Patent ID: 7165437
Filing Date: 2007-01-23
Classification: B21D,B30B

Abstract:
1. A mechanical press apparatus provided with a drive portion which moves upward and downward an outer slide and an inner slide arranged in an inner side of the outer slide at a predetermined timing, characterized in that the mechanical press apparatus comprises: an elevating plate fixed to a lower end surface of said outer slide so as to oppose to a lower surface of said inner slide; an upper die (an upper mold) fixed to a lower surface of said elevating plate; a lower die (a lower mold) positioned at a lower surface of an upward and downward movement of said upper die so as to press; a first hydraulic cylinder provided in an upper surface portion of said elevating plate and contracted by a pressing force at a time when said inner slide moves downward; and a second hydraulic cylinder interposed between said outer slide and said drive portion and expanded working with a pressure of a pressurized fluid supplied from said first hydraulic cylinder at a time when said first hydraulic cylinder is contracted by the pressing force of said inner slide, thereby pressing said outer slide to a lower side.