Pressure bearing performance detection method

Abstract

The invention discloses a pressure-bearing performance detection method, and relates to the technical field of pressure-bearing performance detection, and the method comprises the following steps: S1, preparing a test rubber material into a strip shape; s2, pasting a plurality of test adhesive tapes on a regular polygonal detection bottom plate; s3, measuring the average thickness H1 of the test rubber strip; s4, release paper is attached to the test adhesive tape, the detection top plate is placed on the release paper, and the pressing block is placed in the middle of the top wall of the detection top plate; s5, placing the test rubber strip in a normal-temperature environment or a high-temperature environment, measuring the average thickness H2 of the test rubber strip after 6 hours, and measuring the average thickness H3 of the test rubber strip after the test rubber strip is placed in the normal-temperature environment for 1 hour; and S6, calculating the thickness reduction rate of the test rubber strip in the two states according to formulas (H1-H2) / H1 and (H1-H3) / H1. The pressure-bearing performance detection can be performed by using the detection bottom plate, the release paper, the detection top plate and the pressing block, so that the detection cost of the pressure-bearing performance detection of the door film adhesive is greatly reduced.

Description

Technical Field

[0001] This application relates to the technical field of pressure resistance detection, and in particular to a pressure resistance detection method. Background Art

[0002] The pressure resistance detection of the door membrane adhesive is carried out by simulating the actual pressure environment, detecting the thickness reduction rate of the colloid and the elastic recovery ability of the colloid after being pressed, and then evaluating its performance in compression performance to ensure that the sealing structure is stable and does not fail during long-term use.

[0003] Currently, for the pressure resistance detection of the door membrane adhesive, standard specimens need to be prepared first to ensure that the colloid is uniform without bubbles and is fully bonded to the substrate. The specimen is placed in a pressure testing machine, and long-term constant pressure is simulated through static loading. During the testing process, temperature environment simulation (such as high temperature or low temperature conditions) needs to be combined. Finally, the elastic recovery and thickness change of the colloid after being pressed are measured and calculated.

[0004] The pressure resistance detection of the door membrane adhesive currently mainly relies on a pressure testing machine to complete, but this equipment has problems such as high purchase cost, high maintenance cost, and complex operation process, which greatly increases the detection cost. Summary of the Invention

[0005] In order to reduce the detection cost of the pressure resistance detection of the door membrane adhesive, this application provides a pressure resistance detection method.

[0006] A pressure resistance detection method provided by this application adopts the following technical solution:

[0007] A pressure resistance detection method includes the following steps: S1: Make the test rubber material into strips; S2: Paste a plurality of test rubber strips on a regular polygon detection bottom plate, the number of test rubber strips is the same as the number of sides of the regular polygon detection bottom plate, and the plurality of test rubber strips enclose a regular polygon; S3: Use a tool to measure the thickness at each side of the detection bottom plate and calculate the average thickness Ha, use a tool to measure the total thickness of each side of the detection bottom plate and the test rubber strip and calculate the average thickness Hb, and the average thickness H1 of the test rubber strip = Hb - Ha; S4: Place a release paper on the test rubber strip, place the detection top plate on the release paper, and place the pressing block in the middle of the top wall of the detection top plate; S5: Place the detection bottom plate, the detection top plate and the pressing block in a normal temperature environment or a high temperature environment, remove the pressing block and the detection top plate after 6 hours, measure the average thickness H2 of the test rubber strip again, and then measure the average thickness H3 of the test rubber strip again after the detection bottom plate is placed in the normal temperature environment for 1 hour; S6: Calculate the thickness reduction rate of the test rubber strip in two states according to the formulas (H1 - H2) / H1 and (H1 - H3) / H1.

[0008] By adopting the above technical solution, when detecting the pressure resistance of the test rubber strip, the detection bottom plate, the release paper, the detection top plate and the pressing block can be used to conduct the pressure resistance detection, thus greatly reducing the detection cost of the pressure resistance detection of the door film rubber strip.

[0009] Preferably, the detection bottom plate is square, the length and width of the detection bottom plate are 120 mm, the thickness of the detection bottom plate is 0.8 mm, and the size of the detection top plate is the same as that of the detection top plate.

[0010] By adopting the above technical solution, the size of the detection top plate is the same as that of the detection bottom plate, so that the detection top plate and the detection bottom plate can be used interchangeably, thus facilitating the staff to conduct the pressure resistance detection.

[0011] Preferably, the thickness of the test rubber strip is 3.5 ± 0.2 mm, the width of the test rubber strip is 5.5 ± 0.2 mm, the length of the test rubber strip is 100 ± 5 mm, and four test rubber strips form a square with a side length of 100 * 100 mm on the detection bottom plate.

[0012] By adopting the above technical solution, the size of the square formed by the four test rubber strips is slightly smaller than the size of the detection bottom plate, so that the test rubber strips are pressed more evenly by the detection top plate.

[0013] Preferably, a groove is opened in the middle of each side of the detection bottom plate, the width of the groove is 1 mm, and the depth of the groove is 5 mm.

[0014] By adopting the above technical solution, the groove is convenient for the staff to measure the thickness of the detection bottom plate near the rubber strip with a detection tool. At the same time, the groove is convenient for the staff to measure the total thickness of the detection bottom plate and the test rubber strip.

[0015] Preferably, a circular mark is engraved in the middle of the top wall of the detection top plate, the diameter of the circular mark is 60 mm, and the pressing block is placed in the circular mark on the detection top plate.

[0016] By adopting the above technical solution, the pressing block is placed in the circular mark of the detection top plate, so that the pressing block is placed at the center position of the detection top plate, thus making the pressure of the pressing block on multiple test rubber strips more uniform.

[0017] Preferably, guide posts are fixedly arranged at the four corners of the detection bottom plate, guide holes are opened at the four corners of the detection top plate, the four guide holes correspond to the four guide posts one by one, the diameter of the guide post is the same as the inner diameter of the guide hole, the top end of the guide post is sharp-angled, and the diameter of the bottom end of the guide post gradually decreases from top to bottom.

[0018] By adopting the above technical solution, when placing the detection top plate, the top corners of the four guide posts on the detection bottom plate are first inserted into the four guide holes of the detection top plate. When the detection top plate moves downward to the middle of the guide posts, the four guide posts pass through the four guide holes in a matching manner, so that the detection top plate can be guided to align the detection top plate with the detection bottom plate, further improving the uniformity of the pressure of the pressing block. When the detection top plate is placed on the test rubber strip, the guide holes move to the smaller-diameter end at the bottom of the guide posts. At this time, the detection top plate does not come into contact with the four guide posts, so that the pressure transmission of the pressing block is more uniform.

[0019] Preferably, a receiving hopper is placed in the middle of the top wall of the detection top plate. A plurality of positioning posts are fixedly arranged on the top wall of the detection top plate. A plurality of positioning grooves are formed in the bottom wall of the receiving hopper. The plurality of positioning posts are inserted into the plurality of positioning grooves, and the pressing block is placed in the receiving hopper.

[0020] By adopting the above technical solution, the pressing block is placed in the receiving hopper, and the positioning posts and the positioning grooves cooperate to position the receiving hopper, so that the receiving hopper is placed more stably on the detection top plate, and further the pressing block is placed more stably on the detection top plate. When the detection bottom plate is carried and moved, the pressing block is not likely to slide on the detection top plate.

[0021] Preferably, the pressing block is an annular block, the diameters of the top ends of the receiving hoppers are the same, and a receiving ring groove is formed on the top wall of the receiving hopper. The pressing block is placed in the receiving ring groove of the receiving hopper.

[0022] By adopting the above technical solution, by placing different numbers of pressing blocks in the receiving ring groove of the receiving hopper, the pressure on the test rubber strip can be adjusted.

[0023] Preferably, the pressing block is a weight. The top end of the receiving hopper is open. The inner diameter of the receiving hopper gradually decreases from top to bottom. A lifting rod is slidably arranged vertically in the middle of the inner cavity of the receiving hopper. An elastic member is arranged in the receiving hopper. The top end of the elastic member abuts against the bottom end of the lifting rod. The top end of the lifting rod is fixedly provided with a lifting plate. A plurality of balls are rotatably embedded at equal intervals along the circumferential direction of the top wall of the lifting plate. The pressing block is placed on the balls of the lifting plate.

[0024] By adopting the above technical solution, when it is necessary to use briquettes of different specifications for detection, the briquettes of different specifications are placed on the ball bearings of the lifting plate. The briquettes drive the lifting rod to move downward through the lifting plate. The lifting rod squeezes the elastic member and causes the elastic member to contract and deform. As the briquettes continue to move downward, if the placement position of the briquettes is not at the center position of the receiving hopper, the bottom of the offset side of the briquettes will first contact the inner wall of the receiving hopper. Since the inner diameter of the receiving hopper gradually decreases, the inner wall of the receiving hopper can push the briquettes to move on the lifting plate towards the middle of the receiving hopper. Eventually, the peripheral side of the bottom wall of the briquettes is in full contact with the inner wall of the receiving hopper, and the centering placement of the briquettes can be completed, facilitating the placement of briquettes of different specifications at the center position of the detection top plate, thereby making the detection result more accurate.

[0025] Preferably, an elastic membrane is provided at the top opening of the receiving hopper. A first pressing ring is detachably and fixedly provided at the top end of the receiving hopper. The first pressing ring and the top end of the receiving hopper clamp the outer peripheral side of the elastic membrane. A second pressing ring is detachably and fixedly provided on the top wall of the lifting plate. The second pressing ring and the top end of the lifting plate clamp the inner peripheral side of the elastic membrane. The second pressing ring is located outside the plurality of ball bearings, and the height of the second pressing ring is less than the height of the ball bearings.

[0026] By adopting the above technical solution, the first pressing ring and the second pressing ring fix the elastic membrane at the top opening of the receiving hopper. When the briquettes drive the lifting plate to move downward, the lifting plate will drive the inner side of the elastic membrane to stretch and deform downward. The elastic membrane first contacts the bottom wall of the briquettes. At this time, the elastic membrane will drive the briquettes to move on the lifting plate towards the middle of the receiving hopper, thereby performing preliminary centering on the briquettes. Subsequently, when the bottom of the briquettes contacts the inner wall of the receiving hopper, the briquettes are fully centered, so that when the deviation position of the briquettes is large, the briquettes can still be centered.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By using the detection bottom plate, the release paper, the detection top plate and the briquettes, the pressure resistance detection of the door film adhesive can be carried out, thus greatly reducing the detection cost of the pressure resistance detection of the door film adhesive;

[0029] 2. With the help of the groove, it is convenient for the staff to use the detection tool to measure the thickness of the detection bottom plate near the rubber strip. At the same time, using the groove is convenient for the staff to measure the total thickness of the detection bottom plate and the test rubber strip;

[0030] 3. Through the circular mark, the briquettes are placed in the circular mark on the detection top plate, so that the briquettes are placed at the center position of the detection top plate, thereby making the pressure of the briquettes on the plurality of test rubber strips more uniform. Description of the Drawings

[0031] Figure 1It is a step block diagram of the pressure resistance detection method in Embodiment 1 of the present application;

[0032] Figure 2 It is a structural schematic diagram of the pressure resistance detection method in Embodiment 1 of the present application;

[0033] Figure 3 It is an exploded view of the structure of the pressure resistance detection method in Embodiment 1 of the present application;

[0034] Figure 4 It is a structural schematic diagram of the pressure resistance detection method in Embodiment 4 of the present application;

[0035] Figure 5 It is a partial structural sectional view of the pressure resistance detection method in Embodiment 4 of the present application;

[0036] Figure 6 It is a structural schematic diagram of the pressure resistance detection method in Embodiment 5 of the present application;

[0037] Figure 7 It is an exploded sectional view of the structure of the pressure resistance detection method in Embodiment 5 of the present application;

[0038] Figure 8 It is a structural schematic diagram of the pressure resistance detection method in Embodiment 6 of the present application;

[0039] Figure 9 It is a partial structural sectional view of the pressure resistance detection method in Embodiment 6 of the present application;

[0040] Figure 10 It is a structural schematic diagram of the pressure resistance detection method in Embodiment 7 of the present application;

[0041] Figure 11 It is a partial structural sectional view of the pressure resistance detection method in Embodiment 7 of the present application.

[0042] Reference numerals: 1, test rubber strip; 2, detection bottom plate; 3, detection top plate; 4, release paper; 5, groove; 6, round mark; 7, guide post; 8, guide hole; 9, receiving hopper; 10, positioning post; 11, positioning groove; 12, lifting rod; 13, elastic member; 14, lifting plate; 15, ball; 16, elastic film; 17, first pressing ring; 18, second pressing ring; 19, receiving ring groove; 20, pressing block 20. Detailed implementation manners

[0043] The following is a further detailed description of the present application in conjunction with the attached Figures 1 - 11 to further illustrate the present application.

[0044] The embodiments of the present application disclose a pressure resistance detection method.

[0045] Embodiment 1:

[0046] Refer to Figure 1 、Figure 2 and Figure 3 , a pressure resistance detection method, comprising the following steps:

[0047] S1: Take an appropriate amount of test rubber compound and place it between the release materials. Put the test rubber compound into an oven and heat it at 80 °C for 10 - 20 min. After taking out the test rubber compound, immediately roll it into a sheet with a thickness of 3.5 ± 0.2 mm using a tablet press, and then cut it into test rubber strips 1 with a width of 5.5 ± 0.2 mm and a length of 100 ± 5 m.

[0048] S2: Tear off the release material on the surface of the test rubber strip 1 and paste the test rubber strip 1 on the regular polygon-shaped detection base plate 2. The detection base plate 2 is a square, with a length and width of 120 mm and a thickness of 0.8 mm. Grooves 5 with a width of 1 mm and a depth of 5 mm are provided in the middle of each side of the detection base plate 2. Four test rubber strips 1 are pasted on the detection base plate 2 and form a square with a side length of 100 * 100 mm, and the joints of every two adjacent test rubber strips 1 do not overlap with each other.

[0049] S3: Use an electronic caliper to measure the thicknesses Ha1, Ha2, Ha3, and Ha4 of each side of the detection base plate 2 near the test rubber strip 1 through the groove 5, and calculate the average thickness Ha = (Ha1 + Ha2 + Ha3 + Ha4) / 4. Use an electronic caliper to measure the total thicknesses Hb1, Hb2, Hb3, and Hb4 of each side of the detection base plate 2 and the test rubber strip 1 through the groove 5, and calculate the average total thickness Hb = (Hb1 + Hb2 + Hb3 + Hb4) / 4. The average thickness H1 of the test rubber strip 1 = Hb - Ha;

[0050] S4: Place the detection base plate 2 horizontally, place a release paper 4 with a size of 120 * 120 mm on the four test rubber strips 1, and then place the detection top plate 3 on the release paper 4. Circular marks 6 with a diameter of 60 mm are engraved in the middle of the front and back sides of the detection top plate 3 and the detection base plate 2. Place the pressing block 20 in the circular mark 6 in the middle of the top wall of the detection top plate 3. The size of the detection top plate 3 is the same as that of the detection base plate 2. Both the detection top plate 3 and the detection base plate 2 are steel plates, so that the detection top plate 3 and the detection base plate 2 can be used interchangeably. The pressing block 20 is a weight, and the cross-section of the pressing block 20 is circular;

[0051] S5: Place the detection base plate 2, the test rubber strip 1, the detection top plate 3, and the pressing block 20 into a normal temperature environment or a high temperature environment. After 6 h, remove the pressing block 20 and the detection top plate 3, and measure the average thickness H2 of the test rubber strip 1 again. Then place the detection base plate 2 and the test rubber strip 1 in a normal temperature environment for 1 h and measure the average thickness H3 of the test rubber strip 1 again.

[0052] S6: Calculate the thickness reduction rates of the test strip 1 in two states according to the formulas (H1 - H2) / H1 and (H1 - H3) / H1.

[0053] The implementation principle of a pressure resistance detection method in an embodiment of the present application is as follows: By using the detection bottom plate 2, the release paper 4, the detection top plate 3 and the pressing block 20, the pressure resistance detection of the test strip 1 can be carried out, thus greatly reducing the detection cost of the pressure resistance detection of the test strip 1.

[0054] Embodiment 2:

[0055] In this embodiment, the test rubber material is an ADCO black rubber block.

[0056] After the test strip 1 is under pressure for 6 hours at 23°C (room temperature), the thickness reduction rate of the test strip 1 is 34.66%. After returning to room temperature for 1 hour, the thickness reduction rate of the test strip 1 is 29.73%.

[0057] After the test strip 1 is under pressure for 6 hours at 50°C (high temperature), the thickness reduction rate of the test strip 1 is 49.8%. After returning to room temperature for 1 hour, the thickness reduction rate of the test strip 1 is 49.8%.

[0058] After the test strip 1 is under pressure for 6 hours at 60°C (high temperature), the thickness reduction rate of the test strip 1 is 53.2%. After returning to room temperature for 1 hour, the thickness reduction rate of the test strip 1 is 53.2%.

[0059] After the test strip 1 is under pressure for 6 hours at 70°C (high temperature), the thickness reduction rate of the test strip 1 is 60.4%. After returning to room temperature for 1 hour, the thickness reduction rate of the test strip 1 is 60.4%.

[0060] After the test strip 1 is under pressure for 6 hours at 80°C (high temperature), the thickness reduction rate of the test strip 1 is 59.1%. After returning to room temperature for 1 hour, the thickness reduction rate of the test strip 1 is 58.8%.

[0061] Embodiment 3:

[0062] In this embodiment, the test rubber material is a 669A - R14 black rubber block.

[0063] After the test strip 1 is under pressure for 6 hours at 23°C (room temperature), the thickness reduction rate of the test strip 1 is 11.56%. After returning to room temperature for 1 hour, the thickness reduction rate of the test strip 1 is 10.51%.

[0064] After the test strip 1 is under pressure for 6 hours at 50°C (high temperature), the thickness reduction rate of the test strip 1 is 24.8%. After returning to room temperature for 1 hour, the thickness reduction rate of the test strip 1 is 21.8%.

[0065] After the test strip 1 is under pressure for 6 hours at 60°C (high temperature), the thickness reduction rate of the test strip 1 is 43.6%. After returning to normal temperature for 1 hour, the thickness reduction rate of the test strip 1 is 43.3%.

[0066] After the test strip 1 is under pressure for 6 hours at 70°C (high temperature), the thickness reduction rate of the test strip 1 is 57.2%. After returning to normal temperature for 1 hour, the thickness reduction rate of the test strip 1 is 56.9%.

[0067] After the test strip 1 is under pressure for 6 hours at 80°C (high temperature), the thickness reduction rate of the test strip 1 is 61.5%. After returning to normal temperature for 1 hour, the thickness reduction rate of the test strip 1 is 61.2%.

[0068] Example 4:

[0069] Refer to Figure 4 and Figure 5 In this embodiment of the present application, the difference from Embodiment 1 is that guide columns 7 are fixedly installed at the four corners of the detection bottom plate 2, and the guide columns 7 are installed along the direction perpendicular to the detection bottom plate 2. The top of the guide column 7 is provided with a sharp angle, the diameter in the middle of the guide column 7 is the same, and the diameter of the bottom of the guide column 7 gradually decreases from top to bottom.

[0070] Guide holes 8 are provided at the four corners of the detection top plate 3 and the release paper 4, and the four guide holes 8 correspond to the four guide columns 7 one by one. When the detection top plate 3 is placed on the detection bottom plate 2, the four guide columns 7 are inserted into the four guide holes 8 to guide the detection top plate 3, so that the detection top plate 3 can be aligned with the detection bottom plate 2 in the vertical direction, and further make the detection top plate 3 transfer the pressure of the pressing block 20 to the four test strips 1 more evenly.

[0071] The implementation principle of Embodiment 4 of the present application is as follows: The sharp angle at the top of the guide column 7 facilitates the insertion of the guide column 7 into the guide hole 8. During the process of the detection top plate 3 sliding down on the four guide columns 7. When the guide hole 8 moves down to the middle of the guide column 7, the four guide columns 7 are adapted to pass through the four guide holes 8, so as to be able to guide the detection top plate 3 and make the detection top plate 3 aligned with the detection bottom plate 2. When the guide hole 8 moves to the smaller-diameter end at the bottom of the guide column 7, the detection top plate 3 does not come into contact with the four guide columns 7, so that the guide column 7 will not interfere with the downward pressure of the detection top plate 3.

[0072] Example 5:

[0073] Refer to Figure 6 and Figure 7, The difference between the embodiment of the present application and Embodiment 1 is that the pressing block 20 is selected as an annular block. A receiving hopper 9 is placed in the middle of the top wall of the detection top plate 3. The upper and lower ends of the receiving hopper 9 are open, and the receiving hopper 9 is provided with a hollow structure. The diameter of the bottom end of the receiving hopper 9 is 60 mm, and the bottom end of the receiving hopper 9 is located within the circular mark 6. Four positioning posts 10 are fixedly installed on the top wall of the detection top plate 3 and within the circular mark 6. Four positioning grooves 11 are formed on the bottom wall of the receiving hopper 9, and the four positioning posts 10 correspond to the four positioning grooves 11 one by one. The diameters of the top ends of the receiving hopper 9 are the same. An accommodating ring groove 19 is formed on the top wall of the receiving hopper 9 with its own center line as the center of the circle. A plurality of pressing blocks 20 are placed in the accommodating ring groove of the receiving hopper 9. At this time, the combined weight of the receiving hopper 9 and the pressing blocks 20 serves as the downward pressing weight of the detection top plate 3.

[0074] The implementation principle of Embodiment 5 of the present application is as follows: By placing different numbers of pressing blocks 20 in the accommodating ring groove 19, the downward pressure of the detection top plate 3 can be adjusted. After the receiving hopper 9 is placed on the detection top plate 3, the four positioning posts 10 are inserted into the four positioning grooves 11, thereby positioning the receiving hopper 9 and further positioning the pressing blocks 20, so that when the detection bottom plate 2 is carried and moved, the pressing blocks 20 are not prone to sliding on the detection top plate 3.

[0075] Embodiment 6:

[0076] Referring to Figure 8 and Figure 9 , The difference between the embodiment of the present application and Embodiment 5 is that the pressing block 20 is selected as a weight. The top end of the receiving hopper 9 is open, the inside and the outer side wall of the receiving hopper 9 are provided with a hollow structure, and the inner diameter of the receiving hopper 9 gradually decreases from top to bottom. A lifting rod 12 is slidably installed in the receiving hopper 9 along the direction of its own center line, and the bottom end of the lifting rod 12 slides within the receiving hopper 9. An elastic member 13 is installed in the middle of the bottom end of the receiving hopper 9, and the top end of the elastic member 13 abuts against the bottom end of the lifting rod 12. In the present application, the elastic member 13 can be selected as a spring. A circular lifting plate 14 is fixedly installed at the top end of the lifting rod 12, and a plurality of balls 15 are rotatably embedded and installed on the top wall of the lifting plate 14 at equal intervals along its circumference.

[0077] The implementation principle of Embodiment 6 of this application is as follows: When it is necessary to use briquettes 20 of different specifications for detection, the briquettes 20 of different specifications are placed on the balls 15 of the lifting plate 14. The briquette 20 drives the lifting rod 12 to move downward through the lifting plate 14. The lifting rod 12 squeezes the elastic member 13 and causes the elastic member 13 to contract and deform. As the briquette 20 continuously moves downward, if the placement position of the briquette 20 is not at the center position of the receiving hopper 9, the bottom of the offset side of the briquette 20 will first contact the inner wall of the receiving hopper 9. Since the inner diameter of the receiving hopper 9 gradually decreases, the inner wall of the receiving hopper 9 can push the briquette 20 on the lifting plate 14 to move towards the middle of the receiving hopper 9. Eventually, the peripheral side of the bottom wall of the briquette 20 is in full contact with the inner wall of the receiving hopper 9, and the centering placement of the briquette 20 can be completed, facilitating the placement of briquettes 20 of different specifications at the center position of the detection top plate 3, thereby making the detection results more accurate.

[0078] Embodiment 7:

[0079] Referring to Figure 10 and Figure 11 In this embodiment, the difference from Embodiment 6 is that an elastic membrane 16 is installed at the opening at the top of the receiving hopper 9, and lubricating oil is applied to the upper surface of the elastic membrane 16. The top of the receiving hopper 9 is detachably and fixedly installed with a first pressing ring 17 through bolts, and the top wall of the lifting plate 14 is detachably and fixedly installed with a second pressing ring 18 through bolts. The first pressing ring 17 cooperates with the top wall of the receiving hopper 9 to clamp and fix the outer peripheral side of the elastic membrane 16, and the second pressing ring 18 cooperates with the top wall of the lifting plate 14 to clamp and fix the inner peripheral side of the elastic membrane 16, and the bolts on the first pressing ring 17 and the second pressing ring 18 both pass through the elastic membrane 16. The height of the top wall of the second pressing ring 18 is less than the height of the top of the ball 15, so that the second pressing ring 18 will not interfere with the rolling of the briquette 20 on the ball 15.

[0080] The implementation principle of Embodiment 7 of this application is as follows: When the briquette 20 drives the lifting plate 14 to move downward, the lifting plate 14 will drive the inner side of the elastic membrane 16 to stretch and deform downward. The elastic membrane 16 first contacts the bottom wall of the briquette 20. At this time, the elastic membrane 16 will drive the briquette 20 on the lifting plate 14 to move towards the middle of the receiving hopper 9, thereby performing preliminary centering on the briquette 20. Subsequently, when the bottom of the briquette 20 contacts the inner wall of the receiving hopper 9, the briquette 20 is fully centered, so that when the deviation position of the briquette 20 is large, the briquette 20 can still be centered.

[0081] The above are only optional embodiments of the present disclosure and are not used to limit the present disclosure. For those skilled in the art, the present disclosure can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A pressure-bearing detection method, characterized in that: It includes the following steps: S1: Make the test rubber compound into strips; S2: Paste a plurality of test rubber strips (1) on the regular polygon detection bottom plate (2). The number of test rubber strips (1) is the same as the number of sides of the regular polygon detection bottom plate (2), and the plurality of test rubber strips (1) enclose a regular polygon; S3: Use a tool to measure the thickness at each side of the detection bottom plate (2) and calculate the average thickness Ha. Use a tool to measure the total thickness of each side of the detection bottom plate (2) and the test rubber strip (1) and calculate the average thickness Hb. The average thickness H1 of the test rubber strip (1) = Hb - Ha; S4: Place a release paper (4) on the test rubber strip (1), and place the detection top plate (3) on the release paper (4); Place the pressing block (20) in the middle of the top wall of the detection top plate (3); S5: Place the detection bottom plate (2), the detection top plate (3) and the pressing block (20) in a normal temperature environment or a high temperature environment. After an interval of 6 h, remove the pressing block (20) and the detection top plate (3), and measure the average thickness H2 of the test rubber strip (1) again. Then, after the detection bottom plate (2) is placed in the normal temperature environment for 1 h, measure the average thickness H3 of the test rubber strip (1) again; S6: Calculate the thickness reduction rates of the test rubber strip (1) in two states according to the formulas (H1 - H2) / H1 and (H1 - H3) / H1.

2. The pressure resistance detection method according to claim 1, characterized in that: The detection bottom plate (2) is square, the length and width of the detection bottom plate (2) are 120 mm, and the thickness of the detection bottom plate (2) is 0.8 mm. The size of the detection top plate (3) is the same as that of the detection top plate (3).

3. The pressure resistance detection method according to claim 2, characterized in that: The thickness of the test rubber strip (1) is 3.5 ± 0.2 mm, the width of the test rubber strip (1) is 5.5 ± 0.2 mm, the length of the test rubber strip (1) is 100 ± 5 mm, and four test rubber strips (1) enclose a square with a side length of 100 * 100 mm on the detection bottom plate (2).

4. A pressure resistance detection method according to claim 3, characterized in that: A groove (5) is formed in the middle of each side of the detection bottom plate (2). The width of the groove (5) is 1 mm, and the depth of the groove (5) is 5 mm.

5. A pressure-bearing detection method according to claim 1, characterized in that: A circular mark (6) is engraved in the middle of the top wall of the detection top plate (3). The diameter of the circular mark (6) is 60 mm, and the pressing block (20) is placed in the circular mark (6) on the detection top plate (3).

6. The pressure resistance detection method according to claim 3, wherein: Guide posts (7) are fixedly arranged at the four corners of the detection bottom plate (2). Guide holes (8) are formed at the four corners of the detection top plate (3). The four guide holes (8) correspond to the four guide posts (7) one by one. The diameter of the guide post (7) is the same as the inner diameter of the guide hole (8). The top end of the guide post (7) is provided with a sharp angle, and the diameter of the bottom end of the guide post (7) gradually decreases from top to bottom.

7. A pressure resistance detection method according to claim 1, characterized in that: A receiving hopper (9) is placed in the middle of the top wall of the detection top plate (3). A plurality of positioning posts (10) are fixedly arranged on the top wall of the detection top plate (3). A plurality of positioning grooves (11) are formed in the bottom wall of the receiving hopper (9). The plurality of positioning posts (10) are inserted into the plurality of positioning grooves (11), and the pressing block (20) is placed in the receiving hopper (9).

8. A pressure-bearing detection method according to claim 7, characterized in that: The pressing block (20) is an annular block, the diameters of the tops of the receiving hoppers (9) are the same, a receiving annular groove (19) is formed in the top wall of the receiving hopper (9), and the pressing block (20) is placed in the receiving annular groove (19) of the receiving hopper (9).

9. A pressure resistance detection method according to claim 7, characterized in that: The pressing block (20) is a weight, the top of the receiving hopper (9) is open, the inner diameter of the receiving hopper (9) gradually decreases from top to bottom, a lifting rod (12) is slidably arranged vertically in the middle of the inner cavity of the receiving hopper (9), an elastic member (13) is arranged in the receiving hopper (9), the top of the elastic member (13) abuts against the bottom end of the lifting rod (12), a lifting plate (14) is fixedly arranged at the top end of the lifting rod (12), a plurality of balls (15) are rotatably embedded at equal intervals along the circumferential direction of the top wall of the lifting plate (14), and the pressing block (20) is placed on the balls (15) of the lifting plate (14).

10. A pressure resistance detection method according to claim 9, characterized in that: An elastic film (16) is arranged at the opening at the top of the receiving hopper (9), a first pressing ring (17) is detachably and fixedly arranged at the top end of the receiving hopper (9), the first pressing ring (17) and the top end of the receiving hopper (9) clamp the outer peripheral side of the elastic film (16), a second pressing ring (18) is detachably and fixedly arranged at the top wall of the lifting plate (14), the second pressing ring (18) and the top end of the lifting plate (14) clamp the inner peripheral side of the elastic film (16), the second pressing ring (18) is located outside the plurality of balls (15), and the height of the second pressing ring (18) is less than the height of the balls (15).

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