Granulator head

The extruder is divided into angled heads (with an angle of 120 degrees) and right angled heads according to the direction of the material flow at the head and the centerline of the screw. The outer shell of the machine head is fixed to the body with bolts, and the mold inside the machine head has a core seat, which is fixed to the wire inlet port of the machine head with a nut. The front of the core seat is equipped with a core, and the center of the core and the core seat has a hole for passing the core wire; A pressure equalization ring is installed at the front of the machine head to balance the pressure; The extrusion molding part consists of a mold sleeve seat and a mold sleeve. The position of the mold sleeve can be adjusted by bolts through support to adjust the relative position of the mold sleeve to the mold core, facilitating the uniformity of the extrusion layer thickness. The outside of the machine head is equipped with heating and temperature measuring devices.
In order to reflect the extrusion situation of the extruder head, it is necessary to detect the pressure of the extruder head during extrusion. As domestic extruders do not have a pressure sensor for the extruder head, the measurement of the thrust after screw extrusion is generally used instead of the measurement of the extruder head pressure. The screw load gauge (ammeter or voltmeter) can accurately reflect the magnitude of the extrusion pressure. The fluctuation of extrusion pressure is also one of the important factors causing unstable extrusion quality. The fluctuation of extrusion pressure is closely related to factors such as extrusion temperature, the use of cooling devices, and the length of continuous operation time. When abnormal phenomena occur, those that can be eliminated quickly should be eliminated, and those that must reorganize production should be stopped decisively. This can not only avoid an increase in waste, but also prevent accidents from happening. By measuring the pressure gauge reading, the pressure state of the plastic during extrusion can be determined, and the maximum thrust value is usually used for alarm control.