WO2021038810A1 - Matrice de moulage d'article moulé creux et méthode de production d'un article moulé creux - Google Patents

Matrice de moulage d'article moulé creux et méthode de production d'un article moulé creux 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
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English (en)
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/ja
Priority to CN201980097051.1A priority patent/CN114502345A/zh
Priority to PCT/JP2019/034005 priority patent/WO2021038810A1/fr
Publication of WO2021038810A1 publication Critical patent/WO2021038810A1/fr

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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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Afin de mouler un article moulé creux ayant une partie creuse plus grande que la partie sortie de la matrice de moulage pour mouler la partie creuse, cette matrice de moulage d'article moulé creux 1 comprend une pluralité d'éléments de moulage de partie creuse 30 qui moulent individuellement une partie de la partie creuse 105 d'un article moulé creux 100, et un élément de jonction 20 auquel la pluralité d'éléments de moulage de partie creuse 30 sont joints de façon détachable. Les éléments de moulage de partie creuse 30 sont formés selon une forme permettant à la partie creuse 105 d'être moulée par combinaison de la pluralité d'éléments de moulage de partie creuse 30, et les éléments de moulage de partie creuse 30 et l'élément de jonction 20 sont formés sous la forme d'une matrice de moulage de partie creuse 10 pour mouler la partie creuse 105 par les éléments de moulage de partie creuse 30 qui sont reliés à l'élément de liaison 20 et la pluralité d'éléments de moulage de partie creuse 30 étant combinés avec l'élément de liaison 20.
PCT/JP2019/034005 2019-08-29 2019-08-29 Matrice de moulage d'article moulé creux et méthode de production d'un article moulé creux WO2021038810A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2021541910A JP7290232B2 (ja) 2019-08-29 2019-08-29 中空成形体成形型及び中空成形体の製造方法
CN201980097051.1A CN114502345A (zh) 2019-08-29 2019-08-29 中空成形体成形模以及中空成形体的制造方法
PCT/JP2019/034005 WO2021038810A1 (fr) 2019-08-29 2019-08-29 Matrice de moulage d'article moulé creux et méthode de production d'un article moulé creux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/034005 WO2021038810A1 (fr) 2019-08-29 2019-08-29 Matrice de moulage d'article moulé creux et méthode de production d'un article moulé creux

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WO2021038810A1 true WO2021038810A1 (fr) 2021-03-04

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JP (1) JP7290232B2 (fr)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002210747A (ja) * 2001-01-18 2002-07-30 Nippon Valqua Ind Ltd 樹脂中空成形体の製造方法
JP2005246888A (ja) * 2004-03-08 2005-09-15 Hamani Kasei Kk 化粧シートの製造方法及び化粧シート用成形型
JP2016054966A (ja) * 2014-09-10 2016-04-21 株式会社Ｎｅｏ 合成樹脂製玩具及び合成樹脂製玩具の製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA034344B1 (ru) * 2014-08-29 2020-01-29 Кетер Пластик Лтд. Сегментированная система формовочного стержня пресс-формы для литья под давлением и способ литья под давлением полых изделий, изготовленных таким способом
CN109177226B (zh) * 2018-08-29 2020-09-18 航天材料及工艺研究所 一种近似封闭结构复合材料箱体的成型模具及其成型方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002210747A (ja) * 2001-01-18 2002-07-30 Nippon Valqua Ind Ltd 樹脂中空成形体の製造方法
JP2005246888A (ja) * 2004-03-08 2005-09-15 Hamani Kasei Kk 化粧シートの製造方法及び化粧シート用成形型
JP2016054966A (ja) * 2014-09-10 2016-04-21 株式会社Ｎｅｏ 合成樹脂製玩具及び合成樹脂製玩具の製造方法

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