Mattress durability and hardness combined testing machine
Suitable to evaluate the softness/hardness of mattress and surfacing durability test
Uses cylindrical or hexagonal load roller to apply repeated load on parts of the test of the horizontal mattress, to test the bearing capacity of the mattress with long-term repeated loading
Includes 355mm diameter disc to press three point on the mattress to determine the hardness of mattress (total 10 levels, 1-5 level is hard, 6-10 is soft)
According standard: BS EN 1957 and ASTM F1566-99 part 7
Main Parameters
The roller size tolerance: ±2mm
Roller: hexagonal load roller apply 1400 ± 7N on the mattress
Height measuring load pad: level and smooth and rigid cylinder, high strength POM plastic material, friction coefficient between 0.2 ~ 0.5
Roller rotary inertia (0.5±0.5) kg m2, loading frequency (16±2) times/min
Roller can stick cylinder with mattress deformation of floating up and down, cycle rolling, load force error ±5N
Soft/hard load pad surface is smooth, diameter 355mm of rigid cylinder is made of high strength POM plastic
The running speed of 90 ± 1 mm/min when height and hardness measuring device in loading and unloading
Height and hardness measuring device can automatically measure the total load, height effort is ± 0.5mm, load effort is ± 1N
Control Device Technical Specification
Elegant appearance, all hidden wiring, greatly improving the security
Gantry mechanical structure, the use of high-precision servo motor, increases the use life and accuracy of test data
Low-noise, high-precision ball screw and linear guide as transmission parts, improving the overall mechanical strength and stiffness, effectively reducing operating noise, roller load the used of sliding bearings to free load, loading force closer to the standard requirements
Edge load module through servo motor to drives load pad free movement up and down, using the load block+linear sliding bearing free load, inner bearings rolling friction (friction coefficient: 0.002), ensures the accuracy of loading force to meet with standard requirements
Height, length, and width are adjustable to fit different sizes of mattress
Has intelligent software, operation control is easy, test program will be auto-completed, and display the specimen hardness value (H), hardness level (HS), and record the operation state
Test stroke: ASTM: maximum mattress width; minimum 70% of mattresses width or 38 inches (965mm) take the smaller value; BS EN: mattress midline each about 250mm
Test speed: less than 20 cycles/min; BS EN: 16 ± 2 cycles/min
