JP2009215688A - Coated metal rope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coated metal rope allowing car drivers to confirm the presence of a guard cable or the like at night, capable of improving visibility at night so as to provide easy confirmation of the presence of the rope by naked eyes at night, while improving corrosion resistance and also the life of the rope. <P>SOLUTION: In a metal rope prepared by twisting two or more yarns each having a whole peripheral surface coated with a resin, one or more yarns out of the resin coated yarns are coated with a resin mixed with a fluorescent pigment or a light storage pigment, or one or more strands out of the resin coated strands are coated with the resin mixed with the fluorescent pigment or the light storage pigment. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rope having improved night visibility suitable for use as a metal rope, particularly a rope for road safety facilities.

Visibility of guard cables for road separation is reduced at night and there is a high risk of a car collision. In order to give corrosion resistance to the guard cable, surface treatment such as galvanization or zinc / aluminum plating is performed on the surface of the steel wire, but it is not subjected to treatment that is easy to check at night from the driver of the car. Further, in order to improve the corrosion resistance and weather resistance on the surface of the stranded wire, it is disclosed in the prior art that the surface of the steel stranded wire is coated with a thermoplastic resin such as saturated polyester by powder coating, No effective means has been disclosed for improving nighttime visibility and suppressing nighttime collisions.
JP 2006-122808 A JP 2006-167762 A

  The present invention has been made to solve the above-mentioned problems, and the purpose of the present invention is to make it easy to check the presence of a guard cable or the like at night from the viewpoint of the driver of the car, and to make the rope easy even at night. An object of the present invention is to provide a coated metal rope that can improve visibility at night, improve corrosion resistance, and improve the life of the rope.

  In order to achieve the above object, the present invention, as a coating means, absorbs light such as sunlight and incandescent lamps and temporarily stores it, and gradually releases it to store luminous pigments that appear to emit light in dark places such as at night. A fluorescent pigment that is excited by energy such as light and emits the energy as light of a specific wavelength is used.

Specifically, a metal rope is coated with a resin, and a part or all of it is coated with a resin containing a fluorescent pigment or a phosphorescent raw material. A plurality of strands of resin coated are twisted around the entire surface. In the rope, one or more of the strands are mixed with a strand coated with a resin blended with a fluorescent pigment or a phosphorescent pigment. That is, in a metal rope formed by twisting a plurality of strands coated with resin on the entire circumference of each surface, one or more of the coated strands are coated with a resin containing a fluorescent pigment or a phosphorescent pigment. It is characterized by being. (Claim 1)
In this invention, it includes a mode in which a resin containing a fluorescent pigment is applied to one or more strands, a resin containing a phosphorescent pigment is applied to one or more other strands, and the strands are twisted together. It is out.

In the present invention, a strand formed by twisting a plurality of strands is coated with resin, and a metal rope formed by twisting a plurality of strands is combined with a fluorescent pigment or a phosphorescent pigment in one or more strands. Strands that have been subjected to resin coating are mixed. That is, after resin coating is applied to the entire surface of the strand formed by twisting a plurality of strands, one or more of the resin-coated strands are fluorescent pigments or phosphorescents. It is characterized by being coated with a resin blended with a pigment (claim 3).

This invention includes a mode in which a resin containing a fluorescent pigment is applied to one or more strands, a resin containing a phosphorescent pigment is applied to one or more strands, and these are twisted. Furthermore, the above-mentioned strand or strand is coated with a resin coating containing a fluorescent pigment or a resin coating containing a phosphorescent pigment, and both are made into a coated rope.

In order to include a fluorescent part or a phosphorescent part by applying a resin coating containing a fluorescent pigment to part or all of the rope, or by applying a resin coating containing a phosphorescent pigment, or a resin coating and a phosphorescent pigment compounded with a fluorescent pigment By applying the resin coating, both the fluorescent part and the phosphorescent part are included, so that the visibility at night can be remarkably improved. Since the rope is resin-coated, the corrosion resistance can be improved at the same time.

Among these, in particular, in the case where both the fluorescent part and the phosphorescent part are included in the same rope, the fluorescent part shines with a car light at night, and the phosphorescent part shines in a dark place where the light does not hit.
In other words, in either case where the light of the night car hits or not, either the fluorescent part or the phosphorescent part shines, so that the visibility can be reliably improved.

In addition, you may apply this invention to metal fittings in addition to a rope. For example, in a rope clasp made of a plurality of parts, a part of the parts may be coated with a fluorescent resin, and the other part may be subjected to phosphorescent coating.
In some cases, only a part of the strands of the metal rope or a part of the strands may be coated with fluorescence or phosphorescence, or both, and other strands or strands may not be coated.

  An appropriate amount of fluorescent pigment or phosphorescent pigment is blended into the powder resin, and this powder coating is baked and applied to the strands or strands of the rope. Preferably, a white resin is baked and coated on the base, and then a resin paint containing a fluorescent pigment or a phosphorescent pigment is baked on the base, but it may be applied directly without the base coating. In particular, fluorescent pigments are preferably covered with a colorless resin coating containing a UV absorber on these coatings in order to suppress the UV degradation.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a strand type wire rope having a 3 × 7 structure, and powder baking coating was performed by a continuous process of the following procedure. Saturated polyester resin in which the surface of steel wires 1a, 2a, 3a subjected to galvanization with a diameter of 2.86 mm is subjected to shot blasting as pretreatment and then blended with a fluorescent pigment or phosphorescent pigment using a high-frequency heating device The wire is heated to a temperature equal to or higher than the melting point of the powder coating material, and then passed through a fluidized tank of saturated polyester resin powder to adhere the powder to the surface and melt it. After passing through a die hole having a diameter and being pressure-bonded, it was solidified by water cooling and painted. The coating thickness was about 80 μm.
7 fluorescent coated strands coated in this way are twisted into strands 1, 2, and 3, and 3 strands 1, 2, and 3 are twisted together to produce a wire rope 4 of 3 × 7 structure with a diameter of 18 mm. did.

  The outline of this painting process is as shown in FIG. 4, that is, the steel wire is drawn from the supply device 5, the surface of the wire is cleaned, matte and activated by the shot blasting device 6, and then the high-frequency heating device 7 is heated, and this is immersed in a powder coating fluid tank 8 containing a fluorescent pigment or a phosphorescent pigment so that the coating material adheres and melts to the strands, and then passes through a die having a predetermined hole diameter to press the coating material. After that, the water is cooled and solidified through the water tank 10 and wound up by the winding device 11.

Shot blasting is applied to the surface of a steel wire that has been galvanized on a surface with a diameter of 2.86 mm, and then a white saturated polyester resin powder coating is sprayed onto the surface of the wire using an electrostatic coating device. After that, the wire is heated to a temperature equal to or higher than the melting temperature of the powder using a high-frequency heating device to melt the adhered powder, and then the resin powder coating containing the fluorescent pigment or phosphorescent pigment is statically deposited thereon. It was attached using an electrocoating device, melted and baked with residual heat, then solidified with water and painted. The undercoat film thickness was about 90 μm, and the fluorescent or phosphorescent film thickness was about 50 μm.

The outline of the painting process of this embodiment is shown in FIG. 5, that is, the steel wire is drawn from the supply device 5, and first the surface is cleaned, textured and activated by the shot blasting device 6. After the white resin powder is electrodeposited and adhered by the first electrostatic coating apparatus 7A, the adhesion resin is melted by heating to a predetermined temperature by the high-frequency heating apparatus 8, and then the second electrostatic coating apparatus is in this molten state. In 7B, a powder resin blended with a fluorescent pigment or a phosphorescent pigment is sprayed and adhered, melted, and then cooled and solidified in a water tank 10 and wound up by a winder 11.
The seven coated strands thus obtained were twisted to form a strand, and the three strands were further twisted to form a 3 × 7 rope having a diameter of 18 mm.

Combinations of fluorescent pigment blend coating and phosphorescent pigment blend coating are as follows.
1) Of the seven strands constituting the strand, three strands 4a are fluorescent coating wires or phosphorescent coating wires, and the other three strands 4b other than the core wires include fluorescent coating or phosphorescent coating wires. There was no ordinary resin coating wire, and this was twisted to make a 3 × 7 rope. (See Figure 2)
2) Of the three strands, one strand 1 is composed of a fluorescent coating wire, the other two strands 2 and 3 are composed of a phosphorescent coating wire, and these are twisted to form a 3 × 7 rope. . (See Figure 3)
3) Of the seven strands constituting the strand, three strands 4a are fluorescent coating wires, and the other three strands 4b other than the core wires are phosphorescent coating wires. A rope having a x7 structure was used.

  Powder baking coating was performed by a continuous process according to the following procedure. That is, the surface of a strand having a diameter of 9 mm formed by twisting seven galvanized steel strands having a diameter of 2.86 mm is subjected to surface treatment by shot blasting, and then a saturated polyester resin containing a basic white pigment. The powder coating is electrodeposited on the strand surface with an electrostatic coating device, then heated to a temperature higher than the melting point of the coating with a high-frequency heating device and melted to form an undercoat. A saturated polyester powder resin paint blended with a pigment or phosphorescent pigment was sprayed onto the strand surface using another electrostatic coating apparatus and melted with residual heat, and then solidified with water and solidified for coating. In this coating, the base coating thickness was about 100 μm, and the fluorescent or phosphorescent coating thickness was about 60 μm.

The outline of the painting process is shown in FIG. 6 and is almost the same as FIG. 5 of the second embodiment. The difference is that a high-frequency heating device 8a for preheating is provided in front of the shot blasting device. This is for heating at a temperature lower than the melting temperature of the powder resin in advance in order to suppress heating unevenness at the peak and valley of the strand when the main heating is performed by the high-frequency heating device 8. is there.
Three strands coated in this way were twisted together to form a rope having a 3 × 7 structure and a diameter of 18 mm.

In Examples 2 and 3, the base coating is not performed in the fluorescent pigment blend coating, and the powder coating in which the fluorescent pigment is blended directly into the powder resin may be performed. In this case, in order to further suppress UV degradation of the fluorescent pigment during coating, after the fluorescent coating is performed by the first electrostatic coating apparatus by the method of FIG. 5, the resin (transparent) is irradiated with ultraviolet rays by the second electrostatic coating apparatus. It is preferable to apply powder mixed with an absorbent.
Of course, after the base coating powder is heated, in the melted state, the powder coated with the fluorescent coating powder and the ultraviolet absorber may be sprayed and melted for coating (three-layer coating).

(A) is a side view of the metal rope applied to the coating of this invention, (b) is sectional drawing. It is a side view of the painting metal rope which shows the Example of this invention. It is a side view of the coating metal rope which shows the other Example of this invention. It is the schematic which shows an example of the coating process of this invention. It is the schematic which shows the other example of the coating process of this invention. It is the schematic which shows the further another example of the coating process of this invention.

Explanation of symbols

1-3 Strands constituting a rope 1a, 2a, 3a, 4a Wire 4 Rope body 7, 7A, 7B Electrostatic coating device 8 High-frequency heating device 9 Powder flow tank

Claims (4)

In a metal rope formed by twisting a plurality of strands coated with resin on the entire circumference of each surface, one or more of the coated strands are coated with a resin containing a fluorescent pigment or a phosphorescent pigment. Painted metal rope characterized by The resin according to claim 1, wherein a resin containing a fluorescent pigment is applied to one or more strands, a resin containing a phosphorescent pigment is applied to one or more strands, and the strands are twisted together. Painted metal rope as described. After resin coating is applied to the entire surface of the strand formed by twisting a plurality of strands, one or more of the resin-coated strands are fluorescent pigments or phosphorescent pigments. Painted metal rope characterized by being painted with compounded resin. 4. The coating according to claim 3, wherein a resin containing a fluorescent pigment is applied to one or more strands, a resin containing a phosphorescent pigment is applied to one or more strands, and these are twisted together. Metal rope.

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