WO2021172597A1

WO2021172597A1 - Device for manufacturing molded article from fiber-reinforced resin material, and method for manufacturing molded article

Info

Publication number: WO2021172597A1
Application number: PCT/JP2021/019941
Authority: WO
Inventors: 友明済藤; 祥史首藤
Original assignee: 株式会社ＴｈｅＭＯＴＣｏｍｐａｎｙ
Priority date: 2020-10-09
Filing date: 2021-05-26
Publication date: 2021-09-02
Also published as: CN113939396B; CN113939396A; JP2022062870A; JP6893011B1

Abstract

The present invention can promote high-cycle mass production by shortening the cycle time for manufacturing a molded article from a fiber-reinforced resin material using a press. Heating means that supply heat energy to a pair of upper-lower dies are respectively disposed so as to be capable of moving toward and away from the back surfaces of the upper and lower dies with cooling means that cool the pair of dies after heating and compression molding respectively interposed therebetween.

Description

Molded product manufacturing equipment for fiber reinforced plastic material and molding product manufacturing method

The present invention relates to a fiber reinforced resin molded product manufacturing apparatus whose strength is increased by combining with fibers such as glass fiber and carbon fiber, and a method for manufacturing a fiber reinforced resin molded product using this molded product manufacturing apparatus.

In addition to the above glass fibers and carbon fibers, synthetic resin fibers such as cellulose, boron and aramid are known as fibers used. The material obtained by impregnating or mixing these fibers as continuous fibers or discontinuous fibers (short fibers) with a thermosetting resin or a thermoplastic resin is a prepreg, a sheet molding compound (SMC), or a tape-like, sheet-like, or mat-like material. It is provided as a fiber reinforced resin material (processed material) in the form of.

The above materials are molded into a desired shape by a press to be manufactured as a fiber reinforced plastic material (FRP) molded product, and are supplied to a wide range of fields such as building materials and constituent materials of ships or aircraft.
Press molding is a slide in which a pair of dies (generally, one: a female upper die (cavity) and the other: a male lower die (core)) are driven by a hydraulic cylinder or an electric motor. The processed material (for example, prepreg) that is moved up and down and inserted between the pair of dies (above the lower die) is heated and compressed by a press to form a required shape, cooled, and then the upper and lower dies are opened. And take it out as a product.

Patent Document 1 can be cited as a disclosure of this type of prior art. Patent Document 1 uses a press molding die that eliminates the variation in resin impregnation due to non-uniformity of pressurization and heating in a press using an insert piece by providing an elastic body between the insert piece and the heating means. Disclose the molding method used.

Japanese Patent No. 5826243

The cooling time of the mold required for shape stabilization until the product is taken out after heating and compression by the mold when molding a molding material such as prepreg with a press largely depends on the production time (process time, cycle time).
In Patent Document 1, a heating means (heater) is embedded in one transfer molding portion and the other transfer molding portion of a pair of molds for imparting a required shape to the molding material, and the heating means (heater) is embedded directly in the molding material. Adjacent to supply thermal energy. On the other hand, the flow path of the cold water as the cooling means is provided on the opposite side of the transfer molding portion of the movable mold and the fixed mold, that is, on the outside of the heating means.

In this configuration, after performing the required molding process by heat compression, it takes a considerable amount of time for the cooling means to lower the temperature of the mold (transfer molding part) and the molded product, open the mold, and take out the molded product. You will need it. That is, even if the electric power to the heater is stopped and cold water is passed through the cooling means, a considerable amount of residual heat remains in the mold (entry piece), so that the cooling means must also suck out this residual heat. It takes a long time for the temperature of the mold to drop to a value at which the molded product can be taken out. This becomes an obstacle to shortening the cycle time of the manufacturing process, and is a problem to be solved in order to achieve a so-called high cycle.

The present invention is to solve the above-mentioned problems of the prior art, shorten the cycle time in the production of molded products of fiber reinforced resin materials by pressing, and promote high-cycle mass production.

In order to achieve the above object, the present invention provides heating means for supplying heat energy to a pair of upper and lower molds via cooling means for cooling the pair of molds after the heat compression molding process. The feature is that it is arranged so that it can be attached to and detached from the back surface. The present invention includes the following.

[1] An apparatus for producing a molded product of a fiber-reinforced resin material by press molding using a pair of upper and lower dies consisting of an upper die having a cavity and a lower die having a core.
Heating means for supplying heat energy to the pair of upper and lower molds are installed on each back surface of the pair of molds via cooling means for cooling the pair of molds, and are arranged so as to be detachable from the cooling means. A molded product manufacturing device for fiber-reinforced resin material, which is characterized by the fact that it has been used.

[2] The means according to [1], wherein the means for supplying heat energy to the upper mold and the lower mold is a cartridge heater or a high-frequency power source loaded in a cavity provided in the upper and lower heating plates. Molded product manufacturing equipment for fiber-reinforced resin materials.

[3] The cooling means for cooling the upper mold and the lower mold by the upper cooling plate and the lower cooling plate is cold water or oil flowing through a serpentine tube embedded in the upper cooling plate and the lower cooling plate. The apparatus for producing a molded product of a fiber-reinforced resin material according to [1].

[4] A method for producing a molded product of a fiber-reinforced resin material by press molding using an upper mold having a cavity and a lower mold having a core.
The upper mold is formed by forming an upper unit with an upper cooling plate joined and arranged on the back surface opposite to the cavity and an upper heating plate arranged so as to be in contact with and detachably from the upper cooling plate. The lower mold is composed of a lower cooling plate joined and arranged on the back surface opposite to the core and a lower heating plate arranged in thermal contact with the lower cooling plate so as to be detachable from the lower cooling plate. It consists of the lower unit,
Material insertion in which a fiber reinforced resin material is inserted on the core of the lower mold between the cavity of the upper mold constituting the upper unit and the core of the lower mold constituting the lower unit. Process and
Provided in contact with the upper heating plate provided in contact with the upper cooling plate joined to the back surface of the upper mold constituting the upper unit and the lower cooling plate joined to the back surface of the lower mold. A heat step of press-molding the fiber-reinforced resin material while heating and compressing the fiber-reinforced resin material in a state where heat energy is transferred and supplied to the upper mold and the lower mold through the lower heating plate.
After the lapse of the required heating / compression treatment time, the supply of heat energy to the upper mold and the lower mold is stopped, and the cooling medium is supplied to the upper cooling plate and the lower cooling plate to supply the upper mold. A cooling step of cooling the mold, the lower mold and the fiber-reinforced resin material to a given temperature, and
When the fiber-reinforced resin material is cooled to a required temperature, the pressurization between the upper unit and the lower unit is released to open the upper mold and the lower mold to obtain a fiber-reinforced resin molded product. Molded product to be taken out The process of taking out and
A method for producing a molded product of a fiber reinforced resin material, which comprises.

[5] When stopping the supply of heat energy to the upper mold and the lower mold, heat bonding of each of the upper heating plate and the lower heating plate with the upper cooling plate and the lower cooling plate is performed. The method for producing a molded product of a fiber-reinforced resin material according to [4], which comprises a heating plate retracting step of releasing.

The cavity 1a and the core 2a provided in the upper and lower molds in the above configuration may be formed in either the upper or lower mold. Further, the present invention can also be applied to a mold of a method using an insert piece.

The present invention is not limited to the above configuration and the configuration of the examples described in the embodiments described later, and various modifications can be made within the scope of the technical idea of the present invention.

According to the present invention, by retracting the heating plate from the mold provided with the cooling plate, the cooling time of the mold in press working can be significantly shortened, and high-cycle mass production can be realized.

The schematic diagram explaining the whole structure of the molded article manufacturing apparatus of the fiber reinforced resin material which concerns on this invention. Top view of the molded product manufacturing apparatus for the fiber reinforced resin material according to the present invention shown in FIG. Explanatory drawing of the structure excluding the upper mold of the upper unit constituting the molded article manufacturing apparatus of the fiber reinforced resin material which concerns on this invention. Explanatory drawing of the structure excluding the lower die of the lower unit constituting the molded article manufacturing apparatus of the fiber reinforced resin material which concerns on this invention. Schematic cross-sectional view illustrating an example of a cooling plate constituting a molded article manufacturing apparatus for a fiber reinforced resin material according to the present invention. Schematic cross-sectional view illustrating an example of a heating plate constituting a molded article manufacturing apparatus for a fiber reinforced resin material according to the present invention. The schematic diagram explaining the molded article manufacturing process of the fiber reinforced resin material which concerns on this invention. The schematic diagram following FIG. 7A explaining the process of manufacturing the molded article of the fiber reinforced resin material which concerns on this invention. Flow chart describing an example of the procedure for manufacturing a molded product of a fiber reinforced resin material according to the present invention.

Hereinafter, the molded product manufacturing apparatus and manufacturing method of the fiber reinforced resin material according to the present invention will be described in detail with reference to the drawings of Examples.

FIG. 1 is a schematic view illustrating the overall configuration of a molded product manufacturing apparatus (press machine) for a fiber reinforced resin material according to the present invention, and FIG. 2 is a molded product manufacturing apparatus for a fiber reinforced resin material according to the present invention shown in FIG. It is a top view of. FIG. 3 is an explanatory view of a structure excluding the upper mold of the upper unit constituting the fiber-reinforced resin molded product manufacturing apparatus according to the present invention, and FIG. 4 is a fiber-reinforced resin molded article manufacturing apparatus according to the present invention. It is explanatory drawing of the structure excluding the upper mold of the lower unit which constitutes.
FIG. 1 shows an embodiment of a molded product manufacturing apparatus for a fiber reinforced resin material according to the present invention, which is installed on a base 13 of a press machine and has an upper die 1 having a cavity 1a and a lower die having a core 2a. It is a press molding apparatus using a pair of upper and lower dies composed of two. In this embodiment, the female (concave) shape formed on the upper mold 1 side is referred to as the cavity 1a, and the male (convex) shape formed on the lower mold 2 is referred to as the core 2a. The 1a and the core 2a may be formed on either the upper or lower mold, and are not particularly limited.

This molded product manufacturing device is a device suitable for heat-and-cool molding that heats and cools a mold, and is a heating means that supplies heat energy to a pair of upper and lower molds (upper mold 1 and lower mold 2). (Upper heating plate 5, lower heating plate 6) and cooling means (upper cooling plate 3, lower cooling plate 4) are provided.
The heating means (5, 6) are installed on the back surfaces of the pair of molds (1, 2) via the cooling means (3, 4) for cooling the molds (1, 2), and the heating means (5) , 6) are arranged so as to be in contact with and separated from the cooling means (3, 4).

As shown in the top view of FIG. 2 (showing the plane of the upper heating plate 5), the molded product manufacturing apparatus of this embodiment is a rectangular vertical cooling plate (3, 4) laminated on a rectangular upper and lower mold. It has a structure in which upper and lower heating plates (5, 6) are laminated.
As shown in detail in FIG. 3, upper unit pins 7a to 7d (7c to 7d are not shown) are vertically formed in the upper pin grooves (pin insertion holes) 8a to 8d formed in the four corners of the upper heating plate 5. It is inserted in a state where it can be moved and the escape is restricted (see FIG. 1).
Further, the lower heating plate 6 has the same structure, and the lower unit pins 9a to 9d can move up and down in the lower pin grooves (pin insertion holes) 10a to 10d bored at the four corners. It is inserted with the lateral displacement suppressed. The lower unit pins 9a to 9d can also be installed so that they can be pulled out.
The upper and lower molds (1, 2) are integrally connected to the upper and lower cooling plates (3, 4) by connecting screws 15, respectively.

In this way, the upper mold 1 has an upper cooling plate 3 joined and arranged on the back surface opposite to the cavity 1a, and an upper heating plate arranged in thermal contact with the upper cooling plate 3 so as to be detachable from each other. It has an upper unit 100 composed of 5 and 5.
Further, the lower mold 2 includes a lower cooling plate 4 joined and arranged on the back surface opposite to the core 2a, and a lower heating plate 6 arranged in thermal contact with the lower cooling plate 4 so as to be detachable from each other. It has a lower unit 200 composed of.

The fiber-reinforced resin material 14a inserted between the cavity 1a of the upper mold 1 and the core 2a of the lower mold 2 is heated by the upper heating plate 5 and the lower heating plate 6, and the upper mold 1 and the lower mold 2 are heated. The upper cooling plate is pressed by pressing with the upper heating plate 5 and the lower heating plate 6 is released from contact with each other, and the upper and lower dies are locked so as to maintain the pressed state (intermediate lock). The upper mold 1 and the lower mold 2 are cooled by 3 and the lower cooling plate 4, and the fiber-reinforced resin material is made into a molded product.

The upper unit 100 and the lower unit 200 constituting the molded product manufacturing apparatus of the fiber reinforced resin material in this embodiment will be described with reference to FIGS. 3 and 4.
Since the upper unit 100 and the lower unit 200 have the same structure when they are turned upside down, the upper unit 100 will be mainly described.

As described with reference to FIG. 1, the upper unit 100 includes an upper cooling plate 3 thermally joined by a joining surface 16 on the back surface opposite to the cavity 1a of the upper mold 1 shown in FIG. It is composed of an upper heating plate 5 which is arranged in thermal contact with the upper cooling plate 3 so as to be detachable. Similarly, the lower mold 2 is in thermal contact with the lower cooling plate 4 which is thermally joined and arranged on the back surface opposite to the core 2a at the joint surface 17 so as to be detachable from the lower cooling plate 4. It is composed of a lower heating plate 5 to be arranged.

The upper and lower molds (1, 2) and the upper and lower cooling plates (3, 4) are "arranged by thermal bonding" when the upper and lower molds (1, 2) and the upper and lower cooling plates (3, 4) are arranged. ) Means that an integral bond is formed so as to conduct good heat conduction.
Usually, the mold and the cooling plate are manufactured as separate parts. When this is incorporated into the press device, the mold and the cooling plate are placed in contact with each other so that heat transfer is smooth.
In addition, the fact that the cooling plate (3, 4) and the heating plate (5, 6) are "thermally contacted" creates the above-mentioned "thermally joined" state, but the contact can be released. It means that it is configured to be.

At the start of pressing, the upper heating plate 5 comes into contact with the upper cooling plate 3 against the upper unit springs 11a to 11d (see FIG. 2 for the positions of 11c and 11d) by a slide (not shown), and together with the upper mold 1. The person is lowered as a lump so as to compress the fiber reinforced resin material 14a placed on the lower unit 200.

The upper unit springs 11a to 11d are housed in the spring accommodating portion 18 (only the upper heating plate is designated) when the upper heating plate 5 is in pressure contact with the upper cooling plate 3.
The upper heating plate 5 is brought into contact with and separated from the upper cooling plate 3 by the upper unit pins 7a to 7d (7c and 7d are not shown) sliding on the upper pin groove 8a having a step for limiting the vertical distance. It has become.
The distance between the upper heating plate 5 and the upper cooling plate 3 is D1, and the distance d1 between the upper surface of the upper unit pins 7a to 7d and the back surface (the surface pushed by the slide) of the upper heating plate 5 is D1 ≦ d1. For example, 1 mm ≦ D1 ≦ 30 mm (5 mm in this embodiment).

FIG. 5 is a schematic cross-sectional view illustrating an example of a cooling plate constituting a molded product manufacturing apparatus for a fiber reinforced resin material according to the present invention, and FIG. 6 is a cross-sectional schematic diagram illustrating an example of a cooling plate constituting a molded product manufacturing apparatus for a fiber reinforced resin material according to the present invention. It is sectional drawing schematically explaining an example of a heating plate.
In FIG. 5, serpentine tubes (cooling medium flow paths) 24 and 25 are formed inside the upper and lower cooling plates (3, 4) made of a metal bulk material, and in this embodiment, cold water flows through these as a cooling medium. .. The cooling medium is not particularly limited as long as it can be cooled, and may be, for example, oil.
The cooling medium is distributed from the cooling medium source / opening / closing means 28 through the cooling

medium flow paths

24 and 25 to the recovery means 30 to lower the temperatures of the upper and lower molds (1, 2).

In FIG. 6, a plurality of cartridge heaters (26, 27) are installed on the upper and lower heating plates (5, 6) of the metal bulk material to heat the heating plates (5, 6).
During the period when the heating plates (5, 6) supply heat energy to the upper and lower molds (1, 2) via the cooling plates (3, 4), the upper and lower cooling plates (3, 4) are cooled. Stop the supply of media.
The heat generation control and on / off of the cartridge heaters (26, 27) are controlled by a control means or the like.

The cartridge heaters (26, 27) use Joule heat as a heat source, but instead, a high-frequency power supply using a high-frequency heating coil or the like can be used. That is, the means for supplying heat energy is not particularly limited, such as a heating device capable of heating. Further, superheated steam can be flowed through a serpentine tube similar to the cooling medium flow path described above for heating.

Next, an embodiment of a process of a method of manufacturing a molded product from a fiber-reinforced resin material using the molded product manufacturing apparatus according to the present invention described above will be described.

FIG. 7A is a schematic view illustrating a molded product manufacturing process of the fiber reinforced resin material according to the present invention, and FIG. 7B is a schematic diagram illustrating a molded product manufacturing process following FIG. 7A. FIG. 8 is a flow chart illustrating an example of a procedure for manufacturing a molded product of the fiber reinforced resin material according to the present invention.
Hereinafter, one embodiment of the manufacturing method according to the present invention will be described with reference to FIGS. 7A, 7B, and 8.

In the initial state, the slide (not shown) is stopped at the standby position, and the upper unit 100 and the lower unit 200 have the cavity 1a of the upper mold 1 and the core 2a of the lower mold 2 as shown in FIG. It is in a separated state.
An upper cooling plate 3 is joined to the back surface of the upper mold 1, and the upper heating plate 5 is separated from the back surface of the upper cooling plate 3 by extension of the upper unit springs 11a to 11d (11c to 11d are not shown). It is installed in the state where it is installed.

Similarly, for the lower mold 2, the lower cooling plate 4 is joined to the back surface of the lower mold 1, and the lower heating plate 6 is attached to the back surface of the lower cooling plate 4 from the lower unit springs 12a to 12d ( 12c to 12d are installed in a state of being separated by extension (not shown). In this state, the upper and lower units (100, 200) are on standby (process 1 in FIG. 8 (hereinafter, referred to as P1)).

Then, in the next process, the processing material (fiber reinforced resin material 14a) is inserted into the gap (between the cavity 1a and the core 2a) of the upper and lower dies (1 and 2) in the standby state (P2 in FIG. 8). ).

Next, operate the slide (not shown) and lower the slide completely. During the descent, the upper and lower heating plates (5, 6) are brought into contact with the upper and lower cooling plates (3, 4) in the one-step descent, and the force that presses against the upper and lower molds (1, 2) in the final descent. give. As a result, the processed material (fiber reinforced resin material 14a) is sandwiched and compressed ((a) in FIG. 7A). (P3 in FIG. 8).

Then, an electric current is passed through the heating means (cartridge heaters) of the upper and lower heating plates (5, 6) to heat the processed material (fiber reinforced resin material 14a) at a high temperature ((b) in FIG. 7A: heat step). .. (P4 in FIG. 8).

At the time of entering the process from P3 to P4, it is desirable to preheat the heating means (cartridge heater) to raise the temperature of the upper and lower molds (1, 2) in advance.

After the required time required for molding the processed material has elapsed, the slide is returned one step to cut off the current to the upper and lower heating plates (5, 6), and the upper and lower heating plates (5, 6) are changed to the upper and lower cooling plates (3). 4) is cut off, and a cooling medium (for example, cold water at 0 ° C to 10 ° C) is passed through the upper and lower cooling plates (3, 4) to lower the temperature of the processed material (fiber reinforced resin material 14a) (FIG. 7B). (C): Cool process). (P5 in FIG. 8).

The "returning the slide one step" means that the unit spring is extended and the upper and lower heating plates (5, 6) are released from contact with the upper and lower cooling plates (3, 4), but the upper and lower cooling plates are released. (3, 4) means a state in which the compressive force is held in the upper and lower molds (1, 2) integrally connected to the mold (1, 2).
That is, the upper and lower dies (1, 2) still maintain the state in which the processed material (fiber reinforced resin material 14a) is maintained in the compressed state. At the stage of P5, the compression of the upper and lower dies (1, 2) into the processed material (fiber reinforced resin material 14a) is maintained.

When the temperature of the upper and lower molds (1, 2) drops to the required value (for example, 80 ° C.) due to the cooling by the upper and lower cooling plates (3, 4), the cooling to the upper and lower cooling plates (3, 4) is performed. Shut off the supply of media and return the slide to its initial position.
As a result, the upper and lower dies (1, 2) are opened, and the molded processed product, that is, the fiber reinforced resin material 14 is taken out (demolded) ((d) in FIG. 7B). (P6 in FIG. 8).

By going through the above process, the cycle time required for heat treatment (heating → cooling) of the fiber-reinforced resin material processed by heat compression can be significantly shortened, and high-cycle production can be realized.
As a result, the unit price of the molded product can be reduced, which can contribute to the overall cost reduction.

The above manufacturing process is further explained in terms of process concept as follows. That is, the production of the fiber-reinforced resin molded product according to this embodiment includes the following steps.

(1) A fiber reinforced resin material is placed on the core 2a of the lower mold 2 between the cavity 1a of the upper mold 1 constituting the upper unit 100 and the core 2a of the lower mold 2 forming the lower unit 200. The material insertion process for inserting 14a and
(2) An upper heating plate 5 provided in contact with the upper cooling plate 3 joined to the back surface of the upper mold 1 constituting the upper unit 100, and a lower cooling plate joined to the back surface of the lower mold 2. A heat process in which a fiber-reinforced resin material is press-molded while being heated and compressed while heat energy is transmitted and supplied to the upper mold 1 and the lower mold 2 via a lower heating plate 6 provided in contact with 4. ,
(3) After the required heating / compression processing time has elapsed, the supply of heat energy to the upper mold 1 and the lower mold 2 is stopped, and the cooling medium (publicly) is applied to the upper cooling plate 3 and the lower cooling plate 4. Is a cooling process in which the upper mold 1 and the lower mold 2 and the fiber reinforced resin material 14a are cooled to a required temperature by supplying cold water or oil).
(4) When the fiber-reinforced resin material 14a is cooled to a required temperature, the pressing force for compressing the upper unit 100 and the lower unit 200 is released, and the upper mold 1 and the lower mold 2 are opened. , A step of taking out the molded product 14 from which the fiber reinforced resin molded product 14 is taken out.

Further, in a state where heat energy is transferred and supplied to the upper die 1 and the lower die 2, the fiber reinforced resin material 14a is pressed on the upper die 1 and the lower die 2 before the pressing process. A step of preheating the temperature of 1 or, if necessary, a preheating step of heating slightly higher than the glass transfer point or melting point temperature of the resin impregnated in the fiber-reinforced resin material can be included.

Further, when the supply of heat energy to the upper mold 1 and the lower mold 2 is stopped, the upper heating plate 5 and the lower heating plate 6 are separated from each other and the upper cooling plate 3 and the lower cooling plate 4 are separated from each other to generate heat. It is characterized by including a heating plate retracting step of releasing the target bonding.

According to the above-described embodiment, by retracting the heating plate from the die unit before the start of the cooling process, the cooling time of the die in press working is significantly shortened, and high-cycle mass production is realized. can.

1 ... Upper mold 1a ... Cavity 2 ... Lower mold 2a ... Core 3 ... Upper cooling plate 4 ... Lower cooling plate 5 ... Upper heating plate 6 ... Lower Heating plate 7 (ad) ・・・ Upper unit pin 8 (ad) ・・・ Upper pin groove 9 (ad) ・・・ Lower unit pin 10 (ad) ・・・ Lower side Pin groove 11 (ad) ・・・ Upper unit spring 12 (ad) ・・・ Lower unit spring 13 ・・・ Base 14 ・・・ Fiber reinforced resin processed product (molded product)
14a ・・・ Fiber reinforced resin material 15 ・・・ Connecting screw 16 ・・・ Joint surface with upper mold 17 ・・・ Joint surface with lower mold 18 ・・・ Spring accommodating part 20 ・・・ Upper cooling means (Upper cooling plate)
21 ... Lower cooling means (lower cooling plate)
22 ... Upper heating means (upper heating plate)
23 ... Lower heating means (lower heating plate)
24, 25 ... Cooling medium flow path (snake tube)
26, 27 ... Heating means (cartridge heater or high frequency power supply)
28 ... Cooling medium source / opening / closing means 30 ... Recovery means 100 ... Upper unit 200 ... Lower unit

Claims

It is a molded product manufacturing apparatus for fiber reinforced resin material by press molding using a pair of upper and lower dies consisting of an upper die having a cavity and a lower die having a core.
An upper cooling plate arranged on the surface opposite to the cavity of the upper mold and provided with cooling means,
A lower cooling plate arranged on the surface opposite to the core of the lower mold and provided with cooling means, and a lower cooling plate.
An upper heating plate that is separably arranged on the surface opposite to the upper mold contact surface of the upper cooling plate and is provided with a heating means, and an upper heating plate.
A lower heating plate that is separably arranged on the opposite side of the lower mold arrangement surface of the lower cooling plate and is provided with a heating means, and a lower heating plate.
An upper unit spring connecting the upper heating plate and the upper cooling plate,
A lower unit spring for connecting the lower heating plate and the lower cooling plate is provided.
When the fiber-reinforced resin material is pressed by the upper mold and the lower mold, the upper unit spring and the lower unit spring contract, so that the heating plate and the cooling plate are thermally joined. When cooling after heating, the fiber-reinforced resin material is maintained in a compressed state by the upper mold and the lower mold by the extension of the upper unit spring and the lower unit spring, and the heating plate and the heating plate are used. It is configured to be separated from the cooling plate.
Further, the upper heating plate and the upper cooling plate are connected by an upper unit pin whose exit from the upper cooling plate is restricted.
A fiber-reinforced resin molded product manufacturing apparatus in which the lower heating plate and the lower cooling plate are connected by a lower unit pin that suppresses lateral displacement between the lower heating plate and the lower cooling plate.
The heating means for supplying heat energy to the upper mold and the lower mold is a cartridge heater or a high-frequency power source loaded in a cavity provided in each heating plate installed in each of the upper mold and the lower mold. The apparatus for producing a molded product of a fiber-reinforced resin material according to claim 1, wherein the present invention is provided.
The fiber-reinforced resin according to claim 2, wherein the cooling means of each cooling plate for cooling each of the upper mold and the lower mold is cold water or oil flowing through a serpentine tube embedded in each cooling plate. Molded product manufacturing equipment for materials.
A method for manufacturing a molded product of a fiber-reinforced resin material by press molding using an upper mold having a cavity and a lower mold having a core.
The upper mold is formed by forming an upper unit with an upper cooling plate joined and arranged on the back surface opposite to the cavity and an upper heating plate arranged so as to be in contact with and detachably from the upper cooling plate. Configure and
The lower mold is a lower unit consisting of a lower cooling plate joined and arranged on the back surface opposite to the core and a lower heating plate arranged in thermal contact with respect to the lower cooling plate. Consists of
Material insertion in which a fiber reinforced resin material is inserted on the core of the lower mold between the cavity of the upper mold constituting the upper unit and the core of the lower mold constituting the lower unit. Process and
Provided in contact with the upper heating plate provided in contact with the upper cooling plate joined to the back surface of the upper mold constituting the upper unit and the lower cooling plate joined to the back surface of the lower mold. A heat step of press-molding the fiber-reinforced resin material while heating and compressing the fiber-reinforced resin material in a state where heat energy is transferred and supplied to the upper mold and the lower mold through the lower heating plate.
After the lapse of the required heating / compression treatment time, when the supply of heat energy to the upper mold and the lower mold is stopped, each of the upper heating plate and the lower heating plate, the upper cooling plate, and the above A heating plate retracting process that releases the thermal bonding with the lower cooling plate,
The supply of thermal energy to the upper mold and the lower mold is stopped, and a cooling medium is supplied to the upper cooling plate and the lower cooling plate to supply the upper mold, the lower mold, and the fiber-reinforced resin. A cool process that cools the material to a given temperature,
When the fiber-reinforced resin material is cooled to a required temperature, the pressurization between the upper unit and the lower unit is released to open the upper mold and the lower mold to obtain a fiber-reinforced resin molded product. Molded product to be taken out The process of taking out and
Including
The upper heating plate and the upper cooling plate are connected by an upper unit pin whose exit from the upper cooling plate is restricted.
Manufacture of a molded product of a fiber reinforced resin material, wherein the lower heating plate and the lower cooling plate are connected by a lower unit pin that suppresses lateral displacement between the lower heating plate and the lower cooling plate. Method.