JPS6194742A - Forming device of fiber reinforced plastic - Google Patents

Abstract

PURPOSE:To recognize the revolution of the form to be made from the outside of a vessel before using a device by a method in which the form to be made is kept capably of turning and the member fitting the form to be made is arranged freely accessibly into a pressure vessel and then the second transmission means connected freely to the first transmission means is provided outside of the vessel. CONSTITUTION:The form 1 to be made is caused to be attachably and detachably to or from a frame 18. The member C fitting the form 1 to be made in which the frame 18 is supported on a core shaft 19 is provided freely accessibly into a pressure vessel 2, opening a door 3. The first transmission member D is fitted to the fitting member C and is freely connected to the second transmission means E arranged outside of the vessel 2, and then the transmission means E is driven by a driving means F. A heating and cooling means A and a blowing means Bare provided in the pressure vessel 2. The revolution of the form to be made is recognized at the state where the door 3 of the pressure vessel 2 is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an apparatus for molding fiber-reinforced plastic (FRP), and more particularly to an apparatus for molding FRP by an autoclave method.

Conventional Technology FRP molding equipment using the autoclave method includes a conventional one such as the one described in Japanese Patent Application No. 59-156088. a pressure vessel, a to-be-molded object equipment member provided with a means for rotatably supporting the to-be-molded object and provided to be movable in and out of the container; and a first joint provided on the to-be-molded object equipment member. and a motor provided on the outside of the container, a second joint attached to the drive shaft of the motor so as to be engageable with the first joint, and a hot air blower attached to the container.

The object to be molded has a prepreg formed by impregnating reinforcing fibers with a B-stage thermosetting resin around a mold. Further, at one longitudinal end of the container,
An opening/closing door for taking in and out the molded object equipment member is provided, and the motor is attached to this door. Furthermore, a drive shaft of the motor extends through the door.

When using this apparatus, first, the object to be formed is placed on the object equipment member, placed in a container, and the door is closed. Then,
1st. As the second joint engages.

While the object to be formed is rotated by a motor, hot air is applied to the object by a hot air blower to heat and harden the thermosetting resin. In other words, FRP is molded.

According to this apparatus, since the object to be formed can be heated while being rotated, an FRP with excellent properties can be obtained. In other words, when B-stage thermosetting resin is heated, its viscosity decreases once before curing, making it easier to flow. Therefore, when a molded object is heated in a static layer, the resin sag, resulting in excess resin at the bottom. However, by molding while rotating the molded object, this effect can be eliminated, the resin distribution becomes uniform, and FRP with excellent properties can be obtained.

Problems to be Solved by the Invention However, on the other hand, there are drawbacks as described below. Since the second joint does not engage, it is difficult to check from the outside of the container whether or not the first and second joints are securely engaged and the object to be formed can be rotated reliably. Can not.

An object of the present invention is to solve the above-mentioned drawbacks of the conventional apparatus, and to make it possible to confirm from outside the container that the object to be molded can be reliably rotated before use.

It is an object of the present invention to provide an apparatus that is not only easy to use but also capable of molding FRP with high characteristics.

Means for Solving the Problems In order to achieve the above object, the present invention comprises a pressure vessel for accommodating a to-be-molded object, and means for rotatably supporting the to-be-molded object; a first transmission means provided on the to-be-formed body-equipped member, a driving means provided on the outside of the container and on the side of the container; The present invention is characterized by a fiber-reinforced plastic molding apparatus comprising: a second transmission means provided on the drive means so as to be freely engageable with the first transmission means; and a molded object heating/cooling means attached to the container. It is something.

Example Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, prior to the explanation, the molded object used in the present invention will be explained.

The object to be molded is, for example, carbon fiber or glass fiber.

It is formed by winding a fabric prepreg made by impregnating a B-stage thermosetting resin into a fabric made of high-strength, high-elasticity fibers such as aramid fibers around a mold to be described later.

In addition, instead of the woven prepreg, a unidirectional prepreg of reinforcing fibers may be wound around a formwork in the same manner as the woven prepreg, or a yarn preg made by impregnating the reinforcing fibers with a B-stage thermosetting resin may be used using the filament winding method. It may also be formed by using it and winding it around a mold.

First, the configuration of an embodiment of the present invention will be explained.

As shown in FIGS. 1 and 2, l represents the object to be molded.

2 is a pressure vessel for accommodating the object to be molded, and 3 is an opening/closing field for sealing the container 2.

A is a heating and cooling means that heats and cools the molded object housed in the container 2, and B is a heating gas heated by a heat exchanger (e.g., high-pressure nitrogen gas or high-pressure air) and a cooling gas (e.g., a gas cooled by cooling water). This is a blowing means that circulates high-pressure nitrogen gas or high-pressure air to the molded object l housed in the container 2.

Reference numeral C denotes a molded object equipment member provided with means for rotatably supporting the molded object l and provided so as to be able to move in and out of the container.

D is a first transmission means for transmitting rotational power to the molded object l;
Reference numeral E denotes a second transmission means for transmitting rotational power to the first transmission means, and is provided so as to be freely engageable with the first transmission means.

F is a drive means for transmitting rotational power to the second transmission means.

Next, details of each means and member will be explained.

The heating and cooling means A is connected to the container 2 as shown in FIGS. 1 and 2.
High-pressure steam is supplied from the outside to the internal heat converter 4, and an automatic valve 5 for supplying high-pressure steam and an automatic valve 6 for supplying cooling water are passed through the container 2 to the heat converter 4. Further, an automatic drain valve 7 is provided to penetrate the lower part of the container 2 from below the heat converter.

Further, 11 is an automatic valve that supplies inert gas such as high-pressure nitrogen gas (for example, 6 kg/cffll) into the container 2.

12 is an automatic valve that supplies high-pressure air into the container 2, and the gas is heated or cooled by the heat exchanger 4. 1
3 is a safety valve for reducing the pressure inside the container 2 when it exceeds a predetermined pressure.

In addition, as another example of the heating/cooling means, a means for heating or cooling may be provided outside the container 2, and the heated gas or cooling gas may be supplied into the container 2.

The blowing means B includes a fan 9 provided inside the container 2.

A motor 8 for driving the fan is installed outside the container 2 so as to maintain airtightness.

The heating gas and cooling gas sent by the fan 9 pass through the outer periphery of the wind barrel plate 10 shown in FIG.
0 and the object to be molded 1 so that it can be circulated by making a U-turn as shown by the arrow.

In this way, the heated gas passes over the surface of the molded object, thereby heating the molded object, and the cooling gas cools the molded object.

As shown in FIGS. 2 and 3, the molded object equipment member C is provided so that the molded object l can be attached to and removed from a mold 18, and the mold is supported by a core 19.

And means for rotatably supporting the molded object.

A grooved guide roller 24 shown in FIG. 4 and FIG. The bin 22 is rotatably supported by a bearing 21, and the support stand 23 is attached to the cart 1 shown in FIGS. 2 and 3.
It is installed at both ends of the frame of No. 6.

As shown in FIG. 2, the means for allowing the molded object equipment member to move in and out of the pressure vessel is to lay a rail 14 in the lower part of the vessel 2 and along its longitudinal direction, and the rail is covered with a The trolley 16 on which the molded body equipment member C is mounted is provided so that it can be carried into and out of the container.When carrying out one trolley 16, the door 3 shown in FIG. 1 is opened and the elevator platform 5o is moved. street.

It is provided so that it can be transferred to an external working position where the object to be formed 1 is removed from the formwork 18.

The first transmission means is provided at one end of the trolley 16 as shown in FIG. 2, and a bearing 26 and a bearing 27 are placed on the frame at one end with a space between them as shown in FIG. The intermediate shaft 25 is rotatably supported by the bearing.

A spur gear 30 is fitted and fixed to one end of the intermediate shaft 25, and a bevel gear 28 is fitted and fixed to the other end.

Further, the bevel gear 28 meshes with another bevel gear 29 at right angles, and the bevel gear 29 is fitted and fixed to a shaft 31 shown in FIG. A spur gear 34 is fitted and fixed to the other end of the shaft 31, and the spur gear 34 is meshed with a spur gear 35 having a thin core 19 shown in FIG.

Note that as another example of the first transmission means, a friction transmission device using a combination of transmission means 2 other than gears, such as friction wheels, may be used.

The second transmission means E is installed on the side of the container 2 as shown in FIG. 3, and includes a drive shaft 37 and a spur gear 43 of the drive shaft.
is rotatably supported, and one rotational power is transmitted from a drive means F (described later) to the first transmission means described above.

The drive shaft 37 is connected to the container 2 as shown in FIG.
It is rotatably supported by a bearing 40 and a bearing 41 fitted into a holding frame 38 integrated with the holding frame 38 and another holding frame 39 fixed to the holding frame.

The inside of the container 2 is provided to maintain airtightness by a sealing mechanism 42 such as a mechanical seal.

Further, a spur gear 43 is fitted and fixed to the inside of the container on the drive shaft, and the spur gear 43 is connected to the spur gear 3o of the first transmission means.
It is provided so that it can be engaged with.

On the other hand, on the outside of the container, a torque limiter 44 (a torque limiter is a torque transmitting member provided so that a sprocket etc. will slip and power transmission becomes impossible when a load exceeding a set value is applied) is fitted and fixed, The torque limiter
A sprocket 45 shown in FIG. 6 is attached to the sprocket 45 so that it can slide under a load exceeding a set value.

Note that as another example of the second transmission means, a gear transmission or a friction transmission may be used, and the object of the present invention can be achieved without necessarily using the torque limiter.

As shown in FIG. 3, the driving means F has a motor 47 installed outside the container 2 and adjacent to the second transmission means, and a sprocket 48 is fitted and fixed to the output shaft of the motor.
Further, a chain 46 is connected to the sprocket and the sprocket 45 of the torque limiter so that rotational power can be transmitted to the second transmission means by driving the motor.

The installation position of the motor 47 of the driving means is as follows.

For example, the torque limiter 44 of the drive shaft 37 of the second transmission means may be removed, and the output shaft of the motor 47 of the drive means may be connected to the drive shaft 37 with a joint or the like. Good too.

Next, the operation of the embodiment will be explained.

The molded object equipment member C equipped with the stepped molded object 1 is placed on a trolley 16 and carried into the pressure vessel 2.

The spur gear 30 of the first transmission means is engaged with the spur gear 43 of the second transmission means E.

Step 2. When the engagement is completed, the motor 4 of the drive means F
7 to transmit the rotational motion J to the second transmission means D to the first transmission means D to the to-be-formed object equipment member C, and the to-be-formed object l
After rotating and confirming the rotation, the door 3 is closed to seal the container 2.

Step 3. When the sealing is completed, the automatic valve 11 is operated to supply high pressure nitrogen gas (for example, nitrogen gas whose pressure is regulated to maintain 6 kg/co!).

Step 4 Once gas is supplied into the container 2.

Activate the automatic valve 5 to generate high pressure steam (e.g. 180°C steam)
is supplied to the heat exchanger 4, the nitrogen gas is heated, and the motor 8 of the blowing means B is operated to send the heated residue to the wind barrel plate 1.
0 to heat the molded object 1. Here, the temperature of the nitrogen gas is controlled to a temperature necessary for molding the object 1 to be molded.

Step 5 When the required time has elapsed, the automatic valve 5 is operated in reverse to stop the high-pressure steam, and the automatic valve 6 is operated to supply cooling water to the heat exchanger 4 to cool the nitrogen gas and gradually cool the molded object 1. do.

Step 6: When the molded object 1 is cooled to, for example, about 60°C, the automatic valve 11 is operated in reverse to discharge the high-pressure nitrogen gas in the container 2 and reduce the pressure to atmospheric pressure, and the motor 8 and motor 47 are stopped. to stop the air blowing and the rotation of the molded object 1. At the same time, the automatic valve 6 is operated in reverse to stop the supply of cooling water, and the molded object 1 is molded by thermosetting adhesive.

After step 71, the door 3 is opened and the molded object 1 is taken out from the container 2. At this time, the spur gear 30 of the first transmission means provided on the first carriage 16 is disengaged from the spur gear 43 of the second transmission means, and the rotational power is cut off.

Step 8 The carried out molded object 1 is removed from the frame 18 of the molded object equipment member C by the operator, and one step is completed. a to-be-formed body equipment member provided with means for rotatably supporting the to-be-molded body and provided to be freely removable in and out of the container; and a first transmission means provided on the to-be-formed body equipment member. ,
on the outside of said container.

In addition, since the pressure vessel is provided with a drive means provided on the side of the container, and a second transmission means provided on the drive means such that it can freely engage with the first transmission means, the door of the pressure vessel is opened. You can check the rotation of the molded object.

Not only is it easy to use, but it also prevents uneven resin distribution due to the molded object not rotating during molding, and has excellent characteristics.
You can get P.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway schematic side view showing an embodiment of the apparatus according to the present invention. FIG. 2 is a schematic vertical sectional view of the apparatus shown in FIG. 1. FIG. 3 is a vertical sectional view taken along the line XX in FIG. 2. FIG. 4 is a schematic front view of the first transmission means shown in FIG. 2. FIG. 5 is a YY cross-sectional view of FIG. 4. FIG. 6 is a schematic longitudinal cross-sectional view of the mounting portion of the drive means and the second transmission means. A. Heating/cooling means, B. Air blowing means, C... Molded object equipment member, D... First transmission means. E: Second transmission means, F: Drive means. 1 ・Object to be molded, 2...Pressure vessel, 3...---
door. 4... Heat exchanger, 5, 6, 7, 11.12...
・・Automatic valve, 8・Motor, 9・Fan, 10・
...Wind body plate, 13...Safety valve, 14...Rail. 15... Frame, 16... Trolley, 17... Roller. 18. ・Formwork, 19... Thin, 21, 26゜2
7.32. ．． 33,40.41・old・・bearing, 22・・
- Bottle, 23... Support stand, 24... Guide row. U, 25...Intermediate shaft, 28.29...Bevel gear. 31... Shaft, 30, 34, 35.43... Spur gear, 37... Drive shaft, 38.39... Holding frame. 42...Sealing mechanism, 44...Torque limiter-24
5, 48... Sprocket, 46... Chain, 47... Motor, 50... Lifting platform. Patent applicant Ashida Seisakusho Co., Ltd. Figure 4 Y-1←]

Claims (1)

[Scope of Claims] A pressure vessel for accommodating a to-be-molded object; a to-be-molded object equipment member provided with means for rotatably supporting the to-be-molded object and provided so as to be able to move in and out of the container; a first transmission means provided on the molded object equipment member; a drive means provided outside the container and on the side of the container; and a drive means provided on the drive means so as to be engageable with the first transmission means. 1. A fiber-reinforced plastic molding apparatus, comprising: a second transmission means; and a molded object heating/cooling means attached to the container.