A rebound detection device for silicone rubber

Abstract

The utility model discloses a kind of rebound detection devices for silicone rubber, belong to detection equipment technical field, comprising: measuring base, the measuring base is fixedly connected with support column, the top of the support column is fixedly connected with sliding shell, the inside sliding connection of the sliding shell has sliding rod, the inside hinged of the sliding rod has rotating seat, in the rebound detection of silicone rubber in the utility model, different kinds of silicone rubber required measurement data are different, need different impact force to obtain more rebound data value, by setting air pressure acceleration structure, staff can start air pump, air pump is continuously injected gas to swing rod and inside pendulum by gas delivery pipe, when the air pressure inside pendulum reaches certain numerical value, by opening the different opening degree of metering discharge valve, different amount of gas is ejected, different acceleration is generated to pendulum when gas is ejected, and then the impact force of pendulum to silicone rubber is increased, satisfy the test demand of different silicone rubber.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a rebound testing device for silicone rubber. Background Technology

[0002] Silicone rubber, as a high-performance elastomer material, is widely used in automobile manufacturing, medical devices, electronics and electrical appliances and other fields due to its excellent resistance to high and low temperatures, aging resistance, electrical insulation and biocompatibility. In these application scenarios, the resilience of silicone rubber is one of the key indicators for measuring its quality. The resilience directly affects the material's sealing performance, shock absorption, fatigue resistance and service life.

[0003] In the testing of silicone rubber, a related technology is proposed in a patent entitled "Rubber Impact Testing Device" (publication number CN222189025U). This device requires clamping and adjustment before testing. First, the rubber is clamped and fixed. Then, the landing point of the pendulum is adjusted. Next, the pointer is zeroed. Finally, the pendulum is lifted and then released, causing it to swing and impact the rubber. After impact, the rubber rebounds, causing the pendulum to swing in the opposite direction. This reverse swing drives the pointer to rotate, thus measuring the rubber's rebound value. Existing rubber impact testing... After clamping and fixing the rubber, the device requires manual adjustment of the pendulum's landing position according to the rubber's thickness, which is cumbersome. However, by setting a connecting rod that connects the second rod and the clamping mechanism, the connecting rod can transmit power between the clamping mechanism and the second rod. When the clamping mechanism moves to clamp rubber of different thicknesses, it can drive the second rod to move synchronously through the connecting rod, causing the second rod to drive the pendulum to adjust its landing position. Thus, the detection device can automatically adjust the pendulum's landing position when clamping and fixing the rubber, eliminating the need to readjust the pendulum's landing position and simplifying the operation.

[0004] However, the overall process still relies on manual adjustment of the pendulum position. Furthermore, different speeds and forces are required when measuring different types of silicone rubber. In the existing measurement process, the force can only be adjusted by changing the pendulum to increase its amplitude, which has certain limitations. Therefore, a rebound detection device for silicone rubber is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a rebound testing device for silicone rubber to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rebound testing device for silicone rubber, comprising: a measuring base, a support column fixedly connected to the measuring base, a sliding housing fixedly connected to the top of the support column, a sliding rod slidably connected inside the sliding housing, a rotating seat hinged inside the sliding rod, a swing rod fixedly connected to the outside of the rotating seat, a pendulum fixedly connected to the bottom end of the swing rod, an electric drive structure installed outside the sliding rod, a pneumatic acceleration structure installed inside the sliding rod, and a clamping structure installed inside the measuring base;

[0007] The air pressure acceleration structure includes an air pump installed inside the sliding rod. The air outlet of the air pump is connected to a gas delivery pipe. The end of the gas delivery pipe away from the air pump passes through the inner wall of the rotating seat and is connected to the swing rod. The outside of the pendulum is connected to a metering discharge valve.

[0008] As a further preferred embodiment of this technical solution: the electric drive structure includes a bidirectional motor, which is fixedly connected to the outside of the sliding rod, and the output shaft of the bidirectional motor passes through the outer wall of the sliding rod and is fixedly connected to the rotating seat.

[0009] As a further preferred embodiment of this technical solution: the clamping structure includes a placement groove, which is opened inside the measuring base. A spring is fixedly connected inside the placement groove, and an electric push rod is fixedly connected to one end of the spring. A first snap-fit ​​plate is fixedly connected to the telescopic end of the electric push rod.

[0010] As a further preferred embodiment of this technical solution: a sliding groove is provided inside the placement groove, a metal slider is slidably connected inside the sliding groove, the outside of the metal slider is fixedly connected to the electric push rod, an electromagnet is fixedly connected to the bottom of the sliding groove, and a top-pressure positioning structure is installed on the outside of the first snap-fit ​​plate.

[0011] As a further preferred embodiment of this technical solution: the top pressure positioning structure includes two telescopic rods, the telescopic rods are fixedly connected to the outside of the first snap-fit ​​plate, and the telescopic ends of the telescopic rods are equipped with a second snap-fit ​​plate.

[0012] As a further preferred embodiment of this technical solution: a pressure sensor is installed on the outside of the pendulum, and the detection end of the pressure sensor penetrates through the outer wall of the pendulum and is connected to the internal cavity of the pendulum.

[0013] As a further preferred embodiment of this technical solution: a scale is mounted on the outside of the sliding rod, an elastic clamping knob is mounted on the outside of the scale, a pointer is mounted inside the elastic clamping knob, the pointer points to the scale, a push seat is hinged between the scale and the sliding rod, one end of the push seat passes through the outer wall of the sliding rod and is fixedly connected to the rotating seat.

[0014] As a further preferred embodiment of this technical solution: the swing rod is externally fixedly connected to a toggle locking seat, and the sliding rod is equipped with a lower locking seat.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, in the rebound test of silicone rubber, different types of silicone rubber require different measurement data and different impact forces to obtain more rebound data values. By setting up a pneumatic acceleration structure, the operator can start the air pump. The air pump continuously injects gas into the swing rod and pendulum through the gas delivery pipe. When the air pressure inside the pendulum reaches a certain value, the gas is ejected in different amounts by opening the metering discharge valve to different degrees. When the gas is ejected, it will produce different accelerations on the pendulum, thereby increasing the impact force of the pendulum on the silicone rubber, meeting the testing requirements of different silicone rubbers, expanding the data range of silicone rubber rebound, and improving the accuracy of measurement and calculation.

[0017] 2. In this utility model, by setting up an electric drive structure, the operator starts a bidirectional motor, which continuously drives the rotating seat to rotate, thereby causing the swing rod and pendulum to automatically rotate to a specified angle. After the bidirectional motor is turned off, the pendulum falls again due to gravity and impacts the silicone rubber, realizing automatic continuous impact of the pendulum on the silicone rubber. This function eliminates the need for manual adjustment of the pendulum position, simplifies the operation process, saves manpower, and improves detection efficiency. At the same time, during accelerated measurement, the silicone rubber can be placed between the top pressure positioning structure. During the fall of the pendulum, the electric push rod is activated to drive the silicone rubber to quickly impact the pendulum position, forming a bidirectional acceleration impact effect, further expanding the impact measurement range. Moreover, the entire process can be realized through automated control, further improving the convenience and efficiency of detection. Attached Figure Description

[0018] Figure 1 This is a first structural schematic diagram of a rebound testing device for silicone rubber according to the present invention.

[0019] Figure 2 This is a schematic diagram of the second structure of a rebound testing device for silicone rubber according to the present invention.

[0020] Figure 3This is a schematic diagram of the metering discharge valve and pressure sensor in a rebound detection device for silicone rubber according to the present invention.

[0021] Figure 4 This is a cross-sectional structural diagram of the measuring base in a rebound testing device for silicone rubber according to the present invention.

[0022] In the diagram: 1. Measuring base; 2. Support column; 3. Sliding housing; 4. Sliding rod; 5. Rotating seat; 6. Swing rod; 7. Bidirectional motor; 8. Dial; 9. Elastic clamping knob; 10. Pointer; 11. Pendulum; 12. Metering discharge valve; 13. Pressure sensor; 14. Push seat; 15. Placement slot; 16. Electric push rod; 17. Sliding slot; 18. Metal slider; 19. Electromagnet; 20. First locking plate; 21. Telescopic rod; 22. Second locking plate; 23. Actuating locking seat; 24. Lower locking seat; 25. Air pump; 26. Gas delivery pipe; 27. Spring. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Example 1

[0025] Please see Figures 1-4 This utility model provides a technical solution: a rebound detection device for silicone rubber, comprising: a measuring base 1, a support column 2 fixedly connected to the measuring base 1, a sliding housing 3 fixedly connected to the top of the support column 2, a sliding rod 4 slidably connected inside the sliding housing 3, a rotating seat 5 hinged inside the sliding rod 4, a swing rod 6 fixedly connected to the outside of the rotating seat 5, a pendulum 11 fixedly connected to the bottom end of the swing rod 6, an electric drive structure installed outside the sliding rod 4, a pneumatic acceleration structure installed inside the sliding rod 4, and a clamping structure installed inside the measuring base 1;

[0026] The air pressure acceleration structure includes an air pump 25, which is installed inside the sliding rod 4. The air outlet of the air pump 25 is connected to a gas delivery pipe 26. The end of the gas delivery pipe 26 away from the air pump 25 passes through the inner wall of the rotating seat 5 and is connected to the swing rod 6. The outside of the pendulum 11 is connected to a metering discharge valve 12.

[0027] In this embodiment, specifically: during the testing of silicone rubber, the operator can place the silicone rubber block to be tested into the clamping structure. After the silicone rubber block is placed, the operator can adjust the swing rod 6 and the pendulum 11 to a specified height, and release the pendulum 11 when the swing rod 6 and the pendulum 11 are adjusted to the specified height, so that the pendulum 11 falls due to gravity and impacts the silicone rubber block. After the impact, the pointer 10 indicates the impact value on the scale 8, thereby measuring the rebound value of the silicone rubber.

[0028] In this embodiment, specifically: during the measurement process, because there are many types of silicone rubber and the data to be measured are also different, different impact forces are required when facing different silicone rubbers to obtain more rebound data values. Therefore, the operator can start the air pump 25 and work with the gas delivery pipe 26 to continuously inject gas into the swing rod 6 and the pendulum 11. When the gas is continuously injected into the swing rod 6 and the pendulum 11 and the internal air pressure of the pendulum 11 reaches a certain value, the gas is ejected in different amounts by opening the metering discharge valve 12 at different degrees. Different amounts of gas will produce different accelerations on the pendulum 11, thereby increasing the impact force of the pendulum 11 on the silicone rubber through the gas acceleration, further increasing the rebound data range of the silicone rubber, and improving the measurement and calculation accuracy.

[0029] like Figures 1-4 As shown, a scale 8 is mounted on the outside of the sliding rod 4, and an elastic clamping knob 9 is mounted on the outside of the scale 8. A pointer 10 is mounted inside the elastic clamping knob 9, and the pointer 10 points to the scale 8. A push seat 14 is hinged between the scale 8 and the sliding rod 4. One end of the push seat 14 passes through the outer wall of the sliding rod 4 and is fixedly connected to the rotating seat 5. A toggle locking seat 23 is fixedly connected to the outside of the swing rod 6, and a lower locking seat 24 is mounted on the sliding rod 4.

[0030] In this embodiment, specifically: during manual testing, the operator adjusts the swing rod 6 and the pendulum 11 to the position where the toggle latch 23 and the lower latch 24 engage, thereby creating an engagement between the toggle latch 23 and the lower latch 24. After engagement, the swing rod 6 and the pendulum 11 can be fixed and limited. After fixing and limiting the swing rod 6 and the pendulum 11, the operator moves the lower latch 24, thereby separating the engagement between the lower latch 24 and the toggle latch 23. When the engagement is separated, the swing rod 6 and the pendulum 11 lose their limit and impact the silicone rubber on the clamping structure. During the impact, the pointer 10 loses its engagement with the elastic clamping knob 9 due to the vibration, and rotates under the influence of gravity. During the rotation, the pointer indicates the scale on the dial 8. When the vibration disappears, the elastic clamping knob 9 will press and limit the pointer 10 again, completing the measurement and positioning of the pointer 10.

[0031] like Figure 1 and Figure 2 As shown, the electric drive structure includes a bidirectional motor 7, which is fixedly connected to the outside of the sliding rod 4. The output shaft of the bidirectional motor 7 passes through the outer wall of the sliding rod 4 and is fixedly connected to the rotating seat 5.

[0032] In this embodiment, specifically: during the testing process, the staff can also start the bidirectional motor 7 to continuously drive the rotating seat 5 to rotate, thereby driving the rotating seat 5, the swing rod 6 and the pendulum 11 to automatically rotate to a specified angle. After rotating to the specified angle, the bidirectional motor 7 is turned off, so that the pendulum 11 falls and impacts again by gravity. The whole process realizes the automatic driving of the pendulum 11 to continuously impact the silicone rubber, saving manpower for continuous measurement.

[0033] like Figures 1-2 As shown, a pressure sensor 13 is installed on the outside of the pendulum 11. The detection end of the pressure sensor 13 penetrates the outer wall of the pendulum 11 and is connected to the internal cavity of the pendulum 11.

[0034] In this embodiment, specifically: during the process of continuously injecting gas into the pendulum 11, the gas pressure value inside the pendulum 11 can be observed through the pressure sensor 13.

[0035] Example 2

[0036] This utility model also provides another auxiliary measurement method, specifically:

[0037] like Figure 4As shown, the clamping structure includes a placement groove 15, which is opened inside the measuring base 1. A spring 27 is fixedly connected inside the placement groove 15. An electric push rod 16 is fixedly connected to one end of the spring 27. A first snap-fit ​​plate 20 is fixedly connected to the telescopic end of the electric push rod 16.

[0038] In this embodiment, specifically: during the conventional clamping measurement process, the first snap-fit ​​plate 20 can be pulled outward to place the silicone rubber between the first snap-fit ​​plate 20 and the measuring base 1 for clamping and fixing. During accelerated measurement, the silicone rubber can also be placed between the top pressure positioning structures. After placement, during the fall of the pendulum 11, the electric push rod 16 can be activated to drive the silicone rubber to quickly impact the position of the pendulum 11, thereby achieving a bidirectional acceleration impact effect and further expanding the impact measurement range. During the bidirectional accelerated impact, the acceleration of the pendulum 11 through the gas is measured on the one hand, and the acceleration of the silicone rubber moving rapidly driven by the electric push rod 16 is measured on the other hand, obtaining more range calculation values ​​and further increasing the measurement range.

[0039] like Figure 4 As shown, a sliding groove 17 is provided inside the placement groove 15. A metal slider 18 is slidably connected inside the sliding groove 17. The outside of the metal slider 18 is fixedly connected to the electric push rod 16. An electromagnet 19 is fixedly connected to the bottom of the sliding groove 17. A top pressure positioning structure is installed on the outside of the first snap-fit ​​plate 20.

[0040] In this embodiment, specifically: when the electric push rod 16 is activated, the operator also needs to activate the electromagnet 19 to magnetically attract the metal slider 18. When magnetic attraction occurs between the metal slider 18 and the electromagnet 19, the metal slider 18 can be attracted and fixed to the electric push rod 16.

[0041] like Figure 4 The top-pressure positioning structure shown includes two telescopic rods 21, which are fixedly connected to the outside of the first snap-fit ​​plate 20, and the telescopic ends of the telescopic rods 21 are equipped with a second snap-fit ​​plate 22.

[0042] In this embodiment, specifically: when placing silicone rubber, the distance between the first snap-fit ​​plate 20 and the telescopic rod 21 can be adjusted by adjusting the length of the telescopic rod 21, thereby facilitating the placement of silicone rubber of different thicknesses.

[0043] Working principle: When conducting silicone rubber testing, the operator first places the silicone rubber block to be tested into the clamping structure inside the measuring base 1. Specifically, the silicone rubber can be placed into the placement groove 15. By pulling out the first clamping plate 20, the silicone rubber is initially clamped and fixed using the first clamping plate 20 and the measuring base 1. Alternatively, the distance between the first clamping plate 20 and the second clamping plate 22 can be adjusted by adjusting the length of the telescopic rod 21 to accommodate silicone rubber of different thicknesses and achieve more precise clamping.

[0044] Next, the staff adjusted the swing rod 6 and the pendulum 11 to the designated height. During the manual test, the swing rod 6 and the pendulum 11 were adjusted to the position where the toggle locking seat 23 and the lower locking seat 24 were engaged, so that they were fixed and limited. Then, the lower locking seat 24 was moved to release the engagement. The pendulum 11 fell and hit the silicone rubber due to gravity. When it hit, the pointer 10 lost engagement with the elastic clamping knob 9 due to vibration. Under the action of gravity, it rotated and indicated the scale on the dial 8. After the vibration disappeared, the elastic clamping knob 9 pressed and limited the pointer 10 again, completing the measurement positioning. The rebound value of the silicone rubber can be initially measured by the scale value indicated by the pointer 10.

[0045] During the measurement process, due to the variety of silicone rubber types and the different measurement data required, different impact forces are needed for different silicone rubbers to obtain more rebound data values. At this time, the staff can start the air pump 25. The air pump 25 continuously injects gas into the swing rod 6 and the pendulum 11 through the gas delivery pipe 26. When the air pressure inside the pendulum 11 reaches a certain value, the gas is ejected in different amounts by opening the metering discharge valve 12 at different degrees. When the gas is ejected, it will produce different accelerations on the pendulum 11, thereby increasing the impact force of the pendulum 11 on the silicone rubber, expanding the rebound data range of the silicone rubber, and improving the measurement and calculation accuracy. During this process, the air pressure value inside the pendulum 11 can be observed through the pressure sensor 13.

[0046] In addition, staff can start the bidirectional motor 7, which continuously drives the rotating seat 5 to rotate, thereby driving the swing rod 6 and the pendulum 11 to automatically rotate to the specified angle. After the bidirectional motor 7 is turned off, the pendulum 11 falls again due to gravity and hits the silicone rubber, thus automatically driving the pendulum 11 to continuously hit the silicone rubber, saving manpower.

[0047] During accelerated measurement, silicone rubber can be placed between the top pressure positioning structures. During the fall of the pendulum 11, the electric push rod 16 is activated to drive the silicone rubber to impact the position of the pendulum 11 quickly, forming a bidirectional acceleration impact effect, which further expands the impact measurement range. During the bidirectional accelerated impact, the acceleration of the pendulum 11 through the gas is measured on the one hand, and the acceleration of the silicone rubber moving rapidly driven by the electric push rod 16 is measured on the other hand, thereby obtaining more range calculation values ​​and increasing the measurement range. When the electric push rod 16 is activated, the electromagnet 19 should be activated at the same time to magnetically attract the metal slider 18, so that the metal slider 18 is attracted and fixed to the electric push rod 16, ensuring that the electric push rod 16 works stably.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rebound testing device for silicone rubber, characterized in that, include: A measuring base (1) is fixedly connected to a support column (2). A sliding housing (3) is fixedly connected to the top of the support column (2). A sliding rod (4) is slidably connected inside the sliding housing (3). A rotating seat (5) is hinged inside the sliding rod (4). A swing rod (6) is fixedly connected to the outside of the rotating seat (5). A pendulum (11) is fixedly connected to the bottom end of the swing rod (6). An electric drive structure is installed outside the sliding rod (4). A pneumatic acceleration structure is installed inside the sliding rod (4). A clamping structure is installed inside the measuring base (1). The air pressure acceleration structure includes an air pump (25), which is installed inside the sliding rod (4). The air outlet of the air pump (25) is connected to a gas delivery pipe (26). One end of the gas delivery pipe (26) away from the air pump (25) passes through the inner wall of the rotating seat (5) and is connected to the swing rod (6). The outside of the pendulum (11) is connected to a metering discharge valve (12).

2. The rebound testing device for silicone rubber according to claim 1, characterized in that: The electric drive structure includes a bidirectional motor (7), which is fixedly connected to the outside of the sliding rod (4). The output shaft of the bidirectional motor (7) passes through the outer wall of the sliding rod (4) and is fixedly connected to the rotating seat (5).

3. The rebound testing device for silicone rubber according to claim 1, characterized in that: The clamping structure includes a placement groove (15), which is opened inside the measuring base (1). A spring (27) is fixedly connected inside the placement groove (15). An electric push rod (16) is fixedly connected to one end of the spring (27). A first snap-fit ​​plate (20) is fixedly connected to the telescopic end of the electric push rod (16).

4. The rebound testing device for silicone rubber according to claim 3, characterized in that: The placement groove (15) has a sliding groove (17) inside, and a metal slider (18) is slidably connected inside the sliding groove (17). The outside of the metal slider (18) is fixedly connected to the electric push rod (16). An electromagnet (19) is fixedly connected to the bottom of the sliding groove (17). A top pressure positioning structure is installed on the outside of the first snap-fit ​​plate (20).

5. The rebound testing device for silicone rubber according to claim 4, characterized in that: The top-pressing positioning structure includes two telescopic rods (21), which are fixedly connected to the outside of the first snap-fit ​​plate (20), and the telescopic end of the telescopic rod (21) is equipped with a second snap-fit ​​plate (22).

6. The rebound testing device for silicone rubber according to claim 1, characterized in that: A pressure sensor (13) is installed on the outside of the pendulum (11). The detection end of the pressure sensor (13) penetrates the outer wall of the pendulum (11) and is connected to the internal cavity of the pendulum (11).

7. The rebound testing device for silicone rubber according to claim 1, characterized in that: A scale (8) is mounted on the outside of the sliding rod (4), and an elastic clamping knob (9) is mounted on the outside of the scale (8). A pointer (10) is mounted inside the elastic clamping knob (9), and the pointer (10) points to the scale (8). A push seat (14) is hinged between the scale (8) and the sliding rod (4). One end of the push seat (14) passes through the outer wall of the sliding rod (4) and is fixedly connected to the rotating seat (5).

8. The rebound testing device for silicone rubber according to claim 1, characterized in that: The swing rod (6) is externally fixedly connected to a toggle latch (23), and the sliding rod (4) is equipped with a lower latch (24).

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