JPS6328942A - Three-dimensional weaving method - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION The present invention relates to an improved weaving method for forming three-dimensional structures of fibers.

[Prior art]

Form a braided cord or a braided structure by extending it, that is, a three-dimensional structure! ! The weaving method has already been disclosed in US Pat. No. 4,312,261, and this weaving method is a torsion lace weaving method. This torsion lace method arranges a large number of bobbins in the same plane, and unwinds the threads wound around the bobbins while changing the positions of the bobbins to create a three-dimensional structure due to the intertwining of the threads. It is something.

The weaving apparatus according to this method is a method usually called 'MAGNA WEAVE', which is described in the above-mentioned US patent.This method involves placing a large number of carriers carrying bobbins in a fixed array within a limited plane. In this method, the carrier is moved by the pressing force of a rod driven by an electromagnetic solenoid provided on the outer periphery of the plane.

At this time, in order to eliminate contact resistance between the carriers, a gap between them is maintained by disposing permanent magnets around the carriers. Weaving equipment using this method aims to increase speed by using electromagnetic solenoids, but
Since the gap between the carriers depends on the magnetic force of the permanent magnets from the surrounding area, it is not possible to obtain a uniform gap between the carriers and the surrounding carriers, which makes positioning difficult after movement, and it is necessary to correct the position every time the carrier moves one step. The problem is that because it requires time, complete continuous operation cannot be expected, and industrially practical production speeds cannot be achieved. This tendency becomes particularly noticeable as the size of the bobbin increases.

The driving source for moving each bobbin carrier is the pressing force generated by the sliding of a rod provided on the outer periphery of the moving plane, in other words, the pressing force from one end of the arrayed bobbin rows.

Therefore, each bobbin carrier is simultaneously interlocked for each bobbin row. Therefore, this bobbin carrier driving method has the following problems.

(1) Since it is a concentrated drive in which each bobbin row is interlocked, when forming a large structure, the number of bobbins in the - row becomes large, so there is a limit to bobbin driving. That is, there is a limit to the size of the structure to be molded, and it is not suitable for molding large structures.

(2) The cross-sectional shape of the structure to be molded is determined by the shape of the carrier movement plane on which the bobbin carrier is arranged, so when changing the cross-sectional shape of the structure, the carrier movement plane and the drive device must be changed. I have to change the installation.

This means that known weaving methods and devices lack flexibility and scalability.

(3) Since the driving method for moving the carrier is an interlocking method using pressure from one end of the bobbin row, it may be difficult to install the driving device when molding a cross-sectional shape with a curve on the inside. In addition, there may be cases where there is a limit to the driving method, such as in the case of a small hollow shape.

In other words, there is no arbitrariness in the cross-sectional shape to be molded.

(4) In the conventional torsionless method,
Since the bobbin carrier has only one movement path, the weaving structure is a single structure. In other words, the problem is that it has no applicability to woven structures.

The driving method of the bobbin carrier in the conventional three-dimensional weaving method is an interlocking method in which each row of bobbin carriers is driven.

In other words, the drive source for the movement of each bobbin carrier is the pressing force from the endmost bobbin carrier in the same row, that is, it is a dependent drive in which each bobbin carrier moves only by the interlocking force of the bobbin row, and each bobbin carrier does not have its own self-moving force. This is why the various problems mentioned above occur.

[Purpose of the invention]

The present invention aims to solve the problems in the conventional torsionless weaving method, and aims to provide a method and an apparatus for improving all of the above problems.

[Summary of the invention]

To achieve the above object, the present invention provides a weaving method in which a three-dimensional structure of fibers is formed by vertically and horizontally moving a bobbin carrier carrying a bobbin wound with fibers, in which each of the bobbin carriers is independently driven. In a three-dimensional weaving method and a weaving apparatus in which a three-dimensional structure of fibers is formed by moving a carrier carrying a bobbin vertically and horizontally, each bobbin carrier is provided with a slider, and a stator facing the slider is provided in each bobbin carrier. This is a three-dimensional weaving device in which a motor is installed for each slider.

That is, the present invention is based on the fact that the driving method for moving the bobbin carrier is fundamentally different from that of the known technology.

In the prior art, the bobbin carrier itself did not have a driving force, but the present invention provides an independent driving force for each bobbin carrier. Therefore, the drive device is not disposed on the outer periphery of the bobbin carrier movement plane, unlike in the conventional case.

The apparatus for achieving the above-mentioned independent starting method is to provide a slider part of the linear motor at the bottom of the carrier in which the bobbin is built, and to oppose the slider or to arrange the stator part of the linear motor on the moving plane of the bobbin carrier. In this device, the bobbin carrier is moved by activating the slider by electromagnetic force from the stake.

At this time, the bobbin carriers each provided with a slider section at the bottom are arranged vertically and horizontally on the carrier moving surface on which the stator section is arranged, and the slider at the bottom of the bobbin carrier and the stator on the moving plane are each paired in pairs. 1 and facing each other.

Each of the stators is connected to an independent electric wire, and the energization (drive) of each stator is controlled by a computer.

In other words, the present invention provides a method for driving a slider of a near motor provided at the bottom of a carrier containing a bobbin by electromagnetic force from a stator installed on a carrier movement plane. This is a method of weaving a three-dimensional structure by independently driving the stakes in one-to-one correspondence with the sliders.

〔Example〕

Next, the present invention will be explained in detail according to the drawings.

FIG. 1 is a plan view of a three-dimensional weaving apparatus M in which bobbin carriers for weaving are arranged on a carrier movement plane, in which bobbin carriers 1 are arranged opposite to each bobbin carrier 1 on a movement plane 2 of the bobbin carriers. A stator 3 is provided. A linear motor is constituted by the bobbin carrier 1 and the stator 3, and the stator 3 includes segmented stators 3R, 33, 3T,
It consists of 3U. And divided stators 3R, 3T
and bobbin carrier 1, move carrier 1 in the left and right direction in the figure,
Furthermore, the segmented stators 3S and 3U and the bobbin carrier 1 form a linear motor that moves the carrier 1 in the vertical direction in the figure. Therefore, by controlling the selection of energization to the stator 3, the bobbin carriers 1 on the moving plane 2 can be individually moved in arbitrary directions.

A method for obtaining a fiber structure having an arbitrary cross section using the illustrated rectangular weaving apparatus M will be described.

(However, the row of the stator 3 array is A, the BSC...column is a,
b, c... ) First, a fiber structure having a rectangular cross section can be obtained by arranging bobbin carriers 1 in a rectangular shape as shown in FIG. 1 and driving the carriers 1 according to the torsion race method.

In this case, one of the hobbin carriers 1
The movement locus of rm is as shown by the dotted line in the figure.

Next, in order to obtain a fiber structure having an L-shaped cross section, for example, the bobbin carrier 1 is arranged in the arrangement shown in FIG.
3 Ebs~3 ths 3 ra~3 F9%3
This can be obtained by removing the bobbin carrier 1 corresponding to G3G3° and driving it according to the torsion race method.

In addition, the rectangular 7/6. In order to obtain a fiber structure having an L-shaped cross section similar to that described above using the apparatus, it is necessary to arrange the carrier 1 as shown in FIG. 3
゜, 3Eb~3, 3F,~3,9.3. 3G11.
It is also possible to use a method of moving Kisyariya 1 according to the torsion race method, excluding the bobbin carrier compatible with 3G9, but among the carriers excluding the bobbin,
For example, carrier 1 corresponding to position 3yi of stator 3
In this case, the locus of movement becomes as shown by the dotted line in FIG. 1, and the fiber structure is mixed into the L-shaped array, making it impossible to obtain an L-shaped fiber structure.

As described above, according to the present invention, a fiber structure having an arbitrary cross section can be obtained.

FIG. 3 is an elevational view of the first weaving device, in which a carrier moving plane 2 is installed on a pedestal 4, and yarns drawn out from within a large number of bobbin carriers 1 arranged on this carrier moving plane 2 are shown. The strips 5 are woven as these bobbin carriers 1 move.

The woven fiber structure 6 has a three-dimensional structure and is taken off by a take-off roller. Also.

A predetermined tension necessary for weaving is applied to each thread 5.

Further, the electric wiring 10 for driving the stator 3 is individually connected to a power supply driver 9, and the power supply driver 9 independently drives and controls each stator 3 by the controller 8.

Note that general linear motors such as a linear pulse motor, a linear DC motor, a linear induction motor, a linear synchronous motor, etc. can be applied to the linear motor fixed to the bobbin carrier and consisting of the slider 12 and the stator 3.

[Applications of three-dimensional structures, etc.]

The three-dimensional structure of fibers formed according to the present invention is FR
It can be used as a reinforcing fiber structure for composite materials such as P, FRM and C/C composites, as a functional material such as filters, heat insulating materials, soundproofing materials, and vibration absorbing materials, as well as for belts and clothing. be.

Types of fibers include inorganic fibers such as metal fibers, carbon fibers, and alumina fibers, various organic fibers, and hybrid fibers of inorganic fibers and organic fibers, and these are selected depending on the purpose.

FIG. 4 is a sectional view of a driving device for the bobbin carrier 3 to which a linear pulse motor is applied, as an example.

The bobbin carrier 1 has a cylindrical or frame shape, and is provided with casters 13 and a slider 12 at the lower part, and a shaft 15 supported by a set screw 14 at the middle part.
5 rotatably supports a bobbin 16.

The yarn 5 wound around the bobbin 16 is pulled out via a guide 17 and a tensioner (not shown).

A slider 12 provided at the bottom of the bobbin carrier 1 is in the shape of a plate with an uneven shape. The stator 3 faces the slider 12 of the bobbin carrier 1 with an extremely small gap therebetween, and is driven by the electromagnetic force of the stator 3 provided within the bobbin carrier moving plane 2.

Said bobbin carrier 1 is driven and braked not only by one set of opposing stators 3 but also by another set of stators which will be opposed after movement. Therefore, by appropriately controlling the plurality of stators 3, each bobbin carrier 1 can be moved to an arbitrary position.

That is, since the bobbin carrier 1 can be moved to an arbitrary position, a three-dimensional structure having an arbitrary cross-sectional shape can be formed.

The above is a method for moving the bobbin carrier vertically and horizontally.
Although a method using a linear motor has been described, a method of mechanically converting rotation to linear motion, such as a method using a pinion and a rack, etc. can also be used.

〔Effect of the invention〕

As explained above, since the present invention has a driving force for each bobbin carrier, the following effects can be obtained compared to the conventional technology.

(1) Effects of using a self-starting system for the bobbin carrier.

■ The device can be easily expanded, making it possible to weave large three-dimensional structures.

(2) Since the operation of each bobbin carrier can be controlled independently, a three-dimensional structure of any shape can be obtained with a single device, and the shape can be easily changed. In other words, it is possible to freely form a cross section that is asymmetrical or circular.

■ Since the operation of each bobbin carrier can be controlled independently, it is possible to continuously change the cross-sectional shape of the three-dimensional structure.

(2) Furthermore, the weaving structure is not just one, but various structures can be woven.

■ Hollow holes, especially multiple holes, etc., which were difficult with conventional methods)
A three-dimensional structure can be easily formed.

(2) Effects of using a linear motor as a drive device for the bobbin carrier.

■ The carrier can be driven at extremely high speeds compared to mechanical rotation-to-linear motion conversion methods.

(2) A self-(independent) drive device for the bobbin carrier has a simpler structure and easier control than a device using a mechanical rotation-to-linear motion conversion method.

■ Equipment expansion is easy and inexpensive.

■ Since the bobbin carrier is driven in a non-contact manner, the device has a long life and is virtually maintenance-free.

[Brief explanation of the drawing]

1 and 2 are plan views of a three-dimensional weaving device in which a large number of bobbin carriers are arranged on a carrier movement plane, and FIG. 3 shows the relationship between the front of the device and the drive control device. It is a diagram. FIG. 4 is a diagram showing an embodiment in which linear pulse smoke is applied as the method of driving the bobbin carrier. M... Three-dimensional weaving device, 1... Bobbin carrier, 2... Carrier movement plane,
3... Stator, 4... Frame, 5... Yarn, 6...
...Three-dimensional structure, 7... Take-up roller, 8... Controller, 9... Power driver, 10... Electrical wiring, 13... Caster, 14... Set screw, 15
...Shaft, 16...Bobbin, 17...Guide.

Claims (1)

[Claims] (1) A weaving method in which a three-dimensional structure of fibers is formed by vertically and horizontally moving a bobbin carrier carrying a bobbin wound with fibers, characterized in that each of the bobbin carriers is independently driven. Weaving method.