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1. 发明公开

EP3586994A1 WATER INJECTION AND KNEADING SYSTEM FOR GREEN MOLDING SAND 有权
公开(公告)号：EP3586994A1
公开(公告)日：2020-01-01
申请号：EP17898324.3
申请日：2017-11-16
申请人： Sintokogio, Ltd.
发明人： OGURA Yuichi , HARADA Hisashi
IPC分类号： B22C5/04 , B22C9/00 , G01N27/04
摘要： [Problem] To provide a water supply and kneading system that produces kneaded sand having more stable properties by more appropriately controlling the amount of water supplied to green sand.
[Solution] A water supply and kneading system for green sand, comprising: a weighing hopper that stores green sand that has been weighed; a kneading machine that kneads the green sand and water; a sand loading means for releasing the green sand in the weighing hopper into the kneading machine, or shutting off the release; a water supply device that supplies water to the green sand in the kneading machine; a moisture sensor that comprises a pair of electrodes and measures the moisture content of the green sand stored in the weighing hopper by measuring an electric potential difference between the electrodes; and a kneading control device that controls the amount of water supplied by the water supply device and controls the sand loading means on the basis of the output of the moisture sensor.

2. 发明公开

EP3456432A1 PROPERTY ADJUSTING SYSTEM AND PROPERTY ADJUSTING METHOD FOR KNEADED SAND 有权
公开(公告)号：EP3456432A1
公开(公告)日：2019-03-20
申请号：EP17795784.2
申请日：2017-02-13
申请人： Sintokogio, Ltd.
发明人： OGURA Yuichi , HARADA Hisashi
IPC分类号： B22C5/08 , B22C1/00
摘要： [Problem] To provide a kneaded sand property adjusting system and property adjusting method capable of accurate kneading control.
[Solution] Provided is a kneaded sand property adjusting system 1 comprising: a kneading device 6; a kneaded sand storage hopper 10 that stores kneaded sand that was kneaded; a molding device 24 that molds the kneaded sand conveyed from the kneaded sand storage hopper 10 as molding sand; a control device 25 that controls water injection until a property of the kneaded sand being kneaded meets a kneaded sand target property; and kneaded sand amount measuring instruments 11-14 that measure the amount of kneaded sand stored in the kneaded sand storage hopper 10, wherein the control device 25 stores the batch number of each kneaded batch and the kneaded sand property measured at the time of kneading of each kneaded batch in association with each other, calculates the batch number of the kneaded batch that corresponds to the molding sand being loaded into the molding device 24 on the basis of the amount of kneaded sand measured by the kneaded sand amount measuring instruments 11-14, associates the property of the molding sand with the kneaded sand property that was stored on the basis of the batch number that was calculated, and corrects the target property on the basis of the values of the properties.

3. 发明公开

EP2712690A1 CORE SAND FILLING DEVICE AND CORE SAND FILLING METHOD IN CORE MAKING MACHINE 有权转让
标题翻译：制芯机中的核心砂填充装置和核心砂填充方法
公开(公告)号：EP2712690A1
公开(公告)日：2014-04-02
申请号：EP12793868.6
申请日：2012-05-18
申请人： Sintokogio, Ltd.
发明人： KATO Shigeyoshi , TSUZUKI Shuichi , HARADA Hisashi
IPC分类号： B22C15/24 , B22C9/10 , B22C13/08
CPC分类号： B22C9/10 , B22C7/06 , B22C13/08 , B22C15/24 , B22C19/04
摘要： There is provided a core sand filling device in an under-blow type core making machine in which core sand is blown from a lower part of a core box to an upper part of the core box. The core sand filling device includes the core box, a blow head which is placed below the core box so as to move up and down in a relative manner to the core box and divided into a sand blowing chamber and a sand storage chamber that are communicatively connected to each other, a compressed air supply unit which is communicatively connected to the sand storage chamber and supplies compressed air into the sand storage chamber, an aeration air supply unit which is communicatively connected to the sand blowing chamber and supplies into the sand blowing chamber aeration air for suspending and fluidizing core sand inside the sand blowing chamber, and an exhaust valve which is communicatively connected to the sand blowing chamber and exhausts compressed air remaining in the sand blowing chamber.
摘要翻译：本发明提供了一种在下吹式制芯机中的芯砂填充装置，其中芯砂从芯盒的下部吹到芯盒的上部。芯砂填充装置包括芯盒，位于芯盒下方的吹气头，可相对于芯盒上下移动，分为通风式的吹砂室和储砂室压缩空气供应单元，其连通地连接到所述储砂室并将压缩空气供应到所述储砂室中;曝气供气单元，其与所述喷砂室连通地连接并供应到所述喷砂室中使砂芯内部的芯砂悬浮流化的曝气空气;以及排气阀，该排气阀与喷砂室连通并排出残留在喷砂室内的压缩空气。

4. 发明公开

EP3513887A1 RECOVERED-SAND COOLING SYSTEM AND RECOVERED-SAND COOLING METHOD 审中-公开
公开(公告)号：EP3513887A1
公开(公告)日：2019-07-24
申请号：EP17850794.3
申请日：2017-09-07
申请人： Sintokogio, Ltd.
发明人： OGURA Yuichi , SAKAI Tsuyoshi , HARADA Hisashi
IPC分类号： B22C5/08
摘要： [Problem] To provide a return sand cooling system and return sand cooling method capable of reliably cooling return sand.
[Solution] Provided is a return sand cooling system 1 that cools return sand and adjusts the moisture content of cooled return sand, wherein the return sand cooling system 1 comprises: a sand moisture and temperature measuring instrument 2 that measures the moisture content and temperature of the return sand; a control device 3 that determines an appropriate water addition amount, which is an amount of water to be added to the return sand; a water-sprinkling cooling device 4, 5 that adds water of the appropriate water addition amount to the return sand and cools the return sand by the latent heat of vaporization of water to obtain the cooled return sand; an air introducing device 6 that introduces air into the water-sprinkling cooling device 4, 5; and an introduced air temperature and humidity measuring instrument 7 that measures the temperature and humidity of introduced air to be introduced into the water-sprinkling cooling device 4, 5; the control device 3 determining the appropriate water addition amount on the basis of the moisture content and temperature of the return sand, and the temperature and humidity of the introduced air.

5. 发明公开

EP2826574A1 CORE SAND FILLING METHOD 有权转让
标题翻译： KERNSANDFÜLLVERFAHREN
公开(公告)号：EP2826574A1
公开(公告)日：2015-01-21
申请号：EP13794598.6
申请日：2013-02-07
申请人： Sintokogio, Ltd.
发明人： KATO Shigeyoshi , HARADA Hisashi
IPC分类号： B22C15/24 , B22C9/10 , B22C13/16
CPC分类号： B22C9/10 , B22C13/12 , B22C13/16 , B22C15/24 , B22C19/04
摘要： When employing an under-blow scheme for blowing core sand into a core box located on the upper side, a core sand filling method which can favorably fill the core box with core sand, thereby contributing to improving the efficiency in manufacturing cores, is provided.
The core sand filling method comprises a step of operating an aeration air supply means 9A, so as to float and fluidize core sand within a sand blow chamber 4 and, when a pressure Pf of the sand blow chamber 4 measured by the first pressure sensor 14 reaches a first pressure P1, operating a compressed air supply means 7A and a step of stopping the aeration air supply means 9A and compressed air supply means 7A from operating when each of the pressure Pf within the sand blow chamber 4 and a pressure Pc within a sand storage chamber 5 is a second pressure P2 or higher while a differential pressure ΔP = Pc - Pf is a third pressure P3 or lower.

6. 发明授权

EP2712690B1 CORE SAND FILLING DEVICE AND CORE SAND FILLING METHOD IN CORE MAKING MACHINE 有权转让
标题翻译：制芯机中的核心砂填充装置和核心砂填充方法
公开(公告)号：EP2712690B1
公开(公告)日：2016-06-29
申请号：EP12793868.6
申请日：2012-05-18
申请人： Sintokogio, Ltd.
发明人： KATO Shigeyoshi , TSUZUKI Shuichi , HARADA Hisashi
IPC分类号： B22C15/08 , B22C15/24 , B22D47/02 , B22C7/06 , B22C9/10 , B22C13/08 , B22C19/04
CPC分类号： B22C9/10 , B22C7/06 , B22C13/08 , B22C15/24 , B22C19/04

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