Introduction to the process elements of metal insert injection molding

With the increasingly fierce competition in the market now, and the process requirements for metal insert injection molding are getting higher and higher, we should first understand the process elements of insert injection molding in order to use them rationally and produce better products. The elements are introduced below. 1. Temperature A, temperature: For hydraulic machines, it is the heat generated by the friction of the hydraulic oil in the continuous operation of the machine. It is controlled by cooling water. Make sure that the oil temperature is around 45℃ when starting up. Too high or too low will affect the transmission of pressure. B. Material temperature: the barrel temperature. This temperature should be set according to the shape and function of the material and product. If there is a file, set it according to the file. C. Mold temperature: This temperature is also an important parameter. Its height has a great influence on the performance of the product. Therefore, the function and structure of the product must be considered when setting it, and the material and cycle must also be considered. 2. Pressure A. Injection pressure: According to the size of the product and the thickness of the wall, from low to high, other factors should be considered when debugging. B. Holding pressure: The holding pressure is mainly to ensure the product shape and stable size, and its setting should also be set according to the structure and shape of the product. C. Low pressure protection pressure: This pressure mainly protects the mold and makes the damage of the mold reach a lower limit. D. Clamping force: refers to the force required for mold clamping to generate high pressure. Some machines can adjust the clamping force, while others cannot. 3. Speed u200bu200bA. The speed setting of mold opening and closing. The setting of mold opening and closing is generally based on the principle of slow-fast-slow. This setting mainly considers the machine, mold, and cycle. B. Ejection setting: It can be set according to the structure of the product. If the structure is complex, use slow ejection and then use fast demolding to shorten the cycle. C. Rate of fire: Set according to the size and structure of the product. If the structure is complex and thinner, it can be fast. If the structure is simple and thick, it can be slow. According to the performance of the material, set it from slow to fast. 4. Time A. Glue injection time: This time must be set to be longer than the actual time, and it can also play a role in the protection of the injection. The set value at the time of injection is about 0.2 seconds larger than the actual value, which should be considered when setting. Coordination with pressure, speed and temperature. B. Low-voltage protection time: This time is in manual mode, first set the time to 2 seconds, and then add about 0.02 seconds to input according to the actual time. C. Cooling time: This time is generally set according to the size and thickness of the product, but the melting time should not be greater than the cooling time, so that the product can be fully shaped. D. Holding pressure time: This time is the time to cool the gate before the melt is allowed to flow back under the pressure of holding pressure in order to ensure the size of the product after the injection is completed. It can be set according to the size of the gate. 5. Position A. The mold opening and closing position can be set according to the mold opening and closing speed. The key is to set the starting position of the low pressure protection, that is, the starting position of the low pressure should be very likely to protect the mold without affecting the cycle. Point, the end position should be the position where the front and back molds of the mold touch when the mold is slowly closed. B. Ejection position: This position is sufficient for complete demolding of the product. First, set it in increments from small to large. Note that the retracted position must be set to '0' when installing the mold, otherwise the mold will be easily damaged. C. Melting position: Calculate the amount of material according to the size of the product and the size of the screw, and then set the corresponding position. D. The V-P position should be ascended from large to small, that is, the Short-Short method to find the V-P position (that is, the V-P switching point). [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