JP6756275B2 - Filament winding device - Google Patents

Description

The present invention relates to a filament winding device that winds a fiber bundle around the surface of a member to be wound.

In recent years, vehicles driven by the combustion energy of fuel gas and the electric energy generated by the electrochemical reaction of fuel gas have been developed. These vehicles are equipped with a high-pressure gas tank filled with fuel gas such as natural gas and hydrogen, and the surface of the cylindrical tank body of the high-pressure gas tank is reinforced with fibers in order to reduce weight and improve strength. It has a composite structure covered with a resin layer.

As a method for manufacturing a high-pressure gas tank having such a composite structure, a filament winding method (FW method) in which a fiber bundle impregnated with a thermosetting resin such as an epoxy resin is repeatedly wound around the surface of the tank body while rotating the tank body. Is widely adopted. Along with this, research and development of a filament winding device suitable for the FW method has been actively carried out. For example, the FW device described in Patent Document 1 below has a converging portion for converging these fibers into one bundle by passing a plurality of fibers through the Ikuchi, which is a fiber yarn feeder, and the converging portion is a linear motor. It reciprocates along the axial direction of the tank body by a mechanism such as, and controls repeated winding around the tank body.

Japanese Unexamined Patent Publication No. 2015-21408

However, when a structure that converts the rotary motion of the motor into the linear motion of the dagger like a linear motor is adopted, it is necessary to install the linear motor under the dagger, so the inertial force becomes large and the controllability of repeated winding is improved. There was a problem that got worse. In order to solve this problem, it is desired to move the dagger in the axial direction of the tank body by using a wire drive. However, in the case of wire drive, since the wire is stretched at a place where the load is high during acceleration and deceleration, the position accuracy of the dagger is affected, and a new problem arises in which it becomes difficult to wind the fiber bundle with high accuracy.

The present invention has been made to solve such a technical problem, and to provide a filament winding apparatus capable of improving the controllability of fiber bundle winding and winding the fiber bundle with high accuracy. The purpose.

The filament winding device according to the present invention is a filament winding device that winds a fiber bundle around the surface of the wound member while rotating the wound member, and includes an eyepiece that sends the fiber bundle to the wound member. The wire is formed by winding a plurality of wires between a plurality of rollers provided in the axial direction of the wound member, and the wire row supporting the dagger and each wire of the wire row are reciprocated to travel. It is characterized by including a wire drive unit for advancing and retreating the dagger in the axial direction of the wound member, and a tension applying member for applying tension to each wire in the wire row.

According to the filament winding apparatus of the present invention, the wire drive unit is used to reciprocate each wire in the wire row to advance and retreat the dagger in the axial direction of the wound member. The controllability of bundle winding can be improved. In addition, since the wire row is formed by winding a plurality of wires between the plurality of rollers, the rigidity of the wires can be increased. Further, since the tension applying member for applying tension to each wire in the wire row is provided, the elongation of the wire can be suppressed, and the fiber bundle can be wound around the surface of the wound member with high accuracy.

According to the present invention, the controllability of fiber bundle winding can be improved, and the fiber bundle can be wound with high accuracy.

It is the schematic which shows the structure of the filament winding apparatus which concerns on embodiment.

Hereinafter, embodiments of the filament winding apparatus according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing the configuration of the filament winding apparatus according to the embodiment, and shows a state in which the high-pressure gas tank is removed in order to make the internal structure easier to understand. The filament winding device 1 of the present embodiment is used for winding a fiber bundle around the surface of a high-pressure gas tank (wound member) 2.

The high-pressure gas tank 2 is, for example, a container made of resin, and has a substantially cylindrical cylinder portion 2a having a uniform radius and convex curved dome portions 2b provided at both ends of the cylinder portion 2a. The high-pressure gas tank 2 is mounted on the filament winding device 1 via mounting shafts 15L and 15R attached to both ends so that its axial direction coincides with the left-right direction shown in FIG. In the following, in order to avoid complication of explanation, the axial direction of the high-pressure gas tank 2 is referred to as a left-right direction.

The filament winding device 1 mainly supports a high-pressure gas tank 2 and rotates a tank rotating portion 10 around the axis of the high-pressure gas tank 2, and a fiber bundle supply section 20 for supplying a fiber bundle to the high-pressure gas tank 2. A wire drive unit 30 for advancing and retreating the eyepiece 22 of the fiber bundle supply unit 20 in the left-right direction, and a control unit (not shown) for controlling the entire device are provided.

The structure of the tank rotating portion 10 is symmetrical in order to rotate the high-pressure gas tank 2 while pivotally supporting it on both the left and right sides. In the following description, each configuration on the left side is indicated by L, and each configuration on the right side is indicated by R. As shown in FIG. 1, the tank rotating portions 10L and 10R are attached to the bases 11L and 11R, the shaft support blocks 12L and 12R arranged above the bases 11L and 11R, and the shaft support blocks 12L and 12R. The drive motors 13L and 13R are provided.

Linear guides 14L and 14R are fixed on the upper surfaces of the bases 11L and 11R. The shaft support blocks 12L and 12R are mounted on the bases 11L and 11R via the linear guides 14L and 14R, and are formed so as to be slidable in the left-right direction. By doing so, for example, when installing or removing the high-pressure gas tank 2, if one of the left and right axle support blocks 12L and 12R is retracted, the high-pressure gas tank 2 can be easily installed or removed. it can. Further, the shaft support blocks 12L and 12R are provided with insertion holes into which the above-mentioned mounting shafts 15L and 15R can be inserted.

The drive motors 13L and 13R receive a control signal from the control unit and rotationally drive the high-pressure gas tank 2 mounted on the shaft support blocks 12L and 12R around the shaft.

The fiber bundle supply unit 20 includes a first guide rail 21 extending in the left-right direction, an eyekuchi 22 that sends out a fiber bundle toward the high-pressure gas tank 2, a movable table 23 on which the eyekuchi 22 is placed, and a first guide rail 21 and a movable table. It is provided with a connecting plate 24 for connecting to the 23.

Specifically, the first guide rail 21 is installed at a distance from the second guide rail 25 erected between the tank rotating portions 10L and 10R on the left and right sides. The movable table 23 on which the dagger 22 is placed is slidably provided on the second guide rail 25. On the other hand, one end (rear end in FIG. 1) of the connecting plate 24 is slidably attached to the first guide rail 21 so as to bridge between the first guide rail 21 and the movable table 23. The end portion (front end portion in FIG. 1) is connected to the movable table 23.

The fiber bundle supply unit 20 further includes a fiber bundle winding roller (not shown), a drive motor for rotationally driving the fiber bundle winding roller, and the like. Examples of the fiber bundle include a curable resin-impregnated carbon fiber bundle and a glass fiber bundle. The drive motor receives a control signal from the control unit to rotate the fiber bundle winding roller so as to send out the fiber bundle from the fiber bundle winding roller.

The second guide rail 25 extends in the left-right direction, and is composed of two rails 25A and 25B having the same height and length. The rails 25A and 25B are arranged in parallel at predetermined intervals, and are fixed to the shaft support blocks 12L and 12R via, for example, mounting brackets.

As shown in FIG. 1, a first groove roller 26 and a second groove roller 27 each provided with a plurality of grooves are installed at both ends of the second guide rail 25 in the longitudinal direction (that is, the left-right direction). .. The first groove roller 26 is rotatably attached to the tank rotating portion 10L via a mounting bracket or the like, and the second groove roller 27 is rotatably attached to the tank rotating portion 10R via a mounting bracket member or the like.

A wire row 28 formed by winding a plurality of wires is stretched between the first groove roller 26 and the second groove roller 27. In the present embodiment, the wire row 28 is a reciprocating three-thread hook between the first groove roller 26 and the second groove roller 27. Each wire of the wire row 28 is made of, for example, a highly rigid metal material.

In a plan view, the first groove roller 26 and the second groove roller 27 are arranged so as to be sandwiched between the rail 25A and the rail 25B, respectively. Therefore, the three wires of the wire row 28 stretched between the first groove roller 26 and the second groove roller 27 are arranged in parallel between the rails 25A and 25B at predetermined intervals. ing. The bottom of the movable table 23 is fixed to the wire row 28, and the movable table 23 moves forward and backward while being guided by the second guide rail 25 as the wire row 28 reciprocates.

The wire drive unit 30 is arranged between the left and right tank rotating portions 10L and 10R and below the second guide rail 25. The wire drive unit 30 rotationally drives a flat plate-shaped bottom plate 31, a mounting base 32 slidably provided on the bottom plate 31, a wire winding roller 33 mounted on the mounting base 32, and a wire winding roller 33. It has a drive motor 34 for driving.

The bottom plate 31 is arranged so that its longitudinal direction coincides with the front-rear direction (that is, the direction orthogonal to the axial direction of the high-pressure gas tank 2). The bottom plate 31 is provided with two guide grooves 31a for guiding the movement of the wheels installed at the bottom of the mounting base 32.

The mounting base 32 has a flat plate-shaped underframe 32a provided with wheels at the bottom, a front mounting plate 32b erected from both front and rear ends of the underframe 32a, and a rear mounting plate 32c. The mounting base 32 can move forward and backward in the front-rear direction via the wheels provided in the underframe 32a and the guide grooves 31a provided in the bottom plate 31. The forward position of the mounting base 32 is limited by the stopper member 35 provided on the bottom plate 31.

The wire take-up roller 33 is pivotally supported by the front mounting plate 32b and the rear mounting plate 32c, and can be rotated forward or reverse by being driven by the drive motor 34. A third groove roller 36 and a fourth groove roller 37 for guiding the position of each wire are arranged on the left and right sides of the wire take-up roller 33 in order to prevent the wires of the wire row 28 from being entangled. There is.

According to the above configuration, when the wire take-up roller 33 rotates forward or reverse due to the rotation of the drive motor 34, each wire of the wire row 28 reciprocates along the left-right direction. Along with this, the movable table 23 fixed to the wire row 28 moves back and forth in the left-right direction while being guided by the second guide rail 25. As a result, the dagger 22 can send the fiber bundle to the wound member while reciprocating along the axial direction of the high-pressure gas tank 2.

The control unit is mainly composed of a computer including, for example, a CPU, ROM, and RAM, and based on a control program stored in advance, the drive status of the drive motors 13L, 13R, and 34, and the delivery of fiber bundles from the dagger 22. It controls the situation.

In the present embodiment, the filament winding device 1 further includes a tension applying roller (tension applying member) 40 for applying tension to each wire in the wire row 28. The tension applying roller 40 is arranged between, for example, the first groove roller 26 and the second groove roller 27, and is formed so as to press against each wire with the same force from below the wire row 28.

The tension applying roller 40 may be formed so as to constantly press against each wire to apply tension, or has a structure capable of ascending and descending in the vertical direction, and acceleration or deceleration is particularly large in the implementation process of the filament winding method. Only then may it be formed to rise and press against each wire to apply tension.

According to the filament winding device 1 having the above configuration, the wire drive unit 30 is used to reciprocate each wire of the wire row 28 to move the dagger 22 forward and backward in the axial direction of the high pressure gas tank 2. Therefore, the high pressure gas tank The controllability of winding the fiber bundle around 2 can be improved. In addition, since the wire row 28 is formed by winding a plurality of wires between the first groove roller 26 and the second groove roller 27, the rigidity of the wire can be increased. Further, since the tension applying roller 40 for applying tension to each wire in the wire row 28 is provided, the elongation of the wire can be suppressed and the tension of each wire can be adjusted. As a result, the positioning accuracy of the dagger 22 can be improved, and the fiber bundle can be wound around the surface of the high-pressure gas tank 2 with high accuracy.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs are designed without departing from the spirit of the present invention described in the claims. It is something that can be changed. For example, in the above-described embodiment, the wire row is hung with three wires, but it may be hung with two wires or four or more wires.

1 Filament winding device 2 High-pressure gas tank (wound member)
10 Tank rotating part 11L, 11R Base 12L, 12R Shaft support block 13L, 13R Drive motor 14L, 14R Linear guide 15L, 15R Mounting shaft 20 Fiber bundle supply part 21 1st guide rail 22 Ikuchi 23 Movable table 25 2nd guide rail 26 1st groove roller 27 2nd groove roller 28 Wire row 30 Wire drive unit 31 Bottom plate 32 Mounting base 33 Wire take-up roller 40 Tension applying roller (tension applying member)

Claims (1)

A filament winding device that winds a fiber bundle around the surface of the wound member while rotating the wound member.
The dagger that sends the fiber bundle to the wound member,
A wire row formed by winding a plurality of wires between a plurality of rollers provided in the axial direction of the wound member to support the dagger, and
A wire drive unit that advances and retreats the dagger in the axial direction of the wound member by reciprocating each wire in the wire row.
A tension applying member that applies tension to each wire in the wire row,
A filament winding device characterized by comprising.

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