JPH02182954A - Machine for weaving three-dimensional fabric - Google Patents

Abstract

PURPOSE:To take out a filament yarn at a right angle to the carrier-track surface or an angle close thereto by equipping a unit for setting the fell of cloth capable of concentrating filament yarns unwound from traveling bobbing and forming the fell of a three-dimensional fabric inside the carrier-track surface consisting of a closed surface. CONSTITUTION:The carrier-track surface on which bobbin carriers 7 travel is formed into a spherical- or cylindrical-shaped closed surface and the fell of a three-dimensional fabric is formed inside the carrier-track surface using the unit 10 for setting the fell of cloth. As the unit 10 for setting the fell of cloth, a mandrel 11 capable of formation of the objective three-dimensional shaped fabric by holding the end of a filament yarn unwound from a bobbin and moving the filament yarn along the outer surface thereof can be equipped.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for weaving a three-dimensional am structure.

[Prior Art] A three-dimensional cloth weaving method in which a three-dimensional cloth is weaved by applying motion to a bobbin carrier that supports a bobbin so that it travels along a required trajectory, and mutually weaving threads unwound from a plurality of bobbins. A weaving device has already been disclosed in U.S. Pat. No. 4,312,28.
No. 1, specification, Japanese Patent Publication No. 81-1538, etc.

The three-dimensional cloth weaving device disclosed in the former has a large number of carriers arranged vertically and horizontally in a box-shaped frame.

It is configured so that each carrier in each row and column can be suppressed and moved in the direction of arrangement. For example, after moving a group of carriers in a desired row or column by one carrier in the direction of arrangement, the threads are combined. By repeating this process, a three-dimensional cloth is woven.

On the other hand, in the weaving apparatus disclosed in the latter, the bobbins are sequentially received and passed by carrier arms of bobbin carriers arranged vertically and horizontally.

However, in all of these three-dimensional cloth weaving devices, the carrier track surface on which the bobbin carrier travels is a flat surface. Therefore, for example, if the weaving opening is located at the upper center of the flat carrier track surface, The yarn is drawn out perpendicularly to the carrier orbital plane from the bobbin carrier located directly under the weave opening, but the yarn is led out diagonally from the bobbin carrier located away from directly under the weaving opening. ,
When the bobbin carrier moves between these positions, the difference in path between the bobbin carrier and the weave causes slack and tension in the yarn. Further, there are other problems such as the tension on the yarn fluctuating depending on the position of the bobbin carrier, and when the yarn is guided by a guide or the like, the bending angle of the yarn increases, making it more likely to be damaged by friction.

Therefore, the shape and size of the three-dimensional cloth to be woven are limited, making it difficult to respond to the diversification of textile structures.

[Problems to be Solved by the Invention] A technical problem of the present invention is to give motion to a bobbin carrier that supports a bobbin so that it runs on a required trajectory, and to organize yarns unwound from a plurality of bobbins into each other. When weaving a cloth with a three-dimensional shape, the yarn is always guided out perpendicularly from the carrier raceway plane or close to it and reaches the weave of the three-dimensional cloth, so that when the bobbin carrier moves, the bobbin and the weave are The object of the present invention is to prevent the occurrence of a large path difference between the threads, reduce damage to the threads, and easily weave three-dimensional fabrics of various shapes and sizes, or of various fabric structures.

[Means for Solving the Problems] A weaving device of the present invention for solving the above problems applies motion to a bobbin carrier that supports the bobbins so as to travel along a required trajectory, and unwinds a weaving device from a plurality of bobbins. In an apparatus for weaving three-dimensional cloth by weaving threads together, the carrier raceway surface on which the bobbin carrier runs is constituted by a closed curved surface in the form of a spherical or cylindrical surface, and the inside of this carrier raceway surface is The present invention is constructed by providing a weave setting means for converging yarns unwound from a traveling bobbin to form a three-dimensional cloth weave.

[Function] In this weaving device, the carrier raceway surface on which the bobbin carrier runs is a closed curved surface in the form of a spherical or cylindrical surface,
Since the opening of the three-dimensional cloth is formed inside this carrier raceway surface, when weaving by giving motion to the bobbin carrier so that it travels along the required trajectory, it is always perpendicular to the carrier raceway surface or close to it. In this state, the thread is guided out and reaches the weave of the three-dimensional fabric. Therefore, when the bobbin carrier moves, there is no large path difference between the bobbin and the weave, and the thread is pulled out due to the friction caused by the guide etc. damage is reduced.

[Example] FIG. 1 shows an example of the weaving apparatus according to the present invention, and the second
The figure shows an example of a bobbin drive device suitable for use in the weaving apparatus of the present invention.

The above-mentioned weaving device weaves a three-dimensional cloth by applying motion to a bobbin carrier that supports the bobbins so as to travel along a required trajectory, and mutually organizing the rovings unwound from a plurality of bobbins. . Note that the above roving refers to glass roving or carbon roving.
It refers to a fiber bundle made of aligned filaments such as glass fiber or carbon fiber, which is called roving.
Various threads can be used without being limited to such roving.

A frame 1 supporting the entire weaving apparatus includes a support column 2, a top frame 3 and a bottom frame 4 attached thereto, and a support frame 5 for shaping the carrier track surface.

The bobbin drive device 6 attached to the support frame 5 is used to move the bobbin carrier 7 along a carrier track surface made of a closed spherical curved surface. Therefore, the support frame 5 itself is also formed in a spherical shape. However, in terms of wood quality, it is sufficient that the carrier raceway surface on which the bobbin carrier 7 is run by the bobbin drive device 8 is spherical.As will be described later, this carrier raceway surface may be a cylindrical closed curved surface. You can also.

Further, the frame 1 is provided with a weave setting means, which is located inside the carrier track surface and which collects the rovings unwound from the bobbin 8 held by the bobbin carrier 7 and travels to form the weave of the three-dimensional cloth. lO is provided. As the weave setting means 10, any means for setting the weave of the three-dimensional cloth at a desired position can be adopted, for example, as shown in FIG. Hold the tip of the roving unwound from bobbin 8 in position.

By placing the roving along the outer surface, it is possible to provide a mandrel 11 having a desired three-dimensional shape.

This mandrel 11 can be replaced with one of various shapes depending on the shape of the three-dimensional cloth to be woven.

Since it is removably attached and its position needs to be changed as the weaving progresses, the bottom frame 4 is guided up and down by guides 12 and 12, and a feed screw is rotated by a motor (not shown). 3 into the bottom frame 4, and then tighten the feed screw! It can be raised and lowered by rotating 3.

Further, as the weaving opening setting means 10, a reed beating device 2,
It is also possible to use a fabric regulating device or the like.

The above-mentioned weaving front regulating device controls the mandrel as the weaving progresses.
It is constructed by making a hollow i-front regulation frame placed at a predetermined position around the frame 1 movable up and down with respect to the frame 1.

Next, with reference to FIG. 2, an example of a bobbin drive device that provides the required movement to the bobbin carrier 7 will be described in detail.

The bobbin drive device C shown in FIG. 2 includes a drive source 2 such as a motor.
A large number of drive units consisting of a rotor 21 and a rotor 21 are arranged along a spherical or cylindrical carrier raceway surface (drawn as a flat surface for ease of illustration). The range of movement of the bobbin carrier 7 is set by this.

In the large number of drive units constituting the bobbin drive device 6, each drive source 20 is capable of independently controlling forward and reverse rotational drive by a control device (not shown).
The rotors 21 provided in each drive unit are installed in a spherical or cylindrical shape by arranging them adjacent to each other in multiple rows and multiple columns in the movement area of the bobbin carrier 7, and the bobbin carrier 21 is installed between a pair of adjacent rotors. Recessed portion 2 that holds 7
2 are provided. The recesses 22 of these rotors are formed in such a shape that when one of the pair of rotors 21, 2+ in contact with each other rotates, the bobbin carrier 7 held therebetween can be moved using the recess 22 of the other rotor as a guide. Therefore, the inner surface of the recess 22 is formed into a cylindrical surface centered on the rotation axis of the adjacent rotors, or a rotation surface functionally equivalent thereto.

Note that the drive source 20 of the drive unit is as follows.

Although various drive devices can be used, a drive mechanism that uses an internal Geneva to intermittently rotate the rotor 21 in forward and reverse directions can be used.

On the other hand, the bobbin carrier 7 held between the rotors 21 has a holding part 25 formed of two cylindrical surfaces so as to fit into the space formed between the recesses 22 of the pair of adjacent rotors 21. It has a collar part 26 projecting upward and downward, and a support shaft 27 for fitting the pobbin 8 thereto is provided upright.As is clear from the above, the holding part 25 is attached to the It is fitted into and held between the recesses 22, and is movable in any direction by rotation of one rotor 21. The pobbin 8 inserted into the support shaft 27 in the pobbin carrier 7 has a necessary tension applying device 2.
8, through which the roving to be woven is derived.

FIG. 3 shows a tension applying device 2 suitable for the pobbin drive device described above.
8 is shown.

This tension applying device 28 has a fixing plate 3 attached to the tip of a support shaft 27 erected on a bobbin carrier 7 in a bobbin drive device.
0 can be attached with a single touch, and a large number of friction rods are placed on the outer periphery of the pobbin 8 and parallel to the axis of rotation of the pobbin 8 for winding the roving unwound from the pobbin 8. 31.31. ...are arranged in a ring. Further, the fixed portion on or near the fixed plate 3o on one end side of the friction rods 31.3+, .
Thread guide 32 that guides the unwound roving from the pobbin
is provided, and the roving is led out through a thread lead-out guide 34 provided at the tip of a conical cover 33 attached to the fixed plate 30.

In such a thread tensioning device, the a-ping unwound from the pobbin 8 is connected to at least one friction rod 31.
The thread guide 3 on the fixed plate 30 is passed through the thread guide 3 on the fixing plate 30 after passing through the thread guide 3 on the fixed plate 30 through a spiral path.
By guiding the yarn through the thread guiding guide 34 provided on the thread pulling guide 34 provided on the thread pulling guide 34 provided on the thread pulling guide 34 provided on the thread pulling thread 2 and the cover 33, even if the drawing position of the thread in the pocket 8 moves in the axial direction of the thread pulling shaft 31,
, 31. The inclination of the roving that is spirally wound around the ... only changes slightly, and there is almost no change in the frictional force associated with it, so the roving can be drawn out with a constant tension regardless of the position at which the roving is pulled out from the pobbin 8. It becomes possible to do so.

In the three-dimensional cloth weaving device equipped with the above bobbin drive device, the bobbin carrier 7 is supported between a large number of adjacent pairs of rotors 21, 21, and one of the pair of rotors 21, 2+ supporting the bobbin carrier 7 is provided. Due to the rotation of
The bobbin carrier 7 can be moved using the other rotor as a guide, and by repeating this operation,
A large number of bobbin carriers 7 are moved in two arbitrary axial directions,
As a result, these bobbin carriers 7 are made to travel a required trajectory, and the Z rovings unwound from the bobbin 8 supported by them are organized and aligned with each other along the mandrel 11, thereby adjusting the shape of the mandrel H. Three-dimensional cloth is woven.

In this case, in the above-mentioned weaving device, the carrier track surface on which the bobbin carrier 7 runs is a spherical closed curved surface,
The opening of the three-dimensional cloth is formed at a position close to the center of the spherical surface on the inside of this carrier raceway surface, so that the bobbin carrier 7 is given motion so as to travel along a required trajectory for weaving. In this case, the roving is always drawn out perpendicularly or nearly vertically from the carrier orbital plane and reaches the weave of the three-dimensional fabric, so that when the bobbin carrier 7 moves, a large path difference occurs between the bobbin 8 and the weave. Moreover, damage to the roving due to friction caused by the guide or the like, which would occur if the carrier raceway surface is flat, is reduced.

Note that the carrier orbital surface is not limited to a spherical shape;
It may also be a closed curved surface in the form of a cylindrical surface, and in that case, the carrier raceway surface and the weave zero setting means 10 may be moved vertically relative to each other as necessary. It is necessary that the rovings in the textile weaving are led out from the carrier raceway surface, which is a closed cylindrical curved surface, toward the weave in a direction as close to perpendicular as possible. Further, the bobbin drive unit N8 is not limited to the configuration shown in FIG. 2, but may include a bobbin carrier that supports the bobbin so as to travel along a required trajectory along a closed curved surface in the form of a spherical or cylindrical surface. Anything that gives motion to the person is fine.

The three-dimensional cloth woven in this manner can be effectively used as a reinforcing material for forming, for example, parabolic antennas, helmets, cones, speaker cones, and the like.

[Effects of the Invention] According to the weaving apparatus of the present invention as described in detail above, the bobbin carrier supporting the bobbins is given motion so as to travel along a required trajectory, and the threads unwound from a plurality of bobbins are moved. When weaving three-dimensional cloth by weaving each other, the threads are always drawn out perpendicularly or nearly vertically from the carrier raceway plane and reach the weaving opening of the three-dimensional cloth. Therefore, when the bobbin carrier moves, the threads are drawn out perpendicularly or nearly vertically from the carrier raceway surface, so that the bobbin and the weave do not overlap when the bobbin carrier moves. Since there is no large path difference between the thread and the thread, and there is no need to change the angle of the thread by guides, etc., damage to the thread is reduced, and as a result, the texture of the fabric is improved. This makes it possible to adapt to the diversification of shapes and sizes, as well as larger looms.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view showing an embodiment of a weaving device according to the present invention, FIG. 2 is an enlarged side view of main parts showing an example of a bobbin drive device, and FIG. 3 is a suitable tension application to the bobbin drive device. FIG. 2 is an exploded perspective view of the device. 711・Bobbin carrier, 8・・Bobbin, 10φ・
Cloth setting means.

Claims (1)

[Claims] 1. Weaving a three-dimensional cloth by giving motion to a bobbin carrier that supports the bobbins so that they run along a required trajectory, and mutually weaving yarns unwound from a plurality of bobbins. In the device, the carrier raceway surface on which the bobbin carrier runs is constituted by a spherical or cylindrical closed curved surface, and the yarn unwound from the traveling bobbin is focused on the inside of this carrier raceway surface, A weaving device for three-dimensional cloth, characterized in that it is provided with a weave setting means for forming a weave of the three-dimensional cloth.