Hot mixing machine for plastic processing

Abstract

The invention belongs to the technical field of plastic processing equipment and particularly discloses a hot mixing machine for plastic processing. The hot mixing machine comprises a hot mixing unit,a power unit, a transmission unit and a preheating unit, wherein the hot mixing unit comprises a fixing cylinder, a hollow rotating shaft and a rotating cylinder; a one-way discharging door and a spiral blade are arranged on the side wall of the hollow rotating shaft; a feeding port and a discharging port are formed in the side wall of the fixing cylinder; a heating cavity is formed in the side wall of the rotating cylinder; a groove is formed in the outer wall of the rotating cylinder; the preheating unit comprises a rack, an air pipe, a supporting plate and a threaded rod; the threaded rodand the hollow rotating shaft are connected through the transmission unit; a pressing plate is in threaded connection with the threaded rod; a pushing rod is arranged on the pressing plate; a corrugated pipe is connected between the pressing plate and the supporting plate; a one-way air inlet valve is arranged on the corrugated pipe; a heating device is arranged in the corrugated pipe; two ends ofthe air pipe correspondingly communicate with the corrugated pipe and the hollow rotating shaft; and a one-way air exhaust valve is arranged on the air pipe. By use of the hot mixing machine, variousresins can be effectively heated to the fixed temperature while being uniformly mixed.

Description

technical field [0001] The invention belongs to the technical field of plastic processing equipment, in particular to a thermal mixer for plastic processing. Background technique [0002] Thermal mixer is one of the essential equipment in the plastic processing industry. It is mainly used for uniform mixing of various resins such as polyvinyl chloride and other auxiliary materials and achieving the purpose of process temperature in a short time. It is also suitable for pellets such as polyethylene and polypropylene. Drying before coloring, mixing and mild resin products. The mixing process is not only a physical process but also a complex chemical process. The high-speed impact, shearing, scattering, and material self-friction of the blades in the thermomixer make it reach the specified end point temperature according to the set temperature gradient requirements, and During this period, the requirements of homogenization, macromoleculeization, and preplasticization are simu...

AI Technical Summary

Problems solved by technology

The existing thermal mixer has the following problems. If more resin is added during thermal mixing, the resin is placed at the bottom of the thermal mixing cylinder, and it is difficult for the stirring blades to mix various resins evenly. Moreover, the resin is heated by introducing hot air. It is difficult to fully contact with the resin, and each resin is prone to uneven heating

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