Title:
ELECTRIC PIPE EXPANDER
Document Type and Number:
WIPO Patent Application WO/2020/192610
Kind Code:
A1
Abstract:
An electric pipe expander and an intelligent control circuit for the electric pipe expander. The electric pipe expander comprises a pipe expander body (1) and a mandrel sliding cavity (2) provided on the pipe expander body (1); a chuck body (4) that can hold a pipe (3) to be processed is provided at an open end of the mandrel sliding cavity (2); a mandrel (5) is slidingly connected in the mandrel sliding cavity (2); an obliquely-disposed expansion cone (6) is provided at external end of the mandrel (5), and an elastic body accommodating cavity (7) is provided at an internal end thereof; a flat key (10) is provided on the mandrel (5); and an elastic body (12) is interposed between the flat key (10) and a bottom surface of the elastic body accommodating cavity (7). The electric pipe expander has a simple structure, high pipe positioning accuracy, and good pipe socket processing quality.
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Inventors:
JIANG YOURONG (CN)
Application Number:
PCT/CN2020/080586
Publication Date:
October 01, 2020
Filing Date:
March 23, 2020
Export Citation:
Assignee:
JIANG YOURONG (CN)
International Classes:
B21D41/02; B21D43/00
Foreign References:
| CN109926506A | 2019-06-25 | |||
| CN209969404U | 2020-01-21 | |||
| CN209969403U | 2020-01-21 | |||
| CN209969402U | 2020-01-21 | |||
| CN209969405U | 2020-01-21 | |||
| CN209969406U | 2020-01-21 | |||
| JP3951275B2 | 2007-08-01 | |||
| JP3951275B2 | 2007-08-01 | |||
| CN201239764Y | 2009-05-20 | |||
| CN101028640A | 2007-09-05 | |||
| EP2786816A1 | 2014-10-08 | |||
| JPH09271854A | 1997-10-21 |
Other References:
See also references of EP 3950164A4
Attorney, Agent or Firm:
HANGZHOU HANGCHENG PATENT ATTORNEY OFFICE CO., LTD. (CN)
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