JP2967403B2 - Decorative cord made of synthetic resin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a decorative string made of synthetic resin.

[0002]

2. Description of the Related Art A wire made by extruding a transparent synthetic resin has a lens effect of refracting light passing through the wire. When a synthetic resin having a high degree of transparency is used, a crystal tone is exhibited.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and has a new design feeling by twisting strands formed by extruding a transparent synthetic resin into a string. It is an object of the present invention to provide a synthetic resin decorative cord.

[0004]

According to the present invention, there is provided a synthetic resin decorative cord for attaining the above object, wherein a core wire is pulled out from a center hole of a die at the tip of an extruder in a tensioned manner, and a wire around the center hole is pulled out. Extruding a transparent synthetic resin in a molten state from a plurality of extruded holes formed to form a wire, and twisting each of the wires around the core wire to be welded integrally;
The shape of the outer peripheral surface when solidified by cooling is a shape in which each of the strands is twisted.

[0005]

In the above-described synthetic resin decorative cord, the shape of the outer peripheral surface when the individual wires are twisted around the core wire, integrally welded, and solidified by cooling, is such that the individual wires are twisted. It is in the shape of the folded state. Therefore, since the lens effect of each spiral wire is intricately exhibited, the straight core wire may appear oblique and discontinuous. And, by using a colorful core wire, it is possible to provide a decorative string which can be visually recognized as a color pattern and has an aesthetic feeling and a high design property. Further, by using a core wire having high tensile strength, there is an effect that a durable and highly practical decorative cord can be provided.

[0006]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic perspective view of a manufacturing apparatus 11 for a synthetic resin decorative cord (hereinafter simply referred to as a decorative cord) 1 according to the present invention, FIG. 2 is an enlarged front view of the decorative cord 1, and FIG. . The manufacturing device 11 includes an extruder 12 and a twisting device 21. At the tip of the extruder 12,
Die 13 is fixed. The die 13 has a center hole 14.
And four circular extrusion holes 15 are formed around the center hole 14. From the center hole 14, a polyester-based thread or silk thread serving as the core wire 16 is drawn out. Further, from the extrusion hole 15, a colorless and transparent vinyl chloride in a heated and melted state is extruded under a back pressure, and a wire 17 having a circular cross section is formed.

The twisting device 21 comprises a pair of drive rollers 22 driven by a belt, and a twist ring 24 rotatably driven by being supported at three points by the drive rollers 22, 22 and a holding roller 23. . The twisted ring 24 has a radial axis 2
A pulley 26 is rotatably supported by the pulley 5. The tip of the core wire 16 pulled out from the center hole 14 of the die 13 of the extruder 12 and the tip of the four strands 17 extruded from the extrusion hole 15 are combined into a single twisted ring. One turn is carried around the 24 pulleys 26 and connected to a winding device (not shown). When the winding device is driven and pulled and the twisted ring 24 is driven to rotate, the four strands 17 are twisted around the center core 16 to be twisted to form a string. Since the strands 17 are immediately after being extruded from the die 13, they are integrally welded by twisting. By being cooled until it is wound around the pulley 26 once, it is solidified to form a string.

[0008] The decorative cord 1 manufactured by the above method
Has an outer peripheral surface of four strands 1 as shown in FIGS.
The so-called curved mountain 17a in a state where 7 is twisted
Are spirally continuous, and the wire 17 is welded to the inside to form an integral shape. The strand 17 is made of colorless and transparent vinyl chloride. For this reason, the lens effect by the curved peak 17a of the four strands 17 appears in a spiral shape. Due to this lens effect, the central core wire 16 becomes oblique and looks discontinuous. When a colorful core wire is used, it can be visually recognized as a color pattern due to its lens effect. The decorative cord 1 has a crystal appearance as seen in a transparent vinyl chloride product, so that the decorative cord 1 is beautiful and has high design. Also,
By using the core wire 16 having a high tensile strength, it can be used not only as a durable and practical decorative cord 1 but also as a surrounding rope. In the above case, colorless and transparent vinyl chloride is used, but colored and transparent vinyl chloride may be used.

FIGS. 4 and 5 show another apparatus for manufacturing the decorative cord 1. FIG. The manufacturing apparatus 41 shown in FIG. 4 is composed of endless belt devices 42 and 43. The endless belts 42a and 43a facing each other intersect at a predetermined angle,
Of the core wire 16 pulled out from the center hole 14 of the die 13 and the four strands 1 pushed out from the extrusion hole 15.
7 are clamped together. And the endless belt 4
By running the wires 2a and 43a, four wires 17 extruded from the extrusion hole 15 of the die 13 are twisted around the core wire 16 which is pulled in a tension state. The endless belt devices 42 and 43 include a support table 44,
45 are rotatably supported, respectively, so that the twist angle can be arbitrarily changed.

FIG. 5 shows a hand-held power tool 51 for twisting. Locking tool 53 fixed to spindle 52 at the tip of hand-held power tool 51
Then, the tips of the core wires 16 pulled out of the center hole 14 of the die 13 of the extruder 12 and the tips of the four strands 17 pushed out of the extrusion holes 15 are locked together. Then, by rotating the spindle 52 and pulling the hand-held power tool 51 toward the user, the four strands 17 are twisted around the center core 16 which is pulled in a tension state. By changing the speed at which the hand-held power tool 51 is pulled forward, the twist can be adjusted.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an apparatus 11 for manufacturing a decorative cord 1. FIG.

FIG. 2 is an enlarged front view of the decorative cord 1. FIG.

FIG. 3 is an enlarged sectional view of the same.

FIG. 4 is a schematic perspective view of an apparatus 41 for manufacturing the decorative cord 1.

FIG. 5 is a perspective view showing a mode in which the decorative cord 1 is manufactured by the hand-held electric tool 51.

[Explanation of symbols]

 1 ... Decorative cord 16 ... Core wire 17 ... Strand 17a ... Curved mountain

Claims (1)

(57) [Claims] 1. A core wire is pulled out from a center hole of a die at the tip of an extruder in a tension state, and a transparent synthetic resin in a molten state is extruded from a plurality of extrusion holes formed around the center hole to form a wire. Forming, twisting each of the strands around the core wire, welding them integrally, and setting the shape of the outer peripheral surface when solidified by cooling to a shape in which the strands are twisted. Characteristic synthetic resin decorative cord.