JPS59142115A - Method of separating laminated sheath strip - Google Patents

Abstract

PURPOSE:To enable a metal tape and a plastic sheath, which are joined to form a laminated sheath strip, to be separated easily, by pressing the laminated sheath strip between a pair of rotating rolls with the metal tape in contact with the roll surface whose temperature is higher than the other. CONSTITUTION:The laminated sheath piece 3 that has been removed from a cable core, consists of the joined metal tape 31 and plastic sheath 32 and is concave in cross section is inserted between a pair of rotating rolls 1, 2. The roll 1 is kept at normal temperature, and the roll 2 is heated by built-in sheathed heaters (h) or the like. The laminated sheath piece 3 is inserted, with the surface of the metal tape 31 engaged with the surface of the roll 2. The metal tape 31 is heated so that the adhesive is melted or becomes semi-melted state, is pressed and is delivered out, and when the metal tape 31 is away from the rolls 1, 2, the metal tape 31 and the plastic sheath 32 are separated completely.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for separating a metal tape and a plastic sheath of a laminate sheath used for cables and the like.

When disposing of scrap products that use Usanate sheath, which is made by bonding one piece of gold A. It is necessary to separate and collect it. As a specific method in that case, for example,
5-26655, the sanate sheath is separated into a plurality of strips in the longitudinal direction using a cutter, the metal tape surface of the separated sanate sheath strips is heated with a gas burner, etc., and the metal of the sanate sheath is once heated. A winder that winds the tape over the entire area via a guide roller for the metal tape and a guide roller for the plastic sheath, and a winder that winds the plastic sheath so that the tape and the plastic sheath can be easily peeled off. proposed a method in which a 3-layer sheath is separated into a metal tape and a plastic sheath by pulling a metal strip and a plastic sheath.

Although the method proposed above is an effective method for continuously separating laninate sheaths, it
Peel and separate the H tape and plastic sheath.
Unfortunately, separate kite rollers and winders are required for the metal tape and the plastic sheath as a means of peeling, making the device 6 complex and large-scale, and also requiring a huge amount of effort at the start of the work. .

In view of the above-mentioned difficulties, the present invention has been developed as a result of intensive research into a method for separating a plastic sheath into a metal tape and a plastic sheath using a simple device and simple operations. The gold bullion tape surface of the 3-layer sheath strip is placed between at least a pair of rotating rolls having different temperatures. It was discovered that by inserting the plastic tape so that it faces the D-rule surface of the tape and pressing the plastic sheath strip with the at least one pair of rolls, the plastic sheath strip can be easily separated into a metal tape and a plastic sheath. completed.

Hereinafter, the method for separating a sulfate sheath according to the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of the method of the present invention.

In the method of the present invention, for example, a cylindrical sheath piece 6 having a curved cross section, to which a metal chip 531 peeled from a cable (not shown) and a plastic sheath 62 are bonded, is inserted between a pair of rotating rolls 1 and 2. do. The rotating roll 1 is kept at room temperature, for example, and the roll 2 is sheathed and has a built-in roller, etc., as a heating roll, and is installed at a temperature different from that of the roll 1.

When inserting the lining sheath piece 3 between the pair of rolls 1 and 2, the gold bullion tape 3 of the lining sheath piece 6
When inserted in the F direction so that the surface of the roll 2 faces the surface of the roll 2, the trinate sheath piece 5 is pressed by the D-rules 1 and 2, and at the same time is automatically sent out in the F1 direction. When the rear end 3+ of 3 is separated from the 0-rules 1 and 2, the gold bullion chee 31 and the plastic sheath 32 are completely separated.

That is, the minute 11 mechanism between the gold bullion tape 31 and the plastic sheath 32 of the double-sided sheath piece 5 in the method of the present invention is as shown in FIGS. 2(a), (b), and (c). , 2, which has a curved cross-sectional shape (Fig. 2(a)), when inserted between the rolls 1.2, it has a curved cross-sectional shape as shown in Fig. 2(b). The gold ingot chip 31 is pressed flat as if it were in contact with the heating ring 2. Therefore, the metal tape 31 is heated by the thermal influence of the heating oil, and the adhesive between the metal tape 61 and the plastic sheath 62 becomes molten or semi-molten, and the gold bullion tape 31
The plastic sheath 32 becomes easy to separate, and the metal chip ``j31'' is plastically deformed.On the other hand, the plastic sheath 62 is only in contact with the 0-ru 1 at room temperature and is hardly affected by heat. Although it is pressed by the O-ru 1, there is a stress that causes it to return to its original curved cross-sectional shape. As shown in FIG. 2(c), the metal chip 531 is sent out in a deformed state, and the plastic sheath "62 returns to its original curved cross-sectional shape due to the above-mentioned stress. The plastic sheath piece 5 is separated from the metal tape 51 by the above-mentioned return stress of the plastic sheath 62.

As described above, the present invention utilizes the three cylindrical sheath pieces each having a seven-sided curved cross-section, and can be inserted between the rolls 1 and 2 in the above-described manner, making it extremely easy to connect the gold ingot chip 61 to the plastic. The sheath 62 can be completely separated.

Further, since there is no need for a complicated kite roll, winder, etc. as a means for peeling off the gold bullion tape and the plastic sheath, there is also the advantage that the device can be extremely simple.

Note that when carrying out the method of the present invention, the present invention is not limited to the above-mentioned embodiments; for example, in order to create a temperature difference between rolls 1 and 2, roll 1 may be cooled to below room temperature. Alternatively, the 0-ru 1 may be heated to a predetermined temperature, and the 0-ru 2 may be heated to a temperature higher than the predetermined temperature of the 0-ru 1.

Also, 0-rules 1 and 2 are related to only one pair, upper B
Two or more pairs of rolls 1 and 2 such as vinyl may be provided. Furthermore, it is also possible to change the rotational speed of the wheels 1 and 2 as appropriate.

[Brief explanation of the drawing]

1 and 2 are diagrams for explaining the method of separating laninate sheath strips of the present invention, and 1 and 2 are a pair of 0-
6. 3-line sheath strip, 51 is metal tape, 32
indicates a plastic sheath. Patent applicant: Dainichi Nippon Electric Cable Co., Ltd. (& Director: Yukio Aoyama)

Claims (1)

[Claims] A trinate sheath strip, which has a curved cross-sectional shape and is made by bonding a metal chip and a plastic sheath, is placed between rotating rolls of at least 1x1 each having a different roll temperature. The faces are the above pair of O-
By inserting the sheet so that it faces the roll surface with the higher temperature, and pressing the 3-pin sheath strip with at least one pair of O-rules on the upper 6 pins, the 3-pin sheath strip is made into a single metal chip. A method for separating a 3-layer sheath strip, which is characterized by separating a plastic sheath from a VC.