Device and method for manufacturing metal-resin composite

A method for manufacturing a metal-resin composite in which a resin material is integrated with an extruded material made from metal by press molding, the method comprising:

• preparing a mold including a first mold forming a housing portion that accommodates at least a part of the extruded material and a second mold movable, in an opening and closing direction, with respect to the first mold;
• accommodating the extruded material in the housing portion and disposing the resin material on the first mold;
• and
• moving the second mold in a mold closing direction to form a cavity defined by an exterior surface of the extruded material and the mold, and filling the cavity with the resin material by pressurizing the resin material, wherein
• the extruded material comprises at least one protrusion protruding from the exterior surface and approaching the housing portion in an accommodation state where the extruded material is accommodated in the housing portion,
• in the filling, the at least one protrusion is brought into close contact with the housing portion or a peripheral edge portion thereof by molding pressure applied from the mold to the extruded material, and the cavity is disconnected from a gap between an inner surface of the housing portion and the exterior surface of the extruded material,
• in the filling, the molding pressure is applied to the extruded material via the resin material,
• the extruded material includes a first flange and a second flange extending along the inner surface of the housing portion in the accommodation state,
• the at least one protrusion includes a first protrusion provided on the first flange and a second protrusion provided on the second flange,
• the first flange and the second flange form an inner space between inner surfaces thereof, and the inner space constitutes a part of the cavity, and
• in the filling, the molding pressure is applied to the first flange and the second flange via the resin material that has flowed into the inner space, the first flange and the second flange are deformed toward the inner surface of the housing portion, and the first protrusion and the second protrusion are brought into close contact with the housing portion or the peripheral edge portion thereof.