The injection molding effect of plastic processing equipment meeting the following conditions is amazing
When the plastic processing equipment starts injection molding, in fact, in order to improve the injection molding effect of the equipment, you can make some adjustments. If all the speed changes of the plastic processing equipment are adjusted within the standard range, you can feel that the injection molding effect of the equipment will be very good, Therefore, I hope you can adjust the plastic processing equipment according to the methods described below.
● mold closing and pressing of plastic processing equipment: in principle, it shall be greater than the total pressure of plastic injected into the mold, based on no burr.
● the pressure and speed of plastic processing equipment have the same relationship and act on the mold, so that the raw materials can enter the mold evenly and thoroughly, and fill all corners in an appropriate amount. If it is too low, it will be short shot, shrink, and if it is too high, there will be hairiness, over satiety, mold sticking, charring, vulnerable mold and high internal stress.
● speed: the speed of plastic processing equipment determines the condition of raw materials in the mold sprue and finished products. There are burrs, too full, slow burning, short shot, shrinkage, poor combination, easy to break, etc.
● temperature: different raw materials, different temperatures, too low, uneven color of solution glue, increased internal stress of finished products, too low temperature and too high pressurization may cause screw fracture of plastic processing equipment. If the temperature is too high, the product has rough edges, and the temperature difference due to cooling causes shrinkage, the raw materials will decompose, turn yellow, change color, easy to fracture, the cooling time will be longer, the gas is not easy to be discharged, and there will be gas.
● the mold temperature and cooling time of plastic processing equipment, which affect the mold sticking, shrinkage, dimensional tolerance, surface brightness, cycle, etc. of finished products, shall be adjusted in time according to the actual situation. In addition, if the finished meat of acrylic and PC is thick, there shall be mold temperature to prevent bubbles and stress.
● back pressure: the resistance of the screw to retreat when rotating and feeding is called back pressure, which makes the raw material more compact in transportation and compression, and can discharge the air and water of the raw material from behind the screw. Make the sol free of gas components affecting the surface of the finished product, low will have bubbles, surface crazing, high will overheat, caking, glue overflow, long cycle, and the screw will not return; At the same time, the application of loosening is very important. When the back pressure is low, some raw materials need to be loosened, while others do not need to adjust the back pressure according to various raw materials of different properties. When the back pressure of plastic processing equipment is high, it is necessary to use loosening and pay attention to the distance, do not intervene in air and do not overflow glue.
The above is all we share for you. I believe you have a deeper understanding of the adjustment of plastic processing equipment after reading this article; If you still have anything unclear, you can call us at any time, and our staff will answer for you one by one.
