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Patent Searching and Data


Title:
HOLE-PUNCHING DEVICE FOR ARC-SHAPED CORRUGATED PLATE
Document Type and Number:
WIPO Patent Application WO/2021/077651
Kind Code:
A1
Abstract:
Disclosed is a hole-punching device for an arc-shaped corrugated plate, the hole-punching device comprising: an arc-shaped support (1), hole-punching machines (2) and a pressing device (3). The hole-punching machines are arranged on one side of the arc-shaped support, and the number and the distance of the hole-punching machines are identical to the number and the distance of threaded holes needing to be punched. According to the hole-punching device for an arc-shaped corrugated plate, punching a hole on a corrugated plate rolled into an arc shape may be achieved, the problem of side hole deformation caused by a traditional hole-punching and rolling means is prevented, and a plurality of holes may be punched at the same time, the hole-punching efficiency is high, and the hole forming quality is high.

Inventors:
ZHAN FUJUN (CN)
Application Number:
PCT/CN2020/077901
Publication Date:
April 29, 2021
Filing Date:
March 05, 2020
Export Citation:
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Assignee:
NANJING LIANZHONG ENGINEERING TECH CO LTD (CN)
International Classes:
B21D28/26; B21D28/04
Foreign References:
CN102672033A2012-09-19
CN107052142A2017-08-18
CN103447376A2013-12-18
CN101337252A2009-01-07
CN110238271A2019-09-17
US3777399A1973-12-11
Attorney, Agent or Firm:
NANJING SUGAO PATENT AND TRADEMARK FIRM(ORDINARY PARTNERSHIP) (CN)
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