The toe peel strength testing machine is a key equipment in the field of footwear manufacturing and quality inspection. It simulates the separation of the sole and upper during actual wearing, accurately measures the bonding strength between the two, and provides scientific basis for the durability evaluation of footwear products. This article will delve into its working principle and key points for precision maintenance.

1、 Working principle of toe peel strength testing machine

The working principle of the toe peel strength testing machine is relatively direct and efficient. During testing, fix the finished shoe onto the shoe last and clamp it in a specific fixture of the testing machine. Subsequently, the testing machine drives the peeling knife at a set speed (usually20±2mm/min）Peel off along the joint between the sole and upper of the shoe. During this process, the built-in force measurement system of the testing machine will monitor and record the required force value during the peeling process in real time, that is, the peeling force. Finally, based on the measured peeling force and the preset blade width, the system can calculate the peeling strength of the toe, thereby quantitatively evaluating the bonding quality of the shoe.

2、 Key points for maintaining the accuracy of the toe peel strength testing machine

To ensure the long-term stable operation of the toe peel strength testing machine and the accuracy of the test results, daily precision maintenance is crucial. The specific maintenance points include:

Regular calibration: The force measurement system of the testing machine should be calibrated regularly to ensure that its measurement accuracy meets the standard requirements. During the calibration process, it is necessary to use standard weights or professional calibration equipment to perform multi-point calibration on the force measurement system in order to correct any possible system errors.

Cleaning and maintenance: Keeping the testing machine clean is a basic requirement for maintaining its accuracy. After the test is completed, the residue on the testing machine, especially the blade and fixture parts, should be cleaned in a timely manner to prevent the accumulation of impurities from affecting the test results. At the same time, regularly lubricate the transmission components of the testing machine to ensure smooth operation.

Component inspection and replacement: Regularly inspect the cutting edge, fixtures, and other vulnerable parts of the testing machine. If wear or damage is found, they should be replaced in a timely manner. The status of these components directly affects the accuracy of the test results and cannot be ignored.

Environmental control: The testing machine should be placed in an environment with suitable temperature and humidity to avoid extreme environmental conditions affecting its performance.

By deeply understanding the working principle of the toe peel strength testing machine and strictly following the precision maintenance points, the long-term stable operation of the testing machine and the accuracy of the test results can be ensured, providing strong support for the quality control of footwear products.