Optical fiber fusion splicer

Abstract

The invention provides an optical fiber fusion splicer, and particularly relates to the technical field of optical fiber manufacturing, the optical fiber fusion splicer comprises a fusion splicer main body, a fusion splicer table is fixedly arranged above the fusion splicer main body, two symmetrically arranged positioning clamps are arranged on the fusion splicer table, and electrode holders and high-voltage electrodes are symmetrically arranged on the fusion splicer table and located on the two sides between the two positioning clamps. According to the optical fiber fusion splicer, the electric arc is restrained through an axial magnetic field, and compared with a traditional fusion splicer which has the defects that the electric arc is dispersed and heating is not uniform, the generated thin columnar electric arc can enable the end face of an optical fiber to be fused to be uniformly heated, so that the fusion degree of the optical fiber to be fused is improved; the problem that the butt joint is not tight due to bumping caused by local over-melting or insufficient melting is avoided, the welding effect of the optical fiber is fundamentally improved, the insulating inner cylinder is made of a ceramic material and can tolerate a high-temperature environment generated by an electric arc, meanwhile, the non-magnetic property of ceramic ensures that a magnetic field is not shielded and attenuated, and it is guaranteed that the restraining effect is continuous and stable.

Description

TECHNICAL FIELD

[0001] The application provides a fiber fusion splicer, and particularly relates to the technical field of fiber manufacturing. BACKGROUND

[0002] The fiber fusion splicer is a communication construction equipment for butt joint of two fiber ends by melting the fiber ends through high-temperature arc generated by high-voltage electrode discharge, and the core performance thereof depends on the stability of the arc shape and the cleanliness of the high-voltage electrode, and the fiber fusion splicer is mainly used in communication network wiring and field fiber repair.

[0003] In the prior art, such as the fiber fusion splicer disclosed in patent CN202222597641.2, the electrode surface is cleaned by a ring-shaped sponge ring, which solves the problem of low cleaning efficiency of traditional manual disassembly, but does not provide an arc restraining structure, and the arc is prone to be in a divergent state during discharge, which causes uneven heating of the fiber end face and often results in local over-fusion bulging or insufficient fusion.

[0004] Therefore, the application provides a fiber fusion splicer to improve the deficiencies of the prior art. SUMMARY

[0005] In view of the defects of the prior art, the application provides a fiber fusion splicer, which can effectively solve the technical problems in the background art.

[0006] To achieve the above object, the application realizes the following technical scheme: The application discloses a fiber fusion splicer, which comprises a fusion main body, a fusion table fixedly arranged above the fusion main body, two symmetrical positioning clamps arranged on the fusion table, an electrode seat and a high-voltage electrode symmetrically arranged on both sides of the fusion table and located between the two positioning clamps, the electrode seat being fixedly installed on the fusion table, the high-voltage electrode being installed in the electrode seat, and two groups of electromagnetic fusion assisting mechanisms corresponding to the two high-voltage electrodes. Each group of electromagnetic fusion assisting mechanisms comprises a fixing seat, a positioning outer cylinder, an insulating inner cylinder and an electromagnetic coil, the fixing seat being fixedly installed on the fusion table, the positioning outer cylinder being fixedly installed on the fixing seat, the insulating inner cylinder being installed in the positioning outer cylinder, and the electromagnetic coil being wound around the outer circumferential surface of the insulating inner cylinder, the positioning outer cylinder, the insulating inner cylinder and the electromagnetic coil being coaxially arranged outside the corresponding high-voltage electrode. The two ends of the electromagnetic coil are provided with wire connection ends for connecting the built-in power supply module of the main body.

[0007] Preferably, the positioning outer cylinder and the insulating inner cylinder are both provided with connecting portions, and the insulating inner cylinder is fixedly connected with the positioning outer cylinder through the connecting portions and fastening bolts.

[0008] Preferably, the device further comprises a cooperative processing mechanism corresponding to each of the two groups of electromagnetic fluxing mechanisms. The cooperative processing mechanism comprises an air channel sleeve, which is sleeved outside the corresponding high-voltage electrode and located inside the insulating inner cylinder, and the air channel sleeve is coaxially arranged with the insulating inner cylinder.

[0009] Preferably, the air channel sleeve is internally provided with an integrally formed interlayer cylinder, an annular air flow channel is formed between the interlayer cylinder and the air channel sleeve, and the inner circumferential surface of the air channel sleeve is provided with a plurality of annularly equidistantly distributed flow guide ribs.

[0010] Preferably, one side of the annular air flow channel close to the discharge end of the high-voltage electrode is in an open shape, and the other side is in a closed shape, the closed shape portion of the annular air flow channel is fixedly connected with an annular pipe, the annular pipe is provided with a plurality of annularly distributed array pipes, and the array pipes are in communication with the annular air flow channel.

[0011] Preferably, the two air channel sleeves are connected through a gas guide pipe, and the gas guide pipe is provided with a connecting portion for connecting an external gas source.

[0012] Preferably, a plurality of annularly distributed array holes are formed in the interlayer cylinder, and the array holes are located close to the discharge end of the high-voltage electrode.

[0013] Preferably, the air channel sleeve is provided with a mounting portion, and the air channel sleeve is fastened with the end portion of the positioning outer cylinder through the mounting portion and bolts.

[0014] Preferably, the positioning outer cylinder, the insulating inner cylinder and the air channel sleeve are all made of ceramic material.

[0015] Preferably, the positioning clamp is used for clamping and positioning the to-be-fused optical fibers and has the function of automatically adjusting the coaxiality of the two to-be-fused optical fibers.

[0016] Compared with the known prior art, the technical scheme provided by the present application has the following beneficial effects: The optical fiber fusion machine generates a fine columnar arc through "axial magnetic field arc confinement", which can uniformly heat the end face of the to-be-fused optical fiber, avoids the problem of local over-fusion forming a bulge or insufficient fusion leading to loose butt joint, and fundamentally improves the fusion effect of the optical fiber. And the insulating inner cylinder adopts ceramic material, not only realizes the insulation isolation of electromagnetic coil and high-voltage electrode, prevents discharge short circuit, but also can resist the high temperature environment generated by electric arc, avoids the influence of self deformation on structure precision, and the non-magnetic characteristic of ceramic ensures that the magnetic field is not shielded and attenuated, and the restraint effect is continuous and stable; In addition, the insulating inner cylinder and the positioning outer cylinder are detachably connected, so that the electromagnetic coil or the insulating inner cylinder can be quickly disassembled and replaced during subsequent maintenance, thereby reducing equipment maintenance cost and downtime; Through the cooperation of the guide ribs in the air duct sleeve, it is ensured that the airflow is uniformly distributed to the annular channel, and the cleaning dead angle caused by uneven local airflow pressure is avoided; The sandwich cylinder is used for blowing the electrode discharge end root, and this area is the main attachment area of splashes, which further improves the cleaning thoroughness, slightly cools the electrode tip, reduces oxidation ablation, and prolongs the service life of the electrode; In addition, the micro air curtain formed when the airflow blows out from the channel opening end can isolate external dust, water vapor and other interference factors, so that the arc can be stabilized even in complex outdoor environments, the influence of the environment on the welding quality is reduced, the air duct sleeve is made of ceramic material, which is resistant to high temperature and does not interfere with the electromagnetic field, and the electromagnetic melting mechanism and the positioning outer cylinder are detachably connected, so that the guide ribs and the array holes can be conveniently cleaned in the future, the airflow channel is prevented from being blocked, and the long-term use effect is stable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front perspective view of the present application; Figure 2 is a partial perspective view of related components at the welding station in the present application; Figure 3 is a partial perspective view of related components at the fixed seat in the present application; Figure 4 is a partial perspective view of related components inside the positioning outer cylinder in the present application; Figure 5 is a partial exploded perspective view of related components at the positioning outer cylinder in the present application; Figure 6 is a partial exploded perspective view of related components at the positioning outer cylinder in the present application from another angle; Figure 7 is a partial perspective view of related components at the cooperative processing mechanism in the present application; Figure 8 is a partial perspective view of related components at the air duct sleeve and the positioning outer cylinder in the present application; Figure 9 is a partial perspective view of related components at the air duct sleeve in the present application; Figure 10 is a partial perspective view of related components inside the air duct sleeve in the present application; Figure 11 This is a partial three-dimensional structural diagram of the airway sleeve and related components at the guide rib in this invention.

[0018] The labels in the diagram represent: 1. Welding main body; 11. Welding table; 12. Positioning fixture; 13. Electrode holder; 14. High voltage electrode; 2. Electromagnetic fluxing mechanism; 21. Fixed base; 22. Positioning outer cylinder; 221. Connecting part; 222. Fastening bolt; 23. Insulating inner cylinder; 24. Electromagnetic coil; 241. Wiring connection terminal; 3. Co-processing mechanism; 31. Airway sleeve; 311. Guide rib; 312. Mounting part; 32. Sandwich cylinder; 33. Array hole; 34. Ring tube; 341. Array tube; 35. Air guide tube; 36. Connecting part. Detailed Implementation

[0019] The present invention will be further described below with reference to embodiments.

[0020] Example 1: like Figures 1 to 6 As shown, a fiber optic fusion splicer includes a fusion splicing main body 1. A fusion splicing table 11 is fixedly mounted on top of the fusion splicing main body 1. Two symmetrically arranged positioning clamps 12 are provided on the fusion splicing table 11. The positioning clamps 12 are used to clamp and position the optical fibers to be fused and have the function of automatically adjusting the coaxiality of the two optical fibers to be fused. Electrode holders 13 and high-voltage electrodes 14 are symmetrically arranged on both sides of the fusion splicing table 11, located between the two positioning clamps 12. The electrode holders 13 are fixedly mounted on the fusion splicing table 11, and the high-voltage electrodes 14 are installed inside the electrode holders 13. Note: The aforementioned components are all existing known technologies, and their specific structures and principles are not described in detail.

[0021] As a further improvement, it also includes two sets of electromagnetic fluxing mechanisms 2 that correspond one-to-one with the two high-voltage electrodes 14. Each electromagnetic fluxing mechanism 2 includes a fixed base 21, a positioning outer cylinder 22, an insulating inner cylinder 23, and an electromagnetic coil 24. The fixed base 21 is fixedly installed on the welding station 11, the positioning outer cylinder 22 is fixedly installed on the fixed base 21, the insulating inner cylinder 23 is installed inside the positioning outer cylinder 22, and the electromagnetic coil 24 is wound around the outer circumference of the insulating inner cylinder 23. The positioning outer cylinder 22, the insulating inner cylinder 23, and the electromagnetic coil 24 are all sleeved on the outside of the corresponding high-voltage electrode 14 and are coaxially arranged with the high-voltage electrode 14. A reasonable gap is left between the insulating inner cylinder 23 and the high-voltage electrode 14. This gap not only avoids insulation failure caused by direct contact between the insulating inner cylinder 23 and the high-voltage electrode 14, but also reserves space for the cooperation of subsequent functional modules, ensuring the compatibility of each component.

[0022] The two ends of the electromagnetic coil 24 are provided with wire connection ends 241 for connecting a built-in power supply module of the fusion main body 1. In actual application, the power supply timing of the built-in power supply module is synchronized with the fusion process of the fusion machine. When the fusion machine enters the pre-fusion or main fusion stage, the power supply module outputs current to the electromagnetic coil 24; after the fusion is completed and the cooling stage is entered, the power supply module automatically cuts off the power supply, thereby avoiding the electromagnetic coil 24 from heating due to long-term power supply, and at the same time ensuring that the magnetic field only acts on the stage of generating the electric arc, accurately constraining the plasma in the discharge area; and the axial magnetic field generated after the electromagnetic coil 24 is powered on can shrink the dispersed electric arc between the high-voltage electrodes 14 into a concentrated thin column, so that the end face of the to-be-fused optical fiber is heated more uniformly, reduces the situation of local over-fusion or insufficient fusion, and improves the quality of the fusion joint.

[0023] Further, the positioning outer cylinder 22 and the insulating inner cylinder 23 are both provided with a connecting part 221, and the insulating inner cylinder 23 is fixedly connected with the positioning outer cylinder 22 through the connecting part 221 and a fastening bolt 222. By adopting this detachable connection mode, the insulating inner cylinder 23 or the electromagnetic coil 24 can be conveniently maintained and replaced subsequently; it should be noted that the insulating inner cylinder 23 is made of ceramic material, which can not only realize the insulation isolation between the electromagnetic coil 24 and the high-voltage electrode 14 to avoid discharge short circuit, but also has high-temperature resistance to adapt to the high-temperature environment generated by the electric arc and avoid affecting the structural stability due to its own deformation.

[0024] Embodiment two: As shown in Figure 1 , Figures 7 to 11 , the optical fiber fusion machine further comprises a cooperative processing mechanism 3 corresponding to each of the two groups of electromagnetic fusion assisting mechanisms 2; The cooperative processing mechanism 3 comprises an air channel sleeve 31, which is sleeved outside the corresponding high-voltage electrode 14 and located inside the insulating inner cylinder 23, and the air channel sleeve 31 and the insulating inner cylinder 23 are coaxially arranged; the coaxial arrangement can ensure that the subsequent air flow path is accurately corresponding to the discharge area of the high-voltage electrode 14, avoid the air flow deviation to cause uneven cleaning and protection effect, and also can overlap with the magnetic field area of the electromagnetic fusion assisting mechanism 2 without interfering with the constraining effect of the magnetic field on the electric arc.

[0025] The air channel sleeve 31 is provided with an integrally formed interlayer cylinder 32 inside, and an annular air flow channel is formed between the interlayer cylinder 32 and the air channel sleeve 31. The inner circumferential surface of the air channel sleeve 31 is provided with a plurality of annular equidistantly distributed flow guide ribs 311; the flow guide ribs 311 can guide the air flow to form a spiral flow trajectory in the annular channel, and compared with straight air flow, the spiral air flow can more fully adhere to the outer circumferential surface of the high-voltage electrode 14, improve the blowing effect of the electrode surface contaminants, and also can enhance the stability of the air flow to avoid the air flow disorder affecting the electric arc shape.

[0026] The annular gas flow channel is open on one side close to the discharge end of the high-voltage electrode 14 and is closed on the other side. The closed part of the annular gas flow channel is fixedly connected with an annular pipe 34. The annular pipe 34 is provided with a plurality of array pipes 341 arranged in a ring shape. The array pipes 341 are connected with the annular gas flow channel. The annular arrangement of the array pipes 341 can uniformly disperse the gas flow input by the external gas source to each area of the annular gas flow channel, avoid local gas flow pressure being too high or too low, ensure the uniformity of the gas flow intensity in the entire channel, and then realize uniform cleaning of the outer circumferential surface of the high-voltage electrode 14.

[0027] The annular gas flow channels corresponding to the two air duct sleeves 31 are connected through a gas guide pipe 35. The gas guide pipe 35 is provided with a connecting part 36 for connecting the external gas source. The gas guide pipe 35 can realize that the two groups of cooperative processing mechanisms 3 share the same external gas source, and simplify the gas path layout. In actual application, the working time of the external gas source is synchronized with the fusion process of the fusion machine. The gas source is started before the pre-fusion stage and is turned off after the fusion cooling is completed. This can ensure the cleaning of the electrode surface before discharge, avoid the abnormal temperature of the electrode caused by long-term blowing of the gas flow, and form a micro air curtain around the discharge area of the high-voltage electrode 14 when the gas flow is blown out from the channel opening. This can isolate the external dust and water vapor from interfering with the arc.

[0028] Further, a plurality of array holes 33 arranged in a ring shape are formed in the interlayer cylinder 32. The array holes 33 are located close to the discharge end of the high-voltage electrode 14. The array holes 33 can make part of the gas flow in the annular gas flow channel blow out from the inner side of the interlayer cylinder 32 and directly act on the root area of the high-voltage electrode 14, i.e. the position close to the discharge end. This area is the main attachment area of the fiber fusion splashes. The auxiliary blowing of the inner gas flow can further improve the thoroughness of electrode cleaning and also slightly cool the discharge end of the electrode to reduce the oxidation and ablation of the electrode tip.

[0029] Further, the air duct sleeve 31 is provided with a mounting part 312. The air duct sleeve 31 is fastened and connected with the end part of the positioning outer cylinder 22 through the mounting part 312 and bolts. The connection mode of the bolts and the mounting part 312 can realize the quick disassembly and assembly of the air duct sleeve 31, facilitate the cleaning and maintenance of the structures such as the flow guide ribs 311 and the array holes 33 in the air duct sleeve 31, and avoid the blockage of the gas flow channel affecting the function after long-term use.

[0030] As a supplement to the above-mentioned embodiments one and two: the air channel sleeve 31 is provided with a mounting portion 312, and the air channel sleeve 31 is fastened and connected with the end portion of the positioning outer cylinder 22 through the mounting portion 312 and the bolt; the ceramic material belongs to a non-magnetic material, and the magnetic permeability is close to that of air, so that the axial magnetic field generated by the electromagnetic coil 24 cannot be shielded, attenuated or distorted, and the magnetic field can smoothly penetrate the insulating inner cylinder 23 to act on the discharge area between the high-voltage electrodes 14, so that the function of the electromagnetic arc confinement is not affected.

[0031] The complete working principle of the above-mentioned embodiments one and two is as follows: When the operator starts the fusion program of the fusion machine, the two positioning clamps 12 on the fusion table 11 first clamp the optical fibers to be fused, and the positioning clamps 12 automatically adjust the coaxiality of the two optical fibers to ensure accurate butt joint.

[0032] At this time, the high-voltage electrodes 14 symmetrically arranged on the fusion table 11 are ready to enter the discharge stage, and the two groups of electromagnetic fluxing mechanisms 2 and the cooperative processing mechanism 3 are started synchronously. The built-in power supply module of the fusion machine outputs current to the electromagnetic coil 24 in the pre-fusion or main fusion stage, and the electromagnetic coil 24 arranged on the outer periphery of the insulating inner cylinder 23 generates an axial magnetic field. Since the insulating inner cylinder 23 is made of ceramic material and is a non-magnetic material, the magnetic field can smoothly penetrate and cover the discharge area between the high-voltage electrodes 14, and the Lorentz force is applied to the arc plasma formed by ionization, so that the dispersed arc is contracted into a concentrated thin column.

[0033] After the fusion is completed and enters the cooling stage, the power supply module automatically cuts off the current, and the electromagnetic coil 24 stops working.

[0034] The external gas source is started before the pre-fusion stage, and the gas flow is divided into the annular gas flow passages of the two air channel sleeves 31 through the gas guide pipe 35. The gas flow is evenly introduced into the passages through the array pipes 341 on the annular pipe 34, and is guided by the guide ribs 311 on the inner periphery of the air channel sleeve 31 into a spiral gas flow, which flows along the outer periphery of the high-voltage electrodes 14 and is blown out from the passage opening end; at the same time, part of the gas flow is blown to the root portion of the electrode discharge end through the array holes 33 of the interlayer cylinder 32. After the fusion cooling is completed, the gas source is closed, and the gas flow stops outputting. During the whole process, the electromagnetic field and the spiral gas flow do not interfere with each other.

[0035] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An optical fiber fusion splicer, comprising a fusion main body (1), a fusion table (11) is fixedly arranged above the fusion main body (1), two symmetrical positioning clamps (12) are arranged on the fusion table (11), an electrode seat (13) and a high-voltage electrode (14) are symmetrically arranged on both sides of the fusion table (11) and between the two positioning clamps (12), the electrode seat (13) is fixedly installed on the fusion table (11), and the high-voltage electrode (14) is installed in the electrode seat (13), characterized in that two sets of electromagnetic fluxing mechanisms (2) corresponding to the two high-voltage electrodes (14) are further arranged. Each set of electromagnetic fluxing mechanisms (2) comprises a fixing seat (21), a positioning outer cylinder (22), an insulating inner cylinder (23) and an electromagnetic coil (24), the fixing seat (21) is fixedly installed on the fusion table (11), the positioning outer cylinder (22) is fixedly installed on the fixing seat (21), the insulating inner cylinder (23) is installed in the positioning outer cylinder (22), and the electromagnetic coil (24) is arranged on the outer circumferential surface of the insulating inner cylinder (23), the positioning outer cylinder (22), the insulating inner cylinder (23) and the electromagnetic coil (24) are all arranged outside the corresponding high-voltage electrode (14) and coaxially arranged with the high-voltage electrode (14). Both ends of the electromagnetic coil (24) are provided with wiring connection ends (241) for connecting the built-in power supply module of the fusion main body (1). The positioning outer cylinder (22) and the insulating inner cylinder (23) are both provided with a connecting portion (221), and the insulating inner cylinder (23) is fixedly connected with the positioning outer cylinder (22) through the connecting portion (221) and a fastening bolt (222).

2. The optical fiber fusion splicer of claim 1, wherein, A cooperative processing mechanism (3) corresponding to the two sets of electromagnetic fluxing mechanisms (2) is further arranged.

3. The optical fiber fusion splicer of claim 2, wherein, The cooperative processing mechanism (3) comprises an air channel sleeve (31), the air channel sleeve (31) is arranged outside the corresponding high-voltage electrode (14) and inside the insulating inner cylinder (23), and the air channel sleeve (31) is coaxially arranged with the insulating inner cylinder (23). An integrated interlayer cylinder (32) is arranged in the air channel sleeve (31), an annular air flow channel is formed between the interlayer cylinder (32) and the air channel sleeve (31), and the inner circumferential surface of the air channel sleeve (31) is provided with a plurality of annular equidistantly distributed flow guide ribs (311).

4. The optical fiber splicer according to claim 3, wherein, One side of the annular air flow channel close to the discharge end of the high-voltage electrode (14) is in an open state, and the other side is in a closed state, the closed state part of the annular air flow channel is fixedly connected with an annular pipe (34), a plurality of annularly distributed array pipes (341) are arranged on the annular pipe (34), and the array pipes (341) are connected with the annular air flow channel.

5. The optical fiber splicer according to claim 4, wherein, The corresponding annular air flow channels of the two air channel sleeves (31) are connected through a gas guide pipe (35), and the gas guide pipe (35) is provided with a connecting portion (36) for connecting an external gas source.

6. The optical fiber splicer according to claim 5, wherein, A plurality of annularly distributed array holes (33) are arranged on the interlayer cylinder (32), and the array holes (33) are located close to the discharge end of the high-voltage electrode (14).

7. The optical fiber splicer according to claim 4, wherein ​ 8. The optical fiber splicer according to claim 3, wherein, The air channel sleeve (31) is provided with a mounting portion (312), and the air channel sleeve (31) is fastened and connected with the end portion of the positioning outer cylinder (22) through the mounting portion (312) and a bolt.

9. The optical fiber splicer according to claim 1, wherein, The positioning outer cylinder (22), the insulating inner cylinder (23) and the air channel sleeve (31) are all made of ceramic material.

10. The fiber optic fusion splicer of claim 1, wherein, The positioning clamp (12) is used for clamping and positioning the to-be-fused optical fibers and has the function of automatically adjusting coaxiality of the two to-be-fused optical fibers.

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