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1. 发明专利

JPH03164217A REACTIVE INJECTION MOLDING METHOD 失效
公开(公告)号：JPH03164217A
公开(公告)日：1991-07-16
申请号：JP30616789
申请日：1989-11-24
申请人： EBARA CORP , NIPPON ZEON CO
发明人： NAKAMURA TOSHIO , SHINNO KENJI , SOEDA SHIGEYOSHI , YAMATO MOTOTOSHI , TOUHO KAZUO
IPC分类号： B29C45/00 , B29B7/76 , B29C39/24 , B29C45/18
摘要： PURPOSE:To obtain a large resin thick-walled molded product having no flaw by adjusting the temp. of a mixed resin raw solution by changing the mixing ratio of resin stock solutions different in temp. corresponding to a preset temp. pattern before injecting the mixed resin stock solution. CONSTITUTION:The opening degrees of the electromotive valves 8-1, 8-2 arranged between tanks 2-2, 2-3 and pumps 5-1, 5-2 are controlled by a control apparatus 1 and the mixing ratio of the stock solutions received in the tanks 2-2, 2-3 different in temp. is changed to adjust the temp. of the mixed resin stock solution. Therefore, the mixing ratio of the stock solutions different in temp. is changed corresponding to the preset temp. pattern corresponding to various conditions such as the shape, size or strength of a molded product to adjust the temp. of the mixed stock solution before injection. Since the temp. of the mixed stock solution issued from a mixing head 6 can be accurately changed without delay by changing the mixing ratio of the stock solutions different in temp., the injection temp. of the mixed stock solution can be accurately controlled.

2. 发明专利

JPH03164216A REACTIVE INJECTION MOLDING METHOD 失效
公开(公告)号：JPH03164216A
公开(公告)日：1991-07-16
申请号：JP30616689
申请日：1989-11-24
申请人： EBARA CORP , NIPPON ZEON CO
发明人： NAKAMURA TOSHIO , SHINNO KENJI , SOEDA SHIGEYOSHI , YAMATO MOTOTOSHI , TOUHO KAZUO
IPC分类号： B29C45/00
摘要： PURPOSE:To obtain a molded product having no flaw by injecting a stock solution while changing stock solution injection speed according to a speed change pattern preset corresponding to various conditions such as the shape, size or the like of the molded product. CONSTITUTION:A control apparatus 1 is equipped with an input/output apparatus 1-1, a central processing unit 1-2, an ROM 1-3 and a pattern memory part 1-4. A speed change pattern is stored in the pattern memory part 1-4 and the central processing unit 1-2 executes the program stored in the ROM 1-3. Output is sent to inverters 3, 3 according to the speed change pattern stored in the pattern memory part 1-4 through the input/output apparatus 1-1 and motors 4-1, 4-2 are rotated at the speed responding to the speed change pattern and a resin mixture is injected in the gap of a retaining mold from a mixing head 6. By this method, the injection speed of a mixed stock solution changes according to the speed change pattern.

3. 发明专利

JPH02174960A DROPPING TYPE FOUNTAIN DEVICE 失效
公开(公告)号：JPH02174960A
公开(公告)日：1990-07-06
申请号：JP33261988
申请日：1988-12-28
申请人： EBARA CORP
发明人： NAKAMURA TOSHIO , SHINNO KENJI
IPC分类号： B05B17/08
摘要： PURPOSE:To obtain the dropping type fountain device which is free from splashing of water drops from a water receiving plate by forming the part where water drops fall to a slope of the shape opened in the angle of inclination at 60 to 80 deg. with horizontal. CONSTITUTION:The water drops from a falling port of an upper tray 1 are reflected to the slope of the falling point part 4 of the water receiving plate 2 and are bounced to the inner side of the water receiving plate 2 as shown by dotted line 5, by which the splashing of the water drops falling from the upper tray 1 to the outside is prevented even if the dropping type fountain device is installed in a room. It is empirically ascertained that the length of the slope of the falling point part 4 of the water receiving plate 2 is sufficient at about 3cm with the dropping type fountain device of the above-mentioned structure having 44.5cm size from the falling port of the upper tray 1 up to the water receiving plate 2.

4. 发明专利

JPH01253416A RESIN INJECTION MOLDING APPARATUS 失效
公开(公告)号：JPH01253416A
公开(公告)日：1989-10-09
申请号：JP8047388
申请日：1988-04-01
申请人： EBARA CORP
发明人： NAKAMURA TOSHIO , SHINNO KENJI , FURUICHI TAKERU , SOEDA SHIGEYOSHI , SAKURAI KIYOSHI
IPC分类号： B29C45/00 , B29C45/14 , B29C45/22 , B29C45/26 , B29C70/06 , B29K101/10 , B29K105/06
摘要： PURPOSE:To eliminate the necessity of a molding machine having high injection pressure even in case of a molded piece having a relatively complicate shape and a large size, and to obviate a defect such as air voids, pinholes or the like in a molded product by providing a plurality of gates communicating with the air gap of a sealed molding die according to the injection amount of mixed resin and the shape of the air gap, and simultaneously injecting the resin from the machine into the air gap through a distributor. CONSTITUTION:A reinforcing material such as glass fiber is filled in advance in air gaps 5 formed between an outer mold made of upper and lower molds 2, 3 and a telescopic mold 4. When the valve of a distributor 11 is opened in this state and mixed resin in which thermosetting liquid resin is mixed with a curing agent is fed from an injection machine 13 to the distributor 11, the resin is supplied from nozzles 8,... through pipes 9,... and gates 6,... into the gaps 4. The portions of air in the gaps 5 are discharged through air vent holes 7,... to the exterior by supplying the resin into the gaps 5. The supply of the resin is stopped in a state that the resin is filled in the gaps 5, the molds 2, 3 are removed in a state that the resin is solidified by reaction curing, thereby completing an FRP molded piece.

5. 发明专利

JPH01221216A RESIN INJECTION MOLDING DEVICE 失效
公开(公告)号：JPH01221216A
公开(公告)日：1989-09-04
申请号：JP4914688
申请日：1988-03-01
申请人： EBARA CORP
发明人： NAKAMURA TOSHIO , SHINNO KENJI , FURUICHI TAKERU , SOEDA SHIGEYOSHI , SAKURAI KIYOSHI
IPC分类号： B29C33/10 , B29C45/00 , B29C45/14 , B29C45/34 , B29C70/06 , B29K101/10 , B29K105/06
摘要： PURPOSE:To prevent the generation of a defect such as a bubble in a molded product forming a comparatively complicated from, by a method wherein casting ports for mixed liquid resin are provided respectively to the lowermost part of an air gap and the independent insular bottom of a closed mold for molding. CONSTITUTION:For example, a product having an undercut partly is molded by a molding device. A closed mold for molding is constituted of a top and bottom forces 17, 18 and a core mold 19. Then casting ports 22 casting mixed liquid resin are formed on the lowermost parts 21-1, 21-3 of a gap having a form of a product and an independent insular bottom 21-2. Then air removal holes 23 of a fine diameter discharging air of the inside of an air gap 21 are formed on the uppermost parts 21-4, 21-6 of the air gap 21 and the independent insular upper part 21-5. Then the casting port 22 and air removal hole 23 are in a positional relation where they deviate relatively from each other. Then the mixed liquid resin obtained by mixing continuously and quantitatively with a curing agent through the casting port 22. In this instance, neither a turbulent flow in the cast mixed liquid resin nor the inclusion of air within the air gap 21 are generated.

6. 发明专利

JPH01221211A FIBER REINFORCED PLASTIC PRODUCT MOLDED BY RESIN INJECTION PROCESS 失效
公开(公告)号：JPH01221211A
公开(公告)日：1989-09-04
申请号：JP4914888
申请日：1988-03-01
申请人： EBARA CORP
发明人： NAKAMURA TOSHIO , SHINNO KENJI , FURUICHI TAKERU , SOEDA SHIGEYOSHI , SAKURAI KIYOSHI
IPC分类号： B29C39/22 , B29C39/10 , B29C45/00 , B29C45/14 , B29C70/10 , B29K105/06 , B29K105/08
摘要： PURPOSE:To contrive to improve the strength of a product and to simplify the charging operation of fiber by a method in which a plurality of mats composed of reinforcing fiber as the member of reinforcing fiber, are mutually lapped, and they are sewn like a quilting. CONSTITUTION:The member 1 of reinforcing fiber to be used for a product is made by lapping and sewing a plurality of mats composed of glass fiber, etc. The lapped body made of the mats is divided into many small divisions and is formed like a quilting at sewn parts 3. A plurality of reinforcing fiber- members 1 are preliminarily charged into the cavity 14 of the mold in the resin injection device for molding a product so that the sewn point 3 and a projected part are mutually lapped. Then, the liquid mixed resin in which a prescribed amount of curing agent is mixed with liquid thermosetting resin, is poured into the cavity 14. The cavity 14 is filled with said mixed liquid resin, and a fiber reinforced plastic product may be made by curing reaction. Consequently, the including rate of the reinforcing fibers in the molded product may be remarkably improved, and the fiber reinforced plastic product with very high strength is obtained.

7. 发明专利

JPH01206011A METHOD FOR INTEGRALLY FORMING PLASTIC PRODUCT AND PLASTIC PRODUCT THEREOF 失效
公开(公告)号：JPH01206011A
公开(公告)日：1989-08-18
申请号：JP3051788
申请日：1988-02-12
申请人： EBARA CORP
发明人： NAKAMURA TOSHIO , SHINNO KENJI , FURUICHI TAKERU , SOEDA SHIGEYOSHI , SAKURAI KIYOSHI
IPC分类号： B29C33/02 , B29C33/54 , B29C39/02 , B29C39/26 , B29C45/00 , B29C45/14 , B29K101/10 , B29K105/06
摘要： PURPOSE:To make it possible to easily and accurately form a part with a complicated shape by a method wherein liquid resin is poured in gaps made by a core and a mold and, after the solidification of the liquid resin, a plastic product is integrally formed by removing the core and the mold. CONSTITUTION:Cores 20 and 21, which form respectively the water passage part 14 and the central part 15 of a guide casing or a part of a pump, are prepared. In addition, molds 22, 23 and 24 are arranged outside the cores 20 and 21 so as to make gaps 27 and 28. Further, a plurality of pouring ports 26 for pouring liquid resin in the gaps 27 and 28 are made in the mold 24 and in the core 21. The cores 20 and 21 and the like, which can not release from the molds without being broken, are formed out of a molding material which is produced by blending molding sand for manufacturing mold with a proper amount of binder. After that, resin sent from a resin pouring pump is poured through a resin disperser from the pouring ports 26. After liquid resin fills the gaps 27 and 28 and solidifies, the molds 22, 23 and 24 and the cores 20 and 21 are removed and a plastic guide casing 10 is completed as an integral body.

8. 发明专利

JPH0227197A PLASTIC FORMING METHOD OF CENTRIFUGAL IMPELLER AND PLASTIC PUTTING PIECE USED IN THE SAME METHOD 失效
公开(公告)号：JPH0227197A
公开(公告)日：1990-01-29
申请号：JP17705188
申请日：1988-07-18
申请人： EBARA CORP
发明人： NAKAMURA TOSHIO , SHINNO KENJI , MIYAZAKI KOZO
IPC分类号： F04D29/22 , B29C45/14 , B29C45/36 , B29L31/08
摘要： PURPOSE:To prevent the curve of a core by setting a small plastic putting piece at deformable place of the core and inserting it into a metallic mold. CONSTITUTION:At the forming of the injection, the fused resin enters into a cavity 6a of the main plate side of an impeller 10 through a pin gate 8, and flows into a shroud side cavity 5a through a cavity 7 of a vane fitting part so as to be charged. The fused resin is charged earlier than the main plate side, though the core 3 tends to deform at the recessed part of the vane, the curve of the core 3 is restricted because the putting piece 20d is bonded to this place so that an upper projection 22d is placed in the deformation direction. The putting piece 20d is formed with the material to be weld so as to be finally integral, the putting piece 20d can be formed integrally with the impeller.

9. 发明专利

JPS5770077A Casting method in gas type inert caseous atmosphere 失效
标题翻译：气体类型异常大气中的铸造方法
公开(公告)号：JPS5770077A
公开(公告)日：1982-04-30
申请号：JP14683880
申请日：1980-10-22
申请人： Ebara Corp
发明人： NAKAMURA TOSHIO , SHINNO KENJI
IPC分类号： B22D21/02 , B22C9/02 , B22D23/00
摘要： PURPOSE: To substitute the air in a mold contained among sand particles and perform casting by enveloping the entire part of the mold with a bag of a gas impermeable film, and flowing an inert gas through the small holes in a sprue part and a riser part through the opening part of the bag.
CONSTITUTION: A bag 10 made of a film which prohibits permeation of gases is put on a mold 1 by leaving a clearance 13. The circumferences of a sprue part 5 and a riser part 6 are affixed to the film by means of a glue material 11. Further, a pouring bush 7 is affixed on the film above the part 5 and a riser mold 8 above the part 6 respectively by means of a a glue material 12 to provide sealing. Thence, small holes 15, 16 are provided in the film in the places of the sprue part and the riser part, respectively. The opening part 14 of the bag 10 is throttled and an inert gas is flowed into the bag 10 through a regulator 21 from an inert gas cylinder 20 at suitable pressure and flow rate and is flowed out through the holes 15, 16 to substitute the air in the mold. Thence, while the inert gas is kept flowed into the mold 1, casting work is carried out.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：用空气包裹在砂粒中的模具中进行铸造，通过用不透气薄膜袋包裹模具的整个部分进行铸造，并使惰性气体流过浇口部分和提升部分的小孔通过袋子的开口部分。构成：通过留下间隙13将由膜制成的防止气体渗透的袋子10放置在模具1上。浇道部分5和提升管部分6的周边通过胶料11固定在膜上此外，浇注衬套7分别通过胶水材料12固定在部件5上方的膜上方的上升模8上，以提供密封。于是，分别在浇道部分和提升部分的位置处在薄膜中设置小孔15,16。袋10的开口部分14被节流并且惰性气体通过调节器21从合适的压力和流速从惰性气瓶20流入袋10并通过孔15,16流出以代替空气在模具中。此时，惰性气体保持流入模具1中，进行铸造工作。

10. 发明专利

JPH03142055A FUSIBLE CORE MOLDING DEVICE FOR PLASTIC MOLDING 失效
公开(公告)号：JPH03142055A
公开(公告)日：1991-06-17
申请号：JP28009389
申请日：1989-10-26
申请人： EBARA CORP
发明人： SHINNO KENJI , NAKAMURA TOSHIO , SOEDA SHIGEYOSHI , MIYAZAKI KOZO
IPC分类号： B22D18/04 , B22D18/08 , B29C33/38
摘要： PURPOSE:To stably produce the fusible core having good quality by providing an adjusting pot which is communicated with a main pot by a pipe and valve and adjusts the level of the molten low melting alloy in the main pot. CONSTITUTION:After the molten low melting alloy is injected into a spacing 8, the air in the main pot 2 is discharged. The molten low melting alloy in the adjusting pot 11 is supplied through the valve 10 and the pipe 9 into the main pot 2 when the valve 10 is opened after the air pressure in the main pot 2 attains the atm. pressure. The level of the molten low melting alloy in the main pot 2 attains the specified level as well by opening the valve 10 if the level of the molten low melting alloy in the adjusting pot 11 is kept adjusted to the specified level at all times. The valve 10 is electrically closed and the fusible core is molded at the point of the time when the level in the pot 11 and the level in the pot 2 attains the same level.

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