专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP3005660B2 失效
公开(公告)号：JP3005660B2
公开(公告)日：2000-01-31
申请号：JP26945090
申请日：1990-10-09
IPC分类号： C04B35/00 , B28B1/28 , B28B21/30 , C01G1/00 , C04B35/45 , C04B35/622

2. 发明专利

JPH1148224A APPARATUS FOR MOLDING ELLIPTICAL CONTAINER AND ELLIPTICAL CONTAINER MOLDED BY THE APPARATUS 失效
公开(公告)号：JPH1148224A
公开(公告)日：1999-02-23
申请号：JP22188197
申请日：1997-08-04
申请人： MATSUO SEITOSHO KK , MIZUTANI IWAO
发明人： MIZUTANI IWAO
IPC分类号： B28B1/28
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for molding which can mold an elliptical container in an extremely short time. SOLUTION: This apparatus for molding an elliptical container is provided with a motor 20, a main shaft 22 being rotatably driven by driving of this motor 20, a guide rail 25 fixed on the main shaft 22, a slide member 26 being fitted on the guide rail 25 and freely slided in the length direction, a ring member 27 through which the apex end side of the main body 22 is inserted and whose center is eccentrically fixed to the main shaft 22, a sliding member 32 having the first and the second slidably contacting parts 32b and 32c being fixed on the slide member 26 and being slidably brought into contact with the outer or inner peripheral face of the ring member 27, a supporting shaft 33 fixed on the slide member 32, a mold 9 being rotated by rotating the supporting shaft 33 and on the top face of which an elliptical recessed part 9a is formed and in the recessed part 9a of which a clay being a raw material of the container is fed, and a molding plate 6 fixed in this mold 9 in facing the inner peripheral face of this mold 9 at a specified interval.

3. 发明专利

JPH08142021A MANUFACTURE OF CERAMIC COMPACT 失效
公开(公告)号：JPH08142021A
公开(公告)日：1996-06-04
申请号：JP30700994
申请日：1994-11-15
申请人： HIROSHIMA ALUMINIUM KOGYO
发明人： KUROKI HIDENORI , TAJIMA SHUNZO
IPC分类号： B28B1/26 , B28B1/28
摘要： PURPOSE: To prevent a thin film from breaking and improve fractional defect at the centrifugal molding of a ceramic compact having a complicated undercut shape out of slurry without pollution. CONSTITUTION: An assembly consists of a mold 12 having undercuts, a thin film 9, which is expandably attached to the pouring port and made of a green rubber dipping solution, a tube 15, which fixes the peripheral edge of the thin film and in which a slurry 18 is housed and a rigid structure, in which the above-mentioned mold, the thin film and the tube are housed. By filling the slurry 18 in a cavity 16 formed by the thin film and the tube 15 and then expanding the thin film by centrifugal force, the slurry is charged in the cavity 13 of the mold so as to precipitate and solidify into a compact. During the process for manufacturing the compact by melting the mold after being taken out of the rigid structure together with the mold, a thin film nearly similar to the mold is used.

4. 发明专利

JPH05253921A 失效
公开(公告)号：JPH05253921A
公开(公告)日：1993-10-05
申请号：JP8767392
申请日：1992-03-10
IPC分类号： B28B1/28 , B28B21/08 , B28B21/30
摘要： PURPOSE:To reduce a cast molding time and mold a thick-wall piece in cast molding. CONSTITUTION:As a fine ceramic material, a material which is not more than 1mum in average particle diameter and hardly cast molded into a thick-wall molded piece is dispersed in water or an organic solvent. As a gypsum mold, a gypsum mold 1 which is machined to be cylindrical inside is used. After a predetermined amount of slurry is charged in the gypsum mold 1, the gypsum mold 1 is rotated so that a centrifugal force is applied vertically to the tangential direction of a cylinder periphery of a required molded piece. Therefore, by applying a centrifugal force vertically to the tangential line of a cylinder periphery in the cast molding of a hollow cylindrical shape, a thick-wall molded piece can be obtained in a short time. In addition, this method is not limited to a simple hollow cylindrical shape, and is applicable to, for example, a hollow cylinder with flange or step.

5. 发明专利

JPH04300234A APPARATUS FOR CENTRIFUGAL SLURRY CASTING OF FORMED CERAMIC ARTICLE 失效
公开(公告)号：JPH04300234A
公开(公告)日：1992-10-23
申请号：JP13380691
申请日：1991-03-28
申请人： KUBOTA KK
发明人： SUGAI ATSUSHI , MOTOKI RYUTARO , SHINOZAKI TAKESHI
IPC分类号： B28B1/28 , B28B21/30 , C04B33/00
摘要： PURPOSE:To provide an improved apparatus for forming a formed ceramic article having increased density while preventing the contamination of slurry or intrusion of air bubbles in the centrifugal slurry cast-forming of a ceramic article. CONSTITUTION:A metallic mold is used as the forming mold 13. Both openings of the metallic mold 13 are closed with detachable covers 14a, a ceramic slurry is poured into the metallic mold 13 and the space in the mold is evacuated with a vacuum pump 22 to deaerate the slurry. The metallic mold is rotated in a state kept in vacuum. The ceramic particles of the slurry are forcedly separated from water by the action of centrifugal force taking advantage of the specific gravity difference to obtain the objective formed ceramic article 15.

6. 发明专利

JPH04294104A COMPOSITE CERAMIC AND METHOD FOR PREPARATION THEREOF 失效
公开(公告)号：JPH04294104A
公开(公告)日：1992-10-19
申请号：JP8478291
申请日：1991-03-25
申请人： SUZUKI MOTOR CO
发明人： KOBAYASHI MASAHIKO
IPC分类号： B28B1/28 , B28B21/30 , F16L9/10
摘要： PURPOSE:To obtain a cylindrical composite ceramic with strong thermal shock resistance by dispersing ceramic powders each with different specific gravity and thermal expansion coefficient in a solvent, performing sedimentation thereof by means of a centrifugal force and sintering it thereafter. CONSTITUTION:A slurry is prepd. by mixing a mixed powder of an alumina powder with a specific gravity of 3.90, a TZP powder with a specific gravity of 6.0, distilled water and a dispersing agent for ceramic oxide. A driving motor 9 is rotated and a centrifugal force is applied to the slurry in casting mold 2 by means of rotation of a rotating shaft 4 in such a way that the slurry in the casting mold 2 is not biased to a specified side face by rotation of the rotating shaft 6. After the rotation is continuously driven until the thickness of the powder particles reaches 9mm on the cylindrical wall in the casting mold 2, excess slurry is discharged and a cross section wherein the thermal expansion coefficient is continuously changed from the inside to the outside is formed and then, it is sintered. Even when a cylindrical part with thick thickness is molded, a cylindrical composite ceramic without any breakage caused by thermal shock can be obtd. and it does not need selection of the material to result in cost reduction.

7. 发明专利

JPH04292450A CASTING OF SLIP OF CERAMICS INTO MOLDED ARTICLE BY CENTRIFUGAL FORCE 失效
公开(公告)号：JPH04292450A
公开(公告)日：1992-10-16
申请号：JP13081291
申请日：1991-03-20
申请人： KUBOTA KK
发明人： SUGAI ATSUSHI , MOTOKI RYUTARO , SHINOZAKI TAKESHI
IPC分类号： B28B1/28 , B28B21/30 , C04B33/28
摘要： PURPOSE:To obtain a highly densified molded article having a small amount of impurities admixed by using a metallic mold as a molding mold, rotating the metallic mold at high speed around a horizontal axial center as the center of rotation. CONSTITUTION:A cover 14a having a central hole 14b is bolted to a flange 13a of a cylindrical molding metallic mold 13 to close openings at both ends. The metallic mold 13 is supported on a drive roller 10 of a turning roll 12 and a free roller 11 and rotated at high speed by the drive roller 10. The inner faces of the metallic mold 13 and the cover 14a are provided with a coating layer (e.g. Teflon(R) having 2-5mm thickness) 16 to facilitate removal of molded article (thick layer) of ceramics from the mold. First, slip is injected from the central hole 14b and then the metallic mold 13 is rotated at high speed. The slip is separated by specific gravity by centrifugal force thereof and the ceramics particles form the thick layer 15. When the layer reaches given thickness, revolution is stopped, a dispersion medium 17 is drained and the cover 14a is removed to take out a molded article 15.

8. 发明专利

JPH04156303A DEMOLDING METHOD OF UPPER MEMBER OF STOOL 失效
公开(公告)号：JPH04156303A
公开(公告)日：1992-05-28
申请号：JP28132690
申请日：1990-10-19
申请人： INAX CORP
发明人： SHINBA KOICHI , ITO KOYO
IPC分类号： B28B1/28 , B28B7/10 , B28B13/04
摘要： PURPOSE:To perform demolding by a single worker by a method wherein respective molds are installed on respective pivoting bases, each of which can pivot from dorsal decubitus to ventral decubitus, and after an upper mold is separated from a lower mold with a transferring device and then the lower mold is covered with a tray, and, after that, by levelling the pivoting base onto a carrying stand, a formed material and the tray are transferred to the carrying stand. CONSTITUTION:A large number of pivoting bases 14 are arranged in line on a trestle 12. A mold 16 consisting of a lower mold 18 and an upper mold 20 is installed on each pivoting base. A transferring device is equipped with a clamping device 60, which is provided shiftably along a guide rail providing so as to stretch over the mold 16 along beams 26 and 28. Said device 60 is equipped with spreaders 64 and 64 having protrusible pins 68 and 70 on its side opposite to the mold 16. The upper mold 20 is clamped by inserting said pins in the apertures of hook fittings 22, which are attached onto the upper mold. By pivoting a lever 84 under the above-mentioned state, the upper mold 20 is lifted. Next, the transferring device is slid. After that, the lower mold 18 is covered with a tray. By pivoting a pivoting base 14, the lower mold 18 is levelled on a carrying stand 36. Finally, the pivoting base 14 is restored to its back position.

9. 发明专利

JPH0344406A APPARATUS FOR CASTING POWDER 失效
公开(公告)号：JPH0344406A
公开(公告)日：1991-02-26
申请号：JP17573489
申请日：1989-07-10
申请人： NIPPON KOKAN KK
发明人： NISHIO HIROAKI , SATOU MICHITAKA , KATO AKIRA
IPC分类号： B28B1/28 , B22F3/22
摘要： PURPOSE:To efficiently execute casting work for powder slurry in a short time by constituting the casting apparatus for slurry of metal powder or ceramic powder with a mold clamping device liftable at upper part of the mold, a slurry pouring nozzle at lower part of the mold and a mold supporting table horizontally shiftable. CONSTITUTION:The metal powder or the ceramic powder is made to the slurry- state and charged into a tank 9 and circulated with a piping 12 from a discharging hole 15 through a returning hole 6 while being stirred with a stirring machine 2. On the way of the piping 12, a slurry discharging valve 1 is arranged, and by driving a hydraulic cylinder 19, the slurry is cast under pressurizing into the mold 27b from the nozzle 22. Plural molds 27a, 27b,..., are laid on the mold supporting tables 25a, 25b and the molds are shifted to a casting position B from a preparing position A with revolution of a motor 23 in order, and the mold 27b is clamped with the mold clamping device 18 and the slurry is cast into the mold from outlet 21 for slurry of the nozzle 22. At the preparing position A, the next mold 27a is prepared, and after completing the casting into the mold 27b, immediately the mold 27a is shifted to the B position, the casting of slurry is executed with good working efficiency in a short time.

10. 发明专利

JPH01179748A SLURRY CASTING METHOD FOR CERAMIC PRODUCT 失效
公开(公告)号：JPH01179748A
公开(公告)日：1989-07-17
申请号：JP282688
申请日：1988-01-08
申请人： KUBOTA LTD
发明人： NISHIMURA YUKIO , HIRAISHI HISASHI , SUGAI ATSUSHI
IPC分类号： C04B35/622 , B28B1/28
摘要： PURPOSE:To improve the denseness, homogeneity, dimensional precision, and strength of a cast product by pouring a specified slurry into a water-absorptive mold, and rotating the mold to adhere the slurry on the inner surface of the mold by centrifugal force. CONSTITUTION:The ceramic particles contg. a bivalent metal salt such as CaCO3 having 0.3-2mum particle diameter are suspended in water, and 0.1-0.5wt.% of one or more kinds of deflocculants selected from water glass, Na2CO3, NaH2PO4, and Na2SO4 are added to obtain a suspension. Aq. ammonium is added, as required, by 0.01-0.3wt.% to the suspension so that the total water content is adjusted to 15-33wt.% to obtain a ceramic slurry (a). The (a) component is poured into the water-absorptive mold 1 (gypsum mold) through a hopper 4, and the mold 1 and a shell 2 are rotated by a rotary roll 5 with the centrifugal force at 30-300G to form a ceramic cast product A(b) on the inner surface of the mold 1. The (b) ceramic product is extracted from the mold 1, dried, and sintered.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式