Device for testing mechanical strength of treatment pad

Abstract

The utility model provides a mechanical strength testing device for a treatment pad, which comprises a test bed, a rotating shaft, a folding assembly and a counting assembly, the rotating shaft is positioned on the test bed, and a first limiting assembly and a second limiting assembly are respectively arranged on two radial sides of the rotating shaft; at least one of the first limiting assembly and the second limiting assembly is connected with the folding assembly and is driven by the folding assembly to rotate around the rotating shaft; the counting assembly is located on the outer side of the rotating shaft and used for sensing and recording the folding times of the first limiting assembly and / or the second limiting assembly. According to the utility model, the mechanical strength of the treatment pad can be automatically and efficiently tested, the device is suitable for treatment pads of different models and specifications through the optimal design of the first limiting assembly, the second limiting assembly and the like, the actual bending angle and the actual bending times of the treatment pad can be effectively ensured to meet standard requirements, and the reliability of a test result is ensured.

Description

Technical Field

[0001] This utility model relates to the field of therapeutic pad performance testing technology, and in particular to a mechanical strength testing device for a therapeutic pad. Background Technology

[0002] A treatment pad is a foldable, flexible device used in equipment employing a liquid circulation medium to contain the circulating fluid, intended to provide localized cooling to the patient. According to the general requirements for basic safety and performance of medical electrical equipment and the mechanical strength requirements for equipment used for localized physical cooling, the treatment pad should be bent 180° in its normal operating direction and, after 10,000 cycles, filled with liquid without leakage. However, existing testing methods largely rely on manual operation. Currently, there is no effective and convenient equipment or instrument available on the market for performing this test on treatment pads. Manual operation is not only inefficient, but the test results are also greatly affected by human factors, making it difficult to guarantee the accuracy of the test. Utility Model Content

[0003] The purpose of this invention is to provide a mechanical strength testing device for a treatment pad, thereby addressing the shortcomings in the aforementioned background technology.

[0004] The technical solution of this utility model is: a mechanical strength testing device for a treatment pad, comprising:

[0005] Test bench;

[0006] A rotating shaft is located on the test bench, and a first limiting component and a second limiting component are respectively arranged on its radial sides;

[0007] A folding assembly, wherein at least one of the first limiting assembly and the second limiting assembly is connected to the folding assembly and is driven by the folding assembly to rotate about the rotation axis;

[0008] A counting component, located outside the rotation axis, is used to sense and record the number of folds of the first limiting component and / or the second limiting component.

[0009] Preferably, the first limiting component includes a first limiting clamp, and two sets of the first limiting clamps are distributed along the axial direction of the rotation axis. The opening and closing directions of the two sets of the first limiting clamps are opposite, and several first limiting clamps are distributed in each set along the radial direction of the rotation axis.

[0010] The second limiting component includes a second limiting clamp, which is distributed in a plurality of portions along the axial direction of the rotation axis, and the opening and closing direction of the second limiting clamp is toward the rotation axis.

[0011] Preferably, the first limiting component includes a first pressure rod located above the test bench, and the second limiting component includes a second pressure rod located above the test bench. The second pressure rod and the second limiting clamp are respectively connected to the folding component, and the first pressure rod and the second pressure rod are respectively located on both sides of the surface where the second limiting clamp is located.

[0012] Preferably, the first limiting component includes a first fixing block, a first slider, a first limiting block, and a first elastic element. The first fixing block is fixedly connected to the test bench. The first slider slides through the first fixing block, and its top and bottom ends are respectively connected to the first pressure rod and the first limiting block. The first elastic element is sleeved on the outside of the first slider, and its top and bottom ends abut against the first fixing block and the first limiting block, respectively.

[0013] Preferably, the second limiting component includes a second fixing block, a second slider, a second limiting block, and a second elastic element. The second fixing block is fixedly connected to the folding component. The second limiting block and the second pressure rod are located on opposite sides of the surface where the second limiting clamp is located. The second slider slides through the second fixing block, and its two ends are connected to the second pressure rod and the second limiting block, respectively. The second elastic element is sleeved on the outside of the second slider, and its two ends abut against the second fixing block and the second limiting block, respectively.

[0014] Preferably, the second limiting component includes a mounting plate and a locking member, and the second limiting clamp is fixedly connected to the mounting plate; the mounting plate is slidably connected to the folding component and can be close to or away from the rotation axis; the locking member is used to fix the mounting plate to the folding component.

[0015] Preferably, the folding assembly includes a servo motor, a synchronous pulley set, and a folding frame. The two ends of the folding frame are respectively connected to the mounting plate and the synchronous pulley set. The output end of the servo motor is connected to the synchronous pulley set to drive the folding frame to rotate around the rotation axis.

[0016] Preferably, the test bench is equipped with a central controller and an industrial control panel. The industrial control panel is connected to the central controller via a signal, and the central controller is used to control the operating status of the folding component.

[0017] Preferably, the counting component includes a first proximity switch and a second proximity switch that are respectively connected to the master controller signal via signals. The two switches are located on the radial sides of the rotating shaft and are used to detect the initial state and the folding state of the folding component, respectively.

[0018] Preferably, the bottom of the test bench has a number of fuma wheels evenly distributed.

[0019] The beneficial effects of this utility model are: it provides an automatic and efficient testing device for testing the mechanical strength of treatment pads, improving efficiency and reducing the workload of testing personnel; through the optimized design of the first limiting component, the second limiting component, etc., this device is applicable to treatment pads of different models and specifications, and can effectively ensure that the actual bending angle and number of bending times of the treatment pad meet the standard requirements, thus ensuring the reliability of the test results. Attached Figure Description

[0020] Figure 1 This is a usage state diagram of an embodiment of this utility model;

[0021] Figure 2 This is a structural diagram from a first perspective of an embodiment of the present utility model;

[0022] Figure 3 This is a structural diagram from a second perspective of an embodiment of the present utility model;

[0023] Figure 4 This is a cross-sectional view of the first limiting component and the second limiting component in an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram showing the connection between the mounting plate and the folding frame in an embodiment of this utility model;

[0025] In the picture:

[0026] 1. Test bench;

[0027] 2. Rotation shaft;

[0028] 3. First limiting assembly; 3.1 First limiting clamp; 3.2 First pressure rod; 3.3 First fixing block; 3.4 First slider; 3.5 First limiting block; 3.6 First elastic element;

[0029] 4. Second limiting assembly; 4.1 Second limiting clamp; 4.2 Second pressure rod; 4.3 Mounting plate; 4.4 Locking component; 4.5 Sliding sleeve; 4.51 Limiting screw hole; 4.6 Second fixing block; 4.61 Straight groove; 4.7 Second slider; 4.8 Second limiting block; 4.9 Second elastic element;

[0030] 5. Folding assembly; 5.1. Servo motor; 5.2. Synchronous pulley set; 5.3. Folding frame; 5.31. First support rod; 5.32. Second support rod; 5.4. Linkage rod;

[0031] 6. Counting component; 6.1. First proximity switch; 6.2. Second proximity switch;

[0032] 7. Central controller;

[0033] 8. Industrial control panel;

[0034] 9. Fuma Wheel;

[0035] 10. Slide groove; 10.1. First slide section; 10.2. Second slide section;

[0036] 11. Treatment pad. Detailed Implementation

[0037] The technical solutions of the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0038] In the description of the embodiments of this utility model, it should be understood that the terms "top," "bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that unless otherwise expressly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model through specific circumstances.

[0039] Reference Appendix Figure 1-5 This embodiment provides a mechanical strength testing device for a treatment pad, which includes a test platform 1 and a rotating shaft 2, a first limiting component 3, a second limiting component 4, a folding component 5, a counting component 6, a central controller 7, an industrial control panel 8, and several casters 9 mounted thereon. Several casters 9 are evenly distributed at the bottom of the test platform 1 to facilitate the movement or fixation of the testing device. The central controller 7 can be located inside or outside the test platform 1 and is used to control the operating state of the folding component 5. The industrial control panel 8 is located outside the test platform 1 and is connected to the central controller 7 and the counting component 6 via signals. The industrial control screen 8 is used for human-machine interaction, allowing test personnel to control the central controller 7 and display the operating status of the flipping component 5, the number of times the counting component 6 is counted, etc. The rotating shaft 2 is rotatably mounted on the top of the test bench 1, and the first limiting component 3 and the second limiting component 4 are respectively mounted on its radial sides. At least one of the first limiting component 3 and the second limiting component 4 is connected to the flipping component 5 and is driven by the flipping component 5 to rotate around the rotating shaft 2. The counting component 6 is located outside the rotating shaft 2 and is used to sense and record the number of flips of the first limiting component 3 and / or the second limiting component 4.

[0040] During the test, the treatment pad 11 is placed on the test table 1, with its bent portion (the same as the bent portion during normal use) corresponding to the position of the rotation axis 2, but not in direct contact with the rotation axis 2. The first limiting component 3 and the second limiting component 4 are used to limit and fix the parts of the treatment pad 11 located on both sides of the rotation axis 2, respectively. Then, the folding component 5 is used to drive the first limiting component 3 and / or the second limiting component 4 to rotate around the rotation axis 2 and move closer to each other, realizing the bending action of the treatment pad 11. The number of times is counted by the counting component 6. Then, the folding component 5 is used to drive the first limiting component 3 and / or the second limiting component 4 to rotate around the rotation axis 2 in the opposite direction and move away from each other, realizing the unfolding action of the treatment pad 11. The number of times is counted by the counting component 6. This completes one bending-unfolding test. After the master controller 7 controls the folding component 5 to complete the above bending-unfolding test cycle n times according to the preset program and parameters, the treatment pad 11 is removed and filled with liquid. It is then observed or tested for any leakage.

[0041] Using the above-mentioned device, the operation of the folding component 5 can be automatically controlled by the cooperation of the master controller 7 and the counting component 6, thereby driving the treatment pad 11 to bend and unfold a specified number of times, realizing the automated detection of its mechanical strength and reducing the labor intensity of the testers.

[0042] The first limiting component 3 and the second limiting component 4 can both be connected to the folding component 5. By optimizing the internal structure of the folding component 5 (e.g., by setting a more complex gear set to achieve bidirectional folding), or by setting two independent folding components 5 to drive the first limiting component 3 and the second limiting component 4 to rotate respectively, the two can be moved closer or further apart. Of course, only one of the first limiting component 3 and the second limiting component 4 can be connected to the folding component 5, which does not affect the bending-unfolding action of the treatment pad 11, simplifies the test device, and reduces the production and maintenance costs of the device. In this embodiment, the latter is the preferred embodiment, and the second limiting component 4 is specified to be connected to the folding component 5 for further explanation of the technical solution.

[0043] The first limiting component 3 includes a first limiting clamp 3.1 and a first pressure rod 3.2, and the second limiting component 4 includes a second limiting clamp 4.1 and a second pressure rod 4.2. The first limiting clamp 3.1 and the second limiting clamp 4.1 are used to clamp the edge of the treatment pad 11, with the purpose of fixing the treatment pad 11 at least partially within the test area to prevent the treatment pad 11 from loosening during bending and unfolding, which would cause the test to be suspended or fail. When the model and size of the treatment pad 11 being tested do not change frequently (determined by the source of the sample), the positions of the first limiting clamp 3.1 and the second limiting clamp 4.1 can be fixed. When the model or size of the treatment pad 11 being tested changes frequently (determined by the source of the sample), the assembly scheme of the first limiting clamp 3.1 and / or the second limiting clamp 4.1 needs to be optimized to meet different test requirements.

[0044] For the former, the implementation of fixing the positions of the first limiting clamp 3.1 and the second limiting clamp 4.1 is something that those skilled in the art can configure themselves based on their needs and common sense, and will not be elaborated here. For the latter, this embodiment provides some preferred implementation methods: a mounting plate 4.3 and a locking member 4.4 are constructed in the test device, and the first limiting clamp 3.1 or the second limiting clamp 4.1 is fixed on the mounting plate 4.3; the mounting plate 4.3 is slidably connected to the folding assembly 5, and can move closer to or further away from the rotating shaft 2 by sliding on the folding assembly 5; the locking member 4.4 is used to fix the mounting plate 4.3 to the folding assembly 5; in this embodiment, when the locking member 4.4 is loosened, the position of the first limiting clamp 3.1 or the second limiting clamp 4.1 can be adjusted by sliding the mounting plate 4.3. After accurate adjustment, the locking member 4.4 is locked, thereby achieving the edge fixing requirements of treatment pads 11 of different sizes.

[0045] As mentioned above, this embodiment takes the connection of the second limiting component 4 to the folding component 5 as an example to further illustrate the technical solution. Therefore, the accompanying drawings of this utility model only exemplarily show the mounting plate 4.3 for mounting the second limiting clamp 4.1. In order to simplify the structure of the device, the first limiting clamp 3.1 is fixedly set on the test bench 1, and the configuration quantity and orientation of the first limiting clamp 3.1 and the second limiting clamp 4.1 are optimized. Specifically, the first limiting clamp 3.1 is distributed in two groups along the axial direction of the rotation axis 2 (not in direct contact with the rotation axis 2, but the distribution direction is parallel to the axial direction of the rotation axis 2). The opening and closing directions of the two groups of first limiting clamps 3.1 are opposite. Each group of first limiting clamps 3.1 is distributed in one or more radially along the rotation axis 2. In this embodiment, each group is provided with two. The second limiting component 4 includes the second limiting clamp 4.1, and the second limiting clamp 4.1 is distributed in one or more radially along the rotation axis 2. (It does not directly contact the rotating shaft 2, but refers to the dispersion direction being parallel to the axis of the rotating shaft 2). In this embodiment, two limit clamps are provided, with the opening and closing direction of the second limit clamp 4.1 facing the rotating shaft 2. In this solution, the treatment pad 11 is adjustablely semi-enclosed and limited by the second limit clamp 4.1 and two sets of first limit clamps 3.1. This not only provides an open space on one side of the treatment pad 11 to accommodate the redundant size of the treatment pad 11 on that side, but also limits the other side of the treatment pad 11 with the position adjustable second limit clamp 4.1. This can well meet the limiting requirements of treatment pads 11 of different sizes, and avoid a series of test accidents (such as scratching other equipment or wiring harnesses) caused by the lateral redundant parts swinging freely when the treatment pad 11 is folded with the folding assembly 5 when the second limit clamp 4.1 is configured according to the layout direction of the first limit clamp 3.1 (i.e., the side of the second limit clamp 4.1 is also an open space).

[0046] The first pressure rod 3.2 is located between the first limiting clamp 3.1 and the rotating shaft 2 to ensure the flatness of the treatment pad 11 on this side and prevent wrinkles from affecting the actual bending angle of the measured part of the treatment pad 11. The second pressure rod 4.2 is located between the second limiting clamp 4.1 and the rotating shaft 2 and is connected to the folding assembly 5. The first pressure rod 3.2 and the second pressure rod 4.2 are located on both sides of the surface where the second limiting clamp 4.1 is located, so that when the folding assembly 5 is activated, it can simultaneously drive the second limiting clamp 4.1 and the second pressure rod 4.2 to rotate. When the folding assembly 5 drives the treatment pad 11 held by the second limiting clamp 4.1 to fold and press it onto the treatment pad 11 held by the first limiting clamp 3.1, the second pressure rod 4.2 is located above the treatment pad 11 held by the second limiting clamp 4.1 and presses against the treatment pad 11. Because the treatment pad 11 itself has a certain thickness, when it is folded 180°, the two sections of the treatment pad 11 folded into two segments cannot be parallel to each other near the actual bending line, but have a certain angle. The thicker the treatment pad 11, the greater the influence of this angle on the actual bending angle of the tested part, which makes the control of the actual bending angle parameter during the test not meet the standard requirements, resulting in unreliable test results. The second pressure bar 4.2 is set to reduce the error of the actual bending angle. When the treatment pad 11 is bent by the action of the folding component 5, the second pressure bar 4.2 can apply pressure to the two overlapping sections of the treatment pad 11 after bending, so that the angle of the treatment pad 11 near the actual bending line is smaller or close to zero, which meets the requirement of the test standard that the bending angle should be 180° and improves the reliability of the test results.

[0047] Preferably, between the first limiting clamp 3.1 and the rotating shaft 2, the first pressure rod 3.2 is closer to the rotating shaft 2, and between the second limiting clamp 4.1 and the rotating shaft 2, the second pressure rod 4.2 is closer to the rotating shaft 2. This improves the technical effect, resulting in higher flatness and overlap of the treatment pad 11 on both sides of the actual bending line, and higher reliability of the test results. In practice, the distance between the first pressure rod 3.2 and the rotating shaft 2 can be optimized according to the size (e.g., thickness) of the treatment pad 11, so that the first pressure rod 3.2 is closer to the actual bending line of the treatment pad 11. In this way, even if the part of the treatment pad 11 folded by the folding component 5 undergoes slight bending due to its own weight, the positional deviation of the actual bending line of the treatment pad 11 can be controlled within the allowable range due to the limiting effect of the first pressure rod 3.2 and the second limiting clamp 4.1. Furthermore, during the assembly of this device, the rotating shaft 2 should not come into contact with the treatment pad 11 in any state, so as to avoid affecting the actual bending angle of the tested part of the treatment pad 11. Therefore, in this embodiment, two rotating shafts 2 are set on the test bench 1. The two rotating shafts 2 are coaxially distributed, and the placement and bending test area of ​​the treatment pad 11 is located between the two rotating shafts 2, so as to achieve the avoidance of the rotating shaft 2 from the treatment pad 11.

[0048] The folding assembly 5 in this embodiment includes a servo motor 5.1, a synchronous pulley set 5.2, and a folding frame 5.3. The two ends of the folding frame 5.3 are respectively connected to the mounting plate 4.3 and the synchronous pulley set 5.2. The output end of the servo motor 5.1 is connected to the synchronous pulley set 5.2 to drive the folding frame 5.3 to rotate around the rotating shaft 2. The selection and assembly of the servo motor 5.1, synchronous pulley set 5.2, rotating shaft 2, folding frame 5.3, and mounting plate 4.3 can all be carried out by those skilled in the art according to actual needs. No further limitations are made here; only some feasible implementation methods are described in conjunction with the accompanying drawings.

[0049] Reference Appendix Figure 3 In this embodiment, the test bench 1 is configured with an internally hollow structure to accommodate some basic functional components, such as the main controller 7 mentioned above, parts of the folding assembly 5, and some basic wiring harnesses and circuit boards, making the structure of this test device more compact and the appearance more concise. There are three sets of synchronous pulley groups 5.2, each including a synchronous belt and at least two synchronous pulleys. A rotatable linkage rod 5.4 is constructed inside the test bench 1. The linkage rod 5.4 is parallel to the rotating shaft 2 and the output shaft of the servo motor 5.1. The output shaft of the servo motor 5.1 and the linkage rod 5.4 are connected through a set of synchronous pulley groups 5.2. Both ends of the linkage rod 5.4 are connected to a rotating shaft 2 through a set of synchronous pulley groups 5.2. The folding frame 5.3 is connected to the synchronous pulley groups 5.2 through the rotating shaft 2. When the main controller 7 drives the servo motor 5.1, the folding frame 5.3 rotates around the rotating shaft 2 via the synchronous pulley groups 5.2.

[0050] More specifically, the folding frame 5.3 includes two first support rods 5.31 and one second support rod 5.32. The first support rods 5.31 are perpendicular to the rotation axis 2, and the two first support rods 5.31 are parallel to each other and connected to different rotation axes 2 respectively. The second support rod 5.32 is located at the end of the first support rod 5.31 away from the rotation axis 2 and is used to connect the two first support rods 5.31. The two ends of the mounting plate 4.3 are respectively provided with sliding sleeves 4.5. The two sliding sleeves 4.5 are respectively sleeved on different first support rods 5.31, and the side wall of the sliding sleeve 4.5 is provided with a limiting screw hole 4.51. The locking member 4.4 is preferably a bolt installed in the limiting screw hole 4.51. The bolt can move radially along the sliding sleeve 4.5, thereby abutting against the first support rod 5.31 located inside the sliding sleeve 4.5 or separating from the first support rod 5.31. When the rotating bolt moves it away from and disengages it from the side wall of the first support rod 5.31, the sliding sleeve 4.5 can slide along the axial direction of the first support rod 5.31, changing the distance between the mounting plate 4.3 and the rotating shaft 2, and thus changing the distance between the second limiting clamp 4.1 on the mounting plate 4.3 and the rotating shaft 2. When the rotating bolt moves it closer to and abuts against the side wall of the first support rod 5.31, the sliding sleeve 4.5 and the first support rod 5.31 are relatively fixed, and the positions of the mounting plate 4.3 and the second limiting clamp 4.1 are fixed.

[0051] Based on the above technical solution, when the model and size of the treatment pad 11 under test, especially the thickness, do not change frequently (determined by the source of the sample), the positions of the first pressure bar 3.2 and the second pressure bar 4.2 can be fixed; when the model or size of the treatment pad 11 under test, especially the thickness, changes frequently (determined by the source of the sample), the assembly scheme of the first pressure bar 3.2 and the second pressure bar 4.2 needs to be optimized to meet different testing requirements.

[0052] In this embodiment, the following optimized design is made for the latter situation: the first limiting component 3 further includes a first fixing block 3.3, a first slider 3.4, a first limiting block 3.5 and a first elastic element 3.6. The first fixing block 3.3 is fixedly connected to the test bench 1; the first slider 3.4 slides vertically through the first fixing block 3.3, and the top and bottom ends are respectively connected to the first pressure rod 3.2 and the first limiting block 3.5; the first elastic element 3.6 is sleeved on the outside of the first slider 3.4, and the top and bottom ends abut against the first fixing block 3.3 and the first limiting block 3.5 respectively. By assembling a first slider 3.4 of suitable length and a first elastic element 3.6 of suitable type, when there is no treatment pad 11 between the first pressure rod 3.2 and the test table 1, the first elastic element 3.6 is in its natural state and its two ends abut against the first fixing block 3.3 and the first limiting block 3.5. When the treatment pad 11 needs to be placed, the first pressure rod 3.2 is lifted upward to provide space for the treatment pad 11, and at the same time, the first slider 3.4 and the first limiting block 3.5 are moved upward, and the first limiting block 3.5 compresses the first elastic element 3.6. After the treatment pad 11 is placed and the first pressure rod 3.2 is released, the first elastic element 3.6, which is in a compressed state, tends to return to its natural state, and the first fixing block 3.4... Both the first fixed block 3.3 and the first limiting block 3.5 are subjected to elastic force. However, since the first fixed block 3.3 is immovable and the first limiting block 3.5 is movable, the first limiting block 3.5 will be forced to move downward, thereby causing the first slider 3.4 and the first pressure rod 3.2 to move downward. Since there is already a treatment pad 11 between the first pressure rod 3.2 and the test table 1 at this time, the first elastic element 3.6 cannot fully return to its natural state. Therefore, not only can the first pressure rod 3.2 abut against the treatment pad 11, but the first elastic element 3.6 can also continuously provide downward force to the first limiting block 3.5, the first slider 3.4 and the first pressure rod 3.2, so that the first pressure rod 3.2 presses the treatment pad 11 tightly, ensuring the flatness of the treatment pad 11.

[0053] Similarly, the optimized design of this embodiment also includes: the second limiting component 4 is provided with a second fixing block 4.6, a second slider 4.7, a second limiting block 4.8, and a second elastic element 4.9. The second fixing block 4.6 is fixedly connected to the rotating shaft 2 and the first support rod 5.31. The second limiting block 4.8 and the second pressure rod 4.2 are respectively located on both sides of the surface where the second limiting clamp 4.1 is located, that is, the second limiting block 4.8 and the first pressure rod 3.2 are located on the same side of the surface where the second limiting clamp 4.1 is located. The second slider 4.7 slides through the second fixing block 4.6, and its two ends are respectively connected to the second pressure rod 4.2 and the second limiting block 4.8. The sliding direction of the second slider 4.7 is perpendicular to the rotating shaft 2 and the first support rod 5.31. The second elastic element 4.9 is sleeved on the outside of the second slider 4.7, and its two ends abut against the second fixing block 4.6 and the second limiting block 4.8, respectively. By assembling a second slider 4.7 of suitable length and a second elastic element 4.9 of suitable type, when the testing device is not equipped with the treatment pad 11 and the folding assembly 5 drives the second limiting clamp 4.1 to rotate around the rotation axis 2 to the position where the treatment pad 11 is bent 180°, the second elastic element 4.9 is in its natural state and its two ends abut against the second fixing block 4.6 and the second limiting block 4.8, thus meeting the following test requirements: When the treatment pad 11 is placed on the testing device and the treatment pad 11 is bent 180°, since the treatment pad 11 is below the second pressure rod 4.2 and the treatment pad 11 has a certain thickness, the treatment pad 11 lifts the second pressure rod 4.2, and the second slider 4.7 and the second limiting block 4.8 slide upward with the second pressure rod 4.2, and the second limiting block 4.8 compresses the second elastic element 4.9. Element 4.9, while in a compressed state, has a tendency to return to its natural state. The second fixed block 4.6 and the second limiting block 4.8 will both be subjected to elastic force. However, since the second fixed block 4.6 is immovable and the second limiting block 4.8 is movable, the second limiting block 4.8 will be forced downward, thereby causing the second slider 4.7 and the second pressure rod 4.2 to move downward. Since the treatment pad 11 has a certain thickness, the second elastic element 4.9 cannot completely return to its natural state. Therefore, not only can the second pressure rod 4.2 abut against the treatment pad 11, but the second elastic element 4.9 can also continuously provide downward force to the second limiting block 4.8, the second slider 4.7, and the second pressure rod 4.2, so that the second pressure rod 4.2 presses the treatment pad 11 tightly, ensuring the compliance of the actual bending angle.

[0054] Considering that the second pressure rod 4.2 rotates with the folding assembly 5, to improve its stability, a straight groove 4.61 can be constructed on the side of the second fixed block 4.6. The length direction of the straight groove 4.61 is the same as the sliding direction of the second slider 4.7. The end of the second pressure rod 4.2 passes through the straight groove 4.61 and connects to the second slider 4.7. The straight groove 4.61 can not only provide the second pressure rod 4.2 with room to move, but also more stably restrict the second pressure rod 4.2 to the second fixed block 4.6, thereby improving the structural stability of the test device during the test process.

[0055] With the above configuration, utilizing the movable and pre-tightened first pressure rod 3.2 and second pressure rod 4.2, this testing device can be adapted to the testing of treatment pads 11 of various thicknesses. The first elastic element 3.6 and second elastic element 4.9 can be equipped with springs of suitable specifications. Appropriate grooves 10 should be adaptively provided inside the first fixing block 3.3 and the second fixing block 4.6, respectively, for the sliding of the first slider 3.4 and the second slider 4.7. The slide groove 10 can be configured with a uniform inner diameter that is smaller than the diameter of the first limiting block 3.5, and the first elastic element 3.6 is located outside the slide groove 10; the slide groove 10 can also be a variable diameter type, for example: the slide groove 10 has a first groove segment 10.1 and a second groove segment 10.2 coaxially arranged, the diameter of the first slider 3.4 is less than the inner diameter of the first groove segment 10.1 and less than the diameter of the first limiting block 3.5, the diameter of the first limiting block 3.5 is less than the inner diameter of the second groove segment 10.2, and the first elastic element 3.6 is located inside the second groove segment 10.2, and the inner wall of the slide groove 10 shields and protects the first elastic element 3.6.

[0056] Reference Appendix Figure 3In this embodiment, the counting component 6 includes a first proximity switch 6.1 and a second proximity switch 6.2, which are respectively connected to the signals of the master controller 7 via signals. The two switches are located on opposite radial sides of the rotation axis 2 and are used to detect the initial state and the folded state of the folding component 5, respectively. The initial state refers to the position and state of the folding component 5 when the treatment pad 11 is placed on the test table 1 and is completely flat; the folded state refers to the position and state of the folding component 5 when the treatment pad 11 is placed on the test table 1 and is folded 180°. The position of the folding component 5 is sensed by the first proximity switch 6.1 and the second proximity switch 6.2, and the signal is transmitted to the central controller 7 and displayed on the industrial control screen 8. The tester can obtain the number of times the treatment pad 11 is bent and unfolded in real time until the number of times required by the test standard is met. Then the bending can be stopped, and the treatment pad 11 can be removed for water filling verification. Of course, the specified number of actions and control program can also be pre-entered through the industrial control screen 8 and the central controller 7 to automatically control the start and stop of the servo motor 5.1. The tester does not need to pay attention to the number of times completed. He only needs to wait until the servo motor 5.1 stops automatically because the number of actions set by the program meets the requirements before he can perform the water filling verification of the treatment pad 11, which further reduces the workload of the tester.

[0057] The beneficial effects of this utility model are as follows: it provides an automatic and efficient testing device for testing the mechanical strength of the treatment pad 11, which improves efficiency and reduces the workload of the testers; through the optimized design of the first limiting component 3, the second limiting component 4, etc., this device is applicable to treatment pads 11 of different models and specifications, and can effectively ensure that the actual bending angle and bending number of the treatment pad 11 meet the standard requirements, thus ensuring the reliability of the test results.

[0058] The above are preferred embodiments of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A mechanical strength testing device for a treatment pad, characterized in that, include: Test bench; A rotating shaft is located on the test bench, and a first limiting component and a second limiting component are respectively arranged on its radial sides; A folding assembly, wherein at least one of the first limiting assembly and the second limiting assembly is connected to the folding assembly and is driven by the folding assembly to rotate about the rotation axis; A counting component, located outside the rotation axis, is used to sense and record the number of folds of the first limiting component and / or the second limiting component.

2. The mechanical strength testing device for the treatment pad according to claim 1, characterized in that, The first limiting component includes a first limiting clamp, which is distributed in two groups along the axial direction of the rotation axis. The opening and closing directions of the two groups of first limiting clamps are opposite, and each group of first limiting clamps is distributed in several radially along the rotation axis. The second limiting component includes a second limiting clamp, which is distributed in a plurality of portions along the axial direction of the rotation axis, and the opening and closing direction of the second limiting clamp is toward the rotation axis.

3. The mechanical strength testing device for the treatment pad according to claim 2, characterized in that, The first limiting component includes a first pressure bar located above the test bench, and the second limiting component includes a second pressure bar located above the test bench. The second pressure bar and the second limiting clamp are respectively connected to the folding component, and the first pressure bar and the second pressure bar are respectively located on both sides of the surface where the second limiting clamp is located.

4. The mechanical strength testing device for the treatment pad according to claim 3, characterized in that, The first limiting component includes a first fixing block, a first slider, a first limiting block, and a first elastic element. The first fixing block is fixedly connected to the test bench. The first slider slides through the first fixing block, and its top and bottom ends are respectively connected to the first pressure rod and the first limiting block. The first elastic element is sleeved on the outside of the first slider, and its top and bottom ends abut against the first fixing block and the first limiting block, respectively.

5. The mechanical strength testing device for the treatment pad according to claim 3, characterized in that, The second limiting component includes a second fixing block, a second slider, a second limiting block, and a second elastic element. The second fixing block is fixedly connected to the folding component. The second limiting block and the second pressure rod are located on both sides of the surface where the second limiting clamp is located. The second slider slides through the second fixing block, and its two ends are connected to the second pressure rod and the second limiting block, respectively. The second elastic element is sleeved on the outside of the second slider, and its two ends abut against the second fixing block and the second limiting block, respectively.

6. The mechanical strength testing device for the treatment pad according to any one of claims 2-5, characterized in that, The second limiting component includes a mounting plate and a locking member. The second limiting clamp is fixedly connected to the mounting plate. The mounting plate is slidably connected to the folding component and can be close to or away from the rotating shaft. The locking member is used to fix the mounting plate to the folding component.

7. The mechanical strength testing device for the treatment pad according to claim 6, characterized in that, The folding assembly includes a servo motor, a synchronous pulley set, and a folding frame. The two ends of the folding frame are respectively connected to the mounting plate and the synchronous pulley set. The output end of the servo motor is connected to the synchronous pulley set to drive the folding frame to rotate around the rotation axis.

8. The mechanical strength testing device for the treatment pad according to any one of claims 1-5, 7, characterized in that, The test bench is equipped with a central controller and an industrial control panel. The industrial control panel is connected to the central controller via signals. The central controller is used to control the operating status of the folding component.

9. The mechanical strength testing device for the treatment pad according to claim 8, characterized in that, The counting component includes a first proximity switch and a second proximity switch, which are respectively connected to the master controller signal via signals. The two switches are located on the radial sides of the rotating shaft and are used to detect the initial state and the folding state of the folding component, respectively.

10. The mechanical strength testing device for the treatment pad according to any one of claims 1-5, 7, and 9, characterized in that, The bottom of the test bench has several casters evenly distributed.

Images