A kind of microwave heating resin sand core forming device and method thereof

Abstract

The invention discloses a microwave heating resin sand core forming device and a method thereof, comprising a fixed mold outer frame, a fixed mold top plate spring, a fixed mold thimble, a fixed mold top plate, a movable mold ejector pin, a movable mold ejector plate, a movable mold The outer frame and the sand inlet hole are characterized in that: the inner wall of the outer frame of the fixed mold and the inner wall of the outer frame of the movable mold are respectively provided with mold blocks that form a cavity with each other; the inner wall of the outer frame of the fixed mold The lower end and the lower end of the inner wall of the movable mold outer frame are respectively provided with bottom movable blocks that form a flat bottom surface with each other; the material of the mold movable block and the bottom movable block is ceramic; the bottom of the fixed mold outer frame and the movable mold outer frame A plurality of microwave dispersing devices are provided; the microwave dispersing device includes a microwave dispersing port located under the bottom movable block, a microwave agitator is arranged in the microwave dispersing port, and the microwave agitator is connected with a motor through a shaft coupling; the microwave dispersing port The lower end is connected with a microwave transmission tube, and a microwave generator is arranged at the end of the microwave transmission tube.

Description

technical field [0001] The invention relates to the technical field of mold equipment, in particular to a microwave heating resin sand core forming device and a method thereof. Background technique [0002] Thermoforming resin sand is one of the fastest growing casting processes in the past ten years. The castings produced by thermoforming resin sand have precise dimensions, smooth surfaces, clear edges and corners, low rejection rate, and can save modeling time and improve production. Efficiency, improvement of working conditions and production environment; thermoforming resin sand takes a certain amount of time to heat cure. After molding the core, it is necessary to wait for the resin sand to harden and establish a certain strength before starting the mold. It is difficult to mold. As a core box, due to the thick sand layer, the usual mold-releasing time ranges from 3 minutes to 10 minutes after molding. In addition to the mechanical action time, the efficiency per hour c...

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Problems solved by technology

[0002] Thermoforming resin sand is one of the fastest-growing casting processes in the past ten years. The castings produced by thermoforming resin sand have precise dimensions, smooth surface, clear edges and corners, low scrap rate, and can save molding hours and improve production. Efficiency, improving working conditions and production environment; it takes a certain amount of time for thermoforming resin sand to heat-cure. After molding and making cores, the resin sand must harden and build a certain strength before the mold can be released. Molding is difficult. As a core box, due to the thicker sand layer, the usual mold-making time ranges from 3 minutes to 10 minutes after molding, plus the mechanical action time, so the hourly efficiency can only be 5-20 boxes / hour; this It seriously affects the turnover rate and production efficiency of the mold; and because of the hot core box core shooting, the design of the exhaust channel is not well designed, and the exhaust channel is blocked due to premature curing, resulting in poor exhaust and failure of core shooting

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