JP2016043639A - Molding method and molding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding method and a molding device capable of obtaining a molded part with desired shape and satisfactory physical properties at high precision by satisfactorily maintaining the moldability of a fiber-reinforced resin sheet.SOLUTION: The upper edge faces of a plurality of mounting pins 16a to 16c provided liftably to the lower die 12 are defined as mounting positions, and thereafter, a fiber-reinforced resin sheet 22 is mounted on the upper edge faces not so as to be contacted with a cavity forming face 18. The upper edge faces of the mounting pins 16a to 16c are lowered to a molding position to be made the same with the cavity forming face 18, and further, the lower die 12 and the upper die 14 are closed. At this time, before the upper edge faces reach the molding position, the ratio among the mutual projecting lengths of a plurality of the mounting pins 16a to 16c is controlled so that each upper edge face has an elevation difference in accordance with the rugged shape of the cavity forming face 18. In this way, the fiber-reinforced resin sheet 22 after pre-molding is abutted against the lower die 12 and the upper die 14, and is molded.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a molding method and a molding apparatus for molding a softened fiber reinforced resin sheet by bringing it into contact with a lower mold and an upper mold.

  As a method of obtaining a molded product by molding a fiber reinforced resin sheet, for example, a so-called stamping molding method is known in which a heat-softened fiber reinforced resin sheet is press-molded by contacting a lower mold and an upper mold. ing. That is, in this molding method, a molded product having a desired shape is obtained by filling a fiber reinforced resin sheet into a cavity formed by a lower mold and an upper mold.

  At this time, when the softened fiber-reinforced resin sheet comes into contact with the lower mold and the upper mold (hereinafter collectively referred to as a mold), the mold is deprived of heat and cooling solidification is promoted. For this reason, the fluidity tends to decrease. Therefore, for example, if a fiber reinforced resin sheet is placed on the cavity forming surface of the lower mold prior to clamping the mold, there is a concern that the fluidity at the time of mold clamping will be insufficient. That is, there is a concern that it becomes difficult to sufficiently fill the fiber reinforced resin sheet in the cavity (especially in the recess provided on the cavity forming surface), and a molded product having a desired shape and good physical properties cannot be obtained. is there.

  Therefore, Patent Document 1 proposes a molding method for avoiding contact of the fiber reinforced resin sheet with the cavity forming surface until just before clamping in order to maintain the moldability (fluidity) of the fiber reinforced resin sheet. Yes. Specifically, in this molding method, a mold having a plurality of hold pins that can be moved up and down with respect to the lower mold is used. Prior to clamping the mold, a plurality of hold pins are protruded from the cavity forming surface of the lower mold so that the horizontal positions of the upper end surfaces of the molds are aligned, and a fiber reinforced resin sheet is cavityd on the upper end surface. Place so as not to contact the forming surface. Next, the mold is closed while simultaneously lowering the plurality of hold pins, and the hold pins are accommodated in the lower mold immediately before the cavity forming surface of the upper mold comes into contact with the fiber reinforced resin sheet. Thereafter, the mold is clamped until the clearance between the upper mold and the lower mold reaches the final product thickness. After cooling, the mold is opened to obtain a molded product.

JP-A-8-1698

  In the above molding method, when the mold is closed, the peripheral portion between the peripheral portion of the fiber reinforced resin sheet and the inner portion contacts the cavity forming surface first as compared with the peripheral portion and the inner portion. In some cases, it may be sandwiched between molds. In this case, the peripheral portion is positioned and fixed with respect to the cavity forming surface during the mold clamping. Therefore, in the subsequent mold clamping, it is difficult to draw the peripheral portion side of the fiber reinforced resin sheet into the cavity when the inner portion is brought into contact with the cavity forming surface. As a result, the fiber reinforced resin sheet cannot be sufficiently filled into the cavity, and a part of the material is stretched, and the inside of the cavity is short of material (thin wall). It becomes difficult to apply pressure.

  In the fiber reinforced resin sheet, when the resin that has restrained the reinforcing fibers is melted by being heated, the restraining of the reinforcing fibers is released and a spring back is generated. For this reason, as described above, when a predetermined pressing force cannot be applied by a mold at the time of molding a fiber reinforced resin sheet, the material (reinforcing fiber) is made even if the appearance of the part is as thick as the mold. This means that there is a shortage, and the spring back of the material remains in the molded product. In this case, the material density, the connection between the reinforced resin and the fiber, and the like are lowered, and there is a concern that the physical properties of the molded product are lowered.

  Further, in the molding method described above, when the mold is clamped, it is not sufficiently considered that the heat of the fiber reinforced resin sheet is taken away by contact with the upper mold. In particular, when the fiber-reinforced resin sheet contains a material having high thermal conductivity such as carbon, the influence becomes remarkable, and there is a concern that a molded product having a desired shape and good physical properties cannot be obtained.

  Furthermore, when obtaining the molded article which has a recessed part and a convex part with said shaping | molding method, the convex part and recessed part according to the shape of the molded article are provided in the cavity formation surface of a metal mold | die. That is, as shown in FIG. 12A, the cavity forming surface 2 of the lower mold 1 has a concavo-convex shape provided with convex portions 2a, concave portions 2b and the like. In this case, first, the plurality of hold pins 3 are protruded from the cavity forming surface 2, and the fiber reinforced resin sheet 4 is placed on the upper end surfaces whose horizontal positions are aligned with each other.

  Next, the mold is closed while simultaneously lowering the plurality of hold pins 3. At this time, as shown in FIG. 12B, in the convex portion 2 a, the hold pin 3 is accommodated in the lower mold 1 and comes into contact with the fiber reinforced resin sheet 4 before the other part of the cavity forming surface 2. Further, when the hold pin 3 is lowered and all are housed in the lower mold 1 as shown in FIG. 12C, the cavity forming surface 2, such as the convex portion 6 a provided on the cavity forming surface 6 of the upper mold 5, Each convex part provided in 6 contacts the fiber reinforced resin sheet 4 in advance.

  In this way, when the mold is further closed, the convex portions such as the convex portions 2a and 6a press the fiber-reinforced resin sheet 4 into the concave portions such as the corresponding concave portions 6b and 2b. As a result, a pressurizing force is applied by clamping the mold so that the fiber reinforced resin sheet 4 is brought into contact with the entire cavity forming surfaces 2 and 6 to fill the cavity.

  Therefore, in the molding method described above, there is a time difference until the convex portions of the cavity forming surfaces 2 and 6 are brought into contact with the fiber reinforced resin sheet 4 in advance and then the concave portions are in contact with each other. For this reason, in the contact part 4a of the fiber reinforced resin sheet 4 which each convex part contacted in advance, cooling solidification progresses easily compared with another part.

  Accordingly, when the fluidity of the contact part 4a is lowered during mold clamping, there is a concern that the flow amount (deformation amount) of the other part becomes excessively large. Further, when it is difficult to sufficiently clamp the mold due to, for example, the contact portion 4a solidifying at a thickness larger than the final product thickness before the above pressure is applied, There is a concern that the applied pressure is insufficient. After all, in the above molding method, it is difficult to avoid a decrease in the moldability of the fiber reinforced resin sheet 4 when using a mold having a concave and convex cavity forming surface. Content variation is likely to occur. That is, it is difficult to obtain a molded product having a desired shape and good physical properties with high accuracy.

  The present invention has been made in order to solve the above-described problem. Even when a mold having an uneven cavity forming surface is used, sufficient pressure is applied to the entire fiber reinforced resin sheet to obtain a desired shape. It is another object of the present invention to provide a molding method and a molding apparatus capable of obtaining a molded product having good physical properties with high accuracy.

  To achieve the above object, the present invention provides a molding method in which a softened fiber reinforced resin sheet is brought into contact with a lower die and an upper die, and can be raised and lowered relative to the lower die. The upper end surfaces of a plurality of mounting pins provided on the upper mold are protruded from the cavity forming surface of the lower mold, and the fibers are placed on the upper end surface at a mounting position where the fiber reinforced resin sheet does not contact the cavity forming surface. Placing the reinforced resin sheet and lowering the upper end surface to a molding position flush with the cavity forming surface and closing the lower mold and the upper mold; and the upper end surface is the molding position Before reaching the upper end surface, the ratio of the protruding lengths of the plurality of mounting pins is adjusted so that the upper end surfaces have a height difference corresponding to the uneven shape of the cavity forming surface, and the fibers Pre-molding of reinforced resin sheet The features.

  In this molding method, the fiber reinforced resin sheet is placed on the upper end surface of the placement pin that protrudes to the placement position, so that fiber reinforced prior to clamping of the lower die and the upper die (die). It can suppress that a resin sheet contacts a cavity formation surface and is cooled. That is, it can suppress that the moldability of a fiber reinforced resin sheet falls.

  In addition, when mounting a fiber reinforced resin sheet on the upper end surface in a mounting position, the contact with a cavity formation surface does not need to be avoided in all parts of the fiber reinforced resin sheet. That is, a part of the fiber reinforced resin sheet may be in contact with the cavity forming surface to such an extent that the fluidity is not greatly deteriorated.

  Further, before the upper end surfaces reach the forming position, the ratio of the protruding lengths of the plurality of mounting pins is adjusted so that the upper end surfaces are arranged with a height difference corresponding to the uneven shape of the cavity forming surface. Thus, by mounting on the upper end surface provided with the height difference, a part of the fiber reinforced resin sheet flows and deforms by its own weight. Accordingly, for example, before the peripheral portion of the fiber reinforced resin sheet is sandwiched between the molds, the peripheral portion side is drawn into the cavity in advance, and the fiber reinforced resin sheet is preformed into a shape along the cavity forming surface. be able to. Accordingly, it is possible to effectively suppress a part of the material of the fiber reinforced resin sheet from being stretched during the mold clamping and causing the inside of the cavity to be insufficient.

  Furthermore, even if the cavity forming surface has an uneven shape, the fiber-reinforced resin sheet that has been preformed can be brought into contact with the mold in accordance with the uneven shape. That is, it can suppress that a difference arises in the timing which contacts a cavity formation surface by the site | part of a fiber reinforced resin sheet. By this, it is possible to suppress the occurrence of a site where the fluidity is lowered before pressure is applied to the fiber reinforced resin sheet, and to perform mold clamping in a state where the entire fluidity of the fiber reinforced resin sheet is maintained well Can do.

  As described above, in this molding method, the mold can be clamped by applying a sufficiently large pressing force to the entire fiber reinforced resin sheet. For this reason, even if the fiber reinforced resin sheet is heated and a springback occurs, it can be effectively suppressed that the springback remains in the molded product, and the quality of the molded product can be improved. That is, it becomes possible to obtain a molded product having a desired shape and good physical properties with high accuracy.

  In the above molding method, it is preferable that the upper end face is aligned in the horizontal direction at the placement position. In this case, after placing the fiber reinforced resin sheet, a difference in height is generated between the upper end surfaces. In other words, there is no difference in height between the upper end surfaces when the fiber-reinforced resin sheet is placed. Thus, the fiber reinforced resin sheet can be easily and highly accurately placed at a desired position on the upper end surface, and can be efficiently molded.

  In the molding method described above, when providing a height difference between the upper end surfaces, the height of the upper end surface of the mounting pin protruding from the end side compared to the horizontal center side of the cavity forming surface is set. Higher is preferred. In this case, the space | interval of the upper end surfaces arrange | positioned high among the upper end surfaces which form a height difference can be enlarged. This facilitates flow at the center side of the fiber reinforced resin sheet placed on the upper end surface, and efficiently pulls the peripheral part of the fiber reinforced resin sheet into the cavity while efficiently deforming due to its own weight. Can be generated. Therefore, even if the fiber reinforced resin sheet is made of a high-hardness material that is difficult to deform, for example, it can be preformed well and efficiently.

  In the above molding method, the fiber reinforced resin sheet is held at a plurality of positions by a plurality of holding members, and the distance between the plurality of holding members is adjusted, so that the fiber reinforced resin is formed according to the shape of the cavity forming surface. It is preferable to place the sheet on the upper end surface after preforming the sheet. In this case, the preformed fiber reinforced resin sheet is further preformed by the height difference between the upper end surfaces of the plurality of mounting pins as described above by the holding member, so that a molded product molded with higher accuracy can be obtained. Is possible.

  In the above molding method, before the upper end surface on which the fiber reinforced resin sheet is placed reaches the molding position by a pressing pin provided so as to protrude from the upper mold toward the lower mold. Preferably, the fiber-reinforced resin sheet is pressed and preformed. In this case, even if the depth of the recess provided on the cavity forming surface of the lower mold is large, the fiber reinforced resin sheet can be pressed by the pressing pin toward the inside of the recess. Thereby, the peripheral part side of the fiber reinforced resin sheet can be more actively drawn into the cavity and preformed with higher accuracy. Moreover, it can suppress effectively that a difference arises in the timing which contacts a cavity formation surface by the site | part of a fiber reinforced resin sheet. As a result, the overall fluidity of the fiber reinforced resin sheet can be maintained satisfactorily, sufficient pressure can be applied almost uniformly, and the mold can be clamped, and a molded product with a desired shape and good physical properties can be obtained with high accuracy. It becomes possible to obtain.

  In the molding method described above, a portion of the fiber reinforced resin sheet positioned and fixed by a positioning member on at least one upper end surface of the plurality of mounting pins is a positioning portion, and a relative position of the positioning portion with respect to the cavity forming surface is It is preferable to close the lower mold and the upper mold in a fixed state. By providing the positioning portion as a reference in this way, it is possible to regulate the direction in which the fiber-reinforced resin sheet is drawn into the cavity when closing the mold. Thus, the fiber-reinforced resin sheet can be satisfactorily and easily filled in the cavity, and a molded product molded with higher accuracy can be obtained.

  A molding apparatus to which the above-described molding method is applied is also included in the present invention. That is, the present invention is a molding apparatus for molding by bringing a lower mold and an upper mold into contact with a softened fiber reinforced resin sheet, and an upper end surface is flush with a cavity forming surface of the lower mold. To the lower mold so that the fiber reinforced resin sheet protruding from the molding position and placed on the upper end surface moves between the molding position and the placement position that does not contact the cavity forming surface. A plurality of mounting pins that can be moved up and down, and lowers the upper end surface from the mounting position to the molding position, closes the lower mold and the upper mold, and the upper end surface is the molding position. Before reaching the position, the ratio of the protruding lengths of the plurality of mounting pins is adjusted so that the upper end surfaces have a height difference corresponding to the concavo-convex shape of the cavity forming surface. .

  In this molding apparatus, the fiber reinforced resin sheet can be preformed into a shape along the cavity forming surface by drawing the peripheral portion side into the cavity in advance before clamping. Thereby, at the time of mold clamping, it can suppress that a part of material of a fiber reinforced resin sheet is extended, and can suppress effectively that the inside of a cavity becomes material shortage.

  In addition, since the cavity forming surface of the mold can be brought into contact with the preformed fiber reinforced resin sheet, there is a difference in the timing of contact with the cavity forming surface depending on the portion of the fiber reinforced resin sheet. Can be suppressed. That is, it can suppress that the fluidity | liquidity of a fiber reinforced resin sheet falls partially at the time of mold clamping.

  Therefore, in this molding apparatus, a sufficient pressing force can be applied to the entire fiber reinforced resin sheet almost uniformly to perform clamping, so that a molded product having a desired shape and good physical properties can be obtained with high accuracy. Is possible.

  In the molding apparatus, it is preferable that the upper end surface is arranged in the horizontal direction at the placement position. In this case, the fiber-reinforced resin sheet can be easily and highly accurately placed at a desired position on the upper end surface, and can be efficiently molded.

  In the molding apparatus described above, when the height difference is provided between the upper end surfaces, the height of the upper end surface of the mounting pin protruding from the end side compared to the horizontal center side of the cavity forming surface is set. Higher is preferred. In this case, it is possible to efficiently cause deformation due to its own weight while drawing the peripheral portion side of the fiber reinforced resin sheet into the cavity more effectively. Therefore, even when the fiber reinforced resin sheet is made of a high-hardness material that is difficult to deform, for example, it can be preformed well.

  The molding apparatus further includes a plurality of holding members capable of holding a plurality of positions of the fiber reinforced resin sheet before being placed on the upper end surface, and the holding member holds the fiber reinforced resin sheet. In this state, by adjusting the distance between each other, the fiber reinforced resin sheet preformed according to the shape of the cavity forming surface is placed on the upper end surface, and the holding of the fiber reinforced resin sheet is released. It is preferable. In this case, it becomes possible to obtain a molded product molded with higher accuracy.

  In the molding apparatus, it is preferable that the molding apparatus further includes a pressing pin provided so as to protrude from the upper mold toward the lower mold. In this case, the peripheral portion side of the fiber reinforced resin sheet can be more actively drawn into the cavity, and can be preformed with higher accuracy. Moreover, it can suppress effectively that a difference arises in the timing which contacts a cavity formation surface by the site | part of a fiber reinforced resin sheet. As a result, the entire fluidity of the fiber reinforced resin sheet can be maintained satisfactorily, sufficient pressure can be applied substantially evenly, and a molded product having a desired shape and good physical properties can be obtained with high accuracy. It becomes possible.

  In the molding apparatus, the fiber reinforced resin sheet portion further positioned and fixed by the positioning member is further provided on at least one upper end surface of the plurality of mounting pins, the positioning member fixing the fiber reinforced resin sheet. It is preferable to close the lower mold and the upper mold in a state where the positioning part is set and the relative position of the positioning part with respect to the cavity forming surface is fixed. In this case, the fiber-reinforced resin sheet can be satisfactorily and easily filled in the cavity, and a molded product molded with higher accuracy can be obtained.

  In the present invention, the fiber reinforced resin sheet comes into contact with the cavity forming surface prior to mold clamping by placing the fiber reinforced resin sheet on the upper end surface of the mounting pin that protrudes to the mounting position. It can suppress being cooled.

  Moreover, the fiber reinforced resin sheet is deformed by its own weight by disposing the upper end surface on which the fiber reinforced resin sheet is disposed so as to have a height difference corresponding to the uneven shape of the cavity forming surface. Thus, the fiber reinforced resin sheet can be preformed into a shape along the cavity forming surface by drawing the peripheral portion side into the cavity in advance before mold clamping. Therefore, it is possible to suppress a part of the material of the fiber-reinforced resin sheet from being stretched during mold clamping, and it is possible to effectively suppress the material in the cavity from being insufficient. Furthermore, since the fiber-reinforced resin sheet preformed in this way is formed in contact with the mold, it is possible to suppress the occurrence of a difference in the timing of contact with the cavity forming surface depending on the part of the fiber-reinforced resin sheet.

  As a result, at the time of mold clamping, it becomes possible to maintain the overall fluidity of the fiber reinforced resin sheet satisfactorily and to apply a sufficient pressing force substantially evenly, and to obtain a molded product having a desired shape and good physical properties. It can be obtained with high accuracy.

It is a schematic block diagram which shows the state which mounted the fiber reinforced resin sheet on the upper end surface of the mounting pin protruded from the lower metal mold | die which concerns on 1st Embodiment of this invention to the mounting position. It is a schematic block diagram which shows the state which provided the height difference in the upper end surface of the mounting pin in order to preform the fiber reinforced resin sheet | seat of FIG. It is a schematic block diagram which shows the state which made the upper metal mold approach the lower metal mold | die, moving down the upper end surface of the mounting pin of FIG. It is a schematic block diagram which shows the state which clamped the lower metal mold | die and upper metal mold | die of FIG. The mounting which protrudes from the edge part side compared with the center side of a horizontal direction in order to preform the fiber reinforced resin sheet mounted in the upper end surface of the mounting pin of the shaping | molding apparatus which concerns on 2nd Embodiment of this invention. It is a schematic block diagram which shows the state which enlarged the protrusion length of the pin. It is a schematic block diagram which shows the state which hold | maintained the fiber reinforced resin sheet with the holding member of the shaping | molding apparatus which concerns on 3rd Embodiment of this invention. It is a schematic block diagram which shows the state which adjusted the distance of holding members in order to preform the fiber reinforced resin sheet | seat of FIG. Schematic configuration showing a state in which an upper die is brought close to a lower die while pressing a pressing pin against a fiber reinforced resin sheet placed on an upper end surface of a placement pin of a molding device according to a fourth embodiment of the present invention. FIG. It is a schematic block diagram which shows the state which made the lower metal mold | die and upper metal mold | die of FIG. 8 approached further. It is a schematic block diagram which shows the state which made the upper metal mold approach the lower metal mold, positioning and fixing the fiber reinforced resin sheet between the mounting pin and the positioning member of the molding apparatus according to the fifth embodiment of the present invention. . It is a schematic block diagram which shows the state which made the lower metal mold | die and upper metal mold | die of FIG. 10 approached further. 12A to 12C are schematic explanatory views for explaining a state in which the molding method described in Patent Document 1 is performed using a mold having a concave and convex cavity forming surface.

  Hereinafter, a preferred embodiment of the molding method according to the present invention will be described in detail with reference to the accompanying drawings.

  In the molding method according to the present invention, a softened fiber-reinforced resin sheet is brought into contact with the lower mold and the upper mold and press-molded to obtain a molded product having a desired shape. As a fiber reinforced resin sheet, what impregnated the thermoplastic resin to the fiber base material which made the reinforcing fiber into the sheet form is employable, for example. This fiber substrate may be a single sheet or a plurality of sheets.

<First Embodiment>
The molding method according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4 in relation to the molding apparatus 10 for performing the molding method. The molding apparatus 10 includes a mold including a lower mold 12 and an upper mold 14, and a plurality of mounting pins 16 a, 16 b, and 16 c that can be moved up and down with respect to the lower mold 12. In addition, in FIG.1 and FIG.2, illustration of the upper metal mold | die 14 is abbreviate | omitted.

  The lower mold 12 is a fixed mold, and the upper mold 14 that is a movable mold approaches the lower mold 12 along the vertical direction, and the mold is closed. As a result, a cavity is formed between the cavity forming surface 18 of the lower mold 12 and the cavity forming surface 20 of the upper mold 14. The mold is clamped so that the fiber reinforced resin sheet 22 is filled in the cavity, whereby the fiber reinforced resin sheet 22 is formed into a desired shape. That is, each of the cavity forming surfaces 18 and 20 has an uneven shape corresponding to the shape of a molded product obtained by molding the fiber reinforced resin sheet 22.

  Specifically, as the convex shape of the cavity forming surface 18 of the lower mold 12, the first convex portion 24a, the second convex portion 26a, and the third convex portion 28a are arranged in descending order of protruding height from the lowermost surface 18a. Is provided. As a concave shape corresponding to each of these convex shapes, the cavity forming surface 20 of the upper mold 14 is provided with a first concave portion 24b, a second concave portion 26b, and a third concave portion 28b (see FIGS. 3 and 4). reference). Further, a fourth recess 30 b is provided on the cavity forming surface 18 of the lower mold 12 corresponding to the fourth protrusion 30 a provided on the cavity forming surface 20 of the upper mold 14.

  Each of the mounting pins 16a, 16b, and 16c is provided at a position corresponding to the first convex portion 24a, the second convex portion 26a, and the third convex portion 28a of the cavity forming surface 18 of the lower mold 12. Further, the mounting pins 16a to 16c can be moved up and down independently of each other with respect to the lower mold 12 so that the upper end surfaces of the mounting pins 16a to 16c move between the molding position and the mounting position. These mounting pins 16a to 16c are preferably made of a material having lower thermal conductivity than the lower mold 12 and the upper mold 14, and for example, ceramics such as ceramics can be suitably used.

  At the molding position, the upper end surfaces (hereinafter also simply referred to as upper end surfaces) of the mounting pins 16a to 16c are flush with the cavity forming surface 18 (see FIG. 4). When the mounting pins 16a to 16c are raised from the molding position with respect to the lower mold 12, in other words, when the lengths (projecting lengths) of the mounting pins 16a to 16c protruding from the cavity forming surface 18 are increased. The upper end surface reaches the mounting position (see FIG. 1). In this placement position, when the fiber reinforced resin sheet 22 is placed on the upper end surface, the protruding length is set so that the fiber reinforced resin sheet 22 and the cavity forming surface 18 do not contact each other. Further, at the mounting position, the upper end surfaces are arranged in the horizontal direction.

  In addition, although the case where the cavity formation surfaces 18 and 20 are formed from the above-described concavo-convex shape is described as an example here, of course, the present invention is not limited thereto. The cavity forming surfaces 18 and 20 may be appropriately set in a shape capable of obtaining a molded product having a desired shape, and a plurality of mounting pins may be provided according to the shape of the cavity forming surface. Even in such a case, it is possible to achieve the same effect as the present embodiment.

  A molding method for molding the fiber reinforced resin sheet 22 using the molding apparatus 10 basically configured as described above will be described.

  First, as shown in FIG. 1, the protruding lengths of the mounting pins 16 a to 16 c are adjusted, and the fiber reinforced resin sheet 22 is mounted on the upper end surface protruding to the mounting position. Thus, prior to clamping the mold, the fiber reinforced resin sheet 22 can be disposed between the lower mold 12 and the upper mold 14 without contacting the mold. That is, since it is possible to avoid the heat of the fiber reinforced resin sheet 22 being taken by the mold and cooling and solidifying, it is possible to suppress the fluidity of the fiber reinforced resin sheet 22 from being lowered before the mold is clamped. . Moreover, as described above, the fiber reinforced resin sheet 22 can be easily and highly accurately placed on the upper end surface by arranging the upper end surface along the horizontal direction.

  At this time, as described above, the placement pins 16a to 16c are made of a material having lower thermal conductivity than the mold, so that the heat of the softened fiber reinforced resin sheet 22 is taken away by the placement pins 16a to 16c. Can be suppressed. Thereby, the fluidity | liquidity of the fiber reinforced resin sheet 22 can be maintained favorable. In addition, in order to maintain the fluidity of the fiber reinforced resin sheet 22 more effectively, the mounting pins 16a to 16c may be heated by a heater or the like (not shown).

  Next, as shown in FIG. 2, the protruding lengths of the mounting pins 16 a to 16 c are adjusted so that the upper end surfaces have a height difference corresponding to the shape of the cavity forming surface 18. That is, the mounting pins 16a to 16c are arranged so that the upper end surfaces are arranged corresponding to the heights of the first convex portion 24a, the second convex portion 26a, and the third convex portion 28a of the cavity forming surface 18. Adjust the protrusion length.

  The protruding lengths of the mounting pins 16a to 16c can be adjusted, for example, by setting respective lowering speeds when the mounting pins 16a to 16c are lowered. For example, if the lowering speed of the mounting pin 16b provided on the second convex portion 26a, which is lower than the first convex portion 24a, is larger than that of the mounting pin 16a provided on the first convex portion 24a. Good. Similarly, the lowering speed of the mounting pin 16c may be made larger than that of the mounting pin 16b. The adjustment of the protruding length of the mounting pins 16a to 16c is not limited to setting the descending speed as described above. For example, the mounting length is larger than that of the mounting pin 16c. You may raise the upper end surface of the mounting pins 16a and 16b.

  Accordingly, the fiber reinforced resin sheet 22 placed on the upper end surface hangs down between the placement pins 16a to 16c by its own weight. For this reason, the fiber reinforced resin sheet 22 can be preformed so that the peripheral portion side is drawn into the cavity so as to approximate the shape of the cavity forming surface 18. That is, the space | interval and height difference between mounting pins 16a-16c are adjusted so that the fiber reinforced resin sheet 22 may hang down and approach with respect to the 4th recessed part 30b of the cavity formation surface 18, for example.

  Then, as shown in FIG. 3, in a state where the height difference of the upper end surface is maintained, in other words, in a state where the ratio of the projecting lengths is maintained, the mounting pins 16 a to 16 c are lowered while being lowered. The upper mold 14 is moved closer to the mold 12. That is, for example, after setting the descending speeds of the mounting pins 16a to 16c as described above and adjusting the protruding length, the descending speeds are made to coincide with each other, thereby maintaining the above height difference. The end face can be lowered to the molding position. Each of the mounting pins 16 a to 16 c is lowered while being accommodated in the lower mold 12.

  Therefore, the mold can be closed while preforming the fiber reinforced resin sheet 22 due to the height difference of the upper end surface. For this reason, for example, before the site | part near the periphery of the fiber reinforced resin sheet 22 is clamped by a metal mold | die, the periphery site | part side can be drawn in in a cavity.

  For example, even if the 4th convex part 30a which protrudes from the cavity formation surface 20 of the upper metal mold 14 approaches the fiber reinforced resin sheet 22, it can control effectively that each other contacts. That is, it is possible to avoid the heat of the fiber reinforced resin sheet 22 being taken away by the upper mold 14, and it is possible to effectively suppress the moldability (fluidity) of the fiber reinforced resin sheet 22 from being lowered.

  Furthermore, while lowering the mounting pins 16 a to 16 c, the upper mold 14 is brought close to the lower mold 12, and the mounting pins 16 a to 16 just before the cavity forming surface 20 of the upper mold 14 contacts the fiber reinforced resin sheet 22. The upper end face of 16c is lowered to the molding position. As a result, as shown in FIG. 4, the fiber reinforced resin sheet 22 is brought into contact with the lower mold 12 and the upper mold 14, and the mold is clamped until the clearance between the lower mold 12 and the upper mold 14 reaches the final product thickness. I do. As a result, the fiber reinforced resin sheet 22 is filled in the cavity, and press molding is performed.

  As described above, in this molding method, the fiber reinforced resin sheet 22 is preformed according to the concavo-convex shape of the cavity forming surfaces 18 and 20 while drawing the peripheral portion of the fiber reinforced resin sheet 22 into the cavity. Then, the fiber-reinforced resin sheet 22 that has been preformed in this manner is brought into contact with the mold.

  Thereby, since it can suppress that a part of material of the fiber reinforced resin sheet 22 is stretched at the time of mold clamping, it can suppress effectively that the inside of a cavity becomes material shortage. Moreover, since it can suppress that a difference arises in the timing which contacts the cavity formation surfaces 18 and 20 for every site | part of the fiber reinforced resin sheet 22, in the state which maintained the fluidity | liquidity of the whole fiber reinforced resin sheet 22 favorable. Clamping can be performed.

  As a result, it is possible to clamp the mold by applying a sufficiently large pressing force to the entire fiber reinforced resin sheet 22 substantially evenly. That is, after the fiber-reinforced resin sheet 22 is cooled in such a state of being clamped in this way, a mold having a desired shape and good physical properties can be obtained with high accuracy by opening the mold. .

Second Embodiment
Next, a molding method according to a second embodiment of the present invention will be described with reference to FIGS. 1 to 5 in relation to a molding apparatus 32 for performing the molding method. 5 that have the same or similar functions and effects as those shown in FIG. 1 to FIG. 4 are given the same reference numerals, and detailed descriptions thereof are omitted.

  The molding device 32 is basically configured in the same manner as the molding device 10 described above. A molding method for molding the fiber reinforced resin sheet 22 using the molding device 32 will be described.

  First, as shown in FIG. 1, in the same manner as the molding method using the molding apparatus 10, the protruding lengths of the mounting pins 16a to 16c are adjusted, and the fiber reinforced resin is protruded to the upper end surface protruding to the mounting position. The sheet 22 is placed.

  Next, as shown in FIG. 5, the mounting pins 16a and 16c projecting from both ends in the horizontal direction are arranged such that the upper end surfaces of the mounting pins 16a and 16c are higher than the upper end surface of the center mounting pin 16b. Here, the distance between the mounting pin 16a and the mounting pin 16c is L1, the distance between the mounting pin 16a and the mounting pin 16b is L2, and the distance between the mounting pin 16b and the mounting pin 16c is L3. And At this time, when the height of the upper end surfaces of the mounting pins 16a to 16c is set as described above, the interval between the upper end surfaces at the high position is L1. On the other hand, if the upper end surface of the mounting pin 16b at the center is the highest position, the distance between the upper end surfaces at the higher position is L2 or L3, which is smaller than L1.

  The fiber reinforced resin sheet 22 is more likely to hang down due to its own weight as the distance between the upper end surfaces at higher positions increases. That is, as shown in FIG. 5, by making the height of the upper end surfaces of the mounting pins 16a and 16c larger than the height of the upper end surface of the mounting pins 16b, the peripheral portion side of the fiber reinforced resin sheet 22 is The fiber reinforced resin sheet 22 can be efficiently preformed while being drawn into the cavity more effectively. That is, in the molding method according to the second embodiment, the fiber-reinforced resin sheet 22 can be preformed well and efficiently even when the fiber-reinforced resin sheet 22 is made of, for example, a hard material that is difficult to deform.

  After preforming the fiber reinforced resin sheet 22 in this manner, a molded product can be obtained through the same steps as the molding method using the molding apparatus 10 as shown in FIGS. That is, even in the molding method according to the second embodiment, the fluidity of the entire fiber reinforced resin sheet 22 is maintained satisfactorily, and the mold is clamped so as to apply a pressure force almost uniformly, and is molded with high accuracy. A molded product can be obtained.

<Third Embodiment>
Next, a molding method according to a third embodiment of the present invention will be described with reference to FIGS. 2 to 4, 6, and 7 in relation to a molding apparatus 34 to which the molding method is applied. 6 and 7, those having the same or similar functions and effects as those shown in FIGS. 1 to 5 are designated by the same reference numerals, and detailed description thereof is omitted. Omitted.

  In addition to the configuration of the molding apparatus 10 described above, the molding apparatus 34 further includes a plurality of holding members 36a, 36b, and 36c that can hold a plurality of locations of the fiber reinforced resin sheet 22 (FIGS. 6 and 6). 7). Each of the holding members 36 a to 36 c can be configured in the same manner and includes a piercing pin 38. As such holding members 36a to 36c, for example, a transfer device including a pin described in paragraphs [0008] to [0013] of JP-A-5-228952 can be employed. Therefore, detailed description of the configuration of the holding members 36a to 36c is omitted.

  A molding method for molding the fiber reinforced resin sheet 22 using the molding apparatus 34 will be described. First, as illustrated in FIG. 6, the holding members 36 a to 36 c hold a plurality of locations of the fiber reinforced resin sheet 22 before being placed on the upper end surfaces of the placement pins 16 a to 16 c.

  Next, as shown in FIG. 7, the fiber-reinforced resin sheet 22 is preformed according to the shape of the cavity forming surface 18 by adjusting the distance between the holding members 36 a to 36 c. That is, for example, the fiber reinforced resin sheet 22 between the holding members 36a and 36b is suspended by bringing the holding members 36a and 36b closer to each other while holding the plurality of positions of the fiber reinforced resin sheet 22 as described above. Can be made. For example, the part of the fiber reinforced resin sheet 22 corresponding to the concave shape provided on the cavity forming surface 18 such as the fourth concave portion 30b is suspended. Thereby, the fiber reinforced resin sheet 22 can be preformed according to the shape of the cavity forming surface 18.

  The fiber reinforced resin sheet 22 that has been preformed using the holding members 36a to 36c as described above is placed on the upper end surfaces of the placement pins 16a to 16c that are provided with a height difference corresponding to the shape of the cavity forming surface 18 in advance. 2 to obtain the state shown in FIG. For this reason, in the molding method according to the third embodiment, the fiber-reinforced resin sheet 22 can be preformed with higher accuracy.

  Then, as shown in FIG.3 and FIG.4, a molded product can be obtained by performing the same process as the shaping | molding method using said shaping | molding apparatus 10, and performing mold clamping of a metal mold | die. As a result, in the molding method according to the third embodiment as well, the fluidity of the entire fiber reinforced resin sheet 22 is maintained satisfactorily, and the mold is clamped so as to apply pressure almost uniformly, and is molded with high accuracy. A molded product can be obtained.

<Fourth embodiment>
Next, a molding method according to the fourth embodiment of the present invention will be described with reference to FIGS. 1, 4, 8, and 9 in relation to a molding apparatus 40 to which the molding method is applied. 8 and 9, the same or similar functions and effects as those shown in FIGS. 1 to 7 are given the same reference numerals, and detailed description thereof will be given. Omitted.

  In addition to the configuration of the molding apparatus 10 described above, the molding apparatus 40 further includes a pressing pin 42 provided so as to protrude from the upper mold 14 toward the lower mold 12 (see FIGS. 8 and 9). . When the upper die 14 is brought close to the lower die 12, the pressing pin 42 protrudes from the fourth convex portion 30a toward the fourth concave portion 30b and is placed on the upper end surfaces of the placement pins 16a to 16c. The reinforced resin sheet 22 is pressed. The pressing pin 42 can be accommodated from the base end side in the upper mold 14 so that the protruding length becomes smaller as the mold is closed.

  A molding method for molding the fiber reinforced resin sheet 22 using the molding apparatus 40 will be described. First, as shown in FIG. 1, in the same manner as the molding method using the molding apparatus 10, the protruding lengths of the mounting pins 16a to 16c are adjusted, and the fiber reinforced resin is protruded to the upper end surface protruding to the mounting position. The sheet 22 is placed.

  Next, as shown in FIG. 8, the upper mold 14 is brought closer to the lower mold 12 while providing a height difference according to the shape of the cavity forming surface 18 between the upper end surfaces. At this time, the pressing pin 42 is protruded, and the tip surface thereof is brought into contact with the fiber reinforced resin sheet 22. Thereby, the fiber reinforced resin sheet 22 can be pressed toward the fourth recess 30b side. For this reason, in addition to the height difference of the upper end surface, the peripheral portion of the fiber reinforced resin sheet 22 is more actively pulled into the cavity by the pressing force of the pressing pin 42, and the fiber reinforced resin sheet 22 is It can be preformed to approach the shape.

  Furthermore, as shown in FIG. 9, while maintaining the above-described height difference of the upper end surface and the pressing pin 42, the ratio of the protruding lengths of the mounting pins 16 a to 16 c and the pressing pin 42 is maintained. Close the mold.

  Thereafter, as shown in FIG. 4, a molded product can be obtained by performing the same process as the molding method using the molding apparatus 10 and clamping the mold. The pressing pin 42 may be accommodated in the upper mold 14 so that the tip surface and the fourth convex portion 30a are flush with each other immediately before the fourth concave portion 30b contacts the fiber reinforced resin sheet 22. .

  That is, in the molding method according to the fourth embodiment, the fiber reinforced resin sheet 22 is preformed with high accuracy even when the depth of the concave shape provided in the cavity forming surface 18 of the lower mold 12 is large. be able to. Thereby, it can suppress effectively that a difference arises in the timing which contacts a cavity formation surface by the site | part of the fiber reinforced resin sheet 22. FIG. That is, it is possible to perform mold clamping so that the fluidity of the entire fiber reinforced resin sheet 22 is maintained satisfactorily and pressure is applied almost evenly. As a result, it is possible to obtain a molded product molded with higher accuracy so as to have a desired shape.

  In addition, in said 4th Embodiment, although it decided to close a metal mold | die, maintaining the press by the press pin 42 with respect to the fiber reinforced resin sheet 22, it is not limited to this in particular. For example, when the elasticity of the fiber reinforced resin sheet 22 is relatively small, the pressing by the pressing pin 42 may be released while the mold is closed. That is, the pressing by the pressing pin 42 is applied in any period after the fiber reinforced resin sheet 22 is mounted on the upper end surfaces of the mounting pins 16a to 16c until the upper end surface reaches the molding position. That's fine. By performing preforming in this way, the same effects as described above can be obtained.

<Fifth Embodiment>
Next, a molding method according to a fifth embodiment of the present invention will be described with reference to FIGS. 1, 4, 10, and 11 in relation to a molding apparatus 44 to which the molding method is applied. 10 and 11, the same or similar functions and effects as those shown in FIG. 1 to FIG. 9 are given the same reference numerals, and detailed description thereof will be given. Omitted.

  In addition to the configuration of the molding apparatus 40 described above, the molding apparatus 44 further includes a positioning member 46 that positions and fixes the fiber reinforced resin sheet 22 on at least one upper end surface of the mounting pins 16a to 16c (FIG. 10). And FIG. 11).

  In the illustration of FIG.10 and FIG.11, the positioning member 46 is comprised from the pin which can protrude toward the upper end surface of the mounting pin 16a. That is, the positioning member 46 is provided so as to be movable up and down with respect to the upper mold 14, and sandwiches the fiber reinforced resin sheet 22 between the upper end surfaces of the mounting pins 16 a protruding from the lower mold 12. By this clamping, it is possible to provide a positioning portion that is positioned and fixed to the upper end surface of the mounting pin 16 a with respect to the fiber reinforced resin sheet 22. That is, the mold can be closed in a state where the relative position of the positioning portion with respect to the cavity forming surfaces 18 and 20 is fixed.

  The positioning member 46 can also be accommodated from the base end side in the upper mold 14 so that the protruding length becomes smaller as the mold is closed, as in the case of the pressing pin 42 described above. ing.

  A molding method for molding the fiber reinforced resin sheet 22 using the molding apparatus 44 will be described. First, as shown in FIG. 1, in the same manner as the molding method using the molding apparatus 10, the protruding lengths of the mounting pins 16a to 16c are adjusted, and the fiber reinforced resin is protruded to the upper end surface protruding to the mounting position. The sheet 22 is placed.

  Next, as shown in FIG. 10, the positioning member 46 is projected from the upper mold 14 toward the upper end surface of the mounting pin 16 a, and is sandwiched between the upper end surface and the lower end surface of the positioning member 46. In this manner, the fiber reinforced resin sheet 22 is positioned and fixed with respect to the upper end surface of the mounting pin 16a, thereby providing a positioning portion on the fiber reinforced resin sheet 22. In this state, while providing the height difference according to the shape of the cavity forming surface 18 between the upper end surfaces of the mounting pins 16a to 16c, the upper die 14 is brought close to the lower die 12 and the pressing pin 42 The front end surface is brought into contact with the fiber reinforced resin sheet 22.

  Thereby, in addition to the above-described height difference of the upper end surface, the mold can be closed while the fiber reinforced resin sheet 22 is preformed by the pressing force of the pressing pin 42. At this time, since the positioning portion does not move from the upper end surface of the placement pin 16a, the direction in which the fiber reinforced resin sheet 22 is drawn into the cavity can be regulated.

  Further, as shown in FIG. 11, the placement pins 16 a to 16 c, the pressing pin 42, and the positioning member are used to maintain the above-described height difference of the upper end surface, pressing by the pressing pin 42, and positioning and fixing by the positioning member 46. The mold is closed while maintaining the ratio of the 46 protruding lengths. Thus, in the molding method according to the fifth embodiment, the mold can be closed while the fiber-reinforced resin sheet 22 is satisfactorily and easily filled in the cavity.

  Thereafter, as shown in FIG. 4, a molded product can be obtained by performing the same process as the molding method using the molding apparatus 10 and clamping the mold. The positioning member 46 may be accommodated in the upper die 14 at substantially the same timing as the placement pin 16a is accommodated in the lower die 12.

  As a result, the fluidity of the entire fiber reinforced resin sheet 22 can be maintained satisfactorily, and the mold can be clamped so as to apply a pressure force substantially evenly, and a molded product molded with higher accuracy can be obtained.

  In addition, this invention is not specifically limited to above-described embodiment, Of course, a various deformation | transformation is possible in the range which does not deviate from the summary.

  For example, in the above embodiment, the upper end surfaces of the mounting pins 16a to 16c at the mounting position are arranged so as to be aligned in the horizontal direction, but the present invention is not particularly limited thereto. For example, the upper end surface may be arranged in advance so that a height difference along the cavity forming surfaces 18 and 20 is formed, and the upper end surface depends on the shape of the fiber reinforced resin sheet 22 or the molded product. The fiber reinforced resin sheet 22 may be arranged so as to be easily placed.

  Further, the molding device 44 according to the fifth embodiment may not include the pressing pin 42.

  Furthermore, in said 5th Embodiment, the positioning member 46 was comprised from the pin which can protrude toward the upper end surface of the mounting pin 16a. However, the positioning member 46 may sandwich the fiber reinforced resin sheet 22 between the upper end surfaces of the mounting pins 16b and 16c other than the mounting pin 16a, and the fiber reinforced resin sheet between the plurality of upper end surfaces. A plurality may be provided so as to sandwich 22.

  Moreover, the positioning member 46 should just be the structure which can fix the fiber reinforced resin sheet 22 to the at least one upper end surface of mounting pin 16a-16c, and does not need to be comprised from said pin. For example, the positioning member can be composed of a protrusion that protrudes from the upper end surface and is pierced by the fiber reinforced resin sheet 22.

  Further, the positioning member 46 is not limited to the configuration in which the fiber reinforced resin sheet 22 is fixed to at least one upper end surface of the placement pins 16a to 16c. For example, the positioning member 46 may be provided so as to protrude toward the cavity forming surface 18 so as to sandwich the fiber reinforced resin sheet 22 between the positioning member 46 and the cavity forming surface 18 of the lower mold 12.

  In the second embodiment, after placing the fiber reinforced resin sheet 22 with the upper end surfaces of the placement pins 16a to 16c as placement positions, both end portions in the horizontal direction as compared with the placement pins 16b on the center side. The height of the upper end surface of the mounting pins 16a and 16c on the side was increased. However, it is not particularly limited to this. For example, you may arrange | position so that the upper end surface of the mounting pin 16b of the center side may become higher than the upper end surface of the mounting pins 16a and 16c of the both ends. Thereby, before performing mold clamping, the peripheral part of the fiber reinforced resin sheet 22 can be drawn into the cavity in advance.

  Therefore, after that, the upper end surfaces of the mounting pins 16a to 16c are made to have a height difference corresponding to the shape of the cavity forming surface 18, and when performing mold clamping while maintaining the height difference, the fiber reinforced resin sheet 22 is placed in the cavity. It can be fully filled. In other words, as described above, it is possible to avoid a lack of material (thin wall) in the cavity as much as the peripheral part has been drawn into the cavity in advance. It becomes possible to do. Thereby, the springback of the fiber reinforced resin sheet 22 can be suppressed, and it can suppress that the content rate of the reinforced fiber per unit volume of the obtained molded article falls. As a result, it is possible to effectively avoid a decrease in physical properties such as strength and rigidity of the molded product.

  Further, as described above, after arranging the upper end surface of the mounting pin 16b to be higher than the upper end surfaces of the mounting pins 16a and 16c, for example, the positioning member 46 protrudes toward the cavity forming surface 18 or the like. You may let them. That is, the peripheral portion of the fiber reinforced resin sheet 22 may be sandwiched between the cavity forming surface 18 and the positioning member 46 and the fiber reinforced resin sheet 22 may be positioned and fixed with respect to the upper end surface. By performing mold clamping in this state, it is possible to effectively suppress the peripheral portion of the drawn fiber-reinforced resin sheet 22 from being returned to the original position. For this reason, it is possible to satisfactorily apply a predetermined pressing force by the mold to the fiber reinforced resin sheet 22 filled more satisfactorily in the cavity.

  By the way, when mold clamping is performed and the fiber reinforced resin sheet 22 is accommodated in the recess of the cavity forming surface 18, the side surface forming the recess and the fiber reinforced resin sheet 22 are in contact with each other and friction is likely to occur. Due to the influence of this friction, the fiber reinforced resin sheet 22 is likely to be thinned near the concave portion of the cavity forming surface 18.

  Therefore, as described above, it is preferable that the center-side mounting pin 16 b that increases the height of the upper end surface is provided so as to be able to protrude from the recess of the cavity forming surface 18. In this case, before mold clamping, the fiber reinforced resin sheet 22 can be drawn into the cavity around the portion to be accommodated in the recess. As a result, the fiber-reinforced resin sheet 22 can be satisfactorily accommodated in the recess, and the above-described thinning can be effectively suppressed.

  In the molding method and the molding apparatus 10, 32, 34, 40, 44 according to the present invention, when the fiber reinforced resin sheet 22 is placed on the upper end surface at the placement position, in all parts of the fiber reinforced resin sheet 22, Contact with the cavity forming surface 18 need not be avoided. That is, a part of the fiber reinforced resin sheet 22 may be in contact with the cavity forming surfaces 18 and 20 to such an extent that the fluidity is not greatly deteriorated.

DESCRIPTION OF SYMBOLS 1,12 ... Lower metal mold 2, 6, 18, 20 ... Cavity formation surface 2a, 6a ... Convex part 2b, 6b ... Concave part 3 ... Hold pin 4, 22 ... Fiber reinforced resin sheet 4a ... Contact part 5, 14 ... Top Mold 10, 32, 34, 40, 44 ... Molding device 16a, 16b, 16c ... Mounting pin 18a ... Bottom surface 24a ... First convex part 24b ... First concave part 26a ... Second convex part 26b ... Second concave part 28a ... 3rd convex part 28b ... 3rd recessed part 30a ... 4th convex part 30b ... 4th recessed part 36a, 36b, 36c ... Holding member 38 ... Piercing pin 42 ... Pressing pin 46 ... Positioning member

Claims (12)

A molding method in which the softened fiber reinforced resin sheet is molded by contacting the lower mold and the upper mold,
The upper end surfaces of a plurality of mounting pins provided so as to be movable up and down with respect to the lower mold are protruded from the cavity forming surface of the lower mold, and the fiber-reinforced resin sheet is not in contact with the cavity forming surface The fiber reinforced resin sheet is placed on the upper end surface at a position, the upper end surface is lowered to a molding position flush with the cavity forming surface, and the lower mold and the upper mold are closed. And
The ratio of the protruding lengths of the mounting pins to each other so that the upper end surfaces have a height difference corresponding to the concavo-convex shape of the cavity forming surface before the upper end surfaces reach the molding position. And a preforming method for the fiber-reinforced resin sheet. The molding method according to claim 1,
The molding method characterized in that the upper end surface is arranged in the horizontal direction at the placement position. The molding method according to claim 1 or 2,
When providing the height difference between the upper end surfaces, the height of the upper end surface of the mounting pin protruding from the end side is made higher than the horizontal central side of the cavity forming surface, Forming method. In the shaping | molding method in any one of Claims 1-3,
After preforming the fiber reinforced resin sheet according to the shape of the cavity forming surface by holding a plurality of locations of the fiber reinforced resin sheet with a plurality of holding members and adjusting the distance between the plurality of holding members. The molding method characterized by being placed on the upper end surface. In the molding method according to any one of claims 1 to 4,
The fiber reinforced resin sheet is placed before the upper end surface on which the fiber reinforced resin sheet is placed reaches the molding position by a pressing pin provided so as to protrude from the upper mold toward the lower mold. A molding method characterized by pre-molding by pressing. In the shaping | molding method in any one of Claims 1-5,
In a state where the position of the fiber reinforced resin sheet positioned and fixed by a positioning member is set as a positioning site on at least one upper end surface of the plurality of mounting pins, and the relative position of the positioning site with respect to the cavity forming surface is fixed, A molding method comprising closing a lower mold and the upper mold. A molding apparatus for molding by bringing a lower mold and an upper mold into contact with a softened fiber reinforced resin sheet,
A molding position where the upper end surface is flush with the cavity forming surface of the lower mold, and a placement where the fiber reinforced resin sheet placed on the upper end surface does not contact the cavity forming surface A plurality of mounting pins provided to be movable up and down with respect to the lower mold so as to move between positions;
While lowering the upper end surface from the placement position to the molding position, close the lower mold and the upper mold,
Before the upper end surface reaches the molding position, the ratio of the protruding lengths of the plurality of mounting pins is adjusted so that the upper end surfaces differ in height according to the uneven shape of the cavity forming surface. A molding apparatus characterized by that. The molding apparatus according to claim 7, wherein
The molding apparatus, wherein the upper end surface is arranged in a horizontal direction at the installation position. The molding apparatus according to claim 7 or 8,
When providing the height difference between the upper end surfaces, the height of the upper end surface of the mounting pin protruding from the end side is made higher than the horizontal central side of the cavity forming surface, Forming equipment. The molding apparatus according to any one of claims 7 to 9,
A plurality of holding members capable of holding a plurality of locations of the fiber reinforced resin sheet before being placed on the upper end surface;
The holding member places the fiber reinforced resin sheet preformed on the upper end surface according to the shape of the cavity forming surface by adjusting the distance between the holding members while holding the fiber reinforced resin sheet. And releasing the holding of the fiber-reinforced resin sheet. In the shaping | molding apparatus of any one of Claims 7-10,
The molding apparatus further comprising a pressing pin provided so as to protrude from the upper mold toward the lower mold. In the shaping | molding apparatus of any one of Claims 7-11,
A positioning member for positioning and fixing the fiber-reinforced resin sheet on at least one upper end surface of the plurality of mounting pins;
A portion of the fiber reinforced resin sheet positioned and fixed by the positioning member is used as a positioning portion, and the lower mold and the upper mold are closed in a state where the relative position of the positioning portion with respect to the cavity forming surface is fixed. A forming device.

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