JPH07315687A - Winding method for asymmetrical axial object - Google Patents

Abstract

PURPOSE:To provide a winding method for winding a linear or strip-like winding material around as asymmetrical axial object having two non-parallel shaft by a FW method without twisting the winding material. CONSTITUTION:When a winding material 4 is wound around one shaft of rotary shafts, it is wound without rotating a guide 3 around one shaft. When the winding material 4 is wound around the other shaft which is not a rotary shaft, the guide 3 is turned around the other shaft while the rotary shaft is rotated by the same number of times as the winding material in the opposite direction.

Description

Detailed Description of the Invention

[0001]

This invention relates to filament winding (F) around a non-axisymmetric object having two non-parallel axes.
The W method) relates to a method for winding a non-axisymmetric object in which a linear or strip-shaped object is wound without twisting.

[0002]

2. Description of the Related Art As a non-axisymmetric object having two non-parallel axes, for example, a core die a for forming a T-shaped pipe joint having a main pipe axis x and a branch pipe axis y is used as shown in FIG. And core a
When the wound object b is wound around, the core die a is first rotated around the main pipe axis x to wind the wound object b around it, and then shown in FIG. 3 (b). As shown in FIG.
F to rotate the object b to be wound around it F
The W method is generally used. However, in the FW method in which the rotating shafts are replaced one by one in this way, there is a problem that the rotating shaft replacement work is complicated and the productivity is extremely poor.

Therefore, for example, Society of
Manufacturing Engineers E
In M90-662-1 to 14, as shown in FIG. 4 (a), first, the core die c is rotated around m of the main pipe axis p to wind the wound object b around it, and then, as shown in FIG. As shown in (b), a method has been proposed in which the rotation of the main pipe axis p is stopped and the guide d is wound around the branch pipe axis q of the core die c to wind the wound object b around the guide d. ing.

[0004]

However, in the SW method, when the guide d is rotated around the branch pipe axis q of the core die c, the wound object b is twisted and the wound object b is wound. There is a problem in that the product value is reduced, for example, a part is wound while being twisted, and the product strength is reduced and there is a problem in appearance.

The present invention solves the above problems and winds a linear or strip-shaped object to be wound around the non-axisymmetric object having two non-parallel axes by the FW method without twisting. The purpose is to provide a method for winding a non-axisymmetric object to be rotated.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a non-axisymmetric object having two non-parallel axes is held in a cantilever manner and is rotated linearly while rotating in the circumferential direction about the axis. A method of winding a non-axisymmetric object in which a belt-shaped object to be wound is wound around a guide, and when the object to be wound is wound around one axis that is a rotation axis, the guide is used to When the object to be wound is wound around the other axis, which is not the rotation axis, without rotating it around, the guide is rotated around the other axis and the rotation axis is rotated around the guide. It is a method of winding a non-axisymmetric object, characterized in that it is rotated in the opposite direction to the guide by the same number of turns as the number of turns.

In the present invention, as the non-axisymmetric product having two non-parallel axes, for example, a core for forming a T-shaped pipe joint and an elbow pipe joint made of fiber reinforced resin (FRP) by the FW method. There are types.

In the present invention, examples of the linear or strip-shaped object to be wound include roving in which a large number of filaments are bundled, continuous strands in which filament strands are arranged in a two-dimensional random arrangement and bonded with a binder. A swirl mat in which mats and strand bundles are arranged in a circle (swirl) and joined by needle punching,
Examples include linear or strip-shaped rovings that are plain woven or satin woven, continuous reinforcing fibers such as roving cloth, and thermosetting resin-impregnated reinforcing fibers obtained by impregnating these continuous reinforcing fibers with a thermosetting resin. To be

In the present invention, rotating the guide around the other axis and rotating the rotating shaft in the opposite direction to the guide means that the guide is rotated around the other axis. When it is counterclockwise when viewed from the supply side of the rotating object, the direction of rotation that rotates the rotating shaft is clockwise when viewed from the supply side of the wound object, and when the former is clockwise, the latter is counterclockwise. It means being around.

[0010]

According to the method of winding a non-axisymmetric product of the present invention, a non-axisymmetric product having two non-parallel axes is held by one of the shafts in a cantilever manner and is rotated in the circumferential direction with the shaft as a rotation shaft. A method for winding a non-axisymmetric object in which a strip-shaped or strip-shaped wound object is wound through a guide, and when the wound object is wound around one axis that is a rotation axis, the guide is When the object to be wound is wound around the other axis that is not the rotation axis without rotating it around the other axis, the guide is rotated around the other axis and the rotation axis is guided. By rotating in the opposite direction from the guide by the same number of turns as the number of turns of the guide, the twisting due to the object being wound around the branch pipe forming part causes the rotating shaft to rotate only the same number of turns as the guide. Since it is solved by rotating in the opposite direction, two axes that are not parallel Around the non-axisymmetric products have, it can be wound without being twisted linear or strip-shaped object to be winding material.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. 1 and 2 are explanatory views sequentially showing steps of a method for winding a non-axisymmetric object of the present invention. In FIGS. 1 and 2, 1 is a core die for molding a T-shaped pipe joint, 4 is a linear or strip-shaped wound object, 2 is a bobbin which is a wound object of the wound object 4,
3 is a guide. The core die 1 includes a main pipe forming portion 11 and a branch pipe forming portion 12.

As shown in FIG. 1, first, the core die 1 is rotated counterclockwise (see FIG. 1 from the supply side (the left side of the drawing in FIG. 1) of the material 4 to be wound around the main pipe forming portion 11 as a rotation axis. The object to be wound 4 is unwound from the bobbin 2, passed through the guide 3, and wound around the main pipe forming portion 11 while being rotated (indicated by the arrow m). The rotation direction of the main pipe forming portion 11 may be clockwise in some cases, and the guide 3 may be traversed along the axial direction of the main pipe forming portion 11 as necessary.

Next, as shown in FIGS. 2A to 2C, the guide 3 is wound around the branch pipe forming portion 12 on the supply side of the material to be wound 4 [in FIGS. 2A to 2C, The object to be wound 4 is wound around the branch pipe forming portion 12 by making a turn in a counterclockwise direction (shown by an arrow n in FIGS. 2A to 2C) when viewed from above the paper surface. To go. At this time, in synchronization with the rotation of the guide 3, the main pipe forming portion 11 of the core die 1 is rotated clockwise about the number of revolutions of the guide about the rotation axis.

As a result, the twist caused by the guide 3 being circulated around the branch pipe forming portion 12 causes the main pipe forming portion 11 to be twisted.
Is eliminated by rotating the guide in the clockwise direction by the same number of turns as the number of turns of the guide, so that the linear or strip-shaped wound object 4 is twisted around the core die 1 having two axes that are not parallel. It can be wound without.

[0015]

[Embodiment] That is, to explain in more detail, FIG.
Shows the state after the wound object 4 has been wound around the branch pipe forming portion 12 once in the counterclockwise direction. At this time, the guide 3 is wound around the branch pipe forming portion 12 once. In this case, the main pipe forming portion 11 is rotated once and rotated once in the clockwise direction. In this case, the twist of one rotation due to the winding of the wound object 4 around the branch pipe forming portion 12 is: Main pipe forming part 11
Is solved by making one rotation in the clockwise direction. .

FIG. 2C shows a state after the object to be wound 4 is further wound around the branch pipe forming portion 12 in a counterclockwise direction by a half turn from the state shown in FIG. 2B. As shown, at this time, the guide 3 is rotated around the branch pipe forming portion 12 a half turn, and the main pipe forming portion 11 is rotated clockwise half a turn.

In this case, the material to be wound 4 has the branch pipe forming portion 12
Twisting for one rotation due to the rotation of the main pipe forming portion 11 is eliminated by rotating the main pipe forming portion 11 once in the clockwise direction. In this way, by sequentially winding the twist of the wound object 4 around the branch pipe forming portion 12, the wound object 4 can be wound. In this case, the bobbin 2 is not rotated around the main pipe forming portion 11 and the branch pipe forming portion 12, but the guide 3 is traversed along the axial direction of the branch pipe forming portion 12 as necessary. Good.

【The invention's effect】

As described above, since the method for winding the wound object of the present invention is configured as described above, a linear or strip-shaped object is formed around a non-axial object having two axes that are not parallel to each other. The wound object can be wound without being twisted.

[0019]

[Brief description of drawings]

FIG. 1 is a diagram illustrating a first half step in an example of a method for winding a non-axial object according to the present invention.

FIG. 2 is a front view for explaining the latter half of the steps in the example of the method for winding a non-axial object according to the present invention, in which FIG. 2 (a) shows the wound object wound around the branch pipe forming portion once. The front view which shows a state, (b) is the front view which shows the state which wound 1 round and a half, (c)
[Fig. 3] is a front view showing a state in which it is wound twice.

FIG. 3 is an explanatory diagram showing an example of a conventional FW method,
(A) is a front view showing a state in which an object to be wound is wound around a core type main pipe forming part as a rotation axis, and (b) is a surrounding view around the core type branch pipe forming part as a rotation axis. It is a front view which shows the state which winds a wound thing.

FIG. 4 is an explanatory diagram showing another example of a conventional FW method,
(A) is a front view showing a state in which an object to be wound is wound around a core type main pipe forming portion as a rotation axis, and (b) shows a state in which rotation of the core type main pipe forming portion is stopped and a guide is formed by a guide. It is a front view which shows the state which winds the wound material around a branch pipe formation part.

[Explanation of symbols]

 1 core type 2 bobbin 3 guide 4 wound object 11 main pipe forming part 12 branch pipe forming part m, n counterclockwise direction

Claims (1)

[Claims] 1. A non-axisymmetric object having two non-parallel axes is held by one of the axes in a cantilever manner, and a linear or strip-shaped object to be wound is guided while rotating in the circumferential direction with the axis as a rotation axis. It is a method of winding a non-axisymmetric object that winds around a shaft to be wound around one axis, which is a rotation axis, without winding the guide around the one axis. When the object to be wound is wound around the other axis that is not the rotation axis, the guide is rotated around the other axis, and the rotation axis is rotated by the same number of times as the guide. A method for winding a non-axisymmetric object, characterized by rotating in opposite directions.