A plastic pipe extrusion line consists of different parts. An extruder converts raw plastic material into a continuous tubular melt by extrusion through an annular die. The molten pipe then proceeds through a sizing or calibration bench (which adjust its dimensions) to a cooling tank. After being cooled, the pipe passes via a haul-off to the cutting machine, for cutting it into final lengths, or coiling.
Plastic that has been compacted, melted, and homogenized through mixing, with subsequent materials pushed towards the die head through screws. The extrusion die head is a crucial component for pipe forming.
Adopting our company's independently developed cooling and sizing system, a specially designed stainless steel box with an extended vacuum sizing box, coupled with circulating water spray cooling, can ensure stable diameter size and roundness. The use of speed control system ensures stable traction speed. And the vacuum sizing water tank is equipped with a forward and backward movement device and a manual device for adjusting left and right, height and height
After being controlled by a travel switch according to the required length, automatic cutting is carried out, and the frame is flipped with a delay to implement flow production. The cutting machine completes the entire cutting process with the fixed length switch signal as the command, and is synchronized with the pipe operation during the cutting process. The cutting process is completed by electric and pneumatic drives.
The turnover action is controlled by the air cylinder through the air circuit. The turnover installation is equipped with a limit device. When the cutting saw cuts the pipe, the pipe continues to be transported. After a delay, the cylinder enters work to achieve the turnover action and achieve the unloading purpose. After unloading, it will automatically reset after a delay of several seconds, waiting for the next cycle.
The raw plastic materials such as beads, granules, pellets, or powder are loaded into a hopper and then fed into a long heated cylindrical chamber called an extruder. The plastic materials melted down is moved through this extruder by a spinning bolt. It is important to note that some extruders can have either one or two spinning bolts.
The melted raw materials flow from the hopper down through the feed throat and onto a large spinning screw operating within a horizontal barrel of the mini single screw extrusion machine. Within the horizontal barrel, the melted raw materials are filtered to ensure a uniform consistency.
The properties of plastic materials vary depending on the materials there are made of. However, the raw materials are processed by subjecting it to heating at a particular temperature with respect to the type of raw material being passed through. At the completion of the process, the molten plastic is pushed through a small opening called a die. This allows the material to size or shape to the desired finished product.
The die-cut for a particular plastic profile is designed to aid smooth and even flow from the cylindrical profile of the extruder into the final profile shape. Consistency in the plastic flow is crucial in achieving an end product with high quality and reliability.
As the plastic is extruded from the die, it is fed onto a conveyor belt for cooling. The finished product can be cooled either by air or water. Note, this process is similar to the injection molding process except that the melted plastic is forced through a die instead of into a mold.
Zhaojiadian Village, Jiaoxi Sub District Office, Jiaozhou City, Qingdao City, Shandong Province ,China
