Testing device

Abstract

The utility model provides a testing device, which comprises a plurality of rollers and a first detection piece, each roller is wound with a piece to be tested, each roller is rotatably arranged around the axis of each roller, at least one roller is provided with a second detection piece, the second detection piece is used for detecting the tension of the piece to be tested wound on the roller, and the first detection piece is used for detecting the tension of the piece to be tested wound on the roller. The first detection piece is used for detecting the number of rotation turns of the roller; and the traction shaft is rotatably arranged around the axis of the traction shaft so as to pull the to-be-tested piece to be wound on the traction shaft after passing through each roller. The utility model solves the problem that the tension testing device in the prior art is inconvenient to complete the unwinding tension test of yarns with various lengths at one time.

Description

Technical Field

[0001] The utility model relates to the technical field of glass fiber performance testing, and particularly relates to a testing device. Background Art

[0002] In textile production, first, the yarn needs to be unwound from the yarn bobbin, and then passed through the drafting rollers and wound around the winding shaft for subsequent processing. However, during the unwinding process of the yarn, the tension of the yarn is prone to fluctuate, and the magnitude of the yarn tension directly affects the quality and weaving efficiency of semi-finished and finished products.

[0003] Therefore, it is necessary to test the tension fluctuation of the yarn in real time. Usually, a certain length of yarn is taken for unwinding tension testing, and the optimal tension of the yarn is determined by observing the tightness of the yarn. Then, during the unwinding process of a large number of yarns, the optimal tension is used as a reference to avoid the quality decline of semi-finished and finished products.

[0004] However, most of the tension testing devices cannot measure the length and real-time tension of the yarn for unwinding tension testing simultaneously, which is not convenient for completing the unwinding tension testing of yarns with multiple lengths at one time. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a testing device to solve the problem that the existing tension testing device is not convenient for completing the unwinding tension testing of yarns with multiple lengths at one time.

[0006] To achieve the above purpose, the utility model provides a testing device, including: a plurality of rollers and a first detecting member, with a test piece to be tested wound around each roller, each roller being rotatably arranged around its own axis, a second detecting member being arranged on at least one roller for detecting the tension of the test piece wound around this roller, and the first detecting member being used for detecting the number of rotation turns of this roller; a traction shaft rotatably arranged around its axis to traction the test piece to be tested to be wound around the traction shaft after passing through each roller.

[0007] Furthermore, the testing device further includes a mounting main body. Four of the plurality of rollers are respectively a first roller, a second roller, a third roller, and a fourth roller. The axes of the first roller, the second roller, the third roller, and the fourth roller all extend along a first preset direction. Along a second preset direction, the first roller, the second roller, the third roller, and the fourth roller are sequentially arranged on the mounting main body; along the vertical direction, the axial center heights of the first roller, the second roller, the fourth roller, and the third roller gradually increase. The second detecting member is arranged on the third roller, and the first detecting member is arranged on the mounting main body and faces the third roller to detect the number of rotation turns of the third roller; wherein, the first preset direction, the second preset direction, and the vertical direction are arranged perpendicular to each other pairwise.

[0008] Further, one of the plurality of rollers is a fifth roller, and the testing device further includes a connecting rod. The fifth roller is movably arranged on the connecting rod, the connecting rod is arranged on the mounting body, and the fifth roller is arranged on the side of the first roller away from the traction shaft, so that the test piece to be tested is sequentially wound around the fifth roller, the first roller, the second roller, the third roller and the fourth roller.

[0009] Further, a limiting ring is further arranged on the mounting body. The limiting ring is arranged on the side of the fourth roller close to the traction shaft, and the axial direction of the limiting ring is parallel to the second preset direction, so as to limit the test piece passing through the limiting ring.

[0010] Further, the testing device further includes a first guiding member. Along the second preset direction, the first guiding member is arranged between the mounting body and the traction shaft. The first guiding member includes a support frame and a guiding net. The guiding net is arranged on the support frame, and a first guiding hole is arranged on the guiding net, so that the test piece passing through the limiting ring is wound around the traction shaft after passing through the first guiding hole; wherein, along the vertical direction, the height of the first guiding hole is the same as the height of the limiting ring.

[0011] Further, the testing device further includes a driving member. The driving shaft of the driving member is drivingly connected to the traction shaft to drive the traction shaft to rotate.

[0012] Further, the testing device further includes a support member and a second guiding member. A second guiding hole is arranged on the second guiding member. Along the second preset direction, the second guiding member and the driving member are respectively arranged on both sides of the support member, so that the test piece passes through the first guiding hole and the second guiding hole in sequence and is wound around the traction shaft.

[0013] Further, the second guiding member includes a second connecting shaft and a second guiding shaft. The second connecting shaft extends along the vertical direction, the second guiding shaft extends along the first preset direction, both ends of the second connecting shaft are respectively connected to the support member and one end of the second guiding shaft, and a second guiding hole is arranged at the other end of the second guiding shaft. Along the vertical direction, the height of the second guiding hole is the same as the height of the traction shaft.

[0014] Further, the testing device further includes a display screen and a controller. The controller is arranged inside the mounting body, the display screen is arranged on the mounting body, both the first detecting member and the second detecting member are communicatively connected to the controller, and the controller is communicatively connected to the display screen, so that the display screen displays the detection results of the first detecting member and the second detecting member.

[0015] Further, the first detecting member includes a control portion and a sensing portion connected to each other. The sensing portion is disposed inside the third roller, and the control portion is communicatively connected to the controller. When the test specimen is wound around and passes through the third roller, the sensing portion detects the tension of the test specimen and feeds back the detection result to the controller through the control portion.

[0016] Applying the technical solution of the present utility model, the testing device includes a plurality of rollers, a first detecting member, and a traction shaft. The traction shaft rotates to traction the test specimen wound around each roller to move and wind around the traction shaft, so as to complete the unwinding of the test specimen. During this process, the second detecting member detects the tension of the test specimen wound around the roller, and the first detecting member is used to detect the number of rotation turns of the roller. Since the circumference of the roller is known, the first detecting member can detect the length of the test specimen wound around and passing through the roller. Therefore, the length of the test specimen wound around and passing through the roller can be accurately controlled, and further, the real-time tensions of test specimens with multiple lengths wound around and passing through the roller can be simultaneously tested, thus solving the problem in the prior art that the tension testing device is not convenient for completing the unwinding tension test of yarns with multiple lengths at one time. Description of the Drawings

[0017] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 A schematic structural diagram of an embodiment of the testing device and a yarn bobbin according to the present utility model is shown;

[0019] Figure 2 A schematic structural diagram of the first detecting member, the second detecting member, and the third roller of the testing device according to the present utility model is shown.

[0020] Among them, the above-mentioned drawings include the following reference numerals:

[0021] 1, test specimen; 10, first detecting member; 20, second detecting member; 30, yarn bobbin; 40, traction shaft; 41, driving member; 50, mounting main body; 51, first roller; 52, second roller; 53, third roller; 54, fourth roller; 55, fifth roller; 56, connecting rod; 57, limiting ring; 60, first guiding member; 61, support frame; 62, guiding net; 63, first guiding hole; 70, supporting member; 71, second guiding member; 73, second connecting shaft; 74, second guiding shaft; 81, display screen; 82, control portion; 531, sensing member. Detailed Embodiments

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0024] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0025] Please refer to Figure 1 and Figure 2 , the present utility model provides a testing device, including: a plurality of rollers and a first detecting member 10. A test piece 1 is wound around each roller. Each roller is rotatably arranged around its own axis. At least one roller is provided with a second detecting member 20 for detecting the tension of the test piece 1 wound around this roller, and the first detecting member 10 is used for detecting the number of rotation turns of this roller; a traction shaft 40 which is rotatably arranged around its axis to traction the test piece 1 to be wound around each roller and then wound around the traction shaft 40.

[0026] The testing device of the utility model includes a plurality of rollers, a first detecting member 10 and a traction shaft 40. The traction shaft 40 rotates to traction the test piece 1 wound around each roller to be wound around the traction shaft 40, so as to complete the unwinding of the test piece 1. During this process, a second detecting member 20 detects the tension of the test piece 1 wound around the roller, and the first detecting member 10 is used to detect the number of rotations of the roller. Since the circumference of the roller is known, the first detecting member 10 can detect the length of the test piece 1 wound through the roller. Therefore, the length of the test piece 1 wound through the roller can be accurately controlled, and then the real-time tensions of the test pieces 1 with various lengths wound through the roller can be tested simultaneously, thus solving the problem that the tension testing device in the prior art is not convenient to complete the unwinding tension test of yarns with various lengths at one time.

[0027] Specifically, the first preset direction is Figure 2 the horizontal direction shown in Figure 1 and the second preset direction is the x direction shown in

[0028] During specific implementation, the test piece 1 is a glass fiber. The test piece 1 is wound around a yarn bobbin 30. One end of the test piece 1 is connected to the traction shaft 40. Then, the rotation of the traction shaft 40 can drive the test piece 1 to leave the yarn bobbin 30. When the test piece 1 moves, it will drive each roller to rotate.

[0029] In this embodiment, the testing device further includes a mounting body 50. Four of the plurality of rollers are respectively a first roller 51, a second roller 52, a third roller 53 and a fourth roller 54. The axes of the first roller 51, the second roller 52, the third roller 53 and the fourth roller 54 all extend along the first preset direction. Along the second preset direction, the first roller 51, the second roller 52, the third roller 53 and the fourth roller 54 are sequentially arranged on the mounting body 50; along the vertical direction, the axial center heights of the first roller 51, the second roller 52, the fourth roller 54 and the third roller 53 gradually increase. The second detecting member 20 is arranged on the third roller 53, and the first detecting member 10 is arranged on the mounting body 50 and faces the third roller 53 to detect the number of rotations of the third roller 53; wherein, the first preset direction, the second preset direction and the vertical direction are arranged perpendicular to each other in pairs.

[0030] Specifically, the first roller 51, the second roller 52, the third roller 53 and the fourth roller 54 are used to support and guide the test piece 1, so as to facilitate the winding of the test piece 1 around the traction shaft 40. The second detecting member 20 is used to detect the tension of the test piece 1 wound around the third roller 53, and the first detecting member 10 is used to detect the number of rotations of the third roller 53, so as to obtain the length of the test piece 1 wound through the third roller 53.

[0031] In this embodiment, one of the plurality of rollers is the fifth roller 55. The testing device further includes a connecting rod 56. The fifth roller 55 is movably arranged on the connecting rod 56. The connecting rod 56 is arranged on the mounting body 50. The fifth roller 55 is arranged on a side of the first roller 51 away from the traction shaft 40, so that the test piece 1 to be tested is wound around the fifth roller 55, the first roller 51, the second roller 52, the third roller 53 and the fourth roller 54 in sequence.

[0032] Specifically, the connecting rod 56 is used to connect the fifth roller 55 and the mounting body 50, so that the connecting rod 56 can support the fifth roller 55. After the test piece 1 to be tested leaves the yarn bobbin 30, it is wound around the fifth roller 55. The fifth roller 55 is used to guide and support the test piece 1 to be tested, so that the test piece 1 to be tested can be wound around the first roller 51 after passing through the fifth roller 55.

[0033] In this embodiment, a limiting ring 57 is further arranged on the mounting body 50. The limiting ring 57 is arranged on a side of the fourth roller 54 close to the traction shaft 40. The axial direction of the limiting ring 57 is parallel to the second preset direction, so that the limiting ring 57 limits the test piece 1 passing through the limiting ring 57.

[0034] Specifically, the limiting ring 57 is used to guide and limit the test piece 1, which helps the test piece 1 to be wound around the traction shaft 40 smoothly after passing through the limiting ring 57.

[0035] In this embodiment, the testing device further includes a first guiding member 60. Along the second preset direction, the first guiding member 60 is arranged between the mounting body 50 and the traction shaft 40. The first guiding member 60 includes a support frame 61 and a guiding net 62. The guiding net 62 is arranged on the support frame 61. A first guiding hole 63 is arranged on the guiding net 62, so that the test piece 1 passing through the limiting ring 57 is wound around the traction shaft 40 after passing through the first guiding hole 63. Among them, along the vertical direction, the height of the first guiding hole 63 is the same as the height of the limiting ring 57.

[0036] Specifically, the first guiding member 60 is used to support and guide the test piece 1, which is convenient for the test piece 1 to be wound around the traction shaft 40 smoothly after passing through the first guiding hole 63. The height of the first guiding hole 63 is the same as the height of the limiting ring 57, which can prevent the test piece 1 from being lifted by the guiding net 62 and being subjected to the pulling force from the guiding net 62, and avoid the sudden change of the tension of the test piece 1, affecting the quality of the test piece 1.

[0037] In this embodiment, the testing device further includes a driving member 41. The driving shaft of the driving member 41 is drivingly connected to the traction shaft 40 to drive the traction shaft 40 to rotate.

[0038] Specifically, the driving member 41 is used to drive the traction shaft 40 to rotate, ensuring that the traction shaft 40 can smoothly traction the test piece 1 to move. Among them, the driving member 41 is a motor, and the output shaft of the motor is connected to the traction shaft 40.

[0039] In this embodiment, the test device further includes a support member 70 and a second guiding member 71. A second guiding hole is provided on the second guiding member 71. Along the second preset direction, the second guiding member 71 and the driving member 41 are respectively arranged on both sides of the support member 70, so that the test piece 1 passes through the first guiding hole 63 and the second guiding hole in sequence and then is wound around the traction shaft 40.

[0040] Specifically, the second guiding member 71 is used to guide and support the test piece 1, guide the test piece 1 passing through the first guiding hole 63 into the second guiding hole, and then guide the test piece 1 to the traction shaft 40, facilitating the test piece 1 to be smoothly wound around the traction shaft 40.

[0041] In this embodiment, the second guiding member 71 includes a second connecting shaft 73 and a second guiding shaft 74. The second connecting shaft 73 extends along the vertical direction, and the second guiding shaft 74 extends along the first preset direction. Both ends of the second connecting shaft 73 are respectively connected to the support member 70 and one end of the second guiding shaft 74. A second guiding hole is provided at the other end of the second guiding shaft 74. Along the vertical direction, the height of the second guiding hole is the same as the height of the traction shaft 40.

[0042] Specifically, the second connecting shaft 73 is used to connect the second guiding shaft 74 and the support member 70, and the second guiding shaft 74 is used to set the second guiding hole for the test piece 1 to pass through, enabling the second guiding member 71 to support and guide the test piece 1; along the vertical direction, the height of the second guiding hole is the same as the height of the traction shaft 40, which can avoid the test piece 1 being lifted by the second guiding member 71 and resulting in the test piece 1 being subjected to the force from the second guiding member 71, thereby avoiding the sudden change of the tension of the test piece 1 and affecting the quality of the test piece 1.

[0043] In this embodiment, the test device further includes a display screen 81 and a controller. The controller is arranged in the installation main body 50, and the display screen 81 is arranged on the installation main body 50. Both the first detection member 10 and the second detection member 20 are communicatively connected to the controller, and the controller is communicatively connected to the display screen 81, so that the display screen 81 can display the detection results of the first detection member 10 and the second detection member 20.

[0044] Specifically, the display screen 81 is used to display the detection results of the first detection member 10 and the second detection member 20, facilitating the user to directly read the real-time tension and length of the test piece 1.

[0045] Specifically, the testing device further includes three control buttons, a counter, and a main switch. The control buttons are arranged on the installation main body 50 and are used to manipulate the clearing and reading storage of the display screen 81. The main switch is used to control the opening and closing of the driving member 41, and further control the length of the test piece 1 wound through the third roller 53.

[0046] Specifically, both the second detection member 20 and the controller are communicatively connected to the counter. The second detection member 20 is an infrared sensor. A detection end is provided on the second detection member 20, and an induction member 531 is provided on the third roller 53. When the third roller 53 is in the initial position, the detection end faces the induction member 531. When the third roller 53 rotates one circle, the detection end faces the induction member 531 again. At this time, the second detection member 20 transmits a signal to the counter, the counter performs a count, and the counter feeds back the counting result to the controller, and the controller calculates the length of the test piece 1 wound through the third roller 53.

[0047] In this embodiment, the first detection member 10 includes a control part 82 and a sensing part connected to each other. The sensing part is arranged inside the third roller 53, and the control part 82 is communicatively connected to the controller, so that when the test piece 1 is wound through the third roller 53, the sensing part detects the tension of the test piece 1 and feeds back the detection result to the controller through the control part 82.

[0048] Specifically, the sensing part is used to detect the tension of the test piece 1, and the control part is used to feed back the detection result to the controller, so as to facilitate the display screen 81 to display the real-time tension of the test piece 1.

[0049] Optionally, the first detection member 10 is a tension sensor.

[0050] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0051] The testing device of the present utility model includes a plurality of rollers, a first detection member 10, and a traction shaft 40. The traction shaft 40 rotates to traction the test piece 1 wound on each roller to move to be wound on the traction shaft 40 to complete the unwinding of the test piece 1. During this process, the second detection member 20 detects the tension of the test piece 1 wound on the roller, and the first detection member 10 is used to detect the number of rotations of the roller. Since the circumference of the roller is known, the first detection member 10 can detect the length of the test piece 1 wound through the roller. Therefore, the length of the test piece 1 wound through the roller can be accurately controlled, and further the real-time tensions of test pieces 1 with multiple lengths wound through the roller can be tested simultaneously, thus solving the problem that the tension testing device in the prior art is not convenient to complete the unwinding tension test of yarns with multiple lengths at one time.

[0052] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding interpretations of the spatial relative descriptions used herein will be made accordingly.

[0053] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present application.

[0054] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A testing device, characterized in that: include: A plurality of rollers and a first detection member (10), each of the rollers being provided with a test member (1) wound thereon, each of the rollers being rotatably arranged around an axis of the roller, at least one of the rollers being provided with a second detection member (20), the second detection member (20) being used to detect the tension of the test member (1) wound thereon, and the first detection member (10) being used to detect the number of rotations of the roller; A traction shaft (40) is rotatably arranged around its axis to pull the test piece (1) to pass through each of the rollers and then be wound around the traction shaft (40).

2. The testing device according to claim 1, characterized in that: The testing device further comprises a mounting body (50), four of the plurality of rollers are respectively a first roller (51), a second roller (52), a third roller (53) and a fourth roller (54), the axis of the first roller (51), the axis of the second roller (52), the axis of the third roller (53) and the axis of the fourth roller (54) all extend along a first preset direction, and along a second preset direction, the first roller (51), the second roller (52), the third roller (53) and the fourth roller (54) are sequentially arranged on the mounting body ( 50); along the vertical direction, the axial center height of the first roller (51), the axial center height of the second roller (52), the axial center height of the fourth roller (54) and the axial center height of the third roller (53) gradually increase, the third roller (53) is provided with the second detection member (20), the first detection member (10) is arranged on the mounting body (50) and is arranged toward the third roller (53) to detect the number of rotations of the third roller (53); wherein the first preset direction, the second preset direction and the vertical direction are arranged perpendicular to each other.

3. The testing device according to claim 2, characterized in that: One of the plurality of rollers is a fifth roller (55), and the testing device further comprises a connecting rod (56), the fifth roller (55) is movably arranged on the connecting rod (56), the connecting rod (56) is arranged on the mounting body (50), and the fifth roller (55) is arranged on a side of the first roller (51) away from the traction shaft (40), so that the to-be-tested object (1) is sequentially wound around the fifth roller (55), the first roller (51), the second roller (52), the third roller (53) and the fourth roller (54).

4. The testing device according to claim 2, characterized in that: A limiting ring (57) is also provided on the mounting body (50). The limiting ring (57) is provided on a side of the fourth roller (54) close to the traction shaft (40). The axial direction of the limiting ring (57) is parallel to the second preset direction, so that the limiting ring (57) limits the position of the test piece (1) passing through the limiting ring (57).

5. The testing device according to claim 4, characterized in that: The test device further comprises a first guide member (60). Along the second preset direction, the first guide member (60) is arranged between the mounting body (50) and the traction shaft (40). The first guide member (60) comprises a support frame (61) and a guide net (62). The guide net (62) is arranged on the support frame (61). A first guide hole (63) is arranged on the guide net (62), so that the to-be-tested member (1) wound around the limiting ring (57) passes through the first guide hole (63) and then is wound around the traction shaft (40). In the vertical direction, the height of the first guide hole (63) is the same as the height of the limiting ring (57).

6. The testing device according to claim 5, characterized in that: The testing device further comprises a driving member (41), wherein a driving shaft of the driving member (41) is drivingly connected to the traction shaft (40) so as to drive the traction shaft (40) to rotate.

7. The testing device according to claim 6, characterized in that: The testing device further comprises a supporting member (70) and a second guiding member (71), wherein the second guiding member (71) is provided with a second guiding hole. Along the second preset direction, the second guiding member (71) and the driving member (41) are respectively arranged on both sides of the supporting member (70), so that the tested member (1) is sequentially passed through the first guiding hole (63) and the second guiding hole and then wound around the traction shaft (40).

8. The testing device according to claim 7, characterized in that: The second guide member (71) comprises a second connecting shaft (73) and a second guide shaft (74), wherein the second connecting shaft (73) extends in a vertical direction, and the second guide shaft (74) extends in the first preset direction, and the two ends of the second connecting shaft (73) are respectively connected to the support member (70) and one end of the second guide shaft (74), and the other end of the second guide shaft (74) is provided with the second guide hole, and along the vertical direction, the height of the second guide hole is the same as the height of the traction shaft (40).

9. The testing device according to claim 2, characterized in that: The testing device further comprises a display screen (81) and a controller, wherein the controller is arranged in the installation body (50), and the display screen (81) is arranged on the installation body (50), the first detection member (10) and the second detection member (20) are both communicatively connected to the controller, and the controller and the display screen (81) are communicatively connected so that the display screen (81) displays the detection result of the first detection member (10) and the detection result of the second detection member (20).

10. The testing device according to claim 9, characterized in that: The first detection member (10) comprises a control unit (82) and a sensor unit which are connected to each other. The sensor unit is arranged inside the third roller (53). The control unit (82) is communicatively connected to the controller so that when the test piece (1) is wound around and passes through the third roller (53), the sensor unit detects the tension of the test piece (1) and feeds back the detection result to the controller through the control unit (82).

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