Device and method for measuring leather shrinkage temperature by deriving displacement based on lever principle

Abstract

The invention discloses a device and method for measuring the shrinkage temperature of leather by deriving displacement based on the lever principle, and the device is characterized in that a heatingdevice is arranged at the lower part of a support main body, the lower end of a leather sample is fixed in the heating device, and a sample fixing mode of outputting a displacement signal from the upper end is adopted; the upper end of the leather sample is connected with the upper movable hook, the other end of the upper movable hook is connected with the front end of the leading-out lever, the rear end of the leading-out lever is provided with a 3 g balance weight and mark to serve as tension, the leading-out lever is thin and light enough, a displacement signal is led out under the condition of almost no friction force, and therefore the sensitivity is extremely high. And conditions are created for accurately and reliably acquiring shrinkage deformation (displacement) signals of the leather sample by the camera. Theoretically, when the lever rotates around the blade as the axis, rolling displacement and sliding displacement do not exist, and therefore the problem of friction force does not exist. Therefore, the device is high in measurement precision and almost has no friction force.

Description

【Technical field】 [0001] The invention belongs to the detection field, and in particular relates to a device and method for deriving displacement and measuring leather shrinkage temperature based on the principle of leverage. 【Background technique】 [0002] In the detection process of leather shrinkage temperature parameters, it is required to detect the signal of shrinkage deformation (hereinafter referred to as displacement) of the sample in a heating medium such as glycerin in real time in order to determine the shrinkage temperature parameters and lock them according to the definition of national testing standards. However, since the heating medium heats up at a constant speed according to the detection requirements, and the maximum temperature can reach 140°C, it is difficult for any type of displacement sensor to collect displacement signals in this high-temperature and changeable environment. It is a natural choice to collect displacement signals in a good environment...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the disadvantages of friction still existing in the above-mentioned existing displacement derivation technology, and provide a device and method for deriving displacement and measuring leather shrinkage temperature based on the principle of leverage, so as to solve the problem of horizontal analysis of the output displacement signal from the lower end of the sample. The force causes the friction problem of the lead-out rod on the wall of the sliding hole

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