Tension testing device

Abstract

The utility model discloses a tension testing device which comprises a body, a testing wheel and fixing wheels located on the two sides of the testing wheel are arranged on the body, the testing wheel and the fixing wheels each comprise a wheel body, the outer circumferential face of each wheel body comprises a first circumferential face and a second circumferential face which are connected, and the first circumferential face and the second circumferential face jointly form a containing groove. The groove wall face of the containing groove is used for laying tows, the first section serves as the section, angles between the straight line where the first circumferential face is located and the axial direction of the wheel body and between the straight line where the second circumferential face is located and the axial direction of the wheel body are different, and the first section is a plane parallel to the axial direction of the wheel body. Each fixed wheel has an initial posture, and in the initial posture, the axes of the fixed wheels and the test wheel are parallel to the reference surface; and each fixed wheel is connected with an angle adjusting device, and the angle adjusting device is used for adjusting the angle between the axial direction of the fixed wheel connected with the angle adjusting device and the reference surface. Therefore, not only can the accuracy of the detection result be improved, but also the product quality can be improved.

Description

Technical Field

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

[0002] In the fiber production process, a tension test device is usually required to detect the tension of the fiber bundle. However, when the tension test device in the related art tests the tension of the fiber bundle, it will cause entanglement between the bundles, which will not only reduce the accuracy of the test results, but also reduce the quality of subsequent products. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a tension testing device.

[0004] The present application provides a tension testing device, which includes a main body, on which a test wheel and fixed wheels located on both sides of the test wheel are arranged, the test wheel and each of the fixed wheels include a wheel body, the outer peripheral surface of the wheel body includes a first peripheral surface and a second peripheral surface connected to each other, the first peripheral surface and the second peripheral surface together constitute a receiving groove, the groove wall surface of the receiving groove is used for laying a wire bundle, and with a first cross-section as a cross-section, the straight line where the first peripheral surface is located and the straight line where the second peripheral surface is located are different from the axial direction of the wheel body, and the first cross-section is a plane parallel to the axial direction of the wheel body; each of the fixed wheels has an initial posture, in which the axes of the fixed wheel and the test wheel are parallel to a reference plane; each of the fixed wheels is connected to an angle adjustment device, and the angle adjustment device is used to adjust the angle between the axial direction of the fixed wheel connected thereto and the reference plane.

[0005] In some embodiments of the present application, the two fixed wheels are disposed on both sides of the test wheel through a first fixing portion, and each of the angle adjustment devices is respectively disposed between each of the fixed wheels and the first fixing portion.

[0006] In some embodiments of the present application, the first fixing portion includes: a first fixing rod, a first end of the first fixing rod is arranged on a first side surface of the main body; a support rod, the support rod is vertically connected to the second end of the first fixing rod so that the two ends of the support rod are respectively located on both sides of the first fixing rod, the two fixed wheels are respectively arranged at the two ends of the support rod, and each of the angle adjustment devices is respectively arranged between each of the fixed wheels and the support rod; wherein the two fixed wheels and the test wheel are both located on the same side of the support rod, and the groove wall surface of one of the two fixed wheels and the test wheel can be tangent to the same straight line, and the groove wall surface of the other of the two fixed wheels and the test wheel can be tangent to the same straight line.

[0007] In some embodiments of the present application, the angle adjustment device includes: a second fixing portion, which is fixed on the support rod; an adjustment portion, which is movably arranged on the second fixing portion, and the fixed wheel is fixed to the adjustment portion, and the adjustment portion is used to drive the fixed wheel to move so as to adjust the angle between the axial direction of the fixed wheel and the reference plane.

[0008] In some embodiments of the present application, an adjustment groove is provided on the surface of the second fixing portion facing the fixing wheel, and the adjustment portion includes: an adjustment rod, a first end of the adjustment rod extends into the adjustment groove, a second end of the adjustment rod is fixed to the fixing wheel, and the adjustment rod can drive the fixing wheel to slide along the adjustment groove; and a first locking portion, the first locking portion is used to lock the adjustment rod on the adjustment groove.

[0009] In some embodiments of the present application, a distance adjustment portion is further provided between at least one of the fixing wheels and the first fixing portion, and the distance adjustment portion is used to adjust the distance between the two fixing wheels.

[0010] In some embodiments of the present application, the support rod includes a first rod segment, a second rod segment and a third rod segment; the first end of the first rod segment is slidably connected to the first end of the second rod segment, the first end of the third rod segment is slidably connected to the second end of the second rod segment, and the first rod segment and the third rod segment respectively constitute two distance adjustment parts; the two fixed wheels are respectively arranged at the second end of the first rod segment and the second end of the third rod segment.

[0011] In some embodiments of the present application, taking the first cross-section as the cross-section, the angle between the straight line where the first circumferential surface is located and the straight line where the second circumferential surface is located is 40° to 50°; the wheel body includes a first end face connected to the first circumferential surface, a second end face connected to the second circumferential surface, and a third circumferential surface connecting the first circumferential surface and the second circumferential surface, the diameter of the first end face is 13cm to 17cm, the diameter of the second end face is 15cm to 20cm, and the diameter of the first end face is different from the diameter of the second end face, and the diameter of the third circumferential surface is 8cm to 10cm; the vertical distance between the first end face and the second end face is 14cm to 19cm, and the vertical distance between the first end face and the third circumferential surface is 4cm to 6cm.

[0012] In some embodiments of the present application, the tension testing device also includes: a height adjustment device, which is arranged on the main body, and the height adjustment device is used to adjust the distance between the fixed wheel and the main body; and / or, a bracket, which is arranged on the first side of the main body, and the bracket is used to entangle the broken wire bundle.

[0013] In some embodiments of the present application, the height adjustment device includes: a connecting rod assembly, which is arranged in the main body, and the first end of the connecting rod assembly is used to drive the fixed wheel to move; an adjustment handle, which is arranged on the outside of the main body and is rotatably connected to the second section of the connecting rod assembly, and the adjustment handle is used to drive the connecting rod assembly to move so as to adjust the distance between the test wheel and the main body or between the fixed wheel and the main body.

[0014] The tension testing device provided in this application can achieve the following beneficial technical effects:

[0015] The tension testing device provided by the present application, the test wheel and each fixed wheel all include a wheel body, the outer circumference of the wheel body includes a first circumference and a second circumference, and the angles between the straight line where the first circumference and the straight line where the second circumference are located and the axial direction of the wheel body are different in a cross section with a plane parallel to the axial direction of the wheel body. In this way, while expanding the laying area of ​​the fiber bundles on the outer circumference of the wheel body so that the fiber bundles can be laid flat on the groove wall surface of the accommodating groove of the detection wheel, the different angles between the straight line where the first circumference and the straight line where the second circumference are located and the axial direction of the wheel body can also avoid entanglement between the fiber bundles, thereby not only improving the accuracy of the test results, but also avoiding the ductility of subsequent products affected by the entanglement between the fiber bundles, which is beneficial to improving product quality.

[0016] In addition, each fixed wheel has an initial posture. In the initial posture, the axes of the fixed wheel and the test wheel are parallel to the reference plane. Each fixed wheel is connected to an angle adjustment device, and the angle between the axial direction of the fixed wheel connected thereto and the reference plane is adjusted by the angle adjustment device. In this way, the angle between the axial direction of the fixed wheel and the reference plane can be adjusted according to the size of the fiber bundle, so as to prevent the fiber bundle from falling off from the groove wall surface of the receiving groove of the testing wheel, so that the fiber bundle can always be laid flat on the groove wall surface of the receiving groove of the testing wheel, thereby further improving the accuracy of the test results.

[0017] Other characteristic features and advantages of the present application will become apparent from the following description of exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings incorporated into the specification and constituting a part of the specification illustrate embodiments of the present application and are used together with the description to explain the principles of the present application. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present application, rather than all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1is a front view of a tension testing device according to an exemplary embodiment;

[0020] Figure 2 is a side view of a tension testing device according to an exemplary embodiment;

[0021] Figure 3 is a schematic diagram showing the matching relationship between a test wheel, a fixed wheel and a fiber tow according to an exemplary embodiment;

[0022] Figure 4 is a schematic structural diagram of a wheel body according to an exemplary embodiment;

[0023] Figure 5 is a schematic diagram showing the matching relationship between the angle adjustment device and the fixed wheel according to an exemplary embodiment;

[0024] Figure 6 is a schematic structural diagram showing a fixed wheel in an initial posture according to an exemplary embodiment;

[0025] Figure 7 is a schematic structural diagram of a fixed wheel tilted upward according to an exemplary embodiment;

[0026] Figure 8 is a schematic structural diagram of a fixed wheel tilted downward according to an exemplary embodiment;

[0027] Fig. 9 is a front view of a tension testing device according to another exemplary embodiment;

[0028] Fig.10 is a side view of a tension testing device according to another exemplary embodiment.

[0029] Reference numerals:

[0030] 1. Tension testing device; 101. Display screen; 11. Main body; 12. Test wheel; 13. Fixed wheel; 131. First fixed wheel; 132. Second fixed wheel; 14. First fixed part; 141. First fixed rod; 142. Support rod; 1421. First rod segment; 1422. Second rod segment; 1433. Third rod segment; 15. Second fixed rod; 16. Height adjustment device; 161. First connecting rod; 162. Second connecting rod; 163. Adjustment handle; 17. Angle adjustment device; 171. Second fixed part; 172. Limiting slide groove; 173. Adjustment rod; 174. First locking part; 18. Wheel body; 181. First peripheral surface; 182. Second peripheral surface; 183. Third peripheral surface; 184. First end surface; 185. Second end surface; 19. Bracket; 2. Fiber bundle; 3. Reference surface. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0032] In the fiber production process, a tension test device is usually required to detect the tension of the fiber bundle. However, when the tension test device in the related art tests the tension of the fiber bundle, it will cause entanglement between the bundles, which will not only reduce the accuracy of the test results, but also reduce the quality of subsequent products.

[0033] Exemplarily, the tension testing device in the related art includes a test wheel and fixed wheels arranged on both sides of the test wheel, and the outer circumference of the test wheel and each fixed wheel is provided with a receiving groove, and the receiving groove is usually a symmetrical V-groove or a concave groove.

[0034] When a concave groove is used as the accommodating groove, the area that can be laid on the concave groove is smaller, and the fiber bundles can only be laid on the bottom of the concave groove. Therefore, when detecting the tension of large-tow fibers, the limitation of the laying area will cause overlapping and entanglement between the bundles at the bottom of the concave groove, which will not only cause the large-tow fibers to fail to fully contact the detection wheel, resulting in low accuracy of the detection results, but also be detrimental to the ductility of subsequent products, thereby reducing product quality.

[0035] When the accommodating groove is a V-shaped groove, although it can expand the area where the fiber bundle can be laid to a certain extent, when detecting the tension of large-tow fibers, the fiber bundles are prone to gather at the bottom of the V-shaped groove and become entangled, which will also cause the fiber bundles to fail to fully contact the detection wheel, resulting in low accuracy of the detection results of the tension testing device, and is not conducive to the ductility of subsequent products, resulting in reduced product quality.

[0036] In order to solve the above problems, the present application provides a tension testing device, wherein the test wheel and each fixed wheel include a wheel body, and the outer circumferential surface of the wheel body includes a first circumferential surface and a second circumferential surface that are connected. By making the angles between the straight line where the first circumferential surface and the straight line where the second circumferential surface are located and the axial direction of the wheel body different in a cross section with a plane parallel to the axial direction of the wheel body, the laying area of ​​the fiber bundle on the outer circumferential surface of the wheel body is expanded so that the fiber bundle can be laid flat on the groove wall surface of the accommodating groove of the detection wheel. At the same time, the different angles between the straight line where the first circumferential surface and the straight line where the second circumferential surface are located and the axial direction of the wheel body can avoid entanglement between the fiber bundles, thereby not only improving the accuracy of the test results, but also avoiding the ductility of subsequent products affected by the entanglement between the fiber bundles, which is beneficial to improving product quality.

[0037] In addition, each fixed wheel has an initial posture. In the initial posture, the axes of the fixed wheel and the test wheel are parallel to the reference plane. Each fixed wheel is connected to an angle adjustment device, and the angle between the axial direction of the fixed wheel connected thereto and the reference plane is adjusted by the angle adjustment device. In this way, the angle between the axial direction of the fixed wheel and the reference plane can be adjusted according to the size of the fiber bundle, so as to prevent the fiber bundle from falling off from the groove wall surface of the receiving groove of the testing wheel, so that the fiber bundle can always be laid flat on the groove wall surface of the receiving groove of the testing wheel, thereby further improving the accuracy of the test results.

[0038] The tension testing device provided according to the present application is described in detail below in conjunction with the accompanying drawings.

[0039] An exemplary embodiment of the present application provides a tension testing device, such as Figure 1 and Figure 2 As shown, the tension testing device 1 includes a main body 11, on which a test wheel 12 and fixed wheels 13 located on both sides of the test wheel 12 are arranged. The material of the test wheel 12 and each fixed wheel 13 can be one of ceramic, aluminum alloy and stainless steel. Exemplarily, only one fixed wheel 13 can be arranged on both sides of the test wheel 12, or multiple fixed wheels can be arranged. The fiber bundle 2 is laid on one side of the test wheel 12, and the fiber bundle 2 is pressed against the test wheel 12 by the fixed wheels 13 on both sides. For example, when the fiber bundle 2 is tangent to the top of the test wheel 12, the bottom of each fixed wheel 13 is tangent to the fiber bundle 2, so that the tension of the fiber bundle 2 can be detected by the test wheel 12.

[0040] After being pressed by the fixed wheels 13 on both sides, the fiber bundle 2 will be deflected at a preset angle along the extension direction of the fiber bundle 2 when passing through the test wheel 12, so that the fiber bundle 2 can be tightened, which is conducive to improving the accuracy of the tension test of the fiber bundle 2. For example, as shown in Figure 3, a first fixed wheel 131 and a second fixed wheel 132 are respectively arranged on both sides of the test wheel 12. After being pressed by the first fixed wheel 131, a first deflection angle α is generated between the fiber bundle 2 and the test wheel 12. After being pressed by the second fixed wheel 132, a second deflection angle β is generated between the fiber bundle 2 and the test wheel 12. The first deflection angle α and the second deflection angle β can be, for example, 60° to 80°.

[0041] Combination Figure 1 and Figure 4 As shown, the test wheel 12 and each fixed wheel 13 include a wheel body 18, and the outer peripheral surface of the wheel body 18 includes a first peripheral surface 181 and a second peripheral surface 182 connected to each other, and the first peripheral surface 181 and the second peripheral surface 182 together constitute a receiving groove, and the groove wall of the receiving groove is used to lay the fiber bundle. In this way, the first peripheral surface 181 and the second peripheral surface 182 together constitute a V-shaped groove, which effectively expands the area of ​​the receiving groove that can lay the fiber bundle 2, and then the tension test device 1, whether testing small-bundle fibers or large-bundle fibers, can lay the fiber bundle 2 on the groove wall of the receiving groove of the test wheel, thereby realizing the detection of fiber bundles 2 of different diameters, and improving the adaptability of the tension test device 1. It should be noted that large-bundle fibers and small-bundle fibers refer to fiber bundles 2 with different bundle diameters (i.e., widths). For example, the diameter of a bundle of large-bundle fibers is 5 mm, and the diameter of a bundle of small-bundle fibers is 3 mm.

[0042] In order to avoid entanglement between the fiber bundles 2 laid on the wall surface of the accommodating groove, in this embodiment, taking the first section as the section, the angles between the straight line where the first circumferential surface 181 and the straight line where the second circumferential surface 182 are located and the axial direction of the wheel body 18 are different. Exemplarily, the first circumferential surface 181 and the second circumferential surface 182 together form an asymmetric V-shaped groove, and taking the first section as the section, the angle between the straight line where the first circumferential surface 181 is located and the axial direction of the wheel body 18 can be greater than the angle between the straight line where the second circumferential surface 182 is located and the axial direction of the wheel body 18, for example, the angle between the straight line where the first circumferential surface 181 is located and the axial direction of the wheel body 18 is 80°, and the angle between the straight line where the second circumferential surface 182 is located and the axial direction of the wheel body 18 is 60°; or, the angle between the straight line where the first circumferential surface 181 is located and the axial direction of the wheel body 18 can be less than the angle between the straight line where the second circumferential surface 182 is located and the axial direction of the wheel body 18, for example, the angle between the straight line where the first circumferential surface 181 is located and the axial direction of the wheel body 18 is 60°, and the angle between the straight line where the second circumferential surface 182 is located and the axial direction of the wheel body 18 is 70°, which is not specifically limited here. It should be noted that the first section is a plane parallel to the axial direction of the wheel body 18.

[0043] By adopting such a setting method, with the first cross section as the cross section, the inclination angle of the straight line where the first circumferential surface 181 is located can be different from the inclination angle of the straight line where the second circumferential surface 182 is located. In this way, it can effectively prevent the fiber bundles 2 laid on the groove wall from sliding down to the bottom of the receiving groove and concentrating thereon, resulting in entanglement between the fiber bundles 2. This can not only further improve the accuracy of the detection results, but also prevent the entanglement between the fiber bundles 2 from affecting the ductility of subsequent products, thereby facilitating the improvement of product quality.

[0044] like Figure 1 and Figure 6 As shown, each fixed wheel 13 has an initial posture, and in the initial posture, the axes of the fixed wheel 13 and the test wheel 12 are parallel to the reference plane 3. Exemplarily, the reference plane 3 can be, for example, a horizontal plane, or a surface on the body 11. For example, the fixed wheel 13 and the test wheel 12 are both arranged on the top surface of the body 11, and the top surface is a plane, and then the top surface of the body 11 can be used as the reference plane 3.

[0045] like Figure 1 and Figure 5As shown, each fixed wheel 13 is connected to an angle adjustment device 17, and the angle adjustment device 17 is used to adjust the angle between the axial direction of the fixed wheel 13 connected thereto and the reference plane 3. In this way, the angle between the axial direction of the fixed wheel 13 and the reference plane 3 can be adjusted according to the size of the fiber bundle 2 to prevent the fiber bundle 2 from falling off from the groove wall surface of the receiving groove of the detection wheel, so that the fiber bundle 2 can always be laid flat on the groove wall surface of the receiving groove of the detection wheel, thereby not only improving the test stability of the tension test device 1, but also further improving the accuracy of the test result. Exemplarily, when the diameter of the fiber bundle 2 is large, the area on which it is laid on the detection wheel is also large, and then the angle between the axial direction of the fixed wheel 13 and the reference plane 3 can be adjusted to stop the fiber bundle 2 from one side of the fiber bundle 2, so as to prevent the fiber bundle 2 from falling off from the groove wall surface of the receiving groove of the detection wheel. When the diameter of the fiber bundle 2 is small, the fiber bundle 2 will not be at risk of falling off, and the fixed wheel 13 can be in the initial posture at this time, and it does not need to be adjusted.

[0046] like Figure 1 As shown, in one embodiment, two fixed wheels 13 are arranged on both sides of the test wheel 12 through a first fixed portion 14. The first fixed portion 14 can be, for example, a bracket, a rod-shaped structure, or other structure that can support the fixed wheels 13. Such a design can not only support the fixed wheels 13, but also ensure the smoothness of the rotation of the fixed wheels 13, thereby improving the reliability of the tension test device 1. Fig.10 As shown, each angle adjustment device 17 is respectively arranged between each fixing wheel 13 and the first fixing portion 14. Such an arrangement is adopted to facilitate the arrangement of the angle adjustment device 17.

[0047] like Figure 1 and 9 As shown, in one embodiment, the first fixing portion 14 includes a first fixing rod 141 and a support rod 142. The first end of the first fixing rod 141 is disposed on the first side surface of the body 11, and the first side surface may be, for example, the top surface of the body 11. The support rod 142 is vertically connected to the second end of the first fixing rod 141, so that the two ends of the support rod 142 are respectively located on both sides of the first fixing rod 141, the two fixing wheels 13 are respectively disposed at the two ends of the support rod 142, and the angle adjustment devices 17 are respectively disposed between the fixing wheels 13 and the support rod 142. With such a design, the structure of the first fixing portion 14 is simple and easy to process.

[0048] like Figure 1 , Figure 2 and Figure 3As shown, the two fixed wheels 13 and the test wheel 12 are both located on the same side of the support rod 142, and the groove wall of one of the two fixed wheels 13 and the test wheel 12 can be tangent to the same straight line, and the groove wall of the other of the two fixed wheels 13 and the test wheel 12 can be tangent to another straight line at the same time, so that the fiber bundle 2 can be laid on the groove wall of the accommodating groove on the test wheel 12 and the two fixed wheels 13 at the same time, and the fiber bundle 2 will be deflected along the extension direction of the fiber bundle 2 when passing through the test wheel 12 after being pressed by the fixed wheels 13 on both sides. In this way, the fiber bundle 2 can be in a taut state, which is beneficial to improve the accuracy of the tension test of the fiber bundle 2.

[0049] like Figure 1 As shown, in one embodiment, the tension testing device 1 further includes a second fixing rod 15, one end of which is disposed on the first side surface of the body 11, and the test wheel 12 is disposed on the other end of the second fixing rod 15. By providing the second fixing rod 15, the test wheel 12 can be supported while ensuring the smoothness of the rotation of the test wheel 12, thereby improving the reliability of the tension testing device 1.

[0050] like Figure 1 and Figure 5 As shown, in one embodiment, the angle adjustment device 17 includes a second fixing portion 171 and an adjustment portion. The second fixing portion 171 is fixed to the support rod 142. The adjustment portion is movably disposed on the second fixing portion 171, for example, rotatably disposed on the second fixing portion 171, or slidably disposed on the second fixing portion 171. The fixed wheel 13 is fixed to the adjustment portion, and the adjustment portion is used to drive the fixed wheel 13 to move so as to adjust the angle between the axial direction of the fixed wheel 13 and the reference plane 3. Such a setting form is adopted, which is not only convenient for fixing the angle adjustment, but also convenient for adjusting the fixed wheel 13.

[0051] like Figure 5 As shown, in one embodiment, an adjustment groove is provided on the surface of the second fixing portion 171 facing the fixing wheel 13 . It is understandable that the adjustment groove is recessed inward from the surface of the second fixing portion 171 facing the fixing wheel 13 .

[0052] The adjusting part includes an adjusting rod 173 and a first locking part 174. The first end of the adjusting rod 173 extends into the adjusting groove, and the second end of the adjusting rod 173 is fixed to the fixed wheel 13. The adjusting rod 173 can drive the fixed wheel 13 to slide along the adjusting groove. It should be noted that the adjusting part only adjusts the angle between the axial direction of the fixed wheel 13 connected thereto and the reference plane 3 to avoid the movement of the position of the fixed wheel 13 affecting the normal detection of the tension of the fiber bundle 2 by the tension detection device. Exemplarily, in the process of the adjusting rod 173 driving the fixed wheel 13 to slide along the adjusting groove, the position of the first end of the adjusting rod 173 remains stationary, so that the second end of the adjusting rod 173 moves in the circumferential direction around the first end of the adjusting rod 173. When the adjustment is completed, the adjusting rod 173 is locked on the adjusting groove by the first locking part 174 to realize the locking of the fixed wheel 13 at the current position, to avoid the displacement or falling of the fixed wheel 13, thereby further ensuring the normal detection of the tension of the fiber bundle 2 by the tension detection device.

[0053] like Figure 5 As shown, in one embodiment, along the axial direction perpendicular to the fixed wheel 13, the adjustment groove includes a first groove side wall and a second groove side wall opposite to each other, and a limiting slide groove 172 penetrating the first groove side wall is provided on the first groove side wall. The first locking portion 174 includes a first screw and a first nut, the first end of the first screw is connected to the adjustment rod 173, the second end of the first screw extends out of the adjustment groove through the limiting slide groove 172, the first nut is screwed to the second end of the first screw, and the unlocking and locking positioning of the adjustment rod 173 is achieved by loosening or tightening the first nut. With such a setting form, the structure of the first locking portion 174 is simple, and it is easy to process and use. Exemplarily, the extension direction of the limiting slide groove 172 is in the shape of an arc to adapt to the rotation angle of the adjustment rod 173. Along the extension direction of the limiting slide groove 172, the two ends of the limiting slide groove 172 play a limiting role, that is, they can limit the rotation angle of the adjustment rod 173, for example, from the initial posture (such as Figure 6 As shown in FIG. 1 ), the limiting slide groove 172 can limit the adjustment rod 173 to be able to rotate 45° upward along the limiting slide groove 172, so that the axial direction of the fixed wheel 13 can be tilted upward to 45° (as shown in FIG. 1 ). Figure 7 ); or from the initial posture (as shown in Figure 6 As shown in FIG. 1 ), the limiting slide groove 172 can limit the adjustment rod 173 to be able to rotate 45° downward along the limiting slide groove 172, so that the axial direction of the fixed wheel 13 can be tilted downward to 45° (as shown in FIG. 1 ). Figure 8 The specific settings can be made according to actual needs.

[0054] like Fig. 9As shown, in one embodiment, a distance adjustment portion is further provided between at least one fixed wheel 13 and the first fixed portion 14. For example, a fixed wheel 13 is provided on each side of the test wheel 12. The distance adjustment portion may be provided at only one fixed wheel 13, or at each of the two fixed wheels 13. The distance between the two fixed wheels 13 can be adjusted by the distance adjustment portion. In this way, the distance between the two fixed wheels 13 can be adjusted according to the size of the fiber bundle 2. For example, when the fiber bundle 2 is large, that is, the diameter of the fiber bundle 2 is large, or the laying width is wide, the distance between the two fixed wheels 13 is increased by the distance adjustment portion. By adopting such a setting, the deflection angle of the fiber bundle 2 can be adaptively adjusted according to the size of the fiber bundle 2, thereby avoiding continuous deflection of large fiber bundles within a short distance, and reducing radial bending of the fiber bundle 2 while testing the tension of the fiber bundle 2, thereby reducing the loss of mechanical properties of the fiber bundle 2 and the risk of entanglement of the fiber bundle 2 caused by excessive friction, thereby achieving the detection of the tension of the fiber bundle 2 and ensuring the quality of subsequent products.

[0055] Continue to refer Fig. 9 In one embodiment, the support rod 142 includes a first rod segment 1421, a second rod segment 1422 and a third rod segment 1433. The first end of the first rod segment 1421 is slidably connected to the first end of the second rod segment 1422, and the first end of the third rod segment 1433 is slidably connected to the second end of the second rod segment 1422. The first rod segment 1421 and the third rod segment 1433 respectively constitute two distance adjustment parts. The two fixed wheels 13 are respectively arranged at the second end of the first rod segment 1421 and the second end of the third rod segment 1433. Exemplarily, the second rod segment 1422 is a sleeve structure, and the first rod segment 1421 and the third rod segment 1433 can be respectively inserted into the second rod segment 1422 from both ends of the second rod segment 1422, and can slide in the sleeve structure. With such a setting form, the structure of the distance adjustment part is simple, and it is easy to process and use.

[0056] In one embodiment, the tension testing device 1 also includes at least one second locking portion, each second locking portion is respectively connected to each distance adjusting portion, and the distance adjusting portion is locked to the first fixing portion 14 through the second locking portion to achieve locking of the fixed wheel 13 at the current position, thereby preventing the fixed wheel 13 from shifting or falling, thereby further ensuring that the tension detection device can detect the tension of the fiber bundle 2 normally.

[0057] In one embodiment, a second locking portion is respectively provided between the first rod segment 1421 and the second rod segment 1422 and between the second rod segment 1422 and the third rod segment 1433. The second rod segment 1422 is a sleeve structure. The second locking portion between the first rod segment 1421 and the second rod segment 1422 includes a plurality of first tooth grooves provided on the inner side wall of the sleeve structure and a first clamping block provided on the first rod segment 1421. When the first clamping block is clamped in one of the plurality of first tooth grooves, the first rod segment 1421 is locked. The second locking portion between the second rod segment 1422 and the third rod segment 1433 includes a plurality of second tooth grooves provided on the inner side wall of the sleeve structure and a second clamping block provided in the third rod segment 1433. When the second clamping block is clamped in one of the plurality of second tooth grooves, the third rod segment 1433 is locked. With such a setting form, the structure of the second locking portion is simple and easy to process.

[0058] In another embodiment, a second locking portion is provided between the first rod segment 1421 and the second rod segment 1422 and between the second rod segment 1422 and the third rod segment 1433. The second rod segment 1422 is a sleeve structure, and sliding grooves are provided on the second rod segment 1422 along the sliding direction of the first rod segment 1421 and the second rod segment 1422.

[0059] The second locking portion between the first rod segment 1421 and the second rod segment 1422 includes a second screw and a second nut, wherein the first end of the second screw is connected to the first rod segment 1421, the second end of the second screw extends from the sleeve structure through a slide groove, and the second nut is threadedly connected to the second end of the second screw. The first rod segment 1421 can be unlocked or locked by loosening or tightening the second nut.

[0060] The second locking part between the second rod segment 1422 and the third rod segment 1433 includes a third screw and a third nut. The first end of the third screw is connected to the third rod segment 1433, the second end of the third screw extends from the sleeve structure through a slide groove, and the third nut is screwed to the second end of the third screw. The third rod segment 1433 can be unlocked and locked by loosening or tightening the third nut. With such a setting form, the structure of the second locking part is simple and easy to process.

[0061] like Figure 4As shown, in one embodiment, with the first section as the section, the angle γ between the straight line where the first circumferential surface 181 is located and the straight line where the second circumferential surface 182 is located is 40° to 50°. The wheel body 18 includes a first end surface 184 connected to the first circumferential surface 181, a second end surface 185 connected to the second circumferential surface 182, and a third circumferential surface 183 connecting the first circumferential surface 181 and the second circumferential surface 182. The diameter φ1 of the first end surface 184 is 13cm to 17cm, the diameter φ2 of the second end surface 185 is 15cm to 20cm, and the diameter of the first end surface 184 is different from the diameter of the second end surface 185. The diameter φ3 of the third circumferential surface 183 is 8cm to 10cm. The vertical distance L1 between the first end surface 184 and the second end surface 185 is 14cm to 19cm, and the vertical distance L2 between the first end surface 184 and the third circumferential surface 183 is 4cm to 6cm. Such a design can effectively prevent the fiber bundles 2 laid on the groove wall from sliding down to the bottom of the receiving groove and concentrating thereon, thereby causing entanglement between the fiber bundles 2. This can not only further improve the accuracy of the detection results, but also prevent the ductility of subsequent products from being affected by the entanglement between the fiber bundles 2, thereby facilitating the improvement of product quality.

[0062] like Figure 5 and Fig.10 As shown, in one embodiment, when the inclination angle of the straight line where the first circumferential surface 181 is located is different from the inclination angle of the straight line where the second circumferential surface 182 is located, the diameters of the two end faces of each wheel body 18 are also different, and then when each wheel body 18 is installed, the end with a larger diameter is made to face outward. Exemplarily, the diameter of the first end face 184 of the wheel body 18 of the fixed wheel 13 is smaller than the diameter of the second end face 185 of the wheel body 18 of the fixed wheel 13, so that the first end face 184 of the wheel body 18 of the fixed wheel 13 faces the first fixing portion 14. The diameter of the first end face 184 of the wheel body 18 of the test wheel 12 is smaller than the diameter of the second end face 185 of the wheel body 18 of the test wheel 12, so that the first end face 184 of the wheel body 18 of the test wheel 12 faces the second fixing rod 15. With such a setting form, the possibility of the fiber bundle 2 slipping off the wheel body 18 can be effectively reduced.

[0063] like Figure 1As shown, in one embodiment, the tension testing device 1 also includes a height adjustment device 16, which is arranged on the body 11, and the height adjustment device 16 is used to adjust the distance between the fixed wheel 13 and the body 11. In this way, it is convenient to lay the fiber bundle 2 flat on the groove wall surface of each accommodating groove. Exemplarily, when it is necessary to test the tension of the fiber bundle 2, the distance between the fixed wheel 13 and the body 11 is increased by the height adjustment device 16 to increase the distance between the fixed wheel 13 and the test wheel 12 perpendicular to the reference plane, so that the fiber bundle 2 is laid flat on the groove wall surface of the accommodating groove on the test wheel 12, and then the distance between the fixed wheel 13 and the body 11 is reduced by the height adjustment device 16, so that the fixed wheel 13 presses the fiber bundle 2, and at this time, the fiber bundle 2 is also laid flat on the groove wall surface of the accommodating groove on the fixed wheel 13, thereby realizing the detection of the tension of the fiber bundle 2.

[0064] like Fig.10 As shown, in one embodiment, the height adjustment device 16 includes a connecting rod assembly and an adjustment handle 163, the connecting rod assembly is arranged in the body 11, and the first end of the connecting rod assembly is used to drive the fixed wheel 13 to move. The adjustment handle 163 is arranged outside the body 11 and is rotatably connected to the second section of the connecting rod assembly, and the adjustment handle 163 is used to drive the connecting rod assembly to move so as to adjust the distance between the fixed wheel 13 and the body 11. Exemplarily, a cavity is arranged in the body 11, and the body 11 also includes a second side surface connected to the first side surface, and an opening connected to the cavity is arranged on the second side surface. The first side surface can be, for example, the top surface of the body 11, and the second side surface can be, for example, the front surface of the body 11. It can be understood that the front surface refers to the side surface of the body 11 facing the tester during the test. The connecting rod assembly is arranged in the cavity, and the connecting rod assembly includes a first connecting rod 161 and a second connecting rod 162. The first end of the first connecting rod 161 is rotatably connected to the second end of the second connecting rod 162 through a first rotating shaft, and the second end of the first connecting rod 161 is connected to the first end of the first fixed rod 141. The second end of the second connecting rod 162 is fixedly connected to the adjustment handle 163 via a second rotating shaft, and both ends of the second rotating shaft are rotatably connected to two opposite side walls of the opening.

[0065] Such a configuration makes the height adjustment device 16 simple in structure and easy to manufacture.

[0066] Since the fiber bundle 2 is running at high speed during the tension test of the fiber bundle 2, the fiber bundle 2 may be entangled and crossed with the wheel bodies 18, thereby causing the fiber bundle 2 to break. In order to avoid injury to the tester due to broken wires, Figure 1As shown, in one embodiment, the tension testing device 1 also includes a bracket 19, and the bracket 19 is arranged on the first side of the main body 11. In this way, when the fiber bundle 2 is broken under high-speed operation, the bracket 19 will play an obstructive role, and then the broken bundle will be entangled on the bracket 19, thereby effectively avoiding harm to the tester and improving the safety of the test.

[0067] like Figure 1 and Figure 2 As shown, in one embodiment, the first side of the body 11 includes a first edge and a second edge opposite to each other, and the first fixing rod 141 is arranged on the first side near the first edge. The bracket 19 includes a first connecting rod, a second connecting rod and a third connecting rod, the first end of the first connecting rod and the first end of the second connecting rod are respectively vertically connected to the two ends of the third connecting rod, and the second end of the first connecting rod and the second end of the second connecting rod are both fixed on the first side of the body 11 near the second edge. The first connecting rod and the second connecting rod each include a connected first section, a second section and a third section, the first section is inclined from the first side toward the first fixing portion 14 so that the second section is close to the first fixing portion 14, the second section is parallel to the first fixing rod 141, and the third section is perpendicular to the second section and extends in a direction away from the first fixing portion 14. And in the test state, in the direction perpendicular to the reference plane 3, the height between the third connecting rod and the test wheel 12 is 1 cm to 2 cm. With such a setting form, the blocking effect of the bracket 19 can be improved, and damage to the tester can be avoided, thereby further improving the safety of the test.

[0068] like Figure 1 As shown, in one embodiment, the tension testing device 1 further includes a display screen 101 and a control system, and the control system is configured to transmit the pressure value detected by the pressure sensor on the test wheel 12 to the display screen 101, and the display screen 101 is used to display the pressure value detected by the pressure sensor. In this way, it is convenient for the tester to observe and grasp the detected tension.

[0069] In one embodiment, the steps of using the tension testing device 1 to test the fiber bundle 2 are as follows:

[0070] The height of the fixed wheel 13 is raised by the height adjustment device 16 so that the fiber tow 2 to be tested is laid flat on the wall surface of the accommodating groove on the testing wheel 12 .

[0071] The fixed wheel 13 is slowly lowered so that the groove wall surface of the accommodating groove on the fixed wheel 13 presses the fiber bundle 2 tightly.

[0072] The handheld tension testing device 1 is moved back and forth along the extension direction of the fiber bundle 2 to observe whether the movement is smooth. If not, repeat the above steps.

[0073] Read the tension reading on display screen 101 .

[0074] The fixed wheel 13 is lifted by the height adjustment device 16, the fiber tow 2 is moved out, and the fiber tow 2 is naturally lowered, and the test is finished.

[0075] Example 1

[0076] The width of the fiber bundle 2 to be tested is 6 mm. Taking the first section as the section, the angle between the straight line where the first circumferential surface 181 is located and the straight line where the second circumferential surface 182 is located is 40°. The diameter of the first end surface 184 of each wheel body 18 is 14 mm, the diameter of the second end surface 185 is 16 mm, the diameter of the third circumferential surface 183 is 9 mm, the vertical distance between the first end surface 184 and the second end surface 185 is 15 mm, and the vertical distance between the first end surface 184 and the third circumferential surface 183 is 5 mm. The angle between the axial direction of the fixed wheel 13 and the reference plane 3 is 45° upward. The distance between the two fixed wheels 13 is 18 cm. The material of the test wheel 12 and each fixed wheel 13 is ceramic. The height between the third connecting rod of the bracket 19 and the test wheel 12 is 1 cm. The first deflection angle α and the second deflection angle β are both 75°.

[0077] Example 2

[0078] The width of the fiber bundle 2 to be tested is 12 mm. Taking the first section as the section, the angle between the straight line where the first circumferential surface 181 is located and the straight line where the second circumferential surface 182 is located is 45°. The diameter of the first end surface 184 of each wheel body 18 is 15 mm, the diameter of the second end surface 185 is 18 mm, the diameter of the third circumferential surface 183 is 8 mm, the vertical distance between the first end surface 184 and the second end surface 185 is 16 mm, and the vertical distance between the first end surface 184 and the third circumferential surface 183 is 5 mm. The angle between the axial direction of the fixed wheel 13 and the reference plane 3 is 30° downward. The distance between the two fixed wheels 13 is 18 cm. The material of the test wheel 12 and each fixed wheel 13 is aluminum alloy. The height between the third connecting rod of the bracket 19 and the test wheel 12 is 1 cm. The first deflection angle α and the second deflection angle β are both 75°.

[0079] Example 3

[0080] The width of the fiber bundle 2 to be tested is 20 mm. Taking the first section as the section, the angle between the straight line where the first circumferential surface 181 is located and the straight line where the second circumferential surface 182 is located is 50°. The diameter of the first end surface 184 of each wheel body 18 is 16 mm, the diameter of the second end surface 185 is 20 mm, the diameter of the third circumferential surface 183 is 10 mm, the vertical distance between the first end surface 184 and the second end surface 185 is 18 mm, and the vertical distance between the first end surface 184 and the third circumferential surface 183 is 5 mm. The angle between the axial direction of the fixed wheel 13 and the reference plane 3 is 10° upward. The distance between the two fixed wheels 13 is 30 cm. The material of the test wheel 12 and each fixed wheel 13 is stainless steel. The height between the third connecting rod of the bracket 19 and the test wheel 12 is 2 cm. The first deflection angle α and the second deflection angle β are both 80°.

[0081] Comparative Example 1

[0082] The width of the fiber bundle 2 to be tested is 20 mm. Taking the first section as the section, the angle between the straight line where the first circumferential surface 181 is located and the straight line where the second circumferential surface 182 is located is 30°. The diameter of the first end surface 184 of each wheel body 18 is 10 mm, the diameter of the second end surface 185 is 10 mm, the diameter of the third circumferential surface 183 is 5 mm, the vertical distance between the first end surface 184 and the second end surface 185 is 13 mm, and the vertical distance between the first end surface 184 and the third circumferential surface 183 is 4 mm. The angle between the axial direction of the fixed wheel 13 and the reference plane 3 is 0° upward. The distance between the two fixed wheels 13 is 10 cm. The material of the test wheel 12 and each fixed wheel 13 is stainless steel. The height between the third connecting rod of the bracket 19 and the test wheel 12 is 2 cm. The first deflection angle α and the second deflection angle β are both 80°.

[0083] Comparative Example 2

[0084] The width of the fiber bundle 2 to be tested is 20 mm. Taking the first section as the section, the angle between the straight line where the first circumferential surface 181 is located and the straight line where the second circumferential surface 182 is located is 50°. The diameter of the first end surface 184 of each wheel body 18 is 11 mm, the diameter of the second end surface 185 is 15 mm, the diameter of the third circumferential surface 183 is 10 mm, the vertical distance between the first end surface 184 and the second end surface 185 is 14 mm, and the vertical distance between the first end surface 184 and the third circumferential surface 183 is 6 mm. The angle between the axial direction of the fixed wheel 13 and the reference plane 3 is 0° upward. The distance between the two fixed wheels 13 is 12 cm. The material of the test wheel 12 and each fixed wheel 13 is ceramic. The height between the third connecting rod of the bracket 19 and the test wheel 12 is 1 cm. The first deflection angle α and the second deflection angle β are both 60°.

[0085] The relevant test results of each embodiment and each comparative example are shown in Table 1.

[0086] Table 1: Relevant test results of each embodiment and each comparative example

[0087]

[0088] The contents described above may be implemented individually or in combination in various ways, and these variations are all within the protection scope of this application.

[0089] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tension testing device, characterized in that: The tension testing device comprises a body, on which a test wheel and fixed wheels located on both sides of the test wheel are arranged, the test wheel and each of the fixed wheels comprise a wheel body, the outer peripheral surface of the wheel body comprises a first peripheral surface and a second peripheral surface connected to each other, the first peripheral surface and the second peripheral surface together constitute a receiving groove, the groove wall surface of the receiving groove is used for laying the wire bundle, and with a first cross section as a cross section, the angles between the straight line where the first peripheral surface is located and the straight line where the second peripheral surface is located and the axial direction of the wheel body are different, and the first cross section is a plane parallel to the axial direction of the wheel body; Each of the fixed wheels has an initial posture, in which the axes of the fixed wheel and the test wheel are parallel to a reference plane; Each of the fixed wheels is connected to an angle adjustment device, and the angle adjustment device is used to adjust the angle between the axial direction of the fixed wheel connected thereto and the reference plane.

2. The tension testing device according to claim 1, characterized in that: The two fixed wheels are arranged on both sides of the test wheel through a first fixing part, and each of the angle adjustment devices is respectively arranged between each of the fixed wheels and the first fixing part.

3. The tension testing device according to claim 2, characterized in that: The first fixing portion comprises: a first fixing rod, wherein a first end of the first fixing rod is disposed on a first side surface of the body; A support rod, the support rod is vertically connected to the second end of the first fixing rod, so that the two ends of the support rod are respectively located on both sides of the first fixing rod, the two fixing wheels are respectively arranged at the two ends of the support rod, and each of the angle adjustment devices is respectively arranged between each of the fixing wheels and the support rod; The two fixed wheels and the test wheel are both located on the same side of the support rod, and the groove wall surface of one of the two fixed wheels and the test wheel can be tangent to the same straight line, and the groove wall surface of the other of the two fixed wheels and the test wheel can be tangent to the same straight line.

4. The tension testing device according to claim 3, characterized in that: The angle adjustment device comprises: a second fixing portion, the second fixing portion being fixed on the support rod; The adjusting part is movably arranged on the second fixing part, the fixing wheel is fixed on the adjusting part, and the adjusting part is used to drive the fixing wheel to move so as to adjust the angle between the axial direction of the fixing wheel and the reference plane.

5. The tension testing device according to claim 4, characterized in that: The surface of the second fixing portion facing the fixing wheel is provided with an adjustment groove, and the adjustment portion comprises: An adjusting rod, wherein a first end of the adjusting rod extends into the adjusting slot, a second end of the adjusting rod is fixed to the fixing wheel, and the adjusting rod can drive the fixing wheel to slide along the adjusting slot; A first locking portion, wherein the first locking portion is used to lock the adjusting rod on the adjusting slot.

6. The tension testing device according to claim 3, characterized in that: A distance adjusting portion is further provided between at least one of the fixing wheels and the first fixing portion, and the distance adjusting portion is used to adjust the distance between the two fixing wheels.

7. The tension testing device according to claim 6, characterized in that: The support rod comprises a first rod segment, a second rod segment and a third rod segment; The first end of the first rod segment is slidably connected to the first end of the second rod segment, the first end of the third rod segment is slidably connected to the second end of the second rod segment, and the first rod segment and the third rod segment respectively constitute two distance adjustment parts; The two fixing wheels are respectively arranged at the second end of the first rod segment and the second end of the third rod segment.

8. The tension testing device according to claim 1, characterized in that: Taking the first cross section as the cross section, the angle between the straight line where the first peripheral surface is located and the straight line where the second peripheral surface is located is 40° to 50°; The wheel body includes a first end surface connected to the first circumferential surface, a second end surface connected to the second circumferential surface, and a third circumferential surface connecting the first circumferential surface and the second circumferential surface, the diameter of the first end surface is 13 cm to 17 cm, the diameter of the second end surface is 15 cm to 20 cm, and the diameter of the first end surface is different from the diameter of the second end surface, and the diameter of the third circumferential surface is 8 cm to 10 cm; A vertical distance between the first end surface and the second end surface is 14 cm to 19 cm, and a vertical distance between the first end surface and the third circumferential surface is 4 cm to 6 cm.

9. The tension testing device according to any one of claims 1 to 8, characterized in that: The tension testing device also includes: a height adjustment device, the height adjustment device being arranged on the body, the height adjustment device being used to adjust the distance between the fixing wheel and the body; and / or, A support is arranged on the first side of the body, and the support is used to entangle the broken filament bundle.

10. The tension testing device according to claim 9, characterized in that: The height adjustment device comprises: A connecting rod assembly, wherein the connecting rod assembly is disposed in the body, and a first end of the connecting rod assembly is used to drive the fixed wheel to move; An adjusting handle is arranged outside the body and is rotationally connected to the second section of the connecting rod assembly. The adjusting handle is used to drive the connecting rod assembly to move so as to adjust the distance between the test wheel and the body or between the fixed wheel and the body.

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