JPH09262875A - Molding of plastic molded product - Google Patents
Molding of plastic molded productInfo
- Publication number
- JPH09262875A JPH09262875A JP7175596A JP7175596A JPH09262875A JP H09262875 A JPH09262875 A JP H09262875A JP 7175596 A JP7175596 A JP 7175596A JP 7175596 A JP7175596 A JP 7175596A JP H09262875 A JPH09262875 A JP H09262875A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- mold
- molded product
- core
- plastic
- 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.)
- Pending
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は間口に比べて奥行き
が深く、かつ高意匠性が要求されるカラーＴＶ前枠のよ
うなプラスチック筐体において、無塗装で使用できる筐
体を成形するための成形方法及び金型構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for molding a plastic casing such as a color TV front frame, which is deeper than a frontage and requires high designability, to be used without painting. The present invention relates to a molding method and a mold structure.
【０００２】[0002]
【従来の技術】従来、高意匠性が要求されるプラスチッ
ク筐体では、その意匠性に関する仕様を満足させる手段
として、成形時に発生した筐体の表面欠陥（表面が凹む
「ひけ」、樹脂の合流部に発生する「ウエルドライン」
など）を隠蔽するため、多くの場合、塗装が用いられて
いる。しかし、二次加工である塗装はコスト高となるだ
けでなく、成形品をリサイクルする際の異物となるた
め、塗装しないで表面欠陥を隠蔽する技術開発も行われ
てきた。例えば、特開平７−１９５４５３号公報には
「プラスチック成形型およびその成形品」と題して、成
形型の抜き勾配の箇所に鋸歯状の微細な凹凸模様を付け
た金型が述べられている。これは、しぼ模様を付けるこ
とによって、デザイン的にも優れた筐体を得ようとした
ものである。2. Description of the Related Art Conventionally, in a plastic housing which is required to have a high design property, surface defects (a sink mark, a recessed surface, a resin confluence) of the housing are formed as a means for satisfying the specification concerning the design property. "Weld line" generated in the part
Etc.) is often used to hide the paint. However, the coating which is the secondary processing not only increases the cost but also becomes a foreign substance when the molded product is recycled, and therefore, technical development has been carried out to conceal surface defects without coating. For example, Japanese Unexamined Patent Publication No. 7-195453 discloses, as a plastic mold and a molded product thereof, a mold having a serrated fine uneven pattern at a draft angle of the mold. This is an attempt to obtain a housing excellent in design by giving a grain pattern.
【０００３】[0003]
【発明が解決しようとする課題】上記従来技術における
成形品の抜き勾配は３°と大きく、対象としている間口
に比べて奥行きが深く、かつ高意匠性が要求されるカラ
ーＴＶ前枠のようなプラスチック筐体には適用できな
い。すなわち、最近の大形のカラーＴＶ前枠では奥行き
が１００〜１５０mmあるため、デザイン上抜き勾配は約
１°に抑えられている。そのため、従来技術で示された
ような方法では、しぼ模様の深さはほとんど形成できな
いか、あるいは形成できたとしても金型から成形品を取
出す際に、成形品に「かじり」が生じるという問題が発
生する。In the prior art, the draft of the molded article is as large as 3 °, and the depth is deeper than the target frontage, and it is required to have a high design property such as a color TV front frame. Not applicable to plastic enclosures. That is, since the depth of the front frame of a large-sized color TV of recent years is 100 to 150 mm, the draft angle is suppressed to about 1 ° in design. Therefore, with the method as shown in the prior art, the depth of the grain pattern can hardly be formed, or even if it can be formed, when the molded product is taken out from the mold, "galling" occurs in the molded product. Occurs.
【０００４】本発明の目的は、カラーＴＶのような製品
で、高意匠性が要求されるプラスチック筐体を無塗装で
使用できるよう、成形品の表面欠陥となる「ひけ」や
「ウエルド」を目立たなくする成形用金型及び成形方法
を提供することにある。An object of the present invention is to prevent "sinks" and "welds", which are surface defects of molded products, in products such as color TVs so that plastic housings requiring high designability can be used without painting. It is an object of the present invention to provide a molding die and a molding method that make it inconspicuous.
【０００５】[0005]
【課題を解決するための手段】目的を達成するため、ま
ず成形品に生じる「かじり」の原因は、金型内に射出さ
れた溶融樹脂が冷却・固化する際に、コア型に拘束され
るため成形品の外形寸法が収縮できないので、コア型と
一体になった成形品の表面がキャビティ型と「擦れ合
う」現象であると考えた。すなわち、深さが１〜５０μ
mＲmax程度の鋸歯状のしぼ模様をキャビティ型に形成す
ると、その形状を転写した成形品との間で噛み合うこと
になり、それを引き離す時に成形品の山型形状が破壊さ
れる現象を「かじり」とした。そこで、従来の離型プロ
セスではコア型と一体になって挙動する成形品を、キャ
ビティ型側に残すような成形用金型の構造及び離型プロ
セスを案出した。[Means for Solving the Problems] In order to achieve the object, first, the cause of "galling" occurring in a molded product is restrained by a core mold when the molten resin injected into the mold is cooled and solidified. Therefore, the external dimensions of the molded product cannot be shrunk, so it was considered that the surface of the molded product integrated with the core mold "rubbed" with the cavity mold. That is, the depth is 1-50 μ
If a cavity-shaped serrated pattern of about mRmax is formed on the cavity, it will mesh with the molded product that has the shape transferred, and when the mold is separated, the chevron shape of the molded product is destroyed. And Therefore, in the conventional mold release process, a structure and a mold release process of a mold for molding that leaves a molded product that behaves integrally with a core mold on the cavity mold side have been devised.
【０００６】具体的には、コア型側に成形品が食い付か
ないように、金型を開く前にコア型表面から加熱した空
気を吹き出して成形品との間に微小なギャップを設けた
り、コア型の表面にテフロンコーティングなどの処理を
施して、摩擦係数を減少させ滑りを良くする方法をとっ
た。また、コア型の移動動作と成形品の突出し動作とを
同期させた。すなわち、金型を開きながらコア側から成
形品を突出すことにより、コア型が成形品からスムーズ
に離れるようにした。さらに、キャビティ型に残された
成形品を「擦れ合う」ことなく離型させるため、キャビ
ティ型から冷却した空気を吹き出して成形品の冷却・収
縮を促進するとともに、成形品を冷却するための空気を
吹き出す機構や吸盤のような捕捉手段を備えたロボット
を用いて、キャビティ型に残された成形品を内側に変形
させながら取り出す方式とした。なお、コア型、キャビ
ティ型の表面から空気を吹き出す方法として、型の全面
又はその一部に通気性金属を用いた。Specifically, in order to prevent the molded product from sticking to the core mold side, heated air is blown from the surface of the core mold before opening the mold to form a minute gap between the core product and the molded product. The surface of the core type was treated with Teflon coating to reduce the coefficient of friction and improve sliding. Further, the moving operation of the core mold and the ejecting operation of the molded product are synchronized. That is, the core product is smoothly separated from the molded product by opening the mold and projecting the molded product from the core side. Furthermore, in order to release the molded product left in the cavity mold without "rubbing" it, the cooled air is blown out from the cavity mold to accelerate the cooling / shrinkage of the molded product and the air for cooling the molded product. A robot equipped with a blowing mechanism and a catching means such as a suction cup was used to take out the molded product left in the cavity mold while deforming it inside. As a method of blowing air from the surfaces of the core mold and the cavity mold, a breathable metal was used on the entire surface of the mold or a part thereof.
【０００７】[0007]
【発明の実施の形態】以下、本発明の一実施例を図を用
いて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.
【０００８】図１は本発明のカラーＴＶの斜視図であ
る。カラーＴＶのプラスチック筐体は前枠１ａ、後部カ
バー１ｂから構成されている。FIG. 1 is a perspective view of a color TV of the present invention. The plastic casing of the color TV is composed of a front frame 1a and a rear cover 1b.
【０００９】図２は従来例におけるカラーＴＶの前枠１
ａを含む、成形用金型２の型締め時の断面図を示す。こ
れは射出成形機のノズル（図示せず）から注入された溶
融樹脂が成形用金型２の中で冷却・固化し、前枠１ａを
形成したところである。ここで、成形用金型２はコア型
２ａとキャビティ型２ｂから構成されており、コア型２
ａには成形品を突出すための突出しピン３が内蔵されて
いる。FIG. 2 is a front frame 1 of a conventional color TV.
A sectional view at the time of mold clamping of the molding die 2 including a is shown. This is where the molten resin injected from the nozzle (not shown) of the injection molding machine is cooled and solidified in the molding die 2 to form the front frame 1a. Here, the molding die 2 is composed of a core die 2a and a cavity die 2b.
The protrusion pin 3 for protruding the molded product is built in a.
【００１０】図３は従来例におけるカラーＴＶの前枠１
ａに関し、図２の状態にあった成形用金型２が型開き動
作した時の断面図を示す。金型内に注入された溶融樹脂
は冷却・固化する際に寸法収縮するので、一般に前枠１
ａはコア型２ａに食い付き、一体となって動作する。こ
のため、前枠１ａの側面部１ｃにしぼ模様のような凹凸
があると、型開き動作時にキャビティ型２ｂとの間で擦
れ、側面部１ｃに白い線状の表面欠陥「かじり」が発生
する。これを防止するため、カラーＴＶの前枠１ａのよ
うに高意匠性が要求される部品の場合には、側面部１ｃ
を含め成形品の表面にはしぼ模様を付けず、また、抜き
勾配を大きく（例えば３°以上）するなどして、塗装に
より意匠性を満足させるのが一般的である。FIG. 3 is a front frame 1 of a conventional color TV.
2A is a cross-sectional view when the molding die 2 in the state of FIG. 2 performs a mold opening operation. Since the molten resin injected into the mold shrinks when cooled and solidified, the front frame 1 is generally used.
The a bites the core mold 2a and operates as a unit. Therefore, if the side surface 1c of the front frame 1a has unevenness like a grain pattern, it rubs against the cavity mold 2b during the mold opening operation, and a white line-shaped surface defect "bite" occurs on the side surface 1c. . In order to prevent this, in the case of a component requiring high designability such as the front frame 1a of a color TV, the side surface portion 1c
In general, the surface of the molded product including the above is not provided with a grain pattern, and the draft is generally increased (for example, 3 ° or more) to satisfy the design property by coating.
【００１１】図４は従来例におけるカラーＴＶの前枠１
ａに関し、図３の状態にあった成形用金型２の突出し動
作時の断面図を示す。前枠１ａは突出しピン３によりコ
ア型２ａから引き離される。FIG. 4 is a front frame 1 of a color TV in a conventional example.
With respect to a, a sectional view of the molding die 2 in the state of FIG. The front frame 1a is separated from the core mold 2a by the protruding pin 3.
【００１２】図５は本発明のカラーＴＶの前枠１ａの成
形用金型２の型締め時の断面図を示す。この場合、図２
とは異なり、コア側に前枠１ａが食い付かないように、
コア型２ａの表面から加熱した空気を吹き出させて前枠
１ａとの間に微小なギャップを設けている。ここで加熱
した空気を用いたのは、前枠１ａの冷却・固化によるコ
ア型２ａへの食い付きを防止するためである。また、前
枠１ａからコア型２ａをスムーズに引き抜くため、コア
型２ａの表面にテフロンコーティングなどの処理を施し
て、摩擦係数を減少させ滑り易くする方法を併用した。
なお、前枠１ａの抜き勾配は、デザイン上出来るかぎり
小さい方が望ましく、ここでは約１°とした。FIG. 5 shows a sectional view of the front frame 1a of the color TV of the present invention when the molding die 2 is clamped. In this case, FIG.
Unlike, the front frame 1a does not bite on the core side,
A minute gap is provided between the core mold 2a and the front frame 1a by blowing heated air from the surface of the core mold 2a. The heated air is used here to prevent the front frame 1a from being bitten by the core mold 2a due to cooling and solidification. Further, in order to smoothly pull out the core mold 2a from the front frame 1a, the surface of the core mold 2a was subjected to a treatment such as Teflon coating to reduce the friction coefficient and make it slippery.
The draft of the front frame 1a is preferably as small as possible in terms of design, and is about 1 ° here.
【００１３】図６は本発明のカラーＴＶの前枠１ａに関
し、図５の状態にあった成形用金型２が型開き動作した
時の断面図を示す。これはコア型２ａが前枠１ａをキャ
ビティ型２ｂに残したまま引き抜かれたところである。
ここで、前枠１ａをキャビティ型２ｂから容易に引き離
すため、キャビティ型２ｂから冷却した空気を吹き出し
て前枠１ａとの間に微小なギャップを設けている。冷却
した空気を用いたのは、前枠１ａの冷却・収縮を促進す
るためである。FIG. 6 shows a sectional view of the front frame 1a of the color TV of the present invention when the molding die 2 in the state of FIG. 5 is opened. This is where the core mold 2a is pulled out while leaving the front frame 1a in the cavity mold 2b.
Here, in order to easily separate the front frame 1a from the cavity mold 2b, a small gap is provided between the front frame 1a and the front frame 1a by blowing the cooled air from the cavity mold 2b. The cooled air is used to promote cooling and contraction of the front frame 1a.
【００１４】なお、コア型２ａ、キャビティ型２ｂの表
面から空気を吹き出す方法として、型の全面又はその一
部に径が１〜１０μｍ程度の空孔を持つ通気性金属４を
用いた。As a method of blowing air from the surfaces of the core mold 2a and the cavity mold 2b, a breathable metal 4 having pores with a diameter of about 1 to 10 μm was used on the entire surface of the mold or a part thereof.
【００１５】図７は本発明のカラーＴＶの前枠１ａを成
形用金型２から取り出す動作を示した断面図を示す。こ
こで、前枠１ａはロボットアーム５でキャビティ型２ｂ
から取り出されるが、その際に前枠１ａがキャビティ型
２ｂと擦れ合わないように、前枠１ａを強制的に内側に
変形させながら引き剥すため、前枠１ａを冷却するため
の空気を吹き出す機構（図示せず）や、真空吸引機構付
き吸盤５ａのような捕捉手段を備えたロボットアーム５
を用いた。FIG. 7 is a sectional view showing the operation of taking out the front frame 1a of the color TV of the present invention from the molding die 2. Here, the front frame 1a is a robot arm 5 and a cavity mold 2b.
However, in order to prevent the front frame 1a from rubbing against the cavity mold 2b at that time, the front frame 1a is forcibly deformed inward and peeled off, so that a mechanism for blowing air for cooling the front frame 1a is blown out. (Not shown) or a robot arm 5 having a capturing means such as a suction cup 5a with a vacuum suction mechanism
Was used.
【００１６】図８は本発明のカラーＴＶの前枠１ａに関
し、図５の状態にあった成形用金型２が型開き動作を開
始した直後の断面図を示す。ここで、前枠１ａをキャビ
ティ型２ｂに残したままコア型２ａを引き抜くため、コ
ア型２ａの移動動作と前枠１ａの突出し動作とを同期さ
せた。すなわち、コア型２ａを開きながら突出しピン３
により前枠１ａを突出す際に、前枠１ａがコア型２ａか
ら完全に離れるまでは、型開き量δ1と突出し量δ2が常
に一致するよう制御した。なお、図５で示したように前
枠１ａからコア型２ａをスムーズに引き抜くため、コア
型２ａの表面にテフロンコーティングなどの処理を施
し、摩擦係数を減少させ滑り易くする方法を併用しても
良い。FIG. 8 shows a sectional view of the front frame 1a of the color TV of the present invention immediately after the molding die 2 in the state of FIG. 5 starts the mold opening operation. Here, in order to pull out the core mold 2a while leaving the front frame 1a in the cavity mold 2b, the moving operation of the core mold 2a and the projecting operation of the front frame 1a are synchronized. That is, the core pin 2a is opened and the protruding pin 3
Thus, when projecting the front frame 1a, the mold opening amount δ 1 and the projecting amount δ 2 are controlled to always match until the front frame 1a is completely separated from the core mold 2a. As shown in FIG. 5, in order to smoothly pull out the core mold 2a from the front frame 1a, the surface of the core mold 2a may be subjected to a treatment such as Teflon coating to reduce the friction coefficient and make it slippery. good.
【００１７】以上では高意匠性が要求される製品の例と
してカラーＴＶのみについて述べたが、本発明はもちろ
んこれに限定されるものではない。Although only the color TV has been described above as an example of a product requiring high designability, the present invention is not limited to this.
【００１８】[0018]
【発明の効果】本発明は、カラーＴＶのような高意匠性
が要求される製品のプラスチック筐体で、意匠用の塗装
を施さずに使用するため、筐体の表面にデザイン的に優
れた微細なしぼ模様を付けて、表面欠陥となる「ひけ」
や「ウエルド」を目立たなくしたものである。これによ
り、プラスチック筐体を無塗装にできるため、筐体の加
工工数（コスト）が低減でき、また環境問題に対して
も、回収した筐体の粉砕時に強度低下の要因となる塗料
の粒子が含まれなくなるため、材料リサイクルも容易に
なる。INDUSTRIAL APPLICABILITY The present invention is a plastic housing for products requiring high designability such as a color TV, and is used without being painted for design, so that the surface of the housing is excellent in design. "Hake" that is a surface defect with a fine grain pattern
Or "weld" is inconspicuous. As a result, the plastic casing can be unpainted, which reduces the number of man-hours (cost) for processing the casing, and also reduces environmental impacts by reducing the paint particles that cause a decrease in strength when the collected casing is crushed. Since it will not be included, material recycling will be easier.
【図１】本発明の一実施例を示すカラーＴＶの斜視図。FIG. 1 is a perspective view of a color TV showing an embodiment of the present invention.
【図２】従来例におけるカラーＴＶ前枠成形用金型の型
締め時の断面図。FIG. 2 is a cross-sectional view of a color TV front frame molding die in a conventional example when the die is clamped.
【図３】従来例におけるカラーＴＶ前枠成形用金型の型
開き時の断面図。FIG. 3 is a cross-sectional view of a conventional color TV front frame molding die when the die is opened.
【図４】従来例におけるカラーＴＶ前枠成形用コア型の
突出し動作時の断面図。FIG. 4 is a cross-sectional view of a core mold for molding a color TV front frame in a conventional example during a projecting operation.
【図５】本発明の一実施例を示すカラーＴＶ前枠成形用
金型の型締め時の断面図。FIG. 5 is a cross-sectional view of a color TV front frame molding die when the die is clamped, showing an embodiment of the present invention.
【図６】本発明の一実施例を示すカラーＴＶ前枠成形用
金型の型開き時の断面図。FIG. 6 is a cross-sectional view of the color TV front frame molding die when the die is opened, showing an embodiment of the present invention.
【図７】本発明の一実施例を示すカラーＴＶ前枠取出し
時の断面図。FIG. 7 is a cross-sectional view of the color TV front frame when an embodiment of the present invention is taken out.
【図８】本発明の一実施例を示すカラーＴＶ前枠成形用
金型の突出し動作時の断面図。FIG. 8 is a cross-sectional view of a color TV front frame molding die during an ejecting operation according to an embodiment of the present invention.
１…カラーＴＶ、 １ａ…前枠、 １ｂ…後部カバー、 ２…成形用金型、 ２ａ…コア型、 ２ｂ…キャビティ型、 ３…突出しピン、 ４…通気性金属。 1 ... Color TV, 1a ... Front frame, 1b ... Rear cover, 2 ... Mold, 2a ... Core mold, 2b ... Cavity mold, 3 ... Projection pin, 4 ... Breathable metal.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｃ 33/76 Ｂ２９Ｃ 33/76 45/26 45/26 45/37 45/37 // Ｂ２９Ｃ 45/42 Ｂ２９Ｃ 45/42 Ｂ２９Ｌ 22:00 (72)発明者 河野 務 神奈川県横浜市戸塚区吉田町292番地株式 会社日立製作所生産技術研究所内 (72)発明者 山田 政行 神奈川県横浜市戸塚区吉田町292番地株式 会社日立製作所生産技術研究所内 (72)発明者 平野 学 神奈川県横浜市戸塚区吉田町292番地株式 会社日立製作所映像情報メディア事業部内 (72)発明者 岩谷 重春 神奈川県横浜市戸塚区吉田町292番地株式 会社日立製作所映像情報メディア事業部内Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI Technical display location B29C 33/76 B29C 33/76 45/26 45/26 45/37 45/37 // B29C 45/42 B29C 45 / 42 B29L 22:00 (72) Inventor Tsutomu Kono 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Stock production company, Hitachi, Ltd. (72) Masayuki Yamada 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa (72) Inventor Manabu Hirano, 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Stock Company, Hitachi, Ltd.Image Information Media Division (72) Inventor Shigeharu Iwatani, 292, Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Company Hitachi, Ltd. Visual Information Media Division
Claims (8)
が要求されるプラスチック成形品の成形方法において、
側面部の抜き勾配を小さくし、成形用金型のキャビティ
型全面又はその一部に微細な凹凸模様を設け、前記成形
用金型から成形品を取り出すプロセスは、まずコア型を
先に抜き、その後でキャビティ型に残された成形品を取
出すことを特徴とするプラスチック成形品の成形方法。1. A method for molding a plastic molded product, which is deeper than a frontage and requires high designability,
To reduce the draft of the side surface, to provide a fine concave-convex pattern on the entire surface or part of the cavity mold of the molding die, the process of taking out the molded product from the molding die is to first remove the core mold, After that, the molded product left in the cavity mold is taken out, and a method for molding a plastic molded product.
望ましくは１°以下にするとともに、分割することなく
一体で形成した請求項１に記載のプラスチック成形品の
成形方法。2. The draft of the cavity mold is 3 ° or less,
The method for molding a plastic molded article according to claim 1, wherein the plastic molded article is formed integrally without dividing, preferably at 1 ° or less.
形用金型を用いて成形した請求項１に記載のプラスチッ
ク成形品の成形方法。3. The method for molding a plastic molded product according to claim 1, wherein the molding is performed using a molding die having a core mold for blowing heated air.
えた成形用金型を用いて成形した請求項１に記載のプラ
スチック成形品の成形方法。4. The method for molding a plastic molded article according to claim 1, wherein the molding is performed using a molding die having a cavity mold for blowing cooled air.
に、コア型あるいはキャビティ型の全面又はその一部に
通気性金属を備えた成形用金型を用いて成形した請求項
１に記載のプラスチック成形品の成形方法。5. The plastic molding according to claim 1, wherein a molding die having a breathable metal on the whole surface or a part of the core mold or the cavity mold is used to blow out heated or cooled air. Molding method.
施して、摩擦係数を減少させ摺動性を向上させたコア型
を用いて成形した請求項１に記載のプラスチック成形品
の成形方法。6. The method for molding a plastic molded article according to claim 1, wherein the surface is subjected to a treatment such as Teflon coating and molded using a core mold having a reduced friction coefficient and improved slidability.
を突出す動作とコア型の移動を同期させた請求項１に記
載のプラスチック成形品の成形方法。7. The method for molding a plastic molded product according to claim 1, wherein the operation of projecting the molded product from the core side and the movement of the core mold are synchronized in order to remove the core mold first.
方法として、吸盤のような捕捉手段や成形品を冷却する
ための空気を吹き出す機構を備えたロボットを用いた請
求項１に記載のプラスチック成形品の成形方法。8. The plastic according to claim 1, wherein as a method for taking out the molded product left in the cavity mold, a robot equipped with a catching means such as a suction cup and a mechanism for blowing air for cooling the molded product is used. Molding method for molded products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7175596A JPH09262875A (en) | 1996-03-27 | 1996-03-27 | Molding of plastic molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7175596A JPH09262875A (en) | 1996-03-27 | 1996-03-27 | Molding of plastic molded product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09262875A true JPH09262875A (en) | 1997-10-07 |
Family
ID=13469679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7175596A Pending JPH09262875A (en) | 1996-03-27 | 1996-03-27 | Molding of plastic molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09262875A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004114628A (en) * | 2002-09-27 | 2004-04-15 | Ricoh Co Ltd | Molding method and injection molding die for plastic molded item |
| US9724860B2 (en) | 2015-07-02 | 2017-08-08 | Hyundai Motor Company | Thin type injection molding skin manufacturing apparatus and skin taking out method of the same |
| CN112936789A (en) * | 2021-02-01 | 2021-06-11 | 瑞康诺(深圳)创新发展有限公司 | Mold utilizing principle of expansion with heat and contraction with cold and injection molding process |
-
1996
- 1996-03-27 JP JP7175596A patent/JPH09262875A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004114628A (en) * | 2002-09-27 | 2004-04-15 | Ricoh Co Ltd | Molding method and injection molding die for plastic molded item |
| US9724860B2 (en) | 2015-07-02 | 2017-08-08 | Hyundai Motor Company | Thin type injection molding skin manufacturing apparatus and skin taking out method of the same |
| CN112936789A (en) * | 2021-02-01 | 2021-06-11 | 瑞康诺(深圳)创新发展有限公司 | Mold utilizing principle of expansion with heat and contraction with cold and injection molding process |
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