JPS59151790A - Method of producing multilayer simultaneous winding reinforcing paper of cable connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a multi-layer, one-shot reinforcing paper used to form a reinforcing rim of a connecting portion of a paper insulating tortoise cable.

BACKGROUND OF THE INVENTION Conventionally, seven sheets of oil-impregnated paper were wrapped in multiple layers in order to strengthen the cable connection part.

Therefore, the following proposal has been made (Patent Application No. 97 Bath 1 Treatment in 1982-02).

First, as shown in “Figure 1”, there are many
A multi-layer reinforced paper 10 is made by stacking two layers (referred to as "paper"). This means that both ends are appropriately offset, and at one end each paper 12
There is an adhesive 14 between them. In reality, paper 12 is 10
Stack about 30 sheets.

It is then impregnated with insulating oil and transported to the work site.
．． As shown in Figure 3, the oil-impregnated multilayer reinforcing paper 10a is wound on the cable 20 in at least two layers to form a reinforcing insulator 10b.

Note that the reason why it is wound two or more times as described above is that if it is wound once, the boundary surface 16 tends to become a weak point as shown in the "Illustrated Figure".

By the way, the above multilayer reinforcing paper 10 is made as follows. First, if the radius of the cable 20 Ers and the thickness of the multilayer reinforcement @10 is t, the inner AD warmth and the outer OD length 12 are each one sentence, -2πr + 2π (r + t) =
2π(,?r tent) sentence? tπ(r-1-t)+, 2π(
r+2tl=,2π(,2F-1-3t1.

Therefore, as shown in Figure 5 (a), a predetermined number of sheets of insulating paper were cut to a predetermined length, and one end was stacked one on top of the other so that the other end was in a tapered shape. paper 1
Make 0.

This multilayer reinforcing paper 10 is shown upside down in order to match that shown in FIGS. 1 and 2 (G).
However, until now, the deviation width dlh of the tapered surface of BO is too small, making it difficult to bond and wrap the sheets together.

Therefore, as shown in the same figure (c), Qi< surface deviation width d4,
By increasing d5, the deviation d between each paper 12 (Fig. 1) is
It needs to be at least 5 friends.

However, since the width of each paper 12 (width in the direction perpendicular to the paper surface in Figures 1 and S) is quite wide, the large number of stacked papers 12 are neatly shifted, and each paper 12 is separated by d as described above.
It is not easy to create a misalignment of 0. The object of the invention is to provide a method that can easily create the above-mentioned appropriate misalignment.

Structure of the invention Generally 1. When multiple lengths of paper are piled up and wrapped around a cylinder, the radius of winding is different for the inner and outer papers, so even if they are lined up at the beginning, they will be misaligned at the end.

The present invention utilizes this phenomenon, and as shown in "Figures 7 to 11", 1) As shown in the above "JmJ (b)," a large number of papers are stacked and cut to a predetermined length to form a multilayer After making the reinforcing paper 10, first press the edge of the BO side with the Taber direction so that each layer of paper does not shift from each other. Wind it so that the winding is on the 6th side (@7, Figure g), and add a misalignment of 1 to the end on the AD side.
2) Next, at the AD side end, press the paper of each layer so that they do not shift from each other in the same manner as above (Fig. 9), and remove the presser foot 40 on the BO side. , Wrap the multilayer reinforcing paper 10 around another winding core 52 so that the tapered surface of AD is on the winding 6 side (Fig. Ka10), and adjust the shift of the BO end in the Taper direction by t%.
a3 'IL'T8 Make it very large (Figure 17).

3) The above steps are repeated as necessary to make the deviation width of the tapered surfaces at both ends of the multilayer reinforcing paper 10 to a predetermined length.

More detailed explanation of the procedure (1) First, stack the required number of sheets of paper and cut them into the shape shown in Figure S (b) above.

(Then, as shown in Figure 3, press only the edge near the BO side where the taper is with a metal member 40 to prevent each layer of paper from shifting from one another. Any object may be used as long as it can be held without damaging it.

(3) Then, as shown in "Figure a7, !i'", the multilayer reinforcing paper 10 is wound around the core 50 of a predetermined diameter. At that time, make sure that the tennis side of BO is on the winding 6 side,
Wind it in order from the BO side (you may rotate the winding center 50).

Then, the deviation width d2 at the AD side end is one Te -,,<
#-r @ru0 fg1 Next, as shown in "Figure 7", hold near the end on the AD side with the metal fitting 42, and remove the metal fitting 40 on the BO side.

(5) Then, as shown in "Maki 10", wind it around another winding core 52 of a predetermined diameter so that the tapered surface of AD is on the winding 6 side.

Then, what was wound around the winding core 50 first is unwound one after another, and the deviation width d of the taper at the BO end is shown in "Figure 1/".
3 is considerably larger than the initial d-engine.

(Part 2) Repeat the above steps as many times as necessary, and then
As shown in Figure (0), the deviation widths d4 and d5 at both ends are set to predetermined lengths.

With the above steps, a predetermined multilayer reinforcing paper 10 is obtained.

Incidentally, after that, all the sheets are glued together, and conventionally, each sheet is glued to size 14 one by one as shown in "Fig. 12". However, this takes time, so it is better to do it as follows.

That is, from the state shown in FIG. 13 (a) to the state shown in FIG. 13 (b), the shifted portions of the ends are shifted in the opposite direction at uniform intervals. Then, apply adhesive 14 to the shifted part and
) and press.

In this way, the gluing width becomes uniform and it becomes possible to gluing with good cultivability.

Effects of the Invention Even when the number of stacked sheets of paper is large and the length and width are long, the shift width at both ends of the multilayer reinforcing paper 10 can be easily made to a predetermined length.

[Brief explanation of the drawing]

1 to 5 are for explaining the present invention in detail. FIG. 1 is a schematic diagram of the multilayer reinforcing paper 10, and FIGS.
The figure is an explanatory diagram of how to make a reinforcing insulator, Figure 11 is an explanatory diagram of a case where multilayer reinforcing paper is rolled into seven layers, and aS diagram (a) (b) (0) is an explanatory diagram of how to make multilayer reinforcing paper 10. , FIG. 6, FIG. 7, FIG. is an explanatory diagram of the method, @Figure 13 (
a)(t))(0) is an explanatory diagram of another method of gluing size. 10: Multilayer reinforcing paper 12: Insulating paper 14: F! ! : Adhesive 40 and 42 : Presser fittings 50 and 52 = Winding core Patent applicant: Fujikura WL Line Co., Ltd. Agent: Kei Kunite 8 Figure 10

Claims (1)

[Claims] In the case where a multilayer reinforcing paper formed by rolling a large number of @fine layers is wound on a cable at once to form reinforcing insulation tj+-Nasugi, the multilayered reinforcing paper is manufactured at once. For this purpose, cut a large number of insulating papers to a specified length, align one end, and align the ffm
A multi-layer V1 reinforcing paper is made by fusing the edges so that they become tapered in order, and the tapered surface of the multi-layer reinforcing paper? Hold the end of each insulating paper so that they do not shift from each other. 1. Then, wrap the multilayer reinforcing paper around a core of a predetermined diameter so that the tapered surface of the paper is on each side. As a result, a tapered surface is formed at the opposite end, or the deviation width of the existing tapered surface is increased, and then the opposite end of the multilayer reinforcing paper is cut so that each insulating paper does not shift from each other. and remove the presser at the end of the winding 4JR, and then wrap the multilayer reinforcing paper around the winding core and another winding core so that the tapered surface is on each side of the winding. increasing the deviation width of the tapered surface at the end on the side where the presser is removed, and then repeating the above operation as necessary to make the deviation width of the tapered surface at both ends of the multilayer reinforcing paper to a predetermined length; A set of multi-layered one-shot winding reinforcements for cable connections characterized by;
manufacturing method.