JPH09203828A - Jelly packing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently adhere and pack jelly to a cable core. SOLUTION: This device has an applying and packing section 2 which is formed to nearly a hollow columnar shape so as to allow the cable core to be coated and applied with the jelly 10 to travel and is opened with a jelly press-feeding port for supplying the pressurized jelly in part of the peripheral wall, air-jelly separating devices 5 which are disposed symmetrically on the upstream side and downstream side of this applying and packing section 2 and cooling cylinders 4 which are disposed symmetrically with each other on the upstream side and downstream side of these air-jelly separating devices 5. The air-jelly separating devices 5 have inclined separating plates 51 bored with separating holes 51A at the centers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a jelly filling device, more specifically, a jelly-like waterproofing compound attached to a general cable core before an outer sheath is applied.
It relates to a filling method.

[0002]

2. Description of the Related Art FIG. 3 shows a cross section of a cable core 1 formed by twisting a plurality of loose tubes 12 containing an optical fiber core wire 13 around a tension member 14.
Before the outer sheath is applied to this, in order to ensure waterproofness, the cable core 1 is immersed in a waterproof compound usually called jelly, and the jelly is attached to the periphery thereof.

FIG. 4 shows a conventional filling tank 1 used for this purpose.
No. 01, which allows the cable core 1 to run at both ends but prevents the jelly 10 from leaking.
It is a hollow cylindrical container in which 8 is disposed, and a heating device 106 is provided around the container and is surrounded by a heat insulating layer 107 to prevent a temperature decrease. Reference numeral 108A indicates a cooling fin for cooling to reduce the fluidity of the jelly.

The cable core 1 is immersed in the jelly 10 while traveling along the central axis of the filling tank 101. The jelly 10 is pressure-fed from the pump 109 into the filling tank with an appropriate pressure, whereby the inside of the filling tank 101 is maintained at a desired pressure and the consumption of the jelly 10 is constantly replenished. Reference numeral 100 denotes a tube that overflows the jerry 10.

[0005]

In the case of the conventional jelly filling method using the above-mentioned conventional apparatus, the gaps between the filamentary strips produced during the twisting or simply grouping shown in FIG. There was a drawback that Jerry didn't get enough.

[0006]

The present invention has been made to solve the above-mentioned problems, and the solution according to the invention of claim 1 is to make a cable core to be coated and filled with jelly run. A coating / filling portion having a substantially hollow columnar shape, in which a jelly pressure inlet for supplying a pressurized jelly to a part of the peripheral wall is opened, and air / jelly symmetrically provided upstream and downstream of the coating and filling portion. The air / jelly separating device has a separating device and cooling tubes symmetrically provided on the upstream side and the downstream side of each of the air / jerry separating devices. The jelly filling device is characterized by comprising a separating plate.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus according to an embodiment of the present invention will be described with reference to FIGS. Hollow cylindrical coating and filling section 2
Is surrounded by a suitable heating device 3 such as a steam jacket and optionally a heat insulating material (not shown) in which the cable core 1 runs from right to left in the figure. The jelly pressure inlet 21 is opened in a part of the peripheral wall of the coating and filling unit 2, and the pressurized jelly 10 is supplied from here.

On the inlet side and outlet side of the cable core 1 of the coating / filling section 2, that is, on the upstream side and the downstream side, air / jelly separating devices 5 are provided symmetrically to each other. The air / jelly separation device 5 will be described later.

Hollow cylindrical cooling tubes 4 are coaxially attached to the upstream side of the upstream air / jelly separating apparatus 5 and the downstream side of the downstream air / jelly separating apparatus 5, respectively. The cooling cylinder 4 is a die having a long axial length, which has an inner diameter slightly larger than the outer diameter of the cable core to be treated, and therefore defines a clearance 42 having an annular cross section with the cable core 1. Further, a jacket type cooling device 41 for circulating an appropriate refrigerant, for example, water is provided on the outer peripheral portion of the cooling cylinder 4.

The detailed structure of the air / jelly separation device 5 will be described with reference to FIG. The air / jelly separating device 5 has a separating plate 51 inside a box having a substantially rectangular parallelepiped shape.
The separation plate 51 is provided with an inclination of 5 degrees, and in the inclined state, a separation hole 51A is formed to define a slight clearance with respect to the traveling cable core 1.

Both the upstream side and the downstream side separation plates 51 are inclined so that their inclined lower surfaces face the coating and filling section 2 side, and the internal space of the apparatus box is divided into an air side chamber 52 and a jelly side chamber 53. To do. An exhaust pump 7 is communicatively connected to an upper portion of the air side chamber 52, and a discharge pipe for dropping and discharging the jelly 10 from the lower end of the jelly side chamber 53 toward a lower jerry receiving box is provided.

Next, the operation of the device of the present invention will be described. Before the cable core 1 enters the coating and filling section 2, the air accompanying it is exhausted by the exhaust pump 7 in the upstream air / jelly separating device 5, so that the air layer around the cable core 1 is It becomes extremely thin and enters the coating and filling section 2.

Therefore, the cable core 1 is effectively coated and filled with the jelly 10 inside the coating and filling section 2.
Next, the operation of the downstream air / jelly separating device 5 will be described. The extra jelly 10 attached to the cable core 1 is scraped off by the separating plate 51 and dropped into the jerry receiving box below.

On the other hand, the outside air vigorously flows into the air-side chamber 52 whose pressure is reduced by the exhaust pump 7 through the clearance 42 of the cooling cylinder 4, so that the cooling jacket 41 works together with the cooling air. It is possible to efficiently cool the surroundings, and thus to reduce the fluidity of the jelly 10 and to greatly reduce the amount of jelly that passes through the cooling cylinder 4 and is discharged to the outside.

[0015]

As described above, according to the present invention, the air accompanying the cable core in the upstream air / jelly separating device is first removed near the inlet of the coating and filling section. Has the effect of efficiently applying it to the surface of the cable core and filling it into the internal gaps. Furthermore, while the jelly is separated and discharged in the air / jelly separating device on the downstream side, the cooling cylinder is externally supplied from the downstream side The periphery of the cable core 1 is efficiently cooled by the air that flows in vigorously through the clearance, so that the amount of jelly discharged to the outside after passing through the cooling cylinder 4 can be significantly reduced. .

[Brief description of drawings]

FIG. 1 is a side sectional view showing an apparatus according to an embodiment of the present invention.

2 is an enlarged side sectional view showing the vicinity of the air / jelly separation device of FIG. 1. FIG.

FIG. 3 is a cross-sectional view showing an example of a cable core to which the present invention is applied.

FIG. 4 is a side sectional view showing an example of a conventional jelly filling device.

[Explanation of symbols]

 1 Cable Core 2 Coating and Filling Part 21 Jerry Pressing Port 3 Heating Device 4 Cooling Cylinder 41 Cooling Jacket 42 Clearance 5 Air / Jerry Separation Device 51 Separation Plate 51 Separation Hole 52 Air Side Chamber 53 Jerry Side Chamber 6 Die 7 Exhaust Pump 10 Jerry

Claims (1)

[Claims] 1. A jelly pressurizing port (21) which has a substantially hollow cylindrical shape so as to run a cable core (1) to be coated and filled with jelly (10) and which supplies a pressurized jelly to a part of a peripheral wall. A coating / filling section (2) having an opening, an air / jelly separating device (5) symmetrically provided on the upstream side and the downstream side of the coating / filling section (2), and each of the air /
A cooling cylinder (4) symmetrically provided on the upstream side and the downstream side of the jelly separation device (5);
The jelly separating device (5) is provided with a separating plate (51) having a separation hole (51A) formed in the center thereof and being inclined, and a jelly filling device.