Patents Assigned to Mitsui High-tec Inc.
  • Patent number: 11277059
    Abstract: A core product includes a first core block and a second core block. The first core block includes: a first block body including a first end surface and a second end surface, and a first resin injection portion; a first solidified resin provided in the first resin injection portion; and a first gate mark integrated with the first solidified resin and protruding outward more than the first end surface. The second core block includes: a second block body including a third end surface and a fourth end surface, and a second resin injection portion; a second solidified resin provided in the second resin injection portion; and a second gate mark integrated with the second solidified resin and protruding outward more than the fourth end surface. The first core block and the second core block are stacked such that the second end surface and the third end surface face each other.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: March 15, 2022
    Assignees: MITSUI HIGH-TEC, INC., HONDA MOTOR CO., LTD.
    Inventors: Kenji Kimura, Masato Kawano
  • Publication number: 20220055253
    Abstract: There are provided a method for manufacturing a core product, a method for removing a residual resin, and device for removing a residual resin including: supplying a molten resin; placing a conveying jig on a collection unit by conveying the conveying jig from a resin supply device to the collection unit together with a core body; splitting the resin solidified in a resin forming region from the resin solidified inside a resin flow path by removing the core body from the conveying jig; forming the residual resin which is a residue of the solidified resin inside the resin flow path and acquiring the core product including the core body and solidified resin formed in the resin forming region; and dropping the residual resin from the resin flow path into the collection unit by causing an extrusion unit to abut against the residual resin from above.
    Type: Application
    Filed: August 11, 2021
    Publication date: February 24, 2022
    Applicant: MITSUI HIGH-TEC, INC.
    Inventors: Shuhei KOTANI, Katsumi AMANO
  • Publication number: 20220060094
    Abstract: There are provided a core unit manufacturing apparatus and a core unit manufacturing method including: a molding device that fills a resin into a space portion in a core body; a resin transfer unit that transfers a resin material to the molding device to supply the resin material thereto; and a core transfer unit that carries the core body in and out of a part between a pair of dies of the molding device. The resin transfer unit and the core transfer unit are arranged such that: the resin transfer unit supplies the resin to the molding device from one side position of side surfaces of the molding device; and the core transfer unit carries the core body in and out of the molding device from the other side position of the side surfaces of the molding device, the other side position being different from one side position.
    Type: Application
    Filed: August 10, 2021
    Publication date: February 24, 2022
    Applicant: MITSUI HIGH-TEC, INC.
    Inventors: Yuji TAKEDA, Katsumi AMANO, Takashi FUKUMOTO
  • Patent number: 11258339
    Abstract: A manufacturing method of an iron core product includes: heating an iron core body attached to a jig together with the jig; removing the iron core body from the jig when the jig and the iron core body are heated to denote a first temperature; and separately cooling, after removing the iron core body from the jig, the iron core body and the jig such that the iron core body is at a second temperature lower than the first temperature and the jig is at a third temperature lower than the first temperature.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: February 22, 2022
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Shigeru Nagasugi, Takashi Fukumoto, Jin Oda
  • Patent number: 11218059
    Abstract: In a case where a permanent magnet is inserted into each of a plurality of magnet-insert holes of a laminated iron core and then a resin is injected into the plurality of magnet-insert holes from a resin pool pot formed in one of an upper die and a lower die with the laminated iron core pinched and the resin is cured inside the plurality of magnet-insert holes to fix the permanent magnets to the laminated iron core, a dummy plate which abuts on the laminated iron core and includes a gate hole for allowing passage of the resin delivered from the resin pool pot and guiding the resin to the plurality of magnet-insert holes. The gate hole partially overlaps with at least two of the plurality of magnet-insert holes in a plan view of the dummy plate and the laminated iron core.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: January 4, 2022
    Assignee: MITSUI HIGH-TEC, INC.
    Inventor: Iwao Myojin
  • Patent number: 11190087
    Abstract: A method for manufacturing a laminated iron core including placing a laminated iron core body on a conveyance jig. Downwardly moving the conveyance jig by a lift and downwardly moving an upper die with respect to a lower die of the die unit. The lift being mounted so as to be unaffixed to both the die unit and the conveyance jig. Holding the laminated iron core body placed on the conveyance jig from both sides in a lamination direction of the plurality of iron core pieces between the lower die and the upper die, the lower die coming into contact with the conveyance jig. Injecting a resin into a through hole formed through the laminated iron core body held by the die unit in the lamination direction of the plurality of iron core pieces from the lower die through the conveyance jig or from the upper die.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: November 30, 2021
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Hirotoshi Mabu, Hidemi Sasaki
  • Patent number: 11174527
    Abstract: A heat-treatment apparatus includes a casing, a loader which loads a workpiece to an inner part of the casing in order to apply a heat-treatment to the workpiece, and a canopy surface provided in the casing to cover the workpiece. The canopy surface includes a slope way with a sectional configuration where the canopy surface is cut on a plane vertical to a conveying direction of the workpiece inside the casing. The slope way includes a highest point and a downward inclined surface extending from the highest point to an outside of a zone between a perpendicular line extending from a left end of the workpiece and a perpendicular line extending from a right end of the workpiece.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: November 16, 2021
    Assignees: MITSUI HIGH-TEC, INC., KOYO THERMO SYSTEMS CO., LTD.
    Inventors: Takeaki Kozono, Yusuke Hasuo, Showa Tachisato, Shin Matsuda
  • Patent number: 11094457
    Abstract: A method for manufacturing a laminated iron core includes preheating a laminated body in which a plurality of iron core pieces are laminated and which includes a resin filling hole, measuring a temperature of the laminated body after preheating the laminated body, determining whether or not the temperature measured is within a predetermined range, feeding the laminated body into a molding device in a case where it is determined that the temperature is within the predetermined range, and filling the resin filling hole of the laminated body with a resin material in the molding device.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: August 17, 2021
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Katsumi Amano, Yukiya Fukunaga, Takashi Fukumoto
  • Publication number: 20210194336
    Abstract: A method for manufacturing a laminated body includes: laminating an electromagnetic steel plate to form the laminated body; performing an annealing process on the laminated body; acquiring a before-annealing lamination thickness information on a thickness of the laminated body before performing the annealing process on the laminated body; and when the before-annealing lamination thickness information does not satisfy a before-annealing criterion which is predetermined, adjusting a lamination condition of the electromagnetic steel plate such that the before-annealing lamination thickness information satisfies the before-annealing criterion.
    Type: Application
    Filed: April 12, 2019
    Publication date: June 24, 2021
    Applicant: MITSUI HIGH-TEC, INC.
    Inventors: Shigeru NAGASUGI, Takashi FUKUMOTO, Jin ODA
  • Publication number: 20210143712
    Abstract: A manufacturing method of a laminated iron core by laminating a plurality of blanked members to form a laminate, the laminate including a pair of first and second end surfaces and the plurality of blanked members being interlocked by a caulk in a lamination direction of the laminate, includes: forming the laminate such that a protrusion of the caulk protrudes downward from the first end surface being in a downward state; placing the laminate on support such that the protrusion is not in contact with a support surface of the support; and processing the laminate in a state where the laminate is placed on the support.
    Type: Application
    Filed: March 5, 2019
    Publication date: May 13, 2021
    Applicant: MITSUI HIGH-TEC, INC.
    Inventors: Shigeru NAGASUGI, Takashi FUKUMOTO, Jin ODA
  • Patent number: 10981211
    Abstract: A processing device is provided which feeds a long plate body from an upstream side to a downstream side and sequentially carries out a press work including a blanking work to the long plate body. The processing device includes a plurality of stages provided along a feed direction of the long plate body, which has a die that applies the press work to the long plate body and a plurality of lifters provided along the feed direction of the long plate body which have lift-up parts that lift up the long plate body from the die. In the plurality of lifters, clearances by the lift-up parts of the lifters arranged in the downstream side are set to be larger than the clearances by the lift-up parts of the lifters arranged in the upstream side.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: April 20, 2021
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Masahiko Furuta, Kazufumi Yonemura
  • Publication number: 20210091645
    Abstract: A manufacturing method of an iron core product includes: heating an iron core body attached to a jig together with the jig; removing the iron core body from the jig when the jig and the iron core body are heated to denote a first temperature; and separately cooling, after removing the iron core body from the jig, the iron core body and the jig such that the iron core body is at a second temperature lower than the first temperature and the jig is at a third temperature lower than the first temperature.
    Type: Application
    Filed: March 5, 2019
    Publication date: March 25, 2021
    Applicant: MITSUI HIGH-TEC, INC.
    Inventors: Shigeru NAGASUGI, Takashi FUKUMOTO, Jin ODA
  • Publication number: 20210091644
    Abstract: A device and a method for manufacturing a laminated iron core are provided for including: a first supply unit of supplying a first adhesive to a first part of a predetermined region, the predetermined region corresponding to a punched member of a strip-shaped metal sheet intermittently fed in one predetermined direction; a second supply unit arranged at a downstream side in a conveyance direction of the metal sheet with respect to the first supply unit, and of supplying a second adhesive to a second part different from the first part of the predetermined region; and a punching unit of punching the predetermined region of the metal sheet to which the first supply unit and the second supply unit supply the first adhesive and the second adhesive, so as to form the punched member having the first adhesive and the second adhesive applied on the first part and the second part.
    Type: Application
    Filed: September 1, 2020
    Publication date: March 25, 2021
    Applicant: MITSUI HIGH-TEC, INC.
    Inventor: Takashi MARUYAMA
  • Publication number: 20210067014
    Abstract: A manufacturing method of the a laminated iron core includes: laminating a plurality of punched members to form a temporary laminate; pressing the temporary laminate with a first load to obtain a laminate; and processing the laminate while pressing the laminate with a second load that is equal to or less than the first load. The manufacturing method of the laminated iron core according to the present disclosure provides a manufacturing method in which subsequent processing can be favorably performed after the laminate is obtained.
    Type: Application
    Filed: March 5, 2019
    Publication date: March 4, 2021
    Applicant: MITSUI HIGH-TEC, INC.
    Inventors: Shigeru NAGASUGI, Takashi FUKUMOTO, Jin ODA
  • Publication number: 20210060635
    Abstract: A device for manufacturing a laminated iron core includes: a punch unit configured to form protrusions, and including N number of punches as a set, the N being a natural number larger than M; and N number of auxiliary punches. The N number of auxiliary punches are configured such that L number of auxiliary punches selected from the N number of auxiliary punches performs a nullification processing on a metal sheet, the nullification processing being configured to nullify a processing with the L number of punches among the N number of punches, the L being the natural number that is obtained by subtracting the M from the N. According to the above configurations, for example, since a processing position with the plurality of punches is limited in one position, a positional accuracy of protrusions formed in punched members with the plurality of punches is improved.
    Type: Application
    Filed: August 19, 2020
    Publication date: March 4, 2021
    Applicant: MITSUI HIGH-TEC, INC.
    Inventor: Takashi MARUYAMA
  • Patent number: 10903146
    Abstract: [Problem] To provide an electrode connection structure and the like in which a plurality of elongated leads are arranged in parallel and a longitudinal side surface of each lead is connected to an electrode by plating treatment with high quality. [Solution] An electrode connection structure in which a semiconductor chip 12 electrode and/or a substrate electrode is connected to a plurality of elongated leads 11 of a lead frame 10 by plating. The plurality of elongated leads 11 of the lead frame 10 are arranged in parallel, and a longitudinal side surface of each lead 11 is connected to the semiconductor chip 12 electrode and/or the substrate electrode by plating.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: January 26, 2021
    Assignees: WASEDA UNIVERSITY, MITSUI HIGH-TEC, INC.
    Inventors: Kohei Tatsumi, Kazutoshi Ueda, Nobuaki Sato, Koji Shimizu
  • Patent number: 10890438
    Abstract: There is provided a method for measuring a laminated iron core. The method includes preparing a laminated iron core in which two or more kinds of metal plates with different shapes are laminated and a deformed part is formed inside a hole continuing in a lamination direction of the laminated iron core, acquiring a surface profile data indicating a surface shape of the deformed part through an inlet of the hole by a non-contact sensor located in an outside of the hole, and calculating a length from the inlet of the hole to the deformed part in the lamination direction by a calculator based on the surface profile data.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: January 12, 2021
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Go Kato, Takashi Fukumoto, Kazuki Namaike, Syoichi Ono
  • Patent number: 10876192
    Abstract: A method of manufacturing a separator includes subjecting a metal thin sheet material to be transported to stepwise forming working at an identical location by a plurality of press machines having different working shapes and arranged sequentially from an upstream side to a downstream side in a transport direction of the metal thin sheet material to form a flow passage groove. The thin sheet material is subjected to annealing treatment in at least one space of spaces between the press machines arranged adjacent to each other in the transport direction of the thin sheet material.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: December 29, 2020
    Assignee: MITSUI HIGH-TEC, INC.
    Inventor: Kiyohisa Maki
  • Patent number: 10826362
    Abstract: In a laminated iron core formed by laminating a plurality of iron core pieces, at least one of an inner circumferential portion or an outer circumferential portion of the iron core piece is provided with a connection recess part which is connected with a connection part of a caulking piece detachable in a radial direction from the connection recess part, an outer circumferential edge of the connection part has the same shape as an inner circumferential edge of the connection recess part, and a bottom portion of the connection recess part is not configured by a single straight line.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: November 3, 2020
    Assignee: MITSUI HIGH-TEC, INC.
    Inventor: Yusuke Hasuo
  • Patent number: 10784732
    Abstract: A method of punching a core piece having a bridge formed between a radially-outer end of a magnet insertion hole and an outer region of the core piece. The method includes providing a magnetic steel sheet and a punch configured to form the core piece, punching out the magnet insertion hole from the magnetic steel sheet, and forming a through hole that defines a radially-outer contour of the bridge by punching the magnetic steel sheet. The method includes forming the bridge between the radially-outer end of magnet insertion hole and the outer region of the core piece, and blanking the core piece, from the magnetic steel sheet, in an exterior shape with the punch while avoiding an edge of the punch from coinciding with the radially-outer contour of the bridge.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: September 22, 2020
    Assignees: MITSUI HIGH-TEC, INC., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinya Sano, Masahiro Izumi