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Title:
STEEL SHEET GAP-PUNCHING DIE
Document Type and Number:
WIPO Patent Application WO/2018/041223
Kind Code:
A1
Abstract:
A steel sheet gap-punching die, comprising an upper die and a lower die, the upper die comprising an upper die support (1), side protrusions (3), central protrusions (4) and a hydraulic cylinder (2), the lower die comprising a lower die base (5), side recesses (6) and central recesses (7). A top portion of the upper die support (1) is provided with the hydraulic cylinder (2) which acts as a driving apparatus, two sides of a bottom portion of the upper die support (1) are respectively provided with the side protrusions (3) used for punching side openings (13), the bottom portion of the upper die support (1) is provided with the two central protrusions (4) used for punching central gaps (14), the central protrusions (4) are arranged between the two side protrusions (3), the two central protrusions (4) are arranged at an interval, and the lower die base (5) is respectively provided with the two side recesses (6) and the two central recesses (7) in correspondence with the side protrusions (3) and the central protrusions (4).

Inventors:
YI, Shigui (Qianqiao Supplementary Area, Huishan Economic Development ZoneWuxi, Jiangsu 1, 214151, CN)
Application Number:
CN2017/099975
Publication Date:
March 08, 2018
Filing Date:
August 31, 2017
Export Citation:
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Assignee:
WUXI GUANGCAI MACHINERY MANUFACTURE CO. , LTD (Qianqiao Supplementary Area, Huishan Economic Development ZoneWuxi, Jiangsu 1, 214151, CN)
International Classes:
B21D28/14
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (F6 Xijin Centre, 39 Lianhuachi East Rd. Haidian District, Beijing 6, 100036, CN)
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