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Method for automatically controlling fiber coating diameter, system thereof, and fiber wire drawing apparatus

A technology for coating and optical fiber, which is applied in the field of optical fiber drawing device and automatic control of optical fiber coating diameter, can solve the problems of single adjustment method, fluctuation of wire diameter, increase of material cost, etc. cost effect

Active Publication Date: 2015-08-19
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, people generally adjust the coating diameter manually, and the adjustment method is relatively simple, which will not only cause many process problems (such as fluctuations in wire diameter), but also increase the material cost of manually adjusting the coating diameter (such as the number of fibers) as the wire drawing speed increases. will increase accordingly

Method used

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  • Method for automatically controlling fiber coating diameter, system thereof, and fiber wire drawing apparatus
  • Method for automatically controlling fiber coating diameter, system thereof, and fiber wire drawing apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Example 1: The initial drawing speed of the traction wheel 9 is set to be 2100m / min, the initial flow rate of the cooling gas in the cooling pipe 3 is 10L / min; the initial coating temperature of the inner coating is 55°C, and the initial coating pressure is 7.5bar, the corresponding target inner coating diameter is 190um.

[0060] When the PLC detects that the speed of the traction wheel 9 decreases to 2050m / min with a step length of 15m / min: the PLC outputs the flow slope 0.008(L / min) / (m / min) to the gas flow control module, and the gas flow control module is based on the above The flow rate slope reduces the flow rate of the cooling gas in the cooling tube 3 to 9.6 L / min.

[0061] The PLC outputs the temperature adjustment slope of 0.02°C / (m / min) to the coating temperature control module, and the coating temperature control module reduces the coating temperature of the inner coating cup 4 to 54°C according to the above temperature adjustment slope.

[0062] The PLC ou...

Embodiment 2

[0064] Embodiment 2: The initial drawing speed of the traction wheel 9 is set to be 2100m / min, the initial flow rate of the cooling gas in the cooling pipe 3 is 10L / min; the initial coating temperature of the inner coating is 55°C, and the initial coating pressure is 7.5bar, the corresponding target inner coating diameter is 190um.

[0065] When the PLC detects that the speed of the traction wheel 9 increases to 2150m / min with a step length of 15m / min: the PLC outputs the flow slope 0.01(L / min) / (m / min) to the gas flow control module, and the gas flow control module is based on the above The flow rate slope is to increase the flow rate of the cooling gas in the cooling tube 3 to 10.5 L / min.

[0066] The PLC outputs the temperature adjustment slope of 0.025°C / (m / min) to the coating temperature control module, and the coating temperature control module increases the coating temperature of the inner coating cup 4 to 56.25°C according to the above temperature adjustment slope.

[...

Embodiment 3

[0069] Example 3: The initial drawing speed of the traction pulley 9 is set to 2100 m / min, the initial coating temperature of the outer coating is 60° C., the initial coating pressure is 7.0 bar, and the corresponding target outer coating diameter is 245 μm.

[0070] When the PLC detects that the speed of traction wheel 9 decreases to 2050m / min with a step size of 15m / min:

[0071] The PLC outputs the temperature adjustment slope of 0.02°C / (m / min) to the coating temperature control module, and the coating temperature control module reduces the coating temperature of the outer coating cup 5 to 59°C according to the above temperature adjustment slope.

[0072] The PLC outputs the pressure regulation slope of 0.002 bar / (m / min) to the coating pressure control module, and the coating temperature control module reduces the coating pressure of the outer coating cup 5 to 6.9 bar according to the above pressure regulation slope.

[0073] The coating diameter caliper 7 test shows that t...

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Abstract

The invention discloses a method for automatically controlling the fiber coating diameter, a system thereof, and a fiber wire drawing apparatus, and relates to the field of wet film humidification coating in fiber wire drawing. The method comprises the following steps: adjusting the flow amount of the cooling gas of a fiber in the cooling process of a fiber preform rod; adjusting the coating temperature and the coating pressure of the inner coat of the fiber preform rod in the inner coat coating layer of the cooled fiber preform rod; and adjusting the coating temperature and the coating pressure of the outer coat of the fiber preform rod in the outer coat coating process of the cooled fiber preform rod. The method, the system and the apparatus improve the coat diameter stability, can simplify the wire drawing technology and reduce the material cost required by wire drawing, and are of great significance to improve the production efficiency of fibers, obtain high-quality fibers and reduce the cost.

Description

technical field [0001] The invention relates to the field of wet coating in optical fiber drawing, in particular to a method, system and optical fiber drawing device for automatically controlling the coating diameter of an optical fiber. Background technique [0002] With the implementation and construction of fiber-to-the-home and 4G (fourth generation mobile communication technology) networks, the market demand for optical fiber has increased significantly, which has led to continuous construction and expansion of optical fiber manufacturers. In the production process, optical fiber manufacturers continuously improve the production process of optical fibers to reduce production costs and improve production efficiency, thereby increasing market share and surviving capital. [0003] The existing method for reducing the production cost of optical fiber and improving the production efficiency of optical fiber is generally: drawing through a large-sized optical fiber preform ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/12
Inventor 郭君余志强宋涛郭康复但秋实潘常军
Owner FENGHUO COMM SCI & TECH CO LTD
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