Extruder having sectional heating function

• Main Author: LI JIABO
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2014
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to an extruder having a sectional heating function. The extruder is characterized by comprising an extrusion cylinder having a screw inside, a first section heating device, a middle section heating device, a last section heating device and a power supply, wherein the first section heating device sleeves the outer portion of the front end of the extrusion cylinder, the middle section heating device sleeves the outer portion on the middle position of the extrusion cylinder, the last section heating device sleeves the outer portion of the terminal end of the extrusion cylinder, the first section heating device, the middle section heating device and the last section heating device are respectively connected with the power supply, the first section heating device is an electric heating device, the middle section heating device is an electric heating device, and the last section heating device is an electric heating device. The extruder has advantages of low apparatus cost, good uniform heatin