JPH09123297A - Filament winding molding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filament winding molding device capable of easily performing a preliminary work for switching the size of an aperture of FRPM to be produced, in a short time. SOLUTION: This FW molding device has a cylindrical molding die 16 formed of a strip element to be transferable in the axial direction while rolling on a mandrel in the peripheral direction. In addition, a plurality of lift devices 12 for supporting the strip element 14 are arranged on the mandrel 11 in the peripheral and the axial direction. Thus, the diameter of the molding die 16 is freely expandable and shrinkable by the up and down operation of the lift devices 12, so that the switching of the aperture size is possible.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an FW molding apparatus for molding a fiber-reinforced resin pipe by a filament winding (hereinafter, referred to as FW) method.

[0002]

2. Description of the Related Art The FW method is a method in which a continuous roving or strand of fibers is fed through a resin tank through rollers and guides, and is wound on a mold at a predetermined angle using a program-controlled machine, usually a cylinder. The resin is a forming method including a step of partially or completely curing the resin before removing the shaped part from the mold.

Conventionally, a resin concrete fiber reinforced resin pipe (hereinafter referred to as FRP) in which inner and outer surface layers made of fiber reinforced resin are provided on the inner and outer surfaces of a resin concrete layer by using the FW method.
As a molding device for molding (referred to as “M”), FIG.
As shown in (c), on the mandrel a which is the machine core,
Every time the product aperture size is changed, 6 to 10 discs b of each product aperture size are manually attached by bolts and nuts so that they are juxtaposed at equal intervals in the axial direction, and then the circumference of the disc b 40 ~ 5 roller beam c in the direction
About 0 pieces are fixed manually, and a steel belt d is regularly wound around the roller beam c in a spiral shape without a gap, and a mandrel a is rotated by a motor f while being driven by a driving roll e. A forming die is adopted in which the steel belt d is rotated in the circumferential direction and propelled at an arbitrary production speed that moves in the axial direction.

Further, the steel belt d is endless, and after being wound around the mandrel a, it returns to the origin through a central hole provided for passing the steel belt d, and is wound around the mandrel a again. It is structured. Further, the mandrel a needs to have a strength that can withstand the minimum weight of the product due to problems in molding or manufacturing (smoothness of inner surface, management of wall thickness, etc.).

[0005]

However, in the conventional molding apparatus as described above, every time the size of the FRPM to be produced is changed, a setup change operation such as a steel belt attachment / detachment, a roller beam attachment / detachment, or a disc replacement is performed. Since it is necessary, there is a problem that it is complicated and that the setup change work takes time and the production efficiency cannot be improved.

The present invention has been made for the purpose of providing an FW molding apparatus capable of simply performing a setup work for changing the size of the FRPM to be produced, in a short time.

[0007]

The invention according to claim 1 of the present application (hereinafter referred to as the present invention 1) is formed from a belt-like body which is movable in the axial direction while rotating in the circumferential direction on a mandrel. In an FW molding apparatus having a cylindrical molding die, a plurality of elevating devices for supporting the strip-shaped body are arranged on a mandrel along a circumferential direction and an axis, and the elevating device elevates and lowers the molding die. It is an FW molding device that can be expanded and reduced in diameter and can be changed in size.

The invention according to claim 2 of the present application (hereinafter referred to as the present invention 2) is the FW according to the present invention 1 in which the molding die is capable of expanding and contracting diameters by the ascending and descending movements of all the elevating devices. It is a molding device.

In the present invention 1 and the present invention 2 (hereinafter collectively referred to as the present invention), examples of the lifting device include a jack and a link mechanism.

In the present invention 1, examples of the belt-like member include a steel belt and paper used for forming a paper core. In the case of a steel belt, an endless member is circulated. Used.

[0011]

In the FW molding apparatus of the present invention 1, a plurality of elevating devices for supporting the band-shaped body are arranged on the mandrel in the circumferential direction and along the axis, and the molding die is expanded and contracted by elevating the elevating devices. Since the diameter can be freely changed and the size of the FRPM to be produced can be changed, the belt can be rotated in the circumferential direction and moved in the axial direction at a low speed when the size of the produced FRPM is changed. While performing, the elevating device is gradually expanded and contracted so that the molding die is finally expanded and contracted to the size of the caliber, whereby the setup change operation can be performed easily and in a short time.

In the FW molding apparatus according to the first aspect of the present invention, since the molding die can be expanded / contracted freely by the ascending / descending movements of all the elevating / lowering devices, the setup change operation can be automated.

[0013]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing an example of the FW molding apparatus of the present invention, where (a) is a partial cross-sectional view showing the entire structure, (b) is a front view showing the main part of (a), (c) is a sectional view taken along the line AA in (a).

Numeral 1 is an FW molding apparatus, and an elevating device 12 composed of a plurality of jacks for supporting a steel belt (band) 14 is arranged on a cylindrical mandrel 11 along the circumferential direction and the axial direction. It is set up. The lifting device 12 includes a fixed plate 121, an expansion plate 122, and a top plate 123.
And the roller beam 13 is arranged on the surface of the upper plate 123.

Around the mandrel 11, the steel belt 1 is formed so as to be in point contact with a number of roller beams 13.
4 is regularly spirally wound with no gaps, and is rotated by the motor 15 in the circumferential direction of the mandrel 11 and driven by the drive roll 16 to rotate in the circumferential direction and move in the axial direction to be propelled at an arbitrary production speed. A molding die 17 capable of being formed is formed.

The steel belt 14 is endless and, after being wound around the mandrel 11, passes through a central hole provided in the mandrel 11 for passing the steel belt 14 through a drive roll 16 and a turn roll 17. Is turned to return to the origin and is wound around the mandrel 11 again.
Although not particularly shown, the steel belt 14 can be adjusted in belt length and tension according to a conventionally known appropriate means in accordance with the change of the diameter.

A large number of screws 18 are laid along the axial direction on the mandrel 11, and a clutch (not shown) is separated by a motor 19 (disengaged except for switching work, and is in a connected state at the time of switching). ) And gears 20, all the screws 18 are synchronized and rotated in the same circumferential direction, so that the setup change operation can be automated.

Each screw 18 has a nut portion 12 of a telescopic portion 122 of each lifting device 12 arranged along the axial direction.
2a are screwed together, and the expansion and contraction portions 1 of all the lifting devices 12 are rotated by the synchronized rotation of the screws 18 in the same circumferential direction.
22 is adapted to be able to expand and contract to the same extent in synchronization.

The size of the FW of the FW molding apparatus shown in FIG. 1 is changed as follows. Rotation of mandrel 11 by motor 15 in circumferential direction and drive roll 116
Mandrel 1 driven by motor 15 by
1 while rotating the steel belt 14 in the circumferential direction and rotating the steel belt 14 in the circumferential direction and moving in the axial direction at a low speed, the telescopic portion 122 of the elevating device 12 is gradually expanded and contracted, and the belt length and the tension associated therewith are gradually increased. Then, the molding die 17 is finally expanded / contracted to the size of the caliber.

At this time, by the synchronized rotation of the screws 18 in the same circumferential direction, the expansion / contraction parts 1 of all the lifting devices 12 are moved.
When 22 is synchronized and expanded and contracted to the same extent, the setup change operation can be automated.

Then, a cylindrical molding die 17 having a product diameter size is formed from a steel belt 14 which is movable in the axial direction while rotating in the circumferential direction on the mandrel 11, and a molding material is formed around it. The inner and outer surfaces of the resin concrete layer are wound and provided with inner and outer surface layers made of fiber reinforced resin, and these are integrally cured to form a FRPM having a desired product aperture size.

FIG. 2 is an explanatory view showing another example of the FW molding apparatus of the present invention. Reference numeral 2 denotes an FW forming device, in which a lifting device 22 composed of a plurality of link mechanisms for supporting a steel belt (strip) 24 is arranged on a cylindrical mandrel 21 along the circumferential direction and the axial direction. ing. In the elevating device 22, a roller beam 23 is provided through a link part 222 to a support column 221 extending into the mandrel 21 so as to be inserted into an elongated hole provided in the mandrel 21 along the axial direction.
Are arranged.

A screw 27 is laid in the mandrel 21 along the axial direction, and the screw 27 can be rotated in the circumferential direction by a motor 25.

The screw 27 is screwed with a female screw portion 221a provided at a substantially central portion of the column 221 of each lifting device 22 arranged along the axial direction.
Due to the rotation of 7 in the circumferential direction, the support 221 is moved to the mandrel 21
The link portion 222 can be expanded and contracted by moving in the elongated hole provided in the axial direction.

Since the other structure is the same as that shown in FIG. 1, detailed description thereof will be omitted by attaching the corresponding drawing to FIG.

[0026]

Since the FW molding apparatus of the present invention 1 is configured as described above, it is possible to easily and quickly perform the setup change work when changing the size of the FRPM to be produced. You can

The FW molding apparatus of the present invention 1 is further configured as described above, so that the setup change operation can be automated.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an example of an FW molding apparatus of the present invention, (a) is a partial sectional view showing the entire structure, and (b) is
[Fig. 3] is a front view showing the main part of (a), and (c) is a sectional view taken along the line AA in (a).

FIG. 2 shows a main part of another example of the FW molding apparatus of the present invention,
It is sectional drawing.

3A and 3B are explanatory views showing an example of a conventional example, in which FIG. 3A is a partial cross-sectional view showing the entire structure thereof, and FIG. 3B is a main part of FIG. The front view shown in FIG. 3C is a sectional view taken along line BB in FIG.

[Explanation of symbols]

 11,21 Mandrel 12,22 Lifting device 14,24 Steel belt (belt) 17 Mold

Claims (2)

[Claims] 1. A filament winding molding apparatus having a cylindrical molding die formed of a belt-shaped body that is movable in the axial direction while rotating in the circumferential direction on the mandrel. A plurality of lifting devices for supporting the belt-shaped body are arranged, and the molding die can be freely expanded and contracted by raising and lowering the lifting devices to change the size of the filament. Winding molding equipment. 2. The filament winding molding apparatus according to claim 1, wherein the molding die is capable of expanding and contracting diameters by the synchronized lifting of all the lifting devices.