How to handle the crystallization double liquid screw dispensing valve
Why is there such a big relationship between the filling of lithium battery modules and the selection of needles? The length of the lithium battery cover plate is different, and too short needles cannot penetrate the bottom to transport glue. Although the glue also has fluidity, it is difficult to penetrate the entire area. Therefore, it is necessary to choose a needle of appropriate size, and the area size can meet the requirements. When fully automatic dispensing machines and dispensing machines are applied to common packaging products such as electronics and LEDs, special processing is often required in the production process according to the packaging requirements of the packaging products. Below is a specific introduction to some special process requirements often encountered during the packaging process due to the special nature of colloids.
Before packaging operations, some liquids that are prone to producing bubbles need to undergo defoaming, heating, stirring, and drying to eliminate the bubbles in the colloid. Until the bubbles inside the colloid are reduced to a minimum level close to zero. In order to achieve better drying treatment results, it is often necessary to install an external vacuum pump to store the colloid in a stainless steel pressure cylinder, and then use the external vacuum pump to suction, ensuring the elimination of bubbles inside the colloid. Some colloids need to be heated before packaging. This is mainly aimed at colloids that are solid or have poor fluidity, high viscosity, and are prone to bonding and solidification at room temperature. Auxiliary heating process is needed to convert the colloid into a liquid state, ensuring sufficient flow of the colloid during the packaging process and ensuring packaging quality. The heating process needs to be accompanied by a heating temperature control system. The automatic dispensing machines produced by Xiamen Shirui can provide customers with an additional set of heating and boosting devices.
In addition to heating treatment, some colloids that are prone to crystallization when exposed to moisture in the air also require special production processes. Among them, PU materials are the most prone to crystallization. Liquid crystallization not only affects the packaging quality of products, but also causes blockages and affects the performance of equipment during the packaging process. The solution to this problem is to use inert gas for propulsion.
