WO2018145519A1 - Automatic drawing apparatus for optical fiber preform and automatic drawing method - Google Patents
Automatic drawing apparatus for optical fiber preform and automatic drawing method Download PDFInfo
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- WO2018145519A1 WO2018145519A1 PCT/CN2017/117115 CN2017117115W WO2018145519A1 WO 2018145519 A1 WO2018145519 A1 WO 2018145519A1 CN 2017117115 W CN2017117115 W CN 2017117115W WO 2018145519 A1 WO2018145519 A1 WO 2018145519A1
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- optical fiber
- fiber preform
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
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- the invention relates to an automatic wire drawing device and an automatic wire drawing method, in particular to an optical fiber preform automatic wire drawing device and an automatic wire drawing method.
- Fiber drawing is a process operation in which the preform is drawn and heated by a heating device to be drawn into a fine fiber fiber with a diameter that meets the requirements, and the core/package diameter ratio and the refractive index distribution form of the fiber are maintained. It can be seen that the optical fiber preform and the wire drawing process directly determine the production cost, quality and profit of the fiber optic cable enterprise, and the improvement of the utilization efficiency of the optical fiber preform raw material has become the main direction of reducing the cost of the optical fiber preform and the optical fiber.
- the domestic fiber drawing is basically semi-automatic drawing.
- the small tail pipe is used to draw the optical fiber preform.
- the amount and the power of the drawing furnace make it difficult to control the stability of the fiber diameter fluctuation and the stability of various optical parameters, thereby affecting the production of qualified optical fibers.
- the prior art CN104211295A discloses an optical fiber drawing device and a wire drawing method thereof. In the wire drawing device, the tail end of the optical fiber preform passes through the quartz glass tail pipe and the hanging rod platform, and the human body is required to continuously intervene in the amount of the rod and the power of the drawing furnace.
- the purpose of automatic wire drawing cannot be achieved; at the same time, the diameter of the quartz glass tail pipe of the wire drawing device is smaller than the diameter of the optical fiber preform, and the change of the gap between the graphite heating element after entering the drawing furnace and the graphite heating element of the drawing furnace necessarily affects the uniformity of the temperature field. . Therefore, it is urgent to develop an optical fiber preform automatic drawing device which improves the utilization rate of the optical fiber preform and reduces the production cost of the optical fiber to ensure the stability of the airflow and the temperature field in the drawing furnace.
- an optical fiber preform automatic wire drawing device including a tail pipe, an optical fiber preform, a butt step, a quartz sleeve, a drawing furnace, a furnace mouth gas sealing port, a furnace mouth metal gas plate;
- the diameter of the tail pipe is smaller than the diameter of the optical fiber preform, and the optical fiber preform is welded to the tail pipe at a high temperature to form a butt step.
- the butt step is perpendicular to the optical fiber preform, and the N quartz sleeves stacked on top of each other are sleeved on the tail pipe.
- the outer side is clamped on the docking step, N ⁇ 3, and the optical fiber preform is vertically inserted into the drawing furnace through the metal gas plate of the furnace mouth, and the gas sealing port of the furnace mouth is arranged on the metal gas plate of the furnace mouth.
- a seamless connection mechanism is disposed between adjacent quartz sleeves.
- the seamless connecting mechanism is a ring groove disposed on the edge of the quartz sleeve, and the ring groove is convenient to be installed, and the sealing property and the installation precision between the two quartz sleeves are ensured.
- the inner diameter of the quartz sleeve is 4 mm larger than the diameter of the tail pipe, and the outer diameter is the same as the diameter of the optical fiber preform, and the height is 300 mm.
- the height of the quartz sleeve is set to 300 mm, and the number of the quartz sleeves placed is three.
- a further object of the present application is to achieve an automatic drawing method for an optical fiber preform automatic drawing device, which comprises the following steps:
- the optical fiber preform is vertically traversed into the drawing furnace through the metal gas plate of the furnace mouth, and the gas sealing mouth of the furnace mouth metal gas plate is sealed;
- the present invention saves the material cost by docking the uniform large-diameter optical fiber preform through the small tail pipe, and installs a plurality of quartz sleeves of the same diameter as the optical fiber preform on the small tail pipe, especially the upper sleeve is set on the quartz sleeve.
- the ring groove not only ensures the tightness between the two quartz sleeves, but also the accuracy of the installation. It also facilitates the installation of the quartz sleeve, and keeps the amount of the rod and the power of the furnace constant, ensuring that the small tail pipe device enters the furnace.
- the airflow and temperature field in the drawing furnace are stable, thereby stabilizing the wire diameter fluctuation and realizing automatic drawing; at the same time, a gas seal is arranged at the drawing furnace mouth to prevent air from entering the furnace, thereby ensuring the stability of the airflow and the temperature field in the drawing furnace, and preventing The graphite material is oxidized to increase the strength of the fiber.
- the utility model has the advantages of ensuring the stability of the airflow and the temperature field in the furnace, ensuring the stability of the wire diameter fluctuation, prolonging the service life of the graphite piece, reducing the production cost of the optical fiber, greatly improving the drawing efficiency, and having a larger The value of promotion and application.
- Figure 1 is a schematic view of the docking of the preform and the tail pipe of the present application. Among them, 1-tail tube, 2-fiber preform, 3-butt step.
- Figure 2 is a schematic view showing the installation of the quartz sleeve of the present application. Among them, 4-quartz sleeve.
- Figure 3 is an enlarged view of the structure of the quartz sleeve joint.
- Figure 4 is a schematic view of the tail rod of the present application. Among them, 5-drawing furnace, 6-furnace gas sealing, 7-mouth metal gas plate.
- an optical fiber preform automatic wire drawing device including a tail pipe 1, an optical fiber preform 2, a docking step 3, a quartz sleeve 4, a drawing furnace 5, and a mouth gas sealing port.
- the furnace mouth metal gas plate 7 the diameter of the tail pipe 1 is smaller than the diameter of the optical fiber preform 2, the optical fiber preform 2 and the tail pipe 1 are welded together at high temperature to form a docking step 3, the docking step 3 and the optical fiber preform 2 vertical, N sets of quartz sleeves 4 stacked on top of each other are sleeved on the outside of the tail pipe 1 and are clamped on the docking step 3, N ⁇ 3, and the optical fiber preform 2 is vertically hanged through the furnace metal gas plate 7 into the drawing furnace 5 Inside, the furnace mouth gas seal 6 is disposed on the furnace mouth metal gas plate 7.
- an automatic wire drawing method for an optical fiber preform automatic wire drawing device which comprises the following steps:
- the height of the quartz sleeve is set to 300mm, and the number of quartz sleeves is set to three.
- the first quartz sleeve 4 is sleeved downward from the top of the tail pipe 1 and The card is attached to the docking step 3, and then the second quartz sleeve 4 is sleeved down from the top of the tail pipe 1 to the ring groove on the edge of the first quartz sleeve 4, and then the third quartz is placed.
- the sleeve 4 is sleeved down from the top of the tail pipe 1 to the annular groove on the edge of the second quartz sleeve 4, as shown in FIG. 2 and FIG. 3;
- the optical fiber preform 2 is vertically traversed into the drawing furnace 5 through the metal gas plate 7 of the furnace mouth, and the furnace gas sealing port 6 on the metal gas plate 7 of the furnace mouth is closed, as shown in FIG. ;
- the quartz sleeve used in the automatic drawing device of the optical fiber preform of the present application has very low cost and can be reused, and solves the problem that the tail rod is constantly intervened, ensuring that the amount of the rod and the power of the furnace are always kept unchanged; and the mouthpiece of the drawing furnace is sealed at the same time.
- the setting prevents the air from entering the furnace and prevents the oxidation of the graphite parts. The two cooperate to ensure the stability of the airflow and the temperature field in the drawing furnace, thereby stabilizing the wire diameter fluctuation and realizing the purpose of automatic wire drawing.
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Abstract
An automatic drawing apparatus for an optical fiber preform, comprising a tail tube, an optical fiber preform, an abutment step, quartz sleeves, a drawing furnace, a furnace opening air sealing port, and a furnace opening metal air plate. The diameter of the tail tube is less than that of the optical fiber preform; the optical fiber preform and the tail tube are welded together at high temperature to form the abutment step; the abutment step is perpendicular to the optical fiber preform; N quartz sleeves that are stacked from top to bottom are sleeved onto the outside of the tail tube and fitted onto the abutment step, wherein N ≥ 3; the optical fiber preform vertically passes through the furnace port metal air plate and is hung in the drawing furnace; the furnace opening air sealing port is provided in the furnace opening metal air plate.
Description
本申请涉及一种自动拉丝装置及自动拉丝方法，具体涉及一种光纤预制棒自动拉丝装置及自动拉丝方法。The invention relates to an automatic wire drawing device and an automatic wire drawing method, in particular to an optical fiber preform automatic wire drawing device and an automatic wire drawing method.
光纤拉丝是将预制棒拉丝利用某种加热设备加热熔融后拉制成直径符合要求的细小光纤纤维，并保证光纤的芯/包直径比和折射率分布形式不变的工艺操作过程。可见，光纤预制棒和拉丝工艺直接决定了光纤光缆企业的生产成本、质量和利润，而提高光纤预制棒原材料利用效率，已经成为降低光纤预制棒及光纤成本的主攻方向。Fiber drawing is a process operation in which the preform is drawn and heated by a heating device to be drawn into a fine fiber fiber with a diameter that meets the requirements, and the core/package diameter ratio and the refractive index distribution form of the fiber are maintained. It can be seen that the optical fiber preform and the wire drawing process directly determine the production cost, quality and profit of the fiber optic cable enterprise, and the improvement of the utilization efficiency of the optical fiber preform raw material has become the main direction of reducing the cost of the optical fiber preform and the optical fiber.
目前，国内光纤拉丝基本上是半自动拉丝，为了节约成本，都采取小尾管对接光纤预制棒拉丝，拉至尾棒时，由于小尾管直径与预制棒直径相差较大，需要人为不停干预进棒量和拉丝炉功率，难以控制光纤丝径波动的稳定和各项光学参数性能的稳定，从而影响合格光纤的生产。例如，现有技术CN104211295A公开了一种光纤拉丝装置及其拉丝方法，该拉丝装置中光纤预制棒尾端通过石英玻璃尾管与吊棒平台，需人为不停干预进棒量和拉丝炉功率，从而无法实现自动拉丝的目的；同时该拉丝装置的石英玻璃尾管直径由于小于光纤预制棒的直径，进入拉丝炉后与拉丝炉石墨加热元件之间的间隙的大小变化必然影响温度场的均匀性。因此，亟待研制一种提高光纤预制棒的利用率降低光纤生产成本，保证拉丝炉内气流和温场的稳定的光纤预制棒自动拉丝装置。At present, the domestic fiber drawing is basically semi-automatic drawing. In order to save cost, the small tail pipe is used to draw the optical fiber preform. When pulling to the tail bar, since the diameter of the small tail pipe and the diameter of the preform are large, it is necessary to manually intervene. The amount and the power of the drawing furnace make it difficult to control the stability of the fiber diameter fluctuation and the stability of various optical parameters, thereby affecting the production of qualified optical fibers. For example, the prior art CN104211295A discloses an optical fiber drawing device and a wire drawing method thereof. In the wire drawing device, the tail end of the optical fiber preform passes through the quartz glass tail pipe and the hanging rod platform, and the human body is required to continuously intervene in the amount of the rod and the power of the drawing furnace. Therefore, the purpose of automatic wire drawing cannot be achieved; at the same time, the diameter of the quartz glass tail pipe of the wire drawing device is smaller than the diameter of the optical fiber preform, and the change of the gap between the graphite heating element after entering the drawing furnace and the graphite heating element of the drawing furnace necessarily affects the uniformity of the temperature field. . Therefore, it is urgent to develop an optical fiber preform automatic drawing device which improves the utilization rate of the optical fiber preform and reduces the production cost of the optical fiber to ensure the stability of the airflow and the temperature field in the drawing furnace.
申请内容Application content
本申请的目的是通过以下技术方案实现的,一种光纤预制棒自动拉丝装置，包括尾管，光纤预制棒，对接台阶，石英套筒，拉丝炉，炉口气封口，炉口金属气板；所述尾管的直径小于光纤预制棒的直径，所述光纤预制棒与尾管高温熔接在一起形成对接台阶，对接台阶与光纤预制棒垂直，N个上下叠放的石英套筒套设在尾管外侧并卡装在对接台阶上，N≥3，光纤预制棒垂直通过炉口金 属气板挂入拉丝炉内，炉口气封口设置在炉口金属气板上。The purpose of the application is achieved by the following technical solutions, an optical fiber preform automatic wire drawing device, including a tail pipe, an optical fiber preform, a butt step, a quartz sleeve, a drawing furnace, a furnace mouth gas sealing port, a furnace mouth metal gas plate; The diameter of the tail pipe is smaller than the diameter of the optical fiber preform, and the optical fiber preform is welded to the tail pipe at a high temperature to form a butt step. The butt step is perpendicular to the optical fiber preform, and the N quartz sleeves stacked on top of each other are sleeved on the tail pipe. The outer side is clamped on the docking step, N≥3, and the optical fiber preform is vertically inserted into the drawing furnace through the metal gas plate of the furnace mouth, and the gas sealing port of the furnace mouth is arranged on the metal gas plate of the furnace mouth.
进一步，相邻所述石英套筒之间设置了无缝连接机构。Further, a seamless connection mechanism is disposed between adjacent quartz sleeves.
进一步，所述无缝连接机构为设置在石英套筒边沿上的环槽，该环槽方便安装，可保证两两石英套筒间的密封性和安装的精确度。Further, the seamless connecting mechanism is a ring groove disposed on the edge of the quartz sleeve, and the ring groove is convenient to be installed, and the sealing property and the installation precision between the two quartz sleeves are ensured.
进一步，所述石英套筒的内径比尾管直径大4mm，外径与光纤预制棒的直径相同，高度为300mm。Further, the inner diameter of the quartz sleeve is 4 mm larger than the diameter of the tail pipe, and the outer diameter is the same as the diameter of the optical fiber preform, and the height is 300 mm.
进一步，当尾管最小长度为950mm时，设定石英套筒高度为300mm，放置石英套筒的个数为3个。Further, when the minimum length of the tail pipe is 950 mm, the height of the quartz sleeve is set to 300 mm, and the number of the quartz sleeves placed is three.
本申请的进一步目的是通过以下技术方案实现的,一种光纤预制棒自动拉丝装置的自动拉丝方法，包括以下步骤：A further object of the present application is to achieve an automatic drawing method for an optical fiber preform automatic drawing device, which comprises the following steps:
1)先将光纤预制棒与尾管高温熔接在一起，形成对接台阶；1) firstly welding the optical fiber preform and the tail pipe at a high temperature to form a docking step;
2)然后将第一个石英套筒从尾管顶部向下套设并卡装到对接台阶上，接着将第二个石英套筒从尾管顶部向下套设叠放到第一个石英套筒上，如此直到第N个石英套筒叠放到第N-1个石英套筒上；2) Then the first quartz sleeve is sleeved down from the top of the tail pipe and snapped onto the docking step, and then the second quartz sleeve is folded down from the top of the tail pipe to the first quartz sleeve. On the barrel, until the Nth quartz sleeve is stacked on the N-1th quartz sleeve;
3)N个石英套筒安装完毕后，将光纤预制棒垂直通过炉口金属气板挂入拉丝炉内，并使炉口金属气板上的炉口气封口密闭；3) After the installation of the N quartz sleeves, the optical fiber preform is vertically traversed into the drawing furnace through the metal gas plate of the furnace mouth, and the gas sealing mouth of the furnace mouth metal gas plate is sealed;
4)打开炉口金属气板上的炉口气封口，正常升温掉头拉丝。4) Open the furnace mouth gas seal on the metal gas plate of the furnace mouth, and normalize the temperature and pull the wire.
本申请通过小尾管对接均匀大直径光纤预制棒，节约了材料成本，并且在小尾管上安装上多个与光纤预制棒的直径相同的石英套筒，特别是在石英套筒上设置了上口环槽，不仅保证了两两石英套筒间的密封性和安装的精确度，而且也方便石英套筒的安装，还使进棒量和炉子功率始终保持不变，保证小尾管装置进炉后拉丝炉内气流和温场稳定，从而稳定丝径波动，实现了自动拉丝；与此同时在拉丝炉口设置气封，防止空气进入炉内，保证了拉丝炉内气流和温场的稳定，预防石墨件氧化，提高光纤强度。The present invention saves the material cost by docking the uniform large-diameter optical fiber preform through the small tail pipe, and installs a plurality of quartz sleeves of the same diameter as the optical fiber preform on the small tail pipe, especially the upper sleeve is set on the quartz sleeve. The ring groove not only ensures the tightness between the two quartz sleeves, but also the accuracy of the installation. It also facilitates the installation of the quartz sleeve, and keeps the amount of the rod and the power of the furnace constant, ensuring that the small tail pipe device enters the furnace. The airflow and temperature field in the drawing furnace are stable, thereby stabilizing the wire diameter fluctuation and realizing automatic drawing; at the same time, a gas seal is arranged at the drawing furnace mouth to prevent air from entering the furnace, thereby ensuring the stability of the airflow and the temperature field in the drawing furnace, and preventing The graphite material is oxidized to increase the strength of the fiber.
综上，本申请的优点在于保证炉内气流和温场的稳定，保证了丝径波动的稳定，延长了石墨件使用寿命，降低了光纤的生产成本，大幅度提高了拉丝效率，具有较大的推广应用价值。In summary, the utility model has the advantages of ensuring the stability of the airflow and the temperature field in the furnace, ensuring the stability of the wire diameter fluctuation, prolonging the service life of the graphite piece, reducing the production cost of the optical fiber, greatly improving the drawing efficiency, and having a larger The value of promotion and application.
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：Various other advantages and benefits will become apparent to those skilled in the art from a The drawings are only for the purpose of illustrating the preferred embodiments and are not intended to be limiting. Throughout the drawings, the same reference numerals are used to refer to the same parts. In the drawing:
图1为本申请的预制棒和尾管对接示意图。其中，1-尾管，2-光纤预制棒，3-对接台阶。Figure 1 is a schematic view of the docking of the preform and the tail pipe of the present application. Among them, 1-tail tube, 2-fiber preform, 3-butt step.
图2为本申请的石英套管安装完毕示意图。其中，4-石英套筒。Figure 2 is a schematic view showing the installation of the quartz sleeve of the present application. Among them, 4-quartz sleeve.
图3为石英套筒连接处结构的放大图。Figure 3 is an enlarged view of the structure of the quartz sleeve joint.
图4为本申请的尾棒进炉示意图。其中，5-拉丝炉，6-炉口气封口，7-炉口金属气板。Figure 4 is a schematic view of the tail rod of the present application. Among them, 5-drawing furnace, 6-furnace gas sealing, 7-mouth metal gas plate.
下面将参照附图更详细地描述本公开的示例性实施方式。虽然附图中显示了本公开的示例性实施方式，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施方式所限制。相反，提供这些实施方式是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the invention may be embodied in various forms and not limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be more fully understood, and the scope of the disclosure can be fully conveyed to those skilled in the art.
根据本申请的实施方式，提出一种光纤预制棒自动拉丝装置，见图1-图4，包括尾管1，光纤预制棒2，对接台阶3，石英套筒4，拉丝炉5，炉口气封口6，炉口金属气板7；所述尾管1的直径小于光纤预制棒2的直径，所述光纤预制棒2与尾管1高温熔接在一起形成对接台阶3，对接台阶3与光纤预制棒2垂直，N个上下叠放的石英套筒4套设在尾管1外侧并卡装在对接台阶3上，N≥3，光纤预制棒2垂直通过炉口金属气板7挂入拉丝炉5内，炉口气封口6设置在炉口金属气板7上。According to an embodiment of the present application, an optical fiber preform automatic wire drawing device is provided, as shown in FIG. 1 to FIG. 4, including a tail pipe 1, an optical fiber preform 2, a docking step 3, a quartz sleeve 4, a drawing furnace 5, and a mouth gas sealing port. 6, the furnace mouth metal gas plate 7; the diameter of the tail pipe 1 is smaller than the diameter of the optical fiber preform 2, the optical fiber preform 2 and the tail pipe 1 are welded together at high temperature to form a docking step 3, the docking step 3 and the optical fiber preform 2 vertical, N sets of quartz sleeves 4 stacked on top of each other are sleeved on the outside of the tail pipe 1 and are clamped on the docking step 3, N≥3, and the optical fiber preform 2 is vertically hanged through the furnace metal gas plate 7 into the drawing furnace 5 Inside, the furnace mouth gas seal 6 is disposed on the furnace mouth metal gas plate 7.
根据上述光纤预制棒自动拉丝装置，还提出了一种光纤预制棒自动拉丝装置的自动拉丝方法，包括以下步骤：According to the above-mentioned optical fiber preform automatic wire drawing device, an automatic wire drawing method for an optical fiber preform automatic wire drawing device is also proposed, which comprises the following steps:
1)先将光纤预制棒2与尾管1高温熔接在一起，形成对接台阶3，如图1；1) Firstly, the optical fiber preform 2 and the tail pipe 1 are welded together at high temperature to form a docking step 3, as shown in Fig. 1;
2)当尾管最小长度为950mm时，设定石英套筒高度为300mm，放置石英套筒的个数为3个，首先将第一个石英套筒4从尾管1顶部向下套设并卡装到对接台阶3上，接着将第二个石英套筒4从尾管1顶部向下套设叠放到第一个石英套 筒4边沿上的环槽内，再接着将第三个石英套筒4从尾管1顶部向下套设叠放到第二个石英套筒4边沿上的环槽内，如图2、如图3；2) When the minimum length of the tail pipe is 950mm, the height of the quartz sleeve is set to 300mm, and the number of quartz sleeves is set to three. First, the first quartz sleeve 4 is sleeved downward from the top of the tail pipe 1 and The card is attached to the docking step 3, and then the second quartz sleeve 4 is sleeved down from the top of the tail pipe 1 to the ring groove on the edge of the first quartz sleeve 4, and then the third quartz is placed. The sleeve 4 is sleeved down from the top of the tail pipe 1 to the annular groove on the edge of the second quartz sleeve 4, as shown in FIG. 2 and FIG. 3;
3)3个石英套筒安装完毕后，将光纤预制棒2垂直通过炉口金属气板7挂入拉丝炉5内，并使炉口金属气板7上得炉口气封口6封闭，如图4；3) After the installation of the three quartz sleeves, the optical fiber preform 2 is vertically traversed into the drawing furnace 5 through the metal gas plate 7 of the furnace mouth, and the furnace gas sealing port 6 on the metal gas plate 7 of the furnace mouth is closed, as shown in FIG. ;
4)打开炉口金属气板7上的炉口气封6，正常升温掉头拉丝。4) Open the furnace mouth gas seal 6 on the metal gas plate 7 of the furnace mouth, and normalize the temperature and pull the wire.
本申请光纤预制棒自动拉丝装置中采用的石英套管成本非常低，而且可以重复利用，解决了尾棒人为不停干预问题，保证进棒量和炉子功率始终保持不变；同时拉丝炉口气封口的设置，防止空气进入炉内，预防石墨件氧化，两者协同保证拉丝炉内气流和温场的稳定，从而稳定丝径波动，实现了自动拉丝的目的。The quartz sleeve used in the automatic drawing device of the optical fiber preform of the present application has very low cost and can be reused, and solves the problem that the tail rod is constantly intervened, ensuring that the amount of the rod and the power of the furnace are always kept unchanged; and the mouthpiece of the drawing furnace is sealed at the same time. The setting prevents the air from entering the furnace and prevents the oxidation of the graphite parts. The two cooperate to ensure the stability of the airflow and the temperature field in the drawing furnace, thereby stabilizing the wire diameter fluctuation and realizing the purpose of automatic wire drawing.
以上所述，仅为本申请较佳的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。The above description is only a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed in the present application. Replacement should be covered by the scope of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.
Claims (6)
- 一种光纤预制棒自动拉丝装置，其特征在于，包括尾管(1)，光纤预制棒(2)，对接台阶(3)，石英套筒(4)，拉丝炉(5)，炉口气封口(6)，炉口金属气板(7)；所述尾管(1)的直径小于光纤预制棒(2)的直径，所述光纤预制棒(2)与尾管(1)高温熔接在一起形成对接台阶(3)，对接台阶(3)与光纤预制棒(2)垂直，N个上下叠放的石英套筒(4)套设在尾管(1)外侧并卡装在对接台阶(3)上，N≥3，光纤预制棒(2)垂直通过炉口金属气板(7)挂入拉丝炉(5)内，炉口气封口(6)设置在炉口金属气板(7)上。An optical fiber preform automatic wire drawing device, comprising: a tail pipe (1), an optical fiber preform (2), a butt joint (3), a quartz sleeve (4), a drawing furnace (5), a furnace mouth gas sealing mouth ( 6) a furnace mouth metal gas plate (7); the diameter of the tail pipe (1) is smaller than the diameter of the optical fiber preform (2), and the optical fiber preform (2) and the tail pipe (1) are welded together at a high temperature to form The docking step (3), the docking step (3) is perpendicular to the optical fiber preform (2), and the N upper and lower stacked quartz sleeves (4) are sleeved on the outer side of the tail pipe (1) and are clamped on the butting step (3) Above, N≥3, the optical fiber preform (2) is vertically inserted into the drawing furnace (5) through the metal gas plate (7) of the furnace mouth, and the gas sealing port (6) of the furnace mouth is arranged on the metal gas plate (7) of the furnace mouth.
- 根据权利要求1所述的光纤预制棒自动拉丝装置，其特征在于，相邻所述石英套筒(4)之间设置了无缝连接机构。The optical fiber preform automatic wire drawing device according to claim 1, characterized in that a seamless connection mechanism is provided between adjacent quartz sleeves (4).
- 根据权利要求2所述的光纤预制棒自动拉丝装置，其特征在于，所述无缝连接机构为设置在石英套筒(4)边沿上的环槽。The optical fiber preform automatic wire drawing device according to claim 2, wherein the seamless connection mechanism is a ring groove provided on a rim of the quartz sleeve (4).
- 根据权利要求1或2所述的光纤预制棒自动拉丝装置，其特征在于，所述石英套筒(4)的内径比尾管(1)直径大4mm，石英套筒(4)的外径与光纤预制棒(2)的直径相同。The optical fiber preform automatic wire drawing device according to claim 1 or 2, wherein the inner diameter of the quartz sleeve (4) is larger than the diameter of the tail pipe (1) by 4 mm, and the outer diameter of the quartz sleeve (4) is The optical fiber preform (2) has the same diameter.
- 根据权利要求1或2所述的光纤预制棒自动拉丝装置，其特征在于，当尾管(1)最小长度为950mm时，设定石英套筒(4)高度为300mm，放置石英套筒(4)的个数为3个。The optical fiber preform automatic wire drawing device according to claim 1 or 2, wherein when the minimum length of the tail pipe (1) is 950 mm, the height of the quartz sleeve (4) is set to 300 mm, and the quartz sleeve is placed (4). The number of ) is three.
- 一种利用权利要求1-5之一所述的光纤预制棒自动拉丝装置的自动拉丝方法，其特征在于，包括以下步骤：An automatic drawing method for an optical fiber preform automatic drawing device according to any one of claims 1 to 5, characterized in that it comprises the following steps:1)先将光纤预制棒(2)与尾管(1)高温熔接在一起，形成对接台阶(3)；1) Firstly, the optical fiber preform (2) and the tail pipe (1) are welded together to form a butt joint (3);2)然后将第一个石英套筒(4)从尾管(1)顶部向下套设并卡装到对接台阶(3)上，接着将第二个石英套筒(4)从尾管(1)顶部向下套设叠放到第一个石英套筒(4)上，如此直到第N个石英套筒(4)叠放到第N-1个石英套筒(4)上；2) Then the first quartz sleeve (4) is sleeved down from the top of the tail pipe (1) and snapped onto the butt step (3), and then the second quartz sleeve (4) is removed from the tail pipe ( 1) The top is sleeved down onto the first quartz sleeve (4) so that the Nth quartz sleeve (4) is stacked on the N-1th quartz sleeve (4);3)N个石英套筒(4)安装完毕后，将光纤预制棒(2)垂直通过炉口金属气板(7)挂入拉丝炉(5)内，并使炉口金属气板(7)上的炉口气封口(6)密闭；3) After the installation of N quartz sleeves (4), the optical fiber preform (2) is vertically traversed into the drawing furnace (5) through the metal gas plate (7) of the furnace mouth, and the metal gas plate of the furnace mouth (7) The upper furnace mouth seal (6) is sealed;4)打开炉口金属气板(7)上的炉口气封口(6)，正常升温掉头拉丝。4) Open the furnace mouth gas seal (6) on the metal gas plate (7) of the furnace mouth, and normalize the temperature and pull the wire.
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| CN201710072103.2 | 2017-02-07 | ||
| CN201710072103.2A CN106810065B (en) | 2017-02-07 | 2017-02-07 | Automatic fiber drawing device and automatic fiber drawing method for optical fiber preform |
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| CN106810065B (en) * | 2017-02-07 | 2020-01-10 | 通鼎互联信息股份有限公司 | Automatic fiber drawing device and automatic fiber drawing method for optical fiber preform |
| CN107311445B (en) * | 2017-08-14 | 2023-01-17 | 江苏法尔胜光电科技有限公司 | Polarization maintaining optical fiber preform |
| CN108164131B (en) * | 2017-12-29 | 2023-11-03 | 通鼎互联信息股份有限公司 | Non-intervention type large-outer-diameter fluctuation optical fiber preform wire drawing sealing device and wire drawing method |
| CN111056741B (en) * | 2020-01-08 | 2024-01-16 | 通鼎互联信息股份有限公司 | Sealing device and sealing method for tail handle of optical fiber preform |
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