Title:
DEGREE-OF-VACUUM MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/017053
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a degree-of-vacuum measurement device which does not require a complicated control of a vacuum valve when a vacuum is drawn in the interior of a mold, which can be manufactured inexpensively, and which can be used for smaller molds. The degree-of-vacuum measurement device is characterized in that: a movable core (20) has therein a vacuum measurement hole (21) for measuring the degree of vacuum of a cavity (C); a gas outflow groove (11b) is formed, in which a gap of 0.06 mm to 0.07 mm is maintained between an abutting pin (11) provided in a stationary core (10) and the movable core (20) by means of a biasing member (12) that presses the abutting pin (11) against the periphery of the vacuum measurement hole (21); and a flow divider (15) that reduces the inflow pressure of molten metal is provided downstream from the gas outflow groove (11b).
Inventors:
MORIKAWA IWAO (JP)
Application Number:
PCT/JP2018/027392
Publication Date:
January 23, 2020
Filing Date:
July 20, 2018
Export Citation:
Assignee:
DIEENGINEERING CORP (JP)
International Classes:
B22D17/14; B22D17/22; G01L21/00
Domestic Patent References:
| WO2008088064A1 | 2008-07-24 |
Foreign References:
| JP2004298910A | 2004-10-28 | |||
| JP2013128969A | 2013-07-04 |
Attorney, Agent or Firm:
MIYATA Nobumichi (JP)
Download PDF: