Auxiliary device for leading optical fiber and optical fiber drawing device

Abstract

The utility model provides an auxiliary device for leading an optical fiber and an optical fiber drawing device. The auxiliary device for guiding the optical fiber comprises a conical guide structure, the conical guide structure is constructed to be arranged above a coating mold, the conical guide structure comprises a guide channel penetrating through the conical guide structure, and the guide channel comprises a conical guide section and a wire moving section located below the conical guide section; the cross sectional area of the conical guide section is gradually reduced in the direction close to the wire passing section, and the optical fiber can pass through a die hole of the coating die after sequentially passing through the conical guide section and the wire passing section; and the traction device is configured to be arranged above the conical guide structure, and the traction device is used for pulling the optical fiber to the position where the conical guide structure is located. According to the technical scheme, the auxiliary device for guiding the optical fiber can solve the problem that the production efficiency is low due to the fact that the optical fiber is difficult to penetrate through a die hole at a time in the process of manually penetrating through the die hole during optical fiber drawing production.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber production, in particular to an auxiliary device for optical fiber drawing and an optical fiber drawing device. Background Art

[0002] Fiber drawing is also known as wire drawing. The preform rod is melted at high temperature by a wire drawing machine and then drawn into optical fiber. In the fiber drawing production process, when the fiber diameter meets the perforation conditions, the operator passes the fiber through the die hole for coating to complete the wire drawing process. Since the die hole itself has a relatively small aperture and the optical fiber is easy to break and is in the form of filaments, it is difficult to pass through the die hole in one go during the manual perforation process, resulting in low production efficiency. Utility Model Content

[0003] The main purpose of the utility model is to provide an auxiliary device for optical fiber drawing and an optical fiber drawing device, which can solve the problem that in the process of manual penetration of the mold hole during optical fiber drawing production, it is difficult to penetrate the mold hole in one go, resulting in low production efficiency.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, an auxiliary device for optical fiber lead-in is provided, comprising: a conical guide structure, the conical guide structure is constructed to be arranged above the coating mold, the conical guide structure includes a guide channel passing through the conical guide structure, the guide channel includes a conical guide section and a wire feeding section located below the conical guide section, the cross-sectional area of ​​the conical guide section gradually decreases in the direction approaching the wire feeding section, and the optical fiber can pass through the mold hole of the coating mold after passing through the conical guide section and the wire feeding section in sequence; and a traction device, the traction device is constructed to be arranged above the conical guide structure, and the traction device is used to pull the optical fiber to the location of the conical guide structure.

[0005] Furthermore, the central axis of the tapered guide section, the central axis of the wire feeding section and the central axis of the die hole coincide with each other.

[0006] Furthermore, a plurality of gas flow channels are arranged on the side wall of the wire-cutting segment, and the plurality of gas flow channels are arranged at intervals along the circumference of the wire-cutting segment.

[0007] Further, the gas outlet end of the gas flow channel is arranged to be inclined downward; and / or, a plurality of gas flow channels are arranged at intervals along the length extension direction of the wire feeding section.

[0008] Furthermore, the conical guide structure also includes an outer cylinder, which is sleeved on the outer periphery of the wire feeding section and forms a closed annular guide channel with the wire feeding section. The gas flow channel is connected to the annular guide channel, and an air intake structure connected to the annular guide channel is provided on the side wall of the outer cylinder.

[0009] Furthermore, the auxiliary device for optical fiber lead-in also includes an air supply device, and the air intake structure is connected to the air supply device.

[0010] Furthermore, the gas supply device includes a gas storage tank, a gas supply pipeline and a control valve. One end of the gas supply pipeline is connected to the gas storage tank, and the other end of the gas supply pipeline is connected to the air intake structure. The control valve is installed on the gas supply pipeline, and the control valve is used to control the connection and disconnection of the gas supply pipeline and the air intake structure.

[0011] Furthermore, the auxiliary device for optical fiber drawing also includes a reference plate, which is constructed to be arranged above the traction device, and a through hole is arranged on the reference plate, and the through hole is arranged corresponding to the guide channel.

[0012] Furthermore, the auxiliary device for optical fiber lead-through also includes an adjustment mechanism, which is arranged above the reference plate and is used to adjust the relative position of the optical fiber and the inner wall of the through hole.

[0013] According to another aspect of the utility model, there is provided an optical fiber drawing device, comprising: the above-mentioned auxiliary device for optical fiber drawing; and a coating mold.

[0014] The technical solution of the utility model is applied, and a conical guide structure and a traction device are provided. The traction device is used to pull the optical fiber to the location of the conical guide structure. When the bottom end of the optical fiber reaches the location of the conical guide structure, the optical fiber first enters the conical guide section of the guide channel, and smoothly enters the wire-feeding section under the guidance of the conical guide section, and finally passes through the wire-feeding section and enters the mold hole of the coating mold. Compared with the prior art of manually inserting the optical fiber into the mold hole, the present application adds a conical guide structure above the coating mold, so that the optical fiber can enter the wire-feeding section autonomously under the guidance of the conical guide section, and finally passes through the wire-feeding section and enters the mold hole, which can avoid manual wire drawing operation errors, thereby improving wire drawing efficiency and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0016] In the figure:

[0017] Figure 1 A simplified structural diagram of an optical fiber drawing device according to an embodiment of the utility model is shown;

[0018] Figure 2 A cross-sectional view of a tapered guide structure according to an embodiment of the present utility model is shown.

[0019] The above drawings include the following reference numerals:

[0020] 10. Conical guide structure; 11. Conical guide section; 12. Wire feeding section; 121. Gas flow channel; 13. Guide channel; 20. Coating mold; 30. Traction device; 31. Roller; 40. Optical fiber; 50. Gas supply device; 51. Gas storage tank; 52. Gas supply pipeline; 53. Control valve; 60. Reference plate; 61. Through hole; 70. Cooling device; 80. Shearing device; 90. Adjustment mechanism. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] At present, in the optical fiber production process, operators generally thread the fibers manually. Manual threading requires high technical skills of employees, and unskilled operation can easily lead to fiber breakage, seriously affecting production efficiency.

[0023] See also Figure 1 and Figure 2 As shown, the utility model provides an auxiliary device for optical fiber drawing, which comprises: a conical guide structure 10, which is configured to be arranged above a coating mold 20, and the conical guide structure 10 comprises a guide channel 13 which passes through the conical guide structure 10, and the guide channel 13 comprises a conical guide section 11 and a wire-feeding section 12 which is located below the conical guide section 11, and the cross-sectional area of ​​the conical guide section 11 gradually decreases in a direction approaching the wire-feeding section 12, and the optical fiber 40 can pass through the mold hole of the coating mold 20 after passing through the conical guide section 11 and the wire-feeding section 12 in sequence; and a traction device 30, which is configured to be arranged above the conical guide structure 10, and is used to traction the optical fiber 40 to the location of the conical guide structure 10.

[0024] In this embodiment, the optical fiber 40 is pulled to the location of the tapered guide structure 10 by the pulling device 30. When the bottom end of the optical fiber 40 reaches the location of the tapered guide structure 10, the optical fiber 40 first enters the tapered guide section 11 of the guide channel 13, and smoothly enters the wire-feeding section 12 under the guidance of the tapered guide section 11, and finally passes through the wire-feeding section 12 and then passes through the die hole of the coating mold 20. Compared with the prior art that manually inserts the optical fiber 40 into the die hole, the present application adds a tapered guide structure 10 above the coating mold 20, so that the optical fiber 40 can enter the wire-feeding section 12 autonomously under the guidance of the tapered guide section 11, and finally passes through the wire-feeding section 12 and then passes through the die hole. On the one hand, it can avoid manual wire drawing operation errors, thereby improving wire drawing efficiency and production efficiency. On the other hand, since the optical fiber wire drawing auxiliary device of the present application can replace manual wire threading, it can also effectively reduce the intensity of manual work and improve the degree of automation of optical fiber production.

[0025] In one embodiment of the present invention, the central axis of the tapered guide section 11, the central axis of the wire-feeding section 12 and the central axis of the die hole coincide with each other.

[0026] In this embodiment, the central axis of the tapered guide section 11, the central axis of the wire feeding section 12 and the central axis of the die hole coincide with each other, so as to ensure that the optical fiber 40 can smoothly pass through the tapered guide section 11 and the wire feeding section 12 after passing through them in sequence.

[0027] See also Figure 1 and Figure 2 As shown, in one embodiment of the utility model, a plurality of gas flow channels 121 are provided on the side wall of the wire-feeding segment 12, and the plurality of gas flow channels 121 are arranged at intervals along the circumference of the wire-feeding segment 12. The conical guide structure 10 also includes an outer cylinder, which is sleeved on the outer circumference of the wire-feeding segment 12 and forms a closed annular guide channel with the wire-feeding segment 12, the gas flow channel 121 is connected to the annular guide channel, and an air intake structure connected to the annular guide channel is provided on the side wall of the outer cylinder. The auxiliary device for optical fiber drawing also includes an air supply device 50, and the air intake structure is connected to the air supply device 50.

[0028] In this embodiment, the gas supply device 50 introduces gas into the annular guide channel through the air intake structure. Since the annular guide channel is connected to the gas flow channel 121, the gas in the annular guide channel can be blown toward the optical fiber 40 through the gas flow channel 121. Through the above arrangement, the optical fiber 40 can be prevented from contacting the inner wall of the wire feeding segment 12.

[0029] In one embodiment, the gas flow channel 121 may be a through hole.

[0030] See also Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the gas outlet end of the gas flow channel 121 is arranged to be inclined downward.

[0031] Through the above arrangement, on the one hand, the upward flow of gas can be reduced, thereby reducing the resistance to the downward movement of the optical fiber 40. On the other hand, the gas flowing out from the downwardly inclined gas outlet can form a downward airflow, and the downward airflow can drive the optical fiber 40 to move toward the coating mold 20, thereby accelerating the wire drawing efficiency.

[0032] See also Figure 1 and Figure 2 As shown, in one embodiment of the present invention, a plurality of gas flow channels 121 are arranged at intervals along the length extension direction of the wire-cutting segment 12 .

[0033] Through the above arrangement, the probability of the optical fiber 40 contacting the inner wall of the wire-feeding section 12 can be further reduced.

[0034] See also Figure 1 and Figure 2 As shown, in one embodiment of the utility model, the gas supply device 50 includes a gas storage tank 51, a gas supply pipeline 52 and a control valve 53. One end of the gas supply pipeline 52 is connected to the gas storage tank 51, and the other end of the gas supply pipeline 52 is connected to the air intake structure. The control valve 53 is installed on the gas supply pipeline 52, and the control valve 53 is used to control the connection and disconnection of the gas supply pipeline 52 and the air intake structure.

[0035] In this embodiment, the gas storage tank 51 is used to store gas. The gas in the gas storage tank 51 is transported to the air intake structure through the air supply pipeline 52, and then flows into the annular guide channel through the air intake structure. Since the annular guide channel is connected to the gas flow channel 121, the gas in the annular guide channel can be blown toward the optical fiber 40 through the gas flow channel 121, thereby avoiding the optical fiber 40 from contacting the inner wall of the wire feeding segment 12.

[0036] In one embodiment, the air intake structure may be a through hole.

[0037] In one embodiment, the control valve 53 is a solenoid valve.

[0038] In one embodiment, the gas stored in the gas storage tank 51 is nitrogen.

[0039] See also Figure 1 and Figure 2 As shown, in one embodiment of the utility model, the auxiliary device for optical fiber lead-through further includes a reference plate 60, which is configured to be arranged above the traction device 30, and a through hole 61 is arranged on the reference plate 60, and the through hole 61 is arranged corresponding to the guide channel 13. The auxiliary device for optical fiber lead-through further includes an adjustment mechanism 90, which is installed above the reference plate 60, and the adjustment mechanism 90 is used to adjust the relative position of the optical fiber 40 and the inner wall of the through hole 61.

[0040] In this embodiment, the relative position of the optical fiber 40 and the inner wall of the through hole 61 is adjusted by the adjustment mechanism 90, so that the optical fiber 40 can pass through the through hole 61 on the reference plate 60. Since the through hole 61 and the guide channel 13 are arranged correspondingly, the optical fiber 40 can pass through the through hole 61, that is, can enter the guide channel 13. Through the above arrangement, the preliminary positioning of the optical fiber 40 can be achieved, ensuring that when the optical fiber 40 is pulled to the position of the conical guide structure 10 by the pulling device 30, it can smoothly enter the guide channel 13.

[0041] In one embodiment, the traction device 30 includes two rollers 31, which can move toward or away from each other. The two rollers 31 move toward each other to clamp the optical fiber 40. The two rollers 31 rotate and can pull the optical fiber 40 to the location of the tapered guide structure 10 to perform the next step of the wire drawing operation. The two rollers 31 move away from each other to loosen the optical fiber 40. The adjustment structure includes two rollers, which are respectively located on both sides of the optical fiber 40. The two rollers can move toward or away from each other, and the arrangement direction of the two rollers is perpendicular to the arrangement direction of the two rollers 31. In this way, with the cooperation of the two rollers 31 and the two rollers, the relative position of the optical fiber 40 with respect to the through hole 61 can be better adjusted.

[0042] In one embodiment, the diameter range of the through hole 61 on the reference plate 60 is 0.5mm~0.6mm, the wire-feeding segment 12 is an equal-diameter cylindrical structure, the diameter range of the equal-diameter cylindrical structure is 0.5mm~0.6mm, the central axis of the through hole 61 on the reference plate 60 coincides with the central axis of the equal-diameter cylindrical structure, and the diameter range of the through hole 61 and the equal-diameter cylindrical structure is set to 0.5mm~0.6mm to ensure that the optical fiber 40 can pass through smoothly.

[0043] like Figure 1 As shown, the utility model further provides an optical fiber drawing device, which includes: the above-mentioned auxiliary device for optical fiber drawing; and a coating mold 20.

[0044] In this embodiment, the auxiliary device for optical fiber drawing of the optical fiber drawing device has all the technical solutions and all the technical effects of the auxiliary device for optical fiber drawing described above, which will not be repeated here.

[0045] In one embodiment, the optical fiber drawing device also includes a cooling device 70 and a shearing device 80. The cooling device 70 is used to cool the optical fiber 40 to solidify it and maintain the desired shape and size. The shearing device 80 is used to cut the optical fiber 40. The cooling device 70 adopts the cooling device of the prior art, and the shearing device 80 adopts the shearing device of the prior art. The specific structure is not repeated here.

[0046] From the above description, it can be seen that the above-mentioned embodiments of the utility model achieve the following technical effects: a conical guide structure and a traction device are provided, and the optical fiber is pulled to the location of the conical guide structure by the traction device. When the bottom end of the optical fiber reaches the location of the conical guide structure, the optical fiber first enters the conical guide section of the guide channel, and smoothly enters the wire-feeding section under the guidance of the conical guide section, and finally passes through the wire-feeding section and then passes through the mold hole of the coating mold. Compared with the prior art of manually inserting the optical fiber into the mold hole, the present application adds a conical guide structure above the coating mold, so that the optical fiber can enter the wire-feeding section autonomously under the guidance of the conical guide section, and finally passes through the wire-feeding section and then passes through the mold hole, which can avoid manual wire drawing operation errors, thereby improving wire drawing efficiency and production efficiency.

[0047] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An auxiliary device for optical fiber drawing, characterized in that: include: A conical guide structure (10), the conical guide structure (10) being configured to be arranged above a coating die (20), the conical guide structure (10) comprising a guide channel (13) penetrating the conical guide structure (10), the guide channel (13) comprising a conical guide section (11) and a wire-feeding section (12) located below the conical guide section (11), the cross-sectional area of ​​the conical guide section (11) gradually decreasing in a direction approaching the wire-feeding section (12), and the optical fiber (40) can pass through the conical guide section (11) and the wire-feeding section (12) in sequence and then pass through the die hole of the coating die (20); and A traction device (30) is configured to be arranged above the conical guide structure (10), and the traction device (30) is used to pull the optical fiber (40) to where the conical guide structure (10) is located.

2. The optical fiber lead-in auxiliary device according to claim 1, characterized in that: The central axis of the conical guide section (11), the central axis of the wire-feeding section (12), and the central axis of the die hole coincide with each other.

3. The optical fiber lead auxiliary device according to claim 1, characterized in that: A plurality of gas flow channels (121) are arranged on the side wall of the wire-cutting segment (12), and the plurality of gas flow channels (121) are arranged at intervals along the circumference of the wire-cutting segment (12).

4. The optical fiber lead auxiliary device according to claim 3, characterized in that: The gas outlet end of the gas flow channel (121) is arranged to be inclined downward; and / or a plurality of the gas flow channels (121) are arranged at intervals along the length extension direction of the wire-feeding section (12).

5. The optical fiber lead assisting device according to claim 3 or 4, characterized in that: The conical guide structure (10) further comprises an outer cylinder, which is sleeved on the outer circumference of the wire-feeding section (12) and forms a closed annular guide channel with the wire-feeding section (12); the gas flow channel (121) is connected to the annular guide channel; and an air intake structure connected to the annular guide channel is provided on the side wall of the outer cylinder.

6. The optical fiber lead auxiliary device according to claim 5, characterized in that: The optical fiber lead-in auxiliary device further comprises an air supply device (50), and the air intake structure is connected to the air supply device (50).

7. The optical fiber lead assisting device according to claim 6, characterized in that: The gas supply device (50) comprises a gas storage tank (51), a gas supply pipeline (52) and a control valve (53); one end of the gas supply pipeline (52) is connected to the gas storage tank (51), and the other end of the gas supply pipeline (52) is connected to the air intake structure; the control valve (53) is installed on the gas supply pipeline (52); the control valve (53) is used to control the connection and disconnection between the gas supply pipeline (52) and the air intake structure.

8. The optical fiber lead assisting device according to claim 1, characterized in that: The auxiliary device for optical fiber drawing also includes a reference plate (60), which is configured to be arranged above the traction device (30). A through hole (61) is provided on the reference plate (60), and the through hole (61) is arranged corresponding to the guide channel (13).

9. The optical fiber lead assisting device according to claim 8, characterized in that: The auxiliary device for optical fiber lead-through further comprises an adjustment mechanism (90), wherein the adjustment mechanism (90) is arranged above the reference plate (60), and the adjustment mechanism (90) is used to adjust the relative position between the optical fiber (40) and the inner wall of the through hole (61).

10. An optical fiber drawing device, characterized in that: include: The auxiliary device for optical fiber drawing according to any one of claims 1 to 9; as well as The mold (20) is coated.

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