阅读说明：本技术 一种变径火头拉锥工艺 (Reducing fire head tapering process ) 是由 余莹 魏大成 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种变径火头拉锥工艺,包括以下步骤：(1)光纤制备,用剥皮刀将所述光纤的一头剥去一段涂覆层；(2)启动光纤熔融拉锥机,将待拉锥光纤夹持在光纤熔融拉锥机的拉伸平台上；(3)光纤熔融拉锥机的氢气发生器开启,第一气道通气并点火,点击预拉,设备按预定完成预拉；(4)当拉锥到一定长度时,第二气道通气点火,两个气道合二为一火焰宽度变宽,共同完成后段的拉伸。(5)继续拉伸直至达到预设的分光比,拉伸停止。本发明通过两套变径的火头拉锥方法,既实现了加工器件的小型化,同时保证了锥区强度不降低。(The invention discloses a reducing fire head tapering process, which comprises the following steps: (1) preparing an optical fiber, namely peeling one section of a coating layer at one end of the optical fiber by using a peeling knife; (2) starting the optical fiber fusion tapering machine, and clamping the optical fiber to be tapered on a stretching platform of the optical fiber fusion tapering machine; (3) starting a hydrogen generator of the optical fiber melting cone drawing machine, ventilating and igniting a first air passage, clicking for pre-drawing, and finishing pre-drawing by equipment according to the preset condition; (4) when the tapering reaches a certain length, the second air passage is ventilated and ignited, the two air passages are combined into one, the flame width is widened, and the stretching of the rear section is completed together. (5) And continuing stretching until a preset splitting ratio is reached, and stopping stretching. The invention realizes the miniaturization of processing devices and simultaneously ensures that the strength of the cone area is not reduced by two sets of reducing fire head tapering methods.)

1. A variable diameter fire head cone drawing process comprises the following steps:

(1) preparing an optical fiber, namely peeling one section of a coating layer at one end of the optical fiber by using a peeling knife;

(2) starting the optical fiber fusion tapering machine, and clamping the optical fiber to be tapered on a stretching platform of the optical fiber fusion tapering machine;

(3) starting a hydrogen generator of the optical fiber melting cone drawing machine, ventilating and igniting a first air passage, clicking for pre-drawing, and finishing pre-drawing by equipment according to the preset condition;

(4) when the tapering reaches a certain length, the second air passage is ventilated and ignited, the two air passages are combined into one, the flame width is widened, and the stretching of the rear section is completed together.

(5) And continuing stretching until a preset splitting ratio is reached, and stopping stretching.

2. The variable-diameter fire head tapering process according to claim 1, characterized in that: and (5) observing each level index of the optical fiber after the stretching is finished, and correcting the product index through the ventilation of the first air passage.

3. The variable-diameter fire head tapering process according to claim 2, characterized in that: and performing primary packaging on the corrected product.

4. The variable-diameter fire head tapering process according to claim 1 or 2, characterized in that: the hydrogen generator of the optical fiber fusion cone drawing machine is provided with a first air passage and a second air passage, and the diameter of the first air passage is 4 mm; the second air flue includes two air feed channels, the branch live in the both sides of first air flue, every passageway diameter is 2 mm.

Technical Field

The invention relates to the technical field of coupler fused tapering processes, in particular to a reducing fire head tapering process.

Background

At present, in a fusion tapering process of a coupler, a fire head with a fixed size is adopted in a general process, and a pure hydrogen flame or an oxyhydrogen flame is used for heating an optical fiber. When a miniaturized device is manufactured, the diameter of the fire head can be only smaller to achieve the purpose of miniaturization of the device. However, when the diameter of the fire head is simply reduced to a certain extent, the index of the device is deteriorated, and the diameter of the cone area is also reduced due to the reduction of the diameter of the fire head, so that the strength of the cone area is weakened. Therefore, the diameter of the flame can not be reduced without limit to achieve the purpose of miniaturization of the device.

Disclosure of Invention

The invention aims to provide a reducing fire head tapering process to solve the problems in the background technology, and the two sets of reducing fire head tapering methods are adopted, so that the miniaturization of a processing device is realized, and the strength of a tapered area is not reduced.

In order to achieve the purpose, the invention provides the following technical scheme:

a variable diameter fire head cone drawing process comprises the following steps:

(1) preparing an optical fiber, namely peeling one section of a coating layer at one end of the optical fiber by using a peeling knife;

(2) starting the optical fiber fusion tapering machine, and clamping the optical fiber to be tapered on a stretching platform of the optical fiber fusion tapering machine;

(3) starting a hydrogen generator of the optical fiber melting cone drawing machine, ventilating and igniting a first air passage, clicking for pre-drawing, and finishing pre-drawing by equipment according to the preset condition;

(4) when the tapering reaches a certain length, the second air passage is ventilated and ignited, the two air passages are combined into one, the flame width is widened, and the stretching of the rear section is completed together.

(5) And continuing stretching until a preset splitting ratio is reached, and stopping stretching.

Further, after the step (5) is completed, the indexes of each level of the optical fiber after the stretching is finished are observed, and the product index is corrected through the ventilation of the first air passage.

And finally, performing primary packaging on the corrected product.

Preferably, the hydrogen generator of the optical fiber fused biconical taper machine is provided with a first air passage and a second air passage, and the diameter of the first air passage is 4 mm; the second air flue includes two air feed channels, the branch live in the both sides of first air flue, every passageway diameter is 2 mm.

The specific use method of the invention is as follows: two sets of hydrogen supply devices are adopted to respectively supply hydrogen to the fire head, and two air passages are designed on the fire head. The outer diameter of the flame head of the first air passage is 4mm, when the melting tapering is started, the flame head is supplied with air through the first air passage, and at the moment, the flame width is only 4-5 mm. Thus, the fiber coating needs to be stripped a small distance to be tapered. When the optical fiber is tapered to 6mm, the second air channel also starts to supply air to the fire head. At the moment, the hydrogen of the first air passage and the hydrogen of the second air passage are integrated, the flame width is changed into 10-11 mm, and tapering is continued under the flame width until the tapering is finished. Therefore, not only is the miniaturization of the device realized, but also the strength of the cone region is ensured not to be reduced.

Compared with the prior art, the invention has the beneficial effects that: the method is simple and effective, and by the aid of the two reducing fire head tapering methods, production of subminiature coupler devices can be realized, and meanwhile, the strength of a conical area is guaranteed not to be reduced.

Drawings

Fig. 1 is a schematic diagram of the structure of two gas passages of a hydrogen generator used in the present invention.

In the figure: 1. a first air passage, 2, a second air passage.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1, the invention provides a technical scheme of a variable diameter fire head tapering process, which comprises the following steps:

(1) preparing an optical fiber, namely peeling one section of a coating layer at one end of the optical fiber by using a peeling knife;

(2) starting the optical fiber fusion tapering machine, and clamping the optical fiber to be tapered on a stretching platform of the optical fiber fusion tapering machine;

(3) starting a hydrogen generator of the optical fiber melting cone drawing machine, ventilating and igniting the first air passage 1, clicking to pre-draw, and pre-drawing the equipment according to the preset condition;

(4) when the tapering reaches a certain length, the second air passage 2 is ventilated and ignited, the two air passages are combined into one, the flame width is widened, and the stretching of the rear section is completed together.

(5) And continuing stretching until a preset splitting ratio is reached, and stopping stretching.

The hydrogen generator of the optical fiber fusion cone drawing machine is provided with a first air passage 1 and a second air passage 2, and the diameter of a passage of the first air passage 1 is 4 mm; the second air duct 2 comprises two air supply channels, which are located on both sides of the first air duct 1, and the diameter of each channel is 2 mm.

And (5) observing each level index of the optical fiber after the stretching is finished, and correcting the product index through the ventilation of the first air passage.

And finally, performing primary packaging on the corrected product.

The invention adopts two sets of hydrogen supply devices to respectively supply hydrogen to the fire head, and the fire head is provided with two air passages. The outer diameter of the flame head of the first air passage is 4mm, when the melting tapering is started, the flame head is supplied with air through the first air passage, and at the moment, the flame width is only 4-5 mm. Thus, the fiber coating needs to be stripped a small distance to be tapered. When the optical fiber is tapered to 6mm, the second air channel also starts to supply air to the fire head. At the moment, the hydrogen of the first air passage and the hydrogen of the second air passage are integrated, the flame width is changed into 10-11 mm, and tapering is continued under the flame width until the tapering is finished. Therefore, not only is the miniaturization of the device realized, but also the strength of the cone region is ensured not to be reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.