ABOUT VERTICAL INJECTION MOLDING

Vertical Injection Molding 2

Table of Contents

垂直注塑成型在与常规注塑成型相同的基本原理上。方向的简单变化在制造过程中产生了巨大差异。许多制造商在效率方面,每一项都不明白。在本文中,我们看看垂直注塑机的特点。专注于那些使它们更好的一些应用程序。这样做,我们也看看为什么他们对某些应用程序不太好。您当然想知道垂直注塑成型是否适用于您的预期产品。我们探讨了垂直注塑成型具有优势的产品的一些示例。

Vertical Injection Molding 1

H1。流程说明

The horizontal injection molding process has long been in use before the vertical. So in some parts of the article, it refers to the horizontal system as the conventional system. Injection molding systems are of different types. The classifications are on different bases. For example, for classification based on the runner. Here we have hot runner systems and cold runner systems. There are also classifications based on when powers the injection process. In that case, we talk about electrical, hydraulic of the one that combines both; hybrid. The article discusses classification based on the orientation of the machine. Other articles within the blog cover other classifications. Horizontal and vertical injection molding machines function on the same fundamental working principles. The difference in their orientation affects how they perform their functions. This is like a human being laying down or standing up. There are some activities that are better performed standing up. Also, some activities are better done while laying down or seated.

Other than orientation difference, the manner in which the mold loads varies. In the vertical injection molding system, the mold moves away from the injection unit. This allows two activities to occur at the same time. The filling of the melt chamber occurs while the mold is being unloaded and reloaded. This is even more important for insert molding.

垂直注塑成型中的模具设计与传统系统的模具设计不同。在更简单的设计中,模具的上半部分保持连接到喷射单元的喷嘴。在这种类型的垂直喷射系统中,模具填充,冷却,然后打开。喷射单元与模具的上半部分一起缩回。这使得时间卸下模具,而下一个循环开始填充喷射室。

A different design uses a book mold. As the name implies, the mold opens like a book. The mold has a hinge on the side to ease opening and closing. This injection unit detaches from the mold after filling. This type of design has the advantage of ensuring the mold closes and opens, in the same way, every cycle. This is great for insert molding as in ensuring the inserts remain in place. If the inserts move about during the process this could lead to a defect in the product. The vertical injection molding systems are usually installed with a table. This is either a rotating table or one that moves back and forth. This way the operators can work on the mold (loading & unloading) moved away from the injection unit. The image below illustrates the main components of a vertical injection molding system.

Illustration of main components of vertical injection molding system

H2. Where vertical Injection molding might be Helpful

现在让我们看看垂直注塑成型是更好的选择。与水平注射成型相比,这是相比之下的。本节实质上看着垂直系统的优势。

(1)你有限的楼层空间

The vertical orientation of the mold means it takes up much less space. It has always been a good idea to build upwards than sideways. Think about buildings for instance. In cities with less space, you’d find many story buildings housing more people per square meter. In a similar way, vertical construction is gaining more attention in agriculture. The need to grow more food per square meter is more urgent now. As the population increases, we need more land space for manufacturing and homes. Multistorey car parks? I could go on. More companies are being started on a low budget these days. Chances are if you are a small startup in plastic injection molding, space is scarce. You don’t have more than a few tens of square feet space to work with. Vertical injection molding will allow you to fit your process into a smaller space. You can do this without compromising yield or efficiency.

(2)您正在进行插入成型

在一些产品中,塑料覆盖了预先形成的物体或衬底。塑料熔化模具在预制物体上。该过程是插入成型。这种变化是超成的。这是衬底形成的地方。然后,然后在第一个物体上形成另一个塑料。这些过程需要基础上的对象保持稳定。如果该对象在此过程中被误,这会导致缺陷的产品。垂直成型过程使这更容易。这是因为基板重力有助于将插入件保持到位。 The insert sits in the mold and the machine injects the melt. The mold cools, the product gets removed and the cycle repeats. The loading and demolding occur either by the operators or by using robotic arms. To do this in the horizontal injection molding design would be more cumbersome. The horizontal systems are usually designed to open up the mold and the product drops into a bin.

(3) You want better Energy and Material Efficiency

The vertical design allows you to make the most of gravity. In the horizontal design, the pellets fed into the hopper need exerted force to move. This is because they move against gravity in the horizontal axis through the barrel. In the vertical injection molding system, gravity aids movement. Gravity also aids the flow of the melt. In conventional injection molding, the shot size is larger. This is because it includes the material retained in the melt chamber. In the vertical orientation, there is less chance of melt retention in the chamber. This reduces wastage of plastic and of energy used. Plastics tend to degrade upon repeated heating. So it is not desirable to have melt retained in the barrel. This exposes the plastic to heat for longer. If gravitational force is forcing the downward flow of pellets and melt. This means less chance of backflow. So in the vertical injection molding, the check valve at the nozzle might not be necessary. At the very least if it exists, it would be doing less work and wouldn’t need as much replacement.

The pressure required to hold the mold in place as it cools is also derived from the weight of the injection unit. Where it includes a clamping unit, this is only done as an added safety measure. This also reduces the labor in the opening and closing of the mold. The lifting off of the injection unit to begin another cycle does the job if opening and closing the mold.

(4)你是生产设计与th不止一个e Same Material

立式注塑总是带有一个form of moving table. This is either rotating or going back and forth. This allows for the loading and unloading of the mold and/or the insert. This means different inserts placed in the mold and different molds used in one cycle. Note that although vertical injection molding is great for inserts and different molds. This does not make it any less ideal for uniform molding of identical parts with no inserts or overmolds.

H5. Example products made using Vertical Injection Molding

立式注塑成型使产品变得多样化。这包括使用水平注射成型制造的所有产品。本节的目的是查看一些特定的应用方案。特别地,特别是使用垂直注塑材料具有更好的输出的那些。拥有这一先前的知识辅助讨论专业的模具制造商或制造商。这有助于您更好地了解最适合您预期的产品。

Medical products

许多医疗设备需要将其他材料掺入热塑性物体中。注塑成型这些部件允许无缝设计。加工和加入等方法承载表面缺陷和孔的风险。即使在灭菌期间,任何表面故障也用作微生物的隐藏点。例子是传感器。这些具有嵌入热塑性结构内的金属组分。其他示例是电线,手术工具,管和电缆。

Electronics

在电子器件中,通常需要在电路中连接不同的导体。电路需要绝缘以保护用户并保护组​​件。制造商通过在塑料或其他绝缘材料内包装成分来实现这一点。插入成型通常用于生产这种电子产品。如本文所讨论的,使用垂直注塑成型最好地实现插入模塑。

Hand Tools

许多手动工具是强硬组件如金属的组合。这些组件需要具有良好的抓地力,以便有效处理。塑料和弹性体通常用作这些工具的手柄。许多这些工具都有大力施加在它们上。因此,握把和主部件之间的附件必须强大。胶合和焊接经常引入弱斑,导致破损。使用工具的这种失败可能是非常危险的。对于这些产品,嵌件成型达到了更好的附着。将塑料塑造在硬构件周围,产生永久性密封。

Automotives and equipment

Equipment and vehicles can have up to hundreds of components and over 1000 steps in one product. Many of these components joined together as one unit to perform a single function. Several injection molded parts occur in vehicles and many types of equipment. Many of these use vertical injection molding. Examples of such components include filters, car keys, brackets, connectors, and circuits. Products such as these have a useful lifespan of several years, decades even. Vehicles in particular have several moving parts. These parts must be durable and well installed. So the parts need high standard using advanced techniques like vertical injection molding. The process also allows for better aesthetics beyond what conventional injection molding offers.

In general avoiding glues, welding and other joining reduce product components needed. It also increases the number of stages needed to build the part. In every manufacturing process, introducing more components means more room for failure. Introducing more stages also does the same. Vertical injection molding reduces the opportunities for defects. This is especially true when adapted for insert molding

Vertical injection molding has the same advantage and limitations as conventional injection molding. For example, shrinkage will still occur as it would in the horizontal system. When using cold runners, scrap is still an issue that processors must handle. The materials molded using the horizontal system is still the same as those in vertical. Having the right information helps to decide if vertical injection molding is suitable.

H6。参考

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