JPH0388713U

JPH0388713U -

Info

Publication number: JPH0388713U
Application number: JP15069989U
Authority: JP
Priority date: 1989-12-27
Filing date: 1989-12-27
Publication date: 1991-09-10

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の射出成形金型で成
形を行つている状態を示す要部断面図、第２図は
該金型で製造された成形品を示す正面図、第３図
は凹凸形状部に採用できる段差模様の例を示す図
、第４図は従来の射出成形金型の要部断面図、第
５図は従来の金型での成形過程における樹脂材料
の挙動を段階的に示す図、第６図及び第７図は夫
々従来の金型で製造された通常成形品及び未熟成
形品を示す正面図、第８図及び第９図は夫々それ
ら成形品の一部分を示す切欠斜視図である。図中、４……押出ピン、５……射出成形金型、
６……引張収縮力、７……段差、８……屈折力、
９……転写不良部、１５……凹凸形状部、１８…
…成形品。 Fig. 1 is a sectional view of essential parts showing a state in which molding is performed using an injection mold according to an embodiment of the present invention, Fig. 2 is a front view showing a molded product manufactured with the mold, and Fig. 3 Figure 4 shows an example of a step pattern that can be adopted in an uneven part, Figure 4 is a sectional view of the main part of a conventional injection mold, and Figure 5 shows the behavior of the resin material in stages during the molding process with a conventional mold. Figures 6 and 7 are front views showing a normal molded product and an immature molded product manufactured using a conventional mold, respectively, and Figures 8 and 9 show a portion of these molded products, respectively. FIG. 3 is a cutaway perspective view. In the figure, 4... extrusion pin, 5... injection mold,
6... Tensile contraction force, 7... Step, 8... Refractive power,
9... Transfer defective part, 15... Uneven shape part, 18...
…Molding.

Claims

[Scope of utility model registration request]

A feature of the injection mold is that the cavity surface of the injection mold, in which the cavity surface is composed of the mold and the mold parts, is provided with a concave-convex shaped part with a step approximately equal to the step between the mold and the mold part, on the cavity surface near the mold part. injection mold.