Easily-perforated single-mode mother rod for panda-type polarization maintaining optical fiber

Abstract

The utility model discloses an easy-to-open single-mode mother rod for a panda type polarization maintaining optical fiber, and relates to the technical field of prefabricated rods. The utility model comprises a mother rod body, two stress mother rods and two tooling rod bodies, the mother rod body comprises an outer glass tube layer, the two tooling rod bodies are arranged in the outer glass tube layer, and a cladding is formed in the area between the outer glass tube layer and the two tooling rod bodies through MCVD (modified chemical vapor deposition) process. The two novel tool rod bodies are arranged in the forming process of the mother rod body, so that the formed tool rod bodies belong to the state of being embedded in the mother rod body, and during follow-up trepanning, trepanning and stretching can be carried out at the same time, so that the walking stability of a drill rod can be ensured, and the working efficiency of the drill rod is improved. Meanwhile, the long guide groove is formed in the position of the original metal core rod, so that the metal core rod can be stably guided, the walking straightness of the drill rod is further ensured, and the problems of insufficient punching stability, insufficient efficiency and insufficient straightness caused by overlarge length of the preform rod body are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of preformed rods, in particular to a single-mode mother rod which is easy to open a hole for a panda-type polarization-maintaining optical fiber. Background Art

[0002] For the processing of the panda-type polarization-maintaining optical fiber preform, which consists of a mother rod body and two stress mother rods, two side holes need to be set on the mother rod body, and the stress mother rods are subsequently embedded and installed in the side holes.

[0003] Since the preform rod is relatively long, the drill rod used for drilling the corresponding hole is too long, so drilling a hole on the mother rod is difficult, which affects the production effect and efficiency of the preform rod. At the same time, the straightness and stability of the hole must be high, and the existing mother rod body structure cannot effectively facilitate the drilling, thus affecting the quality and processing efficiency of the preform rod.

[0004] Therefore, designing a single-mode mother rod that can facilitate subsequent hole opening is a problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The utility model aims to provide a single-mode mother rod which is easy to open a hole for a panda-type polarization-maintaining optical fiber. Two novel tooling rod bodies are arranged during the molding process of the mother rod body, so that the tooling rod body is pre-buried in the mother rod body after molding. When opening holes subsequently, holes can be punched by stretching while opening holes, thereby ensuring the stability of the movement of a drill rod. At the same time, a long guide groove is formed at the position of the original metal core rod, which can stably guide the metal core rod, further ensuring the straightness of the movement of the drill rod, and avoiding the problems of insufficient drilling stability, insufficient efficiency and insufficient straightness caused by the excessive length of the preform body.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a single-mode mother rod with easy opening for panda-type polarization-maintaining optical fiber, comprising a mother rod body and two tooling rod bodies;

[0008] The mother rod body comprises an outer glass tube layer, the two tooling rod bodies are arranged in the outer glass tube layer, and the area between the outer glass tube layer and the two tooling rod bodies is provided with a cladding layer;

[0009] The two tooling rods are fixed to the mother rod body through the cladding and are symmetrical about the axis center of the mother rod body, and both ends of the tooling rod extend to the outside of both ends of the tooling rod body;

[0010] The tooling rod body comprises a metal core rod, a casing is fixed to the side surface of the metal core rod, the casing is a high melting point non-metallic tube body, and a drill rod connector and a rod stripping connector are respectively provided at both ends of the metal core rod;

[0011] The drill rod connecting piece is a screw structure, and the drill rod connecting piece is integrated with the metal core rod;

[0012] The rod-removing connector comprises an end shaft, a rotating rod is arranged at the tail end of the end shaft, and the rotating rod penetrates the metal core rod and is rotatably matched with the metal core rod.

[0013] Furthermore, it also includes a drill rod body, wherein a threaded opening is provided at the end of the drill rod body, the drill rod connector is threadedly matched with the threaded opening, and the tightening rotation direction of the drill rod connector and the threaded opening is opposite to the rotation direction of the drill rod body.

[0014] Furthermore, it also includes a stretching device, which is a winch. One end of the pull rope of the stretching device is provided with a shaft clamp, and the rod-removing connector is connected to the end of the pull rope of the stretching device through the shaft clamp.

[0015] Furthermore, a plurality of mounting openings are provided at one end of the sleeve and one end of the metal core rod, and the sleeve is fixed to the metal core rod through fasteners and the mounting openings, and the fasteners and the mounting openings are located outside the mother rod body.

[0016] Furthermore, the drilling diameter of the drill rod body is larger than the outer diameter of the casing.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model arranges two new tooling rod bodies during the forming process of the mother rod body, so that the tooling rod bodies are pre-buried in the mother rod body after forming. When drilling holes subsequently, the drill rod can be connected to the metal core rod, and then the tail end of the metal core rod is connected to the stretching device. The holes can be drilled while being stretched, thereby ensuring the stability of the drill rod. At the same time, a long guide groove is formed at the position of the original metal core rod, which can stably guide the metal core rod and further ensure the straightness of the drill rod, thereby ensuring the drilling effect and efficiency, and avoiding the problems of insufficient drilling stability, insufficient efficiency and insufficient straightness caused by the excessive length of the preform body.

[0019] 2. The utility model uses a telescopic connection between the metal core rod and the casing. After the metal core rod is pulled out, the drilling capacity required when the drill rod is opened is greatly reduced, that is, the position of the original metal core rod does not need to be drilled, thereby reducing the load on the drill rod, improving work efficiency while ensuring the work efficiency and quality of the drill rod.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the mother rod body, the drill rod body and the stretching device of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1-mother rod body, 2-tool rod body, 3-drill rod body, 4-stretching device, 101-outer glass tube layer, 102-cladding, 201-metal core rod, 202-casing, 203-drill rod connecting piece, 204-rod removal connector, 205-end shaft, 206-rotating rod, 207-installation port, 301-threaded port, 401-shaft clamp. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-2 As shown, the utility model is a single-mode mother rod with easy opening for panda-type polarization-maintaining optical fiber, comprising a mother rod body 1 and two tooling rod bodies 2;

[0028] The mother rod body 1 includes an outer glass tube layer 101, two tooling rod bodies 2 are arranged in the outer glass tube layer 101, and a cladding layer 102 is arranged in the area between the outer glass tube layer 101 and the two tooling rod bodies 2;

[0029] The two tooling rod bodies 2 are fixed to the mother rod body 1 through the cladding 102 and are symmetrical about the axis center of the mother rod body 1. Both ends of the tooling rod body 2 extend to the outside of both ends of the tooling rod body 2.

[0030] The tooling rod body 2 includes a metal core rod 201, a casing 202 is fixed to the side of the metal core rod 201, and the casing 202 is a high melting point non-metallic tube body. The two ends of the metal core rod 201 are respectively provided with a drill rod connector 203 and a rod removal connector 204;

[0031] The drill rod connecting piece 203 is a screw structure, and the drill rod connecting piece 203 is integrated with the metal core rod 201;

[0032] The stripping rod connector 204 includes an end shaft 205 , and a rotating rod 206 is disposed at the tail end of the end shaft 205 . The rotating rod 206 penetrates the metal core rod 201 and rotates with the metal core rod 201 .

[0033] Among them Figure 2 As shown, it also includes a drill rod body 3, a threaded opening 301 is provided at the end of the drill rod body 3, the drill rod connector 203 is threadedly matched with the threaded opening 301, and the tightening rotation direction of the drill rod connector 203 and the threaded opening 301 is opposite to the rotation direction of the drill rod body 3.

[0034] Among them Figure 2 As shown, it also includes a stretching device 4, which is a winch. One end of the pull rope of the stretching device 4 is provided with a shaft clamp 401, and the rod-removing connector 204 is connected to the end of the pull rope of the stretching device 4 through the shaft clamp 401.

[0035] Among them Figure 1-2 As shown, a plurality of mounting openings 207 are provided at one end of the sleeve 202 and one end of the metal core rod 201 . The sleeve 202 is fixed to the metal core rod 201 through fasteners and the mounting openings 207 . The fasteners and the mounting openings 207 are located outside the mother rod body 1 .

[0036] The drilling diameter of the drill rod body 3 is larger than the outer diameter of the casing 202 .

[0037] The working principle of the utility model is:

[0038] The hole opening method comprises the following steps:

[0039] SS01 fixes the mother rod body 1 equipped with the tooling rod body 2 on the drilling machine;

[0040] SS02 removes the fasteners connecting the casing 202 and the metal core rod 201, and connects the drill pipe connector 203 at the end of the metal core rod 201 to the end of the drill pipe body 3;

[0041] SS03 connects the stripping connector 204 of the metal mandrel 201 to the drawstring of the stretching device 4, and drives the stretching device 4 to put the drawstring in a taut state;

[0042] SS04 starts the drill pipe body 3 to move step by step toward the mother rod body 1 to open a hole, and the synchronous stretching device 4 stretches the metal core rod 201 at the same speed. The metal core rod 201 slides and guides along the casing 202 with the stretching and the thrust of the drill pipe body 3;

[0043] SS05 When the drill pipe body 3 passes through the other end of the mother rod body 1, the hole opening is completed. At this time, the casing 202 and the partial cladding 102 outside the casing 202 are drilled to form a stress mother rod hole.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A single-mode mother rod with easy opening for a Panda-type polarization-maintaining optical fiber, comprising a mother rod body (1), characterized in that: It also includes two tooling rod bodies (2); The mother rod body (1) comprises an outer glass tube layer (101), the two tooling rod bodies (2) are arranged inside the outer glass tube layer (101), and a cladding layer (102) is provided in the area between the outer glass tube layer (101) and the two tooling rod bodies (2); The two tooling rod bodies (2) are fixed to the mother rod body (1) through the cladding (102) and are symmetrical about the axis center of the mother rod body (1), and both ends of the tooling rod body (2) extend to the outside of both ends of the tooling rod body (2); The tooling rod body (2) comprises a metal core rod (201), a casing (202) is fixed on the side surface of the metal core rod (201), the casing (202) is a high melting point non-metallic tube, and a drill rod connector (203) and a rod removal connector (204) are respectively provided at both ends of the metal core rod (201); The drill rod connecting piece (203) is a screw structure, and the drill rod connecting piece (203) is integrated with the metal core rod (201); The rod-removing connector (204) comprises an end shaft (205), and a rotating rod (206) is provided at the tail end of the end shaft (205). The rotating rod (206) penetrates the metal core rod (201) and is rotatably matched with the metal core rod (201).

2. The single-mode mother rod with easy opening for Panda-type polarization-maintaining optical fiber according to claim 1, characterized in that: It also comprises a drill rod body (3), the end of the drill rod body (3) is provided with a threaded opening (301), the drill rod connecting piece (203) is threadedly matched with the threaded opening (301), and the tightening rotation direction of the drill rod connecting piece (203) and the threaded opening (301) is opposite to the rotation direction of the drill rod body (3).

3. The single-mode mother rod with easy opening for Panda-type polarization-maintaining optical fiber according to claim 1, characterized in that: It also comprises a stretching device (4), wherein the stretching device (4) is a winch, and a shaft clamp (401) is provided at one end of the pull rope of the stretching device (4), and the rod-removing connector (204) is connected to the end of the pull rope of the stretching device (4) via the shaft clamp (401).

4. The single-mode mother rod with easy opening for Panda-type polarization-maintaining optical fiber according to claim 1, characterized in that: A plurality of mounting openings (207) are provided at one end of the sleeve (202) and one end of the metal core rod (201); the sleeve (202) is fixed to the metal core rod (201) via fasteners and the mounting openings (207); and the fasteners and the mounting openings (207) are located outside the mother rod body (1).

5. The single-mode mother rod with easy opening for Panda-type polarization-maintaining optical fiber according to claim 2, characterized in that: The drilling diameter of the drill rod body (3) is larger than the outer diameter of the casing (202).

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