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1.发明公开公开(公告)号：US20240149506A1
公开(公告)日：2024-05-09
申请号：US18279859
申请日：2021-11-01
发明人： Kiyotaka NAKAYAMA , Akihiro NAITO , Takashi UEMURA , Keigo SUSA , Koji MATSUZAKI , Shoso NISHIDA
CPC分类号： B29C45/006 , B29C65/18 , B29C65/7841 , B29C2045/0063 , B29C2045/0074
摘要： A performance in a technique using a heater for manufacturing a resin molding product is further improved. A method of manufacturing a resin molding product includes: a step of placing a first portion configuring a resin molding product, in a first mold; a step of placing a second portion configuring a resin molding product, in a second mold; a step of inserting a heater between the first mold and the second mold; a step of partially heating the first portion and the second portion by the heater; a step of evacuating the heater; a step of welding the first portion and the second portion; and a step of extracting the resin molding product including the first portion and the second portion.
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公开(公告)号：US20240017452A1
公开(公告)日：2024-01-18
申请号：US18038912
申请日：2021-11-17
发明人： Akihiro NAITO , Takuya YUFU
CPC分类号： B29C44/424 , B29C44/3415 , B29C44/60 , B29C33/20 , B29C45/66 , B29C45/74 , B29C45/76 , B29C44/422 , B29C2045/1784
摘要： An injection device (2) of an injection molding machine (1) includes a heating cylinder (18) having a gas introduction port (30) and a screw (19), and a gas supply device (5) is connected to the gas introduction port (30). The gas supply device (5) includes a gas supply source (33) and a gas pressure regulating unit (34). The gas pressure regulating unit (34) regulates a gas pressure and supplies the gas when a gas from the gas supply source (33) is introduced into the gas introduction port (30). Specifically, the gas pressure is caused to change in a molding cycle and is increased to a high pressure in a metering process (61). That is, a pressure increasing period (71) in which the gas pressure increases at least partially overlaps with the metering process (61).
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公开(公告)号：US20230278270A1
公开(公告)日：2023-09-07
申请号：US18171138
申请日：2023-02-17
发明人： Akihiro NAITO , Takuya Yufu
CPC分类号： B29C45/50 , B29C45/77 , B29C45/74 , B29C45/1704 , B29C45/1732 , B29C2945/76006 , B29C2945/76193 , B29C2945/76839
摘要： An injection molding machine for foam molding includes a heating cylinder having a gas injection port, a screw which is drivable in the heating cylinder, a gas supply device configured to supply a gas to the gas injection port, the gas supply device including a valve mechanism in a gas flow path, and a control device. The control device is configured to control the valve mechanism to close the valve mechanism at least once in a molding cycle, and keep the valve mechanism open at least in a measuring step.
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4.发明公开公开(公告)号：US20240042664A1
公开(公告)日：2024-02-08
申请号：US18265356
申请日：2021-11-17
发明人： Akihiro NAITO , Takuya YUFU
CPC分类号： B29C45/77 , B29C45/74 , B29C45/7613 , B29C45/28 , B29C2945/76498 , B29C2945/76006 , B29C2945/7618
摘要： An injection molding machine includes a heating cylinder having a gas inlet, a screw, a gas cylinder, a pressure reducing valve configured to reduce a primary pressure of a gas from the gas cylinder to a secondary pressure, a gas supply portion configured to supply the gas at the secondary pressure to the gas inlet, an injection material pressure detection device configured to detect an injection material pressure in a vicinity of the gas inlet, and a controller. The controller is configured to detect an abnormality by comparing the injection material pressure with the secondary pressure.
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公开(公告)号：US20220297361A1
公开(公告)日：2022-09-22
申请号：US17697040
申请日：2022-03-17
发明人： Akihiro NAITO , Takashi Uemura , Ryuki Sakamoto , Shoso Nishida
摘要： A melting heater configured to melt joining end surfaces of a pair of semi-molded products in a case where the joining end surfaces are melted and joined to manufacture a molded product, the melting heater including: two glass plates arranged in parallel to each other; and a plurality of element heaters arranged in a unit having a flat plate shape as a whole between the two glass plates, in which the glass plate is subjected to surface processing for controlling infrared rays emitted from the plurality of element heaters.
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6.发明公开公开(公告)号：US20240051208A1
公开(公告)日：2024-02-15
申请号：US18266549
申请日：2021-11-17
发明人： Akihiro NAITO , Takuya YUFU
CPC分类号： B29C45/77 , B29C45/03 , B29C45/18 , B29C45/74 , B29C45/7613 , B29C45/768 , B29C2945/76006 , B29C2945/76498 , B29C2945/7619 , B29C2945/76361 , B29C2945/76668 , B29C2945/76839 , B29C2945/76933 , B29C2945/76545
摘要： An injection molding machine includes a heating cylinder provided with a gas inlet, a screw, a gas cylinder, a pressure reducing valve configured to reduce a primary pressure of a gas from the gas cylinder to a secondary pressure, a gas supply portion configured to supply the gas at the secondary pressure to the gas inlet, a secondary pressure detection device configured to detect the secondary pressure, and a controller. The controller is configured to detect an abnormality by comparing a set pressure set in advance in the injection molding machine with the secondary pressure.
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公开(公告)号：US20230382033A1
公开(公告)日：2023-11-30
申请号：US18322103
申请日：2023-05-23
发明人： Takuya YUFU , Akihiro NAITO , Yasutaka OTSUJI
CPC分类号： B29C45/74 , B29C45/80 , B29C35/0805 , B29C2045/2748
摘要： A heating cylinder heater includes a plurality of infrared heaters disposed around a heating cylinder in a non-contact manner with respect to the heating cylinder, a heat insulating material provided outside the infrared heaters, and a cover configured to cover the heat insulating material. The cover has two or more opening portions, and a part or all of the two or more opening portions are each provided with an opening-closing device that is configured to open and close the corresponding opening portion.
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公开(公告)号：US20220402177A1
公开(公告)日：2022-12-22
申请号：US17751000
申请日：2022-05-23
发明人： Akihiro NAITO , Takuya YUFU
摘要： An injection molding machine for foam molding includes: a heating cylinder; a screw disposed in the heating cylinder; and a plurality of inlet portions provided in the heating cylinder and configured to introduce inert gas. An inside of the heating cylinder includes a starvation section on an upstream side in which a pressure of the resin is decreased, and the inert gas from the plurality of inlet portions being to be supplied in the starvation section. Each of the plurality of inlet portions is provided with a check valve or an opening and closing mechanism. A product P×N of an interval P of the plurality of inlet portions and a number N of the inlet portions is 0.5H or more and 1.71H or less with respect to a length H of the starvation section.
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公开(公告)号：US20210178648A1
公开(公告)日：2021-06-17
申请号：US17270135
申请日：2019-08-23
摘要： The present disclosure relates to a screw of an injection molding machine in which a heating cylinder is formed with a first compression section, a starvation section, and a second compression section, and in which an inert gas is to be introduced into the starvation section. At a portion of the screw corresponding to the first compression section, a barrier flight as a double flight including a combination of a main flight and a sub-flight having a lead angle larger than that of the main flight is formed, and a dam flight having a predetermined-width ring shape is formed, downstream of, i.e., in front of the barrier flight. A seal structure to prevent backflow of the resin may be provided between the dam flight and the starvation section.
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