EVA automotive interior sheet extruder machinery factory

Automotive Interior Sheet Extruder Machinery Factory
Transmission System The function of the transmission system is to drive the screw to supply the torque and speed required by the screw during the extrusion process. It is usually composed of a motor, a speed reducer and a bearing. .
On the premise that the structure is basically the same, the manufacturing cost of the reducer is roughly proportional to its overall size and weight. Because the large shape and weight of the reducer means that more materials are consumed during manufacturing, and the bearings used also increase the manufacturing cost.
Car Interior Sheet Extruder |
Car Interior Sheet Extruder Machinery Factory
The extruder with the same screw diameter is faster and more efficient than the conventional extruder. When the energy consumed is doubled, the motor power is doubled, and the frame size of the reducer must be increased accordingly. But high screw speed means low reduction ratio. Compared with a reducer of the same size with a low reduction ratio and a large reduction ratio, the gear module increases and the load bearing capacity of the reducer also increases. Therefore, the increase in volume and weight of the reducer is not linearly proportional to the increase in motor power. If you use the extrusion volume as the denominator and divide it by the weight of the reducer, the number of high-speed and efficient extruders will be smaller than that of ordinary extruders.
In terms of unit output, the small motor power of the high-speed and high-efficiency extruder and the small weight of the reducer mean that the machine manufacturing cost per unit output of the high-speed and high-efficiency extruder is lower than that of ordinary extruders.
Automotive Interior Sheet Extruder |
Automotive Interior Sheet Extruder Machinery Factory
Heating and Cooling Device
Heating and cooling are necessary for the plastic extrusion process to proceed. condition.
⑴Extruders usually use electric heating, which is divided into resistance heating and induction heating. Heating sheets are installed in various parts of the fuselage, machine neck, and machine head. The heating device heats the plastic in the external heating cylinder to reach the temperature required for process operations.
⑵ The cooling device is set up to ensure that the plastic is within the temperature range required by the process. Specifically, it is to eliminate the excess heat generated by the shear friction of the screw rotation to avoid excessive temperature that makes the plastic decompose, scorch, or difficult to shape. Barrel cooling is divided into two types: water cooling and air cooling. Generally, air cooling is more suitable for small and medium-sized extruders. For large-scale extruders, water cooling or a combination of two forms of cooling are mostly used. Screw cooling mainly uses central water cooling. The purpose is to increase the solid material delivery rate and stabilize the glue output. At the same time, the quality of the product is improved, but the cooling at the hopper is firstly to strengthen the transportation of solid materials and prevent the plastic particles from becoming sticky due to temperature rise and blocking the material opening; secondly, it is to ensure the normal operation of the transmission part