JPH0845369A - Winding method and fusing method for stainless steel laminated tape - Google Patents

Abstract

PURPOSE:To provide a stainless steel laminated tape wiring method which does not cause deterioration of flexibility and a fusing method whereby the lapping part of the tape becomes hard to be peeled. CONSTITUTION:When a stainless steel laminated tape is fed diagonally to the running line of a cable core and wound helically onto the cable core, the stainless steel laminated tape is corrugated by the corrugator so that the tape is diagonal to the feeding direction, and the corrugated stainless steel laminated tape is wound onto the cable core while the corrugation of the stainless steel laminated tape is perpendicular to the direction of the axis of the cable core. Primary molding using a guide roller, secondary molding using a sizing dice, and tertiary molding using a holding roller are performed in sequence, and the tape is thereafter heated from its periphery by a jet heater, and with the lapping part of the tape kept elastically pressed by the holding roller, the tape is cooled to achieve predetermined fusion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of winding and fusing a stainless laminate tape, and more particularly to a method of winding and fusing a stainless laminate tape in a water-impervious cable.

[0002]

2. Description of the Related Art A conventional method for wrapping and fusing a stainless laminate tape in a water-impervious cable is to form a stainless laminate tape on a twisted cable core along a vertical direction when a sheath is extruded, The lap portion on the straight line of the tape was fused.

[0003]

In the conventional method of winding and fusing the stainless laminated tape as described above, the fused portion of the tape is easily peeled off when the sheath is pressed at a distance of about 1 m and twisted. Then, there was a problem that the outer sheath (polyethylene) was cracked. On the other hand, it is possible to consider a spiral winding method for the above-mentioned vertical alignment method, but it is effective for relatively flexible tape such as copper, aluminum or lead tape laminate. However, in the case of the stainless laminated tape as described above, it is difficult to perform the tightly wound winding with a relatively high rigidity as it is, and there is a problem in forming a water blocking layer that surely functions.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a method for winding a stainless laminated tape which does not reduce flexibility and a fusion method for making it difficult for the lap portion of the tape to peel off. It is in.

[0005]

According to the present invention, there is provided a method for winding a stainless laminate tape, wherein the stainless laminate tape is obliquely supplied to a running line of a cable core and is wound spirally on the cable core. The stainless laminated tape is applied with a corrugator to form a wave that is oblique to the supply direction,
The corrugated stainless laminate tape is wound around the cable core, and at that time, the corrugated wave of the stainless laminate tape is perpendicular to the axial direction of the cable core.

Further, the method for fusing a stainless laminate tape provided by the present invention is such that, when the stainless laminate tape is spirally wound and fused on the cable core, a primary molding by a guide roller, a secondary molding by a sizing die, and a pressing are performed. A characteristic feature is that predetermined fusion bonding is performed by sequentially performing tertiary molding with a roller, then heating from around the tape with a jet heater, and subsequently cooling while pressing elastically a lap portion of the tape with a pressing roller.

The preferred embodiments of the above fusion bonding method are as follows. First, the jet heaters may be arranged at equal intervals of 45 ° in the circumferential direction. Also,
It is advisable to use the sizing die as a forming roller, and to form by a roller, including primary forming and tertiary forming before and after the forming roller. Further, the pressing roller for tertiary molding and the pressing roller for the fusion-bonding portion of the tape wrap portion may be a pair of rollers biased by the spring so as to face each other.

[0008]

FIG. 1 shows a preferred embodiment of a method for winding and fusing a stainless laminate tape according to the present invention. 2 is a sectional view taken along line AA of FIG. 1, FIG.
2 is a sectional view taken along line BB of FIG.

In this embodiment, a stainless laminate tape 3 is obliquely supplied to the running line of the cable core 2 of the winding rotary type twisting machine 1, and this tape is fed to the cable core 2.
It is arranged to be wound in a spiral shape on the top. Then, the corrugator 4 is arranged on the supply line of the stainless laminate tape 3. The corrugator 4 has a corrugated groove, and the corrugated groove is perpendicular to the running line of the cable core 2. Then, when the stainless laminated tape 2 passes through the corrugator 4, the stainless laminated tape 3 is provided with a wave oblique to the supply direction. The corrugated stainless laminate tape 3 ′ is spirally wound around the cable core 2. The stainless laminated tape 3 ″ wound in this way is
It is wrapped so as to wrap between the front and rear winding parts. At this time, the wave of the stainless laminated tape 3 ″ is made to be at right angles to the axial direction of the cable core 2. Then, the original flexibility of the cable can be obtained even though the stainless laminated tape is wound around the cable core. Be done.

The stainless laminated tape 3 "wound as described above is subjected to primary molding from the circumference by the guide roller 5 at the winding start portion, and then,
Secondary molding is performed with a round sizing die 6 composed of rollers to have a predetermined outer diameter, and then tertiary molding is performed by the pressing roller 7 so that the lap portion of the tape is in close contact, and then the outer circumference is jetted by the heater 8. After that, the tape is cooled by the cold air nozzle 10 while elastically pressing the lap portion of the tape by the pressing roller 9 to achieve a predetermined fusion at the lap portion. As a result, the fusion bonding at the lap portion is perfect and the intended purpose of making it difficult to peel off is sufficiently achieved.

Here, the pressing roller 7 for tertiary molding and the pressing roller 9 after heating are urged by a spring 72 so that a pair of upper and lower rollers 71, 71 face each other as shown in FIG. The stainless laminate tape wound around the core can be pressed uniformly and stably over the entire circumference.

Further, the jet heaters 8 are preferably arranged at equal intervals of 45 ° in the circumferential direction as shown in FIG. In that case, the number of jet heater main bodies 81 is eight, and if hot air is blown from each jet heater main body 81 toward the traveling axis of the cable core, uniform heating can be performed on the entire circumference.

Although the above-mentioned fusion bonding method was applied to the wound portion of the corrugated stainless laminate tape, the stainless tape can be made sufficiently thin and the flexibility as a tape can be improved to some extent. If so, it is considered possible to manufacture a cable having sufficient water-sealing effect and water-blocking effect even when applied to the wound portion of the stainless laminated tape which is not corrugated.

[0014]

According to the method of winding and fusing the stainless laminated tape of the present invention as described above, the original flexibility of the cable and the fusing at the tape wrap portion are ensured. As a result, the life of the twist test is improved, the sheath (polyethylene) applied to the outside is not broken, and a water-proof cable of stable quality can be provided.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a stainless laminate winding method and a fusion bonding method according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

3 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Winding rotary type twisting machine 2 Cable core 3 Stainless steel laminating tape 3'Stainless steel laminating tape 3'Wound stainless laminating tape 4 Corrugator 5 Guide roller (for primary molding) 6 Sizing die (roller) 7 Presser Roller (for tertiary molding) 8 Jet heater 9 Holding roller 10 Cold air nozzle

Claims (5)

[Claims] 1. When a stainless laminated tape is obliquely supplied to a running line of a cable core and is wound around the cable core in a spiral shape, a corrugator causes the stainless laminated tape to form a wave oblique to the supply direction. A stainless laminated tape characterized in that the corrugated stainless laminated tape is wrapped around the cable core so that the corrugated wave of the stainless laminated tape becomes perpendicular to the axial direction of the cable core. Winding method. 2. When spirally winding and fusing a stainless laminated tape around a cable core, primary molding with a guide roller, secondary molding with a sizing die, and tertiary molding with a pressing roller are sequentially performed, and then the tape is jetted with a jet heater. A method for fusing a stainless laminated tape, characterized in that predetermined fusing is performed by heating from the surroundings and then cooling while elastically pressing the lap portion of the tape with a pressing roller. 3. The method for fusing a stainless tape laminate tape according to claim 2, wherein the jet heaters are arranged at equal intervals of 45 ° in the circumferential direction. 4. The method for fusing a stainless laminate tape according to claim 2, wherein the sizing die is a forming roller, and all of the forming including the primary forming and the tertiary forming before and after the forming is performed by the roller. 5. The stainless laminated tape according to claim 2, wherein the pressing roller for the tertiary molding and the pressing roller for the fusion portion of the tape wrap portion are a pair of rollers biased by a spring so as to face each other. Fusing method.