Leather bursting experiment testing device

Abstract

The invention discloses a leather bursting experiment testing device. The leather bursting experiment testing device comprises a jacking rod, a driving device, an insulating clamping seat and a base;the insulating clamping seat is used for fixing a leather sample, and the driving device drives the jacking rod to apply upward bent tension to the middle position of the leather sample; the leather bursting experiment testing device further comprises an elastic conductive film, the insulating clamping seat has a first clamping position and a second clamping position, the leather sample is fixed to the first clamping position, the elastic conductive film is fixed to the second clamping position, the jacking rod is connected with one electrode of a power supply, the elastic conductive film is connected with the other electrode of the power supply, and a loop is formed when the jacking rod upwards displace to drive a leather testing piece and the elastic conductive film to make contact witheach other; and the leather bursting experiment testing device further comprises a resistivity sensor for recording the resistivity of the elastic conductive film, the resistivity sensor is used for judging the change amplitude of the resistivity, when cracks occur on the surface of the sample, the resistivity changes, the sample bursting height is determined by checking the change of the resistivity, and a numerical value is accurate.

Description

technical field [0001] The invention relates to the field of leather testing equipment, in particular to a leather cracking test testing device. Background technique [0002] Leather testing items mainly include physical performance testing, chemical performance testing, content determination, material identification, component analysis, toxic and harmful substance testing, environmental testing, azo testing, etc. Among them, the physical performance test includes the bursting strength and bursting height test of the leather surface. The bursting strength and bursting height of leather are an important item in leather testing, and a leather bursting detection device is used. The existing test standard adopts the standard of QB / T2712-2005 for testing. During the test, the surrounding of the sample is fixed with fixtures, and a steel ball is placed on the middle of the meat surface of the circular leather sample to move towards the leather. The leather is deformed by applying...

AI Technical Summary

Problems solved by technology

The disadvantage is that the manual rocker is difficult to keep rising at a constant speed, and the force value recording is inaccurate

The other is a semi-automatic instrument; relying on the motor to push the metal rod up, it is difficult to detect with the naked eye when the leather is cracked, and the pressure value on the ejector rod will change, which is easy to judge inaccurately. There is no detection of leather cracks in the prior art. Inspection equipment, and it is not easy to detect with the naked eye. In the semi-automatic instrument, the ejector rod moves upward at a constant speed, which is even more inconvenient to detect and record the pressure and extension height of the crack.

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