Application and maintenance methods of plastic extrusion production line

The plastic extrusion production line consists of a kneading system, a transmission system, and a heating and cooling system. The machine head is composed of an alloy steel inner sleeve and a carbon steel outer sleeve. The internal part of the machine head is equipped with a forming mold. The function of the machine head is to convert the rotating plastic melt into parallel linear motion, uniformly and smoothly introduce it into the mold sleeve, and give the plastic the required forming pressure.

The plastic extrusion production line mold core and sleeve cooperate appropriately to form a circular gap with a continuously decreasing cross-section, allowing the plastic melt to form a continuous and dense tubular coating layer around the core wire. To ensure the correct flow of plastic in the machine head and clean up dead corners where plastic accumulates, a diversion sleeve is generally arranged. To remove pressure fluctuations during plastic extrusion, a pressure equalization ring is also installed on the machine head, which is equipped with mold calibration and adjustment equipment for adjusting and correcting the concentricity of the mold core and mold sleeve. This type of equipment also includes twin-screw extruders, rubber extruders, and plastic pipe units, among others.

Maintenance method for plastic extrusion production line:

1. The plastic extruder equipment should be placed in a ventilated position to determine the heat output of the motor and extend its lifespan; The machine should adhere to outstanding grounding.

2. Regularly check the screws of the cutting tools. After using the new machine for 1 hour, tighten the screws of the moving and fixed tools with something to increase the fixation between the blade and the tool holder; Lubricating oil should be added to the bearings regularly to determine the lubrication between the bearings; To determine the sharpness of the cutting edge of the tool, it is necessary to regularly inspect the tool to determine its sharpness and reduce unnecessary damage to other components caused by blunt or missing blade edges; Regularly check if the belt is loose and tighten it in a timely manner.

3. Restart - Before starting again, the remaining debris in the engine compartment should be removed to reduce engine resistance. The inertia cover and pulley cover should be opened regularly to remove the ash outlet under the flange plate, as the powder discharged from the crusher chamber enters the shaft bearing.

4. Replacement parts - When replacing cutting tools, the distance between the moving and fixed blades is best for crushers with a pressure of 20HP or above, and for crushers with a pressure of 20HP or below. The thinner the recycled material, the larger the gap can be adjusted appropriately.

The classification of twin-screw extruders is based on the diameter of the screw. The thicker the screw of a twin-screw extruder, the larger the amount of product extruded per unit time. Large and medium-sized twin-screw extruders are designed to handle the extrusion production of large and medium-sized plastic products. The planning of the screw is to ensure that the product can be fully plasticized and extruded under pressure. The screw diameter of large and medium-sized twin-screw extruders is easily broken when the pressure exceeds the screw load, so we attach great importance to the screw planning for large and medium-sized twin-screw extruders. In addition to the extrusion production of some small plastic products, we also apply large and medium-sized twin-screw extruders to laboratory experiments. As many new products require repeated experiments to confirm whether their physical properties can be used in actual production, we will conduct experiments on them when manufacturing new products.

When selecting a twin-screw extruder, we need to choose according to the size of the product. In addition, large and medium-sized twin-screw extruders are also used for composite extrusion production with certain types of plastic equipment. Due to the small components of certain products, we require large and medium-sized twin-screw extruders for production.

The plastic extrusion production line plays a crucial role in our daily lives and can also meet the application requirements normally during use. Especially in the production workshop, their use is particularly extensive. Take the PE pipes that are usually used as an example, they are produced by such equipment, as well as plastic sheet production lines, twin-screw sheet extruders, ABS sheet machines, and so on, which have practical standards. In the process of use, they also have practical standards. Such plastic extruders also have single and twin-screw types. The more selective the use.

The plastic extrusion production line has good correctness in design, which is also due to their many advantages in use, which will lead to more practical use of them. It has practical value in different environments. These all demonstrate their high value in use. Such twin-screw sheet extruders are widely used in the production of plastic products and can bring many advantages to practical operations. In terms of their stability, they are good enough to have the advantage of easy application.