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公开(公告)号：US20200055223A1
公开(公告)日：2020-02-20
申请号：US16662954
申请日：2019-10-24
Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
Inventor： Hirofumi MURATA
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.
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公开(公告)号：US20130142899A1
公开(公告)日：2013-06-06
申请号：US13690171
申请日：2012-11-30
Applicant: Nissei Plastic Industrial Co., Ltd.
Inventor： Hirofumi MURATA
IPC: B29C45/76
CPC classification number: B29C45/7653 , B29C45/766 , B29C2045/7606
Abstract: An injection molding machine includes a molding machine controller having a computer function to perform molding by controlling a mold clamping device that clamps a mold and an injection device that injects and charges resin, plasticized and molten by rotation of a screw inside a heating cylinder, into the mold by advancement of the screw. The molding machine controller includes a mode selecting function that selects either of two modes of an injection side setting priority mode for injecting and charging the resin by giving priority to a molding condition set on the injection device side and a mold clamping side setting priority mode for injecting and charging the resin by giving priority to a molding condition set on the mold clamping device side. A setting screen display function for displaying an injection side priority setting screen and displaying a mold clamping side priority setting screen is provided.
Abstract translation: 注射成型机包括具有计算机功能的成型机控制器，该成型机控制器通过控制夹持模具的模具夹紧装置和注射和加载树脂的注射装置进行成型，所述注射装置通过加热缸内的螺杆的旋转而被塑化和熔化成型， 模具通过推进螺丝。 成型机控制器包括模式选择功能，其通过优先考虑在注射装置侧设定的成型条件和选择模具夹紧侧设定优先模式来选择注射侧设定优先模式的两种模式中的任一种，以注射和充注树脂 通过优先设置在合模装置侧的成型条件来注入和充入树脂。 提供了用于显示注入侧优先级设置屏幕和显示合模侧优先级设置屏幕的设置屏幕显示功能。
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公开(公告)号：US20240059002A1
公开(公告)日：2024-02-22
申请号：US18234689
申请日：2023-08-16
Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
Inventor： Hirofumi MURATA , Kenichi HAYASHI
CPC classification number: B29C45/7653 , B29C45/67 , B29C2945/76505 , B29C2945/76709
Abstract: A predetermined mold gap is provided beforehand between a movable mold and a stationary mold of a mold by a mold clamping device. A mold clamping pressure is set to zero, and a predetermined back pressure is set for the movable mold. Subsequently, the injection device is caused to start injection of the molten resin into the mold for which the mold gap, the mold clamping pressure, and the back pressure have been set. When a predetermined injection end condition set beforehand is satisfied as a result of progress of an injection filling process, a filling end process of ending the injection filling process is performed.
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公开(公告)号：US20230364841A1
公开(公告)日：2023-11-16
申请号：US18026078
申请日：2021-09-14
Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
Inventor： Toshimi KATO , Hirofumi MURATA , Hozumi YODA
IPC: B29C45/52
CPC classification number: B29C45/52
Abstract: A partial reflux injection function part 5 is provided according to which resin R at the front side of a screw head portion 4s is injected into the metal mold 2 to fill the metal mold 2 with the resin R in synchronization with the refluxing of a predetermined amount of the reflux resin Rm to be used as a part of the resin R to the screw body part 4m side at the rear side of the screw head portion 4s through the inner side of the screw head portion 4s and/or the outer periphery side of the screw head portion 4s. A control function is provided that sequentially performs a plasticization step Wi1 to rotate the screw 4 in the heating cylinder 3 to thereby subject the resin in the heating cylinder 3 to a plasticization processing; an injection step Wi2 to allow, after the completion of the plasticization step Wi1, the screw 4 to move forward to thereby inject, into the metal mold 2, a part of the plasticized resin R accumulated at the front side of the screw head portion 4s of the screw 4 to fill the metal mold 2 with the resin; and a plasticization promotion step Wi3 to allow, after the completion of the injection step Wi2, a part of the remaining part of the accumulated plasticized resin R to be refluxed as the reflux resin Rm to the rear side of the screw head portion 4s.
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公开(公告)号：US20170282423A1
公开(公告)日：2017-10-05
申请号：US15474643
申请日：2017-03-30
Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
Inventor： Hirofumi MURATA
CPC classification number: B29C45/7653 , B29C45/766 , B29C45/77 , B29C45/80 , B29C2945/76096 , B29C2945/76498 , B29C2945/76505 , B29C2945/76732 , B29C2945/76859 , B29C2945/76869 , B29C2945/76913 , B29C2945/76943
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.
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Patent Agency Ranking
公开(公告)号：US20220203592A1
公开(公告)日：2022-06-30
申请号：US17438206
申请日：2019-12-09
Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
Inventor： Hozumi YODA , Nobukazu KASUGA , Hirofumi MURATA
Abstract: A molding injection pressure and a molding clamping force are determined in advance to obtain a parting opening amount, which is a predetermined gap, between a movable mold and a fixed mold of a mold during injection filling. The molding injection pressure and the molding clamping force are determined to obtain a molding injection pressure capable of molding a good product and a mold clamping force capable of molding a good product, respectively, thereby setting a specific molding condition, setting a fast injection speed from the start of injection, which is higher than the injection speed set by the specific molding condition, and setting a fast injection section for continuing the fast injection speed as a fast injection condition, mold-clamping the mold by the molding clamping force during molding, and setting the molding injection pressure to a limit pressure, injecting and filling resin into a mold by the fast injection condition from the start of injection, and injecting and filling resin by the specific molding condition when the fast injection section ends.
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公开(公告)号：US20210308921A1
公开(公告)日：2021-10-07
申请号：US17266767
申请日：2019-03-28
Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
Inventor： Yuichi SAKURADA , Nanae NAITO , Keita ARAI , Hozumi YODA , Hirofumi MURATA
Abstract: An injection device includes a heating cylinder (27), a screw (29) placed in the heating cylinder (27) so as to be rotatable and movable in an axial direction, an injection stage (50) supporting the heating cylinder (27), and a material introducing member (40) unit that supplies a resin material to the heating cylinder (27). The material introducing member (40) includes a first heat medium passage through which a heat medium having undergone a temperature control passes, and is fitted in a vertical hole (57) formed in the injection stage (50) from an upper side. The material introducing member (40) includes a cylindrical portion (42) that extends along the vertical hole (57). A heat insulating air layer (68) with a predetermined thickness is ensured between an outer circumference of the cylindrical portion (42) and a surface of the vertical hole (57). A lower part of the cylindrical portion (42) is in contact with the heating cylinder (27).
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公开(公告)号：US20240239030A1
公开(公告)日：2024-07-18
申请号：US18434366
申请日：2024-02-06
Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
Inventor： Hozumi YODA , Nobukazu KASUGA , Hirofumi MURATA
CPC classification number: B29C45/77 , B29C45/04 , B29C45/67 , B29C45/7653 , B29C45/766 , B29C45/768 , B29C2945/76083 , B29C2945/76096 , B29C2945/76254 , B29C2945/76498 , B29C2945/76505 , B29C2945/76595 , B29C2945/76709 , B29C2945/76732
Abstract: An injection molding machine including a mold clamping device for clamping a mold comprising a fixed mold and a movable mold by a predetermined mold clamping force; an injection device for injecting and filling a resin into the mold by a predetermined injection pressure, wherein the mold clamping device enables natural compression of the resin at least as the resin inside the mold solidifies; and a molding machine controller at least including a specific molding condition setting function for setting a specific molding condition by obtaining a parting opening amount which becomes a predetermined gap between the movable mold and the fixed mold during injection filling, a molding injection pressure which becomes an injection pressure capable of molding a good product and a molding clamping force which becomes a mold clamping force capable of molding a good product; a fast injection condition setting function for setting, as a fast injection condition, a fast injection speed from the start of injection, the fast injection speed being higher than the injection speed set by the specific molding condition, and a fast injection section for continuing the fast injection speed; and a molding control function for mold-clamping the mold clamping device by the molding clamping force, setting the molding injection pressure to a limit pressure, injecting and filling the mold by the fast injection condition from the start of injection, and filling the mold by the specific molding condition by the end of the fast injection section.
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公开(公告)号：US20210078229A1
公开(公告)日：2021-03-18
申请号：US16924120
申请日：2020-07-08
Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
Inventor： Atsushi MURATA , Tomonori KARASAWA , Hirofumi MURATA , Hozumi YODA
IPC: B29C45/68
Abstract: A mold clamping device (20) includes a traction platen (29) disposed below a pressure-receiving platen (22), a movable platen (28) disposed above the pressure-receiving platen (22) and configured to be moved up and down by a mold opening and closing mechanism (27), and tie bars (31) extending downward from the movable platen (28) and penetrating the pressure-receiving platen (22) and the traction platen (29). The mold clamping device (20) is configured to clamp molds (12) disposed between the pressure-receiving platen (22) and the movable platen (28). A saw tooth portion (36) is formed at a lower end of each of the tie bars (31), and a half nut (26) that engages with the saw tooth portion (36) is provided under the traction platen (29).
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公开(公告)号：US20150202815A1
公开(公告)日：2015-07-23
申请号：US14597455
申请日：2015-01-15
Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.
Inventor： Hirofumi MURATA
CPC classification number: B29C45/76 , B29C2945/76096 , B29C2945/76267 , B29C2945/76381 , B29C2945/76384 , B29C2945/76391 , B29C2945/76414 , B29C2945/76461 , B29C2945/76505 , B29C2945/76869 , B29C2945/76936
Abstract: A molding injection pressure Pi with which a parting opening Lm is formed between a movable mold 2m and a fixed mold 2c during injection-filling and which allows formation of a good molded article is obtained and set in advance. A molding clamping force Pc that allows formation of a good molded article is obtained and set in advance. During production, a mold clamping device Mc is clamped with the molding clamping force Pc, and an injection device Mi to apply the molding injection pressure Pi as a limit pressure Ps is driven to injection-fill a mold 2 with resin R. A parting opening detector 3 that detects the parting opening Lm is provided. During production, reset control is executed to reset the parting opening detector 3 to zero if reset timing tr set in advance has come at least on condition that given preparation for injection is completed after clamping. The reset timing is set in a range covering a given period Zs before injection start time and the given period Zs after the injection start time.
Abstract translation: 在注射填充期间，可以预先设定在注射填充期间在可动模具2m和固定模具2c之间形成分型开口Lm并且允许形成良好的模制品的成型注射压力Pi。 获得并设定成型良好的成形品的成形夹持力Pc。 在生产过程中，用模制夹紧力Pc夹紧模具夹紧装置Mc，并且将注射装置Mi施加到模制注射压力Pi作为极限压力Ps被驱动以用树脂R向模具2注射。分型开口 提供检测分离开口Lm的检测器3。 在生产过程中，如果在预先设定的复位定时tr至少在给定准备准备完成后进行夹紧，则执行复位控制以使分模开启检测器3复位为零。 复位定时被设定在覆盖喷射开始时间之前的给定周期Zs和喷射开始时间之后的给定周期Zs的范围内。
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