JP2022187138A - Production method of fiber resin molding - Google Patents

Abstract

To provide a production method of a fiber resin molding that can be efficiently molded.SOLUTION: A production method of a fiber resin molding 100 by impregnating a laminate 10 containing fibers with resin comprises: a pre-forming step of pre-forming a heated laminate 10 by pressing the heated laminate with a pre-forming mold 1 consisting of an upper mold 20 and a lower mold 30; and a main molding step in which the pre-formed laminate 10 is placed in a molding space S formed by closing a pair of molds 50, and the resin is injected into the molding space S to impregnate the laminate 10 with the resin. The pre-forming step comprises pressing an end part 10A of the laminate 10 against a convex part 31 provided on the lower mold 30 with a size enlargement body 25 provided on the upper mold 20 so as to bend the end part 10A of the laminate 10 along the convex part 31.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a method for producing a fiber resin molding.

Conventionally, the method described in Patent Document 1 is known as a method for producing a fiber resin molding. Specifically, in Patent Document 1, using a heating device such as a dryer, a heating step in which hot air is blown onto a part of the substrate to heat it, and a plurality of suction holes formed on the molding surface of the mold are used to heat the substrate. A method for producing a fiber resin molded article (resin molded article) is disclosed, which includes a molding step of molding the heated portion into a shape that follows the shape of the molding surface by sucking the material.

JP 2016-132202 A

However, in the manufacturing method disclosed in Patent Document 1, it takes time and effort to perform a series of steps including the heating step and the molding step. In addition, when part of the heated base material is formed into the shape of the molding surface, the force may not be uniformly applied to the base material, and the internal structure of the base material may be crushed. In that case, for example, even if the resin is injected into the molded base material to impregnate it, there is a risk that the impregnation will not be successful. On the other hand, when the heated substrate is moved and placed on the molding surface of the molding die, it is desirable to be able to position it accurately.

SUMMARY OF THE INVENTION The present invention has been completed based on the above circumstances, and one of the objects thereof is to provide a method for producing a fiber resin molding that can be efficiently molded. Another object of the present invention is to provide a method for producing a fiber resin molded article that can be molded without crushing the internal structure. Another object of the present invention is to provide a method for manufacturing a fiber resin molding that can be molded while being positioned accurately.

The present invention relates to a method for producing a fiber-resin molded product by impregnating a sheet material containing fibers with a resin, wherein the heated sheet material is pressed by a preforming mold comprising an upper mold and a lower mold. a preforming step of preforming the preformed sheet material, disposing the preformed sheet material in a forming space formed by closing a pair of forming molds, and injecting a resin into the forming space to impregnate the sheet material with the resin. In the preforming step, a shaping body provided in the upper mold presses an end portion of the sheet material against a convex portion provided in the lower mold, so that the sheet material is characterized in that the end portion of is bent along the convex portion.

According to this method of manufacturing a fiber resin molded article, in the preforming step, the preformed article is elastically deformed so as to be in close contact with the convex portion, and the end portion of the sheet material can be pressed against the convex portion. The edge of the sheet material can be bent at once with a uniform force before the sheet material is cooled. Further, since local force is less likely to be applied to the edge of the sheet material, the edge can be bent along the convex portion without crushing the internal structure of the sheet material. Thereby, the sheet material can be suitably impregnated with the resin in the main molding process.

Further, in the preforming step, the film-like formed body can be placed over the end portion of the sheet material and pressed against the convex portion. According to such a method for manufacturing a fiber resin molded article, the film-like shaped body can be further brought into close contact with the projections by sandwiching the edge of the sheet material between the moldings and the projections. As a result, for example, even when the protruding height of the convex portion is relatively high (for example, when the end of the sheet material is formed in a relatively long U-shape), the end of the sheet material can be preferably bent along the convex portion.

Further, in the preforming step, a pulling portion for pulling and extending the shaped body is wrapped around the convex portion to the surface opposite to the surface facing the upper mold, and the end portion of the sheet material can be pressed against the convex portion. According to such a method for manufacturing a fiber resin molded article, the film-like shaped article can wrap around and adhere to the surface opposite to the surface facing the upper mold in the convex portion, so that the sheet material can be formed. It can be suitably bent up to the end of the edge.

Further, in the preforming step, a suction portion provided in a nested manner in the upper mold is advanced from the molding surface of the upper mold to be attracted to the sheet material, and the sheet material is placed at a position facing the lower mold. It can be moved. According to the manufacturing method of the fiber resin molding, the sheet material can be stably attracted to the upper mold and smoothly moved to a position facing the lower mold, and the sheet material can be accurately positioned. can be done.

Further, in the preforming step, the sheet material is placed on the pasted shaped body, the upper mold is pressed against the sheet material to attract the sheet material, and the sheet material is placed at a position facing the lower mold. It can be moved. According to such a method for manufacturing a fiber resin molded article, the sheet material can be preferably attracted to the upper mold and smoothly moved to the position facing the lower mold.

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the manufacturing method of the fiber resin molding which can shape|mold efficiently. Moreover, it is possible to provide a method for producing a fiber resin molded article that can be molded without crushing the internal structure. Furthermore, it is possible to provide a method for manufacturing a fiber resin molding that can be molded while positioning it accurately.

FIG. 4 is a diagram showing a step of adsorbing a heated laminate in the preforming step according to the first embodiment; A diagram showing a process of moving the laminate adsorbed to the upper mold to a position facing the lower mold. Diagram showing the process of bringing the upper mold closer to the lower mold A diagram showing the process of bringing the upper mold closer to the lower mold and advancing the block Diagram showing the process of rotating the block Diagram showing the process of separating the upper mold from the lower mold A diagram showing the process of impregnating the laminate with resin in the main molding process. FIG. 10 is a diagram showing a step of adsorbing a heated laminate in a preforming step according to the second embodiment; The figure which shows the process which moves the laminated body adsorb|sucked to the stamping die to the position facing a lower die. Diagram showing the process of bringing the upper mold closer to the lower mold FIG. 12 is a diagram showing a step of bringing the upper mold closer to the lower mold in the preforming step according to the third embodiment; The figure which shows the process which makes a shaped body approach a convex part. FIG. 11 is a diagram showing a step of moving the upper mold above the attached shaped body in the preforming step according to the fourth embodiment; A diagram showing a process of pressing an upper mold against a pasting forming body and sucking a laminate.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 7. FIG. In the present embodiment, a method for manufacturing a fiber resin molding that constitutes a vehicle seat provided in a passenger compartment of an automobile (vehicle) will be exemplified. As shown in FIG. 1, the fiber resin molded body is a laminated body (sheet material) 10 having a sandwich structure composed of a core material and sheet-like fiber materials laminated on the front and back surfaces of the core material, respectively. It is assumed that the thermosetting resin is impregnated and cured in the main molding process. The core material is made of synthetic resin (made of foamed resin) such as acrylic resin having a closed cell structure. As the raw material of the fibrous material, for example, woven fabric such as carbon fiber or glass fiber, other woven fabric, or non-woven fabric such as felt material can be used. The laminated body 10 is formed by bonding the core material and the fibrous material with an adhesive or the like. The laminate 10 is softened by being heated.

The method of manufacturing the fiber resin molding can be broadly divided into a preforming step in which the heated sheet material 10 is pressed against the preforming mold 1 for preforming, and a pair of forming molds 50 (see FIG. 7) in which the molds are closed. a main molding step of disposing the preformed sheet material 10 in the molding space S and injecting a thermosetting resin into the molding space S to impregnate the sheet material 10 with the resin. As shown in FIG. 2, the preforming die 1 includes an upper die 20 (also called a press die) as a movable die and a lower die 30 as a fixed die. The upper die 20 is attached to a moving device (not shown) such as a robot arm, and is configured to be able to change its position and inclination. As the material of the upper mold 20, resin or metal can be used, and preferably resin such as silicone rubber can be used. As the material of the lower mold 30, resin or metal can be used, and preferably metal such as aluminum can be used.

The upper mold 20 includes a body portion 21 constituting most of the upper mold 20, a suction portion 22 nested in the body portion 21, a cylinder 23 attached to the side of the body portion 21, and a cylinder and a block (pull) 24 attached to a rod 23A of 23. The suction part 22 is provided so as to be able to advance or retreat in the direction of the lower mold 30 on the side of the molding surface (surface facing the lower mold 30) 21A of the main body 21. It is configured such that gas can be sucked from the suction surface 22A side. The cylinder 23 can be extended or contracted by moving the rod 23A forward or backward toward the lower die 30 side. As the cylinder 23, an electric cylinder, a hydraulic cylinder, or a pneumatic cylinder can be adopted. The block 24 is attached to the tip of the rod 23A of the cylinder 23 and can move forward or backward as the rod 23A is displaced. As shown in FIG. 5, the block 24 can be rotated by driving a motor or the like at the tip of the rod 23A so as to wrap around a rear side surface 31B of the protrusion 31, which will be described later. As the material of the block 24, like the upper die 20, a resin such as silicon rubber or a metal such as aluminum may be used.

As shown in FIG. 2 , the lower die 30 includes a plurality of depressions 32 and projections 31 projecting upward from upper portions of the plurality of depressions 32 . The convex portion 31 has a front side surface 31A as a surface facing the upper mold 20, and a back side forming a surface on the back side of the front side surface 31A (a surface on the opposite side of the front surface 31A facing the upper mold 20 in the convex portion 31). and a surface 31B. On the molding surface 21A of the main body 21 of the upper mold 20, a film-like shaping body 25 having elasticity and extensibility is attached to a facing surface 21C that faces the front side surface 31A of the convex portion 31. As shown in FIG. The molded body 25 has one end attached to the facing surface 21C and the other end attached to the block 24 . As the material for the molded body 25, a resin material such as silicone rubber can be used. As shown in FIGS. 4 and 5, the shaped body 25 can be stretched by being pulled by the block 24 that moves forward and rotates. In addition, the shaped body 25 may be, for example, a thin plate-like shape as long as it can be elongated as the block 24 advances or rotates.

As shown in FIG. 1, in the preforming step, first, the laminate 10 is heated by the hot plate 2 to be softened. Then, the upper mold 20 is moved above the layered product 10 and the suction part 22 is advanced to bring the suction surface 22</b>A into close contact with the layered product 10 . In this state, by sucking gas from the suction surface 22A, the stack 10 is sucked and sucked by the suction section 22 . Next, as shown in FIG. 2 , the upper mold 20 is moved so that the laminate 10 lifted by the suction unit 22 faces the molding surface 30A of the lower mold 30 . Then, as shown in FIG. 3, the upper mold 20 is brought closer to the lower mold 30, and the adsorption part 22 is pressed against the molding surface 30A of the lower mold 30 together with the laminate 10. As shown in FIG. At this time, the lower portion of the laminate 10 is bent by the lower portion of the molding surface 30A of the lower mold 30 .

Subsequently, as shown in FIG. 4, the suction part 22 is retracted to a position where the suction surface 22A is flush with the molding surface 21A of the upper mold 20, and the upper mold 20 is brought closer to the lower mold 30. Then, the laminate 10 is pressed by the molding surface 21A of the upper mold 20 and the molding surface 30A of the lower mold 30 . Thereby, the laminate 10 is formed into a shape that follows the shape of the molding surface 21A of the upper mold 20 and the molding surface 30A of the lower mold 30 . For example, the upper portion of the laminate 10 is pressed against the plurality of depressions 32 and bent stepwise.

Here, the edge portion 10A of the laminate 10 is bent along the convex portion 31 by pressing the edge portion 10A of the laminate 10 against the convex portion 31 with the shaping body 25 . Specifically, by extending the cylinder 23 and advancing the block 24 , the film-like shaped body 25 is pulled and extended by the block 24 in the same direction as the upper mold 20 approaches the lower mold 30 . The shaped body 25 is extended to a position beyond the end of the end portion 10A of the laminate 10 to cover the end portion 10A. At this time, hot air may be blown from the 31B side toward the end portion 10A side of the laminate 10 using a dryer or the like.

Then, as shown in FIG. 5, the block 24 at the tip of the rod 23A is rotated so as to wrap around the rear side surface 31B of the projection 31, and the elongated molded body 25 is placed over the end portion 10A of the laminate 10. It is pressed against the convex portion 31 . At this time, the rod 23A may be retracted while the block 24 is being rotated, and the block 24 may press the back surface 31B side of the protrusion 31 . The end portion 10A of the laminate 10 is pressed against the convex portion 31 by the shaped body 25 and the block 24, and is bent to follow the shape of the convex portion 31. As shown in FIG. As shown in FIG. 6, after a predetermined period of time has elapsed, the block 24 is operated in a manner retracing the above procedure, and the cylinder 23 is contracted. Then, by separating the upper mold 20 from the lower mold 30, the laminate 10 in which the end portion 10A is formed (preformed) in a U-shape is obtained.

As shown in FIG. 7, in the main molding step, a pair of molding dies 50 are used to impregnate the laminate 10 with a thermosetting resin (hereinafter simply referred to as resin) to mold the fiber resin molding 100 . The pair of molding dies 50 is composed of an upper die 51 and a lower die 52 arranged at a position facing the upper die 51 . When the upper mold 51 is brought close to the lower mold 52 and the molds are closed, a space provided between them is defined as a molding space S. An injection device 53 for injecting resin into the molding space S is provided in the upper mold 51 . As the resin, for example, a two-liquid mixed type epoxy resin composed of a main agent and a curing agent can be used.

Two preformed laminates 10 and another laminate 11 are arranged in a molding space S formed by closing a pair of molds 50 . At this time, the opposite ends 10B of the two laminates 10 opposite to the ends 10A are arranged so that both ends of another laminate 11 overlap each other. Thereafter, by injecting the resin into the molding space S from the injection device 53, the molding space S is filled with the resin, and the laminates 10 and 11 are impregnated with the resin. By separating the upper mold 51 from the lower mold 52 after the resin impregnated in the laminates 10 and 11 is cured, a fiber resin molding 100 including two laminates 10 and another laminate 11 is obtained. The fiber resin molded body 100 is attached with an elastic pad made of a material such as urethane foam, and a cloth cover member for covering the fiber resin molded body 100 and the pad. The fiber resin molding 100, the pad, and the cover member constitute a vehicle seat. A molded body end portion 100A formed by impregnating the end portion 10A of the laminate 10 with resin is used as a portion on which the cover member is hooked.

Next, the effects of this embodiment will be described. In this embodiment, a method for manufacturing a fiber-resin molding 100 by impregnating a laminate 10 containing fibers with a resin is provided. A preforming step of preforming by pressing with a preforming mold 1, placing a preformed laminate 10 in a forming space S formed by closing a pair of forming molds 50, and injecting a resin into the forming space S. In the preforming step, the end portion 10A of the laminate 10 is formed into a protrusion provided on the lower mold 30 by the shaping body 25 provided on the upper mold 20. The manufacturing method of the fiber resin molding 100 is shown in which the end portion 10A of the laminate 10 is bent along the convex portion 31 by being pressed against the portion 31 .

According to the method for manufacturing the fiber resin molded body 100 as described above, in the preforming step, the shaped body 25 is elastically deformed so as to be in close contact with the convex portion 31, and the end portion 10A of the laminate 10 is pressed against the convex portion 31. Therefore, the end portion 10A of the laminated body 10 can be bent at once with a uniform force before the heated laminated body 10 cools. Since local force is less likely to be applied to the end portion 10A of the laminate 10, the end portion 10A can be bent along the convex portion 31 without crushing the internal structure of the laminate 10. FIG. Thereby, the laminate 10 can be suitably impregnated with the resin in the main molding process.

Further, in the preforming step, the film-like molded body 25 is placed over the end portion 10A of the laminate 10 and pressed against the convex portion 31 . According to the manufacturing method of the fiber resin molded body 100 as described above, the film-shaped molded body 25 can further adhere to the convex portion 31 with the edge portion 10A of the laminate 10 sandwiched between the film-shaped shaped body 25 and the convex portion 31. . As a result, for example, even when the projecting height of the convex portion 31 is relatively high (when the end portion 10A of the laminate 10 is formed in a relatively long U-shape), the laminate 10 The end portion 10A can be preferably bent along the convex portion 31 .

Further, in the preforming step, the block 24 that pulls and extends the shaped body 25 is wrapped around to the surface 31B opposite to the surface 31A facing the upper mold 20 in the convex portion 31, and the end portion of the laminate 10 10A is pressed against the convex portion 31 . According to the manufacturing method of the fiber resin molded body 100, the film-shaped shaped body 25 can wrap around to the surface 31B opposite to the surface 31A facing the upper mold 20 in the convex portion 31 and be in close contact therewith. Therefore, the end portion 10A of the laminate 10 can be suitably bent.

Further, in the preforming step, the adsorption portion 22 provided in the upper die 20 in a nested manner is advanced from the molding surface 21A of the upper die 20 to be adsorbed to the laminate 10, and the laminate 10 is moved to a position facing the lower die 30. move to According to the manufacturing method of the fiber resin molding 100, the laminate 10 can be stably attracted to the upper mold 20 and smoothly moved to a position facing the lower mold 30, thereby positioning the laminate 10. can be performed accurately.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIGS. 8 and 10. FIG. In addition, in this embodiment, the same reference numerals are used for the same portions as those in the above-described embodiment, and redundant descriptions of structures, steps, actions, and effects are omitted. As shown in FIG. 8 , the lower mold 130 is provided on a fixing table 103 that fixes the lower mold 130 . The fixed table 103 is provided with a hot plate 102 in addition to the lower mold 130 . The upper die 112 is vertically movable with respect to the lower die 130 (fixed table 103) by electric power, hydraulic pressure, or pneumatic pressure. The upper die 112 is provided with a stamping die 120 which is horizontally slidably movable between the hot plate 102 and the lower die 130 . The stamping die 120 and the lower die 130 constitute a pair of preforming dies 101 for preforming the laminate 10 . The configuration of the pressing die 120 is the same as that of the upper die 20 shown in the first embodiment.

In the preforming step, first, the laminate 10 is heated by the hot plate 102 to be softened. Then, the stamping die 120 is moved above the hot plate 102 and the adsorption section 22 is advanced to adsorb the laminate 10 . Next, as shown in FIG. 9, the stamping die 120 is slid horizontally so that the laminate 10 lifted by the adsorption portion 22 faces the molding surface 30A of the lower die 130. Moving.

Next, as shown in FIG. 10, by bringing the upper mold 112 close to the lower mold 130, the mold 120 moved above the lower mold 130 is brought close to the lower mold 130, and the laminate 10 is moved to the lower mold 120. The molding surface 21A and the molding surface 30A of the lower mold 130 are pressed together. Thereby, the laminate 10 is formed into a shape following the shape of the molding surface 21A of the stamping die 120 and the molding surface 30A of the lower mold 130 . Then, the end portion 10A of the laminate 10 is bent along the convex portion 31 by pressing the end portion 10A of the laminate 10 against the convex portion 31 with the forming body 25 stretched by being pulled by the block 24, and the end portion A laminated body 10 is obtained in which 10A is formed (preformed) in a U shape.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIGS. 11 and 12. FIG. In addition, in this embodiment, the same reference numerals are used for the same portions as those in the above-described embodiment, and redundant descriptions of structures, steps, actions, and effects are omitted. In the pair of preforming molds 201 , an elastic shaping body 225 is attached at a position on the side of the main body portion 21 of the upper mold 220 and facing the convex portion 31 of the lower mold 30 . The shaping body 225 is provided so as to be displaceable by sliding in the vertical direction electrically, hydraulically, or pneumatically. The shaping body 225 has a concave portion 225</b>A that is recessed in a shape that follows the shape of the convex portion 31 of the lower mold 30 . When the upper mold 220 approaches the lower mold 30 and the shaped body 225 slides downward, the concave portion 225A is fitted to the convex portion 31 so as to cover the convex portion 31 . As the material for the shaped body 225, a resin material such as silicon rubber can be used.

As shown in FIG. 11 , in the preforming step, the laminate 10 adsorbed by the adsorption unit 22 is moved to a position facing the lower mold 30, and the upper mold 220 is brought closer to the lower mold 30, whereby the laminate 10 is formed. , are pressed by the molding surface of the upper mold 220 and the molding surface of the lower mold 30 . Here, the edge portion 10A of the laminate 10 is bent along the convex portion 31 by pressing the edge portion 10A of the laminate 10 against the convex portion 31 with the shaping body 225 . Specifically, as shown in FIG. 12, the shaped body 225 is slid downward toward the lower mold 30 side, and the end portion 10A of the laminate 10 is placed between the concave portion 225A and the convex portion 31 of the lower mold 30. are sandwiched and pressed against the convex portion 31 . The end portion 10A of the laminated body 10 is pressed against the convex portion 31 by the shaped body 225 and is bent so as to follow the shape of the convex portion 31 . After a predetermined period of time has elapsed, the molded body 225 is operated so as to go back through the above procedure. Then, by separating the upper mold 220 from the lower mold 30, the laminate 10 in which the end portion 10A is formed (preformed) into a U-shape is obtained.

<Embodiment 4>
Next, Embodiment 4 of the present invention will be described with reference to FIGS. 13 and 14. FIG. In addition, in this embodiment, the same reference numerals are used for the same portions as those in the above-described embodiment, and redundant descriptions of structures, steps, actions, and effects are omitted. An upper mold 320 of the pair of preforming molds has a plurality of adsorption parts 322 capable of sucking gas. The adsorption part 322 is provided on the side of the upper mold 320 and is not provided on the molding surface 320A of the upper mold 320 . On the other hand, a hot plate 302 for heating the laminate 10 is provided above a spring 304 fixed to a fixing table 303, and is configured to be vertically displaceable. On the upper side of the hot plate 302, a pasting forming body 305, which is a film-like forming body made of silicon rubber or the like, is pasted.

In the preforming step, first, the layered product 10 is placed on the attached shaped body 305, and the laminated body 10 is heated from below the attached shaped body 305 by the hot plate 302 to be softened. At this time, the hot plate 302 may slightly push the pasting forming body 305 upward. Subsequently, the upper mold 320 is moved above the pasting shaped body 305 and pressed against the pasting shaped body 305 as shown in FIG. At this time, the spring 304 that fixes the hot plate 302 contracts, and the upper mold 320 is directed toward the pasting forming body 305 until the laminate 10 is pressed against the forming surface 320A of the upper mold 320 by the tension of the pasting forming body 305. press down. Then, the stack 10 is lifted by sucking the outer peripheral side of the stack 10 with the plurality of suction portions 322 . In this state, the upper mold 320 is moved so that the laminate 10 faces the lower mold (for example, the lower mold 30) shown in the above embodiment.

According to such a method for manufacturing a fiber resin molded body, the laminate 10 can be preferably attracted to the upper mold 320 and smoothly moved to a position facing the lower mold. In addition, since the adsorption part 322 is provided on the side of the upper mold 320, the inside of the adsorbed laminate 10 is not adsorbed (gas is not sucked on the inside), and the laminate 10 is heated and softened. This is preferable because it makes it easier to maintain the state of being held.

<Other embodiments>
The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. can be implemented with various changes.

(1) In the above embodiment, the block is configured to be rotatable at the tip of the rod by being driven by a motor or the like, but the configuration is not limited to this. For example, a second cylinder separate from the first cylinder is provided at the tip of the cylinder (referred to as the first cylinder) in the above embodiment, and the block is rotated by two-stage extension of the first cylinder and the second cylinder. It may be configured to wrap around the rear side surface of the convex portion without moving.

(2) In the above embodiment, the laminate is placed on the hot plate and heated, but the present invention is not limited to this. For example, the laminated body may be heated by roasting it with an IR heater or the like. In this case, after the laminate is adsorbed on the adsorption portion of the upper mold, it may be heated by being heated by an IR heater and moved above the lower mold.

(3) In the above embodiment, the upper die is attached to a moving device (not shown) such as a robot arm, but the present invention is not limited to this. For example, the upper mold may be attached to the tip of a swinging part that can swing like a pendulum between above the hot plate and above the lower mold. In that case, the upper die may be moved by manually swinging the swinging portion.

(4) In the above embodiment, the fiber resin molding constitutes a vehicle seat, but the present invention is not limited to this. For example, the fiber resin molding may constitute other vehicle interior materials such as an upper board of a door trim, an instrument panel, and the like. Moreover, the fiber resin molding is not limited to those provided for automobiles, and may be provided for various vehicles. For example, fiber resin moldings are provided for vehicles such as trains and amusement vehicles as ground vehicles, airplanes and helicopters as flying vehicles, and ships and submarines as sea and undersea vehicles. good too.

Reference Signs List 1, 101, 201 Preforming mold 10 Laminate (sheet material) 20, 120, 220, 320 Upper mold (push mold) 22, 322 Adsorption section 24 Block (tension section) 25, 225 Shaped body 30, 130 Lower mold 31 Convex portion 50 Forming mold 100 Fiber resin molded body S Molding space

Claims (5)

A method for producing a fiber resin molded product by impregnating a sheet material containing fibers with a resin,
a preforming step of preforming the heated sheet material by pressing it with a preforming mold consisting of an upper mold and a lower mold;
A main molding step of disposing the preformed sheet material in a molding space formed by closing a pair of molds and injecting a resin into the molding space to impregnate the sheet material with the resin,
In the preforming step, the end portion of the sheet material is pressed against the convex portion provided in the lower mold by a shaping body provided in the upper mold, so that the end portion of the sheet material is pressed against the convex portion. A method for producing a fiber resin molded product, characterized in that bending is performed along the length of the fiber. 2. The method for producing a fiber resin molded article according to claim 1, wherein in the preforming step, the film-like molded article is placed over the end portion of the sheet material and pressed against the convex portion. In the preforming step, a tensioning portion that pulls and elongates the shaped body is wrapped around the convex portion to the surface opposite to the surface facing the upper mold, and the end portion of the sheet material is stretched as described above. 3. The method for producing a fiber resin molding according to claim 2, wherein the projection is pressed. In the preforming step, suction portions provided in a nested manner in the upper mold are advanced from the molding surface of the upper mold to be attracted to the sheet material, and the sheet material is moved to a position facing the lower mold. The method for producing a fiber resin molding according to any one of claims 1 to 3, characterized in that: In the preforming step, the sheet material is placed on the pasted shaped body, the upper mold is pressed against the sheet material to attract the sheet material, and the sheet material is moved to a position facing the lower mold. The method for producing a fiber resin molding according to any one of claims 1 to 3, characterized in that:

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