A rubber part performance testing device

Abstract

The present invention relates to the field of rubber part performance testing, specifically a rubber part performance testing device, comprising a testing platform and a gantry fixedly mounted on the top of the testing platform, wherein a window is provided on the top of the testing platform, two movable tabletops are mounted on the top of the testing platform for sliding back and forth to close the window, and a pressure test mechanism and a fixing mechanism are mounted on the bottom of the horizontal section of the gantry for sliding left and right. The present invention realizes the linkage and coordination of a pressure test mechanism and a wear test mechanism. After the pressure test mechanism performs a pressure test on the rubber part, a scissor-type lift pushes the wear test mechanism upward to the bottom of the rubber part to perform a wear test on the rubber part. During the wear test, the pressure test mechanism always maintains pressure on different parts of the rubber part, simulating the wear resistance of the rubber part when different parts are subjected to different pressures during use, thereby further improving the effect of the test.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber component performance detection, in particular to a rubber component performance detection device. Background Art

[0002] Rubber parts refer to various products made of natural rubber or synthetic rubber as the main raw materials. The performance testing of rubber parts is an important link to ensure product quality. Through a series of standardized testing methods, the physical, chemical and mechanical properties of rubber materials and their products can be evaluated to ensure that they meet the requirements of use. Among them, the most important performance testing directions of rubber parts are pressure resistance and wear resistance.

[0003] The existing pressure resistance test and wear resistance test are carried out separately. When conducting a pressure resistance test, a sample is generally selected from the rubber part, and then a certain pressure is applied to the entire sample to test the sample's compression resistance and rebound properties; when conducting a wear resistance test, a sample is generally selected from the rubber part, and then the sample is pressed onto a rotating grinding wheel with a certain pressure, and then the sample loss within a certain period of time is measured. The above performance testing method still has the following deficiencies: 1. When conducting a pressure test, since a certain pressure is applied to the entire sample, only the overall compression resistance and rebound performance of the sample can be measured. However, in actual use, the force on each part of the rubber part is not uniform. Applying overall pressure cannot detect the pressure resistance of the rubber part in actual use, which affects the test effect; 2. Since the working environments of different rubber parts are different, the extrusion pressure and extrusion parts of the rubber parts in different working environments are also different. It is difficult to reflect the pressure resistance of the rubber parts under different extrusion pressures and extrusion parts by applying pressure to the entire sample, which affects the test effect; 3. Since the extrusion pressures on different parts of the rubber parts are different, the degree of wear on different parts of the rubber parts is also different. If only a certain pressure is applied to the sample for wear resistance testing, the test results will be relatively single, which affects the test effect. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a rubber part performance testing device, including a testing platform and a gantry fixedly installed on the top of the testing platform, a window is opened on the top of the testing platform, and two movable table surfaces are installed on the top of the testing platform for sliding back and forth to close the window, a pressure testing mechanism and a fixing mechanism are installed on the bottom of the horizontal section of the gantry for sliding left and right, a moving mechanism for driving the pressure testing mechanism and the fixing mechanism to move left and right is installed at the bottom of the gantry, a wear-resistant testing mechanism is installed inside the testing platform, a scissors-type lift for pushing the wear-resistant testing mechanism up and down is installed at the bottom of the inner cavity of the testing platform, and an opening and closing mechanism for driving the movable table surface to open is installed inside the testing platform.

[0005] The pressure test mechanism includes a first pressure plate arranged above the movable table, a first pressure assembly that pushes the first pressure plate to move up and down and an XY-axis moving platform that is symmetrically distributed about the first pressure plate are installed on the bottom of the gantry for sliding left and right, a second pressure assembly is installed on the bottom of the XY-axis moving platform, a shell is fixedly installed on the bottom of the second pressure assembly, a center block is rotatably installed on the front side of the shell, a number of second pressure plates are evenly installed circumferentially on the circumferential surface of the center block, the second pressure plate is located above the first pressure plate, and the area of ​​the second pressure plate gradually increases in the counterclockwise direction, and an adjustment assembly that drives the center block to rotate is installed on the shell.

[0006] The wear resistance testing mechanism includes a support frame that is installed inside the test bench for sliding up and down, an abrasive belt is rotatably installed inside the support frame, a driving component that drives the abrasive belt to rotate circumferentially is installed on the support frame, and the support frame is fixedly installed on the top of the scissor-type lift.

[0007] In one possible implementation, the second pressure assembly includes an electric push rod 1 fixedly mounted on the bottom of the XY-axis moving platform, the bottom of the telescopic section of the electric push rod 1 is fixedly connected to a pressure sensor 1, the bottom of the pressure sensor 1 is fixedly connected to the top of the shell, the second pressure assembly has the same structure as the first pressure assembly, and the bottom of the first pressure assembly is detachably connected to the top of the first pressure plate by a threaded connection.

[0008] In one possible implementation, the adjustment assembly includes a center rod rotatably mounted inside the shell and located above the center block, a dial plate is coaxially fixedly mounted on the outside of the center rod, a groove wheel coaxially connected to the center block is rotatably mounted inside the shell, the dial wheel cooperates with the groove wheel, and a drive assembly 2 for driving the center rod to rotate unidirectionally is installed in the shell.

[0009] In one possible implementation, the drive component 2 includes a first gear rotatably mounted on the outside of the center rod and located in front of the dial, a ratchet and pawl mechanism is installed between the center rod and the first gear, a first rack is installed on the top of the shell for sliding up and down, the first rack is engaged with the first gear, and a first return spring is fixedly connected between the top of the first rack and the top of the shell.

[0010] In one possible implementation, the moving mechanism includes a slide groove opened at the bottom of the gantry, a lead screw is rotatably installed inside the slide groove, a slider is connected to the external thread of the lead screw, and the slider is installed inside the slide groove for sliding left and right, and the first pressure assembly and the top of the XY-axis moving platform are fixedly connected to the slider.

[0011] In one possible implementation, the fixing mechanism includes a fixing ring fixedly connected to the bottom of the slider through a support rod, the fixing ring is located above the movable table, the first pressure plate is located on the inner side of the fixing ring, and clamping assemblies are installed on both the front and rear sides of the fixing ring.

[0012] In one possible implementation, the clamping assembly includes a threaded rod threadedly connected to a fixing ring, an arc-shaped clamping block is rotatably installed on one end of the threaded rod near the center of the fixing ring, the interior of the fixing ring slides back and forth and passes through a guide rod symmetrically distributed about the threaded rod, and the end of the guide rod near the center of the fixing ring is fixedly connected to the arc-shaped clamping block.

[0013] In one possible implementation, the drive assembly includes two drive rollers rotatably mounted inside a support frame and symmetrically distributed front and back, the sanding belt transmission is connected between the outsides of the front and rear drive rollers, the inner side of the support frame is fixedly connected to two support plates that respectively support the upper and lower horizontal sections of the sanding belt, a drive motor that drives the rear drive roller is installed on the left side of the support frame, and the rear drive roller and the screw are connected through a pulley assembly.

[0014] In one possible implementation, the opening and closing mechanism includes a second rack symmetrically fixedly installed on the front and rear sides of the support frame, a crossbeam symmetrically distributed about the front and rear of the support frame is fixedly installed inside the detection platform, a second gear is rotatably installed on the side of the crossbeam close to the support frame, the second gear is meshed with the corresponding second rack, a third gear is rotatably installed on the inner top wall of the detection platform, the third gear is located below the movable table top and symmetrically distributed front and back, the third gear is connected to the corresponding second gear through a second pulley assembly, and a third rack is fixedly connected to the bottom of the movable table top, and the third rack is meshed with the corresponding third gear.

[0015] In one possible implementation, a tensioning mechanism for adjusting the belt tensioning degree of pulley assembly 1 is installed inside the vertical section on the right side of the gantry, and the tensioning mechanism includes a mounting plate fixedly mounted on the inner wall of the vertical section on the right side of the gantry, the rear side of the mounting plate is fixedly connected to roller frame 1, the rear side of the roller frame 1 is rotatably mounted with a fixed wheel, the rear side of the mounting plate is fixedly connected to an elastic telescopic rod symmetrically distributed above and below about roller frame 1, the rear side of the elastic telescopic rod is fixedly connected to roller frame 2, the rear side of the roller frame 2 is rotatably mounted with a movable wheel, and the belt in pulley assembly 1 cooperates with the movable wheel and the fixed wheel respectively.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention performs a pressure resistance test on a rubber part through the cooperation of a first pressure plate and a second pressure plate. After the first pressure plate performs a comprehensive downward pressure test on the rubber part, the two second pressure plates at the front and rear can independently apply additional pressure to local positions of the rubber part, simulating the additional pressure applied to the front and rear positions of the rubber part during use. At the same time, the XY-axis moving platform can also drive the corresponding second pressure plate to move forward, backward, left and right, so as to realize pressure resistance testing on different front and rear parts of the rubber part, simulating the different force points at the front and rear positions of the rubber part during use, and improving the effect of pressure resistance testing.

[0017] 2. The present invention provides a plurality of second pressure plates of different areas. When performing a pressure test on a rubber part, the housing can be driven upward by the electric push rod 1, so that the fixed section of the electric push rod 1 pushes and drives the adjustment component, and the adjustment component drives the central block to rotate at a fixed angle, thereby switching the second pressure plates of different sizes to perform pressure testing on the rubber part, simulating the pressure resistance of the rubber part under different pressure areas, and further improving the test effect.

[0018] 3. The present invention realizes the linkage and coordination of the pressure-resistant testing mechanism and the wear-resistant testing mechanism. After the pressure-resistant testing mechanism performs a pressure test on the rubber part, the scissor-type lift pushes the wear-resistant testing mechanism upward to the bottom of the rubber part to perform a wear test on the rubber part. During the wear test, the pressure-resistant testing mechanism always maintains pressure on different parts of the rubber part, simulating the wear resistance of the rubber part when different parts before and after are subjected to different pressures during use, thereby further improving the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the moving mechanism of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the first pressing plate of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the second pressing plate of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present invention.

[0024] Figure 6 It is a partial cross-sectional view of the adjustment component of the present invention.

[0025] Figure 7 It is a front cross-sectional view of the first gear of the present invention.

[0026] Figure 8It is a right side sectional view of the detection platform of the present invention.

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the wear-resistant testing mechanism of the present invention.

[0028] Figure 10 It is a partial cross-sectional view of the gantry of the present invention.

[0029] Figure 11 It is a schematic diagram of the three-dimensional structure of the tensioning mechanism of the present invention.

[0030] In the figure: 1. Test table; 11. Gantry; 12. Movable table; 13. Crossbeam; 2. Pressure test mechanism; 21. First pressure plate; 22. First pressure assembly; 23. XY-axis moving platform; 24. Second pressure assembly; 241. Electric push rod 1; 242. Pressure sensor 1; 25. Housing; 26. Center block; 27. Second pressure plate; 28. Adjustment assembly; 281. Center rod; 282. Toggle plate; 283. Grooved wheel; 284. First gear; 285. Ratchet and pawl mechanism; 286. First rack; 287. First return spring; 3. Fixing mechanism; 31. Fixed ring; 32. Threaded rod; 33. Arc clamp; 34. Guide rod; 4. Moving mechanism; 41. Slide; 42. Lead screw; 43. Slider; 5. Wear-resistant testing mechanism; 51. Support frame; 52. Sanding belt; 53. Drive roller; 54. Support plate; 55. Drive motor; 6. Scissor lift; 7. Opening and closing mechanism; 71. Second rack; 72. Second gear; 73. Third gear; 74. Third rack; 8. Tensioning mechanism; 81. Mounting plate; 82. Roller frame 1; 83. Fixed wheel; 84. Elastic telescopic rod; 85. Roller frame 2; 86. Movable wheel. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described below, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] See also Figure 1 、 Figure 2 and Figure 8A rubber part performance testing device includes a testing platform 1 and a gantry 11 fixedly installed on the top of the testing platform 1. A window is opened on the top of the testing platform 1. Two movable tabletops 12 for closing the window are installed on the top of the testing platform 1 for sliding back and forth. The two movable tabletops 12 are symmetrically distributed front and back. A pressure testing mechanism 2 and a fixing mechanism 3 are installed for sliding left and right at the bottom of the horizontal section of the gantry 11. A moving mechanism 4 for driving the pressure testing mechanism 2 and the fixing mechanism 3 to move left and right is installed at the bottom of the gantry 11. A wear-resistant testing mechanism 5 is installed inside the testing platform 1. A scissor-type lift 6 for pushing the wear-resistant testing mechanism 5 up and down is installed at the bottom of the inner cavity of the testing platform 1. An opening and closing mechanism 7 for driving the movable tabletop 12 to open is installed inside the testing platform 1.

[0033] See also Figure 2 、 Figure 3 and Figure 4 The pressure test mechanism 2 includes a first pressure plate 21 disposed above the movable table 12. A first pressure assembly 22 that pushes the first pressure plate 21 up and down is installed on the bottom of the gantry 11, which slides left and right. The first pressure assembly 22 and an XY-axis movable platform 23 are symmetrically distributed about the first pressure plate 21. A second pressure assembly 24 is installed at the bottom of the XY-axis movable platform 23. A housing 25 is fixedly installed at the bottom of the second pressure assembly 24. A center block 26 is rotatably installed on the front side of the housing 25. A number of second pressure plates 27 are evenly installed circumferentially on the circumferential surface of the center block 26. The second pressure plates 27 are located above the first pressure plate 21. The area of ​​the second pressure plates 27 gradually increases in the counterclockwise direction. An adjustment assembly 28 that drives the center block 26 to rotate is installed on the housing 25. It should be noted that the XY-axis movable platform 23 belongs to the existing technology. The x-axis is a horizontal moving axis that realizes left and right movement. The y-axis is installed on the x-axis to realize front and back movement. The second pressure assembly 24 is driven by the x-axis movable platform 23 to move along the x-axis and along the y-axis.

[0034] When performing a pressure test on a rubber part, the rubber part is placed on the movable table 12 below the first pressure plate 21, and the initial height of the rubber part is recorded. Then, the first pressure-applying assembly 22 pushes the first pressure plate 21 downward so that the first pressure plate 21 fully compresses the rubber part. The height of the rubber part when compressed is recorded to test the pressure resistance performance of the rubber part. Then, the pressure on the rubber part is released, and the height of the rubber part after rebound is recorded to test the rebound performance of the rubber part.

[0035] Then, the first pressure assembly 22 pushes the first pressure plate 21 downward again to fully compress the rubber part. Then, the second pressure assembly 24 pushes the shell 25 downward, so that the two second pressure plates 27 apply additional pressure to the front and rear sides of the top of the first pressure plate 21, respectively, to simulate the additional pressure applied to the front and rear positions of the rubber part during use, and test the pressure resistance performance of the rubber part when the front and rear positions are subjected to additional pressure; then, the second pressure assembly 24 is driven to move forward, backward, left and right by the XY-axis moving platform 23, so that the second pressure plates 27 can apply additional pressure to different front and rear parts of the rubber part, and test the pressure resistance performance of different front and rear parts of the rubber part.

[0036] See also Figure 8 and Figure 9 The wear-resistant testing mechanism 5 includes a support frame 51 that is slidably mounted inside the test platform 1. An abrasive belt 52 is rotatably mounted inside the support frame 51. A drive assembly 1 for driving the abrasive belt 52 to rotate circumferentially is mounted on the support frame 51. The support frame 51 is fixedly mounted on the top of a scissor-type lift 6. It should be noted that the scissor-type lift 6 is a prior art and can be raised and lowered, thereby driving the support frame 51 to move upward or downward.

[0037] The rubber part on the table 12 is fixed by the fixing mechanism 3, and the support frame 51 is pushed upward by the scissor-type lift 6. During the upward movement of the support frame 51, the opening and closing mechanism 7 is driven to open the table 12, so that the sanding belt 52 moves up from the window to contact the bottom of the rubber part. Then, the driving component drives the sanding belt 52 to rotate circumferentially, so that the sanding belt 52 can grind the bottom of the rubber part. The wear resistance of the rubber part is tested according to the degree of wear of the rubber part per unit time.

[0038] See also Figure 3 and Figure 4 The second pressure component 24 includes an electric push rod 241 fixedly installed at the bottom of the XY-axis moving platform 23. The bottom of the telescopic section of the electric push rod 241 is fixedly connected to a pressure sensor 242. The bottom of the pressure sensor 242 is fixedly connected to the top of the shell 25. The second pressure component 24 has the same structure as the first pressure component 22. The bottom of the first pressure component 22 is detachably connected to the top of the first pressure plate 21 by a threaded connection. There are multiple first pressure plates 21 with different sizes and specifications.

[0039] Electric push rod 1 241 pushes pressure sensor 1 242 downward, which then pushes housing 25 downward, allowing second pressure plate 27 to apply additional pressure to the rubber member. Similarly, first pressure assembly 22 pushes first pressure plate 21 downward, allowing first pressure plate 21 to fully compress the rubber member. By using a detachable connection to first pressure plate 21, it is possible to replace first pressure plate 21 to match the size of the rubber member being tested. It should be noted that pressure sensor 1 242 is conventional technology and can measure the pressure during the application of pressure by electric push rod 1 241. Pressure sensor 1 242 then transmits the pressure data to an external computer for display.

[0040] See also Figure 4 、 Figure 6 and Figure 7 The adjustment component 28 includes a center rod 281 rotatably mounted inside the shell 25 and located above the center block 26. A dial 282 is coaxially fixedly mounted on the outside of the center rod 281. A groove wheel 283 coaxially connected to the center block 26 is rotatably mounted inside the shell 25. The dial 282 cooperates with the groove wheel 283. A driving component 2 for driving the center rod 281 to rotate in one direction is installed in the shell 25.

[0041] See also Figure 6 and Figure 7 The second driving component includes a first gear 284 rotatably mounted on the outside of the center rod 281 and located in front of the dial 282. A ratchet and pawl mechanism 285 is installed between the center rod 281 and the first gear 284. A first rack 286 is installed on the top of the shell 25 for sliding up and down. The first rack 286 is engaged with the first gear 284. A first return spring 287 is fixedly connected between the top of the first rack 286 and the top of the shell 25.

[0042] By providing a plurality of second pressure plates 27 of different sizes, the pressure resistance test of different areas can be performed on the rubber member, simulating the pressure resistance of the rubber member when it is compressed by different areas, thereby improving the effect of the pressure resistance test.

[0043] When a different second pressure plate 27 is to be switched, the housing 25 is driven upward by the electric push rod 241, so that the bottom of the fixed section of the electric push rod 241 squeezes the top of the first rack 286, so that the first rack 286 moves toward the inside of the housing 25 and compresses the first return spring 287. The first rack 286 is used to drive the first gear 284 to rotate counterclockwise, and then the first gear 284 drives the center rod 281 and the dial 282 to rotate through the ratchet and pawl mechanism 285. Then the dial 282 drives the groove wheel 283 and the center block 26 to rotate counterclockwise ninety degrees, thereby switching second pressure plates 27 of different sizes.

[0044] After switching the second pressure plate 27, the electric push rod 241 pushes the shell 25 to move downward. At this time, the rebound force of the first return spring 287 is used to push the first rack 286 to move upward and out of the interior of the shell 25. The first rack 286 will drive the first gear 284 to rotate clockwise during the upward movement. Since the ratchet pawl mechanism 285 can only transmit in one direction, the first gear 284 will not drive the center rod 281 to rotate during the clockwise rotation, thereby preventing the center block 26 from rotating in the opposite direction with the second pressure plate 27.

[0045] See also Figure 2 The moving mechanism 4 includes a slide groove 41 opened at the bottom of the gantry 11, a lead screw 42 is rotatably installed inside the slide groove 41, and a slider 43 is connected to the external thread of the lead screw 42. The slider 43 is installed inside the slide groove 41 for sliding left and right. The top of the first pressure component 22 and the XY-axis moving platform 23 are fixedly connected to the slider 43.

[0046] See also Figure 2 and Figure 5 The fixing mechanism 3 includes a fixing ring 31 fixedly connected to the bottom of the slider 43 through a support rod. The fixing ring 31 is located above the movable table 12. The first pressure plate 21 is located on the inner side of the fixing ring 31. Clamping components are installed on both the front and rear sides of the fixing ring 31.

[0047] See also Figure 5 The clamping assembly includes a threaded rod 32 threadedly connected to the fixing ring 31, and an arc-shaped clamping block 33 is rotatably installed on one end of the threaded rod 32 near the center of the fixing ring 31. The interior of the fixing ring 31 slides back and forth and penetrates a guide rod 34 symmetrically distributed about the threaded rod 32. The end of the guide rod 34 near the center of the fixing ring 31 is fixedly connected to the arc-shaped clamping block 33.

[0048] A certain distance is reserved between the bottom of the fixing ring 31 and the top of the movable table 12 to prevent the bottom of the rubber part at the bottom of the fixing ring 31 from being flush with each other, thereby preventing the bottom of the fixing ring 31 from being worn. After the rubber part is placed under the first pressure plate 21, the arc-shaped clamping blocks 33 are distributed on the front and rear sides of the rubber part. Before performing the wear test, the arc-shaped clamping blocks 33 are pushed toward the center of the fixing ring 31 by rotating the threaded rod 32, so that the arc-shaped clamping blocks 33 can be clamped on the front and rear sides of the rubber part to prevent the rubber part from shifting during the subsequent wear test.

[0049] See also Figure 2 、 Figure 8 、 Figure 9 and Figure 10The driving assembly 1 includes two driving rollers 53 rotatably mounted inside the support frame 51 and symmetrically distributed front and back. The sanding belt 52 is transmission-connected between the outsides of the front and rear driving rollers 53. The inner side of the support frame 51 is fixedly connected with two support plates 54 that respectively support the upper and lower horizontal sections of the sanding belt 52. A driving motor 55 that drives the rear driving roller 53 is installed on the left side of the support frame 51. The rear driving roller 53 and the lead screw 42 are transmission-connected through a pulley assembly 1.

[0050] The driving motor 55 drives the rear driving roller 53 to rotate, and then the rear driving roller 53 drives the sanding belt 52 to rotate circumferentially, so that the sanding belt 52 performs a wear resistance test on the bottom of the rubber part. During the circumferential rotation of the sanding belt 52, the front driving roller 53 is driven to rotate synchronously. The support plate 54 can support the horizontal section of the sanding belt 52 so that the top of the sanding belt 52 always remains in a horizontal state, which is conducive to the close fit between the sanding belt 52 and the bottom of the rubber part, thereby improving the effect of the wear resistance test.

[0051] When the driving roller 53 on the rear side rotates, it can drive the screw 42 to rotate through the pulley assembly, and then the screw 42 drives the slider 43 to move to the right, so that the slider 43 drives the pressure test mechanism 2, the fixing mechanism 3 and the rubber part to move to the right, so that the rubber part continues to move to the right when rubbed by the sand belt 52, and can continuously change the contact position between the rubber part and the sand belt 52, thereby avoiding the debris generated on the surface of the sand belt 52 from having an adverse effect on the friction of the subsequent rubber parts.

[0052] See also Figure 8 and Figure 10 The opening and closing mechanism 7 includes a second rack 71 symmetrically fixedly installed on the front and rear sides of the support frame 51. A crossbeam 13 symmetrically distributed about the front and rear of the support frame 51 is fixedly installed inside the testing platform 1. A second gear 72 is rotatably installed on the side of the crossbeam 13 close to the support frame 51. The second gear 72 is engaged with the corresponding second rack 71. A third gear 73 symmetrically distributed front and rear is rotatably installed on the inner top wall of the testing platform 1 and is located below the movable table 12. The third gear 73 is connected to the corresponding second gear 72 through a second pulley assembly. A third rack 74 is fixedly connected to the bottom of the movable table 12, and the third rack 74 is engaged with the corresponding third gear 73.

[0053] When the scissor lift 6 pushes the support frame 51 to move upward, the support frame 51 drives the second rack 71 to move upward, and the second rack 71 drives the second gear 72 to rotate. Then, the second gear 72 drives the third gear 73 to rotate through the pulley assembly 2, and then the third gear 73 drives the corresponding third rack 74 and the movable table 12 to move away from the testing table 1, opening the window on the top of the testing table 1, so that the sanding belt 52 can rush through the window and move upward to contact the bottom of the rubber part.

[0054] See also Figure 10 and Figure 11 A tensioning mechanism 8 for adjusting the tension of the belt in the pulley assembly 1 is installed inside the vertical section on the right side of the gantry 11. The tensioning mechanism 8 includes a mounting plate 81 fixedly mounted on the inner wall of the vertical section on the right side of the gantry 11. The rear side of the mounting plate 81 is fixedly connected to a roller frame 1 82. A fixed wheel 83 is rotatably mounted on the rear side of the roller frame 1 82. The rear side of the mounting plate 81 is fixedly connected to an elastic telescopic rod 84 symmetrically distributed above and below the roller frame 1 82. The rear side of the elastic telescopic rod 84 is fixedly connected to a roller frame 2 85. A movable wheel 86 is rotatably mounted on the rear side of the roller frame 2 85. The belt in the pulley assembly 1 cooperates with the movable wheel 86 and the fixed wheel 83 respectively.

[0055] During the upward movement of the support frame 51, the driving roller 53 and the screw 42 approach each other, causing the belt in the pulley assembly 1 to gradually loosen. At this time, the corresponding movable wheel 86 is pushed backward by the rebound force of the elastic telescopic rod 84, so that the distance between the movable wheel 86 and the fixed wheel 83 becomes larger, thereby adaptively tensioning the belt in the pulley assembly 1, avoiding the belt in the pulley assembly 1 from becoming loose, and ensuring normal transmission between the driving roller 53 and the screw 42.

[0056] See also Figure 1 and Figure 11 In specific use, step 1, in the initial state, the movable table 12 is in a closed state, the slider 43 is located at the leftmost end of the slide groove 41, and a first pressure plate 21 of appropriate size is selected according to the size of the rubber piece to be tested and threadedly installed to the bottom of the first pressure assembly 22. Then, the rubber piece is placed on the movable table 12 directly below the first pressure plate 21, and the height of the rubber piece in the initial state is recorded.

[0057] Step 2: Push the first pressure plate 21 downward through the first pressure assembly 22 so that the first pressure plate 21 fully compresses the rubber member. The pressure sensor 242 in the first pressure assembly 22 records the pressure applied by the first pressure assembly 22, and then records the height of the rubber member after being compressed to test the pressure resistance of the rubber member. Then, the first pressure assembly 22 drives the first pressure plate 21 upward to release the pressure on the rubber member, and then records the height of the rubber member after rebounding to test the resilience of the rubber member.

[0058] Step 3: Push the first pressure plate 21 downward through the first pressure-applying assembly 22 to fully compress the rubber part again and maintain the pressure consistent with the last compression. Then, push the corresponding housing 25 downward through the electric push rod 241 to press the second pressure plate 27 on the first pressure plate 21, and apply additional pressure to the front and rear positions of the rubber part at the bottom of the first pressure plate 21. Then, record the height of the front and rear positions of the rubber part when compressed, and test the pressure resistance of the rubber part under the additional pressure state.

[0059] Step 4: Use the electric push rod 241 to drive the housing 25 to move upward a small distance so that the second pressure plate 27 no longer applies pressure to the rubber part. Then, the XY-axis moving platform 23 drives the electric push rod 241 to move forward, backward, left and right to adjust the pressure position of the second pressure plate 27. Then, the electric push rod 241 pushes the housing 25 downward again, so that the second pressure plate 27 applies pressure to different front and rear parts of the rubber part to test the pressure resistance performance of different front and rear parts of the rubber part.

[0060] The first gear 284 is pushed counterclockwise by the first rack 286, and then the first gear 284 is driven by the ratchet pawl mechanism 285 to drive the center rod 281 to rotate. Then, the center rod 281 drives the groove wheel 283 to rotate intermittently by ninety degrees through the dial 282, and then the groove wheel 283 drives the center block 26 and the second pressure plate 27 to rotate, switching to the next second pressure plate 27 of a different size. After the switching is completed, the electric push rod 241 pushes the housing 25 downward, so that the second pressure plates 27 of different sizes perform a pressure test on the rubber parts. When the housing 25 moves downward, the rebound force of the first return spring 287 is used to push the first rack 286 to move upward and reset.

[0061] Step 6. After the pressure test is completed, the first pressure assembly 22 and the second pressure assembly 24 respectively drive the first pressure plate 21 and the shell 25 to move upward a short distance to release the pressure on the rubber part, and then replace a new rubber part. Then, the threaded rod 32 is rotated to push the arc clamping block 33 to move inward, so that the arc clamping block 33 fixes the rubber part, and then the support frame 51 is pushed upward by the scissor-type lift 6. In the process of the support frame 51 moving upward, the second rack 71 is used to drive the second gear 72 to rotate, and then the second gear 72 drives the third gear 73 to rotate through the pulley assembly 2, so that the third gear 73 drives the corresponding third rack 74 and the movable table 12 to move away from the center of the test platform 1, thereby opening the window on the top of the test platform 1, and finally the top of the support frame 51 moves to the window, so that the top of the sanding belt 52 conflicts with the bottom of the rubber part.

[0062] Step 7. Push the first pressure plate 21 downward to press on the rubber part through the first pressure component 22, and then drive the motor 55 to drive the driving roller 53 to rotate. The driving roller 53 drives the sanding belt 52 to rotate circumferentially, so that the sanding belt 52 wears the bottom of the rubber part. During the circumferential rotation of the sanding belt 52, the rear driving roller 53 drives the screw 42 to rotate through the pulley assembly 1, and then drives the slider 43 to move to the right through the screw 42, so that the slider 43 drives the fixing ring 31 and the rubber part to move to the right until the rubber part moves to the right end of the sanding belt 52. Then, the first pressure component 22 drives the first pressure plate 21 to move upward, and then rotates the threaded rod 32 in the opposite direction to loosen the fixation of the rubber part. Then, remove the worn rubber part, record the height of the worn rubber part, and test the wear resistance of the rubber part when it is under pressure as a whole.

[0063] Step 8. Drive the driving motor 55 to drive the driving roller 53 to rotate in the opposite direction, and then drive the driving roller 53 to drive the lead screw 42 to rotate in the opposite direction through the pulley assembly 1, so that the slider 43 moves to the left to the initial position. In the process of the driving roller 53 driving the sanding belt 52 to rotate in the opposite direction, use a brush to clean the debris on the surface of the sanding belt 52. When the slider 43 moves to the initial position, place the new rubber part on the sanding belt 52 directly below the first pressure plate 21, and then repeat the process in step 6 to fix the new rubber part by the fixing mechanism 3. After that, the first pressure assembly 22 and the second pressure assembly 24 respectively drive the first pressure plate 21 and the shell 25 to move downward, so that the first pressure plate 21 and the second pressure plate 27 press the rubber part on the sanding belt 52, and repeat step 7 to test the wear resistance of the rubber part when subjected to different pressures.

[0064] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0065] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rubber part performance testing device, comprising a testing platform and a gantry fixedly mounted on top of the testing platform, characterized in that: A window is provided on the top of the testing platform, and two movable tables for closing the window are installed on the top of the testing platform for sliding forward and backward; a pressure test mechanism and a fixing mechanism are installed on the bottom of the horizontal section of the gantry for sliding left and right; a moving mechanism for driving the pressure test mechanism and the fixing mechanism to move left and right is installed at the bottom of the gantry; a wear test mechanism is installed inside the testing platform; a scissor-type lift for pushing the wear test mechanism up and down is installed at the bottom of the inner cavity of the testing platform; an opening and closing mechanism for driving the movable table to open is installed inside the testing platform; The pressure test mechanism includes a first pressure plate arranged above the movable table, a first pressure assembly for pushing the first pressure plate to move up and down and an XY-axis movable platform symmetrically distributed about the first pressure plate are installed on the bottom of the gantry for sliding left and right, a second pressure assembly is installed on the bottom of the XY-axis movable platform, a shell is fixedly installed on the bottom of the second pressure assembly, a center block is rotatably installed on the front side of the shell, a plurality of second pressure plates are evenly installed on the circumferential surface of the center block, the second pressure plate is located above the first pressure plate, and the area of ​​the second pressure plate gradually increases in the counterclockwise direction, and an adjustment assembly for driving the center block to rotate is installed on the shell; The wear resistance testing mechanism includes a support frame that is slidably mounted inside the test bench, an abrasive belt is rotatably mounted inside the support frame, a driving assembly 1 for driving the abrasive belt to rotate circumferentially is mounted on the support frame, and the support frame is fixedly mounted on the top of the scissor lift; Through the linkage cooperation of the pressure resistance testing mechanism and the wear resistance testing mechanism, after the pressure resistance testing mechanism performs a pressure test on the rubber part, the scissor-type lift pushes the wear resistance testing mechanism upward to the bottom of the rubber part to perform a wear test on the rubber part. During the wear test, the pressure resistance testing mechanism always maintains pressure on different parts of the rubber part to simulate the wear resistance of the rubber part when different parts are subjected to different pressures before and after use.

2. The rubber part performance testing device according to claim 1, characterized in that: The second pressure-applying assembly includes an electric push rod 1 fixedly mounted on the bottom of the XY-axis moving platform, a pressure sensor 1 is fixedly connected to the bottom of the telescopic section of the electric push rod 1, and the bottom of the pressure sensor 1 is fixedly connected to the top of the shell. The second pressure-applying assembly has the same structure as the first pressure-applying assembly, and the bottom of the first pressure assembly is detachably connected to the top of the first pressure plate by a threaded connection.

3. The rubber part performance testing device according to claim 1, characterized in that: The adjustment assembly includes a center rod rotatably mounted inside the shell and located above the center block, a toggle disk is coaxially fixedly mounted on the outside of the center rod, a groove wheel coaxially connected to the center block is rotatably mounted inside the shell, the toggle disk cooperates with the groove wheel, and a drive assembly 2 for driving the center rod to rotate unidirectionally is installed in the shell.

4. The rubber part performance testing device according to claim 3, characterized in that: The second driving component includes a first gear rotatably mounted on the outside of the center rod and located in front of the dial, a ratchet and pawl mechanism is installed between the center rod and the first gear, a first rack is installed on the top of the shell for sliding up and down, the first rack is meshed with the first gear, and a first return spring is fixedly connected between the top of the first rack and the top of the shell.

5. The rubber part performance testing device according to claim 1, characterized in that: The moving mechanism includes a slide groove opened at the bottom of the gantry, a lead screw is rotatably installed inside the slide groove, and a slider is connected to the external thread of the lead screw. The slider is installed inside the slide groove for sliding left and right. The first pressure assembly and the top of the XY-axis moving platform are fixedly connected to the slider.

6. The rubber part performance testing device according to claim 5, characterized in that: The fixing mechanism includes a fixing ring fixedly connected to the bottom of the slider through a support rod, the fixing ring is located above the movable table, the first pressure plate is located inside the fixing ring, and clamping components are installed on both the front and rear sides of the fixing ring.

7. The rubber part performance testing device according to claim 6, characterized in that: The clamping assembly includes a threaded rod threadedly connected to a fixing ring, an end of the threaded rod close to the center of the fixing ring is rotatably mounted with an arc-shaped clamping block, the interior of the fixing ring slides back and forth through a guide rod symmetrically distributed about the threaded rod, and the end of the guide rod close to the center of the fixing ring is fixedly connected to the arc-shaped clamping block.

8. The rubber part performance testing device according to claim 5, characterized in that: The driving assembly includes two driving rollers rotatably mounted inside the support frame and symmetrically distributed front and back. The sanding belt transmission is connected between the outsides of the front and rear driving rollers. Two support plates are fixedly connected to the inner side of the support frame to respectively support the upper and lower horizontal sections of the sanding belt. A driving motor that drives the rear driving roller is installed on the left side of the support frame. The rear driving roller and the screw are connected through a pulley assembly.

9. The rubber part performance testing device according to claim 1, characterized in that: The opening and closing mechanism includes a second rack symmetrically fixedly installed on the front and rear sides of the support frame, a crossbeam symmetrically distributed about the front and rear of the support frame is fixedly installed inside the detection platform, a second gear is rotatably installed on the side of the crossbeam close to the support frame, the second gear is meshed with the corresponding second rack, a third gear is rotatably installed on the inner top wall of the detection platform, and is located below the movable table top and symmetrically distributed front and back, the third gear is connected to the corresponding second gear through a second pulley assembly, and a third rack is fixedly connected to the bottom of the movable table top, and the third rack is meshed with the corresponding third gear.

10. The rubber part performance testing device according to claim 8, characterized in that: A tensioning mechanism for adjusting the belt tensioning degree of pulley assembly 1 is installed inside the vertical section on the right side of the gantry. The tensioning mechanism includes a mounting plate fixedly mounted on the inner wall of the vertical section on the right side of the gantry, the rear side of the mounting plate is fixedly connected to roller frame 1, the rear side of the roller frame 1 is rotatably mounted with a fixed wheel, the rear side of the mounting plate is fixedly connected to an elastic telescopic rod symmetrically distributed above and below about the roller frame 1, the rear side of the elastic telescopic rod is fixedly connected to roller frame 2, the rear side of the roller frame 2 is rotatably mounted with a movable wheel, and the belt in the pulley assembly 1 cooperates with the movable wheel and the fixed wheel respectively.

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