WO2021038810A1 - Hollow molded article molding die and method for producing hollow molded article - Google Patents

Hollow molded article molding die and method for producing hollow molded article Download PDF

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Publication number
WO2021038810A1
WO2021038810A1 PCT/JP2019/034005 JP2019034005W WO2021038810A1 WO 2021038810 A1 WO2021038810 A1 WO 2021038810A1 JP 2019034005 W JP2019034005 W JP 2019034005W WO 2021038810 A1 WO2021038810 A1 WO 2021038810A1
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WO
WIPO (PCT)
Prior art keywords
molding
hollow
hollow portion
molded body
members
Prior art date
Application number
PCT/JP2019/034005
Other languages
French (fr)
Japanese (ja)
Inventor
朗 吉田
太東 朴
石剛 欧陽
Original Assignee
株式会社Ｎｅｏ
精東鋼塑膠電子製品有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Ｎｅｏ, 精東鋼塑膠電子製品有限公司 filed Critical 株式会社Ｎｅｏ
Priority to JP2021541910A priority Critical patent/JP7290232B2/en
Priority to PCT/JP2019/034005 priority patent/WO2021038810A1/en
Priority to CN201980097051.1A priority patent/CN114502345A/en
Publication of WO2021038810A1 publication Critical patent/WO2021038810A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling

Definitions

  • the present invention relates to a hollow molded body molding die used for molding a hollow molded body and a method for manufacturing the hollow molded body.
  • a molded product made of synthetic resin is molded by various manufacturing methods, and one example is injection molding performed using a molding mold.
  • injection molding a desired molded product can be obtained by pouring a molten resin material into a molding mold and taking it out of the molding mold when the temperature of the resin material drops and the resin material hardens.
  • a hollow molded body having a hollow inside in order to mold the hollow portion inside, not only the molding die for molding the outer shape of the molded body but also the inner shape is formed by entering the inside of the molded body. Molding is also performed using a molding die.
  • an outer shell mold corresponding to the surface shape of the resin hollow resin molded body and a resin hollow resin molded body arranged inside the outer shell mold are provided. It has a divisible mold composed of a plurality of mold parts corresponding to the shape of the hollow portion of the above, and the divisible mold is a hollow of the resin hollow resin molded body after molding of the resin hollow resin molded body. It is divided into pieces that can be pulled out from the part.
  • the molding die for molding the hollow portion is taken out from the hollow molded body after molding. May be difficult.
  • the hollow molded body is a hollow spherical shape and the molding die obtained by molding the hollow portion is taken out from the take-out portion which is a hole formed in the hollow molded body
  • the size of the hollow portion of the sphere is determined by the take-out portion. Compared with, it tends to increase in any direction. In this case, after molding the hollow molded body, it may be very difficult to take out the molding die in which the hollow portion is molded from the taking-out portion.
  • the present invention has been made in view of the above, and is a hollow molded body molding die and a hollow molded body capable of molding a hollow molded body having a large hollow portion as compared with a take-out portion of the molding die for molding the hollow portion.
  • An object of the present invention is to provide a method for producing a molded product.
  • the hollow molded body molding mold according to the present invention includes a plurality of hollow portion molding members for molding a part of a hollow portion of the hollow molded body, and a plurality of the hollow portions.
  • the hollow portion molding member includes a connecting member to which the portion molding member is detachably joined, and the hollow portion molding member is formed into a shape in which the hollow portion can be molded by combining a plurality of the hollow portion molding members.
  • the molding member and the coupling member are hollow portion molding molds that mold the hollow portion by connecting the hollow portion molding member to the coupling member and combining the plurality of hollow portion molding members and the coupling member. It is characterized by being formed as.
  • the hollow molded body molding mold it is preferable that a plurality of the hollow portion molding members are bonded to the coupling member over one circumference in the circumferential direction centering on the coupling member.
  • the hollow molded body molding mold it is preferable that two of the connecting members are provided and the two connecting members are arranged at symmetrical positions about the center of the hollow portion.
  • the two connecting members are connected by a connecting member arranged between the connecting members.
  • the hollow portion molding member is arranged between the two connecting members and both ends are bonded to the two connecting members.
  • the method for manufacturing a hollow molded body according to the present invention is a step of connecting a plurality of hollow portion molding members for molding a hollow portion of the hollow molded body to a connecting member.
  • a hollow portion molding die in which the hollow portion molding member and the coupling member are bonded is placed inside the outer molding die, and the hollow molded body having a take-out portion of the coupling member is placed inside the hollow portion molding die and the outer side.
  • the hollow portion molding member and the coupling member are coupled in a form in which an inner space is formed inside the hollow portion molding mold, and the hollow portion molding member and the coupling member are described.
  • the connecting member is connected by inserting the inner member into the inner space, and the hollow molded body is formed by the hollow portion molding die and the outer molding die having the inner member inserted into the inner space. It is preferable to take out the connecting member and the hollow portion molding member from the take-out portion formed in the hollow molded body to form the hollow molded body in which the internal member is inserted into the hollow portion.
  • the hollow molded body molding die and the method for manufacturing a hollow molded body according to the present invention have an effect that a hollow molded body having a large hollow portion as compared with a take-out portion of the molding die for molding the hollow portion can be molded. Play.
  • FIG. 1 is a perspective view of a hollow molded body molding die and a hollow molded body manufactured by the method for manufacturing a hollow molded body according to an embodiment.
  • FIG. 2 is a perspective view of a molding apparatus used for molding the hollow molded body shown in FIG.
  • FIG. 3 is a perspective view showing a state in which the upper case portion is removed from the molding apparatus shown in FIG.
  • FIG. 4 is a perspective view showing a state in which the upper molding die of the outer molding die and a part of the side molding die shown in FIG. 3 are removed.
  • FIG. 5 is an explanatory view showing a state in which a hollow portion of a hollow molded body is molded by a hollow portion molding die.
  • FIG. 6 is a perspective view of the hollow portion molding mold shown in FIG. FIG.
  • FIG. 7 is an explanatory view showing a state in which a part of the hollow portion molding member of the hollow portion molding mold is removed.
  • FIG. 8 is an explanatory view of connecting the hollow portion forming member to the connecting member.
  • FIG. 9 is a perspective view of the hollow portion molding member.
  • FIG. 10 is a perspective view of the base portion.
  • FIG. 11 is a perspective view of the detachable portion.
  • FIG. 12 is a flow chart showing a procedure of a method for manufacturing a hollow molded product according to an embodiment.
  • FIG. 13 is an explanatory view showing a state in which the internal member is inserted inside the hollow portion molding die.
  • FIG. 14 is an explanatory view showing a state in which the detachable portion is removed from the base portion.
  • FIG. 13 is an explanatory view showing a state in which the internal member is inserted inside the hollow portion molding die.
  • FIG. 15 is an explanatory view showing a state in which the hollow portion molding member is taken out.
  • FIG. 16 is an explanatory view showing a state in which a plurality of hollow portion molding members are taken out.
  • FIG. 17 is an explanatory view showing a modified example of the hollow portion molding mold according to the embodiment.
  • FIG. 1 is a perspective view of the hollow molded body 100 manufactured by the method for manufacturing the hollow molded body molding mold 1 and the hollow molded body 100 according to the embodiment.
  • the hollow molded body 100 shown in FIG. 1 is formed in a substantially spherical shape as a whole.
  • the hollow molded body 100 is formed by molding a synthetic resin, and is formed of a synthetic resin material that is soft at room temperature.
  • a synthetic resin used for the hollow molded product 100 for example, a thermoplastic elastomer having a type such as styrene-based, olefin-based, polyester-based, or polyurethane-based is used.
  • EVA resin is used for the hollow molded body 100.
  • the hollow molded body 100 has a hollow spherical shape, and therefore, the hollow molded body 100 has a hollow portion 105 formed inside. Further, a plurality of holes 102 are formed in the hollow molded body 100.
  • the hole 102 is a hole that penetrates the outside of the hollow molded body 100 and the hollow 105 side. As a result, in the hollow molded body 100, the outside of the hollow molded body 100 and the hollow portion 105 are communicated with each other by the hole portion 102.
  • the holes 102 formed in this way are all formed in a substantially circular shape, and the plurality of holes 102 are formed in a plurality of sizes. That is, the plurality of holes 102 are formed including those having different diameters from each other.
  • the hollow molded body 100 is formed by inserting a spherical internal member 110 into the hollow portion 105.
  • the internal member 110 is made of a synthetic resin material different from that of the hollow molded body 100, and is formed of a synthetic resin material that is harder than the hollow molded body 100.
  • the internal member 110 is formed of, for example, ABS resin. By using ABS resin, hemispherical members are joined to each other by ultrasonic welding at the time of manufacturing the internal member 110 to manufacture a spherical internal member 110. can do. Further, since the ABS resin has good ink transfer during painting, the appearance of the internal member 110 can be improved.
  • the internal member 110 is formed with a diameter larger than the diameter of the hole 102 formed in the hollow molded body 100, whereby the internal member 110 is prevented from coming out of the hole 102. ..
  • a plurality of sealing members (not shown) made of a hard synthetic resin material like the material forming the inner member 110 and formed in a small shape such as a sphere are sealed.
  • GPPS general-purpose polystyrene
  • FIG. 2 is a perspective view of a molding apparatus 70 used for molding the hollow molded body 100 shown in FIG.
  • the hollow molded body 100 is manufactured by using the molding apparatus 70 shown in FIG.
  • the lower case portion 72 is arranged on the base portion 73
  • the upper case portion 71 is arranged on the lower case portion 72.
  • FIG. 3 is a perspective view showing a state in which the upper case portion 71 is removed from the molding apparatus 70 shown in FIG.
  • FIG. 4 is a perspective view showing a state in which the upper molding die 81 and a part of the side molding dies 83 of the outer molding die 80 shown in FIG. 3 are removed.
  • An outer molding die 80 for molding the outer surface shape of the hollow molded body 100 is arranged between the upper case portion 71 and the lower case portion 72 of the molding apparatus 70.
  • the outer molding die 80 is formed between the upper molding die 81 arranged on the upper case portion 71 side, the lower molding die 82 arranged on the lower case portion 72 side, and the upper molding die 81 and the lower molding die 82. It has a side molding mold 83 in which four are arranged in four directions.
  • the inner surface of the upper molding die 81, the lower molding die 82, and the side molding die 83 is an outer molding surface 85 that forms the outer surface shape of the hollow molded body 100, and the upper molding die 81, the lower molding die 82, and the lower molding die 82 By combining each outer molding surface 85 with the side molding mold 83, it is possible to mold the outer surface of the hollow molded body 100. Therefore, the outer molding surface 85 of the outer molding mold 80 has a substantially spherical shape because the outer molding surfaces 85 of the upper molding mold 81, the lower molding mold 82, and the side molding mold 83 are combined to form a continuous shape. It is formed so as to be the outer molded surface 85 of the above.
  • a convex portion 86 for molding the hole 102 of the hollow molded body 100 is formed on the outer molding surface 85 of the outer molding mold 80 formed in this way.
  • the convex portion 86 is formed so as to project inward in a spherical shape having the shape of the outer molded surface 85, so that the hole 102 of the hollow molded body 100 can be formed, and the plurality of holes 102 can be formed.
  • a plurality of convex portions 86 are formed on the outer molding surface 85 in order to mold the outer molding surface 85.
  • a resin injection path 76 which is a path for feeding the synthetic resin injected from the resin injection portion 75 to the position of the outer molding surface 85, is arranged in the vicinity of the outer molding surface 85 of the outer molding mold 80.
  • the resin injection path 76 is arranged between the resin injection portion 75 and the outer molded surface 85, and is formed so as to extend from the resin injection portion 75 toward the position of the outer molded surface 85.
  • FIG. 5 is an explanatory view showing a state in which the hollow portion 105 of the hollow molded body 100 is molded by the hollow portion molding die 10.
  • the hollow molded body molding die 1 according to the present embodiment includes an outer molding die 80 (see FIG. 4) for molding the outer shape of the hollow molded body 100 and a hollow portion molding die 10 for molding the hollow portion 105 of the hollow molded body 100. And have. Since the hollow portion molding die 10 forms the hollow portion 105 from the inside of the hollow molded body 100, when the hollow molded body 100 is molded by the hollow molded body molding die 1, as shown in FIG. 5, the hollow portion molding die 10 is formed. Is in a state of being inside the hollow molded body 100.
  • some of the holes 102 are the coupling member 20 and the hollow portion, which will be described later, which the hollow portion molding mold 10 has after molding the hollow molded body 100. It is formed as a take-out portion 101 for taking out the molding member 30 from the hollow portion 105.
  • FIG. 6 is a perspective view of the hollow portion molding mold 10 shown in FIG. Since the hollow molded body 100 is formed in a substantially spherical shape, the hollow portion 105 (see FIG. 1), which is an inner portion of the hollow molded body 100, is also formed in a substantially spherical shape as a whole. Therefore, the hollow portion molding die 10 for molding the hollow portion 105 also has a substantially spherical surface shape, and the hollow portion molding mold 10 has a substantially spherical surface having the hollow portion 105. It is an inner molding surface 11 to be molded. The hollow portion molding die 10 can form the spherical hollow portion 105 of the hollow molded body 100 by the inner molding surface 11 formed into a substantially spherical shape.
  • the hollow portion molding die 10 has a support member 22 which is a member for holding the hollow portion molding die 10 inside the outer molding die 80 when the hollow molded body 100 is molded by the molding apparatus 70 (see FIG. 2). doing.
  • the support member 22 is arranged at two symmetrical positions about the center of the spherical surface which is the shape of the inner molded surface 11, and the support member 22 is formed in a rod shape along the spherical axis. .. That is, the two support members 22 are arranged on opposite sides of the hollow portion molding die 10 and project in opposite directions.
  • FIG. 7 is an explanatory view showing a state in which a part of the hollow portion molding member 30 included in the hollow portion molding mold 10 is removed.
  • the hollow portion molding die 10 comprises a plurality of hollow portion molding members 30 for molding a part of the hollow portion 105 of the hollow molded body 100, and a coupling member 20 to which the plurality of hollow portion molding members 30 are detachably bonded.
  • two coupling members 20 are provided, and the two coupling members 20 are arranged at symmetrical positions centered on the center of the hollow portion 105 of the hollow molded body 100, and the two support members 22 are arranged at symmetrical positions.
  • One is arranged on each of the two connecting members 20.
  • the two support members 22 are arranged at symmetrical positions centered on the center of the spherical surface, which is the shape of the inner molding surface 11 for molding the hollow portion 105.
  • connecting members 20 are connected by a connecting member 23 arranged between the connecting members 20.
  • the connecting member 23 passes through the inside of the hollow portion molding mold 10 formed in a spherical shape, and connects the inner portions of the spheres in the connecting member 20.
  • FIG. 8 is an explanatory diagram of the coupling of the hollow portion molding member 30 to the coupling member 20.
  • FIG. 9 is a perspective view of the hollow portion molding member 30.
  • FIG. 8 shows that, of the plurality of hollow portion molding members 30, only two hollow portion molding members 30 are coupled to the coupling member 20 so that the bonding state between the coupling member 20 and the hollow portion molding member 30 can be easily understood.
  • Indicates the state of The hollow portion forming member 30 is formed in a shape capable of forming the hollow portion 105 by combining a plurality of hollow portion forming members 30.
  • the plurality of hollow portion molding members 30 included in the hollow portion molding mold 10 are in the case where the hollow portion molding mold 10 formed in a spherical shape has the positions of the two connecting members 20 as two poles.
  • Each boat shape when a plurality of boat shapes are formed by the so-called boat shape polyconic projection is formed in a shape that maintains the shape of a sphere without unfolding. Therefore, the hollow portion forming member 30 is arranged between the two connecting members 20 located at the poles of the sphere, and is formed so as to be curved in a direction convex toward the outside of the sphere.
  • the surface of the hollow portion molding member 30 on the curved and convex side is formed as an inner molding surface 11 for molding the hollow portion 105 of the hollow molded body 100. Further, the hollow portion forming member 30 is formed so that not only the inner forming surface 11 but also the surface on the side corresponding to the inner surface of the hollow portion forming mold 10 is curved in the direction of being convex toward the outside of the sphere. .. Further, since the hollow portion molding member 30 is formed in the shape of each boat in the boat-shaped polyconic projection, in other words, the hollow portion molding member 30 is the hollow of the hollow molded body 100 in the hollow portion molding mold 10. The portion for forming the portion 105 is divided into a plurality of portions in the circumferential direction centered on the straight line connecting the two connecting members 20, and the portion is formed by each of the divided portions.
  • Both ends of the hollow portion forming member 30 arranged between the two connecting members 20 are detachably joined to the two connecting members 20.
  • coupling grooves 31 that can be detachably joined to the coupling member 20 are formed at both ends of the hollow portion forming member 30.
  • the depth direction of the groove is substantially parallel to the direction of the straight line connecting the two connecting members 20, and the width direction of the groove is a circle centered on the straight line connecting the two connecting members 20. It is formed in the radial direction.
  • the two connecting members 20 connected by the connecting member 23 constitute a detachable portion 24 and a base portion 25 that are detachably connected. That is, of the two coupling members 20, one coupling member 20 is provided on the base portion 25, and the other coupling member 20 is provided on the attachment / detachment portion 24 that is removable from the base portion 25. ..
  • the connecting member 23 is provided on the base portion 25, and the attachment / detachment portion 24 can be attached / detached to / from the base portion 25 by attaching / detaching to / from the connecting member 23.
  • FIG. 10 is a perspective view of the base portion 25.
  • the base portion 25 has a connecting member 20, a supporting member 22, and a connecting member 23.
  • the support member 22 and the connecting member 23 are arranged on opposite sides to the connecting member 20, and extend in opposite directions.
  • the end on the opposite side of the end of the connecting member 23 that is connected to the connecting member 20, that is, the tip of the connecting member 23 has a screw portion used for attaching and detaching the attachment / detachment portion 24 to / from the base portion 25. 27 is formed.
  • the connecting member 23 is formed in a round bar shape, and the portion between the end portion on the side connected to the connecting member 20 and the end portion on the side on which the screw portion 27 is formed is curved. doing.
  • the curved portion of the connecting member 23 covers most of the connecting member 23 in the length direction. Therefore, the connecting member 23 has an end portion on the side connected to the connecting member 20 and a screw portion. It is formed in a shape that is mostly separated from the straight line connecting the end on the side where 27 is formed.
  • the coupling member 20 is formed with a coupling convex portion 21 that couples with the coupling groove 31 of the hollow portion molding member 30.
  • the coupling convex portion 21 is formed on the surface of the coupling convex portion 21 on the side where the connecting member 23 is arranged, protrudes to the extending side of the connecting member 23, and has two attachment / detachment portions 24 attached to the base portion 25. It is formed in a shape that is continuously convex over one circumference centered on a straight line connecting the connecting members 20.
  • FIG. 11 is a perspective view of the detachable portion 24.
  • the attachment / detachment portion 24 has a coupling member 20 and a support member 22.
  • the coupling member 20 included in the attachment / detachment portion 24 is formed with a coupling convex portion 21 in the same form as the coupling member 20 included in the base portion 25. That is, the coupling convex portion 21 formed on the attachment / detachment portion 24 is formed on the surface of the coupling member 20 opposite to the surface on which the support member 22 is arranged, and the side on which the support member 22 is arranged. It is formed so as to project in the opposite direction of.
  • the detachable portion 24 has a screw hole 26 screwed with a screw portion 27 formed in the connecting member 23 of the base portion 25 on the surface of the connecting member 20 on the opposite side of the connecting member 20 on the side where the support member 22 is arranged. It is formed.
  • the attachment / detachment portion 24 can be attached to the base portion 25 by screwing the screw portion 27 of the connecting member 23 and the screw hole 26 of the attachment / detachment portion 24.
  • FIG. 12 is a flow chart showing a procedure of a method for manufacturing the hollow molded body 100 according to the embodiment.
  • a plurality of hollow portion molding members 30 for molding the hollow portion 105 of the hollow molded body 100 are joined to the coupling member 20 (step ST11).
  • the coupling groove 31 formed at the end of the hollow portion molding member 30 is fitted into the coupling convex portion 21 formed in the coupling member 20 to be coupled. To do.
  • the attachment / detachment portion 24 is removed from the base portion 25, or the screw portion 27 of the base portion 25 is provided with a few screw holes 26 of the attachment / detachment portion 24. It is screwed, and the attachment / detachment portion 24 is loosely attached to the base portion 25.
  • the coupling grooves 31 at both ends are coupled to the coupling convex portions 21 of the two coupling members 20, respectively. Therefore, for example, when the hollow portion molding member 30 is joined with the attachment / detachment portion 24 removed from the base portion 25, the coupling groove 31 on one end side of all the hollow portion molding members 30 is formed on the base portion 25 side. After being coupled to the coupling convex portion 21 of the coupling member 20, the screw hole 26 of the attachment / detachment portion 24 is screwed into the screw portion 27 of the base portion 25, and the attachment / detachment portion 24 is attached to the base portion 25.
  • each hollow portion molding member 30 is coupled to the coupling convex portion 21 of the coupling member 20 on the attachment / detachment portion 24 side.
  • the coupling grooves 31 at both ends of each hollow portion forming member 30 are coupled to the coupling convex portions 21 of the two coupling members 20, respectively.
  • the hollow portion molding member 30 is coupled to the coupling member 20 in a state where the screw hole 26 of the attachment / detachment portion 24 is slightly screwed into the screw portion 27 of the base portion 25, the hollow portion molding member 30 is divided into two.
  • the coupling grooves 31 at both ends of the hollow portion molding member 30 are formed into the coupling protrusions of the two coupling members 20 while being slantedly inserted between the two coupling members 20 or slightly bending the hollow portion molding member 30. It is shallowly combined with 21.
  • FIG. 13 is an explanatory view showing a state in which the internal member 110 is inserted inside the hollow portion molding die 10.
  • the hollow portion molding mold 10 is formed in a substantially spherical shape, and the hollow portion molding member 30 is curved in a direction that is convex toward the outside of the sphere of the hollow portion molding mold 10, so that a plurality of hollow portion molding members 30 are formed.
  • an inner space 15 which is a space is formed inside.
  • the hollow portion molding member 30 and the coupling member 20 that are coupled when the hollow molded body 100 is molded are coupled in a form in which the inner space 15 is formed inside the hollow portion molding mold 10.
  • the hollow portion molding member for forming the hollow portion molding mold 10 used for molding the hollow portion 105 of the hollow molded body 100 in order to mold the hollow molded body 100 in which the internal member 110 is inserted into the hollow portion 105, the hollow portion molding member for forming the hollow portion molding mold 10 used for molding the hollow portion 105 of the hollow molded body 100.
  • the 30 and the connecting member 20 are joined by inserting the internal member 110 into the inner space 15.
  • the internal member 110 to be inserted into the inner space 15 is manufactured by another manufacturing process. That is, the internal member 110 is manufactured in advance in another manufacturing process, and when the hollow portion molding member 30 and the coupling member 20 are combined to form the hollow portion molding mold 10, the internal member 110 manufactured in advance is manufactured. Is inserted into the inner space 15. At that time, since the connecting member 23 arranged in the inner space 15 and connecting the two connecting members 20 is formed in a curved shape, when the inner member 110 is spherical, the inner member 110 has an inner diameter. Anything larger than the radius of the space 15 can enter the inner space 15.
  • the coupling convex portion 21 into which the coupling groove 31 is fitted when the hollow portion molding member 30 is coupled to the coupling member 20 has a shape that is continuously convex over one circumference centered on a straight line connecting the two coupling members 20. Is formed of. Therefore, when the hollow portion molding member 30 is coupled to the coupling member 20, the plurality of hollow portion molding members 30 are coupled over one circumference centered on a straight line connecting the two coupling members 20. In other words, in the hollow portion forming member 30, a plurality of hollow portion forming members 30 are coupled to the coupling member 20 over one circumference in the circumferential direction centered on the coupling member 20.
  • the plurality of hollow portion molding members 30 are coupled to the coupling member 20 over one circumference in the circumferential direction centered on the coupling member 20, so that there is almost no gap between the adjacent hollow portion molding members 30.
  • the overall shape of the connecting member 20 and the hollow portion forming member 30 which are bonded to the 20 and joined to the 20 is substantially spherical.
  • the hollow portion molding member 30 and the coupling member 20 are formed by combining the hollow portion molding member 30 with the coupling member 20 and the plurality of hollow portion molding members 30 and the coupling member 20 in this way. It is formed as a hollow portion molding die 10 for molding the hollow portion 105 of the above (see FIG. 6). As a result, the hollow portion molding die 10 in which the internal member 110 is inserted into the inner space 15 is formed.
  • the hollow portion molding die 10 in which the hollow portion molding member 30 and the coupling member 20 are bonded is placed inside the outer molding die 80, and the hollow molded body 100 is molded by the hollow portion molding die 10 and the outer molding die 80.
  • Step ST12 the hollow molded body 100 is molded by the hollow portion molding die 10 in which the inner member 110 is inserted into the inner space 15 and the outer molding die 80.
  • the mold 82 and the side mold 83 are arranged between the upper mold 81, the lower mold 82, and the side mold 83 in a state of being separated from each other.
  • the inner molding surface 11 of the hollow portion molding mold 10 and the outer molding surface 85 of the outer molding mold 80 are brought into a state of facing each other.
  • the molding apparatus 70 maintains a state in which the inner molding surface 11 of the hollow portion molding mold 10 and the outer molding surface 85 of the outer molding mold 80 face each other by supporting the support member 22 of the hollow portion molding mold 10. ..
  • the outer molding die 80 is moved while the hollow portion molding die 10 is located between the upper molding die 81, the lower molding die 82, and the side molding die 83, and the outer molding die 80 is formed into the hollow portion. Bring it closer to the mold 10.
  • the outer molding surface 85 of the outer molding mold 80 approaches the inner molding surface 11 of the hollow portion molding mold 10, and the outer molding surface 85 of the outer molding mold 80 and the inner molding surface 11 of the hollow portion molding mold 10 are separated from each other.
  • the distance is such that the hollow molded body 100 can be molded.
  • the convex portion 86 formed on the outer molding surface 85 comes into contact with the inner molding surface 11 of the hollow portion molding mold 10.
  • some of the convex portions 86 are formed so as to surround the support member 22 of the hollow portion molding mold 10.
  • the convex portion 86 formed around the support member 22 of the hollow portion molding die 10 has a diameter larger than that of the connecting member 20 of the hollow portion molding die 10, and is formed by the convex portion 86 in the hollow molded body 100.
  • the hole 102 to be formed becomes a take-out portion 101 from which the coupling member 20 and the hollow portion molding member 30 are taken out.
  • the molding apparatus 70 When the outer molding surface 85 of the outer molding die 80 and the inner molding surface 11 of the hollow portion molding die 10 are at a distance capable of molding the hollow molded body 100, the molding apparatus 70 performs the outer molding surface 85 and the inner molding. Synthetic resin is injected from the resin injection path 76 into the space between the surface 11 and the surface 11. The synthetic resin injected from the resin injection path 76 is injected and then solidified in the space between the outer molded surface 85 and the inner molded surface 11, and the solidified synthetic resin is molded as the hollow molded body 100.
  • the portion where the convex portion 86 is located is formed in the hollow molded body 100 after molding. It is formed as a hole 102. Further, among the plurality of hole portions 102 formed in the hollow molded body 100, some of the hole portions 102 are formed as the take-out portion 101.
  • the size of the opening of the take-out portion 101 is larger than the size of the coupling member 20 and the size of the cross-sectional shape of the hollow portion molding member 30 when viewed in the extending direction of the hollow portion molding member 30. There is.
  • the hollow molded body 100 having the take-out portion 101 from which the connecting member 20 and the hollow portion molding member 30 are taken out is molded by the hollow portion molding die 10 and the outer molding die 80.
  • the coupling member 20 is removed from the hollow portion molding member 30, and the coupling member 20 is taken out from the take-out portion 101 formed in the hollow molded body 100 (step ST13). That is, when the hollow molded body 100 is molded by the hollow portion molding die 10 and the outer molding die 80, first, the outer molding die 80 of the molding apparatus 70 is moved to move the outer molding die 80 from the hollow portion molding die 10. Separate. As a result, the molded hollow molded body 100 and the hollow portion molding die 10 that has entered the hollow portion 105 of the hollow molded body 100 are exposed. Therefore, the hollow molded body 100 and the hollow portion molding die 10 are formed by a molding apparatus. Take out integrally from 70 (see FIG. 5).
  • FIG. 14 is an explanatory view showing a state in which the detachable portion 24 is removed from the base portion 25.
  • the detachable portion 24 is removed from the base portion 25. That is, since the attachment / detachment portion 24 is attached to the base portion 25 by screwing the screw hole 26 formed in the attachment / detachment portion 24 and the screw portion 27 formed in the base portion 25, the attachment / detachment portion 24 is attached to the base portion 25. By removing the screw with the screw portion 27, the detachable portion 24 is removed from the base portion 25.
  • the attachment / detachment portion 24 Since the attachment / detachment portion 24 has the connecting member 20, the hollow portion forming member 30 that connects the joining member 20 of the attachment / detachment portion 24 to the joining member 20 by removing the attachment / detachment portion 24 from the base portion 25. Can be removed from. Further, when the detachable portion 24 is removed from the base portion 25, the connecting member 20 included in the detachable portion 24 is taken out from the take-out portion 101 formed in the hollow molded body 100. As a result, the coupling member 20 is removed from the hollow portion molding member 30, and the coupling member 20 is taken out from the take-out portion 101 formed in the hollow molded body 100.
  • FIG. 15 is an explanatory view showing a state in which the hollow portion molding member 30 is taken out.
  • FIG. 16 is an explanatory view showing a state in which a plurality of hollow portion forming members 30 are taken out.
  • the hollow portion forming member 30 since the cross-sectional shape of the hollow portion forming member 30 when viewed in the extending direction of the hollow portion forming member 30 is smaller than the opening shape of the taking out portion 101, the hollow portion forming member 30 can be taken out from the taking out portion 101. Therefore, the hollow portion forming member 30 takes out the hollow portion forming member 30 exposed to the taking out portion 101 from the taking out portion 101 by taking out the connecting member 20 from the taking out portion 101 in the same manner as the connecting member 20.
  • the plurality of hollow portion forming members 30 are taken out in order from the taking-out portion 101.
  • the internal member 110 is inserted into the inner space 15 of the hollow portion molding die 10, but the internal member 110 is larger than the size of the hole 102 of the hollow molded body 100 including the take-out portion 101. .. Therefore, when the hollow portion forming member 30 is taken out from the taking out portion 101, a plurality of hollow portion forming members 30 are taken out in order while leaving the internal member 110 in the hollow portion 105 of the hollow molded body 100 (see FIG. 16). ..
  • the coupling member 20 included in the base portion 25 may be removed at any stage after being removed from the coupling member 20 included in the attachment / detachment portion 24. That is, the base portion 25 may be taken out from the take-out portion 101 at any stage after the detachable portion 24 is removed.
  • the base portion 25 may be taken out from the take-out portion 101 on the base portion 25 side after the detachable portion 24 is removed and before the hollow portion molding member 30 is taken out from the take-out portion 101, and all the hollow portion molding members 30 may be taken out.
  • the base part 25 may be taken out from the take-out part 101 on the base part 25 side.
  • the base portion 25 may be taken out from the take-out portion 101 on the base portion 25 side while the plurality of hollow portion forming members 30 are being taken out from the take-out portion 101.
  • the hollow portion molding die 10 for molding the hollow portion 105 of the hollow molded body 100 is hollow by taking out the connecting member 20 and the hollow portion molding member 30 from the take-out portion 101 formed in the hollow molded body 100.
  • the part molding die 10 can be taken out from the hollow portion 105 (see FIG. 1).
  • the hollow molded body 100 is molded with the internal member 110 inserted into the inner space 15 of the hollow portion molding die 10, and the connecting member 20 and the hollow portion are molded from the take-out portion 101 formed in the hollow molded body 100.
  • the member 30 it is possible to form the hollow molded body 100 in which the internal member 110 is inserted into the hollow portion 105.
  • the hollow portion molding die 10 for molding the hollow portion 105 of the hollow molded body 100 has a plurality of hollow portion molding members 30 for molding a part of the hollow portion 105.
  • the hollow portion forming member 30 is provided with a connecting member 20 to which the hollow portion forming member 30 is detachably joined.
  • the hollow molded body 100 having a larger hollow portion 105 as compared with the take-out portion 101 of the molding die for molding the hollow portion 105 can be molded, and the hollow molded body having the hollow portion 105 larger than the take-out portion 101 can be molded.
  • 100 can be molded by integral molding.
  • the hollow portion molding die 10 formed by connecting the coupling member 20 and the hollow portion molding member 30 has the size of the coupling member 20 in the plan view direction set to one circumference centered on the coupling member 20. It can be made larger than the size of the coupling member 20.
  • the size of the take-out portion 101 of the hollow molded body 100 is set to a size that allows the connecting member 20 to pass through, the size of the hollow portion molding mold 10 for molding the hollow portion 105 is larger than that of the take-out portion 101. Can be increased to.
  • the hollow molded body 100 having a large hollow portion 105 as compared with the take-out portion 101 can be molded more reliably.
  • the plurality of hollow portion forming members 30 can be more reliably held by the two connecting members 20. As a result, the shape of the hollow portion molding mold 10 formed by connecting the coupling member 20 and the hollow portion molding member 30 can be more easily maintained. Further, since the two connecting members 20 are arranged symmetrically with respect to the center of the hollow portion 105, the shape of the hollow portion molding mold 10 is formed by connecting a plurality of hollow portion forming members 30 to the two connecting members 20. The shapes of the plurality of hollow portion forming members 30 can be made uniform when maintaining the above. As a result, the manufacturability of the hollow portion molding die 10 formed by connecting the plurality of hollow portion molding members 30 to the coupling member 20 can be improved.
  • the shape of the plurality of hollow portion molding members 30 it can be easily assembled when the plurality of hollow portion molding members 30 are combined with the coupling member 20 to assemble the hollow portion molding mold 10. As a result, the hollow molded body 100 having the hollow portion 105 can be molded more easily.
  • the two connecting members 20 are connected by the connecting members 23 arranged between the connecting members 20, they are assembled by connecting the two connecting members 20 and the plurality of hollow portion forming members 30.
  • the assembled state of the hollow portion molding die 10 to be formed can be more easily maintained.
  • the hollow portion molding die 10 is arranged inside the outer molding die 80 without losing its shape. Can be molded.
  • the hollow molded body 100 having the hollow portion 105 can be molded more easily.
  • the hollow portion forming member 30 is arranged between the two connecting members 20 and both ends are bonded to the two connecting members 20, the two connecting members 20 and the plurality of hollow portion forming members 30 are combined.
  • the assembled state of the hollow portion molding die 10 assembled by joining can be more easily maintained.
  • the hollow portion molding die 10 is arranged inside the outer molding die 80 without losing its shape. Can be molded.
  • the hollow molded body 100 having the hollow portion 105 can be molded more easily.
  • the hollow molded body 100 is molded by the hollow portion molding die 10 in which the plurality of hollow portion molding members 30 and the coupling member 20 are bonded and the outer molding die 80.
  • the coupling member 20 is removed from the hollow portion molding member 30 and taken out from the take-out portion 101, and further, the hollow portion molding member 30 is taken out from the take-out portion 101.
  • the connecting member 20 and the hollow portion molding member 30 of the hollow portion molding die 10 can be taken out from the take-out portion 101, respectively. ..
  • the hollow molded body 100 having a larger hollow portion 105 as compared with the take-out portion 101 of the molding die for molding the hollow portion 105 can be molded, and the hollow molded body having the hollow portion 105 larger than the take-out portion 101 can be molded.
  • 100 can be molded by integral molding.
  • the hollow portion molding member 30 and the connecting member 20 are connected by inserting the internal member 110 into the inner space 15 and inserting the internal member 110 into the inner space 15.
  • the coupling member 20 and the hollow portion molding member 30 are taken out from the take-out portion 101.
  • the hollow molded body 100 in which the internal member 110 is inserted into the hollow portion 105 can be integrally molded.
  • the hollow molded body 100 in which the internal member 110 is inserted into the hollow portion 105 is molded, but the internal member 110 may not be inserted into the hollow portion 105. That is, when assembling the hollow portion molding die 10 for molding the hollow portion 105, it is not necessary to insert the internal member 110 into the inner space 15. If the hollow molded body 100 having a large hollow portion 105 can be molded as compared with the take-out portion 101 of the hollow portion molding mold 10 for molding the hollow portion 105, whether or not the internal member 110 is inserted into the hollow portion 105. Does not matter.
  • FIG. 17 is an explanatory view showing a modified example of the hollow portion molding die 10 according to the embodiment.
  • the connecting member 23 for connecting the two connecting members 20 is as shown in FIG. It may be formed in a straight line. By forming the connecting member 23 in a straight line, the manufacturability of the connecting member 23 can be improved.
  • the support member 22 is arranged at two places, but as shown in FIG. 17, the support member 22 may be only at one place.
  • the number of the support members 22 is increased if the support member 22 is arranged so that the hollow portion molding die 10 can be supported by the molding apparatus 70.
  • the shape may be other than the number and shape described in the embodiment.
  • the hollow molded body 100 is formed with a plurality of holes 102 other than the take-out portion 101, but the hole portions 102 other than the take-out portion 101 may not be formed.
  • the hollow molded body 100 is formed in a spherical shape, but the hollow molded body 100 may be formed in a shape other than the spherical shape.
  • the hollow molded body 100 may be formed in a rugby ball shape, for example, or may be formed in a three-dimensional shape such as a rectangular parallelepiped or an octahedron.
  • the overall shape of the hollow molded body 100 does not matter as long as the hollow portion 105 is formed inside.
  • Hollow molded body molding mold 10 Hollow part molding mold 11 Inner molding surface 15 Inner space 20 Coupling member 21 Coupling convex part 22 Support member 23 Connecting member 24 Detachable part 25 Base part 26 Screw hole 27 Threaded part 30 Hollow part molding member 31 Groove 70 Molding device 71 Upper case part 72 Lower case part 73 Base part 75 Resin injection part 76 Resin injection path 80 Outer molding mold 81 Upper molding mold 82 Lower molding mold 83 Side molding mold 85 Outer molding surface 86 Convex part 100 Hollow Molded body 101 Extraction part 102 Hole part 105 Hollow part 110 Internal member

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Abstract

In order to mold a hollow molded article having a larger hollow portion than the take-out portion of the molding die for molding the hollow portion, this hollow molded article molding die 1 comprises a plurality of hollow portion molding members 30 that individually mold some of the hollow portion 105 of a hollow molded article 100, and a joining member 20 to which the plurality of hollow portion molding members 30 are detachably joined. The hollow portion molding members 30 are formed in a shape allowing the hollow portion 105 to be molded by combining the plurality of hollow portion molding members 30, and the hollow portion molding members 30 and joining member 20 are formed as a hollow portion molding die 10 for molding the hollow portion 105 by the hollow portion molding members 30 being joined to the connecting member 20 and the plurality of hollow portion molding members 30 being combined with the connecting member 20.

Description

中空成形体成形型及び中空成形体の製造方法Hollow molding molding mold and manufacturing method of hollow molding
　本発明は、中空成形体の成形に用いる中空成形体成形型と、中空成形体の製造方法に関する。 The present invention relates to a hollow molded body molding die used for molding a hollow molded body and a method for manufacturing the hollow molded body.
　合成樹脂からなる成形体は、様々な製造方法で成形されるが、一例として、成形型を用いて行う射出成形が挙げられる。射出成形では、溶融した樹脂材料を成形型に流し込み、樹脂材料の温度が下がって固まったら成形型から取り出すことにより、所望の成形体を得ることができる。また、内部が中空となる中空成形体では、内側の中空部分の成形を行うために、成形体の外側形状を成形する成形型のみでなく、成形体の内側に入り込ませて内側形状を成形する成形型も用いて成形を行う。 A molded product made of synthetic resin is molded by various manufacturing methods, and one example is injection molding performed using a molding mold. In injection molding, a desired molded product can be obtained by pouring a molten resin material into a molding mold and taking it out of the molding mold when the temperature of the resin material drops and the resin material hardens. Further, in a hollow molded body having a hollow inside, in order to mold the hollow portion inside, not only the molding die for molding the outer shape of the molded body but also the inner shape is formed by entering the inside of the molded body. Molding is also performed using a molding die.
　例えば、特許文献１に記載された曲り樹脂管の射出成形型構造では、中空の曲り樹脂管の成形を行うために、外周を形成するための外周形成部の内側に分割中子を入れて成形しており、これにより、中空の曲り樹脂管の成形を行っている。また、特許文献２に記載された樹脂中空成形体の製造方法では、樹脂中空樹脂成形体の表面形状に対応する外殻金型と、外殻金型の内部に配置されて樹脂中空樹脂成形体の中空部形状に対応する、複数の金型部分から構成された分割可能な金型とを有し、分割可能な金型は、樹脂中空樹脂成形体の成形後に、樹脂中空樹脂成形体の中空部から抜き取ることができる大きさに分割して抜き取っている。 For example, in the injection-molded structure of a bent resin pipe described in Patent Document 1, in order to mold a hollow bent resin pipe, a split core is inserted inside an outer peripheral forming portion for forming an outer peripheral. As a result, a hollow bent resin pipe is formed. Further, in the method for producing a resin hollow molded body described in Patent Document 2, an outer shell mold corresponding to the surface shape of the resin hollow resin molded body and a resin hollow resin molded body arranged inside the outer shell mold are provided. It has a divisible mold composed of a plurality of mold parts corresponding to the shape of the hollow portion of the above, and the divisible mold is a hollow of the resin hollow resin molded body after molding of the resin hollow resin molded body. It is divided into pieces that can be pulled out from the part.
特開２０００－３０１５７３号公報Japanese Unexamined Patent Publication No. 2000-301573 特開２００２－２１０７４７号公報JP-A-2002-210747
　しかしながら、中空成形体における中空部の大きさが、中空部を成形する成形型を取り出す部分に対して複数の方向で大きい場合、中空部を成形する成形型を成形後の中空成形体から取り出すのが困難になる虞がある。例えば、中空成形体が中空の球状である場合において、中空部を成形した成形型を、中空成形体に形成される孔である取出し部から取り出す場合、球の中空部の大きさは、取出し部と比較していずれの方向において大きくなり易くなる。この場合、中空成形体の成形後に、中空部を成形した成形型を取出し部から取り出すのは、非常に困難になる虞がある。このため、中空成形体の中空部を成形型によって成形し、中空部を成形した成形型を、中空成形体の成形後に取り出すのは、中空部の形状や大きさによっては非常に困難なものとなることがあり、成形型の取出し部と比較して大きな中空部を有する中空成形体を成形するのは、大変困難なものとなっていた。 However, when the size of the hollow portion in the hollow molded body is large in a plurality of directions with respect to the portion from which the molding die for molding the hollow portion is taken out, the molding die for molding the hollow portion is taken out from the hollow molded body after molding. May be difficult. For example, when the hollow molded body is a hollow spherical shape and the molding die obtained by molding the hollow portion is taken out from the take-out portion which is a hole formed in the hollow molded body, the size of the hollow portion of the sphere is determined by the take-out portion. Compared with, it tends to increase in any direction. In this case, after molding the hollow molded body, it may be very difficult to take out the molding die in which the hollow portion is molded from the taking-out portion. For this reason, it is very difficult to mold the hollow portion of the hollow molded body by a molding die and take out the molded die obtained by molding the hollow portion after molding the hollow molded body, depending on the shape and size of the hollow portion. It has become very difficult to mold a hollow molded body having a large hollow portion as compared with the take-out portion of the molding mold.
　本発明は、上記に鑑みてなされたものであって、中空部を成形する成形型の取出し部と比較して大きな中空部を有する中空成形体を成形することのできる中空成形体成形型及び中空成形体の製造方法を提供することを目的とする。 The present invention has been made in view of the above, and is a hollow molded body molding die and a hollow molded body capable of molding a hollow molded body having a large hollow portion as compared with a take-out portion of the molding die for molding the hollow portion. An object of the present invention is to provide a method for producing a molded product.
　上述した課題を解決し、目的を達成するために、本発明に係る中空成形体成形型は、中空成形体の中空部の一部をそれぞれ成形する複数の中空部成形部材と、複数の前記中空部成形部材が着脱自在に結合する結合部材と、を備え、前記中空部成形部材は、複数の前記中空部成形部材が組み合わされることにより前記中空部を成形可能な形状に形成され、前記中空部成形部材と前記結合部材とは、前記中空部成形部材が前記結合部材に結合して複数の前記中空部成形部材と前記結合部材とが組み合わされることにより、前記中空部を成形する中空部成形型として形成されることを特徴とする。 In order to solve the above-mentioned problems and achieve the object, the hollow molded body molding mold according to the present invention includes a plurality of hollow portion molding members for molding a part of a hollow portion of the hollow molded body, and a plurality of the hollow portions. The hollow portion molding member includes a connecting member to which the portion molding member is detachably joined, and the hollow portion molding member is formed into a shape in which the hollow portion can be molded by combining a plurality of the hollow portion molding members. The molding member and the coupling member are hollow portion molding molds that mold the hollow portion by connecting the hollow portion molding member to the coupling member and combining the plurality of hollow portion molding members and the coupling member. It is characterized by being formed as.
　また、上記中空成形体成形型において、前記中空部成形部材は、前記結合部材を中心とする周方向の１周に亘って複数の前記中空部成形部材が前記結合部材に結合することが好ましい。 Further, in the hollow molded body molding mold, it is preferable that a plurality of the hollow portion molding members are bonded to the coupling member over one circumference in the circumferential direction centering on the coupling member.
　また、上記中空成形体成形型において、前記結合部材は２つが備えられると共に、２つの前記結合部材は、前記中空部の中心を中心とする対称位置に配置されることが好ましい。 Further, in the hollow molded body molding mold, it is preferable that two of the connecting members are provided and the two connecting members are arranged at symmetrical positions about the center of the hollow portion.
　また、上記中空成形体成形型において、２つの前記結合部材は、前記結合部材同士の間に亘って配置される連結部材により連結されることが好ましい。 Further, in the hollow molded body molding mold, it is preferable that the two connecting members are connected by a connecting member arranged between the connecting members.
　また、上記中空成形体成形型において、前記中空部成形部材は、２つの前記結合部材の間に亘って配置され、２つの前記結合部材に両端が結合されることが好ましい。 Further, in the hollow molded body molding mold, it is preferable that the hollow portion molding member is arranged between the two connecting members and both ends are bonded to the two connecting members.
　また、上述した課題を解決し、目的を達成するために、本発明に係る中空成形体の製造方法は、中空成形体の中空部を成形する複数の中空部成形部材を結合部材に結合する工程と、前記中空部成形部材と前記結合部材とが結合された中空部成形型を外側成形型の内側に入れ、前記結合部材の取出し部を有する前記中空成形体を前記中空部成形型と前記外側成形型とで成形する工程と、前記結合部材を前記中空部成形部材から取り外し、前記結合部材を前記中空成形体に形成される前記取出し部から取り出す工程と、前記中空部成形部材を前記中空成形体に形成される前記取出し部から取り出す工程と、を含むことを特徴とする。 Further, in order to solve the above-mentioned problems and achieve the object, the method for manufacturing a hollow molded body according to the present invention is a step of connecting a plurality of hollow portion molding members for molding a hollow portion of the hollow molded body to a connecting member. A hollow portion molding die in which the hollow portion molding member and the coupling member are bonded is placed inside the outer molding die, and the hollow molded body having a take-out portion of the coupling member is placed inside the hollow portion molding die and the outer side. A step of molding with a molding die, a step of removing the connecting member from the hollow portion molding member, a step of removing the connecting member from the taking-out portion formed in the hollow molded body, and a step of removing the hollow portion molding member from the hollow molding. It is characterized by including a step of taking out from the taking-out portion formed on the body.
　また、上記中空成形体の製造方法において、前記中空部成形部材と前記結合部材とは、前記中空部成形型の内側に内側空間が形成される形態で結合すると共に、前記中空部成形部材と前記結合部材とは、前記内側空間に内部部材を入り込ませて結合し、前記中空成形体の成形は、前記内側空間に前記内部部材を入り込ませた前記中空部成形型と前記外側成形型とで行い、前記中空成形体に形成される前記取出し部から前記結合部材と前記中空部成形部材とを取り出すことにより、前記中空部に前記内部部材が入り込んだ前記中空成形体を形成することが好ましい。 Further, in the method for manufacturing a hollow molded body, the hollow portion molding member and the coupling member are coupled in a form in which an inner space is formed inside the hollow portion molding mold, and the hollow portion molding member and the coupling member are described. The connecting member is connected by inserting the inner member into the inner space, and the hollow molded body is formed by the hollow portion molding die and the outer molding die having the inner member inserted into the inner space. It is preferable to take out the connecting member and the hollow portion molding member from the take-out portion formed in the hollow molded body to form the hollow molded body in which the internal member is inserted into the hollow portion.
　本発明に係る中空成形体成形型及び中空成形体の製造方法は、中空部を成形する成形型の取出し部と比較して大きな中空部を有する中空成形体を成形することができる、という効果を奏する。 The hollow molded body molding die and the method for manufacturing a hollow molded body according to the present invention have an effect that a hollow molded body having a large hollow portion as compared with a take-out portion of the molding die for molding the hollow portion can be molded. Play.
図１は、実施形態に係る中空成形体成形型及び中空成形体の製造方法で製造する中空成形体の斜視図である。FIG. 1 is a perspective view of a hollow molded body molding die and a hollow molded body manufactured by the method for manufacturing a hollow molded body according to an embodiment. 図２は、図１に示す中空成形体の成形に用いる成形装置の斜視図である。FIG. 2 is a perspective view of a molding apparatus used for molding the hollow molded body shown in FIG. 図３は、図２に示す成形装置から上側ケース部を取り除いた状態を示す斜視図である。FIG. 3 is a perspective view showing a state in which the upper case portion is removed from the molding apparatus shown in FIG. 図４は、図３に示す外側成形型の上部成形型と一部の側部成形型を取り除いた状態を示す斜視図である。FIG. 4 is a perspective view showing a state in which the upper molding die of the outer molding die and a part of the side molding die shown in FIG. 3 are removed. 図５は、中空成形体の中空部を中空部成形型によって成形する状態を示す説明図である。FIG. 5 is an explanatory view showing a state in which a hollow portion of a hollow molded body is molded by a hollow portion molding die. 図６は、図５に示す中空部成形型の斜視図である。FIG. 6 is a perspective view of the hollow portion molding mold shown in FIG. 図７は、中空部成形型が有する一部の中空部成形部材を取り除いた状態を示す説明図である。FIG. 7 is an explanatory view showing a state in which a part of the hollow portion molding member of the hollow portion molding mold is removed. 図８は、結合部材に対する中空部成形部材の結合についての説明図である。FIG. 8 is an explanatory view of connecting the hollow portion forming member to the connecting member. 図９は、中空部成形部材の斜視図である。FIG. 9 is a perspective view of the hollow portion molding member. 図１０は、ベース部の斜視図である。FIG. 10 is a perspective view of the base portion. 図１１は、着脱部の斜視図である。FIG. 11 is a perspective view of the detachable portion. 図１２は、実施形態に係る中空成形体の製造方法の手順を示すフロー図である。FIG. 12 is a flow chart showing a procedure of a method for manufacturing a hollow molded product according to an embodiment. 図１３は、中空部成形型の内側に内部部材を入り込ませた状態を示す説明図である。FIG. 13 is an explanatory view showing a state in which the internal member is inserted inside the hollow portion molding die. 図１４は、着脱部をベース部から取り外した状態を示す説明図である。FIG. 14 is an explanatory view showing a state in which the detachable portion is removed from the base portion. 図１５は、中空部成形部材を取り出した状態を示す説明図である。FIG. 15 is an explanatory view showing a state in which the hollow portion molding member is taken out. 図１６は、複数の中空部成形部材を取り出した状態を示す説明図である。FIG. 16 is an explanatory view showing a state in which a plurality of hollow portion molding members are taken out. 図１７は、実施形態に係る中空部成形型の変形例を示す説明図である。FIG. 17 is an explanatory view showing a modified example of the hollow portion molding mold according to the embodiment.
　以下に、本開示に係る中空成形体成形型及び中空成形体の製造方法の実施形態を図面に基づいて詳細に説明する。なお、この実施形態によりこの発明が限定されるものではない。また、下記実施形態における構成要素には、当業者が置換可能、且つ、容易に想到できるもの、或いは実質的に同一のものが含まれる。 Hereinafter, embodiments of the hollow molded body molding die and the method for manufacturing the hollow molded body according to the present disclosure will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily conceived by those skilled in the art, or those that are substantially the same.
［実施形態］
　図１は、実施形態に係る中空成形体成形型１及び中空成形体１００の製造方法で製造する中空成形体１００の斜視図である。図１に示す中空成形体１００は、全体として略球体状の形状で形成されている。中空成形体１００は、合成樹脂を成形することのより形成されており、常温にて軟質の合成樹脂材料によって形成されている。中空成形体１００に用いる合成樹脂としては、例えば、スチレン系、オレフィン系、ポリエステル系、ポリウレタン系等の種類を有する熱可塑性エラストマーが用いられる。本実施形態では、中空成形体１００には、ＥＶＡ樹脂が用いられている。 [Embodiment]
FIG. 1 is a perspective view of the hollow molded body 100 manufactured by the method for manufacturing the hollow molded body molding mold 1 and the hollow molded body 100 according to the embodiment. The hollow molded body 100 shown in FIG. 1 is formed in a substantially spherical shape as a whole. The hollow molded body 100 is formed by molding a synthetic resin, and is formed of a synthetic resin material that is soft at room temperature. As the synthetic resin used for the hollow molded product 100, for example, a thermoplastic elastomer having a type such as styrene-based, olefin-based, polyester-based, or polyurethane-based is used. In this embodiment, EVA resin is used for the hollow molded body 100.
　中空成形体１００は、中空の球体状になっており、このため、中空成形体１００は、内側に中空部１０５が形成されている。また、中空成形体１００には、複数の孔部１０２が形成されている。孔部１０２は、中空成形体１００の外側と中空部１０５側とを貫通する孔になっている。これにより、中空成形体１００は、中空成形体１００の外側と中空部１０５とが、孔部１０２によって連通している。このように形成される孔部１０２は、全て略円形の形状で形成されており、また、複数の孔部１０２は、複数の大きさで形成されている。即ち、複数の孔部１０２は、互いに直径が異なるものを含んで形成されている。 The hollow molded body 100 has a hollow spherical shape, and therefore, the hollow molded body 100 has a hollow portion 105 formed inside. Further, a plurality of holes 102 are formed in the hollow molded body 100. The hole 102 is a hole that penetrates the outside of the hollow molded body 100 and the hollow 105 side. As a result, in the hollow molded body 100, the outside of the hollow molded body 100 and the hollow portion 105 are communicated with each other by the hole portion 102. The holes 102 formed in this way are all formed in a substantially circular shape, and the plurality of holes 102 are formed in a plurality of sizes. That is, the plurality of holes 102 are formed including those having different diameters from each other.
　また、中空成形体１００は、中空部１０５に、球形の内部部材１１０が入り込んで形成されている。内部部材１１０は、中空成形体１００とは異なる合成樹脂材料からなり、中空成形体１００よりも硬質の合成樹脂材料によって形成されている。内部部材１１０は、例えばＡＢＳ樹脂により形成されており、ＡＢＳ樹脂を用いることにより、内部部材１１０の製造時に、半球状の部材同士を超音波溶着によって接合することにより、球形の内部部材１１０を製造することができる。また、ＡＢＳ樹脂は塗装時におけるインクの乗りが良好であるため、内部部材１１０の外観を向上させることができる。 Further, the hollow molded body 100 is formed by inserting a spherical internal member 110 into the hollow portion 105. The internal member 110 is made of a synthetic resin material different from that of the hollow molded body 100, and is formed of a synthetic resin material that is harder than the hollow molded body 100. The internal member 110 is formed of, for example, ABS resin. By using ABS resin, hemispherical members are joined to each other by ultrasonic welding at the time of manufacturing the internal member 110 to manufacture a spherical internal member 110. can do. Further, since the ABS resin has good ink transfer during painting, the appearance of the internal member 110 can be improved.
　また、内部部材１１０は、中空成形体１００に形成される孔部１０２の直径よりも大きな直径で形成されており、これにより内部部材１１０は、孔部１０２から外に出ないようになっている。また、内部部材１１０内には、内部部材１１０を形成する材料と同様に硬質の合成樹脂材料からなり、球状等の小さな形状で形成される封入部材（図示省略）が、複数封入されている。封入部材の材料としては、例えばＧＰＰＳ（汎用ポリスチレン）が用いられる。 Further, the internal member 110 is formed with a diameter larger than the diameter of the hole 102 formed in the hollow molded body 100, whereby the internal member 110 is prevented from coming out of the hole 102. .. Further, in the inner member 110, a plurality of sealing members (not shown) made of a hard synthetic resin material like the material forming the inner member 110 and formed in a small shape such as a sphere are sealed. As the material of the encapsulating member, for example, GPPS (general-purpose polystyrene) is used.
　図２は、図１に示す中空成形体１００の成形に用いる成形装置７０の斜視図である。中空成形体１００の製造は、図２に示す成形装置７０を用いて行う。成形装置７０は、ベース部７３上に下側ケース部７２が配置され、下側ケース部７２上に上側ケース部７１が配置されている。上側ケース部７１には、中空成形体１００の材料となる合成樹脂を注入する樹脂注入部７５が配置されている。 FIG. 2 is a perspective view of a molding apparatus 70 used for molding the hollow molded body 100 shown in FIG. The hollow molded body 100 is manufactured by using the molding apparatus 70 shown in FIG. In the molding apparatus 70, the lower case portion 72 is arranged on the base portion 73, and the upper case portion 71 is arranged on the lower case portion 72. A resin injection portion 75 for injecting synthetic resin, which is a material of the hollow molded body 100, is arranged in the upper case portion 71.
　図３は、図２に示す成形装置７０から上側ケース部７１を取り除いた状態を示す斜視図である。図４は、図３に示す外側成形型８０の上部成形型８１と一部の側部成形型８３を取り除いた状態を示す斜視図である。成形装置７０の上側ケース部７１と下側ケース部７２との間には、中空成形体１００の外面形状を成形する外側成形型８０が配置されている。外側成形型８０は、上側ケース部７１側に配置される上部成形型８１と、下側ケース部７２側に配置される下部成形型８２と、上部成形型８１と下部成形型８２との間で４つが４方向に配置される側部成形型８３とを有している。 FIG. 3 is a perspective view showing a state in which the upper case portion 71 is removed from the molding apparatus 70 shown in FIG. FIG. 4 is a perspective view showing a state in which the upper molding die 81 and a part of the side molding dies 83 of the outer molding die 80 shown in FIG. 3 are removed. An outer molding die 80 for molding the outer surface shape of the hollow molded body 100 is arranged between the upper case portion 71 and the lower case portion 72 of the molding apparatus 70. The outer molding die 80 is formed between the upper molding die 81 arranged on the upper case portion 71 side, the lower molding die 82 arranged on the lower case portion 72 side, and the upper molding die 81 and the lower molding die 82. It has a side molding mold 83 in which four are arranged in four directions.
　上部成形型８１と下部成形型８２と側部成形型８３とは、内面が、中空成形体１００の外面形状を形成する外側成形面８５になっており、上部成形型８１と下部成形型８２と側部成形型８３との各外側成形面８５が組み合わされることにより、中空成形体１００の外面を成形することが可能になっている。このため、外側成形型８０の外側成形面８５は、上部成形型８１と下部成形型８２と側部成形型８３との各外側成形面８５が組み合わされて連続する形状になることにより、略球形の外側成形面８５になるように形成されている。 The inner surface of the upper molding die 81, the lower molding die 82, and the side molding die 83 is an outer molding surface 85 that forms the outer surface shape of the hollow molded body 100, and the upper molding die 81, the lower molding die 82, and the lower molding die 82 By combining each outer molding surface 85 with the side molding mold 83, it is possible to mold the outer surface of the hollow molded body 100. Therefore, the outer molding surface 85 of the outer molding mold 80 has a substantially spherical shape because the outer molding surfaces 85 of the upper molding mold 81, the lower molding mold 82, and the side molding mold 83 are combined to form a continuous shape. It is formed so as to be the outer molded surface 85 of the above.
　このように形成される外側成形型８０の外側成形面８５には、中空成形体１００の孔部１０２を成形するための凸部８６が形成されている。凸部８６は、外側成形面８５の形状である球形の内側方向に突出して形成されることにより、中空成形体１００の孔部１０２を成形することが可能になっており、複数の孔部１０２を成形するために、外側成形面８５には凸部８６が複数形成されている。 On the outer molding surface 85 of the outer molding mold 80 formed in this way, a convex portion 86 for molding the hole 102 of the hollow molded body 100 is formed. The convex portion 86 is formed so as to project inward in a spherical shape having the shape of the outer molded surface 85, so that the hole 102 of the hollow molded body 100 can be formed, and the plurality of holes 102 can be formed. A plurality of convex portions 86 are formed on the outer molding surface 85 in order to mold the outer molding surface 85.
　外側成形型８０の外側成形面８５の近傍には、樹脂注入部７５から注入された合成樹脂を、外側成形面８５の位置まで送り込む経路である樹脂射出経路７６が配置されている。樹脂射出経路７６は、樹脂注入部７５と外側成形面８５との間に亘って配置されており、樹脂注入部７５から、外側成形面８５の位置に向かって延びて形成されている。 A resin injection path 76, which is a path for feeding the synthetic resin injected from the resin injection portion 75 to the position of the outer molding surface 85, is arranged in the vicinity of the outer molding surface 85 of the outer molding mold 80. The resin injection path 76 is arranged between the resin injection portion 75 and the outer molded surface 85, and is formed so as to extend from the resin injection portion 75 toward the position of the outer molded surface 85.
　図５は、中空成形体１００の中空部１０５を中空部成形型１０によって成形する状態を示す説明図である。本実施形態に係る中空成形体成形型１は、中空成形体１００の外側形状を成形する外側成形型８０（図４参照）と、中空成形体１００の中空部１０５を成形する中空部成形型１０とを有している。中空部成形型１０は、中空成形体１００の内側から中空部１０５を成形するため、中空成形体成形型１によって中空成形体１００を成形した場合、図５に示すように、中空部成形型１０は、中空成形体１００の内側に入り込んだ状態になる。また、中空成形体１００に形成される複数の孔部１０２のうち、一部の孔部１０２は、中空成形体１００の成形後に、中空部成形型１０が有する、後述する結合部材２０や中空部成形部材３０を中空部１０５から取り出す取出し部１０１として形成されている。 FIG. 5 is an explanatory view showing a state in which the hollow portion 105 of the hollow molded body 100 is molded by the hollow portion molding die 10. The hollow molded body molding die 1 according to the present embodiment includes an outer molding die 80 (see FIG. 4) for molding the outer shape of the hollow molded body 100 and a hollow portion molding die 10 for molding the hollow portion 105 of the hollow molded body 100. And have. Since the hollow portion molding die 10 forms the hollow portion 105 from the inside of the hollow molded body 100, when the hollow molded body 100 is molded by the hollow molded body molding die 1, as shown in FIG. 5, the hollow portion molding die 10 is formed. Is in a state of being inside the hollow molded body 100. Further, among the plurality of holes 102 formed in the hollow molded body 100, some of the holes 102 are the coupling member 20 and the hollow portion, which will be described later, which the hollow portion molding mold 10 has after molding the hollow molded body 100. It is formed as a take-out portion 101 for taking out the molding member 30 from the hollow portion 105.
　図６は、図５に示す中空部成形型１０の斜視図である。中空成形体１００は、略球体状の形状で形成されているため、中空成形体１００の内側部分である中空部１０５（図１参照）も、全体として略球体状の形状で形成されている。このため、中空部１０５を成形する中空部成形型１０も、表面の形状が略球形の形状で形成されており、中空部成形型１０は、略球形に形成される表面が、中空部１０５を成形する内側成形面１１になっている。中空部成形型１０は、略球形に形成される内側成形面１１によって、中空成形体１００の球体状の中空部１０５を成形することが可能になっている。 FIG. 6 is a perspective view of the hollow portion molding mold 10 shown in FIG. Since the hollow molded body 100 is formed in a substantially spherical shape, the hollow portion 105 (see FIG. 1), which is an inner portion of the hollow molded body 100, is also formed in a substantially spherical shape as a whole. Therefore, the hollow portion molding die 10 for molding the hollow portion 105 also has a substantially spherical surface shape, and the hollow portion molding mold 10 has a substantially spherical surface having the hollow portion 105. It is an inner molding surface 11 to be molded. The hollow portion molding die 10 can form the spherical hollow portion 105 of the hollow molded body 100 by the inner molding surface 11 formed into a substantially spherical shape.
　中空部成形型１０は、成形装置７０（図２参照）での中空成形体１００の成形時に、外側成形型８０の内側で中空部成形型１０を保持するための部材である支持部材２２を有している。支持部材２２は、内側成形面１１の形状である球形の中心を中心として対称となる２箇所に配置されており、支持部材２２は、球形の軸心に沿った棒状の形状で形成されている。即ち、２箇所の支持部材２２は、中空部成形型１０における互いに反対側に配置され、互いに反対方向に向かって突出している。 The hollow portion molding die 10 has a support member 22 which is a member for holding the hollow portion molding die 10 inside the outer molding die 80 when the hollow molded body 100 is molded by the molding apparatus 70 (see FIG. 2). doing. The support member 22 is arranged at two symmetrical positions about the center of the spherical surface which is the shape of the inner molded surface 11, and the support member 22 is formed in a rod shape along the spherical axis. .. That is, the two support members 22 are arranged on opposite sides of the hollow portion molding die 10 and project in opposite directions.
　図７は、中空部成形型１０が有する一部の中空部成形部材３０を取り除いた状態を示す説明図である。中空部成形型１０は、中空成形体１００の中空部１０５の一部をそれぞれ成形する複数の中空部成形部材３０と、複数の中空部成形部材３０が着脱自在に結合する結合部材２０と、を備えている。このうち、結合部材２０は２つが備えられると共に、２つの結合部材２０は、中空成形体１００の中空部１０５の中心を中心とする対称位置に配置されており、２箇所の支持部材２２は、２つの結合部材２０に１つずつ配置されている。これにより、２箇所の支持部材２２は、中空部１０５を成形する内側成形面１１の形状である、球形の中心を中心とする対称位置に配置される。 FIG. 7 is an explanatory view showing a state in which a part of the hollow portion molding member 30 included in the hollow portion molding mold 10 is removed. The hollow portion molding die 10 comprises a plurality of hollow portion molding members 30 for molding a part of the hollow portion 105 of the hollow molded body 100, and a coupling member 20 to which the plurality of hollow portion molding members 30 are detachably bonded. I have. Of these, two coupling members 20 are provided, and the two coupling members 20 are arranged at symmetrical positions centered on the center of the hollow portion 105 of the hollow molded body 100, and the two support members 22 are arranged at symmetrical positions. One is arranged on each of the two connecting members 20. As a result, the two support members 22 are arranged at symmetrical positions centered on the center of the spherical surface, which is the shape of the inner molding surface 11 for molding the hollow portion 105.
　また、２つの結合部材２０は、結合部材２０同士の間に亘って配置される連結部材２３により連結されている。連結部材２３は、球体状に形成される中空部成形型１０の内側を通り、結合部材２０における、球体の内側部分同士を連結している。 Further, the two connecting members 20 are connected by a connecting member 23 arranged between the connecting members 20. The connecting member 23 passes through the inside of the hollow portion molding mold 10 formed in a spherical shape, and connects the inner portions of the spheres in the connecting member 20.
　図８は、結合部材２０に対する中空部成形部材３０の結合についての説明図である。図９は、中空部成形部材３０の斜視図である。図８は、結合部材２０と中空部成形部材３０との結合状態について理解し易くなるように、複数の中空部成形部材３０のうち、２つの中空部成形部材３０のみが結合部材２０に結合している状態を示している。中空部成形部材３０は、複数の中空部成形部材３０が組み合わされることにより中空部１０５を成形可能な形状に形成されている。本実施形態では、中空部成形型１０が有する複数の中空部成形部材３０は、球体状に形成される中空部成形型１０を、２箇所の結合部材２０の位置を２つの極点とする場合における、いわゆる舟型多円錐図法で複数の舟型を形成した際における１つ１つの舟型を、展開せずに球体の形状を維持した形状で形成されている。このため、中空部成形部材３０は、球体の極点に位置する２つの結合部材２０の間に亘って配置され、球の外側に向かって凸となる方向に湾曲して形成されている。 FIG. 8 is an explanatory diagram of the coupling of the hollow portion molding member 30 to the coupling member 20. FIG. 9 is a perspective view of the hollow portion molding member 30. FIG. 8 shows that, of the plurality of hollow portion molding members 30, only two hollow portion molding members 30 are coupled to the coupling member 20 so that the bonding state between the coupling member 20 and the hollow portion molding member 30 can be easily understood. Indicates the state of The hollow portion forming member 30 is formed in a shape capable of forming the hollow portion 105 by combining a plurality of hollow portion forming members 30. In the present embodiment, the plurality of hollow portion molding members 30 included in the hollow portion molding mold 10 are in the case where the hollow portion molding mold 10 formed in a spherical shape has the positions of the two connecting members 20 as two poles. , Each boat shape when a plurality of boat shapes are formed by the so-called boat shape polyconic projection is formed in a shape that maintains the shape of a sphere without unfolding. Therefore, the hollow portion forming member 30 is arranged between the two connecting members 20 located at the poles of the sphere, and is formed so as to be curved in a direction convex toward the outside of the sphere.
　中空部成形部材３０は、湾曲して凸となる側の表面が、中空成形体１００の中空部１０５を成形する内側成形面１１として形成されている。また、中空部成形部材３０は、内側成形面１１のみでなく、中空部成形型１０の内面に相当する側の面も、球の外側に向かって凸となる方向に湾曲して形成されている。また、中空部成形部材３０は、舟型多円錐図法における１つ１つの舟型状に形成されるため、換言すると、中空部成形部材３０は、中空部成形型１０における中空成形体１００の中空部１０５を成形する部分を、２つの結合部材２０を結ぶ直線を中心とする周方向において複数に分割し、この１つ１つの分割した部分により形成される形態になっている。 The surface of the hollow portion molding member 30 on the curved and convex side is formed as an inner molding surface 11 for molding the hollow portion 105 of the hollow molded body 100. Further, the hollow portion forming member 30 is formed so that not only the inner forming surface 11 but also the surface on the side corresponding to the inner surface of the hollow portion forming mold 10 is curved in the direction of being convex toward the outside of the sphere. .. Further, since the hollow portion molding member 30 is formed in the shape of each boat in the boat-shaped polyconic projection, in other words, the hollow portion molding member 30 is the hollow of the hollow molded body 100 in the hollow portion molding mold 10. The portion for forming the portion 105 is divided into a plurality of portions in the circumferential direction centered on the straight line connecting the two connecting members 20, and the portion is formed by each of the divided portions.
　２つの結合部材２０の間に亘って配置される中空部成形部材３０は、２つの結合部材２０に両端が着脱自在に結合される。詳しくは、中空部成形部材３０の両端には、結合部材２０に対して着脱自在に結合することができる結合溝３１が形成されている。結合溝３１は、溝の深さ方向が、２つの結合部材２０を結ぶ直線の方向と略平行な方向になり、溝の幅方向が、２つの結合部材２０を結ぶ直線を中心とする円の径方向になる向きで形成されている。 Both ends of the hollow portion forming member 30 arranged between the two connecting members 20 are detachably joined to the two connecting members 20. Specifically, coupling grooves 31 that can be detachably joined to the coupling member 20 are formed at both ends of the hollow portion forming member 30. In the connecting groove 31, the depth direction of the groove is substantially parallel to the direction of the straight line connecting the two connecting members 20, and the width direction of the groove is a circle centered on the straight line connecting the two connecting members 20. It is formed in the radial direction.
　連結部材２３により連結されている２つの結合部材２０は、着脱自在に連結される着脱部２４とベース部２５とを構成している。即ち、２つの結合部材２０のうち、一方の結合部材２０は、ベース部２５に設けられており、他方の結合部材２０は、ベース部２５に対して着脱可能な着脱部２４に設けられている。連結部材２３は、ベース部２５に設けられており、着脱部２４は、連結部材２３に対して着脱することにより、ベース部２５に対して着脱することが可能になっている。 The two connecting members 20 connected by the connecting member 23 constitute a detachable portion 24 and a base portion 25 that are detachably connected. That is, of the two coupling members 20, one coupling member 20 is provided on the base portion 25, and the other coupling member 20 is provided on the attachment / detachment portion 24 that is removable from the base portion 25. .. The connecting member 23 is provided on the base portion 25, and the attachment / detachment portion 24 can be attached / detached to / from the base portion 25 by attaching / detaching to / from the connecting member 23.
　図１０は、ベース部２５の斜視図である。ベース部２５は、結合部材２０と、支持部材２２と、連結部材２３を有している。支持部材２２と連結部材２３とは、結合部材２０に対して互いに反対側に配置されており、互いに反対方向に延びている。このうち、連結部材２３における結合部材２０に接続されている側の端部の反対側の端部、即ち、連結部材２３の先端部分には、ベース部２５に対する着脱部２４の着脱に用いるネジ部２７が形成されている。 FIG. 10 is a perspective view of the base portion 25. The base portion 25 has a connecting member 20, a supporting member 22, and a connecting member 23. The support member 22 and the connecting member 23 are arranged on opposite sides to the connecting member 20, and extend in opposite directions. Of these, the end on the opposite side of the end of the connecting member 23 that is connected to the connecting member 20, that is, the tip of the connecting member 23, has a screw portion used for attaching and detaching the attachment / detachment portion 24 to / from the base portion 25. 27 is formed.
　また、連結部材２３は、丸棒状の形状で形成されており、結合部材２０に接続されている側の端部と、ネジ部２７が形成されている側の端部との間の部分が湾曲している。連結部材２３における湾曲している部分は、連結部材２３の長さ方向における大部分に及んでおり、このため、連結部材２３は、結合部材２０に接続されている側の端部と、ネジ部２７が形成されている側の端部とを結ぶ直線に対して、大部分が離間する形状で形成されている。 Further, the connecting member 23 is formed in a round bar shape, and the portion between the end portion on the side connected to the connecting member 20 and the end portion on the side on which the screw portion 27 is formed is curved. doing. The curved portion of the connecting member 23 covers most of the connecting member 23 in the length direction. Therefore, the connecting member 23 has an end portion on the side connected to the connecting member 20 and a screw portion. It is formed in a shape that is mostly separated from the straight line connecting the end on the side where 27 is formed.
　また、結合部材２０には、中空部成形部材３０の結合溝３１と結合する結合凸部２１が形成されている。結合凸部２１は、結合凸部２１における連結部材２３が配置される側の面に形成されており、連結部材２３が延びる側に突出し、ベース部２５に着脱部２４を取り付けた状態における２つの結合部材２０を結ぶ直線を中心とする１周に亘って連続して凸となる形状で形成されている。 Further, the coupling member 20 is formed with a coupling convex portion 21 that couples with the coupling groove 31 of the hollow portion molding member 30. The coupling convex portion 21 is formed on the surface of the coupling convex portion 21 on the side where the connecting member 23 is arranged, protrudes to the extending side of the connecting member 23, and has two attachment / detachment portions 24 attached to the base portion 25. It is formed in a shape that is continuously convex over one circumference centered on a straight line connecting the connecting members 20.
　図１１は、着脱部２４の斜視図である。着脱部２４は、結合部材２０と支持部材２２とを有している。着脱部２４が有する結合部材２０には、ベース部２５が有する結合部材２０と同様の形態で結合凸部２１が形成されている。即ち、着脱部２４に形成される結合凸部２１は、結合部材２０における支持部材２２が配置されている側の面の反対側の面に形成されており、支持部材２２が配置されている側の反対方向に向かって突出して形成されている。 FIG. 11 is a perspective view of the detachable portion 24. The attachment / detachment portion 24 has a coupling member 20 and a support member 22. The coupling member 20 included in the attachment / detachment portion 24 is formed with a coupling convex portion 21 in the same form as the coupling member 20 included in the base portion 25. That is, the coupling convex portion 21 formed on the attachment / detachment portion 24 is formed on the surface of the coupling member 20 opposite to the surface on which the support member 22 is arranged, and the side on which the support member 22 is arranged. It is formed so as to project in the opposite direction of.
　また、着脱部２４には、結合部材２０における支持部材２２が配置されている側の反対側の面に、ベース部２５の連結部材２３に形成されるネジ部２７と螺合するネジ孔２６が形成されている。着脱部２４は、連結部材２３のネジ部２７と着脱部２４のネジ孔２６とを螺合させることにより、ベース部２５に取り付けることが可能になっている。 Further, the detachable portion 24 has a screw hole 26 screwed with a screw portion 27 formed in the connecting member 23 of the base portion 25 on the surface of the connecting member 20 on the opposite side of the connecting member 20 on the side where the support member 22 is arranged. It is formed. The attachment / detachment portion 24 can be attached to the base portion 25 by screwing the screw portion 27 of the connecting member 23 and the screw hole 26 of the attachment / detachment portion 24.
　次に、本実施形態に係る中空成形体１００の製造方法について説明する。図１２は、実施形態に係る中空成形体１００の製造方法の手順を示すフロー図である。中空成形体１００を製造する際には、まず、中空成形体１００の中空部１０５を成形する複数の中空部成形部材３０を、結合部材２０に結合する（ステップＳＴ１１）。中空部成形部材３０を結合部材２０に結合する際には、中空部成形部材３０の端部に形成される結合溝３１を、結合部材２０に形成される結合凸部２１に嵌め込むことにより結合する。また、中空部成形部材３０を結合部材２０に結合する際には、ベース部２５から着脱部２４を取り外した状態、または、ベース部２５のネジ部２７に着脱部２４のネジ孔２６を少しだけ螺合させ、着脱部２４をベース部２５に対して緩めた取り付けた状態で行う。 Next, a method for manufacturing the hollow molded body 100 according to the present embodiment will be described. FIG. 12 is a flow chart showing a procedure of a method for manufacturing the hollow molded body 100 according to the embodiment. When manufacturing the hollow molded body 100, first, a plurality of hollow portion molding members 30 for molding the hollow portion 105 of the hollow molded body 100 are joined to the coupling member 20 (step ST11). When the hollow portion molding member 30 is coupled to the coupling member 20, the coupling groove 31 formed at the end of the hollow portion molding member 30 is fitted into the coupling convex portion 21 formed in the coupling member 20 to be coupled. To do. Further, when the hollow portion molding member 30 is coupled to the coupling member 20, the attachment / detachment portion 24 is removed from the base portion 25, or the screw portion 27 of the base portion 25 is provided with a few screw holes 26 of the attachment / detachment portion 24. It is screwed, and the attachment / detachment portion 24 is loosely attached to the base portion 25.
　つまり、中空部成形部材３０を結合部材２０に結合する際には、両端の結合溝３１を、２つの結合部材２０の結合凸部２１にそれぞれ結合させる。このため、例えば、ベース部２５から着脱部２４を取り外した状態で中空部成形部材３０を結合する際には、全ての中空部成形部材３０の一端側の結合溝３１を、ベース部２５側の結合部材２０の結合凸部２１に結合させた後、ベース部２５のネジ部２７に着脱部２４のネジ孔２６を螺合させ、着脱部２４をベース部２５に取り付ける。その際に、各中空部成形部材３０の他端側の結合溝３１を、着脱部２４側の結合部材２０の結合凸部２１に結合させる。これにより、各中空部成形部材３０の両端の結合溝３１を、２つの結合部材２０の結合凸部２１にそれぞれ結合させる。 That is, when the hollow portion forming member 30 is coupled to the coupling member 20, the coupling grooves 31 at both ends are coupled to the coupling convex portions 21 of the two coupling members 20, respectively. Therefore, for example, when the hollow portion molding member 30 is joined with the attachment / detachment portion 24 removed from the base portion 25, the coupling groove 31 on one end side of all the hollow portion molding members 30 is formed on the base portion 25 side. After being coupled to the coupling convex portion 21 of the coupling member 20, the screw hole 26 of the attachment / detachment portion 24 is screwed into the screw portion 27 of the base portion 25, and the attachment / detachment portion 24 is attached to the base portion 25. At that time, the coupling groove 31 on the other end side of each hollow portion molding member 30 is coupled to the coupling convex portion 21 of the coupling member 20 on the attachment / detachment portion 24 side. As a result, the coupling grooves 31 at both ends of each hollow portion forming member 30 are coupled to the coupling convex portions 21 of the two coupling members 20, respectively.
　また、ベース部２５のネジ部２７に着脱部２４のネジ孔２６を少しだけ螺合させた状態で中空部成形部材３０を結合部材２０に結合する際には、中空部成形部材３０を、２つの結合部材２０同士の間に斜めにして入り込ませたり、中空部成形部材３０を僅か撓ませたりしながら、中空部成形部材３０の両端の結合溝３１を、２つの結合部材２０の結合凸部２１に浅く結合させる。このようにして、全ての中空部成形部材３０の結合溝３１を、２つの結合部材２０の結合凸部２１に浅く結合させたら、ベース部２５のネジ部２７に着脱部２４のネジ孔２６を規定量まで螺合させる。これにより、各中空部成形部材３０の両端の結合溝３１を、２つの結合部材２０の結合凸部２１に対して、規定の深さで結合させる。 Further, when the hollow portion molding member 30 is coupled to the coupling member 20 in a state where the screw hole 26 of the attachment / detachment portion 24 is slightly screwed into the screw portion 27 of the base portion 25, the hollow portion molding member 30 is divided into two. The coupling grooves 31 at both ends of the hollow portion molding member 30 are formed into the coupling protrusions of the two coupling members 20 while being slantedly inserted between the two coupling members 20 or slightly bending the hollow portion molding member 30. It is shallowly combined with 21. In this way, when the coupling grooves 31 of all the hollow portion molding members 30 are shallowly coupled to the coupling convex portions 21 of the two coupling members 20, the screw holes 26 of the attachment / detachment portion 24 are formed in the screw portions 27 of the base portion 25. Screw up to the specified amount. As a result, the coupling grooves 31 at both ends of each hollow portion forming member 30 are coupled to the coupling convex portions 21 of the two coupling members 20 at a specified depth.
　また、本実施形態において成形する中空成形体１００は、中空部１０５に内部部材１１０が入り込んだものであるため、中空部成形部材３０と結合部材２０とを結合する際には、内側に内部部材１１０を入り込ませて結合する。図１３は、中空部成形型１０の内側に内部部材１１０を入り込ませた状態を示す説明図である。中空部成形型１０は、略球体状の形状で形成されており、中空部成形部材３０は、中空部成形型１０の球の外側に向かって凸となる方向に湾曲しているため、複数の中空部成形部材３０が組み合わされることにより形成される中空部成形型１０は、内側に空間である内側空間１５が形成される。つまり、中空成形体１００の成形を行う際に結合する中空部成形部材３０と結合部材２０とは、中空部成形型１０の内側に内側空間１５が形成される形態で結合する。本実施形態では、中空部１０５に内部部材１１０が入り込んだ状態の中空成形体１００を成形するため、中空成形体１００の中空部１０５の成形に用いる中空部成形型１０を形成する中空部成形部材３０と結合部材２０とは、内側空間１５に内部部材１１０を入り込ませて結合する。 Further, since the hollow molded body 100 to be molded in the present embodiment has the internal member 110 inserted into the hollow portion 105, when the hollow portion molding member 30 and the connecting member 20 are joined, the internal member is inside. Insert 110 and combine. FIG. 13 is an explanatory view showing a state in which the internal member 110 is inserted inside the hollow portion molding die 10. The hollow portion molding mold 10 is formed in a substantially spherical shape, and the hollow portion molding member 30 is curved in a direction that is convex toward the outside of the sphere of the hollow portion molding mold 10, so that a plurality of hollow portion molding members 30 are formed. In the hollow portion molding mold 10 formed by combining the hollow portion molding members 30, an inner space 15 which is a space is formed inside. That is, the hollow portion molding member 30 and the coupling member 20 that are coupled when the hollow molded body 100 is molded are coupled in a form in which the inner space 15 is formed inside the hollow portion molding mold 10. In the present embodiment, in order to mold the hollow molded body 100 in which the internal member 110 is inserted into the hollow portion 105, the hollow portion molding member for forming the hollow portion molding mold 10 used for molding the hollow portion 105 of the hollow molded body 100. The 30 and the connecting member 20 are joined by inserting the internal member 110 into the inner space 15.
　内側空間１５に入り込ませる内部部材１１０は、別の製造工程で製造したものを用いる。即ち、内部部材１１０は、別の製造工程で予め製造しておき、中空部成形部材３０と結合部材２０とを結合することにより中空部成形型１０を形成する際に、予め製造した内部部材１１０を内側空間１５に入り込ませる。その際に、内側空間１５に配置されて２つの結合部材２０を連結する連結部材２３は、湾曲して形成されているため、内部部材１１０が球形である場合、内部部材１１０は、直径が内側空間１５の半径よりも大きなものを内側空間１５に入り込ませることができる。 The internal member 110 to be inserted into the inner space 15 is manufactured by another manufacturing process. That is, the internal member 110 is manufactured in advance in another manufacturing process, and when the hollow portion molding member 30 and the coupling member 20 are combined to form the hollow portion molding mold 10, the internal member 110 manufactured in advance is manufactured. Is inserted into the inner space 15. At that time, since the connecting member 23 arranged in the inner space 15 and connecting the two connecting members 20 is formed in a curved shape, when the inner member 110 is spherical, the inner member 110 has an inner diameter. Anything larger than the radius of the space 15 can enter the inner space 15.
　中空部成形部材３０を結合部材２０に結合する際に結合溝３１を嵌め込む結合凸部２１は、２つの結合部材２０を結ぶ直線を中心とする１周に亘って連続して凸となる形状で形成されている。このため、中空部成形部材３０を結合部材２０に結合する際には、複数の中空部成形部材３０は、２つの結合部材２０を結ぶ直線を中心とする１周に亘って結合する。換言すると、中空部成形部材３０は、結合部材２０を中心とする周方向の１周に亘って複数の中空部成形部材３０が結合部材２０に結合する。 The coupling convex portion 21 into which the coupling groove 31 is fitted when the hollow portion molding member 30 is coupled to the coupling member 20 has a shape that is continuously convex over one circumference centered on a straight line connecting the two coupling members 20. Is formed of. Therefore, when the hollow portion molding member 30 is coupled to the coupling member 20, the plurality of hollow portion molding members 30 are coupled over one circumference centered on a straight line connecting the two coupling members 20. In other words, in the hollow portion forming member 30, a plurality of hollow portion forming members 30 are coupled to the coupling member 20 over one circumference in the circumferential direction centered on the coupling member 20.
　複数の中空部成形部材３０は、結合部材２０を中心とする周方向の１周に亘って結合部材２０に結合することにより、隣り合う中空部成形部材３０同士の隙間がほぼ無い状態で結合部材２０に結合し、結合した結合部材２０と中空部成形部材３０との全体的な形状が、略球体状の形状になる。中空部成形部材３０と結合部材２０とは、このように中空部成形部材３０が結合部材２０に結合して複数の中空部成形部材３０と結合部材２０とが組み合わされることにより、中空成形体１００の中空部１０５を成形する中空部成形型１０として形成される（図６参照）。これにより、内側空間１５に内部部材１１０が入り込んだ中空部成形型１０を形成する。 The plurality of hollow portion molding members 30 are coupled to the coupling member 20 over one circumference in the circumferential direction centered on the coupling member 20, so that there is almost no gap between the adjacent hollow portion molding members 30. The overall shape of the connecting member 20 and the hollow portion forming member 30 which are bonded to the 20 and joined to the 20 is substantially spherical. The hollow portion molding member 30 and the coupling member 20 are formed by combining the hollow portion molding member 30 with the coupling member 20 and the plurality of hollow portion molding members 30 and the coupling member 20 in this way. It is formed as a hollow portion molding die 10 for molding the hollow portion 105 of the above (see FIG. 6). As a result, the hollow portion molding die 10 in which the internal member 110 is inserted into the inner space 15 is formed.
　次に、中空部成形部材３０と結合部材２０とが結合された中空部成形型１０を外側成形型８０の内側に入れ、中空部成形型１０と外側成形型８０とで中空成形体１００を成形する（ステップＳＴ１２）。つまり、内側空間１５に内部部材１１０を入り込ませた中空部成形型１０と外側成形型８０とで、中空成形体１００の成形を行う。中空部成形型１０と外側成形型８０とで中空成形体１００の成形を行う際には、まず、中空部成形型１０を、成形装置７０に備えられる外側成形型８０の上部成形型８１、下部成形型８２、側部成形型８３が互いに離間した状態で、上部成形型８１と下部成形型８２と側部成形型８３の間に配置する。これにより、中空部成形型１０の内側成形面１１と外側成形型８０の外側成形面８５とが対向した状態にする。また、成形装置７０は、中空部成形型１０の支持部材２２を支持することにより、中空部成形型１０の内側成形面１１と外側成形型８０の外側成形面８５とが対向する状態を維持する。 Next, the hollow portion molding die 10 in which the hollow portion molding member 30 and the coupling member 20 are bonded is placed inside the outer molding die 80, and the hollow molded body 100 is molded by the hollow portion molding die 10 and the outer molding die 80. (Step ST12). That is, the hollow molded body 100 is molded by the hollow portion molding die 10 in which the inner member 110 is inserted into the inner space 15 and the outer molding die 80. When molding the hollow molded body 100 between the hollow portion molding die 10 and the outer molding die 80, first, the hollow portion molding die 10 is placed on the upper molding die 81 and the lower portion of the outer molding die 80 provided in the molding apparatus 70. The mold 82 and the side mold 83 are arranged between the upper mold 81, the lower mold 82, and the side mold 83 in a state of being separated from each other. As a result, the inner molding surface 11 of the hollow portion molding mold 10 and the outer molding surface 85 of the outer molding mold 80 are brought into a state of facing each other. Further, the molding apparatus 70 maintains a state in which the inner molding surface 11 of the hollow portion molding mold 10 and the outer molding surface 85 of the outer molding mold 80 face each other by supporting the support member 22 of the hollow portion molding mold 10. ..
　成形装置７０は、中空部成形型１０が、上部成形型８１と下部成形型８２と側部成形型８３の間に位置する状態で外側成形型８０を移動させ、外側成形型８０を中空部成形型１０に接近させる。これにより、外側成形型８０の外側成形面８５は、中空部成形型１０の内側成形面１１に接近し、外側成形型８０の外側成形面８５と中空部成形型１０の内側成形面１１とは、中空成形体１００を成形することのできる距離になる。また、その際に、外側成形面８５に形成される凸部８６は、中空部成形型１０の内側成形面１１に接触する。 In the molding apparatus 70, the outer molding die 80 is moved while the hollow portion molding die 10 is located between the upper molding die 81, the lower molding die 82, and the side molding die 83, and the outer molding die 80 is formed into the hollow portion. Bring it closer to the mold 10. As a result, the outer molding surface 85 of the outer molding mold 80 approaches the inner molding surface 11 of the hollow portion molding mold 10, and the outer molding surface 85 of the outer molding mold 80 and the inner molding surface 11 of the hollow portion molding mold 10 are separated from each other. , The distance is such that the hollow molded body 100 can be molded. At that time, the convex portion 86 formed on the outer molding surface 85 comes into contact with the inner molding surface 11 of the hollow portion molding mold 10.
　また、外側成形型８０の外側成形面８５に形成される複数の凸部８６のうち、一部の凸部８６は、中空部成形型１０の支持部材２２を囲って形成されている。中空部成形型１０の支持部材２２を囲って形成される凸部８６は、直径が中空部成形型１０の結合部材２０よりも大きくなっており、中空成形体１００において、この凸部８６により形成される孔部１０２が、結合部材２０や中空部成形部材３０を取り出す取出し部１０１になる。 Further, among the plurality of convex portions 86 formed on the outer molding surface 85 of the outer molding mold 80, some of the convex portions 86 are formed so as to surround the support member 22 of the hollow portion molding mold 10. The convex portion 86 formed around the support member 22 of the hollow portion molding die 10 has a diameter larger than that of the connecting member 20 of the hollow portion molding die 10, and is formed by the convex portion 86 in the hollow molded body 100. The hole 102 to be formed becomes a take-out portion 101 from which the coupling member 20 and the hollow portion molding member 30 are taken out.
　外側成形型８０の外側成形面８５と中空部成形型１０の内側成形面１１とが、中空成形体１００を成形することのできる距離になったら、成形装置７０は、外側成形面８５と内側成形面１１との間の空間に樹脂射出経路７６から合成樹脂を射出する。樹脂射出経路７６から射出された合成樹脂は、射出された後、外側成形面８５と内側成形面１１との間の空間で固化し、固化した合成樹脂は、中空成形体１００として成形される。 When the outer molding surface 85 of the outer molding die 80 and the inner molding surface 11 of the hollow portion molding die 10 are at a distance capable of molding the hollow molded body 100, the molding apparatus 70 performs the outer molding surface 85 and the inner molding. Synthetic resin is injected from the resin injection path 76 into the space between the surface 11 and the surface 11. The synthetic resin injected from the resin injection path 76 is injected and then solidified in the space between the outer molded surface 85 and the inner molded surface 11, and the solidified synthetic resin is molded as the hollow molded body 100.
　その際に、外側成形型８０の外側成形面８５に形成される凸部８６の部分には、合成樹脂は行き渡らないため、凸部８６が位置する部分は、成形後の中空成形体１００においては孔部１０２として形成される。また、中空成形体１００に形成される複数の孔部１０２のうち、一部の孔部１０２は、取出し部１０１として形成される。取出し部１０１は、結合部材２０の大きさや、中空部成形部材３０の延在方向に見た場合の中空部成形部材３０の断面形状の大きさと比較して、開口形状の大きさが大きくなっている。これにより、結合部材２０や中空部成形部材３０を取り出す取出し部１０１を有する中空成形体１００を、中空部成形型１０と外側成形型８０とで成形する。 At that time, since the synthetic resin does not spread to the portion of the convex portion 86 formed on the outer molding surface 85 of the outer molding mold 80, the portion where the convex portion 86 is located is formed in the hollow molded body 100 after molding. It is formed as a hole 102. Further, among the plurality of hole portions 102 formed in the hollow molded body 100, some of the hole portions 102 are formed as the take-out portion 101. The size of the opening of the take-out portion 101 is larger than the size of the coupling member 20 and the size of the cross-sectional shape of the hollow portion molding member 30 when viewed in the extending direction of the hollow portion molding member 30. There is. As a result, the hollow molded body 100 having the take-out portion 101 from which the connecting member 20 and the hollow portion molding member 30 are taken out is molded by the hollow portion molding die 10 and the outer molding die 80.
　次に、結合部材２０を中空部成形部材３０から取り外し、結合部材２０を中空成形体１００に形成される取出し部１０１から取り出す（ステップＳＴ１３）。即ち、中空部成形型１０と外側成形型８０とで中空成形体１００の成形を行ったら、まず、成形装置７０が有する外側成形型８０を移動させて外側成形型８０を中空部成形型１０から離間させる。これにより、成形された中空成形体１００と、中空成形体１００の中空部１０５に入り込んでいる中空部成形型１０とが露出するため、中空成形体１００と中空部成形型１０とを、成形装置７０から一体で取り出す（図５参照）。 Next, the coupling member 20 is removed from the hollow portion molding member 30, and the coupling member 20 is taken out from the take-out portion 101 formed in the hollow molded body 100 (step ST13). That is, when the hollow molded body 100 is molded by the hollow portion molding die 10 and the outer molding die 80, first, the outer molding die 80 of the molding apparatus 70 is moved to move the outer molding die 80 from the hollow portion molding die 10. Separate. As a result, the molded hollow molded body 100 and the hollow portion molding die 10 that has entered the hollow portion 105 of the hollow molded body 100 are exposed. Therefore, the hollow molded body 100 and the hollow portion molding die 10 are formed by a molding apparatus. Take out integrally from 70 (see FIG. 5).
　図１４は、着脱部２４をベース部２５から取り外した状態を示す説明図である。中空成形体１００と中空部成形型１０とを成形装置７０から取り出したら、着脱部２４をベース部２５から取り外す。つまり、着脱部２４は、着脱部２４に形成されるネジ孔２６と、ベース部２５に形成されるネジ部２７とが螺合することによりベース部２５に取り付けられているため、ネジ孔２６とネジ部２７との螺合を取り外すことにより、着脱部２４をベース部２５から取り外す。 FIG. 14 is an explanatory view showing a state in which the detachable portion 24 is removed from the base portion 25. After the hollow molded body 100 and the hollow portion molding die 10 are taken out from the molding apparatus 70, the detachable portion 24 is removed from the base portion 25. That is, since the attachment / detachment portion 24 is attached to the base portion 25 by screwing the screw hole 26 formed in the attachment / detachment portion 24 and the screw portion 27 formed in the base portion 25, the attachment / detachment portion 24 is attached to the base portion 25. By removing the screw with the screw portion 27, the detachable portion 24 is removed from the base portion 25.
　着脱部２４は、結合部材２０有しているため、着脱部２４をベース部２５から取り外すことにより、着脱部２４が有する結合部材２０を、当該結合部材２０に結合している中空部成形部材３０から取り外すことができる。また、着脱部２４をベース部２５から取り外す際には、着脱部２４が有する結合部材２０は、中空成形体１００に形成される取出し部１０１から取り出す。これにより、結合部材２０を中空部成形部材３０から取り外し、結合部材２０を中空成形体１００に形成される取出し部１０１から取り出す。 Since the attachment / detachment portion 24 has the connecting member 20, the hollow portion forming member 30 that connects the joining member 20 of the attachment / detachment portion 24 to the joining member 20 by removing the attachment / detachment portion 24 from the base portion 25. Can be removed from. Further, when the detachable portion 24 is removed from the base portion 25, the connecting member 20 included in the detachable portion 24 is taken out from the take-out portion 101 formed in the hollow molded body 100. As a result, the coupling member 20 is removed from the hollow portion molding member 30, and the coupling member 20 is taken out from the take-out portion 101 formed in the hollow molded body 100.
　次に、中空部成形部材３０を、中空成形体１００に形成される取出し部１０１から取り出す（ステップＳＴ１４）。図１５は、中空部成形部材３０を取り出した状態を示す説明図である。図１６は、複数の中空部成形部材３０を取り出した状態を示す説明図である。着脱部２４が有する結合部材２０を取出し部１０１から取り出すと、中空成形体１００の中空部１０５に位置する中空部成形部材３０は、取出し部１０１に対してむき出しになった状態になる。これにより、中空部成形部材３０は、中空成形体１００に形成される取出し部１０１から取り出すことが可能になる。また、中空部成形部材３０は、中空部成形部材３０の延在方向に見た場合における断面形状が、取出し部１０１の開口形状よりも小さくなっているため、取出し部１０１から取り出すことができる。従って、中空部成形部材３０は、結合部材２０を取出し部１０１から取り出すことにより、取出し部１０１に対してむき出しになった中空部成形部材３０を、結合部材２０と同様に取出し部１０１から取り出す。 Next, the hollow portion molding member 30 is taken out from the take-out portion 101 formed in the hollow molded body 100 (step ST14). FIG. 15 is an explanatory view showing a state in which the hollow portion molding member 30 is taken out. FIG. 16 is an explanatory view showing a state in which a plurality of hollow portion forming members 30 are taken out. When the coupling member 20 included in the attachment / detachment portion 24 is taken out from the take-out portion 101, the hollow portion molding member 30 located in the hollow portion 105 of the hollow molded body 100 is in a state of being exposed to the take-out portion 101. As a result, the hollow portion molding member 30 can be taken out from the take-out portion 101 formed in the hollow molded body 100. Further, since the cross-sectional shape of the hollow portion forming member 30 when viewed in the extending direction of the hollow portion forming member 30 is smaller than the opening shape of the taking out portion 101, the hollow portion forming member 30 can be taken out from the taking out portion 101. Therefore, the hollow portion forming member 30 takes out the hollow portion forming member 30 exposed to the taking out portion 101 from the taking out portion 101 by taking out the connecting member 20 from the taking out portion 101 in the same manner as the connecting member 20.
　中空部成形部材３０は、中空成形体１００の中空部１０５に複数が位置しているため、複数の中空部成形部材３０を取出し部１０１から順に取り出す。ここで、中空部成形型１０の内側空間１５には、内部部材１１０を入り込んでいるが、内部部材１１０は、取出し部１０１を含む中空成形体１００の孔部１０２の大きさよりも大きくなっている。このため、中空部成形部材３０を取出し部１０１から取り出す際には、内部部材１１０を中空成形体１００の中空部１０５に残したまま、複数の中空部成形部材３０を順に取り出す（図１６参照）。 Since a plurality of hollow portion forming members 30 are located in the hollow portion 105 of the hollow molded body 100, the plurality of hollow portion forming members 30 are taken out in order from the taking-out portion 101. Here, the internal member 110 is inserted into the inner space 15 of the hollow portion molding die 10, but the internal member 110 is larger than the size of the hole 102 of the hollow molded body 100 including the take-out portion 101. .. Therefore, when the hollow portion forming member 30 is taken out from the taking out portion 101, a plurality of hollow portion forming members 30 are taken out in order while leaving the internal member 110 in the hollow portion 105 of the hollow molded body 100 (see FIG. 16). ..
　なお、２つの結合部材２０のうち、ベース部２５が有する結合部材２０は、着脱部２４が有する結合部材２０を取出し部１０１から取り出した後、どの段階で取り出してもよい。即ち、ベース部２５は、着脱部２４を取り外した後、どの段階で取出し部１０１から取り出してもよい。例えば、ベース部２５は、着脱部２４を取り外した後、中空部成形部材３０を取出し部１０１から取り出す前に、ベース部２５側の取出し部１０１から取り出してもよく、全ての中空部成形部材３０を取出し部１０１から取り出した後に、ベース部２５をベース部２５側の取出し部１０１から取り出してもよい。または、複数の中空部成形部材３０を取出し部１０１から取り出している途中で、ベース部２５をベース部２５側の取出し部１０１から取り出してもよい。 Of the two coupling members 20, the coupling member 20 included in the base portion 25 may be removed at any stage after being removed from the coupling member 20 included in the attachment / detachment portion 24. That is, the base portion 25 may be taken out from the take-out portion 101 at any stage after the detachable portion 24 is removed. For example, the base portion 25 may be taken out from the take-out portion 101 on the base portion 25 side after the detachable portion 24 is removed and before the hollow portion molding member 30 is taken out from the take-out portion 101, and all the hollow portion molding members 30 may be taken out. After taking out from the take-out part 101, the base part 25 may be taken out from the take-out part 101 on the base part 25 side. Alternatively, the base portion 25 may be taken out from the take-out portion 101 on the base portion 25 side while the plurality of hollow portion forming members 30 are being taken out from the take-out portion 101.
　これらのように、中空成形体１００の中空部１０５を成形する中空部成形型１０は、結合部材２０及び中空部成形部材３０を中空成形体１００に形成される取出し部１０１から取り出すことにより、中空部成形型１０を中空部１０５から取り出すことができる（図１参照）。また、中空部成形型１０の内側空間１５に内部部材１１０を入り込ませた状態で中空成形体１００の成形を行い、中空成形体１００に形成される取出し部１０１から、結合部材２０と中空部成形部材３０とを取り出すことにより、中空部１０５に内部部材１１０が入り込んだ中空成形体１００を形成することができる。 As described above, the hollow portion molding die 10 for molding the hollow portion 105 of the hollow molded body 100 is hollow by taking out the connecting member 20 and the hollow portion molding member 30 from the take-out portion 101 formed in the hollow molded body 100. The part molding die 10 can be taken out from the hollow portion 105 (see FIG. 1). Further, the hollow molded body 100 is molded with the internal member 110 inserted into the inner space 15 of the hollow portion molding die 10, and the connecting member 20 and the hollow portion are molded from the take-out portion 101 formed in the hollow molded body 100. By taking out the member 30, it is possible to form the hollow molded body 100 in which the internal member 110 is inserted into the hollow portion 105.
　以上の実施形態に係る中空成形体成形型１は、中空成形体１００の中空部１０５を成形する中空部成形型１０が、中空部１０５の一部をそれぞれ成形する複数の中空部成形部材３０と、中空部成形部材３０が着脱自在に結合する結合部材２０とを備えている。これにより、取出し部１０１よりも大きな中空部１０５を中空部成形型１０によって成形した後、中空部成形型１０が有する結合部材２０と中空部成形部材３０とを取り外して、中空成形体１００の取出し部１０１からそれぞれ個別に取り出すことができる。この結果、中空部１０５を成形する成形型の取出し部１０１と比較して大きな中空部１０５を有する中空成形体１００を成形することができ、取出し部１０１よりも大きな中空部１０５を有する中空成形体１００を、一体成形によって成形することができる。 In the hollow molded body molding die 1 according to the above embodiment, the hollow portion molding die 10 for molding the hollow portion 105 of the hollow molded body 100 has a plurality of hollow portion molding members 30 for molding a part of the hollow portion 105. The hollow portion forming member 30 is provided with a connecting member 20 to which the hollow portion forming member 30 is detachably joined. As a result, after the hollow portion 105 larger than the take-out portion 101 is molded by the hollow portion molding die 10, the connecting member 20 and the hollow portion molding member 30 of the hollow portion molding die 10 are removed, and the hollow molded body 100 is taken out. Each can be individually taken out from the unit 101. As a result, the hollow molded body 100 having a larger hollow portion 105 as compared with the take-out portion 101 of the molding die for molding the hollow portion 105 can be molded, and the hollow molded body having the hollow portion 105 larger than the take-out portion 101 can be molded. 100 can be molded by integral molding.
　また、中空部成形部材３０は、結合部材２０を中心とする周方向の１周に亘って複数の中空部成形部材３０が結合部材２０に結合する。このため、結合部材２０と中空部成形部材３０が結合されることにより形成される中空部成形型１０は、結合部材２０の平面視方向における大きさを、結合部材２０を中心とする１周に亘って、結合部材２０の大きさよりも大きくすることができる。これにより、中空成形体１００の取出し部１０１の大きさを、結合部材２０が通る程度の大きさとした場合、中空部１０５を成形する中空部成形型１０の大きさを、取出し部１０１よりも大幅に大きくすることができる。この結果、より確実に、取出し部１０１と比較して大きな中空部１０５を有する中空成形体１００を成形することができる。 Further, in the hollow portion forming member 30, a plurality of hollow portion forming members 30 are coupled to the coupling member 20 over one circumference in the circumferential direction centered on the coupling member 20. Therefore, the hollow portion molding die 10 formed by connecting the coupling member 20 and the hollow portion molding member 30 has the size of the coupling member 20 in the plan view direction set to one circumference centered on the coupling member 20. It can be made larger than the size of the coupling member 20. As a result, when the size of the take-out portion 101 of the hollow molded body 100 is set to a size that allows the connecting member 20 to pass through, the size of the hollow portion molding mold 10 for molding the hollow portion 105 is larger than that of the take-out portion 101. Can be increased to. As a result, the hollow molded body 100 having a large hollow portion 105 as compared with the take-out portion 101 can be molded more reliably.
　また、結合部材２０は２つが備えられるため、複数の中空部成形部材３０を、２つの結合部材２０によってより確実に保持することができる。これにより、結合部材２０と中空部成形部材３０を結合することより形成される中空部成形型１０の形状を、より容易に維持することができる。また、２つの結合部材２０は、中空部１０５の中心を中心とする対称位置に配置されるため、２つの結合部材２０に複数の中空部成形部材３０を結合して中空部成形型１０の形状を維持する際に、複数の中空部成形部材３０の形状を揃えることができる。この結果、結合部材２０に複数の中空部成形部材３０を結合して形成する中空部成形型１０の製造性を高めることができる。また、複数の中空部成形部材３０の形状を同じ形状することにより、結合部材２０に複数の中空部成形部材３０を結合して中空部成形型１０を組み立てる際に、容易に組み立てることができる。この結果、中空部１０５を有する中空成形体１００の成形を、より容易に行うことができる。 Further, since the two connecting members 20 are provided, the plurality of hollow portion forming members 30 can be more reliably held by the two connecting members 20. As a result, the shape of the hollow portion molding mold 10 formed by connecting the coupling member 20 and the hollow portion molding member 30 can be more easily maintained. Further, since the two connecting members 20 are arranged symmetrically with respect to the center of the hollow portion 105, the shape of the hollow portion molding mold 10 is formed by connecting a plurality of hollow portion forming members 30 to the two connecting members 20. The shapes of the plurality of hollow portion forming members 30 can be made uniform when maintaining the above. As a result, the manufacturability of the hollow portion molding die 10 formed by connecting the plurality of hollow portion molding members 30 to the coupling member 20 can be improved. Further, by making the shape of the plurality of hollow portion molding members 30 the same, it can be easily assembled when the plurality of hollow portion molding members 30 are combined with the coupling member 20 to assemble the hollow portion molding mold 10. As a result, the hollow molded body 100 having the hollow portion 105 can be molded more easily.
　また、２つの結合部材２０は、結合部材２０同士の間に亘って配置される連結部材２３により連結されるため、２つの結合部材２０と複数の中空部成形部材３０とを結合することにより組み立てられる中空部成形型１０の組み立て状態を、より容易に維持することができる。これにより、中空部成形型１０と外側成形型８０とを用いて中空成形体１００の成形をする際に、中空部成形型１０の形状を崩すことなく、外側成形型８０の内側に配置して成形することができる。この結果、中空部１０５を有する中空成形体１００の成形を、より容易に行うことができる。 Further, since the two connecting members 20 are connected by the connecting members 23 arranged between the connecting members 20, they are assembled by connecting the two connecting members 20 and the plurality of hollow portion forming members 30. The assembled state of the hollow portion molding die 10 to be formed can be more easily maintained. As a result, when molding the hollow molded body 100 using the hollow portion molding die 10 and the outer molding die 80, the hollow portion molding die 10 is arranged inside the outer molding die 80 without losing its shape. Can be molded. As a result, the hollow molded body 100 having the hollow portion 105 can be molded more easily.
　また、中空部成形部材３０は、２つの結合部材２０の間に亘って配置され、２つの結合部材２０に両端が結合されるため、２つの結合部材２０と複数の中空部成形部材３０とを結合することにより組み立てられる中空部成形型１０の組み立て状態を、より容易に維持することができる。これにより、中空部成形型１０と外側成形型８０とを用いて中空成形体１００の成形をする際に、中空部成形型１０の形状を崩すことなく、外側成形型８０の内側に配置して成形することができる。この結果、中空部１０５を有する中空成形体１００の成形を、より容易に行うことができる。 Further, since the hollow portion forming member 30 is arranged between the two connecting members 20 and both ends are bonded to the two connecting members 20, the two connecting members 20 and the plurality of hollow portion forming members 30 are combined. The assembled state of the hollow portion molding die 10 assembled by joining can be more easily maintained. As a result, when molding the hollow molded body 100 using the hollow portion molding die 10 and the outer molding die 80, the hollow portion molding die 10 is arranged inside the outer molding die 80 without losing its shape. Can be molded. As a result, the hollow molded body 100 having the hollow portion 105 can be molded more easily.
　また、実施形態に係る中空成形体１００の製造方法では、複数の中空部成形部材３０と結合部材２０とが結合された中空部成形型１０と外側成形型８０とで中空成形体１００を成形した後、結合部材２０を中空部成形部材３０から取り外して取出し部１０１から取り出し、さらに、中空部成形部材３０を取出し部１０１から取り出している。これにより、取出し部１０１よりも大きな中空部１０５を中空部成形型１０によって成形した後、中空部成形型１０が有する結合部材２０と中空部成形部材３０とを取出し部１０１からそれぞれ取り出すことができる。この結果、中空部１０５を成形する成形型の取出し部１０１と比較して大きな中空部１０５を有する中空成形体１００を成形することができ、取出し部１０１よりも大きな中空部１０５を有する中空成形体１００を、一体成形によって成形することができる。 Further, in the method for manufacturing the hollow molded body 100 according to the embodiment, the hollow molded body 100 is molded by the hollow portion molding die 10 in which the plurality of hollow portion molding members 30 and the coupling member 20 are bonded and the outer molding die 80. After that, the coupling member 20 is removed from the hollow portion molding member 30 and taken out from the take-out portion 101, and further, the hollow portion molding member 30 is taken out from the take-out portion 101. As a result, after the hollow portion 105 larger than the take-out portion 101 is molded by the hollow portion molding die 10, the connecting member 20 and the hollow portion molding member 30 of the hollow portion molding die 10 can be taken out from the take-out portion 101, respectively. .. As a result, the hollow molded body 100 having a larger hollow portion 105 as compared with the take-out portion 101 of the molding die for molding the hollow portion 105 can be molded, and the hollow molded body having the hollow portion 105 larger than the take-out portion 101 can be molded. 100 can be molded by integral molding.
　また、実施形態に係る中空成形体１００の製造方法では、中空部成形部材３０と結合部材２０とは、内側空間１５に内部部材１１０を入り込ませて結合し、内側空間１５に内部部材１１０を入り込ませた中空部成形型１０と外側成形型８０とで中空成形体１００の成形を行った後、取出し部１０１から結合部材２０と中空部成形部材３０とを取り出している。これにより、中空部１０５に内部部材１１０が入り込んだ中空成形体１００を、一体成形により成形することができる。この結果、中空成形体１００の使用時の用途を広げることができる。 Further, in the method for manufacturing the hollow molded body 100 according to the embodiment, the hollow portion molding member 30 and the connecting member 20 are connected by inserting the internal member 110 into the inner space 15 and inserting the internal member 110 into the inner space 15. After molding the hollow molded body 100 with the hollow portion molding die 10 and the outer molding die 80, the coupling member 20 and the hollow portion molding member 30 are taken out from the take-out portion 101. As a result, the hollow molded body 100 in which the internal member 110 is inserted into the hollow portion 105 can be integrally molded. As a result, it is possible to expand the applications of the hollow molded body 100 when it is used.
［変形例］
　なお、上述した実施形態では、中空部１０５に内部部材１１０が入り込んだ中空成形体１００の成形を行っているが、中空部１０５には内部部材１１０を入り込ませなくてもよい。つまり、中空部１０５の成形を行う中空部成形型１０の組み立てを行う際に、内側空間１５に、内部部材１１０を入り込ませなくてもよい。中空部１０５を成形する中空部成形型１０の取出し部１０１と比較して、大きな中空部１０５を有する中空成形体１００を成形することができれば、中空部１０５に内部部材１１０を入り込ませるか否かは問わない。 [Modification example]
In the above-described embodiment, the hollow molded body 100 in which the internal member 110 is inserted into the hollow portion 105 is molded, but the internal member 110 may not be inserted into the hollow portion 105. That is, when assembling the hollow portion molding die 10 for molding the hollow portion 105, it is not necessary to insert the internal member 110 into the inner space 15. If the hollow molded body 100 having a large hollow portion 105 can be molded as compared with the take-out portion 101 of the hollow portion molding mold 10 for molding the hollow portion 105, whether or not the internal member 110 is inserted into the hollow portion 105. Does not matter.
　また、上述した実施形態に係る中空部成形型１０では、連結部材２３は湾曲して形成されているが、連結部材２３は湾曲していなくてもよい。図１７は、実施形態に係る中空部成形型１０の変形例を示す説明図である。中空部１０５に内部部材１１０を入り込ませなかったり、内部部材１１０の大きさが比較的小さなものであったりする場合には、２つの結合部材２０を連結する連結部材２３は、図１７に示すように直線状に形成されていてもよい。連結部材２３を直線状に形成することにより、連結部材２３の製造性を高めることができる。 Further, in the hollow portion molding die 10 according to the above-described embodiment, the connecting member 23 is formed to be curved, but the connecting member 23 does not have to be curved. FIG. 17 is an explanatory view showing a modified example of the hollow portion molding die 10 according to the embodiment. When the internal member 110 is not inserted into the hollow portion 105 or the size of the internal member 110 is relatively small, the connecting member 23 for connecting the two connecting members 20 is as shown in FIG. It may be formed in a straight line. By forming the connecting member 23 in a straight line, the manufacturability of the connecting member 23 can be improved.
　また、上述した実施形態に係る中空部成形型１０では、支持部材２２は２箇所に配置されているが、図１７に示すように、支持部材２２は１箇所のみであってもよい。支持部材２２は、成形装置７０を用いて中空部成形型１０の成形を行う際に、中空部成形型１０を成形装置７０で支持することができるように配設されていれば、その数や形状は、実施形態に記載した数や形状以外であってもよい。 Further, in the hollow portion molding die 10 according to the above-described embodiment, the support member 22 is arranged at two places, but as shown in FIG. 17, the support member 22 may be only at one place. When the hollow portion molding die 10 is molded by using the molding apparatus 70, the number of the support members 22 is increased if the support member 22 is arranged so that the hollow portion molding die 10 can be supported by the molding apparatus 70. The shape may be other than the number and shape described in the embodiment.
　また、上述した実施形態では、中空成形体１００には、取出し部１０１以外の孔部１０２が複数形成されているが、取出し部１０１以外の孔部１０２は形成されていなくてもよい。 Further, in the above-described embodiment, the hollow molded body 100 is formed with a plurality of holes 102 other than the take-out portion 101, but the hole portions 102 other than the take-out portion 101 may not be formed.
　また、上述した実施形態では、中空成形体１００は、球体状の形状で形成されているが、中空成形体１００は、球体状以外の形状で形成されていてもよい。中空成形体１００は、例えば、ラグビーボール状の形状で形成されていてもよく、また、直方体や八面体等の立体形状で形成されていてもよい。中空成形体１００は、内側に中空部１０５が形成されるものであれば、全体的な形状は問わない。 Further, in the above-described embodiment, the hollow molded body 100 is formed in a spherical shape, but the hollow molded body 100 may be formed in a shape other than the spherical shape. The hollow molded body 100 may be formed in a rugby ball shape, for example, or may be formed in a three-dimensional shape such as a rectangular parallelepiped or an octahedron. The overall shape of the hollow molded body 100 does not matter as long as the hollow portion 105 is formed inside.
　１　中空成形体成形型
　１０　中空部成形型
　１１　内側成形面
　１５　内側空間
　２０　結合部材
　２１　結合凸部
　２２　支持部材
　２３　連結部材
　２４　着脱部
　２５　ベース部
　２６　ネジ孔
　２７　ネジ部
　３０　中空部成形部材
　３１　結合溝
　７０　成形装置
　７１　上側ケース部
　７２　下側ケース部
　７３　ベース部
　７５　樹脂注入部
　７６　樹脂射出経路
　８０　外側成形型
　８１　上部成形型
　８２　下部成形型
　８３　側部成形型
　８５　外側成形面
　８６　凸部
　１００　中空成形体
　１０１　取出し部
　１０２　孔部
　１０５　中空部
　１１０　内部部材 1 Hollow molded body molding mold 10 Hollow part molding mold 11 Inner molding surface 15 Inner space 20 Coupling member 21 Coupling convex part 22 Support member 23 Connecting member 24 Detachable part 25 Base part 26 Screw hole 27 Threaded part 30 Hollow part molding member 31 Groove 70 Molding device 71 Upper case part 72 Lower case part 73 Base part 75 Resin injection part 76 Resin injection path 80 Outer molding mold 81 Upper molding mold 82 Lower molding mold 83 Side molding mold 85 Outer molding surface 86 Convex part 100 Hollow Molded body 101 Extraction part 102 Hole part 105 Hollow part 110 Internal member

Claims (7)

  1. 　中空成形体の中空部の一部をそれぞれ成形する複数の中空部成形部材と、
    　複数の前記中空部成形部材が着脱自在に結合する結合部材と、
    　を備え、
    　前記中空部成形部材は、複数の前記中空部成形部材が組み合わされることにより前記中空部を成形可能な形状に形成され、
    　前記中空部成形部材と前記結合部材とは、前記中空部成形部材が前記結合部材に結合して複数の前記中空部成形部材と前記結合部材とが組み合わされることにより、前記中空部を成形する中空部成形型として形成されることを特徴とする中空成形体成形型。     A plurality of hollow part molding members for molding a part of the hollow part of the hollow molded body,
    A connecting member to which the plurality of hollow portion molding members are detachably joined,
    With
    The hollow portion forming member is formed into a shape capable of forming the hollow portion by combining a plurality of the hollow portion forming members.
    The hollow portion molding member and the coupling member are hollows that form the hollow portion by connecting the hollow portion molding member to the coupling member and combining a plurality of the hollow portion molding members and the coupling member. A hollow molded body molding die characterized by being formed as a partial molding die.
  2. 　前記中空部成形部材は、前記結合部材を中心とする周方向の１周に亘って複数の前記中空部成形部材が前記結合部材に結合する請求項１に記載の中空成形体成形型。 The hollow molded body molding mold according to claim 1, wherein the hollow portion molding member is a plurality of the hollow portion molding members coupled to the coupling member over one circumference in the circumferential direction centered on the coupling member.
  3. 　前記結合部材は２つが備えられると共に、２つの前記結合部材は、前記中空部の中心を中心とする対称位置に配置される請求項１または２に記載の中空成形体成形型。 The hollow molded body molding mold according to claim 1 or 2, wherein the two connecting members are provided, and the two connecting members are arranged at symmetrical positions about the center of the hollow portion.
  4. 　２つの前記結合部材は、前記結合部材同士の間に亘って配置される連結部材により連結される請求項３に記載の中空成形体成形型。 The hollow molded body molding mold according to claim 3, wherein the two connecting members are connected by a connecting member arranged between the connecting members.
  5. 　前記中空部成形部材は、２つの前記結合部材の間に亘って配置され、２つの前記結合部材に両端が結合される請求項３または４に記載の中空成形体成形型。 The hollow molded body molding mold according to claim 3 or 4, wherein the hollow portion molding member is arranged between the two coupling members and both ends are coupled to the two coupling members.
  6. 　中空成形体の中空部を成形する複数の中空部成形部材を結合部材に結合する工程と、
    　前記中空部成形部材と前記結合部材とが結合された中空部成形型を外側成形型の内側に入れ、前記結合部材の取出し部を有する前記中空成形体を前記中空部成形型と前記外側成形型とで成形する工程と、
    　前記結合部材を前記中空部成形部材から取り外し、前記結合部材を前記中空成形体に形成される前記取出し部から取り出す工程と、
    　前記中空部成形部材を前記中空成形体に形成される前記取出し部から取り出す工程と、
    　を含むことを特徴とする中空成形体の製造方法。     A process of connecting a plurality of hollow portion molding members for forming a hollow portion of a hollow molded body to a connecting member, and
    The hollow portion molding mold in which the hollow portion molding member and the coupling member are bonded is placed inside the outer molding mold, and the hollow molded body having the take-out portion of the coupling member is the hollow portion molding mold and the outer molding mold. And the process of molding with
    A step of removing the coupling member from the hollow portion molding member and taking out the coupling member from the extraction portion formed in the hollow molded body.
    A step of taking out the hollow portion molding member from the taking-out portion formed in the hollow molded body, and
    A method for producing a hollow molded product, which comprises.
  7. 　前記中空部成形部材と前記結合部材とは、前記中空部成形型の内側に内側空間が形成される形態で結合すると共に、前記中空部成形部材と前記結合部材とは、前記内側空間に内部部材を入り込ませて結合し、
    　前記中空成形体の成形は、前記内側空間に前記内部部材を入り込ませた前記中空部成形型と前記外側成形型とで行い、
    　前記中空成形体に形成される前記取出し部から前記結合部材と前記中空部成形部材とを取り出すことにより、前記中空部に前記内部部材が入り込んだ前記中空成形体を形成する請求項６に記載の中空成形体の製造方法。     The hollow portion molding member and the coupling member are connected in a form in which an inner space is formed inside the hollow portion molding mold, and the hollow portion molding member and the coupling member are internal members in the inner space. Put in and combine,
    The hollow molded body is molded by the hollow portion molding die in which the internal member is inserted into the inner space and the outer molding die.
    The sixth aspect of claim 6, wherein the connecting member and the hollow portion molding member are taken out from the taking-out portion formed in the hollow molded body to form the hollow molded body in which the internal member is inserted into the hollow portion. A method for manufacturing a hollow molded product.
PCT/JP2019/034005 2019-08-29 2019-08-29 Hollow molded article molding die and method for producing hollow molded article WO2021038810A1 (en)

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