An optical fiber fixing device for optical fiber tensile strength test

Abstract

The utility model relates to a kind of optical fiber fixing device for optical fiber tensile strength test, belong to optical fiber strength performance detection technical field, including two shaft cylinder fixed plate, the leftmost side and the rightmost side of two shaft cylinder fixed plate surface lower side are all set up for the positioning screw thread hole of connection, and shaft cylinder fixed plate surface is located between two positioning screw thread hole and set up two plum handle bolt threaded connection hole for connection, the inner wall of two plum handle bolt threaded connection hole is all equipped with plum handle bolt for fixed, the front of two shaft cylinder fixed plate is all equipped with conveying assembly for conveying, the utility model can realize the free switching of 90mm winding shaft cylinder and diameter 200mm winding shaft cylinder, when 180 μm G.657 optical fiber is stretched after novel coating size is reduced, coating performance is optimized, diameter 200mm winding shaft cylinder can be matched, while ordinary optical fiber test can still be matched with 90mm winding shaft cylinder, simple and efficient, save optical fiber cost.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber strength performance testing technology, specifically an optical fiber fixing device for testing the tensile strength of optical fibers. Background Technology

[0002] With the continuous development of fiber optic technology, the application scenarios of fiber optics are becoming more refined and demanding. To adapt to the exponential growth of data center traffic, high bandwidth has received widespread attention. One direction is to increase the core density of optical cables, that is, to reduce the diameter of the optical fibers inside the cable. Reducing the fiber diameter can also increase the core density, making the optical cable thinner and allowing more optical fibers to be laid in a limited tube. Reducing the fiber diameter can be achieved by reducing the coating thickness. For example, the coating size of the standard 125μm glass diameter G.657 optical fiber has been reduced from the original 245μm to 200μm or even 180μm. The fiber coating has a significant impact on the key performance of glass optical fibers, such as strength and microbending sensitivity. As the coating size decreases, the coating material used with glass optical fibers is also being continuously optimized to ensure the stability of these key performances.

[0003] In optical fiber strength performance testing, the tensile strength test requires fixing the optical fiber to two cylindrical winding cylinders at both ends of the tensile machine and stretching the optical fiber at a fixed speed until the fiber between the two cylinders breaks. However, reducing the coating size and optimizing the coating are not conducive to fixing the optical fiber on the cylinders, which may cause the optical fiber on the cylinder to break before the fiber between the cylinders, resulting in abnormal test data. For the new 180μm G.657 optical fiber with reduced coating size and optimized coating performance, how to accurately and conveniently test its tensile strength has become an unavoidable problem.

[0004] Traditional optical fiber strength performance testing methods may encounter the following problems;

[0005] (1) When using a 50-100 mm diameter winding cylinder with a new type of 180 μm G.657 optical fiber with reduced coating size and optimized coating performance, a large number of breakages occur on the winding cylinder. This results in wasted optical fiber, low efficiency, and increased cost.

[0006] (2) Because the optical fiber is wound around the cylinder several times, it may slip or the optical fiber may come off the cylinder, which further reduces the testing efficiency.

[0007] (3) Further increasing the diameter of the shaft cylinder can suppress abnormal fractures, but switching between shaft cylinders also causes trouble for operators. Utility Model Content

[0008] To achieve the above objectives, this utility model provides the following technical solution: an optical fiber fixing device for testing the tensile strength of optical fibers, comprising two shaft cylinder fixing plates. The leftmost and rightmost sides of the lower surface of the two shaft cylinder fixing plates are provided with positioning screw thread holes for connection. The surface of the shaft cylinder fixing plate between the two positioning screw thread holes is provided with two sprite handle bolt thread connection holes for connection. The inner walls of the two sprite handle bolt thread connection holes are provided with sprite handle bolts for fixing. The front of the two shaft cylinder fixing plates is provided with a conveying assembly for conveying.

[0009] Furthermore, the conveying assembly includes a winding cylinder A, which includes a positioning screw hole A, a plum blossom handle bolt threaded hole A, a fiber optic end fixing clip A, and a fiber optic end fixing clip threaded hole A for fixing.

[0010] The positioning screw's optical hole A can be directly inserted into the positioning screw's threaded hole A, which has a smooth top. The plum blossom handle bolt's threaded hole A can be used to tighten the plum blossom handle bolt, which is used to fix the winding shaft A to the shaft fixing plate. The fiber optic end fixing clip's threaded hole A is used to fix the fiber optic end fixing clip A to the winding shaft A.

[0011] Furthermore, the conveying assembly includes a winding cylinder B, which includes a positioning screw hole B, a plum blossom handle bolt threaded hole B, a fiber optic end fixing clip B, a fiber optic end fixing clip threaded hole B, and several round holes.

[0012] Furthermore, the threaded connection holes of the two plum blossom handle bolts are wider at the top and narrower at the bottom, and the threaded sleeves of the two plum blossom handle bolts that match them are also wider at the top and narrower at the bottom, so that they can be used in a matching manner.

[0013] Furthermore, the diameter of the winding cylinder A is set to 90mm, while the diameter of the winding cylinder B is set to 200mm.

[0014] Furthermore, the diameter of several of the circular holes is set to 50 mm, and the several circular holes are evenly distributed on the surface of the winding cylinder B.

[0015] Furthermore, both the fiber optic end fixing clip B and the fiber optic end fixing clip A have openings at their tops. These openings are used to fix the fiber optic end fixing clip B and the fiber optic end fixing clip A to the shaft cylinder structure. The vertical structure in the middle section is close to the surface of the shaft cylinder structure and is used to clamp the end of the test fiber. Its tail end has an arc-shaped design.

[0016] Furthermore, both the surface of the winding cylinder B and the winding cylinder A are wrapped with electrical tape.

[0017] Compared with the prior art, the present invention provides an optical fiber fixing device for testing the tensile strength of optical fibers, which has the following advantages:

[0018] 1. When stretching 180μm G.657 optical fibers with reduced coating size and optimized coating performance, this device greatly reduces the occurrence of optical fiber breakage on the shaft due to coating characteristics by using a 200mm diameter winding cylinder, thus saving optical fiber and reducing costs.

[0019] The device, through the design of the shaft fixing plate, positioning screws, and Torx handle bolts, allows for free switching between 90mm and 200mm diameter winding shafts. When stretching new 180μm G.657 optical fibers with reduced coating size and optimized coating performance, the 200mm diameter winding shaft can be used. For ordinary optical fiber testing, the 90mm winding shaft can still be used. It is simple, efficient, and saves on optical fiber costs.

[0020] The device prevents the optical fiber under test from slipping by wrapping electrical tape of sufficient width for testing on both a 90mm diameter winding cylinder and a 200mm diameter winding cylinder. It also provides a certain buffering effect, preventing the optical fiber from directly contacting the cylinder and causing coating damage. This further reduces the occurrence of optical fiber tensile breakage on the cylinder and improves testing efficiency. Attached Figure Description

[0021] Fig. 1 This is a front view of the conveying component in Embodiment 1 of this utility model;

[0022] Fig. 2 This is a vertical sectional view of the winding shaft cylinder A of this utility model;

[0023] Fig. 3 This is a front view of the conveying component in Embodiment 2 of this utility model;

[0024] Fig. 4 This is a vertical sectional view of the winding shaft cylinder B of this utility model;

[0025] Fig. 5 This is a front view of the shaft cylinder fixing plate and the plum blossom handle bolt of this utility model;

[0026] Fig. 6 This is a perspective view of the shaft cylinder fixing plate of this utility model;

[0027] Fig. 7 This is a vertical sectional view of the optical fiber end fixing clip A of this utility model.

[0028] In the diagram: 1. Shaft fixing plate; 101. Threaded connection hole for the plum blossom handle bolt; 102. Threaded hole for the positioning screw; 103. Plum blossom handle bolt; 2. Winding shaft A; 201. Optical hole A; 202. Threaded hole A for the plum blossom handle bolt; 203. Threaded hole A for fixing the fiber optic end clamp; 3. Winding shaft B3; 301. Optical hole B301; 302. Threaded hole B for the plum blossom handle bolt; 303. Threaded hole B for fixing the fiber optic end clamp; 304. Round hole 304; 4. Fixing the fiber optic end clamp A; 401. Opening; 5. Conveying assembly; 6. Fixing the fiber optic end clamp B. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Please see Figs. 1 to 7 This embodiment of an optical fiber fixing device for testing the tensile strength of optical fibers includes two shaft cylinder fixing plates 1. The leftmost and rightmost sides of the lower surface of the two shaft cylinder fixing plates 1 are provided with positioning screw thread holes 102 for connection. The surface of the shaft cylinder fixing plate 1 is provided with two sprite handle bolt thread connection holes 101 for connection between the two positioning screw thread holes 102. The inner wall of the two sprite handle bolt thread connection holes 101 is provided with sprite handle bolts 103 for fixing. The front of the two shaft cylinder fixing plates 1 is provided with a conveying assembly 5 for conveying.

[0032] For the new 180μm G.657 optical fiber with reduced coating size and optimized coating performance, it can be paired with a winding cylinder A2. Through the design of the cylinder fixing plate 1, it is ensured that the center of the cylinder fixing plate 1 is aligned with the force sensor on the stretching equipment, and that the tangent points of the optical fiber to be stretched and the two winding cylinders A2 are on the same straight line, thereby achieving the detection effect. The entire device is installed at both ends of the horizontal stretching machine with two screws to fix the device on the stretching equipment to ensure the normal use of the device. The fixing method and technology of the device are existing mature technologies, and no creative work has been done on them, so they are not described in detail. The conveying component 5 includes the winding cylinder A2, which includes the optical hole A201 of the positioning screw, the threaded hole A202 of the plum blossom handle bolt, the fixing clamp A4 for fixing the optical fiber end, and the threaded hole A203 for fixing the optical fiber end.

[0033] The positioning screw's optical hole A201 can be directly inserted into the positioning screw with a smooth top end installed on the positioning screw threaded hole A102. The plum blossom handle bolt threaded hole A202 can be used to tighten the plum blossom handle bolt 103 to fix the winding shaft cylinder A2 to the shaft cylinder fixing plate 1. The fiber optic end fixing clip's threaded hole A203 is used to fix the fiber optic end fixing clip A4 to the winding shaft cylinder A2.

[0034] Example 2

[0035] Please see Figs. 1 to 7 In this embodiment, an optical fiber fixing device for testing the tensile strength of optical fibers includes two shaft cylinder fixing plates 1. The leftmost and rightmost sides of the lower surface of the two shaft cylinder fixing plates 1 are provided with positioning screw thread holes 102 for connection. The surface of the shaft cylinder fixing plate 1 is provided with two sprite handle bolt thread connection holes 101 for connection between the two positioning screw thread holes 102. The inner wall of the two sprite handle bolt thread connection holes 101 is provided with sprite handle bolts 103 for fixing. The front of the two shaft cylinder fixing plates 1 is provided with a conveying assembly 5 for conveying.

[0036] For the new 180μm G.657 optical fiber with reduced coating size and optimized coating performance, a winding cylinder B3 can be used. Through the design of the cylinder fixing plate 1, the center of the cylinder fixing plate 1 is ensured to be aligned with the force sensor on the stretching equipment, and the tangent points of the optical fiber to be stretched and the two winding cylinders B3 are on the same straight line, thereby achieving the detection effect. The entire device is installed at both ends of the horizontal stretching machine with two screws to fix the device to the stretching equipment to ensure the normal use of the device. The fixing method and technology of the device are existing mature technologies, and no creative work has been done on them, so they are not described in detail. The conveying component 5 includes the winding cylinder B3, which includes the optical hole B301 of the positioning screw, the threaded hole B302 of the plum blossom handle bolt, the fixing clamp B6 for fixing the optical fiber end, the threaded hole B303 for fixing the optical fiber end, and several round holes 304. The internal structure of the winding cylinder B3 is installed in a similar manner to that of the winding cylinder A2.

[0037] Example 3

[0038] Please see Figs. 1 to 7 In this embodiment, an optical fiber fixing device for testing the tensile strength of optical fibers has two plum blossom handle bolt threaded connection holes 101 with a wider upper part and a narrower lower part. The threaded sleeves of the two plum blossom handle bolts 103 that are matched with them are also set with a wider upper part and a narrower lower part, so that they can be used in combination. The diameter of the winding cylinder A2 is set to 90mm, while the diameter of the winding cylinder B3 is set to 200mm. Several round holes 304 are set to 50mm in diameter, and the several round holes 304 are evenly distributed on the surface of the winding cylinder B3.

[0039] Both the fiber optic end clamp B6 and the fiber optic end clamp A4 have openings 401 at their tops. The openings 401 are used to fix the fiber optic end clamps B6 and A4 to the shaft cylinder structure. The vertical structure in the middle section is close to the surface of the shaft cylinder structure and is used to clamp the end of the test fiber. Its tail end is designed with an arc shape. The arc shape can facilitate the insertion and removal of the end during the fiber tensile test. The surfaces of the winding shaft cylinders B3 and A2 are wrapped with electrical tape. The electrical tape on the shaft cylinder structure is wrapped with sufficient thickness, at least three centimeters, to prevent the fiber under test from slipping and to provide a certain buffering effect, preventing the fiber from directly contacting the shaft cylinder and causing coating damage.

[0040] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

Claims

1. An optical fiber fixing device for testing the tensile strength of optical fibers, comprising two shaft cylinder fixing plates (1), characterized in that: The leftmost and rightmost sides of the lower surface of the two shaft cylinder fixing plates (1) are provided with positioning screw thread holes (102) for connection, and the surface of the shaft cylinder fixing plate (1) between the two positioning screw thread holes (102) is provided with two plum blossom handle bolt thread connection holes (101) for connection. The inner walls of the two plum blossom handle bolt thread connection holes (101) are provided with plum blossom handle bolts (103) for fixing. The front of the two shaft cylinder fixing plates (1) is provided with a conveying assembly (5) for conveying.

2. The optical fiber fixing device for testing the tensile strength of optical fibers according to claim 1, characterized in that: The conveying assembly (5) includes a winding cylinder A (2), which includes a positioning screw hole A (201), a plum blossom handle bolt thread hole A (202), a fiber optic end fixing clip A (4), and a fiber optic end fixing clip thread hole A (203). The positioning screw's optical hole A (201) can be directly inserted into the positioning screw's threaded hole (102) and the top of the positioning screw is rounded. The plum blossom handle bolt threaded hole A (202) can be used to tighten the plum blossom handle bolt (103) and fix the winding shaft cylinder A (2) on the shaft cylinder fixing plate (1). The fiber end fixing clamp fixing threaded hole A (203) is used to fix the fiber end fixing clamp A (4) on the winding shaft cylinder A (2).

3. The optical fiber fixing device for testing the tensile strength of optical fibers according to claim 2, characterized in that: The conveying assembly (5) includes a winding cylinder B (3), which includes a positioning screw hole B (301), a plum blossom handle bolt threaded hole B (302), a fiber optic end fixing clip B (6), a fiber optic end fixing clip threaded hole B (303), and several round holes (304).

4. The optical fiber fixing device for testing the tensile strength of optical fibers according to claim 3, characterized in that: The two threaded connection holes (101) of the two plum blossom handle bolts are wider at the top and narrower at the bottom, and the threaded sleeves of the two plum blossom handle bolts (103) that match them are also wider at the top and narrower at the bottom, so that they can be used together.

5. The optical fiber fixing device for testing the tensile strength of optical fibers according to claim 3, characterized in that: The diameter of the winding cylinder A (2) is set to 90 mm, while the diameter of the winding cylinder B (3) is set to 200 mm.

6. The optical fiber fixing device for testing the tensile strength of optical fibers according to claim 3, characterized in that: The diameter of several of the circular holes (304) is 50 mm, and the several circular holes (304) are evenly distributed on the surface of the winding cylinder B (3).

7. The optical fiber fixing device for testing the tensile strength of optical fibers according to claim 3, characterized in that: The fixed fiber end clamp B (6) and the fixed fiber end clamp A (4) are both provided with an opening (401) at the top. The opening (401) is used to fix the fixed fiber end clamp B (6) and the fixed fiber end clamp A (4) to the shaft cylinder structure. The vertical section is close to the surface of the shaft cylinder structure and is used to clamp the end of the test optical fiber. Its tail end has an arc-shaped design.

8. The optical fiber fixing device for testing the tensile strength of optical fibers according to claim 3, characterized in that: The surfaces of both the winding cylinder B (3) and the winding cylinder A (2) are wrapped with electrical tape.

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