JP3045016U - Mold for in-mold foam molding and mold surface material used therefor - Google Patents
Mold for in-mold foam molding and mold surface material used thereforInfo
- Publication number
- JP3045016U JP3045016U JP1997005727U JP572797U JP3045016U JP 3045016 U JP3045016 U JP 3045016U JP 1997005727 U JP1997005727 U JP 1997005727U JP 572797 U JP572797 U JP 572797U JP 3045016 U JP3045016 U JP 3045016U
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- mold
- surface material
- convex
- concave
- engaging
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Abstract
(57)【要約】
【課題】 金型表面に多孔金属板を取り付けて成形体表
面の樹脂粒子の亀甲模様を消去可能とした熱可塑性樹脂
の型内発泡成形用金型で、多孔金属板の金型への取り付
け痕が成形体に残らず、かつ金型への取り付け取り外し
が容易で、金型への多孔金属板の取り付け部が成形中に
変形したり、金型型表面から多孔金属板が浮き上がるこ
ともなく、外観の良好な成形体を効率的に得ることがで
きる金型及びそれに用いる金型表面材を提供する。
【解決手段】 多孔金属板2a，2bからなる表面層２の裏
面に複数個の凸状係合部品４又は凹状係合部品10を取り
付けた金型表面材１と、金型内表面13ｂに設けた凹部13
ｃ内に凸状係合部品４や凹状係合部品10と係合する凹条
係合部品10や凸状係合部品４を設けた金型13よりなり、
金型表面材１裏面の係合部品４、10を金型内表面13ｂの
凹部13ｃ内の係合部品10、４に嵌合して金型内表面13ｂ
に金型表面材１を固定する。
PROBLEM TO BE SOLVED: To provide an in-mold foaming mold for a thermoplastic resin, in which a perforated metal plate is attached to the surface of a mold to make it possible to erase the pattern of the resin particles on the surface of the molded product. No trace of attachment to the mold remains on the molded body, and it is easy to attach to and remove from the mold.The attachment part of the porous metal plate to the mold may be deformed during molding, or the porous metal plate may be removed from the mold surface. A mold capable of efficiently obtaining a molded article having a good appearance without floating, and a mold surface material used therefor. SOLUTION: A mold surface material 1 in which a plurality of convex engaging parts 4 or concave engaging parts 10 are attached to the back surface of a surface layer 2 composed of porous metal plates 2a and 2b, and a mold inner surface 13b is provided. Recess 13
c, a mold 13 provided with the concave and convex engaging parts 10 and the convex engaging parts 4 for engaging with the convex and concave engaging parts 4,
The engaging parts 4 and 10 on the back surface of the mold surface material 1 are fitted to the engaging parts 10 and 4 in the concave portion 13c of the inner surface 13b of the mold to fit the inner surface 13b of the mold.
The mold surface material 1 is fixed to the surface.
Description
【０００１】[0001]
本考案は、型内発泡成形用金型及び該金型に用いる金型表面材に関し、更に詳 しくは、金型への表面材の取り付けが容易で、且つ取り付け痕が成形体表面に残 ることがなく、しかも、表面材表層部の意匠の転写により予備発泡粒子の亀甲模 様が解消された、外観の良好な成形体を提供することができる金型及び該金型に 用いる表面材に関する。 The present invention relates to a mold for in-mold foam molding and a mold surface material used for the mold, and more particularly, to easily attach the surface material to the mold and leave attachment marks on the surface of the molded body. The present invention relates to a mold and a surface material used for the mold, which can provide a molded article having a good appearance in which the design of the surface layer portion of the surface material is eliminated and the pattern of the pre-expanded particles is eliminated by transferring the design of the surface layer portion of the surface material. .
【０００２】[0002]
ポリエチレン、ポリプロピレン等のポリオレフィン系樹脂、又はポリスチレン 系樹脂等の型内発泡成形体は、これらの予備発泡粒子を金型内に充填し、水蒸気 等の加熱媒体により加熱し、発泡融着せしめて製造される。しかしながら、得ら れた成形体の表面には予備発泡粒子の亀甲模様が現れるばかりでなく、蒸気孔の 痕が残り、成形体の外観を著しく損ない、商品価値を低下させるという間題があ る。かかる問題を解決するために、特公昭６３−１１１３８号及び特開平８−１ ４２０６１号には、金属製スクリーンを金型内壁に装着した金型を用いて成形す る方法が記載されている。 In-mold foam molded products such as polyolefin resins such as polyethylene and polypropylene, or polystyrene resins are manufactured by filling these pre-expanded particles in a mold, heating them with a heating medium such as steam, and fusing them. Is done. However, the surface of the obtained molded body has a problem that not only a pattern of the pre-expanded particles appears but also a mark of a steam hole, which significantly deteriorates the appearance of the molded body and lowers its commercial value. . In order to solve such a problem, Japanese Patent Publication No. 63-11138 and Japanese Patent Application Laid-Open No. 8-42061 describe a method in which a metal screen is formed using a metal mold mounted on the inner wall of the metal mold.
【０００３】[0003]
特公昭６３−１１１３８号公報記載の方法では、上記従来技術の問題点は解消 されるものの、金属製スクリーン裏面に取り付けた、金型への取り付け具の溶接 痕や金属製スクリーンを表面からビス又はボルトで取り付けた際の金型面のビス 又はボルトの頭部が成形体表面に転写され、外観を損なうという新たな問題を提 起する。 According to the method described in JP-B-63-11138, although the above-mentioned problems of the prior art are solved, welding marks of a fixture attached to a metal mold attached to the back surface of the metal screen or a metal screen with a screw or This causes a new problem in that the screws on the mold surface or the heads of the bolts when transferred with bolts are transferred to the surface of the molded product, which impairs the appearance.
【０００４】 更に、特開平８−１４２０６１号公報記載の方法では、金属製スクリーン裏面 に取り付けた金型面への取り付け具の溶接痕は成形体表面に転写されないものの 、金属製スクリーンをその取り付けボルトで金型裏面よりナットで固定する際、 締め付けが強いと成形時の成形圧及び高温により次第に取り付け部の金属スクリ ーンが凹み、成形体表面は凸状となって外観を損なうようになり、又、締め付け が弱いと成形中にナットが緩み、金属製スクリーンと金型表面とに隙間が生じ、 その間に予備発泡粒子が入り込んで離型時に成形体の欠けが発生して商品価値を 失うとともに、金属製スクリーンの破損を生じる。又、一般の金型の蒸気スリッ ト目詰まりと同様に、冷却水中の無機物及び使用樹脂が金属製スクリーンに堆積 して目詰まりを生じ、定期的に掃除を行う必要があるが、このような金型のメン テナンスを行う際、成形機より金型を取り外し、更に駒を取り外して金属製スク リーンを取り外した後、金型及び金属製スクリーンを掃除し、逆の手順により金 型を組み上げるという、煩雑で多大の作業工数を必要とし、機会損失、費用面で 新たな問題を提起する。Further, in the method described in Japanese Patent Application Laid-Open No. H08-142061, although a welding mark of a fixture on a mold surface attached to a back surface of a metal screen is not transferred to a surface of a molded product, a metal screen is attached to a bolt of the metal screen. When fixing with a nut from the back side of the mold, if the tightening is strong, the metal screen of the mounting part will gradually dent due to the molding pressure and high temperature at the time of molding, and the surface of the molded body will become convex and impair the appearance, On the other hand, if the tightening is weak, the nut will loosen during molding, creating a gap between the metal screen and the mold surface, and pre-expanded particles will enter between them, causing chipping of the molded body during mold release and losing commercial value. , Resulting in damage to the metal screen. In addition, similar to the clogging of the steam slit of a general mold, the inorganic substances and the resin used in the cooling water accumulate on the metal screen to cause clogging, and it is necessary to perform periodic cleaning. When performing mold maintenance, remove the mold from the molding machine, remove the bridge, remove the metal screen, clean the mold and the metal screen, and assemble the mold in the reverse procedure. It is complicated and requires a large number of work steps, and poses new problems in terms of opportunity loss and cost.
【０００５】 本考案は、上記の点に鑑み、金属製スクリーンの金型への取り付け痕が残ると いう問題を解決し、又、金属製スクリーンの金型への取り付け取り外しを容易に するとともに、成形中における金型への金属製スクリーン取り付け部の変形及び 金型表面からの金属製スクリーンの浮き上がりの問題を解決し、外観の良好な成 形体を効率的に得ることができる型内発泡成形用金型及びこれに用いる金型表面 材を提供するものである。[0005] In view of the above points, the present invention solves the problem that a mark of attaching a metal screen to a mold remains, and also facilitates attachment and detachment of a metal screen to a mold. For in-mold foam molding that can solve the problems of deformation of the metal screen attachment part to the mold during molding and lifting of the metal screen from the mold surface, and efficiently obtain a molded body with good appearance. It is intended to provide a mold and a mold surface material used for the mold.
【０００６】[0006]
上記課題を解決するために、本考案の第１は、多孔金属板からなる表面層の裏 面に複数個の凸状係合部品又は凹状係合部品を取り付けて嵌合凸部を設けた金型 表面材と、金型内表面に前記金型表面材の嵌合凸部と凹凸嵌合する凹部又は貫通 孔からなる嵌合凹部を設けた金型とよりなり、前記金型表面材裏面の嵌合凸部を 金型内表面の嵌合凹部に嵌合して金型内表面に金型表面材を固定してなる型内発 泡成形用金型を内容とするものである。 前記、金型内表面の凹部又は貫通孔からなる嵌合凹部内には、金型表面材裏面 の凸状係合部品または凹状係合部品と互いに係合する凹条係合部品又は凸状係合 部品を取り付けることで表面材を金型に固定するか、又は、金型内表面の凹部又 は貫通孔からなる嵌合凹部内に、金型表面材裏面の凸状係合部品と互いに係合す る係合段部を設けることで表面材を金型に固定することができる。 又、金型表面材の裏面に位置決めピンを設けるとともに、金型内表面にピン受 け部を設けてもよい。 In order to solve the above-mentioned problem, a first aspect of the present invention is a metal having a plurality of convex engaging parts or concave engaging parts attached to a back surface of a surface layer made of a porous metal plate to provide a fitting convex part. A mold surface material, and a mold provided with a fitting recess formed of a recess or a through-hole on the inner surface of the mold, the recess or protrusion being fitted into and out of the fitting protrusion of the mold surface material. The present invention includes a mold for in-mold foam molding in which a fitting convex portion is fitted into a fitting concave portion of a mold inner surface and a mold surface material is fixed to the mold inner surface. In the fitting concave portion formed by the concave portion or the through hole on the inner surface of the mold, the concave engaging component or the convex engaging portion that engages with the convex engaging component or the concave engaging component on the rear surface of the mold surface material. Fixing the surface material to the mold by attaching the mating parts, or engaging with the convex engaging parts on the back surface of the mold surface material in the fitting recesses formed by recesses or through holes on the inner surface of the mold. The surface material can be fixed to the mold by providing the engaging step portions that match. Further, a positioning pin may be provided on the back surface of the mold surface material, and a pin receiving portion may be provided on the inner surface of the mold.
【０００７】 本考案の第２は、多孔金属板からなる表面層の裏面に、凸状係合部品又は凹状 係合部品を取り付けて嵌合凸部を設けてなる金型表面材を内容とするものである 。この表面材は、上記型内発泡成形用金型に用いられる。 前記嵌合凸部は、多孔金属板からなる表面層の裏面に複数個の座板を焼結によ り固定し、これら座板に凸状係合部品又は凹状係合部品を取り付けることで設け ることができる。このとき、前記凸状係合部品又は凹状係合部品は、座板に対し て焼結又は溶接、更には、座板に螺設して取り付けることができる。 又、凸状係合部品又は凹状係合部品は、焼結又は溶接により表面層の裏面に直 接取り付けてもよい。 前記表面層の表面又は裏面の周縁部には、金属枠を焼結により固着することが でき、凸状係合部品又は凹状係合部品を前記表面層裏面の周縁部に固着した金属 枠に固定してもよい。 更に、表面層の裏面に位置決めピンを設けることができ、位置決めピンは表面 層の裏面に焼結により固定した座板に設けることもできる。 又、表面層は複数枚の多孔金属板の焼結体からなっていてもよく、多孔金属板 としては、金網及び／又はパンチングメタルを用いることができる。 更に、上記金属表面材の表層部にはフッ素系樹脂をコーティングしておくこと が好ましい。A second aspect of the present invention includes a mold surface material in which a convex engaging part or a concave engaging part is attached to the back surface of a surface layer made of a porous metal plate to provide a fitting convex part. Is the thing. This surface material is used for the mold for in-mold foam molding. The fitting convex portion is provided by fixing a plurality of seat plates to the back surface of the surface layer made of a porous metal plate by sintering, and attaching a convex engaging component or a concave engaging component to these seat plates. Can be At this time, the convex engagement component or the concave engagement component can be sintered or welded to the seat plate, and further, can be screwed and attached to the seat plate. Further, the convex engaging component or the concave engaging component may be directly attached to the back surface of the surface layer by sintering or welding. A metal frame can be fixed to the peripheral edge of the front surface or the rear surface of the surface layer by sintering, and the convex engagement component or the concave engagement component is fixed to the metal frame fixed to the peripheral edge of the rear surface of the surface layer. May be. Further, positioning pins can be provided on the back surface of the surface layer, and the positioning pins can be provided on a seat plate fixed to the back surface of the surface layer by sintering. Further, the surface layer may be made of a sintered body of a plurality of porous metal plates, and a wire mesh and / or a punching metal can be used as the porous metal plate. Further, it is preferable that the surface layer of the metal surface material is coated with a fluororesin.
【０００８】 本考案で使用する凸状係合部品及び凹状係合部品としては、一般の係合部品、 例えばスナップ、割りピン、及びジャック等の形状を有するものが挙げられ、特 に限定されるものではない。The convex and concave engaging parts used in the present invention include general engaging parts such as those having a shape such as a snap, a split pin, and a jack, and are particularly limited. Not something.
【０００９】[0009]
【作用】 本考案は以下のような作用を奏する。 （１）得られる成形体は、金型表面材の多孔金属板の凹凸模様が転写されること で、予備発泡粒子の亀甲模様が解消された外観の良好な成形体となる。 （２）金型表面材は、その裏面に設けた嵌合凸部を金型内表面に設けた嵌合凹部 へ嵌合、係合することで金型表面側から取り付けることができ、更に、表面材の 裏面と金型内表面に位置決めピンと、該ピンを受け入れるピン受け部とを設けれ ば、金型内表面の正確な位置に表面材を取り付け、且つ横ずれを防止することが でき、金型への表面材の取り付け、取り外しが容易となり、金型の整備及び補修 等の作業を極めて効率的に行うことができる。 （３）金型表面材は、その表面層裏面に焼結により固着した座板や凸状係合部品 又は凹状係合部品の固着痕が表面材の表層部に残らず、そのような固着痕が成形 体に現れることがない。 （４）金型表面材の表面層が多孔金属板からなるため、表面層裏面の座板や凸状 係合部品又は凹状係合部品を固着した部分に存在する加熱媒体通過孔は塞がれる ものの、極一部であるので実用上、特に問題ない。 （５）金型表面材の表面層裏面の周縁部に金属枠を固着したものでは、表面層の 周縁部が波うったり、又、表面層が金網の場合にその周縁部の金網がばらけたり することがなく、表面材の形状保持性、耐久性が高まる。 （６）前記金属枠に凸状係合部品又は凹状係合部品を取り付けて嵌合凸部とした ものでは、金型内表面への表面材の取り付けが一層容易となる。 （７）金型表面材の表面層が複数枚の多孔金属板からなる場合には、最下層に溶 接により座板や凸状係合部品又は凹状係合部品を固着しても溶融した金属が表面 材の表層部に廻って溶接痕として残る恐れはなく、又、この場合、座板や凸状係 合部品又は凹状係合部品と接する最下層の加熱媒体通過孔は塞がれるものの、そ の上の層から表面にかけて存在する通過孔は塞がれる恐れはなく、加熱媒体の通 過が阻害されず、融着性の良好な成形体が得られる。 （８）表面材の表層にフッ素樹脂をコーティングすれば、成形体の離型が良好と なる。 （９）従って、本考案の型内発泡形成用金型及び金型表面材によれば、溶接痕の ない良好な外観を有する成形体が得られる。[Operation] The present invention has the following operation. (1) The resulting molded article is a molded article having a good appearance in which the irregular pattern of the pre-expanded particles is eliminated by transferring the concave and convex pattern of the porous metal plate of the mold surface material. (2) The mold surface material can be attached from the mold surface side by fitting and engaging the fitting protrusion provided on the back surface with the fitting recess provided on the inner surface of the mold. If a positioning pin and a pin receiving portion for receiving the pin are provided on the back surface of the surface material and the inner surface of the mold, the surface material can be attached to an accurate position on the inner surface of the mold, and lateral displacement can be prevented. Attachment and removal of the surface material to and from the mold become easy, and work such as maintenance and repair of the mold can be performed extremely efficiently. (3) In the mold surface material, no fixing mark of the seat plate, the convex engaging component, or the concave engaging component fixed to the back surface of the surface layer by sintering remains on the surface layer of the surface material. Does not appear on the compact. (4) Since the surface layer of the mold surface material is made of a porous metal plate, the heating medium passage holes existing on the rear surface of the surface layer at the portion where the seat plate and the convex or concave engaging parts are fixed are closed. However, there is no problem in practical use because it is a very small part. (5) In the case where a metal frame is fixed to the periphery of the back surface of the surface layer of the mold surface material, the periphery of the surface layer is wavy, and when the surface layer is a wire mesh, the periphery of the wire mesh is loose. The surface material retains its shape and its durability is improved. (6) When the metal frame is fitted with a convex engaging part or a concave engaging part to form a fitting convex part, the attachment of the surface material to the inner surface of the mold becomes easier. (7) When the surface layer of the mold surface material is composed of a plurality of perforated metal plates, even if the seat plate, the convex engaging component or the concave engaging component is fixed to the lowermost layer by welding, the molten metal is formed. There is no danger of welding marks remaining around the surface layer of the surface material, and in this case, the lowermost heating medium passage hole in contact with the seat plate, the convex engaging part or the concave engaging part is closed, There is no fear that the through-holes existing from the upper layer to the surface will be blocked, and the passage of the heating medium will not be hindered, and a molded body with good fusibility can be obtained. (8) If the surface layer of the surface material is coated with a fluororesin, the mold release of the molded body is improved. (9) Therefore, according to the mold for foam formation in the mold and the mold surface material of the present invention, a molded article having a good appearance without welding marks can be obtained.
【００１０】[0010]
以下、本考案の各種実施の形態を図面に基づいて更に詳細に説明するが、これ らは本考案を何ら限定するものではない。 Hereinafter, various embodiments of the present invention will be described in more detail with reference to the drawings, but these embodiments do not limit the present invention in any way.
【００１１】 図１は金型表面材の１実施例を示す断面図、図２は図１の金型表面材の底面図 である。これらの図に示す金型表面材１は、表面層（図では金網）２の裏面に複 数個の座板３を焼結により固着し、座板３にスナップ式の凸状係合部品４を溶接 して嵌合凸部としたものであり、凸状係合部品４は座板３へ焼結、その他、後述 する螺設構造（図６参照）により固定してもよい。座板３及び凸状係合部品４は 金型表面材１を金型に取り付けるのに充分な数が設けられる。表面層２の周縁部 （図例のものでは表面層２の裏面）には金属枠５が焼結されていることが好まし く、これにより周縁部が波打ったり、ばらけたりするのを防止でき、表面材の形 状保持性、耐久性が高められる。尚、金属枠５にも凸状係合部品４を取り付ける ことができ、これにより金型表面材１の金型への取り付けが一層容易となる場合 がある。FIG. 1 is a sectional view showing one embodiment of a mold surface material, and FIG. 2 is a bottom view of the mold surface material of FIG. In the mold surface material 1 shown in these figures, a plurality of seat plates 3 are fixed to the back surface of a surface layer (a wire mesh in the figure) 2 by sintering, and a snap-type convex engagement part 4 is attached to the seat plate 3. Are welded to form a fitting projection, and the projection engaging part 4 may be fixed to the seat plate 3 by sintering or by a screwing structure (see FIG. 6) described later. The seat plate 3 and the convex engaging parts 4 are provided in a sufficient number to attach the mold surface material 1 to the mold. It is preferable that the metal frame 5 is sintered on the peripheral portion of the surface layer 2 (the back surface of the surface layer 2 in the illustrated example), thereby preventing the peripheral portion from waving or breaking. Can be prevented, and the shape retention and durability of the surface material can be improved. In addition, the convex engagement part 4 can be attached to the metal frame 5, which may make it easier to attach the mold surface material 1 to the mold.
【００１２】 図３は金型表面材１の他の実施例を示す断面図で、表面層２は金網２ａからな る表層部と金網２ｂとからなる下層部とが焼結により一体化された積層体となっ ている。金網の積層枚数は、金型表面材としての強度及び加熱媒体の通過し易さ を考慮して２〜６枚とするのが適当である。表層部を金網２ａとしたのは、金網 ２ａの凹凸が成形体に現れる発泡粒子の亀甲模様をより効果的に消し得るからで ある。金網２ａ，２ｂの網目は、積層枚数により異なるが、通常４〜１００メッ ンュ、好ましくは６〜３０メッシュ程度とし、両者の網目は必ずしも同じにする 必要はない。FIG. 3 is a cross-sectional view showing another embodiment of the mold surface material 1. The surface layer 2 has a surface portion made of a wire mesh 2 a and a lower layer portion made of a wire mesh 2 b integrated by sintering. It is a laminate. The number of laminated wire meshes is suitably 2 to 6 in consideration of the strength as a mold surface material and the ease of passage of a heating medium. The surface layer is made of the wire netting 2a because the unevenness of the wire netting 2a can more effectively eliminate the crevices of the foamed particles appearing in the molded product. The meshes of the wire meshes 2a and 2b vary depending on the number of layers, but are usually about 4 to 100 meshes, preferably about 6 to 30 meshes, and the meshes of both need not necessarily be the same.
【００１３】 図４は金型表面材１の他の実施例を示す断面図で、表面層２の周縁部には、そ の表面から裏面にかけて金属枠５を焼結により固定し、かつ、嵌合凸部としての 凸状係合部品４は表面層２の裏面に直接溶接して取り付けたものであり、凸状係 合部品４は表面層２の裏面に焼結により取り付けてもよい。FIG. 4 is a cross-sectional view showing another embodiment of the mold surface material 1. A metal frame 5 is fixed to the peripheral portion of the surface layer 2 from the front surface to the back surface by sintering and fitted. The convex engaging part 4 as the convex part is directly welded and attached to the back surface of the surface layer 2, and the convex engaging part 4 may be attached to the back surface of the surface layer 2 by sintering.
【００１４】 図５は金型表面材１の更に他の実施例を示す断面図である。この図に示す金型 表面材１においては、表面層２が金網２ａからなる表層部とパンチングメタル２ ｃからなる下層部とが焼結により一体化された積層体となっている。このパンチ ングメタル２ｃは加熱媒体通過孔２ｄとして４ｃｍ2 当たり１〜８００個程度、 好ましくは４〜４００個程度の細孔を設けたものが望ましい。嵌合凸部としての 凸状係合部品４の取り付け方法は図１に示したものと同様である。FIG. 5 is a sectional view showing still another embodiment of the mold surface material 1. In the mold surface material 1 shown in this figure, the surface layer 2 is a laminate in which a surface layer portion made of a wire mesh 2a and a lower layer portion made of a punched metal 2c are integrated by sintering. It is desirable that the punching metal 2c be provided with about 1 to 800, preferably about 4 to 400 pores per 4 cm 2 as the heating medium passage hole 2d. The mounting method of the convex engaging part 4 as the fitting convex part is the same as that shown in FIG.
【００１５】 図６は嵌合凸部としての凸状係合部品４を表面層２の裏面に固着した金型表面 材１の他の実施例を示す断面図で、１枚の金網からなる表面層２の裏面に座板３ を焼結により固着し、座板３には雌ねじ部３ａを設け、凸状係合部品４には雌ね じ部４ａを設けて、雄ねじ６により螺設し嵌合凸部を設けたものである。尚、表 面層２は、図３〜５に示した実施例と同様に複数の多孔金属板の焼結積層体から なっていてもよい。FIG. 6 is a cross-sectional view showing another embodiment of a mold surface material 1 in which a convex engaging part 4 as a fitting convex portion is fixed to the back surface of the surface layer 2. A seat plate 3 is fixed to the back surface of the layer 2 by sintering, a female screw portion 3a is provided on the seat plate 3, a female screw portion 4a is provided on the convex engagement part 4, and the male screw 6 is screwed and fitted. A convex portion is provided. The surface layer 2 may be made of a sintered laminate of a plurality of porous metal plates as in the embodiment shown in FIGS.
【００１６】 図７は表面層２の裏面に固着した他の凸状係合部品（割ピン式）７により嵌合 凸部を設けた金型表面材１の実施例を示す断面図である。表面層２の裏面に焼結 により固定した座板３への凸状係合部品７の固着方法は図１と同様に溶接である 。又、凸状係合部品７は焼結により座板３へ固定してもよいし、図６に示すよう に、座板３に凸状係合部品７を螺設して嵌合凸部としてもよい。更に、表面層２ は、複数の多孔金属板からなっていてもよい。FIG. 7 is a cross-sectional view showing an embodiment of the mold surface material 1 provided with a convex fitting portion by another convex engaging part (split pin type) 7 fixed to the back surface of the surface layer 2. The method of fixing the convex engaging component 7 to the seat plate 3 fixed to the back surface of the surface layer 2 by sintering is welding as in FIG. The convex engaging part 7 may be fixed to the seat plate 3 by sintering, or as shown in FIG. 6, the convex engaging part 7 is screwed to the seat plate 3 to form a fitting convex part. Is also good. Further, the surface layer 2 may be composed of a plurality of perforated metal plates.
【００１７】 図８は金型表面材１の表面層２の裏面に固着した他の凸状係合部品（ジャック 式）８により嵌合凸部を設けた実施例を示す金型表面材１の断面図である。この ジャック式の凸状係合部品８には、Ｏリング９が外嵌してある。凸状係合部品８ の固着方法は図１と同様であるが、凸状係合部品８は焼結により座板３へ固定し てもよいし、座板３へ凸状係合部品８を螺設して嵌合凸部としてもよく、更に、 表面層２は複数の多孔金属板からなっていてもよい。FIG. 8 shows an embodiment in which a fitting convex portion is provided by another convex engaging part (jack type) 8 fixed to the back surface of the surface layer 2 of the mold surface material 1. It is sectional drawing. An O-ring 9 is externally fitted to the jack type convex engagement part 8. The method of fixing the convex engaging part 8 is the same as that of FIG. 1, but the convex engaging part 8 may be fixed to the seat plate 3 by sintering, or the convex engaging part 8 may be fixed to the seat plate 3. The fitting layer may be formed by screwing, and the surface layer 2 may be formed of a plurality of porous metal plates.
【００１８】 次に、図９〜図１１は、金型内表面部材の各種実施例を示す金型要部の断面図 である。先ず、図９に示すものは、金型内表面部材１３ａに嵌合凹部としての凹 部１３ｃを設け、凹部１３ｃの底面より金型内表面部材１３ａ裏面に貫通する穴 又は雌ねじ部１３ｄを設け、雌ねじ部１０ａを設けた凹状係合部品（スナップ式 ）１０を金型内表面部材１３ａの凹部１３ｃに挿入してボルト１２で螺設したも のであり、凹状係合部品１０の凹部１０ｂの開口内縁には番線１１が内嵌されて いる。この凹状係合部品１０は、図１〜図６に示した凸状係合部品４と互いに嵌 合・係合して表面材１を固定することができる。Next, FIGS. 9 to 11 are cross-sectional views of a main part of a mold showing various examples of the inner surface member of the mold. First, as shown in FIG. 9, a concave portion 13c as a fitting concave portion is provided in the mold inner surface member 13a, and a hole or a female screw portion 13d penetrating from the bottom surface of the concave portion 13c to the back surface of the mold inner surface member 13a is provided. The recessed engagement part (snap type) 10 provided with the female screw part 10a is inserted into the recess 13c of the mold inner surface member 13a and screwed with the bolt 12, and the inner edge of the opening of the recess 10b of the recessed engagement part 10 is formed. The number line 11 is fitted inside. The concave engaging part 10 can be fitted and engaged with the convex engaging part 4 shown in FIGS. 1 to 6 to fix the surface material 1.
【００１９】 図１０は金型内表面部材１３ａの他の実施例を示す金型要部の断面図で、金型 内表面部材１３ａに嵌合凹部としての貫通孔１３ｅを設け、貫通孔１３ｅに、開 口内縁に係合段部１９ａを設けたパイプ状係合部品１９を貫入・固着したもので ある。このパイプ状の凹状係合部品１９は、図７に示した割ピン式凸状係合部品 ７及び図８に示したジャック式凸状係合部品８を嵌合・係合して表面材１を固定 することができる。又、図１１に示すように、金型内表面部材１３ａに、その開 口内縁に係合段部１３ｆを設けた貫通孔１３ｅを形成して嵌合凹部とし、割ピン 式凸状係合部品７又はジャック式凸状係合部品８からなる嵌合凸部を貫通孔１３ ｅに直接嵌合・係合して凹状係合部品を省略することもできる。FIG. 10 is a sectional view of a main part of the mold showing another embodiment of the inner surface member 13a of the mold. A through hole 13e as a fitting recess is provided in the inner surface member 13a of the mold, and the through hole 13e is formed in the through hole 13e. A pipe-shaped engaging part 19 provided with an engaging step 19a on the inner edge of the opening is penetrated and fixed. The pipe-shaped concave engaging part 19 fits and engages the split pin type convex engaging part 7 shown in FIG. 7 and the jack type convex engaging part 8 shown in FIG. Can be fixed. As shown in FIG. 11, a through hole 13e having an engagement step 13f formed on the inner surface of the opening is formed in the mold inner surface member 13a to form a fitting recess. It is also possible to omit the concave engaging part by directly engaging and engaging the engaging convex part formed of the convex engaging part 7 or the jack type convex engaging part 8 with the through hole 13e.
【００２０】 以上の実施例では、凸状係合部品４、割りピン式凸状係合部品７、ジャック式 凸状係合部品８を、それぞれ金型表面材１の表面層２の裏面に直接、又は座板３ もしくは金属枠５を介して取り付けて嵌合凸部とする一方、凹条係合部品１０又 は凹状係合部品１９を金型内表面部材１３ａに形成した凹部１３ｃ又は貫通孔１ ３ｅからなる嵌合凹部内に取り付けているが、前記凸状係合部品４、７、９を金 型内表面部材１３ａの嵌合凹部としての凹部１３ｃ又は貫通孔１３ｅ内に取り付 ける一方、前記凹状係合部品１０又は１９を金型表面材１の嵌合凸部として表面 層２の裏面に取り付けるようにしてもよい。In the above embodiment, the convex engaging part 4, the split pin type convex engaging part 7, and the jack type convex engaging part 8 are respectively provided directly on the back surface of the surface layer 2 of the mold surface material 1. Or a fitting projection formed by mounting the fitting via the seat plate 3 or the metal frame 5, or a recess 13 c or a through hole formed in the mold inner surface member 13 a by using the concave strip engaging component 10 or the concave engaging component 19. 13e, the convex engaging parts 4, 7, 9 are mounted in a concave 13c or a through hole 13e as a fitting concave of the mold inner surface member 13a. Alternatively, the concave engaging part 10 or 19 may be attached to the rear surface of the surface layer 2 as a fitting convex part of the mold surface material 1.
【００２１】 尚、金型１３の内表面部材１３ａ及び金型表面材１の一部又は全面には、フッ 素系樹脂をコーティングして成形体の離型性を良くするのが好ましい。このフッ 素系樹脂としては、４フッ化エチレン−６フッ化プロピレン共重合樹脂、４フッ 化エチレン樹脂等が挙げられる。It is preferable that the inner surface member 13a of the mold 13 and a part or the entire surface of the mold surface material 1 are coated with a fluorine-based resin to improve the releasability of the molded body. Examples of the fluorine-based resin include a tetrafluoroethylene-hexafluoropropylene copolymer resin and a tetrafluoroethylene resin.
【００２２】 次に、本考案の型内発泡成形用金型の１実施例を図１２に示す。この図の成形 用金型１５は、コア金型１３とキャビティ金型１４とからなっており、コア金型 １３の金型内表面部材１３ａの水平部の金型内表面に本考案の金型表面材１が取 り付けられている。尚、１７は蒸気孔で、成形空間１８を形成するコア金型１３ の金型内表面部材１３ａ及びキャビティ金型１４の内壁１４ａに複数個穿設され ている。Next, one embodiment of the mold for in-mold foam molding of the present invention is shown in FIG. The molding die 15 shown in this figure comprises a core die 13 and a cavity die 14, and the die of the present invention is provided on the inner surface of the horizontal portion of the die inner surface member 13a of the core die 13. Surface material 1 is attached. Reference numeral 17 denotes a steam hole, a plurality of which are formed in the mold inner surface member 13a of the core mold 13 and the inner wall 14a of the cavity mold 14 which form the molding space 18.
【００２３】 金型表面材１は、コア金型１３に金型内表面部材１３ａを取り付けた後、金型 内表面部材１３ａの表面側から容易に取り付けることができ、又、取り外すこと ができる。After the mold inner surface member 13 a is attached to the core mold 13, the mold surface material 1 can be easily attached from the front side of the mold inner surface member 13 a and can be removed.
【００２４】 図１３は、金型１３への金型表面材１の取り付け構造の１実施例を示している 。即ち、金型内表面部材１３ａに形成した嵌合凹部としての凹部１３ｃは、金型 表面材１に固着した座板３及び嵌合凸部としての凸状係合部品４又は凹状係合部 品１０が入る充分な大きさを有し、凹部１３ｃには、凹状係合部品１０又は凸状 係合部品４が、凹部１３ｃの底面より金型内表面部材１３ａの裏面に貫通する穴 又は雌ねじ部１３ｄに貫挿又は螺挿したボルト１２に螺設されており、この凹状 係合部品１０又は凸状係合部品４へ、金型表面材１の表面層２の裏面に座板３を 介して、あるいは直接表面層２の裏面に固定された凸状係合部品４又は凹状係合 部品１０が嵌合・係合することで、金型１３の内表面部材１３ａの表面１３ｂに 金型表面材１が取り付けられる。金型表面材１は、金型内表面部材表面１３ｂに 密着させるようボルト１２で係合高さを調整することが出来る。金型内表面部材 １３ａの凹部１３ｃには座板３を挿入できる座ぐり部１３ｇを設けていてもよい 。FIG. 13 shows an embodiment of a structure for attaching the mold surface material 1 to the mold 13. That is, the concave portion 13c as the fitting concave portion formed in the mold inner surface member 13a is the seat plate 3 fixed to the mold surface material 1 and the convex engaging component 4 or the concave engaging component as the fitting convex portion. The recess 13c has a sufficient size, and the recess 13c has a hole or a female threaded portion through which the recessed engaging part 10 or the convex engaging part 4 penetrates from the bottom surface of the recess 13c to the back surface of the mold inner surface member 13a. 13d is screwed into a bolt 12 inserted or screwed into the concave engaging part 10 or the convex engaging part 4 via the seat plate 3 on the back surface of the surface layer 2 of the mold surface material 1. Alternatively, the convex engagement part 4 or the concave engagement part 10 directly fixed to the back surface of the surface layer 2 is fitted and engaged, so that the surface 13b of the inner surface member 13a of the mold 13 is 1 is attached. The engaging height of the mold surface material 1 can be adjusted by the bolts 12 so as to be in close contact with the mold inner surface member surface 13b. A counterbore 13g into which the seat plate 3 can be inserted may be provided in the recess 13c of the mold inner surface member 13a.
【００２５】 図１４は、図１３における金型表面材１を金型内表面部材１３ａに対して、よ り精度よく取り付けるための１例である。即ち、金型表面材１の表面層２の裏面 に座板２０を焼結して固着し、更に座板２０に位置決めピン２１を溶接、焼結等 により固着しておく。一方、金型内表面部材１３ａには座ぐり部２２ａを有する 細穴２２ｂを設けてピン受け部２２とし、ピン受け部２２の細穴２２ｂに金型表 面材１の位置決めピン２１を挿入して、取り付け位置を決定する。尚、ピン受け 部２２の細穴２２ｂは貫通孔であってもよい。FIG. 14 is an example for more accurately attaching the mold surface material 1 in FIG. 13 to the mold inner surface member 13a. That is, the seat plate 20 is sintered and fixed to the back surface of the surface layer 2 of the mold surface material 1, and the positioning pins 21 are further fixed to the seat plate 20 by welding, sintering or the like. On the other hand, a thin hole 22b having a counterbore 22a is provided in the inner surface member 13a of the mold to form a pin receiving portion 22, and the positioning pin 21 of the die surface material 1 is inserted into the thin hole 22b of the pin receiving portion 22. To determine the mounting position. Note that the narrow hole 22b of the pin receiving portion 22 may be a through hole.
【００２６】 図１５及び図１６は、金型表面材１の表面層２裏面に他の凸状係合部品７、８ 又は凹状係合部品１９を取り付けた場合の金型表面材１の金型１３への取り付け 構造の例を示しており、これらの場合にも、図示していないが、図１４と同様に 位置決めピンを並設することもできる。FIGS. 15 and 16 show the mold of the mold surface material 1 when another convex engaging part 7, 8 or concave engaging part 19 is attached to the back surface of the surface layer 2 of the mold surface material 1. 13 shows an example of a mounting structure, and in these cases, though not shown, positioning pins can be juxtaposed similarly to FIG.
【００２７】 尚、金型内表面部材１３ａの表面１３ｂに水平に近い傾斜が存在する場合には 、この傾斜面に金型表面材１を取り付けるのが好ましい。この傾斜面も成形体の 外観を大きく左右するからである。When the surface 13b of the mold inner surface member 13a has a near-horizontal inclination, it is preferable to attach the mold surface material 1 to the inclined surface. This is because the inclined surface also greatly affects the appearance of the molded body.
【００２８】[0028]
以下、実施例に基づいて本考案を更に詳細に説明する。 Hereinafter, the present invention will be described in more detail based on embodiments.
【００２９】 （実施例１） 図３に示すように、１６メッシュ金網２ａ（２枚）及び８メッシュ金網２ｂ（ １枚）を焼結して得た積層体からなる表面層２の裏面（８メッシュ側）に座板３ を焼結により固着し、座板３に凸状係合部品４を溶接により固着した金型表面材 １を、図１３に示すようにコア金型１３の内表面に設けた凹部１３ｃ内に取り付 けた凹状係合部品１０に凸状係合部品４を嵌合・係合することで金型１３の表面 側から固定し、図１２に示す如き構造の成形用金型１５を得た。尚、金型表面材 １全面及び金型内側表面に４フッ化エチレン−６フッ化プロピレン共重合樹脂を コーティングした。 次に、ポリオレフィン系樹脂予備発泡粒子「エペランＰＰ（鐘淵化学工業株式 会社製、発泡倍率３０倍）」を予め耐圧容器内に入れて蒸気圧で内圧２Ｋｇ／ｃ ｍ2 を付与したものを上記成形用金型１５のコア金型１３とキャビティ金型１４ との間隙を４ｍｍとした状態で成形空間１８内にクラッキング充填した後、コア 金型１３、キャビティ金型１４を型締めし、下記の条件で成形した。 一方加熱 １．０Ｋｇ／ｃｍ2 逆一方加熱 １．２Ｋｇ／ｃｍ2 両面加熱 ３．０Ｋｇ／ｃｍ2 保熱 ５秒 予冷 ３秒 水冷 １００秒 放冷 ２０秒 得られた成形体は、１６メッシュの金網の網目が成形体表面に転写され、発泡 粒子の亀甲模様や蒸気孔の痕がなく、又、金型表面材１の凸状係合部品４の固着 痕の全く認められない優れた外観を有するものであった。更に、１０００ショッ トまで金型表面材１の凸状係合部品４の固着部の凹状化及び金型表面材１が離型 時に金型より脱落することは認められなかった。Example 1 As shown in FIG. 3, the back surface (8) of a surface layer 2 made of a laminate obtained by sintering a 16-mesh wire mesh 2a (two pieces) and an 8-mesh wire mesh 2b (one piece) The mold surface material 1 in which the seat plate 3 is fixed to the mesh side by sintering, and the convex engaging part 4 is fixed to the seat plate 3 by welding, is attached to the inner surface of the core mold 13 as shown in FIG. The convex engaging part 4 is fitted and engaged with the concave engaging part 10 mounted in the provided concave part 13c, thereby fixing the convex part 4 from the front side of the mold 13 and forming a metal mold having a structure as shown in FIG. Mold 15 was obtained. The entire surface of the mold surface material 1 and the inner surface of the mold were coated with a copolymer of ethylene tetrafluoride and propylene hexafluoride. Next, polyolefin-based resin pre-expanded particles “Eperan PP (manufactured by Kanegafuchi Chemical Co., Ltd., expansion ratio: 30 times)” previously placed in a pressure-resistant container and given an internal pressure of 2 kg / cm 2 by vapor pressure are described above. After cracking and filling into the molding space 18 with the gap between the core mold 13 and the cavity mold 14 of the molding mold 15 being 4 mm, the core mold 13 and the cavity mold 14 are clamped. Molded under the conditions. One-side heating 1.0 kg / cm 2 Reverse one-side heating 1.2 kg / cm 2 Double-sided heating 3.0 kg / cm 2 Heat retention 5 seconds Pre-cooling 3 seconds Water cooling 100 seconds Cool-down 20 seconds The obtained molded body is a 16 mesh wire mesh. Is transferred to the surface of the molded body, and has an excellent appearance in which there are no crevices or foam holes in the foamed particles, and no sticking marks of the convex engaging parts 4 of the mold surface material 1 are observed at all. Was something. Further, up to 1000 shots, it was not recognized that the fixing portion of the convex engaging part 4 of the mold surface material 1 was concaved and that the mold surface material 1 fell off the mold when the mold was released.
【００３０】 （実施例２） 図５に示すように、１６メッシュの金網２ａ（１枚）と厚みｌｍｍのパンチン グメタル２ｃ（孔径４ｍｍ，ピッチ１５ｍｍ）からなる焼結積層体（表面層２） の裏面（パンチングメタル２ｃ側）に座板３を焼結して固着し、その座板３に凸 状係合部品４を溶接により固着した金型表面材１を使用し、ポリオレフィン系樹 脂予備発泡粒子として「エペランＸＬ（鐘淵化学工業株式会社製，発泡倍率３５ 倍）」を使用し、下記成形条件とした以外は実施例１と同様の方法で金型に取り 付け、成形した。尚、金型表面材全面及び金型内側表面には４フッ化ポリエチレ ン−６フッ化ポリプロピレン共重合樹脂をコーティングした。 一方加熱 ０．５Ｋｇ／ｃｍ2 逆一方加熱 ０．８Ｋｇ／ｃｍ2 両面加熱 １．１Ｋｇ／ｃｍ2 保熱 ５秒 予冷 ３秒 水冷 ８０秒 放冷 １０秒 得られた成形体は、実施例１と同様美麗な外観を有するものであった。又、 １０００ショットまで金型表面材１裏面の凸状係合部品４の固着部の変形及び離 型時の金型１３からの金型表面材１の脱落は認められなかった。Example 2 As shown in FIG. 5, a sintered laminate (surface layer 2) composed of a 16 mesh wire mesh 2a (one sheet) and a 1 mm thick punching metal 2c (hole diameter 4 mm, pitch 15 mm). The seat plate 3 is sintered and fixed to the back surface (the punching metal 2c side), and the die surface material 1 in which the convex engaging parts 4 are fixed to the seat plate 3 by welding is used, and a polyolefin resin prefoaming is performed. "Eperan XL (manufactured by Kanegafuchi Chemical Industry Co., Ltd., expansion ratio: 35 times)" was used as the particles, and the particles were attached to a mold and molded in the same manner as in Example 1 except that the molding conditions described below were used. The entire surface of the mold surface and the inner surface of the mold were coated with a polytetrafluoroethylene-6-fluoropolypropylene copolymer resin. One-side heating 0.5 kg / cm 2 Reverse one-side heating 0.8 kg / cm 2 Double-sided heating 1.1 kg / cm 2 Heat retention 5 seconds Pre-cooling 3 seconds Water cooling 80 seconds Cool-down 10 seconds The obtained molded body was the same as in Example 1. It had a beautiful appearance as well. In addition, no deformation of the fixing portion of the convex engaging part 4 on the back surface of the mold surface material 1 and no drop of the mold surface material 1 from the mold 13 at the time of mold release was observed until 1000 shots.
【００３１】 （比較例） １６メッシュ金網（２枚）及び８メッシュ金網（１枚）を焼結して得た積層体 からなる表層層の裏面（８メッシュ側）にボルトを溶接した金型表面材１をコア 金型１３の内表面に部分的にコア金型１３の裏面側からナットにより取り付け、 図１２に示す如き構造（但し、表面材１の金型１３への取付構造は異なる）の成 形用金型１５を得た。尚、金型表面材１全面及び金型内側表面には４フッ化ポリ エチレン−６フッ化ポリプロピレン共重合樹脂をコーティングした。 次に、ポリオレフィン系樹脂予備発泡粒子「エペランＰＰ（鐘淵化学工業株式 会社製、発泡倍率３０倍）」を予め耐圧容器内に入れ、蒸気圧で内圧２Ｋｇ／ｃ ｍ2 を付与したものを上記成形用金型１５のコア金型１３とキャビティ金型１４ との間隙を４ｍｍとした状態でクラッキング充填した後、コア金型１３、キャビ ティ金型１４を型締めし、下記の条件で成形した。 一方加熱 １．０Ｋｇ／ｃｍ2 逆一方加熱 １．２Ｋｇ／ｃｍ2 両面加熱 ３．０Ｋｇ／ｃｍ2 保熱 ５秒 予冷 ３秒 水冷 １００秒 放冷 ２０秒 得られた成形体は、１６メッシュの金網の網目が成形体表面に転写され、発泡 粒子の亀甲模様や蒸気孔の痕はなく、又、ボルトの溶接痕のない美麗な外観を有 するものであった。しかし、４００ショットより金型表面材１の表面層裏面のボ ルト固着部が金型表面部材側に凹み、成形体表面が凸状化し始め、外観を損なう ものとなった。(Comparative Example) A die surface with bolts welded to the back surface (8 mesh side) of a surface layer composed of a laminate obtained by sintering a 16 mesh wire mesh (2 pieces) and an 8 mesh wire mesh (1 piece). The material 1 is partially attached to the inner surface of the core mold 13 from the back surface side of the core mold 13 with a nut, and has a structure as shown in FIG. 12 (however, the structure of attaching the surface material 1 to the mold 13 is different). A molding die 15 was obtained. The entire surface of the mold surface material 1 and the inner surface of the mold were coated with a polytetrafluoroethylene-6-fluoropolypropylene copolymer resin. Next, the polyolefin-based resin pre-expanded particles “Eperan PP (manufactured by Kaneka Chemical Co., Ltd., expansion ratio: 30 times)” were previously placed in a pressure-resistant container, and those having an internal pressure of 2 kg / cm 2 applied with a vapor pressure were subjected to the above-mentioned method. After cracking and filling with a gap of 4 mm between the core mold 13 and the cavity mold 14 of the molding mold 15, the core mold 13 and the cavity mold 14 were clamped and molded under the following conditions. . One-side heating 1.0 kg / cm 2 Reverse one-side heating 1.2 kg / cm 2 Double-sided heating 3.0 kg / cm 2 Heat retention 5 seconds Pre-cooling 3 seconds Water cooling 100 seconds Cool-down 20 seconds The obtained molded body is a 16 mesh wire mesh. The mesh was transferred to the surface of the molded product, and there was no crevices of the foamed particles or traces of vapor holes, and it had a beautiful appearance with no welding traces of bolts. However, from 400 shots, the bolt fixing portion on the back surface of the surface layer of the mold surface material 1 was dented toward the mold surface member side, and the surface of the molded body began to be convex, resulting in impaired appearance.
【００３２】[0032]
本考案は、以上のように構成されているので、以下の利点を有する。 １）金型表面材は金型内表面に凹凸嵌合により取り付けられるので、ボルトや ナットを用いて締めつける場合のように過度な力で取り付けられることがなく、 繰り返し成形中に取り付け部の凹みによる成形体表面の凸状化を防止でき、又、 目詰まり等の整備作業は、金型内表面部材を取り外すことなく金型表面材を容易 に取り外して行うことができるので、作業効率は大幅に向上する。 ２）金型表面材の表面層が多孔金属板からなるので、表面層裏面の座板や凸状 係合部品又は凹状係合部品を固着した部分の加熱媒体通過孔が塞がれても極僅か であり、更に、表面層を複数枚の多孔金属板を焼結して積層体とした場合は、座 板や凸状係合部品又は凹状係合部品の上層部から表面にかけての加熱媒体の通過 孔は塞がれていない。従って、成形時に加熱媒体の通過は殆ど阻害されることは なく、融着性の良好な成形体が得られる。 ３）金型表面材の裏面に焼結により座板を固着し、座板に凸状係合部品又は凹 状係合部品を溶接又は螺設により固着することで嵌合凸部としたものでは、金型 表面材の表層部に嵌合凸部の取付痕が残らない。従って、良好な外観を有する成 形体が得られる。 尚、複数枚の多孔金属板からなる焼給積層体金型表面材の裏面に、直接凸状係 合部品又は凹状係合部品を溶接して嵌合凸部とする場合も同様である。 ４）金型表面材の表面層が金網からなる場合に、金網の周縁部に金属枠を焼結 すると、周縁部の針金がばらけたり波打ったりするのを防ぐことができる。又、 この金属枠に凸状係合部品又は凹状係合部品を固着して嵌合凸部とし、金型内表 面への取り付けに利用することもできる。 ５）金型表面材の表面層を金網にすると、金網の凹凸が成形体表面の発泡粒子 の亀甲模様を効果的に消去する。 Since the present invention is configured as described above, it has the following advantages. 1) Since the mold surface material is attached to the mold inner surface by uneven fitting, it is not attached with excessive force unlike the case of tightening with bolts and nuts. Since the convexity of the molded body surface can be prevented, and maintenance work such as clogging can be performed by easily removing the mold surface material without removing the mold inner surface member, the work efficiency is greatly improved. improves. 2) Since the surface layer of the mold surface material is made of a porous metal plate, even if the heating medium passage hole in the portion to which the seat plate or the convex or concave engaging component is fixed on the back surface of the surface layer is closed, In the case where the surface layer is a laminate formed by sintering a plurality of porous metal plates, a heating medium from the upper layer to the surface of the seat plate, the convex engagement component or the concave engagement component is used. The passage hole is not blocked. Therefore, the passage of the heating medium during molding is hardly hindered, and a molded body having good fusion property can be obtained. 3) In the case where the seat plate is fixed to the back surface of the mold surface material by sintering, and the convex engaging component or the concave engaging component is fixed to the seat plate by welding or screwing to form a fitting convex portion. In addition, no trace of the fitting projection is left on the surface layer of the mold surface material. Therefore, a molded article having a good appearance can be obtained. The same applies to the case where a convex engaging component or a concave engaging component is directly welded to the back surface of a surface of a fired laminate die surface material composed of a plurality of porous metal plates to form a fitting convex portion. 4) When the surface layer of the mold surface material is made of a wire mesh, sintering the metal frame around the wire mesh can prevent the wire around the wire from breaking or waving. Further, a convex engaging part or a concave engaging part may be fixed to the metal frame to form a fitting convex part, which can be used for mounting on the inner surface of the mold. 5) When the surface layer of the mold surface material is a wire mesh, the unevenness of the wire mesh effectively eliminates the crevices of the foamed particles on the surface of the molded product.
【図１】 本考案の金型表面材の実施例を示す模式的断
面図である。FIG. 1 is a schematic sectional view showing an embodiment of a mold surface material of the present invention.
【図２】 図１の金型表面材の底面図である。FIG. 2 is a bottom view of the mold surface material of FIG. 1;
【図３】 本考案の金型表面材の他の実施例を示す模式
的断面図である。FIG. 3 is a schematic sectional view showing another embodiment of the mold surface material of the present invention.
【図４】 本考秦の金型表面材の他の実施例を示す模式
的断面図である。FIG. 4 is a schematic cross-sectional view showing another embodiment of the mold surface material of the present invention.
【図５】 本考案の金型表面材の他の実施例を示す模式
的断面図である。FIG. 5 is a schematic sectional view showing another embodiment of the mold surface material of the present invention.
【図６】 本考案の金型表面材裏面の嵌合凸部の他の実
施例を示す表面材要部の模式的断面図である。FIG. 6 is a schematic cross-sectional view of a main part of the surface material showing another embodiment of the fitting projection on the back surface of the mold surface material of the present invention.
【図７】 本考案の金型表面材裏面の嵌合凸部の他の実
施例を示す表面材要部の模式的断面図である。FIG. 7 is a schematic cross-sectional view of a main part of the surface material showing another embodiment of the fitting protrusion on the back surface of the mold surface material of the present invention.
【図８】 本考案の金型表面材裏面の嵌合凸部の他の実
施例を示す表面材要部の模式的断面図である。FIG. 8 is a schematic cross-sectional view of a main part of the surface material showing another embodiment of the fitting projection on the back surface of the mold surface material of the present invention.
【図９】 本考案の金型における内表面部材の嵌合凹部
の実施例を示す金型要部の模式的断面図である。FIG. 9 is a schematic cross-sectional view of a main part of the mold showing an embodiment of a fitting recess of an inner surface member in the mold of the present invention.
【図１０】 本考案の金型における内表面部材の嵌合凹
部の他の実施例を示す金型要部の模式的断面図である。FIG. 10 is a schematic cross-sectional view of a main part of the mold showing another embodiment of the fitting recess of the inner surface member in the mold of the present invention.
【図１１】 本考案の金型における内表面部材の嵌合凹
部の他の実施例を示す金型要部の模式的断面図である。FIG. 11 is a schematic cross-sectional view of a main part of the mold showing another embodiment of the fitting recess of the inner surface member in the mold of the present invention.
【図１２】 本考案の金型の実施例を示す模式的断面図
である。FIG. 12 is a schematic sectional view showing an embodiment of the mold of the present invention.
【図１３】 本考案の金型表面材と金型内表面部材との
取り付け構造の実施例を示す金型要部の模式的断面図で
ある。FIG. 13 is a schematic cross-sectional view of a main part of the mold showing an embodiment of an attachment structure of the mold surface material and the mold inner surface member of the present invention.
【図１４】 本考案の金型表面材と金型内表面部材との
取り付け構造の他の実施例を示す金型要部の模式的断面
図である。FIG. 14 is a schematic cross-sectional view of a main part of a mold showing another embodiment of the mounting structure of the mold surface material and the mold inner surface member of the present invention.
【図１５】 本考案の金型表面材と金型内表面部材との
取り付け構造の他の実施例を示す金型要部の模式的断面
図である。FIG. 15 is a schematic cross-sectional view of a main part of a mold showing another embodiment of the mounting structure of the mold surface material and the mold inner surface member of the present invention.
【図１６】 本考案の金型表面材と金型内表面部材との
取り付け構造の他の実施例を示す金型要部の模式的断面
図である。FIG. 16 is a schematic cross-sectional view of a main part of a mold showing another embodiment of the mounting structure of the mold surface material and the mold inner surface member of the present invention.
１：金型表面材、２：表面層、２ａ，２ｂ：金網、２
ｃ：パンチングメタル、２ｄ：加熱媒体通過孔、３：座
板、４：凸状係合部品（スナップ式）、５：金属枠、
６：雄ねじ、７：凸状係合部品（割ピン式）、８：凸状
係合部品（ジャック式）、９：Ｏリング、１０：凹状係
合部品（スナップ式）、１０ａ：雌ねじ部、１０ｂ：凹
部、１１：番線、１２：ボルト、１３：コア金型、１３
ａ：金型内表面部材、１３ｂ：金型内表面部材表面、１
３ｃ：凹部、１３ｄ：穴又は雌ねじ部、１３ｅ：貫通
孔、１３ｆ：段部、１３ｇ：座ぐり部、１４：キャビテ
イ金型、１４ａ：内壁、１５：成形用金型、１６：ビ
ス、１７：蒸気孔、１８：成形空間、１９：凹状係合部
品、１９ａ：段部、２０：座板、２１：ピン、２２：ピ
ン受け部、２２ａ：座ぐり部、２２ｂ：細穴。1: mold surface material, 2: surface layer, 2a, 2b: wire mesh, 2
c: punching metal, 2d: heating medium passage hole, 3: seat plate, 4: convex engagement part (snap type), 5: metal frame,
6: male screw, 7: convex engagement part (split pin type), 8: convex engagement part (jack type), 9: O-ring, 10: concave engagement part (snap type), 10a: female screw part, 10b: concave portion, 11: line, 12: bolt, 13: core mold, 13
a: mold inner surface member, 13b: mold inner surface member surface, 1
3c: recess, 13d: hole or female thread, 13e: through hole, 13f: step, 13g: counterbore, 14: cavity mold, 14a: inner wall, 15: molding mold, 16: screw, 17: Steam hole, 18: molding space, 19: concave engaging part, 19a: stepped portion, 20: seat plate, 21: pin, 22: pin receiving portion, 22a: counterbore portion, 22b: small hole.
Claims (16)
個の凸状係合部品又は凹状係合部品を取り付けて嵌合凸
部を設けた金型表面材と、金型内表面に前記金型表面材
の嵌合凸部と凹凸嵌合する凹部又は貫通孔からなる嵌合
凹部を設けた金型とよりなり、前記金型表面材裏面の嵌
合凸部を金型内表面の嵌合凹部に嵌合して金型内表面に
金型表面材を固定してなる型内発泡成形用金型。1. A mold surface material having a plurality of convex engaging parts or concave engaging parts attached to a back surface of a surface layer made of a porous metal plate to provide a fitting convex part; A mold provided with a fitting concave portion formed of a concave portion or a through-hole with a fitting convex portion of the mold surface material and a concave / convex fit, wherein the fitting convex portion on the back surface of the mold surface material is fitted on the inner surface of the mold. An in-mold foam molding mold in which a mold surface material is fixed to a mold inner surface by fitting into a mating recess.
合凹部内に、金型表面材裏面の凸状係合部品または凹状
係合部品と互いに係合する凹条係合部品又は凸状係合部
品を取り付けてなる請求項１記載の成形用金型。2. A concave engaging part or a convex engaging with a convex engaging part or a concave engaging part on a rear surface of a mold surface material in a fitting concave part formed by a concave part or a through hole on an inner surface of a die. 2. The molding die according to claim 1, wherein the shape-engaging part is attached.
合凹部内に、金型表面材裏面の凸状係合部品と互いに係
合する係合段部を設けてなる請求項１記載の成形用金
型。3. The mold according to claim 1, further comprising an engaging step for engaging with the convex engaging part on the back surface of the mold surface material, in a fitting recess formed by a recess or a through hole on the inner surface of the mold. Mold for molding.
るとともに、金型内表面にピン受け部を設けてなる請求
項１〜３のいずれかに記載の成形用金型。4. The molding die according to claim 1, wherein a positioning pin is provided on the back surface of the die surface material, and a pin receiving portion is provided on the inner surface of the die.
状係合部品又は凹状係合部品を取り付けて嵌合凸部を設
けてなる金型表面材。5. A mold surface material comprising a convex engaging part or a concave engaging part attached to a back surface of a surface layer made of a porous metal plate to provide a fitting convex part.
個の座板を焼結により固定し、これら座板に凸状係合部
品又は凹状係合部品を取り付けて嵌合凸部を設けてなる
請求項５記載の金型表面材。6. A plurality of seat plates are fixed to the back surface of a surface layer made of a porous metal plate by sintering, and a convex engaging component or a concave engaging component is attached to these seat plates to provide a fitting convex portion. The mold surface material according to claim 5, wherein
は溶接により座板に取り付けてなる請求項６記載の金型
表面材。7. The die surface material according to claim 6, wherein the convex engaging part or the concave engaging part is attached to the seat plate by sintering or welding.
螺設してなる請求項６記載の金型表面材。8. The mold surface material according to claim 6, wherein the convex engaging part or the concave engaging part is screwed to the seat plate.
は溶接により表面層の裏面に直接取り付けてなる請求項
５記載の金型表面材。9. The die surface material according to claim 5, wherein the convex engagement component or the concave engagement component is directly attached to the back surface of the surface layer by sintering or welding.
枠を焼結により固着してなる請求項５〜９のいずれかに
記載の金型表面材。10. The die surface material according to claim 5, wherein a metal frame is fixed to the peripheral portion of the front surface or the rear surface of the surface layer by sintering.
着した金属枠に凸状係合部品又は凹状係合部品を取り付
けてなる請求項１０記載の金型表面材。11. The mold surface material according to claim 10, wherein a convex engaging component or a concave engaging component is attached to a metal frame fixed to the peripheral edge of the back surface of the surface layer by sintering.
なる請求項６〜１１のいずれかに記載の金型表面材。12. The mold surface material according to claim 6, wherein a positioning pin is provided on the back surface of the surface layer.
板に位置決めピンを設けてなる請求項１２記載の金型表
面材。13. The die surface material according to claim 12, wherein positioning pins are provided on a seat plate fixed to the back surface of the surface layer by sintering.
からなる請求項５〜１３のいずれかに記載の金型表面
材。14. The mold surface material according to claim 5, wherein the surface layer comprises a sintered body of a plurality of porous metal plates.
タルからなる請求項５〜１４のいずれかに記載の金型表
面材。15. The mold surface material according to claim 5, wherein the surface layer is made of a metal mesh and / or a punched metal.
してなる請求項５〜１５のいずれかに記載の金型表面
材。16. The mold surface material according to claim 5, wherein the surface layer is coated with a fluororesin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997005727U JP3045016U (en) | 1997-07-02 | 1997-07-02 | Mold for in-mold foam molding and mold surface material used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997005727U JP3045016U (en) | 1997-07-02 | 1997-07-02 | Mold for in-mold foam molding and mold surface material used therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3045016U true JP3045016U (en) | 1998-01-23 |
Family
ID=43179421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1997005727U Expired - Lifetime JP3045016U (en) | 1997-07-02 | 1997-07-02 | Mold for in-mold foam molding and mold surface material used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3045016U (en) |
-
1997
- 1997-07-02 JP JP1997005727U patent/JP3045016U/en not_active Expired - Lifetime
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