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WO2018047697A1 - Moule pour article moulé en mousse et article moulé en mousse - Google Patents

Moule pour article moulé en mousse et article moulé en mousse Download PDF

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Publication number
WO2018047697A1
WO2018047697A1 PCT/JP2017/031189 JP2017031189W WO2018047697A1 WO 2018047697 A1 WO2018047697 A1 WO 2018047697A1 JP 2017031189 W JP2017031189 W JP 2017031189W WO 2018047697 A1 WO2018047697 A1 WO 2018047697A1
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WO
WIPO (PCT)
Prior art keywords
mold
frame
foam
wall
closing wall
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2017/031189
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English (en)
Japanese (ja)
Inventor
有史 榊原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Kasei Co Ltd
Original Assignee
Sekisui Plastics Co Ltd
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 Sekisui Plastics Co Ltd filed Critical Sekisui Plastics Co Ltd
Publication of WO2018047697A1 publication Critical patent/WO2018047697A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds

Definitions

  • the present invention relates to a mold for a foam molded product for molding a foam molded product having a frame, and a foam molded product.
  • a foam molded article having a frame is known.
  • the foam-molded article described in Patent Literature 1 includes a frame and a foamed resin portion made of a foamed resin.
  • a part of the frame is embedded in the foamed resin part, and the other part of the frame protrudes from the foamed resin part.
  • frame is used as a fastener to the structure (for example, vehicle) to which a foaming molded article is attached, for example.
  • the cracking filling method is a method of filling the pre-expanded beads in a state where a gap (crack) is provided between the convex mold and the concave mold. In this method, the air carrying the pre-expanded beads used at the time of filling is discharged from the gap (crack).
  • the convex mold moves relative to the concave mold.
  • an insertion portion for inserting the protruding portion of the frame is provided in the concave mold.
  • the concave insertion portion communicates the molding space formed between the concave mold and the convex mold with the outside. If the insertion part is not blocked, the pre-expanded beads in the molding space will leak to the outside. Therefore, in the technique described in Patent Document 1, this insertion part is used as a block wall (in the same document, a split mold and holding). Member). The block wall closes the insertion portion while pressing the protruding portion of the frame.
  • the protruding portion of the frame is pressed by the block wall.
  • the protruding portion of the frame may be deformed due to manufacturing variations. If the shape of the projecting portion deviates from the designed shape, the pressing force concentrates on a part of the block wall when the mold is closed, and the block wall may be deteriorated.
  • An object of the present invention is to provide a mold for a foam molded product for molding a foam molded product from which a part of a frame protrudes, and to provide a mold for a foam molded product that is difficult to deteriorate, and a foam molded product.
  • a mold for a foam molded article has a frame and a foamed resin part, a part of the frame is embedded in the foamed resin part, and the other part of the frame is the foamed resin.
  • the mold is constituted by a second mold that is movable relative to the first mold and forms a molding space between the first mold and the insertion portion of the first mold.
  • An opening that communicates the space with the outside includes a closing wall that closes a part of the opening, and the closing wall is in a direction along a moving direction of relative movement of the second mold with respect to the first mold
  • the opening is movable to the flange.
  • a projecting portion extending region extending from the projecting portion of the arm to the upper end of the opening and the lower end of the opening along the moving direction of the second mold. At least a part of the region other than the protruding portion extension region is closed.
  • the opening formed by the insertion part of the first mold is closed by the closing wall.
  • the opening includes a protrusion extension region extending from the protrusion of the frame to the upper end of the opening and the lower end of the opening along the moving direction of the second mold.
  • the closing wall is configured to close at least a part of the region other than the protruding portion extension region in the opening. For this reason, the protrusion part of a flame
  • the said closing wall is provided in the said 2nd metal mold
  • This configuration is an example of the arrangement structure of the closing wall.
  • the insertion part of the first mold has a pair of side surfaces extending along the moving direction of the second mold, and a bottom surface between the pair of side surfaces. The closing wall is biased so that an end surface of the closing wall pushes a bottom surface of the insertion portion. According to this configuration, in the predetermined movement range in which the second mold moves relative to the first mold, the end surface of the closing wall presses the bottom surface of the insertion portion, so that at least a part of the opening extends over the predetermined movement range. Closed.
  • the second mold has a support portion that supports the closing wall so as to be movable, and a pair of side surfaces arranged so as to sandwich the closing wall in the support portion are The slidable contact with each of the pair of side surfaces of the insertion portion.
  • this configuration there is no gap between the side surface of the insertion portion and the side surface of the support portion. For this reason, it is suppressed that the foaming resin which leaks from an opening part enters this clearance gap. Thereby, the resin flash adhering to the metal mold
  • the support part has a guide groove for movably guiding the closing wall, and the guide part has an end face facing the bottom surface of the insertion part of the first mold.
  • a guide groove end of the groove and an arrangement portion where the protruding portion of the frame is arranged are provided.
  • the projecting portion of the frame is positioned by arranging the projecting portion of the frame at the placement portion on the end surface of the support portion. Compared to the case where the frame is supported only by a portion other than the protruding portion, the positional deviation of the protruding portion of the frame is suppressed.
  • the arrangement part on the end face of the support part has an adsorbing part adsorbing the protruding part of the frame. According to this structure, the position shift of the protrusion part of the flame
  • the first mold includes a base portion including an extended surface in which a bottom surface of the insertion portion extends, and the end surface of the closing wall is in contact with the extended surface of the base portion.
  • a contact portion and an arrangement portion where the protruding portion of the frame is arranged are provided.
  • frame is positioned by arrange
  • the extension surface of the base portion has a suction portion that sucks the protruding portion of the frame. According to this structure, the position shift of the protrusion part of the flame
  • the said closing wall is provided in the said 1st metal mold
  • This configuration is an example of the arrangement structure of the closing wall.
  • the insertion portion of the first mold has a pair of side surfaces extending along the moving direction of the second mold, and a bottom surface between the pair of side surfaces,
  • the second mold has an opposing wall facing the bottom surface of the insertion portion, and the closing wall is biased so that an end surface of the closing wall presses the opposing surface of the opposing wall.
  • the end surface of the closing wall presses the opposing surface of the opposing wall. Therefore, at least a part of the opening over the predetermined movement range. Is closed.
  • the opposing wall is inserted through the insertion portion, and the pair of side surfaces of the opposing wall are in sliding contact with the pair of side surfaces of the insertion portion, respectively.
  • the opposing wall is inserted through the insertion portion, there is no gap between the side surface of the insertion portion and the side surface of the opposing wall. For this reason, it is suppressed that the resin which leaks from an opening part enters this clearance gap. Thereby, the resin flash adhering to the metal mold
  • the first mold has a support portion that movably supports the closing wall, and the supporting portion has a guide groove that movably guides the closing wall, and is opposed to the first mold.
  • the facing surface of the wall is provided with an abutting portion with which the end surface of the closing wall abuts and an arrangement portion where the projecting portion of the frame is disposed.
  • frame is positioned by arrange
  • the arrangement portion on the facing surface of the facing wall has a suction portion that sucks the protruding portion of the frame. According to this structure, the position shift of the protrusion part of the flame
  • the first mold includes a support portion that movably supports the closing wall, and the supporting portion is capable of moving the end wall including the bottom surface of the insertion portion and the closing wall. And a guide groove end of the guide groove and an arrangement portion on which the projecting portion of the frame is arranged are provided on the end surface of the support portion.
  • frame is positioned by arrange
  • the arrangement part on the end face of the support part has an adsorbing part adsorbing the protruding part of the frame. According to this structure, the position shift of the protrusion part of the flame
  • the frame has two protrusions arranged at a set distance from each other and extending from the molding space to the outside, and the closing wall is disposed between the two protrusions.
  • the part between two protrusion parts is closed with a closing wall in an opening part.
  • the foam molded product molded by any one of the above molds for foam molded products has the frame and the foamed resin portion, and a part of the frame is embedded in the foamed resin portion.
  • the other part of the frame protrudes as a protruding part from the foamed resin part.
  • the frame has two projecting portions arranged at a set distance from each other and projecting from the foamed resin portion, and the foamed resin portion has a space between the two projecting portions.
  • the two lines extending in a direction perpendicular to the direction in which the two protrusions are arranged, and the two lines extending in the same direction.
  • the line which exists between two protrusion parts can be used as a label
  • the foam molded article includes a frame and a foamed resin portion, and the foamed resin portion includes a first surface, a second surface opposite to the first surface, and the first surface.
  • a side surface connecting one surface and the second surface, a part of the frame is embedded in the foamed resin portion, and the other part of the frame protrudes from the side surface of the foamed resin portion.
  • the two protrusions are arranged at a set distance from each other and protrude from the side surface of the foamed resin portion, and the foamed resin portion includes two protrusions around the two protrusions on the side surface.
  • a line is provided, and the two lines extending from each of the two protrusions are provided between the two protrusions in the foamed resin portion.
  • a line can be used as a label
  • the two lines are two first lines
  • the foamed resin portion further includes a second line
  • the second line is the two first lines. It extends to pass through the end points of each of the lines.
  • a line can be used as a label
  • FIG. 5 is a cross-sectional view taken along line AA in FIG. 4. Sectional drawing which follows the BB line of FIG. Sectional drawing of a closed wall vicinity about the metal mold
  • FIG. 5 is a cross-sectional view taken along line AA in FIG. 4. Sectional drawing which follows the BB line of FIG. Sectional drawing of a closed wall vicinity about the metal mold
  • FIG. 10 is a cross-sectional view taken along line DD in FIG. 9. Sectional drawing of a closed wall vicinity about the metal mold
  • FIG. 12 is a sectional view taken along line EE in FIG. 11. The perspective view of a foaming molded product. The enlarged view near a protrusion part. Sectional drawing of the metal mold
  • the mold apparatus 1 for a foam molded product molds a foam molded product 90 (see FIG. 13) having a frame 91 using pre-expanded beads as a molding material.
  • the mold apparatus 1 for a foam molded article includes a first mold unit 10, a second mold unit 20, and a filling device 24.
  • the first mold unit 10 includes a casing 11, a concave mold 12 (first mold) provided so as to seal the opening 11 a of the casing 11, and a heating / cooling device 13.
  • the housing 11 and the concave mold 12 constitute an internal space SA.
  • the heating / cooling device 13 is accommodated in the internal space SA.
  • the heating / cooling device 13 is configured as a flow path for circulating steam or cooling water.
  • the flow path is provided with an ejection hole through which steam or cooling water is ejected.
  • the concave mold 12 is heated or cooled by steam and cooling water emitted from the ejection holes.
  • the second mold unit 20 includes a casing 21, a convex mold 22 (second mold) provided so as to seal the opening 21 a of the casing 21, and a heating / cooling device 23.
  • the housing 21 and the convex mold 22 constitute an internal space SB.
  • the heating / cooling device 23 is accommodated in the internal space SB.
  • the heating / cooling device 23 is configured as a flow path for circulating steam or cooling water.
  • the flow path is provided with an ejection hole through which steam or cooling water is ejected.
  • the convex mold 22 is heated or cooled by steam and cooling water emitted from the ejection holes.
  • the convex mold 22 and the concave mold 12 are components of the mold 30 for foam molded products.
  • a molding space SP for molding the foam molded product 90 is formed between the convex mold 22 and the concave mold 12.
  • a communication path 12d that allows the molding space SP to communicate with the outside.
  • Either one of the convex mold 22 and the concave mold 12 or both molds are supported by a unit moving device so that one mold moves relative to the other mold.
  • the mold closed state which is a state when the foam molded product 90 is molded
  • the convex mold 22 and the concave mold 12 are spaced apart from each other due to the arrangement in the mold closed state.
  • There are a cracking state (see FIG. 2) in which a gap CL (crack) is provided and a mold opening state in which the convex mold 22 and the concave mold 12 are separated so that the frame 91 can be arranged.
  • the opening end 12e near the molding space SP in the communication path 12d is closed by the side wall 22b of the convex mold 22 when the foam molded product mold 30 is in the mold closed state, and the foam molded product mold 30 is in the cracked state.
  • the convex mold 22 opens due to relative movement.
  • the width (length in the short direction) of the gap CL formed by the opening end 12e near the molding space SP in the communication path 12d is set to a length that prevents the pre-expanded beads from coming out.
  • the filling device 24 includes a main body 24a for sending the pre-expanded beads to the molding space SP by being put on the flow of a transport medium (for example, air), and a transport path 24b for guiding the pre-expanded beads to the molding space SP.
  • the conveyance path 24 b is disposed so as to pass through the internal space SA of the first mold unit 10.
  • the second mold unit 20 moves relative to the first mold unit 10.
  • the movement direction of the convex mold 22 accompanying the relative movement of the second mold unit 20 with respect to the first mold unit 10 is simply referred to as “movement direction DT of the convex mold 22”.
  • the convex mold side indicates the side where the main wall 22a of the convex mold 22 exists in the foam molded article mold 30
  • the concave mold side indicates the mold for the foam molded article.
  • 30 shows the side where the main wall 12a of the concave mold 12 is present.
  • the foam molded product mold 30 is set in a cracking state. Next, in this state, pre-expanded beads are filled. At this time, the transport medium is discharged from the communication path 12d. After filling the pre-expanded beads, the foam molded product mold 30 is set in the mold closed state and heated by steam ejected from the heating / cooling devices 13 and 23. As a result, the pre-expanded beads are foamed and fused. Then, the mold 30 for foam molded products is cooled by the cooling water ejected from the heating and cooling devices 13 and 23, and the mold is opened. Then, the foam molded product 90 is taken out from the mold 30 for the foam molded product that has been opened.
  • the foam molded product mold 30 will be described in detail with reference to FIGS.
  • the foam-molded product mold 30 molds a foam-molded product 90 (see FIG. 13) in which a part of the frame 91 protrudes from the foamed resin portion 95.
  • the mold 30 for the foam molded product is manufactured by the manufacturing method as described above, that is, after filling the pre-expanded beads, one of the concave mold 12 and the convex mold 22 is moved relative to the other, whereby the foam molded product 90 is moved. It can be used in a manufacturing method for molding.
  • FIG. 3 schematically shows a mold 500 for a foamed molded product of a reference example.
  • the foam molded product mold 500 includes a concave mold 512, a convex mold 522, and a closing wall 550 that closes an opening 545 described later.
  • the convex mold 522 is fitted into the concave mold 512.
  • the side wall 522b of the convex mold 522 is in sliding contact with the side wall 512b of the concave mold 512.
  • the recessed mold 512 is provided with an insertion portion 513 extending from the end surface 512f of the side wall 512b.
  • a portion surrounded by the insertion portion 513 of the concave mold 512 and the side wall 522b of the convex mold 522 (hereinafter referred to as “opening 545”) allows the molding space SP to communicate with the outside.
  • the protruding portion 593 of the frame 591 is arranged as follows with respect to the concave mold 512. That is, the main body portion of the frame 591 is disposed in the molding space SP, and the protruding portion 593 of the frame 591 is exposed to the outside from the opening portion 545, and the bottom surface 515 of the base portion 514 provided at the lower end of the insertion portion 513. Placed in. In the cracking state and the mold closing state, the closing wall 550 closes the opening 545 so as to press the protrusion 593.
  • the closing wall 550 is biased by a biasing member 560 (for example, a coil spring). Accordingly, the opening 545 is closed by the closing wall 550 while the convex mold 522 moves between the cracking state and the mold closing state.
  • a biasing member 560 for example, a coil spring
  • the protruding portion 593 of the frame 591 is pressed by the closing wall 550.
  • the projecting portion 593 of the frame 591 is deformed so as to deviate from the design reference dimension (hereinafter, when the frame 591 is deformed)
  • the pressing force is concentrated on a part of the closing wall 550,
  • the closing wall 550 deteriorates, and the deterioration may cause the closing wall 550 to be partially missing or deformed.
  • the projecting portion 593 is pressed against the closing wall 550, whereby the main body portion (other than the projecting portion 593) of the frame 591 is made with respect to the outer shape of the foamed resin portion of the foam molded product. It arrange
  • the protruding portion 593 of the frame 591 becomes the closed wall 550.
  • the entire frame 591 is deformed by being pressed, and the entire frame 591 is molded in a deformed state. As a result, stress remains in the foamed molded product.
  • the foam molded article 90 has a frame 91 made of metal (for example, iron, copper, aluminum alloy) or resin (resin having higher rigidity than the foamed resin portion 95).
  • the frame 91 includes a main body 92 and two projecting portions 93 that extend from the main body 92 and project from the foamed resin portion 95.
  • the two protrusions 93 are arranged at a set distance apart, connected at the tip, and have a U-shape as a whole.
  • connection indicates a connection on the outer shape, and one protrusion 93 continuously extends to the other protrusion 93 (for example, a metal rod is connected). This is a concept including connection by connection, connection by simple contact, and the like.
  • the foam-molded product mold 30 includes a concave mold 12 as a first mold, a convex mold 22 as a second mold, and a closing wall 50 that closes the opening 45.
  • the concave mold 12 includes a main wall 12a and a side wall 12b surrounding the main wall 12a.
  • the concave mold 12 is provided with the communication path 12d described above.
  • the concave mold 12 is provided with an insertion portion 40 through which the two protrusions 93 of the frame 91 are inserted.
  • the insertion portion 40 extends from the end surface 12f of the side wall 12b of the concave mold 12 toward the lower side of the concave mold 12 (main wall 12a). That is, the insertion part 40 is provided so as to cut out a part of the side wall 12b.
  • the insertion part 40 has a pair of side surfaces 41 along the movement direction DT of the convex mold 22 and a bottom surface 42 disposed between the pair of side surfaces 41.
  • the bottom surface 42 of the insertion portion 40 is disposed closer to the main wall 12a of the concave mold 12 than the protrusion 93 of the frame 91 in the movement direction DT of the convex mold 22.
  • the convex mold 22 includes a main wall 22a and a side wall 22b surrounding the main wall 22a.
  • the side wall 22b of the convex mold 22 is disposed inside the side wall 12b of the concave mold 12 and is in sliding contact with the side wall 12b.
  • the convex mold 22 moves relative to the concave mold 12.
  • the opening 45 (see FIG. 5) is configured by the insertion portion 40 of the concave mold 12 and the side wall 22b of the convex mold 22.
  • the opening 45 is surrounded by the pair of side surfaces 41 and the bottom surface 42 of the insertion portion 40 and the lower surface of the side wall 22b of the convex mold 22 (that is, the end of the lower surface 22d of the main wall 22a).
  • the two protrusions 93 of the frame 91 pass through the opening 45 and exit to the outside (see FIG. 5).
  • the closing wall 50 closes a part of the opening 45. This is to prevent the pre-expanded beads from leaking to the outside from the opening 45 or to suppress the leakage amount when the pre-expanded beads are filled in the molding space SP in the cracked state. Moreover, it is for suppressing that a foaming resin flows out of the opening part 45 at the time of shaping
  • the closing wall 50 is attached to the convex mold 22 so as to be movable in a direction along the movement direction DT of the convex mold 22. Then, the closing wall 50 closes at least a part other than the area AR extending before and after the protruding portion 93 of the frame 91 in the moving direction DT of the convex mold 22. In other words, as shown in FIG. 6, the opening 45 extends from the protrusion 93 of the frame 91 to the upper end of the opening 45 and the lower end of the opening 45 along the moving direction DT of the convex mold 22.
  • the area AR is included.
  • the upper end of the opening 45 corresponds to the lower surface 22 d of the convex mold 22, and the lower end of the opening 45 corresponds to the bottom surface 42 of the insertion part 40.
  • the pair of projecting portion extension regions AR are located in regions close to the pair of side surfaces 41 in the opening 45, and extend along the pair of side surfaces 41.
  • Each of the protruding portion extension areas AR has the same width as the width of the cross section of the protruding portion 93 (the width along the direction orthogonal to the moving direction DT on the cross section of the protruding portion 93 shown in FIG. 6). It extends along DT.
  • the closing wall 50 closes at least a part of the region other than the protruding portion extension region AR in the opening 45.
  • the surface 52 near the molding space SP in the closed wall 50 is substantially flush with the outer surface 22 c of the side wall 22 b of the convex mold 22. It is preferable that a C surface (chamber surface) 53 is provided at a corner of the end surface 51 of the closing wall 50.
  • the closing wall 50 is movably supported by the support portion 60.
  • the support part 60 is provided on the outer surface of the side wall 22b of the convex mold 22 and extends along the moving direction DT of the convex mold 22.
  • the support part 60 is inserted through the insertion part 40.
  • the end surface 66 of the support portion 60 faces the bottom surface 42 of the insertion portion 40.
  • a pair of side surfaces 61 (outer side surfaces 61) arranged so as to sandwich the closing wall 50 in the support portion 60 are in sliding contact with the pair of side surfaces 41 of the insertion portion 40.
  • the support portion 60 includes a support main body portion 62 and a pair of support walls 63 that support the closing wall 50 therebetween.
  • the pair of support walls 63 and the support main body 62 constitute a guide groove 64 that guides the closing wall 50.
  • the guide groove 64 extends along the movement direction DT of the convex mold 22.
  • the closing wall 50 is inserted into the guide groove 64 so as to be movable along the moving direction DT of the convex mold 22.
  • An urging member 65 (for example, a coil spring) that urges the closing wall 50 is disposed inside the guide groove 64, and the closing wall 50 is directed from the convex mold 22 toward the concave mold 12 by the urging member 65. Be energized by.
  • the side surface 54 of the closing wall 50 is in sliding contact with the inner surface of the support wall 63 (the surface constituting the guide groove 64).
  • the end surface 51 of the closing wall 50 is in contact with the bottom surface 42 of the insertion part 40.
  • the closing wall 50 continues to press the bottom surface 42 of the insertion portion 40 while the foam molded product mold 30 is in a predetermined state from the cracking state to the mold closing state by the urging force of the urging member 65.
  • the end surface 66 of the support portion 60 is disposed where the protruding portion 93 of the frame 91 protrudes.
  • the end surface 66 of the support portion 60 is provided with a guide groove end 64a of the guide groove 64 and an arrangement portion 67 where the protruding portion 93 of the frame 91 is disposed.
  • the arrangement portion 67 is arranged around the guide groove end 64a.
  • the placement portion 67 is provided with a suction portion 68 that sucks the protruding portion 93 of the frame 91.
  • the attracting unit 68 is made of a magnet, for example.
  • the opening 45 is surrounded by the pair of side surfaces 41 and the bottom surface 42 of the insertion portion 40 and the lower surface of the side wall 22b of the convex mold 22 (that is, the end of the lower surface 22d of the main wall 22a).
  • the support part 60 is inserted through the insertion part 40 and closes a part of the opening 45.
  • the opening 45 includes the protrusion extension region AR extending from the protrusion 93 of the frame 91 to the upper end of the opening 45 and the lower end of the opening 45 along the moving direction DT of the convex mold 22. It is out.
  • the closing wall 50 closes a region other than the protruding portion extension region AR in the opening 45.
  • frame 91 is arrange
  • the mold 30 for foam molded articles having the above-described configuration has the following action. Between the cracking state and the mold closing state, the closing wall 50 presses the bottom surface 42 of the insertion portion 40 and closes the opening 45. In addition, at least a part of the protruding portion extension area AR opens from the cracking state to the mold closing state. For this reason, no pressing force is applied to the protruding portion 93 of the frame 91.
  • the closing wall 50 is movable in a direction along the moving direction DT of the convex mold 22 (second mold).
  • the opening 45 includes a protrusion extension area AR extending from the protrusion 93 of the frame 91 to the upper end of the opening 45 and the lower end of the opening 45 along the movement direction DT of the convex mold 22.
  • the closing wall 50 closes at least a part of the region other than the protruding portion extension region AR in the opening 45. For this reason, the opening 45 is closed by the closing wall 50.
  • the closing wall 50 is comprised so that at least one part of area
  • the “at least part of the region other than the protruding portion extension region AR in the opening 45” may be the entire region other than the protruding portion extension region AR in the opening 45, or other than the protruding portion extension region AR.
  • region may be sufficient.
  • the closing wall 50 is urged so that the end surface 51 pushes the bottom surface 42 of the insertion portion 40 of the concave mold 12. According to this configuration, since the end surface 51 of the closing wall 50 presses the bottom surface 42 of the insertion portion 40 in the predetermined movement range in which the convex mold 22 relatively moves, at least a part of the opening 45 continues to be closed over the predetermined movement range. It is done.
  • the mold 30 for a foam-molded product has a support portion 60 that supports the closing wall 50.
  • the pair of side surfaces 61 of the support portion 60 are in sliding contact with the pair of side surfaces 41 of the insertion portion 40, respectively. According to this configuration, there is no gap between the side surface 41 of the insertion portion 40 and the side surface 61 of the support portion 60. For this reason, it is suppressed that the foaming resin which leaks from the opening part 45 enters this clearance gap. Thereby, it is possible to suppress the resin beam from adhering to the mold 30 for the foam molded product.
  • the end face 66 of the support part 60 is provided with an arrangement part 67 where the protruding part 93 of the frame 91 is arranged. According to this configuration, the protruding portion 93 of the frame 91 is positioned. Compared to the case where the frame 91 is supported only by the portion of the frame 91 other than the protruding portion 93, the positional deviation of the protruding portion 93 of the frame 91 is suppressed.
  • the arrangement portion 67 in the support portion 60 has an adsorption portion 68 that adsorbs the protruding portion 93 of the frame 91. According to this configuration, the positional deviation of the protruding portion 93 of the frame 91 in the foamed resin portion 95 is suppressed.
  • the suction portion 68 is formed as a suction hole connected to a decompression device, for example.
  • FIG. 7 is a cross-sectional view taken along a line corresponding to the line AA in FIG. 4 in the foam molded product mold 130 according to the present embodiment.
  • the foam-molded product mold 130 is a mold for molding a foam-molded product 90 (see FIG. 13) in which a part of the frame 91 protrudes from the foamed resin portion 95, and the foam-molded product according to the first embodiment. It has the same use as the product mold 30.
  • the difference between the foam-molded product mold 130 according to the present embodiment and the foam-molded product mold 30 according to the first embodiment is that the opening 145 through which the two protruding portions 93 of the frame 91 are inserted is closed. It is in a closed structure. Hereinafter, this difference will be described.
  • the projecting portion 93 of the frame 91 is disposed on the placement portion 67 of the support portion 60 that supports the closing wall 50, but in this embodiment, the projection portion 93 is disposed on the bottom surface 142 of the insertion portion 140 of the concave mold 112.
  • the insertion portion 140 of the concave mold 112 A part is closed by the side wall 122b of the convex mold 122, and the other part is opened.
  • the insertion portion 140 of the concave mold 112 and the side wall 122b of the convex mold 122 constitute an opening 145. Opening 145 is surrounded by the pair of side surfaces 141 and bottom surface 142 of insertion portion 140 and the lower surface of side wall 122b of convex mold 122 (that is, the end of lower surface 122d of main wall 122a).
  • the two protrusions 93 of the frame 91 pass through the opening 145 and exit to the outside (see FIG. 7).
  • the opening 145 is closed by the closing wall 150.
  • the support part 160 is provided in the convex mold
  • a biasing member 165 that biases the closing wall 150 is accommodated in the support portion 160.
  • the concave mold 112 is provided with a base 114 for placing the protruding portion 93 of the frame 91.
  • the base 114 is provided so as to protrude from the periphery of the insertion part 140 on the side wall 112 b of the concave mold 112.
  • the base part 114 has an extended surface 142 x extending from the bottom surface 142 of the insertion part 140.
  • the extended surface 142x of the base 114 is disposed where the protruding portion 93 of the frame 91 protrudes.
  • the extension surface 142x of the base 114 is provided with an abutment portion 142a where the end surface 151 of the closing wall 150 abuts and an arrangement portion 142b where the protruding portion 93 of the frame 91 is disposed.
  • the extension surface 142x is provided with a suction portion 168 that sucks the protruding portion 93 of the frame 91.
  • the frame 91 is made of a ferromagnetic material (such as iron)
  • the attracting unit 168 is made of, for example, a magnet.
  • the opening 145 is surrounded by the pair of side surfaces 141 and the bottom surface 142 of the insertion portion 140 and the lower surface of the side wall 122b (that is, the end of the lower surface 122d of the main wall 122a).
  • the support part 160 is inserted into the insertion part 140 and closes a part of the opening 145.
  • the closing wall 150 closes a portion of the opening 145 other than the region AR that extends in the front-rear direction of the protruding portion 93 of the frame 91 in the moving direction DT of the convex mold 122.
  • the opening 145 extends from the protrusion 93 of the frame 91 to the upper end of the opening 145 and the lower end of the opening 145 along the moving direction DT of the convex mold 122.
  • the area AR is included.
  • the upper end of the opening 45 corresponds to the lower surface 122 d of the convex mold 122
  • the lower end of the opening 145 corresponds to the bottom surface 142 of the insertion portion 140.
  • the pair of projecting portion extension regions AR are located in regions adjacent to the pair of side surfaces 141 in the opening 145 and extend along the pair of side surfaces 141.
  • Each of the protruding portion extension areas AR has the same width as the width of the cross section of the protruding portion 93 (the width along the direction perpendicular to the moving direction DT on the cross section of the protruding portion 93 shown in FIG. 8), and the moving direction. It extends along DT.
  • the closing wall 150 closes at least a part of the region other than the protruding portion extension region AR in the opening 145.
  • frame 91 is arrange
  • the foam molded product mold 130 according to the present embodiment has effects similar to the above (1) to (3) based on the same configuration as that of the first embodiment.
  • the concave mold 112 has a base 114.
  • the base 114 has an extended surface 142 x that is a surface obtained by extending the bottom surface 142 of the insertion portion 140.
  • the extended surface 142x is provided with an abutting portion 142a where the end surface 151 of the closing wall 150 abuts and an arrangement portion 142b where the protruding portion 93 of the frame 91 is disposed.
  • the projecting portion 93 of the frame 91 is positioned by arranging the projecting portion 93 of the frame 91 on the disposing portion 142 b on the extended surface 142 x of the base 114. For this reason, as compared with the case where the frame 91 is supported only by a portion other than the protruding portion 93, the positional deviation of the protruding portion 93 of the frame 91 is suppressed.
  • FIG. 9 is a cross-sectional view taken along a line corresponding to the AA line of FIG. 4 in the foam molded product mold 230 according to the present embodiment.
  • the foam-molded product mold 230 is a mold for molding the foam-molded product 90 (see FIG. 13) in which a part of the frame 91 protrudes from the foamed resin portion 95, and is foam-molded according to the first embodiment. It has the same use as the product mold 30.
  • the difference between the foam molded product mold 230 according to the present embodiment and the foam molded product mold 30 according to the first embodiment is that the opening 245 through which the two protrusions 93 of the frame 91 are inserted is closed. It is in a closed structure. Hereinafter, this difference will be described.
  • the support portion 60 that supports the closing wall 50 is provided on the convex mold 22.
  • the support portion 260 that supports the closing wall 250 is provided in the concave mold 212.
  • the concave mold 212 is provided with an insertion portion 240 through which the protruding portion 93 of the frame 91 is inserted.
  • a bottom surface 242 of the insertion portion 240 (at the same position as an end surface of a support portion 260 described later) is disposed closer to the main wall 212a of the concave mold 212 than the protruding portion 93 of the frame 91 in the movement direction DT of the convex mold 222.
  • the convex mold 222 is provided with an opposing wall 214 that faces the bottom surface 242 of the insertion part 240 of the concave mold 212.
  • the facing wall 214 includes a facing portion 214a that faces the bottom surface 242 of the insertion portion 240, and a connection portion 214b that connects the facing portion 214a and the side wall 222b of the convex mold 222 (see FIG. 9).
  • the facing wall 214 is inserted through the insertion portion 240.
  • the facing surface 215 of the facing wall 214 faces the bottom surface 242 of the insertion part 240.
  • the pair of side surfaces 216 of the opposing wall 214 are in sliding contact with the pair of side surfaces 241 of the insertion portion 240, respectively (see FIG. 10).
  • the convex mold 222 when the convex mold 222 is fitted into the concave mold 212, a part of the insertion part 240 of the concave mold 212 is closed by the side wall 222b of the convex mold 222, and the other part is opened.
  • the insertion portion 240 of the concave mold 212 and the facing wall 214 of the convex mold 222 constitute an opening 245.
  • the opening 245 is surrounded by a pair of side surfaces 241 and a bottom surface 242 of the insertion portion 240 and an opposing wall 214 provided on the side wall 222 b of the convex mold 222.
  • the two protrusions 93 of the frame 91 pass through the opening 245 and exit to the outside (see FIG. 9).
  • the closing wall 250 closes a part of the opening 245. Specifically, the closing wall 250 is attached to the concave mold 212 so as to be movable in a direction along the movement direction DT of the convex mold 222. Then, the closing wall 250 closes at least a part other than the region AR extending in the front-rear direction of the protrusion 93 of the frame 91 in the moving direction DT of the convex mold 22. In other words, as shown in FIG. 10, the opening 245 extends from the protrusion 93 of the frame 91 to the upper end of the opening 245 and the lower end of the opening 245 along the moving direction DT of the convex mold 222.
  • the area AR is included.
  • the upper end of the opening 245 corresponds to the lower surface (opposing surface 215) of the convex mold 222, and the lower end of the opening 245 corresponds to the upper surface of the main wall 212a.
  • the pair of projecting portion extension regions AR are located in regions adjacent to the pair of side surfaces 241 in the opening 245 and extend along the pair of side surfaces 241.
  • Each of the protruding portion extension areas AR has the same width as the width of the cross section of the protruding portion 93 (the width along the direction perpendicular to the moving direction DT on the cross section of the protruding portion 93 shown in FIG. 10), and the moving direction. It extends along DT.
  • the closing wall 250 closes at least a part of the region other than the protruding portion extension region AR in the opening 245.
  • the closing wall 250 is movably supported by the support portion 260.
  • the support portion 260 is provided on the outer surface of the side wall 212b of the concave mold 212 and extends along the moving direction DT of the convex mold 222.
  • the support part 260 includes a support main body part 262 and a pair of support walls 263 that support the closing wall 250 so as to sandwich it.
  • the pair of support walls 263 and the support main body portion 262 constitute a guide groove 264 that guides the closing wall 250.
  • the guide groove 264 extends along the moving direction DT of the convex mold 222.
  • a closing wall 250 is inserted into the guide groove 264 so as to be movable along the moving direction DT of the convex mold 222.
  • An urging member 265 (for example, a coil spring) that urges the closing wall 250 is disposed inside the guide groove 264, and the closing wall 250 is moved in the direction from the concave mold 212 toward the convex mold 222 by the urging member 265. Be energized by. The end surface 251 of the closing wall 250 contacts the facing surface 215 of the facing wall 214. The closing wall 250 continues to press the facing surface 215 of the facing wall 214 while the foam molded product mold 30 is in a predetermined state from the cracking state to the mold closing state by the urging force of the urging member 265. .
  • urging member 265 for example, a coil spring
  • the facing surface 215 of the facing wall 214 is disposed where the projecting portion 93 of the frame 91 projects.
  • the facing surface 215 of the facing wall 214 is provided with an abutting portion 215a with which the end surface 251 of the closing wall 250 abuts and an arrangement portion 215b where the protruding portion 93 of the frame 91 is disposed.
  • the arrangement part 215b is arranged around the contact part 215a.
  • the opposing surface 215 is provided with a suction portion 268 that sucks the protruding portion 93 of the frame 91.
  • the attracting unit 268 is made of, for example, a magnet.
  • the opening 245 is surrounded by a pair of side surfaces 241 and a bottom surface 242 of the insertion portion 240 and an opposing wall 214 provided on the side wall 222 b of the convex mold 222.
  • the facing wall 214 is inserted into the insertion portion 240. Further, as described above, the opening 245 has the protruding portion extension region AR extending from the protruding portion 93 of the frame 91 to the upper end of the opening 245 and the lower end of the opening 245 along the moving direction DT of the convex mold 222. Contains.
  • the closing wall 250 closes a region other than the protruding portion extension region AR in the opening 245.
  • frame 91 is arrange
  • the foam molded product mold 230 according to the present embodiment has an effect according to (1) shown in the first embodiment based on the same configuration as the first embodiment, and further has the following effects. Have.
  • the convex mold 222 (second mold) has an opposing wall 214 facing the bottom surface 242 of the insertion portion 240.
  • the closing wall 250 is provided in the concave mold 212, and is biased so that the end surface 251 of the closing wall 250 pushes the facing surface 215 of the facing wall 214. According to this configuration, in the predetermined movement range in which the convex mold 222 moves relative to the concave mold 212, the end surface 251 of the closing wall 250 presses the opposing surface 215 of the opposing wall 214. At least a portion is closed.
  • the opposing wall 214 is inserted into the insertion portion 240, and the pair of side surfaces 216 of the opposing wall 214 are in sliding contact with the pair of side surfaces 241 of the insertion portion 240, respectively.
  • the opposing wall 214 is inserted through the insertion portion 240, there is no gap between the side surface 241 of the insertion portion 240 and the side surface 216 of the opposing wall 214. For this reason, it is suppressed that the resin which leaks from the opening part 245 enters this clearance gap. Thereby, it is possible to prevent the resin beam from adhering to the mold 230 for the foam molded product.
  • the abutting portion 215a with which the end surface 251 of the closing wall 250 abuts and the projecting portion 93 of the frame 91 are disposed on the facing surface 215 of the facing wall 214. 215b.
  • the projecting portion 93 of the frame 91 is positioned by arranging the projecting portion 93 of the frame 91 on the disposing portion 215b on the facing surface 215 of the facing wall 214. Further, as compared with the case where the frame 91 is supported only by a portion other than the protruding portion 93, the positional deviation of the protruding portion 93 of the frame 91 is suppressed.
  • the disposition portion 215 b on the facing surface 215 of the facing wall 214 has a suction portion 268 that sucks the protruding portion 93 of the frame 91. According to this configuration, the positional deviation of the protruding portion 93 of the frame 91 in the foamed resin portion 95 is suppressed.
  • FIG. 11 is a cross-sectional view taken along a line corresponding to the line AA in FIG. 4 in the foam molded product mold 330 according to the present embodiment.
  • the foam molded product mold 330 is obtained by changing a part of the foam molded product mold 30 according to the third embodiment.
  • the foam-molded product mold 330 is a mold for molding a foam-molded product 90 (see FIG. 13) in which a part of the frame 91 protrudes from the foamed resin portion 95, and is a foam-molded product according to the third embodiment. It has the same use as the product mold 230.
  • the difference between the foam-molded product mold 330 according to the present embodiment and the foam-molded product mold 230 according to the third embodiment is that the opening 345 through which the two protruding portions 93 of the frame 91 are inserted is closed. It is in a closed structure. Hereinafter, this difference will be described.
  • the protruding portion 93 of the frame 91 is disposed on the disposition portion 215b of the facing wall 214 that faces the bottom surface 242 of the insertion portion 240.
  • the protruding portion 93 of the frame 91 is disposed on the support portion 360 that supports the closing wall 350.
  • the opening 345 is configured by the insertion part 340 of the concave mold 312 and the opposing wall 314 (see below) of the convex mold 322.
  • the opening 345 is surrounded by the pair of side surfaces 341 and the bottom surface 342 of the insertion portion 340 and the lower surface of the opposing wall 314 of the side wall 322b of the convex mold 322.
  • the two protrusions 93 of the frame 91 pass through the opening 345 and exit to the outside (see FIG. 11).
  • the opening 345 is closed by a closing wall 350 supported by the support 360.
  • the support part 360 is provided in the concave mold 312 as in the third embodiment.
  • a biasing member 365 that biases the closing wall 350 is accommodated in the support portion 360.
  • the convex mold 322 is provided with an opposing wall 314 that faces the bottom surface 342 of the insertion part 340 of the concave mold 312.
  • the opposing wall 314 extends along the movement direction DT of the convex mold 322.
  • the facing surface 315 facing the closing wall 350 in the facing wall 314 is disposed closer to the main wall 312a of the concave mold 312 than the lower surface 322d of the main wall 322a.
  • the opposing wall 314 is inserted through the insertion part 340.
  • the facing surface 315 of the facing wall 314 faces the bottom surface 342 of the insertion portion 340, and the end surface 351 of the closing wall 350 is pressed against it.
  • the pair of side surfaces 316 of the opposing walls 314 are in sliding contact with the pair of side surfaces 341 of the insertion portion 340, respectively.
  • the end surface 366 of the support portion 360 is disposed where the protruding portion 93 of the frame 91 protrudes.
  • An end surface 366 of the support portion 360 (in this embodiment, the same as the bottom surface 342 of the insertion portion 340) is provided with a guide groove end 364a of the guide groove 364 and an arrangement portion 367 where the protruding portion 93 of the frame 91 is disposed. It is done.
  • the arrangement portion 367 is arranged around the guide groove end 364a.
  • the placement portion 367 is provided with a suction portion 368 that sucks the protruding portion 93 of the frame 91.
  • the frame 91 is made of a ferromagnetic material (such as iron)
  • the attracting unit 368 is made of a magnet, for example.
  • the opening 345 is surrounded by the pair of side surfaces 341 and the bottom surface 342 of the insertion portion 340 and the lower surface of the opposing wall 314 of the side wall 322b.
  • the opposing wall 314 is inserted into the insertion part 340.
  • the closing wall 350 closes a portion of the opening 345 other than the region AR extending before and after the protruding portion 93 of the frame 91 in the moving direction DT of the convex mold 322.
  • the opening 345 extends from the protrusion 93 of the frame 91 to the upper end of the opening 345 and the lower end of the opening 345 along the moving direction DT of the convex mold 322.
  • the area AR is included.
  • the upper end of the opening 345 corresponds to the lower surface (opposing surface 315) of the convex mold 322, and the lower end of the opening 345 corresponds to the upper surface of the main wall 312a.
  • the pair of projecting portion extension regions AR are located in regions close to the pair of side surfaces 341 in the opening 345 and extend along the pair of side surfaces 341.
  • Each of the protruding portion extension areas AR has the same width as the width of the cross section of the protruding portion 93 (the width along the direction orthogonal to the moving direction DT on the cross section of the protruding portion 93 shown in FIG. 12). It extends along DT.
  • the closing wall 350 closes a region other than the protruding portion extension region AR in the opening 345.
  • frame 91 is arrange
  • the foam-molded product mold 330 according to the present embodiment has effects similar to the above (1) and (2) based on the same configuration as that of the third embodiment, and further has the following effects.
  • the concave mold 312 has a support portion 360 that supports the closing wall 350 so as to be movable.
  • the end surface 366 of the support portion 360 is provided with a guide groove end 364a of the guide groove 364 and an arrangement portion 367 where the protruding portion 93 of the frame 91 is disposed.
  • the projecting portion 93 of the frame 91 is positioned by arranging the projecting portion 93 of the frame 91 on the arranging portion 367 on the end surface 366 of the support portion 360. Compared to the case where the frame 91 is supported only by a portion other than the protruding portion 93, the positional deviation of the protruding portion 93 of the frame 91 is suppressed.
  • the foamed molded product 90 has a frame 91 and a foamed resin portion 95.
  • a main body 92 that is a part of the frame 91 is embedded in the foamed resin portion 95.
  • Two projecting portions 93 that are a part of the frame 91 project from the foamed resin portion 95.
  • the two protrusions 93 are arranged so as to be separated by a set distance.
  • the frame 91 is made of metal (for example, iron, copper, aluminum alloy) or a resin having higher rigidity than the foamed resin portion 95.
  • the foamed resin portion 95 has a first surface 95a, a second surface 95b, and a side surface 95c that connects the first surface 95a and the second surface 95b.
  • the protruding portion 93 of the frame 91 protrudes from the side surface 95c.
  • a first direction DA which is a direction along the side surface 95c and intersects the first direction DA (in the first direction DA).
  • the orthogonal direction is defined as the second direction DB.
  • the opening 45 extends from the protrusion 93 of the frame 91 along the moving direction DT of the convex mold 22 and the opening 45.
  • region AR extended to the lower end of this is included.
  • the closing wall 50 closes the region of the opening 45 other than the protruding portion extension region AR.
  • the end surface 51 of the closing wall 50 passes between the two protrusions 93 and contacts the bottom surface 42 of the insertion part 40 of the concave mold 12.
  • the line comprised by the closing wall 50 and the concave mold 12 is comprised as follows.
  • the lines include two first lines 96a, one second line 96b, and two third lines 96c.
  • FIG. 14 shows a first line 96a, a second line 96b, and a third line 96c.
  • the two first lines 96 a are lines corresponding to the side surface 54 of the closing wall 50 and are disposed between the two protrusions 93. Further, the two first lines 96a both extend in the same direction along the first direction DA from the protruding portion 93. For example, the first line extends in a direction perpendicular to the direction in which the two protrusions 93 are arranged.
  • the second line 96b is a parting line by a mold (convex type, concave type) or a line corresponding to the end face 51 of the closing wall 50.
  • the second line 96b extends from the protrusion 93 in the second direction DB intersecting the first direction DA, and extends through the end point of the first line 96a. That is, the first line 96a and the second line 96b intersect the T shape.
  • the second line 96b is arranged at a position shifted by a predetermined distance from a center line CNL connecting the center points of the two protrusions 93 in a direction perpendicular to the direction in which the two protrusions 93 are arranged. That is, the second line 96b is provided between the portion of the side surface 95c where the protruding portion 93 protrudes and the boundary line 95d between the side surface 95c and the second surface 95b (or the first surface 95a).
  • the third line 96c is a parting line using a mold.
  • the third line 96c is a line corresponding to the side surface 41 of the insertion part 40 of the concave mold 12, and is arranged outside the protrusion part 93 in the direction in which the protrusions 93 are arranged, and from each of the two protrusion parts 93 in the first direction DA. Extending along.
  • a resin beam trace 97 exists at the base of the two protrusions 93.
  • the trace 97 exists between the first line 96a and the third line 96c.
  • the position of the resin beam trace 97 exists in the same manner in any of the foam molded products 90 molded by the molds 30, 130, 230, 330 for the foam molded products shown in the first to fourth embodiments. .
  • the arrangement of the first line 96a can be a mark for determining the orientation of the foam molded product 90.
  • the orientation of the foam molded product 90 can be defined based on the arrangement of the first line 96a. The operator can easily determine the orientation of the foam molded product 90 based on the definition.
  • the foam molded product 90 can be attached to a vehicle or the like in a predetermined direction (for example, a direction in which the center of gravity is disposed below). .
  • a predetermined direction for example, a direction in which the center of gravity is disposed below.
  • the operator can confirm the arrangement of the first line 96a and install the foam molded product 90 in an appropriate direction.
  • the arrangement of the second line 96b can be a mark for determining the orientation of the foam molded product 90.
  • the second line 96b is arranged so as to be shifted in a direction perpendicular to the direction in which the two protrusions 93 are arranged with respect to the center line CNL connecting the center points of the two protrusions 93.
  • the orientation of the foam molded product 90 can be defined based on the arrangement of 96b. The operator can easily determine the orientation of the foam molded product 90 based on the definition.
  • the structure of the 1st line 96a and the 2nd line 96b appears similarly also in any foam molded product 90 by the various metal mold
  • the main-body part 92 of the frame 91 is the rib 19 provided in either the convex type 22 or the concave mold 12, or urging
  • type 22 moves relatively with respect to the concave mold
  • the mold shown in FIG. 15 is a modification of the foam molded product mold 30 according to the first embodiment, and the foam molded product mold 30X has a support structure for supporting the main body 92 of the frame 91.
  • the main body 92 of the frame 91 is supported by the rib 19 protruding from the main wall 22 a of the convex mold 22. That is, the main body 92 of the frame 91 and the protrusion 93 of the frame 91 are supported by the same mold.
  • the rib 19 is provided with a suction portion 69 that sucks the main body 92 of the frame 91.
  • the adsorption part 69 has the same structure as the adsorption part 68 shown in the first embodiment.
  • the frame 91 When all of the support means for supporting the frame 91 have a support structure based on adsorption, the frame 91 is not subjected to a pressing force from the mold during molding, so that deformation of the frame 91 during molding is suppressed. Thereby, the residual stress between the frame 91 and the foamed resin portion 95, which is generated based on the deformation of the frame 91 during molding, can be reduced.
  • FIG. 16 shows a foam molded product 100 molded by a mold 30X for a foam molded product.
  • the foam molded product 100 includes a frame 101 and a foamed resin portion 105.
  • the foamed resin portion 105 has a recess 109 that is a through hole of the rib 19.
  • the mold 30X for a foam molded product has a structure in which the main body portion 102 of the frame 101 and the protruding portion 103 of the frame 101 are supported by the same mold. Therefore, in the frame 101, the surface portion 101a supported by the rib 19 and the surface portion 101b supported by the support portion 60 are on the same side. For this reason, in the foam molded product 100, the recess 109 corresponding to the rib 19 and the trace 107 of the resin beam are on opposite sides of the frame 101.
  • the shape of the protrusion 93 of the frame 91 used in each embodiment may be linearly extended, have a planar structure, or bend.
  • the shape dimension (for example, the angle of bending) of the bent portion of the protruding portion 93 is likely to vary in manufacturing. If there is such a dimensional variation, the problem shown in the reference example (deterioration of the closed wall 550, deformation of the frame 591 is caused by adopting a method of stopping the leakage of the foamed resin by sandwiching the protruding portion 93 as in the conventional mold. In this state, the molding and the residual stress are remarkable.
  • FIG. 17 is a perspective view showing the structure of the support portion 460 that supports the protruding portion 193 of the frame 191 having the protruding portion 193 having a bent structure.
  • This perspective view is a modified example of the support portion 60 of the first embodiment, and is a view when the convex mold 22 is viewed from a viewpoint facing the main wall 22a of the convex mold 22 from the main wall 12a of the concave mold 12.
  • the support part 460 includes a closing wall 450 and an arrangement part 467 in which the protruding part 193 of the frame 191 is arranged.
  • the arrangement portion 467 is configured as a stepped portion or a groove along the shape of the protruding portion 193.
  • the closing wall 450 protrudes from a portion other than the arrangement portion 467 in the support portion 460.
  • a gap may be generated between the protrusion 193 and the arrangement portion 467 of the support portion 460, but due to the groove structure of the arrangement portion 467.
  • the positioning is performed in the direction intersecting the moving direction DT of the convex mold 22. When the mold is closed, no force is applied to the protruding portion 193, so that the deformation of the frame 191 is suppressed.

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

Abstract

L'invention concerne un moule pour un article moulé en mousse comprenant un premier moule, un deuxième moule et une paroi de fermeture. Le premier moule présente une partie d'introduction dans laquelle une partie saillante, qui fait partie d'un cadre faisant saillie à partir d'une partie en résine de mousse, est introduite. Le deuxième moule est relativement mobile par rapport au premier moule et forme un espace de moulage avec le premier moule. La paroi de fermeture ferme une partie d'une partie d'ouverture, ladite partie d'ouverture étant constituée par la partie d'introduction du premier moule et provoquant la communication externe de l'espace de moulage. La paroi de fermeture est mobile dans une direction le long d'une direction de déplacement du déplacement relatif du deuxième moule par rapport au premier moule. La partie d'ouverture comprend une région d'extension de partie saillante s'étendant depuis la partie saillante du cadre aux extrémités supérieure et inférieure de la partie d'ouverture le long de la direction de déplacement du deuxième moule. La paroi de fermeture ferme au moins une partie d'une région de la partie d'ouverture autre que la région d'extension de partie saillante.
PCT/JP2017/031189 2016-09-06 2017-08-30 Moule pour article moulé en mousse et article moulé en mousse Ceased WO2018047697A1 (fr)

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JP2015136851A (ja) * 2014-01-22 2015-07-30 株式会社カネカ オレフィン系樹脂型内発泡成形用金型
WO2015159691A1 (fr) * 2014-04-15 2015-10-22 株式会社カネカ Moules pour moulage par expansion dans un moule de résine à base de polyoléfine, procédé de fabrication d'un article moulé dans un moulage d'expansion, et article moulé dans un moulage d'expansion
WO2016009820A1 (fr) * 2014-07-15 2016-01-21 株式会社カネカ Matrice de moulage de mousse dans un moule de résine à base de polyoléfine, procédé de fabrication d'article moulé en mousse dans le moule et article moulé en mousse dans le moule
WO2016152530A1 (fr) * 2015-03-26 2016-09-29 株式会社カネカ Corps moulé par expansion dans le moule, procédé de moulage et matrice de moulage correspondants

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JP2006212315A (ja) * 2005-02-07 2006-08-17 T S Tec Kk ヘッドレスト、及びヘッドレストの製造方法
JP5181880B2 (ja) * 2008-07-03 2013-04-10 株式会社ブリヂストン シートパッドの成形方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015136851A (ja) * 2014-01-22 2015-07-30 株式会社カネカ オレフィン系樹脂型内発泡成形用金型
WO2015159691A1 (fr) * 2014-04-15 2015-10-22 株式会社カネカ Moules pour moulage par expansion dans un moule de résine à base de polyoléfine, procédé de fabrication d'un article moulé dans un moulage d'expansion, et article moulé dans un moulage d'expansion
WO2016009820A1 (fr) * 2014-07-15 2016-01-21 株式会社カネカ Matrice de moulage de mousse dans un moule de résine à base de polyoléfine, procédé de fabrication d'article moulé en mousse dans le moule et article moulé en mousse dans le moule
WO2016152530A1 (fr) * 2015-03-26 2016-09-29 株式会社カネカ Corps moulé par expansion dans le moule, procédé de moulage et matrice de moulage correspondants

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