Fixing device of casting box

Abstract

The invention belongs to the field of smelting devices, and particularly discloses a fixing device of a casting box. The fixing device comprises a fixed seat, a first fixed frame, a second fixed frame, a first gear and a second gear, wherein threaded holes are formed in the first fixed frame and the second fixed frame; the two ends of a bidirectional screw are in threaded connection with the threaded hole of the first fixed frame and the threaded hole of the second fixed frame respectively; a plurality of locating bosses are arranged at the upper end of the first fixed frame; a plurality of locating blocks are arranged at the lower end of the second fixed frame; blind holes are formed in the lower ends of the locating blocks; locating balls and springs are arranged in the blind holes; the lower ends of the springs are connected with the locating balls; the diameter of the blind holes is smaller than the diameter of the locating balls; the first gear is fixedly connected at the middle part of the bidirectional screw; the first gear meshes with the second gear; the fixed seat is rotatably connected with the second gear; and the second gear is fixedly connected with a connecting rod. According to the fixing device, connection parts of an upper sand box and a lower sand box are guaranteed to be in the same horizontal plane while the casting box is fixed, the fixing effect of the casting box is good, and the casting quality of a product is prevented from being affected.

Description

technical field [0001] The invention relates to the field of casting devices, in particular to a casting box fixing device. Background technique [0002] Casting refers to the processing method of melting solid metal into liquid and pouring it into a mold of a specific shape, and waiting for it to solidify and form. The metals to be cast include: copper, iron, aluminum, tin, lead, etc. The common casting materials are raw sand, clay, water glass, resin and other auxiliary materials. In the existing casting process, the casting box needs to be fixed, that is, when the upper sand box and the lower sand box are combined, the upper sand box and the lower sand box need to be pressed and fixed together. At present, the commonly used pressing and fixing method is The screw rotary pressure box type, which directly exerts pressure on the upper and lower sand box surfaces by several screws, so that the upper sand box and the lower sand box can be combined and fixed. Because the uppe...

AI Technical Summary

Problems solved by technology

Because the upper sand box and the lower sand box are fixed by the screw, and the direct contact between the screw and the upper sand box makes the thread of the screw easy to wear, which affects the fixing effect

Moreover, when the existing sand box is fixed, the screw rods are rotated successively, which cannot achieve the purpose of fixing at the same time, and each screw rod may not be on the same horizontal plane because of the different rotation angle or number of turns, etc. That is to say, it cannot guarantee that the connection between the upper sand box and the lower sand box is evenly stressed, resulting in unstable connection between the upper sand box and the lower sand box, which affects the quality of casting products

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