JP2000066068A - Coating device for wire body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an irregular thickness part from being formed as far as possible by rotating an entire device or a part of the device and uniformly feeding resin for forming a coating film to the entire peripheral surface of a wire body. SOLUTION: A rotating body 2 is constituted of an external member 2A provided with a die D at its lower part and an internal member 2B provided with a nipple N at its lower part, and an optical fiber 50 travels and passes through the center hole 21 of the member 2B. A flange part 23 provided with a rotating gear 22 meshed with the driving gear 32 of a driving mechanism 3 is formed on the outer peripheral surface of the member 2A. The resin with which the optical fiber 50 is coated is supplied to space between the members 2A and 2B just from above. The resin for coating which is always supplied from a fixed position just above a liquid accumulation part 2C is equally supplied to the inside of the part 2C by the rotating action of the rotating body 2, and also equally fed to space between the die D and the nipple N, so that it is prevented from being irregularly fed to one part, and uniform film thickness is always formed on the optical fiber 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to an apparatus for coating a striatum, which has a passage hole passing therethrough at a central portion, and coats a coating film on a striatum passing through the passage hole.

[0002]

2. Description of the Related Art For example, in order to coat an outer peripheral surface of an optical fiber (which may be a bare optical fiber or a coated optical fiber) with a protective film, various coating apparatuses have been developed and used as is well known.

[0003]

However, in this coating apparatus, there may be a case where the thickness of the protective film that covers the periphery of the optical fiber is uneven, and the thickness of the protective film is prevented. No special measures have been taken to do so.

Accordingly, an object of the present invention is to provide an apparatus for coating a striated body that can prevent the occurrence of uneven thickness portions as much as possible in view of the above-mentioned drawbacks.

[0005]

Means for Solving the Problems That is, this claim 1
The invention described in the above is a linear body coating apparatus that has a central hole through which the striated body travels and passes and coats the coating film on the striated body passing through the central hole, The whole or a part of the coating device is configured to rotate around a central portion through which the striated body travels and passes, and a resin for forming a coating film is uniformly applied to the entire peripheral surface of the striated body. It is intended to be sent.

[0006]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an optical fiber coating apparatus according to the present invention.
The optical fiber coating apparatus includes a support 1, a rotatable rotator 2, and a drive mechanism 3 that drives the rotator to rotate.

The support 1 rotatably supports the rotating body 2.
In this embodiment, the first hole provided in the center hole 11 is provided.
The rotating body 2 includes the bearing portion 12 and the second bearing portion 13 provided on the upper portion.
I support.

The rotator 2 is composed of an outer member 2A having a lower die and an inner member 2B having a nipple at a lower portion.
Is running and passing. Also, the outer member 2A
A flange 23 provided with a rotary gear 22 that meshes with the drive gear 32 of the drive mechanism 3 is formed on the outer peripheral surface of the drive mechanism 3. In addition,
The resin for coating the optical fiber 50 is supplied from directly above to a space (a liquid reservoir 2C) provided between the outer member 2A and the inner member 2B.

The drive mechanism 3 includes a motor 31 and the motor 3
In this embodiment, the rotation speed is adjusted and changed according to the thickness of the film to be coated.

Therefore, according to this embodiment, the liquid reservoir 2
The coating resin which is always supplied from a fixed position immediately above C (that is, even if it is not moved by moving around the supply section along the entire peripheral surface of the optical fiber), the coating resin is supplied by the rotating action of the rotating body 2. Since it is uniformly supplied into the inside of the 2C and is evenly sent out between the dice D and the nipple N, it is not unbalancedly sent to a part, and a uniform film thickness is always formed on the optical fiber 50. Go.

[0011]

As described above, according to the present invention, the whole or a part of the coating apparatus is rotated around the central portion for feeding out the striated body. Even if it is supplied, the resin is uniformly fed by the rotating action of the rotating coating device, and the coating film can be uniformly coated on the striatum, so that a high-quality coating device is provided. Can be provided.

Further, according to the present invention, uniform resin coating can be performed without a mechanism for rotating and moving the resin supply device, so that the resin supply device can be simplified at the same time.

[Brief description of the drawings]

FIG. 1 is an exploded sectional view showing an optical fiber coating apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support body 2 Rotating body 21 Center hole 3 Drive mechanism 50 Optical fiber

Claims (1)

[Claims] 1. A striated body (50) has a center hole (21) at the center thereof through which the striated body (50) travels and passes, and the striated body (50) passing through the center hole (21) is coated with a coating film. A coating device for a striated body, wherein the striated body (50) is configured to rotate the whole or a part of the coating device around a central portion where the striated body (50) travels and passes; Wherein the resin for forming the coating film is uniformly fed to the entire peripheral surface of the striated body.