Patents Assigned to Nissei Plastic Industrial Co., Ltd.
  • Publication number: 20210001529
    Abstract: A detector attachment unit is provided that has at least two or more mounting hole sections for which the temperature detector is detachably attached to the outer surface of the heating cylinder and the temperature detector can be attached at different selected positions in at least the axial direction of the heating cylinder. The temperature control system includes an inner wall face temperature conversion function unit to perform conversion processing to convert the heating temperature detected by the temperature detector to the inner wall face temperature of the heating cylinder, and an inner wall face temperature display function unit to perform at least display processing on the inner wall face temperature obtained by this inner wall face temperature conversion function unit.
    Type: Application
    Filed: March 13, 2019
    Publication date: January 7, 2021
    Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventor: Makoto KOZUKA
  • Patent number: 10882105
    Abstract: When the deceleration start point is reached, the meter-in side of the hydraulic driving actuator is subjected to a flow rate control to thereby start the deceleration control processing. The position to which the movable unit is moved is detected to use a speed instruction corresponding to the movement position to subject the hydraulic driving actuator to a meter-in control. The position to which the movable unit is moved is detected to calculate the moving speed of the movable unit. Based on the speed instruction, the moving speed is subjected to the feedback control using the meter-out control to the hydraulic driving actuator.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: January 5, 2021
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventors: Hiroyuki Miyazaki, Satomi Sakaki, Kenichi Hayashi, Isamu Komamura
  • Publication number: 20200164430
    Abstract: When the deceleration start point is reached, the meter-in side of the hydraulic driving actuator is subjected to a flow rate control to thereby start the deceleration control processing. The position to which the movable unit is moved is detected to use a speed instruction corresponding to the movement position to subject the hydraulic driving actuator to a meter-in control. The position to which the movable unit is moved is detected to calculate the moving speed of the movable unit. Based on the speed instruction, the moving speed is subjected to the feedback control using the meter-out control to the hydraulic driving actuator.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 28, 2020
    Applicant: NISSEI PLASTIC INDUSTRIAL CO.,LTD.
    Inventors: Hiroyuki MIYAZAKI, Satomi SAKAKI, Kenichi HAYASHI, Isamu KOMAMURA
  • Patent number: 10654207
    Abstract: A specific mold status Ac is caused in advance in which the interval of an inner portion Xi in the parting plane direction of a parting gap C between a fixed mold 2c and a movable mold 2m during the injection filling is larger than the interval of an outer edge portion Xo and the interval of the outer edge portion Xo is equal to or lower than a predetermined size Ls including 0. A molding injection pressure Pi is set as an injection pressure at which a non-defective product can be molded and a molding mold clamping force Pc is set as a mold clamping force by which a non-defective product can be molded. During the production, a mold 2 is clamped by a molding mold clamping force Pc and the clamped mold 2 is filled with the injected resin R by a molding injection pressure Pi. After a predetermined cooling time Tc has passed, a molded piece G is removed.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: May 19, 2020
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventor: Hirofumi Murata
  • Patent number: 10611068
    Abstract: A safety cover (20) for a mold clamping device that surrounds the mold clamping device (10) of an injection molding machine. The safety cover (20) includes a support frame (21) attached to the mold clamping device (10), a safety door (23), and a connecting mechanism (40) that connects an upper portion of the safety door (23) to the support frame (21). The connecting mechanism (40) includes a first rail (41) on the support frame (21), a second rail (42) on the safety door (23), and an intermediate plate (45) arranged between the first rail (41) and the second rail (42).
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: April 7, 2020
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventor: Daiki Tanemura
  • Publication number: 20200055223
    Abstract: A specific mold status Ac is caused in advance in which the interval of an inner portion Xi in the parting plane direction of a parting gap C between a fixed mold 2c and a movable mold 2m during the injection filling is larger than the interval of an outer edge portion Xo and the interval of the outer edge portion Xo is equal to or lower than a predetermined size Ls including 0. A molding injection pressure Pi is set as an injection pressure at which a non-defective product can be molded and a molding mold clamping force Pc is set as a mold clamping force by which a non-defective product can be molded. During the production, a mold 2 is clamped by a molding mold clamping force Pc and the clamped mold 2 is filled with the injected resin R by a molding injection pressure Pi. After a predetermined cooling time Tc has passed, a molded piece G is removed.
    Type: Application
    Filed: October 24, 2019
    Publication date: February 20, 2020
    Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventor: Hirofumi MURATA
  • Publication number: 20200055224
    Abstract: A database 3 is previously set which is related to oxidation induction times Tg indicating the deteriorations of individual resins R based on the combinations of a plurality of oxidation induction conditions X including at least different types of resins R.
    Type: Application
    Filed: January 19, 2018
    Publication date: February 20, 2020
    Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventor: Makoto KOZUKA
  • Patent number: 10549463
    Abstract: A base for an injection molding machine has two side frames extending parallel with the axis of a drive actuator. Each of the side frames includes a lower flange supported by a bed, an upper flange disposed parallel with the lower flange, at least two webs connecting the upper flange and the lower flange, and a web reinforcing member fixed to the webs and penetrating through the webs. The side frames each have stiffeners connected between the lower and upper flanges and to one of the webs.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: February 4, 2020
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventors: Atsushi Murata, Daiki Tanemura, Satoshi Hoshino
  • Publication number: 20190381711
    Abstract: An injection molding machine includes an injection apparatus having a screw rotation driving section for rotating a screw inserted to a heat sleeve and a screw forward/rear move driving section for forwardly or rearwardly moving the screw at least by a hydraulic cylinder, including a unique screw for which an L/D ratio between a screw length and a screw diameter is set as a specific value to the injection apparatus. The injection apparatus includes a cylinder attachment mechanism having a cylinder detachable section that provides the detachability of at least two or more different types of hydraulic cylinders adaptable to a molded piece that can be molded by the unique screw.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventors: Hirofumi MURATA, Takemi UEHARA, Hozumi YODA
  • Patent number: 10493679
    Abstract: When a plurality of sets of molds, spaced a predetermined distance along a circumferential direction of a rotary platen, are attached through predetermined clamp portions to a mold attachment surface of the rotary platen supported by a movable platen included in a mold clamping device and a mold attachment surface of a fixed platen opposite this mold attachment surface, at least a mold clamping force, when the mold is attached, is previously limited to a limited mold clamping force lower than a mold clamping force at the time of molding. A mold attaching mode is set that has an interlock function of preventing the limitation from being cancelled until a condition under which all the clamp portions are turned on is satisfied. The selected mold attaching mode is performed when the molds are attached and the plurality of sets of molds are sequentially attached set by set.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: December 3, 2019
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventor: Keiichi Tozawa
  • Patent number: 10427338
    Abstract: A heating cylinder cover for covering a heating cylinder includes a temperature control mechanism in which at least a plurality of heating units are provided on an outer circumferential surface of a heating cylinder body along an axial direction. The heating cylinder cover includes a heat-retaining cover part that is integrally provided with a cover body part and a plurality of partition parts. The cover body part is attached to the heating cylinder thereby forming a predetermined covered space between the cover body part and the temperature control mechanism and covers at least an upper half part of the heating cylinder. The partition parts project from an inner surface of this cover body part toward the temperature control mechanism and divides the covered space into a plurality of closed spaces.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: October 1, 2019
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventors: Yuichi Sakurada, Yoshihiko Takahashi, Takahiro Kouda
  • Patent number: 10384381
    Abstract: When a plurality of striped molded products are molded at a time, the molded products having a striped pattern and an outstanding design property are obtained by preventing part of molten resins from being unevenly distributed in an inappropriate manner when being fed into a cavity of a metal mold. A hot runner nozzle is provided with a first resin flow path and a plurality of second resin flow paths. The first flow path has a funnel section which continues with a nozzle gate at a centripetal position and which allows a first molten resin to be gathered at the centripetal position of the funnel section so as to feed the resin into the nozzle gate. The second resin flow paths have a plurality of corresponding discharge ports facing and communicating with the funnel section of the first resin flow path, each of the discharge ports being disposed around the centripetal position, so that the second molten resin different from the first molten resin is fed into the funnel section.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: August 20, 2019
    Assignee: Nissei Plastic Industrial Co., Ltd.
    Inventors: Yasuhiko Takeuchi, Minoru Yamazaki, Yoshiharu Yanagimachi, Kouichi Shimizu
  • Patent number: 10378525
    Abstract: A motor-driven apparatus includes a pump and a servo motor connected respectively to outer sides of opposed upstanding support plates. A pump shaft and a servo motor shaft extend horizontally toward each other into a space between the support plates and are coupled together by a flexible coupling. The servo motor includes a fan cover enclosing and spaced from a motor frame of the servo motor. A cooling fan disposed inside the fan cover circulates air in the space between the fan cover and the motor frame to air-cool the motor frame.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: August 13, 2019
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventors: Toshiaki Nakamura, Kenichi Hayashi, Daiki Tanemura
  • Patent number: 10300529
    Abstract: A mold clamping apparatus of the type including a mold opening/closing actuator and a mold clamping cylinder, wherein rails for guiding a movable platen are disposed on a base, and the mold clamping cylinder has a left leg and a right leg each disposed between one pair of left and right rails of the rails. The rails provided for guiding the movable platen is used also as a side guide for the mold clamping cylinder. This arrangement can obviate the need for a separate guide member.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: May 28, 2019
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventors: Atsushi Murata, Daiki Tanemura, Hiroo Okubo
  • Patent number: 10112332
    Abstract: When a heating device is formed which includes at least one or more heaters 4n, 4a, 4b, 4c and 4d that are provided on the outer circumferential surfaces 2f and 3f of at least one of a heating cylinder 2 and an injection nozzle 3 to heat at least one of the heating cylinder 2 and the injection nozzle 3, at least some heaters 4a, 4b, 4c, . . . of all the heaters 4n, 4a, . . . are formed with air cooling-capable heaters 4as, 4bs and 4cs in which a panel member 5 formed of a material R having thermal conductivity is interposed between the heaters 4a, 4b, 4c, . . . and the outer circumferential surfaces 2f and 3f of at least one of the heating cylinder 2 and the injection nozzle 3, in which an air path 6 for air cooling is formed in the panel member 5 and in which an air outlet and inlet portion 8 allowing air A to be passed from an air supply portion 7 is provided in the air path 6.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: October 30, 2018
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventors: Yuichi Sakurada, Toshimi Kato, Keiichi Tozawa
  • Patent number: 10046493
    Abstract: A thin multilayer container having favorable gas barrier properties is provided using a technique applicable to the molding of the thin multilayer container, by means of ensuring the gas barrier properties at a joint of ends of a film, when the container is molded with disposing the film having the gas barrier properties in a portion to be a container trunk portion. When molding the container with disposing in advance the film having the gas barrier properties in the portion to be the container trunk portion, while a container surface resin is fed from an injection molding nozzle into a container trunk forming portion of a mold, a gas barrier resin is fed into a position corresponding the joint of the label film as an intermediate layer between a portion of the container surface resin being spread along a core mold and a portion of the container surface resin being spread along a cavity mold.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: August 14, 2018
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventors: Minoru Yamazaki, Yasuhiko Takeuchi, Hiromitsu Miyajima
  • Publication number: 20180009140
    Abstract: In composition of a heating cylinder cover that covers a heating cylinder 2 having a temperature control mechanism 3m in which at least a plurality of heating units 3a, 3b, 3c, . . . are provided on an outer circumferential surface 2ms of a heating cylinder body 2m along an axial direction Fs, the heating cylinder cover includes a heat-retaining cover part 5 that is integrally provided with a cover body part 5m and a plurality of partition parts 5a, 5bc, 5de, . . . ; the cover body part 5m is attached to the heating cylinder 2 thereby forming a predetermined covered space S between the cover body part 5m and the temperature control mechanism 3m and covers at least an upper half part 2u of the heating cylinder 2, and the partition parts 5a, 5bc, 5de, . . . project from an inner surface 5mi of this cover body part 5m toward the temperature control mechanism 3m and divides the covered space S into a plurality of closed spaces Sab, Scd, . . ..
    Type: Application
    Filed: July 7, 2017
    Publication date: January 11, 2018
    Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventors: Yuichi SAKURADA, Yoshihiko TAKAHASHI, Takahiro KOUDA
  • Patent number: 9855695
    Abstract: A display device with a touch panel and a controller having a computer function to display various kinds of screens on a display surface of the display. The controller includes a multiple screen display processing function part wherein at least two independent screen display parts are displayed side by side, a screen switch processing function part to enable switching of a touched screen to the other screen by a touch/slide operation on the screen, and a switch key display processing function part by which a key display part is arranged on the display surface in an area other than the screen display parts. A plurality of switch keys are arranged and displayed in the key display part according to a key pattern corresponding to the order of the screens switched by a touch/slide operation so as to enable selection of the screens to display by a touch operation.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: January 2, 2018
    Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventors: Hiroyuki Miyazaki, Chiharu Nishizawa, Susumu Morozumi
  • Publication number: 20170282423
    Abstract: A specific mold status Ac is caused in advance in which the interval of an inner portion Xi in the parting plane direction of a parting gap C between a fixed mold 2c and a movable mold 2m during the injection filling is larger than the interval of an outer edge portion Xo and the interval of the outer edge portion Xo is equal to or lower than a predetermined size Ls including 0. A molding injection pressure Pi is set as an injection pressure at which a non-defective product can be molded and a molding mold clamping force Pc is set as a mold clamping force by which a non-defective product can be molded. During the production, a mold 2 is clamped by a molding mold clamping force Pc and the clamped mold 2 is filled with the injected resin R by a molding injection pressure Pi. After a predetermined cooling time Tc has passed, a molded piece G is removed.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 5, 2017
    Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
    Inventor: Hirofumi MURATA
  • Patent number: 9738021
    Abstract: A horizontal mold clamping mechanism includes a rail disposed on a base, a slider fitted with the rail, and a pedestal placed on the slider and provided with a sub-slider guided by a sub-rail. A fixed platen secured to the base supports a fixed mold. A mold clamping cylinder is secured to the pedestal and laid parallel to the fixed platen. A mold opening/closing actuator connects to the pedestal for moving the mold clamping cylinder. A movable platen is secured to the sub-slider and disposed between the fixed platen and the clamping cylinder. A tie-bar passes through the movable platen and the clamping cylinder, and a first linking mechanism selectively links the clamping cylinder to the tie-bar. The movable platen has a through-hole with a diameter greater than an outer diameter of the tie-bar to provide a clearance preventing slide-contact between the tie-bar and an inner surface of the through-hole.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: August 22, 2017
    Assignee: NISSEI PLASTIC INDUSTRIAL CO. LTD.
    Inventor: Hozumi Yoda