Optical fiber curing joint device and optical fiber curing equipment

Abstract

The invention belongs to the technical field of optical fiber manufacturing, and discloses an optical fiber curing joint device and optical fiber curing equipment. The optical fiber curing joint device comprises a central tube, a first joint, a second joint and a cleaning mechanism. The first connector is provided with a first through hole, an air inlet hole, a first negative pressure cavity and an air inlet channel, the first end of the center pipe extends into the first through hole and is connected to the first connector, the air inlet hole is communicated with the first negative pressure cavity, the air inlet channel is formed in the cavity wall of the side, facing the center pipe, of the first negative pressure cavity, and the first end of the air inlet channel is communicated with the first negative pressure cavity. The second end is communicated with the first through hole. The second connector is provided with a second through hole, an air outlet hole, a second negative pressure cavity and an air outlet channel, the second end of the center pipe extends into the second through hole and is connected to the second connector, the air outlet hole is communicated with the second negative pressure cavity, the air outlet channel is arranged on the cavity wall of the side, facing the center pipe, of the second negative pressure cavity, and the first end of the air outlet channel is communicated with the second negative pressure cavity. The second end is communicated with the second through hole.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber manufacturing, and in particular to an optical fiber curing connector device and optical fiber curing equipment. Background Art

[0002] The optical fiber curing device is a device used to cure the optical fiber coating. It irradiates the coating material through a light source system to quickly cure the coating material. Its core function is to protect the optical fiber core and enhance its mechanical properties. It has a wide range of applications in optical fiber manufacturing and other fields.

[0003] With the continuous advancement of optical fiber manufacturing technology, LED curing has largely replaced traditional mercury lamp curing, offering superior performance. However, the current air intake and exhaust systems for connecting the central tube in LED curing essentially follow those of mercury lamp curing. The air intake system consists of an air inlet and a copper core connector, while the exhaust system consists of an air exhaust port and a copper core connector.

[0004] The existing air intake and exhaust systems are both directly connected to the central tube via copper connectors. This results in high airflow intensity, which severely purges the optical fiber, causing it to vibrate and affect the curing process. Furthermore, contaminants easily adhere to the inner wall of the central tube, reducing its light transmittance and thus curing. After curing, contaminants can easily remain on the inner wall of the copper connector connected to the exhaust system, leading to clogging of the copper connector and requiring disassembly and cleaning to ensure stable and high-quality curing during the next production cycle, which in turn reduces curing efficiency. Summary of the Invention

[0005] The present invention aims to provide an optical fiber curing joint device and optical fiber curing equipment. The optical fiber curing joint device can prevent optical fiber vibration when blowing air into the central tube, improve the light transmittance of the central tube, and prevent residual contaminants after curing the optical fiber from clogging the second joint.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In one aspect, an optical fiber curing connector device is provided, comprising:

[0008] Central tube;

[0009] a first connector, wherein the first connector is provided with a first through hole, an air inlet hole, a first negative pressure chamber, and an air inlet channel; the first end of the central tube extends into the first through hole and is connected to the first connector; the air inlet hole is in communication with the first negative pressure chamber; the air inlet channel is provided on a cavity wall of the first negative pressure chamber on a side facing the central tube; the first negative pressure chamber is in communication with the first end of the air inlet channel; and the second end of the air inlet channel is in communication with the first through hole;

[0010] a second connector, wherein the second connector is provided with a second through hole, an air outlet hole, a second negative pressure chamber, and an air outlet channel; the second end of the central tube extends into the second through hole and is connected to the second connector; the air outlet hole is communicated with the second negative pressure chamber; the air outlet channel is provided on the cavity wall of the second negative pressure chamber on the side facing the central tube; the second negative pressure chamber is communicated with the first end of the air outlet channel; the second end of the air outlet channel is communicated with the second through hole; and the optical fiber is sequentially passed through the first through hole, the central tube, and the second through hole;

[0011] A cleaning mechanism is connected to the second joint, and the cleaning mechanism can clean the inner wall of the second negative pressure chamber.

[0012] Optionally, the first end of the air inlet passage is tilted downward.

[0013] Optionally, the cleaning mechanism includes a cleaning member and a driving assembly, the cleaning member is arranged in the second negative pressure chamber, and one side of the cleaning member is attached to the inner wall of the side where the second negative pressure chamber is connected to the air outlet channel, the driving assembly is installed on the second joint and driven to be connected to the cleaning member, and the driving assembly can drive the cleaning member to rotate around the axis of the central tube.

[0014] Optionally, the driving assembly includes a driving motor, a transmission assembly and a bearing, the bearing is arranged in the second negative pressure chamber, the inner ring of the bearing is connected to the cavity wall of the second negative pressure chamber, the cleaning member is connected to the outer ring of the bearing, the driving motor is driven and connected to the transmission assembly, the transmission assembly is connected to the outer ring of the bearing and can drive the outer ring of the bearing to rotate around the central axis of the central tube.

[0015] Optionally, the optical fiber curing connector device further includes a first flow guide, wherein a first end of the first flow guide is arranged at an end of the air inlet hole facing the first negative pressure chamber and connected to the inner wall of the first negative pressure chamber, and a second end of the first flow guide is arranged at an end of the air inlet channel facing the first negative pressure chamber and connected to the inner wall of the first negative pressure chamber; and / or,

[0016] The optical fiber curing joint device also includes a second flow guide, a first end of the second flow guide is arranged at one end of the air outlet facing the second negative pressure chamber and connected to the inner wall of the second negative pressure chamber, and a second end of the second flow guide is arranged at one end of the air outlet channel facing the second negative pressure chamber and connected to the inner wall of the second negative pressure chamber.

[0017] Optionally, the first flow guide is arc-shaped, and the first end of the first flow guide and the second end of the first flow guide are both smoothly connected to the inner wall of the first negative pressure chamber.

[0018] Optionally, the optical fiber curing joint device further includes two sealing mechanisms, one of the two sealing mechanisms is connected to the first joint and seals the end of the first through hole facing away from the central tube, and the other is connected to the second joint and seals the end of the second through hole facing away from the central tube.

[0019] Optionally, the sealing mechanism is an air sealing mechanism.

[0020] Optionally, at least two of the air inlet channels and the air outlet channels are arranged at intervals along the vertical direction.

[0021] On the other hand, an optical fiber curing device is provided, comprising a curing furnace, a curing lamp and the above-mentioned optical fiber curing connector device, wherein the curing lamp is arranged in the curing furnace, the central tube is arranged in the curing furnace, the first connector and the second connector are respectively embedded in the side walls at opposite ends of the curing furnace, and the curing lamp irradiates the central tube.

[0022] Beneficial effects of the present invention:

[0023] The present invention provides an optical fiber curing connector device and an optical fiber curing device. The optical fiber curing connector device includes a central tube, a first connector, a second connector, and a cleaning mechanism. The first connector is provided with a first through hole, an air inlet, a first negative pressure chamber, and an air inlet channel. The first end of the central tube extends into the first through hole and is connected to the first connector. The air inlet is connected to the first negative pressure chamber. The air inlet channel is provided on the cavity wall of the first negative pressure chamber facing the central tube. The first negative pressure chamber is connected to the first end of the air inlet channel, and the second end of the air inlet channel is connected to the first through hole. The second connector is provided with a second through hole, an air outlet, a second negative pressure chamber, and an air outlet channel. The second end of the central tube extends into the second through hole and is connected to the second connector. The air outlet is connected to the second negative pressure chamber. The air outlet channel is provided on the cavity wall of the second negative pressure chamber facing the central tube. The second negative pressure chamber is connected to the first end of the air outlet channel, and the second end of the air outlet channel is connected to the second through hole. The optical fiber is sequentially inserted into the first through hole, the central tube, and the second through hole. The gas enters the first through hole from the air inlet through the first negative pressure chamber and the air inlet channel from the side of the first through hole, and then enters the central tube, and the gas is sucked out from the side of the second through hole from the air outlet through the second negative pressure chamber and the air outlet channel. This can avoid air flow turbulence and incomplete air intake when blowing air into the central tube, ensure that the oxygen content in the central tube does not meet the standard, and improve the effect of optical fiber curing. At the same time, it can reduce the amount of contaminants attached to the inner wall of the central tube, improve the light transmittance of the central tube, and improve the optical fiber curing effect. The cleaning mechanism is connected to the second joint, and the cleaning mechanism can clean the inner wall of the second negative pressure chamber, and then discharge the contaminants through the air outlet, thereby avoiding the contaminants remaining after the optical fiber is cured from clogging the second joint. The second joint can be cleaned without disassembling the second joint, ensuring the quality of optical fiber curing and improving the efficiency of optical fiber curing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the partial structural diagrams of the optical fiber curing connector device provided by an embodiment of the present invention;

[0025] Figure 2 This is the second partial structural diagram of the optical fiber curing connector device provided in an embodiment of the present invention.

[0026] In the picture:

[0027] 1. Center tube;

[0028] 2. First joint; 21. First through hole; 22. Air inlet hole; 23. First negative pressure chamber; 24. Air inlet channel;

[0029] 3. Second joint; 31. Second through hole; 32. Air outlet; 33. Second negative pressure chamber; 34. Air outlet channel;

[0030] 4. Cleaning mechanism; 41. Cleaning element; 42. Driving assembly; 421. Driving motor; 422. Transmission assembly; 423. Bearing;

[0031] 5. First flow guide; 6. Second flow guide; 7. Sealing mechanism;

[0032] 100. Fiber optics. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0034] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0037] like Figure 1 and Figure 2 As shown, this embodiment provides an optical fiber curing connector device, including a central tube 1, a first connector 2, a second connector 3, and a cleaning mechanism 4. The first connector 2 is provided with a first through hole 21, an air inlet hole 22, a first negative pressure chamber 23, and an air inlet channel 24. The first end of the central tube 1 extends into the first through hole 21 and is connected to the first connector 2. The air inlet hole 22 is connected to the first negative pressure chamber 23. The air inlet channel 24 is provided on the wall of the first negative pressure chamber 23 on the side facing the central tube 1. The first negative pressure chamber 23 is connected to the first end of the air inlet channel 24, and the second end of the air inlet channel 24 is connected to the first through hole 21. The second connector 3 is provided with a second through hole 31, an air outlet hole 32, a second negative pressure chamber 33, and an air outlet channel 34. The second end of the central tube 1 extends into the second through hole 31 and is connected to the second connector 3. The air outlet hole 32 is connected to the second negative pressure chamber 33. The air outlet channel 34 is provided on the wall of the second negative pressure chamber 33 on the side facing the central tube 1. The second negative pressure chamber 33 is connected to the first end of the air outlet channel 34, and the second end of the air outlet channel 34 is connected to the second through hole 31. The optical fiber 100 is sequentially inserted into the first through hole 21, the central tube 1, and the second through hole 31.

[0038] Gas enters the first through hole 21 from the side of the first through hole 21 through the air inlet 22, the first negative pressure chamber 23, and the air inlet channel 24, and then enters the central tube 1. The gas is then drawn out from the side of the second through hole 31 through the air outlet 32, the second negative pressure chamber 33, and the air outlet channel 34. This prevents turbulent airflow and incomplete air intake when blowing air into the central tube 1, ensuring that the oxygen content in the central tube 1 does not meet the standard and improving the curing effect of the optical fiber 100. Furthermore, it reduces the amount of contaminants adhering to the inner wall of the central tube 1, increases the light transmittance of the central tube 1, and improves the curing effect of the optical fiber 100. Furthermore, the cleaning mechanism 4 is connected to the second connector 3 and can clean the inner wall of the second negative pressure chamber 33 and then expel the contaminants through the air outlet 32. This prevents residual contaminants from clogging the second connector 3 after curing. The second connector 3 can be cleaned without disassembling it, ensuring the quality of curing the optical fiber 100 and improving its curing efficiency.

[0039] Specifically, the center tube 1 is made of a transparent material. The first joint 2 is the air inlet joint, and the second joint 3 is the air outlet joint. Both the first joint 2 and the second joint 3 are cylindrical structures. The inner ring of the first joint 2 is a first through hole 21, and the inner ring of the second joint 3 is a second through hole 31. The first negative pressure chamber 23 is annular and disposed within the first joint 2 and coaxial with the first through hole 21; the second negative pressure chamber 33 is annular and disposed within the second joint 3 and coaxial with the second through hole 31. The first through hole 21 and the second through hole 31 are both stepped holes, each comprising a large diameter section, a small diameter section, and a stepped surface. The first and second ends of the center tube 1 extend into the large diameter section and abut against the stepped surface, which limits the axial displacement of the center tube 1. The air inlet 22 and the air outlet 32 ​​are both annular. The air inlet 22 is disposed at the end of the first joint 2 away from the center tube 1, and the air outlet 32 ​​is disposed at the end of the second joint 3 away from the center tube 1. The gas passing through the optical fiber curing connector device is nitrogen.

[0040] Optionally, the first end of the air inlet channel 24 is tilted downward to prevent the gas from vertically contacting the optical fiber 100, further preventing the optical fiber 100 from shaking, improving the curing effect of the optical fiber 100, and improving the stability of the airflow.

[0041] Specifically, the second end of the outlet channel 34 is also tilted downward to facilitate the extraction of gas from the central tube 1 and improve the stability of the air flow. The specific tilt angles of the inlet channel 24 and the outlet channel 34 are set according to specific circumstances and are not limited in this embodiment.

[0042] Optionally, at least two inlet channels 24 and outlet channels 34 are vertically spaced apart, allowing air to evenly enter the first through-hole 21 and be evenly drawn out of the second through-hole 31, thereby improving airflow stability. Specifically, four inlet channels 24 and two outlet channels 34 are provided, and each inlet channel 24 and outlet channel 34 has the same inclination angle. In other embodiments, the number of inlet channels 24 and outlet channels 34 can be set based on specific circumstances.

[0043] Optionally, the cleaning mechanism 4 includes a cleaning member 41 and a driving assembly 42. The cleaning member 41 is arranged in the second negative pressure chamber 33, and one side of the cleaning member 41 is attached to the inner wall of the side where the second negative pressure chamber 33 is connected to the air outlet channel 34. The driving assembly 42 is installed on the second joint 3 and driven to be connected to the cleaning member 41. The driving assembly 42 can drive the cleaning member 41 to rotate around the axis of the central tube 1, and the cleaning member 41 rotates relative to the second negative pressure chamber 33, thereby cleaning the inner wall of the side where the second negative pressure chamber 33 is connected to the air outlet channel 34.

[0044] Specifically, the cleaning member 41 is a long scraper extending in the vertical direction. Two cleaning members 41 are provided, and the two cleaning members 41 are symmetrical about the axis of the central tube 1. In other embodiments, the cleaning member 41 can also be a cleaning brush.

[0045] Furthermore, the drive assembly 42 includes a drive motor 421, a transmission assembly 422 and a bearing 423. The bearing 423 is arranged in the second negative pressure chamber 33. The inner ring of the bearing 423 is connected to the cavity wall of the second negative pressure chamber 33. The cleaning member 41 is connected to the outer ring of the bearing 423. The drive motor 421 is driven and connected to the transmission assembly 422. The transmission assembly 422 is connected to the outer ring of the bearing 423 and can drive the outer ring of the bearing 423 to rotate around the central axis of the central tube 1.

[0046] Specifically, the drive motor 421 is mounted on the outer wall of the second joint 3. The inner ring of the bearing 423 has an interference fit with the wall of the second negative pressure chamber 33. The cleaning member 41 can be connected to the bottom of the outer ring of the bearing 423 by welding, bonding, or snapping. The transmission assembly 422 includes a first gear and a second gear. The first gear is fixed to the output shaft of the drive motor 421, and the second gear meshes with the first gear. The outer wall of the bearing 423 is provided with teeth that mesh with the second gear. The drive motor 421 drives the first gear to rotate about the output shaft of the drive motor 421, thereby driving the second gear to rotate, which in turn drives the outer ring of the bearing 423 to rotate, causing the cleaning member 41 to rotate and clean the inner wall of the second negative pressure chamber 33 on the side connected to the air outlet channel 34. In other embodiments, a third gear can be interference-fitted on the outer wall of the bearing 423 and meshed with the second gear. The second gear drives the third gear to rotate, and the third gear drives the outer ring of the bearing 423 to rotate.

[0047] Optionally, the optical fiber curing connector device further includes a first flow guide 5, wherein a first end of the first flow guide 5 is disposed at one end of the air inlet hole 22 facing the first negative pressure chamber 23 and connected to the inner wall of the first negative pressure chamber 23, and a second end of the first flow guide 5 is disposed at one end of the air inlet channel 24 facing the first negative pressure chamber 23 and connected to the inner wall of the first negative pressure chamber 23. The provision of the first flow guide 5 allows gas to flow along the first flow guide 5 into the air inlet channel 24, thereby stabilizing the airflow and improving the curing effect of the optical fiber 100. Alternatively, the optical fiber curing connector device further includes a second flow guide 6, wherein a first end of the second flow guide 6 is disposed at one end of the air outlet hole 32 facing the second negative pressure chamber 33 and connected to the inner wall of the second negative pressure chamber 33, and a second end of the second flow guide 6 is disposed at one end of the air outlet channel 34 facing the second negative pressure chamber 33 and connected to the inner wall of the second negative pressure chamber 33. By providing the second flow guide 6 , the gas can be sucked out from the gas outlet channel 34 along the second flow guide 6 , making the airflow more stable.

[0048] Specifically, in this embodiment, a first flow guide 5 and a second flow guide 6 are provided. The first flow guide 5 and the second flow guide 6 are both annular flow guide plates. The first end of the first flow guide 5 and the second end of the second flow guide 6 form the outer wall of the flow guide plate, and the second end of the first flow guide 5 and the first end of the second flow guide 6 form the inner wall of the flow guide plate. The first flow guide 5 is provided in the first negative pressure chamber 23, and the second flow guide 6 is provided in the second negative pressure chamber 33. The first flow guide 5 is fixed to the inner wall of the first negative pressure chamber 23 by means of snapping or bonding, and the second flow guide 6 is fixed to the inner wall of the second negative pressure chamber 33 by means of snapping or bonding. The first end of the first flow guide 5 is located on a side close to the air inlet channel 24. The second end of the first flow guide 5 is provided at one end of the uppermost air inlet channel 24 facing the first negative pressure chamber 23 and is located on the upper side of the air inlet channel 24. The first end of the second guide member 6 is disposed at one end of the lowermost outlet channel 34 facing the second negative pressure chamber 33 and located below the outlet channel 34 . The second end of the second guide member 6 is located near the outlet channel 34 .

[0049] Furthermore, the first guide member 5 is arc-shaped, and the first end and the second end of the first guide member 5 are both smoothly connected to the inner wall of the first negative pressure chamber 23, further improving the stability of the airflow. Specifically, the first guide member 5 is upwardly convex, and the second guide member 6 is downwardly convex.

[0050] Optionally, the optical fiber curing connector device further includes two sealing mechanisms 7, one of which is connected to the first connector 2 and seals the end of the first through hole 21 facing away from the central tube 1, and the other is connected to the second connector 3 and seals the end of the second through hole 31 facing away from the central tube 1. By providing two sealing mechanisms 7, the ends of the first through hole 21 and the second through hole 31 facing away from each other are sealed, preventing external air from passing through the first through hole 21 and the second through hole 31 and causing airflow turbulence, thereby ensuring smoother airflow and improving the curing effect of the optical fiber 100.

[0051] Furthermore, the sealing mechanism 7 is an air-sealing mechanism. The air-sealing mechanism will not be in direct contact with the optical fiber 100, thereby avoiding causing wear to the optical fiber 100. Specifically, the two sealing mechanisms 7 are respectively installed on the opposite sides of the first connector 2 and the second connector 3. The sealing mechanism 7 can blow gas in a horizontal direction toward the ends of the first through hole 21 and the second through hole 31 that are away from each other, so as to seal the first through hole 21 and the second through hole 31. The sealing mechanism 7 is a nitrogen air-sealing mechanism. The specific structure of the sealing mechanism 7 refers to the prior art, and this application will not go into details here. In other embodiments, the sealing mechanism 7 may also be an air-sealing mechanism for other inert gases.

[0052] This embodiment also provides an optical fiber curing device, comprising a curing oven, a curing lamp, and the aforementioned optical fiber curing connector device. The curing lamp is disposed within the curing oven, a central tube 1 is disposed within the curing oven, a first connector 2 and a second connector 3 are respectively embedded in the sidewalls at opposite ends of the curing oven, and the curing lamp illuminates the central tube 1.

[0053] Specifically, multiple curing lamps are provided, evenly distributed outside the central tube 1. The curing lamps are LED lamps that generate light to irradiate the central tube 1, which in turn, in conjunction with the nitrogen gas within the central tube 1, cures the optical fiber 100. The optical fiber curing equipment also includes an air inlet device, an air extraction device, and a control assembly. The air inlet device is connected to the air inlet port 22, and the air extraction device is connected to the air outlet port 32. The control assembly is communicatively connected to the air inlet and exhaust devices, and controls the air intake and extraction speeds, thereby controlling the airflow speed within the central tube 1. The control assembly is communicatively connected to the curing lamps, and controls the curing lamp irradiation intensity. The optical fiber curing equipment also includes an online oxygen content monitoring and feedback device, which is communicatively connected to the control assembly. The online oxygen content monitoring and feedback device detects the oxygen content within the central tube 1 and transmits the detected information to the control assembly, which then adjusts the air intake and extraction speeds. The online oxygen content monitoring and feedback device enables real-time monitoring and adjustment of the oxygen content within the central tube 1 to ensure a low oxygen content within the central tube 1.

[0054] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An optical fiber curing connector device, characterized in that: include: Central tube (1); A first connector (2), the first connector (2) being provided with a first through hole (21), an air inlet hole (22), a first negative pressure chamber (23) and an air inlet channel (24); the first end of the central tube (1) extends into the first through hole (21) and is connected to the first connector (2); the air inlet hole (22) is communicated with the first negative pressure chamber (23); the air inlet channel (24) is provided on a cavity wall of the first negative pressure chamber (23) on a side facing the central tube (1); the first negative pressure chamber (23) is communicated with a first end of the air inlet channel (24); and the second end of the air inlet channel (24) is communicated with the first through hole (21); A second connector (3), wherein the second connector (3) is provided with a second through hole (31), an air outlet hole (32), a second negative pressure chamber (33) and an air outlet channel (34); the second end of the central tube (1) extends into the second through hole (31) and is connected to the second connector (3); the air outlet hole (32) is communicated with the second negative pressure chamber (33); the air outlet channel (34) is provided on the cavity wall of the second negative pressure chamber (33) on the side facing the central tube (1); the second negative pressure chamber (33) is communicated with the first end of the air outlet channel (34); the second end of the air outlet channel (34) is communicated with the second through hole (31); the optical fiber (100) is sequentially passed through the first through hole (21), the central tube (1) and the second through hole (31); A cleaning mechanism (4), the cleaning mechanism (4) is connected to the second joint (3), and the cleaning mechanism (4) is capable of cleaning the inner wall of the second negative pressure chamber (33).

2. The optical fiber curing connector device according to claim 1, characterized in that: The first end of the air inlet channel (24) is tilted downward.

3. The optical fiber curing connector device according to claim 1, characterized in that: The cleaning mechanism (4) comprises a cleaning member (41) and a driving assembly (42); the cleaning member (41) is arranged in the second negative pressure chamber (33), and one side of the cleaning member (41) is attached to the inner wall of the side of the second negative pressure chamber (33) communicating with the air outlet channel (34); the driving assembly (42) is mounted on the second joint (3) and is driven to be connected to the cleaning member (41); the driving assembly (42) is capable of driving the cleaning member (41) to rotate around the axis of the central tube (1).

4. The optical fiber curing connector device according to claim 3, characterized in that: The driving assembly (42) includes a driving motor (421), a transmission assembly (422) and a bearing (423); the bearing (423) is arranged in the second negative pressure chamber (33); the inner ring of the bearing (423) is connected to the cavity wall of the second negative pressure chamber (33); the cleaning member (41) is connected to the outer ring of the bearing (423); the driving motor (421) is drivingly connected to the transmission assembly (422); the transmission assembly (422) is connected to the outer ring of the bearing (423) and can drive the outer ring of the bearing (423) to rotate around the central axis of the central tube (1).

5. The optical fiber curing connector device according to claim 1, characterized in that: The optical fiber curing joint device further comprises a first flow guide (5), a first end of the first flow guide (5) being arranged at one end of the air inlet hole (22) facing the first negative pressure chamber (23) and connected to the inner wall of the first negative pressure chamber (23), a second end of the first flow guide (5) being arranged at one end of the air inlet channel (24) facing the first negative pressure chamber (23) and connected to the inner wall of the first negative pressure chamber (23); and / or, The optical fiber curing joint device also includes a second flow guide (6), a first end of the second flow guide (6) is arranged at one end of the air outlet (32) facing the second negative pressure chamber (33) and connected to the inner wall of the second negative pressure chamber (33), and a second end of the second flow guide (6) is arranged at one end of the air outlet channel (34) facing the second negative pressure chamber (33) and connected to the inner wall of the second negative pressure chamber (33).

6. The optical fiber curing connector device according to claim 5, characterized in that: The first flow guide (5) is arc-shaped, and the first end of the first flow guide (5) and the second end of the first flow guide (5) are both smoothly connected to the inner wall of the first negative pressure chamber (23).

7. The optical fiber curing connector device according to claim 1, characterized in that: The optical fiber curing joint device further comprises two sealing mechanisms (7), one of the two sealing mechanisms (7) being connected to the first joint (2) and sealing one end of the first through hole (21) facing away from the central tube (1), and the other being connected to the second joint (3) and sealing one end of the second through hole (31) facing away from the central tube (1).

8. The optical fiber curing connector device according to claim 7, characterized in that: The sealing mechanism (7) is an air sealing mechanism.

9. The optical fiber curing connector device according to any one of claims 1 to 8, characterized in that: At least two of the air inlet channels (24) and the air outlet channels (34) are arranged at intervals along the vertical direction.

10. An optical fiber curing device, characterized in that: The invention comprises a curing furnace, a curing lamp and an optical fiber curing joint device as described in any one of claims 1 to 9, wherein the curing lamp is arranged in the curing furnace, the central tube (1) is arranged in the curing furnace, the first joint (2) and the second joint (3) are respectively embedded in the side walls at opposite ends of the curing furnace, and the curing lamp irradiates the central tube (1).

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