JPH06285887A - Press molding facility for thermosetting resin - Google Patents

Abstract

PURPOSE:To provide a press load, required in respective stages, with a high accuracy and improve productive efficiency. CONSTITUTION:When a mold 25, filled with the material of thermosetting resin, is sent along a transfer line 46, the mold 25 is passed through a heating stage 28, a shaping stage 29 and a cooling and solidifying stage 30, provided on the way of the transfer line 46, sequentially. Press loads and temperatures are controlled individually by press devices 34, 35, 36 and temperature controllers 52, 54, 56, provided individually in respective stages 28-30, while the thermosetting resin in the mold 25 is heated and molten in the heating stage 28, shaped in the shaping stage 29 by being pressed with a low press load for a given period of time and is contracted and solidified by cooling while applying a high press load in the cooling and solidifying stage 30 whereby a product, having high dimensional accuracy, can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press molding facility for thermoplastic resins.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a jet engine.

A low pressure compressor drive shaft 2 is rotatably disposed at the axial center of a cylindrical engine body 1, a low pressure compressor 3 is attached to the tip of the low pressure compressor drive shaft 2, and a low pressure compressor drive is performed. A low-pressure turbine 4 is attached to the rear end of the shaft 2, a hollow high-pressure compressor drive shaft 5 is rotatably fitted on the outer periphery of the middle portion of the low-pressure compressor drive shaft 2, and a high pressure is applied to the tip of the high-pressure compressor drive shaft 5. The compressor 6 is attached, a high pressure turbine 7 is attached to the rear end of the high pressure compressor drive shaft 5, and a combustor 8 is provided in the engine body 1 at an intermediate position between the high pressure compressor 6 and the high pressure turbine 7.
To provide.

Further, a low-pressure compressor blade 10 projecting outward from the engine body 1 is attached to the disk 9 of the low-pressure compressor 3, and the low-pressure compressor blade 1 is attached to the tip of the engine body 1.
An outer cylinder 11 that surrounds 0 is provided, and the engine body 1 and the outer cylinder 11 are arranged.
A fan outlet guide vane 12 is provided between and.

Reference numeral 13 is air, 14 is combustion gas generated in the combustor 8, and 15, 16 and 17 are vanes attached to the inner circumference of the engine body 1.

Then, the fuel is supplied to the combustor 8 provided inside the engine body 1, and the air 13 is mixed with the fuel and burned.

Then, the combustion gas 14 generated by the combustion
Flows backward in the engine body 1 to rotate the high-pressure turbine 7 and the low-pressure turbine 4 provided behind the combustor 8, and then is injected from the rear part of the engine body 1 to generate thrust. ing.

When the low pressure turbine 4 is rotated,
The low pressure compressor 3 is driven via the low pressure compressor drive shaft 2,
The low-pressure compressor moving blade 10 attached to the disk 9 of the low-pressure compressor 3 rotates to suck air 13 into the outer cylinder 11, and a part of the sucked air 13 is introduced into the engine body 1 to lower the pressure. It is compressed by the turbine 4.

The air 13 compressed by the low pressure turbine 4 is
It is compressed to a high pressure by the high-pressure compressor 6 driven via the high-pressure compressor drive shaft 5 by the rotation of the high-pressure turbine 7.

The air 13 compressed by the high pressure turbine 7 is
It enters the combustor 8 and is used for burning fuel as described above.

On the other hand, the low pressure compressor moving blade 10 causes the outer cylinder 1 to move.
The remaining air 13 introduced into 1 flows between the engine body 1 and the outer cylinder 11, is rectified by the fan outlet guide vanes 12, and then is injected from the rear portion of the outer cylinder 11 to generate thrust. Has become.

In the above jet engine, it has been considered to use resin parts for weight reduction.
From the fan outlet guide vanes 12 that are kept at a lower temperature than the inside of the engine body 1 that is heated by the combustion of fuel, and the vanes 15 and 16 that are fixed to a relatively low temperature inside the engine body 1 Resinization has begun.

A typical material for the fan outlet guide vanes 12 is a thermosetting resin such as an epoxy resin, but the thermosetting resin such as an epoxy resin is brittle even though it has strength. However, it has the problem that it cannot withstand the impact of birds flying into the engine and the sand erosion caused by sand and volcanic ash inhaled into the engine.It has higher toughness than thermosetting resins such as epoxy resin. It is considered to use a thermoplastic resin having tenacity against impact force.

In the case of using a thermoplastic resin, the raw material of the thermoplastic resin is put into a mold and heated to a melting temperature together with the mold, and after heating and melting, shaping is performed while keeping the state as it is for a certain period of time. The steps of heating, shaping, and cooling and solidifying are required to cool and solidify the thermoplastic resin together with the mold, and at the same time, a small press load is applied to the thermoplastic resin in the mold at the heating stage. It is necessary to apply a low press load in the shaping step and a high press load in the cooling and solidification step, and it is important to control the optimum press load in each step.

Conventionally, there has been no press-molding apparatus which satisfies the above requirements and is suitable for press-molding a thermoplastic resin.

[0016]

However, since there is no press molding apparatus suitable for press molding a thermoplastic resin, the following problems occur.

That is, each of the steps of heating, shaping, and cooling and solidification requires a long time of about 1 hour or more, so that the production efficiency is poor.

Further, since it is difficult to control the press load in a wide range from a minute press load in the heating stage to a high press load in the cooling and solidifying stage with a high accuracy with one press machine, desired performance is obtained. Was difficult to obtain.

In view of the above-mentioned circumstances, the present invention is capable of applying a press load required at each stage with high accuracy and is capable of achieving an improvement in production efficiency. It is intended to provide.

[0020]

According to the present invention, a transfer line for sending a mold for molding a thermoplastic resin is provided, and a heating stage, a shaping stage and a cooling and solidifying stage are provided in the middle of the transfer line. Pressing devices that are formed adjacent to each other and that have the required pressing capacity for each stage are provided separately, and each stage is provided with a temperature control device that separately controls the temperature of the thermoplastic resin in the mold. The present invention relates to a press molding facility for thermoplastic resin.

[0021]

The operation of the present invention is as follows.

When the mold containing the raw material of the thermoplastic resin is sent along the transfer line, the mold is sequentially passed through a heating stage, a shaping stage, and a cooling and solidifying stage provided in the middle of the transfer line. The press load and the temperature are separately controlled by the press device and the temperature control device that are separately provided in each stage.

As a result, the thermoplastic resin inside the mold is heated and melted in the heating stage, pressed and shaped by the low pressing load for a certain period of time in the shaping stage, and cooled while applying a high pressing load in the cooling and solidifying stage. By doing so, it shrinks and solidifies, and a product with high dimensional accuracy is formed.

As described above, in the present invention, at each stage,
Since a plurality of molds can be handled at the same time, the production efficiency of products can be improved.

Further, since each stage is provided with an independent press device having a separate press capability, it is possible to apply the press load required in each stage with high accuracy, so that the desired product can be obtained. It is possible to manufacture

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention.

As shown in FIG. 2, a thermoplastic resin film 18 in which a poly-ether-ether-ketone (hereinafter referred to as PEEK) type thermoplastic resin is formed into a film is provided, and the thermoplastic resin film 18 is laminated. Then, the laminated component 19 is formed.

Further, a PEEK thermoplastic resin is injection molded by an injection molding machine (not shown) to provide an injection molded part 20 and the like.

Then, the laminated component 19 and the injection molded component 2
0 or a combination of the laminated component 19 and the injection-molded component 20 creates a preform 21 which is a prototype of the product to be obtained.

A fiber reinforced resin obtained by incorporating carbon fibers into a PEEK thermoplastic resin may be used as a raw material for the laminated component 19 and the injection molded component 20.

As shown in FIG. 1, the upper die 22 and the lower die 2
The molding space 24 of the preform 21 inside in combination with
A mold set 25 having

Further, a C-shaped press frame 26 is provided,
A heating stage 28, a shaping stage 29, and a cooling and solidifying stage 30 are sequentially formed on the press frame 26 along the longitudinal direction 27 from the entrance side.

Then, a bed 31 for supporting the lower surface of the mold set 25, a slide 32 for pressing the upper surface of the mold set 25, and a lifting / lowering of the slide 32 are guided to the respective stages 28 to 30 of the press frame 26. Guide posts 33 are provided, and each slide 32 is provided with each stage 2
A press mechanism 37 is configured by separately connecting press devices 34 to 36 such as a press cylinder having a press capacity required in 8 to 30.

As an example, the press device 34 of the heating stage 28 has a press capacity of about 1 ton, the press device 35 of the shaping stage 29 has a press capacity of about 5 ton, and the press device 36 of the cooling and solidifying stage 30 has a press capacity of about 50 ton. To do.

Then, a preheating stage 38 is formed on the press frame 26 on the inlet side of the heating stage 28,
A guide rail 39 that guides the mold set 25 is provided between the preheating stage 38 and the beds 31 of the stages 28 to 30 of the press frame 26.
30 to 38, a mold guide 40 is provided on one side of the mold set 25, and a feed bar 42 having a claw portion 41 for locking the mold set 25 is provided on the other side of the mold set 25. The feed bar 42 is provided with a longitudinal direction 27
Feed cylinder 43 and mold set 25 for moving to
A feed bar driving device 45 composed of a locking cylinder 44 for moving closer to and away from is connected to form a transfer line 46 of the mold set 25.

Roller tables 47 and 48 are arranged at both ends of the carrying line 46, and the entrance side roller table 47 has
A raw material insertion stage (not shown) for inserting the preform 21 into the mold set 25 is provided, and a product take-out stage (not shown) for taking out a product from the mold set 25 is provided at the delivery side roller table 48.

The roller tables 47, 48 may be arranged so that the entrance and exit sides of the carrying line 46 are connected in a loop.

Further, a heating device 49 such as a rod-shaped heater is embedded in the upper die 22 and the lower die 23, and the heating device 49 is connected to a temperature control device 52 via a connecting device 51 having a plurality of connectors 50. Connecting.

Similarly, bed 3 of each stage 28-30
1 and a heating device 53 such as a rod-shaped heater on the slide 32
And the heating device 53 is connected to the temperature control device 54.

A cooling liquid flow passage 55 is formed in the bed 31 and the slide 32 of each stage 28-30, and a cooling liquid is supplied to and discharged from the cooling liquid flow passage 55 in response to a signal from the temperature control device 56. A cooling device 57 is provided for the operation.

The cooling device 57 is the mold set 25.
May be similarly provided.

Next, the operation will be described.

Polyether-ether-ether-ketone (hereinafter referred to as PEEK) -based thermoplastic resin or a thermoplastic resin film 18 formed by film-forming a fiber reinforced resin containing carbon fibers is laminated. Laminated parts 1
9, a PEEK-based thermoplastic resin, or a fiber-reinforced resin obtained by containing carbon fibers therein is injection-molded by an injection molding machine (not shown) to provide an injection-molded component 20 and the like, and a laminated component 19 By combining the injection-molded parts 20, for example, a preform 21 which is a prototype of a fan outlet guide vane or a vane of a jet engine is created.

A molding space formed between the upper mold 22 and the lower mold 23 of the mold set 25 at a raw material insertion stage (not shown) provided in the middle of the roller table 47 on the entrance side of the transfer line 46. Put the preform 21 in 24.

Thus, the preform 2 is added to the mold set 25.
After setting 1, set the mold set 25 to the roller table 4
7, a heating device 49 such as a rod-shaped heater embedded in the mold set 25 is connected to the connector 50 portion of the connecting device 51 by the temperature control device 52, and the temperature controller 52 controls the solid line I in FIG. As shown in the section C in FIG. 3, the preform 21 in the mold set 25 is preheated for about 1 hour to be heated.

When the mold set 25 is sent to the preheating stage 38, the locking cylinder 44 of the feed bar driving device 45 causes the feed bar 42 to move toward and away from the mold set 25, thereby causing the claws of the feed bar 42 to move. Part 41
Are locked to the mold set 25.

Then, the mold set 2 is performed on the preheating stage 38.
When the preform 21 in 5 is preheated, the die set 25 is sent to the heating stage 28 by the feed cylinder 43, and in addition to the heating device 49 and the temperature control device 52, the bed 31 and the slide 32 are sent by the heating stage 28. The preform 21 in the mold set 25 is heated for about 1 hour by the heating device 53 and the temperature control device 54 such as a rod-shaped heater embedded in the, as shown in the section D of the solid line a in FIG. The temperature is raised to the melting temperature of the thermoplastic resin.

At the same time, when the temperature is raised in the heating stage 28, the press device 34 is used, if necessary, as shown in the section D in the alternate long and short dash line B in FIG. The following small press loads are applied.

When the preform 21 in the mold set 25 is melted on the heating stage 28, the mold set 25 is sent to the shaping stage 29 by using the feed bar driving device 45 in the same manner as described above. And the heating device 49,
53 and the temperature control devices 52 and 54, or the cooling liquid flow path 55 formed in the bed 31 and the slide 32.
By flowing the cooling liquid using the cooling device 57 and the temperature control device 56, the temperature of the preform 21 in the mold set 25 is higher than the melting temperature as shown in the section E of the solid line a in FIG. While controlling so as to be slightly lower, at the same time, using the pressing device 35, as shown in the section E of the alternate long and short dash line B in FIG. 3, while applying a low pressing load of about several tons to the mold set 25, A predetermined shape is given to the preform 21 by holding it for about 1 hour.

The shaping stage 29 is required to have the ability to delicately control the press load.

When the preform 21 in the mold set 25 is shaped by the shaping stage 29, the mold set 25 is sent to the cooling and solidifying stage 30 using the feed bar driving device 45 in the same manner as described above, and the cooling and solidifying stage is carried out. 30 in bed 31
By flowing the cooling liquid through the cooling liquid flow passage 55 formed in the slide 32 and the cooling device 57 and the temperature control device 56, as shown in the section of the solid line A in FIG. The temperature of the preform 21 therein is lowered over a period of about 1 hour, and at the same time, a pressing device 35 is used to apply a high press load of about several tens of tons, as shown in the section of the one-dot chain line B in FIG. By applying to the mold set 25, the mold set 25 is tightened by following the contraction of the preform 21, and a high-precision product is obtained.

When the preform 21 in the mold set 25 is cooled by the cooling and solidifying stage 30 in this way, the mold set 25 is sent to the roller table 48 on the output side by using the feed bar driving device 45, and A product is taken out from the mold set 25 at a product taking-out stage provided in the middle of the roller table 48.

The product thus obtained is PEEK
Epoxy resin that is strong but brittle because it has high toughness and toughness against impact force because it is composed of a thermoplastic resin of the series and a carbon fiber reinforced resin that contains carbon fiber. It is a product such as fan outlet guide vanes that has superior erosion resistance compared to thermosetting resins such as those used in systems.

The mold set 25 from which the product has been taken out is sent to the roller table 47 on the entrance side and used again in the same manner as described above.

According to the present invention, the preheating stage 38, the heating stage 28, the shaping stage 29, the cooling and solidifying stage 3
Since it is possible to handle a plurality of mold sets 25 at the same time in each stage of 0, the production efficiency for products can be improved.

Further, the heating stage 28 and the shaping stage 2
9. In each stage of the cooling and solidifying stage 30, independent press devices 34 to 36 having different press capabilities are provided.
Since it is provided, the press load required at each stage can be applied with high precision, and thus a desired product can be manufactured.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0059]

As described above, according to the press molding equipment for thermoplastic resin of the present invention, the press load required at each stage can be applied with high accuracy and the production efficiency can be improved. That is, the excellent effect can be achieved.

[Brief description of drawings]

FIG. 1 is a schematic overall perspective view of an embodiment of the present invention.

FIG. 2 is a front view of a preform.

FIG. 3 is a graph showing the relationship between temperature and press load and time.

FIG. 4 is a schematic side sectional view of a jet engine.

[Explanation of symbols]

 25 mold (mold set) 28 heating stage 29 shaping stage 30 cooling and solidifying stage 34 to 36 press device 38 preheating stage 46 transfer line 52, 54, 56 temperature control device

Claims (1)

[Claims] 1. A transfer line for sending a mold for molding a thermoplastic resin is provided, and a heating stage, a shaping stage, and a cooling and solidifying stage are formed adjacently in the middle of the transfer line, and each stage is formed. Each of the stages is provided with a press device having a required press capacity, and each stage is provided with a temperature control device for separately controlling the temperature of the thermoplastic resin in the mold. Press molding equipment.