阅读说明：本技术 光纤束涂覆模具、光纤束涂覆固化工艺和设备 (Optical fiber bundle coating die, optical fiber bundle coating curing process and equipment ) 是由 马春平 计中华 姚子锋 程帆 王俊斐 于 2019-11-21 设计创作，主要内容包括：本发明公开了一种光纤束涂覆固化模具、光纤束涂覆固化设备及光纤束光纤束涂覆固化工艺,该工艺包括以下步骤：(1)光纤束一次涂覆,位于光纤束外部产生着色标识涂层；(2)一次涂覆后的光纤束直接进入二次涂覆,位于着色标识涂层外部产生透明的成束涂层；(3)二次涂覆后的多根光纤一次固化成型为光纤束。本发明第一次涂覆在光纤束外部涂覆产生着色标识涂层,随后直接进入第二次涂覆,在着色标识涂层的外部涂覆产生透明成束涂层,最后进入光固化。UV固化光直接照射成束涂层,部分的UV固化光透过透明的成束涂层照射内部的着色标识涂层,一次光固化同时固化着色标识涂层和成束涂层,缩短工艺路径,节约加工工时,提高加工效率,降低加工成本。(The invention discloses an optical fiber bundle coating and curing mold, optical fiber bundle coating and curing equipment and an optical fiber bundle coating and curing process, wherein the process comprises the following steps: (1) performing primary coating on the optical fiber bundle, and generating a coloring identification coating outside the optical fiber bundle; (2) the optical fiber bundle after primary coating directly enters secondary coating, and a transparent bundled coating is generated outside the coloring identification coating; (3) and curing and molding the plurality of optical fibers subjected to secondary coating into the optical fiber bundle. The invention is coated outside the optical fiber bundle for the first time to generate a colored identification coating, then directly enters the second coating, is coated outside the colored identification coating to generate a transparent bundled coating, and finally enters the photocuring. The UV curing light directly irradiates the beam-forming coating, part of the UV curing light irradiates the coloring identification coating inside through the transparent beam-forming coating, and the coloring identification coating and the beam-forming coating are simultaneously cured by one-time light curing, so that the process path is shortened, the processing time is saved, the processing efficiency is improved, and the processing cost is reduced.)

1. A coating and curing process for an optical fiber bundle is characterized by comprising the following steps: comprises the following steps of (a) carrying out,

(1) performing primary coating on the optical fiber bundle, and generating a coloring identification coating outside the optical fiber bundle;

(2) the optical fiber bundle after primary coating directly enters secondary coating, and a transparent bundled coating is generated outside the coloring identification coating;

(3) and curing and molding the optical fiber bundle subjected to secondary coating at one time.

2. The fiber bundle coating curing process of claim 1, wherein: in the step (1), the optical fibers are sized and bundled into the optical fiber bundle, and the colored identification coating is generated outside the whole optical fibers.

3. The fiber bundle coating curing process of claim 1, wherein: in the step (3), curing and forming are performed based on the irradiation of curing light, wherein part of light energy of the curing light acts on the external bundled coating, and part of light energy penetrates through the bundled coating and acts on the internal coloring identification coating.

4. The fiber bundle coating curing process of claim 1, wherein: the coating of the bundle coating is resin.

5. The fiber bundle coating curing process of claim 1, wherein: the paint of the coloring identification coating is coloring ink.

6. The utility model provides an optic fibre bundle coating mould, includes the mould body which characterized in that: the die cavity of the die body is divided into a primary coating die cavity and a secondary coating die cavity, and the primary coating die cavity and the secondary coating die cavity are sequentially arranged along an optical fiber path; the die body is provided with a primary coating channel communicated to the primary coating die cavity and a secondary coating channel communicated to the secondary coating die cavity; when the optical fiber bundle passes through the primary coating die cavity, a colored identification coating is generated outside the optical fiber bundle; the optical fiber bundle passes through the secondary coating die cavity and is positioned outside the pigmented indicia coating to produce a transparent bundled coating.

7. The optical fiber bundle coating die of claim 6, wherein: be equipped with the sizing die between primary coating die cavity and the secondary coating die cavity in the die cavity, primary coating die cavity and secondary coating die cavity quilt the sizing die is separated, be equipped with the sizing die cavity in the sizing die, many optic fibre get into the secondary coating die cavity through the sizing die cavity, many optic fibre are tied in a bundle when passing through the sizing die cavity and are done the optic fibre bundle.

8. The optical fiber bundle coating die of claim 6, wherein: the die cavity is also divided into an air suction die cavity, and the air suction die cavity, the primary coating die cavity and the secondary coating die cavity are sequentially arranged along the optical fiber path; the die body is provided with an air exhaust channel communicated to the air exhaust die cavity.

9. The optical fiber bundle coating die of claim 8, wherein: and a transition die is arranged between the air exhaust die cavity and the primary coating die cavity in the die cavity, the air exhaust die cavity and the primary coating die cavity are separated by the transition die, the transition die cavity is arranged in the transition die, and the optical fiber enters the primary coating die cavity through the transition die cavity.

10. An optical fiber bundle coating and curing device comprises a coating device and a curing device, and is characterized in that: the coating apparatus uses the optical fiber bundle coating die according to any one of claims 6 to 9, in which an optical fiber bundle is coated from the inside to the outside with a colored marking coating and a transparent bundle coating, and the optical fiber bundle coated by the optical fiber coating die is cured in the curing apparatus.

Technical Field

The invention relates to the technical field of optical fibers, in particular to a coating and curing process for an optical fiber bundle; an optical fiber bundle coating die, and an optical fiber bundle coating curing apparatus using the same.

Background

The optical fiber bundle is required to have identification performance under some use environments, for example, a colored ink is coated on the optical fiber bundle, and the identification is carried out through the color of the ink. Currently, two processes are commonly used to obtain fiber bundles with identification: the first process comprises the following steps: primary coating and primary coating photocuring, and bundling a plurality of optical fibers into an optical fiber bundle; and secondary coating photocuring, wherein the coloring ink is coated on the surface of the optical fiber bundle to form the optical fiber bundle with identification, and the process needs two coatings and two photocuring. The second process comprises the following steps: adding the coloring ink into the coating of the bundle coating, and obtaining the optical fiber bundle with identification performance through one-time coating and one-time coating photocuring. It is well known that (1) photocuring of a coating means that the coating is cured after being irradiated with Ultraviolet (UV) light; (2) ultraviolet UV light has good light transmittance to transparent materials and poor light transmittance to inks, especially pigmented inks. In this case, the first process requires two coating and two photocuring steps, so that the process path of coating the fiber bundle with the identifier is long, the processing time is long, the processing efficiency is low, and the processing cost is high. In the second process, although the process path is shortened, the curing degree and the curing effect of the beam coating doped with the coloring ink after curing cannot meet the requirements due to poor light transmittance of ultraviolet UV light to the coloring ink, and the technical defect of easy delamination also exists.

Disclosure of Invention

The invention provides an optical fiber bundle coating and curing process, which is characterized in that an optical fiber bundle with identification is obtained through twice coating and once photocuring, and on the premise of not influencing the curing effect of the optical fiber bundle, the process path is shortened to a certain extent, the processing time is saved, the processing efficiency is improved, and the processing cost is reduced.

The invention provides an optical fiber bundle coating die, which is used for sequentially carrying out primary coloring coating and secondary bundling coating on an optical fiber, wherein a bundling coating is positioned outside a coloring identification coating.

The invention provides an optical fiber bundle coating and curing device, which is used for obtaining an optical fiber bundle with identification through two times of coating and one time of photocuring, shortening the process path to a certain extent on the premise of not influencing the curing effect of the optical fiber bundle, saving the processing time, improving the processing efficiency and reducing the processing cost.

In order to solve the above technical problems, the present invention provides an optical fiber bundle coating and curing process, comprising the steps of,

(1) performing primary coating on the optical fiber bundle, and generating a coloring identification coating outside the optical fiber bundle;

(2) the optical fiber bundle after primary coating directly enters secondary coating, and a transparent bundled coating is generated outside the coloring identification coating;

(3) and curing and molding the optical fiber bundle subjected to secondary coating at one time.

In a preferred embodiment of the present invention, the method further comprises the step (1) of sizing and bundling a plurality of optical fibers into the optical fiber bundle, and generating the colored identification coating outside the whole plurality of optical fibers.

In a preferred embodiment of the present invention, the step (3) further comprises curing the molding by irradiating curing light, wherein part of the curing light can act on the external bundled coating and part of the curing light can act on the internal colored identification coating through the bundled coating.

In a preferred embodiment of the invention, the coating material of the bundle coating layer is resin.

In a preferred embodiment of the present invention, the paint of the colored logo coating layer is colored ink.

In order to solve the technical problem, the invention provides an optical fiber bundle coating die, which comprises a die body, wherein a die cavity of the die body is divided into a primary coating die cavity and a secondary coating die cavity, and the primary coating die cavity and the secondary coating die cavity are sequentially arranged along an optical fiber path; the die body is provided with a primary coating channel communicated to the primary coating die cavity and a secondary coating channel communicated to the secondary coating die cavity; when the optical fiber bundle passes through the primary coating die cavity, a colored identification coating is generated outside the optical fiber bundle; the optical fiber bundle passes through the secondary coating die cavity and is positioned outside the pigmented indicia coating to produce a transparent bundled coating.

In a preferred embodiment of the present invention, a sizing die is further disposed in the die cavity between the primary coating die cavity and the secondary coating die cavity, the primary coating die cavity and the secondary coating die cavity are separated by the sizing die, a sizing die cavity is disposed in the sizing die, a plurality of optical fibers enter the secondary coating die cavity through the sizing die cavity, and the optical fibers are bundled into the optical fiber bundle when passing through the sizing die cavity.

In a preferred embodiment of the present invention, the optical fiber coating device further comprises a suction cavity and a secondary coating cavity, wherein the suction cavity, the primary coating cavity and the secondary coating cavity are sequentially arranged along the optical fiber path; the die body is provided with an air exhaust channel communicated to the air exhaust die cavity.

In a preferred embodiment of the present invention, the optical fiber connector further comprises a transition die disposed in the die cavity between the suction die cavity and the primary coating die cavity, the suction die cavity and the primary coating die cavity are separated by the transition die, the transition die has a transition die cavity therein, and the optical fiber enters the primary coating die cavity through the transition die cavity.

In order to solve the above technical problems, the present invention provides an optical fiber bundle coating and curing apparatus including a coating device using the optical fiber bundle coating die in which an optical fiber bundle is coated from inside to outside with a colored marking coating layer and a transparent bundled coating layer, and a curing device in which the optical fiber bundle coated by the optical fiber coating die is cured.

The invention has the beneficial effects that:

the optical fiber bundle coating and curing process comprises the steps of firstly coating the outer part of an optical fiber bundle to generate a colored identification coating, then directly coating the colored identification coating for the second time, coating the outer part of the colored identification coating to generate a transparent bundle coating, and finally performing photocuring. The UV curing light directly irradiates the bundled coating, part of the UV curing light irradiates the inner colored identification coating through the transparent bundled coating, and the colored identification coating and the bundled coating are simultaneously cured by one-time light curing.

The optical fiber bundle coating die sequentially performs primary coloring coating and secondary bundling coating on the optical fiber bundle bundled by a plurality of optical fibers, and the bundled coating is positioned outside the coloring identification coating.

Thirdly, the optical fiber bundle coating and curing equipment obtains the optical fiber bundle with identification through twice coating and once photocuring, shortens the process path to a certain extent on the premise of not influencing the curing effect of the optical fiber bundle, saves the processing time, improves the processing efficiency and reduces the processing cost.

Drawings

FIG. 1 is a schematic diagram of a fiber bundle coating die in a preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a cured coated optical fiber bundle in accordance with a preferred embodiment of the present invention.

The reference numbers in the figures illustrate: 1-a mould body, 11-an optical fiber; 3-colored marking coating, 5-bundled coating, 7-bundled optical fiber bundle, and 9-bundled optical fiber bundle.

2-a primary coating die cavity, 4-a secondary coating die cavity, 6-a primary coating channel, 8-a secondary coating channel, 10-a sizing die I, 12-an air extraction die cavity, 13-a sizing die II, 14-an air extraction channel and 16-a transition die.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.