JP2013193421A - Molding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding apparatus that can be miniaturized.SOLUTION: A molding apparatus includes: a fixed mold 40 mounted to a first fixed platen 22; a movable platen 24 mounted movably along a plurality of tie bars 25; a movable mold 50 mounted to the movable platen 24 and press-molding a preboard P1 between itself and the fixed mold 40 to mold a trim board 11; a hydraulic cylinder 27 capable of closing and opening the fixed mold 40 and the movable mold 50; and an injection apparatus 30 capable of injecting molten resin into a mounting boss molding space S3 for molding a mounting boss 12. The fixed mold 40 and the movable mold 50 are disposed in a peripheral end side position of the movable platen 24 in the shifted form of a center axis C1 of the fixed mold 40 and a center axis C2 of the movable mold 50 with respect to a center axis C3 of the movable platen 24. A storage space S1 for storing the injection apparatus 30 is thereby formed between the movable platen 24 and the first fixed platen 22 in the closed state of the fixed mold 40 and movable mold 50.

Description

  The present invention relates to a molding apparatus.

  2. Description of the Related Art Conventionally, as a molded product used for a vehicle interior material or the like, a molding apparatus for molding a molded structure composed of two types of members is known (for example, Patent Document 1 below). The following methods are known as a method for producing a molded structure using such a molding apparatus. First, the first member is held by a pair of molds. Next, the second member is molded by injecting molten resin into the cavity formed in the mold. Thereby, the 2nd member is fabricated in the state joined to the 1st member. A method is also known in which a first member is press-molded with a pair of molds and then a molten resin is injected to mold a second member.

JP 2002-36285 A

  In a conventional molding apparatus, an injection apparatus for injecting molten resin is disposed outside a mold clamping apparatus including a pair of molding dies, and there is a concern about an increase in the size of the apparatus.

  The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a molding apparatus that can be miniaturized.

  In order to solve the above problems, a molding apparatus according to the present invention is a molding apparatus for molding a molding structure including a base material and a molded body molded on the base material. A fixed plate, a second fixed plate arranged opposite to the first fixed plate, a plurality of tie bars respectively connecting the first fixed plate and the second fixed plate, and attached to the first fixed plate A fixed plate, a movable plate disposed between the first fixed plate and the second fixed plate, and movably attached along the plurality of tie bars; and attached to the movable plate; A movable mold capable of forming the base material by press-molding the preboard between the second fixed plate and the center of the second fixed plate and the movable plate are connected to each other, and the second fixed plate is attached. By driving the movable plate relative to the plate, the fixed mold and A driving device capable of closing and opening the movable die, and a region adjacent to one of the fixed die and the movable die and surrounded by the plurality of tie bars An injection device capable of injecting molten resin into a cavity for molding the molded body formed inside the one mold, and a central axis of the fixed mold and a central axis of the movable mold The fixed mold and the movable mold are arranged at positions close to the peripheral end of the movable board in such a manner that the fixed mold and the movable mold are shifted with respect to the central axis of the movable board. In the state, an accommodation space for accommodating the injection device is formed between the movable platen and the first fixed platen.

  According to the present invention, the fixed mold and the movable mold are arranged at positions near the peripheral end of the movable board in such a manner that the central axis of the fixed mold and the central axis of the movable mold are shifted with respect to the central axis of the movable board. Thus, in the mold closed state, an accommodation space for accommodating the injection device is formed between the movable platen and the first fixed platen. Thereby, the injection device can be accommodated between the movable platen and the first fixed platen, and the molding device can be miniaturized.

  The said structure WHEREIN: The said molded structure shall be equipped with the 1st molded object and the 2nd molded object which are at least 2 said molded object, The said cavity makes the shape corresponding to the shape of the said 1st molded object. A first molded body cavity, and a second molded body cavity having a shape corresponding to the shape of the second molded body, and the first mold body cavity and the second molded body cavity are formed inside the one mold. A resin flow passage that allows the molten resin injected from the injection device to flow through each of the second molded body cavities is formed, and the resin flow passage includes a main path connected to the injection device, and the main flow passage A first branch path that connects the path and the first molded body cavity; and a second branch path that connects the main path and the second molded body cavity; and Injection compared to the second branch Together arranged on placed al farther, it is possible to its length, and is smaller than the length of the second branch passage.

  In general, the pressure of the molten resin injected into the resin flow passage tends to be lower as the position is farther from the injection device that is the supply source of the molten resin. In particular, in the configuration in which the injection device is accommodated in the accommodation space between the movable platen and the first fixed plate as in the present invention, the size of the injection device tends to be small in order to accommodate the injection device in the accommodation space. Yes, the injection pressure of the injection device itself tends to be small. For this reason, we are anxious about the pressure drop of the molded object cavity in a location far from the injection device. In this regard, in the present invention, the length of the first branch path disposed at a position relatively far from the injection device is smaller than the length of the second branch path. Thereby, the path length of molten resin from the injection device to the first molded body cavity (the total length of a part of the main path and the length of the first branch path) can be further reduced. As a result, the injection pressure is reduced in the first molded body cavity (that is, the molded body cavity disposed at a position relatively far from the injection device) connected to the first branch path disposed at a position far from the injection device. The situation can be suppressed.

  In addition, a protrusion that protrudes toward the other of the fixed mold and the movable mold is provided on the surface facing the other of the fixed mold and the movable mold. In the closed state of the fixed mold and the movable mold, a recess into which the protrusion is fitted can be formed.

  In the present invention, in order to secure the accommodation space for the injection device, the fixed-type central axis and the movable-type central axis are shifted with respect to the central axis of the movable platen (the connection portion of the driving device). That is, when the fixed mold and the movable mold are closed by the driving device, the load from the driving device acts at a position shifted from the central axis of the fixed mold and the central axis of the movable mold. If a load is applied to a position shifted from the center axis of both molds, the movable mold or the fixed mold is slightly bent, and there is a concern that the position of the movable mold with respect to the fixed mold is shifted. Therefore, in the present invention, the fixed mold and the movable mold are configured to include a protrusion and a recess into which the protrusion can be fitted. Thereby, when the mold is closed, the protrusion and the recess are fitted, so that the fixed mold and the movable mold can be reliably aligned.

  ADVANTAGE OF THE INVENTION According to this invention, the shaping | molding apparatus which can be reduced in size can be provided.

The front view which shows the shaping | molding apparatus which concerns on one Embodiment of this invention. The perspective view which shows the fixed mold | type of FIG. FIG. 1 is a plan view schematically showing the fixed mold of FIG. Sectional drawing which shows the fixed type | mold and movable type | mold of FIG. Sectional drawing which shows the protrusion of a fixed mold | type in a mold closed state, and a recessed part of a movable mold | type (corresponding to the figure cut | disconnected by the AA line of FIG. 3)

  An embodiment of the present invention will be described with reference to FIGS. In this embodiment, the shaping | molding apparatus 20 for shape | molding the door trim 10 (molding structure) attached to the vehicle door is illustrated. As shown in FIG. 4, the door trim 10 includes a trim board 11 (base material) and a mounting boss 12 (molded body, functional component) molded on the trim board 11.

  As shown in FIG. 4, the trim board 11 has a plate shape, and is composed of, for example, a mixture (a material including a thermoplastic resin) formed by fixing fibers with a thermoplastic resin (for example, polypropylene). Yes. The trim board 11 is formed by pressing the mat-shaped preboard P1 with the fixed mold 40 and the movable mold 50 (see FIGS. 1 and 4). In addition, as a fiber used for the trim board 11, for example, a woody fiber obtained by weaving wood or the like, a bast plant fiber such as kenaf, or the like is used, but the type of the fiber is not limited thereto.

  In the trim board 11, polypropylene plays a role as a binder for connecting fibers. Moreover, you may form the trim board 11 only with a polypropylene or another thermoplastic resin. Alternatively, the trim board 11 may be formed of a mixture of a thermoplastic resin other than polypropylene such as polyethylene terephthalate and polylactic acid and fibers.

  The mounting boss 12 is made of, for example, polypropylene, which is a thermoplastic resin, and is joined to the trim board 11. As shown in FIG. 4, the mounting boss 12 is formed so as to protrude from the back surface (surface outside the passenger compartment) of the trim board 11. The attachment boss 12 has, for example, a cylindrical shape and functions as an attachment portion for components (for example, a door pocket, an ornament, an armrest, etc.) attached to the door trim 10.

  The mounting boss 12 is molded by injecting molten resin onto the trim board 11 after the trim board 11 is press-molded by the fixed mold 40 and the movable mold 50. That is, the attachment boss 12 is joined to the trim board 11 simultaneously with the molding. In the present embodiment, a plurality of (for example, six) mounting bosses 12 are formed on the trim board 11. Each mounting boss 12 is molded by molten resin injected from an injection device 30 (see FIG. 4) included in the molding device 20 (details will be described later).

  The molding apparatus 20 of this embodiment is a so-called vertical molding apparatus as shown in FIG. The molding apparatus 20 includes a first fixed plate 22 (first fixed die plate) disposed on the lower side, and a second fixed plate 23 (opposed to the first fixed plate 22 above the first fixed plate 22). A second fixed die plate). As shown in FIGS. 1 and 2, the first fixed plate 22 and the second fixed plate 23 have, for example, a plan view shape, and the four corners of each are connected by four tie bars 25. Yes.

  A fixed mold 40 is attached to the upper surface of the first fixed board 22 via a fixed mold mounting board 22a. A movable platen 24 is disposed between the first fixed platen 22 and the second fixed platen 23. The movable platen 24 has a square shape in plan view, and through holes 24A through which the tie bars 25 pass are formed at the four corners. The movable platen 24 is movably attached along the tie bar 25 by allowing the tie bar 25 to penetrate the through hole 24A.

  The movable platen 24 is attached to the second fixed platen 23 via a hydraulic cylinder 27 (drive device). A movable die 50 is attached to a surface (lower surface) of the movable platen 24 facing the fixed die 40 via a movable attachment platen 24a. Accordingly, the movable die 24 is driven (raised or lowered) with respect to the second fixed platen 23 by the hydraulic cylinder 27 so that the fixed die 40 and the movable die 50 can be closed and opened. It has become. FIG. 1 shows a state where the fixed mold 40 and the movable mold 50 are opened, and FIGS. 4 and 5 show a state where the fixed mold 40 and the movable mold 50 are closed. It is shown. End blocks 22b and 24b are provided at the four corners of the fixed mold mounting plate 22a and the movable mold mounting plate 24a to control the pressure applied to the mold surface when the mold is closed.

  The hydraulic cylinder 27 has one end attached to the center of the lower surface 23 </ b> A of the second fixed platen 23 and the other end attached to the center of the upper surface 24 </ b> B of the movable platen 24. That is, the hydraulic cylinder 27 is attached so as to connect the centers of the opposing surfaces 23A and 24B of the second fixed platen 23 and the movable platen 24.

  The movable mold 50 is configured such that the trim board 11 can be molded by press-molding the pre-board P <b> 1 with the fixed mold 40. Specifically, a part of the facing surface 40B of the fixed mold 40 facing the movable mold 50 is a molding surface corresponding to the back surface shape of the trim board 11, as shown in FIG. On the other hand, a part of the surface 50 </ b> B facing the fixed die 40 in the movable die 50 is a molding surface corresponding to the surface shape of the trim board 11. Thus, in a state where the fixed mold 40 and the movable mold 50 are closed, a trim board forming space S2 (base material forming space) for forming the trim board 11 is formed between the two molds 40 and 50.

  Thus, when the preboard P1 is pressed by both molds 40 and 50, the preboard P1 is compressed into a shape corresponding to the shape of the trim board forming space S2, and the trim board 11 is formed. Further, by pressing the preboard P1 with both molds 40 and 50, the peripheral end portion (outer periphery unnecessary portion) of the preboard P1 is cut off by shearing of both molds 40 and 50.

  The injection device 30 is provided in an area adjacent to the fixed mold 40 and surrounded by a plurality of tie bars 25 in the first fixed board 22 (fixed mold mounting board 22a). The injection device 30 heats inside the pellets of the synthetic resin supplied through the hopper 31 to form a molten resin, and the molten resin is injected from the tip of the nozzle 32 by an injection screw (not shown). It is set as the structure which can do.

  In the present embodiment, as shown in FIG. 1, the fixed mold 40 and the movable mold 50 are arranged at positions near the peripheral end portion (right side in FIG. 1) of the movable platen 24. C1 and the central axis C2 of the movable mold 50 are shifted in the horizontal direction with respect to the central axis C3 of the movable platen 24. The central axes C1, C2, and C3 in the present embodiment are axes that pass through the center of each member in plan view and that extend along the vertical direction (the mold closing direction and mold opening direction of the fixed mold 40 and the movable mold 50). Say.

  By disposing the fixed mold 40 and the movable mold 50 closer to the peripheral edge of the movable platen 24, the fixed plate 40 and the movable die 50 are closed between the movable platen 24 and the first fixed platen 22 in the closed state. The housing space S1 in which the injection device 30 is housed is formed (see FIG. 4). The height of the injection device 30 is smaller than the sum of the height (thickness) of the fixed mold 40 and the height of the movable mold 50.

  As shown in FIG. 4, an attachment boss forming space S <b> 3 (cavity) for forming the attachment boss 12 is formed inside the fixed mold 40. Each mounting boss forming space S3 has a shape corresponding to the shape of the mounting boss 12, and is configured to communicate with the trim board forming space S2.

  Inside the fixed mold 40, resin flow passages 41 are formed that allow the molten resin injected from the injection device 30 to flow into the mounting boss forming spaces S3. The resin flow path 41 is branched from the main path 42 directly connected to the injection device 30 (nozzle 32), and a plurality of branches that respectively connect the mounting boss molding spaces S3 and the main path 42. It has a path 43. Thus, the molten resin can be injected from the injection device 30 into each mounting boss molding space S3 through the main path 42 and each branch path 43.

  In the present embodiment, in the plurality of branch paths 43, the length of the branch path 43 disposed at a position farther from the injection device 30 is smaller. This will be described in detail by taking two mounting bosses 12A and 12B as an example among the plurality of mounting bosses 12 formed on the trim board 11. As shown in FIG. 4, the mounting boss 12 </ b> A is arranged at a position relatively far from the injection device 30 on the trim board 11 as compared with the mounting boss 12 </ b> B at the time of molding. Further, the mounting boss 12B is arranged on the trim board 11 at a position relatively closer to the injection device 30 than the mounting boss 12A.

  Further, a branch path 43 that connects the mounting boss molding space S3 (first molded body cavity, denoted by reference numeral S31) for molding the mounting boss 12A (first molded body) and the main path 42 is a first branch path 43A. And a branch path 43 that connects the mounting boss molding space S3 (second molded body cavity, denoted by S32) for molding the mounting boss 12B (second molded body) and the main path 42 is a second branch path 43B. In this case, the first branch path 43A is disposed at a position farther from the injection device 30 than the second branch path 43B, and the length thereof is smaller than the length of the second branch path 43B. Is done.

  As shown in FIG. 3, a plurality of protrusions 45 projecting toward the movable mold 50 are provided on the surface 40 </ b> B of the fixed mold 40 facing the movable mold 50. Correspondingly, as shown in FIGS. 4 and 5, a concave portion 55 into which the protrusion 45 can be fitted is formed on the surface 50 </ b> B of the movable die 50 facing the fixed die 40.

  When the molds 40 and 50 are closed, the protrusions 45 are fitted into the recesses 55 so that the molds 40 and 50 are positioned. For example, as shown in FIG. 3, the protrusions 45 have a substantially rectangular parallelepiped shape, and two are provided at both ends in the long side direction of the fixed mold 40.

  Of the two protrusions 45 provided at each end in the long side direction of the fixed mold 40, one of the protrusions 45A is arranged such that the long side direction is along the long side direction of the fixed mold 40, The fixed mold 40 is arranged at the center in the short side direction. Further, the other protrusion 45 </ b> B is arranged such that its long side direction is along the short side direction of the fixed mold 40.

  Thereby, when the protrusion 45A and the protrusion 45B are fitted in the respective recesses 55, the fixed mold 40 and the movable mold 50 can be more reliably positioned in the long side direction and the short side direction. The two protrusions 45B in the fixed mold 40 have one protrusion 45B arranged on one side in the short side direction of the fixed mold 40 and the other protrusion 45B in the other side in the short side direction of the fixed mold 40. Arranged on the side.

  As shown in FIG. 5, the protrusion 45 has a tapered surface 46 that is inclined to gradually narrow the width dimension of the protrusion 45 toward the protruding end. On the other hand, the recessed part 55 has the taper surface 56 which makes the inclination which makes the width dimension of the recessed part 55 wide little by little as it goes to the opening end. Thereby, the projection 45 is easily fitted into the recess 55.

  Further, insertion holes 40A through which guide pins (not shown) provided on the movable mold 50 can be inserted are formed at four corners of the surface 40B of the fixed mold 40 facing the movable mold 50. By inserting the guide pin through the insertion hole 40 </ b> A, the fixed mold 40 and the movable mold 50 are aligned together with the fitting of the concave portion 55 and the protrusion 45 described above.

  Next, the effect of this embodiment will be described. A molding apparatus 20 according to the present embodiment is a molding apparatus 20 for molding a door trim 10 including a trim board 11 and a mounting boss 12 molded on the trim board 11. , A second fixed plate 23 disposed opposite to the first fixed plate 22, a plurality of tie bars 25 respectively connecting the first fixed plate 22 and the second fixed plate 23, and a fixed attached to the first fixed plate 22. A movable plate 24, which is disposed between the mold 40, the first fixed platen 22 and the second fixed platen 23, is movably attached along the plurality of tie bars 25, and is attached to the movable platen 24. The movable board 50 that can form the trim board 11 by press-molding the preboard P1 and the centers of the opposing surfaces of the second fixed platen 23 and the movable platen 24 are connected to each other. 2 fixed platen 2 By driving the movable plate 24, the fixed die 40 and the movable die 50 can be closed and opened, and the hydraulic cylinder 27 is adjacent to the fixed die 40 and surrounded by a plurality of tie bars 25. An injection device 30 capable of injecting molten resin into the mounting boss molding space S3 for molding the mounting boss 12 formed in the fixed mold 40. The center axis C1 and the center axis C2 of the movable mold 50 are shifted with respect to the center axis C3 of the movable board 24, and the fixed mold 40 and the movable mold 50 are arranged at positions near the peripheral edge of the movable board 24. In the closed state of the fixed mold 40 and the movable mold 50, the storage space S <b> 1 in which the injection device 30 is stored is formed between the movable plate 24 and the first fixed plate 22.

  According to the present embodiment, the fixed die 40 and the movable die 50 are moved to the movable plate 24 by shifting the central axis C1 of the fixed die 40 and the central axis C2 of the movable die 50 with respect to the central axis C3 of the movable plate 24. By arranging it at a position near the peripheral end, an accommodation space S1 in which the injection device 30 is accommodated is formed between the movable platen 24 and the first fixed platen 22 in the mold closed state. Thereby, the injection device 30 can be accommodated between the movable platen 24 and the first fixed platen 22 (that is, inside the mold clamping device for clamping the fixed mold 40 and the movable mold 50), and the molding apparatus 20 can be reduced in size.

  The door trim 10 has at least a mounting boss 12A and a mounting boss 12B, and the mounting boss forming space S3 has a mounting boss forming space S31 having a shape corresponding to the shape of the mounting boss 12A, and the shape of the mounting boss 12B. And a mounting boss molding space S32 having a shape corresponding to the above, and inside the fixed mold 40, the molten resin injected from the injection device 30 to each of the mounting boss molding space S31 and the mounting boss molding space S32. The resin flow passage 41 is formed so that the main flow passage 42 connected to the injection device 30 and the first branch passage connecting the main passage 42 and the mounting boss forming space S31. 43A, and a second branch path 43B that connects the main path 42 and the mounting boss molding space S32. The first branch path 43A is injectable as compared with the second branch path 43B. Together arranged on a farther position, the length is to be smaller than the length of the second branch passage 43B.

  In general, the pressure of the molten resin injected into the resin flow passage 41 tends to be lower as the position is farther from the injection device 30 that is a supply source of the molten resin. In particular, in the configuration in which the injection device 30 is accommodated in the accommodation space S1 between the movable platen 24 and the first fixed platen 22 as in the present embodiment, the injection device 30 is used to accommodate the injection device 30 in the accommodation space S1. Tends to be small, and the injection pressure of the injection device 30 itself tends to be small. For this reason, there is a concern about the pressure drop in the mounting boss molding space S3 (for example, the mounting boss molding space S31) at a location far from the injection device 30.

  In this respect, in the present embodiment, the length of the first branch path 43A disposed at a position relatively far from the injection device 30 is made smaller than the length of the second branch path 43B. The Thereby, the path length of molten resin from the injection device 30 to the mounting boss molding space S31 (the total length of a part of the main path 42 and the first branch path 43A) can be further reduced. As a result, in the mounting boss molding space S31 connected to the first branch path 43A disposed at a position far from the injection device 30 (that is, the mounting boss molding space S3 disposed at a location relatively far from the injection device 30). The situation where the pressure of molten resin falls can be suppressed.

  Further, a protrusion 45 protruding toward the movable mold 50 is provided on the surface 40B of the fixed mold 40 facing the movable mold 50, and the fixed mold 40 is disposed on the surface 50B of the movable mold 50 facing the fixed mold 40. In the mold closed state of 40 and the movable mold 50, a recess 55 into which the protrusion 45 is fitted is formed.

  In this embodiment, in order to secure the accommodation space S1 of the injection device 30, the central axis C1 of the fixed mold 40 and the central axis C2 of the movable mold 50 are set to the central axis C3 of the movable plate 24 (the hydraulic cylinder 27 of the movable plate 24 It is configured to shift with respect to the connection location. That is, when the fixed mold 40 and the movable mold 50 are closed by the hydraulic cylinder 27, the load from the hydraulic cylinder 27 acts on the position shifted from the central axis C1 of the fixed mold 40 and the central axis C2 of the movable mold 50. .

  If a load is applied to a position shifted from the central axes C1 and C2 of both molds 40 and 50, the movable mold 50 or the fixed mold 40 is slightly bent, and the position of the movable mold 50 with respect to the fixed mold 40 is shifted. Concerned. Thereby, it is considered that the dimensional accuracy of the press molding is lowered. Therefore, in the present embodiment, the fixed mold 40 and the movable mold 50 are configured to include the protrusion 45 and the recess 55 into which the protrusion 45 can be fitted. As a result, when the mold is closed, the protrusion 45 and the recess 55 are fitted to each other, so that the fixed mold 40 and the movable mold 50 can be reliably aligned, and the press molding can have higher dimensional accuracy. it can.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the above embodiment, the hydraulic cylinder 27 is exemplified as the driving device for driving the movable platen 24, and hence the movable die 50. However, the present invention is not limited to this. As a drive device, a pneumatic cylinder, an electric motor, etc. can be illustrated, for example. Further, for example, the movable mold 50 may be driven using a toggle link mechanism.

  (2) Although the configuration in which the injection device 30 is adjacent to the fixed mold 40 is limited in the above embodiment, the present invention is not limited to this. For example, the injection device 30 may be configured to be adjacent to the movable mold 50.

  (3) In the above embodiment, the configuration in which the protrusion 45 is provided on the fixed mold 40 and the recess 55 is provided on the movable mold 50 is illustrated, but the present invention is not limited to this. It is good also as a structure which provides the recessed part 55 in the fixed mold | type 40, and provides the protrusion 45 in the movable mold | type 50. FIG. However, if the concave portion 55 is provided on the facing surface 40 </ b> B facing upward, foreign matter (dust or the like) may accumulate in the concave portion 55. For this reason, it is preferable to form the recessed part 55 in the opposing surface 50B which faces below like the said embodiment.

  (4) In the above embodiment, a so-called vertical molding apparatus has been illustrated, but the present invention is not limited to this. For example, the present invention may be applied to a horizontal molding apparatus.

  (5) The protrusion 45 may be formed integrally with the fixed mold 40.

  (6) In the said embodiment, although the door trim 10 was illustrated as a shaping | molding structure and the trim board 11 was used as a base material, it is not limited to this. The molded structure includes a base material containing a thermoplastic resin such as an ornament base material constituting the door trim 10, a seat backboard, and a shielding material for concealing a functional product of the seat, and a molten resin is injected onto the base material. What is necessary is just to provide the molded object shape | molded by shape | molding. The door trim 10 may be provided with parts other than the mounting boss 12.

  (7) In the said embodiment, although the attachment boss | hub 12 was illustrated as a molded object, it is not limited to this. For example, a bracket that can be attached to a door inner panel can be exemplified as the molded body.

  (8) The number of molded bodies such as the mounting bosses 12 is not limited to the number exemplified in the above embodiment and can be changed as appropriate. The fixed mold 40 is provided with the same number of branch paths as the molded body.

  (9) The shapes of the plurality of molded bodies molded on the substrate may be different from each other. For example, each mounting boss 12 may have a different shape.

DESCRIPTION OF SYMBOLS 10 ... Door trim (molded structure), 11 ... Trim board (base material), 12 ... Mounting boss (molded body), 12A ... Mounting boss (first molded body), 12B ... Mounting boss (second molded body), 20 DESCRIPTION OF SYMBOLS ... Molding device, 22 ... 1st fixed plate, 23 ... 2nd fixed plate, 24 ... Movable plate, 25 ... Tie bar, 27 ... Hydraulic cylinder (drive device), 30 ... Injection device, 40 ... Fixed type (one type, Either one of a fixed mold and a movable mold), 40B ... opposing surface (opposite surface on the other side), 41 ... resin flow path, 42 ... main path, 43A ... first branch path, 43B ... second branch 50,... Projection, 50 ... Movable type (the other of the fixed type and the movable type), 50B ... Opposite surface (opposite surface with one of the other), 55 ... Recess, C1 ... Central axis of the fixed die, C2 ... movable center axis, C3 ... center axis of movable board, P1 ... preboard, S1 Housing space, S3 ... mounting boss molding space (cavity), S31 ... attachment boss molding space (first molded body cavity), S32 ... attachment boss molding space (second molded body cavity)

Claims (3)

A molding apparatus for molding a molded structure including a base material and a molded body molded on the base material,
A first fixed plate;
A second fixed plate disposed opposite to the first fixed plate;
A plurality of tie bars respectively connecting the first fixed plate and the second fixed plate;
A fixed mold attached to the first fixed plate;
A movable platen disposed between the first fixed platen and the second fixed platen and movably attached along the plurality of tie bars;
A movable mold that is attached to the movable platen and can mold the substrate by press-molding a preboard with the fixed mold,
The second fixed plate and the movable plate are attached so as to connect the centers of the opposing surfaces of each other, and the movable plate is driven with respect to the second fixed plate, whereby the fixed die and the movable die A drive device capable of closing and opening the mold;
For forming the molded body that is provided in an area adjacent to one of the fixed mold and the movable mold and surrounded by the plurality of tie bars, and is formed inside the one mold. An injection device capable of injecting molten resin into the cavity of
The fixed mold and the movable mold are arranged at positions close to the peripheral end of the movable board in such a manner that the central axis of the fixed mold and the central axis of the movable mold are shifted with respect to the central axis of the movable board. Thus, a molding apparatus having a configuration in which an accommodation space for accommodating the injection device is formed between the movable platen and the first fixed platen in a closed state of the fixed die and the movable die. The molded structure includes at least two of the first molded body and the second molded body, which are the molded bodies,
The cavity is
A first molded body cavity having a shape corresponding to the shape of the first molded body;
A second molded body cavity having a shape corresponding to the shape of the second molded body,
Inside the one mold is formed a resin flow passage that allows the molten resin injected from the injection device to flow through each of the first molded body cavity and the second molded body cavity,
The resin flow path is
A main path connected to the injection device;
A first branch path connecting the main path and the first molded body cavity;
A second branch path connecting the main path and the second molded body cavity;
The first branch path is arranged at a position farther from the injection device than the second branch path, and the length thereof is smaller than the length of the second branch path. The molding apparatus as described. A protrusion that protrudes toward the other of the fixed mold and the movable mold is provided on the surface facing the other of the fixed mold and the movable mold.
3. The recess according to claim 1 or 2, wherein a concave portion into which the protrusion is fitted is formed on a surface of the other facing the one in the closed state of the fixed mold and the movable mold. Molding equipment.

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