JP2005081574A - Foaming mold and manufacturing method of foamed molded product using it - Google Patents

Foaming mold and manufacturing method of foamed molded product using it Download PDF

Info

Publication number
JP2005081574A
JP2005081574A JP2003313281A JP2003313281A JP2005081574A JP 2005081574 A JP2005081574 A JP 2005081574A JP 2003313281 A JP2003313281 A JP 2003313281A JP 2003313281 A JP2003313281 A JP 2003313281A JP 2005081574 A JP2005081574 A JP 2005081574A
Authority
JP
Japan
Prior art keywords
mold
mating surface
mating
foaming
groove
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.)
Withdrawn
Application number
JP2003313281A
Other languages
Japanese (ja)
Inventor
Masanobu Sakano
雅信 坂野
Tsuyoshi Yamada
強 山田
Noriyuki Sasaki
敬之 佐々木
Hiroaki Ono
洋明 小野
Hiroshi Yamada
洋 山田
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.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber 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 Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Priority to JP2003313281A priority Critical patent/JP2005081574A/en
Publication of JP2005081574A publication Critical patent/JP2005081574A/en
Withdrawn legal-status Critical Current

Links

Images

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foaming mold capable of more certainly preventing the occurrence of flash in a foamed molded product. <P>SOLUTION: In the foaming mold 10 equipped with a lower mold 12 and an upper mold 16 and constituted so as to foam and cure a foamable urethanbe raw solution M injected in the molds 12 and 16, the mating surfaces 22 and 24 of the lower mold 12 and the upper mold 16 are discharge processed surfaces and a groove 26 extending in a peripheral direction is provided to the mating surface 24 of the upper mold 16 while a cushioning material 28 comprising a rubber elastomer is mounted in the groove in a state partially protruded from the mating surface 24 and pressed to the mating surface 22 of the lower mold 12 at the time of mold clamping to seal both mating surfaces 22 and 24. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、主として自動車のシートに用いられるクッション体であるシート用パッドの製造に好適な発泡成形型と、該発泡成形型を用いた発泡成形体の製造方法に関する。   The present invention relates to a foam molding die suitable for producing a seat pad, which is a cushion body mainly used for automobile seats, and a method for producing a foam molded body using the foam molding die.

自動車用シートの座部や背もたれ部に用いられるクッションパッドやバッグパッドと称されるシート用パッドは、軟質ポリウレタンフォームなどの発泡成形体で構成されている。かかる発泡成形体は、一般に、上型と下型を備えてなる発泡成形型を用いて、該成形型内に発泡樹脂原液を注入し、型閉めして、発泡樹脂原液を成形型内で発泡硬化させることにより成型されている。   A seat pad called a cushion pad or a bag pad used for a seat portion or a backrest portion of an automobile seat is made of a foamed molded body such as a flexible polyurethane foam. In general, such a foamed molded article is obtained by injecting a foamed resin stock solution into the mold using a foamed mold having an upper mold and a lower mold, and closing the mold to foam the foamed resin stock solution in the mold. Molded by curing.

発泡成形型は、上記のように２つ以上の型を接合することで発泡成形空間を形成するものであるため、接合部となる合わせ面のシール性が不十分であると、上型と下型との合わせ面間に発泡樹脂原液が侵入して、得られた発泡成形体の周囲にバリが発生してしまう。このようなバリが発生すると、パッドを覆うカバー材を通して表面に筋が現れるため、成形後にバリ取り作業をする必要がある。特に、図４に示すような自動車用シートの背もたれ部に用いられるバックパッド１については、いわゆる３分割タイプの成形型を用いて、パッド裏面側に内向きのフランジ状の張り出し部４を一体に成形してなるものであるため、上型と下型の合わせ面に相当するパーティングラインＰＬがパッドの上辺と両側辺の見えやすい箇所にくるため、バリは確実に除去する必要がある。   Since the foam molding die forms a foam molding space by joining two or more dies as described above, if the sealing property of the mating surface to be a joint is insufficient, The foamed resin stock solution enters between the mating surfaces with the mold, and burrs are generated around the obtained foamed molded product. When such burrs are generated, streaks appear on the surface through the cover material covering the pads, and therefore it is necessary to perform a deburring operation after molding. In particular, with respect to the back pad 1 used for the backrest portion of an automobile seat as shown in FIG. 4, an inward flange-shaped overhanging portion 4 is integrally formed on the back side of the pad using a so-called three-part mold. Since it is formed, the parting line PL corresponding to the mating surface of the upper die and the lower die comes to a place where the upper side and both sides of the pad are easy to see, and therefore it is necessary to remove the burr reliably.

ところが、発泡成形体の場合、バリは合わせ面の微小な隙間で形成されることから緻密な発泡構造になりやすく、柔軟な発泡成形体本体に比べて硬化芯と称されるように硬いバリが形成されてしまう。そのため、発泡体本体に損傷を与えることなくバリを取り除く作業は、成形時の欠肉を補修する以上に大きな工数を要し、そのため、特に発泡成形体の場合には発泡成形時にバリが発生しないような対策が重要である。   However, in the case of a foamed molded product, the burrs are formed by minute gaps between the mating surfaces, and thus tend to have a dense foamed structure. Compared to the flexible foamed molded product body, a hard burr is called a cured core. Will be formed. Therefore, the work to remove burrs without damaging the foam body requires more man-hours than repairing the missing wall at the time of molding. Therefore, in the case of foam molded products, burrs do not occur during foam molding. Such measures are important.

下記特許文献１には、上記のようなバリ取り工程を廃止することを目的として、一対の成形型の合わせ面に５〜３０ｍｍの幅で施した放電加工面を設け、該放電加工面によって前記一対の成形型をシールするように構成したウレタン発泡金型が提案されている。このように合わせ面を放電加工面とすると、上型と下型とが合わせ面で隙間なく接合するが、これだけでは発泡成形時に成形型内の気体が合わせ面から漏れてしまい、かかる気体とともに発泡樹脂原液が合わせ面に侵入してバリが発生してしまう。
特開平９−２８６０３０号公報 In the following Patent Document 1, for the purpose of eliminating the deburring process as described above, an electric discharge machining surface provided with a width of 5 to 30 mm is provided on the mating surfaces of a pair of molds, and the electric discharge machining surface is used to A urethane foam mold configured to seal a pair of molds has been proposed. When the mating surface is an electric discharge machining surface, the upper mold and the lower mold are joined together without gaps at the mating surface, but this alone causes gas in the molding mold to leak from the mating surface during foam molding, and foaming occurs along with the gas. The resin stock solution enters the mating surfaces and generates burrs.
JP-A-9-286030

本発明は、以上の点に鑑みてなされたものであり、発泡成形体におけるバリの発生をより確実に防止することができる発泡成形型及び製造方法を提供することを目的とする。   This invention is made | formed in view of the above point, and it aims at providing the foam molding die and manufacturing method which can prevent generation | occurrence | production of the burr | flash in a foaming molding more reliably.

本発明の発泡成形型は、一方型と他方型とを備え、内部に注入された発泡樹脂原液を発泡硬化させる発泡成形型において、前記一方型と他方型との合わせ面のうち一方型の合わせ面に溝が設けられ、該溝に緩衝材がその一部を合わせ面から突出させた状態にて装着されて、型閉め時に前記緩衝材を前記他方型の合わせ面に押し当てて両合わせ面間をシールするようにしたものである。   The foaming mold of the present invention comprises a one-type mold and the other mold, and is a foam-molding mold that foams and cures a foamed resin stock solution injected into the mold. A groove is provided on the surface, and the cushioning material is mounted in a state in which a part of the cushioning material protrudes from the mating surface, and when the mold is closed, the cushioning material is pressed against the mating surface of the other mold and both mating surfaces The gap is sealed.

また、本発明の発泡成形体の製造方法は、一方型と他方型とを備える成形型であって、前記一方型と他方型との合わせ面のうち一方型の合わせ面に溝が設けられ、該溝に緩衝材がその一部を合わせ面から突出させた状態にて装着されてなる発泡成形型を用いて、該発泡成形型内に発泡樹脂原液を注入し、型閉めすることで前記一方型の合わせ面に設けた前記緩衝材を前記他方型の合わせ面に押し当てて両合わせ面間をシールして、前記発泡樹脂原液を成形型内で発泡硬化させるものである。   Moreover, the method for producing a foamed molded article of the present invention is a molding die comprising one mold and the other mold, wherein a groove is provided on the mating surface of one mold among the mating surfaces of the one mold and the other mold, Using a foaming mold in which a cushioning material is mounted in the groove in a state where a part of the cushioning material protrudes from the mating surface, a foamed resin stock solution is injected into the foaming mold and the mold is closed. The cushioning material provided on the mating surface of the mold is pressed against the mating surface of the other mold to seal between the mating surfaces, and the foamed resin stock solution is foam-cured in the mold.

このように一方型と他方型との合わせ面間を緩衝材でシールするようにしたことにより、合わせ面からの気体の漏れがなくなるので、当該合わせ面への発泡樹脂原液の侵入もなくなり、よって、バリの発生を確実に防止することができる。   Since the gap between the mating surfaces of the one mold and the other mold is sealed with a cushioning material in this way, there is no gas leakage from the mating surfaces, so there is no invasion of the foamed resin stock solution into the mating surfaces. The occurrence of burrs can be reliably prevented.

上記本発明において、一方型と他方型との合わせ面は放電加工面であることが好ましく、これにより型合わせ面のすり合わせ精度を向上することができる。また、上記緩衝材はゴム弾性体からなることが好ましく、これにより高いシール性を確保することができる。   In the said invention, it is preferable that the mating surface of one type | mold and the other type | mold is an electric discharge machining surface, and can improve the alignment precision of a type | mold mating surface by this. Moreover, it is preferable that the said buffer material consists of rubber elastic bodies, and can ensure high sealing performance by this.

本発明によれば、発泡成形型の合わせ面に緩衝材を設けたことにより、一方型と他方型のすり合わせを向上させて、発泡成形体におけるバリの発生を確実に防止することができる。   According to the present invention, by providing the cushioning material on the mating surface of the foam mold, it is possible to improve the alignment between the one mold and the other mold and reliably prevent the occurrence of burrs in the foam molded article.

以下、本発明の１実施形態について図面に基づいて説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

図１は実施形態に係る発泡成形型１０の断面図であり、図２は前図のＩＩ−ＩＩ線断面図、図３は発泡成形型１０の要部拡大断面図、図４は発泡成形型１０により成形されるシート用パッド１の斜視図である。   FIG. 1 is a cross-sectional view of a foam mold 10 according to the embodiment, FIG. 2 is a cross-sectional view taken along the line II-II of the previous figure, FIG. 3 is an enlarged cross-sectional view of the main part of the foam mold 10, and FIG. 1 is a perspective view of a sheet pad 1 formed according to FIG.

このシート用パッド１は、例えば自動車のフロントシートにおける背もたれ部のバックパッドに使用されるもので、軟質ポリウレタンフォームによりなる発泡成形体である。そして、サイドサポート２を含む背もたれ部を構成するパッド主体部３の裏面側において、両側辺と上辺との３方の辺部にフレーム装着のための内向きフランジ状の張り出し部４が一体に設けられている。   The seat pad 1 is used, for example, as a back pad for a backrest portion of a front seat of an automobile, and is a foamed molded body made of a flexible polyurethane foam. In addition, on the back side of the pad main body 3 constituting the backrest portion including the side support 2, inward flange-shaped overhang portions 4 for frame mounting are integrally provided on the three sides of both sides and the upper side. ing.

このパッド１を成形する発泡成形型１０は、略水平に保持されてパッド１の表面側を成形する凹状の下型１２と、この下型１２の一端に配されたヒンジ部１４を中心に回動することにより下型１２を開閉可能な上型１６と、この上型１６内に設けられてパッド１の上記張り出し部４の内側を成形する中子型１８とからなる３つ割型の成形型であり、この実施形態ではアルミニウム製の金型である。   The foaming mold 10 for molding the pad 1 is rotated around a concave lower mold 12 which is held substantially horizontally and molds the surface side of the pad 1 and a hinge portion 14 disposed at one end of the lower mold 12. Molding of a split mold comprising an upper mold 16 capable of opening and closing the lower mold 12 by moving, and a core mold 18 provided in the upper mold 16 and molding the inside of the overhanging portion 4 of the pad 1 A mold, which in this embodiment is an aluminum mold.

上記中子型１８は、駆動手段２０により上型１６の下面に対して接離可能に設けられており、図１（ｂ）及び図２に示すように、中子型１８を上型１６の下面に接合させた状態で、上型１６を下型１２に対して閉じることにより、成形型１０の内側にはパッド形状に対応した発泡成形空間２０が形成されるようになっている。   The core mold 18 is provided so as to be able to contact with and separate from the lower surface of the upper mold 16 by the driving means 20, and as shown in FIGS. 1B and 2, the core mold 18 is connected to the upper mold 16. When the upper die 16 is closed with respect to the lower die 12 while being bonded to the lower surface, a foam molding space 20 corresponding to the pad shape is formed inside the molding die 10.

下型１２と上型１６には接合部となる合わせ面２２，２４がそれぞれ設けられている。下型１２の合わせ面２２は、下型１２の凹部の開口周縁部に沿って、その全周にわたって略一定幅で設けられている。また、上型１６の合わせ面２４は、下型１２の合わせ面２２に対応させて、上型１６の底面部の周縁部に沿って、その全周にわたって略一定幅で設けられている。そして、両合わせ面２２，２４には放電加工が施されており、すなわち、両合わせ面２２，２４は放電加工面である。放電加工としては公知の方法を採用することができ、例えば、下型１２と上型１６とを合わせた後、両型に電気を流し、その合わせ面２２，２４のアルミニウムを溶かすことにより、両合わせ面２２，２４が隙間なく当接するように形成することができる。   The lower mold 12 and the upper mold 16 are provided with mating surfaces 22 and 24 that serve as joints. The mating surface 22 of the lower mold 12 is provided with a substantially constant width along the entire periphery of the opening periphery of the recess of the lower mold 12. Further, the mating surface 24 of the upper mold 16 is provided with a substantially constant width along the peripheral edge of the bottom surface portion of the upper mold 16 so as to correspond to the mating surface 22 of the lower mold 12. The both mating surfaces 22 and 24 are subjected to electric discharge machining, that is, the both mating surfaces 22 and 24 are electric discharge machining surfaces. As the electric discharge machining, a known method can be adopted. For example, after the lower mold 12 and the upper mold 16 are combined, electricity is applied to both molds, and the aluminum on the mating surfaces 22 and 24 is melted. The mating surfaces 22 and 24 can be formed to contact each other without a gap.

上型１６の合わせ面２４には、その長手方向、即ち周方向に沿って延びる溝２６が設けられ、この溝２６内にシール材としてゴム弾性体からなる紐状の緩衝材２８が装着されている。   A groove 26 extending in the longitudinal direction, that is, the circumferential direction is provided on the mating surface 24 of the upper mold 16, and a string-like cushioning material 28 made of a rubber elastic body is mounted in the groove 26 as a sealing material. Yes.

上記溝２６は、本実施形態では合わせ面２４の全長にわたって設けられているが、必ずしも全長に設ける必要はない。すなわち、パッド１の上辺と両側辺についてはバリの発生を確実に防止するため緩衝材２８を設ける必要はあるが、パッド１の下辺についてはシート表面に露出しない部分であり、バリが発生しても外観上問題にならないため、この部分については必ずしも緩衝材２８を設けなくてもよい。   Although the groove 26 is provided over the entire length of the mating surface 24 in the present embodiment, it is not necessarily required to be provided over the entire length. That is, although it is necessary to provide the buffer material 28 in order to reliably prevent the generation of burrs on the upper side and both sides of the pad 1, the lower side of the pad 1 is a portion that is not exposed on the sheet surface, and burrs are generated. However, the buffer material 28 is not necessarily provided for this portion.

図３（ａ）に拡大して示すように、溝２６は平坦な合わせ面２４の幅方向略中央、より詳細には幅方向中心線からわずかに発泡成形空間２０寄りの位置に設けられており、溝２６の両側には放電加工面が確保されている。また、溝２６は、装着した緩衝材２８が容易に外れないように、開口側が狭く奥に行くほど幅が広い断面略台形状をなしている。   As shown in an enlarged view in FIG. 3A, the groove 26 is provided at a substantially center in the width direction of the flat mating surface 24, more specifically, at a position slightly closer to the foam molding space 20 from the center line in the width direction. The electric discharge machining surface is secured on both sides of the groove 26. Moreover, the groove | channel 26 has comprised the substantially trapezoidal shape of a cross section with the width | variety widen so that the opening side is narrow and it goes to the back so that the mounted | wore buffer material 28 may not remove easily.

緩衝材２８は、型閉め時に下型１２の平坦な合わせ面２２に押し当てられて両合わせ面２２，２４間のシール性を確保し得るものであれば特に限定されないが、本実施形態では耐熱性を考慮してシリコーンゴムからなるソリッドゴムの緩衝材２８を用いている。また、緩衝材２８の断面形状は装着性とシール性を考慮して円形のものを用いている。更に、緩衝材２８は、溝２６に嵌め込んだときに、その一部が放電加工面である合わせ面２４から所定高さだけ突出するような大きさに設定されている。なお、この突出高さｈは、型閉め時に緩衝材２８が圧縮されることにより、上記シール性を発揮しつつ、しかも下型１２と上型１６の合わせ面２２，２４同士が当接し得るように設定されることが好ましく、具体的には０．３〜０．５ｍｍ程度であることが好ましい。緩衝材２８は、本実施形態では、合わせ面２４の全周にわたって装着するが、その場合において紐状の緩衝材２８を用いた場合、その両端部をつなぐ継ぎ目ができることになるが、このような継ぎ目はバリが発生しても問題にならないパッド１の下辺部に配置することが好ましい。   The cushioning material 28 is not particularly limited as long as it can be pressed against the flat mating surface 22 of the lower mold 12 when the mold is closed to ensure the sealing performance between the mating surfaces 22, 24. In consideration of the properties, a solid rubber cushioning material 28 made of silicone rubber is used. In addition, the cross-sectional shape of the cushioning material 28 is circular in consideration of mounting properties and sealing properties. Furthermore, when the buffer material 28 is fitted into the groove 26, the buffer material 28 is set to a size such that a part thereof protrudes from the mating surface 24, which is an electric discharge machining surface, by a predetermined height. The protrusion height h is such that the mating surfaces 22 and 24 of the lower mold 12 and the upper mold 16 can come into contact with each other while exhibiting the above-mentioned sealing performance by compressing the cushioning material 28 when the mold is closed. It is preferable to set to about 0.3-0.5 mm specifically ,. In this embodiment, the cushioning material 28 is attached over the entire circumference of the mating surface 24. In this case, when the string-like cushioning material 28 is used, a seam that connects both ends of the cushioning material 28 can be formed. The seam is preferably arranged on the lower side of the pad 1 which does not cause a problem even if burrs occur.

ここで、図３（ａ）を参照して各寸法の一例を挙げれば、例えば、合わせ面（放電加工面）２４の幅Ｗが１５〜３０ｍｍである場合、緩衝材２８の直径は６〜８ｍｍ程度とすることができ、Ｗ＝２０ｍｍで緩衝材の直径＝８ｍｍの場合、溝２６の開口幅ｗ１＝６ｍｍ、溝２６の底部幅ｗ２＝７ｍｍ、溝２６の深さｄ＝６．５ｍｍとすることができる。このように、溝２６は、その開口幅、底部幅および深さのいずれもが緩衝材２８の直径よりも小さく設定されることが好ましい。   Here, if an example of each dimension is given with reference to FIG. 3A, for example, when the width W of the mating surface (electric discharge machining surface) 24 is 15 to 30 mm, the diameter of the cushioning material 28 is 6 to 8 mm. When W = 20 mm and the diameter of the buffer material = 8 mm, the opening width w1 of the groove 26 is 6 mm, the bottom width w2 of the groove 26 is 7 mm, and the depth d of the groove 26 is 6.5 mm. be able to. As described above, the groove 26 is preferably set such that the opening width, bottom width, and depth thereof are smaller than the diameter of the cushioning material 28.

以上よりなる発泡成形型１０を用いてパッド１を成形するに際しては、図１（ａ）に示すように、上型１６を下型１２に対して開状態として、下型１２の凹部内に発泡ウレタン原液Ｍを注入する。次いで、図１（ｂ）及び図２に示すように、中子型１８とともに上型１６を閉じて発泡成形空間２０内で発泡ウレタン原液Ｍを発泡硬化させる。その際、型閉めにより、図３（ｂ）に拡大して示すように、上型１６の合わせ面２４に設けた緩衝材２８が下型１２の合わせ面２２に押し当てられて、両合わせ面２２，２４間がシールされる。すなわち、上型１６の緩衝材２８を下型１２の合わせ面２２に押し当てて弾性変形させながら下型１２と上型１６の合わせ面２２，２４同士を当接させて、両者２２，２４間をシールする。   When the pad 1 is molded using the foaming mold 10 having the above-described configuration, as shown in FIG. 1A, the upper mold 16 is opened with respect to the lower mold 12 and foamed into the recess of the lower mold 12. Inject urethane stock solution M. Next, as shown in FIGS. 1B and 2, the upper mold 16 is closed together with the core mold 18, and the foamed urethane stock solution M is foamed and cured in the foam molding space 20. At that time, as shown in an enlarged view of FIG. 3B, the cushioning material 28 provided on the mating surface 24 of the upper mold 16 is pressed against the mating surface 22 of the lower mold 12 by closing the mold, so that both mating surfaces Between 22 and 24 is sealed. That is, while the cushioning material 28 of the upper mold 16 is pressed against the mating surface 22 of the lower mold 12 and elastically deformed, the mating surfaces 22 and 24 of the lower mold 12 and the upper mold 16 are brought into contact with each other. To seal.

このように下型１２と上型１６との合わせ面２２，２４間のシールを放電加工面によるすり合わせだけでなく、更に緩衝材２８によるシールを追加したことにより、発泡成形時に合わせ面２２，２４からの気体の漏れがなくなる。すなわち、成形型１０内の気体は緩衝材２８によりその外側への漏れが遮断される。そのため、成形型１０内の気体が合わせ面２２，２４間に侵入してきたとしても、その気体は緩衝材２８によりその内周側３０に溜まり、そこで圧縮されるので、この気体の存在により緩衝材２８の内周側３０にも発泡ウレタン原液Ｍは侵入できなくなる。よって、バリの発生を確実に防止することができる。   As described above, the seal between the mating surfaces 22 and 24 of the lower mold 12 and the upper mold 16 is not only rubbed by the electric discharge machining surface, but also a seal by the buffer material 28 is added, so that the mating surfaces 22 and 24 at the time of foam molding. No gas leakage from That is, the gas in the mold 10 is blocked from leaking outside by the buffer material 28. Therefore, even if the gas in the mold 10 has entered between the mating surfaces 22 and 24, the gas accumulates on the inner peripheral side 30 by the buffer material 28 and is compressed there. The foamed urethane stock solution M cannot enter the inner peripheral side 30 of 28. Therefore, generation | occurrence | production of a burr | flash can be prevented reliably.

このようにして発泡成形型１０内で発泡ウレタン原液Ｍを発泡硬化させてポリウレタンフォームを成形した後、上型１６を開き、更に、中子型１８を駆動手段２０により上型１６の下面から離すことにより、シート用パッド１を取り出すことができる。これにより、外周部にバリのないシート用パッド１を成形することができる。   After foaming and curing the foamed urethane stock solution M in the foaming mold 10 in this way to form a polyurethane foam, the upper mold 16 is opened, and the core mold 18 is separated from the lower surface of the upper mold 16 by the driving means 20. Thus, the sheet pad 1 can be taken out. Thereby, the pad 1 for sheets without a burr | flash in an outer peripheral part can be shape | molded.

なお、上記実施形態では、緩衝材２８を上型１６の合わせ面２４に設けたが、下型１２の合わせ面２２に設けることもできる。また、上型１６と中子型１８との合わせ面においても同様に緩衝材を設けてもよい。更に、上記実施形態では３つ割型の成形型について説明したが、上型と下型のみからなる２つ割型の成形型においても同様に適用することができる。更に、上下一対の型を持つ成形型のみでなく、左右一対の型を持つ成形型にも適用することができる。   In the above embodiment, the cushioning material 28 is provided on the mating surface 24 of the upper mold 16, but may be provided on the mating surface 22 of the lower mold 12. Similarly, a cushioning material may be provided on the mating surfaces of the upper mold 16 and the core mold 18. Further, in the above-described embodiment, the split mold is described. However, the present invention can be similarly applied to a split mold including only an upper mold and a lower mold. Furthermore, the present invention can be applied not only to a mold having a pair of upper and lower molds but also to a mold having a pair of left and right molds.

本発明の発泡成形型及び製造方法は、主として自動車のシートに用いられるクッション体であるシート用パッドの製造に好適であるが、これに限らず、各種車両用、家庭用のクッション体に用いられるパッドの製造を始め、種々の発泡成形体の製造に使用することができる。   The foaming mold and the manufacturing method of the present invention are suitable for manufacturing a seat pad, which is a cushion body mainly used for automobile seats, but are not limited to this, and are used for various vehicle and home cushion bodies. It can be used for the production of various foamed molded articles including the production of pads.

本発明の一実施形態に係る発泡成形型の断面図であり、（ａ）は上型を開いた状態、（ｂ）は上型を閉じた状態をそれぞれ示す。It is sectional drawing of the foaming mold which concerns on one Embodiment of this invention, (a) shows the state which opened the upper mold | type, (b) shows the state which closed the upper mold | type, respectively. 図１（ｂ）のＩＩ−ＩＩ線断面図である。It is the II-II sectional view taken on the line of FIG.1 (b). 同発泡成形型の合わせ面の拡大断面図であり、（ａ）は上型の合わせ面を、（ｂ）はこれと下型の合わせ面とを合わせた状態をそれぞれ示す。It is an expanded sectional view of the mating surface of the same foaming mold, (a) shows the mating surface of the upper die, and (b) shows the state where this and the mating surface of the lower die are mated. （ａ）はシート用パッドの正面から見た斜視図、（ｂ）はその裏面から見た斜視図である。(A) is the perspective view seen from the front of the pad for sheets, (b) is the perspective view seen from the back surface.

符号の説明Explanation of symbols

１０……発泡成形型
１２……下型（他方型）
１６……上型（一方型）
２２……下型の合わせ面
２４……上型の合わせ面
２６……溝
２８……緩衝材
１……シート用パッド
Ｍ……発泡ウレタン原液 10 ... Foam mold 12 ... Lower mold (other mold)
16 …… Upper die (one side)
22 …… Lower die mating surface 24 …… Upper die mating surface 26 …… Groove 28 …… Buffer material 1 …… Seat pad M …… Urethane foam stock solution

Claims (4)

一方型と他方型とを備え、内部に注入された発泡樹脂原液を発泡硬化させる発泡成形型において、前記一方型と他方型との合わせ面のうち一方型の合わせ面に溝が設けられ、該溝に緩衝材がその一部を合わせ面から突出させた状態にて装着されて、型閉め時に前記緩衝材を前記他方型の合わせ面に押し当てて両合わせ面間をシールするようにしたことを特徴とする発泡成形型。   In the foam molding die comprising one mold and the other mold, and foaming and curing the foamed resin stock solution injected therein, a groove is provided on the mating surface of one of the mating surfaces of the one mold and the other mold, The cushioning material is mounted in the groove with a part of it projecting from the mating surface, and when the mold is closed, the cushioning material is pressed against the mating surface of the other mold to seal between the mating surfaces. Foaming mold characterized by. 前記一方型と前記他方型との合わせ面が放電加工面であることを特徴とする請求項１記載の発泡成形型。   The foaming mold according to claim 1, wherein a mating surface of the one mold and the other mold is an electric discharge machining surface. 前記緩衝材がゴム弾性体からなることを特徴とする請求項１又は２記載の発泡成形型。   The foam molding die according to claim 1 or 2, wherein the cushioning material is made of a rubber elastic body. 一方型と他方型とを備える成形型であって、前記一方型と他方型との合わせ面のうち一方型の合わせ面に溝が設けられ、該溝に緩衝材がその一部を合わせ面から突出させた状態にて装着されてなる発泡成形型を用いて、
該発泡成形型内に発泡樹脂原液を注入し、型閉めすることで前記一方型の合わせ面に設けた前記緩衝材を前記他方型の合わせ面に押し当てて両合わせ面間をシールして、前記発泡樹脂原液を成形型内で発泡硬化させることを特徴とする発泡成形体の製造方法。 A molding die comprising one mold and the other mold, wherein a groove is provided on the mating surface of the one mold out of the mating surfaces of the one mold and the other mold, and a cushioning material partially extends from the mating surface to the groove. Using a foaming mold that is mounted in a protruding state,
Injecting the foamed resin stock solution into the foaming mold, and closing the mold, the buffer material provided on the mating surface of the one mold is pressed against the mating surface of the other mold to seal between the mating surfaces, A method for producing a foamed molded product, comprising foaming and curing the foamed resin stock solution in a mold.
JP2003313281A 2003-09-04 2003-09-04 Foaming mold and manufacturing method of foamed molded product using it Withdrawn JP2005081574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003313281A JP2005081574A (en) 2003-09-04 2003-09-04 Foaming mold and manufacturing method of foamed molded product using it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003313281A JP2005081574A (en) 2003-09-04 2003-09-04 Foaming mold and manufacturing method of foamed molded product using it

Publications (1)

Publication Number Publication Date
JP2005081574A true JP2005081574A (en) 2005-03-31

Family

ID=34414248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003313281A Withdrawn JP2005081574A (en) 2003-09-04 2003-09-04 Foaming mold and manufacturing method of foamed molded product using it

Country Status (1)

Country Link
JP (1) JP2005081574A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007289372A (en) * 2006-04-25 2007-11-08 Toyo Tire & Rubber Co Ltd Seat back pad, and its manufacturing method
JP2009061640A (en) * 2007-09-05 2009-03-26 Toyo Tire & Rubber Co Ltd Method for manufacturing seat back pad
WO2009145102A1 (en) * 2008-05-28 2009-12-03 株式会社ブリヂストン Mold for foam molding and foam molding method
JP2009285943A (en) * 2008-05-28 2009-12-10 Bridgestone Corp Foam molding mold and foam molding method
JP2009285942A (en) * 2008-05-28 2009-12-10 Bridgestone Corp Foam molding mold and foam molding method
JP2012187711A (en) * 2011-03-08 2012-10-04 Toyo Tire & Rubber Co Ltd Device and method for manufacturing seat cushion pad
US8814548B2 (en) 2009-12-24 2014-08-26 Toyota Boshoku Kabushiki Kaisha Mold assembly
WO2017169347A1 (en) * 2016-03-29 2017-10-05 株式会社カネカ In-mold foamed molding, foamed composite molding, method for manufacturing foamed composite molding, and mold
JP2018068336A (en) * 2016-10-24 2018-05-10 東洋ゴム工業株式会社 Seat pad production method
JP2019025201A (en) * 2017-08-02 2019-02-21 トヨタ紡織株式会社 Manufacturing method of seat cushion material, and foaming mold for manufacturing the same

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007289372A (en) * 2006-04-25 2007-11-08 Toyo Tire & Rubber Co Ltd Seat back pad, and its manufacturing method
JP2009061640A (en) * 2007-09-05 2009-03-26 Toyo Tire & Rubber Co Ltd Method for manufacturing seat back pad
WO2009145102A1 (en) * 2008-05-28 2009-12-03 株式会社ブリヂストン Mold for foam molding and foam molding method
JP2009285943A (en) * 2008-05-28 2009-12-10 Bridgestone Corp Foam molding mold and foam molding method
JP2009285942A (en) * 2008-05-28 2009-12-10 Bridgestone Corp Foam molding mold and foam molding method
CN102046350B (en) * 2008-05-28 2013-11-27 株式会社普利司通 Mold for foam molding and foam molding method
US9085105B2 (en) 2008-05-28 2015-07-21 Bridgestone Corporation Foam molding mold and foam molding method
US8814548B2 (en) 2009-12-24 2014-08-26 Toyota Boshoku Kabushiki Kaisha Mold assembly
JP2012187711A (en) * 2011-03-08 2012-10-04 Toyo Tire & Rubber Co Ltd Device and method for manufacturing seat cushion pad
WO2017169347A1 (en) * 2016-03-29 2017-10-05 株式会社カネカ In-mold foamed molding, foamed composite molding, method for manufacturing foamed composite molding, and mold
JP2018068336A (en) * 2016-10-24 2018-05-10 東洋ゴム工業株式会社 Seat pad production method
JP2019025201A (en) * 2017-08-02 2019-02-21 トヨタ紡織株式会社 Manufacturing method of seat cushion material, and foaming mold for manufacturing the same

Similar Documents

Publication Publication Date Title
US9085105B2 (en) Foam molding mold and foam molding method
JP2005081574A (en) Foaming mold and manufacturing method of foamed molded product using it
CN103862608A (en) Molding apparatus and method for manufacturing crash pad
CN103862610A (en) Sealing apparatus and method of foam injection mold
JP2007512159A (en) Method for producing an integral elastic support and support obtained by the method
JP2013163346A (en) Die, method for manufacturing foam molding, and the foam molding
WO2013121942A1 (en) Mold, method for manufacturing molded foam body, and molded foam body
JP5396796B2 (en) Method for producing foam molded article and foam molded article
US11759982B2 (en) Foam molded product, method for producing foam molded product, and molding die structure of foam molded product
KR20170045794A (en) Apparatus for preventing resin falling of metal mold for injection molding
JP5366441B2 (en) Mold for foam molding and foam molding method
JP2005081575A (en) Foam molding machine and manufacturing method of foamed molded product
JP2006015664A (en) Foaming and shaping mold and manufacturing method of foaming and shaping mold
JP6275801B1 (en) Resin products
JP5738630B2 (en) Seat cushion pad manufacturing apparatus and manufacturing method
JP6746414B2 (en) Vehicle seat pad manufacturing method
JP2005280227A (en) Molding method for vehicular interior part made of resin
JP4160927B2 (en) Mold for synthetic resin compression molding
JP5397285B2 (en) Weather strip manufacturing method
JP6374126B2 (en) Resin products
JP5038826B2 (en) Seat pad, method for producing the same, and foam mold
JP7079178B2 (en) Seat pad molding mold and seat pad manufacturing method
JP4205568B2 (en) Manufacturing method of seat pad
JPH0531443B2 (en)
JP2001341170A (en) Mold for molding resin substrate with sealed part and molding method for the substrate

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20061107