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1. 发明授权

US09636849B2 Mold release agent for water glass-containing sand mold molding 有权
公开(公告)号：US09636849B2
公开(公告)日：2017-05-02
申请号：US14767748
申请日：2014-10-24
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA , TETRA CO., LTD.
发明人： Masaomi Mitsutake , Hirotsune Watanabe , Masaki Okada , Hiroyuki Matsubara
IPC分类号： B29C33/60 , B22C3/00 , C07C55/02 , C08G77/04 , B22C1/00 , B22C9/02 , B22C1/18
CPC分类号： B29C33/60 , B22C1/00 , B22C1/188 , B22C3/00 , B22C9/02 , C07C55/02 , C08G77/04
摘要： [Task] There is provided a mold release agent for forming a water glass-containing sand mold with high release properties which can prevent attachment of a water glass to a flask and the accumulation of the water glass on the flask in the formation of the sand mold when using the water glass as a binder.[Solution] The mold release agent for forming the water glass-containing sand mold is structured to contain an organic compound, the organic compound having a proton-donating functional group that reacts with the water glass to produce silicon dioxide. The water glass contained in a raw material for the sand mold reacts with the proton-donating functional group contained in the mold release agent so as to produce silicon dioxide. Since silicon dioxide has no adhesion, it can prevent that the attachment (fixing) of the water glass contained in a formed sand mold to the flask and the accumulation of the water glass on the flask.

2. 发明授权

US09962868B2 Device for forming foamed kneaded material and method for forming foamed kneaded material 有权
公开(公告)号：US09962868B2
公开(公告)日：2018-05-08
申请号：US14410003
申请日：2013-04-11
申请人： SINTOKOGIO, LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Yusuke Kato , Toshihiko Zenpo , Toshio Kanno , Hirotsune Watanabe , Tomokazu Suda , Yasutake Nagata , Masaomi Mitsutake , Takumi Maegawa
IPC分类号： B29C44/02 , B01F3/04 , B01F15/02 , B22C15/08
CPC分类号： B29C44/02 , B01F3/04446 , B01F15/0237 , B22C7/023 , B22C15/08 , B29C44/3442
摘要： First, a supply device supplies a foamed kneaded material into a cylinder. Then, in a state in which an internal space of the cylinder is communicated with a pattern forming space of a mold, the piston disposed in the cylinder is moved toward the foamed kneaded material side while opening a gas release hole formed piercing through the piston. Then, at a timing when the piston has reached an expected position where the piston is expected to be on contacting the foamed kneaded material supplied into the cylinder, the gas release hole is closed by an open-close plug. Then, the foamed kneaded material supplied into the cylinder is pressed toward the pattern forming space side of the mold by moving the piston toward the foamed kneaded material side.

3. 发明授权

US09789533B2 Sand for casting mold, manufacturing method for sand casting-mold, and core for metal casting 有权
公开(公告)号：US09789533B2
公开(公告)日：2017-10-17
申请号：US14442233
申请日：2013-11-08
申请人： SINTOKOGIO, LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Tomohiro Aoki , Yusuke Kato , Takehiko Matsumoto , Kenichiro Mori , Toshihiko Zenpo , Tomokazu Suda , Masaomi Mitsutake , Takumi Maegawa , So Nakayama , Masashi Morikawa , Hirotsune Watanabe
IPC分类号： B22C1/02 , B22C9/02 , B22D21/04 , B22C9/10
CPC分类号： B22C1/02 , B22C9/02 , B22C9/10 , B22D21/04
摘要： Sand for a casting mold including sand, a binder, and an inorganic compound particle having poor water solubility and generating a gas, which is at least one of water vapor or carbon dioxide gas, by heat from a molten metal.

4. 发明授权

US09931691B2 Molding method of sand mold using foamed sand, molding die, and sand mold 有权
公开(公告)号：US09931691B2
公开(公告)日：2018-04-03
申请号：US15029116
申请日：2014-10-15
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Masaki Okada , Masaomi Mitsutake , Hirotsune Watanabe , Masashi Morikawa
IPC分类号： B22C9/02 , B22C9/10 , B22C13/08
CPC分类号： B22C9/02 , B22C9/10 , B22C9/108 , B22C13/08
摘要： A molding method of a sand mold including a hardened layer in a predetermined thickness range from an outer layer part, includes: forming a cavity and a filling opening of a die so that a dimension, which is a largest dimension between two intersections of straight lines passing through a section of a boundary portion between the cavity and the filling opening of the die, with respect to an outside line of the section, is less than a predetermined ratio with respect to a thickness dimension of that part of a product portion of the sand mold from which a blowing opening molded in the filling opening projects, the product portion being formed by the cavity of the die; and filling foamed sand into the cavity from the filling opening of the die.

5. 发明申请

US20150197044A1 DEVICE FOR FORMING FOAMED KNEADED MATERIAL AND METHOD FOR FORMING FOAMED KNEADED MATERIAL 有权
标题翻译：用于形成泡沫材料的装置和形成泡沫材料的方法
公开(公告)号：US20150197044A1
公开(公告)日：2015-07-16
申请号：US14410003
申请日：2013-04-11
申请人： SINTOKOGIO, LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Yusuke Kato , Toshihiko Zenpo , Toshio Kanno , Hirotsune Watanabe , Tomokazu Suda , Yasutake Nagata , Masaomi Mitsutake , Takumi Maegawa
IPC分类号： B29C44/02 , B01F15/02 , B01F3/04
CPC分类号： B29C44/02 , B01F3/04446 , B01F15/0237 , B22C7/023 , B22C15/08 , B29C44/3442
摘要： First, a supply device supplies a foamed kneaded material into a cylinder. Then, in a state in which an internal space of the cylinder is communicated with a pattern forming space of a mold, the piston disposed in the cylinder is moved toward the foamed kneaded material side while opening a gas release hole formed piercing through the piston. Then, at a timing when the piston has reached an expected position where the piston is expected to be on contacting the foamed kneaded material supplied into the cylinder, the gas release hole is closed by an open-close plug. Then, the foamed kneaded material supplied into the cylinder is pressed toward the pattern forming space side of the mold by moving the piston toward the foamed kneaded material side.
摘要翻译：首先，供给装置将发泡混炼物供给到气缸中。然后，在气缸的内部空间与模具的图案形成空间连通的状态下，设置在气缸中的活塞朝向发泡捏合材料侧移动，同时打开穿过活塞形成的气体释放孔。然后，在活塞达到活塞预期与供给到气缸中的发泡混炼物接触的期望位置的时刻，气体释放孔被开闭塞关闭。然后，通过将活塞朝向发泡捏合材料侧移动，供给到气缸中的发泡捏合材料被压向模具的图案形成空间侧。

6. 发明授权

US11084088B2 Core manufacturing apparatus 有权
公开(公告)号：US11084088B2
公开(公告)日：2021-08-10
申请号：US17026524
申请日：2020-09-21
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Naoya Kajita , Junji Asano , Masahiro Umeda , Shota Nagashima , Masaomi Mitsutake
IPC分类号： B22C5/14 , B22C5/04 , B22C9/10 , B22C15/08
摘要： A core manufacturing apparatus includes: a storage unit that stores core sand; a kneading vessel configured to be fed with the core sand; a kneading rod configured to knead the core sand; and a piston configured to eject the kneaded core sand. The kneading vessel is capable of transitioning between a horizontally lying state and a vertically standing state and configured to be fed with the core sand in the horizontally lying state. The piston is configured to eject the core sand downward and pack it into a mold with the kneading vessel in the vertically standing state. The storage unit includes a valve that opens and closes the feed port. The storage unit is coupled to the kneading vessel so as to be turnable around a second shaft and configured to maintain the same posture with the valve in contact with the feed port while the kneading vessel turns.

7. 发明申请

US20140284015A1 METHOD FOR MOLDING SAND MOLD AND SAND MOLD 有权
标题翻译：铸造模具和砂模的方法
公开(公告)号：US20140284015A1
公开(公告)日：2014-09-25
申请号：US14360577
申请日：2012-11-27
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA , SINTOKOGIO, LTD.
发明人： Masaomi Mitsutake , Hirotsune Watanabe , Tomokazu Suda , Yusuke Kato , Toshihiko Zenpo
IPC分类号： B22C9/02 , B22C1/00
CPC分类号： B22C1/00 , B22C1/188 , B22C7/06 , B22C9/02
摘要： 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.
摘要翻译：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。

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