JP5809484B2 - Forming method - Google Patents

Description

  The present invention comprises a reinforcing fiber and a matrix resin, for example, a forming method for forming a fiber reinforced resin member such as an automobile or an aircraft into a three-dimensional shape using a forming die and a fiber reinforced resin molded article. About.

  Conventionally, as a method for molding fiber reinforced resin, a flat laminated product is placed on a mold, the mold is evacuated and the resin is injected, and the flat laminated product is diffused and impregnated. A resin transfer molding method is known.

  Patent Document 1 discloses a forming method capable of automatically and accurately producing a flat laminated molded product having a three-dimensional shape suitable for use in this resin transfer molding method. It was.

  However, the forming method disclosed in Patent Document 1 uses a flat laminated molded product made of reinforced fibers and a thermosetting resin, and its moldability is limited. Moreover, once cured, there is a problem that it cannot be recycled because it cannot be dissolved by heat or dissolved in a solvent.

  On the other hand, in Patent Document 2, a thermoplastic resin material is attached to at least one surface of a fabric base material including a plurality of reinforcing fiber bundles, and then the relative strength of the plurality of reinforcing fiber bundles constituting the fabric base material is determined. By changing the position, it is possible to follow a complex shape with excellent deformability, and a flat plate molded product, a fiber reinforced resin molded product using a reinforced fiber fabric with excellent shape retention, and those The manufacturing method of was disclosed.

Japanese Patent Laid-Open No. 2003-21447 JP 2007-56441 A

In a molding method in which a laminated molding material obtained by laminating a reinforcing fiber fabric disclosed in Patent Document 2 as a molding raw material is heated to a melting temperature and then compressed with a molding die at a solidification temperature, the thermoplastic resin is completely converted into the reinforcing fiber. There is a problem that it is difficult to impregnate, and a sufficient molded product strength cannot be obtained.
In view of the above problems in the prior art, the present invention provides a forming method and a fiber reinforced resin molding which can form a strong molded article into a three-dimensional shape with a high degree of freedom by using a forming raw material. The purpose is to provide goods.

That is, the forming method according to the present invention cuts and laminates a forming raw material in which a resin material mainly composed of a thermoplastic resin is attached to at least one surface of a woven fabric substrate including a plurality of reinforcing fiber bundles. Laminate molding material is placed in the mold and pressed and heated to melt the resin material adhering to the textile substrate containing multiple reinforcing fiber bundles and bond the fibers and the layers of the molding material In the forming method, the step of raising the forming mold composed of the upper mold and the lower mold to be molded to a melting temperature, the preheating process of preheating the laminated molding material and placing it in the molding mold, and the mold The mold is clamped and pressurized, and at least one of the upper and lower molds in the region outside the edge of the laminated molding material placed in the mold near the dividing line between the upper and lower molds is cooled to the solidification temperature of the thermoplastic resin. The process and the process of cooling the mold to the solidification temperature, opening the mold and releasing the mold. It is characterized by having.

By this forming method of the present invention, the molding die is heated to the melting temperature of the thermoplastic resin material to completely impregnate the thermoplastic resin into the reinforcing fibers and strengthened by fiber lamination to obtain sufficient molded product strength. It becomes possible to mold a thermoplastic resin material. In addition, it can be prevented by preheating that the cycle time becomes excessive due to the long heating time.

Further, in the forming process using the molding die composed of the upper die and the lower die, the resin material protrudes from the divided portion of the upper die and the lower die due to the expansion pressure due to the temperature rise. The surface of the resin material of the laminated molding material is melted first, and a part of the melted portion of the surface protrudes from the die joint portion due to thermal expansion from the inside. This protrusion is also called flash, burr, or spew, and the lines generated at the protrusions of the divided parts are called parting lines and flash lines.
If there is no countermeasure even with the forming method of the present invention, if a laminated product of reinforcing fiber and thermoplastic resin molding material is compression molded at the melting temperature, only the thermoplastic resin flows out from the mold dividing surface and the thickness is reduced. Problems can arise.

Therefore, according to the forming method of the present invention, at least one of the upper and lower molds in the region outside the edge of the laminated molding material placed in the mold near the dividing line of the upper and lower molds is set to the solidification temperature of the thermoplastic resin. A step of cooling.

When the thermoplastic resin that protrudes from the portion cooled by the process of cooling at least one of the upper and lower molds to the solidification temperature of the thermoplastic resin is solidified, the protrusion is prevented and the resin outflow can be prevented.

In addition, the forming method of the present invention cuts and laminates a forming raw material in which a resin material mainly composed of a thermoplastic resin is attached to at least one surface of a woven fabric substrate including a plurality of reinforcing fiber bundles. Laminate molding material is placed in the mold and pressed and heated to melt the resin material adhering to the textile substrate containing multiple reinforcing fiber bundles and bond the fibers and the layers of the molding material In the forming method, the step of raising the forming mold composed of the upper mold and the lower mold to be molded to a melting temperature, the preheating process of preheating the laminated molding material and placing it in the molding mold, and the mold The mold is clamped and pressurized, and at least one of the upper and lower molds in the region outside the edge of the laminated molding material placed in the mold near the dividing line between the upper and lower molds is cooled to the solidification temperature of the thermoplastic resin. And a step of cooling the mold to the solidification temperature, opening the mold, and releasing the mold. A step of forming a flat plate-shaped molded product having a flat plate shape, a step of cutting the flat plate-shaped molded product into a predetermined shape, a step of heating a forming mold to a melting temperature, and the flat plate-shaped molded product Preheating process for preheating and placing in the mold, clamping and pressurizing the mold, and upper and lower molds in the region outside the edge of the laminated molding material placed in the mold near the upper and lower mold dividing lines And at least one of them is cooled to the solidification temperature of the thermoplastic resin, and the mold is cooled to the solidification temperature, and the mold is opened and released.

The impregnation of the thermoplastic resin between the reinforcing fibers usually takes about 5 to 30 minutes.

However, by preparing a plate-shaped laminated molded material in advance by the forming method of the present invention, the time can be reduced and the forming cycle time of the forming shape can be shortened.

  The mold is equipped with a product part mold and a heat storage panel on the back of the product part mold, and the product part mold heater and the heat conduction from the heat storage panel raise the mold part temperature of the product part mold to store heat. Due to the presence of the board, the temperature of the product part mold is increased, and the capacity of the product part heater can be reduced.

  The mold can be rapidly cooled by water cooling including air and steam, and the cooling time for cooling the mold to the solidification temperature of the thermoplastic resin material is required to prevent the cycle time from becoming excessively long. Can do. Also, after cooling the mold, water is extracted with air and the mold is started to warm up. By removing water with air, the start of temperature rise can be accelerated, and the molding cycle time can be further reduced. It can be shortened.

  By preheating and pre-molding the laminated molding material and / or flat plate molded article, the resulting material can be placed and placed in the mold easily and efficiently. Further, by preparing a pre-formed product obtained by pre-forming a laminated molded material or a flat plate-formed product, the molding efficiency can be further improved. As a form of the pre-molding, for example, the laminated molding material or the flat laminate molded product is preheated to a shape along the inner shape of the input arrangement portion of the laminated molding material or the flat laminate molded product into the mold, and the drawing process is performed.

  The preheating process is a process of heating with near infrared rays, detecting the temperature with a far infrared temperature sensor, adjusting the intensity of the near infrared rays, and raising the temperature to a predetermined temperature. It can be heated and heated to the center, and the far-infrared sensor can detect the accurate temperature without contact.

  In the preheating process, the laminated molding material is placed and placed in the mold in the process of raising the temperature to the melting temperature, heated with near infrared rays, the temperature is detected with a far infrared temperature sensor, the intensity of near infrared rays is adjusted, and the predetermined temperature is reached. By being the step of raising the temperature, the molecule to be preheated can be heated to the middle core with near infrared rays, and the accurate temperature can be detected in a non-contact manner by the far infrared sensor. Moreover, the laminated molding material in the process of raising the temperature to the melting temperature is placed in a mold that has been heated, so that the time can be efficiently reduced and preheated.

  By lowering the upper die block and pushing up the lower die block to sandwich the laminated molding material or flat plate molded article, the relative speed of mold movement can be improved and the molding cycle time can be further shortened. .

  The fiber reinforced resin molded product produced by the above forming method of the present invention can be applied to various applications because it can be manufactured with high strength, light weight, efficiency and low cost, and also can be shaped with complex shapes. It becomes.

  According to the forming method and the fiber-reinforced resin molded product according to the present invention, a molded product having a high strength can be molded into a three-dimensional shape efficiently with a high degree of freedom in shape using a molding raw material.

(A) It is a conceptual diagram of the shaping | molding raw material used with the forming method of this invention. (B) It is a conceptual diagram of the textile base material which comprises the shaping | molding raw material shown to Fig.1 (a). It is explanatory drawing of the shaping apparatus used with the shaping method of 1st embodiment of this invention. (A) It is explanatory drawing of the type | mold structure used with the forming method of this invention. (B) It is another explanatory drawing of the type | mold structure used with the forming method of this invention. (A) It is a perspective view of the type | mold structure used with the shaping method of this invention. (B) It is another perspective view of the type | mold structure used with the shaping method of this invention. (A) It is explanatory drawing which shows 1 process of the shaping method of 2nd embodiment of this invention. (B) It is explanatory drawing which shows the other process of the shaping method of 2nd embodiment of this invention. (C) It is explanatory drawing which shows the other process of the shaping method of 2nd embodiment of this invention. It is explanatory drawing of the shaping apparatus used with the shaping method of 3rd embodiment of this invention. It is a photograph of the product manufactured in the Example of this invention. It is a photograph of the other product manufactured in the Example of this invention. It is process drawing of the Example of this invention.

  The forming method of the present invention is performed using a forming raw material 1 shown in FIG. As shown in FIG. 1 (a), in the forming raw material 1, a resin material 4 containing a thermoplastic resin as a main component adheres to at least one surface of a woven fabric base 3 including a plurality of reinforcing fiber bundles 2. It becomes.

As shown in FIG. 1B, the fabric base 3 is a bi-directional fabric formed by weaving a plurality of reinforcing fiber bundles 2 aligned in one direction so as to be parallel to each other in two orthogonal directions. The bi-directional woven fabric has the advantage that it is easy to be deformed due to a change in the relative position between the reinforcing fiber bundles 2 and is easily deformed into a three-dimensional shape, and that it is easy to obtain a laminated molding material that is mechanically pseudo-isotropic with a small number of sheets. .
By using the reinforced fiber bundle 2, the mechanical properties of the fiber reinforced resin molded product as the final product can be made high.
The reinforcing fiber bundle 2 may be a carbon fiber bundle, a graphite fiber bundle, a glass fiber bundle, an aramid fiber bundle, or the like, and is preferably a carbon fiber bundle. By using the carbon fiber bundle, the mechanical properties of the fiber reinforced resin molded product as the final product can be improved.

  The resin material 4 adhering to the surface of the woven fabric base 3 is mainly composed of a thermoplastic resin capable of obtaining the action of bonding the layers of the woven fabric base 3. Examples of the thermoplastic resin include polypropylene, acrylic, polyamide, polyethylene terephthalate, polyphenylene sulfide, and the like. By making the resin material 4 a thermoplastic resin as a main component, the handling property in the case of bonding the layers of the fabric base material 3 after laminating the forming raw material 1 and deforming it into a three-dimensional shape is improved. And productivity is improved. The main component is a component having the largest ratio among the components constituting the resin material 4.

Hereinafter, the forming method according to the first embodiment of the present invention will be described in detail with reference to FIG.
First, the forming raw material 1 is laminated, and a laminated molding material 5 preliminarily compression-molded with a preliminary lamination mold (not shown) is preheated with a preheating mold 6.
In the preheating, the laminated molding material 5 placed on the heating plate 8 in the preheating mold 6 is heated by the near infrared radiation device 7 from the upper part with the near infrared rays. The far-infrared temperature sensor (not shown) detects the temperature of the laminated molding material 5, adjusts the intensity of near infrared rays by the near-infrared radiation device 7, and raises the laminated molding material 5 to a predetermined temperature.
On the other hand, the forming die 9 which is a shaping die having a three-dimensional shape is preheated and the temperature is raised to the melting temperature of the forming raw material 1. Next, the laminated molding material 5 is accommodated in a preheated molding die 9, and the laminated molding material 5 is compressed by the molding die 9. As a result, the resin material 4 adhering to the fabric base material 3 is softened, the layers of the laminated molding material 5 are bonded, and the shape is maintained.
Thereafter, the mold 9 is rapidly cooled to the solidification temperature, and the mold is opened and released. The forming raw material 1 is laminated by the above steps and shaped into a three-dimensional shape.
As described above, in the preheating step, the laminated molding material 5 in the process of raising the temperature to the melting temperature is placed in the mold 9 which has been heated and heated by the near infrared radiation device 7 in the near infrared, and the temperature is measured by the far infrared temperature sensor. By detecting the temperature and adjusting the intensity of near infrared rays to raise the temperature to a predetermined temperature, the molecules to be preheated can be heated to the center with the near infrared rays. In addition, the far-infrared sensor can accurately detect the temperature without contact. In addition, the laminated molding material 5 in the process of raising the temperature to the melting temperature is placed in the mold 9 that has been heated, so that the time can be efficiently reduced and preheated.

  The temperature at which the laminated molding material 5 is heated is a temperature at which the resin material 4 is softened to bond the layers of the laminated molding material 5 together. When the laminated molding material 5 is heated while being pressed, the fabric base materials 3 including the plurality of reinforcing fiber bundles 2 constituting the laminated molding material 5 are strongly pressed against each other, and the softened resin materials 4 are opposed to each other. It penetrates between the single yarns of the reinforcing fiber bundles constituting the fabric base material including the reinforcing fiber bundles of the book. Next, when the laminated molding material 5 is cooled, the resin material 4 adheres to the fabric base material including a plurality of opposing reinforcing fiber bundles, and bonds the layers of the laminated molding material 5 together.

  In this way, by deforming the laminated molding material 5 into a three-dimensional shape and bonding the layers, a three-dimensional shaped product having no wrinkles can be manufactured. Further, since this molded body is bonded between the layers of the laminated molding material 5, it has high rigidity and excellent shape retention, and can be handled efficiently.

  The mold 9 includes a product part mold 10 and a heat storage board 11, and raises the mold temperature of the mold 9 by heat conduction from the heater 12 and the heat storage board 11 provided in the product part mold 10. The product part mold 10 is composed of an upper mold 10a and a lower mold 10b, and the upper mold 10a is fitted into the lower mold 10b to perform mold matching, thereby molding the product. The mold 9 includes a cooling water passage 13 for water cooling including air and steam, and the molding die 9 is rapidly cooled by passing water through the cooling water passage 13. The cooling water passage 13 can efficiently extract and lower water by applying air. That is, after the mold temperature of the mold 9 reaches a predetermined cooling temperature, the cooling of the mold 9 is finished by stopping water flow in the cooling water passage 13 and applying air. After taking out, the temperature rise of the mold 9 can be efficiently started again.

In this forming method, at least one of the upper mold 10a and the lower mold 10b in the region outside the edge of the laminated molded material placed and placed in the mold near the dividing line between the upper mold 10a and the lower mold 10b is heated. The cooling means PM is used for cooling to the solidification temperature of the plastic resin. As shown in FIGS. 3A and 3B, the cooling means PM is disposed on the lower mold 10b outside the edge of the laminated molding material 5 placed on the lower mold 10b so as to face only the edge of the upper mold 10a. Arranged as a frame type. The insert piece type PM is formed to have a shape of a mating surface of the upper die 10a and the lower die 10b or an inner shape that matches the outer shape of the laminated molding material 5 placed on the lower die 10b. The upper mold 10a is fitted inside the insert piece mold PM, and the upper mold 10a and the lower mold 10b are mated to form the laminated molding material 5 to be placed on the lower mold 10b.

After the preheating process in which the laminated molding material 5 is preheated and placed in the molding die 9, the upper die 10a and the lower die 10b are matched with each other to mold the product. In the process, the upper mold 10a in the region outside the edge of the laminated molding material placed in the mold near the dividing line between the upper mold 10a and the lower mold 10b at the same time as compression molding by matching the upper mold 10a and the lower mold 10b. And the cooling process which cools the lower mold | type 10b to the solidification temperature of a thermoplastic resin is performed using insert piece type PM. Thus, when the cooling process using the insert piece type PM is not performed, the resin on the surface of the laminated molding material 5 is melted by the expansion pressure due to the temperature rise in the molding process from the divided part of the upper mold 10a and the lower mold 10b. A part of the portion protrudes from the die joint portion to form a burr. However, by performing a cooling process using the insert piece type PM, the melted portion of the resin on the surface of the laminated molding material 5 is cooled and solidified at the die joint portion, which acts as a barrier to prevent the resin from flowing out. Formation is minimized.

4A shows the upper mold 10a, and FIG. 4B shows the lower mold 10b. As shown in the figure, the lower mold 10b has a concave portion PM1 on the upper surface for placing the frame type PM. The concave portion PM1 is formed so as to surround the four sides of the cavity in which the laminated molding material 5 is accommodated. The frame type PM is accommodated in the recess PM1 via the heat insulating layer PM2, and supported on the lower mold 10b by a point contact portion (not shown) with the lower mold 10b. On the other hand, in the state where the upper mold 10a and the lower mold 10b shown in FIG. 4A are combined, a gap is formed between the upper surface portion of the insert piece mold PM and the lower surface of the upper mold 10a, and there is no mutual contact.

As a result, the heat conduction between the upper mold 10a and the lower mold 10b, which is maintained at the preheating temperature of the laminated molding material 5, and the insert piece mold PM is minimized. The cooling area by the insert piece type PM is exclusively placed in the mold near the dividing line of the upper mold 10a and the lower mold 10b around the cavity for housing the laminated molded material 5 when the upper mold 10a and the lower mold 10b are aligned. It becomes the upper mold | type 10a of the area | region outer side of the edge part of the laminated molding material .

Next, the forming method according to the second embodiment of the present invention will be described in detail with reference to FIGS.

In the forming method of the second embodiment, a plurality of square or rectangular forming raw material 1 is used, and each forming raw material 1 is the uppermost forming raw material 1 and the fabric base material 3 is the upper side. Are laminated with the surface of the resin material 4 attached on the lower side and the other side of the fabric base material 3 on the lower side with the surface of the resin material 4 attached on the upper side. The flat plate laminated product 15 is formed by compression molding as in the embodiment.

This second embodiment differs from the forming method of the first embodiment in that the mold 9 forms a flat plate laminated product 15 having a square flat plate shape or a rectangular flat plate shape.

As shown in FIGS. 5B and 5C, in the second embodiment, after the preheating step in which the laminated molding material 14 is preheated and placed in the molding die 9, the upper die 10a and the lower die 10b are moved to each other. The product is molded by matching the molds. In the process of clamping and pressurizing the mold, compression molding is performed by matching the upper mold 10a and the lower mold 10b, and at the same time , the edge of the laminated molding material placed in the mold near the dividing line of the upper mold 10a and the lower mold 10b. A cooling step for cooling the upper die 10a and the lower die 10b in the outer region to the solidification temperature of the thermoplastic resin is performed using the insert piece type PM.

Next, the forming method according to the third embodiment of the present invention will be described.
In the forming method of the third embodiment, as shown in FIG. 6, the laminated molding material 14 or the flat plate lamination is formed in a shape that conforms to the inner shape of the molding die 9 of the input portion of the laminated molding material 14 or the flat laminated molding product 15. It differs from the first embodiment and the second embodiment in that the molded article 15 is preheated and drawn as a preform. In the forming method according to the third embodiment, the laminated molding material 14 or the flat laminate molded article 15 can be easily and efficiently placed and placed in the molding die 9.

Next, the forming method according to the fourth embodiment of the present invention will be described in detail with reference to FIGS.

The forming method of the fourth embodiment differs from the forming method of the first embodiment in that the final product is formed using the flat plate molded product 15.

First, the flat laminated molded product 15 is preheated by the preheating mold 6 before being stored in the mold 9.

In the preliminary heating, the flat plate molded product 15 is heated by near infrared rays radiated from the near infrared radiation device 7 from above, and the temperature of the flat plate molded product 15 is detected by a far infrared temperature sensor. The intensity of near-infrared light is adjusted to raise the temperature of the flat plate molded product 15 to a predetermined temperature.

Also in the fourth embodiment, after the preheating step in which the flat plate molded product 15 is preheated and placed in the mold 9, the upper mold 10 a and the lower mold 10 b are mated to perform product molding. . In the process of clamping and pressurizing the mold, compression molding is performed by matching the upper mold 10a and the lower mold 10b, and at the same time , the edge of the laminated molding material placed in the mold near the dividing line of the upper mold 10a and the lower mold 10b. A cooling step for cooling the upper die 10a and the lower die 10b in the outer region to the solidification temperature of the thermoplastic resin is performed using the insert piece type PM.

  The intensity of the near infrared light described above is adjusted by a continuous drop of the conduction voltage to the near infrared radiation device 7. When the heating by near infrared rays and the stop thereof are repeated with ON / OFF of the conduction voltage, the pulsation of the temperature change of the heating target is largely unstable. On the other hand, by adjusting the intensity of near infrared rays not by ON / OFF of the voltage but by the continuous voltage drop, the near infrared rays are continuously irradiated and no pulsation occurs in the temperature change. Therefore, the temperature of the object to be heated can be stabilized efficiently at the set temperature.

A plurality of 100 mm × 100 mm square forming raw material 1 having a resin material 4 mainly composed of polyphenylene sulfide resin (PPS) adhering to the surface was prepared on one surface of the bidirectional woven fabric base 3. . Each forming raw material 1 had a fiber axis direction of approximately 0 ° and 90 ° when the directions of the square sides were 0 ° and 90 °, respectively.
A laminated molding material 14 is obtained by laminating each of the raw molding materials 1 with the uppermost reinforcing fiber woven fabric having the resin material 4 attached to the lower side and the other side having the resin material 4 attached to the upper side. It was.

The laminated molding material 14 is placed on the heating plate 8, the laminated molding material 14 is heated by the near infrared radiation device 7 from above, and the temperature of the laminated molding material 14 is detected by a far infrared temperature sensor. The intensity of near infrared rays by the infrared radiation device 7 was adjusted, and the laminated molding material 14 was heated and preheated.
The intensity of the near infrared ray was adjusted by a continuous drop of the conduction voltage to the near infrared radiation device 7.

On the other hand, it consists of a product part mold 10 and a heat storage board 11, and preheats by raising the mold temperature of the mold 9 by heat conduction from the heater 12 and the heat storage board 11 provided in the product part mold 10, A preheated laminated molding material 14 is accommodated in the preheated molding die 9, and the upper die 10a in the region outside the edge of the laminated molding material placed in the molding die in the vicinity of the dividing line between the upper die 10a and the lower die 10b, The lower mold 10b was placed in the solidification temperature of the thermoplastic resin and cooled using the piece mold PM.

Next, it was deformed into a flat plate laminated product shape provided by the mold 9 while applying pressure. Thereafter, the mold 9 was rapidly cooled by passing water through the cooling water passage 13, and by applying air to the cooling water passage 13, water was efficiently extracted and lowered. Thereby, a flat plate molded article 15 solidified by cooling was obtained.

Table 1 shows the temperature, pressure, and required time in each of the above steps.

Others were the same as in Example 1, using a 100 mm × 100 mm square molding raw material 1 having a resin material 4 having an acrylic resin as a main component adhered to the surface. Formed.
Table 2 shows the temperature, pressure, and required time in each process.

The flat plate molded product 15 is placed on the heating platen 8, the flat plate molded product 15 is heated by near infrared radiation from the upper part by the near infrared radiation device 7, and the temperature of the flat plate molded product 15 is detected by a far infrared temperature sensor. Then, the intensity of near infrared rays by the near infrared radiation device 7 was adjusted, and the flat plate molded article 15 was heated to a predetermined temperature and preheated. The intensity of the near infrared ray was adjusted by a continuous drop of the conduction voltage to the near infrared radiation device 7.
Further, the flat plate molded product 15 was drawn into a shape along the inner shape of the product part mold 10 including the upper mold 16 and the lower mold 17.

On the other hand, the upper mold 16 and the lower mold 17 were preheated by increasing the mold temperature by heat conduction from the heater 12 and the heat storage board 11 provided in the product mold 10 including the upper mold 16 and the lower mold 17. . The preheated flat plate molded product 15 was accommodated inside the preheated upper die 16 and lower die 17. Further, the upper mold 10a and the lower mold 10b in the region outside the edge of the laminated molding material placed in the mold near the dividing line between the upper mold 10a and the lower mold 10b are placed at the solidification temperature of the thermoplastic resin, and the piece type PM is used. And cooled. Next, the flat plate molded product 15 was sandwiched between the central block 16 a of the upper mold 16 and the central block 17 a of the lower mold 17. The flat plate molded article 15 sandwiched between the central block 16a of the upper mold 16 and the central block 17a of the lower mold 17 was moved to the concave mold 19 to deform the flat laminated mold article 15 by drawing. Further, the flat plate molded product 15 that was drawn and deformed was compression molded. Thereafter, the mold 9 is rapidly cooled by passing water through the cooling water passage 13, and further, air is efficiently extracted by applying air to the cooling water passage 13, and solidified by cooling. I got the product shown in

A similar process was performed using a square forming raw material 1 having a size of 100 mm × 100 mm in which a resin material 4 mainly composed of an acrylic resin adhered to the surface. The obtained product is shown in FIG.
As shown in FIGS. 7 and 8, each product was a three-dimensional dish-shaped product having a good surface property.
FIG. 9 shows each process and use / equipment and use / type of Example 3 and the required time in each process.
As shown in the figure, 11.5 minutes when the resin material 4 mainly composed of acrylic resin is used, and 13.5 minutes when the resin material 4 mainly composed of polyphenylene sulfide resin (PPS) is used. Manufacture with cycle time became possible.

DESCRIPTION OF SYMBOLS 1 ... Molding raw material, 2 ... Reinforcement fiber bundle, 3 ... Textile base material, 4 ... Resin material, 5,14 ... Laminated molding material, 6 ... Preheating type, DESCRIPTION OF SYMBOLS 7 ... Near-infrared radiation device, 9 ... Mold, 10 ... Product part type, 11 ... Heat storage board, 13 ... Cooling water flow path, 12 ... Heater, 15 ... Plate laminated molded product, 17 ... Lower mold, 17a ... Lower mold center block, 16 ... Upper mold, 16a ... Upper mold center block, 18 ... Counter mold, 19 ... concave type.

Claims (9)

A laminated molding material obtained by cutting and laminating a molding raw material having a resin material mainly composed of a thermoplastic resin attached to at least one surface of a woven fabric substrate including a plurality of reinforcing fiber bundles is placed in a molding die. In the forming method in which pressure is applied and heated to melt the resin material adhering to the textile substrate including a plurality of reinforcing fiber bundles to bond the fibers and the layers of the forming raw material, A step of raising a mold composed of an upper mold and a lower mold to a melting temperature, a preheating process of preheating and placing the laminated molding material into the mold, a process of clamping and pressurizing the mold, and upper and lower A step of cooling at least one of the upper and lower molds in the region outside the edge of the laminated molding material placed in the mold in the vicinity of the mold dividing line and cooling the mold to the solidification temperature; And then forming and releasing the mold. Law.

A laminated molding material obtained by cutting and laminating a molding raw material having a resin material mainly composed of a thermoplastic resin attached to at least one surface of a woven fabric substrate including a plurality of reinforcing fiber bundles is placed in a molding die. In the forming method in which pressure is applied and heated to melt the resin material adhering to the textile substrate including a plurality of reinforcing fiber bundles to bond the fibers and the layers of the forming raw material, A step of raising a mold composed of an upper mold and a lower mold to a melting temperature, a preheating process of preheating and placing the laminated molding material into the mold, a process of clamping and pressurizing the mold, and upper and lower A step of cooling at least one of the upper and lower molds in the region outside the edge of the laminated molding material placed in the mold in the vicinity of the mold dividing line and cooling the mold to the solidification temperature; And then opening the mold and releasing the mold, A step of forming, a step of cutting the flat plate molded product into a predetermined shape, a step of raising the shaping mold to a melting temperature, and preheating the flat plate molded product to be placed in the mold At least one of the preheating step, the step of clamping and pressurizing the mold, and the upper and lower molds in the region outside the edge of the laminated molding material placed in the mold near the dividing line of the upper and lower molds. A forming method comprising: a step of cooling to a solidification temperature of a resin; and a step of cooling the mold to the solidification temperature to open and release the mold.

The mold has a product part mold and a heat storage panel on the back of the product part mold. The product part heater and the heat conduction from the heat storage panel increase the temperature of the product part mold. The shaping method according to any one of claims 1 and 2.

4. The mold according to claim 1, wherein the cooling of the mold is water-cooling including air and steam, and after the mold is cooled, water is extracted with air and the temperature of the mold is increased. The forming method according to one.

The forming method according to any one of claims 1 to 4, wherein the laminated molding material and / or the flat plate molded article is preheated and pre-molded and then placed in a molding die.

The preheating step is a step of heating with a near infrared ray, detecting a temperature with a far infrared ray temperature sensor, adjusting the intensity of the near infrared ray, and raising the temperature to a predetermined temperature. The shaping method according to any one of the above.

In the preheating process, the laminated molding material is placed and placed in the mold in the process of raising the temperature to the melting temperature, heated with near infrared rays, the temperature is detected with a far infrared temperature sensor, the intensity of near infrared rays is adjusted, and the predetermined temperature is reached. The forming method according to any one of claims 1 to 3, wherein the forming method is a step of raising the temperature.

A forming mold used in the forming method according to any one of claims 1 to 7, wherein the forming mold includes an upper mold and a lower mold for shaping, and a dividing line between upper and lower molds. Cooling means for cooling at least one of the upper and lower molds in the outer region of the edge of the laminated molding material placed and placed in the mold in the vicinity , to the solidification temperature of the thermoplastic resin, and means for clamping and pressurizing the mold And a means for opening and releasing the mold by cooling the forming mold to a solidification temperature, and the cooling means is an insert piece having an inner shape that matches the shape of the die mating surface of the upper mold and the lower mold. A shaped mold characterized by

A forming mold used in the forming method according to any one of claims 1 to 7, wherein the forming mold includes an upper mold and a lower mold for shaping, and a dividing line between upper and lower molds. Cooling means for cooling at least one of the upper and lower molds in the outer region of the edge of the laminated molding material placed and placed in the mold in the vicinity, to the solidification temperature of the thermoplastic resin, and means for clamping and pressurizing the mold And a means for opening and releasing the mold by cooling the mold to a solidification temperature, and the cooling means is a slot having an inner shape that matches the outer shape of the laminated molding material placed on the mold. Forming mold with.