Forming device and preparation method of graphite crucible

A forming device of a graphite crucible, comprising:

• a support frame, comprising a base and upright columns;
• a male die, disposed on the support frame and far away from the base;
• wherein the male die is movable reciprocally in a vertical direction relative to the support frame;
• a crucible mouth pressing member, disposed on the support frame and correspondingly disposed on a side of the male die close to the base;
• wherein the crucible mouth pressing member is movable reciprocally in the vertical direction relative to the support frame, and the crucible mouth pressing member defines an opening part allowing the male die to pass therethrough;
• a female die, disposed on the base and corresponding to the male die;
• wherein the female die is configured to accommodate crucible paste, and the male die, the crucible mouth pressing member and the female die are configured to cooperatively form the crucible paste into the graphite crucible;
• a first driving assembly, comprising a first hydraulic cylinder and a first sliding beam;
• wherein the first hydraulic cylinder is disposed on the support frame and connected to the first sliding beam;
• and the first sliding beam is slidably connected to the upright columns, the male die is fixedly connected to a side of the first sliding beam close to the base, and the first hydraulic cylinder is configured to drive the first sliding beam to move reciprocally in the vertical direction;
• and
• a second driving assembly, comprising a second hydraulic cylinder and a second sliding beam;
• wherein the second hydraulic cylinder is disposed on the support frame and connected to the second sliding beam;
• the second sliding beam is disposed on the side of the first sliding beam close to the base and slidably connected to the upright columns;
• and the crucible mouth pressing member is fixedly connected to a side of the second sliding beam close to the base, and the second hydraulic cylinder is configured to drive the second sliding beam to move reciprocally in the vertical direction.