Die molding apparatus

Patent metadata

Field	Value
Publication number	US-12296381-B2
Application number	US-202118022211-A
Country	US
Kind code	B2
Filing date	Aug 23, 2021
Priority date	Aug 28, 2020
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

The present application relates to the technical field of amorphous alloy molding apparatuses, and more particularly to a die molding apparatus. The die molding apparatus includes: a forming structure, a material loading structure, and a vacuum pumping structure. The forming structure includes a forming furnace body having a heating cavity, a material waiting housing having a transition cavity, a feeding pipe having two ends respectively connected with the heating cavity and the transition cavity, and a vacuum control valve arranged on the feeding pipe. The material loading structure includes a material loading arm and a material loading driving mechanism, one end of the material loading arm is located in the transition cavity, and the other end of the material loading arm is penetrated through a material loading hole sealingly.

First claim

What is claimed is:

1. 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.

2. The die molding apparatus according to claim 1 , wherein the forming structure further comprises:
a heat insulation mechanism, comprising a heat insulation shield arranged in the heating cavity and a heat insulation driver connected with the forming furnace body; the heat insulation driver drives the heat insulation shield to seal an orifice of the feeding pipe, so as to prevent heat from entering the transition cavity through the feeding pipe.

3. The die molding apparatus according to claim 1 , wherein the material loading arm comprises an arm body and a clamping claw arranged at an end of the arm body, the other end of the arm body passes through the material loading hole and is connected with the material loading driving mechanism, the clamping claw is located in the transition cavity and configured to detachably clamp the forming mold.

4. The die molding apparatus according to claim 3 , wherein the clamping claw is provided with a clamping groove, and an end of the forming mold is clamped in the clamping groove.

5. The die molding apparatus according to claim 4 , wherein groove walls on both sides of the clamping groove are protruded with positioning blocks, and positions on the forming mold corresponding to the positioning blocks are provided with positioning grooves matched with the positioning blocks.

6. The die molding apparatus according to claim 1 , further comprising: a cooling structure configured for cooling the forming mold.

7. The die molding apparatus according to claim 6 , wherein the cooling structure comprises a lower cooling column vertically arranged and provided with a lower cooling channel; an end of the lower cooling column is located in the transition cavity and provided with a cooling end surface configured for placing the forming mold, and the other end of the lower cooling column is located outside of the transition cavity and connected with an external cooling water source.

8. The die molding apparatus according to claim 7 , wherein the lower cooling column is connected with the material waiting housing slidably and sealingly.

9. The die molding apparatus according to claim 8 , wherein the cooling structure further comprises a cooling driving mechanism for driving the lower cooling column to slide up and down, and an upper cooling column arranged opposite to be to the lower cooling column, the upper cooling column is provided with an upper cooling channel.

10. The die molding apparatus according to claim 7 , wherein the material waiting housing is provided with a discharge port arranged in communication with the transition cavity, and the die molding apparatus further comprises a blanking groove, one end of the blanking groove is connected with the discharge port, and the other end of the blanking groove is arranged adjacent to the cooling end surface.

11. The die molding apparatus according to claim 10 , wherein the material waiting housing is further provided with a feeding port, and the die molding apparatus further comprises a discharging valve configured for sealing the discharging port and a feeding valve configured for sealing the feeding port.

12. The die molding apparatus according to claim 1 wherein the forming furnace body comprises a furnace body provided with the heating cavity and a heating mechanism arranged in the heating cavity.

Assignees

• Univ Shenzhen

Inventors

• Ma Jiang
• Yang Jian

Classifications

• F27D15/02

  Cooling · CPC title

• C21D9/0062

  Heat-treating apparatus with a cooling or quenching zone · CPC title

• B21J1/006

  Amorphous metal · CPC title

• B21J5/02

  Die forging; Trimming by making use of special dies {; Punching during forging} · CPC title

• B22D17/02 Primary

  Hot chamber machines, i.e. with heated press chamber in which metal is melted · CPC title