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公开(公告)号：US11786992B2
公开(公告)日：2023-10-17
申请号：US17150583
申请日：2021-01-15
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Shota Muto , Keigo Yasuda , Koji Yamaguchi
CPC classification number: B23K26/26 , B21D35/007 , B23K10/02 , B23K26/0093 , B23K26/21
Abstract: Provided is a method of manufacturing a molded product that can reduce problems on a reinforcing plate during pressing. In one aspect of the present disclosure, the method of manufacturing a molded product includes welding a first metal plate overlaid with a second metal plate to the second metal plate; and pressing the first metal plate and the second metal plate together. In the pressing, a base surface and a wall surface are formed on the first metal plate; the wall surface is disposed to cross the base surface. In the welding, a first welding is performed on a reinforcing portion of the second metal plate that is overlaid on an area of the first metal plate that is formed into the wall surface; and subsequently, a second welding is performed in a direction crossing a direction of the first welding.
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公开(公告)号：US11590600B2
公开(公告)日：2023-02-28
申请号：US17202834
申请日：2021-03-16
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda
Abstract: Provided is a method of manufacturing a joined member that is manufactured by applying resistance welding to a workpiece. The workpiece is provided with plating layers on sides to be in contact with electrodes. In a state in which a first electrode is in contact with a first area in a first plate material that is curved along a contour of a leading end of the first electrode and in which a second electrode is in contact with a second area in a second plate material that is curved along a contour of a leading end of the second electrode, energization between the first electrode and the second electrode is started to form a nugget.
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公开(公告)号：US11305494B2
公开(公告)日：2022-04-19
申请号：US16808870
申请日：2020-03-04
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda
IPC: B29C65/48 , B29C65/00 , F16L3/127 , B29L23/00 , B29K307/04
Abstract: In a manufacturing method of an assembly, the assembly including a metal part and a pipe, the pipe including a material containing a resin, an adhesive is first adhered to an outer circumferential surface of the pipe and a metal part covering at least a portion of an outer circumferential surface of the pipe. Here, an area to which the adhesive is adhered on the outer circumferential surface of the pipe is defined as an adhesion area. Next, by a heat source provided inside the pipe, a target area is heated without interposing the metal part. The target area is located radially interior to the adhesion area and located on an inner circumferential surface of the pipe.
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公开(公告)号：US11883898B2
公开(公告)日：2024-01-30
申请号：US17475821
申请日：2021-09-15
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda
IPC: B23K11/11 , B23K11/00 , B23K35/02 , B23K103/04 , B23K101/18
CPC classification number: B23K11/115 , B23K11/0026 , B23K35/0261 , B23K2101/18 , B23K2103/04
Abstract: A method of resistance spot welding that enables an improvement of a weld strength of steel plates having different plate thicknesses while inhibiting generation of spatters is provided. One aspect of the present disclosure is the method of resistance spot welding, the method including welding a workpiece made of layered steel plates with a resistance spot welding apparatus. The resistance spot welding apparatus includes a first electrode configured to contact a first steel plate among the steel plates, and a second electrode configured to contact, among the steel plates, a second steel plate that is thinner than the first steel plate, and the second electrode being arranged such that the workpiece is interposed between the first electrode and the second electrode. The welding includes welding while moving the second electrode relative to the first electrode in a direction parallel with a plate surface of the second steel plate.
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公开(公告)号：US20220009020A1
公开(公告)日：2022-01-13
申请号：US17368042
申请日：2021-07-06
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda
Abstract: The present disclose provides a method of resistance spot welding that can inhibit Liquid Metal Embrittlement-induced cracking in zinc-coated steel plates irrespective of the plate thicknesses. One aspect of the present disclosure provides a method of resistance spot welding that includes welding a workpiece with a resistance spot welding apparatus. The workpiece includes two or more steel plates in an overlapping state. The two or more steel plates include at least one steel plate coated with zinc. The welding includes causing a cooling rate of a high-tensile steel plate among the two or more steel plates to be higher than a cooling rate of an other steel plate among the two or more steel plates. The high-tensile steel plate has a tensile strength higher than a tensile strength of the other steel plate.
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Patent Agency Ranking
公开(公告)号：US20210299778A1
公开(公告)日：2021-09-30
申请号：US17202834
申请日：2021-03-16
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda
Abstract: Provided is a method of manufacturing a joined member that is manufactured by applying resistance welding to a workpiece. The workpiece is provided with plating layers on sides to be in contact with electrodes. In a state in which a first electrode is in contact with a first area in a first plate material that is curved along a contour of a leading end of the first electrode and in which a second electrode is in contact with a second area in a second plate material that is curved along a contour of a leading end of the second electrode, energization between the first electrode and the second electrode is started to form a nugget.
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公开(公告)号：US12023752B2
公开(公告)日：2024-07-02
申请号：US17368042
申请日：2021-07-06
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda
IPC: B23K11/11 , B23K11/16 , B23K11/30 , B23K103/04
CPC classification number: B23K11/115 , B23K11/163 , B23K11/30 , B23K2103/04
Abstract: The present disclose provides a method of resistance spot welding that can inhibit Liquid Metal Embrittlement-induced cracking in zinc-coated steel plates irrespective of the plate thicknesses. One aspect of the present disclosure provides a method of resistance spot welding that includes welding a workpiece with a resistance spot welding apparatus. The workpiece includes two or more steel plates in an overlapping state. The two or more steel plates include at least one steel plate coated with zinc. The welding includes causing a cooling rate of a high-tensile steel plate among the two or more steel plates to be higher than a cooling rate of an other steel plate among the two or more steel plates. The high-tensile steel plate has a tensile strength higher than a tensile strength of the other steel plate.
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公开(公告)号：US20220226924A1
公开(公告)日：2022-07-21
申请号：US17547987
申请日：2021-12-10
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda
Abstract: One aspect of the present disclosure is a resistance spot welding apparatus for welding a workpiece made of layered metallic plates. The resistance spot welding apparatus includes a first electrode; a second electrode arranged such that the workpiece is interposed between the first electrode and the second electrode; and a pressure mechanism that applies pressure to the first electrode towards the first metallic plate by air. The pressure mechanism includes a piston coupled to the first electrode; a cylinder having an inner space that accommodates the piston; a first ventilation unit that supplies the inner space with air for applying pressure to the first electrode; and a second ventilation unit that discharges air from the inner space as pressure is applied to the first electrode. At least one of the first ventilation unit or the second ventilation unit includes two or more air passages that communicate with the inner space.
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公开(公告)号：US20220088699A1
公开(公告)日：2022-03-24
申请号：US17475821
申请日：2021-09-15
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda
Abstract: A method of resistance spot welding that enables an improvement of a weld strength of steel plates having different plate thicknesses while inhibiting generation of spatters is provided. One aspect of the present disclosure is the method of resistance spot welding, the method including welding a workpiece made of layered steel plates with a resistance spot welding apparatus. The resistance spot welding apparatus includes a first electrode configured to contact a first steel plate among the steel plates, and a second electrode configured to contact, among the steel plates, a second steel plate that is thinner than the first steel plate, and the second electrode being arranged such that the workpiece is interposed between the first electrode and the second electrode. The welding includes welding while moving the second electrode relative to the first electrode in a direction parallel with a plate surface of the second steel plate.
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公开(公告)号：US20200316872A1
公开(公告)日：2020-10-08
申请号：US16808870
申请日：2020-03-04
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda
Abstract: In a manufacturing method of an assembly, the assembly including a metal part and a pipe, the pipe including a material containing a resin, an adhesive is first adhered to an outer circumferential surface of the pipe and a metal part covering at least a portion of an outer circumferential surface of the pipe. Here, an area to which the adhesive is adhered on the outer circumferential surface of the pipe is defined as an adhesion area. Next, by a heat source provided inside the pipe, a target area is heated without interposing the metal part. The target area is located radially interior to the adhesion area and located on an inner circumferential surface of the pipe.
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