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Title:
LIQUID PRESSURE TYPE PIPE EXPANSION DEVICE
Document Type and Number:
Japanese Patent JP2015081553
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid pressure type pipe expansion device that enables pressurization control to make liquid into a desired pressure with accuracy and reproducibility, and also facilitates maintenance of the device.SOLUTION: A liquid pressure type pipe expansion device 1 includes: a liquid supply tank 6 that stores pipe expansion liquid W1; a pressure increasing machine 4 that increases the pressure of pipe expansion liquid W1 from the liquid supply tank 6 to make it into ultrahigh pressure; and a pipe expansion tool part 3 that injects pipe expansion liquid W2 of ultrahigh pressure from the pressure increasing machine 4 to a seal part performing pipe expansion molding. The pressure increasing machine 4 includes an electric motor 48, a motion conversion mechanism 49 converting rotational motion of the electric motor 48 into a reciprocating motion of a plunger 45, and a pressure holding valve 42.

Inventors:
SAWAZAKI KENJI
NAKATANI MASAO
KITAMURA NOBUHIKO
ISHITANI AKIHIRO
Application Number:
JP2013219671A
Publication Date:
April 27, 2015
Filing Date:
October 22, 2013
Export Citation:
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Assignee:
SUGINO MACH
International Classes:
F04B53/10; B21D39/08; F04B9/02; F04B49/06; F15B1/00; F15B3/00
Domestic Patent References:
JP3181356U2013-01-31
JPH08332535A1996-12-17
JPH07324676A1995-12-12
JPS63131B21988-01-05
JP2007275961A2007-10-25
Attorney, Agent or Firm:
木森 有平
浅香 小百合



 
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