Optical fiber supply system for optical fiber fused biconical taper machine

Abstract

The invention relates to an optical fiber supply system for an optical fiber fused biconical taper machine, which comprises a feeding electric sliding table and two coating layer cleaning devices, a sliding block of the feeding electric sliding table is provided with an optical fiber feeding pneumatic clamping jaw, the front end of the feeding electric sliding table is provided with a front-end pneumatic clamping jaw and a front-end pressing cylinder for driving the front-end pneumatic clamping jaw to lift, and the front-end pressing cylinder is provided with a rear-end pressing cylinder for driving the front-end pressing cylinder to lift. The rear end of the feeding electric sliding table is provided with a rear-end pneumatic clamping jaw and a rear-end downward pressing air cylinder for driving the rear-end pneumatic clamping jaw to ascend and descend, and a cutting-off pneumatic shear and a cutting-off shear advancing air cylinder for driving the cutting-off pneumatic shear to move in the radial direction of the optical fiber are arranged between the rear-end pneumatic clamping jaw and the coating layer cleaning device. According to the optical fiber tapering device, optical fibers in an optical fiber roll can be drawn out, the optical fibers are arranged on the two coating layer cleaning devices, coating layers at two positions on the optical fibers are removed through the two coating layer cleaning devices, accordingly, appropriate optical fibers are provided for the subsequent tapering procedure, the whole process is automatically completed, manual intervention is not needed, and the working efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber fusion, and in particular to an optical fiber supply system for an optical fiber fusion taper machine. Background Art

[0002] Optical fiber is the abbreviation of optical fiber, which is a fiber made of glass or plastic and can be used as a light transmission tool. The optical fiber coating is the outermost structure of the optical fiber. When the glass optical fiber is pulled out from the preform rod, a layer of elastic coating is cured with ultraviolet light to prevent contamination by dust. It is composed of acrylate, silicone rubber and nylon.

[0003] The fused taper manufacturing process is to bring two (or more) single-mode (or multi-mode) optical fibers with their coating removed close together in a certain way, heat and melt them at high temperature, and stretch them to both sides at the same time to form a bidirectional cone structure to achieve the manufacturing of optical fiber devices. The equipment used for the fused taper manufacturing of optical fiber devices is a fused taper machine.

[0004] Before the optical fiber fusion taper machine fuses two or more optical fibers, at least two optical fibers need to be provided, and there are two positions on each of the two optical fibers to remove the coating, one of which is used for melting, and the other is used to be placed at the optical receiver to detect the splitting of the two optical fibers after melting. In order to improve automation, an optical fiber supply system is needed to realize the preparation work before optical fiber taper. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an optical fiber supply system for an optical fiber fusion taper machine.

[0006] The present invention is achieved through the following technical scheme, which provides an optical fiber supply system for an optical fiber fusion taper machine, including an electric feeding slide and two coating cleaning devices arranged along the length direction of the electric feeding slide, the slider of the electric feeding slide is equipped with an optical fiber feeding pneumatic clamp, the front end of the electric feeding slide is equipped with a front end pneumatic clamp and a front end downward pressure cylinder for driving the front end pneumatic clamp to rise and fall, the rear end of the electric feeding slide is equipped with a rear end pneumatic clamp and a rear end downward pressure cylinder for driving the rear end pneumatic clamp to rise and fall, and a cutting pneumatic scissors and a cutting scissors forward cylinder for driving the cutting pneumatic scissors to move along the radial direction of the optical fiber are installed between the rear end pneumatic clamp and the coating cleaning device.

[0007] As an optimization, a fiber optic guide tube is also included behind the rear pneumatic gripper.

[0008] As an optimization, a feeding support arm extending forward is fixedly connected to the slider of the feeding electric slide, and the optical fiber feeding pneumatic clamp is fixedly connected to the front end of the feeding support arm.

[0009] As an optimization, the coating cleaning device includes two optical fiber clamping mechanisms for clamping the optical fiber and a cleaning electric slide that moves along the length direction of the optical fiber. The moving part of the cleaning electric slide is equipped with a stripping mechanism driving cylinder and a cleaning mechanism driving cylinder. The stripping mechanism driving cylinder is equipped with a stripping mechanism, and the cleaning mechanism driving cylinder is equipped with a cleaning mechanism. The cleaning mechanism includes a cleaning bracket and a cleaning pneumatic clamp fixed to the cleaning bracket, and cleaning claws are fixed to both clamping fingers of the cleaning pneumatic clamp. Two cloth strip racks are installed on the cleaning bracket, and the two cloth strips respectively bypass the two cloth strip racks and enter between the two cleaning claws.

[0010] As an optimization, the cleaning mechanism further comprises two cloth strip discs axially connected to the cleaning bracket, and the two cloth strips are respectively wound around the two cloth strip discs.

[0011] As an optimization, the cleaning mechanism includes a cloth strip pneumatic clamp and a cloth strip pulling cylinder for driving the cloth strip pneumatic clamp to move, and one end of the two cloth strips away from the cloth strip disk passes through two clamping fingers of the cloth strip pneumatic clamp.

[0012] As an optimization, the cleaning mechanism further includes a cleaning liquid spray head mounted on the cleaning bracket and a cleaning liquid pump for supplying cleaning liquid to the cleaning liquid spray head.

[0013] As an optimization, the stripping mechanism includes a stripping clamp and a stripping clamp cylinder for driving the stripping clamp to open and close.

[0014] As an optimization, the optical fiber clamping mechanism includes an optical fiber table and an angle clamping cylinder for pressing the optical fiber onto the optical fiber table.

[0015] As an optimization, the optical fiber platform is fixedly connected with optical fiber guide plates located on both sides of the clamping block of the corner clamping cylinder, and the optical fiber guide plates are provided with V-shaped guide grooves.

[0016] The beneficial effects of the present invention are as follows: an optical fiber supply system for an optical fiber fusion taper machine of the present invention can realize the extraction of optical fiber from an optical fiber roll, and is arranged on two coating cleaning devices. The coating layers at two positions on the optical fiber are removed by the two coating cleaning devices, thereby providing suitable optical fiber for the subsequent taper process. The entire process is completed automatically without manual intervention, and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 A top view of the present invention; Figure 3 It is a front view of the present invention; Figure 4 It is a structural schematic diagram of the coating layer cleaning device of the present invention; Figure 5A top view of the coating cleaning device of the present invention; Figure 6 This is a schematic diagram of the cleaning mechanism structure of the present invention; Figure 7 It is a front view of the cleaning mechanism of the present invention; Figure 8 It is a right side view of the cleaning mechanism of the present invention; Fig. 9 For the present invention Figure 8 Sectional view of the middle AA plane; Fig.10 For the present invention Fig. 9 Middle partial enlarged picture; Fig.11 It is a schematic diagram of the structure of the peeling mechanism of the present invention; Fig.12 It is a front view of the peeling mechanism of the present invention; Fig.13 It is a schematic diagram of the structure of the optical fiber clamping mechanism of the present invention; As shown in the figure: 1. Feeding electric slide, 2. Coating cleaning device, 3. Optical fiber feeding pneumatic clamp, 4. Cutting scissors forward cylinder, 5. Cutting pneumatic scissors, 6. Rear end pressing cylinder, 7. Rear end pneumatic clamp, 8. Optical fiber, 9. Front end pressing cylinder, 10. Front end pneumatic clamp, 11. Optical fiber roll, 12. Feeding support arm, 13. Optical fiber guide tube, 21. Cleaning electric slide, 22. Stripping mechanism, 221. Stripping clamp mounting seat, 222. Fixed clamp, 223. Floating clamp, 224. Stripping clamp cylinder, 225. Fixed clamp stripping slot, 2 26. Floating clamp stripping slot, 23. Cleaning mechanism, 231. Cleaning bracket, 232. Cleaning pneumatic clamp, 233. Cleaning claw, 234. Cloth rack, 235. Cleaning liquid pump, 236. Cleaning liquid nozzle, 237. Cloth disc, 238. Cloth, 239. Cloth pneumatic clamp, 230. Cloth pulling cylinder, 24. Optical fiber clamping mechanism, 241. Optical fiber table, 242. Corner clamping cylinder, 243. Optical fiber guide plate, 25. Stripping mechanism driving cylinder, 26. Cleaning mechanism driving cylinder, 27. Cleaning device bottom plate. DETAILED DESCRIPTION

[0018] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0019] like Figures 1 to 13 As shown, an optical fiber supply system for an optical fiber fusion taper machine of the present invention comprises an electric feeding slide 1 and two coating cleaning devices 2 arranged along the length direction of the electric feeding slide 1. The electric feeding slide 1 is horizontally placed on a frame, and the slide block is driven by a motor to move linearly.

[0020] The slider of the feeding electric slide 1 is provided with an optical fiber feeding pneumatic clamp 3. In this embodiment, a feeding support arm 12 extending forward is fixedly connected to the slider of the feeding electric slide 1, and the optical fiber feeding pneumatic clamp 3 is fixedly connected to the front end of the feeding support arm 12. The opening of the optical fiber feeding pneumatic clamp 3 faces downward.

[0021] It also includes an optical fiber conduit 13 located behind the rear pneumatic clamp 7. The optical fiber in the optical fiber reel 11 passes through the optical fiber conduit 13 and is clamped by the optical fiber feeding pneumatic clamp 3. The optical fiber feeding pneumatic clamp 3 moves forward to arrange the optical fiber in a position parallel to the feeding electric slide 1.

[0022] The front end of the feeding electric slide 1 is equipped with a front pneumatic clamp 10 and a front pressing cylinder 9 for driving the front pneumatic clamp 10 to rise and fall. The front pneumatic clamp 10 is fixed on the telescopic shaft of the front pneumatic clamp 9. The front pneumatic clamp 9 is a slider cylinder fixed on the frame, and the opening of the front pneumatic clamp 10 faces upward. The rear end of the feeding electric slide 1 is equipped with a rear pneumatic clamp 7 and a rear pressing cylinder 6 for driving the rear pneumatic clamp 7 to rise and fall. The rear pneumatic clamp 7 is fixed on the telescopic shaft of the rear pneumatic clamp 6. The rear pneumatic clamp 6 is a slider cylinder fixed on the frame.

[0023] The optical fiber feeding pneumatic clamp 3 moves forward to arrange the optical fiber above the rear end pneumatic clamp 7 and the front end pneumatic clamp 10, and the rear end pneumatic clamp 7 and the front end pneumatic clamp 10 move upward. After clamping the optical fiber, the optical fiber feeding pneumatic clamp 3 is released, and the rear end pneumatic clamp 7 and the front end pneumatic clamp 10 descend to move the optical fiber downward and press it on the optical fiber table 241 of the coating cleaning device 2, and the rear end pneumatic clamp 7 and the front end pneumatic clamp 10 continue to press downward to bend the two ends of the optical fiber downward, thereby achieving the tensioning of the optical fiber, which is convenient for the subsequent removal of the coating.

[0024] A cutting pneumatic scissors 5 and a cutting scissors forward cylinder 4 for driving the cutting pneumatic scissors 5 to move radially along the optical fiber 8 are installed between the rear pneumatic clamping jaws 7 and the coating cleaning device 2. The cutting pneumatic scissors 5 in this embodiment are fixed on the telescopic shaft of the cutting scissors forward cylinder 4, and the cutting scissors forward cylinder 4 moves horizontally, thereby moving the cutting opening of the cutting pneumatic scissors 5 to the optical fiber position, so as to facilitate the cutting of the optical fiber.

[0025] The coating cleaning device 2 includes two fiber clamping mechanisms 24 for clamping the optical fiber and a cleaning electric slide 21 that moves along the length direction of the optical fiber. In this embodiment, the fiber clamping mechanism 24 and the cleaning electric slide 21 are both installed on a horizontal cleaning device base plate 27. The two fiber clamping mechanisms 24 are located on one side of the cleaning electric slide 21. The cleaning electric slide is a prior art, and its moving part is a horizontal plate, which is driven by a motor screw to move horizontally.

[0026] The optical fiber is clamped on two optical fiber clamping mechanisms 24 , and the coating removal and cleaning operations are performed on the optical fiber between the two optical fiber clamping mechanisms 24 .

[0027] like Fig.13 As shown, the optical fiber clamping mechanism 24 includes an optical fiber table 241 and an angle clamping cylinder 242 for pressing the optical fiber onto the optical fiber table 241. The upper end surface of the optical fiber table 241 is a plane. The angle clamping cylinder 242 is fixed to the side of the optical fiber table 241 by bolts. The angle clamping cylinder 242 is a prior art, and the upper end is a clamping block, which is driven by pneumatic lifting and rotation. In this embodiment, the rotation angle of the clamping block is 90 degrees. When clamping, the clamping block first rotates 90 degrees to the top of the optical fiber table 241, and then the clamping block presses the light onto the optical fiber table 241 downward; when releasing, the clamping block first moves upward, and then rotates 90 degrees to avoid the position above the open optical fiber table 241, so that the optical fiber feeding pneumatic clamp 3 can arrange the new optical fiber above the open optical fiber table 241.

[0028] The optical fiber table 241 is fixedly connected with optical fiber guide plates 243 located on both sides of the clamping block of the corner clamping cylinder 242. The optical fiber guide plates 243 are provided with V-shaped guide grooves, so as to facilitate the positioning of the optical fiber after clamping so that it is located in the V-shaped guide groove.

[0029] The moving part of the cleaning electric slide 21 is equipped with a stripping mechanism driving cylinder 25 and a cleaning mechanism driving cylinder 26, and the extension and retraction directions of the stripping mechanism driving cylinder 25 and the cleaning mechanism driving cylinder 26 are perpendicular to the moving direction of the cleaning electric slide 21. The stripping mechanism 22 is installed on the extension end of the stripping mechanism driving cylinder 25, and the stripping mechanism 22 is used for stripping the coating layer. The cleaning mechanism 23 is installed on the extension end of the cleaning mechanism driving cylinder 26, and the cleaning mechanism 23 is used for cleaning after stripping.

[0030] like Fig.11 , 12 As shown, the stripping mechanism 22 includes a stripping jaw and a stripping jaw cylinder 224 for driving the stripping jaw to open and close. The stripping jaw includes a fixed jaw 222 and a floating jaw 223. The fixed jaw 222 is fixed on a stripping jaw mounting seat 221. The stripping jaw mounting seat 221 is fixed to the telescopic end of the stripping mechanism driving cylinder 25 by bolts. The floating jaw 223 is hinged to the fixed jaw 222. A fixed jaw stripping groove 225 is provided in the jaw of the fixed jaw. A floating jaw stripping groove 226 is provided in the jaw of the floating jaw 223. The stripping jaw cylinder 224 is installed on the stripping jaw mounting seat. The stripping jaw cylinder 224 drives the floating jaw 223 to swing, thereby realizing the opening and closing of the stripping jaw.

[0031] After the stripping clamp is closed, the fixed clamp stripping groove 225 and the floating clamp stripping groove 226 wrap the optical fiber, and are driven by the cleaning electric slide 21 to move along the optical fiber to remove the coating layer.

[0032] like Figure 5-9 As shown, the cleaning mechanism 23 includes a cleaning bracket 231 and a cleaning pneumatic clamp 232 fixed to the cleaning bracket 231. The cleaning bracket 231 is fixed to the telescopic end of the cleaning mechanism driving cylinder 26 by bolts. The cleaning pneumatic clamp 232 is installed at one end of the cleaning bracket 231 close to the optical fiber 8, and the two clamping fingers of the cleaning pneumatic clamp 232 open and close up and down.

[0033] The two clamping fingers of the cleaning pneumatic clamping jaw 232 are fixedly connected with a cleaning claw 233. Figure 8 As described above, the cleaning claw 233 is fixed to the side of the clamping finger of the cleaning pneumatic clamping claw 232 , so that the cleaning claw 233 and the cleaning pneumatic clamping claw 232 are staggered, so that the rear cloth strip can pass through the two cleaning claws 233 backwards.

[0034] The cleaning bracket 231 is provided with two cloth strip racks 234, the front end of the cloth strip racks 234 extends to the front of the cleaning claws 233, and the two cloth strips 238 respectively bypass the two cloth strip racks 234 and enter between the two cleaning claws 233. In this embodiment, the cloth strip rack 234 includes side strips on both sides and a plurality of round bars connected between the two side strips, such as Fig.10 As shown, the cloth strip passes through the round rod and is positioned by the side strips on both sides to prevent left and right movement.

[0035] The cleaning mechanism 23 also includes two cloth strip discs 237 axially connected to the cleaning bracket 231, and two cloth strips 238 are respectively wound around the two cloth strip discs 237. After the cloth strips are drawn out from the cloth strip discs 237, they enter between the two cleaning claws 233. Then, after the two cloth strips clean the middle optical fiber, the two cloth strips are attached backwards, pass through the guide slit on the cleaning bracket 231, and then enter the cloth strip pneumatic clamping claws 239 at the back.

[0036] The cleaning mechanism 23 includes a cloth strip pneumatic clamp 239 and a cloth strip pulling cylinder 230 for driving the cloth strip pneumatic clamp 239 to move backward, and one end of two cloth strips 238 away from the cloth strip plate 237 passes through two clamping fingers of the cloth strip pneumatic clamp 239. After each cleaning is completed, the cloth strip pneumatic clamp 239 tightens the cloth strip behind, and the cloth strip pulling cylinder 230 pulls the cloth strip backward for a certain distance, so that the cloth strip between the two cleaning claws 233 is a clean cloth strip.

[0037] The cleaning mechanism 23 further includes a cleaning liquid spray head 236 mounted on the cleaning bracket 231 and a cleaning liquid pump 235 for supplying cleaning liquid to the cleaning liquid spray head 236. The cleaning liquid spray head 236 is oriented toward a position between the two cleaning claws 233.

[0038] The method of using the present invention: The optical fiber in the optical fiber reel 11 passes through the optical fiber conduit 13 and is clamped by the optical fiber feeding pneumatic clamp 3. The initial clamping position of the optical fiber feeding pneumatic clamp 3 is located between the rear end pneumatic clamp 7 and the cutting pneumatic scissors 5. The feeding electric slide 1 drives the optical fiber feeding pneumatic clamp 3 to move forward, so that the optical fiber passes through the two coating cleaning devices 2. The rear end pneumatic clamp 7 and the front end pneumatic clamp 10 clamp the optical fiber and then descend. At the same time, the optical fiber feeding pneumatic clamp 3 resets backward, so that the optical fiber moves downward and is pressed against the optical fiber table 241 of the coating cleaning device 2. The coating of the optical fiber is removed by the two coating cleaning devices 2, and the cutting pneumatic scissors 5 can cut the optical fiber according to needs.

[0039] When the coating cleaning device 2 is working, the optical fiber is pressed against the optical fiber table 241 by the angle clamping cylinders 242 in the two optical fiber clamping mechanisms 24, and the stripping mechanism driving cylinder 25 drives the stripping mechanism 22 to move forward so that the optical fiber is located in the jaws of the stripping clamp, and the stripping clamp cylinder 224 controls the stripping clamp to close so that the stripping slot clamps the main optical fiber. The motor of the cleaning electric slide 21 drives the stripping mechanism 22 to move left and right along the optical fiber direction for two cycles to strip the coating from the optical fiber, leaving only the bare fiber; at this time, the stripped coating is still attached to the optical fiber, and the third step is required for cleaning. During cleaning, the stripping mechanism 22 is retracted backwards, and the cleaning electric slide 21 drives the cleaning mechanism 23 to move to the stripping position. The cleaning mechanism drives the cylinder 26 to drive the cleaning mechanism 23 forward, so that the optical fiber is located between the two cloth strips 238 between the two cleaning claws 233, and the cleaning pneumatic clamp 232 drives the two cleaning claws 233 to close, which can ensure that the cloth strip 238 fully wraps the optical fiber to be cleaned; to ensure that the optical fiber is clean, alcohol should be sprayed on the cloth strip; finally, the cleaning electric slide 21 drives the cleaning mechanism 23 to move left and right along the direction of the optical fiber for two cycles to complete the optical fiber cleaning action.

[0040] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An optical fiber supply system for an optical fiber fusion taper machine, characterized in that: The invention comprises a feeding electric slide (1) and two coating cleaning devices (2) arranged along the length direction of the feeding electric slide (1), wherein a pneumatic optical fiber feeding clamp (3) is installed on the slider of the feeding electric slide (1), a front end pneumatic clamp (10) and a front end downward pressure cylinder (9) for driving the front end pneumatic clamp (10) to rise and fall are installed at the front end of the feeding electric slide (1), a rear end pneumatic clamp (7) and a rear end downward pressure cylinder (6) for driving the rear end pneumatic clamp (7) to rise and fall are installed at the rear end of the feeding electric slide (1), and a cutting pneumatic scissors (5) and a cutting scissors forward cylinder (4) for driving the cutting pneumatic scissors (5) to move radially along the optical fiber (8) are installed between the rear end pneumatic clamp (7) and the coating cleaning device (2).

2. The optical fiber supply system for an optical fiber fusion taper machine according to claim 1, characterized in that: It also includes an optical fiber guide tube (13) located behind the rear pneumatic clamping jaw (7).

3. The optical fiber supply system for an optical fiber fusion taper machine according to claim 1, characterized in that: A feeding support arm (12) extending forward is fixedly connected to the slider of the feeding electric slide (1), and the optical fiber feeding pneumatic clamp (3) is fixedly connected to the front end of the feeding support arm (12).

4. The optical fiber supply system for an optical fiber fusion taper machine according to claim 1, characterized in that: The coating cleaning device (2) comprises two optical fiber clamping mechanisms (24) for clamping optical fibers and a cleaning electric slide (21) that moves along the length direction of the optical fibers. A stripping mechanism driving cylinder (25) and a cleaning mechanism driving cylinder (26) are mounted on the moving part of the cleaning electric slide (21). The stripping mechanism driving cylinder (25) is mounted on the stripping mechanism driving cylinder (22). The cleaning mechanism driving cylinder (26) is mounted on the cleaning mechanism driving cylinder (23). The cleaning mechanism (23) comprises a cleaning bracket (231) and a cleaning pneumatic clamping jaw (232) fixedly connected to the cleaning bracket (231). The two clamping fingers of the cleaning pneumatic clamping jaw (232) are both fixedly connected to a cleaning jaw (233). Two cloth strip racks (234) are mounted on the cleaning bracket (231). Two cloth strips (238) respectively bypass the two cloth strip racks (234) and enter between the two cleaning jaws (233).

5. The optical fiber supply system for an optical fiber fusion taper machine according to claim 4, characterized in that: The cleaning mechanism (23) further comprises two cloth strip discs (237) axially connected to the cleaning bracket (231), and two cloth strips (238) are respectively wound around the two cloth strip discs (237).

6. The optical fiber supply system for an optical fiber fusion taper machine according to claim 5, characterized in that: The cleaning mechanism (23) comprises a cloth strip pneumatic clamp (239) and a cloth strip pulling cylinder (230) for driving the cloth strip pneumatic clamp (239) to move, and one end of the two cloth strips (238) away from the cloth strip disc (237) passes through two clamping fingers of the cloth strip pneumatic clamp (239).

7. The optical fiber supply system for an optical fiber fusion taper machine according to claim 1, characterized in that: The cleaning mechanism (23) further comprises a cleaning liquid spray head (236) mounted on the cleaning bracket (231) and a cleaning liquid pump (235) for supplying cleaning liquid to the cleaning liquid spray head (236).

8. The optical fiber supply system for an optical fiber fusion taper machine according to claim 1, characterized in that: The stripping mechanism (22) comprises a stripping clamp and a stripping clamp cylinder (224) for driving the stripping clamp to open and close.

9. The optical fiber supply system for an optical fiber fusion taper machine according to claim 1, characterized in that: The optical fiber clamping mechanism (24) comprises an optical fiber table (241) and an angle clamping cylinder (242) for pressing the optical fiber onto the optical fiber table (241).

10. The optical fiber supply system for an optical fiber fusion taper machine according to claim 9, characterized in that: The optical fiber platform (241) is fixedly connected with optical fiber guide plates (243) located on both sides of the pressing block of the corner clamping cylinder (242), and the optical fiber guide plates (243) are provided with V-shaped guide grooves.

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