JPH06287847A - Braid, its production and apparatus for producing the same - Google Patents

Abstract

PURPOSE:To produce a braid of a special cross-sectional shape having thickness and texture such as an English letter or a Roman numeral type and ensure the rigidity or strength of a fiber-reinforced plastic structure. CONSTITUTION:This apparatus for producing a braid is equipped with plural annular tracks (R19), (R20), (R25) to (R27), related to the formation of double braid structural walls and annular tracks (R21) to (R27), related to the formation of crossover yarn between the braid structural walls and combined into a special arrangement such as an English letter type and has nearly uniformized sizes of the respective annular tracks (R19) to (R27). Furthermore, the braid having the crossover yarn between the double structural walls is produced by using this apparatus and this method for producing the braid is to circulate bobbin.carriers in the annular tracks of this apparatus and form the braid having the crossover yarn between the double structural walls.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braid having a special cross-sectional shape such as an English letter type or a Roman numeral type which is used as a core material of fiber reinforced plastic, a method for producing the same and an apparatus for producing the same.

[0002]

2. Description of the Related Art The applicant of the present invention has previously proposed that, as shown in FIG.
A braid braiding apparatus having an H-shaped or I-shaped cross section is proposed (Japanese Patent Application No. 2-49371). It has a trajectory composed of a linear traverse trajectory Ra, circular trajectories Rb and Rc which are partially open on both sides thereof, and a bobbin carrier escape trajectory Rd which is continuous with the traverse trajectory Ra. is there.

[0003]

The braid produced by the braid producing apparatus described above is merely one in which a single braid structure is connected, has no thickness, and is poor in texture. Therefore, the fiber-reinforced plastic structure produced thereby has insufficient rigidity and strength.

The present invention secures the rigidity and strength of a fiber reinforced plastic structure by providing a braid having a special cross-sectional shape such as an alphabetic type, a Roman numeral type and the like having a thickness and texture, a manufacturing method thereof and a manufacturing apparatus therefor. The purpose is to do.

[0005]

In order to achieve the above object, the present invention provides a plurality of annular raceways related to formation of a double braid structure wall and an annular raceway related to formation of crossover threads between the braid structure walls. Are combined in a specific arrangement such as a letter shape, and the sizes of the respective loop-shaped orbits are almost the same, a braid having a cross yarn between the double structure walls manufactured by this device, and a bobbin on the ring-shaped orbit of this device. -A braid manufacturing method is adopted in which a carrier is circulated to form a braid having a crossover yarn between double-structured walls.

[0006]

[Operation] In the braid, the manufacturing method thereof, and the manufacturing apparatus thereof configured as described above, the bobbin / carrier groups are cross-traveled along the respective annular orbits that are combined in a specific arrangement such as an alphabetic character, so that the orbits are separated. A braid having an H-shaped or I-shaped cross-section in which a crossover yarn is formed between walls of double composition structure is manufactured without making a difference in composition state.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A braid having an H-shaped or I-shaped cross section, a method of manufacturing the same and a manufacturing apparatus thereof will be described with reference to FIGS.

The braid producing device described below is basically the same as the ordinary flat braiding machine and round braiding machine,
Composition is achieved by a plurality of sets of bobbin carriers traveling counterclockwise or clockwise along a track formed on the disk. The fiber bundle fed from each bobbin mounted on each bobbin carrier is guided to the voice located above the center of the track to form a braid. Bobbin
The carrier is fed by a drive gear located at the bottom of the disc.

The braid manufacturing apparatus described first is a bobbin
The carrier transfer drive gear G is arranged as shown in FIG. The braid manufacturing apparatus, as shown in FIG. 2, has four orbital R ₁ to R _4, the track R ₁ of which is to increase around the whole. Then, the braid having the cross-sectional shape in which the three wheels are connected as shown in FIG. 7 is manufactured by the cross traveling of the bobbin carrier groups circulating in the respective orbits R _{1 to} R ₄ . At that time, each orbit R
_The number of rotations of the drive gear belonging to the orbit while the bobbin carrier groups belonging to _{1 to} R ₄ make one orbit around the orbit is as follows. That is, 29 revolutions on the orbit R ₁ ,
The orbits R ₁ and R ₄ have 11 revolutions, and the orbit R ₃ has 7 revolutions.

According to this braid producing apparatus, automatic composition is possible, but the cross-sectional shape of the braid produced is not always the intended purpose (it can be said that it is I-shaped depending on the appearance). ). However, it goes without saying that it can be used as a core material for a fiber-reinforced plastic structure.

In the braid manufacturing apparatus described below, the bobbin / carrier transfer drive gears G and G'are arranged as shown in FIG. 3 (the circles in the respective drive gears G and G'are bobbins). -The position of the carrier). This drive gear G '
Is added to form a thread that is passed between the walls of the composition structure forming the braid. This braid manufacturing device
As shown in FIG. 4, there are 14 orbits R _{5 to} R ₁₈ , of which the orbit R ₅ makes a large turn around the whole, and the orbits R _{6 to} R ₁₈ are for forming the crossover yarn. It is a related orbit. Then, as the bobbin / carrier groups circulate in the respective orbits R _{5 to} R ₁₈ , the braids having the cross-sectional shape having the cross yarn Y between the composition structure walls as shown in FIG. 8 are manufactured. At this time, the number of rotations of the drive gear belonging to the orbit while the bobbin carrier group belonging to each of the orbits R _{5 to} R ₁₈ makes one turn around the orbit is as follows. That is, the orbit R ₅ has 29 revolutions, and the orbits R _{6 to} R ₁₈ have 3 revolutions.

In this braid manufacturing apparatus, when the drive gear belonging to the orbit R ₅ makes 29 revolutions and the drive gear belonging to the orbits R _{6 to} R ₁₈ makes 3 revolutions, the bobbin carrier group belonging to the orbit makes one revolution. Therefore, in other words, the trajectory R ₆
Since the orbit R ₁₈ is too small, it is partially composed earlier by the bobbin carriers circling the orbit R ₆ or R ₁₈ than by the bobbin carriers circling the orbit R ₅ . Therefore, in order to automatically compose, the fiber bundle extending from the bobbin carrier group circulating in the orbit R ₅ to the composition point is vibrated, or repulsion is performed (the comb-shaped reed is used to intermittently direct the fiber bundle toward the composition point). It is necessary to encourage the movement to the composition point. Moreover, the cross-sectional shape of the braid produced is
It is as intended.

The braid manufacturing apparatus described last is a bobbin
The carrier transfer drive gears G and G'are arranged as shown in FIG. 3 (the circles in the drive gears G and G'are the positions of the bobbin carriers). This drive gear G'is also added to form a yarn passing between the composition structure walls of the braid. This braid manufacturing device is shown in FIG.
As shown in FIG. 9, it has nine raceways R _{19 to} R ₂₇ , and among them, the raceways R _{21 to} R ₂₇ form a crossover yarn. Then, as the bobbin-carrier group circulates along each of the tracks R _{19 to} R ₂₇ , the braid having the cross-sectional shape having the crossover yarn Y between the outer walls as shown in FIG. 9 is manufactured. At this time, the number of rotations of the drive gears belonging to the orbits while the bobbin carrier groups belonging to the orbits R _{19 to} R ₂₇ make one turn around the orbit is as follows. That is, the orbits R ₁₉ and R ₂₀ have 11 revolutions, the orbits R _{21 to} R ₂₄ have 5 revolutions, the orbits R ₂₅ and R ₂₆ have 7 revolutions, and the orbit R ₂₇ has 7 revolutions.

According to the braid manufacturing apparatus, each orbit R ₁₉ ~
Since there is no great difference in the size of R ₂₇ , there is no great difference in the composition state at the composition point, and automatic composition is possible without vibrating the fiber bundle or beating. In addition, the cross-sectional shape of the braid produced is also as intended due to the presence of the crossover yarn Y, as in the previous example.

The braid produced by these braid producing devices can be very strong when used as a core material for fiber reinforced plastics using glass fiber, carbon fiber or aramid fiber. At the same time, it is possible to obtain a product with excellent texture. Therefore, it can be used as a structural member that replaces the conventional iron member. Needless to say, of course, the reinforced plastic has higher strength because it is easier to mold than the one obtained by simply joining flat braids or round braids.

In order to give the braid a further texture, the filler is supplied from the position ● in the drive gear arrangement diagrams (FIGS. 1, 3 and 5) of each of the above examples to form the composition structure. The core material can be filled between the walls. As the filler, a fiber bundle, a foam such as urethane foam, a synthetic resin or the like can be appropriately selected according to the purpose of use such as reinforcement, heat insulation, electrical conduction, and electrical insulation.

[0017]

Since the present invention is configured as described above, it has the following effects.

That is, vibration is applied to the fiber bundle in the composition,
It is possible to manufacture braids with special cross-sectional shapes such as English letters and Roman numerals that have thickness and texture without beating, and the rigidity and strength of the fiber reinforced plastic structure can be secured. . In addition, if the filler is supplied between the braid structure walls, a braid with a better texture can be obtained, and the fiber-reinforced plastic can be easily molded.

[Brief description of drawings]

FIG. 1 is a drive gear layout of a braid manufacturing device.

FIG. 2 is a schematic view of a track in the braid manufacturing device having the drive gear arrangement shown in FIG.

FIG. 3 is a drive gear arrangement diagram of an H-shaped or I-shaped cross-section braid manufacturing apparatus having a drive gear for passing yarn.

FIG. 4 is a schematic diagram of a track in the braid manufacturing apparatus with the drive gear arrangement shown in FIG.

FIG. 5 is a drive gear layout diagram of another braid manufacturing device having an H-shaped or I-shaped cross section having a drive gear for passing yarn.

FIG. 6 is a schematic view of a track in the braid manufacturing apparatus having the drive gear arrangement shown in FIG.

FIG. 7 is a cross-sectional view of a braid according to the braid manufacturing apparatus having the drive gear arrangement shown in FIG.

8 is a cross-sectional view of a braid according to the braid manufacturing apparatus having the drive gear arrangement shown in FIG.

9 is a cross-sectional view of a braid produced by the braid manufacturing device having the drive gear arrangement shown in FIG.

FIG. 10 is a track diagram of a conventional braid manufacturing apparatus having an H-shaped or I-shaped cross section.

[Explanation of symbols]

G Drive gear G'Drive gear added to form the crossover R Track (Different numbers are shown below.) Y Crossover

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[Procedure amendment]

[Submission date] May 20, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Claims]

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yasushi Hamada 1706 Kido, Shiga-cho, Shiga-gun, Shiga Prefecture (72) Inventor Akihiro Fujita 361 Iwakura Hanazono, Sakyo-ku, Kyoto Prefecture Room 103, Marposa (72) Inventor Tadashi Uozumi 29 Okazaki Kitagoshocho, Sakyo Ward, Kyoto City, Kyoto Prefecture

Claims (3)

[Claims] 1. A plurality of annular orbits related to the formation of double braid structure walls and annular orbits related to the formation of crossover yarns between the braid structure walls are combined in a specific arrangement such as an alphabetic character, and the size of each annular orbit is increased. Braid manufacturing equipment that has almost the same size. 2. A braid having a connecting thread between the double-structured walls manufactured by the braid manufacturing apparatus according to claim 1. 3. A method for producing a braid in which a bobbin carrier is circulated in an annular orbit in the braid producing apparatus according to claim 1 to form a braid having a crossover thread between walls of a double structure.