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Sheet extruder

The extruder is the main machine of the extrusion molding production line. Its function is to plasticize and transport materials and provide the pressure required for the product. Extrusion molding has the following advantages: the production process is continuous, the production efficiency is high, and the application range is wide. It can produce pipes, rods, plates, cables, special profiles, etc., with small investment and quick harvest. The extruder exists as the main equipment for processing polymers. It has become a series of serialized and standardized mechanical products in many countries and my country's machinery industry. There are many types, their scope of use, and performance indicators are expressed by relevant parameters. Classification of extruders
The classification of extruders is as follows: According to the number of screws, they can be mainly divided into single and twin-screw extruders; according to whether they are vented, they can be divided into vented and non-vented extruders; according to the position of the screws, they can be divided into Divided into vertical and horizontal extruders. Our country's national standard stipulates the same preparation method for China's rubber and plastic molding machinery numbers: category number, composition number, auxiliary number, specification code, design code. The first three codes are the most basic codes. The specific methods are as follows
For plastics , is the extruder, is the screw diameter, and the length-to-diameter ratio is the specification parameter. The standard stipulates that the length-to-diameter ratio of the extruder is, and it does not need to be marked.
It is plastic, it is an extruder, it is a foaming variety, the code is screw diameter, and the length-to-diameter ratio of the screw is.
The extruder is generally composed of several parts such as the extruder head, die, auxiliary machine and so on. The extruder consists of basic screw and barrel transmission devices and heating and cooling.
Sheet extrusion mainly uses a single-screw extruder. The main parameters of a single-screw extruder are:
Screw diameter refers to the outer diameter of the screw, expressed in units, which can characterize the extruder. The size of the extrusion volume is an important parameter of the extruder.
The screw aspect ratio refers to the length of the working part of the screw, that is, the length of the threaded part is technically defined as the ratio of the length from the center line of the feeding port to the end of the thread and the diameter of the screw, represented by /.
The screw speed range refers to the maximum and minimum speed range when the screw rotates, expressed in (rpm), the unit is rpm
The driving motor power of the main screw refers to the motor power that drives the screw to rotate, expressed in (rpm), in units .
Barrel heating power and number of barrel heating sections. Barrel heating power refers to the barrel heating electric power, expressed in units. The number of barrel heating sections refers to the number of heating sections the barrel is divided into, that is, the number of temperature-controlled sections, represented by .
Extruder productivity refers to the production capacity of the extruder per unit time, expressed in units/.
The machine center height refers to the height from the center line of the screw to the ground, expressed in units.
The overall dimensions of the machine refer to the total length, width and height expressed in units.
The mass of the machine is expressed in tons or kilograms.
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