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自封口袋成型时产生的孔的设计原理

发布日期:2022-05-14 作者:www.jnsuliao.com 点击:

自封口袋成型时产生的孔的设计原理是怎样的呢?下面来进行的分析吧。
What is the design principle of the hole generated when forming the self sealing pocket? Let's have a professional analysis.
一些自封口袋形成一个盲孔,然后钻穿,这种方法适用于薄而深的孔,并防止型芯在成型过程中变形。塑料制品成型后没有孔洞,孔洞是后期加工的。后两种方法于尼龙等少数易于切割的材料。同时由于二次加工,生产效率低,细孔质量难以保证,所以很少使用。本节主要介绍成型时直接产生的孔的设计原理和加工方法。
Some self sealing pockets form a blind hole and then drill through. This method is suitable for thin and deep holes and prevents the core from deforming during the molding process. Plastic products have no holes after molding, and the holes are processed in the later stage. The latter two methods are limited to a few easy to cut materials such as nylon. At the same time, due to secondary processing, low production efficiency and difficult to ensure the quality of fine holes, it is rarely used. This section mainly introduces the design principle and processing method of the hole directly generated during forming.
对于成型时直接产生的孔洞,无论何种类型,都应设置在不易削弱制品强度的部位,孔洞的形状不应使模具制造工艺复杂化。它是成型产品中残留熔接线和强度减弱的重要因素。在其周围设置一个凸起的边缘以进行加固。同时,孔的间距和到产品边缘的距离也应适当。
For the holes directly generated during forming, no matter what type, they should be set at the parts that are not easy to weaken the strength of the products, and the shape of the holes should not complicate the mold manufacturing process. It is an important factor of residual welding line and strength weakening in molded products. A raised edge is set around it for reinforcement. At the same time, the spacing of holes and the distance to the edge of the product should also be appropriate.
所示的尺寸关系是确定的。当两孔尺寸不相同时,取小7L;热塑性自封袋的注塑产品取表2-7中数值的75%。对于孔的深度,不同类型的孔的深度随着成型方法的不同而不同。通孔注塑制品L使用较多,用于形成通孔的型芯一般有不同的安装方式。
The dimensional relationship shown is determined. When the sizes of the two holes are different, take the smaller 7L; 75% of the values in table 2-7 shall be taken for the injection products of thermoplastic self sealing bags. For the depth of holes, the depth of different types of holes varies with different forming methods. Through hole injection molded products L are widely used, and the cores used to form through holes generally have different installation methods.
济南自封口袋
芯内端固定成型,易产生飞边,铁芯薄时易弯曲。这种固定铁芯的方法不能形成深孔。它由两端固定的两个铁芯组成,因为一个铁芯被设计成比另一个更大。5-1mm左右,保证孔的同心度,不会给土的安装和使用造成困难,而且增加了芯的稳定性,孔的精度低。
The inner end of the core is fixed and formed, which is easy to produce flash, and the iron core is easy to bend when it is thin. This method of fixing the iron core cannot form deep holes. It consists of two iron cores fixed at both ends, because one iron core is designed to be larger than the other. About 5-1mm to ensure the concentricity of the hole, which will not cause difficulties in the installation and use of the soil, but also increase the stability of the core and the accuracy of the hole is low.
由一端固定,一端导向支撑的芯体组成,使芯体具有较好的强度和刚度,并能保证同心度,但导向部分容易因导向误差磨损而产生电弧闪光。不管上面用什么固定方法,孔的深度都不宜过大,直纹芯会弯曲。
It is composed of a core body with one end fixed and one end guided and supported, so that the core body has good strength and stiffness and can ensure concentricity, but the guide part is easy to produce arc flash due to guide error wear. No matter what fixing method is used above, the depth of the hole should not be too large, and the ruled core will bend.
流动性好的济南自封口袋深度可达10倍孔径,中等流动性不能超过7倍孔径,塑料制品流动性差的孔深度是小于4倍直径7L,否则只能通过机械加工获得。
The depth of Jinan self sealing pocket with good fluidity can reach 10 times the aperture, and the medium fluidity can not exceed 7 times the aperture. The hole depth of plastic products with poor fluidity is less than 4 times the diameter of 7L, otherwise it can only be obtained by machining.
所以的知识内容您已经了解了,如果诸如此类的问题您还有疑惑的话,那就来我们网站www.jnsuliao.com咨询吧。
So you already know the professional knowledge content. If you still have doubts about such questions, please come to our website www.jnsuliao.com Consult. Com.