JPS6457024U

JPS6457024U -

Info

Publication number: JPS6457024U
Application number: JP15271987U
Authority: JP
Priority date: 1987-10-07
Filing date: 1987-10-07
Publication date: 1989-04-10

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例によるランナーロツ
クピンを示した正面図、第２図は同ランナーロツ
クピンを用いたピンゲート型金型装置の要部断面
図、第３図は本考案のランナーロツクピンを備え
たピンゲート型金型装置を型閉じ時の状態で示し
た装置全体の中央縦断面図、第４図は同金型装置
を型開き時の状態で示した縦断面図、第５図は従
来のランナーロツクピンを示した正面図、第６図
は従来のランナーロツクピンを用いたピンゲート
型金型装置の要部断面図、第７図Ａ及び第８図Ａ
は従来の問題点を説明するための概略説明図、第
７図Ｂ及び第８図Ｂは本考案の効果を説明するた
めの概略説明図である。Ｐ′……従来のランナーロツクピン、Ｐ……本
考案のランナーロツクピン、ｐ１……ヘツド部、
ｐ２……ピン本体部、ｐ５……凹形のアンダーカ
ツト部、ｌ……凹形ランナーロツクピンのピン長
さ、１……射出成形機の固定盤、２……同可動盤
、３……固定側取付板、３ａ……同固定側型板の
ピン孔、４……スクリユープラグ、６……ランナ
ーストリツパー板、６ａ……同ストリツパー板の
ピン孔。 Fig. 1 is a front view showing a runner lock pin according to an embodiment of the present invention, Fig. 2 is a sectional view of a main part of a pin gate type mold device using the runner lock pin, and Fig. 3 is a runner of the present invention. FIG. 4 is a vertical cross-sectional view of the pin gate type mold device equipped with a locking pin, showing the entire device when the mold is closed; FIG. The figure is a front view showing a conventional runner lock pin, FIG. 6 is a sectional view of a main part of a pin gate type mold device using a conventional runner lock pin, and FIGS. 7A and 8A.
FIG. 7B and FIG. 8B are schematic explanatory diagrams for explaining the conventional problems, and FIGS. 7B and 8B are schematic explanatory diagrams for explaining the effects of the present invention. P'... conventional runner lock pin, P... runner lock pin of the present invention, p1... head part,
p2...Pin body part, p5...Concave undercut part, l...Pin length of concave runner lock pin, 1...Fixed plate of the injection molding machine, 2...Movable plate of the same, 3... Fixed side mounting plate, 3a... Pin hole of the same fixed side mold plate, 4... Screw plug, 6... Runner stripper plate, 6a... Pin hole of the same stripper plate.

Claims

[Scope of utility model registration request]

The head part p1 is pressed and fixed with a screw plug 4 etc. to the fixed side mounting plate 3 attached to the fixed platen 1 of the injection molding machine, and the runner stripper is attached through the pin hole 3a of the fixed side mounting plate 3. A runner lock of a pin gate type mold device is composed of a pin body part p2 integrated with the head part p1 inserted into a pin hole 6a of a plate 6, and an undercut part provided at the tip of this pin body part p2. In the pin, the undercut part is a concave undercut part p5 recessed from the tip surface of the pin main body part p2, and the pin length l of this concave runner lock pin is such that the pin tip part is connected to the runner stripper plate 6. A runner lock pin for a pin gate type mold device, characterized in that it has a length that allows the pin to be fixed without protruding from the end of the pin hole 6a to the runner runner 7 side.