JP3324190B2 - Press forming equipment for thermoplastic resin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermoplastic resin press molding equipment.

[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, and a low-pressure compressor 3 is mounted at the tip of the low-pressure compressor drive shaft 2. A low-pressure turbine 4 is attached to the rear end of the shaft 2, and a hollow high-pressure compressor drive shaft 5 is rotatably fitted around an intermediate portion of the low-pressure compressor drive shaft 2. A compressor 6 is mounted, a high-pressure turbine 7 is mounted on the rear end of the high-pressure compressor drive shaft 5, and a combustor 8 is provided at an intermediate position between the high-pressure compressor 6 and the high-pressure turbine 7 inside the engine body 1.
Is provided.

A low-pressure compressor blade 10 projecting outward from the engine body 1 is mounted on 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.
0 is disposed, and the engine body 1 and the outer cylinder 11 are provided.
And a fan outlet guide vane 12 is provided between them.

Reference numeral 13 denotes air, 14 denotes combustion gas generated by the combustor 8, and 15, 16 and 17 denote stationary blades attached to the inner periphery of the engine body 1.

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

Then, the combustion gas 14 generated by the combustion is
Flows backward in the engine main body 1 to rotate the high-pressure turbine 7 and the low-pressure turbine 4 provided behind the combustor 8, and thereafter is injected from the rear part of the engine main 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 rotor blades 10 attached to the disk 9 of the low-pressure compressor 3 rotate to draw air 13 into the outer cylinder 11, and a part of the sucked air 13 is introduced into the engine main body 1 to reduce the pressure. Compressed by the turbine 4.

The air 13 compressed by the low-pressure turbine 4 is
It is compressed to a high pressure by a high-pressure compressor 6 driven via a high-pressure compressor drive shaft 5 by rotation of a 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 outer cylinder 1 is
The remaining air 13 introduced into the inside 1 flows between the engine body 1 and the outer cylinder 11, is rectified by the fan outlet guide vanes 12, and is then injected from the rear of the outer cylinder 11 to generate thrust. Has become.

In the above-described jet engine, use of resin parts has been studied for weight reduction.
The fan outlet guide blades 12 are kept at a lower temperature than the inside of the engine body 1 that is heated to a high temperature by the combustion of the fuel, and the stationary blades 15 and 16 that are fixed at a relatively low temperature inside the engine body 1. Resinification has begun.

As a material for the fan outlet guide blades 12, a thermosetting resin such as an epoxy resin is typical, but a thermosetting resin such as an epoxy resin is brittle even though it has strength. However, there is a problem that it cannot withstand the impact of birds and other flying objects into the engine and sand erosion caused by sand or volcanic ash sucked into the engine, and has higher toughness than thermosetting resins such as epoxy resin. Use of a thermoplastic resin having tenacity against impact force has been studied.

When a thermoplastic resin is used, the raw material of the thermoplastic resin is put into a mold, heated together with the mold to a melting temperature, heated and melted, and maintained for a certain period of time, followed by shaping. In addition, heating, shaping, and cooling and solidifying steps are required to cool and solidify the thermoplastic resin together with the mold.At the same time, a slight press load is applied to the thermoplastic resin in the mold during the heating step. It is necessary to apply a low press load in the forming stage and a high press load in the cooling and solidifying stage, and it is important to control the optimal press load in each stage.

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

[0016]

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

That is, each of the heating, shaping, and cooling and solidifying steps requires about one hour or more, and therefore, the production efficiency is poor.

Further, it is difficult to control the press load over a wide range from a very small press load in the heating stage to a high press load in the cooling and solidifying stage with one press device with high accuracy. It was difficult to obtain a product having the following.

In view of the above-mentioned circumstances, the present invention provides a thermoplastic resin press-forming facility capable of providing a press load required at each stage with high precision and achieving an improvement in production efficiency. The purpose is to provide.

[0020]

According to the present invention, a conveying line for feeding 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 conveying line. Form adjacently and simultaneously mold multiple
In a thermoplastic resin press molding facility configured to handle
There is a bed on each stage that supports the underside of the mold,
And a slide for pressing the upper surface of the mold.
Has the required press capacity at each stage.
Separately connected press machines, and the heat inside the mold
Each stage to control the temperature of the plastic resin independently
Connect the temperature control device in the bed and the slide, the gold
A heating device is embedded in the mold, and the mold is sent to the heating stage.
Heating equipment so that the thermoplastic resin can be preheated before
The present invention relates to a thermoplastic resin press molding facility to which the above temperature control device is connected .

[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 passes through a heating stage, a shaping stage, and a cooling and solidifying stage provided in the middle of the transfer line in order. The press load and temperature are separately controlled by a press device and a temperature control device separately provided for each stage.

As a result, the thermoplastic resin in the mold is heated and melted in a heating stage, pressed and shaped by a low press load for a certain time in a shaping stage, and cooled while applying a high press load in a cooling and solidifying stage. As a result, the product is shrunk and solidified, and a product with high dimensional accuracy is formed.

As described above, according to the present invention, at each stage,
Handle multiple molds at the same time , and at each stage bed
And the temperature of the thermoplastic resin in the mold by the slide
Since the control is performed independently, the production efficiency for the product can be improved.

Also, a heating stage, a shaping stage, a cooling solid
Each stage of the reduction stage, independent press apparatus provided Rutotomoni have separate press capacity, mold heating scan
Preheat the thermoplastic before it is sent to the
In, it is possible to give a pressing load required in each stage with high precision, thus, it is possible to produce the desired product.

[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 made of a polyether ether ketone (hereinafter referred to as PEEK) -based thermoplastic resin is provided, and the thermoplastic resin film 18 is laminated. Thus, the laminated component 19 is configured.

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

The laminated component 19 and the injection molded component 2
A preform 21 which is a prototype of a product to be obtained is created by using a combination of a laminated component 19 and an injection molded component 20.

It should be noted that a fiber reinforced resin obtained by adding a carbon fiber to a PEEK-based 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 mold 22 and the lower mold 2
3 and a molding space 24 for the preform 21 inside.
Is provided.

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

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 guide for raising and lowering 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 constructed by separately connecting press devices 34 to 36 such as press cylinders having the press capability required in 8 to 30.

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

A preheating stage 38 is formed on the press frame 26 on the side of the heating stage 28,
A guide rail 39 for guiding the mold set 25 is provided between the preheating stage 38 and the bed 31 of each of the stages 28 to 30 of the press frame 26.
A feed bar 42 having a claw 41 for locking the mold set 25 is provided between one side of the mold set 25 and the other side of the mold set 25. The feed bar 42 is provided in the 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 toward and away from the mold is connected to form a transport line 46 for the mold set 25.

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

The roller tables 47 and 48 may be configured to connect the entrance and exit sides of the transport line 46 in a loop.

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

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

Further, a coolant passage 55 is formed in the bed 31 and the slide 32 of each of the stages 28 to 30, and the supply and discharge of the coolant to and from the coolant passage 55 are performed by a signal from the temperature controller 56. A cooling device 57 is provided.

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

Next, the operation will be described.

A polyether ether ketone (hereinafter referred to as PEEK) -based thermoplastic resin or a thermoplastic resin film 18 formed by laminating a fiber reinforced resin containing carbon fibers into a film is laminated. Laminated parts 1
9, a PEEK-based thermoplastic resin or a fiber-reinforced resin containing carbon fibers therein is injection-molded with an injection molding machine (not shown) to provide an injection-molded part 20 and the like. By combining the injection-molded parts 20, a preform 21 which is a prototype of, for example, a fan outlet guide blade or a stationary blade 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 on a raw material insertion stage (not shown) provided in the middle of the roller table 47 on the side of the transport line 46. The preform 21 is placed in 24.

Thus, the preform 2 is added to the mold set 25.
1 is set, the mold set 25 is
7, a heating device 49 such as a rod-shaped heater embedded in the mold set 25 is connected to the connector 50 of the connection device 51, and a solid line A in FIG. The preform 21 in the mold set 25 is preheated for about one hour to increase the temperature, as shown in the section C in the section.

When the mold set 25 is sent to the preheating stage 38, the feed cylinder 42 is moved toward and away from the mold set 25 by the locking cylinder 44 of the feed bar driving device 45, so that the claws of the feed bar 42 are moved. Part 41
To the mold set 25.

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

At the same time, when the temperature of the heating stage 28 rises, if necessary, the press set 34 is used to apply approximately 1 ton to the mold set 25 as shown in the section d in the dashed line B in FIG. The following minute press load is applied.

When the preform 21 in the mold set 25 is melted by the heating stage 28, the mold set 25 is sent to the shaping stage 29 using the feed bar driving device 45 in the same manner as described above, and the shaping stage 29 In the heating device 49,
53 and a temperature control device 52, 54, or a coolant flow path 55 formed in the bed 31 and the slide 32.
By using the cooling device 57 and the temperature control device 56 to flow the cooling liquid, the temperature of the preform 21 in the mold set 25 is set to be lower than the melting temperature as shown in a section E in the solid line A in FIG. It is controlled to be slightly lower, and at the same time, using the press device 35, while applying a low press load of about several ton to the mold set 25 as shown in the section E in the dashed line B in FIG. By holding the preform 21 for about one hour, the preform 21 is given a predetermined shape.

The shaping stage 29 is required to have the ability to finely 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 by using the feed bar driving device 45 as described above, and Bed 31 at 30
By flowing the coolant through the coolant passage 55 formed in the slide 32 by using the cooling device 57 and the temperature control device 56, the mold set 25 is formed as shown in the section indicated by the solid line A in FIG. The temperature of the preform 21 in the inside is lowered over about one hour, and at the same time, a pressing load as high as several tens tons is applied to the metal using the pressing device 35 as shown in the section to the section indicated by the dashed line B in FIG. By applying to the mold set 25, the mold set 25 is tightened while following the shrinkage of the preform 21, and a highly accurate product is obtained.

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

The product thus obtained is PEEK
Since it is made of a thermoplastic resin and a carbon fiber reinforced resin containing carbon fibers, it has high toughness and has tenacity against impact force, so it has a strong but brittle epoxy resin Products such as fan exit guide wings that have better erosion resistance than thermosetting resins such as resin

The mold set 25 from which the product has been removed is sent to the entry roller table 47, and is 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, and the cooling and solidifying stage 3
In each of the stages 0, a plurality of mold sets 25 are handled at the same time , and the bed 31 and the slide 32 of each stage are
Separate and independent temperature of thermoplastic resin in mold set 25
, The production efficiency for the product can be improved.

The heating stage 28 and the shaping stage 2
9. Each stage of the cooling and solidification stage 30 has an independent press device 34 to 36 having a separate press capability.
Is provided , and the mold set 25 is connected to the heating stage 2.
Since the thermoplastic resin can be preheated before it is sent to 8, the press load required in each step can be applied with high precision, and thus a desired product can be manufactured.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that various changes can be made without departing from the spirit of the present invention.

[0059]

As described above, according to the thermoplastic resin press molding equipment of the present invention, at each stage,
In addition to handling multiple molds, the bed and
Ride separate and independent temperature of thermoplastic resin in mold
Control, which can improve production efficiency for products.
Heating stage, shaping stage, cooling solidification stage
Each stage of the page has an independent press capability
Press equipment is provided and the mold is heated
Each preform can be preheated before it is sent to
Apply the required press load with high precision
It is possible to produce the desired product
Various excellent effects that are possible.

[Brief description of the drawings]

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

FIG. 2 is a front view of a preform.

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

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

[Explanation of symbols]

Reference Signs List 25 mold (mold set) 28 heating stage 29 shaping stage 30 cooling and solidifying stage 31 bed 32 slides 34 to 36 press device 38 preheating stage 46 transport line 51 heating device 52 temperature control device 54 temperature control device 56 temperature control device

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Atsushi Hirose 1st Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Pref. Ishikawajima-Harima Heavy Industries, Ltd. (56) References JP-A-2-67110 (JP, A) JP-A-50-135163 (JP, A) JP-A-58-71124 (JP, A) JP-A-56-135838 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 43/04-43/08 B29C 33/34-33/36 B29C 39/04-39/06

Claims (1)

(57) [Claims] 1. A provided conveyance line to send the mold for molding the thermoplastic resin, in the middle of the conveying line, a heating stage, and the shaping stage, the cooled and solidified stage formed by adjacent, at the same time a plurality Heat configured to handle multiple molds
Press forming equipment for plastic resin, each stage having a bed supporting the lower surface of a mold, and a mold
A slide for pressing the upper surface of the
Press with the required pressing ability for each
The equipment is connected separately and the thermoplastic resin in the mold at each stage
Bed for each stage to control fat temperature independently
And a temperature control device is connected to the slide, a heating device is embedded in the mold, and the mold is a heating stage.
Heating equipment so that the thermoplastic resin can be preheated before being sent to
Press forming equipment for thermoplastic resin, characterized in that another temperature control device is connected to the device .