A rubber pendulum rebound tester

Abstract

The utility model discloses a rubber pendulum rebound elasticity testing machine relates to pendulum rebound elasticity testing machine field. The rubber pendulum rebound elasticity testing machine, the one side of mounting seat is provided with clamping unit. The rubber pendulum rebound elasticity testing machine, manually move the impact hammer to the initial position, and the iron part of adsorbing rotary seat is fixed at the preset angle through the magnetism of the energization of electromagnet attraction device, and when needing to release, the accuracy of angle control is ensured that the hammer arm falls freely without additional external force interference, replaces traditional mechanical buckle structure, and the magnetism of electromagnet attraction force is adjustable, and the mechanical shaking of impact hammer release moment is ensured, and the angle deviation is lower.

Description

Technical Field

[0001] This utility model relates to the technical field of pendulum rebound testing machine, specifically a rubber pendulum rebound testing machine. Background Technology

[0002] The pendulum rebound tester is a type of elasticity tester suitable for vulcanized rubber to determine the differences between different materials and the changes in elasticity of materials after aging.

[0003] By impacting the specimen with a pendulum, the rebound height or energy loss rate is measured to quantify the elastic recovery ability of rubber under dynamic load. The pendulum swings freely from a preset height to impact the rubber specimen placed on the clamping device. However, the following problems exist: the pendulum usually adopts a traditional mechanical snap-fit ​​structure, and there is mechanical vibration at the moment of release of the impact hammer, which affects the experimental results. Therefore, we propose a rubber pendulum rebound tester. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rubber pendulum rebound testing machine, which solves the problem that the traditional mechanical snap-fit ​​structure of the pendulum causes mechanical vibration at the moment of impact hammer release, affecting the test results.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a rubber pendulum rebound tester, comprising a tester body, a connecting seat and a mounting seat provided on the tester body, a clamping unit installed on one side of the mounting seat, a rotating seat rotatably connected to the connecting seat, an impact hammer arm installed on the rotating seat, an impact hammer connected to the end of the impact hammer arm, and an electromagnetic attraction device provided in the connecting seat; The clamping unit includes a fixed base, a clamping base, and a pneumatic clamping device. A mounting bracket is fixedly connected to the fixed base, and the mounting bracket is installed on the mounting base. The clamping base is slidably connected to the fixed base. The pneumatic clamping device is located on one side of the clamping base. The clamping base is used to heat the sample, and the clamping base and the pneumatic clamping device are used to clamp the sample.

[0006] Preferably, the impact hammer is provided with a rubber spherical impact end.

[0007] Preferably, the main body of the testing machine is equipped with a programmable logic controller (PLC), which, in combination with the main body of the testing machine, enables the setting of test parameters and the accurate display of the rebound angle value.

[0008] Preferably, the pneumatic clamping device is equipped with a force sensor to monitor the actual applied force of the pneumatic clamping device, and the pneumatic clamping device is equipped with a moving shaft.

[0009] Preferably, the mounting base and clamping unit are configured to correspond to the impact hammer, and are used in conjunction with the impact hammer to test the sample.

[0010] Preferably, the fixed base is provided with a slide rod, and the clamping base is slidably connected to the outer peripheral wall of the slide rod.

[0011] Preferably, a slide rail is fixedly connected to the fixed base, and a sliding seat is fixedly connected to the outer peripheral wall of the clamping base, the sliding seat being slidably connected to the outer peripheral wall of the slide rail.

[0012] Its beneficial effects are as follows: This rubber pendulum rebound testing machine allows the impact hammer to be manually moved to its initial position. The electromagnetic attraction device uses an electromagnet to generate magnetism, attracting the iron part of the rotating seat and fixing it at a preset angle. When release is needed, the power is cut off and the magnetism is demagnetized, achieving instant unlocking. This ensures that the hammer arm falls freely without any additional external force interfering with the accuracy of angle control, replacing the traditional mechanical buckle structure. The electromagnet attraction force is adjustable, ensuring that there is no mechanical vibration when the impact hammer is released and that the angle deviation is low. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection of the impact hammer of this utility model; Figure 3 This is a schematic diagram of the clamping unit structure of this utility model.

[0015] In the figure: 1. Main body of the testing machine; 2. Connecting seat; 21. Rotating seat; 22. Impact hammer arm; 23. Impact hammer; 3. Mounting seat; 4. Clamping unit; 41. Fixed seat; 411. Mounting frame; 42. Slide rail; 43. Slide rod; 44. Clamping seat; 45. Sliding seat; 46. Pneumatic clamping device. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] This utility model discloses a rubber pendulum rebound testing machine, according to the attached... Figure 1 and Figure 2 As shown, the test machine includes a main body 1, a connecting seat 2 and a mounting seat 3, a clamping unit 4 is installed on one side of the mounting seat 3, a rotating seat 21 is rotatably connected to the connecting seat 2, an impact hammer arm 22 is installed on the rotating seat 21, an impact hammer 23 is connected to the end of the impact hammer arm 22, and an electromagnetic attraction device is provided in the connecting seat 2. The electromagnetic attraction device includes an electromagnetic coil and a magnetizable attraction block, which is used to control the release angle of the impact hammer arm 22. Multiple electromagnets are arranged in a ring, and the overall angle is adjusted by the attraction combination of the electromagnets and the rotating seat 21 at different positions.

[0019] The electromagnetic attraction device generates magnetism by energizing an electromagnet. By adjusting the energizing time and current intensity of the electromagnetic coil, the magnitude of the magnetic force is controlled, and the iron part of the rotating seat 21 is fixed at a preset angle. When release is required, the power is cut off and the magnetism is demagnetized, achieving instant unlocking and ensuring that the hammer arm falls freely without additional external force interference, thus ensuring the accuracy of angle control.

[0020] Manually move the impact hammer 23 to the initial position, which is 90 degrees. The rotating seat 21, the impact hammer arm 22, and the impact hammer 23 are attracted to the initial position by an electromagnet, replacing the traditional mechanical snap-fit ​​structure. The electromagnet's attraction force is adjustable, ensuring that there is no mechanical vibration when the impact hammer 23 is released and that the angle deviation is low.

[0021] The clamping unit 4 includes a fixed base 41, a clamping base 44, and a pneumatic clamping device 46. A mounting bracket 411 is fixedly connected to the fixed base 41, and the mounting bracket 411 is installed with the mounting base 3. The clamping base 44 is slidably connected to the fixed base 41. The pneumatic clamping device 46 is located on one side of the clamping base 44. The clamping base 44 is used to heat the sample, and the clamping base 44 and the pneumatic clamping device 46 are used to clamp the sample.

[0022] The sample is placed between the clamping seat 44 and the pneumatic clamping device 46. The thickness parameters are set via the touch screen. The pneumatic device automatically applies a force of 200±20N, which is displayed in real time. At this time, the sample is heated by the clamping seat 44. With the help of the temperature sensor on the clamping seat 44, the temperature of the sample clamping seat 44 is controlled to simulate the actual working temperature and improve the authenticity of the test. The electromagnetic attraction device releases the impact hammer 23 to conduct the test. After the test is completed, the rebound angle and rebound rate are automatically displayed and calculated. Multiple tests can display the average rebound rate. The PLC automatically calculates the rebound rate and generates a report to reduce human error.

[0023] The clamping base 44 has an aluminum alloy clamping surface and a built-in flexible heating film. The temperature can be adjusted by a temperature controller set in the clamping base 44, with a maximum of 100℃. The clamping base 44 is wrapped with aerogel felt to reduce heat loss and ensure the safety of operators.

[0024] The main body 1 of the testing machine has a built-in Wi-Fi module, which enables remote parameter setting, real-time data monitoring and fault diagnosis through a dedicated APP or web interface. It supports network connectivity for multiple devices and data synchronization to the cloud platform.

[0025] The main body of the testing machine 1 has a built-in micro printer that supports the instant printing of test results. It can read and print multiple sets of test results and average values, making the test results more accurate.

[0026] The technical parameters for this embodiment are as follows: 1. Impact energy of the impact hammer: 0.5J; 2. Impact hammer arm length: 0.2m; 3. Indication range: 0%~100%; 4. Drop angle: 90°±0.2°; 5. Angle display accuracy: 0.1°; 6. Impact velocity: 1.98 m / s; 7. Specimen clamping force: 200±20N with force value display function; 8. Specimen clamping thickness: adjustable from 0 to 60 mm (moving axis position can be moved from 0 to 60 mm); 9. Minimum marking on the moving axis: 1mm; 10. The relationship between the weight of the equipment and the weight corresponding to the energy of the impact head: not less than 200 times; 11. Sample heating temperature range: room temperature - 100℃; 12. Sample heating temperature accuracy: ±1℃; 13. Dimensions (approx.): 600*300*590mm (W×D×H); 14. Weight (approx.): 60kg; 15. Power supply: 1∮AC220V50Hz.

[0027] The impact hammer 23 is equipped with a rubber spherical impact end.

[0028] The main body 1 of the testing machine is equipped with a touch screen, and a programmable logic controller is installed in the main body 1. The programmable logic controller, in conjunction with the touch screen, enables the setting of test parameters and the accurate display of the rebound angle value.

[0029] By adjusting the release time of the electromagnet using a PLC and combining it with the mass of the pendulum, precise control of the impact energy can be achieved.

[0030] The PLC automatically calculates the springback angle θ and springback rate R using the following formula:

[0031] Where α is the initial impact angle, multiple sets of test data are automatically stored and the average value is calculated.

[0032] According to the appendix Figure 3 As shown, a force sensor is provided on the pneumatic clamping device 46 to monitor the actual applied force of the pneumatic clamping device 46, and a moving shaft is provided on the pneumatic clamping device 46.

[0033] The pneumatic clamping device 46 is a cylinder structure. With the force sensor, a force of 200±20N can be applied to the sample through the pneumatic clamping device 46. The pneumatic clamping device 46 has a force value display function and displays the test clamping force. The clamping surface is covered with anti-slip rubber.

[0034] The position of the moving axis can be moved from 0 to 60 mm, thereby adjusting the specimen clamping thickness within the range of 0 to 60 mm.

[0035] The mounting base 3 and the clamping unit 4 are set up to correspond to the impact hammer 23, and are used in conjunction with the impact hammer 23 to test the sample.

[0036] A slide rod 43 is provided in the fixed base 41, and the clamping base 44 is slidably connected to the outer peripheral wall of the slide rod 43.

[0037] A slide rail 42 is fixedly connected to the fixed base 41, and a sliding base 45 is fixedly connected to the outer peripheral wall of the clamping base 44. The sliding base 45 is slidably connected to the outer peripheral wall of the slide rail 42.

[0038] The sliding seat 45 slides on the slide rail 42, ensuring that the clamping seat 44 slides stably in the fixed seat 41.

[0039] Working principle: The sample is placed between the clamping seat 44 and the pneumatic clamping device 46. The thickness parameters are set through the touch screen, and the pneumatic device automatically applies a force of 200±20N, which is displayed in real time. At this time, the sample is heated by the clamping seat 44, and the temperature of the sample holder clamping seat 44 is controlled by the temperature sensor on the clamping seat 44. Manually move the impact hammer 23 to the initial position, which is 90 degrees. After the touch screen displays "calibration successful", lock it. The rotating seat 21, impact hammer arm 22 and impact hammer 23 are attracted to the initial position by electromagnet. The electromagnetic attraction device releases the impact hammer 23 for testing. After the test is completed, the rebound angle and rebound rate are automatically displayed and calculated. Multiple tests can display the average rebound rate. The PLC automatically calculates the rebound rate and generates a report, reducing human error.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rubber pendulum rebound testing machine, comprising a testing machine body (1), characterized in that, The main body (1) of the testing machine is provided with a connecting seat (2) and a mounting seat (3). A clamping unit (4) is installed on one side of the mounting seat (3). A rotating seat (21) is rotatably connected to the connecting seat (2). An impact hammer arm (22) is installed on the rotating seat (21). An impact hammer (23) is connected to the end of the impact hammer arm (22). An electromagnetic attraction device is provided in the connecting seat (2). The electromagnetic attraction device includes an electromagnetic coil and a magnetizable attraction block, which is used to control the release angle of the impact hammer arm (22).

2. The rubber pendulum rebound testing machine according to claim 1, characterized in that, The impact hammer (23) is provided with a rubber spherical impact end.

3. The rubber pendulum rebound testing machine according to claim 1, characterized in that, The mounting base (3) and clamping unit (4) are set up to correspond to the impact hammer (23) and are used to test the sample in conjunction with the impact hammer (23).

4. The rubber pendulum rebound testing machine according to claim 1, characterized in that, The clamping unit (4) includes a fixed base (41), a clamping base (44) and a pneumatic clamping device (46). The clamping base (44) is slidably connected to the fixed base (41), and the pneumatic clamping device (46) is disposed on one side of the clamping base (44). The clamping base (44) and the pneumatic clamping device (46) are used to clamp the sample.

5. A rubber pendulum rebound testing machine according to claim 4, characterized in that, A mounting bracket (411) is fixedly connected to the fixed base (41), and the mounting bracket (411) is installed on the mounting base (3).

6. The rubber pendulum rebound testing machine according to claim 4, characterized in that, The fixed base (41) is provided with a slide rod (43), and the clamping base (44) is slidably connected to the outer peripheral wall of the slide rod (43).

7. A rubber pendulum rebound testing machine according to claim 4, characterized in that, A slide rail (42) is fixedly connected to the fixed seat (41), and a sliding seat (45) is fixedly connected to the outer peripheral wall of the clamping seat (44). The sliding seat (45) is slidably connected to the outer peripheral wall of the slide rail (42).

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