LQ-500 sponge foam ball falling rebound tester

Purpose:

This machine is designed and manufactured in accordance with GB/T6670-97, and conforms to ASTM American Standard D3574 and ISO8307 test standards. It is suitable for testing the falling ball resilience of soft polyurethane foam. The instrument calculates the percentage of the ratio of the steel ball's rebound height to the steel ball's fall height, that is, the rebound rate, which represents the rebound performance of the foam plastic, by the steel ball with a given diameter and mass falling freely on the foam plastic sample at a specified height. The machine is controlled by a microprocessor, with a Chinese LCD display and the ability to print test data. This machine has the characteristics of safe use, reliability, and high measurement accuracy.

Technical specifications:

Distance of steel ball falling:460 ± 0.5% mm (National Standard) 500 ± 0.5% mm (American Standard)

Steel ball diameter: ￠16±0.05 mm

Precision of ball rebound rate:<1.5%

Tested sample size:100mm (length) x 100mm (width) x 50mm (height)

Automatic calculation of average rebound debugging

Automatically calculate the average rebound rate

Experimental process description：

1. Place the ball rebound tester on a horizontal tabletop or ground. If the placement plane is not horizontal, use a level ruler to adjust the placement plane to horizontal first, and then check if the top panel of the ball rebound is horizontal. If it is not horizontal, adjust it to horizontal by turning the base screw (it has been adjusted when leaving the factory, but if there are changes during transportation, it needs to be adjusted again).

2. Adjust the height of the test drop according to the height to be tested, and press or remove the height adjustment block.

3. Connect the sensor data cable on the host of the ball drop rebound tester to the "data cable" interface on the control box, connect the 5V power supply to the "power" interface on the control box, and then turn on the "power switch" to supply power to the equipment.

4. Cut the sample into 100mm * 100mm * 50mm, place it on the sample platform, adjust the platform height, and clamp the sample tightly with the upper panel.

5. At this point, the instrument will display "Welcome to use the ball drop rebound testing system". Clicking "Test" will enter the interface for selecting the test height. Continuing to press the "Test" button will switch between 500mm and 460mm. When the arrow points to the corresponding height, click "OK" to enter the test interface.

At this point, the interface displays "Under Test". The steel ball is released through the steel ball release device, indicating the end of the test. If the test did not hit the wall, click "OK" to save the test results, and the test data will be valid. Otherwise, click "Cancel", and the test will be invalid.

7. Use the steel ball release device to remove the steel ball, click "Test", and the screen will display "Under Test". Continue the test for 9 valid tests, and click "Print" to print the test report.

At any time, you can use the 'back' button to invalidate all previous experiments and start anew.

9. The test report includes four parts of information: test height, test frequency, average rebound height, and average rebound rate.

10. After the experiment is completed, turn off the "power switch" to end the experiment.