JP5909062B2 - 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. And a shaped mold.

  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 high degree of freedom of shape using a molding raw material. The object is to provide products and shaped molds.

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 mold composed of the upper mold and the lower mold to the melting temperature, the preheating process of preheating the laminated molded material and placing it in the mold, and clamping the mold A step of pressing, a step of cooling the mold to a solidification temperature and opening the mold, and releasing the mold, wherein the upper mold has a vertical pressing surface in a direction coinciding with the mold clamping direction, and a mold clamping direction. It has a transverse push face in the intersecting direction.
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 mold composed of the upper mold and the lower mold, the resin material protrudes from the divided part of the upper mold and the lower mold 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 by 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, the upper mold has a vertical pressing surface in a direction coinciding with the clamping direction and a lateral pressing surface in a direction intersecting the clamping direction on the outer surface.
In this way, the upper die has a vertical pressing surface and a horizontal pressing surface, so that resin flow can be reliably prevented at the vertical pressing surface part and the horizontal pressing surface part in the molding process, and the resin pressure is not released, thus generating burrs. The strength of the resulting molded product can be increased.

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 to be performed, a step of raising a forming die composed of an upper die and a lower die to be shaped to a melting temperature, a preheating step of preheating the laminated molding material and placing it in the molding die, and a molding die A step of clamping and pressurizing the mold, a step of cooling the mold to a solidification temperature, opening the mold and releasing the mold, and molding a flat plate-shaped flat laminate product, A step of cutting into a shape, a step of raising a shaping mold to a melting temperature, A preheating step of preheating and placing the laminated molded product into the mold, a step of clamping and pressurizing the mold, and a step of cooling the mold to a solidification temperature to open the mold and releasing the mold, The upper mold has a vertical pressing surface in a direction coinciding with the clamping direction and a lateral pressing surface in a direction intersecting the clamping direction on the outer surface.
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.

  In the above forming method according to the present invention, the upper die is a first vertical pressing surface, a horizontal pressing surface continuous with the first vertical pressing surface, and a second vertical pressing surface continuous with the horizontal pressing surface. And can be made.

Further, the above forming method of the present invention can include a step of cooling at least one of the upper and lower molds in the vicinity of the upper and lower mold dividing lines to the solidification temperature of the thermoplastic resin.
The thermoplastic resin protruding from the portion cooled by the step of cooling at least one of the upper and lower molds to the solidification temperature of the thermoplastic resin is solidified, thereby further preventing the resin from protruding and preventing the resin from flowing out. be able to.

  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.

  The forming mold according to the present invention is a mold composed of an upper mold and a lower mold for shaping, a means for clamping and pressurizing the mold, and the mold is cooled to a solidification temperature to open and release the mold. And a first vertical pressing surface provided on the outer surface with a predetermined length in the clamping direction, a horizontal pressing surface continuous with the first vertical pressing surface, and the horizontal pressing surface. It is characterized by comprising a second vertical pressing face that is continuous and has a predetermined length in the mold clamping direction.

  A cooling means for cooling at least one of the upper and lower molds in the vicinity of the dividing line of the upper and lower molds can be provided, and the cooling means can be used as a frame.

  According to the forming method, the fiber-reinforced resin molded product, and the forming mold according to the present invention, a strong molded product is shaped into a three-dimensional shape with a high degree of freedom in shape using a molding raw material. Can do.

(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 and the products are molded, so that the product is molded. 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.

  As shown in FIGS. 3A and 3B and FIGS. 4A and 4B, the upper mold 10a has a first vertical pressing surface 10a-1 provided on the outer surface thereof at a predetermined length in the mold clamping direction, A horizontal pressing surface 10a-2 continuous with the first vertical pressing surface 10a-1, and a second vertical pressing surface 10a-3 continuous with the horizontal pressing surface 10a-2 and provided at a predetermined length in the mold clamping direction. And have.

  Further, the molding die 9 has cooling means PM arranged as a frame piece on the lower die 10b outside the edge of the laminated molding material 5 placed on the lower die 10b so as to face only the edge of the upper die 10a. . 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 matched with each other, whereby the laminated molding material 5 placed on the lower mold 10b is molded.

  In the process in which the upper mold 10a and the lower mold 10b are mold-matched, the second vertical pressing face 10a-3, the horizontal pressing face 10a-2, the first vertical cutting face from the die-matching surface of the upper mold 10a and the lower mold 10b. Outflow pressure that flows out to the outside in the order of the push-cut surfaces 10a-1 is applied to the molten resin. However, by having the horizontal push face 10a-2 between the first vertical push face 10a-1 and the second vertical push face 10a-3, the resin outflow is prevented at the horizontal push face 10a-2 portion.

  Further, there is a cooling step of cooling the upper mold 10a and the lower mold 10b in the vicinity of the dividing line of the upper mold 10a and the lower mold 10b to the solidification temperature of the thermoplastic resin simultaneously with the compression molding by the mold matching of the upper mold 10a and the lower mold 10b. This is done using a slotted PM. By performing the cooling process using the insert piece type PM in this way, the molten portion of the resin on the surface of the laminated molding material 5 is cooled and solidified at the die joint portion. As a result, resin outflow is suppressed and the formation of burrs is minimized.

The lower mold 10b has a concave part PM1 for placing the insert piece mold PM on the upper surface thereof. 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 concave portion PM1 via the heat insulating layer PM2, and supported on the lower die 10b by a point contact portion (not shown) with the lower die 10b. On the other hand, in the state where the upper mold 10a and the lower mold 10b shown in FIG. 4A are matched, 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 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 the upper mold 10a and the upper mold 10a in the vicinity of the dividing line of the upper mold 10a and the lower mold 10b around the cavity for housing the laminated molding material 5 when the upper mold 10a and the lower mold 10b are matched. Become.

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. The surface to which the resin material 4 is attached is on the lower side. Other than that, the fabric base 3 is placed on the lower side and the surface to which the resin material 4 is attached is placed on the upper side. The laminated laminated molding material 14 is compression-molded in the same manner as in the first embodiment to obtain a flat plate laminated molded article 15.
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. 5 (b) and 5 (c), in the second embodiment as well, the upper mold 10a and the lower mold 10b are separated after the preheating step in which the laminated molding material 14 is preheated and placed in the molding die 9. The product is molded by matching the molds. In the process of clamping and pressurizing the mold, the second vertical pressing surface 10a-3, the lateral pressing surface 10a-2, and the first vertical pressing surface 10a-1 from the die mating surfaces of the upper die 10a and the lower die 10b. The outflow pressure flowing out to the outside in this order is applied to the molten resin. However, the resin outflow is prevented at the first vertical pressing surface 10a-1 which is continuous with the second vertical pressing surface 10a-3. Further, there is a cooling step of cooling the upper mold 10a and the lower mold 10b in the vicinity of the dividing line of the upper mold 10a and the lower mold 10b to the solidification temperature of the thermoplastic resin simultaneously with the compression molding by the mold matching of the upper mold 10a and the lower mold 10b. This is done using a slotted 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 laminated product 15 is heated by near infrared rays emitted from the near infrared radiation device 7 from above. The far-infrared temperature sensor detects the temperature of the flat laminate product 15 and adjusts the intensity of near infrared light by the near infrared radiation device 7 to raise the temperature of the flat laminate 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 product is molded by matching the upper mold 10a and the lower mold 10b. . In the process of clamping and pressurizing the mold, the upper mold 10a and the lower mold 10b are thermoplastically bonded to the upper mold 10a and the lower mold 10b at the same time as the compression molding by the mold matching of the upper mold 10a and the lower mold 10b. A cooling step of cooling to the solidification temperature of the 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.

On one surface of the bi-directional woven fabric base 3, a plurality of 100 mm × 100 mm square forming raw material 1 having a resin material 4 mainly composed of polyphenylene sulfide resin (PPS) adhered to the surface was prepared. . 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 was placed on the heating platen 8, and the laminated molding material 14 was heated by near infrared radiation from the upper part by the near infrared radiation device 7. The temperature of the laminated molding material 14 was detected by a far infrared temperature sensor, the intensity of the near infrared rays by the near 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 preheated 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. The preheated layered molding material 14 is accommodated in the preheated mold 9, and the upper mold 10a and the lower mold 10b in the vicinity of the dividing line of the upper mold 10a and the lower mold 10b are placed in the solidification temperature of the thermoplastic resin, and the piece type PM. Was used to cool. Next, it was deformed into a flat plate laminated product shape provided by the mold 9 while applying pressure. Thereafter, the mold 9 was quenched by passing water through the cooling water passage 13. Furthermore, by applying air to the cooling water passage 13, water was efficiently extracted and lowered, and a flat plate molded product 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 was placed on the hot platen 8, and the flat plate molded product 15 was heated by near infrared radiation device 7 from the upper part with near infrared rays. The far-infrared temperature sensor senses the temperature of the flat plate molded product 15, adjusts the intensity of near infrared rays by the near infrared radiation device 7, raises the flat plate molded product 15 to a predetermined temperature, and preheats it. 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 laminated 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, preheating was performed by raising the mold temperature of the upper mold 16 and the lower mold 17 by heat conduction from the heater 12 and the heat storage board 11 provided in the product part 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. Furthermore, the upper mold 10a and the lower mold 10b in the region near the dividing line of the upper mold 10a and the lower mold 10b were placed in the solidification temperature of the thermoplastic resin and cooled using the piece mold PM. Next, the flat plate laminate 15 is sandwiched between the central block 16a of the upper mold 16 and the central block 17a of the lower mold 17, and is sandwiched between the central block 16a of the upper mold 16 and the central block 17a of the lower mold 17. The flat plate molded product 15 was moved to the concave mold 19 and the flat plate molded product 15 was drawn and deformed. Further, the flat-plate laminated molded product 15 deformed by drawing was compression molded. Thereafter, the mold 9 was quenched by passing water through the cooling water passage 13. Furthermore, by applying air to the cooling water passage 13, water was efficiently extracted and solidified by cooling, and the product shown in FIG. 7 was obtained.

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 (3)

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 the resin material adhering to the woven fabric base material including a plurality of reinforcing fiber bundles is pressurized and heated to bond the fibers and the layers of the forming raw material, a step of heating the mold comprising a lower mold to melt temperature, a preheating step of introducing placed into the casting mold preheated to laminate molding material, a step of pressing and clamping the mold, the heat of the mold And a step of opening and releasing the mold after cooling to the solidification temperature of the plastic resin, and the step of clamping and pressurizing the molding mold in the region near the dividing line of the upper and lower molds, At least one of the upper and lower molds in the outer region of the edge is cooled to the solidification temperature of the thermoplastic resin. And the upper die has a vertical pressing surface in a direction coinciding with the clamping direction and a lateral pressing surface in a direction intersecting with the clamping direction on the outer surface. . 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 the resin material adhering to the woven fabric base material including a plurality of reinforcing fiber bundles is pressurized and heated to bond the fibers and the layers of the forming raw material, a step of heating the mold comprising a lower mold to melt temperature, a preheating step of introducing placed into the casting mold preheated to laminate molding material, a step of pressing and clamping the mold, the heat of the mold A step of opening and releasing the mold after cooling to the solidification temperature of the plastic resin, a step of forming a flat plate-shaped flat laminate product, a step of cutting the flat plate laminate product into a predetermined shape, and an upper die And a step of raising the temperature of the mold composed of the lower mold and the lower mold to the melting temperature, and the flat plate lamination molding The has a preheating step of introducing arranged to preheat the mold, a step of pressing and clamping the mold, and a step of releasing the mold is opened to cool the mold to solidification temperature of the thermoplastic resin The thermoplastic resin is solidified in 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 dividing line of the upper and lower molds in the process of clamping and pressurizing the mold. The forming is characterized in that the step of cooling to a temperature is performed, and the upper die has a longitudinally cut surface in a direction that coincides with the clamping direction and a laterally stamped surface in a direction that intersects the clamping direction on the outer surface. Shape method.
Claims wherein the upper die and a first vertical press-cutting surface, and the lateral push cutting surface continuous with the first vertical push cutting surface thereof; and a second vertical push cutting surface continuous with the lateral push cutter surface The shaping method according to claim 1 or 2.