Title:
EXTRUSION PRESS DEVICE AND INJECTION MOLDING MACHINE
Document Type and Number:
WIPO Patent Application WO/2024/014388
Kind Code:
A1
Abstract:
Provided is an extrusion press device (101) comprising: an extrusion element (103); an extrusion mechanism (102) that hydraulically extrudes the extrusion element (103); pump units (U11 to U13) including pumps (P11 to P13) that supply hydraulic oil to the extrusion mechanism (102), and motors (M11 to M13) that drive the pumps (P11 to P13); and a control device (105) that controls the pump units (U11 to U13). A plurality of pump units (U11 to U13) are provided. The pumps (P11 to P13) are of the variable displacement type. There is a correlation between the ejection pressure of the pumps (P11 to P13) and the maximum allowable ejection amount allowed for each of the pumps (P11 to P13). The pressure and the ejection amount required for extruding the extrusion element (103) at a desired extrusion speed are set as a required pressure and a required ejection amount, respectively. If the required ejection amount corresponding to the required pressure exceeds the maximum allowable ejection amount, the control device (105) increases the number of pumps (P11 to P13) to be driven.
Inventors:
NONOUE SHIYOU (JP)
KAWASAKI MAMORU (JP)
KAWASAKI MAMORU (JP)
Application Number:
PCT/JP2023/025091
Publication Date:
January 18, 2024
Filing Date:
July 06, 2023
Export Citation:
Assignee:
UBE MACHINERY CORP LTD (JP)
International Classes:
B29C45/76; B21C31/00; B29C45/82; F15B11/02; F15B11/04
Domestic Patent References:
| WO1991012097A1 | 1991-08-22 |
Foreign References:
| JP2020099919A | 2020-07-02 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Download PDF: