Variable self-adaptive force mechanism for presser foot of polarization maintaining optical fiber fusion splicer

Abstract

The utility model discloses a variable adaptive force mechanism for a polarization maintaining fiber fusion splicer presser foot, comprising a presser foot assembly and a clamping groove assembly, the bottom of the presser foot assembly is provided with the clamping groove assembly, the presser foot assembly is provided with a mounting rack, the top of the mounting rack is screwed with a top plate, and the middle part of the top plate is inserted with a transmission column. A pressing base is fixedly arranged at the bottom of the transmission column, the bottom of the pressing base covers an optical fiber body, the optical fiber body is inserted into the clamping groove assembly in a penetrating mode, and an adjusting groove is formed in the clamping groove assembly. According to the mechanism, in the process that the pressing seat moves downwards to be clamped to the optical fiber body, if the situation that the position of the optical fiber is slightly deviated or uneven is encountered, the stress spring can adapt to the situation through compression or extension of the stress spring, overlarge impact force on the optical fiber body is avoided, and the optical fiber is prevented from being damaged; and meanwhile, elastic forces with different magnitudes can be provided by different stress spring rigidities and compression amounts, so that the pressing seat can apply proper pressure according to actual conditions.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber fusion splicers, specifically a variable adaptive force mechanism for the pressure foot of a polarization-maintaining optical fiber fusion splicer. Background Technology

[0002] The working principle of a fiber optic fusion splicer is as follows: Press the power switch to turn on the fusion splicer and wait for the equipment to complete its self-test; open the fusion splicer's windproof cover and fiber clamps, place the two cut fibers into their respective clamps, ensuring the fiber end faces are aligned with the fusion splicer's electrodes, and then gently close the clamps and windproof cover; according to the fiber type and specifications, set the corresponding fusion parameters on the fusion splicer's operating interface, such as discharge time, discharge intensity, and advance amount; generally, common single-mode and multimode fibers have default parameters, but in actual operation, fine-tuning may be necessary based on fiber quality and fusion effect; after setting the parameters, press the fusion splicer's... Press the "Fusion Splice" button to begin the fusion splicing process on the two optical fibers. During the splicing process, observe the fiber alignment and splicing process displayed on the fusion splicer's screen. If misalignment or splicing abnormalities are found, stop the splicing immediately and re-inspect and adjust the fibers. After the splicing is complete, the fusion splicer's screen will display parameters such as splice loss. You can also judge the splice quality by observing the appearance of the splice area. Generally, the splice area should be smooth, free of bubbles and cracks, and the connection between the two optical fibers should be tight. If the splice loss is too high or the appearance is unsatisfactory, analyze the cause, such as uneven fiber end faces or incomplete fiber cleaning, and re-sponsor the fiber.

[0003] When splicing two optical fibers using a fiber optic fusion splicer, a clamping groove is provided below the clamping foot when the fiber is held in place. The fiber passes between the clamping foot and the clamping groove. The clamping foot presses down to hold the fiber in place. The height of the clamping groove is fixed. Different types and specifications of optical fibers have different diameters. If the clamping groove cannot be raised or lowered, it is difficult to accurately adjust optical fibers of different diameters to the appropriate height, making it difficult for the fiber to be in the center of the field of view of the optical system and the center of the electrode arc. This causes the fusion splicer to malfunction and increases splicing loss. Utility Model Content

[0004] The purpose of this invention is to provide a variable adaptive force mechanism for the pressure foot of a polarization-maintaining fiber fusion splicer, so as to solve the defects mentioned in the background art.

[0005] To achieve the above objectives, a variable adaptive force mechanism for the pressure foot of a polarization-maintaining fiber fusion splicer is provided, comprising a pressure foot assembly and a clamping groove assembly. The clamping groove assembly is installed at the bottom of the pressure foot assembly, and a mounting bracket is provided on the pressure foot assembly. A top plate is screwed onto the top of the mounting bracket, and a transmission column is inserted through the middle of the top plate. A pressure seat is fixedly provided at the bottom of the transmission column, and the bottom of the pressure seat covers the optical fiber body. The optical fiber body is inserted inside the clamping groove assembly. An adjustment groove is provided inside the clamping groove assembly, and the clamping groove body is movably installed inside the adjustment groove. Passive seats are fixedly provided at both ends of the clamping groove body, and the surface of the passive seats is covered by an active seat.

[0006] Preferably, the presser foot assembly includes a force-receiving ball, a transmission column, a force-receiving spring, a pressure seat, a limit seat, a mounting bracket, and a top plate, with the end of the transmission column away from the pressure seat passing through the top plate and being fixedly connected to the force-receiving ball.

[0007] Preferably, a limiting seat is sleeved on the transmission column, the end of the limiting seat is fixedly set on the inner wall of the mounting frame, and a force spring is provided at the bottom of the limiting seat. The force spring is sleeved on the outside of the transmission column, and the bottom of the force spring is set on the upper surface of the pressure seat.

[0008] Preferably, the bottom of the pressure seat is provided with an arc-shaped pressure groove, which covers the upper surface of the optical fiber body, and the mounting bracket and its top plate are combined to form an "L" shape.

[0009] Preferably, the clamping groove assembly includes a base, an adjustment groove, a clamping groove body, a passive seat, an active seat, a limiting rod, and an adjusting bolt; the base has a U-shaped cross-section, and a fixing piece with a slot is fixedly installed at the bottom of the base.

[0010] Preferably, the passive seat has two sets of limiting holes evenly distributed on it, and a limiting rod is inserted into the interior of each of the two sets of limiting holes. The limiting rod is fixed inside the adjusting groove, and the sizes of the passive seat and the active seat are compatible.

[0011] Preferably, both the passive seat and the active seat have right-angled trapezoidal cross-sections. The passive seat has a force-bearing inclined surface, and the active seat has a force-applying inclined surface at its end. The dimensions of the force-bearing inclined surface and the force-applying inclined surface are matched, and the force-applying inclined surface covers the force-bearing inclined surface. The back of the active seat is movably mounted with a stud on an adjusting bolt, and the force-bearing end of the adjusting bolt is set in a mounting hole opened on the side wall of the base.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In the process of the pressure seat moving downwards and clamping onto the optical fiber body, if there is a slight deviation or unevenness in the position of the optical fiber, the force spring can adapt by its own compression or extension, so as to avoid excessive impact on the optical fiber body and prevent damage to the optical fiber; at the same time, different force spring stiffness and compression amount can provide different amounts of elastic force, so that the pressure seat can apply appropriate pressure according to the actual situation.

[0014] 2. This utility model allows for adjustment of the height of the clamping groove assembly by means of an adjustable groove inside, thereby adjusting the welding height of the optical fiber bodies inserted inside. The height can be flexibly adjusted according to the actual position and state of the optical fiber bodies, ensuring precise alignment of the end faces of the two optical fiber bodies in both horizontal and vertical directions. This allows for better overlap of the fiber cores, effectively reducing welding loss, improving the transmission efficiency of optical signals, and enabling stable and efficient transmission of optical signals after the optical fiber bodies are welded. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A bottom view;

[0017] Figure 3 for Figure 1 Top view;

[0018] Figure 4 for Figure 1 Side view;

[0019] Figure 5 for Figure 1 Rear view.

[0020] The following are the labeling elements in the diagram: 1. Presser foot assembly; 11. Force ball; 12. Transmission column; 13. Force spring; 14. Presser seat; 15. Limit seat; 16. Mounting bracket; 17. Top plate; 2. Clamping slot assembly; 20. Base; 21. Adjustment slot; 22. Clamping slot body; 23. Passive seat; 24. Active seat; 25. Limit rod; 26. Adjusting bolt; 3. Optical fiber body. Detailed Implementation

[0021] Please see Figure 1-5This utility model provides a variable adaptive force mechanism for the pressure foot of a polarization-maintaining fiber optic fusion splicer, including a pressure foot assembly 1 and a clamping groove assembly 2. The clamping groove assembly 2 is installed at the bottom of the pressure foot assembly 1. A mounting bracket 16 is provided on the pressure foot assembly 1. A top plate 17 is screwed onto the top of the mounting bracket 16. A transmission column 12 is inserted through the middle of the top plate 17. A pressure seat 14 is fixedly provided at the bottom of the transmission column 12. The bottom of the pressure seat 14 is covered with an optical fiber body 3. The optical fiber body 3 is inserted inside the clamping groove assembly 2. An adjustment groove 21 is opened inside the clamping groove assembly 2. A clamping groove body 22 is movably installed inside the adjustment groove 21. Passive seats 23 are fixedly provided at both ends of the clamping groove body 22. An active seat 24 is covered on the surface of the passive seat 23.

[0022] Working principle: When two sets of optical fiber bodies 3 need to be welded and fixed, the two sets of optical fiber bodies 3 first need to be fixed and limited. The bottom of the optical fiber body 3 is inserted into the inside of the clamping groove assembly 2, and the surface of the optical fiber body 3 is clamped and fixed by the pressure foot assembly 1. When actually fixing the optical fiber body 3, the force ball 11 is first lifted upward, the pressure seat 14 moves upward, and the force spring 13 is compressed. Then, the optical fiber body 3 is snapped into the inside of the clamping groove body 22. At this time, the compressed force spring 13 returns to its original position, and the pressure seat 14 moves downward passively and snaps into the optical fiber body 3. The spring 13, when compressed, has the characteristic of storing elastic potential energy. When the external force is released, the spring 13 returns to its original shape, generating an elastic force. This elastic force pushes the pressure seat 14 downward, providing the initial power for the pressure seat 14 to contact the optical fiber body 3 and apply pressure. The elasticity of the spring 13 can act as a buffer. During the process of the pressure seat 14 moving downward and engaging with the optical fiber body 3, if there is a slight deviation or unevenness in the position of the optical fiber, the spring 13 can adapt through its own compression or extension, avoiding excessive impact on the optical fiber body 3 and preventing damage to the optical fiber. Simultaneously, Different stiffnesses and compressions of the springs 13 can provide different amounts of elastic force, allowing the pressure seat 14 to apply appropriate pressure according to actual conditions. The height of the adjusting groove 21 inside the clamping groove assembly 2 can be adjusted, thereby adjusting the splicing height of the optical fiber bodies 3 inserted inside. The height can be flexibly adjusted according to the actual position and state of the optical fiber bodies 3, ensuring that the end faces of the two optical fiber bodies 3 are precisely aligned in both horizontal and vertical directions, so that the fiber cores of the optical fiber bodies 3 overlap better, effectively reducing splicing loss, improving the transmission efficiency of optical signals, and ensuring that the optical signal after splicing of the optical fiber bodies 3 is more efficient. It can transmit stably and efficiently; it is compatible with different types of optical fiber bodies 3, and can adjust the height of optical fiber bodies 3 with different diameters and structures to put the optical fiber body 3 in the optimal welding position. Whether it is a conventional single-mode or multi-mode optical fiber body 3, or a special large-core diameter optical fiber body 3 or polarization-maintaining optical fiber body 3, it can achieve good welding, expand the application range of optical fiber body 3 welding machine, and reduce the need to change equipment or fixtures due to different types of optical fiber bodies 3; The specific adjustment method of the adjustment groove 21 is: to simultaneously tighten the adjustment bolts 26 located on both sides of the base 20 using an Allen wrench;The adjusting bolt 26 is screwed into the threaded channel inside the base 20. As the adjusting bolt 26 rotates, its depth within the threaded channel increases, pushing the driving seat 24 to move laterally. To ensure the stability of the driving seat 24 during operation, a guide post can be installed on the back of the driving seat 24. The guide post is inserted into a guide hole on the inner wall of the base 20. When the driving seat 24 moves laterally, its force-applying inclined surface applies force to the force-receiving inclined surface of the driven seat 23, causing the driven seat 23 to move upward. At this time, the clamping slot body 22 moves upward, and the driven seat 23 can compress the spring sleeved on the upper side of the limit rod 25. When the adjusting bolt 26 reverses, the driven seat 23, under the return action of the spring, returns to its original position, allowing the clamping slot body 22 to move downward, thus completing the height adjustment of the clamping slot body 22.

[0023] In a preferred embodiment, the presser foot assembly 1 includes a force-receiving ball 11, a transmission column 12, a force-receiving spring 13, a pressure seat 14, a limit seat 15, a mounting bracket 16, and a top plate 17. The end of the transmission column 12 away from the pressure seat 14 passes through the top plate 17 and is fixedly connected to the force-receiving ball 11.

[0024] In a preferred embodiment, a limiting seat 15 is sleeved on the transmission column 12. The end of the limiting seat 15 is fixedly set on the inner wall of the mounting bracket 16. A force spring 13 is provided at the bottom of the limiting seat 15. The force spring 13 is sleeved on the outside of the transmission column 12. The bottom of the force spring 13 is set on the upper surface of the pressure seat 14.

[0025] As a preferred embodiment, the bottom of the pressure base 14 is provided with an arc-shaped pressure groove, which covers the upper surface of the optical fiber body 3. The mounting bracket 16 and its top plate 17 are combined to form an "L" shape.

[0026] In a preferred embodiment, the clamping groove assembly 2 includes a base 20, an adjustment groove 21, a clamping groove body 22, a passive seat 23, an active seat 24, a limiting rod 25, and an adjusting bolt 26; the base 20 has a U-shaped cross section, and a fixing piece with a slot is fixedly provided at the bottom of the base 20.

[0027] As a preferred embodiment, the passive seat 23 is provided with two sets of limiting holes evenly distributed, and a limiting rod 25 is inserted into the interior of each of the two sets of limiting holes. The limiting rod 25 is fixed inside the adjusting groove 21, and the sizes of the passive seat 23 and the active seat 24 are compatible.

[0028] In a preferred embodiment, both the passive seat 23 and the active seat 24 have right-angled trapezoidal cross sections. The passive seat 23 has a force-bearing inclined surface, and the active seat 24 has a force-applying inclined surface at its end. The dimensions of the force-bearing inclined surface and the force-applying inclined surface are matched, and the force-applying inclined surface covers the force-bearing inclined surface. The back of the active seat 24 is movably mounted with a stud on an adjusting bolt 26, and the force-bearing end of the adjusting bolt 26 is set in a mounting hole on the side wall of the base 20.

Claims

1. A variable adaptive force mechanism for the pressure foot of a polarization-maintaining fiber fusion splicer, comprising a pressure foot assembly (1) and a clamping groove assembly (2), characterized in that: The bottom of the presser foot assembly (1) is equipped with a clamping groove assembly (2). The presser foot assembly (1) is provided with a mounting bracket (16). The top of the mounting bracket (16) is screwed with a top plate (17). A transmission column (12) is inserted through the middle of the top plate (17). A pressure seat (14) is fixedly provided at the bottom of the transmission column (12). The bottom of the pressure seat (14) is covered with an optical fiber body (3). The optical fiber body (3) is inserted inside the clamping groove assembly (2). An adjustment groove (21) is opened inside the clamping groove assembly (2). A clamping groove body (22) is movably installed inside the adjustment groove (21). A passive seat (23) is fixedly provided at both ends of the clamping groove body (22). The surface of the passive seat (23) is covered with an active seat (24).

2. The variable adaptive force mechanism for the pressure foot of a polarization-maintaining fiber optic fusion splicer according to claim 1, characterized in that: The presser foot assembly (1) includes a force-receiving ball (11), a transmission column (12), a force-receiving spring (13), a pressure seat (14), a limiting seat (15), a mounting bracket (16), and a top plate (17). The end of the transmission column (12) away from the pressure seat (14) passes through the top plate (17) and is fixedly connected to the force-receiving ball (11).

3. The variable adaptive force mechanism for the pressure foot of a polarization-maintaining fiber optic fusion splicer according to claim 2, characterized in that: A limiting seat (15) is sleeved on the transmission column (12). The end of the limiting seat (15) is fixedly set on the inner wall of the mounting frame (16). A force spring (13) is provided at the bottom of the limiting seat (15). The force spring (13) is sleeved on the outside of the transmission column (12). The bottom of the force spring (13) is set on the upper surface of the pressure seat (14).

4. The variable adaptive force mechanism for the pressure foot of a polarization-maintaining fiber optic fusion splicer according to claim 3, characterized in that: The bottom of the pressure seat (14) is provided with an arc-shaped pressure groove, which covers the upper surface of the optical fiber body (3). The mounting bracket (16) and its top plate (17) are combined to form an "L" shape.

5. The variable adaptive force mechanism for the pressure foot of a polarization-maintaining fiber optic fusion splicer according to claim 1, characterized in that: The clamping slot assembly (2) includes a base (20), an adjustment slot (21), a clamping slot body (22), a passive seat (23), an active seat (24), a limiting rod (25), and an adjustment bolt (26); the cross section of the base (20) is U-shaped, and a fixing piece with a slot is fixedly installed at the bottom of the base (20).

6. The variable adaptive force mechanism for the pressure foot of a polarization-maintaining fiber fusion splicer according to claim 5, characterized in that: The passive seat (23) is provided with two sets of limiting holes evenly spaced. Each set of limiting holes has a limiting rod (25) inserted inside. The limiting rod (25) is fixed inside the adjusting groove (21). The sizes of the passive seat (23) and the active seat (24) are compatible.

7. The variable adaptive force mechanism for the pressure foot of a polarization-maintaining fiber optic fusion splicer according to claim 6, characterized in that: The passive seat (23) and the active seat (24) are both set in right-angled trapezoidal cross sections. The passive seat (23) has a force-bearing inclined surface, and the active seat (24) has a force-applying inclined surface at its end. The dimensions of the force-bearing inclined surface and the force-applying inclined surface are matched, and the force-applying inclined surface covers the force-bearing inclined surface. The back of the active seat (24) is movably mounted with a stud on an adjusting bolt (26), and the force-bearing end of the adjusting bolt (26) is set in a mounting hole opened on the side wall of the base (20).

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