Medical rubber ring pulling force detection device and detection method

Abstract

The present invention relates to the technical field of rubber ring detection, and discloses a medical rubber ring pulling force detection device and detection method, comprising a side plate fixed on the top of a bottom plate, the outer wall of the side plate is installed with a detection box that can slide vertically, the inner wall of the detection box is installed with two power rods that can slide relative to and opposite to each other, the bottom of the two power rods are fixedly installed with sliding sleeves, and the inner walls of the two sliding sleeves are slidably installed with pulling rods. The present invention drives two pulling blocks to stretch the medical rubber ring through an external structure, and in this process, two conductive blocks are in contact with the medical rubber ring and make it conductive, and a detection device is used to detect the sliding distance of the pulling rod into the sliding sleeve to determine whether the elasticity of the medical rubber ring has changed, thereby determining whether its pulling force has changed, and then the strength of the medical rubber ring can be further determined, ensuring the safety of the equipment during use and preventing accidents caused by the degradation of the rubber ring performance.

Description

Technical Field

[0001] The invention relates to the technical field of rubber ring detection, in particular to a medical rubber ring pulling force detection device and a detection method. Background Art

[0002] Medical rubber rings are a key component widely used in medical devices. They have good elasticity, durability and biocompatibility. They are often used to ensure the sealing of the equipment, provide electrical insulation and conduct current. Medical rubber rings can play an important role in various complex medical environments to ensure the safety and effectiveness of the equipment. Therefore, strength testing of rubber rings is particularly important.

[0003] For example, the Chinese patent with publication number CN112378760A discloses a rubber ring strength detection device with a bidirectional stretching mechanism, which includes a set stretching mechanism and a mobile stretching mechanism. The mobile stretching mechanism is fixedly installed on the set stretching mechanism. When the tensile strength of a rubber ring with a smaller diameter is detected, the rubber ring is set in a set groove provided in a fixed box seat, and the turntable is driven by a driving motor to rotate so that an arc-shaped support rod passes through the rod outlet to perform a stretching detection on the rubber ring, which can well simulate the stretching of the rubber ring in the set state, making the tensile strength detection of the rubber ring more specific; when the tensile strength of a rubber ring with a larger diameter is detected, one end of the rubber ring is set in the set groove and the other end is set on the arc-shaped positioning plate, and the push rod welded on the side of the slot connection block is pushed so that the set rod drives the moving block to move, and the arc-shaped positioning plate completes the tensile detection of the rubber ring, which is convenient for detecting the tensile strength of rubber rings with different diameters.

[0004] The detection device can perform a stretching test on the rubber ring to detect its strength, and can simulate the stretching of the rubber ring in a suit state, so that the tensile strength test of the rubber ring is more specific.

[0005] However, in electrical stimulation devices and wearable medical devices, the conductive rubber ring not only ensures good contact between the electrode and the skin, but also needs to be able to conduct weak current to optimize the treatment effect. However, the current may affect the elasticity and performance of the rubber ring, thereby affecting subsequent use. Therefore, it is particularly important to perform strength testing on the medical rubber ring in the energized state. Summary of the invention

[0006] The object of the present invention is to provide a medical rubber ring pulling force detection device and detection method to solve at least one technical problem existing in the above-mentioned prior art.

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention provides the following technical solutions: a medical rubber ring pulling force detection device, comprising a side plate fixed on the top of a bottom plate, a detection box that can be vertically slidably adjusted is installed on the outer wall of the side plate, two power rods that can slide relative to and away from each other are installed on the inner wall of the detection box, a sliding sleeve is fixedly installed at the bottom of the two power rods, a pulling rod is slidably installed on the inner wall of the two sliding sleeves, a pulling block is fixedly installed at one end of the two pulling rods away from the power rod, a spring is installed between the outer wall of the two pulling blocks and the corresponding power rod, and when the two power rods move away from each other, the two pulling blocks can stretch the medical rubber ring;

[0008] It also includes two conductive blocks respectively fixed at opposite ends of the two pulling blocks, and when the two conductive blocks are in contact with the medical rubber ring, they can be energized;

[0009] The invention also comprises a detection device installed on the top of the sliding sleeve, and the detection device can detect the sliding distance of the pulling rod.

[0010] Preferably, two sliding rods are vertically slidably installed on the inner wall of the detection box, and a second connecting rod and a third connecting rod are rotatably installed between the outer walls of the two sliding rods and the corresponding power rods. Two fourth connecting rods are rotatably installed on the inner wall of the detection box, and one end of the two fourth connecting rods is rotatably connected to the corresponding third connecting rod. A connecting rod is fixedly connected between the two sliding rods, and a control rod that can be vertically slidably adjusted is installed on the top of the connecting rod.

[0011] Preferably, it further comprises a circulation assembly, wherein the circulation assembly comprises a rotating ring and a limiting ring rotatably mounted on the outer wall of the side plate, wherein the centers of the rotating ring and the limiting ring are located at different positions on the same vertical plane, and the rotating ring and the limiting ring are congruently arranged;

[0012] The circulation component also includes several groups of circulation parts, which include a pin shaft that passes through and is rotatably installed on the outer wall of the rotating ring. A first connecting rod is fixedly installed on one end of the pin shaft, and the end of the first connecting rod away from the pin shaft is rotatably connected to the limit ring, and the first connecting rod always remains in a vertical state. The other end of the pin shaft is fixedly connected to a holding plate that remains perpendicular to the first connecting rod, and the medical rubber ring is placed in the holding plate.

[0013] Preferably, the outer walls of the two sliding sleeves can be sleeved with each other, and a power source is fixedly mounted on the inner wall of the smaller sliding sleeve, and the two conductive blocks are connected to the power source via current-carrying wires.

[0014] Preferably, a slide rail is fixedly mounted on the outer wall of the side panel, an electric slider is slidably mounted on the slide rail, and the detection box is fixedly connected to the electric slider.

[0015] Preferably, the detection device is a distance sensor fixed on the top of the sliding sleeve, and a through hole is provided on the top of the sliding sleeve for the distance sensor to monitor the pulling rod.

[0016] Preferably, the end of the pulling block in contact with the medical rubber ring is configured to be semicircular.

[0017] Preferably, a square groove is formed on the top of the containing plate, and two symmetrically arranged positioning blocks are fixedly mounted on the inner wall of the square groove.

[0018] Preferably, when the two pulling blocks stretch the medical rubber ring, the electric sliding block will move upward for adjustment.

[0019] The second aspect of the present invention provides the following technical solution: a method for detecting the pulling force of a medical rubber ring, the detection method comprising the following steps:

[0020] In the first step, the medical rubber ring to be tested is transported to the bottom of the test box through the circulation component, and the test box is adjusted to move downward, thereby driving the power rod, the pulling rod and the pulling block to move downward, so that the two pulling blocks are in the medical rubber ring to be tested;

[0021] The second step is to drive the two power rods to move in opposite directions through the external driving structure, so that the two drive the sliding sleeve to move in the direction close to the medical rubber ring, and under the action of the spring, the pulling block and the pulling rod are moved in the direction close to the medical rubber ring;

[0022] In the third step, when the two pulling blocks come into contact with the medical rubber ring, the medical rubber ring will be stretched to both ends, and under the reaction force of the medical rubber ring, the two pulling blocks will respectively drive the corresponding pulling rods to slide in the direction close to the sliding sleeve until the elastic force of the pulling rod on the pulling block and the reaction force of the medical rubber ring on the pulling block are offset, and in this process, the two conductive blocks will both come into contact with the medical rubber ring and make it conductive;

[0023] Step 4: Under the premise that the power rod moves a certain distance, if the elasticity of the medical rubber ring is reduced under the action of the current, the reaction force of the medical rubber ring on the pulling block will increase, so that the pulling block will drive the pulling rod to move a farther distance in the direction close to the sliding sleeve;

[0024] The fifth step is to remove a medical rubber ring through the circulation component after the test is completed, and transport the next medical rubber ring to the bottom of the test box for testing. The periodic pulling and power-on process is repeated many times to simulate the cyclic stress of the rubber ring in actual use, and record the pulling force of the medical rubber ring after different power-on times, and evaluate the strength of the medical rubber ring through the periodic pulling force.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention drives two pulling blocks to stretch the medical rubber ring through an external structure, and in this process makes the two conductive blocks contact the medical rubber ring and make it conductive. The detection device detects the sliding distance of the pulling rod into the sliding sleeve to determine whether the elasticity of the medical rubber ring has changed, thereby determining whether its pulling force has changed, and further determining the strength of the medical rubber ring, thereby ensuring the safety of the equipment during use and preventing accidents caused by the degradation of the rubber ring performance.

[0027] 2. The present invention controls the cylinder to make the two pulling blocks move a short distance in opposite directions first, so that the medical rubber ring produces a slight deformation, and then the two pulling blocks will approach each other, so that the stretched medical rubber ring will self-repair its position under the action of elasticity and the limiting action of the two pulling blocks, so that its center coincides with the original center. When the control rod passes the horizontal state, the two pulling blocks will move in opposite directions again, thereby completing the stretching of the medical rubber ring, so as to facilitate subsequent testing, to ensure that the deviation of the medical rubber ring will not cause inaccurate results during the testing process, and reduce the contingency in the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view of the present invention;

[0029] Figure 2 A perspective view of the present invention;

[0030] Figure 3 is a three-dimensional cross-sectional view of the present invention;

[0031] Figure 4 It is a three-dimensional schematic diagram of the detection box and the containing plate in the present invention;

[0032] Figure 5 It is a right schematic diagram of the detection box and the containing plate in the present invention;

[0033] Figure 6 For the present invention Figure 5 Sectional view at AA;

[0034] Figure 7 For the present invention Figure 5 Sectional view at the middle BB;

[0035] Figure 8 It is a schematic diagram of the state after the sliding rod in the present invention slides upward;

[0036] Fig. 9 It is a schematic diagram of the state after the sliding rod in the present invention slides downward;

[0037] Fig.10It is a schematic diagram of the state when the medical rubber ring of the present invention is offset.

[0038] In the figure: 1. bottom plate; 2. side plate; 3. slide rail; 4. electric slider; 5. detection box; 6. rotating ring; 7. limit ring; 8. first connecting rod; 9. pin shaft; 10. medical rubber ring; 11. holding plate; 12. positioning block; 13. pulling block; 14. pulling rod; 15. spring; 16. sliding sleeve; 17. conductive block; 18. energized wire; 19. power rod; 20. distance sensor; 21. power supply; 22. sliding rod; 23. second connecting rod; 24. third connecting rod; 25. fourth connecting rod; 26. connecting rod; 27. control rod. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 10 The present invention provides a technical solution: comprising a side plate 2 fixed on the top of a bottom plate 1, a detection box 5 capable of vertical sliding adjustment is installed on the outer wall of the side plate 2, two power rods 19 capable of relative and opposite sliding adjustment are installed on the inner wall of the detection box 5, a sliding sleeve 16 is fixedly installed at the bottom of the two power rods 19, a pulling rod 14 is slidably installed on the inner wall of the two sliding sleeves 16, a pulling block 13 is fixedly installed at one end of the two pulling rods 14 away from the power rod 19, a spring 15 is installed between the outer wall of the two pulling blocks 13 and the corresponding power rod 19, and when the two power rods 19 move away from each other, the two pulling blocks 13 can stretch the medical rubber ring 10;

[0041] It also includes two conductive blocks 17 respectively fixed at opposite ends of the two pulling blocks 13, and when the two conductive blocks 17 are in contact with the medical rubber ring 10, they can be energized;

[0042] The device further comprises a detection device installed on the top of the sliding sleeve 16 , and the detection device can detect the sliding distance of the pulling rod 14 .

[0043] See also Figure 1 , Figure 2 as well as Figure 3When the device is used, the medical rubber ring 10 to be tested is first transported to the bottom of the test box 5 through the circulation component, and the test box 5 is adjusted to move downward, thereby driving the power rod 19, the pulling rod 14 and the pulling block 13 to move downward, so that the two pulling blocks 13 are in the medical rubber ring 10 to be tested, and the two power rods 19 are driven by the external driving structure to move in the opposite direction, so that the two springs 15 respectively drive the corresponding pulling blocks 13 to move in the direction close to the medical rubber ring 10, and then through the two pulling blocks 13 The reverse movement of the two pulling blocks 13 pulls and deforms the medical rubber ring 10. At the same time, the conductive blocks 17 at the ends of the two pulling blocks 13 will contact the medical rubber ring 10 and make it conductive. In addition, when the two pulling blocks 13 pull the medical rubber ring 10, the pulling blocks 13 will be subjected to the reaction force of the medical rubber ring 10. Under the reaction force of the medical rubber ring 10, the two pulling blocks 13 will respectively drive the corresponding pulling rods 14 to slide in the direction close to the sliding sleeve 16 until the elastic force of the pulling rod 14 on the pulling block 13 and the medical rubber ring 10 are equal. The reaction force of the rubber ring 10 on the pulling block 13 is offset. At this time, the pulling block 13 and the spring 15 are in a static state. The detection device is used to record the sliding distance of the pulling rod 14 to determine whether the current passed into the medical rubber ring 10 will change the elasticity of the medical rubber ring 10. If the introduced current causes the elasticity of the medical rubber ring 10 to decrease, the pulling block 13 will be subjected to an increased reaction force from the medical rubber ring 10 when stretching the medical rubber ring 10, which will cause the spring 15 to be further compressed to accumulate greater elastic potential energy to offset the reaction force of the medical rubber ring 10 on the pulling block 13. In this process, the pulling rod 14 slides a farther distance in the sliding sleeve 16. The detection device is used to detect the sliding distance of the pulling rod 14 into the sliding sleeve 16, which can determine whether the elasticity of the medical rubber ring 10 has changed, thereby determining whether its pulling force has changed, and further determining the strength of the medical rubber ring 10, thereby ensuring the safety of the equipment during use and preventing accidents caused by the degradation of the rubber ring performance.

[0044] If the medical rubber ring 10 passes the test, it is removed by the circulation component, and the next medical rubber ring 10 to be tested is transported to the bottom of the test box 5, and its performance is tested in the same way as above. After the first medical rubber ring 10 is cooled, it is transported to the bottom of the test box 5 again by the circulation component, and tested again by the above process. In this way, the medical rubber ring 10 is periodically pulled and powered on, which can simulate the cyclic stress of the medical rubber ring 10 in actual use. The distance moved by the pulling rod 14 during each pulling process is recorded by the detection device, and the data is analyzed to evaluate the strength of the medical rubber ring 10. In this process, the influence of the number of power-on times on the performance of the medical rubber ring 10 can be further found.

[0045] Moreover, it is worth mentioning that the pulling of the medical rubber ring 10 can also make it contact more closely with the conductive block 17, thereby ensuring stability when powered on, so as to improve the accuracy of the detection result.

[0046] Furthermore, two sliding rods 22 are vertically slidably installed on the inner wall of the detection box 5, and a second connecting rod 23 and a third connecting rod 24 are rotatably installed between the outer walls of the two sliding rods 22 and the corresponding power rods 19. Two fourth connecting rods 25 are rotatably installed on the inner wall of the detection box 5, and one end of the two fourth connecting rods 25 is rotatably connected to the corresponding third connecting rod 24. A connecting rod 26 is fixedly connected between the two sliding rods 22, and a control rod 27 that can be vertically slidably adjusted is installed on the top of the connecting rod 26.

[0047] When the circulation assembly transports the medical rubber ring 10 to be tested to the bottom of the test box 5, the test box 5 is driven downward by the external structure, so that the two pulling blocks 13 are located in the medical rubber ring 10. Figure 7 At this time, it is the initial state of the device. The control rod 27 is adjusted upward by the cylinder fixed on the top of the detection box 5, and then the two sliding rods 22 are driven to move upward through the connecting rod 26. Under the cooperation of the second connecting rod 23, the third connecting rod 24 and the fourth connecting rod 25, the two power rods 19 will move in opposite directions, thereby driving the two sliding sleeves 16 to move in opposite directions, and then driving the two pulling blocks 13 to move in opposite directions. In this process, the medical rubber ring 10 is stretched and energized (which has been explained in the above embodiment and will not be repeated here), and the sliding distance of the pulling rod 14 in the sliding sleeve 16 is recorded by the detection device to judge the elastic change of the medical rubber ring 10.

[0048] However, in actual use, when the circulation component moves the medical rubber ring 10 to the bottom of the detection box 5, the medical rubber ring 10 may slide on the circulation component, causing the center of the medical rubber ring 10 to be offset from the center projection of the detection box 5. At this time, when the two pulling blocks 13 are placed in the medical rubber ring 10 through the external structure, the following situation may occur: Fig.10 In the situation shown, when the two pulling blocks 13 move in opposite directions, the pulling force at the upper and lower ends of the medical rubber ring 10 may be uneven under the action of friction, which may lead to uneven distribution of the conductive filler in the medical rubber ring 10, thereby affecting the resistance value. For example, the side with greater force at the bottom may be over-stretched, resulting in a longer conductive path and increased resistance. In addition, the greater pulling force at the bottom will cause stress concentration at the bottom, making the rubber material more susceptible to cracks or wear. This situation will affect the conductive performance and the overall structural strength, and even affect the results of subsequent tests. Therefore, this embodiment proposes an improvement measure, which is specifically as follows:

[0049] In the above-mentioned scheme, the control rod 27 is driven by the cylinder fixed on the top of the detection box 5 to move upward, thereby driving the two pulling blocks 13 to stretch the medical rubber ring 10 (such as Figure 8 If the Fig.10 The offset condition may lead to inaccurate detection results and may damage the medical rubber ring 10. Therefore, on this basis, in the initial state, the control rod 27 is adjusted downward by the cylinder, and the two power rods 19 are moved in opposite directions under the cooperation of the second connecting rod 23, the third connecting rod 24 and the fourth connecting rod 25. Moreover, compared with the previous adjustment method, the same displacement of the control rod 27 will cause the power rod 19 to move a shorter distance (such as Fig. 9 As shown in the figure, when the medical rubber ring 10 is initially stretched, it will not cause excessive force on the medical rubber ring 10 to prevent it from breaking. After that, the control rod 27 is driven by the cylinder to move upward for adjustment, that is, the control rod 27 moves downward first and then upward, corresponding to the action of the two pulling blocks 13: the two pulling blocks 13 first move a short distance in opposite directions, so that the medical rubber ring 10 produces a slight deformation, and then the two pulling blocks 13 will approach each other, so that the pulled medical rubber ring 10 will self-repair its position under the action of elasticity and the limiting action of the two pulling blocks 13, so that its center coincides with the original center. When the control rod 27 passes over Figure 8 In the state, the two pulling blocks 13 will move in opposite directions again, thereby completing the stretching of the medical rubber ring 10, so as to facilitate subsequent testing, to ensure that the results will not be inaccurate due to the deviation of the medical rubber ring 10 during the testing process, and to reduce the contingency during the test process.

[0050] Furthermore, it also includes a circulation assembly, which includes a rotating ring 6 and a limiting ring 7 rotatably mounted on the outer wall of the side plate 2, the centers of the rotating ring 6 and the limiting ring 7 are located at different positions on the same vertical plane, and the rotating ring 6 and the limiting ring 7 are congruently arranged;

[0051] The circulation component also includes several groups of circulation parts, which include a pin shaft 9 that passes through and is rotatably installed on the outer wall of the rotating ring 6. A first connecting rod 8 is fixedly installed on one end of the pin shaft 9. The end of the first connecting rod 8 away from the pin shaft 9 is rotatably connected to the limit ring 7, and the first connecting rod 8 always remains in a vertical state. The other end of the pin shaft 9 is fixedly connected to a holding plate 11 that remains perpendicular to the first connecting rod 8, and a medical rubber ring 10 is placed in the holding plate 11.

[0052] See also Figure 1 as well as Figure 2The rotating ring 6 is driven to rotate by a motor fixed to the outer wall of the side plate 2. When the rotating ring 6 rotates, the top containing plate 11 is transported downward, and the next containing plate 11 is transported to the bottom of the detection box 5. Under the cooperation of the first connecting rod 8 and the limiting ring 7, the containing plate 11 is always kept in a horizontal state. The horizontal state can reduce the deviation of the medical rubber ring 10 due to tilting or turning during the transportation process, and prevent errors caused by other factors before detection. Maintaining the horizontal state can also ensure that the medical rubber ring 10 is in a stable position when entering the detection equipment, thereby improving the accuracy of the detection result.

[0053] It is worth mentioning that every time a new holding plate 11 is transported to the bottom of the testing box 5 , the motor will stop running for a period of time, and will restart again after the medical rubber ring 10 therein is tested, so as to facilitate the transport of the next holding plate 11 to the bottom of the testing box 5 .

[0054] Furthermore, the outer walls of the two sliding sleeves 16 can be sleeved with each other, and a power source 21 is fixedly mounted on the inner wall of the smaller sliding sleeve 16 , and both of the two conductive blocks 17 are connected to the power source 21 via the current-carrying wires 18 .

[0055] See also Figure 6 The outer walls of the two sliding sleeves 16 can be sleeved with each other, which can make the entire device more stable during operation, so that the pulling rod 14 can always maintain horizontal sliding when subjected to the reaction force of the medical rubber ring 10 to prevent it from angular deviation.

[0056] The conductive block 17 is connected to the power source 21 through the power-carrying wire 18, so that when the two conductive blocks 17 are in contact with the medical rubber ring 10, the medical rubber ring 10 will be conductive, so as to facilitate the subsequent detection process. In addition, the outer shell of the power-carrying wire 18 is made of deformable material to prevent the power-carrying wire 18 from being separated from the power source 21 when the pulling rod 14 slides in the sliding sleeve 16.

[0057] Furthermore, a slide rail 3 is fixedly installed on the outer wall of the side plate 2 , an electric slider 4 is slidably installed on the slide rail 3 , and the detection box 5 is fixedly connected to the electric slider 4 .

[0058] See also Figure 3 , the electric slider 4 can realize automatic operation, reduce manual intervention, speed up the detection process, shorten the time, and improve the detection efficiency.

[0059] Furthermore, the detection device is a distance sensor 20 fixed on the top of the sliding sleeve 16 , and a through hole is provided on the top of the sliding sleeve 16 for the distance sensor 20 to monitor the pulling rod 14 .

[0060] Referring to the rotating ring 6, the degree of change in the elastic force of the medical rubber ring 10 may be very small. The distance sensor 20 has a high-precision measurement capability and can accurately record the displacement of the pulling rod 14 to ensure the accuracy of the detection result.

[0061] Furthermore, the end of the pulling block 13 that contacts the medical rubber ring 10 is set to be semicircular.

[0062] The semicircular design helps to evenly distribute stress and reduce stress concentration, thus avoiding premature damage or wear of the sealing ring due to stress concentration, and can reduce the uneven deformation of the medical rubber ring 10 during the pulling process, maintaining its original shape and elastic properties to ensure the reliability of the test results.

[0063] Furthermore, a square groove is formed on the top of the containing plate 11, and two symmetrically arranged positioning blocks 12 are fixedly mounted on the inner wall of the square groove.

[0064] See also Figure 4 A square groove is opened in the containing plate 11. The staff places the medical rubber ring 10 between the two positioning blocks 12 in the initial stage. The positioning blocks 12 are used to preliminarily fix the medical rubber ring 10 to prevent it from shifting during the circulation transportation process. Moreover, if a shift occurs, the probability of resetting the medical rubber ring 10 can be increased by cooperating with the above-mentioned improvement measures, so as to reduce the deviation of the detection results caused by accidental factors.

[0065] Furthermore, when the two pulling blocks 13 stretch the medical rubber ring 10 , the electric slider 4 will move upward for adjustment.

[0066] When the two pulling blocks 13 are driven by the cylinder to support the medical rubber ring 10, the electric slider 4 will move upward a short distance to separate the medical rubber ring 10 from the top of the holding plate 11, thereby preventing the medical rubber ring 10 from being subjected to the friction force of the top of the holding plate 11 during the subsequent stretching process, thereby affecting the detection result.

[0067] A method for detecting the pulling force of a medical rubber ring comprises the following steps:

[0068] In the first step, the medical rubber ring 10 to be tested is transported to the bottom of the test box 5 through the circulation component, and the test box 5 is adjusted to move downward, thereby driving the power rod 19, the pulling rod 14 and the pulling block 13 to move downward, so that the two pulling blocks 13 are in the medical rubber ring 10 to be tested;

[0069] In the second step, the two power rods 19 are driven by the external driving structure to move in opposite directions, so that the two drive the sliding sleeve 16 to move toward the medical rubber ring 10, and under the action of the spring 15, the pulling block 13 and the pulling rod 14 are both moved toward the medical rubber ring 10;

[0070] In the third step, when the two pulling blocks 13 come into contact with the medical rubber ring 10, the medical rubber ring 10 will be stretched toward both ends, and under the reaction force of the medical rubber ring 10, the two pulling blocks 13 will respectively drive the corresponding pulling rods 14 to slide toward the sliding sleeve 16 until the elastic force of the pulling rod 14 on the pulling block 13 and the reaction force of the medical rubber ring 10 on the pulling block 13 are offset, and in this process, the two conductive blocks 17 will both come into contact with the medical rubber ring 10 and make it conductive;

[0071] Step 4: Under the premise that the power rod 19 moves a certain distance, if the elasticity of the medical rubber ring 10 is reduced under the action of the current, the reaction force of the medical rubber ring 10 on the pulling block 13 will increase, so that the pulling block 13 will drive the pulling rod 14 to move a farther distance in the direction close to the sliding sleeve 16;

[0072] In the fifth step, after the inspection of one medical rubber ring 10 is completed, it is removed by the circulation component, and the next medical rubber ring 10 is transported to the bottom of the inspection box 5 for inspection. The periodic pulling and power-on process is repeated many times to simulate the cyclic stress of the rubber ring in actual use, and the pulling force of the medical rubber ring 10 after different power-on times is recorded, and the strength of the medical rubber ring 10 is evaluated by the periodic pulling force.

[0073] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical rubber ring pulling force detection device, comprising a side plate (2) fixed on the top of a bottom plate (1), characterized in that: The outer wall of the side plate (2) is provided with a detection box (5) capable of vertical sliding adjustment, and the inner wall of the detection box (5) is provided with two power rods (19) capable of relative and opposite sliding adjustment, the bottoms of the two power rods (19) are fixedly provided with sliding sleeves (16), the inner walls of the two sliding sleeves (16) are slidably provided with pulling rods (14), the ends of the two pulling rods (14) away from the power rods (19) are fixedly provided with pulling blocks (13), springs (15) are provided between the outer walls of the two pulling blocks (13) and the corresponding power rods (19), and when the two power rods (19) move away from each other, the two pulling blocks (13) can stretch the medical rubber ring (10); It also includes two conductive blocks (17) respectively fixed to opposite ends of the two pulling blocks (13), and when the two conductive blocks (17) are in contact with the medical rubber ring (10), they can be energized; It also comprises a detection device installed on the top of the sliding sleeve (16), and the detection device can detect the sliding distance of the pulling rod (14).

2. The medical rubber ring pulling force detection device according to claim 1, characterized in that: Two sliding rods (22) are vertically slidably installed on the inner wall of the detection box (5); a second connecting rod (23) and a third connecting rod (24) are rotatably installed between the outer walls of the two sliding rods (22) and the corresponding power rod (19); two fourth connecting rods (25) are rotatably installed on the inner wall of the detection box (5); one end of the two fourth connecting rods (25) is rotatably connected to the corresponding third connecting rod (24); a connecting rod (26) is fixedly connected between the two sliding rods (22); a control rod (27) capable of vertical sliding adjustment is installed on the top of the connecting rod (26).

3. The medical rubber ring pulling force detection device according to claim 1, characterized in that: It also includes a circulation component, the circulation component including a rotating ring (6) and a limiting ring (7) rotatably mounted on the outer wall of the side plate (2), the centers of the rotating ring (6) and the limiting ring (7) being located at different positions on the same vertical plane, and the rotating ring (6) and the limiting ring (7) being arranged congruently; The circulation assembly also includes a plurality of circulation parts, each of which includes a pin shaft (9) penetrating through and rotatably mounted on the outer wall of the rotating ring (6); a first connecting rod (8) is fixedly mounted on one end of the pin shaft (9); an end of the first connecting rod (8) away from the pin shaft (9) is rotatably connected to a limiting ring (7), and the first connecting rod (8) always remains in a vertical state; the other end of the pin shaft (9) is fixedly connected to a containing plate (11) which remains perpendicular to the first connecting rod (8); and the medical rubber ring (10) is placed in the containing plate (11).

4. The medical rubber ring pulling force detection device according to claim 2, characterized in that: The outer walls of the two sliding sleeves (16) can be sleeved with each other, and a power source (21) is fixedly mounted on the inner wall of the smaller sliding sleeve (16), and the two conductive blocks (17) are connected to the power source (21) via a current-carrying wire (18).

5. The medical rubber ring pulling force detection device according to claim 2, characterized in that: A slide rail (3) is fixedly mounted on the outer wall of the side plate (2), an electric slider (4) is slidably mounted on the slide rail (3), and the detection box (5) is fixedly connected to the electric slider (4).

6. The medical rubber ring pulling force detection device according to claim 2, characterized in that: The detection device is a distance sensor (20) fixed on the top of the sliding sleeve (16), and a through hole is provided on the top of the sliding sleeve (16) for the distance sensor (20) to monitor the pulling rod (14).

7. The medical rubber ring pulling force detection device according to any one of claims 1 to 6, characterized in that: The end of the pulling block (13) that contacts the medical rubber ring (10) is designed to be semicircular.

8. The medical rubber ring pulling force detection device according to claim 3, characterized in that: A square groove is provided on the top of the containing plate (11), and two symmetrically arranged positioning blocks (12) are fixedly mounted on the inner wall of the square groove.

9. The medical rubber ring pulling force detection device according to claim 5, characterized in that: When the two pulling blocks (13) stretch the medical rubber ring (10), the electric slider (4) will move upward for adjustment.

10. A method for detecting the pulling force of a medical rubber ring using the medical rubber ring pulling force detection device according to claim 3, characterized in that: The detection method comprises the following steps: In the first step, the medical rubber ring (10) to be tested is transported to the bottom of the test box (5) through the circulation component, and the test box (5) is adjusted to move downward, thereby driving the power rod (19), the pulling rod (14) and the pulling block (13) to move downward, so that the two pulling blocks (13) are located in the medical rubber ring (10) to be tested; In the second step, the two power rods (19) are driven to move in opposite directions through an external driving structure, so that the two power rods (19) drive the sliding sleeve (16) to move in a direction close to the medical rubber ring (10), and under the action of the spring (15), the pulling block (13) and the pulling rod (14) are both moved in a direction close to the medical rubber ring (10); In the third step, when the two pulling blocks (13) are in contact with the medical rubber ring (10), the medical rubber ring (10) will be stretched toward both ends, and under the reaction force of the medical rubber ring (10), the two pulling blocks (13) will respectively drive the corresponding pulling rods (14) to slide in the direction close to the sliding sleeve (16) until the elastic force of the pulling rod (14) on the pulling block (13) and the reaction force of the medical rubber ring (10) on the pulling block (13) are offset, and in this process, the two conductive blocks (17) will both contact the medical rubber ring (10) and make it conductive; In the fourth step, under the premise that the power rod (19) moves a certain distance, if the elasticity of the medical rubber ring (10) decreases under the action of the electric current, the reaction force of the medical rubber ring (10) on the pulling block (13) will increase, so that the pulling block (13) drives the pulling rod (14) to move a greater distance in the direction close to the sliding sleeve (16); In the fifth step, after the inspection of a medical rubber ring (10) is completed, it is removed by the circulation component, and the next medical rubber ring (10) is transported to the bottom of the inspection box (5) for inspection. The periodic pulling and power-on process is repeated many times to simulate the cyclic stress of the rubber ring in actual use, and the pulling force of the medical rubber ring (10) after different power-on times is recorded, and the strength of the medical rubber ring (10) is evaluated by the periodic pulling force.

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