Patents by Inventor Harumichi Tokuyama
Harumichi Tokuyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140175691Abstract: According to one embodiment, a mold protection apparatus for use in an opening/closing apparatus, the movable platen being formed to be movable in a direction towards or away from a fixed platen having a fixed mold and being fixedly provided with a movable mold, the mold protection apparatus comprises a deriving means, a calculating means, and a comparing means. The deriving means configured to obtain an actual operation drive force output from the motor. The calculating means configured to calculate a theoretical operation drive force of the motor. The comparing means configured to compare a difference between the actual operation drive force derived by the deriving means and the theoretical operation drive force calculated by the calculating means with a threshold value.Type: ApplicationFiled: December 23, 2013Publication date: June 26, 2014Applicant: Toshiba Kikai Kabushiki KaishaInventors: Haruyuki MATSUBAYASHI, Harumichi TOKUYAMA, Takeshi Iida
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Patent number: 8715548Abstract: A mold fastening device has a fixed die plate, a rear plate, a movable die plate that can move back and forth, a toggle mechanism, and a drive motor that drives a cross-head. The position where the cross-head should be stopped is associated with the rate at which to accelerate the cross-head from that position or the rate at which to decelerate the cross-head to that position. The cross-head is operated at an acceleration that corresponds to that position. The drive motor is thereby driven at a constant output torque, regardless of the position of the movable die plate. Further, the time for opening and closing metal molds can be shortened.Type: GrantFiled: November 5, 2009Date of Patent: May 6, 2014Assignee: Toshiba Kikai Kabushiki KaishaInventors: Hideaki Tobita, Harumichi Tokuyama
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Patent number: 8668050Abstract: A lubrication-condition detector detects a lubricant shortage of a target portion that repeats a predetermined operation at a predetermined cycle. The lubrication-condition detector includes: a physical-quantity measuring unit for continuously measuring a physical quantity related to the target portion; and a computer for determining a presence of a lubricant shortage based on the physical quantity. The computer includes: a cycle extractor for extracting a cycle datum per an operational cycle from continuous data including the physical quantity and its measuring time; a representative-value calculator for calculating a representative value for each of plural cycle data; and determining unit for determining a presence of a lubricant shortage based on the plural representative values.Type: GrantFiled: June 7, 2013Date of Patent: March 11, 2014Assignee: Toshiba Kikai Kabushiki KaishaInventors: Harumichi Tokuyama, Masahiko Mori, Makoto Takami, Haruhiko Kikuchi, Akira Yoshinaga, Noriyuki Sasaki, Shinya Itani
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Publication number: 20130269422Abstract: A lubrication-condition detector detects a lubricant shortage of a target portion that repeats a predetermined operation at a predetermined cycle. The lubrication-condition detector includes: a physical-quantity measuring unit for continuously measuring a physical quantity related to the target portion; and a computer for determining a presence of a lubricant shortage based on the physical quantity. The computer includes: a cycle extractor for extracting a cycle datum per an operational cycle from continuous data including the physical quantity and its measuring time; a representative-value calculator for calculating a representative value for each of plural cycle data; and determining unit for determining a presence of a lubricant shortage based on the plural representative values.Type: ApplicationFiled: June 7, 2013Publication date: October 17, 2013Inventors: Harumichi TOKUYAMA, Masahiko MORI, Makoto Takami, Haruhiko KIKUCHI, Akira YOSHINAGA, Noriyuki SASAKI, Shinya ITANI
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Patent number: 8512608Abstract: An injection molding device comprises a mold-clamping device that operates in both of a mold-closing state in which a mold is closed under predetermined pressure and a micro mold-open state in which the mold is held in a state in which the mold is open from the mold-closing state by a predetermined amount, an injection device that molds a molded product by injecting a molding material into the mold set to the mold-closing state or the micro mold-open state and a controller that changes a stop position of the mold in the micro mold-open state in accordance with a change of a mold-closing position when the mold-closing position of the mold in the mold-closing state is changed.Type: GrantFiled: May 16, 2011Date of Patent: August 20, 2013Assignee: Toshiba Kikai Kabushiki KaishaInventors: Jun Koike, Harumichi Tokuyama, Harunobu Inami, Yasumasa Sugiyama, Mitsuru Koga
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Patent number: 8486315Abstract: An injection molding device comprises a mold-clamping device that operates in both of a mold-closing state in which a mold is closed under predetermined pressure and a micro mold-open state in which the mold is held in a state in which the mold is open from the mold-closing state by a predetermined amount, an injection device that molds a molded product by injecting a molding material into the mold set to the mold-closing state or the micro mold-open state and a controller that changes a stop position of the mold in the micro mold-open state in accordance with a change of a mold-closing position when the mold-closing position of the mold in the mold-closing state is changed.Type: GrantFiled: May 16, 2011Date of Patent: July 16, 2013Assignee: Toshiba Kikai Kabushiki KaishaInventors: Jun Koike, Harumichi Tokuyama, Harunobu Inami, Yasumasa Sugiyama, Mitsuru Koga
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Patent number: 8479886Abstract: A lubrication-condition detector detects a lubricant shortage of a target portion that repeats a predetermined operation at a predetermined cycle. The lubrication-condition detector includes: a physical-quantity measuring unit for continuously measuring a physical quantity related to the target portion; and a computer for determining a presence of a lubricant shortage based on the physical quantity. The computer includes: a cycle extractor for extracting a cycle datum per an operational cycle from continuous data including the physical quantity and its measuring time; a representative-value calculator for calculating a representative value for each of plural cycle data; and determining unit for determining a presence of a lubricant shortage based on the plural representative values.Type: GrantFiled: April 10, 2008Date of Patent: July 9, 2013Assignee: Toshiba Kikai Kabushiki KaishaInventors: Harumichi Tokuyama, Masahiko Mori, Makoto Takami, Haruhiko Kikuchi, Akira Yoshinaga, Noriyuki Sasaki, Shinya Itani
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Publication number: 20120306110Abstract: A locking apparatus includes a stationary platen on which a stationary die is mounted, a movable platen on which a movable die is mounted, a locking drive mechanism that advances or retreats the movable platen, an ejecting member held in the movable platen to remove a molded product from the movable die, a protruding drive mechanism that pushes out the ejecting member from the movable die, and an error detection unit that detects extraneous material based on a state change of the ejecting member or the protruding drive mechanism during a closing operation.Type: ApplicationFiled: May 29, 2012Publication date: December 6, 2012Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventor: Harumichi Tokuyama
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Publication number: 20120306112Abstract: A molding machine according to an embodiment includes a stationary platen equipped with a stationary die, a movable platen equipped with a movable die, a locking drive mechanism to move the movable platen forward or backward and to lock the movable die against the stationary die, a detecting portion to detect information about a locking state, an injection device, and a control unit to monitor the information obtained by the detecting portion in an injecting process and to control an injection pressure of the injection device based on a value obtained from the information.Type: ApplicationFiled: May 30, 2012Publication date: December 6, 2012Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: Harumichi Tokuyama, Haruyuki Matsubayashi, Takeshi Iida
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Publication number: 20110285046Abstract: An injection molding device comprises a mold-clamping device that operates in both of a mold-closing state in which a mold is closed under predetermined pressure and a micro mold-open state in which the mold is held in a state in which the mold is open from the mold-closing state by a predetermined amount, an injection device that molds a molded product by injecting a molding material into the mold set to the mold-closing state or the micro mold-open state and a controller that changes a stop position of the mold in the micro mold-open state in accordance with a change of a mold-closing position when the mold-closing position of the mold in the mold-closing state is changed.Type: ApplicationFiled: May 16, 2011Publication date: November 24, 2011Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: Jun KOIKE, Harumichi Tokuyama, Harunobu Inami, Yasumasa Sugiyama, Mitsuru Koga
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Publication number: 20100112113Abstract: A mold fastening device has a fixed die plate, a rear plate, a movable die plate that can move back and forth, a toggle mechanism, and a drive motor that drives a cross-head. The position where the cross-head should be stopped is associated with the rate at which to accelerate the cross-head from that position or the rate at which to decelerate the cross-head to that position. The cross-head is operated at an acceleration that corresponds to that position. The drive motor is thereby driven at a constant output torque, regardless of the position of the movable die plate. Further, the time for opening and closing metal molds can be shortened.Type: ApplicationFiled: November 5, 2009Publication date: May 6, 2010Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: Hideaki TOBITA, Harumichi Tokuyama
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Publication number: 20080271949Abstract: A lubrication-condition detector detects a lubricant shortage of a target portion that repeats a predetermined operation at a predetermined cycle. The lubrication-condition detector includes: a physical-quantity measuring unit for continuously measuring a physical quantity related to the target portion; and a computer for determining a presence of a lubricant shortage based on the physical quantity. The computer includes: a cycle extractor for extracting a cycle datum per an operational cycle from continuous data including the physical quantity and its measuring time; a representative-value calculator for calculating a representative value for each of plural cycle data; and determining unit for determining a presence of a lubricant shortage based on the plural representative values.Type: ApplicationFiled: April 10, 2008Publication date: November 6, 2008Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: HARUMICHI TOKUYAMA, Masahiko Mori, Makoto Takami, Haruhiko Kikuchi, Akira Yoshinaga, Noriyuki Sasaki, Shinya Itani
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Patent number: 7369964Abstract: White noise is applied to a servocontrol system of a servomotor in order to measure a frequency characteristic of a mechanical component in an electric injection molding machine, and a signal from an encoder is applied to a fast Fourier converter. Data from the fast Fourier converter is applied to a memory unit, and the content of the memory unit is displayed on a display unit in the form of a board diagram. Repair announcement is issued when a deviation of the resonant frequency of each mechanical component with respect to data at an initial setting time exceeds a predetermined value.Type: GrantFiled: September 26, 2006Date of Patent: May 6, 2008Assignee: Toshiba Kikai Kabushiki KaishaInventors: Makoto Nishizawa, Harumichi Tokuyama, Tomonori Morita
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Publication number: 20070093976Abstract: White noise is applied to a servocontrol system of a servomotor in order to measure a frequency characteristic of a mechanical component in an electric injection molding machine, and a signal from an encoder is applied to a fast Fourier converter. Data from the fast Fourier converter is applied to a memory unit, and the content of the memory unit is displayed on a display unit in the form of a board diagram. Repair announcement is issued when a deviation of the resonant frequency of each mechanical component with respect to data at an initial setting time exceeds a predetermined value.Type: ApplicationFiled: September 26, 2006Publication date: April 26, 2007Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: MAKOTO NISHIZAWA, Harumichi Tokuyama, Tomonori Morita
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Patent number: 7165966Abstract: There is provided an injection molding machine provided with an injection mechanism that enables a high-speed injection.Type: GrantFiled: May 30, 2003Date of Patent: January 23, 2007Assignee: Toshiba Kikai Kabushiki KaishaInventors: Hiroyuki Onuma, Katsuhito Ogura, Katsuyoshi Kido, Harumichi Tokuyama
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Patent number: 6962491Abstract: An injection molding machine using a linear motor, has a linear motor serving as a linear drive mechanism; a temperature sensor configured to detect a temperature of a coil of said linear motor or an ambient temperature thereof; an input unit configured to input a signal of the temperature detected by said temperature sensor; a data converting unit configured to convert the detected temperature signal into temperature data; a storage unit, including a temperature data setting unit configured to preset an allowable temperature, etc.Type: GrantFiled: March 12, 2003Date of Patent: November 8, 2005Assignee: Toshiba Kikai Kabushiki KaishaInventors: Makoto Nishizawa, Katsuhito Ogura, Katsuyoshi Kido, Harumichi Tokuyama, Hiroyuki Onuma
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Patent number: 6821103Abstract: A screw is incorporated in a heating barrel, and the tail end of the screw is rotatably supported by the front surface of an intermediate plate. Behind the intermediate plate, two linear motor units are connected in parallel and arranged around the shaft of the screw to form axial symmetry. The output shafts of the linear motor units are connected to the tail end of a driving shaft through a common connecting arm, and the leading end of the driving shaft is fixed to the rear surface of the intermediate plate. Each of the liner motor units is constituted by a plurality of voice coil linear motors connected in parallel. Each of the linear motor units can be independently controlled. Voice-coil linear motors to be used are selected according to the type of product to be manufactured.Type: GrantFiled: October 7, 2002Date of Patent: November 23, 2004Assignee: Toshiba Machines Co., Ltd.Inventors: Harumichi Tokuyama, Makoto Nishizawa, Jun Koike, Akihide Okube, Fumiyuki Katoh, Hiroyuki Onuma, Katsuhito Ogura, Katsuyoshi Kido
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Publication number: 20030224085Abstract: There is provided an injection molding machine provided with an injection mechanism that enables a high-speed injection.Type: ApplicationFiled: May 30, 2003Publication date: December 4, 2003Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: Hiroyuki Onuma, Katsuhito Ogura, Katsuyoshi Kido, Harumichi Tokuyama
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Publication number: 20030209824Abstract: A screw is installed in a heating barrel. The rear end of the screw is supported by an intermediate plate via a bearing. The servomotor for charging is connected to a near the rear end of the screw. To the back surface of the intermediate plate, a direct current linear motor for injection is connected via a load cell. The load cell detects the axial direction load applied to the rear end of the screw by the pressure of the molten resin in the heating barrel during charging, and also detects the axial direction load applied to the rear end of the screw for moving the screw forward during injection. The current to be supplied to the DC linear motor is controlled in a feedback manner based on the detected axial direction load, thereby bringing the pressure of the molten resin in the heating barrel closer to a predetermined pattern.Type: ApplicationFiled: May 8, 2003Publication date: November 13, 2003Applicant: TOSHIBA MACHINE CO., LTD.Inventors: Jun Koike, Katsuhito Ogura, Yoshinori Nakanishi, Harumichi Tokuyama, Katsuyoshi Kido
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Publication number: 20030211190Abstract: An injection molding machine using a linear motor, has a linear motor serving as a linear drive mechanism; a temperature sensor configured to detect a temperature of a coil of said linear motor or an ambient temperature thereof; an input unit configured to input a signal of the temperature detected by said temperature sensor; a data converting unit configured to convert the detected temperature signal into temperature data; a storage unit, including a temperature data setting unit configured to preset an allowable temperature, etc.Type: ApplicationFiled: March 12, 2003Publication date: November 13, 2003Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: Makoto Nishizawa, Katsuhito Ogura, Katsuyoshi Kido, Harumichi Tokuyama, Hiroyuki Onuma