High speed injection molding machine It is the key equipment for manufacturing plastic products, and its injection speed is one of the important factors affecting the appearance and quality of products. In the process of injection molding, the injection speed has an important impact on the shape, surface finish and consistency of the product. This article will discuss the relationship between the injection speed of the high-speed injection molding machine and the product appearance to help you better understand this key factor.
1、 Definition of ejection velocity
First, let's define the ejection velocity. The injection speed refers to the speed at which the high-speed injection molding machine pushes molten plastic into the mold cavity. It is usually expressed in millimeters per second (mm/s) or cubic centimeters per second (cm ³/s). The injection speed is controlled by the control system of the high-speed injection molding machine, which can be adjusted according to the requirements of different products.
2、 Relationship between injection speed and product appearance
Filling performance: the injection speed has a direct impact on the filling performance of plastics. If the injection speed is too fast, the plastic may not be able to fully fill the mold, resulting in defects and bubbles on the surface of the product. On the contrary, if the injection speed is too slow, it may cause the plastic to solidify in the mold, which will also affect the appearance of the product.
Surface quality: proper injection speed can help to achieve a smooth surface of the product. The injection speed of high-speed injection molding machine is too fast, which may lead to incomplete melting of plastic before injection into the mold, leaving traces or uneven texture on the product surface. Choosing an appropriate injection speed can reduce these problems and ensure the appearance quality of the product.
Product shape: the injection speed will also affect the shape and dimensional stability of the product. In high-speed injection molding machines, too fast injection speed may lead to unstable product shape, especially at the edge. Therefore, the control of injection speed is very important for the production of products with complex shapes.
Appearance defect: the injection speed is not only related to the surface quality, but also related to the appearance defect. Excessive injection speed may lead to appearance defects of products, such as warpage, deformation or melting marks. Therefore, in the production process, the injection speed needs to be carefully controlled to avoid these problems.
3、 How to select the appropriate shooting speed
The key is to select a suitable ejection speed, which needs to consider the following factors:
Plastic type: different types of plastics have different requirements for the injection speed. Some plastics require higher injection speeds, while others require lower speeds. Therefore, the first thing to know is the characteristics of the plastic used.
Product design: the shape and structure of the product will also affect the selection of the ejection speed. Complex products may require different injection speeds to ensure filling performance and appearance quality.
Mold design: mold design and channel structure will also affect the injection speed. Reasonable mold design can reduce the impact of injection speed on products.
Experiments and tests: Before production, carry out some experiments and tests to determine the best injection speed. This can help optimize the production process and improve the appearance and quality of products.
In a word, the injection speed of high-speed injection molding machine is closely related to the product appearance, which needs careful control and selection. Appropriate injection speed can ensure the surface quality and consistency of products, thus improving production efficiency and product competitiveness. By understanding the impact of injection speed, manufacturers can better respond to the needs of different products and provide high-quality plastic products.
Liansheng Precision is a professional Injection molding machine manufacturer Provide injection molding machine equipment of various specifications and models. The company is committed to developing and producing high-quality injection molding machines to meet the needs of customers in the production of plastic products.
