Die molding apparatus

A die molding apparatus for thermoplastic forming of an amorphous alloy, comprising:

• a forming structure, comprising:
• a forming furnace body with a heating cavity;
• a material waiting housing with a transition cavity, a feeding pipe provided with two ends respectively in communication with the heating cavity and the transition cavity, and a vacuum control valve arranged on the feeding pipe;
• a material loading structure, comprising:
• a material loading arm and a material loading driving mechanism;
• wherein the material waiting housing is provided with a material loading hole being in communication with the transition cavity, one end of the material loading arm is located in the transition cavity and configured for carrying the amorphous alloy, the other end of the material loading arm is configured to penetrate through the material loading hole sealingly and slidably, and the material loading driving mechanism is connected with the other end of the material loading arm;
• and
• a vacuum pumping structure, configured for pumping out gas in the heating cavity and the transition cavity, such that vacuum degrees of the heating cavity and the transition cavity reach a predetermined value;
• wherein the vacuum control valve has a turn-on state and a turn-off state, and when the vacuum control valve is in the turn-on state, the feeding pipe communicates the heating cavity and the transition cavity, the material loading driving mechanism drives the material loading arm to slide, such that the material loading arm carries the amorphous alloy to the heating cavity or carries the amorphous alloy back to the transition cavity through the feeding pipe;
• and after the amorphous alloy is thermoplastic formed in the heating cavity, and is then conveyed to the transition cavity for cooling;
• the vacuum control valve is in the turn-off state, to seal and isolate the heating cavity from the transition cavity;
• wherein a material waiting area is arranged in the transition cavity, an amorphous alloy to be thermoplastic formed is placed in the material waiting area in advance, and the vacuum degree of the transition cavity is pumped to the predetermined value;
• the material waiting area is further configured to receive a previous amorphous alloy being thermoplastic formed and conveyed from the heating cavity, and the amorphous alloy to be thermoplastic formed is then conveyed to the heating cavity to continue the thermoplastic forming of the amorphous alloy;
• and
• wherein die molding apparatus further comprises:
• a mold mechanism, comprising:
• an upper pressure head arranged in the heating cavity, a lower pressure head located below the upper pressure head and arranged slidably relative to the upper pressure head, a forming driving mechanism connected with the forming furnace body and configured for driving the lower pressure head to move up and down relative to the upper pressure head, and a forming mold detachably arranged on the lower pressure head;
• the forming mold is provided with a forming cavity configured for accommodating the amorphous alloy, and the lower pressure head moves toward the upper pressure head to press against the forming mold to plastically form the amorphous alloy.