公开(公告)号：US11986878B2

公开(公告)日：2024-05-21

申请号：US17258635

申请日：2019-04-24

Applicant: Sintokogio, Ltd. ,  Toyota Jidosha Kabushiki Kaisha

Inventor： Youhei Noguchi ,  Koji Sakou ,  Hirotaka Kurita ,  Takashi Nagaya ,  Hirotsune Watanabe ,  Katsutoshi Okumura

IPC: B22C23/02 ,  B22C9/20 ,  B22D43/00

CPC classification number: B22C23/02 ,  B22C9/20 ,  B22D43/007

Abstract: When molding surfaces (50A) of a pair of dies (50) are to be cleaned by air-blowing, air is blown towards the molding surfaces (50A) from blowing nozzles (22A) of a cleaning blowing function portion (22) while a moving body (16) is reciprocatingly moved by driving force of a driving mechanism (18). When a parting agent is to be applied to the molding surfaces (50A) of the pair of dies (50), the mold release agent is jetted out towards the molding surfaces (50A) from spraying nozzles (24A) of a parting agent application function portion (24) while the moving body (16) is reciprocatingly moved by the driving force of the driving mechanism (18). In both of these situations, at the same time as the treatment of the molding surfaces (50A), a cleaning brush (32) reciprocatingly moves together with the moving body (16) and sweeps a device floor surface (12).

公开(公告)号：US20210270664A1

公开(公告)日：2021-09-02

申请号：US17258622

申请日：2019-06-05

Applicant: Sintokogio, Ltd. ,  Toyota Jidosha Kabushiki Kaisha

Inventor： Youhei Noguchi ,  Koji Sakou ,  Hirotaka Kurita ,  Takashi Nagaya ,  Hirotsune Watanabe ,  Takumi Maegawa

IPC: G01G13/06 ,  G01G13/24

Abstract: An opening portion (34) that is formed so as to pass-through an opening/closing plate portion (32) of a gate (30), can be disposed at a region overlapping a lower end opening (24A) of a hopper (20). The opening portion (34) is structured by a first pass-through portion (34A), and a second pass-through portion (34B) that is formed so as to be continuous with the first pass-through portion (34A). A width, in a direction orthogonal to a lined-up direction in which the first pass-through portion (34A) and the second pass-through portion (34B) are lined up, is narrower than the first pass-through portion (34A). Further, a driving mechanism (40) moves the gate (30) such that the opening/closing plate portion (32) moves in the lined-up direction as seen in a plan view. Based on a preset target value of weight of sand, a control section (18) controls the driving mechanism (40) so as to decrease an amount of overlap of the opening portion (34) of the gate (30) and the lower end opening (24A) of the hopper (20) in a stepwise manner in accordance with an increase in the weight of the sand measured by a scale.

公开(公告)号：US20140284015A1

公开(公告)日：2014-09-25

申请号：US14360577

申请日：2012-11-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  SINTOKOGIO, LTD.

Inventor： Masaomi Mitsutake ,  Hirotsune Watanabe ,  Tomokazu Suda ,  Yusuke Kato ,  Toshihiko Zenpo

IPC: B22C9/02 ,  B22C1/00

CPC classification number: B22C1/00 ,  B22C1/188 ,  B22C7/06 ,  B22C9/02

Abstract: By mixing, stirring and kneading, with water glass (11) as a binder, sand (7), a surfactant (9), and water (10), foamed sand (S) is generated. The foamed sand (S) is packed in a cavity of a metallic mold and solidified to form a sand mold. By using the sand mold, aluminum is cast. By using water glass that is an inorganic binder, during casting, harmful gas and odor are not generated. Further, when a molar ratio n of water glass (Na20 nSiO2 mH2O) is adjusted in the range of 0.65 to 1.30, a quantity of water (H2O) generated by heating water glass with a high temperature melt during casting can be suppressed. Thereby, hydrogen gas (H2) according to a reaction between water (H2O) and aluminum (Al) can be suppressed from being generated and casting quality can be improved.

Abstract translation: 通过混合，搅拌和捏合作为粘合剂的水玻璃（11），产生砂（7），表面活性剂（9）和水（10），发泡砂（S）。 将发泡砂（S）包装在金属模具的空腔中并固化以形成砂模。 通过使用砂模，铸铝。 通过使用无机粘合剂的水玻璃，在铸造时不会产生有害气体和气味。 此外，当水玻璃（Na 2 O nSiO 2·mH 2 O）的摩尔比n调节在0.65〜1.30的范围内时，可以抑制通过在浇铸时用高温熔体加热水玻璃而产生的水（H 2 O）的量。 由此，能够抑制水（H 2 O）与铝（Al）的反应的氢气（H 2）的产生，能够提高铸造品质。