Optical fiber ring low-stress curing device and method

Abstract

The invention relates to an optical fiber ring curing device, in particular to an optical fiber ring low-stress curing device and method, and aims at solving the problems that an existing optical fiber ring curing method is low in overall curing efficiency, curing uniformity is difficult to guarantee, meanwhile, curing stress is large, and the performance of an optical fiber ring is reduced. The device comprises a curing tool arranged in a curing box, wherein the curing tool comprises a rotating shaft of which one end is connected with a rotary driving mechanism, two flanges which sleeve and are connected to the rotating shaft, and two semicircular split frameworks and two annular baffles which sleeve the rotating shaft in an empty manner; the two split frameworks form a circular ring-shaped assembly; the two sides of the annular assembly are connected with the inner sides of the two baffles correspondingly. The outer sides of the two baffles are each provided with an annular first curing lamp belt, and the inner sides of the two flanges are connected with the outer sides of the two baffles correspondingly. A cylindrical second curing lamp strip is arranged on the inner side wall of the annular assembly; and a third curing lamp strip is arranged between the two baffles.

Description

Technical Field

[0001] The invention relates to an optical fiber ring curing device, and in particular to an optical fiber ring low-stress curing device and method. Background Art

[0002] Fiber optic gyroscope is a fully solid-state inertial measurement instrument based on the Sagnac effect. It has the advantages of impact resistance, high sensitivity, long life, large dynamic range and short start-up time. It has been widely used in aerospace, aviation, navigation and other fields. The fiber optic ring is the core component of the fiber optic gyroscope. Its quality directly affects the performance of the fiber optic gyroscope. The quality of the fiber optic ring curing process directly affects the quality of the fiber optic ring.

[0003] The existing fiber optic ring curing method usually places the wound fiber optic ring together with the winding tooling into a curing box of a curing device for curing. The existing fiber optic ring curing device is mainly made of aluminum alloy. Figure 1 Since the curing lamp 21 in the curing box is fixed at one side of the outer surface 101 of the optical fiber ring, as the rotating shaft 9 rotates, the ultraviolet light of the curing lamp 21 can only irradiate a portion of the outer surface 101 of the optical fiber ring under the ultraviolet light band, so that the optical fiber ring 1 during the curing process is gradually cured from the outer surface 101 of the optical fiber ring to the inner surface 102 of the optical fiber ring, which can easily lead to over-curing of the outer surface 101 of the optical fiber ring and insufficient curing of the inner surface 102 of the optical fiber ring, and the overall curing efficiency is low, making it difficult to ensure the uniformity of curing, which in turn leads to large curing stress and deterioration of the performance of the optical fiber ring. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the existing optical fiber ring curing method is very likely to cause excessive curing of the outer surface of the optical fiber ring, insufficient curing of the inner surface of the optical fiber ring, and low overall curing efficiency, making it difficult to ensure the uniformity of curing, and is also likely to cause large curing stress, which reduces the performance of the optical fiber ring. A low-stress curing device and method for an optical fiber ring are provided to solve the problem that the existing optical fiber ring curing method is very likely to cause excessive curing of the outer surface of the optical fiber ring, insufficient curing of the inner surface of the optical fiber ring, and low overall curing efficiency, making it difficult to ensure the uniformity of curing.

[0005] To achieve the above purpose, the technical solution provided by the present invention is:

[0006] A low-stress curing device for an optical fiber ring comprises a curing box, wherein a rotating drive mechanism is arranged in the curing box, and the special features thereof are:

[0007] It also includes a curing tooling arranged in the curing box, the curing tooling including a rotating shaft connected to the rotary drive mechanism at one end, two flanges sleeved and connected to the rotating shaft, and two semicircular split frames and two annular baffles sleeved on the rotating shaft;

[0008] The two split frames constitute a circular ring-shaped component; the two sides of the circular ring-shaped component are respectively connected to the inner sides of the two baffles; the outer sides of the two baffles are provided with a circular first curing light belt, and the inner sides of the two flanges are respectively connected to the outer sides of the two baffles; the positions of the two baffles where the first curing light belt is installed are made of transparent material;

[0009] A cylindrical second curing light belt is arranged on the inner side wall of the annular component; a third curing light belt is arranged between the two baffles, and the third curing light belt is hollowly sleeved on the annular component;

[0010] An optical fiber ring is placed between the third curing light strip and the annular component.

[0011] Furthermore, an annular groove is provided on the outer side of each of the baffles, and the first curing light strip is arranged in the annular groove.

[0012] Furthermore, at least three countersunk holes and at least three first threaded holes evenly distributed around the circumference are arranged on the convex ring near the center of the circle on each baffle plate, the countersunk holes and the first threaded holes are arranged alternately, and the center of each baffle plate is a limiting through hole;

[0013] The middle part of the side of the annular component is provided with an annular raised strip, and the side of the annular raised strip is provided with second threaded holes of the same number and corresponding positions as the first threaded holes, and the annular component and the two baffles are connected through the first threaded holes, the second threaded holes and the threaded connector;

[0014] The two sides of the annular component are respectively arranged in the limiting through holes of the two baffles, and the annular raised strip is located between the two baffles.

[0015] Furthermore, the plurality of countersunk holes are used for connection with flanges.

[0016] Furthermore, the materials of the two split frames and the baffle are both polymethyl methacrylate.

[0017] Furthermore, the number of the countersunk holes and the number of the first threaded holes are both four.

[0018] At the same time, the present invention also provides a method for low-stress curing of an optical fiber ring, which uses the above-mentioned low-stress curing device for an optical fiber ring, and its special feature is that it includes the following steps:

[0019] Step 1: Install a flange on the rotating shaft, and then connect the end of the rotating shaft close to the flange to the rotating drive mechanism in the curing box;

[0020] Step 2: Install the two first curing light strips to the preset positions of the two baffles respectively;

[0021] Step 3, assemble the two split frames into a circular ring assembly, and then connect the two baffles with the first curing light strip to the circular ring assembly;

[0022] Step 4, winding the optical fiber on the outer wall of the annular component to form an optical fiber ring, and then installing the second curing light belt on the inner wall of the annular component; installing the third curing light belt between the two baffles;

[0023] Step 5, install the combination of two baffles, two first curing light strips, the second curing light strip, the third curing light strip, the annular component and the optical fiber ring onto the rotating shaft, and then install another flange, and connect the two flanges to the two baffles respectively;

[0024] Step 6: Start the rotary drive mechanism to rotate the shaft;

[0025] Step 7, turning on the first curing light belt, the second curing light belt and the third curing light belt, and controlling the rotating shaft to rotate at a preset angular velocity through the rotary drive mechanism, so as to uniformly cure each surface of the optical fiber ring for a preset time;

[0026] Step 8, turning off the first curing light belt, the second curing light belt and the third curing light belt, and stopping the rotation drive mechanism;

[0027] Step 9. Remove the flange on the side away from the rotating drive mechanism, remove the two baffles, the two first curing light belts, the second curing light belts, the third curing light belts, the annular component and the optical fiber ring from the rotating shaft, then remove the second curing light belt and the third curing light belt and take out the optical fiber ring to complete the low-stress curing of the optical fiber ring; if low-stress curing of the next optical fiber ring is required, return to step 3 and then perform the subsequent steps in sequence.

[0028] Furthermore, the steps of installing the two first curing light strips to the preset positions of the two baffles in step 2 are as follows:

[0029] Install the two first curing light strips into the annular grooves on the outer sides of the two baffles respectively by gluing;

[0030] The step 4 of installing the second curing light strip on the inner side wall of the annular component specifically includes: installing the second curing light strip on the inner side wall of the annular component by gluing;

[0031] The step 4 of installing the third curing light strip between the two baffles specifically includes: installing the third curing light strip between the two baffles by gluing.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The optical fiber ring low stress curing device provided by the present invention, the cooperation of the first curing light belt, the second curing light belt and the third curing light belt can make each surface of the optical fiber ring receive ultraviolet light curing uniformly at the same time, so that the curing is more uniform, avoiding the phenomenon of over-curing of the outer surface of the optical fiber ring and insufficient curing of other surfaces, and finally effectively reducing the stress introduced in the curing process, and effectively improving the curing quality of the optical fiber ring;

[0034] 2. The optical fiber ring low stress curing device provided by the present invention has a split frame and a baffle made of polymethyl methacrylate (PMMA). PMMA has the advantages of high transparency, low cost, low density, high plasticity and easy processing;

[0035] 3. The optical fiber ring low-stress curing method provided by the present invention can effectively reduce the curing time and improve the curing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the curing structure of an existing optical fiber ring curing device;

[0037] Figure 2 It is a schematic diagram of the explosion structure of an embodiment of the optical fiber ring low stress curing device of the present invention;

[0038] Figure 3 It is a schematic diagram of the structure of two split skeletons in an embodiment of the optical fiber ring low stress curing device of the present invention;

[0039] Figure 4 It is a structural schematic diagram of a baffle in an embodiment of the optical fiber ring low stress curing device of the present invention;

[0040] Figure 5 It is a schematic diagram of the structure of the rotating shaft and the flange in the embodiment of the optical fiber ring low stress curing device of the present invention;

[0041] Figure 6 It is a cross-sectional view of the split frame, baffle, first curing light belt, second curing light belt and third curing light belt of the embodiment of the optical fiber ring low stress curing device of the present invention when the optical fiber ring is assembled;

[0042] Description of reference numerals:

[0043] 1-fiber optic ring; 101-outer surface of fiber optic ring; 102-inner surface of fiber optic ring; 21-curing light; 3-split frame, 31-annular raised strip, 301-second threaded hole; 4-baffle, 401-annular groove, 402-convex ring, 403-countersunk hole, 404-first threaded hole, 405-limiting through hole; 5-first curing light strip; 6-flange; 7-second curing light strip; 8-third curing light strip; 9-rotating shaft. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0045] A low stress curing device for optical fiber rings, see Figures 2 to 6 , including a curing box, wherein a rotary drive mechanism is arranged in the curing box, and also including a curing tooling arranged in the curing box. The curing tooling includes a rotating shaft 9 connected to the rotary drive mechanism at one end, two flanges 6 sleeved and connected to the rotating shaft 9, and two semicircular split frames 3 and two annular baffles 4 sleeved on the rotating shaft 9;

[0046] Two split frames 3 form a circular ring-shaped component; the two sides of the circular ring-shaped component are respectively connected to the inner sides of the two baffles 4; the outer sides of the two baffles 4 are provided with a circular first curing light belt 5, and the inner sides of the two flanges 6 are respectively connected to the outer sides of the two baffles 4;

[0047] A cylindrical second curing light belt 7 is arranged on the inner side wall of the annular component; a third curing light belt 8 is arranged between the two baffles 4, and the third curing light belt 8 is hollowly sleeved on the annular component;

[0048] The optical fiber ring 1 is placed between the third curing light belt 8 and the annular component. An annular groove 401 is provided on the outer side of the baffle 4, and the first curing light belt 5 is arranged in the annular groove 401.

[0049] Four countersunk holes 403 and four first threaded holes 404 evenly distributed around the circumference are arranged on the convex ring 402 near the center of the circle on each baffle 4. The countersunk holes 403 and the first threaded holes 404 are arranged alternately, and the center of each baffle is a limiting through hole 405.

[0050] In order to increase the connection strength, the middle part of the side of the annular component is provided with an annular raised strip 31, and the side of the annular raised strip 31 is provided with second threaded holes 301 equal in number and corresponding in position to the first threaded holes 404, and the first threaded holes 404 and the second threaded holes 301 are used for connecting the annular component and the two baffles 4; the two sides of the annular component are respectively arranged in the limiting through holes 405 of the two baffles 4. The countersunk hole 403 is used for connecting with the flange 6.

[0051] In order to ensure light transmittance and evenly solidify the optical fiber ring 1, the two split frames 3 and the baffle 4 are made of polymethyl methacrylate acrylic.

[0052] At the same time, this embodiment also provides a method for low-stress curing of an optical fiber ring, using the above-mentioned low-stress curing device for an optical fiber ring, comprising the following steps:

[0053] Step 1, install a flange 6 on the rotating shaft 9, and then connect the end of the rotating shaft 9 close to the flange 6 to the rotating drive mechanism in the curing box;

[0054] Step 2: Install the two first curing light strips 5 into the annular grooves 401 on the outer sides of the two baffles 4 by gluing them respectively;

[0055] Step 3, assemble the two split frames 3 into a circular ring assembly, and then connect the two baffles 4 with the first curing light strip 5 to the circular ring assembly;

[0056] Step 4, wind the optical fiber on the outer wall of the annular component to form an optical fiber ring 1, and then install the second curing light strip 7 on the inner wall of the annular component by gluing; install the third curing light strip 8 between the two baffles 4 by gluing;

[0057] Step 5, install the combination of two baffles 4, two first curing light strips 5, second curing light strip 7, third curing light strip 8, annular components and optical fiber ring 1 onto the rotating shaft 9, then install another flange 6, and connect the two flanges 6 to the two baffles 4 respectively;

[0058] Step 6: Start the rotary drive mechanism to rotate the rotating shaft 9;

[0059] Step 7, turning on the first curing light belt 5, the second curing light belt 7 and the third curing light belt 8, and controlling the rotating shaft 9 to rotate at a preset angular velocity through the rotary drive mechanism, so as to uniformly cure each surface of the optical fiber ring 1 for a preset time;

[0060] Step 8, turning off the first curing light belt 5, the second curing light belt 7 and the third curing light belt 8, and stopping the rotation drive mechanism;

[0061] Step 9, disassemble the flange 6 on the side away from the rotating drive mechanism, remove the two baffles 4, the two first curing light belts 5, the second curing light belt 7, the third curing light belt 8, the annular component and the optical fiber ring 1 from the rotating shaft 9, then remove the second curing light belt 7, the third curing light belt 8 and take out the optical fiber ring 1 to complete the low-stress curing of the optical fiber ring 1; if low-stress curing of the next optical fiber ring 1 is required, return to step 3, and then perform the subsequent steps in sequence.

[0062] It should be noted that after the first use of the optical fiber ring low stress curing device, when it is reused, it is not necessary to remove the first curing light belt 5 from the baffle 4 during disassembly, but the second curing light belt 7 and the third curing light belt 8 must be removed, and the annular assembly must also be decomposed into two split frames 3. This is because the optical fiber ring 1 needs to be disassembled; at the same time, the rotating shaft 9 is always installed on the rotating drive mechanism in the curing box, which can greatly save time. Therefore, when repeating the curing step of the optical fiber ring, it is only necessary to return to step 3.

Claims

1. A low-stress curing device for an optical fiber ring, comprising a curing box, wherein a rotary drive mechanism is provided in the curing box, characterized in that: It also includes a curing tooling arranged in the curing box, the curing tooling including a rotating shaft (9) with one end connected to the rotating drive mechanism, two flanges (6) sleeved and connected to the rotating shaft (9), and two semicircular split frames (3) and two annular baffles (4) sleeved on the rotating shaft (9); The two split frames (3) form a circular ring-shaped component; the two sides of the circular ring-shaped component are respectively connected to the inner sides of the two baffles (4); the outer sides of the two baffles (4) are each provided with a circular ring-shaped first curing light belt (5); the inner sides of the two flanges (6) are respectively connected to the outer sides of the two baffles (4); the positions of the two baffles (4) where the first curing light belt (5) is installed are made of transparent material; A cylindrical second curing light strip (7) is arranged on the inner side wall of the annular component; a third curing light strip (8) is arranged between the two baffles (4), and the third curing light strip (8) is hollowly sleeved on the annular component; The optical fiber ring (1) is placed between the third curing light strip (8) and the annular component.

2. The optical fiber ring low stress curing device according to claim 1, characterized in that: An annular groove (401) is provided on the outer side of each baffle (4), and the first curing light strip (5) is arranged in the annular groove (401).

3. The optical fiber ring low stress curing device according to claim 2, characterized in that: The convex ring (402) near the center of each baffle (4) is provided with at least three countersunk holes (403) and at least three first threaded holes (404) evenly distributed around the circumference, the countersunk holes (403) and the first threaded holes (404) are alternately arranged, and the center of each baffle is a limiting through hole (405); The middle part of the side surface of the annular component is provided with an annular protrusion strip (31), and the side surface of the annular protrusion strip (31) is provided with second threaded holes (301) equal in number to the first threaded holes (404) and corresponding in position, and the annular component and the two baffles (4) are connected via the first threaded holes (404), the second threaded holes (301) and the threaded connector; The two sides of the annular component are respectively arranged in the limiting through holes (405) of the two baffles (4), and the annular raised strip (31) is located between the two baffles (4).

4. The optical fiber ring low stress curing device according to claim 3, characterized in that: The plurality of countersunk holes (403) are used for connection with the flange (6).

5. A low stress curing device for optical fiber ring according to any one of claims 1 to 4, characterized in that: The two split frames (3) and the baffle (4) are both made of polymethyl methacrylate.

6. The optical fiber ring low stress curing device according to claim 4, characterized in that: The number of the countersunk holes (403) and the number of the first threaded holes (404) are both four.

7. A method for low-stress curing of an optical fiber ring, using a low-stress curing device for an optical fiber ring as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1, a flange (6) is installed on the rotating shaft (9), and then the end of the rotating shaft (9) close to the flange (6) is connected to the rotating drive mechanism in the curing box; Step 2: installing the two first curing light strips (5) at the preset positions of the two baffles (4) respectively; Step 3, assembling the two split frames (3) into a circular ring-shaped assembly, and then connecting the two baffles (4) with the first curing light strip (5) to the circular ring-shaped assembly; Step 4, winding the optical fiber on the outer wall of the annular component to form an optical fiber ring (1), and then installing the second curing light strip (7) on the inner wall of the annular component; installing the third curing light strip (8) between the two baffles (4); Step 5, installing the assembly of two baffles (4), two first curing light strips (5), a second curing light strip (7), a third curing light strip (8), a circular ring-shaped component and an optical fiber ring (1) onto the rotating shaft (9), and then installing another flange (6), and connecting the two flanges (6) to the two baffles (4) respectively; Step 6: starting the rotary drive mechanism to rotate the rotating shaft (9); Step 7, turning on the first curing light strip (5), the second curing light strip (7) and the third curing light strip (8), and controlling the rotating shaft (9) to rotate at a preset angular velocity through the rotary drive mechanism, so as to uniformly cure each surface of the optical fiber ring (1) for a preset time period; Step 8, turning off the first curing light belt (5), the second curing light belt (7) and the third curing light belt (8), and stopping the rotation drive mechanism; Step 9, disassemble the flange (6) on the side away from the rotating drive mechanism, remove the two baffles (4), the two first curing light strips (5), the second curing light strip (7), the third curing light strip (8), the annular component and the optical fiber ring (1) from the rotating shaft (9), then remove the second curing light strip (7) and the third curing light strip (8) and take out the optical fiber ring (1), and complete the low-stress curing of the optical fiber ring (1); if low-stress curing of the next optical fiber ring (1) is required, return to step 3, and then perform the subsequent steps in sequence.

8. A method for low-stress curing of an optical fiber ring according to claim 7, characterized in that: The steps of installing the two first curing light strips (5) to the preset positions of the two baffles (4) in step 2 are as follows: The two first curing light strips (5) are respectively installed in the annular grooves (401) on the outsides of the two baffles (4) by gluing; The step of installing the second curing light strip (7) on the inner side wall of the annular component in step 4 specifically comprises: installing the second curing light strip (7) on the inner side wall of the annular component by gluing; The step 4 of installing the third curing light strip (8) between the two baffles (4) specifically includes: installing the third curing light strip (8) between the two baffles (4) by gluing.

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