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1. 发明公开

EP4371744A1 MOLDING METHOD AND DIE 审中-实审
公开(公告)号：EP4371744A1
公开(公告)日：2024-05-22
申请号：EP21950221.8
申请日：2021-07-16
申请人： Kokoku Intech Co., Ltd.
发明人： NISHIMURO Makiya , HIRAYAMA Kouji
IPC分类号： B29C69/02 , B29C45/17 , F16J15/10
CPC分类号： Y02E60/50 , F16J15/10 , B29C45/17 , B29C69/02
摘要： There are provided a molding method and a mold capable of further reducing the distance between an inclined portion of a base material and a seal member when the seal member is molded onto the base material including the inclined portion. A molding method includes: a preforming step of injecting a rubber material 150 into a groove 562 at a temperature where the rubber material 150 is not vulcanized, in a cavity plate 510 including the groove 562 into which the rubber material 150 is injected; and a vulcanization molding step of sandwiching a base material 300 between the cavity plate 510 in which the rubber material 150 is injected into the groove 562 and a mold 520, and molding the rubber material 150 onto the base material 300 as a seal member 172 at a temperature where the rubber material 150 is vulcanized. The cavity plate 510 includes a gap forming portion 564 that creates a gap Sp between the gap forming portion 564 and an inclined portion 304 of the base material 300 when a flat surface 302 and a flat surface 306 of the base material 300 are pressed in the vulcanization molding step, and a connecting groove connecting the groove 562 and the gap forming portion 564. The groove 562 of the cavity plate 510 is provided in the vicinity of the gap forming portion 564.

2. 发明公开

EP4371745A1 MOLDING METHOD 审中-实审
公开(公告)号：EP4371745A1
公开(公告)日：2024-05-22
申请号：EP21950222.6
申请日：2021-07-16
申请人： Kokoku Intech Co., Ltd.
发明人： MORI Keisuke , HIRAYAMA Kouji
IPC分类号： B29C69/02 , F16J15/10
CPC分类号： Y02E60/50 , F16J15/10 , B29C69/02
摘要： There is provided a molding method capable of reducing damage or deformation of a base material when a seal member is molded in a direction intersecting an uneven portion of the base material. A molding method includes: a preforming step of injecting a rubber material into a groove 462 at a temperature where the rubber material is not crosslinked, in a cavity plate 410 including the groove 462 into which the rubber material is injected; and a vulcanization molding step of sandwiching a base material 300 between the cavity plate 410 in which the rubber material is injected into the groove 462 and a mold 420, and molding the rubber material onto the base material 300 as a seal member 172 at a temperature where the rubber material is crosslinked. At least a surface 422 of the mold 420 facing a recess 334 and a protrusion 332 of the base material 300 is a flat surface when viewed in a cross-section at a position separated by a predetermined distance from a molding position of the seal member 172 in an X direction substantially orthogonal to a Y direction in which the seal member 172 extends.

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