Testing device and testing method

Abstract

The invention discloses a testing device and method, and the device comprises a pedestal which comprises a bottom plate and a first side plate disposed on the bottom plate, and the first side plate is provided with a through hole; the first fixing mechanism and the second fixing mechanism are respectively used for fixing the first end and the second end of the screen body; the twisting rod comprises a third end and a fourth end which are arranged at an interval in the first direction, the third end is connected with the second fixing mechanism, the fourth end penetrates through the first side plate through the through hole, the twisting rod comprises a twisting section, and the shape of the cross section, perpendicular to the first direction, of the twisting section is matched with the shape of the cross section, perpendicular to the first direction, of the through hole; the driving mechanism is connected with the fourth end of the twisting rod and used for driving the twisting rod to move in the first direction. The test device provided by the invention can be used for carrying out distortion test on the screen body.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a testing device and a testing method. Background Art

[0002] Among the current display technologies, Organic Light-Emitting Diode (OLED) display is an emerging display device, which has better color saturation and viewing angle than LCD panels. In addition, some flexible OLEDs are easy to be rolled up, which has a wider application space. Therefore, OLED displays are gradually being widely used in mobile phones, cars and other fields, and flexible OLEDs are the future development direction.

[0003] In order to ensure that the flexible display panel does not fail after being curled, it is urgent to perform a curling test on the display panel to ensure the yield of the display panel. Summary of the invention

[0004] The present application mainly provides a testing device and a testing method for performing a distortion test on a display panel.

[0005] In order to solve the above technical problems, the technical solution adopted in the present application is: to provide a testing device, the testing device comprising: a base, comprising a bottom plate and a first side plate arranged on the bottom plate, the first side plate being provided with a through hole; a first fixing mechanism and a second fixing mechanism, both being located on the first side of the first side plate, the first fixing mechanism and the second fixing mechanism being used to fix the first end and the second end of the screen body respectively, wherein in the first direction, the first fixing mechanism, the second fixing mechanism and the first side plate are arranged in sequence; a twisting rod, comprising a third end and a fourth end arranged at intervals in the first direction, the third end being connected to the second fixing mechanism to drive the second fixing mechanism to move along the first direction, the fourth end passing through the first side plate through the through hole, the twisting rod comprising a twisting segment, the shape of the cross section of the twisting segment perpendicular to the first direction matches the shape of the cross section of the through hole perpendicular to the first direction, wherein, in the process of the twisting rod moving along the first direction, when the twisting segment passes through the through hole, the second fixing mechanism rotates while moving along the first direction; a driving mechanism connected to the fourth end of the twisting rod, for driving the twisting rod to move along the first direction; wherein the first direction is the direction in which the twisting rod extends.

[0006] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a testing method, which is applied to the above testing device, and the method includes: fixing the first end of the screen body on the first fixing mechanism, and fixing the second end of the screen body on the second fixing mechanism; controlling the driving mechanism to drive the twisting rod to move in the first direction, so that when the twisting segment passes through the through hole, it drives the second fixing mechanism to move in the first direction and rotate at the same time.

[0007] The beneficial effects of the present application are as follows: in the present application, the first and second ends of the screen body that are relatively arranged are fixed respectively by the first fixing mechanism and the second fixing mechanism, the third end of the twisting rod is connected to the second fixing mechanism, and the fourth end of the twisting rod passes through the through hole on the first side plate and is connected to the driving mechanism. The twisting rod is a rod body with a twisting angle, including a twisting segment. In the process of the twisting rod moving away from the first fixing mechanism, when the twisting segment passes through the through hole, the twisting segment will rotate, thereby driving the screen body to stretch and rotate. Therefore, the setting of the twisting rod in the present application enables the test device to perform stretching and twisting tests on the screen body at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0009] Figure 1 This is a schematic diagram of the structure of an implementation method of a testing device in this application;

[0010] Figure 2 for Figure 1 A schematic structural diagram of an embodiment of a twisted rod;

[0011] Figure 3 for Figure 1 A schematic diagram of the structure of the connection between the middle driving mechanism and the twisted rod;

[0012] Figure 4 for Figure 1 Schematic diagram of the partial structure of the twisted rod;

[0013] Figure 5 for Figure 1 A schematic structural diagram of an embodiment of the first side plate;

[0014] Figure 6 This is a flow chart of an implementation method of the test method in this application;

[0015] Figure 7 for Figure 6 Schematic diagram of the process of step S20 in an implementation manner.

[0016] Explanation of the reference numerals: 11 bottom plate; 12 first side plate; 13 through hole; 14 second side plate; 20 first fixing mechanism; 21 first clamping portion; 22 first semi-axis; 23 second semi-axis; 30 second fixing mechanism; 31 second clamping portion; 32 first plate body; 33 second plate body; 40 twisted rod; 41 twisted section; protrusion 411; 42 straight section; third end 401; fourth end 402; 50 driving mechanism; 51 motor; 52 output shaft; 53 worm gear; connecting rod 54; first groove 541; second groove 542; 60 screen body; 61 first end; 62 second end. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0019] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0022] See also Figure 1 and Figure 2 The present application provides a testing device, which includes a base, a first fixing mechanism 20, a second fixing mechanism 30, a twisting rod 40 and a driving mechanism 50; wherein the base includes a bottom plate 11 and a first side plate 12 arranged on the bottom plate 11, and the first side plate 12 is provided with a through hole 13; the first fixing mechanism 20 and the second fixing mechanism 30 are both located on the first side of the first side plate 12, the first fixing mechanism 20 is used to fix the first end 61 of the screen body 60, and the second fixing mechanism 30 is used to fix the second end 62 of the screen body 60, wherein in a first direction X, the first fixing mechanism 20, the second fixing mechanism 30 and the first side plate 12 are arranged in sequence; the twisting rod 40 extends along the first direction X, and includes a third end 401 and a fourth end 402 arranged at intervals in the first direction X, and the twisting rod 40 The third end 401 of the twisting rod 40 is connected to the second fixing mechanism 30 to drive the second fixing mechanism 30 to move along the first direction X. The fourth end 402 of the twisting rod 40 passes through the first side plate 12 through the through hole 13. The twisting rod 40 includes a twisting segment 41. The shape of the cross section of the twisting segment 41 perpendicular to the first direction X matches the shape of the cross section of the through hole 13 perpendicular to the first direction X. When the twisting rod 40 moves along the first direction X, the twisting rod 40 drives the second fixing mechanism 30 to move along the first direction 40. When the twisting segment 41 passes through the through hole 13, the twisting segment 41 rotates, thereby driving the second fixing mechanism 30 to rotate while moving along the first direction X. The driving mechanism 50 is connected to the fourth end 402 of the twisting rod 40, and is used to drive the twisting rod 40 to move along the first direction X.

[0023] Specifically, the first fixing mechanism 20 is used to fix the first end 61 of the screen body 60, the second fixing mechanism 30 is used to fix the second end 62 of the screen body 60, the third end 401 of the twisting rod 40 is connected to the second fixing mechanism 30, the fourth end 402 of the twisting rod 40 is connected to the driving mechanism 50, the twisting rod 40 extends along the first direction X, and the driving mechanism 50 is used to drive the twisting rod 40 to perform translational motion in the first direction X.

[0024] At the same time, the twisting section 41 has a twisting angle. When the driving mechanism 50 drives the twisting rod 40 to move away from the first fixing mechanism 20 in the first direction X, the twisting rod 40 will rotate when the twisting section 41 passes through the through hole 13. That is to say, in the process of the twisting section 41 passing through the through hole 13, the twisting rod 40 will both rotate and move away from the first fixing mechanism 20 in the first direction X. Since the second fixing mechanism 30 is connected to the twisting rod 40, and the second fixing mechanism 30 is connected to the second end 62 of the screen body 60, the twisting rod 40 can drive the screen body 60 to stretch and rotate in the process of the twisting rod 40 moving away from the first fixing mechanism 20. Therefore, the setting of the twisting rod 40 in the present application enables the testing device to perform stretching and twisting tests on the screen body 60 at the same time.

[0025] In order to ensure that the twisted segment 41 passes through the through hole 13 smoothly, the size of the cross section of the twisted segment 41 perpendicular to the first direction X is set to be slightly smaller than the size of the cross section of the through hole 13 perpendicular to the first direction X.

[0026] Please continue reading Figure 1 The first fixing mechanism 20 includes a first clamping portion 21 for clamping the first end 61 of the screen body 60. Specifically, the first clamping portion 21 of the first fixing mechanism 20 clamps the first end 61 of the screen body 60 to fix the first end 61 of the screen body 60.

[0027] In one embodiment, the first clamping portion 21 includes a first semi-axis 22 and a second semi-axis 23 which are arranged opposite to each other, a clamping space for clamping the screen body 60 is formed between the first semi-axis 22 and the second semi-axis 23, and the arc surface of the first semi-axis 22 and the arc surface of the second semi-axis 23 constitute a winding surface of the first clamping portion 21 for winding the screen body 60. Specifically, the combination of the first semi-axis 22 and the second semi-axis 23 in the first clamping portion 21 is convenient for clamping the screen body 60, and the design of the first semi-axis 22 and the second semi-axis 23 is convenient for performing a winding test on the screen body 60. When performing the winding test, the screen body 60 can be wound on the arc surfaces of the first semi-axis 22 and the second semi-axis 23.

[0028] Please continue reading Figure 1 and Figure 2The base further includes a second side plate 14 disposed on the bottom plate 11, and the first fixing mechanism 20 is rotatably connected to the second side plate 14; the twisting rod 40 further includes a straight section 42, and the straight section 42 is disposed on the side of the twisting section 41 away from the second fixing mechanism 30 and connected to the twisting section 41. Specifically, the design of the second side plate 14 allows the first fixing mechanism 20 to rotate. After the first fixing mechanism 20 clamps the screen body 60, the first fixing mechanism 20 rotates to roll the screen body 60 around the outer surface of the first fixing mechanism 20. At the same time, the twisting rod 40 includes a straight section 42. When the straight section 42 passes through the through hole 13, the screen body 60 will not be twisted, so that the screen body 60 is unfolded or rolled in a straight posture. Therefore, the design of the straight section 42 allows the screen body 60 to be rolled flat on the first fixing mechanism 20, and the screen body 60 will not be wrinkled during the reel test. Therefore, the design of the straight section 42 and the twisted section 41 in the twisted rod 40 can realize the tensile torsion test and the tensile winding test on the screen body 60 .

[0029] That is to say, in this embodiment, when the driving mechanism 50 drives the twisting rod 40 to move away from the first fixing mechanism 20 in the first direction X, when the straight section 42 passes through the through hole 13, the screen body 60 is stretched in a straight posture, and when the twisted section 41 passes through the through hole 13, the screen body 60 is stretched in a twisted posture; when the driving mechanism 50 drives the twisting rod 40 to approach the first fixing mechanism 20 in the first direction X, when the straight section 42 passes through the through hole 13, the first fixing mechanism 20 is controlled to rotate, so that the screen body 60 is wound on the first fixing mechanism 20 in a straight posture.

[0030] In an application scenario, when the straight section 42 is located on the side of the first side plate 14 away from the first fixing mechanism 20 and at least part of the twisted section 41 is located between the first fixing mechanism 20 and the first side plate 14, the driving mechanism 50 drives the twisted rod 40 to move away from the first fixing mechanism 20 in the first direction X so that the twisted section 41 passes through the through hole 13, wherein when the twisted section 41 passes through the through hole 13, the screen body 60 is stretched in a twisted posture. Specifically, in this application scenario, since the straight section 42 is already located on the side of the first side plate 14 away from the first fixing mechanism 20 in the initial state, only the twisted section 41 will pass through the through hole 13 during the process of the driving mechanism 50 driving the twisted rod 40 away from the first fixing mechanism 20, and therefore the screen body 60 will only be stretched in a twisted state during this process.

[0031] In another application scenario, when at least a portion of the straight section 42 is located between the first fixing mechanism 20 and the first side plate 14, the driving mechanism 50 drives the twisting rod 40 to move away from the first fixing mechanism 20 in the first direction X, so that the straight section 42 and the twisted section 41 pass through the through hole 13 one after another, wherein when the straight section 42 passes through the through hole 13, the screen body 60 is stretched in a flattened posture, and when the twisted section 41 passes through the through hole 13, the screen body 60 is stretched in a twisted posture. Specifically, in this application scenario, since at least a portion of the straight section 42 is located between the first fixing mechanism 20 and the first side plate 14 in the initial state, when the driving mechanism 50 drives the twisting rod 40 to move away from the first fixing mechanism 20 in the first direction X, the straight section 42 and the twisted section 41 will pass through the through hole 13 one after another, so that the screen body 60 is first stretched in a straight posture and then stretched in a twisted posture.

[0032] In another application scenario, when the straight section 42 is located on the side of the first side plate 14 away from the first fixing mechanism 20, the driving mechanism 50 drives the twisting rod 40 to move close to the first fixing mechanism 20 in the first direction X, wherein when the straight section 42 passes through the through hole 13, the first fixing mechanism 20 rotates to drive the screen body 60 to be wound around the first fixing mechanism 20. In this embodiment, in the initial state, the straight section 42 and the twisting section 41 are both located on the side of the first side plate 12 away from the first fixing mechanism 20. At this time, when the driving mechanism 50 drives the twisting rod 40 to move close to the first fixing mechanism 20 in the first direction X, when the twisting section 41 passes through the through hole 13, the screen body 60 gradually recovers from the twisted state to the straight state, and then when the straight section 42 passes through the through hole 13, the first fixing mechanism 20 is driven to rotate, so that the screen body 60 can be wound around the first fixing mechanism 20 in a straight state.

[0033] In one embodiment, the twisted section 41 and the straight section 42 are integrally formed. Specifically, the integrally formed arrangement improves the preparation efficiency of the twisted section 41 and the straight section 42. Of course, in other embodiments, the twisted section 41 and the straight section 42 can also be prepared separately. After the preparation is completed, the twisted section 41 and the straight section 42 are connected together to form the twisted rod 40.

[0034] It should be noted that, in other embodiments, the straight section 42 may also be located on the side of the twisted section 41 close to the first fixing mechanism 20, or in other embodiments, the number of straight sections 42 may be multiple, for example, two, and the multiple straight sections 42 may be distributed on both sides of the twisted section 41, or, in other embodiments, the number of twisted sections 41 is multiple, the multiple twisted sections 41 are arranged at intervals in the first direction X, and a straight section 42 is connected between two adjacent twisted sections 41. In short, the number and relative positions of the twisted sections 41 and the straight sections 42 may be set according to the test requirements.

[0035] In one embodiment, the material of the twisted rod 40 includes a metal material. The metal material has high hardness and is wear-resistant, which is conducive to improving the overall service life of the test device. Specifically, the material of the twisted rod 40 includes one or more metal materials such as copper, iron, and stainless steel.

[0036] In one embodiment, the testing device further includes a tension sensor, which is used to detect the tension of the driving mechanism 50 on the screen 60, wherein, in response to the tension being greater than or equal to a first threshold, the driving mechanism 50 drives the twisting rod 40 to move closer to the first fixing mechanism 20, and in response to the tension being less than or equal to a second threshold, the driving mechanism 50 drives the twisting rod 40 to move away from the first fixing mechanism 20, wherein the second threshold is less than the first threshold.

[0037] Specifically, the first threshold value may be the pulling force value when the driving mechanism 50 stretches the screen body 60 to the limit position, or the first threshold value may be slightly less than the pulling force value when the driving mechanism 50 stretches the screen body 60 to the limit position. The second threshold value may be 0, or slightly greater than 0. When the pulling force applied by the driving mechanism 50 to the screen body 60 is less than the first threshold value, it indicates that the screen body 60 is not stretched.

[0038] When the pulling force is greater than or equal to the first threshold, it indicates that the stretching of the screen body 60 has reached the limit position. To avoid damage to the screen body 60 , the driving mechanism 50 drives the twisting rod 40 to move toward the first fixing mechanism 20 .

[0039] When the pulling force is less than or equal to the second threshold, it indicates that the driving mechanism 50 does not stretch the screen body 60 at this time, so the driving mechanism 50 drives the twisting rod 40 to move in a direction away from the first fixing mechanism 20 and starts to stretch the screen body 60 .

[0040] Please continue reading Figure 1 The second fixing mechanism 30 includes a second clamping portion 31 for clamping the second end 62 of the screen body 60. The second clamping portion 31 clamps the second end 62 of the screen body 60, so that the second fixing mechanism 30 fixes the second end 62 of the screen body 60.

[0041] In one embodiment, the second clamping portion 31 includes a first plate 32 and a second plate 33 that are arranged oppositely and in parallel, and the first plate 32 and the second plate 33 cooperate with each other to clamp the second end 62 of the screen 60. Specifically, the first plate 32 and the second plate 33 are opposite to each other and are arranged in parallel. When the distance between the first plate 32 and the second plate 33 is equal to the thickness of the screen 60, at this time, the first plate 32 and the second plate 33 achieve the clamping of the second end 62 of the screen 60. The clamping method is simple in design and easy to implement, and has a good fixing effect on the second end 62 of the screen 60.

[0042] In one embodiment, the first plate body 32 and the second plate body 33 have the same structure. Specifically, the first plate body 32 and the second plate body 33 having the same structure are easy to prepare and use.

[0043] In one embodiment, the material of the first plate 32 or the second plate 33 includes at least one of bakelite (ie, phenolic plastic), acrylic, and metal. When the hardness of the first plate 32 and the second plate 33 is relatively large, in order to ensure the clamping effect while not damaging the screen 60, a buffer layer can be provided where the first plate 32 and the second plate 33 contact the screen 60.

[0044] See also Figure 3 The driving mechanism 50 includes a motor 51 and a connecting rod 54. A worm gear 53 is sleeved on the outer periphery of the output shaft 52 of the motor 51. The connecting rod 54 extends along the first direction X, and the connecting rod 54 is provided with a plurality of first grooves 541 meshing with the worm gear 53. The plurality of first grooves 541 are arranged at intervals in the first direction X. At the same time, the connecting rod 54 is rotatably connected to the fourth end 402 of the twisted segment 41.

[0045] Specifically, a plurality of first grooves 541 are arranged at intervals in the first direction X and the plurality of first grooves 541 are meshed with the worm wheel 53, so that as the worm wheel 53 rotates, the connecting rod 54 moves along the first direction X, and since the twisting rod 40 is connected to the connecting rod 54, as the connecting rod 54 moves along the first direction X, the twisting rod 40 also moves along the first direction X, that is, during the rotation of the worm wheel 53, the twisting rod 40 and the connecting rod 54 move synchronously in the first direction X. At the same time, the connecting rod 54 is rotatably connected to the fourth end 402 of the twisting segment 41, so that when the twisting segment 41 rotates through the through hole 13, the connecting rod 54 does not rotate. That is to say, during the rotation of the worm wheel 53, the twisting segment 41 and the connecting rod 54 perform synchronous translational motion in the first direction X, and when the twisting segment 41 passes through the through hole 13, the twisting segment 41 rotates while translating, and the connecting rod 54 only performs translational motion.

[0046] In one embodiment, the twisting section 41 is connected to the connecting rod 54 by a ball joint, for example, see Figure 4 The end of the twisting rod 40 is provided with a spherical protrusion 411, and the end of the connecting rod 54 is provided with a second groove 542 that receives the protrusion 411 and matches the shape of the protrusion 411. The protrusion 411 is always limited in the second groove 542, but the protrusion 411 can rotate in the second groove 542, so that the twisting rod 40 can rotate relative to the connecting rod 54.

[0047] In another embodiment, the twisted rod 40 includes a twisted section 41 and a straight section 42 connected in sequence, in which case the straight section 42 is rotatably connected to the connecting rod 54, for example, rotatably connected by a ball joint, and the twisted section 41 and the straight section 42 can be fixedly connected or rotatably connected. When the twisted section 41 and the straight section 42 are fixedly connected, the twisted section 41 rotates and the straight section 42 rotates synchronously. When the twisted section 41 and the straight section 42 are rotatably connected, the twisted section 41 rotates and the straight section 42 does not rotate. In short, there is no limitation on the connection method between the twisted section 41 and the straight section 42, as long as the twisted rod 40 and the connecting rod 54 are rotatably connected.

[0048] See also Figure 2 and Figure 5 The cross section of the twisted segment 41 perpendicular to the first direction X is a regular polygon, and the cross section of the through hole 13 perpendicular to the first direction X is a regular polygon. This arrangement can ensure that when the twisted segment 41 passes through the through hole 13, the twisted segment 41 automatically rotates, thereby driving the screen body 60 to twist.

[0049] See also Figure 2 and Figure 5 , the cross section of the twisted segment 41 perpendicular to the first direction X is a square, and the cross section of the through hole 13 perpendicular to the first direction X is a square. Of course, in other embodiments, the cross sections of the twisted segment 41 and the through hole 13 perpendicular to the first direction X may also be other polygons such as regular hexagons.

[0050] See also Figure 6 The present application also provides a testing method, which is applied to the above-mentioned testing device, combined with Figures 1 to 5 , methods include:

[0051] S10 : fixing the first end 61 of the screen body 60 on the first fixing mechanism 20 , and fixing the second end 62 of the screen body 60 on the second fixing mechanism 30 .

[0052] The first end 61 and the second end 62 of the screen body 60 are arranged relatively to each other. The first fixing mechanism 20 is used to fix the first end 61 of the screen body 60 , and the second fixing mechanism 30 is used to fix the second end 62 of the screen body 60 . The position of the screen body 60 is fixed by the first fixing mechanism 20 and the second fixing mechanism 30 .

[0053] S20 : ​​controlling the driving mechanism 50 to drive the twisting rod 40 to move in the first direction X, so that when the twisting segment 41 passes through the through hole 13 , it drives the second fixing mechanism 30 to move in the first direction X and rotate at the same time.

[0054] The driving mechanism 50 can drive the twisting rod 40 to move closer to or away from the first fixing mechanism 20 in the first direction X. As can be seen from the above content, since the twisting section 41 has a certain twisting angle, when the twisting section 41 passes through the through hole 13, the twisting section 41 will rotate, thereby driving the second fixing mechanism 30 to move in the first direction X and rotate at the same time, and finally achieving the twisting of the screen body 60. Therefore, the screen body 60 can be subjected to a tensile twisting test by the above method.

[0055] Specifically, see Figure 7 , step S20 further includes:

[0056] S21 : in response to the pulling force of the driving mechanism 50 on the screen body 60 being greater than or equal to the first threshold, the driving mechanism 50 drives the twisting rod 40 to move closer to the first fixing mechanism 20 .

[0057] Specifically, when the pulling force is greater than or equal to the first threshold, it indicates that the stretching of the screen body 60 by the driving mechanism 50 has reached the limit position. To avoid damage to the screen body 60 , the driving mechanism 50 drives the twisting rod 40 to move toward the first fixing mechanism 20 .

[0058] S22: In response to the pulling force of the driving mechanism 50 on the screen 60 being less than or equal to a second threshold, the driving mechanism 50 drives the twisting rod 40 to move away from the first fixing mechanism 20, wherein the second threshold is less than the first threshold.

[0059] Specifically, when the pulling force is less than or equal to the second threshold, it indicates that the driving mechanism 50 does not stretch the screen body 60 at this time, so the driving mechanism 50 drives the twisting rod 40 to move in a direction away from the first fixing mechanism 20 and starts to stretch the screen body 60 .

[0060] In one embodiment, the above step S20 further specifically includes:

[0061] S22: When the straight section 42 is located on the side of the first side plate 14 away from the first fixing mechanism 20 and at least a portion of the twisted section 41 is located between the first fixing mechanism 20 and the first side plate 14, the driving mechanism 50 drives the twisting rod 40 to move away from the first fixing mechanism 20 in the first direction X so that the twisted section 41 passes through the through hole 13, wherein when the twisted section 41 passes through the through hole 13, the screen body 60 is stretched in a twisted posture.

[0062] S23: When at least a portion of the straight section 42 is located between the first fixing mechanism 20 and the first side plate 14, the driving mechanism 50 drives the twisting rod 40 to move away from the first fixing mechanism 20 in the first direction X, so that the straight section 42 and the twisted section 41 pass through the through hole 13 successively, wherein when the straight section 42 passes through the through hole 13, the screen body 60 is stretched in a flattened posture, and when the twisted section 41 passes through the through hole 13, the screen body 60 is stretched in a twisted posture.

[0063] S24: When the straight section 42 is located on the side of the first side plate 14 away from the first fixing mechanism 20, the driving mechanism 50 drives the twisting rod 40 to move in the first direction X close to the first fixing mechanism 20, wherein when the straight section 42 passes through the through hole 13, the first fixing mechanism 20 rotates to drive the screen body 60 to be wound around the first fixing mechanism 20.

[0064] In order to better understand the above test process, it is explained below in combination with a specific application scenario. In this scenario, in the initial state, the screen body 60 is wound on the first fixing mechanism 20, and the twisted section 41 and the straight section 42 are both located between the second fixing mechanism 30 and the first side panel 12.

[0065] During the test, the driving mechanism 50 drives the twisting rod 40 to move in the first direction X away from the first fixing mechanism 20 (the process includes: the output shaft 52 of the motor 51 rotates, thereby driving the worm gear 53 to rotate, and as the worm gear 53 rotates, the connecting rod 54 moves away from the first fixing mechanism 20 in the first direction X, and then the entire twisting rod 40 moves away from the first fixing mechanism 20 in the first direction X). At this time, during the movement of the twisting rod 40, the straight section 42 first passes through the through hole 13, and during the process of the straight section 42 passing through the through hole 13, the screen body 60 is unfolded in a straight posture.

[0066] After the screen body 60 is fully unfolded, if part of the straight section 42 is still located between the first fixing mechanism 20 and the first side plate 12, as the twisting rod 40 continues to move away from the first fixing mechanism 20, the straight section 42 continues to pass through the through hole 13, and the screen body 60 is stretched in a straight posture. At this time, a straight stretching test can be performed on the screen body 60. Of course, it is also possible that: after the screen body 60 is fully unfolded, the straight section 42 is completely located on the side of the first side plate 12 away from the first fixing mechanism 20, and then as the twisting section 41 passes through the through hole 13, the twisting stretching test is directly performed on the screen body 60.

[0067] After the straight section 42 is completely located on the side of the first side plate 12 away from the first fixing mechanism 20, the twisted section 41 passes through the through hole 13. As the twisted section 41 passes through the through hole 13, the twisted section 41 drives the second fixing mechanism 30 to move in the first direction X while also rotating, so that the screen body 60 is twisted while being stretched. Therefore, the screen body 60 can be subjected to a twisting and stretching test at this time.

[0068] At the same time, when the twisting rod 40 moves away from the first fixing mechanism 20, when it is detected that the pulling force of the driving mechanism 50 on the screen body 60 is greater than or equal to the first threshold value, it indicates that the stretching of the screen body 60 has reached the limit position. Therefore, in order to avoid damaging the screen body 60, the motor 51 rotates in the opposite direction, thereby driving the twisting rod 40 to move in the first direction X close to the first fixing mechanism 20.

[0069] When the twisting rod 40 moves toward the first fixing mechanism 20, the twisting section 41 first passes through the through hole 13. When the twisting section 41 passes through the through hole 13 and moves to between the first fixing mechanism 20 and the first side plate 12, the screen body 60 gradually recovers from the twisted state to the straight state.

[0070] Then, as the straight section 42 passes through the through hole 13, the screen body 60 gradually recovers from the stretched state to the natural unstretched state. At this time, when it is detected that the pulling force on the screen body 60 is less than or equal to the second threshold, the twisting rod 40 can be driven to move away from the first fixing mechanism 20 in the first direction X, or the twisting rod 40 can continue to be driven to move toward the first fixing mechanism 20, and the first fixing mechanism 20 can be driven to rotate, so that the screen body 60 is wound on the first fixing mechanism 20.

[0071] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A testing device, characterized in that: include: The base comprises a bottom plate and a first side plate arranged on the bottom plate, wherein the first side plate is provided with a through hole; A first fixing mechanism and a second fixing mechanism are both located on a first side of the first side plate, and the first fixing mechanism and the second fixing mechanism are used to fix a first end and a second end of the screen body, respectively, wherein in a first direction, the first fixing mechanism, the second fixing mechanism and the first side plate are arranged in sequence; a twisting rod, comprising a third end and a fourth end spaced apart in the first direction, the third end being connected to the second fixing mechanism to drive the second fixing mechanism to move along the first direction, the fourth end passing through the first side plate via the through hole, the twisting rod comprising a twisting segment, the shape of a cross section of the twisting segment perpendicular to the first direction matching the shape of a cross section of the through hole perpendicular to the first direction, wherein, during the movement of the twisting rod along the first direction, when the twisting segment passes through the through hole, the second fixing mechanism rotates while moving along the first direction; a driving mechanism connected to the fourth end of the twisted rod and configured to drive the twisted rod to move along the first direction; Wherein, the first direction is the direction in which the twisted rod extends.

2. The testing device according to claim 1, characterized in that: The first fixing mechanism includes a first clamping portion for clamping the first end of the screen body.

3. The testing device according to claim 2, characterized in that: The base further includes a second side plate arranged on the bottom plate, and the first fixing mechanism is rotatably connected to the second side plate; the twisted rod further includes a straight section, and the straight section is arranged on a side of the twisted section away from the second fixing mechanism and connected to the twisted section; Preferably, the twisted section and the straight section are integrally formed; Preferably, the material of the twisted rod includes a metal material; Preferably, the first clamping portion includes a first semi-axis and a second semi-axis that are relatively arranged, and a clamping space for clamping the screen body is formed between the first semi-axis and the second semi-axis. At the same time, the arc surface of the first semi-axis and the arc surface of the second semi-axis constitute the winding surface of the first clamping portion for winding the screen body.

4. The testing device according to claim 3, characterized in that: The testing device further comprises: A tension sensor is used to detect the tension of the driving mechanism on the screen, wherein in response to the tension being greater than or equal to a first threshold, the driving mechanism drives the twisting rod to move closer to the first fixing mechanism, and in response to the tension being less than or equal to a second threshold, the driving mechanism drives the twisting rod to move away from the first fixing mechanism, and the second threshold is less than the first threshold.

5. The testing device according to claim 1, characterized in that: The second fixing mechanism includes a second clamping portion for clamping the second end of the screen body; Preferably, the second clamping portion comprises a first plate and a second plate that are arranged oppositely and in parallel, and the first plate and the second plate cooperate with each other to clamp the second end of the screen body; Preferably, the first plate body and the second plate body have the same structure; Preferably, the material of the first plate body / the second plate body includes at least one of phenolic plastic, acrylic and metal.

6. The testing device according to claim 1, characterized in that: The driving mechanism comprises a motor and a connecting rod, the outer periphery of the output shaft of the motor is provided with a worm gear, the connecting rod extends along the first direction and is provided with a plurality of first grooves meshing with the worm gear, the plurality of first grooves are arranged at intervals in the first direction, and the connecting rod is rotatably connected to the fourth end of the twisting rod; Preferably, the fourth end of the twisted rod is connected to the connecting rod by means of a ball joint.

7. The testing device according to claim 1, characterized in that: The cross section of the twisted segment perpendicular to the first direction is a regular polygon, and the cross section of the through hole perpendicular to the first direction is a regular polygon; Preferably, a cross section of the twisted segment perpendicular to the first direction is square, and a cross section of the through hole perpendicular to the first direction is square.

8. A testing method, characterized in that: The method is applied to the testing device according to any one of claims 1 to 7, and the method comprises: Fixing the first end of the screen body to the first fixing mechanism, and fixing the second end of the screen body to the second fixing mechanism; The driving mechanism is controlled to drive the twisting rod to move in the first direction, so that when the twisting segment passes through the through hole, the second fixing mechanism is driven to move in the first direction and rotate at the same time.

9. The testing method according to claim 8, characterized in that: The method further comprises: In response to the pulling force of the driving mechanism on the screen being greater than or equal to a first threshold, the driving mechanism drives the twisting rod to move closer to the first fixing mechanism; Alternatively, in response to the pulling force of the driving mechanism on the screen being less than or equal to a second threshold, the driving mechanism drives the twisting rod to move away from the first fixing mechanism, wherein the second threshold is less than the first threshold.

10. The testing method according to claim 8, characterized in that: The twisted rod further comprises a straight section, which is arranged on a side of the twisted section away from the second fixing mechanism and connected to the twisted section; The step of controlling the driving mechanism to drive the twisting rod to move in the first direction so that the twisting segment drives the second fixing mechanism to move in the first direction and rotate simultaneously when passing through the through hole comprises: When the straight section is located on the side of the first side plate away from the first fixing mechanism and at least a portion of the twisted section is located between the first fixing mechanism and the first side plate, the driving mechanism is controlled to drive the twisted rod to move away from the first fixing mechanism in the first direction so that the twisted section passes through the through hole, wherein when the twisted section passes through the through hole, the screen body is stretched in a twisted posture; or When at least a portion of the straight section is located between the first fixing mechanism and the first side plate, the driving mechanism is controlled to drive the twisting rod to move away from the first fixing mechanism in the first direction, so that the straight section and the twisted section pass through the through hole in sequence, wherein when the straight section passes through the through hole, the screen body is stretched in a flattened posture, and when the twisted section passes through the through hole, the screen body is stretched in a twisted posture; or When the straight section is located on the side of the first side plate away from the first fixing mechanism, the driving mechanism is controlled to drive the twisting rod to move in the first direction close to the first fixing mechanism, wherein when the straight section passes through the through hole, the first fixing mechanism rotates to drive the screen body to be wound around the first fixing mechanism.

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