Shaping device and shaping method

Abstract

To suppress defects that cause wrinkles (crinkles) in the laminate when the laminate is formed along the forming die.SOLUTION: Encapsulation equipment 100 has a lower die 10, an upper die 20 that is pressed against the lower die 10 to install the laminate 200 along the surface profile of the lower die 10, a force-generating mechanism 40 that generates a force to press the upper die 20 toward the lower die 10, and a control unit that controls the force-generating mechanism 40. The upper mold 20 has a plurality of shaping parts 21-29 arranged along the longitudinal direction LD, and the force generating mechanism 40 has a plurality of force generating sections that are connected to the plurality of shaping parts 21-29 and generate a force to press the shaping parts 21-29 toward the lower mold 10, and the control unit controls the plurality of force generators to press a pair of shaping parts positioned adjacent to each other along the longitudinal direction LD toward the lower die 10 at different times.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present disclosure relates to a shaping device and a shaping method for shaping a laminate formed by stacking a plurality of sheet materials containing reinforcing fibers. [Background technology]

[0002] Structural members of aircraft and the like have any cross-sectional shape, and a method for manufacturing them is known in which a laminate formed by stacking a plurality of sheet materials containing reinforcing fibers is pressed against a shaping mold to form the desired shape (see, for example, Patent Document 1). Patent Document 1 discloses that the laminate is placed in the shaping mold and pressure is applied by a bladder to form the laminate along the shaping mold. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5278790 Summary of the Invention [Problem to be solved by the invention]

[0004] When shaping the laminate along the shaping mold, wrinkles may occur in areas where the shape of the shaping mold changes significantly, etc. Wrinkles are particularly likely to occur when the shaping mold has a curved shape with curvature along the longitudinal direction and a curved portion including a concave or convex shape along the width direction perpendicular to the longitudinal direction.

[0005] However, when pressure is applied by a bladder as disclosed in Patent Document 1, the areas to be preferentially shaped and the timing of shaping are predetermined depending on the positional relationship between the bladder and the shaping mold. Therefore, it is difficult to appropriately adjust the areas to be preferentially shaped and the timing of shaping, such as pressing areas that are prone to wrinkles against the shaping mold before other areas.

[0006] The present disclosure has been made in consideration of the above circumstances, and aims to provide a shaping device and a shaping method that can suppress the problem of wrinkles occurring in the laminate when the laminate is shaped along a shaping mold. [Means for solving the problem]

[0007] A shaping device according to one embodiment of the present disclosure is a shaping device that shapes a laminate formed by stacking a plurality of sheet materials including reinforcing fibers, and includes: a first shaping mold having a curved surface that extends along the longitudinal direction and includes at least one of a concave shape or a convex shape along the width direction; a second shaping mold that shapes the laminate to conform to the surface shape of the first shaping mold by pressing it against the first shaping mold; a biasing force generating mechanism that generates a biasing force that presses the second shaping mold toward the first shaping mold; and a control unit that controls the biasing force generating mechanism, wherein the second shaping mold has a plurality of shaping parts arranged along the longitudinal direction, and the biasing force generating mechanism has a plurality of biasing force generating parts that are connected to the plurality of shaping parts and generate a biasing force that presses the shaping parts toward the first shaping mold, and the control unit controls the plurality of biasing force generating parts so that a pair of the shaping parts arranged adjacent to each other along the longitudinal direction are pressed against the first shaping mold at different times.

[0008] A shaping method according to one embodiment of the present disclosure is a shaping method for shaping a laminate formed by stacking a plurality of sheet materials containing reinforcing fibers, and includes a fixing step of fixing one end of the laminate to a first shaping mold having a curved surface extending along the longitudinal direction and including at least one of a concave shape or a convex shape along the width direction, and a shaping step of shaping the laminate to conform to the surface shape of the first shaping mold by pressing a second shaping mold having a plurality of shaping portions arranged along the longitudinal direction against the first shaping mold, wherein the shaping step presses a pair of the shaping portions arranged adjacent to each other along the longitudinal direction against the first shaping mold at different times. [Effects of the Invention]

[0009] According to the present disclosure, it is possible to provide a shaping device and a shaping method that can suppress the problem of wrinkles occurring in a laminate when the laminate is shaped along a shaping mold. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a lower mold and a laminate according to a first embodiment of the present disclosure, illustrating the state before the laminate is shaped. [Figure 2] FIG. 2 is a perspective view showing a lower mold and a laminate according to the first embodiment of the present disclosure, illustrating the state after the laminate has been shaped. [Figure 3] FIG. 1 is a cross-sectional view showing a shaping device according to a first embodiment of the present disclosure, illustrating a state before an upper mold starts to move toward a lower mold. [Figure 4] FIG. 4 is a right side view of the shaping device shown in FIG. 3, showing a state before the upper mold starts to move toward the lower mold. [Figure 5] FIG. 2 is a block diagram showing a control configuration of the shaping device according to the first embodiment of the present disclosure. [Figure 6] 1 is a flowchart showing a method for forming a composite material using a forming device. [Figure 7] 7 is a flowchart of the second shaping step shown in FIG. 6. [Figure 8] FIG. 7 is a cross-sectional view showing the shaping device in the laminating step of FIG. 6. [Figure 9] FIG. 9 is a partial enlarged view of part B in FIG. 8. [Figure 10] FIG. 7 is a cross-sectional view showing the shaping device in the second shaping step of FIG. 6, showing a state in which the upper mold is moving toward the lower mold. [Figure 11] FIG. 11 is a right side view of the shaping device shown in FIG. 10, showing a state in which the upper mold is moving toward the lower mold. [Figure 12] FIG. 7 is a cross-sectional view showing the shaping device in the second shaping step of FIG. 6, showing a state where the upper mold has stopped after completing movement toward the lower mold. [Figure 13] FIG. 12 is a right side view of the shaping device shown in FIG. 11, showing a state in which the movement of the upper mold toward the lower mold has been completed. [Figure 14]FIG. 10 is a cross-sectional view showing a shaping device according to a second embodiment of the present disclosure, illustrating a state before an upper mold starts to move toward a lower mold. [Figure 15] FIG. 10 is a cross-sectional view showing a shaping device according to a second embodiment of the present disclosure, showing a state in which an upper mold is moving toward a lower mold. [Figure 16] FIG. 10 is a cross-sectional view showing a shaping device according to a second embodiment of the present disclosure, showing a state in which movement of the upper mold toward the lower mold has been completed. DETAILED DESCRIPTION OF THE INVENTION

[0011] [First embodiment] Hereinafter, a shaping device 100 according to a first embodiment of the present disclosure and a shaping method using the same will be described with reference to the drawings. FIG. 1 is a perspective view showing a lower mold 10 and a laminate 200 according to this embodiment, showing a state before shaping the laminate 200. FIG. 2 is a perspective view showing a lower mold 10 and a laminate 200 according to this embodiment, showing a state before shaping the laminate 200. After Indicates the status.

[0012] The shaping device 100 of this embodiment is a device that shapes a laminate 200 made by stacking a plurality of sheet materials along the surface shapes of a lower mold (first shaping mold) 10 and an upper mold (second shaping mold) 20. As shown in Fig. 1, the laminate 200 before shaping is made by flatly stacking a plurality of sheet-like layers of composite material.

[0013] In this embodiment, the laminate 200 is formed by stacking a plurality of reinforcing fiber sheets (dry sheets) that do not contain a matrix resin and forming them into a flat shape. When using reinforcing fiber sheets that do not contain a matrix resin, the laminate 200 is shaped to fit the surface shapes of the lower mold 10 and the upper mold 20, and is placed in a mold (not shown). A resin transfer molding (RTM) method is used in which a resin material is injected into the mold to impregnate the reinforcing fibers and form the laminate. The reinforcing fibers contained in the reinforcing fiber sheets are, for example, carbon fiber, glass fiber, aramid fiber, etc.

[0014] As described above, in this embodiment, a plurality of sheet-shaped reinforcing fiber sheets that do not contain a matrix resin are used as the laminate 200, but other embodiments may be used. For example, the laminate 200 may be one in which a plurality of reinforcing fiber sheets that contain a matrix resin are stacked.

[0015] The matrix resin contained in the reinforcing fiber sheet can be a thermosetting resin or a thermoplastic resin. Examples of thermosetting matrix resins include epoxy resin, unsaturated polyester, vinyl ester, phenol, cyanate ester, and polyimide.

[0016] Examples of thermoplastic matrix resins include polyether ether ketone (PEEK), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), nylon 6 (PA6), nylon 66 (PA66), polyphenylene sulfide (PPS), polyetherimide (PEI), and polyether ketone ketone (PEKK).

[0017] When a thermoplastic resin is used as the matrix resin, the shaping device 100 is equipped with a heating mechanism (not shown) capable of heating the thermoplastic resin contained in the laminate 200 to a temperature equal to or higher than the softening temperature. By heating the thermoplastic resin to a temperature equal to or higher than the softening temperature using the heating mechanism, the laminate 200 containing the thermoplastic resin can be shaped to conform to the surface shapes of the lower mold 10 and the upper mold 20.

[0018] Details of the shaping device 100 according to this embodiment will be described with reference to the drawings. FIG. 3 is a cross-sectional view showing the shaping device 100 according to this embodiment, showing the state before the upper mold 20 starts to move toward the lower mold 10. FIG. 4 is a right side view of the shaping device shown in FIG. 3, showing the state before the upper mold starts to move toward the lower mold. FIG. 5 is a block diagram showing the control configuration of the shaping device 100 according to this embodiment. As shown in FIGS. 3 to 5, the shaping device 100 according to this embodiment includes the lower mold 10, the upper mold 20, the upper mold (third shaping mold) 30, a biasing force generating mechanism 40, and a control unit 50.

[0019] The shaping apparatus 100 shown in Figures 3 and 4 is arranged in a three-dimensional space. The X-axis, Y-axis, and Z-axis shown in Figures 3 and 4 are axes that intersect with each other in the three-dimensional space. The X-axis is an axis that extends along the installation surface S on which the lower mold 10 is installed, and the Z-axis is an axis that extends in a direction perpendicular to the installation surface S on which the lower mold 10 is installed. The Y-axis is an axis that is perpendicular to both the X-axis and the Z-axis, and extends along the depth direction of the paper in Figure 3.

[0020] The lower mold 10 is a block-shaped mold having a surface shape for shaping the laminate 200, and is formed of, for example, a metal material. The surface shape for shaping the laminate 200 of the lower mold 10 includes an upper surface (first shaping surface) 11, a side surface (second shaping surface) 12, a convex surface (curved surface) 13, a concave surface 14 (curved surface), and a bottom surface 15. Fig. 3 is a cross-sectional view taken along the arrow AA in Fig. 4, showing a cross section of the lower mold 10 near the center in the longitudinal direction LD along the Y axis.

[0021] As shown in Fig. 3, the top surface 11 of the lower mold 10 is a surface that extends flatly along the X-axis. The side surface 12 of the lower mold 10 is a surface that extends flatly along the Z-axis. The bottom surface 15 of the lower mold 10 is a surface that extends flatly in a direction intersecting the X-axis.

[0022] Convex surface 13 is a surface connecting top surface 11 and side surface 12, and has an arc shape in which the normal direction of the surface gradually changes from a surface along the X axis to a surface along the Z axis as it approaches side surface 12 from top surface 11 along the X axis. Convex surface 13 is a portion that includes a convex shape along the width direction WD that is parallel to the X axis.

[0023] The concave surface 14 is a surface connecting the side surface 12 and the bottom surface 15, and has an arc shape in which the normal direction of the surface gradually changes from a surface along the Z axis to a surface along the X axis and then to a surface intersecting the X axis as it approaches the bottom surface 15 from the side surface 12 along the Z axis. The concave surface 14 is a portion that includes a concave shape along the width direction WD.

[0024] 3, the laminate 200 has a first end region 200a and a second end region 200b along the width direction WD. The second end region 200b of the laminate 200 is fixed to the lower mold 10. The second end region 200b of the laminate 200 is fixed to a predetermined position on the upper surface 11 of the lower mold 10.

[0025] The shape of the lower mold 10 shown in FIG. 3 may be other. For example, the upper surface 11 may be a surface extending in a direction different from the X-axis, or may be a non-flat surface. The side surface 12 may be a surface extending in a direction different from the Z-axis. The convex surface 13 may be any convex shape other than an arc shape. The concave surface 14 may be any concave shape other than an arc shape. The bottom surface 15 may be a surface extending in a direction parallel to the X-axis or in a direction inclined downward from the X-axis. The lower mold 10 may have any shape including at least one of a concave shape or a convex shape along the width direction WD.

[0026] The upper mold 20 is a block-shaped mold that presses the laminate 200, whose second end region 200b is fixed to the lower mold 10, against the lower mold 10 to shape the laminate 200 along the surface shape of the lower mold 10, and is made of, for example, a metal material. The upper mold 20 presses the laminate 200, which is fixed to the lower mold 10, against the side surface 12, convex surface 13, concave surface 14, and bottom surface 15 of the lower mold 10, to shape the laminate 20 along the surface shapes of the lower mold 10 and the upper mold 20.

[0027] As shown in Fig. 4, the upper mold 20 has a plurality of shaping sections 21, 22, 23, 24, 25, 26, 27, 28, and 29 arranged adjacent to each other along the longitudinal direction LD. As shown in Fig. 4, the distance in the Z-axis direction from the shaping sections 21-29 to the bottom surface 15 of the lower mold 10 is a constant distance D0. In other words, the distance from the shaping sections 21-29 to the bottom surface 15 of the lower mold 10 before starting to move toward the lower mold 10 is constant.

[0028] As shown in FIG. 3, the shaping portion 21 has a lower surface 21a, a side surface 21b, and a convex surface 21c as a surface shape for shaping the laminate 200. The lower surface 21a of the shaping portion 21 is a surface that extends flatly in a direction intersecting the X-axis. The side surface 21b of the shaping portion 21 is a surface that extends flatly along the Z-axis. The convex surface 21c is a surface that connects the lower surface 21a and the side surface 21b, and has an arc shape in which the normal direction of the surface gradually changes from a surface intersecting the X-axis to a surface along the Z-axis as it approaches the side surface 21b from the lower surface 21a along the X-axis. The convex surface 21c has a shape that corresponds to the concave surface 14 of the lower mold 10.

[0029] The above has been a description of the shaping portion 21, but the same applies to the shaping portions 22, 23, 24, 25, 26, 27, 28, and 29, so their descriptions will be omitted below. Note that the shape of the lower mold 10 may be different at each position along the longitudinal direction LD. When the shape of the lower mold 10 is different at each position along the longitudinal direction LD, the shapes of the shaping portions 22, 23, 24, 25, 26, 27, 28, and 29 will be different from each other.

[0030] 3, the upper mold 30 is a block-shaped mold that presses a region near the second end region 200b of the laminate 200 against the upper surface 11 that is adjacent to one side of the convex surface 13 of the lower mold 10 in the width direction WD, and is made of, for example, a metal material. The upper mold 30 presses the laminate 200 fixed to the lower mold 10 against the lower mold 10 to form it according to the surface shapes of the lower mold 10 and the upper mold 30.

[0031] The biasing force generating mechanism 40 is a mechanism that generates a biasing force that presses the upper mold 20 toward the lower mold 10. As shown in FIG. 4, the biasing force generating mechanism 40 has biasing force generating units 41, 42, 43, 44, 45, 46, 47, 48, and 49. As shown in FIG. 4, the biasing force generating units 41-49 are connected to the shaping units 21-29, respectively, and generate a biasing force that presses the shaping units 21-29 toward the lower mold 10.

[0032] 3, the biasing force generating unit 41 has a fixed frame 41a, a slide frame 41b, and a drive unit 41c. The fixed frame 41a is a member that is installed above the upper mold 30 and extends horizontally along the X-axis.

[0033] The slide frame 41b is a member that extends vertically along the Z axis and is attached to the fixed frame 41a so as to be movable along the Z axis. The slide frame 41b is made of, for example, aluminum. It is preferable that the slide frame 41b has a hollow portion formed in part to reduce weight. The lower end of the slide frame 41b is connected to the shaping portion 21.

[0034] The driving unit 41c has, for example, a motor, and generates a driving force that moves the slide frame 41b along the Z axis relative to the fixed frame 41a. The driving unit 41c moves the slide frame 41b downward along the Z axis, thereby pressing the side surface 21b of the shaping unit 21 against the laminate 200, and shaping the laminate 200 sandwiched between the side surface 21b and the side surface 12 of the lower mold 10.

[0035] Moreover, the driving unit 41c moves the slide frame 41b further downward along the Z axis, thereby pressing the lower surface 21a of the shaping unit 21 against the laminate 200, and shaping the laminate 200 sandwiched between the lower surface 21a and the bottom surface 15 of the lower mold. Similarly, the driving unit 41c presses the convex surface 21c of the shaping unit 21 against the laminate 200, and shaping the laminate 200 sandwiched between the convex surface 21c and the concave surface 14 of the lower mold.

[0036] The above has described the biasing force generator 41, but the same applies to the biasing force generators 42, 43, 44, 45, 46, 47, 48, and 49, so their descriptions will be omitted below. As shown in Fig. 4, the biasing force generator 42 has a fixed frame 42a, a sliding frame 42b, and a driving unit 42c. The biasing force generator 43 has a fixed frame 43a, a sliding frame 43b, and a driving unit 43c. The biasing force generator 44 has a fixed frame 44a, a sliding frame 44b, and a driving unit 44c.

[0037] The biasing force generator 45 has a fixed frame 45a, a sliding frame 45b, and a driving unit 45c. The biasing force generator 46 has a fixed frame 46a, a sliding frame 46b, and a driving unit 46c. The biasing force generator 47 has a fixed frame 47a, a sliding frame 47b, and a driving unit 47c. The biasing force generator 48 has a fixed frame 48a, a sliding frame 48b, and a driving unit 48c. The biasing force generator 49 has a fixed frame 49a, a sliding frame 49b, and a driving unit 49c.

[0038] The control unit 50 is a device that controls the biasing force generating mechanism 40. As shown in Fig. 5, the control unit 50 transmits a control signal to each of the biasing force generating units 41-49 via a signal line 51. As will be described later, the control unit 50 controls the multiple biasing force generating units 41-49 so that a pair of shaping units arranged adjacent to each other along the longitudinal direction LD is pressed against the lower mold 10 at different timings.

[0039] Next, with reference to Fig. 6 to Fig. 13, a composite material molding method for molding a composite material by shaping a laminate 200 using the shaping apparatus 100 of this embodiment will be described. Fig. 6 is a flowchart showing the composite material molding method using the shaping apparatus 100. Fig. 7 is a flowchart of the shaping step shown in Fig. 6. Fig. 8 is a cross-sectional view showing the shaping apparatus 100 in the lamination step of Fig. 6.

[0040] In the lamination process of step S101, a plurality of fiber sheets are laminated to form a laminate 200. As shown in Fig. 8, with the mold part 60 assembled to the lower mold part 10, the upper surface 11 of the lower mold part 10 and the upper surface 61 of the mold part 60 form a horizontal plane, and a plurality of reinforcing fiber sheets are laminated one by one on the horizontal plane.

[0041] Fig. 9 is a partial enlarged view of part B in Fig. 8. As shown in Fig. 9, reinforcing fiber sheets 201, 202, 203, 204, and 205 are stacked in this order on the upper surface 11 of the lower mold 10 and the upper surface 61 of the partial mold 60, thereby forming a flat laminate 200. The number of layers of reinforcing fiber sheets constituting the laminate 200 can be any number.

[0042] In the fixing process of step S102, the second end region 200b of the laminate 200 is fixed to the upper surface 11 of the lower mold 10. The laminate 200 is fixed to the lower mold 10, for example, by attaching a fixing member (not shown) to the upper surface 11 and sandwiching the second end region 200b between the fixing member (not shown) and the upper surface 11. After the laminate 200 has been fixed to the lower mold 10, the partial mold 60 is removed from the lower mold 10.

[0043] In the first shaping process of step S103, the upper mold 30 is pressed against the upper surface 11 adjacent to one side of the convex surface 13 of the lower mold 10 in the width direction WD to form the laminate 200. Specifically, the upper mold 30 is placed above the second end region 200b of the laminate 200 fixed to the upper surface 11 of the lower mold 10, and a biasing force generating mechanism 40 is placed above the upper mold 30. The weight of the upper mold 30 and the biasing force generating mechanism 40 shapes the second end region 200b of the laminate 200 to conform to the shape of the upper surface 11.

[0044] Here, the weight of the upper mold 30 and the biasing force generating mechanism 40 is used to shape the laminate 200 to the shape of the lower mold 10, but other configurations are also possible. For example, the upper mold 30 may be configured to be fixed to the lower mold 10 by a fastening structure so that the laminate 200 has a predetermined thickness. In this case, by adjusting the predetermined thickness, the shaping force with which the upper mold 30 presses the laminate 200 against the lower mold 10 can be appropriately adjusted.

[0045] In the second shaping process of step S104, the biasing force generating mechanism 40 presses the upper mold 20 downward along the Z axis against the laminate 200 to shape the laminate 200 along the surface shape of the lower mold 10. Here, the second shaping process will be described in detail with reference to FIG.

[0046] As shown in FIG. 7, in step S201, the control unit 50 controls the driving unit 41c of the biasing force generating unit 41 so as to start moving the shaping unit 21 from the state shown in FIG. In step S202, the control unit 50 controls the drive units 42c, 43c of the force generating units 42, 43 to start moving the shaping units 22, 23 toward the lower mold 10 when a predetermined time has elapsed since the shaping unit 21 started moving toward the lower mold 10.

[0047] In step S203, the control unit 50 controls the drive units 44c, 45c of the force generating units 44, 45 to start moving the shaping units 24, 25 toward the lower mold 10 when a predetermined time has elapsed since the shaping units 22, 23 started moving toward the lower mold 10. In step S204, the control unit 50 controls the drive units 46c, 47c of the force generating units 46, 47 to start moving the shaping units 26, 27 toward the lower mold 10 when a predetermined time has elapsed since the shaping units 24, 25 started moving toward the lower mold 10.

[0048] In step S205, the control unit 50 controls the drive units 48c, 49c of the biasing force generation units 48, 49 to start moving the shaping units 28, 29 toward the lower mold 10 at a timing when a predetermined time has elapsed since the shaping units 26, 27 started to move toward the lower mold 10. As a result, the movement of the shaping units 21-29 toward the lower mold 10 starts, resulting in the state shown in Figures 10 and 11.

[0049] Fig. 10 is a cross-sectional view showing the shaping device 100 in the second shaping step of Fig. 6, showing a state in which the upper mold 20 is moving toward the lower mold 10. Fig. 11 is a right side view of the shaping device 100 shown in Fig. 10, showing a state in which the upper mold 20 is moving toward the lower mold 10. Fig. 10 is a cross-sectional view taken along the CC arrow in Fig. 11.

[0050] As shown in Figure 10, when the shaping section 21 moves from top to bottom along the Z axis along the side surface 12 of the lower mold 10, the side surface 21b of the shaping section 21 presses the laminate 200 against the side surface 12 of the lower mold 10, thereby shaping the laminate 200 to the shape of the side surface 12.

[0051] As shown in Figure 11, the distance in the Z-axis direction from the shaping sections 21-29 to the bottom surface 15 of the lower mold 10 is not a constant distance. The distance in the Z-axis direction from the shaping section 21 to the bottom surface 15 is D1, the distance in the Z-axis direction from the shaping sections 22, 23 to the bottom surface 15 is D2, and the distance in the Z-axis direction from the shaping sections 24, 25 to the bottom surface 15 is D3. Furthermore, the distance in the Z-axis direction from the shaping sections 26, 27 to the bottom surface 15 is D4, and the distance in the Z-axis direction from the shaping sections 28, 29 to the bottom surface 15 is D5. As shown in Figure 11, distance D2 is longer than distance D1, distance D3 is longer than distance D2, distance D4 is longer than distance D3, and distance D5 is longer than distance D4.

[0052] 11, the distance in the Z-axis direction from the shaping section 21-29 to the bottom surface 15 of the lower mold 10 is not constant because the timing of moving each shaping section toward the lower mold 10 is made different. The control section 50 controls the biasing force generating sections 41-49 so that the timing of moving the shaping section 22-29, which is arranged closer to the end portion of the laminate 200 in the longitudinal direction LD than the center position, toward the lower mold 10 is delayed compared to the timing of moving the shaping section 21, which is arranged at the center position (predetermined position) in the longitudinal direction LD of the lower mold 10, toward the lower mold 10.

[0053] The control unit 50 also detects the position of the laminate 200 from the center position of the lower mold 10 in the longitudinal direction LD. Long direction LThe control unit 50 controls the biasing force generating units 41-49 so that the multiple shaping units 22-29 are successively pressed against the lower mold 10 toward the end of D, with a timing delayed from that of the shaping unit 21. The control unit 50 controls the biasing force generating units 41-49 so that the shaping unit 21 is first pressed against the lower mold 10, then the shaping units 22 and 23 are pressed against the lower mold 10, then the shaping units 24 and 25 are pressed against the lower mold 10, then the shaping units 26 and 27 are pressed against the lower mold 10, and finally the shaping units 28 and 29 are pressed against the lower mold 10.

[0054] In step S206, the control unit 50 controls the force generating unit 41 to stop the movement of the shaping unit 21 in response to the laminate 200 being sandwiched between the shaping unit 21 and the bottom surface 15 of the lower mold 10. In step S207, the control unit 50 controls the force generating units 42, 43 to stop the movement of the shaping units 22, 23 in response to the laminate 200 being sandwiched between the shaping units 22, 23 and the bottom surface 15 of the lower mold 10.

[0055] In step S208, the control unit 50, in response to the state in which the laminate 200 is sandwiched between the shaping units 24, 25 and the bottom surface 15 of the lower mold 10, 24,25 The biasing force generating units 44 and 45 are controlled to stop the movement of the rollers. In step S209, the control unit 50 controls the force generating units 46, 47 to stop the movement of the shaping units 26, 27 in response to the laminate 200 being sandwiched between the shaping units 26, 27 and the bottom surface 15 of the lower mold 10.

[0056] In step S210, the control unit 50 controls the biasing force generating units 48, 49 to stop the movement of the shaping units 28, 29 in response to the state in which the laminate 200 is sandwiched between the shaping units 28, 29 and the bottom surface 15 of the lower mold 10. When step S210 is completed, the state shown in Figs. 12 and 13 is reached.

[0057] Fig. 12 is a cross-sectional view showing the shaping device 100 in the second shaping step of Fig. 6, showing the state after the upper mold 20 has moved toward the lower mold 10. Fig. 13 is a right side view of the shaping device 100 shown in Fig. 12, showing the state after the upper mold 20 has moved toward the lower mold 10. Fig. 12 is a cross-sectional view taken along the arrow DD in Fig. 13. With the above, each process in the second shaping step of Fig. 6 is completed.

[0058] In the above-described second shaping step, among the plurality of shaping parts 21-29, the shaping part 21 arranged at the center in the longitudinal direction LD is moved toward the lower mold 10 at the earliest timing, but other embodiments are also possible. For example, if a part where the shape changes significantly along the longitudinal direction LD (a part where wrinkles are likely to occur) is present at a predetermined position in the longitudinal direction LD, it is preferable to move the shaping part closest to that part toward the lower mold 10 at the earliest timing. In this case, the control unit 50 controls so that the shaping part closest to the part where the shape changes significantly along the longitudinal direction LD is moved toward the lower mold 10 first, and then the shaping part adjacent to it is moved toward the lower mold 10.

[0059] Depending on the shape of the lower mold 10, in order to suppress wrinkles, it may be appropriate to simultaneously move the shaping portions at multiple positions (for example, adjacent positions) in the longitudinal direction LD toward the lower mold 10. In this case, the control unit 50 controls the biasing force generating units 41-49 so that two or more shaping portions among the shaping units 21-29 are simultaneously moved toward the lower mold 10.

[0060] Furthermore, it is preferable to store in advance in a storage unit (not shown) the movement start timings of the plurality of shaping units 21-29 suitable for suppressing the occurrence of wrinkles in the laminate 200 when the laminate 200 is shaped by the lower mold 10, the upper mold 20, and the upper mold 30. In this case, the control unit 50 reads out the movement start timings of the plurality of shaping units 21-29 stored in the storage unit in the second shaping step of Fig. 6 and controls the movement start timings of the plurality of shaping units 21-29.

[0061] In the resin injection step of step S105, the laminate 200 shaped to fit the surface shapes of the lower mold 10 and the upper mold 20 is placed in a molding die (not shown). Thereafter, a resin material is injected into the molding die, and the multiple reinforcing fiber sheets of the laminate 200 are impregnated with the resin material.

[0062] In the resin injection process, only the lower mold 10 is used, and the upper surface of the laminate 200 formed in the lower mold 10 is covered with a vacuum bag film (not shown), and then the inside is decompressed, and then the resin is injected. This may be done using assisted resin transfer molding.

[0063] In the curing process of step S106, the resin material impregnated into the multiple reinforcing fiber sheets of the laminate 200 is cured. If the resin material is thermosetting, the resin material is heated to a temperature equal to or higher than the curing temperature to cure the resin material. If the resin material is a thermoplastic resin, the resin material is cooled to a temperature below the softening temperature to cure the resin material. By performing the above steps S101 to S106, a composite material molding method is performed in which the shaping device 100 is used to shape the laminate 200 to form a composite material.

[0064] The functions and effects of the shaping apparatus 100 of the present embodiment described above will be described. According to the shaping device 100 of this embodiment, the upper mold 20 is pressed against the lower mold 10 having the convex surface 13 along the width direction WD, thereby shaping the laminate 200 along the surface shape of the lower mold 10. The biasing force generating mechanism 40 is controlled by the control unit 50 and applies a biasing force to the upper mold 20 to press it against the lower mold 10.

[0065] The upper mold 20 has a plurality of shaping sections 21-29 arranged along the longitudinal direction LD, each of which is connected to a plurality of urging force generating sections 41-49 of the urging force generating mechanism 40. The control section 50 controls the plurality of urging force generating sections 41-49 so as to press a pair of shaping sections arranged adjacent to each other along the longitudinal direction LD against the lower mold 10 at different timings.

[0066] According to the shaping device 100 of this embodiment, a pair of shaping parts arranged adjacent to each other along the longitudinal direction LD are pressed against the lower die 10 at different times. When shaping the laminate 200 in which one of the pair of shaping parts is sandwiched between the lower die 10 and the pair of shaping parts, a gap is formed between the other of the pair of shaping parts and the lower die 10, allowing deformation of the laminate 200. Therefore, compared to when press molding is performed using dies in which the upper and lower dies are each integral in structure, or when the shaping device 100 presses all of the multiple shaping parts against the lower die 10 at the same time, it is possible to suppress the occurrence of wrinkles due to not allowing deformation of the laminate 200.

[0067] According to the shaping device 100 of this embodiment, by delaying the timing of moving the shaping units 22, 23, which are located closer to the end of the laminate 200 than the predetermined position, toward the lower mold 10 compared to the timing of moving the shaping unit 21, which is located at a predetermined position (for example, the central position) in the longitudinal direction LD, toward the lower mold 10, it is possible to propagate the deformation of the laminate 200, which occurs when the shaping units 21-29 are pressed against the lower mold 10, from the predetermined position toward the end of the laminate 200. This makes it possible to suppress the occurrence of wrinkles due to not allowing deformation of the laminate 200.

[0068] According to the shaping device 100 of this embodiment, the multiple shaping portions 21-29 are successively pressed against the lower mold 10 with delayed timing from a predetermined position toward the end of the laminate 200. Therefore, the deformation of the laminate 200 that occurs when the shaping portions 21-29 are pressed against the lower mold 10 is continuously propagated from the predetermined position toward the end of the laminate 200 without being constrained between the lower mold 10 and the upper mold 20, and the occurrence of wrinkles can be suppressed.

[0069] According to the shaping device 100 of this embodiment, by pressing the laminate 200 against the upper surface 11 adjacent to one side in the width direction WD of the convex surface 13 of the lower mold 10, it is possible to shape the region on one side in the width direction WD of the laminate 200 according to the shape of the upper surface 11. Furthermore, by pressing the upper mold 20 against the side surface 12 adjacent to the other side in the width direction WD of the convex surface 13 of the lower mold 10, it is possible to shape the region on the other side in the width direction WD of the laminate 200 according to the shape of the side surface 12. Furthermore, it is possible to shape the region sandwiched between one side and the other side in the width direction WD of the laminate 200 according to the shape of the convex surface 13.

[0070] According to the shaping device 100 of this embodiment, by moving the upper mold 20 along the side surface 12 of the lower mold 10, it is possible to shape the laminate 200 along the side surface 12 from the region close to the convex surface 13 toward the end portion in the width direction WD while allowing deformation of the laminate 200. Since the laminate 200 is shaped while allowing deformation, it is possible to suppress the occurrence of wrinkles.

[0071] Second Embodiment Next, a shaping apparatus 100A according to a second embodiment of the present disclosure will be described with reference to the drawings. This embodiment is a modified example of the first embodiment, and is the same as the first embodiment except as otherwise specifically described below, and therefore, the description below will be omitted.

[0072] Fig. 14 is a cross-sectional view showing the shaping apparatus 100A according to this embodiment, showing a state before the upper mold 20 starts to move toward the lower mold 10. Fig. 15 is a cross-sectional view showing the shaping apparatus 100A according to this embodiment, showing a state in which the upper mold 20 is moving toward the lower mold 10. Fig. 16 is a cross-sectional view showing the shaping apparatus 100A according to this embodiment, showing a state in which the movement of the upper mold 20 toward the lower mold 10 has been completed.

[0073] In the shaping apparatus 100 of the first embodiment, the biasing force generating mechanism 40 moves the slide frame 41b relative to the fixed frame 41a installed above the upper mold 20. In contrast, the biasing force generating mechanism 40A of the shaping apparatus 100A of the present embodiment moves the slide frame 41Ab relative to the support frame 41Ad installed on the installation surface S.

[0074] 14 to 16, the biasing force generating unit 41A of the biasing force generating mechanism 40A of the shaping apparatus 100A has a slide frame 41Ab, a support frame 41Ad, and connecting frames 41Ae and 41Af. The lower end of the slide frame 41Ab is connected to the shaping unit 21. A plate 70 is disposed above the upper mold 30 to apply a biasing force to the upper mold 30 for shaping the laminate 200.

[0075] The support frame 41Ad is fixed to the installation surface S. The slide frame 41Ab is fixed to the connecting frames 41Ae and 41Af. The connecting frames 41Ae and 41Af are attached to the support frame 41Ad in a state where they can move along the Z axis. When a driving force is applied by the driving unit 41Ac, the slide frame 41Ab moves integrally with the connecting frames 41Ae and 41Af in the direction along the Z axis.

[0076] In the shaping apparatus 100A of this embodiment, the support frame 41Ad is fixed to the installation surface S, and therefore the slide frame 41Ab is reliably supported by the support frame 41Ad so as not to separate from the side surface 12 of the lower mold 10. Therefore, when the upper mold 20 is moved toward the lower mold 10, a biasing force that presses the laminate 200 against the lower mold 10 can be reliably applied.

[0077] The shaping device according to the above-described embodiment can be understood, for example, as follows. The shaping device according to the present disclosure is a shaping device (100) for shaping a laminate (200) obtained by stacking a plurality of sheet materials containing reinforcing fibers, and includes a first shaping mold (10) having a curved surface (13) extending along a longitudinal direction (LD) and including at least one of a concave shape and a convex shape along a width direction (WD), a second shaping mold (20) for shaping the laminate along the surface shape of the first shaping mold by pressing it against the first shaping mold, and a biasing force generating mechanism (40) for generating a biasing force for pressing the second shaping mold against the first shaping mold. ) and a control unit (50) that controls the biasing force generating mechanism, wherein the second shaping mold has a plurality of shaping sections (21-29) arranged along the longitudinal direction, the biasing force generating mechanism has a plurality of biasing force generating sections (41-49) that are connected to the plurality of shaping sections and generate biasing forces that press the shaping sections toward the first shaping mold, and the control unit controls the plurality of biasing force generating sections so that a pair of the shaping sections arranged adjacent to each other along the longitudinal direction presses against the first shaping mold at different timings.

[0078] According to the shaping device of the present disclosure, a second shaping mold is pressed against a first shaping mold having a curved surface including at least one of a concave shape and a convex shape along the width direction, thereby shaping a laminate to conform to the surface shape of the first shaping mold. The biasing force generating mechanism is controlled by the control unit and applies a biasing force to the second shaping mold to press it against the first shaping mold.

[0079] The second shaping mold has a plurality of shaping sections arranged along the longitudinal direction, and a plurality of biasing force generating sections of the biasing force generating mechanism are connected to each of the shaping sections. The control section controls the biasing force generating sections so that a pair of shaping sections arranged adjacent to each other along the longitudinal direction presses the pair of shaping sections toward the first shaping mold at different timings.

[0080] According to the shaping device of the present disclosure, a pair of shaping parts arranged adjacent to each other along the longitudinal direction are pressed against the first shaping mold at different times. When one of the pair of shaping parts is pressed against the first shaping mold to shape the laminate sandwiched between it and the first shaping mold, a gap is formed between the other of the pair of shaping parts and the first shaping mold, allowing deformation of the laminate. Therefore, compared to when the pair of shaping parts are pressed against the first shaping mold at the same time, it is possible to suppress the occurrence of wrinkles due to not allowing deformation of the laminate.

[0081] In the shaping device according to the present disclosure, the control unit may be configured to control the multiple force generating units so that the timing of moving the shaping unit, which is located at a predetermined position in the longitudinal direction, toward the first shaping mold is delayed compared to the timing of moving the shaping unit, which is located at the end side of the laminate closer to the predetermined position, toward the first shaping mold.

[0082] According to the shaping device of this configuration, by delaying the timing of moving the shaping part located at a predetermined position in the longitudinal direction toward the first shaping mold, which is closer to the end of the laminate than the predetermined position, deformation of the laminate that occurs when the shaping part is pressed against the first shaping mold can be propagated from the predetermined position toward the end of the laminate, thereby suppressing the occurrence of wrinkles due to not allowing deformation of the laminate.

[0083] In the shaping device having the above configuration, the control unit may be configured to control the multiple force generating units so that the multiple shaping units are pressed against the first shaping mold continuously from the predetermined position toward the end of the laminate with delayed timing.

[0084] According to the shaping device of this aspect, the multiple shaping parts are continuously pressed against the first shaping mold from a predetermined position toward the end of the laminate with delayed timing. Therefore, the deformation of the laminate that occurs when the shaping parts are pressed against the first shaping mold is continuously propagated from the predetermined position toward the end of the laminate without being constrained between the first shaping mold and the second shaping mold, thereby suppressing the occurrence of wrinkles.

[0085] The shaping device according to the present disclosure may include a third shaping mold (30) that presses the laminate against a first shaping surface adjacent to one side of the curved surface of the first shaping mold in the width direction, and the biasing force generating mechanism may be configured to generate a biasing force that presses the second shaping mold against a second shaping surface adjacent to the other side of the curved surface of the first shaping mold in the width direction.

[0086] According to the shaping device of this configuration, by pressing the laminate against the first shaping surface adjacent to one side in the width direction of the curved surface of the first shaping mold, the region on one side in the width direction of the laminate can be shaped along the shape of the first shaping surface. Also, by pressing the second shaping mold against the second shaping surface adjacent to the other side in the width direction of the curved surface of the first shaping mold, the region on the other side in the width direction of the laminate can be shaped along the shape of the first shaping surface. 2 It is possible to shape the laminate in accordance with the shape of the shaping surface. Furthermore, the region sandwiched between one side and the other side in the width direction of the laminate can be shaped in accordance with the shape of the curved surface.

[0087] In the shaping device having the above configuration, the biasing force generating mechanism may be configured to shape the laminate along the second shaping surface by moving the second shaping mold along the second shaping surface of the first shaping mold.

[0088] According to the shaping device of this aspect, by moving the second shaping mold along the second shaping surface of the first shaping mold, the laminate can be shaped along the second shaping surface from the region close to the curved surface toward the end in the width direction while allowing deformation of the laminate. Since the laminate is shaped while allowing deformation, the occurrence of wrinkles can be suppressed.

[0089] The shaping method according to the embodiment described above can be understood, for example, as follows. The shaping method according to the present disclosure is a shaping method for shaping a laminate formed by stacking a plurality of sheet materials containing reinforcing fibers, and includes a fixing step of fixing one end of the laminate to a first shaping mold having a curved surface that extends along the longitudinal direction and includes at least one of a concave shape or a convex shape along the width direction, and a shaping step of shaping the laminate to conform to the surface shape of the first shaping mold by pressing a second shaping mold having a plurality of shaping portions arranged along the longitudinal direction against the first shaping mold, wherein the shaping step presses a pair of the shaping portions arranged adjacent to each other along the longitudinal direction against the first shaping mold at different times.

[0090] According to the shaping method of the present disclosure, a laminate is shaped to conform to the surface shape of the first shaping mold by pressing a second shaping mold against a first shaping mold having a curved surface including at least one of a concave shape and a convex shape along the width direction. The second shaping mold has a plurality of shaping portions arranged along the longitudinal direction.

[0091] According to the shaping method of the present disclosure, the shaping step presses a pair of shaping parts arranged adjacent to each other along the longitudinal direction against a first shaping mold at different times. When one of the pair of shaping parts is sandwiched between the pair of shaping parts and the first shaping mold to shape the laminate, a gap is formed between the other of the pair of shaping parts and the first shaping mold, allowing deformation of the laminate. Therefore, compared to when the pair of shaping parts are pressed against the first shaping mold at the same time, it is possible to suppress the occurrence of wrinkles due to not allowing deformation of the laminate.

[0092] In the shaping method according to the present disclosure, the shaping process may be configured to move the shaping section, which is positioned at a predetermined position in the longitudinal direction, toward the first shaping mold at a later timing than the timing at which the shaping section, which is positioned closer to the end of the laminate than the predetermined position, is moved toward the first shaping mold.

[0093] According to the shaping method of this configuration, the shaping portion disposed at a predetermined position in the longitudinal direction is No. 1 By delaying the timing of moving the shaping part, which is located closer to the end of the laminate than the predetermined position, toward the first shaping mold, the deformation of the laminate that occurs when the shaping part is pressed against the first shaping mold can be propagated from the predetermined position toward the end of the laminate, thereby suppressing the occurrence of wrinkles due to not allowing deformation of the laminate.

[0094] In the shaping method having the above configuration, the shaping process may be configured to move the plurality of shaping parts from the predetermined position toward the end of the laminate so that the plurality of shaping parts are pressed against the first shaping mold continuously with delayed timing.

[0095] According to the shaping method of this aspect, the multiple shaping parts are continuously pressed against the first shaping mold from a predetermined position toward the end of the laminate with delayed timing, so that deformation of the laminate that occurs when the shaping parts are pressed against the first shaping mold is continuously propagated from the predetermined position toward the end of the laminate without being constrained between the first shaping mold and the second shaping mold, thereby suppressing the occurrence of wrinkles.

[0096] In the shaping method according to the present disclosure, the shaping step may be configured to shape the laminate by pressing a third shaping mold against a first shaping surface adjacent to one side of the curved surface of the first shaping mold in the width direction, and pressing the second shaping mold against a second shaping surface adjacent to the other side of the curved surface of the first shaping mold in the width direction.

[0097] According to the shaping method of this configuration, by pressing the laminate against a first shaping surface adjacent to one side in the width direction of the curved surface of the first shaping mold, the region on one side in the width direction of the laminate can be shaped along the shape of the first shaping surface. Also, by pressing a second shaping mold against a second shaping surface adjacent to the other side in the width direction of the curved surface of the first shaping mold, the region on the other side in the width direction of the laminate can be shaped along the shape of the first shaping surface. Furthermore, the region sandwiched between one side and the other side in the width direction of the laminate can be shaped along the shape of the curved surface.

[0098] In the shaping method according to the above configuration, The shaping step includes: The second shaping mold may be moved along the second shaping surface of the first shaping mold, thereby shaping the laminate along the second shaping surface.

[0099] According to the shaping method of this aspect, by moving the second shaping mold along the second shaping surface of the first shaping mold, the laminate can be shaped along the second shaping surface from the region close to the curved surface toward the end in the width direction while allowing deformation of the laminate. Since the laminate is shaped while allowing deformation, the occurrence of wrinkles can be suppressed. [Explanation of symbols]

[0100] 10 Lower mold (first shaping mold) 11 Top side 12 Side 13 Convex (curved) surface 14 Concave 15 bottom 20 Upper mold (second shaping mold) 21, 22, 23, 24, 25, 26, 27, 28, 29 Shaped part 21a Bottom side 21b Side 21c convex 30 Upper mold 40,40A Force generating mechanism 41, 41A, 42, 43, 44, 45, 46, 47, 48, 49 Force generating section 41b, 41Ab Slide frame 41c, 41Ac drive unit 41Ad support frame 41Ae Connected Frame 41Af Connecting Frame 50 control section 100,100A forming device 200 laminate LD Longitudinal direction S Installation surface WD Width direction

Claims

1. A shaping device for shaping a laminate obtained by stacking a plurality of sheet materials containing reinforcing fibers, a first shaping mold extending along the longitudinal direction and having a first shaping surface, a second shaping surface, and a concave surface connecting the first shaping surface and the second shaping surface along the width direction; a second shaping mold that presses the laminate against the first shaping mold to shape the laminate along the surface shape of the first shaping mold; a biasing force generating mechanism that generates a biasing force that presses the second shaping die toward the first shaping die; a control unit that controls the biasing force generating mechanism, the second shaping mold has a plurality of shaping portions arranged along the longitudinal direction and each having a first surface facing the first shaping surface, a second surface facing the second shaping surface, and a convex surface connecting the first surface and the second surface; the biasing force generating mechanism has a plurality of biasing force generating sections that are connected to the plurality of shaping sections and generate biasing forces that press the shaping sections toward the first shaping mold to shape the laminate sandwiched between the first surface and the first shaping surface, to shape the laminate sandwiched between the convex surface and the concave surface, and to shape the laminate sandwiched between the second surface and the second shaping surface; The control unit controls the multiple force generating units so that the timing of moving the shaping unit, which is located at a predetermined position in the longitudinal direction, toward the first shaping mold is later than the timing of moving the shaping unit, which is located closer to the end of the laminate than the predetermined position, toward the first shaping mold, thereby propagating the deformation of the laminate that occurs when the shaping unit is pressed against the first shaping mold from the predetermined position toward the end of the laminate.

2. The shaping device according to claim 1, wherein the control unit controls the plurality of force generating units so that the plurality of shaping units are pressed against the first shaping mold continuously from the predetermined position toward the end of the laminate with delayed timing.

3. a third shaping mold for pressing the laminate against a first shaping surface adjacent to one side of the width direction of a curved surface that extends along the longitudinal direction of the first shaping mold and includes at least one of a concave shape and a convex shape along the width direction; The shaping device according to claim 1 or claim 2, wherein the biasing force generating mechanism generates a biasing force that presses the second shaping mold against a second shaping surface adjacent to the other side of the curved surface of the first shaping mold in the width direction.

4. The shaping device according to claim 3 , wherein the biasing force generating mechanism moves the second shaping mold along the second shaping surface of the first shaping mold, thereby shaping the laminate along the second shaping surface.

5. A shaping method for shaping a laminate obtained by stacking a plurality of sheet materials containing reinforcing fibers, a fixing step of fixing one end of the laminate to a first shaping mold having a first shaping surface extending along the longitudinal direction and a width direction, a second shaping surface, and a concave surface connecting the first shaping surface and the second shaping surface; a shaping step of shaping the laminate to conform to the surface shape of the first shaping mold by pressing a second shaping mold having a plurality of shaping portions arranged along the longitudinal direction against the first shaping mold, In the shaping step, the timing of moving the shaping part, which is arranged at a predetermined position in the longitudinal direction, toward the first shaping mold is delayed compared to the timing of moving the shaping part, which is arranged at the end side of the laminate relative to the predetermined position, toward the first shaping mold, so that deformation of the laminate, which occurs when the shaping part is pressed against the first shaping mold, is propagated from the predetermined position toward the end of the laminate, The shaping unit has a first surface facing the first shaping surface, a second surface facing the second shaping surface, and a convex surface connecting the first surface and the second surface, and the shaping method shapes the laminate sandwiched between the first surface and the first shaping surface, shapes the laminate sandwiched between the convex surface and the concave surface, and shapes the laminate sandwiched between the second surface and the second shaping surface.

6. The shaping method according to claim 5, wherein the shaping step comprises moving a plurality of the shaping portions from the predetermined position toward the end of the laminate so that the plurality of the shaping portions are pressed against the first shaping mold continuously with delayed timing.

7. The shaping method according to claim 5 or 6, wherein the shaping step comprises pressing a third shaping mold against a first shaping surface adjacent to one side of the width direction of a curved surface that extends along the longitudinal direction of the first shaping mold and includes at least one of a concave shape or a convex shape along the width direction, and pressing the second shaping mold against a second shaping surface adjacent to the other side of the width direction of the curved surface of the first shaping mold to shape the laminate.

8. The shaping method according to claim 7 , wherein the shaping step shaping the laminate along the second shaping surface by moving the second shaping mold along the second shaping surface of the first shaping mold.

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