Automatic fiber penetrating device of optical fiber drawing UV lamp

Abstract

The utility model provides an optical fiber drawing UV lamp automatic fiber threading device, which belongs to the technical field of fiber drawing process control, and comprises two UV lamps and an optical fiber, the two UV lamps are arranged on the same bracket, a quartz tube is arranged in the side irradiation direction of the UV lamps, the two ends of the quartz tube are respectively provided with an air inlet device and an air extractor, and the air inlet device and the air extractor are arranged on the bracket. The air extractor is connected with a vacuum conveying assembly, and the vacuum conveying assembly provides power for the optical fiber to penetrate through the quartz tube. According to the utility model, the problems that the traditional fiber threading method excessively depends on manual operation, an operator needs to prepare a fiber threading rod, in addition, an optical fiber needs to be wound on the fiber threading rod, and the future automatic production is not facilitated are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fiber drawing process control, and particularly relates to an automatic fiber threading device for a fiber drawing UV lamp. Background Technique

[0002] In the process of fiber drawing, the fiber passing through the UV lamp curing furnace is a key link. The traditional fiber threading method relies on manual operation. When the fiber passes through the coating die, the operator needs to wind the fiber around the metal threading rod with tape, and then put the threading rod into the air inlet device. The fiber is brought into the quartz tube of the UV lamp by the gravity of the metal threading rod, and then passes through the small hole at the bottom of the air extraction device. The fiber passes through the quartz tube in turn.

[0003] The traditional fiber threading method relies too much on manual operation. The operator needs to prepare the threading rod, and in addition, the fiber needs to be wound around the threading rod, which is not conducive to future automated production. Therefore, an automatic fiber threading device for a fiber drawing UV lamp is proposed. Summary of the Invention

[0004] The utility model provides an automatic fiber threading device for a fiber drawing UV lamp, aiming to solve the problem that the traditional fiber threading method relies too much on manual operation, the operator needs to prepare the threading rod, and in addition, the fiber needs to be wound around the threading rod, which is not conducive to future automated production.

[0005] An embodiment of the utility model provides an automatic fiber threading device for a fiber drawing UV lamp, which includes two UV lamps and a fiber. The two UV lamps are installed on the same bracket. A quartz tube is arranged in the irradiation direction on the side of the UV lamp. An air inlet device and an air extraction device are respectively installed at both ends of the quartz tube. A vacuum conveying component is connected to the air extraction device. The vacuum conveying component provides power for the fiber to pass through the quartz tube. The quartz tube is communicated with both the air inlet device and the air extraction device. The air inlet device is installed on one side of the UV lamp, and the air extraction device is installed on the other side of the UV lamp.

[0006] Further, the air inlet device includes a flange seat. The flange seat is sleeved at one end of the quartz tube. A compression sleeve is threadedly connected to the flange seat. The compression sleeve is connected to a flange cover by bolts. Quick connectors are installed on both sides of the flange seat.

[0007] By adopting the above technical solution, the air inlet device can allow gas to enter, so as to convey the fiber.

[0008] Further, a plurality of through holes are formed in the compression sleeve, and the through holes are communicated with the space formed by the flange seat and the compression sleeve.

[0009] By adopting the above technical solution, the through holes are used to make the gas evenly pressured within the circumference.

[0010] Further, the air extraction device includes an air extraction base, which is sleeved on the other end of the quartz tube. An air extraction hood is connected to the air extraction base by bolts. An air extraction cylinder is threadedly connected to the air extraction hood. One end of the air extraction cylinder extends into the air extraction hood, and a sealing gasket is installed in the gap between the air extraction cylinder and the air extraction base. Positioning pins are installed on both sides of the air extraction cylinder. One end of an air extraction pipe is installed on one side of the air extraction hood. The other end of the air extraction pipe is connected to an air extraction fan. A second joint is installed on the air extraction pipe, and the air extraction pipe is connected to a pressure sensor through the second joint.

[0011] By adopting the above technical solution, the air extraction device is used for air extraction. When the air extraction fan in the air extraction device starts, waste gas can be extracted through the air extraction pipe. By using the pressure sensor connected to the air extraction pipe, the magnitude of the air extraction pressure can be detected. In cooperation with the vacuum conveying component, when the vacuum conveying component works, the air extraction pressure will change, which can be used as a closed-loop detection to determine whether the vacuum conveying component is working properly.

[0012] Further, a plurality of holes are formed on both sides of a section of the air extraction cylinder extending into the air extraction hood, and the inner cavity of the air extraction cylinder communicates with the air extraction pipe through the holes.

[0013] By adopting the above technical solution, the holes are used to meet the conditions for gas flow.

[0014] Further, the vacuum conveying component includes a connecting cylinder installed on the air extraction cylinder. A guiding cylinder is threadedly connected to the connecting cylinder. The top of the guiding cylinder does not contact the inner wall of the connecting cylinder and there is a gap. One end of a pipeline is connected to one side of the connecting cylinder. A throttle valve, a solenoid valve, and a pressure reducing valve are sequentially connected to the pipeline. The other end of the pipeline is connected to a gas source.

[0015] By adopting the above technical solution, the pressure reducing valve in the vacuum conveying component is used to control the pipeline pressure, then the normally closed solenoid valve is used to control the on-off of the gas path, and a gas throttle valve is added to adjust the gas flow rate, so as to control the on-off and magnitude of the vacuum suction force.

[0016] Further, the throttle valve, the solenoid valve, the pressure reducing valve, the gas source, the pressure sensor, and the air extraction fan are all electrically connected to the same PLC, and the PLC is connected to a button for controlling fiber threading.

[0017] The beneficial effects of the present utility model are as follows:

[0018] In the wire drawing process of the present utility model, if there are small broken optical fibers, they are likely to scratch the optical fiber inside the quartz tube of the UV lamp. However, by using the vacuum conveying assembly, all the residues inside the quartz tube can be sucked away, and the entire optical fiber threading process realizes automatic control, eliminating the need for operators to prepare optical fiber threading rods, reducing manual intervention, and improving production efficiency and product quality stability.

[0019] Other features and advantages of the present utility model will be described in the subsequent specification, and part of them will become obvious from the specification or be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures specifically pointed out in the specification and the drawings. Brief Description of the Drawings

[0020] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0021] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the air extraction device and the air flow path of an embodiment of the present utility model;

[0023] Figure 3 is a schematic structural diagram of the air intake device of an embodiment of the present utility model;

[0024] Reference numerals in the drawings: 1, UV lamp; 2, quartz tube; 3, air intake device; 31, flange seat; 32, compression sleeve; 33, flange cover; 34, quick connector; 4, optical fiber; 5, air extraction device; 51, air extraction base; 52, sealing gasket; 53, air extraction hood; 55, positioning pin; 56, air extraction pipe; 57, air extraction cylinder; 58, connector II; 59, pressure sensor; 510, air extraction fan; 6, vacuum conveying assembly; 71, pipeline; 72, throttle valve; 73, solenoid valve; 74, pressure reducing valve; 75, gas source; 76, connecting cylinder; 77, guiding cylinder. Detailed Description of the Embodiments

[0025] In order to make the objectives, technical solutions, and advantages of the technical solutions of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present utility model. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0026] Reference Figures 1-3 Figures 1-3 , an embodiment of the utility model provides an automatic optical fiber threading device for a UV lamp in optical fiber drawing, which includes two UV lamps 1 and an optical fiber 4. The two UV lamps 1 are installed on the same bracket. A quartz tube 2 is arranged in the irradiation direction on the side of the UV lamp 1. An air inlet device 3 and an air extraction device 5 are respectively installed at both ends of the quartz tube 2. A vacuum conveying component 6 is connected to the air extraction device 5. The vacuum conveying component 6 provides power for the optical fiber 4 to pass through the quartz tube 2. The quartz tube 2 is communicated with both the air inlet device 3 and the air extraction device 5. The air inlet device 3 is installed on one side of the UV lamp 1, and the air extraction device 5 is installed on the other side of the UV lamp 1.

[0027] The air inlet device 3 includes a flange seat 31. The flange seat 31 is sleeved on one end of the quartz tube 2. A compression sleeve 32 is threadedly connected to the flange seat 31. The compression sleeve 32 is bolted to a flange cover 33. Quick connectors 34 are installed on both sides of the flange seat 31. The air inlet device 3 can let gas enter, so as to convey the optical fiber. By connecting a protective gas externally through the quick connectors 34, air can be prevented from being brought in by the optical fiber, affecting the curing degree.

[0028] A number of through holes are formed in the compression sleeve 32. The through holes are communicated with the space surrounded by the flange seat 31 and the compression sleeve 32, and the through holes are used to equalize the pressure of the gas in the circumference.

[0029] The air extraction device 5 includes an air extraction base 51. The air extraction base 51 is sleeved on the other end of the quartz tube 2. An air extraction hood 53 is bolted to the air extraction base 51. An air extraction cylinder 57 is threadedly connected to the air extraction hood 53. One end of the air extraction cylinder 57 extends into the air extraction hood 53 and a sealing gasket 52 is installed in the gap with the air extraction base 51. Positioning pins 55 are installed on both sides of the air extraction cylinder 57. One end of an air extraction pipe 56 is installed on one side of the air extraction hood 53. The other end of the air extraction pipe 56 is connected to an air extraction fan 510. A second joint 58 is installed on the air extraction pipe 56. The air extraction pipe 56 is connected to a pressure sensor 59 through the second joint 58. The pressure sensor 59 is a vacuum negative pressure sensor. The air extraction device 5 is used for air extraction. When the air extraction fan 510 in the air extraction device 5 starts, waste gas can be extracted through the air extraction pipe 56. By using the pressure sensor 59 communicated with the air extraction pipe 56, the size of the air extraction pressure can be detected. Cooperating with the vacuum conveying component 6, when the vacuum conveying component 6 works, the air extraction pressure will change, which can be used as a closed-loop detection to judge whether the vacuum conveying component 6 works normally.

[0030] A number of holes are formed on both sides of the section where the air extraction cylinder 57 extends into the air extraction hood 53. The inner cavity of the air extraction cylinder 57 is communicated with the air extraction pipe 56 through the holes, and the holes are used to meet the conditions for gas flow.

[0031] The vacuum conveying assembly 6 includes a connecting cylinder 76 installed on the air extraction cylinder 57. A guiding cylinder 77 is threadedly connected to the connecting cylinder 76. The top of the guiding cylinder 77 does not contact the inner wall of the connecting cylinder 76 and there is a gap. One end of a pipeline 71 is connected to one side of the connecting cylinder 76. A throttle valve 72, a solenoid valve 73, and a pressure reducing valve 74 are sequentially connected to the pipeline 71. The other end of the pipeline 71 is connected to a gas source 75. The pressure reducing valve 74 in the vacuum conveying assembly 6 is used to control the pipeline pressure, then the normally closed solenoid valve 73 controls the on / off of the gas path, and then a gas throttle valve 72 is added to adjust the gas flow rate, so as to control the on / off and the magnitude of the vacuum suction. The gas blows downward through the small gap and drives the gas above downward.

[0032] The throttle valve 72, the solenoid valve 73, the pressure reducing valve 74, the gas source 75, the pressure sensor 59, and the air extraction fan 510 are all electrically connected to the same PLC, and the PLC is connected to a button for controlling fiber threading.

[0033] The specific implementation method is as follows: During use, when the fiber optic production is being prepared, the air extraction fan 510 stops working and the solenoid valve 73 is not powered on, and there is no air flow inside the entire quartz tube 2. When threading the fiber, the button is pressed, the solenoid valve 73 is powered on, and the pipeline 71 is opened to allow gas to flow. According to the Venturi effect, the air flow goes downward and forms a vacuum in the upper quartz tube 2, and the vacuum automatically sucks the optical fiber downward. The pressure reducing valve 74 adjusts the gas pressure, and the throttle valve 72 can adjust the air flow rate. After the fiber threading is completed, the button is pressed again, the power supply of the solenoid valve 73 is turned off, the gas automatically closes, and the vacuum state disappears at this time. Then the air extraction fan 510 is turned on to operate the air extraction fan 510 to extract the waste gas generated during the curing of the fiber optic UV, ensuring normal production with quality.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic fiber threading device for optical fiber drawing UV lamp, comprising two UV lamps (1) and an optical fiber (4), characterized in that: The two UV lamps (1) are mounted on the same bracket. A quartz tube (2) is arranged on the side irradiation direction of the UV lamp (1). An air intake device (3) and an air exhaust device (5) are respectively installed at both ends of the quartz tube (2). The air exhaust device (5) is connected to a vacuum conveying assembly (6). The vacuum conveying assembly (6) provides power for the optical fiber (4) to pass through the quartz tube (2). The quartz tube (2) is connected to the air intake device (3) and the air exhaust device (5). The air intake device (3) is installed on one side of the UV lamp (1), and the air exhaust device (5) is installed on the other side of the UV lamp (1).

2. The optical fiber drawing UV lamp automatic fiber threading device according to claim 1, characterized in that: The air intake device (3) comprises a flange seat (31), the flange seat (31) is sleeved on one end of the quartz tube (2), a compression sleeve (32) is threadedly connected to the flange seat (31), the compression sleeve (32) is bolted to a flange cover (33), and quick-connect connectors (34) are installed on both sides of the flange seat (31).

3. The optical fiber drawing UV lamp automatic fiber threading device according to claim 2, characterized in that: The compression sleeve (32) is provided with a plurality of through holes, and the through holes are communicated with the space enclosed by the flange seat (31) and the compression sleeve (32).

4. The optical fiber drawing UV lamp automatic fiber threading device according to claim 1, characterized in that: The exhaust device (5) comprises an exhaust base (51), the exhaust base (51) is sleeved on the other end of the quartz tube (2), the exhaust base (51) is connected to an exhaust hood (53) by bolts, the exhaust hood (53) is threadedly connected to an exhaust tube (57), one end of the exhaust tube (57) extends into the exhaust hood (53) and a sealing gasket (52) is installed in the gap between the exhaust tube and the exhaust base (51), positioning pins (55) are installed on both sides of the exhaust tube (57), one end of an exhaust pipe (56) is installed on one side of the exhaust hood (53), the other end of the exhaust pipe (56) is connected to an exhaust fan (510), a second joint (58) is installed on the exhaust pipe (56), and the exhaust pipe (56) is connected to a pressure sensor (59) through the second joint (58).

5. The optical fiber drawing UV lamp automatic fiber threading device according to claim 4, characterized in that: A section of the exhaust tube (57) extending into the exhaust cover (53) is provided with a plurality of holes on both sides, and the inner cavity of the exhaust tube (57) is connected with the exhaust pipe (56) through the holes.

6. The optical fiber drawing UV lamp automatic fiber threading device according to claim 4, characterized in that: The vacuum conveying assembly (6) comprises a connecting tube (76) mounted on an exhaust tube (57); a guide tube (77) is threadedly connected to the connecting tube (76); the top of the guide tube (77) does not contact the inner wall of the connecting tube (76) and there is a gap; one side of the connecting tube (76) is connected to one end of a pipeline (71); a throttle valve (72), a solenoid valve (73), and a pressure reducing valve (74) are sequentially connected to the pipeline (71); and the other end of the pipeline (71) is connected to an air source (75).

7. The optical fiber drawing UV lamp automatic fiber threading device according to claim 6, characterized in that: The throttle valve (72), the solenoid valve (73), the pressure reducing valve (74), the air source (75), the pressure sensor (59), and the exhaust fan (510) are all electrically connected to the same PLC, and the PLC is connected to a button for controlling fiber threading.

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