JP2017136794A - Molding method and molding device for resin member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding method and a molding device for a resin member, capable of press molding the resin member at a state with reducing temperature reduction of a heated thermoplastic resin material.SOLUTION: In a first process, a frame shape jig 22 with a peripheral end part 26S side of a tabular or sheet-like thermoplastic resin material 26 attached is heated in a heating furnace. In a second process after the first process, the jig 22 taken from the heating furnace is slid along a rail 20 by hitting a stopper and the thermoplastic resin material 26 is arranged at a position between an upper die 12 and a lower die 14 and departing from both of the upper die 12 and the lower die 14 in upper and lower directions. In a third process after the second process, the thermoplastic resin material 26 is mold closed by the upper die 12 and the lower die 14 and press molded.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a resin member molding method and molding apparatus.

  Techniques for molding a thermoplastic resin material with a mold are known (see, for example, Patent Documents 1 and 2). In such a technique, for example, after the thermoplastic resin material is heated in a heating furnace, the thermoplastic resin material is taken out of the heating furnace and placed in a predetermined position of the lower mold, and the thermoplastic resin material is placed in the upper mold and Some types are press-molded with a lower mold.

JP-A-6-304945 JP 2002-59477 A

  However, in such a technique, for example, if it takes a long time for positioning the thermoplastic resin material at a predetermined position of the lower mold, the process from taking out the thermoplastic resin material from the heating furnace until press molding is performed. Since time also becomes long, the temperature fall of a thermoplastic resin material will become large by that much. Further, if the time from when the thermoplastic resin material is arranged in the lower mold until the press molding is long, the thermoplastic resin material is also cooled by the lower mold. And when the temperature fall of a thermoplastic resin material is large, a moldability will deteriorate.

  In view of the above fact, an object of the present invention is to obtain a molding method and a molding apparatus for a resin member that can be press-molded in a state in which a temperature drop of a heated thermoplastic resin material is suppressed.

  The molding method of the resin member of the present invention described in claim 1 includes a first step of heating a frame-shaped jig to which a peripheral end side of a plate-like or sheet-like thermoplastic resin material is attached in a heating furnace, After the first step, the jig taken out of the heating furnace is slid along the guide member until it hits the stopper, and the thermoplastic resin material is placed between the upper mold and the lower mold and between the upper mold and the lower mold. A second step of disposing at a position away from both in the vertical direction; and a third step of pressing and molding the thermoplastic resin material with the upper mold and the lower mold after the second process, Have.

  According to the said structure, at a 1st process, the frame-shaped jig with which the peripheral edge part side of the plate-shaped or sheet-shaped thermoplastic resin material was attached is heated with a heating furnace. In the second step after the first step, the jig taken out of the heating furnace is slid along the guide member until it hits the stopper, and the thermoplastic resin material is placed between the upper die and the lower die and between the upper die and the lower die. It arrange | positions in the position away from the up-down direction from both. As a result, the time required for positioning the thermoplastic resin material can be suppressed, and the thermoplastic resin material before press molding can be suppressed from being cooled by the upper mold and the lower mold. Moreover, since the jig is heated in the first step together with the thermoplastic resin material, it is possible to suppress the thermoplastic resin material from being cooled by the jig. In the third step after the second step, the thermoplastic resin material is clamped with an upper die and a lower die and press-molded.

  According to a second aspect of the present invention, there is provided the method for molding a resin member according to the first aspect, wherein the upper mold is a convex mold and the lower mold is a concave mold. The thermoplastic resin material in a state where the center portion is bent downward is attached to the jig that is slid along the guide member in two steps.

  According to the above configuration, the thermoplastic resin material can be easily fitted to the concave lower mold in the third step because the central portion of the thermoplastic resin material is bent downward in the previous stage of the third step. Therefore, it is possible to improve the formability when the lower mold has a deep dent.

  According to a third aspect of the present invention, there is provided a molding method for a resin member according to the first aspect, wherein the thermoplastic resin material is disposed apart from the inner side of the jig and the periphery of the thermoplastic resin material. A spring member is provided between the end side and the jig to pull the peripheral end of the thermoplastic resin material toward the jig.

  According to the above configuration, since the peripheral end portion of the thermoplastic resin material is pulled to the jig side by the spring member, a tensile force from the center portion side to the peripheral end portion side acts on the thermoplastic resin material. . For this reason, in a 3rd process, even if the molding surface of an upper mold | type and a lower mold | die is a complicated shape, a thermoplastic resin material can be made to flow to the peripheral edge part side. That is, even if the molding surfaces of the upper mold and the lower mold have complicated shapes, the moldability can be improved.

  According to a fourth aspect of the present invention, there is provided the resin member molding method according to any one of the first to third aspects, wherein the peripheral end portion of the thermoplastic resin material is thickened by a pair of plate members. The overlapping portion between the peripheral end portion of the thermoplastic resin material and the pair of plate members is clamped in a direction and is attached to the jig directly or via a member.

  According to the above configuration, the peripheral portion of the thermoplastic resin material is bolted in a state where the peripheral end portion is sandwiched between the pair of plate members in the thickness direction, for example, the peripheral end portion of the thermoplastic resin material. It is possible to hold the peripheral end portion of the thermoplastic resin material in a wider range than when the bolt is directly bolted. And, when a load acts on the peripheral end portion side of the thermoplastic resin material in the third step or the like, compared to the case where the peripheral end portion of the thermoplastic resin material is directly bolted, the thermoplastic resin material It can suppress that a local load acts on a peripheral edge part. Therefore, the breakage of the peripheral end portion of the thermoplastic resin material is effectively suppressed.

  The molding apparatus of the present invention described in claim 5 is provided on one side of the upper mold and the lower mold that can be opened and closed, and on both sides of the one molding surface. The pair of guide members and the pair of guide members can be placed and slidable along the pair of guide members, and the peripheral end side of the plate-like or sheet-like thermoplastic resin material is attached. A frame-shaped jig provided with a mounted portion, and a displacement of the jig that is provided on the one side of the upper mold and the lower mold and slides along the pair of guide members. A stopper that restricts the inner mold between the upper mold and the lower mold in a state of reaching between the molding surfaces, and the upper mold and the lower mold are opened and the frame inner side of the jig is the upper mold. In the state of being placed between the molding surfaces of the mold and the lower mold, Each molding surface when viewed from the side of the upper mold and the lower mold is set to a position apart vertical direction of the apparatus from the jig.

  According to the above configuration, the upper mold and the lower mold can be opened and closed, and a pair of guide members and stoppers are provided on one side of the upper mold and the lower mold. The pair of guide members are arranged on both sides of the one molding surface, and the frame-shaped jig that can be placed on the pair of guide members is slidable along the pair of guide members. . And the displacement of the jig | tool which slides along a pair of guide member is restrict | limited by a stopper in the state which the frame inner side of the jig | tool reached between each shaping | molding surface of an upper mold | type and a lower mold | type.

  Here, the frame-shaped jig is provided with a mounted portion to which the peripheral end portion side of the plate-shaped or sheet-shaped thermoplastic resin material is attached, so that the thermoplastic resin material is heated in a state of being previously attached to the jig, If the jig heated with the thermoplastic resin material is slid along the pair of guide members, the heated thermoplastic resin material can be placed in the molding position in a short time. In this case, since the jig is heated together with the thermoplastic resin material, it is possible to prevent the thermoplastic resin material from being cooled by the jig. Further, in the present invention, when the upper mold and the lower mold are opened and the inner side of the jig is disposed between the molding surfaces of the upper mold and the lower mold, the upper mold and the lower mold are viewed from the side of the jig. The molding surfaces of the mold and the lower mold are set at positions away from the jig in the vertical direction of the apparatus. For this reason, when the thermoplastic resin material is arranged inside the frame of the jig, the upper mold and the lower mold are opened, and the thermoplastic resin material is between the molding surfaces of the upper mold and the lower mold. In this state, the thermoplastic resin material is arranged at a position away from the upper die and the lower die in the vertical direction of the apparatus, so that the thermoplastic resin material before press molding is cooled by the upper die and the lower die. Can be suppressed.

  A molding apparatus according to a sixth aspect of the present invention is the molding apparatus according to the fifth aspect, wherein one end side of a spring member that applies a tensile force to the thermoplastic resin material is attached to the jig.

  According to the above configuration, for example, when the thermoplastic resin material smaller than the jig is arranged away from the inside of the frame of the jig and the spring member pulls the peripheral end side of the thermoplastic resin material to the jig side, the thermoplastic resin Tension acts on the material from the center side to the peripheral end side. For this reason, at the time of press molding, even if the molding surfaces of the upper mold and the lower mold have complicated shapes, the thermoplastic resin material can be flowed to the peripheral end side. That is, even if the molding surfaces of the upper mold and the lower mold have complicated shapes, the moldability can be improved.

  As described above, according to the present invention, there is an excellent effect that press molding can be performed in a state in which the temperature drop of the heated thermoplastic resin material is suppressed.

It is sectional drawing of the apparatus front view which simplifies and shows a part of shaping | molding apparatus which concerns on the 1st Embodiment of this invention. FIG. 1A shows a mold open state (state at the end of the second step). FIG. 1B shows the mold clamping state (third process). FIG. 2A shows the first step. FIG. 2B shows a state where the jig is going to slide along the rail in the second step. FIG. 2C shows a state where the jig hits the stopper in the second step. It is a disassembled perspective view which shows the state before attaching a thermoplastic resin material to the jig of FIG. It is an expansion perspective view which shows the attachment structure by the side of the peripheral end part of the thermoplastic resin material in the modification of 1st Embodiment. It is sectional drawing of the apparatus front view which simplifies and shows a part of shaping | molding apparatus which concerns on the 2nd Embodiment of this invention. FIG. 5A shows the mold open state (state at the end of the second step). FIG. 5B shows the mold clamping state (third process). It is a perspective view which shows the state by which the peripheral edge part side of the thermoplastic resin material was attached to the jig shown by FIG. 5 (A). It is a perspective view which shows the state by which the peripheral edge part side of the thermoplastic resin material was attached to the jig in the 3rd Embodiment of this invention.

[First Embodiment]
A molding apparatus and a resin member molding method according to a first embodiment of the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the front side of the molding apparatus, an arrow UP indicates the upper side of the molding apparatus, and an arrow W indicates the apparatus when the molding apparatus is viewed from the front. The width direction is shown.

  FIG. 1 is a longitudinal sectional view of the molding apparatus according to the present embodiment, as viewed from the front of the apparatus in a simplified state. FIG. 1A shows the mold open state (state at the end of the second step), and FIG. 1B shows the mold clamped state (third step).

  As shown in FIG. 1A, the molding apparatus 10 has an upper mold 12 and a lower mold 14 that can be opened and closed. The upper mold 12 is fixed to the surface plate 16 and is movable together with the surface plate 16 in the mold clamping direction (arrow D direction) and the mold opening direction (arrow U direction). The upper mold 12 is, for example, a convex molding mold (mold), and a convex surface 12A is formed on the molding surface 12A of the upper mold 12 so as to protrude downward from the base 12B. A die cutting gradient is given to the side surface portion 12X of the convex portion 12C. The lower mold 14 is a concave mold (mold) fixed to the base 18. The molding surface 14A of the lower die 14 is formed with a concave portion 14C that is recessed downward from the base portion 14B. The concave portion 14C corresponds to the convex portion 12C of the upper die 12. A die cutting gradient is applied to the side surface portion 14X of the concave portion 14C.

  A pair of rails 20 as guide members are disposed on both sides of the molding surface 12A of the upper mold 12 on the upper mold 12 side, which is one side of the pair of upper mold 12 and lower mold 14. The pair of rails 20 are fixed to the surface plate 16. The pair of rails 20 have a substantially U-shape (substantially U-shape) that is open to the sides facing each other as viewed from the front of the apparatus shown in FIG. That is, the rail 20 includes an upper wall portion 20A fixed to the surface plate 16, a lower wall portion 20C disposed opposite to the upper wall portion 20A, and the widths of the upper wall portion 20A and the lower wall portion 20C in the apparatus front view. A side wall portion 20B that vertically connects end portions on the outer side in the direction. FIG. 2C shows a reduced cross-sectional view taken along the line 2C-2C in FIG. As shown in FIG. 2C, the rail 20 is a long member laid in a straight line along the longitudinal direction of the apparatus over the entire length.

  As shown in FIGS. 1 (A) and 2 (C), a metal (for example, aluminum alloy, stainless steel) jig 22 can be placed on the pair of rails 20. In FIG. 3, the jig 22 is shown in a perspective view. As shown in FIG. 3, the jig 22 is formed in a rectangular frame shape, and extends by bending upward from the bottom wall portion 22A constituting the lower end portion and the outer edge of the bottom wall portion 22A. Four side wall portions 22B. The side wall portion 22 </ b> B constitutes four vertical wall portions of the jig 22. As shown in FIG. 1A, when the jig 22 is placed on the pair of rails 20, the bottom wall portion 22A of the jig 22 is supported by the lower wall portion 20C of the rail 20 and the side wall of the jig 22 is supported. The portion 22B is disposed adjacent to the side wall portion 20B of the rail 20. As shown in FIGS. 1A, 2B, and 2C, the jig 22 is slidable along the pair of rails 20, and a thermoplastic resin material 26, which will be described later, is formed. Used when loading into the apparatus 10. The rail 20 is provided to guide and install the jig 22 and regulates the position of the jig 22 in the apparatus width direction.

  As shown in FIG. 3, the jig 22 includes a stud bolt 24 as an attached portion protruding upward from the four corners of the bottom wall portion 22A. A plate-like or sheet-like thermoplastic resin material 26 side is attached to the stud bolt 24. In the present embodiment, holes 26A are formed through the four corners of the peripheral end portion 26S of the thermoplastic resin material 26, and nuts 28 are screwed onto the stud bolts 24 that penetrate the holes 26A from below. Thus, the peripheral end portion 26 </ b> S of the thermoplastic resin material 26 is attached to the jig 22. 2B and 2C, the illustration of the hole portion 26A, the stud bolt 24, and the nut 28 shown in FIG. 3 is omitted for easy understanding of the drawing.

  The thermoplastic resin applied to the thermoplastic resin material 26 is not particularly limited, and various known thermoplastic resins can be applied depending on the purpose. Examples of the thermoplastic resin applicable to the thermoplastic resin material 26 include polycarbonate resin, polyamide (PA) resin, polyurethane (PU) resin, polyvinyl chloride resin, and polypropylene (PP) resin. In the present embodiment, the thermoplastic resin material 26 includes carbon fibers as reinforcing fibers. That is, the thermoplastic resin material 26 of the present embodiment is made of carbon fiber reinforced resin (CFRP). However, as the reinforcing fiber, various known fibers such as glass fiber and metal fiber may be used instead of carbon fiber.

  Further, on the upper die 12 side which is one side of the pair of upper die 12 and lower die 14 shown in FIG. 1, a vertical wall shape is formed on the rear side of the rail 20 shown in FIG. The stopper 30 is provided. The stopper 30 is fixed to the lower wall portion 20C of the rail 20 as an example. The stopper 30 may be provided on each of the pair of rails 20 or may be provided so as to connect the pair of rails 20 in the apparatus width direction. The stopper 30 causes the displacement of the jig 22 that slides along the pair of rails 20 so that the inner side of the frame of the jig 22 (see FIG. 3) reaches between the molding surface 12A of the upper mold 12 and the molding surface 14A of the lower mold 14. It is supposed to be restricted in the state.

  Further, in the molding apparatus 10 of the present embodiment, the upper mold 12 and the lower mold 14 are opened, and the inner side of the frame of the jig 22 is between the molding surface 12A of the upper mold 12 and the molding surface 14A of the lower mold 14. In the arranged state (the state shown in FIG. 2C), the molding surface 12A and the lower die 14 of the upper mold 12 shown in FIGS. 1A and 2C when viewed from the side of the jig 22. 14A is set at a position away from the jig 22 in the vertical direction of the apparatus.

(Resin member molding method and functions / effects)
Next, a method for molding the resin member will be described, and the operation and effect of the above embodiment will be described. In the molding apparatus 10 according to the present embodiment, for example, a resin member for automobiles can be manufactured by the following stamping molding.

  First, the stud bolt 24 provided in the frame-shaped jig 22 is passed through the hole 26A in the four corners on the peripheral end 26S side of the plate-like or sheet-like thermoplastic resin material 26 shown in FIG. A nut 28 is screwed onto 24. Then, as shown in FIG. 2A, in the first step, the frame-shaped jig 22 to which the peripheral end 26S (see FIG. 3) side of the plate-like or sheet-like thermoplastic resin material 26 is attached is heated. The jig 22 and the thermoplastic resin material 26 are heated in the furnace 32 (illustrated in a block form in the drawing).

  After the first step, the jig 22 is taken out from the heating furnace 32. And in a 2nd process, the jig | tool 22 taken out from the heating furnace 32 is slid to the apparatus back side along the rail 20 shown by FIG. 2 (B). Then, the jig 22 is slid until it hits the stopper 30 as shown in FIG. Thereby, as shown in FIG. 2C and FIG. 1A, the thermoplastic resin material 26 is moved vertically between the upper mold 12 and the lower mold 14 and from both the upper mold 12 and the lower mold 14. Place it at a distance.

  Thus, in this embodiment, the thermoplastic resin material 26 is heated in a state of being attached to the jig 22 in advance, and the jig 22 heated together with the thermoplastic resin material 26 is slid along the pair of rails 20, The heated thermoplastic resin material 26 can be disposed (positioned) at a molding position in a short time. When the upper mold 12 and the lower mold 14 are opened, and the thermoplastic resin material 26 is disposed between the molding surface 12A of the upper mold 12 and the molding surface 14A of the lower mold 14, the thermoplastic resin is used. Since the material 26 is disposed at a position away from the upper die 12 and the lower die 14 in the vertical direction of the apparatus, it is possible to suppress the thermoplastic resin material 26 before press molding from being cooled by the upper die 12 and the lower die 14. . In addition, since the jig 22 is heated together with the thermoplastic resin material 26 in the first step, it is possible to prevent the thermoplastic resin material 26 from being cooled by the jig 22.

  In the third step after the second step, as shown in FIG. 1B, the thermoplastic resin material 26 is clamped with the upper die 12 and the lower die 14 and press-molded. Then, after the thermoplastic resin material 26 is cooled to a predetermined temperature, the upper mold 12 and the lower mold 14 are opened, and an unnecessary outer peripheral end side of the molded product is cut off to obtain a resin member.

  As described above, according to the present embodiment, press molding can be performed in a state in which the temperature drop of the heated thermoplastic resin material 26 is suppressed.

[Modification of First Embodiment]
Next, a modification of the first embodiment will be described. FIG. 4 shows an enlarged perspective view of the mounting structure of the thermoplastic resin material 26 on the peripheral end portion 26S side. As shown in FIG. 4, the peripheral end portion 26 </ b> S of the thermoplastic resin material 26 is sandwiched between the pair of plate members 34 and 36 in the thickness direction. As an example, the plate members 34 and 36 have a rectangular shape in plan view, and a hole (not shown) is formed through the center of the plate members 34 and 36. The hole portions of the pair of plate members 34 and 36 are disposed at positions corresponding to the hole portions 26 </ b> A (see FIG. 3) of the thermoplastic resin material 26. The overlapping portion 38 of the peripheral end portion 26S of the thermoplastic resin material 26 and the pair of plate members 34, 36 is the hole portion of the pair of plate members 34, 36 and the hole portion 26A of the thermoplastic resin material 26 (see FIG. 3), the nut 28 is screwed (that is, bolted) to the stud bolt 24 penetrating from the lower side, so that it is directly attached to the jig 22.

  In this modification, the overlapping portion 38 is bolted in a state in which the peripheral end portion 26S of the thermoplastic resin material 26 is sandwiched between the pair of plate members 34 and 36 in the thickness direction. The circumferential end portion 26S of the thermoplastic resin material 26 can be held in a wider range than when the circumferential end portion of the material is directly bolted. And when a load acts on the peripheral end portion 26S side of the thermoplastic resin material 26 in the third step or the like, the thermoplastic resin is compared with the case where the peripheral end portion of the thermoplastic resin material is directly bolted. It is possible to suppress a local load from acting on the peripheral end portion 26 </ b> S of the material 26. Therefore, the breakage of the peripheral end portion 26S of the thermoplastic resin material 26 is effectively suppressed.

  As a further modification of the above modification, for example, a configuration in which the lower plate member 36 is not provided in the configuration shown in FIG. 4 may be employed.

[Second Embodiment]
Next, a molding apparatus and a resin member molding method according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a cross-sectional view of the molding apparatus according to the present embodiment in a simplified view showing a part of the molding apparatus. FIG. 5A shows the mold open state (state at the end of the second process), and FIG. 5B shows the mold clamped state (third process). FIG. 6 is a perspective view of the jig 22 in a state where the peripheral end portion 40S side of the thermoplastic resin material 40 is attached.

  As shown in FIG. 5A, the upper mold 12 and the lower mold 14 of the present embodiment are deep drawing molds. The upper mold 12 of this embodiment has a larger protruding amount of the convex portion 12C than the upper mold 12 (see FIG. 1A) in the first embodiment, but the other points are the upper mold in the first embodiment. 12 (see FIG. 1 (A)), the same reference numerals are used and description thereof is omitted. Further, the lower mold 14 of the present embodiment has a larger amount of recesses 14C than the lower mold 14 (see FIG. 1A) in the first embodiment, but the other points are the lower mold 14 in the first embodiment. Since it is substantially the same as the mold 14 (see FIG. 1A), the same reference numerals are given and description thereof is omitted. Further, the molding apparatus 10 of the present embodiment is different from the first embodiment in that the shapes of the upper mold 12 and the lower mold 14 are different from those of the molding apparatus 10 of the first embodiment (see FIG. 1 and the like). Since it is the same, the same code | symbol as the shaping | molding apparatus 10 of 1st Embodiment is attached | subjected.

  In addition, the sheet-like thermoplastic resin material 40 according to the present embodiment has a larger size in plan view than the jig 22 before being attached to the jig 22. In addition, as an example, the thermoplastic resin material 40 is thinner than the thermoplastic resin material 26 of the first embodiment (see FIG. 1A and the like) and has flexibility. In addition, the resin applicable to the thermoplastic resin material 40 is the same as that of the thermoplastic resin material 26 (refer FIG. 1 (A) etc.) of 1st Embodiment. Further, the thermoplastic resin material 40 includes reinforcing fibers as in the thermoplastic resin material 26 of the first embodiment (see FIG. 1A, etc.).

(Resin member molding method and functions / effects)
Next, a method for molding a resin member will be described, and functions and effects of the present embodiment will be described.

  First, the stud bolt 24 provided in the frame-shaped jig 22 is passed through the holes (not shown) at the four corners on the peripheral end 40S side of the sheet-like thermoplastic resin material 40 shown in FIG. A nut 28 is screwed onto 24. At this time, the thermoplastic resin material 40 is attached to the jig 22 in a state where the central portion is bent downward (slack state). As in the first embodiment, in the first step, the frame-shaped jig 22 to which the peripheral end portion 40S side of the sheet-like thermoplastic resin material 40 is attached is used as a heating furnace 32 (see FIG. 2A). Heat with.

  In the second step after the first step, the jig 22 taken out from the heating furnace 32 (see FIG. 2A) is moved along the rail 20 shown in FIG. 5A with a stopper 30 (FIG. 2C). Slide until it hits Thereby, as shown in FIG. 5A, the thermoplastic resin material 40 is disposed between the upper mold 12 and the lower mold 14 and at a position away from both the upper mold 12 and the lower mold 14 in the vertical direction. To do. Therefore, as in the first embodiment, the thermoplastic resin material 40 can be placed in the molding position in a short time, and the thermoplastic resin material 40 before press molding is formed by the upper mold 12 and the lower mold 14. It can suppress being cooled. In addition, since the jig 22 is heated together with the thermoplastic resin material 40 in the first step, it is possible to prevent the thermoplastic resin material 40 from being cooled by the jig 22.

  In the third step after the second step, as shown in FIG. 5B, the thermoplastic resin material 40 is clamped with the upper mold 12 and the lower mold 14 and press-molded. In the present embodiment, since the central portion of the thermoplastic resin material 40 is bent downward in the previous stage of the third step, the thermoplastic resin material 40 is easily aligned with the concave portion 14C of the lower mold 14 in the third step. Therefore, the formability of deep drawing can be improved. Then, as in the first embodiment, after the thermoplastic resin material 40 is cooled to a predetermined temperature, the upper mold 12 and the lower mold 14 are opened, and an unnecessary outer peripheral end side of the molded product is cut off. To obtain a resin member.

  As described above, according to this embodiment, press molding can be performed in a state in which the temperature drop of the heated thermoplastic resin material 40 is suppressed.

[Modification of Second Embodiment]
As a modification of the present embodiment, for example, before the first step, the peripheral end side of a plate-like thermoplastic resin material that is slightly larger than the jig 22 is connected to the jig 22 via a spring member (not shown). In addition to being attached, in the first step, the center portion of the thermoplastic resin material may be bent downward while heating the thermoplastic resin material in the heating furnace 32 (see FIG. 2A). According to such a method, it becomes possible to apply a thermoplastic resin material that is thicker than the thermoplastic resin material 40 of the above-described embodiment.

  Further, in such a modification, for example, the peripheral end portion of the thermoplastic resin material is sandwiched in the thickness direction by the pair of plate members 34 and 36 shown in FIG. The overlapping portion between the pair of plate members 34 and 36 is fastened by a bolt (not shown) and a nut 28, and the overlapping portion is attached to the jig 22 shown in FIG. 6 via the spring member. Good. In that case, one end side of the spring member is locked and attached to the stud bolt 24, and the other end side of the spring member is locked and attached to a locked portion (not shown) formed in the overlapping portion. Also good. In this case, the state where one end side of the spring member is locked to the stud bolt 24 is that the one end side of the spring member 46 shown in FIG. 7 is locked to the shaft member 44 in the third embodiment described later. Since it is substantially the same as the state, please refer to it.

[Third Embodiment]
Next, a molding apparatus and a resin member molding method according to the third embodiment of the present invention will be described with reference to FIG. FIG. 7 is a perspective view showing a state in which the peripheral end portion 50S side of the sheet-like or plate-like thermoplastic resin material 50 is attached to the jig 42 in the present embodiment. The present embodiment has the same configuration as that of the first embodiment except for the points described below. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 7, a thermoplastic resin material 50 having a smaller size in plan view than that of the jig 42 is applied. In addition, the resin applicable to the thermoplastic resin material 50 is the same as that of the thermoplastic resin material 26 (refer FIG. 1 (A) etc.) of 1st Embodiment. Further, the thermoplastic resin material 50 includes reinforcing fibers as in the thermoplastic resin material 26 of the first embodiment (see FIG. 1A, etc.).

  In the present embodiment, the thermoplastic resin material 50 is disposed away from the inside of the frame of the jig 42, and the circumference of the thermoplastic resin material 50 is between the peripheral end 50 </ b> S side of the thermoplastic resin material 50 and the jig 42. A spring member 46 that pulls the end 50S toward the jig 42 is provided. The spring member 46 is a tension coil spring that applies a tensile force.

  As shown in the partially enlarged view of FIG. 7, one end side of the spring member 46 is locked and attached to a shaft member 44 as an attached portion of the jig 42. Further, a base end portion 48A of a clip (clamping member) 48 that is used for clamping the peripheral end portion 50S of the thermoplastic resin material 50 is attached (fixed) to the other end side of the spring member 46. The shaft member 44 protrudes upward from the four corners of the bottom wall portion 22A of the jig 42, and the clip 48 sandwiches the peripheral end portion 50S of the thermoplastic resin material 50 in the thickness direction between the pair of sandwiching portions 48B. Yes.

(Resin member molding method and functions / effects)
Next, a method for molding a resin member will be described, and functions and effects of the present embodiment will be described.

  First, the peripheral end portion 50S of the thermoplastic resin material 50 shown in FIG. 7 is sandwiched between the clips 48, and the peripheral end portion 50S of the thermoplastic resin material 50 is pulled toward the jig 42 by the spring member 46. The subsequent first step, second step, and third step are the same as in the first embodiment.

  Also according to the present embodiment, the same operations and effects as those of the first embodiment described above can be obtained. In the present embodiment, the peripheral end portion 50S of the thermoplastic resin material 50 is pulled toward the jig 42 by the spring member 46, so that the thermoplastic resin material 50 has a central end portion 50A side to a peripheral end portion 50S side. The tensile force acts on. For this reason, at the time of press molding in the third step, even if the molding surfaces of the upper mold and the lower mold have complicated shapes (not shown), the thermoplastic resin material 50 can flow toward the peripheral end 50S. it can. That is, even if the molding surfaces of the upper mold and the lower mold have complicated shapes, wrinkles due to retention of the thermoplastic resin material 50 during press molding are unlikely to occur, and moldability can be improved. Therefore, in this embodiment, a product having a complicated surface shape can be formed.

[Modification of Third Embodiment]
As a modification of the present embodiment, for example, the peripheral end portion 50S of the thermoplastic resin material 50 is sandwiched in the thickness direction by the pair of plate members 34 and 36 shown in FIG. The overlapping portion of the portion 50S (see FIG. 7) and the pair of plate members 34, 36 is bolted by a bolt (not shown) and the nut 28 and attached to the jig 42 via the spring member 46 shown in FIG. May be. In that case, one end side of the spring member 46 is locked and attached to the shaft member 44, and the other end side of the spring member 46 is locked and attached to the locked portion (not shown) formed in the overlapping portion. Also good.

[Supplementary explanation of the embodiment]
In the first to third embodiments, as shown in FIG. 1 and the like, the rail 20 as a pair of guide members is one of the upper mold 12 and the lower mold 14. The rails as the pair of guide members are one of the pair of the upper mold 12 and the lower mold 14. The lower mold 14 is provided on the both sides of the molding surface 12 </ b> A of the upper mold 12. May be disposed on both sides of the molding surface 14 </ b> A of the lower die 14 (the one) and fixed to the base 18. In this case, the same function as that of the stopper 30 shown in FIG. 2C (that is, the displacement of the jig that slides along the pair of rails) A stopper having a function of limiting in a state reached between the upper die 12 and the lower die 14 is also provided on the lower die 14 (one side) side. And the said stopper may be fixed to the part of the apparatus back | inner side in the lower wall part of the said rail similarly to the said 1st-3rd embodiment.

  Moreover, in the said 1st-3rd embodiment, as FIG.3, FIG6 and FIG.7 shows, the peripheral edge part 26S, 40S, 50S side of the thermoplastic resin materials 26, 40, 50 is the four corners. The parts are attached to the four corners of the jigs 22 and 42. On the peripheral end side of the plate-like or sheet-like thermoplastic resin material, parts other than the four corners are attached to parts other than the four corners of the jig. May be. Further, the shape in plan view of the plate-like or sheet-like thermoplastic resin material is not limited to the example of the above embodiment.

  Moreover, in the said 1st-3rd embodiment, although the stopper 30 shown by FIG.2 (C) is formed in the vertical wall shape, a stopper is a lower wall part (20C) of a rail (20), for example. Other stoppers such as a stat bolt or a shaft member protruding upward from the side may be used.

  In addition, the thermoplastic resin materials 26, 40, and 50 (see FIGS. 1 to 7) applied to the first to third embodiments include reinforcing fibers, but the thermoplastics applied to the present invention. The resin material may not contain reinforcing fibers.

  Further, in the concept of “the peripheral end portion side of the thermoplastic resin material is attached” according to claim 1, the peripheral end portion of the thermoplastic resin material is directly attached as in the first and second embodiments. In addition to the case, the case where the peripheral end portion of the thermoplastic resin material is attached via a member as in the third embodiment is also included.

  In addition, the said embodiment and the above-mentioned modification can be implemented combining suitably.

  Although an example of the present invention has been described above, the present invention is not limited to the above, and it is needless to say that various modifications can be made without departing from the spirit of the present invention. .

DESCRIPTION OF SYMBOLS 10 Molding apparatus 12 Upper mold 12A Molding surface 14 Lower mold 14A Molding surface 20 Rail (guide member)
22 Jigs 24 Stud bolts (attached parts)
DESCRIPTION OF SYMBOLS 26 Thermoplastic resin material 26S Circumferential edge part 30 Stopper 32 Heating furnace 34,36 A pair of plate member 38 Superposition | polymerization part 40 Thermoplastic resin material 40S Circumferential edge part 42 Jig 44 Shaft member (attachment part)
46 Spring member 50 Thermoplastic resin material 50S Circumferential end

Claims (6)

A first step of heating in a heating furnace a frame-shaped jig to which a peripheral end portion side of a plate-like or sheet-like thermoplastic resin material is attached;
After the first step, the jig taken out from the heating furnace is slid along the guide member until it hits the stopper, and the thermoplastic resin material is placed between the upper mold and the lower mold and the upper mold and the lower mold. A second step of disposing at a position away from both in the vertical direction;
After the second step, a third step in which the thermoplastic resin material is clamped and press-molded with the upper die and the lower die, and
A molding method of a resin member having The upper mold is a convex mold and the lower mold is a concave mold;
The method for molding a resin member according to claim 1, wherein the thermoplastic resin material having a central portion bent downward is attached to the jig that is slid along the guide member in the second step. .   The thermoplastic resin material is disposed away from the inner side of the jig frame, and the peripheral end portion of the thermoplastic resin material is disposed between the peripheral end side of the thermoplastic resin material and the jig. The method for molding a resin member according to claim 1, wherein a spring member that is pulled to the side is provided.   The peripheral end portion of the thermoplastic resin material is sandwiched in the thickness direction by a pair of plate members, and the overlapping portion of the peripheral end portion of the thermoplastic resin material and the pair of plate members is bolted and directly or a member The molding method of the resin member of any one of Claims 1-3 attached to the said jig via. Upper and lower molds that can be opened and closed;
A pair of guide members provided on one side of the upper mold and the lower mold and disposed on both sides of the one molding surface;
A frame provided with a mounting portion that can be placed on the pair of guide members and is slidable along the pair of guide members and to which a peripheral end portion side of a plate-like or sheet-like thermoplastic resin material is attached. Shaped jigs,
Displacement of the jig that is provided on the one side of the upper mold and the lower mold and slides along the pair of guide members, and the inside of the frame of the jig is formed between the molding surfaces of the upper mold and the lower mold. A stopper to limit the state reached in between,
Have
In the state where the upper mold and the lower mold are opened and the inside of the frame of the jig is disposed between the molding surfaces of the upper mold and the lower mold, the upper mold is viewed from the side of the jig. And a molding apparatus in which each molding surface of the lower mold is set at a position away from the jig in the vertical direction of the apparatus.   The molding apparatus according to claim 5, wherein one end side of a spring member that applies a tensile force to the thermoplastic resin material is attached to the jig.