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1. 发明专利

JPH09287033A TREATMENT OF WASTE CONTAINING OXIDE AND METHOD THEREFOR 失效
公开(公告)号：JPH09287033A
公开(公告)日：1997-11-04
申请号：JP12567396
申请日：1996-05-21
申请人： TOYOTA MOTOR CORP , AICHI STEEL WORKS LTD , TOYOKIN KK
发明人： OKADA YUJI , SHIRAKAWA HIROICHI , OKADA MASAMICHI , HARA TOSHIKATSU , SASAMOTO HIROHIKO , SUZUKI KAZUHIRO
IPC分类号： B09B3/00 , C22B5/16 , C22B7/00 , C22B7/02 , C22B13/02 , C22B19/30
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for removing and recovering zinc and lead from a waste containing zinc and lead in an oxide state. SOLUTION: This treatment method comprises vaporizing and recovering zinc and lead converted into pure metals by mixing a reducing agent 2 with the waste containing zinc and lead in the oxide state such as a steel making dust 1, charging into a heat treating furnace 3, evacuating the furnace 3 and heating to reduce zinc and lead. The waste and the reducing agent are charged into the furnace 3 preferably after being mixed and briquetted. The recovered zinc or lead is preferably ingotted by providing an ingot case in a recovering device 5. The furnace 3 is preferably a rotary furnace and is preferably intermittently rotated.

2. 发明专利

JPH09248653A CASTING METHOD USING RESIN CORE 失效
公开(公告)号：JPH09248653A
公开(公告)日：1997-09-22
申请号：JP6128096
申请日：1996-03-18
申请人： TOYOTA MOTOR CORP , AISIN SEIKI
发明人： SHIRAKAWA HIROICHI , OKADA MASAMICHI , OKADA YUJI
IPC分类号： B22D17/22 , B22C1/00 , B22C9/10 , B29C33/76 , B29C45/57
摘要： PROBLEM TO BE SOLVED: To restrain the development of shrinkage in a part having low cooling rate, such as the thick part, in a cast product. SOLUTION: A resin core having a part 1a corresponding to the part 2a having low cooling rate, such as the thick part of the cast product 2 and made of a metal, is used to execute casting. This resin core part 1a is made displaceable and at the stage of starting the solidification of molten metal, this resin core part 1a is pressed to the product 2 side to press the pant 2a, having the low cooling rate of the cast product 2. By using a pressurizing pin provided in a metallic mold 3, the part 2a is pressed at the stage of starting the solidification of molten metal.

3. 发明专利

JPH0924454A CASTING DEVICE 失效
公开(公告)号：JPH0924454A
公开(公告)日：1997-01-28
申请号：JP17474595
申请日：1995-07-11
申请人： TOYOTA MOTOR CORP
发明人： OKADA MASAMICHI
IPC分类号： B22D39/02 , B22D17/14 , B22D17/30 , B22D17/32
摘要： PROBLEM TO BE SOLVED: To flow molten metal into a cylinder sleeve with negative pressure from a vacuum source after weighing a prescribed quantity and also, to prevent the flow of the molten metal into a cavity before injection of the molten metal by driving a plunger. SOLUTION: The prescribed quantity of the molten metal is supplied into the cylinder sleeve 4 by damming up the molten metal which is flowed from an opening hole 5 with the negative pressure from the vacuum source, with an advanced molten metal weighing member 6 and plugging the opening hole 5 with the plunger 40 through a detecting signal from a molten metal detecting sensor 60. Successively, the molten metal stored by retreating the molten metal weighing member 6 from the cylinder sleeve 4 can be filled up into a cavity 10 with the plunger 40.

4. 发明专利

JPH0890157A RESIN CORE AND ITS PRODUCTION 失效
公开(公告)号：JPH0890157A
公开(公告)日：1996-04-09
申请号：JP22795194
申请日：1994-09-22
申请人： TOYOTA MOTOR CORP
发明人： OKADA YUJI , OKADA MASAMICHI , SHIRAKAWA HIROICHI , TOMITAKA SHUICHI , KATO TAKAYUKI
IPC分类号： B22D17/22 , B22C3/00 , B22C9/10 , B22D29/00
摘要： PURPOSE: To provide a resin core with which casting with higher accuracy is possible without the possibility of erosion and deformation of the resin core in spite of contact with molten metal of a high temp. and high pressure and which is easily separable from castings. CONSTITUTION: The resin core 2 is arranged in a cavity and the molten metal is poured into this cavity. The molten metal poured into the cavity comes into contact with stainless steel foil 6 clad on the surface of the resin core 2 and does not come into contact with a resin core body 4 and, therefore, the erosion and deformation of the resin core body 4 are surely prevented and the resin core 2 keeps surely maintaining the prescribed shape before the molten metal solidifies. The temp. of the resin core body 4 is elevated by heat even after solidification of the molten metal and the temp. at which the resin core is plasticized is attained at some point of time. The left end of the supporting part 2A of the resin core 2 is clamped by a drawing means at the point of this time and is drawn leftward. Branch parts 2B, 2C are thereby plastically deformed and the resin core is drawn from the left end of a product W and is thus separated from the product W.

5. 发明专利

JPH0857582A CORE AND REMOVING METHOD THEREOF 失效
公开(公告)号：JPH0857582A
公开(公告)日：1996-03-05
申请号：JP19962594
申请日：1994-08-24
申请人： TOYOTA MOTOR CORP
发明人： OKADA MASAMICHI , OKADA YUJI , SHIRAKAWA HIROICHI , TOMITAKA SHUICHI
IPC分类号： B22D17/22 , B22C1/00 , B22C9/10 , B22D29/00
摘要： PURPOSE: To properly execute high pressure casting, further to prevent corrosion of a product and equipment in dissolving/removing a core. CONSTITUTION: The core (n), which is used in the casting method to cast a product by pouring molten metal in cavity at high pressure, while molten metal is forcibly filled in cavity and then the part in contact with the core (n) is solidified, is formed with a water soluble polymer so that the deforming quantity can maintain the strength enough to satisfy the shape precision required for a product (w) in resisting to high pressure and high temp. of molten metal. Thus, when high pressure force is applied, the core (n) is not deformed out of the shape precision required for a product (w). Also, when the core (n) is taken out from a product (w), the core (n) is dissolved into water, because polymer water solution is not corrosive, corrosion of a product (w) and each part of production equipment is not likely of problem.

6. 发明专利

JPH081298A CASTING METHOD AND DEVICE FOR PULLING OUT CORE USED IN THIS METHOD 失效
公开(公告)号：JPH081298A
公开(公告)日：1996-01-09
申请号：JP13881894
申请日：1994-06-21
申请人： TOYOTA MOTOR CORP
发明人： OKADA MASAMICHI , OKADA YUJI , SHIRAKAWA HIROICHI , TOMITAKA SHUICHI , MURAKAMI KOJI
IPC分类号： B22D17/22 , B21D28/00 , B22C9/10 , B22D29/00 , B22D31/00
摘要： PURPOSE:To eliminate the need of a special process in a casting method by executing the pulling-out of a core in a trimming process, at the time of casting a product by press-charging molten metal into a cavity inserted with the core at high pressure. CONSTITUTION:The core (n) maintains a prescribed strength during a time since the molten metal is press-charged into the cavity until the part of the molten metal in contact with the core is solidified (characteristic of the molten metal A), i.e., during a time of T1, and even if the high pressure of the molten metal is applied to the core (n), the core is not deformed to such an extent that shape precision becomes lower than that required for the product X (characteristic of the core G1). Further, the average strength of the core (n) is lowered by the heat of the molten metal during the lapse of a time of T2 after the molten metal is solidified at the part in contact with the core (n) (after the lapse of a time of T1), the plastic deformation of the core is generated to such an extent that the core (n) can pass through an under-cut part of the product X and yet the mutual coupling force, by which one end can be pulled out by pulling out the other end, is imparted. Therefore, the core can satisfactorily be pulled out of the product by giving the pulling force to the core at the suitable timing during th lapse of a time of T2 after the lapse of a time of T1.

7. 发明专利

JPH05138323A DEVICE FOR EXCHANGING DIE IN INJECTION FORMING APPARATUS 失效
公开(公告)号：JPH05138323A
公开(公告)日：1993-06-01
申请号：JP32838991
申请日：1991-11-18
申请人： UBE INDUSTRIES , TOYOTA MOTOR CORP
发明人： MORIYA TOSHIAKI , TADA SHOJI , OKADA MASAMICHI , MANABE JUNJI , TAKEDA MICHIHARU
IPC分类号： B22D17/22 , B29C45/17 , B29C45/26
摘要： PURPOSE:To provide a device, in which any complicated die having a core cylinder, etc., can safely and easily be exchanged. CONSTITUTION:A fixed plate side die receiving table 8 for advancing/retreating by driving an air cylinder 12 in a machine base 1 is arranged adjacent the fixed plate 2. A movable plate side die receiving table 9 for advancing/retreating on a guide shoe 4a of the movable plate 4 is arranged adjacent the movable plate 4. A connecting rod for connecting the fixed plate side die receiving table 8 and the movable plate side die receiving table 9 as fittable/detachable is arranged at the lower position. One end of this connecting rod is fixed and the other end is formed as fittable/detachable. Plural pieces of rollers for rolling the dies 6, 7 are parallel arranged at the upper end parts of the fixed side die receiving table 8 and the movable plate side die receiving table 9.

8. 发明专利

JPS63180354A METHOD FOR MEASURING GAS PRESSURE IN CAVITY 失效
公开(公告)号：JPS63180354A
公开(公告)日：1988-07-25
申请号：JP1097987
申请日：1987-01-20
申请人： TOYOTA MOTOR CORP
发明人： OKADA MASAMICHI , SEKI AKIRA
IPC分类号： B22D17/22 , B22D17/32
摘要： PURPOSE:To accurately measure gas pressure in a cavity at the time of actual casting by fitting a sensor measuring the gas pressure near a chill bent insert die or a valve in a gas exhaust passage connecting with the cavity in a die for die casting. CONSTITUTION:The cavity 3 is shaped by joining the dies 1, 2 fixed to die fitting parts 4, 5 in the die casting machine. On the other hand, molten metal is supplied from a molten supplying hole 7 in a sleeve 6 fitted to the fitting part 5 and pressed in the cavity 3 by a piston and plunger 11, to execute casting. In the above die casting, the chill bent insert dies 15, 16 having corrugating plate-shape part 15a, 16a, fitted to the dies 1, 2 are connected with the cavity 3 and the sensor 13 detecting the gas pressure is fitted. The molten metal, which is cast from the chill bent insert dies 15, 16, is solidified and cut off to fill up in the cavity 3. In this way, only gas is pushed out and the pressure is measured by the sensor 13 and outputted to an output meter 14 and if necessary, the buzzer 17 is worked.

9. 发明专利

JPH09108814A CORE FOR CASTING AND CASTING METHOD 失效
公开(公告)号：JPH09108814A
公开(公告)日：1997-04-28
申请号：JP26550995
申请日：1995-10-13
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： ISHIKAWA TSUTOMU , OKADA YUJI , OKADA MASAMICHI
IPC分类号： B22D17/22 , B22C9/10 , B22D29/00
摘要： PROBLEM TO BE SOLVED: To provide a core for casting which contributes to the lightening of a cast product remaining the metallic core and facilitates the manufacture. SOLUTION: In the core 1 for casting used to form a hollow shape or an undercut shape in the product formed with a metallic mold, a synthetic resin- made packing material 5 softened with the heat at the time of casting is packed into the inner part of an outer shell metal 4 formed with a sheet metal. Since the synthetic resin-made packing material 5 has small heat conductivity, the packing material is hardened in the molten metal state, and it is unnecessary that the thickness of the outer shell metal 4 remained in the cast product is formed to the thickness in consideration of the casting pressure. Further, the packing material 5 is softened with the heat at the time of casting and can easily be removed.

10. 发明专利

JPH0871697A METHOD FOR REPAIRING RESIN CORE 失效
公开(公告)号：JPH0871697A
公开(公告)日：1996-03-19
申请号：JP21278694
申请日：1994-09-06
申请人： TOYOTA MOTOR CORP
发明人： OKADA YUJI , OKADA MASAMICHI , SHIRAKAWA HIROICHI , TOMITAKA SHUICHI
IPC分类号： B22D17/22 , B22C1/00 , B22C9/10
摘要： PURPOSE: To provide a method for repairing a resin core which is reusable by resetting the core to a prescribed shape without requiring a stage of melting injection molding for the plastically deformed resin core. CONSTITUTION: The resin core 30 plastically deformed by drawing is inserted into through-holes 6A, 6B of repair molds 4A, 4B in such a manner that its deformed part 34 corresponds to hole parts 8A, 8B and is heated near the hole parts 8A, 8B by heaters 10 to 10, by which the deformed part 34 is heated and softened. Both ends 30A, 30B of the resin core 30 are simultaneously pressurized inward by pressurizing means on both sides of the repair molds 4A, 4B and the part 34 softened by heating is made into projecting parts 36A, 36B. These parts are packed into the hole parts 8A, 8B and are reset to the resin core of the prescribed shape. Cooling water is thereafter passed into cooling water pipings 12 to 12, by which the projecting parts 36A, 36B are cooled to solidify. The resin core repaired in such a manner is taken out by dividing the repair molds 4A, 4B and is used for next casting.

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