Blank casting cavity pressure detection device

Abstract

The invention relates to the technical field of casting detection, in particular to a blank casting cavity pressure detection device which comprises a pressure detection cover, a rotating sleeve piece is arranged at the circle center of the upper surface of the pressure detection cover, an inner rotor is arranged in the inner cavity of the rotating sleeve piece, and a screw is in threaded connection with the interior of a groove formed in the upper surface of the inner rotor. The upper end of the screw rod penetrates through a through hole in the upper end of the rotating sleeve piece to be in threaded connection with the screw rod, a plurality of guide grooves are formed in the outer ring wall of the pressure detection cover around the circle center of the pressure detection cover, guide block strips are slidably connected in the guide grooves, and side guide block strips perpendicular to the guide block strips are arranged on the side walls of the guide block strips. According to the device, the guide grooves in the outer ring of the pressure detection cover uniformly slide on the guide block strips, so that the connection stress of the pressure detection cover and the opening end of the blank casting is more uniform, and meanwhile, the rotary supporting plate part can rotate on the second inner sliding part through the rotary supporting plate accessory part, in this way, the blank casting can be conveniently supported by rotating the supporting plate part.

Description

technical field [0001] The invention relates to the field of casting detection, in particular to a blank casting cavity pressure detection device. Background technique [0002] Some castings with cavities in the foundry industry, the cavities are generally used as oil chambers, circulating water chambers, compression chambers, etc., and castings are metal shaped objects obtained by various casting methods, that is, the smelted liquid metal is poured , Injection, suction or other casting methods are injected into the pre-prepared mold, and after cooling, grinding and other subsequent processing methods, the obtained objects have a certain shape, size and performance, and the casting needs to be pressed after forming the blank. Inspect to ensure that the cavity is well sealed and there is no risk of leakage. At present, the pressure inspection of the cavity of this type of casting is performed after the finishing of the casting, and the pressure inspection of the casting is c...

AI Technical Summary

Problems solved by technology

[0004] (1) When the existing rough castings are tested, multiple strong pushing screws are required to squeeze and connect the castings. In this way, it is impossible to ensure that the extrusion force of each bolt is balanced during the extrusion connection process, so that it cannot be guaranteed The airtightness of the connection between the detection device and the casting;

[0005] (2) In the process of testing the air tightness of rough castings, the contact surface at the bottom will have certain deformation or processing defects, which will cause the bottom surface of the rough castings to be unable to match the testing device

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