Cable welding device for communication engineering

Abstract

The invention relates to the technical field of optical fiber fusion splicing, in particular to a cable fusion splicing device for communication engineering, which comprises a fusion splicing device main body, protection mechanisms are arranged at the front end and the rear end of the fusion splicing device main body, each protection mechanism comprises two turnover plates and two U-shaped baffles, and the turnover plates and the U-shaped baffles are matched to form a protection structure. High-temperature melt can be effectively prevented from splashing during welding, and workers are prevented from being scalded. By means of accurate clamping of the bolts and the round holes, the structure is stable in the protection state, additional disassembly and assembly of accessories are not needed, operation is easy, the operation safety of outdoor communication engineering is greatly improved, the protection mechanism can flexibly switch the protection state and the expansion state, a temporary working plane is formed during expansion, optical fiber end processing and accessory placement are facilitated, and tools are prevented from being scattered; the cable fixing mechanism controls a bidirectional lead screw through a knob, operation is easy and convenient, the two ends can be independently adjusted, cables of different diameters can be adapted, the operation preparation time is shortened, and the overall efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of optical fiber fusion splicing technology, and in particular to a cable fusion splicing device for communication engineering. Background Technology

[0002] The core function of the cable fusion splicing device is to achieve the fusion splicing of two optical fibers. When in use, the ends of the optical fibers to be connected are first stripped and cleaned. Then, the two optical fibers to be connected are inserted into the corresponding slots of the fusion splicing device to ensure that the end faces of the two optical fibers are precisely aligned. After that, welding powder and gunpowder are put into the designated area of ​​the main body 11 of the fusion splicing device. The high temperature released after the gunpowder is ignited causes the welding powder to melt and naturally combine with the end faces of the optical fibers, ultimately forming a stable optical fiber connection channel.

[0003] However, during the implementation of the above technical solution, at least the following technical problems were discovered:

[0004] During the fusion splicing process, the concentrated energy released by the gunpowder explosion generates extremely high temperatures exceeding 1500°C within the sealed mold cavity. This temperature field not only rapidly melts the end face of the quartz glass optical fiber, but also causes the metal reinforcing layer surrounding the optical fiber, such as stainless steel wire or aluminum tube, to melt instantly or even partially vaporize. The material phase change process is completed violently within milliseconds. Accompanied by the rapid expansion of gas and the surge in melt volume, the internal pressure of the mold suddenly rises to hundreds of kilopascals. When the pressure exceeds the cavity sealing threshold, hot molten quartz droplets, metal vapor, and unreacted fine particles are ejected at high pressure from tiny gaps such as the mold seam and cable inlet, forming a high-temperature phase flow with a speed of up to several meters per second. If this high-speed spray comes into direct contact with the human body, it will cause deep burns, increasing the safety hazards of the entire fusion splicing process. Summary of the Invention

[0005] The technical problem to be solved: During the fusion splicing process, the concentrated energy released by the gunpowder explosion generates extremely high temperatures exceeding 1500°C within the sealed mold cavity. This temperature field not only rapidly melts the end face of the quartz glass optical fiber, but also causes the metal reinforcing layer surrounding the optical fiber, such as stainless steel wire or aluminum tube, to melt instantly or even partially vaporize. The material phase change process is completed violently within milliseconds. Accompanied by the rapid expansion of gas and the surge in melt volume, the internal pressure of the mold suddenly rises to hundreds of kilopascals. When the pressure exceeds the cavity sealing threshold, hot molten quartz droplets, metal vapor, and unreacted fine particles are ejected at high pressure from tiny gaps such as the mold seam and cable inlet, forming a high-temperature phase flow with a speed of up to several meters per second. If this high-speed spray comes into direct contact with the human body, it will cause deep burns, increasing the safety hazards of the entire fusion splicing process.

[0006] To address the shortcomings of existing technologies, this invention provides a cable splicing device for communication engineering, thereby solving the technical problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A cable splicing device for communication engineering includes a splicing device body, and protective mechanisms are provided at both the front and rear ends of the splicing device body. The protective mechanisms include two flip plates and two U-shaped baffles.

[0009] The two ends of the main body of the welding device are also equipped with cable fixing mechanisms, which include two bidirectional lead screws and four clamping rollers.

[0010] In one possible implementation, a support base is fixedly connected to the lower surface of the welding device body, and a flip plate is hinged to both the front and rear sides of the support base.

[0011] In one possible implementation, a U-shaped groove is provided through the upper surface of both flip plates, and both flip plates are fitted with two U-shaped baffles through the U-shaped groove.

[0012] In one possible implementation, two vertically aligned circular holes are provided through both sides of each U-shaped baffle, and two fixing blocks are movably connected to both sides of each U-shaped baffle. The upper surface of each fixing block is fixedly connected to the lower surface of the corresponding flip plate.

[0013] In one possible implementation, a threaded groove is provided at the center point of each fixing block, and bolts are provided at opposite ends of two fixing blocks on the same side, with each bolt threadedly connected to the corresponding fixing block through the threaded groove.

[0014] In one possible implementation, the end of each bolt is fitted and corresponds to a circular hole.

[0015] In one possible implementation, both ends of the two U-shaped baffles are provided with arc-shaped notches II, and the opposite ends of the two U-shaped baffles are provided with arc-shaped notches I.

[0016] In one possible implementation, two U-shaped support plates are fixedly connected to the upper surface of the support base, and two bidirectional lead screws are located inside the two U-shaped support plates. The upper surfaces of the two bidirectional lead screws are rotatably connected to the inner walls of the U-shaped support plates.

[0017] In one possible implementation, the lower surfaces of both bidirectional lead screws are rotatably connected to the upper surface of the support base, and each bidirectional lead screw has a lifting block threaded onto both its upper and lower ends. The rear surface of each lifting block is rotatably connected to four clamping rollers.

[0018] In one possible implementation, a knob is provided at the upper end of each of the two U-shaped support plates, and the lower surface of each knob passes through the U-shaped support plate and is fixedly connected to the upper surface of the two bidirectional lead screws.

[0019] Beneficial effects compared to existing technologies:

[0020] 1. In this solution, the combination of a flip-up plate and a U-shaped baffle forms a protective structure that effectively blocks the splashing of high-temperature molten material during welding, preventing burns to workers. The precise locking mechanism using bolts and round holes ensures a stable structure in the protective configuration, requires no additional disassembly parts, simplifies operation, and significantly improves the safety of outdoor communication engineering operations.

[0021] 2. In this solution, the protective mechanism can flexibly switch between protective and extended states. When extended, it forms a temporary working surface, which facilitates the processing of fiber optic ends and the placement of accessories, and avoids tools from being scattered. The cable fixing mechanism is controlled by a knob to control a bidirectional screw, which is easy to operate. Both ends can be adjusted independently to adapt to cables of different diameters, shortening the preparation time and improving overall efficiency.

[0022] 3. In this solution, the clamping rollers of the cable fixing mechanism adopt a rotating connection design, which allows for small-amplitude angle adjustments and position calibration of the optical fiber, reducing outer wall wear and preventing damage to the fiber core. The symmetrical clamping structure ensures precise fiber splicing, reduces splice loss, and is adaptable to flexible outdoor operating scenarios, meeting the needs of different communication engineering operations.

[0023] 4. In this design, the arc-shaped notches of the U-shaped baffles combine to form specialized holes, ensuring accurate gunpowder delivery while also accommodating the installation of fiber optic cables. Critical operations can be completed without disassembling the protective components. The overall structure is compact, combining safety protection, ease of operation, and versatility, thus enhancing the overall performance of the device. Attached Figure Description

[0024] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the protective mechanism of the present invention in use;

[0027] Figure 3 This is a schematic diagram of the U-shaped support plate of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the flip plate of the present invention;

[0029] Figure 5This is a schematic diagram of the structure of the U-shaped baffle of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the fixing block of the present invention;

[0031] Figure 7 For the present invention Figure 6 A magnified structural diagram of point A in the middle.

[0032] Legend: 11. Main body of welding device; 12. Clamping roller; 13. U-shaped support plate; 14. Flip plate; 15. U-shaped baffle; 16. Support base; 17. Knob; 18. Two-way lead screw; 19. Lifting block; 20. Arc-shaped notch one; 21. U-shaped groove; 22. Arc-shaped notch two; 23. Bolt; 24. Fixing block; 25. Round hole; 26. Threaded groove. Detailed Implementation

[0033] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0034] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples;

[0038] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0039] Example:

[0040] Please refer to Figure 1 and Figure 7 As shown in the figure, this embodiment introduces a cable splicing device for communication engineering, including a splicing device body 11. The splicing device body 11 is a mold-type device, and its core function is to realize the splicing operation of two optical fibers. In actual use, the ends of the optical fibers to be connected need to be stripped and cleaned first. Then, the two optical fibers to be connected are inserted into the corresponding slots of the splicing device body 11. During this process, it is necessary to ensure that the end faces of the two optical fibers can be accurately aligned. Next, welding powder and gunpowder are put into the designated area of ​​the splicing device body 11. The high temperature released after the gunpowder is ignited causes the welding powder to melt and naturally combine with the end faces of the optical fibers, finally forming a stable and reliable optical fiber connection channel.

[0041] During the fusion splicing process, high temperatures are generated, which may cause the optical fiber glass or metal components to melt and sputter. To prevent burns to workers caused by the sputtering of optical fiber and welding powder during the use of the fusion splicing device body 11, protective mechanisms are provided at both ends of the fusion splicing device body 11. The protective mechanisms include two flip plates 14 and two U-shaped baffles 15. A support base 16 is fixedly connected to the lower surface of the fusion splicing device body 11. Flip plates 14 are hinged to both the front and rear sides of the support base 16. U-shaped grooves 21 are opened through the upper surface of the two flip plates 14. The two flip plates 14 are fitted with the two U-shaped baffles 15 through the U-shaped grooves 21.

[0042] The two flip plates 14 are initially flush with the upper surface of the support base 16. Each U-shaped baffle 15 has two vertically aligned circular holes 25 through both sides. Each U-shaped baffle 15 has two movably connected fixing blocks 24 corresponding to the positions of the circular holes 25. The upper surface of each fixing block 24 is fixedly connected to the lower surface of the corresponding flip plate 14. A threaded groove 26 is provided at the center point of each fixing block 24. Bolts 23 are provided at opposite ends of the two fixing blocks 24 on the same side. Each bolt 23 is threaded into the corresponding fixing block 24 through the threaded groove 26, and the end position of each bolt 23 is adapted to and corresponds to the circular hole 25. The two circular holes 25 on the same side are arranged vertically. When the protective mechanism is not in use, the two flip plates 14... The connection between the two flip plates 14 and the support base 16 is hinged, so the operator can lay the two flip plates 14 flat so that they are flush with the support base 16. At this time, pull down the two U-shaped baffles 15. When the lower surface of the U-shaped baffles 15 is flush with the lower surface of the support base 16, the round hole 25 at the upper end of the U-shaped baffles 15 is aligned with the bolt 23. Then, rotate the bolt 23, and the end of the bolt 23 will continuously enter the round hole 25. At this time, the bolt 23 limits the U-shaped baffles 15 through the round hole 25. The two flip plates 14 will form an expanded working plane, and under the support of the two U-shaped baffles 15, they will not easily wobble. This provides the operator with a temporary operating area for fiber optic end stripping and cleaning, avoiding the problem of tools and fiber optic accessories being scattered, and providing a convenient platform for preparation work before fusion splicing.

[0043] When welding is required, the operator flips the two flip plates 14 so that they are perpendicular to the support base 16, and rotates the bolt 23 in the opposite direction to release the bolt 23 from its engagement with the U-shaped baffle 15. Then, the two U-shaped baffles 15 are pulled closer together. When the two U-shaped baffles 15 are in contact, the lower circular holes 25 of both U-shaped baffles 15 correspond to the bolt 23. At this point, the bolt 23 is rotated again so that the end of the bolt 23 re-engages with the lower circular holes 25. Through the cooperation of the two flip plates 14 and the two U-shaped baffles 15, the protective mechanism can cover the main body 11 of the welding device. This device effectively blocks the splashing of molten optical fiber glass, metal debris, and welding powder, preventing burns to workers and significantly improving operational safety. The precise engagement of bolt 23 and round hole 25 ensures structural stability in the protected state, preventing loosening or shifting due to welding vibrations. Furthermore, the mechanism requires no additional disassembly parts; simple operations such as flipping, pulling, and rotating allow for switching between protected and extended states, adapting to various operational needs. Its compact and practical design makes it particularly suitable for flexible outdoor communication engineering scenarios, further enhancing the device's safety and ease of operation.

[0044] Both ends of the two U-shaped baffles 15 are provided with arc-shaped notches 22, and the opposite ends of the two U-shaped baffles 15 are provided with arc-shaped notches 20. When the protection mechanism is in use, the two U-shaped baffles 15 come into contact, so that the two arc-shaped notches 20 form a circular hole. At this time, the operator can put gunpowder into the main body 11 of the welding device through the circular hole formed by the two arc-shaped notches 20. The arc-shaped notches 22 on the two U-shaped baffles 15 also combine to form a circular hole. The circular hole formed by the arc-shaped notches 22 can allow optical fiber cables to pass through. The circular hole formed by the combination of the two arc-shaped notches 20 can achieve accurate gunpowder delivery under the premise that the protection mechanism is completely closed and the risk of splashing is isolated, without the need for additional disassembly of the protection components. The circular hole formed by the combination of the two arc-shaped notches 22 can adapt to the installation requirements of optical fiber cables, ensuring that the cables maintain a stable docking posture during the welding process and not affecting the normal operation process of the welding operation.

[0045] To ensure that the optical fiber cables at both ends of the fusion splicing device body 11 do not shift position during operation, cable fixing mechanisms are provided at both ends of the fusion splicing device body 11. The cable fixing mechanisms include two bidirectional lead screws 18 and four clamping rollers 12. Two U-shaped support plates 13 are fixedly connected to the upper surface of the support base 16. Both bidirectional lead screws 18 are located inside the two U-shaped support plates 13. The upper surfaces of both bidirectional lead screws 18 are rotatably connected to the inner walls of the U-shaped support plates 13, and the lower surfaces of both bidirectional lead screws 18 are rotatably connected to the upper surface of the support base 16. Lifting blocks 19 are threaded onto both the upper and lower ends of each bidirectional lead screw 18. The rear surface of each lifting block 19 is rotatably connected to the four clamping rollers 12. During use, the operator places one end of the optical fiber cable between the two clamping rollers 12 at the same end and rotates the bidirectional lead screw 18. The reverse threads at its upper and lower ends drive the two sets of lifting blocks 19 to move towards each other, thereby driving the two... The clamping rollers 12 move in sync until they are tightly fitted against the outer wall of the optical fiber cable, thus clamping and fixing the optical fiber. The same process is used to fix the other end of the optical fiber, ensuring that the two optical fibers maintain a precise alignment during the splicing operation and do not shift due to external force or vibration. This cable fixing mechanism, through the threaded transmission between the bidirectional screw 18 and the lifting block 19, can synchronously drive the two sets of clamping rollers 12 to center and clamp the optical fiber. It can adapt to communication optical fiber cables of different diameters and specifications. The clamping process is stable and damage-free, avoiding the problem of easily damaging the glass core of the optical fiber by traditional clamps. At the same time, the symmetrical clamping structure ensures that the optical fiber is always in the center alignment position of the splicing device body 11, which greatly improves the alignment accuracy of optical fiber splicing, reduces splicing loss, and is simple and quick to operate. Fixing can be completed by simply rotating the bidirectional screw 18, which effectively shortens the preparation time and improves the efficiency and stability of the overall splicing operation.

[0046] The clamping roller 12 and the lifting block 19 adopt a short-axis rotating design. On the one hand, after the initial clamping is completed, the optical fiber cable can still be adjusted by a small angle or slightly axially calibrated between the two rollers, avoiding the problem of difficulty in fine adjustment due to the complete locking of the clamp. On the other hand, during the process of threading the optical fiber, that is, when the optical fiber is inserted into the body 11 of the fusion splice device from the outside of the clamping mechanism, the clamping roller 12 can roll with the movement of the optical fiber, changing the sliding friction between the traditional fixed clamp and the cable into rolling friction. This transformation can greatly reduce the frictional resistance and surface wear of the optical fiber sheath during the threading process, and effectively prevent potential damage to the internal fiber core caused by rough operation or frictional heat.

[0047] Both U-shaped support plates 13 are equipped with knobs 17 at their upper ends. The lower surfaces of both knobs 17 pass through the U-shaped support plates 13 and are fixedly connected to the upper surfaces of the two bidirectional lead screws 18. Operators can directly rotate the knobs 17 to control the rotation of the two bidirectional lead screws 18. The clamping rollers 12 at both ends of the fusion splicing device body 11 can be adjusted individually. When the diameters of the optical fiber cables to be connected at both ends are different, the corresponding knobs 17 can be rotated to independently drive the bidirectional lead screws 18 at both ends to move the lifting blocks 19, thereby adjusting the spacing of the clamping rollers 12 at both ends. This ensures that optical fiber cables of different diameters can obtain a stable and suitable clamping effect, avoiding loose clamping or excessive squeezing damage due to differences in cable diameter.

[0048] Working principle:

[0049] In the first step, initially, the flip plate 14 is laid flat with the upper surface of the support base 16 through hinge, forming an extended working plane. The U-shaped baffle 15 is aligned with the fixing block 24 on the lower surface of the flip plate 14 through the round hole 25 on it, and is fixed by screwing in the bolt 23. At this time, the flip plate 14 and the U-shaped baffle 15 together form a stable and flat temporary operating table, providing a convenient platform for workers to perform fiber end stripping, cleaning and other preparatory work before fusion splicing, while preventing tools and accessories from falling.

[0050] In the second step, during the welding operation, the protection mechanism achieves closed protection through structural reorganization. The operator flips the rotating plate 14 vertically so that it is perpendicular to the support base 16. At the same time, the bolt 23 is loosened to make the U-shaped baffle 15 movable. The two U-shaped baffles 15 are pulled towards each other until they contact each other. At this time, the round hole 25 at the bottom of the U-shaped baffle 15 is aligned with the bolt 23 again. Tightening the bolt 23 can fix the U-shaped baffle 15. After closing, the rotating plate 14 and the U-shaped baffle 15 form an enclosing structure, covering the main body 11 of the welding device, effectively blocking the splashing of high-temperature molten material. The arc-shaped notch 1 20 and arc-shaped notch 22 on the U-shaped baffle 15 are used to put out gunpowder and insert optical fiber, respectively, so as to achieve uninterrupted operation in the protected state.

[0051] The third step involves the cable fixing mechanism using a bidirectional screw 18 and clamping rollers 12 to stably clamp the optical fiber. The operator places the optical fiber between the two clamping rollers 12 at the same end and rotates the bidirectional screw 18. The reverse threads at both ends of the screw drive the two sets of lifting blocks 19 to move towards each other, thereby causing the clamping rollers 12 to move closer together until they are tightly fitted against the outer wall of the optical fiber. This process can be adapted to optical fibers of different diameters. The rotational connection between the clamping rollers 12 and the lifting blocks 19 converts sliding friction into rolling friction, reducing cable wear. The fixing mechanisms at both ends can be adjusted independently. By rotating the knobs 17 on the corresponding U-shaped support plates 13, the corresponding bidirectional screw 18 is driven to operate, ensuring that the optical fiber is accurately aligned during splicing and preventing positional displacement due to vibration or external force.

[0052] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

Claims

1. A cable splicing device for communication engineering, comprising a splicing device body (11), characterized in that, The front and rear ends of the main body (11) of the welding device are provided with protective mechanisms, which include two flip plates (14) and two U-shaped baffles (15). The two ends of the main body (11) of the welding device are also provided with cable fixing mechanisms, which include two bidirectional lead screws (18) and four clamping rollers (12).

2. The cable splicing device for communication engineering as described in claim 1, characterized in that, The lower surface of the main body (11) of the welding device is fixedly connected to a support base (16), and the front and rear sides of the support base (16) are hinged with flip plates (14).

3. The cable splicing device for communication engineering as described in claim 2, characterized in that, The upper surfaces of the two flip plates (14) are provided with U-shaped grooves (21), and the two flip plates (14) are fitted with two U-shaped baffles (15) through the U-shaped grooves (21).

4. The cable splicing device for communication engineering as described in claim 2, characterized in that, Each of the U-shaped baffles (15) has two vertically aligned circular holes (25) through both sides, and each of the U-shaped baffles (15) has two fixed blocks (24) movably connected to both sides. The upper surface of each fixed block (24) is fixedly connected to the lower surface of the corresponding flip plate (14).

5. A cable splicing device for communication engineering as described in claim 4, characterized in that, Each of the fixing blocks (24) has a threaded groove (26) at its center point. Two fixing blocks (24) on the same side are provided with bolts (23) at opposite ends. Each bolt (23) is threadedly connected to the corresponding fixing block (24) through the threaded groove (26).

6. The cable splicing device for communication engineering as described in claim 5, characterized in that, The end position of each bolt (23) is adapted to and corresponds to the circular hole (25).

7. A cable splicing device for communication engineering as described in claim 1, characterized in that, Both ends of the two U-shaped baffles (15) are provided with arc-shaped notches (22), and the opposite ends of the two U-shaped baffles (15) are provided with arc-shaped notches (20).

8. A cable splicing device for communication engineering as described in claim 2, characterized in that, The upper surface of the support base (16) is fixedly connected to two U-shaped support plates (13), and two bidirectional screw rods (18) are located inside the two U-shaped support plates (13). The upper surfaces of the two bidirectional screw rods (18) are rotatably connected to the inner wall of the U-shaped support plate (13).

9. A cable splicing device for communication engineering as described in claim 8, characterized in that, The lower surfaces of the two bidirectional lead screws (18) are rotatably connected to the upper surface of the support base (16). Each bidirectional lead screw (18) has a lifting block (19) threaded onto both its upper and lower ends. The rear surface of each lifting block (19) is rotatably connected to four clamping rollers (12).

10. A cable splicing device for communication engineering as described in claim 9, characterized in that, Both of the U-shaped support plates (13) are provided with knobs (17) at their upper ends. The lower surfaces of the two knobs (17) pass through the U-shaped support plates (13) and are fixedly connected to the upper surfaces of the two bidirectional lead screws (18).

Images