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公开(公告)号：EP4119275A1
公开(公告)日：2023-01-18
申请号：EP21788524.3
申请日：2021-04-12
发明人： MAEDA, Kyohei , SUZUKI, Reiichi , IHARA, Ryohei
IPC分类号： B23K11/11
摘要： Provided is a method for producing a resistance-welded member that makes it possible to suppress an internal crack of a nugget and an internal crack of a corona bond during spot welding of a set of three or more sheets including a plated steel sheet. The method comprises: a main energization step of energizing with a first current value (I1) while compressing the steel sheet with a first compressive force (P1) to form a nugget; a subsequent energization step of, after the main energization step, energizing with a second current value (12) smaller than the first current value (I1) while compressing with a second compressive force (P2) greater than the first compressive force (PI); and an electrode holding step of holding an electrode while maintaining the second compressive force (P2) after the subsequent energization. The second compressive force (P2) and a total sheet thickness (t), the first current value (I1) and the second current value (12), and a subsequent energization time (Tw2) and an electrode holding time (Tht) satisfy predetermined conditions respectively.
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公开(公告)号：EP4101615A1
公开(公告)日：2022-12-14
申请号：EP22171848.9
申请日：2022-05-05
IPC分类号： B29C33/00 , B29C43/18 , B29C43/38 , B29C70/68 , B21D22/20 , B21D37/08 , B29C70/88 , B21D47/04 , B29C70/78 , B21D22/22 , B29K105/06 , B29K105/12 , B29K105/20 , B29K705/00 , B21D22/02 , B21D22/10 , B21D22/21
摘要： The apparatus 50 includes an upper mold 110 and a lower mold 120 that sandwich the metal member 10 and the resin material 20, and a drive unit 130 that vertically moves an elastic member 114 attached to a molding surface of the upper mold 110 and at least one of the upper mold 110 and the lower mold 120. A cavity C for arranging the resin material 20 is provided by the upper mold 110 and the lower mold 120. The elastic member 114 is arranged so as to seal the resin material 20 in the cavity C.
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公开(公告)号：EP4101616A1
公开(公告)日：2022-12-14
申请号：EP22174853.6
申请日：2022-05-23
IPC分类号： B29C33/00 , B29C43/18 , B29C43/38 , B21D22/20 , B21D37/08 , B29C70/68 , B29C70/78 , B29C70/88 , B21D43/00 , B29C33/14 , B29C43/36 , B21D47/04 , B21D22/02 , B21D22/21 , B21D22/10 , B21D22/22 , B29K105/06 , B29K105/12 , B29K105/20 , B29K705/00
摘要： A mold 100 for producing a metal-resin composite by press-forming a metal member 10 and integrally molding the metal member 10 that is press-formed and a resin material includes an upper mold 110 and a lower mold 120 that sandwich the metal member 10 and the resin material. The upper mold 110 includes a first press surface 111a for press-forming the metal member 10 and a second press surface 111b for integrally molding the metal member 10 and the resin material. A distance d11 between the first press surface 111a and the lower mold 120 is shorter than a distance d12 between the second press surface 111b and the lower mold 120.
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公开(公告)号：EP4005721A1
公开(公告)日：2022-06-01
申请号：EP20866435.9
申请日：2020-08-20
发明人： HASHIMURA, Toru , IHARA, Ryohei , YAMAKAWA, Taiki
摘要： A joining method for overlapping and joining a plate-shaped portion of a first metal member 2 and a plate-shaped portion of a second metal member 3, where the first metal member 2 and the second metal member 3 are made of dissimilar materials, includes a first step of forming an insertion hole in each of the plate-shaped portion of the first metal member 2 and the plate-shaped portion of the second metal member 3, where the insertion holes communicate with each other when the plate-shaped portions of the first metal member 2 and the second metal member 3 are overlapped with each other, a second step of disposing a first joining member 4 made of a metal material on a side of the plate-shaped portion of the first metal member 2 opposite to the second metal member 3, a third step of inserting a second joining member 5 made of the same metal material as that of the first joining member 4 into the first metal member 2 from a side of the second metal member 3 through the insertion holes while the plate-shaped portions of the first metal member 2 and the second metal member 3 are overlapped with each other, and a fourth step of welding the first joining member 4 and the second joining member 5 and joining the first metal member 2 and the second metal member 3 through the first joining member 4 and the second joining member 5.
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公开(公告)号：EP4163081A1
公开(公告)日：2023-04-12
申请号：EP22199850.3
申请日：2022-10-05
IPC分类号： B29C45/14 , B21D22/20 , B21D22/21 , B21D22/22 , B21D47/04 , B29C70/78 , B29C43/02 , B29C70/46
摘要： Molding accuracy of a metal member is improved in an apparatus, a mold set, and a method for producing a metal-resin composite with a set of molds. An apparatus 50 for manufacturing a metal-resin composite 1 by press molding a metal member 10 and a resin material 20, the apparatus 50 including a mold 100 including an upper mold 110 and a lower mold 120 sandwiching the metal member 10 and the resin material 20, a molding auxiliary component 90 detachably fixed to the upper mold 110 so as to fill at least a part of a cavity C for arranging the resin material 20 formed by the upper mold 110 and the lower mold 120, and a drive unit 130 that moves at least one of the upper mold 110 and the lower mold 120 in a vertical direction. The molding auxiliary component 90 has a first press surface 97 for molding the metal member 10. The upper mold 110 has a second press surface 117 for integrally molding the metal member 10 and the resin material 20. A distance between the first press surface 97 and the lower mold 120 in a state where the molding auxiliary component 90 is attached is shorter than a distance between the second press surface 117 and the lower mold 120 in a state where the molding auxiliary component 90 is removed.
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公开(公告)号：EP4119276A1
公开(公告)日：2023-01-18
申请号：EP21788955.9
申请日：2021-03-10
发明人： MAEDA, Kyohei , SUZUKI, Reiichi , IHARA, Ryohei
摘要： Provided is a method for producing a resistance-welded member that makes it possible to suppress an internal crack of a nugget and an internal crack of a corona bond during spot welding of a set of three or more sheets including a plated steel sheet. The method comprises: a main energization step for performing energization with a first current value (I1) while compressing the steel sheets with a first compressive force (P1) to form a nugget; a subsequent energization step for performing, after the main energization step, energization such that the current value gradually decreases from the first current value (I1) while compressing with a second compressive force (P2) greater than the first compressive force (PI); and an electrode holding step for holding the electrodes while maintaining the second compressive force (P2) after the subsequent energization. The second compressive force (P2) and a total sheet thickness (t), compression rise delay time (Tdl), and a downslope time (Tds) and an electrode holding time (Tht) satisfy respective predetermined conditions.
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公开(公告)号：EP4101617A1
公开(公告)日：2022-12-14
申请号：EP22174857.7
申请日：2022-05-23
IPC分类号： B29C33/00 , B29C43/18 , B29C43/38 , B21D22/20 , B21D37/08 , B29C70/68 , B29C70/78 , B29C70/88 , B21D47/04 , B29C43/40 , B21D22/02 , B21D22/10 , B21D22/21 , B21D22/22 , B29K105/06 , B29K105/12 , B29K105/20 , B29K705/00
摘要： A mold (100) is for press molding a metal plate (10) and a resin material (20) to produce a metal-resin composite (1). The mold (100) includes an upper mold (110) and a lower mold (120) that sandwich the metal plate (10) and the resin material (20). A cavity (C) for arranging the resin material (20) is provided by the upper mold (110) and the lower mold (120). The upper mold (110) has a recess into which the resin material (20) leaking from the cavity (C) is caused to flow.
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