Device for preparing leather sample with double holes

Abstract

The invention discloses a device for preparing a leather sample with double holes. The device comprises a bracket 8, wherein a hydraulic press 9 is arranged at the bottom of the bracket 8; a base plate 10 is arranged on a pressure output end of the hydraulic press 9; a spring 11 is arranged at the two ends of the base plate 10; an upper positioning plate 12 is connected with the other end of the spring 11; a cutter substrate 1 is arranged on the lower part of the upper positioning plate 12; the lower part of the cutter substrate 1 is provided with a groove 2; the opening of the groove 2 is provided with a dumbbell-shaped cutter 6; hole cutters 3 are arranged at the two ends in the groove 2; leather is put on the base plate 10; the base plate 10 is pushed to move upwards by the hydraulic press; and the leather is driven to press towards the dumbbell-shaped cutter 6 and the hole cutters 3 on the lower part of the cutter substrate 1 by the base plate 10 so as to mold the leather sample at one time. The device has the characteristics of simple structure, light weight and convenient operation.

Description

technical field [0001] The invention relates to the technical field of measuring leather shrinkage temperature parameters, in particular to a leather sample preparation device with double holes. Background technique [0002] Shrinkage temperature is the main parameter that marks the thermal stability of leather. Accurate and rapid detection of the shrinkage temperature of leather is of great significance for timely guiding the production process and providing relevant data and support for professional research. [0003] At present, at home and abroad, whether it is the most original pointer leather shrinkage temperature tester or the improved semi-automatic or automatic leather shrinkage temperature tester, the preparation and fixing methods of leather samples are basically the same, that is, manual sample preparation , fixed by alligator clips. The specific process is: use the standard tool equipped with the pneumatic pressure leather sampler to prepare a leather sample wi...

AI Technical Summary

Problems solved by technology

However, this sample preparation method not only has the problem of bulky sampler and inconvenient operation, but also the noise of the compressor equipped with the pneumatic sampler pollutes the quiet working environment of the laboratory. The way the alligator clips fix it on the test stand for heating measurements has a large artificial influence on the measurement results

The influence of using alligator clips to fix the leather sample on the measurement results mainly comes from two aspects: one is that the leather sample is a soft material that can be deformed after being stressed, so due to the operator's personal habits and other reasons, when the leather sample is fixed The problem of the difference in the degree of tightness; the second is the difference in the elasticity of the crocodile clip itself and the slippage of the leather sample during the measurement due to the bluntness of the jaw and the decrease in elasticity as the use of time prolongs

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