JP2007326243A - Mold and method for producing molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mold which can demold the first and second pillar-shaped parts without applying an excessive load in the pillar axis direction on the first and second pillar-shaped parts. <P>SOLUTION: The mold M has a pillar-shaped part forming mold 20 in which the first and second pillar-shaped part forming holes 51 and 52 are formed and a base part forming mold 10 which is formed to cover the openings of the first and second pillar-shaped part forming holes 51 and 52. The pillar-shaped part forming mold 20 has a first pillar-shaped part forming segment 21 in which the first pillar-shaped part forming hole 51 is formed and which is composed of a pair of mold pieces 21a and 21b divided to split the hole 51 vertically, a second pillar-shaped part forming segment 22 in which the second pillar-shaped part forming hole 52 is formed and which is composed of a pair of mold pieces 22a and 22b divided to split the hole 52 vertically and to be parallel with the parting line of the first pillar-shaped part forming segment 21, and a spacer segment 24 which is formed to be held between the segments 21 and 22. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a molding die used for molding a molded body in which first and second columnar portions are integrally standing with a base portion spaced apart from each other, and a method of manufacturing a molded body using the same.

  A molded body in which a plurality of columnar parts are integrally provided on the base with a space therebetween is useful as an impact absorbing member or the like.

For example, Patent Document 1 discloses footwear including an upper and a sole structure fixed to the upper in a combined state, and the sole structure extends outward from the outsole fixed to the upper and the outsole. A plurality of grip members, a heel plate extending downward and rearward from a middle foot portion of the outsole, and extending between the outsole and the heel plate and disposed on an outer portion of the heel portion of the outsole And a second strut extending between the outsole and the heel plate and disposed on the inner side of the heel of the outsole. Further, this document discloses that the first and second struts are formed of rubber, polyurethane foam, or the like, and are fixed to the outsole and the heel plate with an adhesive.
Japanese Patent Laid-Open No. 2005-199075

  An object of the present application is to form a molded body in which the first and second columnar portions are integrally provided with a distance from each other at the base, and in addition to the first and second columnar portions. , A mold capable of removing the first and second columnar parts without applying an excessive load in the column axis direction, which is the direction in which they extend from the base part, and a method for producing a molded body using the same Is to provide.

The molding die of the present invention is used to mold a molded body in which the first and second columnar parts are integrally erected with an interval between the base parts,
A columnar part forming mold in which first and second columnar part forming holes for forming the first and second columnar parts are respectively formed;
It is provided so as to cover the openings of the first and second columnar part forming holes with respect to the columnar part forming mold, and in combination with the columnar part forming mold, each of the first and second columnar part forming holes is provided. A base forming mold that constitutes a base forming part for setting a base constituent material continuously or for molding a base with a molding material in advance,
With
The columnar part forming mold is
A first columnar part forming segment comprising a pair of mold pieces, wherein the first columnar part forming hole is formed and divided so as to vertically divide the first columnar part forming hole;
The first columnar part forming segment is provided so as to be arranged on the side of the dividing line, the second columnar part forming hole is formed, and the second columnar part forming part is vertically divided. And the 2nd columnar part formation segment which consists of a pair of mold pieces divided along the division line of the 1st columnar part formation segment,
A spacer segment provided to be sandwiched between the first columnar part forming segment and the second columnar part forming segment;
Have

And the manufacturing method of the molded object of this invention uses the shaping | molding die of this invention, and is the method of manufacturing the molded object by which the 1st and 2nd columnar part each stood upright integrally in the base part at intervals. Because
A molding step of setting the molding material in each of the first and second columnar part forming holes and molding the first and second columnar parts;
After the molding step, after removing the spacer segment, the first and second columnar portion forming segments are removed from the mold pieces on the sides of the molded first and second columnar portions, respectively. In addition, a demolding step of dividing the mold and demolding the molded body,
Is provided.

  According to the present invention, it is possible to integrally form the formed body in which the first and second columnar portions are respectively erected at intervals in the base portion, and the columnar portion forming mold is the first and second columnar shapes. Since it has a part formation segment and a spacer segment between them, the spacer segment is removed after molding, and the first piece is removed so that each mold piece is removed from each side of the molded first and second columnar parts. By molding each of the second columnar part forming segments, the first and second columnar parts are formed without applying an excessive load in the column axis direction, which is the direction in which they extend from the base part. The body can be demolded.

  Hereinafter, embodiments will be described in detail with reference to the drawings.

(Embodiment 1)
<Molding mold>
1 to 3 show a mold M according to the first embodiment.

  The mold M includes an upper mold 10, a middle mold 20, and a lower mold 30 each formed in a rectangular plate shape. The middle mold 20 forms a mold body, and the middle mold 20 includes the upper mold 10 and the lower mold 30. It has a three-layer structure that is sandwiched from above and below. Each of the upper mold 10, the middle mold 20, and the lower mold 30 is made of, for example, iron, stainless steel, copper, aluminum, aluminum alloy, epoxy resin, phenol resin, or the like. Note that the upper mold 10, the middle mold 20, and the lower mold 30 may all be made of the same material, or may be made of different materials.

  FIG. 4 shows the middle mold 20.

  The middle mold 20 includes first and second columnar portion forming segments 21 and 22, a spacer segment 24, and an outer frame 25. The first and second columnar portion forming segments 21 and 22 and the spacer segment 24 are outer frames. 25 and is integrally formed. The middle mold 20 is formed to have a length of 50 to 500 mm, a width of 50 to 500 mm, and a thickness of 5 to 50 mm, for example.

  Each of the first columnar portion forming segments 21 is configured such that a pair of outer and inner mold pieces 21a and 21b having the same length formed in an elongated rectangular parallelepiped shape are arranged such that the side surfaces are in contact with each other. ing. On the opposite side of the outer mold piece 21a to the inner mold piece 21b, two semi-circular cross-sectionally missing portions are formed at intervals in the length direction, while the outer mold piece 21a of the inner mold piece 21b and On the opposite side, two defect portions having a semicircular cross section are formed corresponding to the defect portions of the outer mold piece 21a. And the 1st columnar part formation segment 21 is a pair of 1st and 3rd of the cylindrical hole which penetrated in the up-down direction, respectively by the combination of the defect | deletion part of this outer side mold piece 21a, and the defect | deletion part of the inner side mold piece 21b. Columnar portion forming holes 51 and 53 are formed. That is, the first columnar part forming segment 21 is divided into outer and inner mold pieces 21a and 21b so as to vertically divide the first and third columnar part forming holes 51 and 53, respectively. The 1st and 3rd columnar part formation holes 51 and 53 are formed in diameter 5-50 mm, for example.

  The second columnar section forming segment 22 has the same configuration as the first columnar section forming segment 21 including the dimensional configuration except that the arrangement of the outer and inner mold pieces 22a and 22b is symmetric. A pair of second and fourth columnar portion forming holes 52 and 54 each having a penetrating cylindrical hole extending in the vertical direction is configured by a combination of the defective portion of 22a and the defective portion of the inner mold piece 22b. In other words, the second columnar portion forming segment 22 is divided into the outer and inner mold pieces 22a and 22b so as to vertically divide the second and fourth columnar portion forming holes 52 and 54, respectively.

  The spacer segment 24 is formed in an elongated rectangular parallelepiped that is slightly longer than the first and second columnar portion forming segments 21 and 22.

  The outer frame 25 includes a pair of L-shaped members 26 and a connecting member 27 having the same dimensions. The end surfaces of the short portions 26a of the pair of L-shaped members 26 are abutted with each other and connected between the end portions of the long portion 26b. A material 27 is interposed to form a square frame.

  Each L-shaped member 26 is formed in a rectangular shape in cross section, and an L-shaped material mounting hinge 41 is provided between the end surface of the long portion 26b and the outer side surface of the end portion of the connecting member 27, thereby FIG. As shown in FIG. 2, the connecting member 27 is rotatably attached to the outside. Each L-shaped member 26 is formed with a hinge accommodating portion 26c formed of a groove having a U-shaped cross section extending in the vertical direction inside the end portion of the long portion 26b. Further, the pair of L-shaped members 26 are provided with fixing hooks 28 for abutting and fixing the end surfaces of the short portions 26a to the outer side surfaces of the end portions of both short portions 26a so as to connect them. Yes.

  The connecting member 27 is formed in an elongated rectangular parallelepiped shape, and a spacer fitting portion 27a made of a groove having a U-shaped cross section is formed inside the center so as to extend in the vertical direction.

  Each of the outer mold pieces 21a and 22a of the first and second columnar section forming segments 21 and 22 is provided with a mold piece mounting hinge 42 between the outer side surface of one end portion and the end surface of the connecting member 27. As shown in FIG. 4, it is attached to the connecting member 27 so as to be rotatable outward.

In the middle mold 20, each of the first and second columnar portion forming segments 21 and 22 is formed by combining the outer mold pieces 21 a and 22 a and the inner mold pieces 21 b and 22 b, and one end face thereof is a connecting member of the outer frame 25. 27, the spacer segment 24 is fitted to the spacer fitting portion 27a of the outer frame 25 at one end, and the first columnar portion forming segment 21 and the second columnar portion forming segment are provided. 22, and the outer frame 25 is provided so that the end faces of the short portions 26 a of the pair of L-shaped members 26 face each other, and they are fixed by the fixing hooks 28. As a result, the assembled state is formed. At this time, the first and second columnar portion forming segments 21 and 22 are provided so that one of them is arranged on the side of the other dividing line and the both dividing lines extend in parallel. The first columnar portion forming segment 21 includes first and third columnar portion forming holes 51 and 53, and the second columnar portion forming segment 22 includes second and fourth columnar portion forming holes 52 and 54. The The first and second columnar portion forming segments 21 and 22, the spacer segment 24, and the outer frame 25 have the other end surfaces of the first and second columnar portion forming segments 21 and 22 and the spacer segment 24 flush with each other, The upper and lower surfaces are also flush with each other, and are dimensioned so that no gap is formed between the first and second columnar portion forming segments 21 and 22 and the spacer segment 24 and the outer frame 25. For example, The sum of the widths of the second columnar portion forming segments 21 and 22 and the spacer segment 24 is equal to the length of the connecting member 27. Further, the maximum width a ₁ of the inner mold pieces 21 b and 22 b and the width b of the spacer segment 24 are the minimum width a ₂ (thickness of the thinnest portion) of the inner mold pieces 21 b and 22 b and the width b of the spacer segment 24. The dimensions are set so that the sum is larger than the maximum width a _{1 of the} inner mold pieces 21b and 22b. In the assembled state, the mold piece attaching hinge 42 interposed between the outer mold pieces 21 a and 22 a and the connecting member 27 is accommodated in the hinge accommodating portion 26 c of the L-shaped material 26.

  The upper mold 10 is narrower than the middle mold 20, and is formed to have a length of 50 to 500 mm, a width of 50 to 500 mm, and a thickness of 5 to 50 mm, for example. The upper mold may be formed with the same width as the middle mold 20. On the lower surface side of the upper mold 10, an upper base forming recess 11 having a rectangular shallow bottom is provided. The upper base forming recess 11 is formed, for example, in a length of 30 to 400 mm, a width of 30 to 400 mm, and a depth of 1 to 30 mm.

  The lower mold 30 has substantially the same width as the middle mold 20 and is formed, for example, in a length of 50 to 500 mm, a width of 50 to 500 mm, and a thickness of 5 to 50 mm. On the upper surface side of the lower mold 30, a lower base forming recess 31 having a rectangular shallow bottom is provided. The lower base forming recess 31 is formed, for example, in a length of 30 to 400 mm, a width of 30 to 400 mm, and a depth of 1 to 30 mm.

  In the upper mold 10, the middle mold 20, and the lower mold 30, the upper base forming recess 11 covers the openings of the first to fourth columnar section forming holes 51 to 54 and the lower base forming recess 31 forms the first to fourth columnar sections. When the forming die M is configured by stacking so as to cover the openings of the holes 51 to 54, a cavity for forming the formed body A is formed inside the die as shown in FIG. The cavity includes first and third columnar portion forming holes 51 and 53 formed in the first columnar portion forming segment 21, and second and fourth columnar portion forming holes 52 formed in the second columnar portion forming segment 22. , 54, a combination of the upper base forming portion 57 composed of the upper base forming recess 11 of the upper mold 10 and the upper surface of the middle mold 20, and the lower base forming recess 31 of the lower mold 30 and the lower surface of the middle mold 20. And a lower base forming portion 58 constituted by: In addition, each of the upper and lower base forming portions 57 and 58 is continuous with each of the first to fourth columnar portion forming holes 51 to 54, and this cavity is configured as a whole.

  Therefore, in this mold M, the middle mold 20 constitutes a columnar part forming mold, the upper mold 10 constitutes a base part forming mold, and the lower mold 30 constitutes another base part forming mold. The upper base forming recess 11 and the upper surface of the middle mold 20 constitute a base forming section for molding the base, and the lower base forming recess 31 of the lower mold 30 and the lower surface of the middle mold 20 for molding the other base. The other base formation part is comprised.

  The upper mold 10, the middle mold 20, and the lower mold 30 may be separated from each other, and each of the upper mold 10 and the lower mold 30 may be hinged to the connecting member 27 of the outer frame 25 of the middle mold 20. It may be configured so that it can be opened and closed via, for example.

<Method for producing molded body>
Next, the manufacturing method of the molded object A using the said shaping | molding die M is demonstrated.

-Mold preparation step-
First, the middle die 20 assembled on the lower die 30 is placed, and the upper die 10 is removed to prepare the molding die M. For the middle mold 20, as shown in FIG. 4, from the state in which the L-shaped material 26 and the outer mold pieces 21 a and 22 a are opened to the outside, one end portion of the spacer segment 24 is attached to the spacer fitting portion 27 a of the connecting material 27. The outer mold pieces 21a and 22a are rotated and arranged so that one end face thereof is brought into contact with the inner side surface of the connecting member 27, and the inner mold pieces 21b and 22b are placed on the outer mold pieces 21a and 22a. And the spacer segment 24, the two L-shaped members 26 are turned inward, the end surfaces of the short portions 26a are brought into contact with each other, and fixed by a fixing hook 28 to form a mold.

  It is preferable that a mold release agent is applied in advance to the mold surfaces of at least the portions constituting the cavity of the upper mold 10, the middle mold 20 and the lower mold 30 by coating, spraying, dipping or the like. Examples of the mold release agent include dimethyl silicone oil, mineral oil, paraffin wax and the like.

-Material setting step-
After preparing the mold M, a molding material is set in the cavity formation scheduled portions such as the lower base forming recess 31 and the first to fourth columnar section forming holes 51 to 54, and then the upper mold 10 is placed on the middle mold 20. Put it on. Depending on the type of molding material, the molding material is also set in the upper base forming recess 11.

  Here, even if the same molding material is set in each of the upper and lower base forming recesses 11 and 31 and the first to fourth columnar portion forming holes 51 to 54, different molding materials are set. Or either.

  Examples of molding materials include polyurethane resin raw materials, epoxy resin raw materials, phenolic resin raw materials, thermosetting polyester resin raw materials, thermosetting resin raw materials such as urea resin raw materials, and olefin resins such as polyethylene resins and polypropylene resins. Thermoplastic resins such as styrene resins, natural rubber, isoprene rubber, chloroprene rubber, styrene-butadiene rubber, butadiene rubber, acrylonitrile-butadiene rubber, ethylene-propylene rubber, butyl rubber, acrylic rubber, etc. Can be mentioned. These liquids are heated at room temperature to form a molded body by condensation, copolymerization or crosslinking, etc., or solids are heated at room temperature to exhibit fluidity, and cooling or crosslinking to form the molded body. The material to be formed.

  As the molding material, a material that foams during molding to give a foamed molded product may be used. Examples of the molding material that gives the foamed molded product include self-foaming polyurethane resin raw materials and the like, as well as olefin resins and styrene resins. When using an olefin resin, a styrene resin, or the like, there are a method of foaming using prefoamed particles obtained by prefoaming these resins, a method of impregnating a resin with a foaming agent, and foaming in a mold.

  Setting the molding material in the present invention means to inject or fill the molding material such as liquid / solid / foam as described above, that is, the molding material.

  Specific examples of the polyurethane resin raw material include, but are not limited to, known ones. Typical examples thereof include polyether-based polyurethane resin raw materials, polyester-based polyurethane resin raw materials, and the like. .

  As the polyurethane resin raw material, it is preferable to use a mixture of a polyol solution and an isocyanate prepolymer. The polyol solution contains a polyol component such as polyether polyol and polyester polyol, a chain extender, water, a foam stabilizer, and, if necessary, a catalyst. The isocyanate prepolymer is obtained from a polyol component such as polyether polyol or polyester polyol and a polyisocyanate component such as methylene diphenyl diisocyanate or a modified product thereof. These polyol components such as polyether polyols and polyester polyols, chain extenders, foam stabilizers, catalysts, polyisocyanate components and the like can be composed of known ones. The polyurethane resin raw material may contain a contact angle reducing substance. The contact angle reducing substance can be contained in the polyol solution and / or the isocyanate prepolymer, but is preferably contained in the isocyanate prepolymer. The content of the contact angle reducing substance in the isocyanate prepolymer is preferably 0.1 to 20% by mass, and more preferably 0.1 to 10% by mass.

  The set amount of the molding material is set to an appropriate amount corresponding to the material of the molding material. For example, in the case of a non-foamed molding material, the volume after molding is preferably set to an amount that is slightly larger than the volume of the cavity.

-Molding step-
After the molding material is set, the molding die M is held for a predetermined time under conditions of a predetermined molding temperature and a predetermined molding pressure. At this time, the molding material flows so as to fill the cavity, or in addition to that, the molding A is formed with a reaction such as condensation, copolymerization or crosslinking.

  Each of the molding temperature, the molding pressure, and the holding time is set to an appropriate value corresponding to the material of the molding material.

  For example, when the molding material is a foamed polyurethane resin raw material, the temperature of the mold M is preferably 20 to 100 ° C, and more preferably 40 to 70 ° C. Examples of means for heating the mold M include a hot press and an oven.

  When the molding material is a foamed polyurethane resin raw material, the molding pressure is preferably 0.05 to 1 MPa, more preferably 0.1 to 0.5 MPa. Examples of means for pressurizing the mold M include a hot press and a C-type clamp.

-Demolding step-
After molding, the molded body A is removed from the mold M. In the case where a thermoplastic resin is used as the molding material, the molding die M is cooled before demolding.

  When removing the mold, first, each of the upper mold 10 and the lower mold 30 is removed from the middle mold 20. At this time, the upper base 61 formed between the upper mold 10 and the middle mold 20 is exposed, and the lower base 62 formed between the lower mold 30 and the middle mold 20 is exposed.

  Next, the fixing hook 28 attached to the outer frame 25 of the middle mold 20 is released, both the L-shaped members 26 are rotated outward, and the outer mold pieces of the first and second columnar portion forming segments 21 and 22 are also rotated. 21a and 22a are also rotated outward to remove them laterally with respect to the molded first to fourth columnar portions 71 to 74.

  Next, the spacer segment 24 is removed from the spacer fitting portion 27a and pulled out to the other end side to be removed.

Subsequently, the inner mold piece 21b of the first columnar portion forming segment 21 is removed laterally with respect to the molded first and third columnar portions 71 and 73, and the length at the position where the spacer segment 24 is provided. Pull out to the other end side along the direction. At this time, the inner mold piece 21b is set such that the sum of the minimum width a ₂ (thickness of the thinnest portion) of the inner mold piece 21b and the width b of the spacer segment 24 is larger than the maximum width a ₁ of the inner mold piece 21b. Since the maximum width a ₁ and the width b of the spacer segment 24 are dimensioned, the inner mold piece 21b can be smoothly pulled out without interfering with the molded first and third columnar portions 71 and 73. .

  Similarly, the inner mold piece 22b of the second columnar portion forming segment 22 is removed laterally with respect to the molded second and fourth columnar portions 72 and 74 and pulled out to the other end side along the length direction. Then, the molded body A is taken out.

  In addition, after removing the inner mold pieces 21b and 22b of the first and second columnar section forming segments 21 and 22, the outer mold pieces 21a and 22a may be rotated outward, or the second columnar section first. The inner mold piece 22b of the forming segment 22 may be removed, and the inner mold piece 21b of the first columnar section forming segment 21 may be removed later.

  FIG. 5 shows the manufactured compact A.

  The molded body A manufactured as described above is composed of an upper base portion (base portion) 61 and a lower base portion (other base portion) 62 each formed in a rectangular flat plate shape, and a circle interposed between them. The first to fourth columnar portions 71 to 74 are formed in a columnar shape and are arranged 2 × 2 in two vertical and two horizontal directions. And this molded object A is integrally formed with the upper and lower base portions 61 and 62 and the first to fourth columnar portions 71 to 74. Further, the upper and lower bases 61 and 62 and the first to fourth columnar parts 71 to 74 are made of a plurality of kinds of materials even if they are all made of the same material. Either may be sufficient.

  In order to manufacture such a molded body A, it is inevitable that a split mold is used. However, if the molded body A is manufactured using the molding mold M of Embodiment 1, the middle mold 20 has the first and second columnar shapes. Since it has the part formation segments 21 and 22 and the spacer segment 24 between them, the spacer segment 24 is removed after molding, and an outer mold piece is formed on the side of the molded first to fourth columnar parts 71 to 74. 21a, 22a and inner mold pieces 21b, 22b are separated from each other by dividing the first and second columnar portion forming segments 21, 22 so that the first to fourth columnar portions 71-74 However, the molded product A can be removed without applying an excessive load in the column axis direction, which is a direction extending with the upper and lower base portions 61 and 62 as the base ends.

  Moreover, since the manufactured molded body A has the upper and lower base parts 61 and 62 and the first to fourth columnar parts 71 to 74 formed integrally, the base part and the columnar part are formed separately, Compared with what the columnar part is adhesively fixed to the base part, high bondability can be obtained between them. When the upper and lower base portions 61 and 62 and the first to fourth columnar portions 71 to 74 are formed of the same material, particularly high connectivity can be obtained.

  When the molded body A is used as an impact absorbing member, the upper and lower base portions 61 and 62 are made of polyurethane resin, nylon resin, epoxy resin, phenol resin, thermosetting polyester resin, urea resin, rigid polyethylene resin. It is preferably formed of a material capable of obtaining a hard constituent material having relatively high rigidity, such as a styrene-based tree. The first to fourth columnar parts 71 to 74 are made of foamed polyurethane resin, soft polyethylene resin, foamed polystyrene, natural rubber, isoprene rubber, chloroprene rubber, styrene-butadiene rubber, butadiene rubber, acrylonitrile-butadiene rubber, ethylene-propylene. It is preferably formed of a material capable of obtaining a soft or semi-rigid constituent material having a relatively low rigidity, such as rubber, butyl rubber, and acrylic rubber.

(Embodiment 2)
<Molding mold>
FIG. 6 shows a mold M according to the second embodiment. In addition, the part of the same name as Embodiment 1 is shown with the same code | symbol as Embodiment 1. FIG.

  In this molding die M, the upper die 10 has a flat bottom surface, and is erected so that the base component material holding protrusions 12 extend slightly inward from the centers of the four sides of the outer periphery of the lower surface. ing. Corresponding to the base member holding protrusions 12, protrusion insertion holes 29 are formed in the outer mold pieces 21 a and 22 a and the spacer segments 24 of the first and second columnar part forming segments 21 and 22.

  Similarly, the lower mold 30 has a flat upper surface, and is erected so that the base component holding protrusion 32 extends upward from the center of each of the four sides of the outer periphery of the upper surface. Corresponding to the base member holding protrusions 32, protrusion insertion holes are formed in the outer mold pieces 21 a and 22 a and the spacer segments 24 of the first and second columnar part forming segments 21 and 22.

  Other configurations are the same as those of the mold M according to the first embodiment.

<Method for producing molded body>
Next, the manufacturing method of the molded object A using the said shaping | molding die M is demonstrated.

-Mold preparation step-
First, the mold M is prepared so that the upper mold 10, the middle mold 20 and the lower mold 30 are not stacked. The mold set and release agent of the middle mold 20 are the same as those in the first embodiment.

-Material setting step (base component setting step)-
After the preparation of the forming mold M, as shown in FIG. 7, the lower base constituent member 82 of the rectangular flat plate shape is placed on the lower mold 30 so that the base constituent member holding projection 32 is positioned with the center of each side abutting. Set on top.

  Next, the middle mold 20 is placed on the lower mold 30 so that the base component material holding projections 32 are inserted into corresponding projection insertion holes formed on the lower surface side of the middle mold 20.

  Subsequently, a molding material is set in each of the first to fourth columnar portion forming holes 51 to 54.

  Then, as shown in FIG. 7, after setting the rectangular base plate-like upper base constituent member 81 on the lower surface of the upper mold 10 so that the base constituent member holding projections 12 are positioned in contact with the center of each side, The upper mold 10 is placed on the middle mold 20 so that the base member holding projections 12 are inserted into corresponding projection insertion holes 29 formed on the upper surface side of the middle mold 20.

  Examples of the upper and lower base constituent members 81 and 82 include those formed of nylon resin or urethane resin. The upper and lower base constituent members 81 and 82 may be the same material as the molding material, or may be a different material.

  In this mold M, the upper base constituent material (base constituent material) 81 is sandwiched between the upper mold 10 and the middle mold 20, and the lower base constituent material 82 (other base constituent material) is the middle mold 20. Therefore, the lower surface of the upper die 10 and the upper surface of the middle die 20 form a base portion for setting the base component material in advance, and the lower surface of the middle die 20 And the upper surface of the lower mold 30 constitute another base forming portion for setting another base constituent material in advance, and the upper die 10 constitutes the base forming die and the lower die 30 constitutes the other base forming die, respectively. is doing.

-Molding step-
After the molding material is set, the molding die M is held for a predetermined time under conditions of a predetermined molding temperature and a predetermined molding pressure. At this time, the molding material flows so as to fill the first to fourth columnar portion forming holes 51 to 54, or in addition, the first to fourth are accompanied by a reaction such as condensation, copolymerization, or crosslinking. The columnar portions 71 to 74 are formed and bonded by contacting and curing the upper and lower base constituent members 81 and 82. The molding conditions are the same as in the first embodiment.

  The demolding step is the same as in the first embodiment.

  FIG. 8 shows the manufactured compact A.

  The manufactured molded body A includes an upper base (base) 61 composed of a rectangular flat plate-shaped upper base component 81 and a lower base (other base) 62 composed of a lower base component 82, respectively. 1st to 4th columnar parts 71 to 74 that are interposed between them and are formed in a columnar shape and are arranged in 2 × 2 rows and 2 × 2 columns. The molded body A includes upper and lower base parts 61 and 62 constituted by upper and lower base part constituting materials 81 and 82 set in advance before molding, and first to fourth columnar parts 71 to 74, respectively. These are integrally formed with each other and firmly bonded.

  If the molded object A is manufactured using the shaping | molding die M of this Embodiment 2, with respect to the 1st-4th columnar parts 71-74, they will extend by making each of the upper side and lower side base parts 61 and 62 into a base end. The point that the molded body A can be removed without applying an excessive load in the direction of the column axis, which is the direction, is the same as in the first embodiment.

  Moreover, since the manufactured molded body A is integrally molded with the upper and lower base portions 61 and 62 and the first to fourth columnar portions 71 to 74, the base portion and the columnar shape are formed. Compared with the case where the part is formed separately and the columnar part is bonded and fixed to the base part, high connectivity can be obtained between them.

  Here, by buffing at least the first to fourth columnar portion joining scheduled portions of the upper and lower base constituent members 81, 82 on the uneven surface by sand plasting or sanding to increase the surface roughness Further, it is possible to obtain a higher bonding property with a wide contact area and a physical bonding action. In particular, as shown in FIGS. 9A and 9B, if a large number of recesses having an inner diameter d larger than the opening diameter c are formed on the surfaces of the upper and lower base constituent members 81 and 82, each recess The molding material flows in and hardens, and a large number of fine fitting structures are formed between the upper and lower sides and the first to fourth columnar parts 71 to 74 to obtain a high physical bonding effect. it can. Conversely, even if a large number of convex portions having a larger outer diameter at the distal end than at the proximal end are formed on the surfaces of the upper and lower base constituent members 81 and 82, the same high physical coupling effect is obtained. be able to.

(Embodiment 3)
<Molding mold>
FIG. 10 shows a mold M according to the third embodiment. In addition, the part of the same name as Embodiment 1 and 2 is shown with the same code | symbol as Embodiment 1. FIG.

  In this molding die M, the upper die 10 has four shallow concave portions 13 having the same diameter and corresponding to the first to fourth columnar portion forming holes 51 to 54 of the middle die 20 on the lower surface. ing.

  Similarly, four circular recesses 13 are also formed on the upper surface of the lower mold 30.

  Other configurations are the same as those of the mold M according to the second embodiment.

<Method for producing molded body>
As shown in FIG. 11, the manufacturing method of the molded body A is such that a plurality of pores 83 are formed in each of the first to fourth columnar portion joining scheduled portions as shown in FIG. Is the same as that of the second embodiment except that is used.

  In this case, at the time of molding, the molding material flows so as to fill the first to fourth columnar portion forming holes 51 to 54, or in addition, the first material is accompanied by a reaction such as condensation, copolymerization, or crosslinking. The fourth columnar portions 71 to 74 are formed and bonded by contacting and curing the upper and lower base constituent members 81 and 82, and in addition, the upper and lower base constituent members 81 and 82 are thin. The disk portions 71 a to 74 a that circulate through the holes 83 and fill the circular recesses 13 and are connected to the first to fourth columnar portions 71 to 74 via the pores 83 are arranged on the upper surface side and the lower side of the upper base component 81. It is formed on each of the lower surface sides of the side base constituent members 82.

  FIG. 12 shows the manufactured compact A.

  The manufactured molded body A includes an upper base portion (base portion) 61 constituted by a rectangular flat plate-like upper base portion constituting member 81 and a lower base portion (other base portion) 62 constituted by a lower base portion constituting member 82, respectively. 1st to 4th columnar portions 71 to 74 arranged in a columnar shape, interposed between them, and arranged in 2 × 2 rows and 2 × 2 rows, respectively, and upper base portions each formed in a disk shape Disc portions 71 a to 74 a provided on the upper surface side of 61 and the lower surface side of the lower base portion 62 corresponding to the first to fourth columnar portions 71 to 74, respectively. The molded body A includes upper and lower base parts 61 and 62 constituted by upper and lower base part constituting materials 81 and 82 set in advance before molding, and first to fourth columnar parts 71 to 74, respectively. And the first to fourth columnar parts 71 to 74 are coupled to the disk parts 71a to 74a through the pores 83 of the upper or lower base parts 61 and 62, and the physical Helping the retaining action, they are firmly bonded.

  If the molded object A is manufactured using the shaping | molding die M of this Embodiment 3, with respect to the 1st-4th columnar parts 71-74, they will extend by making each of the upper side and lower side base parts 61 and 62 into a base end. The point that the molded body A can be removed without applying an excessive load in the direction of the column axis, which is the direction, is the same as in the first and second embodiments.

  Further, in the manufactured molded body A, each of the upper and lower base portions 61 and 62 and each of the first to fourth columnar portions 71 to 74 are integrally formed, and in addition, the disk portions 71a to 74a are removed. Because they are firmly bonded with the help of the fastening action, the base and the columnar part are formed separately, and compared with those in which the columnar part is bonded and fixed to the base, the high bondability between them Can be obtained.

  It is possible to obtain even higher connectivity by forming at least the first to fourth columnar portions of the upper and lower base constituent members 81 and 82 on the uneven surface to increase the surface roughness. It is the same as Form 2.

(Other embodiments)
In the first to third embodiments, the molding die M for manufacturing the molded body A in which the first to fourth columnar portions 71 to 74 are interposed between the upper and lower base portions 61 and 62 is used. It may not be made, but a molded object in which a plurality of columnar parts are erected on one side of a single base part may be manufactured. In this case, the molding die may be configured by an upper die and a middle die having a bottomed columnar portion forming hole opened upward.

  In the first to third embodiments, the forming mold M for forming the molded body A having the four columnar portions of the first to fourth columnar portions 71 to 74 is used. If it molds the molded object which has two or more parts, the shaping | molding die using a spacer segment like Embodiment 1-3 can be comprised. However, in the case of a molding die that molds a molded body having two columnar portions, the spacer segment is unnecessary if the two columnar portion forming holes are configured to be divided vertically in common. The configuration of the mold using such a spacer segment is particularly useful for molding a molded body having three or more columnar portions. Specifically, as shown in FIG. 13A, the middle size has first to third columnar portion forming segments 21 to 23 and a pair of spacer segments 24, and the first to sixth columnar portion forming holes 51. The forming mold in which ~ 56 is formed, as shown in FIG. 13B, the middle mold has the first and second columnar part forming segments 21 and 22 and the spacer segment 24, and the first to third columnar part forming As shown in FIG. 13C, a mold having holes 51 to 53, the middle mold has first and second columnar portion forming segments 21 and 22, and a spacer segment 24, and the first to fifth columnar shapes. A molding die in which the part forming holes 51 to 55 are formed may be mentioned.

  In the first to third embodiments, each of the first to fourth columnar portions 71 to 74 has a molding die M that molds the molded body A having a cylindrical shape. It may be used to mold a prism such as a prism, or it may be molded from a mixture of different shapes, and it is not a uniform cross section, but the center part is thicker or thinner than the base end part. May be formed.

  In the second and third embodiments, the lower surface of the upper mold 10 and the upper surface of the middle mold 20 constitute a base forming portion for setting the base component material in advance, and the lower surface of the middle mold 20 and the upper surface of the lower mold 30 are previously formed. Although the other base forming part for setting another base constituent material is configured, it is not particularly limited to this, and the base constituent material is provided on the lower surface side of the upper mold and / or the upper surface side of the middle mold. A concave portion for accommodating a base is formed by forming a concave portion for accommodating, and a concave portion for accommodating another base component is formed on the lower surface side of the middle mold and / or the upper surface side of the lower mold, and the other base forming portion is formed. It may be configured.

  INDUSTRIAL APPLICATION This invention is useful about the shaping | molding die used for shape | molding the molded object by which the 1st and 2nd columnar part stood | installed integrally with the base part mutually spaced apart, and the manufacturing method of a molded object using the same It is.

(A) is a perspective view which shows the state which closed the upper mold | type of the shaping | molding die concerning Embodiment 1, (b) is a perspective view which shows the state which opened the upper mold | type. (A) is a plan view of the middle mold, (b) is a plan view of the upper mold, and (c) is a plan view of the lower mold. FIG. 3 is a sectional view taken along line III-III in FIG. 1. It is a top view which shows the state which the middle type decomposed | disassembled. 2 is a perspective view of a molded body according to Embodiment 1. FIG. It is a perspective view which shows the state which opened the upper mold | type of the shaping | molding die concerning Embodiment 2. FIG. 6 is an explanatory view showing a method for manufacturing a mold according to Embodiment 2. FIG. 5 is a perspective view of a molded body according to Embodiment 2. FIG. (A) And (b) is sectional drawing of an upper side (lower side) base structure material. It is a perspective view which shows the state which opened the upper mold | type of the shaping | molding die concerning Embodiment 3. FIG. FIG. 10 is a plan view of an upper (lower) base constituent member of Embodiment 3. 6 is a perspective view of a molded body according to Embodiment 3. FIG. (A), (b), and (c) are all top views which show the structure in the medium mold | type of other embodiment.

Explanation of symbols

M Mold A Mold 10 Upper mold (base forming mold)
20 Medium size (columnar part forming type)
30 Lower mold (other base forming mold)
21 1st columnar part formation segment 21a, 22a Outer side mold piece 21b, 22b Inner mold piece 22 2nd columnar part formation segment 24 Spacer segment 51 1st columnar part formation hole 52 2nd columnar part formation hole 53 3rd columnar part formation hole 57 Upper base forming part (base forming part)
58 Lower base forming part (other base forming part)
61 Upper base (base)
62 Lower base (other base)
71 First columnar portion 72 Second columnar portion 81 Upper base component (base component)
82 Lower base component (other base components)

Claims (7)

A molding die used for molding a molded body in which the first and second columnar portions are integrally provided with a space between the base portions,
A columnar part forming mold in which first and second columnar part forming holes for forming the first and second columnar parts are respectively formed;
It is provided so as to cover the openings of the first and second columnar part forming holes with respect to the columnar part forming mold, and in combination with the columnar part forming mold, each of the first and second columnar part forming holes is provided. A base-forming mold that constitutes a base-forming part for setting a base-constituting material in advance, or for molding a base with a molding material;
With
The columnar part forming mold is
A first columnar part forming segment comprising a pair of mold pieces, wherein the first columnar part forming hole is formed and divided so as to vertically divide the first columnar part forming hole;
The first columnar part forming segment is provided so as to be arranged on the side of the dividing line, the second columnar part forming hole is formed, and the second columnar part forming part is vertically divided. And the 2nd columnar part formation segment which consists of a pair of mold pieces divided along the division line of the 1st columnar part formation segment,
A spacer segment provided to be sandwiched between the first columnar part forming segment and the second columnar part forming segment;
Mold with mold. In the columnar part forming mold, the first and second columnar part forming holes are formed in the through holes, respectively.
It is provided so as to cover the openings of the first and second columnar part forming holes on the opposite side of the columnar part forming mold with respect to the columnar part forming mold, and in combination with the columnar part forming mold, Further provided with another base forming mold for forming another base forming part for setting another base constituent material in advance or molding another base part, which is continuous with each of the second columnar part forming holes. ,
2. The mold according to claim 1, wherein the mold is used to mold a molded body in which the first and second columnar parts are integrally provided with a space between the base and another base.   3. The mold according to claim 1, wherein the first columnar part forming segment is formed with a third columnar part forming hole that is vertically divided along with the first columnar part forming hole. A method for producing a molded body in which the first and second columnar portions are integrally erected integrally with each other at a base portion using the molding die according to any one of claims 1 to 3. ,
A molding step of setting the molding material in each of the first and second columnar part forming holes and molding the first and second columnar parts;
After the molding step, after removing the spacer segment, the first and second columnar portion forming segments are removed from the mold pieces on the sides of the molded first and second columnar portions, respectively. In addition, a demolding step of dividing the mold and demolding the molded body,
The manufacturing method of the molded object provided with.   The manufacturing method of the molded object described in Claim 4 further equipped with the base part constituent material setting step which sets a base part constituent material beforehand to the said base part formation part before the said shaping | molding step.   The manufacturing method of the molded object described in Claim 5 using what each of the 1st and 2nd columnar part joint plan part was formed in the uneven | corrugated surface as said base part constituent material.   The manufacturing method of the molded object described in any one of Claims 4 thru | or 6 which forms the said base and the said 1st and 2nd columnar part with a different material.

Images