APPARATUS FOR PRESSING POWDER MATERIALS Russian patent published in 2005 - IPC

FIELD: powder metallurgy, namely apparatuses for pressing powders.

SUBSTANCE: apparatus includes movable and stationary plates, upper and lower punches, pressing block in which die is arranged. Pressing block has two part; upper of said two parts is secured to movable plate and lower part is secured to stationary plate. In one part of block there is additional drive unit for moving punch in plane normal relative to motion direction of movable plate. Pressing block is provided with two carriages placed in guides with possibility of motion in two mutually normal directions. One carriage is arranged in guides of second carriage. Each part of pressing block has four profiled supports. Die is in the form of four shaping members with flat working surfaces. Said members are mounted on profiled supports in such a way that their working surfaces form closed loop. Each member has slit guide normal relative to its working surface and stem mounted in slit guide of adjacent member. Working surface of shaping member coincides with one surface of its stem.

EFFECT: increased density of pressed blanks, enhanced uniformness of density distribution in volume of blank.

2 cl, 4 dwg