Title:
LOW-PRESSURE MOLD FILLING GRAVITY FEEDING DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2023/010742
Kind Code:
A1
Abstract:
A low-pressure mold filling gravity feeding device, comprising a low-pressure furnace body (1) storing pouring liquid, a mold (2) having a cavity (21), and a control system (9). Ingates (22) are provided at the bottom or side surface of the cavity (21); the ingates (22) are communicated with a runner (23); an inlet of the runner (23) is communicated with an outlet opening of a riser pipe (3); an inlet opening of the riser pipe (3) extends into the pouring liquid of a low-pressure furnace (1) to allow the pouring liquid to be poured into the cavity (21) by means of the riser pipe (3), the runner (23), and the ingates (22) in sequence under the pressure in the low-pressure furnace (1); risers (24) are provided on the upper part of the cavity (21); liquid level detectors (5) are provided in the risers (24); a liquid level detection device (6) is provided above the riser pipe (3); a pouring stop gate (7) is provided between the inlet of the runner (23) and the outlet of the riser pipe (3); the pouring stop gate (7) is connected to a pouring stop cylinder (8); the liquid level detectors (5), the liquid level detection device (6), and the pouring stop cylinder (8) are electrically connected to the control system (9). Also provided is a low-pressure mold filling gravity feeding method using the apparatus. By using the apparatus, a pressure holding process is canceled, and no backpressure will be produced even if the cavity is not filled completely, thereby improving production efficiency.
Inventors:
YANG LINLONG (CN)
WANG YUPING (CN)
WANG YUPING (CN)
Application Number:
PCT/CN2021/137372
Publication Date:
February 09, 2023
Filing Date:
December 13, 2021
Export Citation:
Assignee:
SUZHOU MINGZHI TECHNOLOGY CO (CN)
International Classes:
B22D18/04; B22D18/02
Foreign References:
| CN113618047A | 2021-11-09 | |||
| CN215902707U | 2022-02-25 | |||
| CN101966574A | 2011-02-09 | |||
| CN105436471A | 2016-03-30 | |||
| CN206898355U | 2018-01-19 | |||
| CN104959573A | 2015-10-07 | |||
| CN203664631U | 2014-06-25 | |||
| JP2003200251A | 2003-07-15 | |||
| CN104057060A | 2014-09-24 | |||
| CN110740826A | 2020-01-31 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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