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济南注塑加工气纹缺陷解决方法

来源:http://www.sdlqmj.com 日期:2020-06-02 发布人:liqiang 浏览次数:
  气痕是一种容易产生且难以消除的质量缺陷。空气管路不仅影响产品的外观,而且影响产品的强度。针对注塑制品气纹缺陷,分析研究了气纹产生的因素,阐述了气纹产生的机理和现象,并根据不同气纹的特点制定了相应的对策。在生产过程中,根据观察到的现象做出准确的判断,可以推断出产生气纹的原因,然后制定出相应的消除措施来解决问题。
  Air mark is a kind of quality defect which is easy to produce and difficult to eliminate. The air pipeline not only affects the appearance of the product, but also affects the strength of the product. In view of the defects of gas lines in injection molding products, this paper analyzes the factors of gas lines, expounds the mechanism and phenomenon of gas lines, and makes corresponding countermeasures according to the characteristics of different gas lines. In the production process, according to the observed phenomenon to make an accurate judgment, we can infer the reason of producing gas streaks, and then formulate the corresponding elimination measures to solve the problem.
  我们可以用以下两种方法来解决这个问题。
济南注塑加工
  We can solve this problem in two ways.
  一种修改方法是,如果模具和注塑件的形状允许,可以在模具的小型腔中加入排气销。喷胶时,型腔内的空气容易通过排气针排到模具外,避免了在小凸台根部产生气痕。该方法简单有效,生产易于控制,废品率低,对调谐器技术的要求也低,是一种很好的解决方案。然而,在许多情况下,不允许打开排气针。此时,您需要使用以下调优技术。
  One modification is to add an exhaust pin into the small cavity of the mold if the shape of the mold and the injection part allows. When spraying, the air in the cavity is easily discharged to the outside of the mold through the exhaust needle, avoiding the air trace at the root of the small boss. This method is simple and effective, easy to control in production, low reject rate, and low requirement for tuner technology. It is a good solution. However, in many cases, opening the vent needle is not allowed. At this point, you need to use the following tuning techniques.
  这种调谐器方法是,当胶水接近小凸凸凸台的位置时,有必要立即转慢拍胶,让胶水慢慢地通过小凸凸台根部。因为小腔的空气中不影响胶融化,也慢慢压成小腔的顶部的胶融化,并且不跑出小凸老板,小的根凸老板不会有空气标志的问题。因为你不能一直缓慢的打胶,否则会导致注塑件不均匀。因此,当熔胶通过小老板根部时,应立即将其转移回快干胶或中干胶中。采用这种方法的关键是找到一个好的一级和二级缓烧橡胶的转换点。起得早,注塑件容易缺料;如果你起床晚了,航空公司仍然会出现。另外,慢速快喷胶的速度一定要足够慢,一定要慢到不产生空气管路,太慢容易产生材料不足的问题。这种调机技术需要一定的经验,初学者是不容易掌握的,需要在练习中慢慢练习,但它是一种技术,初学者一定要学会掌握。学习使用“模具透明法”,加速掌握这一技术是很好的。
  The method of this kind of tuner is that when the glue is close to the position of the small convex boss, it is necessary to turn the slow pat glue immediately to let the glue slowly pass through the root of the small convex boss. Because the air in the small cavity does not affect the glue melting, and the glue at the top of the small cavity is slowly pressed to melt, and does not run out of the small convex boss, the small root convex boss will not have the problem of air sign. Because you can't glue slowly all the time, otherwise it will lead to uneven injection parts. Therefore, when the melt glue passes through the root of the small boss, it should be transferred back to the quick drying glue or medium drying glue immediately. The key to adopt this method is to find a good conversion point of the first and second stage slow burning rubber. If you get up early, injection molding parts are prone to material shortage; if you get up late, the airline will still appear. In addition, the speed of slow and fast glue spraying must be slow enough, and it must be slow enough not to produce air pipeline. Too slow is easy to produce the problem of insufficient materials. This technology needs some experience. Beginners are not easy to master. They need to practice slowly in practice, but it is a technology. Beginners must learn to master it. It's very good to learn to use "mold transparency method" and speed up mastering this technology.
  注射部的小凸头是在模具相应位置的小空腔。在注射过程中,当熔融胶通过小腔体时,腔体内的空气受到熔融胶体的冲击,向腔体外排出。因此,注射部件在小凸台的根部留下一块气粒或喷射粒。这种气纹的危害除了严重影响外观时外,有时很轻微的气纹,也会使喷漆后注塑件产生的哑色纹类似于烧胶。特别是在喷涂银色或透明涂料时,即使肉眼难以识别的空气纹,也会产生哑光色纹。这个问题是经常遇到的注塑和注塑生产的玩具和电器零件。要解决这个问题,我们必须尽量在打胶的过程中使空气在模具的小型腔中,这样才不会排出型腔外,造成气痕。
  The small convex head of the injection part is a small cavity at the corresponding position of the mold. In the process of injection, when the molten glue passes through the small cavity, the air in the cavity is impacted by the molten colloid and discharged to the outside of the cavity. Therefore, the injection part leaves a piece of air particle or jet particle at the root of the small boss. In addition to seriously affecting the appearance, the damage of this kind of gas grain is sometimes very slight, which also makes the dumb color grain produced by injection molded parts after painting similar to burning rubber. Especially when spraying silver or transparent paint, even the air marks that are difficult to be recognized by the naked eye will produce matte color marks. This problem is often encountered by injection molding and injection molding of toy and electrical parts. To solve this problem, we must try our best to make the air in the small cavity of the mold in the process of gluing, so as not to discharge out of the cavity and cause air marks.
  以上是济南注塑加工公司小编为大家介绍的相关内容,想要了解更多内容,欢迎访问网站:http://www.sdlqmj.com
  These are the relevant contents introduced by Jinan injection molding company. If you want to know more, please visit the website: http://www.sdlqmj.com

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