JP3119887B2 - Filament winding molding machine head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head of a filament winding forming apparatus for winding a pre-preg roving around a mandrel in a predetermined interval when, for example, manufacturing a cylindrical molded part.

[0002]

2. Description of the Related Art As a head of a filament winding forming apparatus of this kind, as shown in FIG. 15, a plurality of round bars 2, 2... And a base end of the head body 1 is pivotally connected to a shaft 4 provided at an appropriate portion of a filament winding forming apparatus (not shown), and the comb tooth-shaped portion 3 of the head is traversed by the tension of the filament 5 during winding. Japanese Patent Application Publication No. Sho 6 (1994) discloses a structure in which the filament 5 guided from the head is wound around the mandrel 6 in a direction suitable for the moving direction.
No. 2,191,563.

[0003]

In the head of the filament winding molding apparatus of the above type, when the filament is wound along the mandrel, that is, while the non-turned portion is wound, a moment about the axis due to the tension of the filament is applied to the head body. Ma is generated, but the moment Ma applied to the head main body acts to prevent the moment Mb generated when the head main body is folded at the end of the mandrel, and therefore, the right and left rotation about the axis of the head main body is performed. The movement is an irregular movement, which results in the pre-pre-grooving being wrapped around the mandrel irregularly, reducing the quality of the molded part.

The present invention has been made in view of the above points, and prevents the generation of a moment Ma which causes a shift of pre-pre-grooving at an intermediate portion of a mandrel when wound along a mandrel, and prevents the head from rotating left and right. An object of the present invention is to provide a head of a filament winding molding apparatus which can regularly wind a pre-pre-grooving by making it regular, and improve the quality of a molded part.

[0005]

SUMMARY OF THE INVENTION A head of a filament winding molding apparatus according to the present invention is provided with an alignment member having a plurality of pins erected to align prepreg groves at a predetermined interval, and a direction for changing the direction of the aligned prepreg groves. It has a guide roller and a guide device provided with a pair of upper and lower rollers and supported rotatably in a horizontal plane, and the rotation axis of the guide device is positioned on a perpendicular extending tangentially from the guide roller. Is done.

[0006]

In the head of the filament winding molding apparatus according to the present invention, the pre-pre-grooving unreeled from the bobbin of the creel stand is aligned when passing through an alignment member having a plurality of pins erected, and the running direction is changed by a guide roller that follows. The guide is guided to a guide device rotatably supported in a horizontal plane, and is wound around the mandrel from here. However, since the rotation axis of the guide device is located on a vertical line extending tangentially from the guide roller, the mandrel is intermediately formed by pre-pre-grooving. During the winding of the part, no moment is generated in the guide device, and when turning back at the end of the mandrel, the friction between the pre-pre-gloving and the rollers of the guide device causes the pre-pre-groving to change according to the change in the winding angle of the mandrel. The frictional force acts on the rollers of the guide device, which causes the guide device to move horizontally. Smoothly rotated in left and right inner prepreg roving is wound regularly onto the mandrel down Dorell.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 5 shows a filament winding processing apparatus incorporating a filament winding molding apparatus equipped with a head according to the present invention. A plurality of pre-pre-grooves 12 fed from a bobbin 11 of a creel stand 10 are transferred to a carriage 14 via an equalizer 13. It is guided and wound around the mandrel 6 by the head 15 (FIG. 1) of the filament winding forming device 14 attached to the carriage 14. The head 15 shown in FIG.
As shown in FIG. 2, an alignment member 17 having a plurality of pins 16 for aligning the pre-pre-grooving 12 at predetermined intervals, and a pair of guide rollers 18 for changing the direction of the aligned pre-pre-groving 12 are provided. , A guide device 20 having a pair of upper and lower rollers 19, 19. The guide device 20 is rotatably supported in a horizontal plane by a support portion 21 provided on the molding device 14 via a bearing 22. The rotation center O of the guide device 20 in the horizontal plane is located on a perpendicular line g extending tangentially downward from the outer surface of the guide roller 18 at the nip point of the guide rollers 18,18. In FIG. 1 and FIG. 2, the number of the pins 16 erected on the alignment member 17 is five in order to align the four pre-preg rovings 12a, 12b, 12c, and 12d. The number of the pins 16 is variable as required.

In FIG. 1, reference numeral 23 denotes an alignment member 17.
Is a feed roller provided on the upstream side of. Next, the operation will be described.

The four bobbins 11 of the creel stand 10
Pre-grooving 12a, 12
b, 12c, 12d are sent to an alignment member 17 having a plurality of pins 16 erected through a feed roller 23, and are aligned when passing between the pins 16, and the aligned prepreg globbing 12a is a guide roller that follows. The running direction is changed downward by 18, 18 and guided to a pair of upper and lower rollers 19, 19 of a guide device 20, from which the prepreg globbing 12 is wound around the mandrel 6 in the form of an aligned tape with no gap. The device 20 has a rotation center O
, And the rotation center O is located on a perpendicular line g that extends tangentially downward from the outer surface of the guide roller 18. As shown in FIG. 3, while the prepreg globbing 12 guided to 19 is wound around the intermediate portion of the mandrel 6, the traveling direction of the prepreg globbing 12 and the rotation center O of the guide device 20 are located on a line, As shown in FIG. 4, when the mandrel is folded back at the end of the mandrel, the friction between the pre-prepared globbing 12 and the roller 19 of the guide device 20 causes the mandrel of the pre-prepared globbing not to act on the guide device 20. The winding angle of the guide device 20 changes with the change of the winding angle.
9, a frictional force Fs acts on the guide device 9, and a moment about the rotation center O acts on the guide device 20, so that the guide device 20 smoothly rotates left and right in a horizontal plane.

If the guide roller 18 and the roller 19 of the guide device 20 are rollers 31 provided with fine grooves 30 on the outer peripheral surface as shown in FIGS. 6 and 7, it is possible to prevent the lateral displacement of the prepreg globbing passing therethrough. In addition, as shown in FIG. 8, if the roller 33 is provided with a groove 32 corresponding to the width of the prepreg globbing on the outer peripheral surface, the prepreg globbing that passes therethrough can be sorted and sent, and the overlap of the prepreg globbing can be prevented. In the roller 33, when the gap between the grooves is W1 and the gap amount of the prepreg globbing which is allowed is W2, if the interval W1 is set so that W1 ≦ W2, the overlap of the prepreg globbing can be prevented and the gap can be prevented. It can be made smaller and the internal quality of the molded part is improved.

As shown in FIGS. 11 to 14, the diameter of the pins 16 of the alignment member 17 is d, and the distance between the pins 16 is W.
p, where W is the width of the pre-pregloving, W =
By setting the pins 16 upright on the alignment member 17 so as to satisfy the relational expression of d + Wp, the gap of the pre-pre-grooving can be made zero. That is, the pre-pre-grooving 12a, 12b, 1
As shown in FIG. 12, 2c and 12d are sent to an alignment member 17 having a plurality of pins 16 erected at a distance from each other, and when passing through the pins 16 arranged to satisfy the above relational expression, FIG. As shown in FIG. 14, the pre-pre-grooves 12a, 12b, 12c and 12d passing between the pins 16 as shown in FIG. 14 are aligned so that the gap becomes zero.

If one of the paired rollers is a roller having a smooth surface, the above effect can be more effectively obtained. That is, if one of the paired rollers is a roller having a smooth surface and the other roller is provided with a fine groove on the outer peripheral surface, a certain pressure is applied to the prepreg globbing without pushing and spreading the prepreg globbing passing therethrough. 9 and 10 show another embodiment of the present invention,
In this embodiment, a pair of guide rollers 18a, 18
b, a groove corresponding to the width of the pre-pre-grooving is formed on the outer peripheral surface of one of the guide rollers 18a with a narrow gap between the grooves, and the pre-pre-grooving 12a, 12b, 12
Each of c and 12d has a tape shape without a gap, and has a pair of upper and lower rollers 34, 34 downstream of the pair of upper and lower rollers 19, 19 of the guide device 20. Roller 1
Providing a pair of rollers 34, 34 downstream of 9, 19 increases the distance between the roller 34 and the perpendicular g, and can increase the rotational moment of the guide device 20. By selecting this distance, an appropriate rotational moment can be obtained.

[0014]

As described above, according to the present invention, the moment acting on the head at the intermediate portion of the mandrel when the pre-preglobing is wound along the mandrel is prevented, and the head is turned right and left when folded. Is made regular, and the pre-pre-grooving wound around the mandrel is made regular, whereby the effect of improving the quality of the molded part is achieved.

[Brief description of the drawings]

FIG. 1 is a side view of a filament winding forming apparatus provided with a head according to the present invention.

FIG. 2 is a plan view of a filament winding molding apparatus including the head.

FIG. 3 is a diagram showing a prepreg globbing wound state of an intermediate portion of a mandrel of a head according to the present invention.

FIG. 4 is a diagram showing a pre-preglowing winding state of a mandrel end of a head according to the present invention.

FIG. 5 is a perspective view of a filament winding processing apparatus.

FIG. 6 is a diagram illustrating an example of a guide roller.

FIG. 7 is an enlarged view of an e portion of the guide roller of FIG. 6;

FIG. 8 is a diagram showing another example of the guide roller.

FIG. 9 is a view showing another embodiment of a filament winding molding apparatus provided with a head according to the present invention.

FIG. 10 is a plan view of the embodiment.

FIG. 11 is a diagram showing a state of prepreg globbing passing through an alignment member having a plurality of pins erected.

FIG. 12 is a sectional view taken along the line AA of FIG. 11;

FIG. 13 is a sectional view taken along the line BB of FIG. 11;

FIG. 14 is a sectional view taken along the line CC of FIG. 11;

FIG. 15 is a diagram showing a pre-globbing wound state of a mandrel of a conventional head.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Prepre-grooving 16 Pin 17 Alignment member 18 Guide roller 19 A pair of upper and lower rollers 20 Guide device O Rotation axis g of guide device g Perpendicular line

Claims (1)

(57) [Claims] 1. A head of a filament winding forming apparatus in which a plurality of pre-pre-grooves are aligned at a predetermined interval and wound around a mandrel in a predetermined pattern, the head comprises a plurality of pins for aligning the pre-pre-gloving at a predetermined interval. A guide member for changing the direction of the aligned pre-pre-grooving, and a guide device provided with a pair of upper and lower rollers and rotatably supported in a horizontal plane. A head for a filament winding forming apparatus, wherein a dynamic axis is located on a perpendicular line extending tangentially from the guide roller.