Small injection molding machine is an important equipment in the production of plastic products. The injection speed and injection pressure are two key parameters that determine the product quality. Reasonable adjustment of injection speed and pressure can ensure that plastic materials can fully fill the mold to form a good product appearance and performance. Lower combined lift Horizontal injection molding machine The adjustment method of injection speed and pressure parameters of small injection molding machine, as well as the impact on product quality, will be introduced.
1. Injection speed adjustment method:
Injection speed refers to the speed at which plastic materials enter the mold cavity from the injection system of the injection molding machine. The injection speed can be adjusted through the injection molding machine control system, and there are generally the following methods:
a. Set the ejection speed: set the appropriate ejection speed according to the shape and size requirements of the product. Smaller products or thin-walled products usually require higher injection velocities, while larger products may require lower injection velocities.
b. Adjust the ejection velocity curve: the ejection velocity curve refers to the change rule of velocity during ejection. By adjusting the injection velocity curve, the injection velocity control at different stages can be realized, so that the plastic material can get better filling effect when injected into the mold.
c. Monitor the injection speed: monitor the change of the injection speed in real time, and adjust the injection speed parameters in time according to the injection state and surface quality of the product.
2. Injection pressure regulation method:
Injection pressure refers to the pressure exerted by plastic materials entering the mold cavity during injection molding. The injection pressure can be adjusted in the following ways:
a. Set the injection pressure: set the appropriate injection pressure value according to the material characteristics and shape requirements of the product. Different materials and products may require different injection pressures.
b. Adjust the injection pressure curve: the injection pressure curve refers to the change rule of pressure during injection. By adjusting the injection pressure curve, the injection pressure control at different stages can be realized to ensure that the plastic material can fully fill the mold.
c. Monitor the injection pressure: timely monitor the change of injection pressure, and timely adjust the injection pressure according to the injection state and surface quality of the product.
3. Factors affecting product quality:
Injection velocity and injection pressure are important factors affecting product quality. Too high or too low injection speed and pressure may lead to unstable product quality and defects. Specific impacts include:
a. Inadequate filling: low injection speed and pressure may lead to insufficient filling of plastic materials, resulting in short filling, mold turnover and other defects.
b. Scorching or insufficient glue melting: too high injection speed and pressure may cause shear failure of plastic materials during injection, or even scorching, affecting the appearance and performance of products.
c. Bubbles and traces: unreasonable injection speed and pressure parameters may lead to bubbles or traces in the product, reducing the quality of the product.
d. Mold damage: excessive injection pressure may cause excessive force on the mold, resulting in mold damage or accelerated wear.
Therefore, when adjusting the injection speed and pressure, it is necessary to conduct reasonable parameter selection and real-time monitoring according to specific product requirements and plastic material characteristics to ensure the stability of the injection process and product quality.
Small injection molding machine It plays an important role in the production of plastic products. It is very important to reasonably adjust the injection speed and pressure parameters to improve product quality and reduce production costs. Through precise control and adjustment, small injection molding machines can meet the production needs of different products and provide high-quality plastic products for various industries. With the continuous development of science and technology, the technology and performance of small injection molding machines will continue to improve, bringing more innovation and development opportunities for the production of plastic products.
