Vacuum pressure casting machine
A technology of vacuum pressure casting and die-casting machine, which is applied in the field of machinery and can solve problems such as complex structures and inconspicuous effects
Inactive Publication Date: 2012-04-11
吴为国
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Problems solved by technology
Existing casting methods include: gravity casting, pressure casting, centrifugal casting, low-pressure casting and other types. Each casting type has different casting machines. Generally, the casting melt is cast and solidified in the air, resulting in There are air holes and looseness in the casting, and there is also a vacuum pressure casting machine, which is equipped with an air extraction device at the exhaust port of the mold, but the structure is complex and the effect is not obvious
Method used
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Embodiment Construction
[0016] The present invention will be further described below with specific embodiment:
[0017] Such as figure 1 As shown, a vacuum pressure casting machine has a moving casing (4) and a fixed casing (5) to form a sealed cavity (A) that cooperates with each other, the mold is in the sealed cavity (A), and the moving casing (4 ) and the fixed housing (5) are respectively installed on the movable mold bottom plate (30) and the fixed mold bottom plate (31) of the horizontal die-casting machine, and there are die-casting molds in the movable mold bottom plate (30) and the fixed mold bottom plate (31), for To reduce the sealing link of the ejection mechanism of the die-casting mold, a hydraulic ejection mechanism can be made in the die-casting mold. The external feeding port (11) of the barrel (42) of the type die-casting machine has a sealing cover (16), and the sealing cover (16) has a high temperature resistant gasket, and the sealing cover (16) is connected to the cylinder (17...
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The invention relates to a vacuum pressure casting machine, which comprises a sealed chamber (A), wherein the sealed chamber (A) is formed by a movable shell and a fixed shell in a matching way. A die is arranged in the sealed chamber (A). The movable shell and the fixed shell are respectively installed on a movable die bottom plate and a fixed die bottom plate. A pressure casting die is arrangedin the movable die bottom plate and the fixed die bottom plate. A hydraulic ejector mechanism is machined in the pressure casting die. A sealing cover is arranged at an external charging hole and is connected with a cylinder. When the cylinder moves upward, the sealing cover is opened and molten metal is poured into a charging barrel; and when the cylinder moves downward, the external charging hole is sealed, a valve is opened to enable the inside of the sealed chamber (A) to reach certain vacuum degree and a pressure injection oil cylinder to enable the molten metal to be pressed into the die. In order to enable the inside of the sealed chamber (A) to reach certain vacuum degree rapidly, the sealed chamber is connected with a vacuum energy storage tank through a pipe, the valve is installed and the vacuum energy storage tank is connected with a vacuum pump.
Description
technical field [0001] The invention relates to a casting machine, in particular to a vacuum pressure casting machine, which belongs to the field of machinery. Background technique [0002] Casting machines are indispensable equipment in the machinery manufacturing industry. Existing casting methods include: gravity casting, pressure casting, centrifugal casting, low-pressure casting and other types. Each casting type has different casting machines. Generally, the casting melt is cast and solidified in the air, resulting in There are air holes and looseness in the casting, and there is also a vacuum pressure casting machine, which is equipped with an air extraction device at the exhaust port of the mold, but the structure is complicated and the effect is not obvious. Contents of the invention [0003] The purpose of the present invention is to provide a pressure casting machine in which molds are formed in a vacuum (negative pressure) cavity in order to overcome the defec...
Claims
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IPC IPC(8): B22D18/06
Inventor 吴为国
Owner 吴为国