Curl testing device

Abstract

The invention provides a curling test device, and relates to the technical field of flexible sheet test equipment, the curling test device comprises a winding mechanism, a moving mechanism and a transmission mechanism, the winding mechanism comprises a winding shaft capable of rotating around the axis of the winding shaft and a first positioning structure, and the first positioning structure is used for positioning one end of a flexible test sample on the winding shaft; the moving mechanism comprises a moving seat capable of moving along a set direction and a second positioning structure, and the second positioning structure is used for positioning the other end of the flexible test sample on the moving seat; the transmission mechanism is respectively connected with the winding shaft and the moving seat, the transmission mechanism is configured to respond to external driving force to drive the winding shaft and the moving seat to synchronously act, and the moving distance of the moving seat is equal to the curling length or the stretching length of the flexible test sample which is curled or stretched relative to the winding shaft due to the rotation of the winding shaft. According to the invention, the problem of excessive tensioning or tilting of the flexible test sample in the test process can be avoided.

Description

Technical Field

[0001] This invention relates to the field of flexible sheet testing equipment, and in particular to a curling testing device. Background Technology

[0002] Structural components in some products frequently curl during application, such as flexible electronic products like flexible conductive films, flexible sensors, and flexible optoelectronic devices, which are increasingly widely used. The curl life and curl reliability of these flexible electronic products are key performance indicators for evaluating their quality. Therefore, curl testing devices are generally used to perform curl tests on these flexible electronic products. These devices typically include a winding shaft and a counterweight structure. The two ends of the flexible test sample are positioned on the winding shaft and the counterweight structure, respectively. A power source drives the winding shaft to rotate forward and backward, causing the flexible test sample to curl and extend relative to the shaft. In general testing, the required curl test data can be obtained by setting the tension of the flexible test sample and the number of rotations and rotation speed of the winding shaft.

[0003] However, due to the presence of a counterweight structure, additional stress is generated on the flexible test sample during the testing process. This can easily lead to excessive tension in the flexible test sample during the rolling process or partial warping during the stretching process, affecting the accuracy of the rolling test. Summary of the Invention

[0004] Therefore, it is necessary to provide a curling test device to address the problem that existing curling test devices easily cause flexible test samples to be over-tensioned or warped during the testing process.

[0005] A curling test device includes a winding mechanism, a moving mechanism and a transmission mechanism. The winding mechanism includes a winding shaft that can rotate about its own axis and a first positioning structure disposed on the winding shaft. The first positioning structure is used to position one end of the flexible test sample on the winding shaft.

[0006] The moving mechanism includes a movable seat that can move along a set direction and a second positioning structure disposed on the movable seat. The second positioning structure is used to position the other end of the flexible test sample on the movable seat. The set direction is perpendicular to the axis of the winding shaft.

[0007] The transmission mechanism is connected to the winding shaft and the moving seat respectively. The transmission mechanism is configured to drive the winding shaft and the moving seat to move synchronously in response to an external driving force, and to keep the moving distance of the moving seat equal to the curling length or stretching length of the flexible test sample that is curled or stretched relative to the winding shaft due to the rotation of the winding shaft.

[0008] In one embodiment, the transmission mechanism includes a meshing gear and a rack. The outer diameter of the gear is equal to the outer diameter of the winding shaft. The gear is coaxially arranged with the winding shaft and keyed. The length direction of the rack is in the same direction as a predetermined direction and is fixedly connected to a movable seat. The gear and rack mesh and transmit power. When either is driven by an external driving force, the gear and rack can move synchronously, and the rotational length of any point on the circumferential surface of the gear along the circumferential direction is equal to the movement length of any point on the rack along the predetermined direction. Thus, by driving the winding shaft to rotate via the gear and the movable seat to move via the rack, the movement distance of the movable seat can be kept equal to the curling or stretching length of the flexible test sample relative to the winding shaft due to its rotation.

[0009] In one embodiment, the curling test device further includes a frame, which includes a support column and a slide rail. The winding shaft is rotatably mounted on the support column, and the movable seat is slidably engaged with the slide rail. By providing a frame, the winding shaft and the movable seat can be conveniently arranged, and the sliding direction of the movable seat can be limited by the slide rail, thereby improving the stability of the movable seat moving in the set direction.

[0010] In one embodiment, the support column has multiple rotating holes along its height direction, and the end of the winding shaft is provided with a rotating shaft adapted to the rotating holes. The winding shaft can be selectively inserted into one of the rotating holes and rotatably mounted on the support column via the rotating shaft. Different flexible test samples may have different thickness and test length dimensions. By providing multiple rotating holes distributed along the height direction on the support column, winding shafts of different diameters can be replaced for different test requirements. The winding shaft can then be positioned at the corresponding height position to facilitate the meshing of a matching gear of the appropriate size with a rack.

[0011] In one embodiment, the transmission mechanism further includes a first connecting arm and a second connecting arm, both of which are slidably mounted on the slide rail. The movable seat is disposed on the first connecting arm and slidably engages with the slide rail via the first connecting arm. The two ends of the rack are fixedly mounted to the first and second connecting arms, respectively. The first and second connecting arms enhance the stability of the assembly between the rack and the movable seat.

[0012] In one embodiment, a lifting adjustment structure is provided between the movable seat and the first connecting arm. The movable seat can be selectively positioned at a desired height relative to the first connecting arm via the lifting adjustment structure. By providing a lifting adjustment structure, the height of the movable seat can be easily adjusted. After one end of the flexible test sample is fixed to the winding shaft, the entire flexible test sample can be kept horizontal by adjusting the height of the movable seat, which is convenient for curling tests.

[0013] In one embodiment, the first positioning structure includes a first fixing block and a first clamping member. The first fixing block is fixed to the winding shaft, and the first clamping member includes a first arc-shaped pressure plate and a first connecting portion formed on the first arc-shaped pressure plate. The first arc-shaped pressure plate covers the winding shaft and both have the same curvature. The first connecting portion is connected to the first fixing block by screws so that the first arc-shaped pressure plate can clamp and position one end of a flexible test sample of different thicknesses onto the winding shaft. By clamping and positioning the flexible test sample onto the winding shaft with the arc-shaped pressure plate, sufficient contact area is ensured at the pressing part. This reduces the pressure on the end of the flexible test sample while meeting the required clamping force, avoiding stress concentration in the flexible test sample. Simultaneously, the first connecting portion is connected to the first fixing block by screws, allowing the first arc-shaped pressure plate to adapt to flexible test samples of different thicknesses.

[0014] In one embodiment, the first arc-shaped pressure plate also has limiting portions at both ends along the axial direction of the winding shaft. These limiting portions are used to limit one end of the flexible test sample along the axial direction of the winding shaft. Providing limiting portions facilitates the alignment, installation, and positioning of the flexible test sample.

[0015] In one embodiment, the second positioning structure includes a pressure block, the movable seat having a support surface, and the pressure block being connected to the support surface by screws so that the pressure block can press and position the other end of a flexible test sample of different thicknesses onto the support surface. The pressure block being connected to the support surface by screws allows it to adapt to flexible test samples of different thicknesses and dimensions.

[0016] In one embodiment, the curling test apparatus further includes a power source and a control unit for controlling the start and stop of the power source. The power source is connected to a transmission mechanism and is used to apply the external driving force to the transmission mechanism. Test parameters can be preset through the control unit to facilitate automated curling testing.

[0017] In one embodiment, the transmission mechanism further includes a compensation component comprising a drive wheel, a driven wheel, a transmission belt, a connecting block, and a counterweight. The two ends of the transmission belt are fixedly connected to the drive wheel and the counterweight, respectively, and the transmission belt is tensioned between the drive wheel and the driven wheel via the counterweight. The connecting block is fixedly connected to the transmission belt and to a moving seat or rack. The thickness of the transmission belt is equal to the thickness of the flexible test sample, and the outer diameter of the drive wheel is equal to the outer diameter of the winding shaft. The drive wheel is configured to rotate around its own axis in response to an external driving force, and the rotational action causes the transmission belt to curl or extend relative to the drive wheel. This solution is suitable for situations requiring multiple turns of winding of the flexible test sample. By using the drive wheel to wind the transmission belt, it simulates the winding of the flexible test sample by the winding shaft, ensuring that even when the flexible test sample is wound multiple times, the moving distance of the moving seat remains equal to the curling or extension length of the flexible test sample relative to the winding shaft due to its rotation.

[0018] In one embodiment, the first positioning structure includes a first fixing block and a first clamping member. The first fixing block is fixed to the winding shaft. The first clamping member includes a first arc-shaped pressure plate and a first connecting portion formed on the first arc-shaped pressure plate. The first arc-shaped pressure plate covers the winding shaft and both have the same curvature. The first connecting portion is connected to the first fixing block by screws so that the first arc-shaped pressure plate can clamp and position one end of a flexible test sample of different thicknesses on the winding shaft. The compensation component also includes a second clamping member. The drive wheel has a connecting protrusion. The second clamping member includes a second arc-shaped pressure plate and a second connecting portion formed on the second arc-shaped pressure plate. The second arc-shaped pressure plate covers the drive wheel and both have the same curvature. The thickness of the second arc-shaped pressure plate is equal to the thickness of the first arc-shaped pressure plate. The second connecting portion is connected to the connecting protrusion by screws so that the second arc-shaped pressure plate can clamp and position one end of a transmission belt of different thicknesses on the drive wheel. When the flexible test sample is wound in multiple turns, the first arc-shaped pressure plate will increase the outer diameter of the winding shaft locally, which will have a certain impact on the test data. This solution can eliminate the above-mentioned impact caused by the first arc-shaped pressure plate.

[0019] When performing a curling test on a flexible test sample using the curling test device provided in this application, both ends of the flexible test sample are positioned on the winding shaft and the moving seat, respectively. Since the winding shaft and the moving seat can be driven synchronously by the transmission mechanism, and the moving distance of the moving seat during the test remains equal to the curling or stretching length of the flexible test sample relative to the winding shaft due to its rotation, it can be ensured that the tension force on the flexible test sample is a preset value and remains constant. This avoids the problem of excessive tension or warping of the flexible test sample during the test, improving the accuracy of the test data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a curling test device provided in Embodiment 1 of this application;

[0021] Figure 2 This is a schematic diagram of the assembly of the transmission mechanism and the winding shaft in Example 1;

[0022] Figure 3 This is a schematic diagram of the first positioning structure in Embodiment 1;

[0023] Figure 4 This is a schematic diagram of the second positioning structure and the first connecting arm in Embodiment 1;

[0024] Figure 5 This is a schematic diagram of the structure of a curling test device provided in Embodiment 2 of this application;

[0025] Figure 6 This is a schematic diagram of the curling test device provided in Embodiment 2 from another perspective;

[0026] Figure 7 This is a schematic diagram of the transmission mechanism in Example 2;

[0027] Figure 8 This is a schematic diagram of the assembly of the drive wheel, the second fixing block, and the second clamping member in one optional embodiment.

[0028] Reference numerals: 1. Winding shaft; 2. First positioning structure; 20. First fixing block; 21. First arc-shaped pressure plate; 210. First connecting part; 211. Limiting part; 212. Insertion part; 3. Moving seat; 30. Support surface; 31. Elongated hole; 4. Second positioning structure; 40. Pressure block; 5. Transmission mechanism; 50. Gear; 51. Rack; 52. First connecting arm; 520. Connecting hole; 53. Second connecting arm; 54. Drive wheel; 540. Connecting protrusion; 55. Driven wheel; 56. Transmission belt; 57. Connecting block; 58. Counterweight block; 59. Second arc-shaped pressure plate; 590. Second connecting part; 6. Frame; 60. Support column; 600. Rotary hole; 61. Slide rail; 7. Control unit; 8. Drive shaft. Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0035] Example 1: This example provides a curling test device, such as... Figure 1 The described curling test device comprises a winding mechanism, a moving mechanism, and a transmission mechanism 5. The winding mechanism includes a winding shaft 1 capable of rotating around its own axis and a first positioning structure 2 disposed on the winding shaft 1, which positions one end of the flexible test sample onto the winding shaft 1. The moving mechanism includes a moving seat 3 capable of moving along a predetermined direction and a second positioning structure 4 disposed on the moving seat 3, which positions the other end of the flexible test sample onto the moving seat 3, with the predetermined direction perpendicular to the axial direction of the winding shaft 1. The transmission mechanism 5 is connected to both the winding shaft 1 and the moving seat 3. The transmission mechanism 5 is configured to respond to an external driving force to drive the winding shaft 1 and the moving seat 3 synchronously, ensuring that the moving distance of the moving seat 3 is equal to the curling or stretching length of the flexible test sample relative to the winding shaft 1 due to its rotation.

[0036] When performing a curling test on a flexible test sample using the curling test device provided in this embodiment, both ends of the flexible test sample are positioned on the winding shaft 1 and the moving seat 3, respectively. The winding shaft 1 and the moving seat 3 can be driven to move synchronously through the transmission mechanism 5. Specifically, the winding shaft 1 can be rotated around its own axis through the transmission mechanism 5, and at the same time, the moving seat 3 can be moved along a set direction through the transmission mechanism 5. During the test, the moving distance of the moving seat 3 is equal to the curling length or extension length of the flexible test sample that is curled or extended relative to the winding shaft 1 due to the rotation of the winding shaft 1. This ensures that the tension force on the flexible test sample is a preset value and remains unchanged. This avoids the problem of excessive tension or warping of the flexible test sample during the test and improves the accuracy of the test data.

[0037] The setting direction described in this embodiment is as follows: Figure 1 As shown, the set direction is perpendicular to the axis of the winding shaft 1. The set direction includes direction P1, which brings the moving seat 3 closer to the winding shaft 1, and direction P2, which moves the moving seat 3 away from the winding shaft 1. The process of the moving seat 3 moving along direction P1 can be defined as a curling process. During the curling process, the flexible test sample is curled relative to the winding shaft 1 due to the rotation of the winding shaft 1 (defined as forward rotation). That is, during the curling process, the moving seat 3 moves along direction P1, and the winding shaft 1 rotates synchronously in the forward direction. The length of the flexible test sample that is curled outside the winding shaft 1 due to the rotation of the winding shaft 1 during the curling process is the curling length. Correspondingly, the process of the moving seat 3 moving along direction P2 can be defined as an stretching process. During the stretching process, the flexible test sample is stretched relative to the winding shaft 1 due to the rotation of the winding shaft 1 (defined as reverse rotation). That is, during the stretching process, the moving seat 3 moves along direction P2, and the winding shaft 1 rotates synchronously in the reverse direction. The length of the flexible test sample that is stretched relative to the winding shaft 1 due to the rotation of the winding shaft 1 during the stretching process is the stretching length.

[0038] Therefore, in this embodiment, the statement that "the moving distance of the moving seat 3 is equal to the curling length or stretching length of the flexible test sample that is curled or stretched relative to the winding shaft 1 due to the rotation of the winding shaft 1" means that during the curling process, the moving distance of the moving seat 3 along the P1 direction is equal to the curling length of the flexible test sample; during the stretching process, the moving distance of the moving seat 3 along the P2 direction is equal to the stretching length of the flexible test sample. It is easy to understand that since the moving distance of the moving seat 3 is equal to the corresponding curling or stretching length, and the moving seat 3 moves synchronously with the winding shaft 1, there is no speed difference between the two ends of the flexible test sample. The curling test process is carried out at a uniform speed, and no additional stress is generated in the flexible test sample during the curling or stretching process.

[0039] It should be noted that the flexible test sample described in this embodiment can be any thin sheet or thick plate-shaped device that is flexible and rollable. It can be a semi-finished product or a finished product, an intermediate material or an end product, and its material and specific size are not limited.

[0040] Combination Figure 2 As shown, the transmission mechanism 5 in this embodiment includes a meshing gear 50 and a rack 51. The outer diameter of the gear 50 is equal to the outer diameter of the winding shaft 1. The gear 50 is coaxially arranged with the winding shaft 1 and keyed. The length direction of the rack 51 is in the same direction as the set direction and is fixedly connected to the moving seat 3. By setting the meshing transmission gear 50 and rack 51, when one of them is driven by an external driving force, the gear 50 and rack 51 can move synchronously, and the rotation length of any point on the circumferential surface of the gear 50 along the circumferential direction is equal to the movement length of any point on the rack 51 along the set direction. Thus, by driving the winding shaft 1 to rotate through the gear 50 and driving the moving seat 3 to move through the rack 51, the movement distance of the moving seat 3 can be kept equal to the curling length or extension length of the flexible test sample that is curled or extended relative to the winding shaft 1 due to the rotation of the winding shaft 1.

[0041] The curling test device provided in this embodiment also includes a control unit 7 and a power source (not shown in the figure). The control unit 7 is electrically connected to the power source and is used to control the start and stop of the power source. The power source is connected to the transmission mechanism 5 and is used to apply the aforementioned external driving force to the transmission mechanism 5. Test parameters can be preset through the control unit 7 to facilitate automated curling testing. In other optional embodiments, the control unit 7 and the power source may not be provided; instead, a drive device can be added to the curling test device. Figure 1 As shown, the power source in this embodiment has an output shaft, which is connected to a rack 51. The output shaft drives the rack 51 to move in a set direction. In other optional embodiments, the output shaft of the power source can also be connected to a gear 50, which drives the gear 50 to rotate around its own axis.

[0042] To facilitate the arrangement of the winding shaft 1 and the movable seat 3, the curling test device provided in this embodiment also includes a frame 6. The frame 6 includes a support column 60 and a slide rail 61. The winding shaft 1 is rotatably mounted on the support column 60, and the movable seat 3 is slidably engaged with the slide rail 61. The slide rail 61 can also limit the sliding direction of the movable seat 3, improving the stability of the movable seat 3 moving in the set direction. Optionally, the frame 6 also includes a base, and the slide rail 61 can be fixedly installed on the base by other support structures. The support column 60 is also installed on the base. Alternatively, the entire curling test device can be installed on the factory floor, that is, the support column 60 and the slide rail 61 can be directly installed on the factory floor.

[0043] Furthermore, in this embodiment, the support column 60 is provided with multiple rotating holes 600 along the height direction, and the end of the winding shaft 1 is provided with a rotating shaft adapted to the rotating holes 600. The winding shaft 1 can be selectively inserted into a rotating hole 600 and rotatably mounted on the support column 60 via the rotating shaft. In this embodiment, rotating shafts are provided on both sides of the winding shaft 1, and support columns 60 are provided on both sides of the winding shaft 1. The rotating shafts on both sides are respectively inserted into the rotating holes 600 on the corresponding side of the winding shaft 1. As mentioned above, the winding shaft 1 is keyed to the gear 50. Specifically, the end of the rotating shaft provided on one side of the winding shaft 1 forms a spline, which passes through the rotating hole 600 on the corresponding side of the support column 60 and is inserted into the spline groove provided on the gear 50.

[0044] It should be noted that the test length of different flexible test samples may vary. If the test length of the flexible test sample is long and the diameter of the winding shaft 1 is small, the winding shaft 1 needs to rotate multiple times to complete the test. As the flexible test sample is continuously wound around the winding shaft 1, the overall diameter of the winding shaft 1 and the flexible test sample wound around the winding shaft 1 gradually increases. This leads to the following problems: when the flexible test sample has already been wound around the winding shaft 1 once, the subsequent winding length of the flexible test sample wound around the winding shaft 1 will be greater than the movement distance of the moving seat 3 along the P1 direction within the corresponding time period, which will increase the internal stress of the flexible test sample (i.e., over-tension). The greater the thickness of the flexible test sample, the more significant the increase in internal stress will be. Conversely, during the stretching process, if the flexible test sample is still wound around the winding shaft 1 once, the stretching length of the flexible test sample will be greater than the movement distance of the moving seat 3 along the P2 direction within the corresponding time period, which may cause the flexible test sample to locally warp during the stretching process.

[0045] Therefore, in practical applications, the curling test device provided in this embodiment should select a winding shaft 1 of suitable size, such that the outer circumferential length of the winding shaft 1 is greater than the required test length of the flexible test sample, so that the winding shaft 1 can drive the flexible test sample to curl and extend within one revolution in both directions. Therefore, in this embodiment, the winding shaft 1 is designed to be easily detachable from the support column 60, and multiple rotating holes 600 distributed along the height direction are provided on the support column 60. After selecting a winding shaft 1 of suitable size, a gear 50 with the same outer diameter as the winding shaft 1 is selected accordingly, and a rotating hole 600 of appropriate height is selected according to the height position of the rack 51 to install the winding shaft 1 and the gear 50.

[0046] The transmission mechanism 5 in this embodiment further includes a first connecting arm 52 and a second connecting arm 53. Both the first connecting arm 52 and the second connecting arm 53 are slidably mounted on the slide rail 61. The movable seat 3 is disposed on the first connecting arm 52 and slides in cooperation with the slide rail 61 through the first connecting arm 52. The two ends of the rack 51 are fixedly mounted to the first connecting arm 52 and the second connecting arm 53, respectively. By setting the first connecting arm 52 and the second connecting arm 53, the stability of the assembly between the rack 51 and the movable seat 3 can be enhanced.

[0047] Combination Figure 3 As shown in the diagram, the first positioning structure 2 in this embodiment includes a first fixing block 20 and a first clamping member. The first fixing block 20 is fixed to the winding shaft 1. The first clamping member includes a first arc-shaped pressure plate 21 and a first connecting portion 210 formed on the first arc-shaped pressure plate 21. The first arc-shaped pressure plate 21 covers the winding shaft 1 and both have the same curvature. The first connecting portion 210 is connected to the first fixing block 20 by screws so that the first arc-shaped pressure plate 21 can clamp and position one end of a flexible test sample of different thicknesses on the winding shaft 1. By clamping and positioning the flexible test sample on the winding shaft 1 with the arc-shaped pressure plate, sufficient contact area can be ensured at the pressing part. In this way, while meeting the required clamping force, the pressure on the end of the flexible test sample can be reduced, avoiding stress concentration in the flexible test sample. At the same time, the first connecting portion 210 is connected to the first fixing block 20 by screws, so that the first arc-shaped pressure plate 21 can adapt to flexible test samples of different thicknesses.

[0048] In addition, the first arc-shaped pressure plate 21 in this embodiment also has a plate-shaped insertion part 212. Correspondingly, a slot is also provided on the winding shaft 1. During assembly, the first arc-shaped pressure plate 21 can be inserted into the slot through the insertion part 212, which can realize the initial positioning of the first arc-shaped pressure plate 21 relative to the winding shaft 1, so that the first arc-shaped pressure plate 21 can maintain a certain stability relative to the winding shaft 1.

[0049] Furthermore, in this embodiment, the first arc-shaped pressure plate 21 also has limiting portions 211 formed at both ends along the axial direction of the winding shaft 1. The limiting portions 211 are used to limit one end of the flexible test sample along the axial direction of the winding shaft 1. The limiting portions 211 facilitate the alignment, installation, and limiting of the flexible test sample.

[0050] As mentioned earlier, before conducting the winding test, the winding shaft 1 and gear 50 can be selected and matched according to the test length requirements. Correspondingly, the first positioning structure 2 adapted to the winding shaft 1 also needs to be selected and matched. The disassembly and replacement process of the winding mechanism and gear 50 is described as follows: In this embodiment, the support column 60 is detachably connected to the installation station, which is the aforementioned factory floor or the base included in the frame 6, etc., which will not be described in detail here. When replacing the winding mechanism, first remove the support column 60, then remove the winding mechanism, and then remove the gear 50. Then, align the rotating shaft of the selected and appropriately sized winding shaft 1 with the rotating hole 600 of the appropriate height and insert it. Then, mesh and assemble the selected and appropriately sized gear 50 with the rack 51, and then assemble the winding shaft 1 with the appropriate size. Finally, assemble the selected and appropriately sized first positioning structure 2 with the winding shaft 1. It should be noted that when the size change of the replaced winding shaft 1 is within a certain range, it is not necessary to replace the rack 51. However, when the size change of the replaced winding shaft 1 is large, if it causes the matching gear 50 to be unable to mesh properly with the rack 51, then the rack 51 needs to be replaced at the same time.

[0051] Combination Figure 4 As shown, the second positioning structure 4 in this embodiment includes a pressure block 40, and the movable seat 3 has a support surface 30. The pressure block 40 is connected to the support surface 30 by screws so that the pressure block 40 can press and position the other end of a flexible test sample of different thicknesses on the support surface 30. The pressure block 40 is connected to the support surface 30 by screws so that the pressure block 40 can adapt to flexible test samples of different thicknesses and sizes.

[0052] In addition, a lifting adjustment structure is provided between the movable seat 3 and the first connecting arm 52 in this embodiment. The movable seat 3 can be selectively positioned at the desired height relative to the first connecting arm 52 through the lifting adjustment structure. The lifting adjustment structure facilitates height adjustment of the movable seat 3. After one end of the flexible test sample is fixed to the winding shaft 1, the entire flexible test sample can be kept horizontal through the lifting adjustment of the movable seat 3, facilitating the curling test. Specifically, the lifting adjustment structure in this embodiment includes a bolt (not shown in the figure), a connecting hole 520 on the first connecting arm 52, and an elongated hole 31 on the movable seat 3. The elongated hole 31 extends along the height direction. The bolt passes through the connecting hole 520 and the elongated hole 31 to lock the movable seat 3 onto the first connecting arm 52. When it is necessary to adjust the height position of the movable seat 3, the bolt can be loosened to adjust the position of the movable seat 3. After the movable seat 3 reaches the desired height position, the bolt can be tightened again.

[0053] Before the curling test, a rigid plate of the same thickness as the flexible test sample can be selected. One end of the rigid plate is positioned on the winding shaft 1 using the first positioning structure 2, and the other end is positioned on the movable seat 3 using the second positioning structure 4. A universal level is then installed on the rigid plate. By observing the universal level, the levelness of the rigid plate can be determined, and the height of the movable seat 3 can be adjusted to ensure the rigid plate is level. These steps ensure that the flexible test sample remains level during subsequent installation.

[0054] The operation process of performing a curling test on a flexible test sample using the curling test device provided in this embodiment is described below:

[0055] First, before testing, check whether the winding mechanism and gear 50 are compatible with the testing requirements of the flexible test sample. After confirming compatibility, install the flexible test sample. Position one end of the flexible test sample on the winding shaft 1 through the first positioning structure 2, and then position the other end of the flexible test sample on the moving seat 3 through the second positioning structure 4, so that the flexible test sample has a predetermined tension.

[0056] Secondly, the curling test parameters are set through the control unit 7. Specifically, parameters such as the moving speed of the drive shaft 8, the moving distance of the drive shaft 8, the number of cycles, and the dwell time can be set. When setting the moving distance of the drive shaft 8, it is necessary to ensure that the moving distance is not too large so that the flexible test sample can complete the test within one turn of winding.

[0057] Finally, the test is started and test data is acquired via control unit 7.

[0058] Example 2: This example also provides a curling test device. The difference between this example and Example 1 is that the transmission mechanism 5 in the curling test device provided in this example is different. Specifically, in conjunction with... Figure 5 , Figure 6 and Figure 7 As shown in the diagram, the transmission mechanism 5 in this embodiment further includes a compensation component, which comprises a drive wheel 54, a driven wheel 55, a transmission belt 56, a connecting block 57, and a counterweight 58. The two ends of the transmission belt 56 are fixedly connected to the drive wheel 54 and the counterweight 58, respectively, and the transmission belt 56 is tensioned between the drive wheel 54 and the driven wheel 55 via the counterweight 58. The connecting block 57 is fixedly connected to the transmission belt 56 and is also fixedly connected to the movable seat 3 or the rack 51. The thickness of the transmission belt 56 is equal to the thickness of the flexible test sample, and the outer diameter of the drive wheel 54 is equal to the outer diameter of the winding shaft 1. The drive wheel 54 is configured to rotate around its own axis in response to an external driving force, and the rotational action causes the transmission belt 56 to bend or extend relative to the drive wheel 54.

[0059] As mentioned earlier, when the required test length of the flexible test sample is larger than the outer diameter of the winding shaft 1, the winding shaft 1 needs to rotate multiple times to complete the test. Although the above problem can be solved by replacing the winding shaft 1 with one of suitable size, the operation is cumbersome and requires a variety of winding mechanisms and gears 50. In this embodiment, the driving wheel 54 winds the transmission belt 56 to simulate the situation of the winding shaft 1 winding the flexible test sample. This ensures that even when the flexible test sample is wound multiple times, the moving distance of the moving seat 3 is equal to the curling or stretching length of the flexible test sample relative to the winding shaft 1 due to the rotation of the winding shaft 1. This eliminates the need to replace the winding mechanism and gears 50.

[0060] In this embodiment, the two ends of the transmission belt 56 can be fixed to the drive wheel 54 and the counterweight 58 respectively by screws.

[0061] It should also be noted that, as Figure 7 As shown in the illustration, the "outer diameter of the drive wheel 54" in this embodiment refers to the radial dimension of the outer ring surface on which the transmission belt 56 can be wound. The structures extending radially outward from the drive wheel 54 on both sides are independent of the outer diameter of the drive wheel 54. These structures are used to limit the transmission belt 56 along the axial direction of the drive wheel 54.

[0062] Furthermore, when the flexible test sample is wound in multiple turns, the first arc-shaped pressure plate 21 will locally increase the outer diameter of the winding shaft 1, which will have a certain impact on the test data. Although the thickness of the first arc-shaped pressure plate 21 can be reduced as much as possible to mitigate the above-mentioned impact, it is still unavoidable. Therefore, this embodiment further improves the compensation component, such as... Figure 8 As shown, in an optional embodiment, the compensation assembly further includes a second clamping member. The drive wheel 54 has a connecting protrusion 540. The second clamping member includes a second arc-shaped pressure plate 59 and a second connecting portion 590 formed on the second arc-shaped pressure plate 59. The second arc-shaped pressure plate 59 covers the drive wheel 54 and both have the same curvature. The thickness of the second arc-shaped pressure plate 59 is equal to the thickness of the first arc-shaped pressure plate 21. The second connecting portion 590 is connected to the connecting protrusion 540 by screws so that the second arc-shaped pressure plate 59 can clamp and position one end of a transmission belt 56 of different thicknesses onto the drive wheel 54. The second arc-shaped pressure plate 59 can eliminate the aforementioned effects caused by the first arc-shaped pressure plate 21, further improving the accuracy of the test results.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A curling test device, characterized in that, It includes a winding mechanism, a moving mechanism and a transmission mechanism (5). The winding mechanism includes a winding shaft (1) that can rotate around its own axis and a first positioning structure (2) disposed on the winding shaft (1). The first positioning structure (2) is used to position one end of the flexible test sample on the winding shaft (1). The moving mechanism includes a moving seat (3) capable of moving along a set direction and a second positioning structure (4) disposed on the moving seat (3). The second positioning structure (4) is used to position the other end of the flexible test sample on the moving seat (3). The set direction is perpendicular to the axial direction of the winding shaft (1). The transmission mechanism (5) is connected to the winding shaft (1) and the moving seat (3) respectively. The transmission mechanism (5) is configured to drive the winding shaft (1) and the moving seat (3) to move synchronously in response to an external driving force, and to make the moving distance of the moving seat (3) equal to the curling length or stretching length of the flexible test sample that is curled or stretched relative to the winding shaft (1) by the rotation of the winding shaft (1).

2. The curling test device as described in claim 1, characterized in that, The transmission mechanism (5) includes a gear (50) and a rack (51) that mesh with each other. The outer diameter of the gear (50) is equal to the outer diameter of the winding shaft (1). The gear (50) is coaxially arranged with the winding shaft (1) and keyed. The length direction of the rack (51) is in the same direction as the set direction and is fixedly connected to the moving seat (3).

3. The curling test device as described in claim 2, characterized in that, The curling test device also includes a frame (6), which includes a support column (60) and a slide rail (61). The winding shaft (1) is rotatably mounted on the support column (60), and the movable seat (3) is slidably engaged with the slide rail (61).

4. The curling test device as described in claim 3, characterized in that, The support column (60) is provided with a plurality of rotating holes (600) along the height direction. The end of the winding shaft (1) is provided with a rotating shaft that is adapted to the rotating holes (600). The winding shaft (1) can be selectively inserted into a rotating hole (600) through the rotating shaft and rotated on the support column (60).

5. The curling test device as described in claim 3, characterized in that, The transmission mechanism (5) further includes a first connecting arm (52) and a second connecting arm (53). The first connecting arm (52) and the second connecting arm (53) are both slidably mounted on the slide rail (61). The movable seat (3) is disposed on the first connecting arm (52) and is slidably engaged with the slide rail (61) through the first connecting arm (52). The two ends of the rack (51) are fixedly mounted to the first connecting arm (52) and the second connecting arm (53) respectively.

6. The curling test apparatus as described in claim 5, characterized in that, A lifting adjustment structure is provided between the movable seat (3) and the first connecting arm (52), and the movable seat (3) can be selectively positioned at the required height relative to the first connecting arm (52) through the lifting adjustment structure.

7. The curling test apparatus according to any one of claims 1 to 6, characterized in that, The first positioning structure (2) includes a first fixing block (20) and a first clamping member. The first fixing block (20) is fixed on the winding shaft (1). The first clamping member includes a first arc-shaped pressure plate (21) and a first connecting part (210) formed on the first arc-shaped pressure plate (21). The first arc-shaped pressure plate (21) covers the winding shaft (1) and both have the same curvature. The first connecting part (210) is connected to the first fixing block (20) by screws so that the first arc-shaped pressure plate (21) can clamp and position one end of a flexible test sample of different thicknesses on the winding shaft (1).

8. The curling test apparatus as described in claim 7, characterized in that, The first arc-shaped pressure plate (21) also forms limiting portions (211) at both ends along the axial direction of the winding shaft (1), and the limiting portions (211) are used to limit one end of the flexible test sample along the axial direction of the winding shaft (1).

9. The curling test apparatus according to any one of claims 1 to 6, characterized in that, The second positioning structure (4) includes a pressure block (40), the movable seat (3) has a support surface (30), and the pressure block (40) is connected to the support surface (30) by screws so that the pressure block (40) can press and position the other end of a flexible test sample of different thicknesses on the support surface (30).

10. The curling test apparatus according to any one of claims 1 to 6, characterized in that, The curling test device also includes a power source and a control unit (7) for controlling the start and stop of the power source. The power source is connected to the transmission mechanism (5) and is used to apply the external driving force to the transmission mechanism (5).

11. The curling test apparatus according to any one of claims 2 to 6, characterized in that, The transmission mechanism (5) further includes a compensation component, which includes a drive wheel (54), a driven wheel (55), a transmission belt (56), a connecting block (57), and a counterweight (58). The two ends of the transmission belt (56) are fixedly connected to the drive wheel (54) and the counterweight (58) respectively, and the transmission belt (56) is tensioned between the drive wheel (54) and the driven wheel (55) by the counterweight (58). The connecting block (57) is fixedly connected to the transmission belt (56), and the connecting block (57) is fixedly connected to the moving seat (3) or the rack (51). The thickness of the transmission belt (56) is equal to the thickness of the flexible test sample, the outer diameter of the drive wheel (54) is equal to the outer diameter of the winding shaft (1), and the drive wheel (54) is configured to rotate about its own axis in response to an external driving force and drive the transmission belt (56) to bend or stretch relative to the drive wheel (54) through the rotation action.

12. The curling test apparatus as described in claim 11, characterized in that, The first positioning structure (2) includes a first fixing block (20) and a first clamping member. The first fixing block (20) is fixed on the winding shaft (1). The first clamping member includes a first arc-shaped pressure plate (21) and a first connecting part (210) formed on the first arc-shaped pressure plate (21). The first arc-shaped pressure plate (21) covers the winding shaft (1) and both have the same curvature. The first connecting part (210) is connected to the first fixing block (20) by screws so that the first arc-shaped pressure plate (21) can clamp and position one end of a flexible test sample of different thicknesses on the winding shaft (1). The compensation assembly further includes a second clamping member. The drive wheel (54) has a connecting protrusion (540). The second clamping member includes a second arc-shaped pressure plate (59) and a second connecting portion (590) formed on the second arc-shaped pressure plate (59). The second arc-shaped pressure plate (59) covers the drive wheel (54) and both have the same curvature. The thickness of the second arc-shaped pressure plate (59) is equal to the thickness of the first arc-shaped pressure plate (21). The second connecting portion (590) is connected to the connecting protrusion (540) by screws so that the second arc-shaped pressure plate (59) can press and position one end of a transmission belt (56) of different thicknesses onto the drive wheel (54).

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