Hardness Tester Mattress Testing Machine Mattress Edge Test Instruments Hardness Tester

Product Description

No.	Product Name
LT-JJ29-A03	Comprehensive Mattress Testing Machine (Mattress Rolling, Edge Pressing, Softness And Hardness, Height Measurement Testing Machine)
Technical Specification
1. Control method: PLC + touch screen
2. Pavement durability test device: 1) A mechanical device that can drive the roller to move relatively horizontally on the mattress surface: the roller rotation moment of inertia is (0.5±0.05) Kgm2, the loading frequency should be (16±2) times/min, and the static load is (1400± 7) N, number of tests > 30,000 times; 2) Roller: oval, with an outer dimension tolerance of ±2mm, the surface should be hard, smooth, without scratches and other surface defects, the length is (1000±2)mm, the friction coefficient is between (0.2~0.5), the roller Chamfer: R30, maximum roller diameter: 300±1mm; 3) Motor: servo motor drive; 4) Test stroke: 250mm on the left and right sides of the mattress center line; 5) The accuracy of the force measuring device is not less than 1%, the accuracy of the dimensional device is not less than 1mm, and the position deviation of the loading block is ±5mm.
3. Edge durability test device: 1) Loading pad size: 380*495*75mm, 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: 5000 times; 4) Holding time: (3±1) s.
4. Height measuring device: 1) Height measurement accuracy: ±0.5mm; 2) Height measuring pad: The measuring surface is a flat and smooth rigid cylinder; 3) Measure the diameter of the pad: 100mm, chamfer R10; 4) Pad force application speed: 100±20mm/min; 5) Vertical downward force: Apply 50N force. At this time, the distance between the lower surface of the measuring surface of the circular pad and the flat plate is the height of the mattress surface; Measurement height: The initial surface height of the mattress, after 100 and 29,900 durability tests, measure the surface height respectively; Height measurement system: Set the force value through software and apply force vertically downward at a constant speed.
5.Softness and hardness testing device: 1) Loading pad: a rigid cylinder with a smooth surface and a diameter of 355mm. The end face is a convex spherical surface, the radius of curvature of the spherical surface is 800mm, and the radius of curvature of its front edge is 20mm; 2) Loading capacity: 1000N; 3) Running speed during loading and unloading: (90±5) mm/min, the system can be set arbitrarily between 0.01-200mm/min; 4) Loading deflection curve: the relationship between the force value exerted by the loading pad on the specimen and the corresponding depression value; 5) The hardness value (Hy) of the mattress is the average slope of the loading deflection curve at 210N, 275N and 340N (ratio of loading force N and loading point depression depth mm); 6) Hardness grade: It expresses the softness and hardness of the product in the range of numbers 1 to 10; Hs=1~5 is a hard mattress (the smaller the number, the harder it is); Hs=6~10 is a soft mattress (the higher the number, the softer).
6. Appearance: The main frame is made of high-grade industrial aluminum profiles with a cross-sectional area of 80*80mm. The connecting parts are painted with sheet metal;
7. Test table material: The base is made of high-grade industrial aluminum profiles, and the table steel plate is glossy painted;
8. Test table height from the ground: 180mm
9. Overall dimensions: 3320*2400*2280mm (L*W*H)
10. Weight: about 1.8 tons
11. Power supply and power: AC2201V 50HZ single phase, about 2KW
12. Maximum test sample range: 2400mm×2400mm×440mm
13.Test Speed: 90mm/min; 100mm/min
14.The program screen can be selected from Simplified Chinese, Traditional Chinese, and English.
15.Soft and hardness display mode: numbers and text.
16.Force values are shown in the SI unit N
17.It can control the force and displacement speed and display the displacement and force curves. (i.e. soft and hard curves)
18.Reports can be exported to Excel tables.
Meeting Standards
GB/T 26706-2011: Upholstered furniture. Palm fiber elastic mattress
QB/T 1952.2-2023:Upholstered furniture Spring soft mattress
Product Description
The mattress rolling durability test is a machine designed to simulate the constant rolling of human beings during sleep. The rolling durability test uses a rolling loading module placed in the horizontal loading part of the mattress to roll at a certain frequency to test the mattress. Reciprocating loading is used to test the mattress's ability to withstand long-term repetitive rolling loads. The mattress edge durability mainly tests the mattress edge durability. The surface softness and hardness test is to test the softness and hardness of the mattress to meet the needs of all types of beds. Pad manufacturer and standard requirements. It is used to determine the quality and service life of mattresses and strictly abides by the requirements of national standards for mechanical testing. Suitable for strong spring mattresses, ordinary spring mattresses, foam mattresses, brown fiber elastic mattresses, etc.
Features
1. This equipment meets 4 test methods: pavement rolling durability test, softness and hardness test, pad surface height test and edge pressing test.
2. Using PLC + touch screen control, it can realize fully automatic test results and control two test modes, fully automatic operation and manual, with one button.
3. Material selection is satisfactory: the main body of the machine adopts standard industrial high-strength aluminum profile frame structure, linear guide rails, servo motors, force sensors, etc.
4. The servo motor is used as the driver to test the height of the test pad. The test is carried out at the speed specified by the standard and the soft and hardness curve is displayed.
5. Roller: Made of wooden material that meets the requirements of dynamic/static friction coefficient (0.2-0.5), using hollow ladder embedded processing, equipped with a counterweight that does not rotate with the roller, and must meet the requirements of rotational inertia (0.5±0.05) kgm2 , and reached the requirement of vertical applied force (1400±7)N.
6. The pavement rolling durability test part adopts a gantry mechanical structure, using large thrust servo motors and high-precision heavy-load linear guides as transmission parts; the structure is stable; the operation is stable and reliable.
7.Positioning of the midpoint of the rolling test, automatically finding the midpoint of the mattress without manual repositioning, PLC starting point positioning.
8. The motor-driven mechanism is used to push the roller to move horizontally and linearly. The roller floats up and down freely with the mattress, and is loaded cyclically in the specified area (the applied force error is ±10%). The loading frequency is (16±2) times. /min.
9. To facilitate the installation and debugging of the machine and specimens, the machine adopts detachable assembly, and the base adopts an aluminum profile frame. Its height should not exceed 180mm, making it easy to move and transport, and more user-friendly.
10. Data protection: test data is automatically saved when the power is off (the data can be automatically saved in the interface after the power is off).
11. Machinery and procedures must have dual protection functions to effectively prevent the failure of the lifting system and actuator due to misoperation and ensure equipment safety. System alarm function, automatic and intelligent alarm after abnormal conditions and test completion.

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