For the improvement and efficiency of the twin-screw extrusion machine, start with the cooling box and side feeding

Twin-screw #extruder is commonly used in plastic production and processing. In the actual processing and production process, the twin-screw extruder takes advantage of its own superior performance to improve the utilization rate of material resources and reduce the residual amount of material inside the extruder.Based on the continuous expansion of the scale of production and processing, the modified plastics production and processing industry has put forward higher-level requirements for the process performance of the twin-screw extruder itself.

Cooling box renovation

Through the addition of a cooling box in the twin-screw extruder, the improvement and optimization of the production process level of the twin-screw #plastic extruder is realized. In the actual extrusion production process, a humidity control exhaust device is added to the cooling box, which greatly reduces the cold loss of plastic products, and under the installation of heat insulation panels, circulating air is formed to ensure that the products are in a good state of separation, and the heat dissipation effect is obvious; the chain in the cooling box optimizes the transmission mode of plastic products, and by adjusting the frequency of the main motor, the cooling box and the twin-screw extruder are running synchronously; with the support of the support rod, the distance between the plastic product and the contact box is narrowed to prevent adhesion. To effectively meet the actual production needs, achieve the goal of improving the production quality of plastic products, ensure the diversification of plastic product production, and broaden the application range and field of twin-screw extruder.

Improvement of side feeding device of twin-screw #extrusion machine

Reduce the air mixed in the feeding process

An exhaust port is set upstream of the side feeding port, the original screw is replaced with a lead screw, and the side feeding hopper is divided into two parts, the front part is used for venting and the rear part is used for feeding. The lead screw supports the compaction of the packing during the feeding process, and smoothly discharges the mixed air through the front part of the hopper, and finally discharges the air through the exhaust port upstream of the side feeding port.

Free space is reserved for the feeding port on one side

By increasing the free space of the feeding port on one side, the actual filling volume requirements are met.Based on this, a large-lead screw element is designed on the basis of the existing screw, an asymmetric screw element is set upstream of the feeding port on the side of the screw, a reverse conveying element is designed on one side of the feeding port on the side of the screw, and a reverse slotting element is designed on the other side. When the material is transported by the extruder, the material enters the main feeding port and enters the extruder. The screw continues to be transported forward and is heated and melted. When the material reaches the asymmetric element, it is in a molten state. Under the action of the asymmetric element, the distribution state of the material changes significantly. The feeding port on one side is transported in reverse, and the other side is transported in reverse. Synchronous reverse conveying, in the process of reverse conveying of materials, one side of the feeding port forms a cavity under the action of the reverse conveying element, which greatly increases the amount of filler added to the side feeding device.

Dual feeding system

The original single-feeding mode was transformed into a dual-port simultaneous feeding mode to form a “dual-feeding system”. During the actual transformation process, it was found that the gaskets under the feeding system were displaced under the action of vibration. In the second transformation, a fixed bracket was added to effectively solve the vibration displacement problem, optimize the packing process and links, and achieve the goals of mixing, extrusion, and shearing of the main materials at a certain temperature, and the quality of the products after production and processing is higher.