Patents Assigned to Japan Steel Works, Ltd.
  • Patent number: 12138836
    Abstract: The interior of a heating cylinder (2) is divided into a first stage (5) and a second stage (7) due to the shape of a screw (3). A first compression zone in which a resin is compressed is formed in the first stage (5). A starvation zone (7a) in which an inert gas is injected and a second compression zone in which the resin is compressed are formed in the second stage (7). A barrier flight (13) that is obtained by combining a main flight (14) and a sub-flight (15) having a greater lead angle than the main flight is provided to a section of the screw (3), said section corresponding to the first compression zone. A multiple flight is provided to another section of the screw (3), said section corresponding to the second stage (7).
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: November 12, 2024
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Akihiro Naito, Koichi Tamada, Hiromasa Uezono
  • Patent number: 12109748
    Abstract: An operation quantity determination device for determining an operation quantity related to a molding machine, includes an observation unit configured to acquire observation data obtained by observing a physical quantity related to molding by the molding machine when the molding is executed, a state expression unit configured to generate a state expression map expressing a state of the molding machine based on the observation data acquired by the observation unit, and an operation quantity output unit configured to output the operation quantity based on the state expression map generated by the state expression unit.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: October 8, 2024
    Assignee: The Japan Steel Works, Ltd.
    Inventors: Takayuki Hirano, Akira Morii, Takashi Akagi, Akihiko Saeki, Yuta Ashihara, Pichai Kankuekul
  • Publication number: 20240326305
    Abstract: A screw adjustment method in a thermosetting resin injection molding machine including a cylinder having a nozzle at a tip end of the cylinder and a screw accommodated in the cylinder. The screw adjustment method includes: contacting a screw and nozzle including bringing a tip end surface of the screw into contact with a tip end inner surface of an inner peripheral surface of the nozzle; moving the screw backward by a specified length after the contacting of the screw and the nozzle; and determining a screw position of the screw moved backward as a most forward position of the screw in a molding cycle.
    Type: Application
    Filed: March 26, 2024
    Publication date: October 3, 2024
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventor: Kiyotaka NAKAYAMA
  • Publication number: 20240316848
    Abstract: A mold clamping device includes: a fixed platen; a movable platen; a rotary platen provided on one platen of the fixed platen and the movable platen, to which a mold is attachable; and an extrusion device provided on the one platen and configured to extrude a molded article from the mold. The rotary platen is disposed at a side of a surface of the one platen facing the other platen to face the one platen and is rotatable via a bearing structure. The extrusion device is disposed on a surface of the one platen opposite to the surface facing the other platen. The bearing structure is configured to bear the rotary platen at a position away from a rotation center in a radial direction. The extrusion device has an ejector rod that protrudes radially inward than the bearing structure.
    Type: Application
    Filed: June 10, 2022
    Publication date: September 26, 2024
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventor: Souma MITANI
  • Publication number: 20240316844
    Abstract: A molding cycle stopping method includes: in a case of stopping an operation of a molding cycle in an injection device including a heating cylinder and a screw provided in the heating cylinder, performing a temperature lowering process including lowering a temperature of the heating cylinder from a molding cycle execution temperature to a standby temperature; and performing a continuous purge process including repeatedly purging a resin until a predetermined termination condition is satisfied.
    Type: Application
    Filed: March 20, 2024
    Publication date: September 26, 2024
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventors: Yasutaka OTSUJI, Takashi AKAGI
  • Patent number: 12090688
    Abstract: A film stretching apparatus includes: a pair of first and second link devices configured to be able to carry and stretch a film and each composed of a plurality of links coupled to form an endless chain; a heat treatment unit configured to cover a central portion of the first and second link devices and perform a heat treatment to the film; a sprocket (first link drive mechanism) arranged outside the heat treatment unit and on an inlet side of the film and configured to drive the plurality of links; a sprocket (second link drive mechanism) arranged outside the heat treatment unit and on an outlet side of the film and configured to drive the plurality of links; and a sprocket (link adjustment mechanism) arranged outside the heat treatment unit and on the outlet side of the film and configured to reduce a pitch of the plurality of links.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: September 17, 2024
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Naoaki Yoshimatsu, Ichiro Nakajima
  • Patent number: 12087911
    Abstract: A method of manufacturing an all-solid-state battery and an apparatus for manufacturing the same are provided. The method of manufacturing the all-solid-state battery includes: (a) a step of forming a non-woven fabric having a fiber made of a resin; (b) a step of applying a slurry containing solid electrolyte particles onto the non-woven fabric; (c) a step of drying the slurry on the non-woven fabric by a heater; (d) a step of pressurizing the slurry on the non-woven fabric by a roller; (e) a step of forming a positive electrode member on one surface of the solid electrolyte membrane; and (f) a step of forming a negative electrode member on the other surface of the solid electrolyte membrane. The step (a) is a step of forming the non-woven fabric by making a resin containing a polar filler fibrous by a laser electrospinning method.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: September 10, 2024
    Assignees: THE JAPAN STEEL WORKS, LTD., NATIONAL UNIVERSITY CORPORATION KYOTO INSTITUTE OF TECHNOLOGY
    Inventors: Ryo Ishiguro, Satoru Nakamura, Midori Takasaki, Sotaro Nambu
  • Patent number: 12083726
    Abstract: An abnormality detection apparatus for detecting an abnormality of a ball screw provided in an injection molding machine includes: a vibration sensor configured to detect vibration of the ball screw; and a computation unit configured to detect an abnormality of the ball screw based on information related to a distribution of frequency components obtained by frequency analysis of a vibration intensity detected by the vibration sensor, and information related to a distribution of frequency components obtained by frequency analysis of a vibration intensity detected when the ball screw, which is normal, operates.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: September 10, 2024
    Assignee: The Japan Steel Works, Ltd.
    Inventors: Keita Hihara, Soma Mitani, Masato Kawakita
  • Publication number: 20240286326
    Abstract: The present invention relates to a mold clamping device that includes: a fixed platen to which a mold is attachable; a movable platen configured to move closer towards or away from the fixed platen; and a rotary platen disposed to face a surface of the movable platen facing the fixed platen and to which a mold is attachable. A cylindrical protrusion is fixedly installed on the surface of the movable platen facing the fixed platen. The rotary platen is rotatably connected to the protrusion via a bearing structure.
    Type: Application
    Filed: May 26, 2022
    Publication date: August 29, 2024
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventor: Souma MITANI
  • Publication number: 20240280966
    Abstract: An injection molding machine includes a control device configured to estimate a service life for a plurality of managed components among components of an injection molding machine. The control device is configured to manage, for each of the managed components, a usage start date, an estimated service life date, and an estimated lead time. In a case where one or a plurality of the managed components reaches an advance notice date, the control device is configured to: take the managed component as a recommended replacement component; and provide component replacement recommendation information including information to prompt replacement and the estimated lead time for the recommended replacement component.
    Type: Application
    Filed: February 16, 2024
    Publication date: August 22, 2024
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventors: Hirotaka TAKEDO, Megumi Otani
  • Publication number: 20240278465
    Abstract: The present invention relates to a position determining mechanism for a rotary platen. The rotary platen is disposed to face a mold platen and is provided to be rotatable with respect to the mold platen. The position determining mechanism includes a position determination part which is provided to one platen of the mold platen and the rotary platen, and a position determination driving mechanism which is provided to the other platen, in which the position determination driving mechanism includes a press member and a pressing device, and when the press member is pressed by the pressing device and the press member is fitted into the position determination part, a rotation position of the rotary platen is determined.
    Type: Application
    Filed: June 10, 2022
    Publication date: August 22, 2024
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventor: Souma MITANI
  • Publication number: 20240246271
    Abstract: A rotary platen, which is disposed to face a mold platen, which is provided to be rotatable with respect to the mold platen, and to which a mold is attachable. A plate-form member is attached to a surface of the rotary plate that faces the mold platen. A contour shape of the plate-form member is non-circular.
    Type: Application
    Filed: June 22, 2022
    Publication date: July 25, 2024
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventor: Souma MITANI
  • Patent number: 12042852
    Abstract: Method and apparatus for creating at least one metal component by injecting flowable metal casting material into at least one cavity of a multi-part casting mold. Arranged successively downstream, apparatus includes a conveyor device for the flowable metal material, a distributor unit and the mold. The distributor unit includes an inlet channel connected to the conveyor device, and multiple outlet channels each having an outlet nozzle, such that casting material fed under pressure via the distributor inlet channel is injectable via the outlet nozzles into the at least one cavity of the mold to simultaneously fill the at least one cavity with casting material via the outlet nozzles. To produce the component with high process reliability in high quality, at least one of the outlet channels is connected to the mold in a sliding manner to enable relative movement between the outlet nozzle of the outlet channel and the mold.
    Type: Grant
    Filed: July 5, 2021
    Date of Patent: July 23, 2024
    Assignees: DYNAMIC METAL SYSTEMS R & D GMBH, THE JAPAN STEEL WORKS, LTD.
    Inventors: Christian Platzer, Lukas Simonitsch, Alexander Platzer
  • Patent number: 12030223
    Abstract: A strand manufacturing apparatus capable of reducing variations among diameters of resin strands without stopping the operation of an extruder is provided. A strand manufacturing apparatus includes a die in which an outflow hole for discharging a resin material contained in an extruder as a string-shaped resin strand is formed, an adjustment valve configured to adjust opening of the outflow hole, an image acquisition unit configured to acquire an image of the resin strand extruded from the outflow hole, a diameter acquisition unit configured to acquire a diameter of the resin strand in the image, and an opening adjustment unit configured to adjust the opening by driving the adjustment valve based on the diameter of the resin strand acquired by the diameter acquisition unit.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: July 9, 2024
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Yohei Fukuzawa, Yusuke Fukushi, Hideki Tomiyama
  • Patent number: 12023842
    Abstract: In a resin-film manufacturing apparatus of an embodiment, when a lip gap control is started, a difference between a state of a target heat bolt (THB) at a start of current control and a state of each of all the heat bolts at a start of last control is obtained, when the difference between the states of THB at the starts of the current and last control is a smallest one, a learning result of THB is set as an initial value of a control condition for THB, and when the difference between the states of THB is not the smallest one, either one of a learning result of the heat bolt of which the difference between the states is smaller than the difference between the states of THB and the learning result of THB is set as the initial value of the control condition for THB.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: July 2, 2024
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Ryuichiro Maenishi, Soma Tanaka
  • Publication number: 20240198570
    Abstract: An injection molding machine has a clamp that generates electromagnetic force and that secures a moving plate or a fixed plate using attractive force that is produced by the electromagnetic force; a pressure sensor that is provided in the clamp, wherein the pressure sensor measures contact pressure that acts between the moving plate or the fixed plate and the clamp; and a controller for performing a measure to prevent detachment of the moving plate or the fixed plate based on the contact pressure.
    Type: Application
    Filed: December 14, 2023
    Publication date: June 20, 2024
    Applicant: The Japan Steel Works, Ltd.
    Inventors: Keigo SUSA, Motomu FURUMOTO
  • Publication number: 20240198569
    Abstract: An injection molding machine has a clamp that generates electromagnetic force and that secures a moving plate or a fixed plate using attractive force that is produced by the electromagnetic force; and a controller that controls separation force that acts on the moving plate or the fixed plate such that the separation force is less than the attractive force.
    Type: Application
    Filed: December 14, 2023
    Publication date: June 20, 2024
    Applicant: The Japan Steel Works, Ltd.
    Inventors: Keigo SUSA, Motomu FURUMOTO
  • Patent number: 12011860
    Abstract: A screw can be driven along an axial direction of a heating barrel and rotatable. An injection piston drives the screw along the axial direction. An injection hydraulic cylinder is partitioned into a first chamber in which pressured hydraulic oil for driving the injection piston is supplied and a second chamber from which hydraulic oil is discharged, and drives the injection piston in the axial direction by hydraulic pressure. A first oil discharge port is blocked by the injection piston when the injection piston advances to a holding pressure switching position. A second oil discharge port can discharge the hydraulic oil from the front chamber regardless of the position of the injection piston. The first oil discharge port is disposed at a position opposed to the first oil discharge port across a center axis of the injection hydraulic cylinder, and is connected to the first oil discharge port.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: June 18, 2024
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Yutaka Nakagawa, Toshio Toyoshima, Takehiko Yanagiya
  • Publication number: 20240191395
    Abstract: A gallium nitride crystal, containing F in which a total content of halogen elements other than F is 1/100 or less of a content of F and including a main surface 1 having an inclination of 0 degrees or more and 10 degrees or less from a (000-1) crystal plane in which the main surface 1 is a specific main surface A satisfying a specific condition regarding facet growth region in which a first line segment which is a virtual line segment extending in a first direction on the specific main surface A and having a length of 40 mm and a second line segment which is a virtual line segment extending in a second direction perpendicular to the first direction on the specific main surface A and having a length of 40 mm can be drawn, has fewer specific crystal defects and is of high quality,
    Type: Application
    Filed: February 23, 2024
    Publication date: June 13, 2024
    Applicants: MITSUBISHI CHEMICAL CORPORATION, THE JAPAN STEEL WORKS, LTD.
    Inventors: Yutaka MIKAWA, Kouhei KURIMOTO, Quanxi BAO
  • Patent number: 12009183
    Abstract: In a film-forming technology using charged particles, a disturbance in film thickness distribution caused by leakage magnetic field is suppressed. A film-forming method embodies a technological idea of switching generation and stop of a magnetic field during a film-forming operation so as to stop the generation of the magnetic field during a period when plasma is generated and generate the magnetic field during a period when plasma is not generated.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: June 11, 2024
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Keisuke Washio, Masao Nakata, Tatsuya Matsumoto, Junichi Shida