| 摘要 |
The invention provides a mechanical press apparatus for both single and double uses which can press mold a large-sized blank at a high pressure by employing a single action use aspect while being of a double action type. In a mechanical press apparatus provided with a drive portion ( 14 ) which moves upward and downward an outer slide ( 8 ) and an inner slide ( 9 ) arranged in an inner side of the outer slide at a predetermined timing, an elevating plate ( 10 ) is fixed to a lower end surface of the outer slide ( 8 ) so as to oppose to a lower surface of the inner slide ( 9 ), and the lower surface is provided with an upper die ( 7 ) and a lower die ( 3 ) positioned at a lower surface thereof so as to press. Further, an upper surface portion of the elevating plate ( 10 ) is provided with a first hydraulic cylinder ( 11 ) contracted by a pressing force at a time when the inner slide ( 9 ) moves downward. Further, a second hydraulic cylinder ( 12 ) is provided between the outer slide ( 8 ) and the drive portion ( 14 ) so as to be expanded working with a pressure of a pressurized fluid supplied from the first hydraulic cylinder ( 11 ) at a time when the first hydraulic cylinder ( 11 ) is contracted by the pressing force of the inner slide ( 9 ), thereby pressing the outer slide ( 8 ) to a lower side.
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