How to check the production efficiency of an injection molding machine

To see how much the production efficiency of an injection molding machine can be achieved, you can start from the following key aspects：
Mold opening and closing speed: This is the key time-consuming indicator to complete the mold opening and closing steps in an injection molding cycle, generally measured in seconds.The mold opening and closing speed of advanced injection molding machines can be as fast as 3-5 seconds, compared with about 8-10 seconds for ordinary injection molding machines.For example, for the production of small plastic daily necessities, injection molding machines with fast mold opening and closing complete 2-3 more injection molding per minute than slow machines, and the daily output quantity is significantly different.You can directly check the equipment parameter manual to obtain the mold opening and closing speed data, and you can also accurately grasp the average value of multiple measurements through the stopwatch when the equipment is actually running.
Injection speed: In cubic centimeters per second (cm3/s), it reflects the speed at which the plastic melt is injected into the mold cavity.The injection speed of the high-performance injection molding machine can reach 500-800cm3/s, and the strong injection force can quickly and evenly fill the mold and improve the molding efficiency.Like the production of precision electronic accessories, rapid injection guarantees dimensional accuracy and reduces the molding time of a single product.The operation panel of the equipment can usually display the current injection speed setting value, and a professional flow meter can also be used to measure the actual flow rate of the plastic melt and calculate the injection speed during the trial production phase.
Plasticizing capacity: The melting plasticizing efficiency of plastic raw materials is determined by the screw diameter, aspect ratio, and screw speed.The large-diameter screw, combined with the adapted aspect ratio and high speed, can quickly convert the solid plastic into a molten state and provide a stable raw material flow.When processing engineering plastics, injection molding machines with strong plasticization capabilities process 20-30 kg more raw materials per hour than ordinary models.Check the equipment manual to see the screw parameters, record the weight of raw materials consumed per unit time in production, and evaluate whether the plasticizing capacity is up to standard.
Degree of automation: The highly automated injection molding function automatically loads, releases, detects, and sorts products to reduce manual intervention and errors and improve efficiency.Taking a large plastic toy factory as an example, after the introduction of fully automated production lines, the number of workers has been reduced from 10 to 2-3, and the output has increased by 30%-40%.Observe whether the equipment is equipped with automation components, as well as the number of manual operation links and the proportion of time in actual production, to judge the contribution of automation to efficiency.
Consideration of external factors: the complexity of product structure, the rationality of mold design, and the characteristics of plastic raw materials also affect production efficiency.Complex product structures require fine craftsmanship to extend the molding cycle; poor mold cooling increases the cooling time; there are differences in the fluidity and melting temperature of different raw materials, and the injection molding machine needs to adjust the parameters accordingly.Analyze the product design drawings and the layout of the mold cooling water circuit, set the parameters of the injection molding machine according to the raw material manual, and observe and adjust in the trial production, and comprehensively judge the effect of these factors on efficiency.