JPS6316112U

JPS6316112U -

Info

Publication number: JPS6316112U
Application number: JP11020986U
Authority: JP
Priority date: 1986-07-18
Filing date: 1986-07-18
Publication date: 1988-02-02

Description

[Brief explanation of the drawing]

第１図は本考案なるビデオデイスク収納ケース
成型用金型の第１の実施例を示す図で、下ハーフ
を成型する金型の平面図、第２図はその金型によ
つて成型される下ハーフの底面の一部を示す斜視
図、第３図Ａは第２の実施例を示す図で、下ハー
フを成型する金型の平面図、第３図Ｂは第３図Ａ
に示す金型の正面図、第４図は流動距離と樹脂圧
力との関係を示すグラフ、第５図は一般的なビデ
オデイスク収納ケースの斜視図、第６図は第５図
に示すビデオデイスク収納ケースの一部を構成す
る下ハーフの平面図、第７図は第６図に示す下ハ
ーフを成型する従来の成型用金型を示す平面図で
ある。１…ビデオデイスク収納ケース、５…上ハーフ
、６…下ハーフ、６ａ…背面部、６ｂ…正面部、
６ｃ，６ｄ…側面部、６ｂ′，６ｃ′，６ｄ′…
リブ、６ｅ…底面部、１０，１１…金型、Ｇ_１，
Ｇ_２…第１、第２のゲート（樹脂注入口）、Ｇ_３，Ｇ_４…第３、第４のゲート（樹脂注入口）、Ｈ
_１，Ｈ_２，Ｈ_３，Ｈ_４…凸型状の突出部、―
…縦方向の中心線、―…横方向の中心線。 Fig. 1 is a diagram showing a first embodiment of the mold for molding a video disc storage case according to the present invention, and Fig. 2 is a plan view of the mold for molding the lower half, and Fig. 2 is a diagram showing the mold formed by the mold. FIG. 3A is a perspective view showing a part of the bottom surface of the lower half, and FIG. 3A is a plan view of the mold for molding the lower half.
Figure 4 is a graph showing the relationship between flow distance and resin pressure, Figure 5 is a perspective view of a typical video disc storage case, and Figure 6 is the video disc shown in Figure 5. FIG. 7 is a plan view of the lower half forming a part of the storage case, and FIG. 7 is a plan view showing a conventional molding die for molding the lower half shown in FIG. 6. 1... Video disk storage case, 5... Upper half, 6... Lower half, 6a... Back part, 6b... Front part,
6c, 6d...side part, 6b', 6c', 6d'...
Rib, 6e...bottom part, 10, 11...mold, _G1 ,
_G2 ...first and second gates (resin injection port), _G3 , G ₄ ...Third and fourth gates (resin injection port), H
₁ , H ₂ , H ₃ , H ₄ ...Convex-shaped protrusion, -
...Vertical center line, -...Horizontal center line.

Claims

[Scope of Claim for Utility Model Registration] (1) For molding a flat video disc storage case that is composed of an upper half and a lower half with lids fitted together, and into which the video disc stored inside the case can be taken in and out from the open rear part. The mold includes a plurality of resin injection ports at positions on the mold surface corresponding to a plurality of locations that are approximately symmetrical with respect to the vertical and/or horizontal center lines of the upper half and the lower half and that are not close to each other. A mold for molding a video disk storage case. (2) The plurality of resin injection ports are connected to each bisector in the vertical direction that approximately bisects the center line in the vertical direction of the upper half and the lower half and the distance between each side portion, and in the horizontal direction. A claim for utility model registration characterized in that the utility model is provided at a position on the mold surface corresponding to the intersection of the center line and each bisector line in the horizontal direction that approximately bisects the front part and the back part. A mold for molding a video disc storage case as described in item 1. (3) The plurality of resin injection ports are located on each of the horizontal bisectors that approximately bisect the horizontal center line of the upper half and the lower half, and the front and rear parts, and A mold for molding a video disc storage case according to claim 1, wherein the mold is provided at a position on the mold surface corresponding to the outer surface of both side surfaces. (4) The mold for molding a video disk storage case according to claims 1 to 3 of the utility model registration claim, wherein the resin injection port is formed in a convex shape on the mold surface. .