JP2022113387A - Molding device and molding method - Google Patents

Abstract

To provide a molding device and a molding method which suitably mold a fiber sheet having a bent part.SOLUTION: A molding device 10 for molding a fiber sheet into such a shape having a bent part 11c as to extend in a lengthwise direction and be formed by bending the fiber sheet in a width direction perpendicular to the lengthwise direction includes: a mold 11 that is provided on one side of the fiber sheet and is used as a mold material for molding the fiber sheet; a support member that is provided on the other side of the fiber sheet, is provided at a part where the bent part is formed and has higher rigidity than that of the fiber sheet; a covering member covering the fiber sheet; and a pushing device for pushing the fiber sheet to the mold by the covering member, wherein the support member has a plurality of support pieces divided in the width direction.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a molding apparatus and molding method.

Conventionally, there is known a system for minimizing wrinkles that occur during molding of composite materials (see, for example, Patent Document 1). In this system, a composite material is placed on the tool over the embossing rod assembly. The embossing rod assembly includes a embossing rod that corrugates the composite when compressive pressure is applied to the composite, the embossing rod inhibiting the formation of wrinkles.

US Patent Application Publication No. 2017-0312999

By the way, when forming a composite material into a mold shape, a covering member such as a vacuum bag is covered with the composite material and vacuumed. When a sheet-shaped composite material is bent using a covering member to form a composite material having bent portions such as corners, wrinkles may occur in the bent portions, resulting in poor molding. In Patent Literature 1, although the wrinkles of the composite material are smoothed out by an embossing rod, the composite material becomes wavy.

Therefore, an object of the present disclosure is to provide a molding apparatus and a molding method capable of suitably molding a fiber sheet having bent portions.

The molding apparatus of the present disclosure is a molding apparatus that forms a fiber sheet into a shape having a bent portion formed by extending in the length direction and bending in the width direction orthogonal to the length direction, A molding die that is provided on one side of the fiber sheet and serves as a molding material for molding the fiber sheet, and a molding die that is provided on the other side of the fiber sheet and is provided at a site where the bent portion is formed, and is provided more than the fiber sheet. A support member having high rigidity, a covering member that covers the fiber sheet, and a pressing device that presses the fiber sheet against the mold with the covering member, wherein the support member is divided into a plurality of pieces divided in the width direction. It has a support piece.

A molding method of the present disclosure is a molding method for molding the fiber sheet into a shape having the bent portion using the above-described molding apparatus, comprising the step of placing the fiber sheet in the mold. before and after the step of arranging the fiber sheet, arranging the support member on the opposite side of the mold with the fiber sheet interposed therebetween, corresponding to the portion where the bent portion is formed; placing the covering member to cover the fiber sheet; and pressing the fiber sheet against the mold with the covering member.

According to the present disclosure, it is possible to suitably form a fiber sheet having bent portions.

FIG. 1 is a schematic perspective view of a molding die of a molding apparatus according to Embodiment 1. FIG. FIG. 2 is a schematic perspective view of the arrangement of fiber sheets. FIG. 3 is an explanatory diagram of the molding method according to the first embodiment. FIG. 4 is a schematic perspective view of a molding die of a molding apparatus according to Embodiment 2. FIG. FIG. 5 is a schematic perspective view of the arrangement of fiber sheets. FIG. 6 is a schematic perspective view of a molding die of a molding apparatus according to Embodiment 3. FIG. 7 is a schematic perspective view of a molding die of a molding apparatus according to Embodiment 4. FIG. FIG. 8 is a schematic perspective view of the arrangement of fiber sheets. FIG. 9 is a cross-sectional view of the support piece. 10 is a schematic perspective view of a molding die of a molding apparatus according to Embodiment 5. FIG.

Hereinafter, embodiments according to the present disclosure will be described in detail based on the drawings. In addition, this invention is not limited by this embodiment. In addition, components in the following embodiments include components that can be easily replaced by those skilled in the art, or components that are substantially the same. Furthermore, the components described below can be combined as appropriate, and when there are multiple embodiments, each embodiment can be combined.

[Embodiment 1]
A forming apparatus 10 according to Embodiment 1 is an apparatus for forming a fiber sheet S having a bent portion D. As shown in FIG. The fiber sheet S extends in the length direction, and the width direction is the direction perpendicular to the length direction. In Embodiment 1, the fiber sheet S is long in the length direction and short in the width direction, but is not particularly limited, and may be short in the length direction and long in the width direction. The forming apparatus 10 bends the fiber sheet S in the width direction to form a shape having a bent portion D. As shown in FIG. In addition, since the shape having the bent portion D is sufficient, for example, the shape may be bent in the width direction and deformed in the length direction. In other words, in the fiber sheet S after molding, the bent portion D, which is changed two-dimensionally, may be changed three-dimensionally. In the first embodiment, a sheet obtained by impregnating reinforcing fibers with a resin is used as the fiber sheet S, and for example, a prepreg is used. In Embodiment 1, a prepreg is used as the fiber sheet S, but the configuration is not particularly limited to this, and a dry reinforcing fiber sheet that does not contain resin may be used. In addition, in Embodiment 1, the fiber sheet S is a laminate in which a plurality of layers are laminated, but it may be a single layer, and is not particularly limited.

(Molding equipment)
FIG. 1 is a schematic perspective view of a molding die of a molding apparatus according to Embodiment 1. FIG. FIG. 2 is a schematic perspective view of the arrangement of fiber sheets. FIG. 3 is an explanatory diagram of the molding method according to the first embodiment. As shown in FIGS. 1 to 3, the molding device 10 includes a mold 11, a support member 12, a covering member 13, a suction device 14, and a holding member 16. As shown in FIG.

The molding die 11 is arranged on a base 17 and serves as a molding material for molding the fiber sheet S. As shown in FIG. As shown in FIGS. 1 to 3, the molding die 11 is a male mold that protrudes upward, and is a rectangular parallelepiped molding die 11 that is long in the length direction. The mold 11 includes an upper surface portion 11a, a pair of side surface portions 11b provided on both sides in the width direction of the upper surface portion 11a, and a pair of bent portions 11c formed between the upper surface portion 11a and the pair of side surface portions 11b. have. The bent portion 11c is, for example, a bent portion 11c such that the angles formed by the upper surface portion 11a and the side surface portions 11b are right angles. In the bent portion 11c, the angle formed by the upper surface portion 11a and the side surface portions 11b may be an angle other than a right angle.

The support member 12 is provided on the other side of the mold 11 with the fiber sheet S interposed therebetween. That is, the molding die 11 is provided on one side of the fiber sheet S, and the support member 12 is provided on the other side of the fiber sheet S. As shown in FIG. The support member 12 has higher rigidity than the fiber sheet S, and is made of, for example, a metal material, a film, or an elastic material such as silicone rubber. The support member 12 is provided between the fiber sheet S and the covering member 13 and is provided integrally with the fiber sheet S. Specifically, the support member 12 is integrated by being attached onto the fiber sheet S via an adhesive. The support member 12 may omit the adhesive, or may be integrated with the resin contained in the fiber sheet S.

The support member 12 is provided at a portion where the bent portion D of the fiber sheet S is formed. Specifically, as shown in FIG. 2 , the support members 12 are provided on both sides of the fiber sheet S in the width direction, which are the portions of the fiber sheet S away from the molding die 11 . The support member 12 may not be provided on the entire area of the fiber sheet S away from the molding die 11, and may be provided on at least a portion of the area.

2 and 3, the support member 12 has a plurality of support pieces 15 arranged side by side in the width direction with respect to the bent portion D of the fiber sheet S. As shown in FIGS. Specifically, the plurality of support pieces 15 are arranged side by side in the width direction at portions of the fiber sheet S facing the pair of side portions 11b. The plurality of support pieces 15 are divided and arranged so as to follow the shape of the side portion 11b during molding. Moreover, each of the support pieces 15 is provided to extend in the length direction.

The support piece 15 has a cross-sectional shape orthogonal to the length direction that is formed so as to be out of contact with the adjacent support piece 15 during molding. Specifically, the support piece 15 has a trapezoidal cross-sectional shape with the fiber sheet S side as the bottom. In addition, the plurality of support pieces 15 have the same protrusion height from the fiber sheet S. As shown in FIG. Furthermore, the plurality of support pieces 15 have a predetermined interval between the support pieces adjacent to each other in the width direction, which may be equal intervals or unequal intervals.

Here, the plurality of support pieces 15 may be configured using different materials. For example, the plurality of support pieces 15 may be made of a material that is harder (higher in rigidity) closer to the bend D and softer (lower in rigidity) farther from the bend D. In addition, the distance between the adjacent support pieces 15 may be narrower as the distance from the bent portion D increases, and wider as the distance from the bent portion D increases.

As shown in FIG. 3, the holding members 16 are provided on both sides of the mold 11 in the width direction, and hold both sides of the covering member 13 in the width direction. Note that FIG. 3 shows the holding member 16 on one side in the width direction. The holding member 16 is installed on the base 17 and has a height capable of holding the covering member 13 at substantially the same height as the molding die 11 in the height direction orthogonal to the length direction and width direction. . The holding member 16 preferably has the same height as the mold 11 , but is not particularly limited, and may be higher or lower than the mold 11 . Further, although the holding member 16 is provided in the first embodiment, the holding member 16 may be omitted.

The covering member 13 is provided to cover the fiber sheet S, as shown in FIG. The covering member 13 is, for example, a film made of silicone rubber or the like. The covering member 13 covers the molding die 11, the fiber sheet S placed on the molding die 11, and the holding member 16, and a sealing material (not shown) is provided between the covering member 13 and the base 17 to airtightly seal the interior thereof. is sealed to

The suction device 14 sucks the internal atmosphere between the molding die 11 and the covering member 13 to press the fiber sheet S against the molding die 11 with the covering member 13 . The suction device 14 is, for example, a vacuum pump. The suction device 14 forms the fiber sheet S into a shape following the mold 11 by sucking the internal atmosphere of the hermetically sealed covering member 13 through a suction port (not shown). The fiber sheet S is heated by a heating device (not shown) at the time of molding to reduce the viscosity of the resin contained in the fiber sheet S and improve shapeability. As a result, the resin contained in the fiber sheet S is cured. Although the suction device 14 is used in the first embodiment, any device that presses the fiber sheet S against the mold 11 with the covering member 13 may be used.

(Molding method)
Next, a molding method using the molding apparatus 10 will be described with reference to FIG. In this molding method, the fiber sheet S having a flat plate shape is molded into a shape having a bent portion D by following the molding die 11 .

In the molding method of Embodiment 1, first, a plurality of support pieces 15 are arranged in advance on a flat fiber sheet S (step S1). In step S1, the fiber sheet S and the plurality of support pieces 15 are integrated by sticking the plurality of support pieces 15 onto the fiber sheet S with an adhesive. Further, in step S1, a plurality of support pieces 15 are arranged side by side in the width direction with respect to the portion of the fiber sheet S away from the molding die 11. As shown in FIG. Subsequently, the fiber sheet S in which the plurality of support pieces 15 are integrated is placed on the mold 11 (step S2). In step S2, the mold 11 is positioned on one side (lower side) of the fiber sheet S, and the support member 12 is positioned on the other side (upper side) of the fiber sheet S. As shown in FIG. Then, in step S2, the fiber sheet S is arranged with respect to the mold 11 so that the plurality of support pieces 15 are positioned at the portions of the fiber sheet S where the bent portions D are formed.

After that, in the molding method of Embodiment 1, as shown in FIG. 3, the covering member 13 is arranged so as to cover the fiber sheet S (step S3). At step S3, the support piece 15 is positioned between the covering member 13 and the fiber sheet S. As shown in FIG. Then, in step S3, the space between the covering member 13 and the mold 11 is airtightly sealed by providing the covering member 13 . Next, in the molding method of Embodiment 1, as shown in FIG. 2, the atmosphere between the mold 11 and the covering member 13 is sucked by the suction device 14 (step S4). In step S4, the atmosphere inside the hermetically sealed covering member 13 is evacuated, and the fiber sheet S is deformed following the mold 11 due to the atmospheric pressure. The fiber sheet S is pressed to form a fiber sheet S having a bent portion D.

As shown in FIG. 3, when the fiber sheet S is deformed in step S4, the portion of the fiber sheet S in contact with the upper surface portion 11a of the mold 11 is not deformed, and the fiber sheet corresponding to the side surface portion 11b of the mold 11 is deformed. The portion S is bent and deformed so as to approach the side portion 11b. At this time, since the portion of the fiber sheet S corresponding to the side surface portion 11b is supported by the plurality of support pieces 15, the portion on the base end side of the fiber sheet S can be lifted while maintaining the rigidity of the fiber sheet S during molding. , while allowing deformation of the fiber sheet S, it contacts the forming die 11 toward the tip side portion. As a result, the formation of surplus portions on the fiber sheet S is suppressed, thereby suppressing the occurrence of wrinkles.

In the first embodiment, the molding die 11 has a rectangular parallelepiped shape, but depending on the molding die 11, the height in the height direction may change in the length direction. In this case, the plurality of support pieces 15 may differ in at least one of the cross-sectional shape orthogonal to the length direction and the number of divisions according to the shape of the mold 11 . That is, when the height of the molding die 11 increases from one side in the length direction to the other side, the number of divisions of the plurality of support pieces 15 in the length direction is the same, and the cross-sectional shape of each support piece 15 is may be changed so that the length in the height direction increases from one side in the length direction to the other side. Further, when the height of the molding die 11 increases from one side to the other side in the length direction, the cross-sectional shape of each support piece 15 over the length direction is the same, and the number of divisions of the plurality of support pieces 15 is may be arranged to increase from one longitudinal side to the other.

[Embodiment 2]
Next, a molding device 30 according to Embodiment 2 will be described with reference to FIG. In addition, in order to avoid duplication of description, in the second embodiment, portions different from the first embodiment will be described, and portions having the same configuration as in the first embodiment will be described with the same reference numerals. FIG. 4 is a schematic perspective view of a molding die of a molding apparatus according to Embodiment 2. FIG. FIG. 5 is a schematic perspective view of the arrangement of fiber sheets.

A molding apparatus 30 of the second embodiment differs from the molding die 11 of the first embodiment in a molding die 31 . As shown in FIG. 4, the molding die 31 has a stepped portion 21 on each of the pair of side portions 11b. The stepped portion 21 includes a side portion 11b on one side (front side) in the depth direction, a side portion 11b on the other side (back side) in the depth direction, and an inclined portion 11d between the side portions 11b on both sides. there is The slope portion 11d is a slope that widens in the width direction from one side in the depth direction to the other side. As described above, the mold 11 has the bent portion 11c and the stepped portion 21, and the bent portion 11c and the stepped portion 21 give the fiber sheet S a shape-changing portion that is a three-dimensionally changed portion. to form.

A plurality of support pieces 15 are provided for the shape-changing portion of the fiber sheet S, as shown in FIG. Specifically, a plurality of support pieces 15 are provided at portions of the fiber sheet S facing the pair of side portions 11b. In other words, the support pieces 15 are arranged not only in the width direction but also in the length direction. The plurality of support pieces 15 arranged in the length direction are divided and arranged so as to follow the shape of the stepped portion 21 during molding. Specifically, the plurality of support pieces 15 are arranged side by side in the length direction, and include a side portion 11b on one side (front side) in the depth direction, a side portion 11b on the other side (back side) in the depth direction, and a side portion 11b on the other side (back side) in the depth direction. is provided so as to face the inclined surface portion 11d between the side surface portions 11b. The position where the support piece 15 is provided is not particularly limited to the position described above, and may be provided at any position where wrinkles are likely to occur.

Therefore, in the molding method using the molding apparatus 30 of the second embodiment, the plurality of support members 12 are arranged in advance on the covering member 13 in step S1 of the first embodiment. Subsequently, in step S2, after the fiber sheet S is arranged on the mold 11, in step S3, the covering member 13 formed by integrating the plurality of support members 12 is arranged so as to cover the fiber sheet S. . Then, in step S4, the atmosphere between the mold 11 and the covering member 13 is sucked by the suction device 14 (step S4). In step S4, since the plurality of support pieces 15 are also arranged in the longitudinal direction, the fiber sheet S is molded along the stepped portion 21 of the side portion 11b of the mold 11, thereby forming the fiber sheet S. Mold the shape-changing part.

[Embodiment 3]
Next, a molding device 40 according to Embodiment 3 will be described with reference to FIG. Note that in the third embodiment, portions different from those in the first and second embodiments will be described in order to avoid redundant description, and portions having the same configuration as in the first and second embodiments will be described with the same reference numerals. FIG. 6 is a schematic perspective view of a molding die of a molding apparatus according to Embodiment 3. FIG.

In the molding apparatus 10 of Embodiment 1, the heights of the plurality of support pieces 15 are the same, but in the molding apparatus 40 of Embodiment 3, the heights of the plurality of support pieces 15 are different. . Specifically, the plurality of supporting pieces 15 have different projecting heights from the fiber sheet S, the closer they are to the bent portion D, the higher they are, and the farther they are from the bent portion D, the lower they are. That is, the plurality of support pieces 15 are arranged such that the height of the support pieces 15 corresponding to the portion of the fiber sheet S that contacts the mold 11 at an early stage is increased, and the height of the support pieces 15 that correspond to the portion of the fiber sheet S that contacts the mold 11 at a later stage is increased. The height of the support piece 15 corresponding to the portion of the sheet S is lowered.

[Embodiment 4]
Next, a molding device 50 according to Embodiment 4 will be described with reference to FIGS. 7 and 8. FIG. In order to avoid redundant description, in the fourth embodiment, portions different from those in the first to third embodiments will be described, and portions having the same configurations as those in the first to third embodiments will be described with the same reference numerals. FIG. 11 is a schematic perspective view of a mold of a molding apparatus according to Embodiment 4; FIG. 8 is a schematic perspective view of the arrangement of fiber sheets.

In the molding apparatus 50 of Embodiment 4, the molding die 51 has a curved shape in the length direction. That is, the mold 11 has a flat upper surface portion 11a, while one side (left side) of the pair of side surface portions 11b is a curved surface that is convex outward, and the other side (right side) is a curved surface that is convex inward. It is a face.

Further, the plurality of support pieces 15 have a shape that follows the curved surface of each side portion 11b. That is, each support piece 15 has a curved shape in the length direction. The plurality of support pieces 15 have a curved shape in which the support piece 15 provided corresponding to one side (left side) side portion 11b protrudes toward the opposite side of the fiber sheet S at the central portion in the length direction. . In addition, the plurality of support pieces 15 have a curved shape in which the support piece 15 provided corresponding to the side surface portion 11b on the other side (right side) protrudes toward the fiber sheet S side at the central portion in the length direction. .

If the molding die 51 has a curved shape in the longitudinal direction, the supporting piece 15 shown in FIG. 9 may be used. FIG. 9 is a cross-sectional view of the support piece. The support piece 15 has a laminated structure including a first portion 56 on the side in contact with the fiber sheet S and a second portion 55 arranged on the opposite side of the fiber sheet S with the first portion 56 interposed therebetween. The first portion 56 can allow the curved shape of the side portion 11 b and is made of a softer (lower rigidity) material than the second portion 55 . The second portion 55 is capable of supporting the fiber sheet S, and is made of a harder (higher rigidity) material than the first portion 56 . The support piece 15 shown in FIG. 9 supports the fiber sheet S at the second portion 55 while allowing the curved shape of the side portion 11 b at the first portion 56 .

[Embodiment 5]
Next, a molding device 60 according to Embodiment 5 will be described with reference to FIG. In order to avoid duplication of description, in the fifth embodiment, portions different from those in the first to fourth embodiments will be described, and portions having the same configurations as those in the first to fourth embodiments will be described with the same reference numerals. 10 is a schematic perspective view of a molding die of a molding apparatus according to Embodiment 5. FIG.

A molding apparatus 60 of the fifth embodiment further includes a heating unit 61 that heats each of the plurality of support pieces 15 of the first embodiment. The support piece 15 is, for example, a heat conductor, and is heated to a predetermined temperature by heating by the heating section 61 . The heating unit 61 heats the plurality of support pieces 15 at different temperatures. Specifically, the heating unit 61 heats the plurality of support pieces 15 so that the closer they are to the bent portion D, the higher the temperature, and the farther from the bent portion D, the lower the temperature.

Therefore, in the molding method using the molding apparatus 60 of Embodiment 5, in step S4 of Embodiment 1, the portion of the fiber sheet S near the bent portion D can be softened by heating. The portion of the fiber sheet S can be made to easily follow the side portion 11b.

As described above, the molding apparatuses 10, 30, 40, 50, and 60 and the molding method according to the present embodiment are grasped as follows, for example.

The forming apparatuses 10, 30, 40, 50, and 60 according to the first aspect are bending portions formed by bending the fiber sheet S in the width direction that extends in the length direction and is orthogonal to the length direction. A molding device 10, 30, 40, 50, 60 for molding into a shape having D, wherein the molding die 11 is provided on one side of the fiber sheet S and serves as a molding material for molding the fiber sheet S; A support member 12 provided on the other side of the sheet S and provided at a portion where the bent portion D is formed and having higher rigidity than the fiber sheet S, a covering member 13 covering the fiber sheet S, and the covering a pressing device (suction device 14) for pressing the fiber sheet S against the mold 11 by means of a member 13, and the support member 12 has a plurality of support pieces 15 divided in the width direction.

According to this configuration, the portion of the fiber sheet S is molded along the molding die 11 while supporting the fiber sheet S while allowing deformation of the fiber sheet S by the plurality of support pieces 15 divided in the width direction. By doing so, the fiber sheet S having the bent portion D can be suitably formed.

As a second aspect, the support piece 15 has a cross-sectional shape orthogonal to the length direction that is formed so as to be out of contact with the adjacent support piece 15 during molding.

According to this configuration, when the fiber sheet S is molded, the adjacent support pieces 15 do not come into contact with each other, so deformation of the fiber sheet S can be suitably allowed.

As a third aspect, at least one of the cross-sectional shape perpendicular to the length direction and the number of divisions of the plurality of support pieces 15 differs according to the shape of the mold 11 .

According to this configuration, it is possible to install a plurality of support pieces 15 corresponding to the shape of the mold 11 .

As a fourth aspect, the intervals between the support pieces 15 adjacent to each other in the width direction are different.

According to this configuration, the portion of the fiber sheet S near the bent portion D can be formed with high accuracy.

As a fifth aspect, the plurality of support pieces 15 are made of different materials, and the closer they are to the bent portion D, the harder they are, and the farther away from the bent portion D, the softer they are.

According to this configuration, the portion of the fiber sheet S near the bent portion D can be favorably supported.

As a sixth mode, the plurality of support pieces 15 have different protrusion heights from the fiber sheet S, and the closer they are to the bent portion D, the higher they are, and the farther they are from the bent portion D, the lower they are.

According to this configuration, the portion of the fiber sheet S near the bent portion D can be brought into early contact with the forming die, so that the occurrence of wrinkles can be suppressed.

As a seventh aspect, when the molding surface of the molding die 11 with which the support member 12 is in contact during molding is curved, the support piece 15 has a curved shape following the molding surface.

According to this configuration, even if the molding surface of the molding die 11 is curved, the support piece 15 can follow the curved surface, and the fiber sheet S can be suitably molded.

As an eighth aspect, when the molding surface of the molding die 11 with which the support member 12 is in contact during molding is a curved surface, the support piece 15 has a first portion 56 on the side in contact with the fiber sheet S and the first portion 56 on the side in contact with the fiber sheet S. It has a laminated structure including a second portion 55 arranged on the opposite side of the fiber sheet S with the first portion 56 interposed therebetween.

According to this configuration, the fiber sheet S can be favorably supported at the second portion 55 while allowing the curved surface of the mold 11 at the first portion 56 .

As a ninth aspect, holding members 16 are provided on both sides of the mold 11 in the width direction and hold both sides of the covering member 13 in the width direction. The covering member 13 has a height capable of being held at the height of the molding die 11 in the direction and the height direction perpendicular to the width direction.

According to this configuration, the covering member 13 can be held at the height of the mold 11 by the holding member 16 , so that the self weight of the covering member 13 can be suppressed from being applied to the fiber sheet S.

As a tenth aspect, a heating unit 61 for heating each of the plurality of support pieces 15 is further provided, and the heating unit 61 has different heating temperatures for the plurality of support pieces 15, and the plurality of support pieces 15 is heated at different temperatures. The temperature of 15 is higher as it is closer to the bent portion D and lower as it is farther from the bent portion D.

According to this configuration, since the portion of the fiber sheet S near the bent portion D can be softened, molding can be performed with high accuracy.

A molding method according to an eleventh aspect is a molding method for molding the fiber sheet into a shape having the bent portion using the molding apparatus, wherein the fiber sheet is placed in the mold. and before and after the step of arranging the fiber sheet, the step of arranging the support member on the opposite side of the mold with the fiber sheet interposed therebetween, corresponding to the site where the bent portion is formed. , disposing the covering member so as to cover the fiber sheet, and pressing the fiber sheet against the mold with the covering member.

According to this configuration, the portion of the fiber sheet S is molded along the molding die 11 while supporting the fiber sheet S while allowing deformation of the fiber sheet S by the plurality of support pieces 15 divided in the width direction. By doing so, the fiber sheet S having the bent portion D can be suitably formed.

REFERENCE SIGNS LIST 10 molding device 11 molding die 11a upper surface portion 11b side surface portion 11c bending portion 11d slope portion 12 support member 13 covering member 14 suction device 15 support piece 16 holding member 17 base 21 stepped portion 30 molding device (second embodiment)
31 molding die 40 molding apparatus (third embodiment)
50 molding device (embodiment 4)
51 mold 55 second part 56 first part 60 molding apparatus (fifth embodiment)
61 heating section S fiber sheet D bending section

Claims (11)

A forming apparatus for forming a fiber sheet into a shape having a bent portion extending in the length direction and bent in the width direction orthogonal to the length direction,
a molding die provided on one side of the fiber sheet and serving as a molding material for molding the fiber sheet;
a support member provided on the other side of the fiber sheet, provided at a portion where the bent portion is formed, and having higher rigidity than the fiber sheet;
a covering member covering the fiber sheet;
a pressing device that presses the fiber sheet against the mold with the covering member,
The molding device, wherein the support member has a plurality of support pieces divided in the width direction. 2. The molding apparatus according to claim 1, wherein the support piece has a cross-sectional shape perpendicular to the length direction that does not come into contact with the adjacent support piece during molding. 3. The molding apparatus according to claim 1, wherein at least one of the cross-sectional shape perpendicular to the length direction and the number of divisions of the plurality of support pieces differs according to the shape of the mold. 4. According to any one of claims 1 to 3, wherein intervals between the support pieces adjacent to each other in the width direction are different intervals, and are narrower closer to the bent portion and wider farther from the bent portion. Molding apparatus as described. 5. The molding apparatus according to any one of claims 1 to 4, wherein the plurality of supporting pieces are made of different materials, and the closer they are to the bend, the harder they are, and the farther they are from the bend, the softer they are. 6. The support pieces according to any one of claims 1 to 5, wherein the plurality of support pieces have different projecting heights from the fiber sheet, and the closer they are to the bend, the higher they are, and the farther they are from the bend, the lower they are. molding equipment. When the molding surface of the mold with which the support member is in contact during molding is curved,
The molding apparatus according to any one of claims 1 to 6, wherein the support piece has a curved shape following the molding surface. When the molding surface of the mold with which the support member is in contact during molding is curved,
2. The support piece has a layered structure including a first portion in contact with the fiber sheet and a second portion disposed on the opposite side of the fiber sheet with the first portion interposed therebetween. 8. The molding apparatus according to any one of items 7 to 7. further comprising holding members provided on both sides of the mold in the width direction and holding both sides of the covering member in the width direction,
9. The holding member has a height capable of holding the covering member at the height of the mold in a height direction orthogonal to the length direction and the width direction. The molding device according to . further comprising a heating unit that heats each of the plurality of support pieces,
The heating unit has different heating temperatures for the plurality of support pieces,
The molding apparatus according to any one of claims 1 to 9, wherein the temperature of the plurality of supporting pieces is higher as it is closer to the bent portion and lower as it is farther from the bent portion. A molding method for molding the fiber sheet into a shape having the bent portion using the molding apparatus according to any one of claims 1 to 10,
placing the fibrous sheet against the mold;
before and after the step of arranging the fiber sheet, arranging the support member on the opposite side of the mold with the fiber sheet interposed therebetween, corresponding to the site where the bent portion is formed;
arranging the covering member to cover the fiber sheet;
and pressing the fiber sheet against the mold with the covering member.

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