XQ-2517 Headphone Tensile Testing Machine 
I. Application scope of the earphone tensile testing machine：
This testing machine is suitable for conducting fatigue tests on head-mounted headphones for stretching and expansion. It is applicable in factories, research institutions, and universities for development and evaluation purposes. 
II. Main parameters of the earphone tensile testing machine：
1.Counting range: 0 - 99999999 (can be set arbitrarily) 
2. Speed: Adjustable from approximately 5 to 35 times per minute (industry standard) 
3. Initial width: 15mm 
4. Stretch width: 300mm (split on both sides) 
5. Testing Station: One station (bilateral movement, synchronous testing) 
6. Counting function: Automatically stops when the set number is reached. 
7. Travel adjustment: Original mechanical adjustment 
8. Speed display: LED display 
9. Speed Control: Continuous Speed Adjustment 
10. Power Supply: 220V / 50Hz 
11. Mechanical weight: Approximately 60 kilograms 
III. Advantages of the Earphone Stretch Testing Machine： 
The equipment mainly adopts electric operation, and its internal unique design structure makes it more reliable and durable. This machine has adjustable functions for speed, stroke and count, and is an excellent tool for testing the fatigue life of ear clips of head-mounted headphones. 
IV. Structure of the Earphone Stretch Testing Machine： 
This testing machine adopts a box-type structure. The unique internal design is independently developed by Xingqiao. The testing speed is achieved through a motor speed controller, and the stroke adjustment is accomplished through a mechanically adjustable mechanism specially designed by Xingqiao. 
V. Operating Procedures for the Earphone Stretch Testing Machine：
1. First, fix the product on the testing fixture and adjust the fixture position properly. 
2. Turn on the machine, start the main power supply, and set the required values. 
3. Conduct the experiment by starting the machinery. Once the required value is reached, the machinery will automatically stop. 
VI. Notes for the Earphone Stretch Testing Machine：
1.Before conducting the test, please make sure that the power supply is properly plugged in or connected. 
2. Before conducting the test, make sure that the product is properly installed and fixed. 
3. The mechanical transmission parts must be maintained regularly. 
4. After the test is completed, it is necessary to ensure that the power supply has been turned off. 
5. It is strictly prohibited to use auxiliary corrosive liquids to clean the machine. Instead, rust preventive oil must be used. 
6. This testing machine must be used exclusively by one person. During the testing process, it is strictly prohibited to strike the machine or have anyone stand near it. 
7. The machinery must be grounded.