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1. 发明专利

JP2003290872A Method for producing mold sealing material and mold sealing material 审中-公开
标题翻译：生产模具密封材料和模具密封材料的方法
公开(公告)号：JP2003290872A
公开(公告)日：2003-10-14
申请号：JP2002103182
申请日：2002-04-05
申请人： Sintokogio Ltd , 新東工業株式会社
发明人： KANAYAMA RYOJI , HAYASHI MASAKAZU , ANDO YUKIICHI , SHIMIZU MORIMICHI
IPC分类号： B22C9/00 , B22C5/00 , B22C5/10
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a mold sealing material be effectively utilizing dust which is generated in a green sand mold casting line and which is usually used for land fill as an industrial waste without wasting it, and to provide the mold sealing material obtained by the method.
SOLUTION: This method is provided with: a process in which water is added into the dust containing an active clay component generated in the green sand mold casting line and the obtained admixture is kneaded to bring it into a paste-state; or a process in which the water is added into the dust containing the active clay component generated in the treatment for regenerating the waste sand discharged from the green sand mold casting line and the obtained admixture is kneaded to bring it into the paste-state.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种用于生产模具密封材料的方法，其可以有效地利用在生砂模具铸造线中产生的灰尘，并且其通常用于作为工业废料的土地填埋而不浪费它，并且提供通过该方法获得的模具密封材料。解决方案：该方法具有：将水加入到在生砂模铸造线中产生的活性粘土成分的粉尘中，并将所得混合物捏合以使其成为糊状的方法; 或者在将来自生砂模铸造线排出的再生废砂的处理中产生的含有活性粘土成分的粉末和所得到的混合物中的水加入到糊料状态的处理。版权所有（C）2004，JPO

2. 发明专利

JPH05131246A MULTI-CAVITY MOLD FOR CASTING FITTING FOR PIPING 失效
公开(公告)号：JPH05131246A
公开(公告)日：1993-05-28
申请号：JP32115091
申请日：1991-11-08
申请人： SINTOKOGIO LTD
发明人： TSUCHIDA MASANOBU , ANDO YUKIICHI , NAKAMOTO IKUHIKO , KANEKO YOSHIHIRO
IPC分类号： B22C9/06 , B22C9/10 , B22C9/24
摘要： PURPOSE:To prevent remaining of the trace of a bent hole on the surface of a product and the generation of pin hole defect in the product at the time of casting plural fittings for piping by using a die assembly composed of vertical split dies and plural ring-like collapsible cores set in a product cavity in the die. CONSTITUTION:The bent hole 15 communication with a core print receiver 11 in the horizontal direction of the vertical split dies 3 is arranged and the cross sectional area of gates 21 arranged at the core prints 18 in the horizontal direction of the collapsible cores 5 is made to 5.0-7.5% of the cross sectional area of a main sprue 6 in the die 3.

3. 发明专利

JP2003094146A RECYCLING METHOD FOR MOLDING SAND FOR CASTING MOLD 审中-公开
公开(公告)号：JP2003094146A
公开(公告)日：2003-04-02
申请号：JP2001290720
申请日：2001-09-25
申请人： SINTOKOGIO LTD
发明人： KANAYAMA RYOJI , SUGIMOTO KAZUO , YOSHIDA YASUNORI , ANDO YUKIICHI
IPC分类号： B22C5/00 , B22C5/04
摘要： PROBLEM TO BE SOLVED: To provide a recycling method for molding sand for a casting mold, taking account of environmental aspects such as the re-use of waste sand which used to be dumped mostly as an industrial waste, converting it into valuables by feeding it to a green mold sand treatment line as supplementary sand. SOLUTION: The recycling method is characterized by comprising a process to recover the waste sand discharged from a molding sand processing line for casting mold, a process to produce bentonite-coated sand by mixing treatment at least with bentonite after applying regeneration treatment to the recovered waste sand, and a process to feed the bentonite-coated sand as the supplementary sand into the recovered sand in the green mold sand treatment line.

4. 发明专利

JPH08141697A METHOD FOR CASTING CAST IRON-MADE PIPE JOINT BY USING DIE 失效
公开(公告)号：JPH08141697A
公开(公告)日：1996-06-04
申请号：JP13207192
申请日：1992-04-24
申请人： SINTOKOGIO LTD , HIGASHIO MEC KK
发明人： TSUCHIDA MASANOBU , ANDO YUKIICHI , NAKAMOTO IKUHIKO , SAWA YOSHIKI , NAGAI TAKESHI
IPC分类号： B22D25/02 , B22C9/06 , B22C9/10
摘要： PURPOSE: To allow a vent hole to leave no trace behind on the surface of a product and also, to prevent the occurrence of the casting defect such as pin hole in the product at the time of casing plural cast iron-made pipe joints by using a die device consisting of a vertical split die and collapsible cores loosely fitted in plural product cavities formed on the joint surface of the dies. CONSTITUTION: The vent holes communicated with core print receivers 11 in the horizontal direction in the vertical split die are arranged. Further, the dimension of the cross sectional area of an ingate provided in core prints 18 in the horizontal direction of the collapsible core 5 is defined as 5.0-7.5% of the cross sectional area of a main sprue 6. On the wall surfaces of the product cavities 4 and sprue systems 6, 7, 9, basic coating and working coating are applied at 0.1-0.2mm and 0.05-0.1mm thicknesses respectively.

5. 发明专利

JPH07185774A LOW PRESSURE CASTING APPARATUS 失效
公开(公告)号：JPH07185774A
公开(公告)日：1995-07-25
申请号：JP35396893
申请日：1993-12-27
申请人： SINTOKOGIO LTD , TOTO LTD
发明人： SHIOSE FUMIKAZU , ANDO YUKIICHI , SHIMA MASAAKI
IPC分类号： B22D18/04
摘要： PURPOSE:To compact the equipment without being affected by heat at the operation by turning a vice upward and shifting vertical splitting metallic molds to each station of inserting of a core, casting, taking-out of a product and coating to a mold in order. CONSTITUTION:The core is inserted into a movable metallic mold 12 in the horizontal condition and the movable metallin mold 12 is ascended and matched with a fixing metallic mold 10. Successively, a vice 7 is turned at 90 deg. angle with a reversal revolutional driving machine 6 and sprues of the vertical splitting metallic molds 10, 12 are press-fit to the upper end of a stoke tube 1. In this condition, molten metal is pressurize-supplied into the vertical splitting metallic molds 10, 12 through a holding furnace 2 and the stoke tube 1 to execute the low pressure casting and the casting is held until the molten metal solidifies. Then, the vice 2 is turned at 180 deg. angle with the reversal revolutional driving machine 6 to separate the movable metallic mold 12 from the fixing metallic mold 10 and also, the cast product is dropped to a product receiving disk to take out the product. Further, the vertical splitting metallic molds 10, 12 are ascended from the lower part with an automatic mold coating machine to execute the coating to the mold and thereafter, the vice 7 is turned at 90 deg. angle and returned back with the reversal revolutional diving machine 6.

6. 发明专利

JPH10272549A DIE FOR CASTING CAST IRON PRODUCT 失效
公开(公告)号：JPH10272549A
公开(公告)日：1998-10-13
申请号：JP8115397
申请日：1997-03-31
申请人： TOYOTA MOTOR CORP , SINTOKOGIO LTD
发明人： NAKAYAMA MASAO , TODOROKI FUKUO , YAMAGUCHI EIJI , ANDO YUKIICHI
IPC分类号： B22D17/22 , B22C9/06
摘要： PROBLEM TO BE SOLVED: To prevent the breakage of the solidified shell of a base part at a contacting part of the base part with a product part at the time of pressurizing the boss part with a pressurizing pin so that the broken solidified shell of boss part is not entrapped into the product part by having a structure forming the thinner solidified shell at the part except the contacting part of the boss part with the product part than the other part in the boss part at the time of forming the solidified shell of molten cast iron in the boss part in a die. SOLUTION: The boss part 3 is formed as stepping shape composed of a first and a second boss parts 3a, 3b. The contacting part 6 of the boss part 3 with the product part 1 and the step part 8 as the contacting part between the boss parts 3a, 3b become heat spots, and even the solidified shells are formed at the contacting part 6 and the step part 8, these parts develop thin solidified shell 5. At the time of pressurizing the boss part 3 with the pressurizing pin 2, since the solidified shell 5 at the step part 8 is nearer to the pressurizing pin 2, before transmitting the stress from the pressurizing pin 2 to the solidified shell 5 at the contacting part 6, this stress is transmitted to the solidified shell 5 at the step part 8, and the solidified shell 5 at the step part 8 is broken. Since the broken solidified shell 5 is incorporated in the boss part, it is not entrapped in the product part 1.

7. 发明专利

JPH07251239A METHOD FOR COATING DIE AND COATING DEVICE USED FOR THIS DIE 失效
公开(公告)号：JPH07251239A
公开(公告)日：1995-10-03
申请号：JP4424594
申请日：1994-03-15
申请人： TOTO LTD , SINTOKOGIO LTD
发明人： SHIMAMURA NOBUO , SHIMA MASAAKI , SHIOSE FUMIKAZU , ANDO YUKIICHI
IPC分类号： B22D17/20 , B22C23/02 , B29C33/58
摘要： PURPOSE:To facilitate coating in a die having a little uneven coat and to obtain good quality of a casting by pulling down the die or descending a coating vessel after dipping a cavity surface directed downward into the coating vessel and drying the coating liquid in this condition. CONSTITUTION:A split die 3 is dipped into the coating vessel 2 while rotating so that the cavity surface directs downward and then, gas of steam, etc., generated on the cavity surface is escaped upward without remaining in the cavity. Further, the development of the staying of the coating liquid can be prevented by drying in the condition of directing the cavity surface downward. Further, a stirring means for coating liquid is arranged in the coating vessel 2 and a control means for stopping the stirring means in the coating vessel in the interval from starting the dipping of the split die 3 into the coating liquid to pulling out the sectional die is provided. By this method, the coating liquid is not deposited and piled in the casting vessel and the coating on the cavity surface in the die can uniformly be coated without developing unevenness and the precision of the casting is improved.

8. 发明专利

JPH04167959A MANUFACTURE OF METAL-MADE PIPE JOINT 失效
公开(公告)号：JPH04167959A
公开(公告)日：1992-06-16
申请号：JP29667490
申请日：1990-11-01
申请人： SINTOKOGIO LTD
发明人： OKUMURA KIYOSHI , ANDO YUKIICHI , NAKAMOTO IKUHIKO
IPC分类号： B22C9/06 , B22D27/04
摘要： PURPOSE:To improve the yield and to obtain the whole chilled structure of a casting by casting molten metal containing the specific component into a metallic mold having the specific thermal conductivity under the specific condition. CONSTITUTION:The molten metal containing 3.0-3.8% C, 1.5-2.5% Si is cast by using the water cooled copper alloy metallic mold made of the copper alloy material having 0.2-0.8cal/cm.sec. deg.C the thermal conductivity. As condition of the casting, the pouring of molten metal is started at 170-190 deg.C the metallic mold temp. raises to 200-250 deg.C, water pouring to the metallic mold is started. The metallic mold temp. further raises in little and reaches to the peak and starts, to drop, and when the metallic mold temp. reaches to 210-250 deg.C, the water pouring to the metallic mold is temporarily stopped. After passing the fixed time, the water pouring and interruption of the water pouring are repeated and dropping curve of the metallic mold temp. is finely adjusted, and when the metallic mold temp. reaches to 170-190 deg.C, the casting is taken out from the metallic mold.

9. 发明专利

JPH07303954A STOKE BODY FOR LOW PRESSURE CASTING APPARATUS 失效
公开(公告)号：JPH07303954A
公开(公告)日：1995-11-21
申请号：JP12458894
申请日：1994-05-12
申请人： SINTOKOGIO LTD
发明人： MORIMITSU HIDEKI , INOUE YOSHIAKI , ANDO YUKIICHI , NAKAMOTO IKUHIKO
IPC分类号： B22D18/04 , B22D19/00
摘要： PURPOSE:To obtain a stoke body for low pressure casting apparatus which does not develop the air leakage and reduces the defective casting, by cas-in- casting a collar part of the stoke with a high m.p. metal to form the flange. CONSTITUTION:The silicon nitride-made collar part 8 is integrally formed at the upper position of the stoke 7 made of the same silicon nitride as ceramic. The collar part 8 of the stoke 7 is cast-in with the high m.p. metal-made flange 9 whose upper surface is the same plane as the upper end surface of the stoke 7 and lower surface is lower position than the lower surface of the collar part 8 to form the thicker thickness and outer diameter is larger than the diameter of the collar part 8 to form a columnar state, so as to become integrated form on the outer periphery of the collar part 8. By this constitution, the stoke body for low pressure casting apparatus in which the durable strength to the repeated pressing pressure is high and also, since a heat resistant seal is not used, operation for changing the seal is unnecessary and further, the air leakage is not developed and the defective casting, such as low hole, can be restrained is obtd.

10. 发明专利

JPH07251257A METHOD FOR TAKING OUT CAST PRODUCT FROM LOW PRESSURE CASTING MACHINE AND ITS DEVICE 失效
公开(公告)号：JPH07251257A
公开(公告)日：1995-10-03
申请号：JP4423894
申请日：1994-03-15
申请人： TOTO LTD , SINTOKOGIO LTD
发明人： SHIMAMURA NOBUO , SHIMA MASAAKI , SHIOSE FUMIKAZU , ANDO YUKIICHI
IPC分类号： B22D18/04 , B22D29/04
摘要： PURPOSE:To enable the safe takeout to be conducted without damaging a cast product by making the layer inner diameter of a stroke layer than the diameter of a sprue part in a joint metallic mold, hooking a takeout jig in a cast product takeout device from the lower surface to a flange part for hooking of the sprue part of the cast product formed with the metallic mold, hanging up and taking out. CONSTITUTION:The takeout jig 8b of the cast product takeout means 8 is shifted downward so as to come to the lower position of the flange part 35b formed in the cast product 35 between a fixing side split die 20a and a movable side split die 20b. In this condition, the movable side split die 20b is closed to near position of the takeout jig 8b and thereafter, the cast product 35 is pushed out from the movable side split die 20b by working an ejector 28 of the movable side split die 20b, and the sprue flange part 35b is hooked from the lower surface with the takeout jig 8b. Further, after opening the movable side split die 20b to the position where does not bring into contact with the cast product 35, while ascending the takeout jig 8a, the cast product takeout means 8 is ascended and horizontally shifted to take out the formed cast product.

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