LT-JJ29 Computerized National Standard Mattress Comprehensive Testing Machine (Mattress Rolling, Edge Pressing, Softness and Hardness, Height Measurement Testing Machine)

Short Description:

This Computerized National Standard Mattress Comprehensive Testing Machine integrates four key evaluation functions: rolling durability, edge compression resistance, firmness measurement, and height profiling. It simulates long-term real-world use—such as repeated body rolling during sleep—by applying controlled cyclic loads with a rolling module and specialized edge presses. The system automatically assesses mattress firmness and measures dimensional stability, providing comprehensive, standards-compliant data on durability, comfort, and safety for innerspring, foam, and fiber mattresses.

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Product parameters
1	Control mode:	Computer control
2	Pavement durability test device	(1) Mechanical device capable of driving the roller to move relatively horizontally on the surface of the mattress: the rotational moment of inertia of the roller is (0.5±0.05) kg /m ², the loading frequency should be (16±2) times /min, the static load is (1400±7) N, and the test times are greater than 30,000 times. (2) Roller: Elliptical, with an external dimension tolerance of ±2mm. The surface should be hard, smooth, free of scratches and other surface defects. The length is (1000±2)mm, and the friction coefficient is between (0.2 and 0.5). Roller chamfer: R30. The maximum diameter of the roller: 300±1mm. (3) Motor: Panasonic servo motor from Japan; (4) Test stroke: 250mm on each side of the centerline of the mattress. (5) The accuracy of the force measurement device shall not be less than 1%, the accuracy of the dimensional device shall not be less than 1mm, and the position deviation of the loading block shall be ±5mm.
3	Edge durability test device	(1) Loading pad size: 38049575mm. Its surface is hard and smooth. It is connected to the test equipment and can rotate on the vertical plane around the horizontal axis. (2) Vertical downward loading force: 1000N; (3) Total number of tests: 5,000 times; (4) Load holding time: (3±1) seconds.
4	Height measurement device	(1)Height measurement accuracy: ±0.5mm; (2) Height measurement pad: The measurement surface is a flat and smooth rigid cylinder. (3) Measuring pad diameter: 100mm, chamfer R10; (4) Force application speed of the spacer block: 100±20mm/min; (5) Vertical downward force: Apply a force of 4N. At this time, the distance between the lower surface of the circular pad and the flat plate is the height of the mattress surface. Measure the height: After conducting 100 durability tests and 29,900 durability tests on the initial mattress surface, measure the height of the mattress surface respectively. Height measurement system: By setting the force value through software and applying force vertically downward at a fixed speed, it is directly connected to the PLC touch screen.
5	Hardness and softness testing device	(1) Loading pad: A rigid cylinder with a smooth surface and a diameter of 355mm, its end face is a protruding spherical surface with a radius of curvature of 800mm, and the radius of curvature of its front edge is 20mm. (2) Loading capacity: 1000N; (3) Operating speed during loading and unloading: (90±5) mm/min. The system can be set arbitrarily from 0.01 to 200mm/min. (4) Loading deflection curve: The relationship between the force value applied by the loading pad on the specimen and the corresponding depression value; (5) The hardness value (Hy) of the mattress is the average of the slopes (the ratio of the loading force N to the depth of the depression at the loading point in mm) of the loading deflection curve at 210N, 275N and 340N. (6) Softness and hardness display method: numbers and text. Hardness grade: It is expressed by the range of numbers 1 to 10 to indicate the softness or hardness of the product: Hs=1 to 5 is considered a hard mattress (the smaller the number, the harder it is). Hs=6 to 10 indicates a soft mattress (the larger the number, the softer it is).
6	Appearance	The main frame is made of high-grade industrial aluminum profiles with a cross-sectional area of 80*80mm. The connection parts are treated with sheet metal and baked paint.
7	Test tabletop material	The base is made of high-grade industrial aluminum profiles, and the tabletop is made of stainless steel.
8	Height of the test bench from the ground	180mm
9	Dimensions	340025002320mm (length * width * height)
10	Weight	Approximately 3,600 kg
11	Power supply and power	AC2201V 50HZ, 3KW
12	Maximum test sample range	2400mm×2400mm×440mm
13	Test speed	90mm/min; 100mm/min
14	The program screen can be selected in Simplified Chinese, Traditional Chinese or English.
15	It can achieve control of force and displacement speed, display displacement and time, force-displacement maximum and minimum force and life curves (the variation curves of the maximum force value and maximum displacement value of each channel in each cycle).
16	The units of force values can be selected as kgf,lbf,kN, and N.
17	Each force and displacement sensor can be calibrated in 10 segments, or single-segment calibration can be used.
18	The report can be output in Word, Excel or PDF format.
19	The test curve data will be recorded in the database. When the program does not run the test, the display curve can be called from the database.