LT-JJ29-C Computerized National Standard Mattress Rolling, Softness and Hardness, Height Measurement Testing Machine (Rolling + Softness and Hardness + Height Measurement)

Short Description:

This Computerized National Standard Mattress Rolling and Edge Pressing Testing Machine (Rolling + Edge Pressing) evaluates the long-term durability of mattresses by simulating sleep-related rolling and edge-sitting stress. A rolling load module traverses the mattress surface at a set frequency to test rolling fatigue, while a separate edge compression mechanism assesses side support integrity. Compliant with national mechanical testing standards, it provides critical performance data 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	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.
4	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) Hardness grade: It is a range of numbers from 1 to 10 that expresses the softness or hardness of the product. Hs=1 to 5 indicates 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).
5	Appearance	The main frame is made of high-grade industrial aluminum profiles. For each machine column, two aluminum profiles are stacked, and the connection parts are treated with sheet metal baking varnish. machine The drive unit is located on the machine, with the gantry frame fixed and loaded onto four aluminum columns at the top of the machine. It operates stably and quietly.
6	Test tabletop material	The base is made of high-grade industrial aluminum profiles, and the tabletop is made of stainless steel 304.
7	Height of the test bench from the ground	180mm
8	Dimensions	340025002475mm (length * width * height)
9	Weight	Approximately 3,600 kg
10	Power supply and power	AC220V 50HZ, 3KW
11	The maximum sample range that can be used to test a single mattress	2400mm×2400mm×440mm
12	Operating system	One set each of manual and automatic systems. Accessories: A complete set of standard equipment for the instrument (operation manual, warranty card, pressure head, etc.)
13	Softness and hardness display method	numbers and text
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.
20	One set each of manual and automatic systems. Accessories: A complete set of standard equipment for the instrument (operation manual, warranty card, pressure head, etc.) 13. Softness and hardness display method: numbers and text