Touch screen sponge foam ball drop rebound tester

Sponge/foam plastic ball rebound testing machine -7-inch touch screen

Product name: Sponge foam ball falling rebound tester

Product model：PMLQ-500

Display mode:Touch Screen

manufacturer's standard(GB/T6670-2008 ISO8307 ASTM D3574 ISO8307) Determination of rebound performance of soft foam polymer materials by falling ball method

GBT 10652-2001 Determination of Elasticity of Polymer Porous Elastic Materials

ASTM D3574 Flexible Cellular Materials -- Test Method for Board, Adhesive and Molded Polyurethane foam

Method A, Testing Instruments and Main Parameters:

Sponge ball rebound performance tester, including a transparent tube with an inner diameter of 30mm~60mm, a steel ball with a diameter of 16mm ± 0.5mm, a mass of 16.8g ± 1.5g, released by a magnet or other device. During the descent, there was no rotation and it remained in the center position. The falling height is 500mm ± 0.5mm. The distance between the top of the ball and the surface of the specimen should be 516mm. Therefore, the origin of zero rebound is the diameter distance of the steel ball above the surface of the specimen.

If the pipe is not vertical, it may cause measurement errors, and the steel ball will contact the inner wall of the pipe during the falling or rebounding process, rendering the measurement results invalid. Use a spirit level or similar device to calibrate the hard reference surface to ensure levelness, and place the transparent tube and frame vertically.

Scope and Function of Application:

It is suitable for measuring the springback property of soft polyurethane foam

The instrument automatically calculates the percentage (i.e. rebound rate) of the ratio of the maximum height of the steel ball rebound to the height of the steel ball drop by dropping the steel ball with the diameter and mass specified in the standard on the foam plastic sample at the specified height, and represents the rebound performance of the foam plastic with the rebound rate.

According to the standard testing requirements, each group consists of 3 samples, and each sample is tested three times. The maximum value is taken each time, and the average of the three maximum values is taken to calculate the rebound height and rebound rate. This instrument fully meets the standard requirements, automatically records data and determines the maximum value, calculates the average rebound height and average rebound rate, and can also set numbers and save data for different batches of samples for easy query and management. It can also print the current test data.

This instrument is controlled by Siemens PLC from Germany and operated in Chinese on a 7-inch touch screen. It has the characteristics of easy operation, reliable performance, and high measurement accuracy. It is a reliable sponge resilience testing instrument in China.

Touchscreen sponge foam ball drop rebound testing machine

According to the standard testing requirements, each group consists of 3 samples, and each sample is tested three times. The maximum value is taken each time, and the average of the three maximum values is taken to calculate the rebound height and rebound rate. This instrument fully meets the standard requirements, automatically records data and determines the maximum value, calculates the average rebound height and average rebound rate, and can also set numbers and save data for different batches of samples for easy query and management. It can also print the current test data.

This instrument is controlled by Siemens PLC from Germany and operated in Chinese on a 7-inch touch screen. It has the characteristics of easy operation, reliable performance, and high measurement accuracy. It is a reliable sponge resilience testing instrument in China.

Touchscreen sponge foam ball drop rebound testing machine

Technical parameters:

01. Steel ball drop height: 460mm (national standard)

500mm (American standard)

02. Steel ball diameter: ￠ 16mm

03. Height conduit: transparent organic glass, inner diameter: ￠ 50MM

04. Precision of ball rebound rate:<1%

05. Tested sample size: length * width * height=100 mm × 100 mm × 100 (50) mm

06. Sample quantity: 3 groups

07. Each group of samples intelligently determines the maximum value and saves it

08. Automatically display rebound height and calculate rebound rate

09. Supports two rebound height reading methods: automatic calculation and manual reading

10. Steel ball release method: automatic release, manual release

11. Host size: L/W/H -500 * 400 * 900mm Control box size: L/W/H-

12. Supply voltage: 220V/50HZ

13. Equipment weight:

14. Placement method: desktop, suitable for operation on the desktop

Beijing Crown Test Sponge Drop Ball Rebound Tester

1. According to the conditions specified in Chapter 8, start the test immediately after adjusting the state.

2. Place the sample on the reference surface, adjust the height of the tube, and make the zero rebound 16mm ± 0.5mm above the surface of the sample. Fix the tube to ensure there is light contact between the tube and the sample, without causing any visible pressure.

3. Place the steel ball on the release device, then release the steel ball and record the integer value of the maximum rebound height. During the process of the ball falling or rebounding, if it touches the inner wall of the pipe, the test results will be invalid. The main reason for this situation is that the pipe is not vertical or the surface of the sample is uneven. In order to reduce visual errors, the tester's line of sight should be in a horizontal straight line with the rebound reading scale on the pipe. To demonstrate the accuracy of visual proficiency, a trial test is necessary.

4. Each of the three samples should obtain at least three valid rebound values within 1 minute.

5. The results indicate that 3 results were measured for each sample. If one value exceeds 20% (one-fifth) of the median, conduct two more experiments to determine the median of the five values. Take the median of the three samples as the rebound rate of the sample.

The significant digits of the results displayed by the automatic measuring device are integers.

Touchscreen sponge foam ball drop rebound testing machine

Test Method B

1. According to the conditions specified in Chapter 8, start the test immediately after adjusting the state.

2. Place the sample horizontally on the rebound tester position, and adjust the drop height of the steel ball from the fixed position to the surface of the sample to 460mm.

3. Place the steel ball on the release device, then release the steel ball and record the integer value of the maximum rebound height. During the process of the ball falling or rebounding, if it touches the inner wall of the pipe, the test results will be invalid. The main reason for this situation is that the pipe is not vertical or the surface of the sample is uneven. In order to reduce visual errors, the tester's line of sight should be in a horizontal straight line with the rebound reading scale on the pipe. To demonstrate the accuracy of visual proficiency, a trial test is necessary.

4. Each of the three samples should obtain at least three valid rebound values within 1 minute.

5. The results indicate that 3 results were measured for each sample, and the maximum value was taken from the 3 results. Calculate the average of the three maximum values as the rebound rate of the sample.

5、 The test report should include the following contents:

a) This Chinese standard number;

b) Sample description, including whether it is an open cell material or a closed cell material;

c) Temperature and humidity during state regulation and testing;

d) Whether to use electronic measurement;

e) The method used for measuring rebound rate;

f) Three results for each sample;

g) Material offline time;

h) Test time.

1. The sample should have a parallel and flat surface from top to bottom.

2. The sample area should be 100mm ± 100mm, and the height should meet 50m. If the thickness of the sample is less than 50mm, it should be stacked on top of 50mm, but adhesive cannot be used. For model products, the upper skin should be removed.

Sponge plastic foam ball drop tester

Test Method A:

1. According to the conditions specified in Chapter 8, start the test immediately after adjusting the state.

2. Place the sample on the reference surface, adjust the height of the tube, and make the zero rebound 16mm ± 0.5mm above the surface of the sample. Fix the tube to ensure there is light contact between the tube and the sample, without causing any visible pressure.

3. Place the steel ball on the release device, then release the steel ball and record the integer value of the maximum rebound height. During the process of the ball falling or rebounding, if it touches the inner wall of the pipe, the test results will be invalid. The main reason for this situation is that the pipe is not vertical or the surface of the sample is uneven. In order to reduce visual errors, the tester's line of sight should be in a horizontal straight line with the rebound reading scale on the pipe. To demonstrate the accuracy of visual proficiency, a trial test is necessary.

4. Each of the three samples should obtain at least three valid rebound values within 1 minute.

5. The results indicate that 3 results were measured for each sample. If one value exceeds 20% (one-fifth) of the median, conduct two more experiments to determine the median of the five values. Take the median of the three samples as the rebound rate of the sample.

The significant digits of the results displayed by the automatic measuring device are integers.

Touch screen sponge foam ball drop rebound tester

Note: For soft materials, if the result error is large, thicker samples can be used instead of being limited by a thickness of 50mm. For ultra-low density materials, test results may be problematic due to the sample itself. For multi-layer sheet-like samples, interlayer sliding is prone to occur. Choosing a larger sample area can overcome this problem.

Sample quantity: 3 samples per group for testing. Three samples can be taken from the same sample block or from different samples in the same batch.

State adjustment: After the material is made, it should be left for at least 72 hours before testing. If it can be proven that the difference between the results obtained 16 or 48 hours after production and those obtained 72 hours after production does not exceed ± 10%. Allow samples to be tested 16 or 48 hours after production.

Before the experiment, the sample should be conditioned in any of the following environments for at least 16 hours.

23 ℃± 2 ℃, (50 ± 5)% relative humidity;

27 ℃± 2 ℃, (65 ± 5)% want to adjust humidity;

In the case of conducting experiments 16 hours after production, the state adjustment time may include some or all of the post production placement time.

When conducting quality control testing, the sample can be placed for a short period of time (up to a minimum of 12 hours) after production, and tested according to any of the above environmental regulations using a shorter state adjustment time (up to a minimum of 6 hours).

Beijing Crown Test Sponge Drop Ball Rebound Tester

Verification steps and result representation:

1. Adjustment of preloading state: the open hole soft foam material shall be adjusted in the preloading state before the test. The method is to compress the sample to 75% to 80% of its original thickness at a speed of 0.4mm/s-6mm/s, pre press twice to adjust the pre stress state of the sample, and then allow a recovery period of 10 minutes ± 5 minutes for the sample.

Note: The pre-stressed state adjustment is not applicable to the closed cell soft foam material mentioned in 3.2.

Sponge/foam plastic ball drop rebound tester -7 inch touch screen

Product name: Sponge foam ball falling rebound tester

PRODUCT MODEL：PMLQ-500

Display mode:Touch Screen

manufacturer's standard: (GB/T6670-2008 ISO8307 ASTM D3574 ISO8307) Flexible foam polymeric materials Determination of resilience by ball falling method

GBT 10652-2001 Determination of Elasticity of Polymer Porous Elastic Materials

ASTM D3574 Flexible Cellular Materials -- Test Method for Board, Adhesive and Molded Polyurethane foam

Automatic reading device:

An instrument that can display the rebound height of steel balls electronically, which has been proven to be the same as the result read manually. The height of rebound can be calculated by the speed of steel ball rebound or the time interval between the first and second contact of steel ball D with the foam surface. The installed electronic equipment should display an accuracy of ± 1% (5mm) of the height, and the pipes of this device do not need to be marked.

Method B, Testing Instruments and Main Parameters:

The same equipment as method A is the foam ball falling resilience tester, which has both manual and automatic value reading equipment. The digital display ball rebound instrument has an accuracy of relative error less than 1.5%. The main parameters are the same as method A, and the steel ball diameter is 16.3g (0.5g lighter than the steel ball in 5.1). The important difference parameter is that the drop height of the steel ball is 460mm ± 0.5mm, which makes it impossible to directly convert the rebound values measured by method A and method B.

Touch screen sponge foam ball drop rebound tester

Scope and Function of Application:

It is suitable for measuring the springback property of soft polyurethane foam

This instrument automatically calculates the percentage of the ratio of the maximum height of the steel ball rebound to the height of the steel ball drop (i.e. rebound rate) by allowing steel balls of the specified diameter and mass to fall freely onto a sponge foam plastic sample at a specified height according to standards. The rebound rate is used to represent the rebound performance of the foam plastic.

Sponge foam ball falling rebound tester

Sponge plastic foam ball drop tester

The following terms and definitions apply to this standard.

2.1 Open cell soft foam material: soft foam material with closed cell volume less than 25%.

2.2 Closed cell flexible foam: soft foam material with closed cell volume greater than 25%.

Principle: A steel ball with a certain mass and diameter is dropped from a fixed height onto the surface of the sample. The height of the steel ball's bounce is measured, and the percentage of the ratio of the bounce height to the drop height is calculated.