JPH0164411U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図は本考案の一実施例を第一次射
出時、第二次射出時の夫々の状況で示す概要図、
第３図、第４図は本考案の他実施例を第一次射出
時、第二射出時の夫々の状況で示す概要図、第５
図はシヤツトオフゲートの要部拡大図、第６図、
第７図は従来例を第一次射出時、第二次射出時の
夫々の状況で示す概要図である。 １…キヤビテイ型、４…コア型、６，７…第１
キヤビテイ形成面、８…第１キヤビテイ、９…移
動コア、１１…第２キヤビテイ形成面、１２…第
２キヤビテイ、１３…第一次射出用ゲート、１６
…第二次射出用ゲート、２０…シヤツトオフ弁。 FIG. 1 and FIG. 2 are schematic diagrams showing an embodiment of the present invention at the time of primary injection and at the time of secondary injection, respectively;
Figures 3 and 4 are schematic diagrams showing other embodiments of the present invention during the first injection and the second injection, respectively;
The figure is an enlarged view of the main parts of the shutter-off gate, Figure 6,
FIG. 7 is a schematic diagram showing the conventional example at the time of primary injection and at the time of secondary injection, respectively. 1...Cavity type, 4...Core type, 6, 7...First
Cavity forming surface, 8... First cavity, 9... Moving core, 11... Second cavity forming surface, 12... Second cavity, 13... Primary injection gate, 16
...Second injection gate, 20...Shutoff valve.

Claims (1)

【実用新案登録請求の範囲】 (1) キヤビテイ型とコア型を対向配置し、その
型締め状態でキヤビテイ型とコア型間に第１キヤ
ビテイを形成すると共に、該第１キヤビテイに対
して進退可能な移動コアを前記コア型に設け、該
移動コアの先端面に第２キヤビテイ形成面を凹設
し、前記移動コアをキヤビテイ型の第１キヤビテ
イ形成面に前進密着せしめた状態で移動コアとキ
ヤ型間に第２キヤビテイを形成し、該第２キヤビ
テイに第一次射出を行つた後移動コアを後退させ
て前記第１キヤビテイに第二次射出を行うように
したことを特徴とする射出成形用金型装置。 (2) 前記キヤビテイ型の第１キヤビテイ形成面
に第一次射出用ゲートと第二次射出用ゲートを設
け、これらのゲートの一方又は両方に進退可能な
シヤツトオフ弁を設けたことを特徴とする実用新
案登録請求の範囲第１項記載の射出成形用金型装
置。 (3) ゲートにシヤツトオフ弁を設けたものにお
いて、前記ゲートに至るスプルー・ランナ内の樹
脂を常時溶融状態に保つホツトランナを設けたこ
とを特徴とする実用新案登録請求の範囲第２項記
載の射出成形用金型装置。[Claims for Utility Model Registration] (1) A cavity mold and a core mold are arranged facing each other, and in the clamped state, a first cavity is formed between the cavity mold and the core mold, and it is possible to move forward and backward with respect to the first cavity. A moving core is provided in the core mold, a second cavity forming surface is recessed in the distal end surface of the moving core, and the moving core and the cavity are moved in a state where the moving core is brought into close contact with the first cavity forming surface of the cavity mold. Injection molding characterized in that a second cavity is formed between the molds, and after performing the first injection into the second cavity, the movable core is retreated to perform the second injection into the first cavity. mold equipment. (2) A primary injection gate and a secondary injection gate are provided on the first cavity forming surface of the cavity mold, and a shut-off valve that can move forward and backward is provided in one or both of these gates. An injection mold device according to claim 1 of the utility model registration claim. (3) The injection system according to claim 2 of the utility model registration claim, characterized in that the gate is provided with a shut-off valve, and a hot runner is provided to keep the resin in the sprue runner leading to the gate in a molten state at all times. Molding mold equipment.