How to deal with the warpage of metal inserts in injection molding

The demand for precision insert injection molding is increasing, and people have higher and higher quality requirements. Manufacturers must avoid quality problems during the injection molding process to ensure reliable product quality. There are many types of quality problems. This article introduces you to the problem of warpage and deformation of insert injection molded products. Where should you start to solve the problem? This problem is relatively difficult. Warpage and deformation should be solved mainly from mold design, while the adjustment effect of molding conditions is very limited. 1. When the deformation is caused by the residual stress caused by the molding conditions, the stress can be eliminated by reducing the injection pressure, increasing the mold and making the mold temperature uniform, increasing the resin temperature or using annealing methods. 2. When the stress and deformation are caused by poor mold release, the stress can be increased by increasing The number or area of u200bu200bthe push rods, and the setting of the demolding angle can be solved. 3. Because the cooling method is not suitable, the cooling method can be adjusted and the cooling time can be extended when the cooling is uneven or the cooling time is insufficient. For example, the cooling circuit can be placed as close to the deformed place as possible. 4. For the deformation caused by molding shrinkage, it is necessary to modify the design of the mold. Among them, it is very important to pay attention to making the product wall thickness consistent. Sometimes, as a last resort, we have to measure the deformation of the product and trim the mold in the opposite direction for correction. A resin with a larger shrinkage rate generally has a larger deformation of a crystalline resin than a non-crystalline resin. In addition, since the glass fiber reinforced resin has fiber orientation, the deformation is also large. [Related recommendation] Learn more: 精の corporate culture Learn more: Continuous improvement and innovation are the key factors for the survival of stamping companies Learn more: Why most stamping factories are unwilling to quote foreign trade companies