Apparatus for manufacturing powder molded bodies, and method for manufacturing powder molded bodies

JPWO2026014393A1Active Publication Date: 2026-01-15SUMITOMO ELECTRIC SINTERED ALLOY LTD
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Patent Information

Application Number
JP2025574057
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-07-09
Filing Date
2025-07-04
Publication Date
2026-01-15
Estimated Expiration
2045-07-04

AI Technical Summary

Technical Problem

Existing powder molding apparatuses face challenges in accurately positioning the second die with an undercut shape due to resistance from the powder, leading to incorrect positioning of the undercut portion and insufficient compression, especially when the size of the undercut is large, and simultaneous movement of the first punch and second die complicates independent timing adjustments.

Method used

A powder molding apparatus with a first core having a projection that is moved independently by a drive mechanism, allowing precise positioning of the undercut shape and enabling individual timing adjustments for the first core movement, separate from the upper and lower punches, to ensure accurate compression and efficient production of powder molded bodies with undercut shapes.

Benefits of technology

The apparatus achieves high-precision and efficient manufacturing of powder molded bodies with undercut shapes by ensuring the first core is positioned correctly despite powder resistance, allowing for independent timing control and simultaneous compression of multiple parts.

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Abstract

A powder molding apparatus comprising: a die having a hollow portion penetrating in a first direction; a first core inserted into the hollow portion along the first direction; an upper punch and a lower punch for compressing powder disposed in the hollow portion; and a drive mechanism for moving the first core along the first direction, wherein the first core has a projection protruding from its side surface in a direction intersecting the first direction; and the drive mechanism includes a cylinder for supplying power to the first core so as to move independently of the die, the upper punch, and the lower punch.
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