CN106018494A - Compression and resilience testing equipment - Google Patents

Abstract

The invention discloses compression and resilience testing equipment which mainly comprises a jig. A lower testing electrode is arranged in the jig. A pressure sensor is arranged below the lower testing electrode. A rapid clamp is arranged above the jig. An upper testing electrode is connected to the bottom of the rapid clamp. The equipment further comprises a jig driving mechanism for driving the jig to move upwards. A thickness adjuster is connected to the bottom of the jig. The equipment further comprises a controller and a touch display screen. The lower testing electrode, the upper testing electrode, the pressure sensor, the jig driving mechanism, the thickness adjuster and the touch display screen are connected with the controller. The compression, resilience, resilience time, compression resistance, product thickness and the relations thereof of the product can be scientifically, effectively and reasonably evaluated and managed; the upper testing electrode and the lower testing electrode are gold-plated pure copper blocks, so that the testing electrodes nearly do not affect the practical resistance value of materials, and the tested resistance precision under different compression conditions is ensured.

Description

Compression rebound test equipment

technical field

The invention relates to the field of compression and resilience testing of products, in particular to compression resilience testing equipment.

Background technique

For all products with compression and resilience in the market (such as sponges of various materials, foam, thermal silica, etc.), the control of this parameter is mainly focused on the compressibility alone, while for resilience, and compression Resistance, rebound time and other data do not have a set of specific equipment to carry out effective monitoring. They are all completed by some relatively simple and patchwork fixtures. At present, the equipment for testing compressibility in the market is mainly compressive strength testing machine. This kind of testing instrument uses displacement as an important test index, but because the foam material is made of foam, the thickness tolerance of the material itself is too large, and the actual thickness of the material fluctuates greatly, resulting in large fluctuations in displacement. The test method is greatly affected by the original thickness of the material, the compressibility of the material cannot be accurately tested, the test data has a large error, and the test compressibility and compressibility resistance cannot be combined simultaneously, and the state of the material in the actual application process cannot be simulated. Check compressibility and resistance in actual operation.

Contents of the invention

The technical problem to be solved by the invention is to provide a compression rebound testing device for accurately detecting the compressibility, rebound elasticity, rebound time, compression resistance and product thickness of a product.

The technical solution adopted by the present invention to solve the technical problem is: compression rebound test equipment, including a jig, the middle of the jig is hollowed out, a lower test electrode is arranged at the middle hollow of the jig, and a pressure sensor is arranged below the lower test electrode , a thickness regulator is connected below the pressure sensor, a quick fixture is arranged above the fixture, and an upper test electrode and a controller are also included, and the lower test electrode, the upper test electrode, the pressure sensor and the thickness regulator are respectively connected to the controller.

Further, a pressure regulating valve is arranged above the upper test electrode, and the pressure regulating valve is fixed on the quick clamp.

Further, the lower end of the pressure regulating valve is provided with a pressure applying foot, and the pressure applying foot is a rubber structure.

Further, the upper test electrode and the lower test electrode are gold-plated pure copper blocks, and the gold-plated pure copper blocks are manufactured by laser grinding.

Further, the fixture is an FR4 Bakelite board.

Further, it also includes a power switch and a pressure reset switch connected with the controller.

Further, a thickness display table for testing the thickness of the upper test electrode and the lower test electrode is also provided, and the thickness test table is connected with the controller.

The beneficial effects of the present invention are: the present invention can scientifically, effectively and reasonably evaluate and manage the compressibility, resilience, rebound time, compression resistance, product thickness and the relationship between them, and the upper test electrode and the lower test electrode The electrode is a gold-plated pure copper block, so that the test electrode will hardly affect the actual resistance value of the material, ensuring the resistance accuracy of the tested compression conditions. The setting of the pressure regulating valve makes it possible to continuously increase the pressure on the upper test electrode through manual adjustment. , and the presser foot is a rubber structure, which can protect the force-bearing surface of the upper electrode from abrasion while applying pressure, and the fixture uses FR4 bakelite board, because the bakelite board has insulation, does not generate static electricity, wear-resistant, moisture-proof, moisture-proof, Not easy to deform and other characteristics, can carry out frequent compressibility and compressibility resistance tests.

Description of drawings

Figure 1 is a side view of the compression rebound test equipment.

Figure 2 is the front view of the compression rebound test equipment.

The marks in the figure are: quick fixture 1, pressure regulating valve 2, upper test electrode 3, lower test electrode 4, pressure applying foot 5, thickness display table 6, thickness regulator 7.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The compression rebound test equipment as shown in Figures 1 to 2 includes a fixture, the middle of the fixture is hollowed out, a lower test electrode 4 is arranged at the hollow in the middle of the fixture, and a pressure sensor is arranged below the lower test electrode 4. A thickness regulator is connected below the sensor, and the thickness regulator is made according to the principle of screw amplification, that is, the screw rod rotates once in the nut, and the screw rod advances or retreats along the direction of the rotation axis by a distance of one pitch. Therefore, the small distance moving along the axis can be expressed by readings on the circumference. When the horizontal plane of the lower test electrode is at the same level as the plane of the jig, the test distance is displayed as "0mm". The test electrode is connected, a quick fixture 1 is arranged above the fixture, and an upper test electrode 3 is also included, and the test adjustment accuracy is 0.01mm. It also includes a controller and a touch screen, the lower test electrode 4, the upper test electrode 3, and the pressure sensor. , the thickness adjuster 7 and the touch screen are respectively connected to the controller. During the test, the quick fixture 1 is lifted up first, and the thickness adjuster is used to adjust the distance between the lower test electrodes to the specified height (moving down), and the sample is placed on the lower Test the surface of the electrode, then cover the upper test electrode on the sample surface, and press down the quick fixture 1 plate, so that the upper test electrode is parallel to the horizontal plane of the fixture, and the sample will be in the specified thickness state at this time. The upper and lower surfaces of the product to be tested are in contact with the upper test electrode 3 and the lower test electrode 4 respectively, and the controller energizes the upper test electrode and the lower test electrode to detect the resistance value of the product to be tested, and reads the upper test electrode on the thickness regulator 7. The thickness data between the electrode 3 and the lower test electrode 4 and the pressure data of the pressure sensor are used to detect the relationship between the compressed thickness of the product and the compressive resistance, the relationship between the compressive force and the compressed thickness, and the relationship between the compressive force and the compressive resistance. The relationship between the compression area and the compression force. After the product is compressed to a certain thickness during the test, then the thickness regulator is adjusted to reset to the required test thickness. By connecting the upper test electrode 3 and the lower test electrode 4 with the product to be tested The rebound time can be calculated by the contact and departure time, the controller can get the relationship between the rebound time and the rebound resistance, the relationship between the rebound time and the compression force, the above test data can be displayed on the touch screen , the present invention can scientifically, effectively and reasonably evaluate and manage the compressibility, rebound elasticity, rebound time, compression resistance, product thickness and the relationship among them.

On the basis of the above, a pressure regulating valve 2 is arranged above the upper test electrode, and the pressure regulating valve 2 is fixed on the quick fixture 1. The pressure regulating valve 2 is a rotating screw, and the upper test is performed by means of a screw knob. The electrode 3 is pressurized, so that the parallel state between the upper test electrode and the horizontal plane of the jig is more accurate, and the test error is reduced.

In addition, the lower end of the pressure regulating valve 2 is provided with a pressure applying foot 5, the pressure applying foot 5 is a rubber structure, and the pressure applying foot 5 is a rubber structure, which applies pressure to the upper test electrode, so that the upper and lower test electrodes are fully connected to the product. Contact, while applying pressure, it can protect the force-bearing surface of the upper electrode from abrasion.

Further, the upper test electrode 3 and the lower test electrode 4 are gold-plated pure copper blocks, and the gold-plated pure copper blocks are manufactured by laser grinding. Since the resistance of the copper block itself is extremely small, the test electrodes will hardly affect the quality of the material. The actual resistance value, and the purpose of gold plating is to prevent the surface of pure copper from being oxidized by long-term contact with air, which will affect the accuracy of resistance testing. The degree of contact between the test material and the surface of the copper block is more complete, avoiding the instability of the resistance data caused by the poor contact between the test material and the jig, and ensuring the resistance accuracy of the tested compression conditions.

In addition, the jig is FR4 bakelite. Since the bakelite has the characteristics of insulation, no static electricity, wear resistance, moisture resistance, moisture resistance, and not easy to deform, frequent compressibility and compressibility resistance tests can be performed.

In addition, it also includes a power switch and a pressure reset switch connected to the controller. When not in use, the power can be turned off to avoid wasting power. The pressure reset switch can reset the fixture to ensure accurate pressure for each test.

In addition, a thickness display table 6 for testing the thickness of the upper test electrode 3 and the lower test electrode 4 is also provided. The test head of the thickness test table is connected to the lower test electrode, and the measuring surface of the anvil of the table frame is connected to the surface of the jig. The plane is on the same level. When the level of the current test electrode and the plane of the fixture are at the same level, the test distance will be displayed as "0mm". When the test electrode is moved, the thickness display will display the displacement distance synchronously. Thickness distance, the thickness test table is connected to the controller, the thickness display table 6 is a high-precision thickness display table 6, the test accuracy is 0.01mm, and the displacement unit can be switched between millimeters (mm) and inches (inches) arbitrarily , The thickness display table 6 and the thickness regulator 7 are used at the same time to verify each other and ensure the accuracy of the test data.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. compression rebound test equipment, it is characterised in that: include that in the middle of tool, described tool, hollow out is arranged, hollow out in the middle of tool Place is provided with lower test electrode (4), and lower test electrode (4) lower section is provided with pressure transducer, and connecting below pressure transducer has Caliper profiler, tool is provided above quick-speed jigs (1), also includes test electrode (3) and controller, described lower test Electrode (4), upper test electrode (3), pressure transducer and caliper profiler (7) connect with controller respectively.

2. compression rebound test equipment as claimed in claim 1, it is characterised in that: described upper test electrode is provided above pressure Force regulating valve (2), described pressure-regulating valve (2) is fixed on quick-speed jigs (1).

3. compression rebound test equipment as claimed in claim 1, it is characterised in that: described pressure-regulating valve (2) lower end sets Being equipped with pressure and apply foot (5), it is rubber structure that described pressure applies foot (5).

4. compression rebound test equipment as claimed in claim 1, it is characterised in that: described upper test electrode (3) and lower survey Examination electrode (4) is gold-plated fine copper block, and described gold-plated fine copper block is manufactured by laser polishing mode.

5. compression rebound test equipment as claimed in claim 1, it is characterised in that: described tool is FR4 bakelite plate.

6. compression rebound test equipment as claimed in claim 1, it is characterised in that: also include that the power supply being connected with controller is opened Close and pressure reset switch.

7. compression rebound test equipment as claimed in claim 1, it is characterised in that: it is additionally provided with upper test electrode (3) Carry out thickness display table (6) tested, described thickness measuring table and controller with lower test electrode (4) thickness to connect.