Microwave heating resin sand core forming device and microwave heating resin sand core forming method

Abstract

The invention discloses a microwave heating resin sand core forming device and a microwave heating resin sand core forming method. The microwave heating resin sand core forming device comprises a fixed mold outer frame, a fixed mold ejector plate spring, a fixed mold ejector pin, a fixed mold ejector plate, a movable mold ejector rod, a movable mold ejector rod plate, a movable mold outer frame and a sand inlet hole; and the microwave heating resin sand core forming device is characterized in that the inner wall of the fixed mold outer frame and the inner wall of the movable mold outer frame are each provided with a mold movable block, and mold cavities are formed between the mold movable blocks; the lower end of the inner wall of the fixed mold outer frame and the lower end of the inner wall of the movable mold outer frame are correspondingly provided with bottom movable blocks which mutually form a flat bottom surface; the mold movable block and the bottom movable block are made of ceramics; a plurality of microwave divergence devices are arranged below the fixed mold outer frame and the movable mold outer frame; each microwave divergence device comprises a microwave divergence opening located below the bottom movable block, a microwave stirrer is arranged in each microwave divergence opening, and the microwave stirrer is connected with a motor through a coupler; and the lower end of each microwave divergence opening is connected with a microwave conveying pipe, and a microwave generator is arranged at the end of each microwave conveying pipe.

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 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 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 ...

AI Technical Summary

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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