An auxiliary positioning device for an optical fiber draw process

Abstract

The utility model discloses a kind of auxiliary positioning devices for optical fiber wire drawing process, including optical fiber preform, fixed sleeve and positioning sleeve, the positioning sleeve middle is divided into two by first positioning half sleeve and second positioning half sleeve, and the one end of first positioning half sleeve and second positioning half sleeve is formed into positioning half pipe by reducing inward, and positioning half pipe is combined to form positioning pipe, and the fixed sleeve middle is divided into two by first fixed half sleeve and second fixed half sleeve, and the tail handle of optical fiber preform is inserted into fixed sleeve, and tail handle is protruded to form positioning ring at the place of positioning groove, and positioning ring is inserted into positioning groove. The utility model is simple in structure, and the insertion between positioning ring and positioning groove can position optical fiber preform axially, with the splicing between first fixed half sleeve and second fixed half sleeve, tail handle can be clamped, and with the closure of first positioning half sleeve, optical fiber preform can be blocked, avoid external impact, and increase safety.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber technology, specifically to an auxiliary positioning device for the optical fiber lead-in process. Background Technology

[0002] Currently, most optical fiber preforms have a tail shank structure at the end. During installation, the optical fiber preform needs to be positioned and lifted by a hoisting pipe, and then slowly moved downwards into the drawing furnace with the help of an electric cylinder. The bottom end of the hoisting pipe contacts the hemispherical structure, and the optical fiber preform only has the tail shank as a support surface. This makes the axis of the optical fiber preform prone to shaking, which makes it difficult to guarantee the quality of the optical fiber products. Furthermore, before moving it to the drawing furnace, there is no protective structure for the optical fiber preform, making it susceptible to damage due to collisions. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an auxiliary positioning device for the optical fiber preform process. The optical fiber preform can be fixed in the positioning sleeve by the fixing sleeve, and the positioning sleeve can provide protection for the optical fiber preform, so as to solve the problems mentioned in the background art.

[0004] This utility model is achieved through the following technical solution: an auxiliary positioning device for the optical fiber preform process, comprising an optical fiber preform, a fixing sleeve, and a positioning sleeve. The positioning sleeve is divided into two halves, consisting of a first positioning half and a second positioning half. One end of both the first and second positioning half narrows inward to form a positioning half-tube. The positioning half-tubes are combined to form a positioning tube. The fixing sleeve is disposed in the positioning tube. The fixing sleeve is divided into two halves, consisting of a first fixing half and a second fixing half. Both the first and second fixing half are provided with multiple arc-shaped grooves. Adjacent arc-shaped grooves are combined to form positioning grooves. The optical fiber preform is disposed in the positioning sleeve. The tail of the optical fiber preform is inserted into the fixing sleeve. The tail protrudes from the positioning groove to form a positioning ring. The positioning rings are inserted into the positioning grooves.

[0005] As a preferred technical solution, a first fixing plate is installed at one end of the second positioning half-sleeve, a cylinder is installed on the first fixing plate, a second fixing plate is installed at one end of the second fixing half-sleeve, and the piston rod of the cylinder passes through the first fixing plate and is fixedly connected to the second fixing connection.

[0006] As a preferred technical solution, both the first positioning half-set and the second positioning half-set have multiple arc-shaped support blocks installed inside. Adjacent support blocks are combined to form support rings. The inner rings of the support rings are chamfered and are in contact with the outer ring surface of the optical fiber preform.

[0007] As a preferred technical solution, the support rings are all made of high-strength plastic materials.

[0008] As a preferred technical solution, multiple hinges are installed on one side of the first positioning half-sleeve and the second positioning half-sleeve, and multiple half-rods are installed on the other side of the first positioning half-sleeve and the second positioning half-sleeve. Adjacent half-rods are combined to form studs, and each stud is threaded with a nut that presses the first positioning half-sleeve and the second positioning half-sleeve inward and fixes them.

[0009] As a preferred technical solution, the first fixed half-set has multiple positioning holes on its opposite end face, and the second fixed half-set has multiple positioning pins installed on its opposite end face, with the other end of each positioning pin inserted into a positioning hole.

[0010] As a preferred technical solution, a locking ring is fitted at one end of the first fixed half sleeve and the second fixed half sleeve, and the locking ring is threadedly connected to the first fixed half sleeve and the second fixed sleeve.

[0011] As a preferred technical solution, the ends of the first and second positioning half-sleeves furthest from the positioning half-pipe are both bent outward to form flanges, and the flanges are combined to form a connecting flange.

[0012] The beneficial effects of this utility model are as follows: This utility model has a simple structure. The optical fiber preform can be placed into the second positioning half-sleeve and contact the arc-shaped block. The tail of the optical fiber preform can be placed into the second fixed half-sleeve. The optical fiber preform can be axially positioned by the insertion between the positioning ring and the positioning groove. As the first fixed half-sleeve and the second fixed half-sleeve are spliced ​​together, the tail can be clamped. As the first positioning half-sleeve is closed, the optical fiber preform can be blocked, avoiding external impact and increasing safety. Furthermore, it can be directly fixed to the drawing furnace through the connecting flange to ensure axial stability. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the structure of this utility model after removing the first positioning half-set; Figure 4 This is a schematic diagram of the connection structure between the second fixed half-sleeve and the tail shank of this utility model.

[0015] The components are: 1. First positioning half-set; 2. Second positioning half-set; 3. Positioning tube; 4. First fixing plate; 5. Cylinder; 6. Flanged edge; 7. Stud; 8. Nut; 9. Optical fiber preform; 10. Arc block; 11. First fixing half-set; 12. Second fixing half-set; 13. Locking ring; 14. Tail handle; 15. Positioning ring; 16. Positioning post; 17. Second fixing plate. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0018] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses an auxiliary positioning device for the optical fiber preform process, comprising an optical fiber preform 9, a fixing sleeve, and a positioning sleeve. The positioning sleeve is divided into two parts, consisting of a first positioning half-sleeve 1 and a second positioning half-sleeve 2. One end of both the first positioning half-sleeve 1 and the second positioning half-sleeve 2 is narrowed inward to form a positioning half-tube. The positioning half-tubes are combined to form a positioning tube 3. The fixing sleeve is disposed in the positioning tube 3. The fixing sleeve is divided into two parts, consisting of a first fixing half-sleeve 11 and a second fixing half-sleeve 12. Both the first fixing half-sleeve 11 and the second fixing half-sleeve 12 are provided with multiple arc-shaped grooves. The positioning grooves are combined between adjacent arc-shaped grooves to form positioning grooves. The optical fiber preform 9 is disposed in the positioning sleeve. The tail shank 14 of the optical fiber preform 9 is inserted into the fixing sleeve. The tail shank 14 protrudes from the positioning groove to form a positioning ring 15. The positioning ring 15 is inserted into the positioning groove.

[0020] In this embodiment, a first fixing plate 4 is installed at one end of the second positioning half-sleeve 2, a cylinder 5 is installed on the first fixing plate 4, a second fixing plate 17 is installed at one end of the second fixing half-sleeve 12, and the piston rod of the cylinder 5 passes through the first fixing plate 4 and is fixedly connected to the second fixing connection.

[0021] In this embodiment, multiple arc-shaped support blocks are installed inside the first positioning half-set 1 and the second positioning half-set 2. Adjacent support blocks are combined to form a support ring. The inner ring of the support ring is chamfered and is in contact with the outer ring surface of the optical fiber preform 9. The chamfer reduces friction with the optical fiber preform.

[0022] In this embodiment, the support rings are all made of high-strength plastic material, which reduces hardness compared to metal, thereby reducing the probability of fiber preform breakage.

[0023] In this embodiment, multiple hinges are installed on one side of the first positioning half-sleeve 1 and the second positioning half-sleeve 2, and multiple half rods are installed on the other side of the first positioning half-sleeve 1 and the second positioning half-sleeve 2. Adjacent half rods are combined to form studs 7, and each stud 7 is threaded with a nut 8 that presses the first positioning half-sleeve 1 and the second positioning half-sleeve 2 inward and fixes them.

[0024] In this embodiment, the first fixed half-sleeve 11 is provided with multiple positioning holes on the opposite end face, and the second fixed half-sleeve 12 is provided with multiple positioning posts 16 on the opposite end face. The other end of each positioning post 16 is inserted into the positioning hole. The first fixed half-sleeve and the second fixed half-sleeve can be positioned by the insertion between the positioning post and the positioning hole, thus avoiding misalignment. The diameter of the fixed sleeve matches the inner diameter of the support ring. As the piston rod on the cylinder extends, it can push the fixed sleeve and the optical fiber preform downward. After the fixed sleeve enters the positioning sleeve, the outer ring surface of the positioning sleeve can contact the inner ring surface of the arc block, and it can still center and position it to ensure its stability.

[0025] In this embodiment, a locking ring 13 is fitted onto one end of the first fixed half sleeve 11 and the second fixed half sleeve 12. The locking ring 13 is threadedly connected to the first fixed half sleeve 11 and the second fixed half sleeve. The outer walls of the first fixed half sleeve and the second fixed half sleeve are provided with threads, which combine to form an external thread, so as to engage with the internal thread on the locking ring, thereby pressing the first fixed half sleeve and the second fixed half sleeve inward.

[0026] In this embodiment, the ends of the first positioning half-sleeve 1 and the second positioning half-sleeve 2 that are away from the positioning half-pipe are both bent outward to form a flange 6, and the flanges 6 are combined to form a connecting flange.

[0027] When in use, first remove the nut, and open the first positioning half sleeve with the hinge as the center. Then rotate the locking ring to remove the locking ring from the fixed sleeve and put it on the piston rod of the cylinder. At this time, the first fixed half sleeve can be removed from the second fixed half sleeve. After the above is completed, the optical fiber preform can be placed into the second positioning half-sleeve and make the optical fiber preform contact with the inner ring surface of the arc block. The tail shank of the optical fiber preform is placed into the second fixed half-sleeve, and the positioning ring on the tail plate is inserted into the positioning groove. The optical fiber preform can be axially positioned by the insertion between the positioning ring and the positioning groove. As the first fixed half-sleeve and the second fixed half-sleeve close again, the tail shank can be clamped, and the locking ring can be rotated again so that the locking ring can be threaded to the outside of the fixed sleeve and press the first fixed half-sleeve and the second fixed half-sleeve inward. As the first positioning half-set closes, the arc-shaped blocks can be combined to form a support ring, which can center and position the optical fiber preform. The positioning sleeve can cover the outside of the optical fiber preform, increasing safety during movement and transportation and preventing external impacts. As the positioning sleeve is raised, the connecting flange can be vertically fixed to the feed end of the drawing furnace by bolts to ensure axial stability.

[0028] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. An auxiliary positioning device for the optical fiber pre-threading process, characterized in that: The device includes an optical fiber preform (9), a fixing sleeve, and a positioning sleeve. The positioning sleeve is divided into two parts, consisting of a first positioning half-sleeve (1) and a second positioning half-sleeve (2). One end of the first positioning half-sleeve (1) and the second positioning half-sleeve (2) are both narrowed inward to form a positioning half-tube. The positioning half-tubes are combined to form a positioning tube (3). The fixing sleeve is placed in the positioning tube (3). The fixing sleeve is divided into two parts, consisting of a first fixing half-sleeve (11) and a second fixing half-sleeve (12). The first fixing half-sleeve (11) and the second fixing half-sleeve (12) are each provided with multiple arc-shaped grooves. The adjacent arc-shaped grooves are combined to form positioning grooves. The optical fiber preform (9) is placed in the positioning sleeve. The tail shank (14) of the optical fiber preform (9) is inserted into the fixing sleeve. The tail shank (14) protrudes from the positioning groove to form a positioning ring (15). The positioning rings (15) are all inserted into the positioning grooves.

2. The auxiliary positioning device for the optical fiber pre-threading process according to claim 1, characterized in that: The first fixing plate (4) is installed at one end of the second positioning half-sleeve (2), and the cylinder (5) is installed on the first fixing plate (4). The second fixing plate (17) is installed at one end of the second fixing half-sleeve (12). The piston rod of the cylinder (5) passes through the first fixing plate (4) and is fixedly connected to the second fixing connection.

3. The auxiliary positioning device for the optical fiber pre-threading process according to claim 1, characterized in that: The first positioning half-set (1) and the second positioning half-set (2) are each equipped with multiple arc-shaped support blocks. Adjacent support blocks are combined to form support rings. The inner rings of the support rings are chamfered and are in contact with the outer ring surface of the optical fiber preform (9).

4. The auxiliary positioning device for the optical fiber pre-threading process according to claim 3, characterized in that: The support rings are all made of high-strength plastic material.

5. The auxiliary positioning device for the optical fiber pre-threading process according to claim 1, characterized in that: Multiple hinges are installed on one side of the first positioning half-sleeve (1) and the second positioning half-sleeve (2), and multiple half rods are installed on the other side of the first positioning half-sleeve (1) and the second positioning half-sleeve (2). Adjacent half rods are combined to form studs (7), and each stud (7) is threaded with a nut (8) that presses the first positioning half-sleeve (1) and the second positioning half-sleeve (2) inward to fix them.

6. The auxiliary positioning device for the optical fiber pre-threading process according to claim 1, characterized in that: The first fixed half-set (11) has multiple positioning holes on its opposite end face, and the second fixed half-set (12) has multiple positioning pins (16) installed on its opposite end face. The other end of each positioning pin (16) is inserted into the positioning hole.

7. The auxiliary positioning device for the optical fiber pre-threading process according to claim 1, characterized in that: A locking ring (13) is fitted at one end of the first fixed half sleeve (11) and the second fixed half sleeve (12), and the locking ring (13) is threadedly connected to the first fixed half sleeve (11) and the second fixed sleeve.

8. The auxiliary positioning device for the optical fiber pre-threading process according to claim 1, characterized in that: The ends of the first positioning half-sleeve (1) and the second positioning half-sleeve (2) that are away from the positioning half-pipe are both bent outward to form a flange (6), and the flanges (6) are combined to form a connecting flange.

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