Sand mold hardness tester capable of realizing online automatic detection

Abstract

The utility model relates to a sand mold hardness tester capable of realizing online automatic detection, belongs to the technical field of sand mold hardness testers, and solves the problems that a pressure foot of a sand mold hardness tester in the prior art is not telescopic, the accurate measurement of indentation depth cannot be realized, and the online automatic detection of sand mold hardness cannot be realized. The tester is characterized in that a displacement sensor fixing base is installed in a lower shell; a displacement sensor is installed in an inner cavity of the displacement sensor fixing base; a pressing foot is a telescopic pressing foot, a pressing head is installed in the telescopic pressing foot, the left end of the pressing head is fixedly connected with a movable iron core of the displacement sensor, and a pressing foot return spring is installed at the left end of the telescopic pressing foot. A first photoelectric switch and a second photoelectric switch are respectively arranged on upper surface of lower shell. The hardness tester has the beneficial effects that the technical problems of accurate measurement of indentation depth and telescopic pressing feet are solved, the tester is connected with a robot mechanical arm in use, automatic detection is realized under the driving of the robot mechanical arm. And the requirement for automatic production ofmetal casting products is met.

Description

technical field [0001] The invention belongs to the technical field of sand mold hardness testers, in particular to a sand mold hardness tester capable of online automatic detection. Background technique [0002] The sand mold hardness tester is used to detect the surface hardness of the casting sand mold, so as to provide technical parameters for controlling the quality of casting products and optimizing the sand mold manufacturing process. The existing sand mold hardness tester is hand-held. When using it, the operator needs to hold the sand mold hardness tester, and contact the presser foot plane at the front of the hardness tester with the surface of the sand mold to be tested, so that the axis of the hardness tester is perpendicular to the sand mold surface and apply force. , when the presser foot plane is in close contact with the surface of the sand mold to be tested and the pointer stops swinging, press the locking pin to lock the pointer position, the operator can r...

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the present invention is to overcome the deficiencies and defects of the prior art, solve the technical problems of accurate measurement of indentation depth and the expansion and contraction of the pressing foot, and provide an online automatic detection sand hardness tester that can be installed on the manipulator , so as to realize the online automatic detection of sand mold hardness to meet the needs of automatic production of metal casting products

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