Pressure Testing Device for Elastic Materials

Abstract

The present invention discloses a pressure testing device for elastic materials, which includes a pressure loading mechanism, an upper pressure sensor, an elastic material fixing bracket, a lower pressure sensor, and a plurality of support rods. The pressure loading mechanism is connected to the elastic material fixing bracket and is used to drive the elastic material fixing bracket to move up and down. The upper pressure sensor is fixed between the pressure loading mechanism and the elastic material fixing bracket. The elastic material fixing bracket is used to fix the elastic material to be tested on its lower surface. The plurality of support rods are fixed below the elastic material fixing bracket, and the support rods can move in both the height direction and the horizontal direction. One or more lower pressure sensors arranged along the length direction of the support rod are fixed on the upper surface of each support rod, and the lower pressure sensors are used to detect the bearing pressure of their own bearing surface when the pressure loading mechanism presses the elastic material to be tested onto the lower pressure sensors. The present invention can test the performance of elastic materials with different shapes and materials in different scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of testing devices. More specifically, the present invention relates to a pressure testing device for elastic materials. Background Art

[0002] The currently commonly used method for testing elastic materials is to place the material to be tested on a flat platform surface, and drive a pressing plate to move up and down through a servo motor to test the relevant properties of the elastic material, including the compression ratio, permanent deformation amount, etc., and the performance of the material itself can be measured. However, for some stepped products, it is difficult to simulate the pressure distribution of each step when the elastic material is pressed, and it is also difficult to quickly measure the compression life of the elastic material. Instead, a dedicated additional platform needs to be developed for relevant experiments, which not only increases the cost but also has poor subsequent versatility. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention innovatively provides a pressure testing device for elastic materials, which can quickly test the pressure distribution of planar elastic materials and non-planar elastic materials, thereby testing the performance of elastic materials under different scenarios with strong versatility; the upper pressure sensor is used to read the output pressure of the pressure loading mechanism, and the lower pressure sensor is used to read the bearing pressure of its upper bearing surface, so as to accurately obtain the mechanical properties of the elastic material; by setting a plurality of support rods and a plurality of lower pressure sensors, the performance of the elastic material at different positions can be measured, so as to be used for detecting the relevant performance of stepped products.

[0004] To achieve the above technical objectives, the present invention discloses a pressure testing device for elastic materials, including a pressure loading mechanism, an upper pressure sensor, an elastic material fixing bracket, a lower pressure sensor, and a plurality of support rods,

[0005] The pressure loading mechanism is connected to the elastic material fixing bracket and is used to drive the elastic material fixing bracket to move up and down;

[0006] The upper pressure sensor is fixed between the pressure loading mechanism and the elastic material fixing bracket and is used to detect the output pressure of the pressure loading mechanism;

[0007] The elastic material fixing bracket is used to fix the elastic material to be tested on its lower surface;

[0008] The plurality of support rods are fixed below the elastic material fixing bracket and are used to support the lower pressure sensor, and the support rods can move in both the height direction and the horizontal direction;

[0009] One or more of the lower pressure sensors arranged along the length direction of the support rod are fixed on the upper surface of each support rod, and the lower pressure sensors are used to detect the bearing pressure of their own bearing surface when the pressure loading mechanism presses the elastic material to be tested onto the lower pressure sensors.

[0010] Further, both the pressure loading mechanism and the elastic material fixing bracket can slide back and forth relative to the support rod.

[0011] Further, it further includes a frame for supporting the pressure loading mechanism and the support rod. A support plate is fixed above the frame. The support plate is slidably connected to the frame. The pressure loading mechanism is fixed on the support plate. The pressurizing part of the pressure loading mechanism moves up and down relative to the support plate. The support rod is fixedly connected to the frame.

[0012] Further, the support plate is slidably connected to the frame through a sliding component. The sliding component includes a slide rail and a slider. One of the slide rail and the slider is fixed on the support plate, and the other of the slide rail and the slider is fixed on the frame. A slide rail clamp is fixed on the support plate.

[0013] Further, it further includes a guiding mechanism for guiding the pressure loading mechanism to apply a downward pressure. The lower end of the guiding mechanism is fixedly connected to the elastic material fixing bracket. The guiding mechanism is slidably connected to the support plate up and down.

[0014] Further, the guiding mechanism includes two parallel guiding shafts. The two guiding shafts are distributed on both sides of the pressure loading mechanism. The support plate is provided with guiding holes for the guiding shafts to pass through. The guiding shafts slide up and down in the guiding holes under the drive of the pressure loading mechanism.

[0015] Further, internal threaded holes are provided at both ends of the support rod. The axial direction of the internal threaded holes is along the length direction of the support rod. A plurality of fastening holes for the fastening bolts to pass through are provided on both sides of the frame in the height direction and the horizontal direction. The fastening bolts are matched with the internal threaded holes. The height and horizontal position of the support rod are adjusted by selecting the fastening holes through which the fastening bolts pass.

[0016] Further, it further includes a reset connection mechanism for connecting the pressurizing part of the pressure loading mechanism and the elastic material fixing bracket to enable the pressure loading mechanism to drive the elastic material fixing bracket to move upward.

[0017] Further, the reset connection mechanism includes a limit post and a connection frame. The connection frame is fixedly connected to the elastic material fixing bracket. The limit post is stepped. The end of the column with a smaller outer diameter of the limit post is connected to the pressure loading mechanism. A limit hole is formed in the connection frame, and the limit hole is sleeved on the column of the limit post with a smaller outer diameter. The diameter of the limit hole is smaller than the outer diameter of the column of the limit post with a larger outer diameter.

[0018] Further, feet are fixed at the four corners of the bottom of the frame.

[0019] The beneficial effects of the present invention are as follows:

[0020] The pressure testing device for elastic materials of the present invention can quickly test the pressure distribution of planar elastic materials and special-shaped surface elastic materials, so as to test the performance of elastic materials themselves in different scenarios, and has strong versatility; the upper pressure sensor is used to read the output pressure of the pressure loading mechanism, and the lower pressure sensor is used to read the bearing pressure of its upper bearing surface, so as to accurately obtain the mechanical properties of the elastic material; by setting a plurality of support rods and a plurality of lower pressure sensors, the performance of the elastic material at different positions can be measured, so as to be used for the detection of relevant performance of stepped products. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the pressure testing device for elastic materials according to an embodiment of the present invention.

[0022] Figure 2 is a schematic structural diagram of the pressure testing device for elastic materials according to an embodiment of the present invention excluding the front side of the frame.

[0023] Figure 3 is a schematic structural diagram of the pressure testing device for elastic materials according to an embodiment of the present invention excluding the side plate of the frame.

[0024] In the figure,

[0025] 1, frame; 2, control system; 3, pressure loading mechanism; 4, guiding mechanism; 41, guiding shaft; 5, upper pressure sensor; 6, elastic material fixing bracket; 7, lower pressure sensor; 8, bearing platform; 9, support rod; 10, support plate; 11, sliding assembly; 111, slide rail; 112, slider; 12, slide rail clamp; 13, fastening hole; 14, limit post; 15, connection frame; 16, foot. Detailed Embodiments

[0026] The pressure testing device for elastic materials provided by the present invention will be explained and described in detail below with reference to the accompanying drawings of the specification.

[0027] This embodiment specifically discloses a pressure testing device for elastic materials (hereinafter referred to as the pressure testing device), asFigure 1 As shown in the figure, it includes a pressure loading mechanism 3, an upper pressure sensor 5, an elastic material fixing bracket 6, a lower pressure sensor 7, and a plurality of support rods 9. The pressure loading mechanism 3 is connected to the elastic material fixing bracket 6 and is used to drive the elastic material fixing bracket 6 to move up and down. The upper pressure sensor 5 is fixed between the pressure loading mechanism 3 and the elastic material fixing bracket 6 and is used to detect the output pressure of the pressure loading mechanism 3. The elastic material fixing bracket 6 is used to fix the elastic material to be tested on its lower surface. The plurality of support rods 9 are fixed below the elastic material fixing bracket 6 and are used to support the lower pressure sensor 7. The support rods 9 can move in both the height direction and the horizontal direction. One or more lower pressure sensors 7 arranged along the length direction of the support rod 9 are fixed on the upper surface of each support rod 9. The lower pressure sensor 7 is used to detect the bearing pressure of its own bearing surface when the pressure loading mechanism 3 presses the elastic material to be tested onto the lower pressure sensor 7.

[0028] The pressure testing device of this embodiment further includes a frame 1 for supporting the pressure loading mechanism 3 and the support rods 9. The frame 1 includes a frame body and side plates fixed to the side of the frame body. As Figure 1 and 2 shown, a support plate 10 is fixed above the frame 1. The pressure loading mechanism 3 is fixed on the support plate 10, and the pressurizing part of the pressure loading mechanism 3 moves up and down relative to the support plate 10. In this embodiment, the pressure loading mechanism 3 is an electric cylinder. The servo motor of the electric cylinder is fixed above the support plate 10 and is fixedly connected to the support plate. The telescopic rod of the electric cylinder can move up and down. The telescopic rod of the electric cylinder is located below the support plate 10 and penetrates into the interior of the frame body of the frame 1.

[0029] As Figure 1 and 2 shown, in this embodiment, the upper pressure sensor 5 is fixed on the upper surface of the elastic material fixing bracket 6. The upper pressure sensor 5 is located below the pressure loading mechanism 3. The elastic material fixing bracket 6 fixes the elastic material to be tested on its lower surface. The elastic material can be pasted on the lower surface of the elastic material fixing bracket 6 by means of adhesion. When the pressure loading mechanism 3 applies a downward pressure, the pressurizing part of the pressure loading mechanism 3 first contacts the upper pressure sensor 5, and then continues to press down to make the elastic material fixing bracket 6 move downward. The upper pressure sensor 5 is used to detect the output pressure of the pressure loading mechanism 3.

[0030] In some preferred embodiments, the pressure testing device further includes a guiding mechanism 4. The guiding mechanism 4 is used to guide the pressure loading mechanism 3 to apply a downward pressure. The lower end of the guiding mechanism 4 is fixedly connected to the elastic material fixing bracket 6, so that the pressure loading mechanism applies a stable and uniform pressure to the elastic material. When the pressure loading mechanism presses down the elastic material fixing bracket, it drives the guiding mechanism 4 to move downward at the same time. The guiding mechanism plays a guiding role, enabling the pressure loading mechanism 3 to apply pressure stably downward.

[0031] The guiding mechanism 4 is slidably connected to the support plate 10 up and down. In this embodiment, the guiding mechanism 4 includes two mutually parallel guiding shafts 41. The two guiding shafts 41 are distributed on both sides of the pressure loading mechanism 3. Preferably, the two guiding shafts 41 are symmetrically distributed on both sides of the pressure loading mechanism 3. The guiding shafts 41 are parallel to the telescopic rod of the electric cylinder. The support plate 10 is provided with guiding holes for the guiding shafts 41 to pass through. The lower ends of the guiding shafts 41 are fixedly connected to the upper surface of the elastic material fixing bracket. The guiding shafts 41 slide downward in the guiding holes under the drive of the pressure loading mechanism 3. The two guiding shafts 41 are symmetrically distributed and move downward simultaneously, keeping the left and right sides of the elastic material fixing bracket balanced and the elastic material uniformly stressed. The length of the guiding shafts 41 is greater than the maximum telescopic stroke of the telescopic rod of the electric cylinder, preventing the telescopic rod from completely sliding under the support plate 10 and being unable to reset, and unable to play a guiding role in the next test. A limiting block with an outer diameter larger than the guiding hole can also be provided at the top of the guiding shafts 41 to play a limiting role.

[0032] In this embodiment, a fixing groove is provided on the upper surface of the elastic material fixing bracket 6, and the upper pressure sensor 5 is fixed in the fixing groove. The bearing surface of the upper pressure sensor 5 protrudes from the notch of the fixing groove.

[0033] The testing device of this embodiment further includes a reset connection mechanism. The reset connection mechanism is used to connect the pressurizing part of the pressure loading mechanism and the elastic material fixing bracket to drive the elastic material fixing bracket to move upward by the pressure loading mechanism, realizing reset and preparing for the next test.

[0034] Such as Figure 1 and 2As shown, the reset connection mechanism includes a reset post 14 and a connection frame 15. The connection frame is fixedly connected to the elastic material fixing bracket 6. The connection frame 15 is in an inverted U shape and is fixedly connected to the upper surface of the elastic material fixing bracket 6. The connection frame 15 is erected above the fixing groove and above the upper pressure sensor 5. The two ends of the connection frame 15 straddle both sides of the fixing groove of the elastic material fixing bracket 6. The limit post 14 is in a stepped shape. The end of the column with a smaller outer diameter of the limit post 14 is connected to the pressurizing part of the pressure loading mechanism. The outer diameter of the column above the limit post 14 is smaller than that of the column below. The top of the limit post 14 is fixedly connected to the bottom of the telescopic rod of the electric cylinder. A limit hole is provided at the top of the connection frame 15. The limit hole is sleeved on the column with a smaller outer diameter of the limit post 14, and the aperture of the limit hole is smaller than the outer diameter of the column with a larger outer diameter of the limit post 14. The length of the column with a smaller outer diameter of the limit post 14 is not less than the maximum telescopic stroke of the telescopic rod of the electric cylinder; the maximum cross-section of the limit post 14 is less than or equal to the cross-section of the upper pressure sensor 5, ensuring that when the telescopic rod of the electric cylinder presses down, the limit post 14 can fully act on the upper end of the upper pressure sensor 5, and preventing the limit post 14 from being supported on the elastic material fixing bracket 6 around the fixing groove, resulting in inaccurate measurement of the output pressure of the electric cylinder by the upper pressure sensor 5. During the downward pressing process of the electric cylinder, the telescopic rod of the electric cylinder drives the limit post 14 to first contact the upper pressure sensor 5 and then press down the elastic material fixing bracket 6, further causing the guide shaft 41 connected to the elastic material fixing bracket 6 to slide downward in the guide hole; after the downward pressing is completed, the telescopic rod of the electric cylinder retracts. Since the outer diameter of the column with a larger outer diameter of the limit post 14 is greater than the aperture of the limit hole, it can drive the connection frame 15 and the elastic material fixing bracket 6 to rise and reset, thereby driving the guide shaft 41 to reset as well, preparing for the next test and enabling continuous testing.

[0035] The stepped limit post 14 in this embodiment can be composed of a stud and a nut. The nut is threadedly connected to the lower part of the bolt. The top of the bolt is fixedly connected to the bottom of the telescopic rod of the electric cylinder. The part of the bolt located outside the nut serves as the column with a smaller outer diameter and passes through the limit hole. The nut is located below the connection frame 15 and is used to press down the upper pressure sensor 5. Using a stud and a nut as the limit post 14 is convenient for installation and disassembly.

[0036] As Figure 3As shown, a plurality of support rods 9 are fixed below the elastic material fixing bracket 6. The support rods 9 can move in both the height direction and the horizontal direction. In this embodiment, the plurality of support rods 9 can be arranged in parallel in the horizontal direction. By adjusting the height of each support rod, the upper surfaces of the plurality of support rods 9 are in the same plane to form a support plane or a support stepped surface. When the upper surfaces of the support rods 9 are in the same plane, it is applicable to the pressure test of planar elastic materials. When a stepped surface is formed between the plurality of support rods 9, it is applicable to the pressure test of elastic materials with special-shaped surfaces, and can simulate various scenarios for testing, with strong versatility. The movement of the support rods 9 in the horizontal direction can adjust the horizontal position of the formed support surface relative to the elastic material to be tested, and can also adjust the relative position and distance between the support rods, thereby adjusting the shape of the formed support surface. One or more downward pressure sensors 7 are fixed on the upper surface of each support rod 9 along the length direction of the support rod 9. A bearing platform 8 can be correspondingly fixed above each downward pressure sensor 7. When the elastic material to be tested is driven by the elastic material fixing bracket 6 to move downward and press on the downward pressure sensor 7, the downward pressure sensor 7 can measure the bearing capacity borne by the bearing platform 8 above it. When a plurality of downward pressure sensors 7 are fixed on the support rod 9, the pressure borne at different positions of the elastic material can be measured, the pressure distribution can be obtained, and further the elastic properties at different positions of the elastic material can be measured.

[0037] A plurality of fixing grooves are arranged along the length direction on the support rod 9, and the downward pressure sensor 7 is fixed in the corresponding fixing groove. The number of downward pressure sensors 7 fixed on each support rod 9 is set according to the size of the elastic material and the actual test requirements.

[0038] Internal threaded holes are provided at both ends of the support rod 9, and the axial direction of the internal threaded holes is along the length direction of the support rod 9. A plurality of fastening holes 13 for the fastening bolts to pass through are provided on both sides (i.e., on the side plates) of the frame 1 in both the height direction and the horizontal direction. The fastening bolts are matched with the internal threaded holes. By selecting the fastening holes 13 through which the fastening bolts pass, the height and horizontal position of the support rod 9 can be adjusted. The fastening holes 13 are provided on the side plates on the left and right sides of the frame. After the fastening bolts pass through the fastening holes 13, they are threadedly connected to the internal threaded holes at the ends of the support rod 9. After all the support rods 9 are fixed, a support plane or a support stepped surface is formed for simulating different scenarios. The adjustment and installation in the whole process are convenient and the versatility is strong.

[0039] The testing process of the testing device for testing the performance of elastic materials in this embodiment can be controlled by the control system 2. The pressure loading mechanism 3, the upper pressure sensor 5, and the lower pressure sensor 7 are respectively electrically connected to the control system 2. The control system 2 is used to control parameters such as the downward stroke, downward speed, and downward number of times of the pressure loading mechanism 3. The control system 2 receives the pressure values measured by the upper pressure sensor 5 and the lower pressure sensor 7, and performs corresponding calculations to obtain the performance of the elastic material to be tested. The control system 2 of this embodiment adopts the control system of an existing pressure testing device, which has an automated programming page. It can set the pressure value for each pressure application, the number of repeated compressions, and the frequency. It can calculate the performance of the material based on the pressure value, such as the resilience and the maximum compression ratio, etc. It can automatically draw the curves of the elastic force and the material deformation amount, and can also test the curve changes of the service life and aging of a single elastic material under compression.

[0040] The testing device of this embodiment can be automatically controlled by the control system 2, and with the transmission mechanism of the electric cylinder, it realizes closed-loop servo control, with higher precision of the pressure stroke. At the same time, by adding the upper pressure sensor 5 for use, it can precisely control the magnitude of the thrust.

[0041] In some embodiments, the support plate 10 is slidably connected to the frame 1, so that the pressure loading mechanism 3, the elastic material fixing bracket 6, and the guiding mechanism 4 on the support plate 10 can all slide relative to the frame 1, and the relative position between the elastic material fixing bracket 6 and the support rod 9 can be adjusted, that is, the compression position of the elastic material to be tested is adjusted. In this embodiment, the support plate 10 is slidably connected to the frame 1 through a sliding component 11. The sliding component 11 includes a slide rail 111 and a slider 112. One of the slide rail 111 and the slider 112 is fixed on the support plate 10, and the other of the slide rail 111 and the slider 112 is fixed on the frame 1. A slide rail clamp 12 is fixed on the support plate 10. The slide rail 111 is fixed on the lower surface of the support plate 10, and the slider 112 is fixed on the upper surface of the frame 1. The slider 112 is inserted into the chute of the slide rail 111. Moving the support plate 10 enables the slide rail 111 to slide along the slider 112. The slide rail clamp 12 is fixed on the lower surface of the support plate 10 in front of the slide rail 111, and is used to lock the sliding of the slide rail 111. After sliding the support plate 10 to the designated position, it is locked by the slide rail clamp 12 to ensure the stability during the pressure test and also prevent the slide rail 111 from slipping. Or, the slider 112 is fixed on the lower surface of the support plate 10, the slide rail 111 is fixed on the upper surface of the frame 1, the slide rail clamp 12 is fixed on the lower surface of the support plate 10 and in front of the slider 112. The slider 112 is inserted into the chute of the slide rail 111. Moving the support plate 10 enables the slider 112 to slide along the slide rail 111, and the support plate 10 is locked at the designated position by the slide rail clamp 12.

[0042] Such as Figures 1-3As shown, the two ends of the support rod are connected to the left and right sides of the frame. The slide rail 111 and the slider 112 are arranged perpendicular to the support rod, so that the pressure loading mechanism 3, the elastic material fixing bracket 6 and the guiding mechanism can all slide in the direction perpendicular to the support rod to adjust the pressure-receiving position of the elastic material to be tested.

[0043] Foot cups 16 are fixed at the four corners of the bottom of the frame 1 to ensure the balance of the testing device.

[0044] The following is an example to illustrate the process of using the testing device of this embodiment to test the resilience of an elastic material:

[0045] First step: Fix the elastic material to be tested on the lower surface of the elastic material fixing bracket with double-sided tape, and ensure that the plane of the elastic material is flat after pasting;

[0046] Second step: Input the thickness, compression ratio and compression speed of the elastic material into the control system 2, and control the start of a single test;

[0047] Third step: The electric cylinder applies a downward pressure according to the control of the control system 2, presses down the elastic material fixing bracket 6 to press the elastic material against the downward pressure sensor, and stops pressing down after reaching the preset compression ratio;

[0048] Fourth step: After the test is completed, the upper pressure sensor 5 transmits the measured output pressure of the electric cylinder to the control system 2, and the lower pressure sensor 7 transmits the measured bearing pressure of the bearing platform 8 to the control system 2. The control system 2 calculates the resilience of the elastic material at the specified compression ratio based on the two pressure values, and can draw and export the curve graph of the resilience of the elastic material and the deformation amount during the compression process of the material.

[0049] The following is an example to illustrate the process of using the testing device of this embodiment to test the maximum compression ratio of an elastic material:

[0050] First step: Fix the elastic material to be tested on the lower surface of the elastic material fixing bracket with double-sided tape, and ensure that the plane of the elastic material is flat after pasting;

[0051] Second step: Input the thickness and compression speed of the elastic material into the control system 2;

[0052] Third step: The electric cylinder applies a downward pressure at a slower speed according to the control of the control system 2, presses down the elastic material fixing bracket 6 to press the elastic material against the downward pressure sensor, and stops pressing down when the pressure measured by the lower pressure sensor 7 no longer changes;

[0053] Fourth step: After the test is completed, measure the thickness of the elastic material at this time, and the maximum compression ratio of the elastic material can be calculated.

[0054] The following is an example of the process of using the test device of this embodiment to test the repeated use performance and compression life of elastic materials:

[0055] The first step: Fix the elastic material to be tested on the lower surface of the elastic material fixing bracket with double-sided tape, and ensure that the material plane is flat after pasting;

[0056] The second step: Input the thickness, compression ratio, compression frequency and number of times of the elastic material into the control system 2, and control the continuous operation through the control system 2 for continuous testing;

[0057] The third step: The electric cylinder presses down and resets according to the parameters preset by the control system 2, and continuously conducts tests. After the tests are completed, place the elastic material at room temperature and let it stand for 30 minutes, then test its thickness change to calculate the gross compression deformation rate;

[0058] The fourth step: Export the curve graphs of the pressure change values and the number of times of the upper pressure sensor 5 and different lower pressure sensors 7, and read the change of the elastic material resilience corresponding to the same time point in the material compression cycle within the set number of movement times, so as to measure the failure situation of the material elasticity.

[0059] Before the test, according to the test requirements and the shape and size of the elastic material, adjust the number, height and horizontal position of the support rods 9. The adjustment of the number of the support rods 9 corresponds to the size and area of the formed support surface. The height of the support rods 9 corresponds to the formed support surface being a plane or a stepped surface, and adjust the shape of the support surface according to the test requirements. When the height difference between the support rods 9 is zero and the support surface is a plane, it is used to measure the relationship between the upper and lower resilience and the deformation amount of the planar elastic material; the control system 2 can be repeatedly executed and can be used to judge the stability of the relationship between the resilience and the deformation amount; when the height difference between the support rods 9 is not zero, the pressure distribution of the elastic material with a special-shaped surface can be measured, and multiple stepped surfaces can be established to establish the curve of the upper and lower resilience and the deformation amount. The control system 2 can be repeatedly executed and can be used to judge the stability of the relationship between the resilience and the deformation amount.

[0060] The number and position of the lower pressure sensors 7 on the support surface formed by the support rods 9 are set according to the test requirements. The lower pressure sensors 7 at different positions can test the performance of different positions of the elastic material. The control system 2 can accurately obtain the position information of the lower pressure sensors 7 and acquire information such as the compression ratio and the resilience / compression ratio curve of the elastic material at this position.

[0061] The testing device of this embodiment can quickly measure the pressure distribution of planar elastic materials and special-shaped surface elastic materials, as well as the material properties of the materials themselves, such as resilience, maximum compression ratio, and compression service life of the materials, etc. The testing device can simulate the usage of elastic materials in different scenarios, has strong compatibility, is convenient to operate and use, can adjust and set relevant parameters according to its own needs, and has strong flexibility.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0064] In the description of this specification, the description with reference to terms such as "this embodiment", "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any at least one embodiment or example. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0066] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and simple improvements made to the substantial content of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pressure testing device for an elastic material, characterized in that, It includes a pressure loading mechanism (3), an upper pressure sensor (5), an elastic material fixing bracket (6), a lower pressure sensor (7) and a plurality of support rods (9). The pressure loading mechanism (3) is connected to the elastic material fixing bracket (6) and is used to drive the elastic material fixing bracket (6) to move up and down. The upper pressure sensor (5) is fixed between the pressure loading mechanism (3) and the elastic material fixing bracket (6) and is used to detect the output pressure of the pressure loading mechanism (3). The elastic material fixing bracket (6) is used to fix the elastic material to be tested on its lower surface. The plurality of support rods (9) are fixed below the elastic material fixing bracket (6) and are used to support the lower pressure sensor (7). The support rods (9) can move in both the height direction and the horizontal direction. The plurality of support rods (9) can be arranged in parallel in the horizontal direction. By adjusting the height of each support rod, the upper surfaces of the plurality of support rods (9) are in the same plane to form a support plane or a support step surface. When the upper surfaces of the support rods (9) are in the same plane, it is used for the pressure test of planar elastic materials. When a step surface is formed between the plurality of support rods (9), it is used for the pressure test of elastic materials with special-shaped surfaces. The movement of the support rods (9) in the horizontal direction can adjust the horizontal position of the formed support surface relative to the elastic material to be tested, and can also adjust the relative position and distance between the support rods, so as to adjust the shape of the formed support surface. One or more of the lower pressure sensors (7) arranged along the length direction of the support rod (9) are fixed on the upper surface of each support rod (9). The lower pressure sensor (7) is used to detect the bearing pressure of its own bearing surface when the pressure loading mechanism (3) presses the elastic material to be tested onto the lower pressure sensor (7).

2. The pressure testing device for elastic materials according to claim 1, characterized in that Both the pressure loading mechanism (3) and the elastic material fixing bracket (6) can slide relative to the support rod (9).

3. The pressure testing device for the elastic material according to claim 2, characterized in that, It further includes a frame (1) for supporting the pressure loading mechanism (3) and the support rod (9). A support plate (10) is fixed above the frame (1). The support plate (10) is slidably connected to the frame (1). The pressure loading mechanism (3) is fixed on the support plate (10). The pressurizing part of the pressure loading mechanism (3) moves up and down relative to the support plate (10). The support rod (9) is fixedly connected to the frame (1).

4. The pressure testing device for elastic materials according to claim 3, characterized in that, The support plate (10) is slidably connected to the frame (1) through a sliding component (11). The sliding component (11) includes a slide rail (111) and a slider (112). One of the slide rail (111) and the slider (112) is fixed on the support plate (10), and the other of the slide rail (111) and the slider (112) is fixed on the frame (1). A slide rail clamp (12) is fixed on the support plate (10).

5. The pressure testing device for elastic materials according to claim 3 or 4, characterized in that, It further includes a guiding mechanism (4) which is used to guide the downward pressure applied by the pressure loading mechanism (3). The lower end of the guiding mechanism (4) is fixedly connected to the elastic material fixing bracket (6), and the guiding mechanism (4) is slidably connected to the support plate (10) in the up and down direction.

6. The pressure testing device for elastic materials according to claim 5, characterized in that, The guiding mechanism (4) includes two parallel guiding shafts (41) which are distributed on both sides of the pressure loading mechanism (3). The support plate (10) is provided with guiding holes for the guiding shafts (41) to pass through, and the guiding shafts (41) slide up and down in the guiding holes under the drive of the pressure loading mechanism (3).

7. The pressure testing device for elastic materials according to claim 3, characterized in that, Both ends of the support rod (9) are provided with internal threaded holes, and the axial direction of the internal threaded holes is along the length direction of the support rod (9). Multiple fastening holes (13) for fastening bolts to pass through are provided on both sides of the frame (1) in the height direction and the horizontal direction. The fastening bolts are matched with the internal threaded holes, and the height and horizontal position of the support rod (9) are adjusted by selecting the fastening holes (13) through which the fastening bolts pass.

8. The pressure testing device for the elastic material according to claim 1, characterized in that, It further includes a reset connection mechanism which is used to connect the pressurizing part of the pressure loading mechanism and the elastic material fixing bracket so that the pressure loading mechanism drives the elastic material fixing bracket to move upward.

9. The pressure testing device for elastic materials according to claim 8, characterized in that, The reset connection mechanism includes a limit post (14) and a connection frame (15). The connection frame (15) is fixedly connected to the elastic material fixing bracket (6). The limit post (14) is in a stepped shape, the outer diameter of the column body above the limit post (14) is smaller than that of the column body below, the end of the column body with a smaller outer diameter of the limit post (14) is connected to the pressurizing part of the pressure loading mechanism, the connection frame (15) is provided with a limit hole, the limit hole is sleeved on the column body with a smaller outer diameter of the limit post (14), and the aperture of the limit hole is smaller than the outer diameter of the column body with a larger outer diameter of the limit post (14).

10. The pressure testing device for elastic materials according to claim 3, characterized in that, Foot cups (16) are fixed at the four corners of the bottom of the frame (1).

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