JP5923572B2 - Synthetic resin toy manufacturing method - Google Patents

Description

The present invention relates to a process for producing a synthetic resin synthetic resin toys.

  In toys for playing by young children such as infants, a relatively soft synthetic resin is often used as a material in order to ensure safety during use. When such a resin material is used as a toy material, a desired shape is obtained by joining molded members obtained by molding the resin into an arbitrary shape as necessary. When joining members made of such a resin material, for example, as shown in Patent Document 1, the molded members are joined together by welding connection, or molded as shown in Patent Document 2. The members are joined together with an adhesive.

Japanese Utility Model Publication No. 6-39083 JP 2003-326604 A

  However, joining by welding requires equipment for joining the members by heating them, and there is a risk that costs for preparing such equipment may increase. Also, when bonding members together using an adhesive, the adhesive will stick out so that the aesthetics will not deteriorate or the adhesive will not stick out due to the adhesive protruding from the joint between the members. It is necessary to adhere to the substrate, and the manufacturing cost may increase accordingly.

  In addition, there are various types of adhesives, but when the members are bonded to each other using the adhesive, a specific problem may occur depending on the adhesive used. For example, when members using a soft synthetic resin as a raw material are bonded with an instantaneous adhesive, surface hardening may occur due to a chemical reaction, and the bonded portion may become hard and brittle, resulting in loss of flexibility. In addition, when an instantaneous adhesive is used, since the vapor of the instantaneous adhesive reacts with moisture in the air and hardens and may whiten around the bonded portion, the appearance may be impaired by whitening. . In addition, when an organic solvent adhesive is used as the adhesive, the organic solvent adhesive contains a volatile organic solvent, so that an operator may inhale the organic solvent during the bonding work, and also after bonding. If the toxic solvent remains for a long time, an unpleasant odor may be generated for a long time. Further, when using a silicone-based adhesive as an adhesive, it is necessary to apply a primer as a pretreatment to the part to be bonded, or to modify the surface of the part to be bonded by corona discharge. In addition, it is desirable that the silicone-based adhesive is bonded in a pressurized state, and drying is required for about 24 to 48 hours until the bonding is stabilized, so that the bonding work may be complicated. For these reasons, there is room for improvement in the joining method in a toy that obtains a desired shape by joining members made of a resin material.

The present invention was made in view of the above, the members to each other made of a synthetic resin, while ensuring the appearance, to provide a manufacturing method of easily bonding synthetic resin toys that can the be Objective.

To solve the above problems and achieve the object, synthetic resin toy, a first member is a member obtained by molding a synthetic resin, and the second member is a member obtained by molding a synthetic resin, a synthetic resin And at the time of molding, by molding in a state located between the first member joint that is the joint of the first member and the second member joint that is the joint of the second member, And a third member joined to the first member joint and the second member joint.

  In the synthetic resin toy, it is preferable that a recess into which the third member enters is formed in the first member joint and the second member joint.

  In order to solve the above-described problems and achieve the object, a method for manufacturing a synthetic resin toy according to the present invention includes a step of molding a first member and a second member made of synthetic resin, and the first In a state where the member is held by the first member holding die and the second member is held by the second member holding die, the first member joining portion which is a joining portion of the first member, and the second member Forming a third member to be joined to the first member joint and the second member joint by injecting synthetic resin between the second member joint and the joint. It is characterized by.

  In the synthetic resin toy manufacturing method, the first member is formed with a first member convex portion for pushing the first member into the first member holding mold, and the second member is formed with the second member. Forming a second member protrusion for pushing the second member into the second member holding mold, and pressing the first member protrusion by the second member holding mold when forming the third member By pushing the first member into the first member holding die and pressing the second member convex portion by the first member holding die, the second member is moved to the second member holding die. It is preferable to push into the mold.

  Further, in the above synthetic resin toy manufacturing method, the first member, the second member, and the third member are located inside when the third member is joined to the first member and the second member. The inner member holding member that holds the inner member that enters the inner space is formed into the first member holding mold or the second member holding mold when the third member is formed. It is preferable to form the inner member in a state where the inner member is located in the inner space by connecting and holding the inner member on the inner space side by the inner member holding member.

Manufacturing method of engagement Ru synthetic resin toys to the invention, the members together comprising a synthetic resin, while ensuring the appearance, can easily be joined, an effect that.

FIG. 1 is a perspective view of a synthetic resin toy according to an embodiment. FIG. 2 is a perspective view showing a state before the synthetic resin toy shown in FIG. 1 is integrally molded. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 4 is a cross-sectional view taken along line BB in FIG. FIG. 5 is a side view of the molded first member, the second member, and the third member in a state where the ball is inserted. FIG. 6 is a perspective view of a secondary mold used in the method for manufacturing a synthetic resin toy according to the embodiment. FIG. 7 is a perspective view showing a state in which the upper case portion is removed from the secondary molding die shown in FIG. FIG. 8 is a perspective view showing a state where the first member holding mold and the lower case portion are removed from the secondary molding mold shown in FIG. 7. FIG. 9 is a perspective view showing a state where the second member holding die is removed from the secondary molding die shown in FIG. 10 is a view taken along the line CC in FIG. FIG. 11 is a side view of the first member holding mold shown in FIG. FIG. 12 is a view taken along the line DD in FIG. FIG. 13 is a lower perspective view of the first member holding mold shown in FIG. 11. FIG. 14 is a side view of the second member holding mold shown in FIG. FIG. 15 is an EE arrow view of FIG. 16 is an upper perspective view of the second member holding mold shown in FIG. FIG. 17 is a side view of the ball holding member shown in FIG. 18 is a perspective view of the ball holding member shown in FIG. FIG. 19 is a flowchart showing the procedure of the synthetic resin toy manufacturing method according to the embodiment. FIG. 20 is an explanatory diagram illustrating a state in which the first member convex portion is pressed by the first member convex portion pressing portion of the second member holding mold. FIG. 21 is an explanatory diagram illustrating a state in which the second member convex portion is pressed by the second member convex portion pressing portion of the first member holding mold.

It will be described below in detail with reference to the embodiment of the engagement Ru synthetic resin toys manufacturing method of the present invention with reference to the accompanying drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

Embodiment
FIG. 1 is a perspective view of a synthetic resin toy according to an embodiment. FIG. 2 is a perspective view showing a state before the synthetic resin toy shown in FIG. 1 is integrally molded. The synthetic resin toy 1 shown in FIGS. 1 and 2 is formed in a substantially spherical shape as a whole. Specifically, the synthetic resin toy 1 includes a first member 10 formed in a substantially hemispherical shape, a second member 20 similarly formed in a substantially hemispherical shape, and the first member 10 and the second member. And a third member 30 that joins 20 to each other. That is, the third member 30 is located between the portions corresponding to the split surfaces of the spheres in the hemispheres of the shapes of the first member 10 and the second member 20, and is joined to both the The first member 10 and the second member 20 are formed as members to be joined. The first member 10, the second member 20, and the third member 30 are molded so that the inner space 2 can be formed inside when the third member 30 is joined to the first member 10 and the second member 20. By joining these, it becomes a substantially spherical shape as a whole, and the inner space 2 is formed inside.

  The first member 10, the second member 20, and the third member 30 are all formed by molding a synthetic resin, and are formed of a soft synthetic resin material at room temperature. The synthetic resin used for the first member 10, the second member 20, and the third member 30 is preferably used from among thermoplastic elastomers having types such as styrene, olefin, polyester, and polyurethane. Among the thermoplastic elastomers, SEBS (styrene / ethylene / butylene / styrene copolymer) is preferable. SEBS can be reused even if molding fails, and can be obtained at a stable price. By using SEBS for the first member 10, the second member 20, and the third member 30, mass production is ensured. can do.

  Further, the SEBS used for the first member 10, the second member 20, and the third member 30 is preferably a transparent one, and when colored, it is colored by mixing a pigment with the transparent SEBS. preferable. By using transparent SEBS as the base material, it is possible to increase the bonding strength of the bonding portion when the third member 30 is bonded to the first member 10 and the second member 20.

  Among the first member 10, the second member 20, and the third member 30, the first member 10 has the first member base 11 located at the position farthest from the second member 20, and the first member base 11 A plurality of first member ribs 13 extend from the side toward the second member 20 side. The plurality of first member ribs 13 are each formed in a substantially rod-like shape. Further, the plurality of first member ribs 13 radially extend from the first member base 11 toward the second member 20 side and extend while drawing an arc, whereby the first member 10 is formed as a whole. It is formed in a substantially hemispherical shape.

  Moreover, the several 1st member rib 13 is formed in the substantially rod-shaped shape, and is respectively connected by the 1st member frame part 12 which connects adjacent 1st member rib 13 mutually. The first member frame portion 12 is located between the end on the first member base 11 side and the end on the second member 20 side of the first member rib 13, and in the hemisphere that is the shape of the first member 10, Both ends of the sphere are connected to the first member rib 13 so as to extend in parallel to a surface corresponding to the split surface of the sphere. Thereby, the 1st member frame part 12 is connected with each of the adjacent 1st member rib 13, in other words, the adjacent 1st member rib 13 is connected by the 1st member frame part 12 located between both. Has been.

  Between the adjacent first member ribs 13 in the plurality of first member ribs 13, the first member frame portions 12 formed in this way are disposed between the first member ribs 13, and each first member frame portion is arranged. 12, the position of the first member rib 13 in the length direction is arranged at substantially the same position. Thereby, the several 1st member frame part 12 located between adjacent 1st member ribs 13 is formed in the substantially annular shape, when it sees as a whole.

  The second member 20 is also formed in the same shape as the first member 10, and a plurality of second member ribs 23 extend radially from the second member base 21 while drawing an arc, and adjacent second member ribs 23 are adjacent to each other. A second member frame portion 22 is disposed between them. Thereby, the adjacent 2nd member ribs 23 are connected by the 2nd member frame part 22, and the 2nd member 20 is in the state formed in the substantially hemispherical shape as a whole. The number of the second member ribs 23 is the same as the number of the first member ribs 13 included in the first member 10, and the interval between the second member ribs 23 is the interval between the first member ribs 13. The interval is the same. Thereby, the 1st member 10 and the 2nd member 20 are formed in the almost same shape.

  Further, the third member 30 is formed in a substantially ring shape along the circumference of a circle corresponding to the split surface of the sphere in the hemisphere which is the shape of the first member 10 or the second member 20. The first member 10 is joined to a first member-side joining surface 31 that is a surface facing the first member 10 in the third member 30, and the second member 20 is opposed to the second member 20 in the third member 30. It is joined to the second member side joining surface 32 which is a surface.

  FIG. 3 is a cross-sectional view taken along the line AA of FIG. 4 is a cross-sectional view taken along line BB in FIG. The first member 10 is located at the end on the second member 20 side of each first member rib 13, that is, the end on the third member 30 side, and is a first member joint that is a surface facing the third member 30. The part 14 is joined to the third member 30. Similarly, the second member 20 is a surface that is located at the end of each second member rib 23 on the side of the first member 10, that is, the end of the third member 30, and faces the third member 30. The two-member joint portion 24 is joined to the third member 30. That is, the third member 30 is positioned between the first member joint 14 that is the joint of the first member 10 and the second member joint 24 that is the joint of the second member 20 during molding. Is formed so as to be joined to the first member joint portion 14 and the second member joint portion 24.

  In that case, the 1st member rib 13 and the 2nd member rib 23 are joined to the 3rd member 30 so that the position in the circumferential direction of the 3rd member 30 may become alternate. That is, in the circumferential direction of the third member 30, the second member rib 23 is positioned at a substantially central position between the adjacent first member ribs 13, and is approximately between the adjacent second member ribs 23. The first member rib 13 and the second member rib 23 are joined to the third member 30 so that the first member rib 13 is located at the center position.

  Thus, the first member joint portion 14 joined to the third member 30 is formed with a first member recess 15 which is a recess into which the third member 30 enters, and the second member joined to the third member 30 is formed. A second member recess 25 that is a recess into which the third member 30 enters is formed in the member joint portion 24. At the time of molding the third member 30, the third member 30 is connected to the first member joint 14 and the first member in a state where the synthetic resin constituting the third member 30 has entered the first member recess 15 and the second member recess 25. Joined to the two-member joint 24.

  The first member ribs 13 and the second member ribs 23 have first member protrusions 16 projecting in the inner direction of the sphere on the surface corresponding to the inner surface side of the sphere, that is, the surface forming the inner space 2. And the 2nd member convex part 26 is formed. For example, the first member rib 13 protrudes inward of the hemisphere at a position on the inner surface side of the hemisphere that is the shape of the first member 10 and closer to the end on the side where the first member joint portion 14 is located. The first member convex portion 16 is formed. Further, the second member rib 23 protrudes inward of the hemisphere on the inner surface side of the hemisphere that is the shape of the second member 20 and closer to the end on the side where the second member joint portion 24 is located. The second member convex portion 26 is formed.

  FIG. 5 is a side view of the molded first member, the second member, and the third member in a state where the ball is inserted. In the state where the first member 10 and the second member 20 are joined and integrally formed with the third member 30, the inner space 2 is formed inside, but the synthetic resin toy 1 according to the embodiment has the inner space 2. 2, the ball 50 which is a spherical internal member is inserted. The ball 50 is made of a synthetic resin material different from the first member 10, the second member 20, and the third member 30, and is made of a synthetic resin material harder than the first member 10, the second member 20, and the third member 30. Is formed. The ball 50 is made of, for example, ABS resin. By using the ABS resin, the members forming the ball 50 can be joined to each other by ultrasonic welding at the time of manufacture. Since the ride is good, the appearance can be improved.

  Further, the balls 50 are formed with a diameter larger than the interval between the first member ribs 13 and the interval between the second member ribs 23, whereby the ball 50 is formed between the first member ribs 13 and the second member ribs. It is designed not to go out between 23. A plurality of enclosing members (not shown) made of a hard synthetic resin material and having a small shape such as a spherical shape are encapsulated in the ball 50 in the same manner as the material forming the ball 50. For example, GPPS (general purpose polystyrene) is used as the material of the enclosing member.

  The synthetic resin toy 1 according to the present embodiment is configured as described above, and the operation thereof will be described below. The synthetic resin toy 1 is mainly used when an infant or the like plays. For example, since the synthetic resin toy 1 is formed in a substantially spherical shape, it can be rolled, and the first member 10, the second member 20, and the third member 30 are formed of a soft synthetic resin material. So you can hold and play.

  In addition, the first member 10 and the second member 20 have a plurality of first member ribs 13 and second member ribs 23 arranged radially so that the first member ribs 13, between the ribs, The inside of the space defined by the second member rib 23 and the third member rib 30 can be visually confirmed, and the ball 50 is disposed in this space. For this reason, when the synthetic resin toy 1 is rolled, the ball 50 moving inside can be visually recognized, and the movement of the ball 50 can be enjoyed.

  Further, the ball 50 is formed of a hard synthetic resin material, and a plurality of enclosing members made of a hard synthetic resin material are enclosed therein. For this reason, when the ball 50 moves, the enclosing member in the ball 50 also moves in accordance with this movement, and the enclosing member collides with the inner surface of the ball 50 or the enclosing members collide with each other. Will occur. In particular, by using GPPS as the material of the enclosing member, a good sound is generated. Thereby, when the synthetic resin toy 1 is rolled, the sound generated from the ball 50 can be enjoyed in this way.

  Moreover, since the outer surface of the synthetic resin toy 1 is formed by the first member 10, the second member 20, and the third member 30 made of a soft synthetic resin material, the outer surface of the synthetic resin toy 1 is The part is also soft. For this reason, even when playing with the synthetic resin toy 1 or when the synthetic resin toy 1 hits the body, it is possible to absorb a large impact and suppress a large load from acting on the body.

  Next, the metal mold | die used at the time of manufacture of the synthetic resin toy 1 which concerns on this embodiment is demonstrated. FIG. 6 is a perspective view of a secondary mold used in the method for manufacturing a synthetic resin toy according to the embodiment. At the time of manufacturing the synthetic resin toy 1, a primary molding die (not shown) that is a die used for primary molding, which is molding of the first member 10 and the second member 20, and the third member 30 are injection molded. A secondary molding die 60, which is a die used for secondary molding, which is a molding in which the first member 10, the second member 20, and the third member 30 are integrated, is used. Among these, in the secondary molding die 60, the lower case portion 62 is disposed on the base portion 63, and the upper case portion 61 is disposed on the lower case portion 62. The upper case portion 61 is provided with a resin injection portion 65 for injecting a synthetic resin as a material of the third member 30.

  FIG. 7 is a perspective view showing a state where the upper case is removed from the secondary molding die shown in FIG. 6. FIG. 8 is a perspective view showing a state where the first member holding mold and the lower case portion are removed from the secondary molding mold shown in FIG. 7. The synthetic resin toy 1 includes a first member holding mold 70 that holds the first member 10 when the third member 30 is molded, and a second member holding mold 80 that holds the second member 20. . The first member holding mold 70 and the second member holding mold 80 can hold the two first members 10 and the second member 20, respectively. That is, the synthetic resin toy 1 can mold the third members 30 of the two synthetic resin toys 1 at a time.

  The resin injection part 65 provided in the upper case part 61 is connected to a resin injection path 66 that is a path for feeding the synthetic resin injected from the resin injection part 65 to a position where the third member 30 is molded. The resin injection path 66 branches off from the resin injection portion 65 and extends from the first member holding mold 70 side toward the position where the third member 30 is molded.

  Further, the secondary molding die 60 has a cooling water channel 67 for solidifying the synthetic resin that is a material of the third member 30 by cooling when the third member 30 is molded. The cooling water channel 67 is arranged from the outside of the first member holding die 70 and the second member holding die 80 to the inside of the first member holding die 70 and the second member holding die 80. Cooling water is provided so that it can circulate including the vicinity of the position where the three members 30 are formed.

  FIG. 9 is a perspective view showing a state where the second member holding die is removed from the secondary molding die shown in FIG. 10 is a view taken along the line CC in FIG. A ball holding member 90 that is an internal member holding member that holds the ball 50 is connected to the second member holding die 80 when the third member 30 is molded. The ball holding member 90 can hold the ball 50 in a state where the ball 50 is positioned on the inner surface side of the second member 20.

  FIG. 11 is a side view of the first member holding mold shown in FIG. FIG. 12 is a view taken along the line DD in FIG. FIG. 13 is a lower perspective view of the first member holding mold shown in FIG. 11. The first member holding die 70 can hold the first member 10 on the surface facing the second member holding die 80, and the surface on the side holding the first member 10. A first member holding surface 71 is provided with a first member rib holding portion 72 that holds the first member rib 13 of the first member 10. Specifically, the first member holding mold 70 is formed such that a portion that holds the first member 10 is recessed from the first member holding surface 71 in a substantially hemispherical shape, and the first member rib holding portion. 72 is formed on the wall surface of the substantially hemispherical recess.

  The first member rib holding portion 72 has a width approximately equal to the width of the first member rib 13 and is formed in a plurality of groove shapes that are recessed from the first member holding surface 71. By fitting the first member rib 13, the first member rib 13 can be held. The first member holding mold 70 can hold the first member 10 by holding the first member rib 13 by the first member rib holding portion 72 in this way.

  In addition, the first member holding mold 70 is formed with a third member molding portion 74 that can mold the third member 30 while holding the first member 10. The third member forming portion 74 is located in the vicinity of the first member holding surface 71 in the portion that holds the first member 10 in a substantially hemispherical shape from the first member holding surface 71, and has a first annular shape. It is formed in a shape recessed from the member holding surface 71. That is, the third member molding portion 74 is formed on the circumference of a hemisphere recessed from the first member holding surface 71.

  The third member molding portion 74 can mainly mold the first member side joining surface 31 side of the third member 30. Further, the resin injection path 66 is disposed so that the synthetic resin can be injected with respect to the third member molding portion 74, and the injection portion faces the third member molding portion 74.

  FIG. 14 is a side view of the second member holding mold shown in FIG. FIG. 15 is an EE arrow view of FIG. 16 is an upper perspective view of the second member holding mold shown in FIG. The second member holding mold 80 can hold the second member 20 on the surface facing the first member holding mold 70, and the second member 20 can be held on the surface holding the second member 20. A certain second member holding surface 81 is provided with a second member rib holding portion 82 that holds the second member rib 23 of the second member 20. Specifically, the second member holding mold 80 is formed such that a portion for holding the second member 20 is recessed from the second member holding surface 81 in a substantially hemispherical shape, and the second member rib holding portion 82 is formed on the wall surface of a substantially hemispherical recess.

  The second member rib holding portion 82 is formed in a plurality of groove-like shapes recessed from the second member holding surface 81 with a width approximately the same as the width of the second member rib 23, and each of the second member rib holding portions 82 is formed in the groove. By fitting the second member rib 23, the second member rib 23 can be held. The second member holding mold 80 can hold the second member 20 by holding the second member rib 23 by the second member rib holding portion 82 in this way.

  The second member holding mold 80 is formed with a third member molding portion 84 that can mold the third member 30 while holding the second member 20. The third member forming portion 84 is located in the vicinity of the second member holding surface 81 in the portion that holds the second member 20 by being recessed in a substantially hemispherical shape from the second member holding surface 81, and is in an annular second shape. It is formed in a shape recessed from the member holding surface 81. That is, the third member molding portion 84 is formed on the circumference of a hemisphere recessed from the second member holding surface 81.

  The third member molding portion 84 can mainly mold the second member side joining surface 32 side of the third member 30. The third member 30 can be molded by the third member molding portion 84 and the third member molding portion 74 of the first member holding mold 70.

  In addition, the second member rib holding portion 82 can hold the second member rib 23 with the positions of the first member rib 13 and the second member rib 23 in the circumferential direction of the third member 30 being alternated. It is formed as follows. That is, the second member rib holding portion 82 is a circle of the third member forming portion 84 in a state where the second member holding die 80 and the first member holding die 70 are combined and incorporated in the secondary forming die 60. The positions in the circumferential direction are formed alternately with respect to the first member rib holding portion 72 of the first member holding mold 70.

  The second member holding mold 80 includes a ball holding member 90 that holds the ball 50 inside the first member 10 and the second member 20 when the third member 30 is molded by the secondary molding mold 60. Is formed, and a ball holding member hole 85 is formed as a hole to which the ball holding member 90 is connected. The ball holding member hole 85 is formed in the vicinity of the second member base 21 when the second member 20 is held by the second member holding die 80. It is a hole that communicates the surface on the side holding the two members 20 and the surface on the opposite side.

  Further, the first member holding mold 70 and the second member holding mold 80 are configured to press the first member 10 and the second member 20 when holding the first member 10 and the second member 20. A two-member convex portion pressing portion 73 and a first member convex portion pressing portion 83 are provided.

  Specifically, the first member holding mold 70 is pressed against the second member 20 held by the second member holding mold 80, and the second member rib 23 is pushed into the second member rib holding portion 82. A member convex portion pressing portion 73 is provided. The second member convex portion pressing portion 73 is located near the center between the first member rib holding portions 72 adjacent in the circumferential direction of the third member forming portion 74 and protrudes from the first member holding surface 71. Yes. That is, the second member convex portion pressing portion 73 is a circle of the third member molding portion 74 in a state in which the first member holding die 70 and the second member holding die 80 are combined and incorporated in the secondary molding die 60. The circumferential position is substantially the same as the position of the second member rib holding portion 82 of the second member holding mold 80. Accordingly, the second member convex portion pressing portion 73 contacts the second member convex portion 26 formed on the second member rib 23 held by the second member rib holding portion 82 and presses the second member convex portion 26. It is possible to do.

  The second member holding mold 80 presses the first member 10 held by the first member holding mold 70 and pushes the first member rib 13 into the first member rib holding part 72. A pressing portion 83 is provided. The first member convex portion pressing portion 83 is located near the center between the second member rib holding portions 82 adjacent to each other in the circumferential direction of the third member forming portion 84 and protrudes from the second member holding surface 81. Yes. That is, the first member convex portion pressing portion 83 is a circle of the third member molding portion 84 in a state where the second member holding die 70 and the second member holding die 80 are combined and incorporated in the secondary molding die 60. The position in the circumferential direction is disposed at substantially the same position as the position of the first member rib holding portion 72 of the first member holding mold 70. Accordingly, the first member convex portion pressing portion 83 contacts the first member convex portion 16 formed on the first member rib 13 held by the first member rib holding portion 72 and presses the first member convex portion 16. It is possible to do.

  FIG. 17 is a side view of the ball holding member shown in FIG. 18 is a perspective view of the ball holding member shown in FIG. The ball holding member 90 is formed in a substantially cylindrical shape with a bottom, and has a holding portion 91 that holds the ball 50 on the opening end side of the bottomed cylinder. In the holding portion 91, a holding surface 92 that holds the ball 50 is formed on the inner surface side of the cylinder, and the holding surface 92 is formed by a curved surface having substantially the same diameter as the outer peripheral surface of the ball 50.

  Further, the ball holding member 90 is formed with a rib groove 93 extending along the axial direction of the cylinder from the end on the side where the holding portion 91 is located to the other side. The rib groove portion 93 is formed in a notch shape that communicates from the outer peripheral surface of the ball holding member 90 to the holding surface 92, and a plurality of rib groove portions 93 are formed in the circumferential direction of the ball holding member 90. Specifically, the rib groove portion 93 has a groove width that is approximately the same as the width of the second member rib 23 of the second member 20, and the relative width of the plurality of rib groove portions 93 in the circumferential direction. The position is substantially the same as the relative position of the plurality of second member ribs 23.

  Next, a method for manufacturing the synthetic resin toy 1 according to this embodiment will be described. FIG. 19 is a flowchart showing the procedure of the synthetic resin toy manufacturing method according to the embodiment. When manufacturing the synthetic resin toy 1 according to the embodiment, first, the first member 10 and the second member 20 are primarily molded (step ST11). That is, the first member 10 and the second member 20 are molded using a primary molding die that is a die for molding the first member 10 and the second member 20 by injection molding. Thereby, the 1st member 10 and the 2nd member 20 which consist of synthetic resins are fabricated. Further, in this molding, the first member 10 is provided with the first member convex portion 16 for pushing the first member 10 into the first member holding mold 70 that holds the first member 10 when the third member 30 is molded. The second member 20 is formed with a second member protrusion 26 for pressing the second member 20 into a second member holding mold 80 that holds the second member 20 when the third member 30 is molded.

  Next, the first member 10 and the second member 20 are held by the secondary molding die 60 (step ST12). That is, in order to mold the third member 30, the first member 10 is held by the first member holding mold 70 of the secondary molding die 60, and the second member 20 is held by the second member holding mold 80. . When holding the first member 10 with the first member holding mold 70, the first member rib 13 of the first member 10 is pushed into the first member rib holding portion 72 of the first member holding mold 70, The first member 10 is held by holding the first member rib 13 by the member rib holding portion 72.

  Similarly, when holding the second member 20 with the second member holding die 80, the second member rib 23 of the second member 20 is pushed into the second member rib holding portion 82 of the second member holding die 80. The second member 20 is held by holding the second member rib 23 with the second member rib holding portion 82. At that time, the second member holding die 80 is a ball in a state in which the second member rib 23 of the second member 20 enters the rib groove portion 93 and the ball 50 is positioned on the inner space 2 side of the second member 20. The holding member 90 (see FIGS. 9 and 10) is inserted into the ball holding member hole 85 and connected. Accordingly, the first member 10 and the second member 20 can be held by the secondary molding die 60 in a state where the ball 50 enters the inner space 2. That is, when the third member 30 is molded, the ball holding member 90 that holds the ball 50 entering the inner space 2 is connected to the second member holding die 80, and the ball 50 is held by the ball holding member 90 on the inner space 2 side. By doing so, the ball 50 is molded in a state where it is located in the inner space 2.

  As described above, when the first member rib 13 or the second member rib 23 is pushed into the first member rib holding portion 72 or the second member rib holding portion 82, the first member convex portion of the first member rib 13 is used. 16 and the 2nd member convex part 26 of the 2nd member rib 23 are pressed by pressing. That is, when the third member 30 is formed, the first member 10 is pushed into the first member holding die 70 by pressing the first member convex portion 16 with the second member holding die 80, and the first member holding die 70 is pressed. The second member 20 is pushed into the second member holding mold 80 by pressing the second member convex portion 26 with the mold 70.

  FIG. 20 is an explanatory diagram illustrating a state in which the first member convex portion is pressed by the first member convex portion pressing portion of the second member holding mold. When the first member rib 13 is pushed into the first member rib holding portion 72, the second member holding mold 80 is pressed against the first member convex portion 16 by the first member included in the second member holding die 80. This is performed by the convex pressing portion 83. The first member convex portion pressing portion 83 protrudes from the second member holding surface 81, and the position of the third member molding portion 84 in the circumferential direction is the first member rib holding portion 72 of the first member holding mold 70. It is arrange | positioned in the substantially same position as this position. For this reason, the 2nd member holding surface 81 and the 1st member holding surface 71 are made to oppose in the state which has arranged the 1st member 10 so that the 1st member rib 13 may become the position of the 1st member rib holding part 72. Thus, the first member convex portion pressing portion 83 contacts the first member convex portion 16 formed on the first member rib 13.

  In this state, by moving the first member holding die 70 and the second member holding die 80 in the direction in which the second member holding surface 81 and the first member holding surface 71 approach each other, the first member convex portion pressing portion 83 presses the first member convex portion 16. The first member rib 13 is pushed into the groove-shaped first member rib holding portion 72 by the pressing force applied from the first member convex portion pressing portion 83 to the first member convex portion 16.

  FIG. 21 is an explanatory diagram illustrating a state in which the second member convex portion is pressed by the second member convex portion pressing portion of the first member holding mold. When the second member rib 23 is pushed into the second member rib holding portion 82, the pressing to the second member convex portion 26 by the first member holding mold 70 is the same as when the first member rib 13 is pushed. This is performed by the second member convex portion pressing portion 73 included in the first member holding mold 70. That is, the first member holding surface 71 and the second member holding surface 81 are opposed to each other with the second member 20 disposed so that the second member rib 23 is positioned at the second member rib holding portion 82. In this state, by moving the first member holding mold 70 and the second member holding mold 80 in the direction in which the first member holding surface 71 and the second member holding surface 81 approach each other, the second member convex portion pressing portion 73 presses the second member convex portion 26. The second member rib 23 is pushed into the groove-shaped second member rib holding portion 82 by the pressing force applied from the second member convex portion pressing portion 73 to the second member convex portion 26.

  Thus, after the first member 10 and the second member 20 are held by the secondary molding die 60, the synthetic resin is then injected between the first member joint portion 14 and the second member joint portion 24. Then, the third member 30 is formed (step ST13). That is, the synthetic resin is injected between the first member joint 14 and the second member joint 24 in a state where the first member joint 14 and the second member joint 24 are held by the secondary molding die 60. By doing so, the third member 30 to be joined to the first member joining portion 14 and the second member joining portion 24 is formed.

  The third member 30 is molded in the space defined by the third member molding part 74 of the first member holding mold 70 and the third member molding part 84 of the second member holding mold 80. Molding is performed by injecting a synthetic resin as the material. The synthetic resin that is the material of the third member 30 is substantially the same type of synthetic resin as the synthetic resin that is the material of the first member 10 and the second member 20. For this reason, it becomes the material of the 3rd member 30 in the space defined by the 3rd member shaping | molding parts 74 and 84 in the state which hold | maintained the 1st member 10 and the 2nd member 20 with the secondary shaping die 60. By injecting the synthetic resin, the synthetic resin injected in the softened state is solidified while being bonded to the first member bonding portion 14 and the second member bonding portion 24.

  At that time, the softened synthetic resin enters the first member recess 15 formed in the first member joint 14 and the second member recess 25 formed in the second member joint 24 and enters the first member. It joins to the joining part 14 and the 2nd member joining part 24, and solidifies. Thereby, the 3rd member 30 is joined with the 1st member joined part 14 and the 2nd member joined part 24, forming the 3rd member forming parts 74 and 84, and the 1st member 10 and the 2nd member. 20 is joined. The synthetic resin toy 1 is integrally formed by joining the first member 10 and the second member 20 by the third member 30 in this way.

  When the third member 30 is molded and the third member 30 is solidified, the synthetic resin toy 1 is taken out from the secondary molding die 60 (step ST14). That is, in a state where the first member 10 and the second member 20 are joined by the third member 30, the first member 10 is extracted from the first member holding mold 70, and the second member holding mold 80 removes the second member 20. The member 20 is extracted. Thus, the synthetic resin toy 1 in a state where the ball 50 enters the inner space 2 defined by the first member 10, the second member 20, and the third member 30 integrally formed in a substantially spherical shape. Is taken out from the secondary molding die 60.

  In the synthetic resin toy 1 according to the above embodiment, the third member 30 is located between the first member joint portion 14 of the first member 10 and the second member joint portion 24 of the second member 20. Thus, the third member 30 is joined to the first member joint 14 and the second member joint 24. Thereby, a function as a member that forms a part of the shape of the synthetic resin toy 1 on the third member 30 and a function as a member that joins the first member joint 14 and the second member joint 24. Can also be used. In other words, the third member 30 constituting a part of the appearance of the synthetic resin toy 1 is provided with a function as an adhesive when joining the first member joint 14 and the second member joint 24. Can do. Therefore, the first member joining portion 14 and the second member joining portion 24 can be joined without using an adhesive or a separate joining member, and the protrusion of the adhesive or the joining member becomes the first member 10 or the first member. Protruding from the two members 20 can be suppressed. As a result, the members made of the synthetic resin can be easily joined while ensuring the aesthetic appearance.

  The first member joint 14 is formed with a first member recess 15 into which the third member 30 enters, and the second member joint 24 is formed with a second member recess 25 into which the third member 30 enters. Therefore, the joint strength between the third member 30 and the first member joint 14 and the second member joint 24 can be improved. Thereby, the 3rd member 30 which is a member which constitutes appearance can be joined to the 1st member 10 and the 2nd member 20 with more certainly strong intensity. As a result, the members made of synthetic resin can be more reliably joined while ensuring the aesthetic appearance.

  Moreover, in the manufacturing method of the synthetic resin toy 1 according to the embodiment, after forming the first member 10 and the second member 20, the synthetic resin is interposed between the first member joint portion 14 and the second member joint portion 24. The third member 30 to be joined to the first member joining portion 14 and the second member joining portion 24 is molded. Thereby, the 1st member junction part 14 and the 2nd member junction part 24 can be joined using the 3rd member 30 which comprises a part of external appearance of the synthetic resin toy 1. FIG. Therefore, the first member joining portion 14 and the second member joining portion 24 can be joined without using an adhesive or a separate joining member, and the protrusion of the adhesive or the joining member becomes the first member 10 or the first member. Protruding from the two members 20 can be suppressed. As a result, the members made of the synthetic resin can be easily joined while ensuring the aesthetic appearance.

  Further, when the third member 30 is molded, the first member convex portion 16 is pressed by the first member convex portion pressing portion 83 of the second member holding mold 80, whereby the first member 10 is moved to the first member holding die. Since it pushes into the type | mold 70, when hold | maintaining the 1st member 10 with the 1st member holding | maintenance metal mold | die 70, the 1st member 10 can be arrange | positioned in an appropriate position more reliably. Similarly, the second member 20 is pushed into the second member holding die 80 by pressing the second member convex portion 26 by the second member convex portion pressing portion 73 of the first member holding die 70. When the second member 20 is held by the second member holding mold 80, the second member 20 can be more reliably disposed at an appropriate position. Thereby, when the 3rd member 30 is shape | molded, the 1st member 10 and the 3rd member 30, and the 2nd member 20 and the 3rd member 30 can be more reliably joined by appropriate positional relationship. . As a result, the members made of synthetic resin can be joined more reliably while ensuring the aesthetic appearance.

  Further, when the third member 30 is formed, the ball holding member 90 is connected to the second member holding mold 80 and the ball 50 is formed in a state in which it is located in the inner space 2. Molding can be performed with the ball 50 placed. Thereby, the ball | bowl 50 can be put into the inside of the synthetic resin toy 1 shape | molded integrally by joining the 1st member 10, the 2nd member 20, and the 3rd member 30 which consist of synthetic resins. As a result, it is possible to improve the aesthetics when the members made of synthetic resin are joined together, and the use at the time of use can be expanded by inserting the internal members such as the balls 50 inside.

[Modification]
In the synthetic resin toy 1 and the manufacturing method thereof described above, the first member rib 13 and the second member rib 23 are inserted into the first member rib holding portion 72 and the second member rib holding portion 82 so that the first member rib holding portion 72 and the second member rib holding portion 82 are inserted. The first member 10 is held by the member holding mold 70, or the second member 20 is held by the second member holding mold 80. At that time, the first member rib 13 and the second member rib are used. 23 may be configured to easily enter the first member rib holding portion 72 and the second member rib holding portion 82. For example, the first member rib 13 or the second member rib is formed on the surface of the first member rib 13 that contacts the first member rib holding portion 72 or the surface of the second member rib 23 that contacts the second member rib holding portion 82. A groove or a protrusion along the pushing direction of 23 may be formed. Thus, when the first member rib 13 and the second member rib 23 are pushed into the first member rib holding portion 72 and the second member rib holding portion 82, the first member rib 13 and the second member rib 23 are not grooved. Since it becomes easy to move along the projection, it can be pushed in easily. Thereby, workability | operativity at the time of shape | molding the 3rd member 30 using the secondary shaping die 60 can be improved.

  Moreover, although the synthetic resin toy 1 according to the embodiment includes the ball 50 as an internal member in the inner space 2, the ball 50 may not be inserted. Even when the ball 50 is not inserted, the first member 10 and the second member 20 are primarily molded with a soft synthetic resin, and the first member 10 and the second member 20 are joined with the soft synthetic resin. By forming 30 into a secondary shape, members made of synthetic resin can be easily joined together while ensuring aesthetics.

  Also, the internal member such as the ball 50 may be plural, and the internal member may be other than the ball 50. Regardless of the form, the internal member put in the first member 10, the second member 20, and the third member 30 can be inserted into the internal member when the synthetic resin toy 1 is rolled or swung. Can move, so you can enjoy the change of sound and the like caused by it.

  Further, in the secondary molding die 60 used in the method for manufacturing the synthetic resin toy 1 according to the embodiment, the ball holding member 90 is configured to be connected to the second member holding die 80. However, the ball holding member 90 may be configured to be connected to the first member holding mold 70. The internal member holding member such as the ball holding member 90 is provided so that the internal member such as the ball 50 can be held in the inner space 2 when the third member 30 is formed regardless of the member to be connected. Any configuration may be used.

  Further, the secondary molding die 60 used in the method for manufacturing the synthetic resin toy 1 according to the embodiment is configured so that the secondary molding of the two synthetic resin toys 1 can be performed at a time. The secondary molding dies 60 may be configured to perform secondary molding of the synthetic resin toy 1 with a number other than this. The secondary molding die 60 is configured to be able to perform secondary molding of only one secondary molding die 60 in one secondary molding, or 3 in one secondary molding. You may be comprised so that the secondary shaping | molding of the 2 or more secondary shaping die 60 can be performed.

DESCRIPTION OF SYMBOLS 1 Synthetic resin toy 2 Inner space 10 1st member 13 1st member rib 14 1st member junction part 15 1st member recessed part 16 1st member convex part 20 2nd member 23 2nd member rib 24 2nd member junction part 25 Second member concave portion 26 Second member convex portion 30 Third member 50 Ball (inner member)
60 Secondary Molding Mold 65 Resin Injection Portion 66 Resin Injection Path 70 First Member Holding Mold 71 First Member Holding Surface 72 First Member Rib Holding Portion 73 Second Member Convex Pressing Portion 74 Third Member Molding Portion 80 First Two-member holding mold 81 Second member holding surface 82 Second member rib holding portion 83 First member convex portion pressing portion 84 Third member forming portion 85 Ball holding member hole 90 Ball holding member (inner member holding member)

Claims (2)

The first member made of synthetic resin and the second member are formed, and the first member is formed with a first member convex portion for pushing the first member into the first member holding mold, and the second member is formed with the first member. Forming a second member projection for pushing the second member into the second member holding mold ,
By pressing the first member protrusion by the second member holding mold, holding the first member pushes the first member to the first member holding dies in the first member holding dies , holding the by pressing the second member protrusion by the first member holding dies, the second member pushes the second member to the second member holding dies in the second member holding dies In this state, the first member is injected by injecting a synthetic resin between a first member joint portion that is a joint portion of the first member and a second member joint portion that is a joint portion of the second member. Forming a third member to be joined to the joint and the second member joint;
A synthetic resin toy manufacturing method comprising: The first member, the second member, and the third member are molded so that an inner space can be formed inside when the third member is joined to the first member and the second member,
When forming the third member, an internal member holding member that holds an internal member that enters the inner space is connected to the first member holding die or the second member holding die, and the internal member holding member is used to connect the internal member holding member. by holding the member at the inner space side, the production method of the synthetic resin toy of claim 1, wherein the inner member is formed in a state positioned in the inner space.

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