JPH10692A - Apparatus for producing fiber reinforced resin pipe or pipe joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wind fibers around a mandrel at a proper angle without cutting roving fibers or generating feathers by attaching at least one of two or more guides provided to a moving apparatus in a revolvable manner. SOLUTION: A feed eye 20 in an apparatus for producing a fiber reinforced resin pipe or a pipe joint is constituted by vertically providing first and second guides 23, 24 having a T-shape to the base end and leading end sides of an arm 22 provided to an attaching flange 21 in a protruding state in parallel and the first guide 23 can be revolved. The fixing flange 21 of the feed eye 20 is fixed to a moving device 31, that is, an articulated robot arm. By this constitution, the first guide 23 can be revolved with respect to the moving device 31 with the degree of freedom of two axes. Therefore, roving fibers 2 are not cut or fluffed and led out of the second guide 24 to be wound around a mandrel 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing fiber reinforced resin pipes or pipe joints in which fibers such as rovings are guided by a guide called a feed eye and wound around a form such as a mandrel. The present invention relates to an apparatus for manufacturing a fiber-reinforced resin pipe or a pipe joint capable of winding fibers at a predetermined angle with respect to a mandrel without cutting off roving fibers or the like.

[0002]

2. Description of the Related Art As a piping material, a fiber-reinforced resin pipe which is lightweight but has high rigidity and can carry high-pressure fluid is often used. The fiber reinforced resin pipe is connected by a T-tube made of fiber reinforced resin.

[0003] A T-tube made of fiber-reinforced resin is disclosed, for example, in Japanese Patent Application No. 7-33649 by the present applicant.
It is manufactured by a filament winding method in which a strip-shaped roving fiber is wound around a T-shaped mandrel. In this method, a rotating device 30 and a moving device 3 as shown in FIG.
1, and a manufacturing apparatus including the fiber supply device 32 is used.

The rotating device 30 includes a rotating shaft 10 for holding a T-shaped mandrel (mold) 1. The rotating shaft 10 has its distal end 11 bent in a V-shape, and its free end holds the main tube forming portion B on the base end of the mandrel 1 in a cantilevered state. The mandrel 1 is approximately 45 with respect to the center axis 12 of the rotating shaft 10.
The mandrel 1 rotates so as to draw a figure of eight by being held in the inclined posture of ° and rotating the rotating shaft 10.

[0005] A roving fiber 2 arranged in a belt shape is wound around such a mandrel 1. The strip-shaped roving fiber 2 is guided by a feed eye 100 that is held by a moving device 31 and traverses above the mandrel 1. Here, the moving device 31 is specifically an industrial robot, has two to six axes of freedom, and can move the feed eye 100 to a most optimal position. As shown in FIG. 8, the feed eye 100 is mounted on a base 130 at the distal end of the robot arm. An arm 102 is provided so as to protrude from a mounting flange 101, and a first end is provided at a base end side and a distal end of the arm 102. The guide 110 and the second guide 120 are set up in parallel. Both guides 110,
120 is a T-shape (an inverted T-shape in the drawing),
21 and the horizontal rods 112 and 122.
A comb-shaped slit for stretching the roving fiber 2 so that the roving fiber 2 is not entangled is formed in 122. In the prior art, the two guides 110 and 120 are both fixed integrally to the arm 102, and
Reference numerals 0 and 120 move integrally with the moving device 31 while maintaining a parallel positional relationship.

[0006] The roving fiber 2 is supplied from a fiber supply device 32 comprising a resin impregnation tank 3 and a fiber roll 4.
That is, the roving fiber 2 is immersed in the solution of the thermosetting resin stored in the resin impregnation tank 3 installed at a predetermined place, then hooked on the first guide 110, and parallelized by the second guide 120. It is stretched in a belt shape and wound around the mandrel 1.

As shown in FIG. 5A, the leading end of the roving fiber 2 has a branch tube forming portion A of the mandrel 1.
Adhered to. Next, the mandrel 1 is rotated by rotating the rotating shaft 10 as shown in FIG. 5B, and the roving fiber 2 is wound around the branch pipe forming portion A of the mandrel 1. As described above, when the mandrel 1 continues to rotate and the winding of the roving fiber 2 around the branch pipe forming portion A is completed, the roving fiber 2 forms the main pipe on the base end side of the mandrel 1 as shown in FIG. Wrap around part B.

Next, as shown in FIG. 6A, the roving fiber 2 is wound around the base pipe forming portion B on the base end side of the mandrel 1 rotated by the rotation of the rotating shaft 10. Subsequently, as shown in FIG. 6B, the roving fiber 2 moves to the main pipe forming portion C on the free end side of the mandrel 1. Finally, FIG.
As shown in (c), when the roving fiber 2 is wound around the main pipe forming portion C on the free end side of the mandrel 1 rotated by the rotation of the rotating shaft 10, the roving fiber 2 is cut.
In a series of steps, the feed eye 100 is traversed above the mandrel 1 by the moving device 31 of the industrial robot.

When the roving fiber 2 is wound on the branch pipe forming section A and the main pipe forming sections B and C of the mandrel 1 and the roving fiber 2 is further cut in this manner, the furnace enters the heating furnace. Then, the solution of the thermosetting resin impregnated in the roving fibers 2 is cured. When the mandrel 1 is extracted after the thermosetting resin solution is cured, a T-tube made of fiber reinforced resin is completed.

[0010]

The roving fibers 2 are aligned in a parallel band by the first guide 110 and the second guide 120 of the feed eye 100, and the mandrel 1 is formed.
Is wound around. In order for the roving fiber 2 to be wound in a desired state, that is, at a right angle to the mandrel 1, the first
It is preferable that the arm 102 of the feed eye 100 to which the first guide 110 and the second guide 120 are attached is always orthogonal to the winding portion of the mandrel 1.

However, on the other hand, the mandrel 1 for producing the T-tube has a branch pipe forming portion A, and the feed eye 100 must be moved so that the roving fibers 2 do not become entangled with the branch pipe forming portion A. And the mandrel 1 also rotates around. Therefore, in order to always orient the arm 102 of the feed eye 100 perpendicular to the winding portion of the mandrel 1, the feed eye 100 must perform a complicated movement.

However, the arm 10 of the feed eye 100
When the first guide 110 and the second guide 110 of the feed eye 100 move
The guide 120 is fixed to the arm 102, and the roving fiber 2 is in a state of being stretched between the resin impregnation tank 3 installed at a predetermined place and the first guide 110, As shown in FIG.
However, the angle α at which the first guide 110 is bent becomes steep. Then, the feeding of the roving fiber 2 is hindered, and an excessive load is applied to the roving fiber 2, and the roving fiber 2 is cut or fuzzed.

Accordingly, the present invention provides an apparatus for manufacturing a fiber-reinforced resin pipe or a pipe joint which can be wound at an appropriate angle around a mandrel without cutting or fluffing of roving fibers or the like. The purpose is to provide.

[0014]

A first means for solving the above problems is a rotating device for rotating a mold, and a moving device provided with a guide that moves near the mold and guides fibers. A member and a fiber supply device for supplying fibers to the guide, and a fiber-reinforced resin pipe or pipe joint manufacturing device for winding fibers supplied from the fiber supply device into a mold via a guide, wherein the moving device Has two or more guides, at least one of the guides being rotatably attached to a moving device, which is an apparatus for manufacturing a fiber-reinforced resin pipe or a pipe joint.

According to the first means, since the guide attached to the moving device is made rotatable, the guide can freely change its direction in the direction in which the fiber tension is applied. Therefore, the angle at which the fiber bends at the guide becomes gentle, and the tension applied to the fiber becomes small.

A second means which is a further improvement of the above invention is that the guide located closest to the fiber supply device is rotatably attached to the moving device with two or more axes of freedom. A second aspect of the present invention is an apparatus for manufacturing a fiber reinforced resin pipe or a pipe joint.

That is, the fiber is bent most strongly around the guide closest to the fiber supply device. In the present invention, since the guide closest to the fiber supply device is rotatably attached to the moving device with two or more axes of freedom, the load on the fiber is significantly reduced.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic view showing a state in which roving fibers are wound around a mandrel by the apparatus for manufacturing a fiber-reinforced resin pipe or a pipe joint according to the present invention. FIG. 2 is a schematic diagram showing a state different from FIG. 1 in which roving fibers are wound around a mandrel (mold) by the apparatus for manufacturing a fiber-reinforced resin pipe or a pipe joint according to the present invention. FIG.
1 is a schematic perspective view of a feed eye according to the present invention. FIG. 4 is an enlarged front view of a main part of the feed eye according to the present invention. Note that the same parts as those of the conventional technique are denoted by the same reference numerals, and description thereof will be omitted.

The apparatus for manufacturing a fiber reinforced resin pipe or a pipe joint according to the present invention is characterized in that the guide 23 of the feed eye 20 is provided. The feed eye 20 is provided with a T-shaped first guide 23 and a second guide 2 at the base end and the tip end of an arm 22 protruding from the mounting flange 21 as in the prior art.
The first guide 23 is rotatable, although the first and second guides 4 are erected in parallel. The first guide 23 is also the second guide 24
The vertical rods 23a, 24a attached to the arm 22 and the horizontal rods 23b,
The first guide 23 has a vertical rod 23a that rotates about the arm 22 and a horizontal rod 23b that rotates the vertical rod 2b.
It can rotate around 3a. That is, the first guide 23 is rotatably attached to the arm 22 with two degrees of freedom.

The length of the feed eye 20, more specifically, the distance l (FIG. 2) between the first guide 23 and the second guide 24 is longer than the length L of the branch pipe of the mandrel 1, and Care is taken to prevent the branch pipe from hitting the roving fiber 2 when 1 rotates.

The fixed flange 21 of the feed eye 20 is fixed to a moving device 31, that is, an articulated robot arm. Therefore, the first guide 2
3 is rotatable with respect to the moving device 31 with two degrees of freedom. The robot arm has about two to six axes of freedom, and the arm 22 of the feed eye 20 fixed to the tip of the free end shaft 33 moves along the mandrel 1 along a predetermined locus, and Arm 22 of eye 20
Can be oriented at right angles to the winding direction of the mandrel 1.

In addition, since the T-shaped mandrel 1 and the rotating device 30 for rotating the mandrel 1 are the same as those in the related art, the description thereof will be omitted. Next, a method for manufacturing a T-tube using the manufacturing apparatus of the present embodiment will be described.

To manufacture a T-tube, the roving fiber 2 is immersed in a thermosetting resin liquid in a resin impregnation tank 3 installed at a predetermined position, and the roving fiber 2 is fed to the feed eye 2.
0 first guide 23 and horizontal guide 24b of second guide 24
Stretched over. At this time, the moving device 31 is controlled such that the arm 22 of the feed eye 20 is orthogonal to the winding position of the mandrel 1, as shown in FIG. The roving fiber 2 led out from the second guide 24 of the feed eye 20 is wound around the mandrel 1 in a parallel band shape.

The mandrel 1 is a rotating shaft 1 bent in a V shape.
Since it is held at 0, the mandrel 1 rotates in an inclined posture by the rotation of the rotating shaft 10. At this time, as shown in FIG. 2, the moving device 31 follows the posture of the mandrel 1 such that the arm 22 of the feed eye 20 is orthogonal to the winding position of the roving fiber 2. Since the second guide 24 of the feed eye 20 attached to the moving device 31 is fixed to the arm 22, the second guide 24 faces the mandrel 1 in parallel, and the roving fiber 2 derived from the second guide 24 is parallel. Wound on mandrel 1.

However, the roving fiber 2 is provided in the resin impregnation tank 3
The second guide 24 is bent by the first guide 23 between the first guide 23 and the second guide 24, so that tension is applied. However, since the first guide 23 freely rotates in two axial directions with respect to the arm 22, as shown in FIG. 4, the direction of the roving fiber 2 is changed to a state in which the tension is not applied most. Specifically, in the present embodiment, the first guide 23 has the vertical
Since the guide 23 rotates about the center axis 2, the guide 23 rotates in accordance with the vertical movement of the arm 22. Also the horizontal rod 23
Since b can rotate around the vertical rod 23a as a central axis, the guide 23 rotates according to the horizontal movement of the arm 22. As a result, the angle α at which the roving fiber 2 bends at the portion of the first guide 23 becomes gentler than in the case of the related art (see FIG. 9), and the load applied to the roving fiber 2 is reduced.

Accordingly, the roving fiber 2 is led out of the second guide 24 without being cut or fluffed and wound around the mandrel 1. After the roving fiber 2 is wound around the branch pipe forming section A and the main pipe forming sections B and C of the mandrel 1, the roving fiber 2 is cut, and the solution of the thermosetting resin impregnated in the roving fiber 2 is cured. Thereafter, when the mandrel 1 is removed from the mold, a T-tube made of fiber reinforced resin is completed.

In the above embodiment, the first guide 23
Has disclosed that it rotates in two axial directions.
It may be one that rotates more than the axis. In the above-described embodiment, the feed eye 20 includes two guides 23,
Although one having 24 is illustrated, it may be one having three or more guides. When a feed eye having three or more guides is employed, it is desirable that the guide at the most proximal end, in other words, the position closest to the resin supply device, is rotatable. It is desirable that the second and subsequent guides are also rotatable. However, when the second and subsequent guides are rotatable, the guide rotatable angle increases from the base end toward the free end. It is recommended to reduce the size or the number of rotatable shafts and to reduce the degree of freedom of the guide on the free end side. Further, in the above embodiment, the case of manufacturing the T-tube has been described. The present invention can be applied to the case where the resin tube itself is manufactured.

[0028]

According to the present invention, since the guide attached to the moving device is made rotatable, the angle at which the roving fiber bends around the guide can be made gentle. Therefore, the tension applied to the roving fiber is reduced, and the roving fiber is not cut or fluffed. As a result, by using the apparatus according to the present invention, the productivity of the fiber-reinforced resin pipe or the pipe joint made of the fiber-reinforced resin is improved, and the fiber-reinforced resin pipe or the pipe joint made of the fiber-reinforced resin having excellent quality. Can be manufactured.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a state in which roving fibers are wound around a mandrel by the apparatus for manufacturing a fiber-reinforced resin pipe or a pipe joint according to the present invention.

FIG. 2 is a schematic view showing a state different from FIG. 1 in which roving fibers are wound around a mandrel by the apparatus for manufacturing a fiber-reinforced resin pipe or a pipe joint according to the present invention.

FIG. 3 is a schematic perspective view of a feed eye according to the present invention.

FIG. 4 is an enlarged front view of a main part of a feed eye according to the present invention.

FIG. 5 is a schematic view showing a step of manufacturing a branch pipe portion of the fiber reinforced resin pipe joint.

FIG. 6 is a schematic view showing a step of manufacturing a main pipe part of a fiber reinforced resin pipe joint.

FIG. 7 is a schematic view showing a state in which roving fibers are wound around a mandrel by a conventional apparatus for manufacturing a fiber-reinforced resin pipe or a pipe joint.

FIG. 8 is a schematic perspective view of a conventional feed eye.

FIG. 9 is an enlarged front view of a main part of a conventional feed eye.

[Explanation of symbols]

 Reference Signs List 1 mandrel 2 roving fiber 20 feed eye 22 arm 23 first guide 24 second guide 23a vertical rod 23b horizontal rod 31 moving device 32 fiber supply device

Claims (2)

[Claims] 1. A rotating device for rotating a mold, a moving member having a guide that moves near the mold and guides fibers, and a fiber feeder that supplies fibers to the guide,
In a manufacturing apparatus of a fiber reinforced resin pipe or a pipe joint, in which a fiber supplied from a fiber supply device is wound around a mold via a guide, the moving device is provided with two or more guides, and at least one of the guides is at least one of the guides. An apparatus for manufacturing a fiber-reinforced resin pipe or a pipe joint, which is rotatably attached to a moving device. 2. The fiber-reinforced resin according to claim 1, wherein the guide closest to the fiber supply device is rotatably attached to the moving device with two or more axes of freedom. Equipment for manufacturing pipes or fittings.