Double-step die surface hot cutting device

Abstract

The invention provides a double-step die surface hot cutting device. The double-step die surface hot cutting device comprises a hopper, a parallel double-screw extruder, an exhaust port, a vacuumizingport, a discharging cover, a discharging port, a conical double-screw extruder, a die surface hot cutting die head, a material collecting port, a vibrating screen, a discharging pipe, an air inlet, amaterial conveying pipe, a material bin and a discharging port. A feeding hole, the exhaust port and the vacuumizing port are distributed in the upper part of the parallel screw extruder; the discharging cover at the right side of the parallel screw extruder is connected with the discharging port of the conical double-screw extruder; the vacuumizing opening is formed in the conical double-screw extruder; the die face hot cutting die head is arranged at the right side of the conical double-screw extruder; the vibrating screen is arranged under the die face hot cutting die head and connected with the conveying pipe of the material bin through the discharging pipe; the exhaust port is formed in the upper portion of the material bin; and the discharging port is formed in the lower portion ofthe material bin. The high-filling wood-plastic material particles are prepared through the double-step die surface hot cutting device combining the parallel double-screw extruder and the conical double-screw extruder; and the particle texture is uniform, the production efficiency is high, the quality is stable, and the oxidative degradation rate of the material is low.

Description

technical field [0001] The invention relates to the field of hot cutting devices, more specifically, to a two-stage die surface hot cutting device. Background technique [0002] Wood-plastic composites (Wood-Plastic Composites, WPC) is a new type of composite material that has been booming at home and abroad in recent years. It refers to the use of polyethylene, polypropylene and polyvinyl chloride, etc. Wood flour, rice husk, straw and other waste plant fibers are mixed into new wood materials, and then processed by extrusion, molding, injection molding and other plastic processing techniques to produce boards or profiles. The traditional process mostly uses a parallel twin-screw extruder to blend and plasticize, and then crushes it through a fan to form crushed material and uses it for the production of profiles. However, this process will cause serious dust to escape, seriously affect production environmental protection, and endanger the health of production personnel. ...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a two-stage mold surface eager cutting device for the problem that the existing technology can only be replaced as a whole and cannot be repaired locally.

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