Novel shore durometer

Abstract

The invention provides a novel shore durometer which comprises a housing, an indenter, an adjusting screw rod and the like, wherein an indenter fixing ring is mounted on an internal wall of the housing; the indenter is clamped at the upper end of the indenter fixing ring; a slide block is arranged at the upper end of the indenter; an electronic extension measuring scale is arranged at the upper end of the slide block; the adjusting screw rod is arranged at the upper end of the electronic extension measuring scale; a spring is arranged on the outer side of the electronic extension measuring scale; a mounting nut is arranged on the outer side of the adjusting screw rod; a control panel is arranged at the upper end of the housing; and a display screen and control buttons are arranged on the control panel. According to the durometer, the indenter fixing ring is added, the length of the indenter extending out of an indenter foot can be adjusted, and the measuring precision is improved; the adjusting screw rod is further added, a compression deformation degree of the spring can be changed by adjusting the height of the adjusting screw rod; and the length of the indenter and the deformation degree of the spring are adjusted as required, so that a precise hardness value is obtained.

Description

technical field [0001] The invention relates to the technical field of measuring plastic products, in particular to a novel Shore hardness tester. Background technique [0002] The Shore durometer is an instrument used to measure the hardness of rubber and plastic products. It has the advantages of simple structure, convenient use, small size, light weight, and rapid measurement. To play an important role, the Shore A hardness tester uses the test force to press the indenter vertically into the surface of the sample. When the surface of the indenter is completely attached to the surface of the sample, the measured distance between the tip surface of the indenter and the plane of the indenter is measured. The extension length is calculated by the CPU to obtain the Shore A hardness value, but the existing Shore hardness tester fixes the indenter through the interaction between the presser foot and the spring. The working pressure range of the spring is fixed, and the influenc...

AI Technical Summary

Problems solved by technology

[0002] The Shore durometer is an instrument used to measure the hardness of rubber and plastic products. It has the advantages of simple structure, convenient use, small size, light weight, and rapid measurement. To play an important role, the Shore A hardness tester uses the test force to press the indenter vertically into the surface of the sample. When the surface of the indenter is completely attached to the surface of the sample, the measured distance between the tip surface of the indenter and the plane of the indenter is measured. The extension length is calculated by the CPU to obtain the Shore A hardness value, but the existing Shore hardness tester fixes the indenter through the interaction between the presser foot and the spring. The working pressure range of the spring is fixed, and the influence of comprehensive factors such as the thickness and hardness of the sample on the measurement results has to be considered when using it. When the hardness of the sample is small, the displacement of the indenter is also small, thereby reducing the Measurement accuracy; when the hardness of the sample is high, although the displacement of the indenter becomes larger, the indenter and the presser foot will also appear to be flush, and the detected hardness value at this time is not the hardness value of the sample

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