MUMBAI, India, Aug. 24 -- Intellectual Property India has published a patent application (202517084394 A) filed by Unipres Corporation on September 05, 2025, for Punch For Press Working And Press Working Device Equipped With Same.
Inventors include Hyohdoh Yoshinori; Mizuno Katsuhiro; Watanabe Mari; Nakagawa Yuta; and Ishihara Daijiro.
The application for the patent was published on August 21, 2026, under issue no. 34/2026.
Abstract: [Problem] To provide a punch for press working in which a resonance point can be easily adjusted without weakening the punch strength, regardless of shape and material, and regardless of symmetry, and in which the punch function and the quality of press working can be improved, and a press working device equipped with the punch. [Solution] The punch is mounted on an upper die of the press working device and is driven by a vibrator. The cross-sectional shape of the punch in a horizontal plane orthogonal to a vertical plane including a center line in a punch direction has a structure having plane symmetry with respect to the vertical plane. A flange- shaped holding part is provided on an outer peripheral edge or a side surface of an intermediate part in the punch direction of the punch, while a first through-hole is bored in an upper side punch body on the upper side of the holding part, and a second through-hole is bored in a lower side punch body on the lower side of the holding part.
Disclaimer: Curated by HT Syndication.
