Patents Assigned to Toshiba Machine Co., Ltd.
  • Publication number: 20180361632
    Abstract: To provide a method of manufacturing a press molding by molding a molding material comprising reinforced fibers and a thermoplastic resin by a cold press method. The method of manufacturing a press molding comprising reinforced fibers and a thermoplastic resin, includes the steps of: holding the molding material heated at a temperature not lower than the softening temperature with a plurality of grippers installed on a carrier; carrying the molding material between the upper mold and the lower mold of a mold for molding; pushing the molding material with pushers to preform it at a predetermined preforming rate; and press molding the preformed molding by closing the upper mold and the lower mold and applying pressure.
    Type: Application
    Filed: December 16, 2016
    Publication date: December 20, 2018
    Applicants: TEIJIN LIMITED, TOSHIBA MACHINE CO., LTD.
    Inventors: Hodaka YOKOMIZO, Tetsuya YONEDA, Akihiko OBATA, Kazuhito SATO, Chiaki SHIGEMATSU
  • Patent number: 7325418
    Abstract: The present invention is directed to reduce the total footprint of a press forming system for glass having a plurality of press units, and also to increase an actual availability of each press unit. A plurality of press units are arranged in two parallel rows and a first transfer robot is arranged at the center of the space between the two rows. In adjacent of the moving area of the first transfer robot, a palette changer is arranged. A tray in use is mounted on a first base of the palette changer and a stand-by tray before use is placed on a second base. Blanks and formed products are stored in the tray. Press units equipped with second transfer robots, respectively. In front of the press units, intermediate transfer points are respectively provided for temporarily storing a blank and a formed product.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: February 5, 2008
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Yasuo Yamamoto, Isao Matsuzuki, Hiroshi Murakoshi, Hirotaka Masaki
  • Patent number: 7322814
    Abstract: To form a film or sheet relatively thin and needing a high degree of precision in thickness, such as for an optical use, while suppressing temperature fluctuations at one side opposite to the other side in contact with an outer peripheral surface of a roll (11), an outer peripheral surface of the roll is covered, with a necessary gap (t) left, by a windshield (20) of a double-layered structure having a thermally insulating property.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: January 29, 2008
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Kenji Nozawa, Takayoshi Sano
  • Patent number: 7252796
    Abstract: A movable die is held on the front face of a movable platen. Ejector pins are incorporated in the movable die. An ejector unit that is provided with an ejector plate, actuator rods, etc., is mounted on the back of the movable platen. In ejecting a molded product from a die face, the ejector plate is advanced to cause the actuator rods to push out the ejector pins. In the ejecting load monitoring method of the invention, a plurality of monitoring sections are provided in a movement area of the ejector plate (or the actuator rod), and an upper limit value of a forward thrust load of the ejector plate is previously set for each monitoring section. An alarm is issued when the forward thrust load of the ejector plate reaches the upper limit value set for any of the monitoring sections during the ejecting operation.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: August 7, 2007
    Assignee: Toshiba Machine Co., Ltd.
    Inventor: Makoto Nishizawa
  • Patent number: 7147450
    Abstract: An injection apparatus comprises a screw drive shaft, a motor which generates torque to rotate the screw, a speed reducer, and a power transmission mechanism. The power transmission mechanism has a first pulley on an output shaft of the motor, a second pulley on an input shaft of the speed reducer, and a belt passed around the first and second pulleys. The speed reducer is located between the second pulley and the screw drive shaft. The speed reducer is formed of a planetary gear mechanism, and both its input and output shafts are situated on an extension of an axis of the screw drive shaft.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: December 12, 2006
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Toshihiro Kasai, Kazuhito Kobayashi, Junsuke Kawai
  • Patent number: 7134298
    Abstract: An object of the present invention is to provide a press-forming method for glass capable of uniformly heating press dies and a preform and preventing oxidation of the press dies. According to the press-forming method for glass of the present invention, a preform is placed between a pair of press dies in a press-forming chamber and the preform and the press dies are heated in an inert gas atmosphere. After the temperature of the press dies reaches a predetermined value, evacuation of the press-forming chamber is initiated. After the pressure of the press-forming chamber reaches a predetermined value and the temperature of the press-forming chamber are stabilized at a second predetermined value, the preform is press-formed. Preferably, an exhaust rate for evacuating the chamber is limited to a predetermined value or less.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: November 14, 2006
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Satoshi Fukuyama, Hiroshi Murakoshi, Shusaku Matsumura
  • Publication number: 20060147822
    Abstract: A pattern forming apparatus includes a drawing chamber having a drawing substrate on which an original pattern is drawn, a first temperature control unit having a first temperature regulator to make the temperature of the drawing chamber constant, and a constant-temperature member arranged near the drawing substrate. The pattern forming apparatus further includes a second temperature control unit having a second temperature regulator. The second temperature control unit is configured to control the set temperature of the constant-temperature member independently such that the temperature of the drawing substrate becomes substantially constant when the original pattern is drawn.
    Type: Application
    Filed: March 1, 2006
    Publication date: July 6, 2006
    Applicants: TOSHIBA MACHINE CO., LTD., KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryoichi Hirano, Satoshi Imura, Noriaki Nakayamada
  • Patent number: 7036980
    Abstract: A pattern forming apparatus includes a drawing chamber having a drawing substrate on which an original pattern is drawn, a first temperature control unit having a first temperature regulator to make the temperature of the drawing chamber constant, and a constant-temperature member arranged near the drawing substrate. The pattern forming apparatus further includes a second temperature control unit having a second temperature regulator. The second temperature control unit is configured to control the set temperature of the constant-temperature member independently such that the temperature of the drawing substrate becomes substantially constant when the original pattern is drawn.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: May 2, 2006
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Machine Co., Ltd.
    Inventors: Ryoichi Hirano, Satoshi Imura, Noriaki Nakayamada
  • Patent number: 7005998
    Abstract: The present invention relates to a method of detecting a malfunction during a die clamping step in an injection molding machine. A reference pattern is taken which shows a relation between a die clamping force and a position of a movable platen when die clamping is normally carried out. One or more monitoring sections are set in advance with respect to that position on the basis of the reference pattern and an allowable limit value of a die clamping force in the respective monitoring sections is also set in advance in a form of a linear function of the position. The die clamping force is monitored in the respective monitoring section during a respective die clamping step and, when its value exceeds the allowable limit value, it is decided that a malfunction occurs and an alarm is issued.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: February 28, 2006
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Takashi Yamazaki, Haruyuki Matsubayashi, Takeshi Abe
  • Publication number: 20060034344
    Abstract: A pattern forming apparatus includes a drawing chamber having a drawing substrate on which an original pattern is drawn, a first temperature control unit having a first temperature regulator to make the temperature of the drawing chamber constant, and a constant-temperature member arranged near the drawing substrate. The pattern forming apparatus further includes a second temperature control unit having a second temperature regulator. The second temperature control unit is configured to control the set temperature of the constant-temperature member independently such that the temperature of the drawing substrate becomes substantially constant when the original pattern is drawn.
    Type: Application
    Filed: December 27, 2002
    Publication date: February 16, 2006
    Applicants: TOSHIBA MACHINE CO.,LTD, KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryoichi Hirano, Satoshi Imura, Noriaki Nakayamada
  • Patent number: 6984120
    Abstract: An object of the present invention is to suppress a clamping force from sharply increasing when dies are clamped in an electric direct-acting die clamping unit of an injection molding machine. A movable platen is arranged to face a stationary platen. A stationary die is attached to the front surface of the stationary platen, whereas a movable die is attached to the front surface of the movable platen. The movable platen is connected to the front surface of a backup plate via four coil springs. A nut of a ball screw is fixed at each of diagonally-opposed corners of the backup plate. The threaded rod of the ball screw passes through the backup plate via the nut. The tip portion of the threaded rod is rotatably connected to the stationary platen. The rear end portion of the threaded rod is connected to a motor.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: January 10, 2006
    Assignee: Toshiba Machine Co., LTD
    Inventors: Akira Yoshinaga, Jun Koike, Fumiyuki Kato, Makoto Nishizawa
  • Patent number: 6980882
    Abstract: When text information is inputted as electronic data from an operation panel of a display apparatus, which functions as a human-machine interface of an injection molding machine, an operation panel controller of the display apparatus stores the electronic data of the inputted text information. When an instruction to display text information is emitted from the operation panel, the operation panel controller displays the stored electronic text information in the display apparatus, according to the instruction.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: December 27, 2005
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Takashi Yamazaki, Hiroshi Katsuta, Makoto Nishizawa
  • Publication number: 20050179155
    Abstract: The present invention relates to a method of detecting a malfunction during a die clamping step in an injection molding machine. A reference pattern is taken which shows a relation between a die clamping force and a position of a movable platen when die clamping is normally carried out. One or more monitoring sections are set in advance with respect to that position on the basis of the reference pattern and an allowable limit value of a die clamping force in the respective monitoring sections is also set in advance in a form of a linear function of the position. The die clamping force is monitored in the respective monitoring section during a respective die clamping step and, when its value exceeds the allowable limit value, it is decided that a malfunction occurs and an alarm is issued.
    Type: Application
    Filed: April 12, 2005
    Publication date: August 18, 2005
    Applicant: TOSHIBA MACHINE CO., LTD
    Inventors: Takashi Yamazaki, Haruyuki Matsubayashi, Takeshi Abe
  • Patent number: 6931300
    Abstract: A control device which controls an industrial machine according to an aspect of the invention includes a unit which determines whether the user is a registrant registered in advance, a unit which, when the user is determined to be the registrant, selects one of a setting permission state and a setting inhibition state individually for at least one operating condition of the industrial machine in accordance with the operation of the registrant, and a setting unit which accepts from the registrant a setting of the operating condition for which the setting permission state is selected.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: August 16, 2005
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Takashi Yamazaki, Makoto Nishizawa, Hiroshi Katsuta
  • Patent number: 6928838
    Abstract: The forming apparatus has top and bottom die assemblies which form a heated silica glass material by press forming. These top and bottom die assemblies include, respectively, mold dies, which are made of isotropic carbon, and core molds, which are made of vitrified carbon. The heating and pressing time of a silica glass element, which requires a high forming temperature, is shortened by pinching the silica glass material between top and bottom core molds by controlling a torque so as to produce a close contact condition which permits heat transfer from the top and bottom core molds to the silica glass material between the top and bottom core molds.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: August 16, 2005
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Hiroshi Murakoshi, Shusaku Matsumura
  • Patent number: 6914537
    Abstract: The present invention is directed to a method of monitoring operation data for quality control with a little possibility that a nondefective product is mistakenly determined as a defective product even if the operation data fluctuates in a large waviness curve. Every time an operation data piece for quality control is obtained, a moving average of the predetermined number of data pieces lately obtained is calculated. When the deviation of a data piece from the moving average exceeds the tolerance limit, an alarm is generated. By employing the method of the present invention for monitoring operation data such as charging time, injection time and the amount of cushion in an injection-molding machine, the accuracy of determination as to a defective or nondefective can be improved.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: July 5, 2005
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Akira Yoshinaga, Makoto Nishizawa, Fumiyuki Kato, Jun Koike, Hiroshi Katsuta
  • Patent number: 6906631
    Abstract: The present invention relates to a method of detecting a malfunction during a die clamping step in an injection molding machine. A reference pattern is taken which shows a relation between a die clamping force and a position of a movable platen when die clamping is normally carried out. One or more monitoring sections are set in advance with respect to that position on the basis of the reference pattern and an allowable limit value of a die clamping force in the respective monitoring sections is also set in advance in a form of a linear function of the position. The die clamping force is monitored in the respective monitoring section during a respective die clamping step and, when its value exceeds the allowable limit value, it is decided that a malfunction occurs and an alarm is issued.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: June 14, 2005
    Assignee: Toshiba Machine Co., LTD
    Inventors: Takashi Yamazaki, Haruyuki Matsubayashi, Takeshi Abe
  • Patent number: 6848274
    Abstract: Provided is an apparatus for forming glass elements, which includes top and bottom die assemblies, each of the die assemblies comprising a core mold, a mold die which supports the core mold, and a die plate, and a glass material being interposed between the top and bottom core molds, a first fastening member, which fastens the mold die and bottom die plate of the bottom die assembly together, a second fastening member, which fastens the die plate of the bottom die assembly and the heat insulating cylinder together, a third fastening member, which fastens the mold die and die plate of the top die assembly together, and a fourth fastening member, which fastens the die plate of the top die assembly and the heat insulating cylinder together. Each of the first to fourth fastening members is made of a material selected from the group consisting of carbon and molybdenum.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: February 1, 2005
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Hiroshi Murakoshi, Shusaku Matsumura
  • Publication number: 20040265411
    Abstract: To form a film or sheet relatively thin and needing a high degree of precision in thickness, such as for an optical use, while suppressing temperature fluctuations at one side opposite to the other side in contact with an outer peripheral surface of a roll (11), an outer peripheral surface of the roll is covered, with a necessary gap (t) left, by a windshield (20) of a double-layered structure having a thermally insulating property.
    Type: Application
    Filed: June 25, 2004
    Publication date: December 30, 2004
    Applicant: TOSHIBA MACHINE CO., LTD.
    Inventors: Kenji Nozawa, Takayoshi Sano
  • Patent number: 6823695
    Abstract: An object of the present invention is to enable to use a common transfer machine for transferring performs to and for transferring products from a press-forming system for glass having a plurality of press units. The press-forming system for glass has a plurality of press units. A linear moving stage is arranged in the proximity of the press units. A transfer robot is mounted on the linear moving stage. A pallet changer is arranged in the proximity of an end of the linear moving stage. A tray presently in use is mounted on a first mount and a new tray on standby is mounted on a second mount on the pallet changer. The inner space of the tray is partitioned into sections so as to correspond to press units in number. In each section, a plurality of pockets is arranged for storing preforms or products one by one.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: November 30, 2004
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Satoshi Fukuyama, Hiroaki Fujii, Isao Matsuzuki, Hirotaka Masaki