Sand box turnover device for butterfly valve casting

Abstract

The invention discloses a sand box turnover device for butterfly valve casting. The sand box turnover device comprises a bottom plate, wherein a supporting plate and a support column are correspondingly arranged at the two ends of the bottom plate, a rotating seat II is arranged on the side face of the supporting plate, and a rotating rod II is arranged in the rotating seat II; two sliding groovesin the length direction of the bottom plate are formed below the rotating rod II, sliding blocks are arranged in the sliding grooves, and a supporting columns are fixed at the upper ends of the sliding blocks; a rotating seat I is arranged at the upper end of the support column, a rotating rod I is arranged in the rotating seat I, and C-shaped chucks are arranged at the front end of the rotatingrod I and the front end of the rotating rod II; a sand box is arranged between the chucks, clamping bolts which are in threaded connection with the chucks are arranged at the upper ends of the chucks,and the lower ends of the clamping bolts are in contact with the upper end of the sand box; and limiting blocks are arranged at the front ends of the chucks, a large gear is arranged at the rear endof the rotating rod I, a stepping motor is further arranged on the bottom plate, and a pinion meshed with the large gear is arranged on a main shaft of operation is simple, the turnover process is gentle, the collision occurring in the sand box is reduced, and the integrity of an internal sand mold is ensured.

Description

technical field [0001] The invention relates to the field of casting, in particular to a sand box turning device for butterfly valve casting. Background technique [0002] Butterfly valve, also known as flap valve, is a regulating valve with simple structure, which can be used for switch control of low-pressure pipeline medium. The valve body of butterfly valve is mainly made by casting process. During the casting process of butterfly valve, sand boxes are usually encountered. In the case of overturning, it is required to be stable during the overturning process, otherwise the sand mold will be damaged or the casting will fall off, and the direct hoisting by the crane cannot guarantee the smooth completion of the overturning. Although some overturning mechanisms have appeared, these mechanisms are bulky and structurally Complicated, the operation is very difficult, and sometimes it will cause personal injury to people and bring inconvenience to people's work. Contents of t...

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Problems solved by technology

[0002] Butterfly valve, also known as flap valve, is a regulating valve with simple structure, which can be used for switch control of low-pressure pipeline medium. The valve body of butterfly valve is mainly made by casting process. During the casting process of butterfly valve, sand boxes are usually encountered. In the case of overturning, it is required to be stable during the overturning process, otherwise the sand mold will be damaged or the casting will fall off, and the direct lifting of the crane cannot guarantee the smooth completion of the overturning. Although some overturning mechanisms have appeared, these mechanisms are bulky and structurally Complicated, the operation is very difficult, and sometimes it will cause personal injury to people and bring inconvenience to people's work

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