Automatic mold penetrating device for optical fiber

Abstract

The utility model relates to an automatic mold penetrating device for an optical fiber, and the device comprises a coating mold which is used for coating a coating on the surface of the optical fiber when the optical fiber penetrates through the coating mold; a leading-in hole is formed in the center of the leading-in die, the leading-in hole is conical, the diameter of the leading-in hole is gradually reduced in the direction close to the coating die, and the optical fiber penetrates through the leading-in hole and then enters the coating die; an optical fiber; the two auxiliary traction wheels are symmetrically arranged, the auxiliary traction wheels are arranged on the side, away from the coating mold, of the leading-in mold, and an optical fiber penetrates through the space between the two auxiliary traction wheels; a lead; the pasting clamp is located on one side of the outlet end of the coating mold and used for clamping the lead and the optical fiber to be bonded together. According to the automatic mold penetrating device for the optical fiber, a traditional manual mold penetrating mode is changed, the perpendicularity of the optical fiber is controllable, the optical fiber can accurately enter a mold hole, mold penetrating, infrared induction automatic pasting, constant-speed traction and the like can be efficiently carried out, the drawing efficiency of the optical fiber is improved, and the strength of the optical fiber is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber production and manufacturing technology, and in particular to an automatic optical fiber threading device. Background Technology

[0002] Optical fiber is produced by heating and softening an optical fiber preform in an optical fiber drawing furnace. The end of the optical fiber preform melts at over 2000°C in the drawing furnace, its viscosity decreases, and it rapidly shrinks and thins under the action of surface tension. It is then drawn downwards into a thin filament by a traction device at a suitable speed and tension. Finally, after cooling, coating, and ultraviolet curing processes, the finished optical fiber is produced. Finally, the optical fiber is stored in an optical fiber reel by a winding device.

[0003] The drawing die is a mold used in the above-mentioned optical fiber drawing process. After the preform is heated and softened, it passes through the drawing die to obtain an optical fiber with a diameter that meets the requirements. Therefore, the accuracy of the drawing die affects the quality of optical fiber drawing.

[0004] Currently, most optical fiber manufacturers use wet-to-wet drawing and threading, with mold apertures around 200 micrometers. Manual threading is employed, controlling the bare fiber diameter to within 130±10 micrometers before threading. However, manual control of the bare fiber's perpendicularity and accurate alignment with the mold aperture is difficult. If the fiber is not inserted perpendicularly, it may bend or touch within the mold, leading to threading difficulties or even failure and mold blockage. This inevitably affects drawing efficiency and fiber strength. Therefore, researching an automated threading device and method is urgently needed. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problem that manual threading in the prior art is not only difficult to operate, but also easy to cause the optical fiber to come into contact with the inner wall of the mold, resulting in difficulty in threading.

[0006] To solve the above-mentioned technical problems, this utility model provides an automatic optical fiber threading device, comprising: a coating mold for coating a coating layer on the surface of the optical fiber when it passes through; an inlet mold installed at the entrance of the coating mold, wherein the inlet mold has an inlet hole at its center, the inlet hole being tapered and its diameter gradually decreasing towards the coating mold, the optical fiber passing through the inlet hole and entering the coating mold; an optical fiber; two auxiliary traction wheels symmetrically arranged, the auxiliary traction wheels being located on the side of the inlet mold away from the coating mold, the optical fiber passing between the two auxiliary traction wheels; a lead wire located on one side of the exit end of the coating mold; and an adhesive clamp located on one side of the exit end of the coating mold, the adhesive clamp being used to clamp and bond the lead wire and the optical fiber together.

[0007] In one embodiment of this utility model, the adhesive clamp is provided with a UV curing unit on the side away from the coating mold, and the UV curing unit is used to cure the adhesive between the lead wire and the optical fiber.

[0008] In one embodiment of this utility model, the UV-cured output end is provided with a steering wheel and a main traction system. The main traction system serves as the power source for optical fiber traction, and the optical fiber bypasses the steering wheel and connects to the main traction system.

[0009] In one embodiment of this utility model, the adhesive clamp includes two symmetrically arranged adhesive clamping blocks and two symmetrically arranged moving clamping blocks. The two symmetrically arranged adhesive clamping blocks and the two symmetrically arranged moving clamping blocks are arranged correspondingly. The adhesive clamping blocks are installed on the opposite surfaces of the moving clamping blocks. A lead wire and an optical fiber pass through the two symmetrically arranged adhesive clamping blocks, and the moving clamping blocks drive the adhesive clamping blocks to clamp or release the lead wire.

[0010] In one embodiment of this utility model, a semi-circular hole is provided on the end face of the adhesive clip opposite to the lead wire, and the semi-circular holes of the two symmetrically arranged adhesive clips together form a circular through hole, through which the lead wire passes.

[0011] In one embodiment of this utility model, an infrared sensor is provided between the auxiliary traction wheel and the guide mold, and the infrared sensor is used to sense the diameter of the optical fiber between the auxiliary traction wheel and the guide mold.

[0012] In one embodiment of this utility model, the automatic mold-wearing device further includes a radar chart, which is used to display the diameter of the infrared-sensed optical fiber.

[0013] In one embodiment of this utility model, the automatic molding device further includes an infrared sensing system, which is used to control the clamping or releasing of the adhesive clamp.

[0014] In one embodiment of this utility model, the infrared sensing system includes an infrared sensing module and a controller module. The infrared sensing module is connected to the input terminal of the controller module, and the output terminal of the controller module is connected to the adhesive clamp via a pneumatic motor. The infrared sensing module is used to sense optical fibers.

[0015] In one embodiment of this utility model, a hollow tube is provided at one end of the lead wire near the coating mold. The inner diameter of the hollow tube is larger than the outer diameter of the optical fiber. The inner wall of the hollow tube is coated with adhesive, and the adhesive inside the hollow tube is used to bond the lead wire to the optical fiber.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0017] The automatic fiber optic threading device described in this invention changes the traditional manual threading method. The perpendicularity of the fiber can be controlled and it can accurately enter the die hole. It can efficiently perform threading, infrared sensing automatic pasting, and uniform speed traction, thereby improving the fiber drawing efficiency and ensuring the fiber strength. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the automatic fiber optic threading device in a preferred embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the adhesive clamp in a preferred embodiment of the present invention.

[0021] Explanation of the reference numerals in the instruction manual: 1. Fiber optic cable; 2. Auxiliary traction wheel; 3. Inlet mold; 4. Coating mold; 5. Adhesive clamp; 5-1. Adhesive clamp; 5-2. Motion clamp; 6-1. Infrared sensor; 6-2. External sensing system; 7. Lead wire; 8. UV curing; 9. Steering wheel; 10. Main traction system; 11. Radar chart. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0023] Reference Figure 1As shown, the automatic optical fiber threading device of this utility model includes: a coating mold 4, which is used to coat the surface of the optical fiber with a coating layer when the optical fiber passes through; an inlet mold 3, which is installed at the entrance of the coating mold 4, and the inlet mold 3 has an inlet hole at its center. The inlet hole is tapered and its diameter gradually decreases along the direction close to the coating mold 4. The optical fiber passes through the inlet hole and enters the coating mold 4; an optical fiber 1; two auxiliary traction wheels 2, which are symmetrically arranged and are located on the side of the inlet mold 3 away from the coating mold 4. The optical fiber 1 passes between the two auxiliary traction wheels 2; a lead wire 7, which is located on one side of the exit end of the coating mold 4; and a bonding clamp 5, which is located on one side of the exit end of the coating mold 4. The bonding clamp 5 is used to clamp the lead wire 7 and the optical fiber 1 together. Among them, the optical fiber 1, auxiliary traction wheels 2, UV curing 8, steering wheel 9, and main traction system 10 are all modules in the prior art. The diameter of the inlet mold 3 decreases from top to bottom (i.e., it moves from away from the coating mold 4 towards the coating mold 4). The lower end of the inlet mold 3 is detachably fixed to the coating mold 4, which is adapted to it and has grooves and guide holes, by a fastening ring. The lower exit hole diameter of the inlet mold 3 is the same as the inlet hole diameter of the coating mold 4.

[0024] In the above structure, the adhesive clamp 5 is provided with a UV curing 8 on the side away from the coating mold 4. The UV curing 8 is used to cure the adhesive between the lead wire 7 and the optical fiber 1.

[0025] In the above structure, the output end of the UV curing 8 is provided with a steering wheel 9 and a main traction system 10. The main traction system 10 serves as the power for traction of the optical fiber 1, and the optical fiber 1 bypasses the steering wheel 9 and connects to the main traction system 10.

[0026] Reference Figure 2 As shown, the adhesive clamp 5 includes two symmetrically arranged adhesive clamping blocks 5-1 and two symmetrically arranged moving clamping blocks 5-2. The two symmetrically arranged adhesive clamping blocks 5-1 and two symmetrically arranged moving clamping blocks 5-2 are correspondingly arranged. The adhesive clamping blocks 5-1 are mounted on the opposite surfaces of the moving clamping blocks 5-2. A lead wire 7 and an optical fiber pass through the two symmetrically arranged adhesive clamping blocks 5-1, and the moving clamping blocks 5-2 drive the adhesive clamping blocks 5-1 to clamp or release the lead wire 7. A semi-circular hole is provided on the end face of the adhesive clamping block 5-1 opposite to the lead wire 7. The semi-circular holes of the two symmetrically arranged adhesive clamping blocks 5-1 together form a circular through hole, through which the lead wire 7 passes. The moving clamping blocks 5-2 are connected to the controller module.

[0027] In the above structure, an infrared sensor 6-1 is provided between the auxiliary traction wheel 2 and the guide mold 3. The infrared sensor 6-1 is used to sense the diameter of the optical fiber between the auxiliary traction wheel 2 and the guide mold 3. The automatic mold-threading device also includes a radar chart 11, which is used to display the diameter of the optical fiber sensed by the infrared sensor 6-1. The infrared sensor 6-1 senses the diameter of the optical fiber 1 and displays it on the radar chart 11. When the diameter of the optical fiber 1 reaches the 100-micrometer range, the optical fiber is pulled into the guide mold 3, passes through the coating mold 4, and is connected to the lead wire 7.

[0028] In the above structure, the automatic molding device further includes an infrared sensing system 6-2, which controls the clamping or releasing of the adhesive clamp 5. The infrared sensing system 6-2 includes an infrared sensing module and a controller module. The infrared sensing module is connected to the input terminal of the controller module, and the output terminal of the controller module is connected to the adhesive clamp 5 via a pneumatic motor. The infrared sensing module is used to sense the optical fiber. When the optical fiber 1 protrudes 10cm from the mold, the infrared sensing system 6-2 can sense the optical fiber 1 and then control the lead wire 7 to adhere to it.

[0029] In the above structure, the lead wire 7 has a hollow tube at one end near the coating mold 4. The inner diameter of the hollow tube is larger than the outer diameter of the optical fiber. The inner wall of the hollow tube is coated with adhesive, and the adhesive inside the hollow tube is used to bond the lead wire 7 to the optical fiber. After the optical fiber 1 exits the mold, it enters the hollow tube. The moving clamp 5-2 clamps the hollow tube in the circular space, facilitating the subsequent bonding of the optical fiber 1 to the lead wire 7.

[0030] The automatic fiber optic threading device of this utility model includes: an infrared sensing system and an auxiliary traction wheel 2, an inlet mold 3, a coating mold 4, a bonding clamp 5, and a main traction system 10 arranged along the fiber optic threading direction. The auxiliary traction wheel 2, the inlet mold 3, and the coating mold 4 are coaxial. An infrared sensing system is provided between the coating mold 4 and the main traction system 10. An infrared sensing system and a radar image are provided above the inlet mold 3. One end of the lead wire 7 is placed at the exit mold hole of the coating mold 4 and is coaxial with the fiber optic 1. The other end of the lead wire 7 is placed on the main traction system 10. The fiber optic 1 passes through the auxiliary traction wheel 2, the inlet mold 3, and the coating mold 4 in sequence. After the infrared sensing system senses that the fiber optic 1 has passed through the coating mold 4, it controls the bonding clamp 5 to clamp and bond the fiber optic 1 to the lead wire 7. The lead wire 7 pulls the fiber optic 1 forward.

[0031] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An automatic optical fiber threading device, characterized in that, include: Coating mold, which is used to coat the surface of an optical fiber with a coating as the optical fiber passes through it; An inlet mold is installed at the entrance of the coating mold, and an inlet hole is provided at the center of the inlet mold. The inlet hole is tapered and its diameter gradually decreases along the direction close to the coating mold. The optical fiber passes through the inlet hole and enters the coating mold. optical fiber; Two auxiliary traction wheels are symmetrically arranged, and the auxiliary traction wheels are located on the side of the inlet mold away from the coating mold, with an optical fiber passing between the two auxiliary traction wheels; The lead wire is located on one side of the coating mold exit end; A bonding clamp, located on one side of the coating mold exit end, is used to clamp and bond the lead wire and optical fiber together.

2. The automatic optical fiber threading device according to claim 1, characterized in that: The adhesive clamp is provided with a UV curing unit on the side away from the coating mold, which is used to cure the adhesive between the lead wire and the optical fiber.

3. The automatic optical fiber threading device according to claim 2, characterized in that: The UV-cured output end is equipped with a steering wheel and a main traction system. The main traction system serves as the power source for optical fiber traction, and the optical fiber bypasses the steering wheel and connects to the main traction system.

4. The automatic optical fiber threading device according to claim 1, characterized in that: The adhesive clamp includes two symmetrically arranged adhesive clamping blocks and two symmetrically arranged moving clamping blocks. The two symmetrically arranged adhesive clamping blocks and the two symmetrically arranged moving clamping blocks are arranged correspondingly. The adhesive clamping blocks are installed on the opposite surfaces of the moving clamping blocks. A lead wire and an optical fiber pass through the two symmetrically arranged adhesive clamping blocks, and the moving clamping blocks drive the adhesive clamping blocks to clamp or release the lead wire.

5. The automatic optical fiber threading device according to claim 4, characterized in that: The adhesive clip has a semi-circular hole on the end face opposite to the lead wire. The semi-circular holes of the two symmetrically arranged adhesive clips together form a circular through hole, through which the lead wire passes.

6. The automatic optical fiber threading device according to claim 1, characterized in that: An infrared sensor is provided between the auxiliary traction wheel and the guide mold. The infrared sensor is used to sense the diameter of the optical fiber between the auxiliary traction wheel and the guide mold.

7. The automatic optical fiber threading device according to claim 6, characterized in that: The automatic mold-wearing device also includes a radar chart, which is used to display the diameter of the infrared-sensing optical fiber.

8. The automatic optical fiber threading device according to claim 1, characterized in that: The automatic molding device also includes an infrared sensing system, which is used to control the clamping or releasing of the adhesive clamp.

9. The automatic optical fiber threading device according to claim 8, characterized in that: The infrared sensing system includes an infrared sensing module and a controller module. The infrared sensing module is connected to the input terminal of the controller module, and the output terminal of the controller module is connected to the adhesive clamp via a pneumatic motor. The infrared sensing module is used to sense optical fibers.

10. The automatic optical fiber threading device according to claim 1, characterized in that: The lead wire has a hollow tube at one end near the coating mold. The inner diameter of the hollow tube is larger than the outer diameter of the optical fiber. The inner wall of the hollow tube is coated with adhesive, and the adhesive inside the hollow tube is used to bond the lead wire to the optical fiber.

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