SUZHOU ORANGE ELECTRONIC PRECISION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU ORANGE ELECTRONIC PRECISION CO LTD
Filing Date
2025-12-10
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In high-humidity environments, the existing punch cooling structure causes condensation, leading to rust on the steel shell, and the cooling efficiency is uneven, especially with excessive cooling in non-working sections.

Method used

The design incorporates a variable-diameter cooling inner hole structure, with large-diameter cooling holes in the working section and small-diameter cooling holes in the installation section. Combined with a dedicated punching device, the process is carried out in steps and layers to ensure balanced cooling and structural strength.

Benefits of technology

It significantly reduces condensation, lowers the rust rate of the steel shell, improves cooling efficiency and structural stability, and ensures machining accuracy and strength.

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Abstract

本发明提供具有变径冷却内孔的模具冲杆及其专用冲孔装置和方法,涉及冲压模具技术领域,用于解决高湿环境下冲杆表面冷凝水过多导致工件生锈的问题,模具冲杆包括工作段和安装段,其内部设有变径冷却内孔,该内孔由三段构成:位于工作段的大直径柱孔一段、位于安装段的小直径柱孔二段以及连接二者的锥孔段,此结构减少了非有效冷却段的过冷现象,在保证有效工作段冷却效果的同时,显著降低了冷凝水凝结,本发明还提供了专用冲孔装置,采用分步、分层的微单元冲压方式,通过带锥面承接段的插柱逐层顶出定位柱周向通槽内的多组冲块单元,对预制的等径孔进行局部、稳定的扩孔,从而高效、精确地加工出变径冷却内孔。
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Citation Information

Patent Citations

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    CN102125958A

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