Precautions for installation and debugging of Bending Stiffness Tester

28-06-2024

The Bending Stiffness Tester (hereinafter referred to as the tester) is a basic instrument for testing the bending stiffness performance of paper and paperboard. This tester is a multifunctional stiffness tester, and the angle change of bending stiffness testing is fully automatically controlled by the motor, reducing human influence; The crease resilience test is manually rotated. It is a multifunctional intelligent measuring instrument widely used in paper enterprises, packaging manufacturers, quality inspection institutions and other units.

This experimental device is newly designed with a 32-bit high-speed ARM processor, which has high-speed data processing capabilities, high-speed sampling, and accurate data; Overload protection is set, which automatically resets when the range is exceeded. Adopting high-precision encoder closed-loop control, the acquisition accuracy is 0.025 degrees. 7-inch color LCD touch screen with Chinese and English display, easy to understand operation, real-time display of stiffness and angle (or time) curve function; The return speed is adjustable, and after the test is completed, it quickly returns to the starting position.

Installation and debugging

The instrument packaging box has an upper cover structure. Use a Phillips screwdriver to remove all screws around the bottom, lift the wooden box with the upper cover, take out the accompanying technical documents and accessories, and remove the two bolts at the bottom of the host.

Place the instrument on a horizontal and stable platform that is free of vibration sources, clean working environment, no strong magnetic field, and no strong air convection (no wind blowing on the instrument).

The sensor of this instrument is a high-precision small range force sensor (with a range of 1kg), so it is not allowed to forcefully impact the measuring head or any behavior that causes the sensor to exceed the range (the sensor has over range protection, but still needs to be noted).

The main power supply of the instrument is a three core plug, and it is strongly recommended to protect the ground wire by grounding it.

When starting up, nothing should be placed around the sample clamp, and the clamp will automatically operate during the self check process.

Test speed: According to GB/T 22364, it should be set at 5 °/s.

Testing angle: According to the national standard, the stiffness of the cardboard should be measured at 15 ° (7.5 °).

Bending length: According to the national standard, it is 50mm.

Sample width: According to the national standard, it is 38mm.

Zero angle threshold: 3mN is used for automatic detection of zero angle, triggering the start of testing threshold.

Automatic zero angle: Whether to enable the automatic detection of zero angle function.

The above parameters are only applicable for cardboard stiffness mode, and are independent of the parameters in crease stiffness test mode.


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