How to improve the production efficiency of screw barrel
How to improve the production efficiency of screw barrelThe screw of the injection molding machine is an important part of the plasticizing part of the injection molding machine. The quality of the screw barrel is of vital importance for improving the quality and quantity of the products molded by the injection molding machine.
How to improve the production efficiency of screw barrel
Methods to improve screw barrel production efficiency:
Improving production efficiency is one of the important goals of the development of a new co-rotating twin-screw extruder. It can be achieved by increasing the screw speed, enhancing plasticization and mixing capabilities. At the same screw speed, increasing the depth of the screw groove can greatly increase the delivery volume. Correspondingly, the plasticizing and mixing ability of the screw is also increased, which requires the screw to withstand greater torque. At high screw speeds, the residence time of the materials in the extruder is reduced, which may make the materials plasticized, melted, and mixed insufficiently. For this reason, it is necessary to increase the screw length appropriately, which in turn inevitably leads to an increase in the actual load torque and power of the twin screw extruder. Increasing the free volume of the screw groove is also an important factor.
In the feeding section and devolatilization section, it is very necessary for the threaded element to have a large free volume. For bulk materials, increasing the free volume of the feeding section and the fullness of the material in the screw groove can greatly improve the production of the extruder ability. To increase the torque and speed, the deceleration distribution box needs to be carefully designed. To greatly increase the torque index of the equipment, higher requirements will be placed on the design and manufacturing level of the transmission box. The higher the torque, the higher the design, manufacturing accuracy, material strength and heat treatment requirements of the gears, output shafts, bearings and other parts in the transmission box. At the same time, the design and manufacturing accuracy requirements of the screw mandrel, threaded components and kneading discs are also required higher. Because the free volume of the threaded element needs to be increased, the center distance between the two screws will decrease when the outer diameter of the screw is unchanged, which will make the problem of insufficient installation space for the matching gear and thrust bearing become more prominent.
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