Patents Assigned to Toshiba Kikai Kabushiki Kaisha
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Publication number: 20180022001Abstract: A movable platen according to the present invention includes: a mold clamping platen having a projecting portion in a mold closing direction-side surface; a mold mounting platen mounted to the projecting portion of the mold clamping paten; and a guide mechanism fixed to the mold clamping paten and supporting the mold mounting platen. Only the mold clamping paten is fixed to the guide mechanism, while the mold mounting platen is not fixed but placed on platen surface support portions.Type: ApplicationFiled: February 18, 2016Publication date: January 25, 2018Applicant: Toshiba Kikai Kabushiki KaishaInventors: HIDEAKI KITTA, NORIYUKI SASAKI, MASATO KINOSHITA
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Patent number: 9845828Abstract: A guide mechanism for a machine tool includes a movement member and a guide member in a form of first and second rails the movement member and the guide member relatively movable to each other. A hydrostatic pressure guide mechanism and a sliding guide mechanism are formed between the movement member and the first and second rails. The hydrostatic pressure guide mechanism includes a static pressure chamber, a seal portion sealing a periphery of the static pressure chamber, and a supply passage configured to supply a lubricating oil into the static pressure chamber.Type: GrantFiled: October 27, 2015Date of Patent: December 19, 2017Assignee: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: Atsushi Tada, Makoto Sagara, Teruaki Tsukiji, Takao Arai, Kazuhiro Takeuchi, Shun Tsunoda, Masato Inatsu, Yusuke Ishii, Yuya Tanaka
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Patent number: 9844901Abstract: A method for producing a molded product 70 involves the use of a mold 40 including a cavity 44 to which a molding material is supplied and an intercepting member 45 capable of moving back and forth within the cavity 44. The method comprises an interception step for moving the intercepting member 45 into the cavity 44 and an injection step for injecting the molding material into the cavity 44. During the injection step, the intercepting member 45 is used to regulate the flow of the molding member inside the cavity 44 at the initial stage of the injection. The intercepting member is thereafter pulled into the mold 40.Type: GrantFiled: May 1, 2015Date of Patent: December 19, 2017Assignee: TOSHIBA KIKAI KABUSHIKI KAISHAInventor: Nobuyuki Asanuma
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Publication number: 20170348888Abstract: A clamping device (14) comprises a pressure receiving platen (24), a stationary platen (20), a movable platen (22), a toggle mechanism (28), and a drive device (37). A first position detector (38a) detects the operation amount of the movable platen (22) based on the position of a crosshead (26); a pressure detector (35) detects the actual clamping force of a mold (19); and a second position detector (43) detects the actual position of the movable platen (22). A control portion (50) has first correction means correcting the operation amount of the movable platen (22) at the time of a minute mold opening operation based on the actual clamping force and on the set clamping force, and second correction means correcting the operation amount of the movable platen (22) at the time of the minute mold opening operation based on the operation amount of the movable platen (22) and on the position of the movable platen (22).Type: ApplicationFiled: October 1, 2015Publication date: December 7, 2017Applicant: Toshiba Kikai Kabushiki KaishaInventors: Takeshi NAGAMI, Hiroyuki ONUMA
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Publication number: 20170333984Abstract: There is provided an opening/closing apparatus which can eliminate the influence of a slight gap formed between a bush and a pin in a link connecting portion of a toggle link mechanism and, in addition, can enhance workability e.g mold replacement, An opening/closing apparatus according to an embodiment includes: a fixed platen 20 to which one mold 21 of a pair of molds is to be mounted; a movable platen 22 to which the other mold 23 is to be mounted; a pressure-receiving platen 24 connected to the fixed platen 20 via tie bars 36; an opening/closing mechanism for opening/closing the molds by moving the movable platen 22 back and forth, including a toggle link mechanism 28 connecting the pressure-receiving platen 24 and the movable platen 22; a first drive mechanism for driving the opening/closing mechanism; and a second drive mechanism 50 for applying a load to the movable platen 22 in a given direction in conjunction with the first drive mechanism.Type: ApplicationFiled: October 26, 2015Publication date: November 23, 2017Applicant: Toshiba Kikai Kabushiki KaishaInventors: Takaki Miyauchi, Jun Koike, Hideaki Kitta, Hiroyuki Onuma, Masato Kinoshita
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Publication number: 20170326630Abstract: A die casting machine includes a clamping device 7 which opens and closes and clamps a pair of die halves, an injection apparatus which performs injection to the pair of die halves by making a plunger move forward in a sleeve communicated with a space between the pair of die halves, and a control device which controls the clamping device and injection apparatus. The control device includes an injection control part and press-use clamping control part. The injection control part controls the injection apparatus so as to start the injection in a state where the pair of die halves face each other through a gap. The press-use clamping control part controls the clamping device so that the die contact and clamping are carried out after the start of injection. Further, the injection control part performs control for decelerating the plunger before the plunger stops.Type: ApplicationFiled: May 1, 2017Publication date: November 16, 2017Applicant: Toshiba Kikai Kabushiki KaishaInventors: KOUEI NAKATA, SATORU AIDA, TOSHIAKI TOYOSHIMA
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Publication number: 20170326764Abstract: An insert member (100) heated by a heating device (13) is conveyed, by means of a conveyance device (12), into a mold (51). Next, shaping is performed on the insert member (100) inside the mold (51), with the mold (51) being open by a minute distance. A molding material (91) is injected into the mold (51) and pressed while closing the mold (51) which has been open by the minute distance to thereby mold a molded article (80) including the insert member (100).Type: ApplicationFiled: August 24, 2015Publication date: November 16, 2017Applicant: Toshiba Kikai Kabushiki KaishaInventor: Nobuyuki ASANUMA
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Publication number: 20170312952Abstract: An opening/closing device (14) includes: a stationary platen (20), a movable platen (22) capable of moving toward or away from the stationary platen (20), an opening/closing mechanism (28) having a plurality of toggle links (30, 31, 32) at least one (32) of which is connected to the movable platen (22); a driving device (37) including a cross head (26) connected to at least one (30) of the toggle links and capable of moving the movable platen (22), and a control portion (50). The control portion (50) is configured to control the cross head (26) such that the movable platen (22) moves at fixed speed during fine die-opening operation.Type: ApplicationFiled: November 17, 2015Publication date: November 2, 2017Applicant: Toshiba Kikai Kabushiki KaishaInventors: Takeshi NAGAMI, Takeshi IIDA
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Patent number: 9802350Abstract: The present invention aims to stably maintain the posture of a crosshead by means of guide bars without an increase in the size of a link housing or tie bars. An opening/closing apparatus according to the present invention includes: a pressure-receiving plate (14); a fixed platen (12) to which a fixed mold (18) is to be mounted; a frame (11) on which the pressure-receiving plate (14) and the fixed platen (12) are installed; and a movable platen (16) which is movable on the frame (11) and to which a movable mold (19) is to be mounted.Type: GrantFiled: July 1, 2015Date of Patent: October 31, 2017Assignee: Toshiba Kikai Kabushiki KaishaInventor: Noriyuki Sasaki
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Patent number: 9806229Abstract: A deep ultraviolet LED with a design wavelength of ? is provided that includes a reflecting electrode layer, a metal layer, a p-type GaN contact layer, and a p-type AlGaN layer that are sequentially stacked from a side opposite to a substrate, the p-type AlGaN layer being transparent to light with the wavelength of ?; and a photonic crystal periodic structure that penetrates at least the p-type GaN contact layer and the p-type AlGaN layer. The photonic crystal periodic structure has a photonic band gap.Type: GrantFiled: October 24, 2014Date of Patent: October 31, 2017Assignees: MARUBUN CORPORATION, TOSHIBA KIKAI KABUSHIKI KAISHA, RIKEN, ULVAC, INC., TOKYO OHKA KOGYO CO., LTD.Inventors: Yukio Kashima, Eriko Matsuura, Mitsunori Kokubo, Takaharu Tashiro, Takafumi Ookawa, Hideki Hirayama, Ryuichiro Kamimura, Yamato Osada, Satoshi Shimatani
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Patent number: 9803686Abstract: A hydrostatic pressure guide mechanism includes: a guide member having a smooth guide surface; a movement member having a slide surface facing the guide surface and an annular placement groove formed on the slide surface; an annular seal member (hermetically closing member) that is disposed in the placement groove and capable of hermetically contacting with the guide surface; an oil supply structure configured to supply an oil into a static pressure pocket on the slide surface surrounded by the seal member; and an oil recovery structure configured to recover the oil from the static pressure pocket, in which the oil recovery structure has a recovery hole that is formed in the static pressure pocket and is opened on the slide surface.Type: GrantFiled: October 27, 2015Date of Patent: October 31, 2017Assignees: TOSHIBA KIKAI KABUSHIKI KAISHA, YUGEN KAISHA NEWLY LABORATORYInventors: Atsushi Tada, Makoto Sagara, Teruaki Tsukiji, Takao Arai
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Publication number: 20170305084Abstract: It is an object of the present invention to provide a light diffusing lens production apparatus which makes it possible to efficiently produce a high-quality light diffusing lens having enhanced optical properties.Type: ApplicationFiled: September 9, 2015Publication date: October 26, 2017Applicant: Toshiba Kikai Kabushiki KaishaInventor: Ryuichi KATSUMATA
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Publication number: 20170282243Abstract: A flow rate control valve configuring a meter-out circuit of an injection cylinder is an overlap type where a first port starts to be opened by a spool passing through an overlapping range. The control device holds a characteristic table linking a command value of a control command to the flow rate control valve and a velocity of a plunger including also the movement of the plunger which occurs due to a gap flow even if the spool is located in the overlapping range. Further, the control device specifies the command value corresponding to the target velocity set by operation of the input device based on the characteristic table, performs open control based on this command value, then performs the feedback control for realizing the target velocity.Type: ApplicationFiled: February 2, 2017Publication date: October 5, 2017Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: HIROSHI YOKOYAMA, SHUNSUKE TAKEKAWA
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Publication number: 20170282418Abstract: According to one embodiment, a rotating state of a second motor is transmitted to a second roll as it is. A posture of a rotation central axis of the second motor is maintained constant. A changed state of the second roll is not transmitted to the second motor. Thereby, the second roll is rotated with timing identical to the rotating state of the second motor.Type: ApplicationFiled: March 30, 2017Publication date: October 5, 2017Applicant: Toshiba Kikai Kabushiki KaishaInventors: Koji MIZUNUMA, Ryota OKE, Tomonori YAMAGUCHI, Akihiro IWATA
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Publication number: 20170274569Abstract: The present invention provides a movable platen support apparatus which, with a linear guide having a minimum necessary load rating, can secure a sufficient traveling life of the linear guide and, in addition, can secure the rigidity of the linear guide which is necessary and sufficient taking into consideration a moment that acts on a movable platen. A movable platen support apparatus 40 according to the present invention includes a guide mechanism which movably engages a rail 41 extending on a frame 11 in the direction of movement of a movable platen 16, to which a movable mold 19 is to be mounted, and which movably supports the movable platen 16. The guide mechanism includes a linear guide 42 composed of blocks 42a to 42d arranged in a line, in which at least one of the blocks 42a to 42d, e.g. the blocks 42b, 42c, has a load rating which differs from the load rating(s) of the other block(s), e.g. the blocks 42a, 42d.Type: ApplicationFiled: August 25, 2015Publication date: September 28, 2017Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: HIDEAKI KITTA, NORIYUKI SASAKI, MASATO KINOSHITA
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Publication number: 20170266755Abstract: A tool holder of a machine tool, in which the machine tool includes a spindle head and a spindle supported by the spindle head, includes: a shank portion attached to the spindle; a rotary portion integrally provided to the shank portion and to which a welding tool (processing tool) used for friction stir welding is attachable; a bearing mechanism (bearing) supporting the rotary portion so that the rotary portion is rotatable; and a bearing holder holding the bearing mechanism, in which the bearing holder is disposed facing the spindle head and is capable of transmitting a load applied to the bearing mechanism to the spindle head.Type: ApplicationFiled: March 10, 2017Publication date: September 21, 2017Applicant: Toshiba Kikai Kabushiki KaishaInventors: Kouichi KATOH, Masami AIHARA, Atsushi TADA, Makoto SAWAZAKI
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Publication number: 20170266756Abstract: A friction stir welding tool attachable to a spindle of a machine tool includes: a shank connected to the spindle; a chuck connected to the shank through a heat insulating portion; a welding tool connected to the chuck and usable for friction stir welding; and a cooling jacket provided on a circumferential surface of the chuck. The cooling jacket is provided with a refrigerant path for delivering a refrigerant.Type: ApplicationFiled: March 10, 2017Publication date: September 21, 2017Applicant: Toshiba Kikai Kabushiki KaishaInventors: Kouichi KATOH, Masami AIHARA, Atsushi TADA, Makoto SAWAZAKI
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Publication number: 20170259328Abstract: A molten metal feed pipe for feeding a molten metal of an nonferrous alloy includes an outer tube made of a ferrous material, an inner tube made of a molten metal resistant material, and an intermediate member made of a compact of a fibrous non-organic material, which is disposed between the outer tube and the inner tube. The intermediate member, positioned in the central region of the molten metal feed pipe with respect to the longitudinal axial direction of the molten metal feed pipe, is disposed between the outer tube and the inner tube with the intermediate member being compressed in a radial direction of the molten metal feed pipe.Type: ApplicationFiled: March 7, 2017Publication date: September 14, 2017Applicant: Toshiba Kikai Kabushiki KaishaInventors: Hisanori FUWA, Shuhei HONMA, Hiroki AMEZAWA
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Patent number: 9733635Abstract: An electric machine according to the embodiment includes: a motor; a current controller supplying a current to the motor; a detector detecting a position, a speed, or an acceleration of a shaft of the motor; a controller calculating a torque parameter indicating a torque of the motor based on a current instruction that specifies a supply current to the motor and calculating a speed parameter indicating a rotational speed of the shaft of the motor based on a detection result from the detector; and a display part displaying a graph showing a relation between the torque parameter and the speed parameter.Type: GrantFiled: November 12, 2015Date of Patent: August 15, 2017Assignee: TOSHIBA KIKAI KABUSHIKI KAISHAInventor: Takamichi Ito
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Publication number: 20170225287Abstract: The polishing apparatus includes: a holding section that holds a material to be polished; the polishing body that polishes the material to be polished held by the holding section; the head that supports the polishing body via the elastic mechanism; a driving mechanism that causes the head to be moved in a Z coordinate direction; and a control unit that is connected to the driving mechanism and controls the driving mechanism. A load measurement device to measure a load applied to the polishing body is attached to the head, and the load measurement device is connected to the polishing body via the elastic mechanism.Type: ApplicationFiled: February 2, 2017Publication date: August 10, 2017Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: YU MUROFUSHI, HIROAKI OMAGARI, MASATERU TOMIYASU