JP2019171678A - Manufacturing method for integrated molding - Google Patents

Abstract

To provide a manufacturing method for an integrated molding which can suppress occurrence of such a defect that a molten resin enters between an insert member and a mold.SOLUTION: When a moving component 11B slidingly moves toward an insert member 30, the moving component 11B pushes a pair of moving components 11A away. Thereby, each of the moving components 11A moves from a moving component 11B side to each end 31 side of the insert member 30. Thereby, an end face 11A22 of a tapered portion 11A2 is pressed to a core contact surface, and as a result, the moving components 11A engage with the insert member 30.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a method for manufacturing an integrally molded body.

  Various methods for integrating the insert member and the resin by injecting a molten resin into a mold in which a part called an insert member is disposed have been proposed as a method for producing an integrally molded body (for example, , See Patent Document 1). The metal mold | die of patent document 1 is provided with the 1st metal mold | die which has a concave cavity in which an insert member is mounted, and the 2nd metal mold | die which has a convex core. And in the state which the metal mold | die closed, the resin filling space filled with resin is formed between the core and the cavity.

JP2013-202825A

  Since the molten resin is injected vigorously into the resin-filled space, the resin may enter between the insert member and the first mold. The resin that has entered between the insert member and the first mold becomes a burr of the integrally molded body by curing.

  This invention is made | formed in view of such a situation, and it aims at providing the manufacturing method of the integrally molded body which can suppress that a defect generate | occur | produces in an integrally molded body.

  According to the present invention, there is provided a method of manufacturing an integrally molded body using a first mold and a second mold, which includes a placing process, a mold closing process, a fixing process, and an injection process, One mold is formed with an opening through which a moving member engaged with the insert member can move. The insert member has a first end and a second end, and the moving member has a first movement. In the placing step, the insert member is placed on the first die, and in the die closing step, the first die and the second die are closed. To form a resin-filled space between the second mold and the insert member, and in the fixing step, move the first moving component from the second end side toward the first end side in the first direction. To move the first moving part into engagement with the first end and to move the second moving part. By sliding the component in the second direction from the first end side toward the second end side and engaging the second moving component with the second end portion, the insert member is moved to the first end portion. A method is provided in which the resin is injected into the resin-filled space in a state in which the insert member is fixed to the first mold in the injection step.

  According to the method of manufacturing an integrally molded body according to the present invention, a defective molded body is obtained by injecting resin into the resin filling space in a state where the insert member is fixed by the moving member provided in the first mold. It is possible to suppress the occurrence of.

Hereinafter, various embodiments of the present invention will be exemplified. The following embodiments can be combined with each other.
Preferably, the first direction and the second direction are opposite directions.
Preferably, the moving member includes a third moving part, and the third moving part is provided between the first moving part and the second moving part. In the fixing step, the third moving part is provided. By moving the component to the insert member side, the first moving component is slid in the first direction and the second moving component is slid in the second direction.
Preferably, the insert member has a first protrusion and a second protrusion, the first protrusion protrudes to the side where the first moving component is provided, and the second protrusion is It protrudes to the side where the second moving part is provided, and in the fixing step, the first moving part is engaged with the first protruding part and the second moving part is engaged with the second protruding part.
Preferably, the first moving part has a first tapered part that engages with the first protruding part, and the second moving part has a second tapered part that engages with the second protruding part. In the fixing step, the first tapered portion is pressed against the first protruding portion, and the second tapered portion is pressed against the second protruding portion.
Preferably, the angle of the tip of the first tapered portion and the angle of the tip of the second tapered portion are 45 degrees or more.
Preferably, the insert member has a reinforcing portion, and the first protruding portion and the second protruding portion are provided with the reinforcing portion, respectively, and the first protruding portion and the reinforcing portion intersect each other. The second projecting portion and the reinforcing portion intersect each other.
Preferably, the insert member has a plate-shaped portion facing the resin-filled space, the first mold has a core on which the plate-shaped portion is placed, and the second mold has A cavity for accommodating the plate-like portion;
Preferably, the insert member has a portion that comes into contact with the cavity of the second mold when the mold closing step is completed, and the plate-shaped portion is formed on the second mold from the first mold side. It is curved to protrude toward the mold side.

FIG. 1 is a perspective view of the integrally molded body 100. It is sectional drawing which passes along the three points X in FIG. 3 is a perspective view showing a state where an insert member 30 is placed on a mold 50. FIG. 4A is a perspective view of the first mold 51, and FIG. 4B is an enlarged view of a region R shown in FIG. 4A. 3 is a perspective view of a moving member 11. FIG. It is the perspective view which looked at the insert member 30 from the 2nd surface 32B side. It is an enlarged view of the area | region A shown in FIG. It is the perspective view which looked at the insert member 30 from the 1st surface 32A side. It is an enlarged view of the area | region B shown in FIG. It is a flowchart of the manufacturing method which concerns on embodiment. It is sectional drawing which shows the state which the movement process of step S3 was complete | finished. It is an enlarged view of the area | region C shown in FIG. It is sectional drawing which shows the state which the fixing process of step S4 was complete | finished. It is sectional drawing which shows the state which the injection process of step S5 was complete | finished.

  Hereinafter, embodiments of the present invention will be described. Various characteristic items shown in the following embodiments can be combined with each other. In addition, the invention is independently established for each feature.

<Configuration of Embodiment>
FIG. 1 is a perspective view of the integrally molded body 100. FIG. 2 is a cross-sectional view through three points X in FIG. With reference to FIG.1 and FIG.2, the outline | summary of the integrally molded body 100 manufactured with the manufacturing method which concerns on embodiment is demonstrated. The integrally molded body 100 manufactured by the manufacturing method according to the embodiment includes a plate-shaped insert member 30 and a skin body 40 that covers a part of the surface of the insert member 30. The integrally molded body 100 is formed integrally with the insert member 30 and the skin body 40. The integrally molded body 100 is a structure used for a grip portion provided on a door trim of an automobile.

  The insert member 30 can be made of various resins. As the constituent resin of the insert member 30, any resin can be adopted depending on, for example, mechanical characteristics required for the integrally molded body. As a constituent resin of the insert member 30, for example, a polyethylene resin or the like can be employed. Further, a filler such as glass fiber may be added to the constituent resin of the insert member 30. The skin 40 can be made of a resin different from the insert member 30. Specifically, the skin body 40 can be made of an elastic resin such as an elastomer resin.

  FIG. 3 is a perspective view showing a state in which the insert member 30 is placed on the mold 50. 4A is a perspective view of the first mold 51, and FIG. 4B is an enlarged view of a region R shown in FIG. 4A. FIG. 5 is a perspective view of the moving member 11. FIG. 6 is a perspective view of the insert member 30 as viewed from the second surface 32B side. FIG. 7 is an enlarged view of region A shown in FIG. FIG. 8 is a perspective view of the insert member 30 as viewed from the first surface 32A side. FIG. 9 is an enlarged view of region B shown in FIG. A configuration used in the manufacturing method according to the embodiment will be described with reference to FIGS. 1 and 2 and FIGS.

  The manufacturing method according to the embodiment includes an insert molding machine (not shown) for injecting molten resin, and a mold 50 for injecting resin from the molding machine. As shown in FIGS. 2 and 3, the mold 50 includes a first mold 51 and a second mold 52 facing the first mold 51. An insert member 30 for insert molding can be placed on the mold 50. The insert member 30 has a pair of end portions 31 fixed to the first mold 51. One end portion 31 of the pair of end portions 31 corresponds to the first end portion, and the other end portion 31 of the pair of end portions 31 corresponds to the second end portion.

  As shown in FIGS. 3-5, the 1st metal mold | die 51 has the core 10 which mounts the insert member 30, and the moving member 11 provided so that a slide movement is possible. The first mold 51 has an opening 12 in which the moving member 11 is accommodated. Further, the first mold 51 is formed with a gate Gt through which the molten resin flows and an end surface Sr1 that abuts against the second mold 52. The core 10 is formed in a convex shape. The shape of the core 10 is appropriately determined according to the shape of the insert member 30.

  The core 10 has a placement surface 10A on which the insert member 30 is placed. The mounting surface 10A is formed with a recess 10A1 into which a later-described first reinforcing portion 34A is inserted and a recess 10A2 into which a later-described second reinforcing portion 34B is inserted. The moving member 11 has a pair of moving parts 11A and a moving part 11B provided between the moving parts 11A. 11 A of moving parts have the top part 11A1 abutted by the insert member 30, and the taper part 11A2 which protrudes from the top part 11A1 side to the edge part 31 side of the insert member 30. As shown in FIG. Here, one of the pair of moving parts 11A corresponds to the first moving part, and the other of the pair of moving parts 11A corresponds to the second moving part. The first moving part is slidable in the first direction, and the second moving part is slidable in the second direction. Here, the first direction is a direction from the second end side to the first end side, and the second direction is a direction from the first end side to the second end side. Further, one tapered portion 11A2 of the pair of moving parts 11A corresponds to the first tapered portion, and the other tapered portion 11A2 of the pair of moving parts 11A corresponds to the second tapered portion. Furthermore, the moving part 11B corresponds to a third moving part.

  The tapered portion 11A2 is tapered in a direction from the top portion 11A1 side toward the end portion 31 side. The angle of the tip 11A21 of the tapered portion 11A2 is 45 degrees or more and 75 degrees or less. Specifically, for example, they are 45, 50, 55, 60, 65, 70, 75, and may be within a range between any two of the numerical values exemplified here. The moving part 11 </ b> B has a top part 11 </ b> B <b> 1 that abuts against the insert member 30 and a pressing part 11 </ b> B <b> 2 that presses the moving part 11 </ b> A against the end part 31 of the insert member 30. The pressing portion 11B2 is tapered.

  The second mold 52 has a concave cavity 20 that houses the insert member 30. The second mold 52 is formed with an end surface Sr2 that abuts against the end surface Sr1 of the first mold 51. Between the core 10 of the 1st metal mold | die 51 and the cavity 20 of the 2nd metal mold | die 52, the resin filling space Sp into which the molten resin is inject | poured is formed. An insert member 30 is provided between the core 10 of the first mold 51 and the cavity 20 of the second mold 52. The second mold 52 does not press the plate-like portion 32 against the first mold 51, but the second mold 52 presses the portion 35 (see FIG. 3) of the insert member 30 against the first mold 51.

  As shown in FIGS. 6 to 9, the insert member 30 includes a plate-like portion 32 having a first surface 32 </ b> A and a second surface 32 </ b> B, a protruding portion 33 connected to the second surface 32 </ b> B, and a protruding portion 33. And a reinforcing portion 34 that intersects. The insert member 30 faces the resin filling space Sp when the mold 50 is closed. As shown in FIGS. 6 and 7, the end portion 31 is formed with a surface 31 </ b> A that contacts the end surface Sr <b> 1.

  In a state where the insert member 30 is placed on the first mold 51, the surface 31A is in contact with the end surface Sr1. The end 31 is fixed to the moving member 11. In the insert member 30, one end portion 31 of the pair of end portions 31 and the other end portion 31 of the pair of end portions 31 extend in parallel. The plate-like portion 32 is curved along the core 10 described later from one end portion 31 of the pair of end portions 31 to the other end portion 31 of the pair of end portions 31.

  The first surface 32A is supplied with molten resin on the surface. The resin supplied to the first surface 32 </ b> A is cured to become the epidermis 40. The second surface 32B is provided on the back side of the first surface 32A. The second surface 32B is in contact with the core 10. Further, the second surface 32 </ b> B is in contact with the moving member 11 in a state where the moving member 11 fixes the insert member 30.

  The insert member 30 has a pair of protrusions 33. Each protrusion 33 is provided at each end 31. Each protrusion 33 engages with each moving part 11A. Here, one protrusion 33 of the pair of protrusions 33 corresponds to the first protrusion, and the other protrusion 33 of the pair of protrusions 33 corresponds to the second protrusion. The first protrusion protrudes to the side where the first moving part is provided, and the second protrusion protrudes to the side where the second moving part is provided.

  The protruding portion 33 has a function of preventing molten resin from entering between the insert member 30 and the first mold 51. The protruding portion 33 also has a function of fixing the end portion 31 of the insert member 30 to the moving member 11. The protrusion 33 is provided at the end 31 of the insert member 30 and protrudes toward the first mold 51. The tapered portion 11A2 is inserted between the second surface 32B and the protruding portion 33. In a state where the tapered portion 11A2 is inserted between the second surface 32B and the protruding portion 33, the tapered portion 11A2 is caught by the protruding portion 33.

  The protruding portion 33 is formed with a core contact surface 33 </ b> A that contacts the moving member 11 in a state where the moving member 11 fixes the insert member 30. The core contact surface 33A is an inclined surface. That is, the virtual surface parallel to the core contact surface 33A and the end surface Sr1 of the first mold 51 form an acute angle. The reinforcing portion 34 has a function of suppressing deformation of the protruding portion 33. The reinforcing part 34 has a first reinforcing part 34A connected to the protruding part 33 and a second reinforcing part 34B connected to the protruding part 33 and the second surface 32B.

  Here, various dimensions of the protrusion 33 will be described with reference to FIG. The width Wd of the protrusion 33 is preferably 3 (mm) or more and 10 (mm) or less. Specifically, for example, 3, 4, 5, 6, 7, 8, 9, and 10 may be in a range between any two of the numerical values exemplified here. In this way, by setting the width Wd of the protruding portion 33 to be long, the entrance of the molten resin intrusion path is more reliably blocked by the moving member 11 and the protruding portion 33.

  Further, the thickness Th of the protrusion 33 is preferably 0.5 (mm) or more and 1.5 (mm) or less. Specifically, for example, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 There may be a range between any two of the numerical values exemplified here. Thus, by setting the thickness Th of the protrusion 33 to be thin, it is possible to more reliably suppress the occurrence of sink marks on the surface of the insert member 30.

<Manufacturing method of embodiment>
FIG. 10 is a flowchart of the manufacturing method according to the embodiment. FIG. 11 is a cross-sectional view showing a state in which the moving process in step S3 has been completed. FIG. 12 is an enlarged view of region C shown in FIG. FIG. 13 is a cross-sectional view showing a state in which the fixing process in step S4 has been completed. FIG. 14 is a cross-sectional view showing a state in which the injection process in step S5 has been completed. 13 and 14 are enlarged views of a region corresponding to the region C shown in FIG. The manufacturing method of the embodiment will be described with reference to FIGS.

  First, the insert member 30 is placed on the core 10 of the first mold 51 (step S1: placement step). Next, the mold 50 is closed (step S2: mold closing process). That is, the second mold 52 moves to the first mold 51 side, and the second mold 52 and the first mold 51 come into contact with each other. In a state where the mold 50 is closed, the mold 50 is formed with a resin filling space Sp filled with a molten resin. The resin filling space Sp is formed between the insert member 30 and the second mold 52. Next, as shown in FIGS. 11 and 12, the pair of moving parts 11A slides through the opening 12, and the tapered portion 11A2 protrudes from the end face Sr1 of the first mold 51 (step S3: moving process).

  As shown in FIGS. 12 and 13, the moving component 11B slides between one moving component 11A and the other moving component 11A (step S4: fixing step). The sliding direction of one moving part 11A and the sliding direction of the other moving part 11B are opposite directions. In step S4, when the moving part 11B slides toward the insert member 30, the moving part 11B pushes away the pair of moving parts 11A. Thereby, each moving component 11A moves from the moving component 11B side to each end portion 31 side of the insert member 30. Accordingly, the tapered portion 11A2 is inserted between the second surface 32B of the plate-like portion 32 and the core contact surface 33A of the protruding portion 33. The end surface 11A22 of the tapered portion 11A2 and the core contact surface 33A of the projecting portion 33 are in contact with each other, and the end surface 11A23 of the tapered portion 11A2 and the second surface 32B of the plate-like portion 32 are in contact with each other. The moving part 11B slides on the opening 12 until the top part 11B1 of the moving part 11B contacts the first surface 32A. As a result, the end surface 11A22 of the tapered portion 11A2 is pressed against the core contact surface 33A, and as a result, the moving component 11A engages with the insert member 30.

  In a state where the moving part 11A is engaged with the insert member 30, the surface 33B is pressed against the placement surface 10A0 of the first mold 51, and the surface 31A of the end 31 is pressed against the end surface Sr1 of the first mold 51. ing. Thereby, in the below-mentioned injection | pouring process, it is suppressed that resin penetrate | invades between the insert member 30 and the 1st metal mold | die 51. FIG. In addition, the end surface 11A23 of the tapered portion 11A2 is also pressed against the second surface 32B of the plate-like portion 32 in a state where the moving component 11A is engaged with the insert member 30. When the end surface 11A23 of the tapered portion 11A2 is pressed against the second surface 32B of the plate-like portion 32, deformation of the insert member 30 is suppressed in an injection process described later. Further, in a state where the moving part 11 </ b> A is engaged with the insert member 30, the tapered portion 11 </ b> A <b> 2 is caught by the protruding portion 33. Thereby, a pair of edge part 31 of the insert member 30 is fixed to the moving member 11 more reliably.

  Next, in the state shown in FIG. 13, the molten resin is injected from the molding machine into the mold 50, whereby the resin flows into the resin filling space Sp through the gate Gt (step S5: injection process). Solid arrows in the resin filling space Sp shown in FIG. 13 schematically show the flow of the resin flowing into the resin filling space Sp. When step S5 is completed, the epidermis 40 is formed on the plate-like portion 32 as shown in FIG. The operations in steps after step S6 are the reverse of the operations in steps S1 to S4. When step S5 is completed, the moving component 11B is separated from the insert member 30, and the moving component 11A does not press the end portion 31. Thereby, fixation of the edge part 31 is cancelled | released (step S6: fixation cancellation | release process). Next, the moving part 11A slides and the top 11A1 enters below the end surface Sr1 of the first mold 51 (step S7: moving process). Next, the mold 50 is opened (step S8: mold opening process). That is, the second mold 52 is separated from the first mold 51. Finally, the integrally molded body is removed from the core 10 of the first mold 51 (step S9: extraction process).

<Operation and Effect of Embodiment>
In the injection step, the resin is injected into the resin filling space Sp with the insert member 30 fixed by the moving member 11 provided in the first mold 51. Thereby, even if the molten resin flows into the resin filling space Sp vigorously, the insert member 30 is unlikely to lift from the first mold 51. Further, since the resin flowing into the resin filling space Sp has a high pressure, it acts to deform the insert member 30. If the insert member 30 is deformed, there is a possibility that a gap for the resin to enter between the insert member 30 and the first mold 51 may be formed. However, since the insert member 30 is fixed to the moving member 11, the insert member 30 is less likely to be deformed.
Thus, in the injection process, the insert member 30 is unlikely to lift from the first mold 51 and the insert member 30 is not easily deformed, so that a gap is formed between the insert member 30 and the first mold 51 for the resin to enter. Is suppressed. For this reason, the manufacturing method according to the embodiment has an effect of suppressing the occurrence of defects such as burrs.

  Here, a case where the end portion 31 of the insert member 30 is not fixed by the moving member 11 and the center portion of the insert member 30 is fixed by the moving member 11 will be considered. In this case, when the molten resin flows into the resin filling space Sp vigorously, the possibility that the insert member 30 is deformed so that the end portion 31 is bent increases. When the end 31 is deformed so as to bend, the molten resin enters between the end 31 and the first mold 51. Therefore, in the injection process, the end 31 of the insert member 30 is fixed by the moving member 11. Thereby, in an injection process, it is controlled that the end 31 of insert member 30 changes so that it may bend. Therefore, in the injection process, the formation of a gap through which the resin enters between the insert member 30 and the first mold 51 is further suppressed. Therefore, the manufacturing method according to the embodiment further enhances the effect of suppressing the occurrence of defects such as burrs.

  In the injection process, the pair of end portions 31 are fixed by the pair of moving parts 11A. For this reason, even if the molten resin flows into the resin-filled space Sp vigorously, a decrease in the posture stability of the insert member 30 is suppressed. Accordingly, in the injection process, the insert member 30 is less likely to lift from the first mold 51 and the insert member 30 is further less likely to deform. Therefore, in the injection process, the formation of a gap through which the resin enters between the insert member 30 and the first mold 51 is further suppressed, and as a result, the manufacturing method of the integrally molded body according to the embodiment causes the occurrence of defects. The suppressed effect is further enhanced.

  In the fixing step, the moving direction of one moving part 11A of the pair of moving parts 11A is opposite to the moving direction of the other moving part 11A of the pair of moving parts 11A. Thereby, the insert member 30 is more securely fixed to the first mold 51.

  In the fixing step, each moving component 11A is slid to each end 31 side by moving the moving component 11B to the insert member 30 side. That is, in the fixing step, the pair of moving parts 11A can be slid by moving the moving part 11B. Thereby, each moving component 11 </ b> A can be engaged with each end 31.

  In the fixing step, each moving component 11A is engaged with each protruding portion 33 protruding to the side where each moving component 11A is provided. Accordingly, each moving part 11 </ b> A is caught by each protrusion 33, and the insert member 30 is securely fixed by the first mold 51. Therefore, the insert member 30 is less likely to lift from the first mold 51 and the insert member 30 is more difficult to deform, and the formation of a gap through which resin enters between the insert member 30 and the first mold 51 is further suppressed. ing. Therefore, the manufacturing method according to the embodiment further enhances the effect of suppressing the occurrence of defects such as burrs.

  Each moving part 11A has a tapered portion 11A2. The tapered portion 11A2 has a triangular shape in plan view. Here, consider a case where the moving component 11A includes a rectangular portion having a rectangular shape in plan view instead of the tapered portion 11A2. In this case, it is assumed that the portion of the insert member 30 where the rectangular portion is inserted is formed along the rectangular portion. Since the insert member 30 is a molded body, various dimensions of the insert member 30 have manufacturing variations. For this reason, if the portion of the insert member 30 where the rectangular portion of the moving member 11 is inserted is narrower than the rectangular portion of the moving member 11, the moving member 11 may not be inserted into the insert member 30. There is. However, since the moving member 11 has the tapered portion 11A2, even if the portion of the insert member 30 into which the tapered portion 11A2 is inserted is narrow due to manufacturing variations of the insert member 30, the moving member 11 is inserted. It can be avoided that the member 30 is not inserted.

  In the fixing step, each tapered portion 11A2 is pressed against each protruding portion 33. Thereby, the contact pressure between the surface 33B of each protrusion 33 and the first mold 51 is increased. In addition, the direction in which the tapered portion 11A2 presses the protruding portion 33 includes a downward component. Therefore, when the tapered portion 11A2 presses the protruding portion 33, the surface 31A of the end portion 31 is pressed against the end surface Sr1 of the first mold 51, and the surface 31A of the end portion 31 and the end surface Sr1 of the first mold 51 Contact pressure increases. Since the contact pressure increases as described above, the molten resin is suppressed from entering between the insert member 30 and the first mold 51. For this reason, the manufacturing method according to the embodiment further enhances the effect of suppressing the occurrence of defects such as burrs.

  The angle of the tip 11A21 of each tapered portion 11A2 is 45 degrees or more. That is, the taper portion 11A2 is prevented from excessively tapering the tip 11A21. Thereby, breakage of the tapered portion 11A2 of the moving part 11A is suppressed.

  When the insert member 30 is manufactured, sinking is more likely to occur on the surface of the insert member 30 as the thickness Th (see FIG. 2) of the protruding portion 33 is increased. For this reason, the thickness Th of the protrusion 33 may be suppressed to about 1.5 (mm), for example. In other words, the protrusion 33 may be thinned so as not to cause sink marks on the surface of the insert member 30. Thus, if the protrusion part 33 is thinned, the intensity | strength of the protrusion part 33 will fall. When the strength of the protrusion 33 decreases, the protrusion 33 is deformed when the molten resin flows into the resin filling space Sp vigorously, and the molten resin enters between the insert member 30 and the first mold 51. The possibility increases. Therefore, the insert member 30 has a reinforcing portion 34 provided so as to intersect with the protruding portion 33. Thereby, in order to prevent sink marks on the surface of the insert member 30, even if the protrusion 33 is thinned, deformation of the protrusion 33 is suppressed. Therefore, in order to prevent sink marks on the surface of the insert member 30, even if the protrusion 33 is thinned, the molten resin is prevented from entering between the insert member 30 and the first mold 51. The

  Since the plate-like portion 32 is plate-like, the plate-like portion 32 is easily floated from the first mold 51 and the plate-like portion 32 is easily deformed when the molten resin flows into the resin-filled space Sp. However, since the manufacturing method according to the embodiment has the above-described various configurations, even if the insert member 30 has the plate-like portion 32, the melt between the insert member 30 and the first mold 51. Intrusion of the resin is suppressed. In addition, in embodiment, although the plate-shaped part 32 becomes a curved aspect, it is not limited to this aspect. Even when the plate-like portion 32 is not curved, the effects and effects described in the embodiment are achieved.

The insert member 30 has a portion 35 that contacts the cavity 20 of the second mold 52 when the mold closing process is completed. Specifically, the part 35 and the cavity 20 are in contact with each other so that no gap is generated. For this reason, even if the molten resin flows into the resin filling space Sp, the floating of the portion 35 and the deformation of the portion 35 are suppressed by the cavity 20. Accordingly, the portion 35 is less likely to lift from the first mold 51 and is less likely to deform than the plate-like portion 32.
On the other hand, the plate-like portion 32 is curved so as to protrude from the first mold 51 side to the second mold 52 side in addition to facing the resin filling space Sp. When the insert member 30 is cooled after being molded, the plate-like portion 32 contracts in the direction of the arrow ar shown in FIG. When the plate-like portion 32 contracts, a gap into which the melted resin enters easily occurs between the plate-like portion 32 and the first mold 51. That is, since the plate-like portion 32 faces the resin-filled space Sp, the plate-like portion 32 is hardly lifted and the plate-like portion 32 is hardly deformed by the cavity 20 of the second mold 52. Since the shape part 32 is curved as described above, a gap between the plate-like part 32 and the first mold 51 is liable to occur where molten resin enters. However, in the manufacturing method according to the embodiment, the insert member 30 is fixed to the first mold 51 by engaging the pair of moving parts 11 </ b> A with the pair of end portions 31. For this reason, even if the plate-like portion 32 faces the resin filling space Sp, the plate-like portion 32 is prevented from being lifted and the plate-like portion 32 is deformed. In addition, the plate-like portion 32 is curved as described above. In addition, it is possible to suppress a gap in which the molten resin enters.

  The insert member 30 is not limited to the aspect having the pair of end portions 31. That is, the insert member 30 may have one end 31. Even if it is such an aspect, there exists an effect | action and effect demonstrated by embodiment.

  The fixing means of the manufacturing method according to the embodiment is an aspect in which the tapered portion 11A2 is hooked on the protruding portion 33, but is not limited to this aspect. For example, the aspect which provided the projection structure in one of the insert member 30 and the moving member 11, and provided the hole structure in which this projection structure is inserted in the other may be sufficient.

  Although the embodiments have been described, these are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10: Core 10A: Mounting surface 10A0: Mounting surface 10A1: Recessed part 10A2: Recessed part 11: Moving member 11A: Moving part 11A1: Top part 11A2: Tapered part 11A21: Tip end 11A22: End face 11A23: End face 11B: Moving part 11B1: Top part 11B2: Pressing portion 12: Opening portion 20: Cavity 30: Insert member 31: End portion 31A: Surface 32: Plate-shaped portion 32A: First surface 32B: Second surface 33: Protruding portion 33A: Surface 33B: Surface 34: Reinforcement Part 34A: First reinforcing part 34B: Second reinforcing part 35: Part 40: Skin body 50: Mold 51: First mold 52: Second mold 100: Integrated molded body Gt: Gate Sp: Resin filled space Sr1 : End surface Sr2: End surface

Claims (9)

A method for producing an integrally molded body using a first mold and a second mold,
A placing process, a mold closing process, a fixing process, and an injection process;
The first mold is formed with an opening through which a moving member engaged with the insert member can move,
The insert member has a first end and a second end;
The moving member has a first moving part and a second moving part,
In the placing step, the insert member is placed on the first mold,
In the mold closing step, a resin-filled space is formed between the second mold and the insert member by closing the first mold and the second mold,
In the fixing step, the first moving part is slid in the first direction from the second end side toward the first end part to engage the first moving part with the first end part. The insert member is formed by sliding the second moving part in the second direction from the first end side toward the second end side to engage the second moving part with the second end part. Is fixed to the first mold,
In the injection step, the resin is injected into the resin-filled space in a state where the insert member is fixed to the first mold. The method of claim 1, comprising:
The method wherein the first direction and the second direction are opposite directions. The method of claim 2, comprising:
The moving member has a third moving part,
The third moving part is provided between the first moving part and the second moving part;
In the fixing step, the first moving part is slid in the first direction and the second moving part is slid in the second direction by moving the third moving part toward the insert member. ,Method. A method according to any one of claims 1 to 3, comprising
The insert member has a first protrusion and a second protrusion,
The first protrusion protrudes to the side where the first moving component is provided,
The second projecting portion projects to the side where the second moving component is provided,
In the fixing step, the first moving part is engaged with the first protrusion and the second moving part is engaged with the second protrusion. The method of claim 4, comprising:
The first moving component has a first tapered portion that engages with the first protrusion,
The second moving component has a second tapered portion that engages with the second protrusion,
In the fixing step, the first tapered portion is pressed against the first protruding portion, and the second tapered portion is pressed against the second protruding portion. 6. A method according to claim 5, wherein
The angle of the tip of the first tapered portion and the angle of the tip of the second tapered portion are 45 degrees or more. A method according to any one of claims 4 to 6, comprising:
The insert member has a reinforcing portion,
The first projecting portion and the second projecting portion are each provided with the reinforcing portion,
The first protrusion and the reinforcing part intersect, and the second protrusion and the reinforcing part intersect. A method for producing an integrally molded body according to any one of claims 1 to 7,
The insert member has a plate-like portion facing the resin filling space,
The first mold has a core on which the plate-like portion is placed,
The method, wherein the second mold has a cavity for accommodating the plate-like portion. It is a manufacturing method of the integrally molded object according to claim 8,
The insert member has a portion that contacts the cavity of the second mold when the mold closing step is completed,
The said plate-shaped part is curving so that it may protrude from the said 1st metal mold | die side to the said 2nd metal mold | die side.