JPH06143439A - Filament winding device - Google Patents

Abstract

PURPOSE:To enable the device to wind a wire rod round a mandrel by supporting the mandrel on both sides, which can perform winding-up around a pole without hindering selection properties of a winding-up pattern. CONSTITUTION:To make a filament winding device capable of performing a rotation centering around a central axis of a mandrel, a rotation centering around an axis meeting at right angles with the central axis and a tilting movement of a lateral direction and adjusting a sending out position of a wire rod 1 in a vertical, lateral, longitudinalnal and rotary directions. Therefore, the wire rod 1 can be wound up around the whole circumference of the mandrel at various winding-up pattern by adjustment in cooperation with actions each and the mandrel is supported stably on both sides, rocking of the mandrel is prevented and winding-up precision is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to carbon fiber,
Reinforcement fiber such as glass fiber, wire material in which this reinforcement fiber is impregnated with thermosetting resin or thermoplastic resin (generally called "roving"), and further reinforcement fiber is impregnated with thermosetting or thermoplastic resin to form a film. A wire rod (generally referred to as "prepreg") that has been shredded into fibrous sheets is wound around a mandrel, and is a large-sized, lightweight, high-strength structure,
For example, the present invention relates to a filament winding device for molding a molded product such as a cylindrical fuel tank or gas container.

[0002]

2. Description of the Related Art Conventionally, as a filament winding device, when a wire rod is fed out while a feed eye is moved in the direction of the mandrel's central axis with respect to a mandrel rotating about its central axis, the rotation angle of the mandrel and the amount of movement of the feed eye. It is known that the encoder can be detected by an encoder so that the movements of the two can be controlled, and the winding locus and the winding amount can be accurately controlled (Japanese Patent Laid-Open No. Sho 61-61).
-55073).

By the way, as a method of winding the wire rod by the filament winding device, there is a hoop winding for winding the wire rod in a direction substantially orthogonal to the central axis of the mandrel.
There is polar winding in which the wire is wound substantially along the central axis of the mandrel.

A typical method of winding a wire rod is hoop winding, but a molded product formed by winding the wire rod shows a very high strength in the winding direction of the wire rod, but a direction orthogonal to the winding direction of the wire rod. Has an unexpectedly weak characteristic. Particularly for large fuel tanks and gas containers, high strength is required not only in the circumferential direction but also in the central axis direction, so it is necessary to perform polar winding.

The above-mentioned conventional filament winding apparatus can efficiently wind the hoop winding with high accuracy, but when performing the polar winding, it is necessary to stop the winding once and hook the wire on the end face of the mandrel. In addition to the decrease in productivity, there is a problem that the winding pattern and the shape of the mandrel are limited.

On the other hand, as a filament winding device capable of performing polar winding on a relatively small mandrel, a device as shown in FIG. 2 has been partially put into practical use.

The apparatus shown in FIG. 2 has a mandrel 101.
Is cantilevered by a support arm 103 that is provided inclining with respect to the wire rod 102 in advance and is rotated about its central axis, and the support arm 10 is rotated about an axis orthogonal to the wire rod 102.
The mandrel 101 is rotated together with the wire 3, and the wire rod 102 is sent to the mandrel 101 and wound. This is a device for preventing the wire rod 102 from interfering with the support arm 103.

According to the above filament winding apparatus, the wire 102 is wound around the central axis of the mandrel 101 by the rotation about the orthogonal axis, and
The winding pitch is adjusted by the rotation of the mandrel 101 around the central axis. Further, the winding pattern can be variously selected by rotating the mandrel 101 around the central axis, rotating around the orthogonal axis, and adjusting the feeding angle of the wire rod 102.

However, in the apparatus shown in FIG. 2, the mandrel 101 is held in a cantilever manner, but it is an obvious reason that the arm on one side interferes with the wire rod 102 when the mandrel 101 is held at both sides. In principle, the device is cantilevered.

[0010]

In the conventional filament winding apparatus described above, the mandrel is cantilevered, so that when a large molded product is molded, the mandrel is swayed and the winding accuracy is increased. There is a problem that it is easy to decrease. If the winding accuracy decreases and the winding position and the winding thickness vary, the expected strength may not be obtained.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a filament winding apparatus in which a mandrel is supported on both sides without impeding the selectivity of a winding pattern.

[0012]

Means for solving the problems will be described with reference to FIG. 1 according to the present invention.
A mandrel device C that supports both sides of the mandrel 2 so as to be rotatable about its central axis, and that is capable of rotating the mandrel 2 about an axis orthogonal to the central axis of the mandrel 2 and is tiltable in the front-rear direction, and , A wire rod supply device A having a feed eye 6 for feeding the wire rod 1 to the mandrel 2, which is provided at the tip of a feed arm 7 capable of position adjustment in the left-right and up-down directions and rotation about a central axis. It is used as a winding device.

In the present invention, the front-rear direction means the facing direction of the mandrel device and the wire rod feeding device, and the left-right direction means the plane direction orthogonal to the front-rear direction.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG.

In the figure, A is a wire feeding device, B is a traverser device, C is a mandrel device, D is a mandrel tilt drive device, the wire rod feeding device A is installed on a traverser device B, and the mandrel device C is a mandrel. Tilt drive device D
Supported above.

First, the wire feeding device A will be described.

The wire rod feeder A is a wire rod 1 to which a proper tension is applied by a tension controller (not shown).
To a mandrel 2 of a mandrel device C, which will be described later, and a resin bath 4 placed on a front-rear moving pedestal 3 and extending from the vertically moving pedestal 5 in the direction of the mandrel device C, and having a feed eye 6 at the tip. It is composed of the feed arm 7 and the like.

A ball screw 8a provided in the front-rear direction is screwed into the lower part of the front-rear moving mount 3. A front-rear drive motor 11a provided on a left-right moving base 10 of a traverser device B, which will be described later, is connected to one end (on the side opposite to the mandrel device C) of the ball screw 8a. The front-rear moving mount 3 is also provided on the linear guide 12a provided on the left-right moving mount 10. When the front-rear drive motor 11a operates and the ball screw 8a rotates, the front-rear moving mount 3 moves back and forth along the linear guide 12a. It is supposed to move forward and backward.

A resin bath 4 is mounted on the upper part of the front-rear moving mount 3. The resin bath 4 is a liquid in which a thermosetting resin liquid such as an epoxy resin or a polyester resin is stored, and the wire rod 1 to be supplied is guided to the inside by a guide roll 9 and dipped therein to be impregnated. A pair of squeeze rolls 13 are provided on the outlet side of the wire rod 1, and by being sandwiched between the squeeze rolls 13, excess thermosetting resin is squeezed from the wire rod 1.

The wire 1 wound around the mandrel 2 according to the present invention
May be any of reinforced fiber, fibrous rubber, roving and prepreg. Especially when molding a composite of thermosetting resin and carbon fiber, glass fiber or aramid fiber roving, thermosetting immediately before winding. The resin bath 4 is preferably provided in order to impregnate the resin.

On the other hand, when the reinforcing fiber or the fibrous rubber material is wound around the mandrel 2 as it is, or when the roving or prepreg impregnated with the thermoplastic resin is wound around the mandrel 2, the resin bath 4 is not necessary. In particular, when roving or prepreg impregnated with a thermoplastic resin is wound around a mandrel, it is preferable to provide a heat source for softening and melting the impregnated thermoplastic resin of the wire 1, for example, an infrared lamp, instead of the resin bath 4.

The linear guide 12b provided on the front surface side (the mandrel device C side) of the front-rear moving mount 3 is fitted with the leg portion of the vertical moving mount 5. A ball screw 8b is screwed in the vertical direction on the back side of the vertically movable gantry 5, and a vertical drive motor 11b provided on the vertically movable gantry 3 is connected to the lower end thereof via a timing belt 14a. ing. Therefore, when the ball screw 8b is rotated via the timing belt 14a by the operation of the vertical drive motor 11b, the vertical movement pedestal 5 causes the linear guide 1 to move.
It is moved up and down along 2b.

A rear end of a feed arm 7 for guiding the wire 1 to the mandrel 2 is attached to the vertically movable gantry 5 so as to be rotatable about its central axis. The tip of this feed arm 7 extends to the vicinity of the mandrel 2, and a feed eye 6 for feeding the wire 1 to the mandrel 2 is provided there.

A timing belt 14b is stretched between the rotary drive motor 11c provided on the vertically movable mount 5 and the feed arm 7, and the feed arm 7 is operated via the timing belt 14b by the operation of the rotary drive motor 11c. Is to be rotated around its central axis. By this rotation, the feed eye 6 at the tip of the feed arm 7 is circularly moved.

The tip of the feed arm 7 is adapted to make the circular movement of the feed eye 6 into a circular movement having an appropriate diameter, and to position the feed eye 6 as close to the center axis of the mandrel 2 as possible. In order to do so, it is bent into an L-shape as shown.

The traverser device B mounts and supports the above-mentioned wire rod supplying device A, and is provided by a left-right moving mount 10 which is movable in the left-right direction along a rail 16 installed on a base 15a. It is configured.

A ball screw 8c, which is provided in the left-right direction, is screwed into the lower portion of the left-right moving base 10. The ball screw 8c is rotated via the timing belt 14c by the operation of the left-right drive motor 11d provided on the base 15a, whereby the left-right moving mount 10 is moved in the left-right direction along the rail 16. is there.

As described above, the left-right movable gantry 10 can move in the left-right direction, the front-rear movable gantry 3 provided thereon can move in the front-rear direction, and the vertically movable gantry 5 provided thereon can move in the vertical direction. Can be moved to. Therefore, the feed arm 7 attached to the vertically movable pedestal 5 can move left and right, front and rear, and up and down. Moreover, since the feed arm 7 is rotatable about its axis, the feed arm 7
The feed eye 6 provided at the tip of the wire can rotate in the left-right, front-rear, and up-down directions, and at the same time, can rotate about the central axis of the feed arm 7 to adjust the feeding position of the wire rod 1 in various ways. .

On the other hand, the mandrel device C includes the mandrel 2
Is composed of a mounting arm 17 for supporting both ends in a state capable of rotating about a central axis (hereinafter referred to as "rotation"), and a drive box 18 having a built-in drive mechanism.

The mandrel 2 is usually made of an alloy such as aluminum, and the wire 1 wound around this
And a molded product.

The mandrel 2 is attached to the mounting arm 17,
A rotation shaft 19 and a scroll chuck 20 for supporting both ends in a rotatable manner are provided. Mandrel 2
A hole for inserting the rotation shaft 19 is formed, but this hole is to be closed afterwards by embedding an appropriate jig or the like after the completion of molding.

The mounting arm 17 is supported by the drive box 18 in a state in which it can rotate about an axis orthogonal to the central axis of the mandrel 2 (hereinafter referred to as "revolution"). That is, the mounting arm 17 is supported by the drive box 18 via the revolution shaft 21 provided in the central portion of the mandrel 2 in the central axis direction in the direction orthogonal to the central axis of the mandrel 2, and the revolution shaft 21. Is connected to the revolution drive motor 11e via a timing belt 14d. Therefore, the mounting arm 17 is attached to the revolution drive motor 11
By the operation of e, through the timing belt 14d,
The mandrel 2 is revolved around.

On the other hand, from the inside of the revolution shaft 21 to the mounting arm 17
The rotation drive shaft 2 with a bevel gear 22 interposed along the lower part of the
3 is provided, one end of the rotation drive shaft 23 is connected to the rotation shaft 19 via the timing belt 14e, and the other end is connected to the rotation drive motor 1 via the timing belt 14f.
It is connected to 1f. Therefore, the rotation drive motor 11f
Is operated, the rotation shaft 19 is rotated through the timing belt 14f, the rotation drive shaft 23, and the timing belt 14e, and the mandrel 2 is rotated.

The mandrel device C is provided on the base 15b of the mandrel drive device D via a tilting shaft 24 so as to be tiltable in the front-rear direction. It is preferable that this tilt can be performed up to about 30 degrees with respect to the vertical direction. Further, a tilting drive motor 11g is provided on the base 15b,
A timing belt (or sprocket chain) 11g is stretched between the tilt drive motor 11g and the tilt shaft 24. Therefore, the mandrel device C is tilted in the front-rear direction by the operation of the tilt drive motor 11g.

As described above, the mandrel 2 is capable of rotating on its own axis, revolving with the mounting arm 17, and tiltable in the front-rear direction via the tilting shaft 24. In addition, as described above, the feed eye 6 that feeds out the wire rod 1 is not only movable in the vertical direction, the horizontal direction, and the front-back direction, but is also rotatable about the central axis of the feed arm 7 and various positions can be adjusted. . Therefore, even if the mandrel 2 is supported by the mounting arm 17 on both sides, by synchronizing the movement of the supply side of the wire 1 and the movement of the side of the mandrel 2 with each other, various windings can be carried out without interference of the supporting portion of the mandrel 2. Not only the polar winding of the pattern but also simple hoop winding is possible.

The molded product, which has been wound, is heated to a predetermined temperature when the scroll chuck 20 is removed and the wire rod 1 impregnated with a thermosetting resin is wound, for example, when the wire rod 1 impregnated with a thermosetting resin is wound. And heat it for a predetermined time,
The thermosetting resin is cured to obtain the final molded product.

Each of the drive motors 11a to 11g described above is connected to a central control unit (not shown) such as a computer, and operates in conjunction with the instruction contents set in the central control unit. ing. In this case, various patterns can be wound by changing the setting contents in the central controller.

In this embodiment, the mandrel 2 has been described as a cylindrical shape, but the shape of the mandrel 2 is not particularly limited, and may be, for example, a spherical shape or a simple rod-shaped mandrel 2.

In this embodiment, the mandrel 2 is made of an alloy such as aluminum, and the mandrel 2 is embedded in the wire 1 to form a molded product. However, the material of the mandrel 2 is not particularly limited, and for example, the mandrel 2 is made of gypsum, and after the winding of the wire rod 1 is completed, the mandrel 2 is crushed and removed to remove only the wound wire rod 1. It is also possible to obtain a hollow molded article.

[0040]

The present invention is as described above and has the following effects.

(1) Since the mandrel 2 is supported on both sides, the mandrel 2 can be stably supported even when the wire 1 is wound around a large mandrel, and the mandrel 2 is less likely to sway. The winding accuracy of is obtained. Further, for the same reason, high speed operation can be performed, so that productivity is improved.

(2) The position of the feed eye 6 can be freely adjusted, and the rotation, revolution and tilting of the mandrel 2 can be controlled respectively, so that the polar winding is easy and various windings around the mandrel 2 are possible. The wire rod 1 can be wound in the attachment pattern.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

A wire rod supply device B traverser device C mandrel device D mandrel drive device 1 wire rod 2 mandrel 3 front-rear moving mount 4 resin bath 5 vertical moving mount 6 feed eye 7 feed arm 8a-8c ball screw 9 guide roll 10 left and right moving mount 11a front-rear drive motor 11b Vertical drive motor 11c Rotation drive motor 11d Horizontal drive motor 11e Revolution drive motor 11f Rotation drive motor 11g Tilt drive motor 12a, 12b Linear guide 13 Squeeze roll 14a-14g Timing belt (or sprocket chain) 15a, 15b Base 16 Rail 17 Mounting Arm 18 Drive box 19 Rotation shaft 20 Scroll chuck 21 Revolution shaft 22 Bevel gear 23 Rotation drive shaft 24 Tilting shaft

Claims (1)

[Claims] 1. A mandrel device which is supported on both sides of a mandrel so as to be rotatable about its central axis, and which is supported so as to be rotatable about an axis orthogonal to the central axis of the mandrel and tiltable in the front-rear direction. A filament rod, which is provided at the tip of a feed arm that can move in the front-back, left-right, and vertical directions and can rotate around a central axis, and has a wire rod feeding device having a feed eye that feeds out a rod rod to a mandrel. Winding equipment.