Title:
CORE-MAKING METHOD AND APPARATUS FOR LARGE SAND CORE
Document Type and Number:
WIPO Patent Application WO/2022/242183
Kind Code:
A1
Abstract:
A core-making method for a large sand core: providing a sand blowing mechanism, the bottom end of the sand blowing mechanism being matched with each inlet at the top of a core box (10) and the top end thereof being matched with the bottom end of a sand injection mechanism; the sand blowing mechanism has a sand blowing position moving between the sand injection mechanism and the core box and a degree of freedom to move out from said position, and has a lateral sand entry structure; moving the sand injection mechanism upward, moving the sand blowing mechanism into the sand blowing position, and then moving the sand injection mechanism downward to press the sand blowing mechanism; adding sand into the sand blowing mechanism and blowing air such that moulding sand enters the core box, the sand blowing pressure being 0.1MPa-0.2MPa and the sand blowing amount being 80-90% of the mass of the sand core; moving the sand injection mechanism upward, moving the sand blowing mechanism out of the sand blowing position, and then moving the sand injection mechanism downward and pressing the core box; injecting the residual moulding sand into the core box by means of the sand injection mechanism and simultaneously implementing compaction of the sand core, the sand injection pressure being 0.4MPa-0.5MPa; and air blowing and curing the sand core to complete the core making. A core-making apparatus comprising a sand blowing mechanism and a sand injection mechanism. The present method and apparatus implement core-making of a large sand core.
Inventors:
YANG LINLONG (CN)
GU HAIBING (CN)
LU GAOCHUN (CN)
LIU LINYI (CN)
GU HAIBING (CN)
LU GAOCHUN (CN)
LIU LINYI (CN)
Application Number:
PCT/CN2021/142742
Publication Date:
November 24, 2022
Filing Date:
December 29, 2021
Export Citation:
Assignee:
SUZHOU MINGZHI TECHNOLOGY CO (CN)
International Classes:
B22C15/24; B22C19/00
Foreign References:
| CN113333687A | 2021-09-03 | |||
| CN105170912A | 2015-12-23 | |||
| CN101347820A | 2009-01-21 | |||
| CN201244663Y | 2009-05-27 | |||
| CN104772436A | 2015-07-15 | |||
| CN104624983A | 2015-05-20 | |||
| US2798266A | 1957-07-09 | |||
| JP2001198653A | 2001-07-24 |
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT AND TRADEMARK AGENCY, LTD. (CN)
Download PDF: