A rubber material compression set test device

Abstract

The utility model relates to the technical fields of rubber material detection, particularly relate to a kind of rubber material compression permanent deformation test device, it can detect the compression permanent deformation ability of rubber sample block after oil immersion, more close to the actual use environment of rubber product, the credibility of detection result is higher, it is convenient to use, low limitation, high practicality;Including bottom plate, oil tank and three jaw chuck A, oil tank is fixedly installed on the upper end of bottom plate, oil tank is provided with oil cavity, and the upper end of oil tank is set as opening;It further includes lifting mechanism, moving mechanism and pressing mechanism, three jaw chuck A is located above oil tank, three jaw chuck A is installed on lifting mechanism, lifting mechanism is used to lift three jaw chuck A, pressing mechanism is located above three jaw chuck A, pressing mechanism is installed on moving mechanism, and moving mechanism is used to move pressing mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of rubber material testing, and in particular to a rubber material compression set test device. Background Technology

[0002] To ensure the reliability of rubber products during use, compression deformation testing of the raw materials is necessary. In the prior art, utility model patent application number 202021104974.1 discloses a testing device for the compression set of rubber, mainly composed of a steel plate and positioning pins. In use, the rubber product is placed on the steel plate for compression testing. However, this device has the following problems: it can only test the compression set performance of rubber products under normal conditions. Some rubber products, such as rubber sliding seals or rubber seals in some valves, are in prolonged contact with oil during use. Prolonged contact with oil causes oil molecules to penetrate the rubber network, damaging the cross-linked structure, reducing the cross-linking density, intensifying molecular chain slippage, decreasing resilience, and affecting the compression set capability of the rubber product. The aforementioned prior art device is inconvenient for testing the compression set capability of rubber products after contact with oil, resulting in high limitations and inconvenience in its use. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a rubber material compression set test device that can detect the compression set capability of rubber samples after oil immersion, which is closer to the actual use environment of rubber products, has higher reliability of test results, is easy to use, has low limitations, and is highly practical.

[0004] This utility model discloses a rubber material compression set testing device, comprising a base plate, an oil tank, and a three-jaw chuck A. The oil tank is fixedly mounted on the upper part of the base plate and contains an oil cavity. The upper end of the oil tank is open. It also includes a lifting mechanism, a moving mechanism, and a pressing mechanism. The three-jaw chuck A is located above the oil tank and is mounted on the lifting mechanism, which is used to lift and lower the three-jaw chuck A. The pressing mechanism is located above the three-jaw chuck A and is mounted on the moving mechanism, which is used to move the pressing mechanism. When testing the compression set of a rubber sample, the rubber sample is first placed on the upper part of the three-jaw chuck A. The oil cavity in the oil tank contains lubricating oil. The operator then uses a height gauge to measure the height of the rubber sample. The device then measures the compression set of the rubber sample under oil immersion conditions. When the sample is in operation, a lifting mechanism lowers the three-jaw chuck A, causing the rubber sample on chuck A to descend into the oil chamber of the oil tank, immersing it in lubricating oil. After a specified time of immersion, the lifting mechanism raises the rubber sample above the oil tank. A moving mechanism then compresses the rubber sample using a pressing mechanism. The pressing mechanism then disengages from the rubber sample, and the sample rebounds. The height of the rubber sample is then measured, and the difference in height before and after compression indicates its compression set. This method can detect the compression set of rubber samples after oil immersion, more closely reflecting the actual use environment of rubber products. The results are more reliable, easy to use, have fewer limitations, and are highly practical.

[0005] Preferably, the lifting mechanism includes a hydraulic cylinder A and a push rod. The hydraulic cylinder A is fixedly mounted on the base plate, and the push rod is slidably mounted on the oil tank. The lower end of the push rod is connected to the output end of the hydraulic cylinder A, and a three-jaw chuck A is fixedly mounted on the upper end of the push rod. When adjusting the height of the three-jaw chuck A, the hydraulic cylinder A is opened, and the hydraulic cylinder A adjusts the height of the three-jaw chuck A through the push rod, thereby causing the three-jaw chuck A to drive the rubber sample block to adjust its height. This facilitates the adjustment of the height of the rubber sample block.

[0006] Preferably, the moving mechanism includes an electric turntable, a fixed frame, a hydraulic cylinder B, a lifting rod, and a lifting block. The electric turntable is fixedly mounted on the upper end of the base plate, the fixed frame is mounted on the rotating end of the electric turntable, the hydraulic cylinder B is fixedly mounted on the upper end of the fixed frame, the lifting rod is slidably mounted on the upper part of the fixed frame, the upper end of the lifting rod is connected to the output end of the hydraulic cylinder B, the lifting block is fixedly mounted on the lower end of the lifting rod, and the lifting block is slidably mounted on the fixed frame. The pressing mechanism is mounted on the right end of the lifting block. When compressing the rubber sample, the hydraulic cylinder B is opened, and the hydraulic cylinder B lowers the lifting block through the lifting rod. The lifting block drives the pressing mechanism to lower, so that the pressing mechanism contacts the rubber sample. The rubber sample is then compressed by the pressing mechanism, which facilitates the pressing of the rubber sample.

[0007] Preferably, the pressing mechanism includes a lifting plate, a pressure sensor, a connecting rod, and a pressure plate. The lifting plate is fixedly installed on the lifting block, the pressure sensor is fixedly installed at the lower end of the lifting plate, the connecting rod is fixedly installed at the lower end of the pressure sensor, and the pressure plate is fixedly installed at the lower end of the connecting rod. When pressing down on the rubber sample, hydraulic cylinder B is opened. Hydraulic cylinder B causes the lifting block to lower the lifting plate via the lifting rod. The lifting plate causes the connecting rod to lower the pressure plate via the pressure sensor until the pressure plate contacts the rubber sample. The pressure plate presses down on the rubber sample, and the pressure sensor monitors the downward pressure on the rubber sample until the pressure value displayed on the pressure sensor reaches the specified pressure value. Then, the pressure plate is raised to disengage from the rubber sample, causing the rubber sample to rebound. After the rubber sample rebounds, the height of the rubber sample is measured.

[0008] Preferably, it also includes a fixed plate, a tension sensor, a fixed rod, and a three-jaw chuck B. The fixed plate is fixedly installed on the left end of the lifting block, the tension sensor is fixedly installed on the lower end of the fixed plate, the fixed rod is fixedly installed on the lower end of the tension sensor, and the three-jaw chuck B is fixedly installed on the lower end of the fixed rod. This is used when the produced rubber products need to be stretched during use, such as rubber gloves. To test the tensile permanent deformation capacity of the rubber sample, the electric turntable is activated. The turntable rotates the fixed frame, causing the lifting block to rotate the fixed plate above the rubber sample. The lifting block then descends, causing the fixed plate to lower the force sensor, fixing rod, and three-jaw chuck B until they contact the rubber sample. The three-jaw chuck B then clamps and fixes the upper part of the rubber sample. The hydraulic cylinder B then raises the lifting block via the lifting rod, causing the fixed plate to raise the three-jaw chuck B via the force sensor, applying tension to the rubber sample. When the tension value on the force sensor reaches the specified value, the three-jaw chuck B is released, and the height of the rubber sample is measured. This allows for the estimation of the rubber sample's tensile permanent deformation capacity.

[0009] Preferably, the oil tank is equipped with a heater, the output end of which is located inside the oil tank cavity, and a thermometer is installed on the oil tank. When it is necessary to test the rubber sample's permanent deformation capacity at high temperature, the heater is turned on to heat the lubricating oil in the oil tank cavity, raising the lubricating oil to a specified temperature. Then, the rubber sample is immersed in the high-temperature lubricating oil for a period of time before being compressed by the pressure plate. This facilitates the testing of the rubber sample's compression permanent deformation capacity at high temperature.

[0010] Preferably, the surface of the three-jaw chuck A is provided with a high-temperature resistant coating.

[0011] Compared with the prior art, the advantages of this utility model are: it can detect the compression set of rubber samples after oil immersion, which is closer to the actual use environment of rubber products, the test results are more reliable, it is easy to use, has low limitations, and is highly practical. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the first isometric structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the second isometric structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the moving mechanism;

[0015] Figure 4 This is a structural diagram of hydraulic cylinder B, lifting block, and lifting rod, etc.

[0016] Figure 5 This is a schematic diagram of the three-jaw chuck A, push rod, and hydraulic cylinder.

[0017] The following are labels in the attached diagram: 1. Base plate; 2. Oil tank; 3. Three-jaw chuck A; 4. Hydraulic cylinder A; 5. Push rod; 6. Electric turntable; 7. Fixing frame; 8. Hydraulic cylinder B; 9. Lifting rod; 10. Lifting block; 11. Lifting plate; 12. Pressure sensor; 13. Connecting rod; 14. Pressure plate; 15. Fixing plate; 16. Tension sensor; 17. Fixing rod; 18. Three-jaw chuck B; 19. Heater; 20. Rubber sample block. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0019] It should be noted in advance that the rubber sample 20 in this case was obtained by extruding the same rubber material into a special rubber sample mold during the production of rubber products.

[0020] Example 1

[0021] like Figures 1 to 5The rubber material compression set testing device of this utility model includes a base plate 1, an oil tank 2, a three-jaw chuck A3, a lifting mechanism, a moving mechanism, and a pressing mechanism. The oil tank 2 is fixedly installed on the upper end of the base plate 1, and an oil cavity is provided inside the oil tank 2. The upper end of the oil tank 2 is open. The three-jaw chuck A3 is located above the oil tank 2 and is installed on the lifting mechanism, which is used to lift the three-jaw chuck A3. The pressing mechanism is located above the three-jaw chuck A3 and is installed on the moving mechanism, which is used to move the pressing mechanism. When testing the compression set capability of the rubber sample 20, the rubber sample 20 is first placed on the upper end of the three-jaw chuck A3. The oil cavity of the oil tank 2 is filled with lubricating oil. Then, the operator uses a height gauge to measure the height of the rubber sample 20. When it is necessary to test the compression set capability of the rubber sample 20 under oil immersion conditions... The lifting mechanism lowers the three-jaw chuck A3, causing the rubber sample 20 on it to descend into the oil chamber of the oil tank 2, immersing it in lubricating oil. After a specified time of immersion, the lifting mechanism raises the rubber sample 20 above the oil tank 2. Then, a moving mechanism compresses the rubber sample 20 using a pressing mechanism. The pressing mechanism then disengages from the rubber sample 20, and the height of the rubber sample 20 is measured after it rebounds. The difference in height before and after compression indicates the compression set capability of the rubber sample 20. This method can detect the compression set capability of the rubber sample 20 after oil immersion, more closely reflecting the actual use environment of rubber products. The test results are more reliable, convenient to use, have fewer limitations, and are highly practical.

[0022] like Figure 1 and Figure 5 The lifting mechanism includes a hydraulic cylinder A4 and a push rod 5. The hydraulic cylinder A4 is fixedly mounted on the base plate 1, and the push rod 5 is slidably mounted on the oil tank 2. The lower end of the push rod 5 is connected to the output end of the hydraulic cylinder A4, and the three-jaw chuck A3 is fixedly mounted on the upper end of the push rod 5. When adjusting the height of the three-jaw chuck A3, the hydraulic cylinder A4 is opened, and the hydraulic cylinder A4 adjusts the height of the three-jaw chuck A3 through the push rod 5, thereby causing the three-jaw chuck A3 to drive the rubber sample block 20 to adjust its height. This facilitates the adjustment of the height of the rubber sample block 20.

[0023] like Figure 1 , Figure 3 and Figure 4The moving mechanism includes an electric turntable 6, a fixed frame 7, a hydraulic cylinder B8, a lifting rod 9, and a lifting block 10. The electric turntable 6 is fixedly installed on the upper end of the base plate 1. The fixed frame 7 is installed on the rotating end of the electric turntable 6. The hydraulic cylinder B8 is fixedly installed on the upper end of the fixed frame 7. The lifting rod 9 is slidably installed on the upper part of the fixed frame 7. The upper end of the lifting rod 9 is connected to the output end of the hydraulic cylinder B8. The lifting block 10 is fixedly installed on the lower end of the lifting rod 9. The lifting block 10 is slidably installed on the fixed frame 7. The pressing mechanism is installed on the right end of the lifting block 10. When compressing the rubber sample 20, the hydraulic cylinder B8 is opened. The hydraulic cylinder B8 lowers the lifting block 10 through the lifting rod 9. The lifting block 10 drives the pressing mechanism to lower, so that the pressing mechanism contacts the rubber sample 20. The rubber sample 20 can be compressed by the pressing mechanism, which facilitates the pressing of the rubber sample 20.

[0024] like Figure 1 and Figure 4 The pressing mechanism includes a lifting plate 11, a pressure sensor 12, a connecting rod 13, and a pressure plate 14. The lifting plate 11 is fixedly installed on the lifting block 10, the pressure sensor 12 is fixedly installed at the lower end of the lifting plate 11, the connecting rod 13 is fixedly installed at the lower end of the pressure sensor 12, and the pressure plate 14 is fixedly installed at the lower end of the connecting rod 13. When pressing down on the rubber sample block 20, the hydraulic cylinder B8 is opened. The hydraulic cylinder B8 causes the lifting block 10 to drive the lifting plate 11 to descend through the lifting rod 9. The lifting plate 11 causes the connecting rod 13 to drive the pressure plate 14 to descend through the pressure sensor 12 until the pressure plate 14 contacts the rubber sample block 20. The pressure plate 14 presses down on the rubber sample block 20. At the same time, the pressure sensor 12 monitors the downward pressure on the rubber sample block 20. After the pressure value displayed on the pressure sensor 12 reaches the specified pressure value, the pressure plate 14 is raised to disengage from the rubber sample block 20, causing the rubber sample block 20 to rebound. After the rubber sample block 20 rebounds, its height is measured.

[0025] like Figure 1 and Figure 4It also includes a fixed plate 15, a tension sensor 16, a fixed rod 17, and a three-jaw chuck B18. The fixed plate 15 is fixedly installed on the left end of the lifting block 10, the tension sensor 16 is fixedly installed on the lower end of the fixed plate 15, the fixed rod 17 is fixedly installed on the lower end of the tension sensor 16, and the three-jaw chuck B18 is fixedly installed on the lower end of the fixed rod 17. When the produced rubber products need to be stretched during use, such as rubber gloves. To test the tensile permanent deformation capacity of the rubber sample 20, the electric turntable 6 is activated. The turntable 6 rotates the fixed frame 7, causing the lifting block 10 to rotate the fixed plate 15 above the rubber sample 20. The lifting block 10 then descends, causing the fixed plate 15 to lower the force sensor 16, the fixing rod 17, and the three-jaw chuck B18 until they contact the rubber sample 20. The three-jaw chuck B18 then clamps and fixes the upper part of the rubber sample 20. The hydraulic cylinder B8 then raises the lifting block 10 via the lifting rod 9, causing the fixed plate 15 to raise the three-jaw chuck B18 via the force sensor 16 and the fixing rod 17, thus applying tension to the rubber sample 20. When the tension value on the force sensor 16 reaches the specified value, the three-jaw chuck B18 is released, and the height of the rubber sample 20 is measured. This allows for the estimation of the tensile permanent deformation capacity of the rubber sample 20. The surface of the three-jaw chuck A3 is coated with a high-temperature resistant coating.

[0026] Example 2

[0027] Based on Example 1, such as Figure 1 and Figure 2 The oil tank 2 is equipped with a heater 19, the output end of which is located inside the chamber of the oil tank 2. A thermometer is also installed on the oil tank 2. When it is necessary to test the rubber sample 20's ability to undergo permanent deformation at high temperatures, the heater 19 is turned on to heat the lubricating oil in the oil chamber of the oil tank 2, raising the lubricating oil to the specified temperature. Then, the rubber sample 20 is immersed in the high-temperature lubricating oil for a period of time before being compressed by the pressure plate 14. This facilitates the testing of the rubber sample 20's ability to undergo permanent deformation at high temperatures.

[0028] It should be added that: all electrical devices in this case are connected to an external digital controller, which controls and coordinates the operation of each electrical device.

[0029] The electric turntable 6, pressure sensor 12, tension sensor 16, and heater 19 of the rubber material compression permanent deformation testing device of this utility model are all commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A rubber material compression set test apparatus, comprising a base plate (1), an oil tank (2), and a three-jaw chuck A (3), wherein the oil tank (2) is fixedly installed on the upper end of the base plate (1), an oil cavity is provided inside the oil tank (2), and the upper end of the oil tank (2) is configured as an opening; characterized in that, It also includes a lifting mechanism, a moving mechanism and a pressing mechanism. The three-jaw chuck A (3) is located above the oil tank (2). The three-jaw chuck A (3) is installed on the lifting mechanism. The lifting mechanism is used to lift the three-jaw chuck A (3). The pressing mechanism is located above the three-jaw chuck A (3). The pressing mechanism is installed on the moving mechanism. The moving mechanism is used to move the pressing mechanism.

2. The rubber material compression set testing device as described in claim 1, characterized in that, The lifting mechanism includes a hydraulic cylinder A (4) and a push rod (5). The hydraulic cylinder A (4) is fixedly installed on the base plate (1), and the push rod (5) is slidably installed on the oil tank (2). The lower end of the push rod (5) is connected to the output end of the hydraulic cylinder A (4), and the three-jaw chuck A (3) is fixedly installed on the upper end of the push rod (5).

3. The rubber material compression set testing device as described in claim 1, characterized in that, The moving mechanism includes an electric turntable (6), a fixed frame (7), a hydraulic cylinder B (8), a lifting rod (9), and a lifting block (10). The electric turntable (6) is fixedly installed on the upper end of the base plate (1). The fixed frame (7) is installed on the rotating end of the upper part of the electric turntable (6). The hydraulic cylinder B (8) is fixedly installed on the upper end of the fixed frame (7). The lifting rod (9) is slidably installed on the upper part of the fixed frame (7). The upper end of the lifting rod (9) is connected to the output end of the hydraulic cylinder B (8). The lifting block (10) is fixedly installed on the lower end of the lifting rod (9). The lifting block (10) is slidably installed on the fixed frame (7). The pressing mechanism is installed on the right end of the lifting block (10).

4. The rubber material compression set testing device as described in claim 3, characterized in that, The pressing mechanism includes a lifting plate (11), a pressure sensor (12), a connecting rod (13), and a pressure plate (14). The lifting plate (11) is fixedly installed on the lifting block (10), the pressure sensor (12) is fixedly installed at the lower end of the lifting plate (11), the connecting rod (13) is fixedly installed at the lower end of the pressure sensor (12), and the pressure plate (14) is fixedly installed at the lower end of the connecting rod (13).

5. The rubber material compression set testing device as described in claim 3, characterized in that, It also includes a fixing plate (15), a tension sensor (16), a fixing rod (17) and a three-jaw chuck B (18). The fixing plate (15) is fixedly installed on the left end of the lifting block (10), the tension sensor (16) is fixedly installed on the lower end of the fixing plate (15), the fixing rod (17) is fixedly installed on the lower end of the tension sensor (16), and the three-jaw chuck B (18) is fixedly installed on the lower end of the fixing rod (17).

6. The rubber material compression set testing device as described in claim 1, characterized in that, A heater (19) is provided on the oil tank (2), and the output end of the heater (19) is located in the chamber of the oil tank (2). A temperature gauge is provided on the oil tank (2).

7. The rubber material compression set testing device as described in claim 1, characterized in that, The surface of the three-jaw chuck A (3) is provided with a high-temperature resistant coating.

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