Hey there! I'm a supplier of Purlin Forming Machines, and today I wanna talk about one of the most crucial parts of these machines - the cutting system.
First off, let's understand what a purlin is. Purlins are horizontal beams used in construction, especially in roofing and wall structures. They provide support to the roof covering or wall panels, distributing the load evenly. A Purlin Forming Machine is designed to transform flat metal sheets into purlins of various shapes and sizes, like C - purlins, Z - purlins, etc. And the cutting system is the key to getting these purlins in the right length.
There are mainly two types of cutting systems in Purlin Forming Machines: hydraulic cutting and servo - controlled cutting.
Hydraulic Cutting System
The hydraulic cutting system is a classic choice in many Purlin Forming Machines. It works based on the principle of hydraulic pressure. In this system, a hydraulic cylinder is used to drive the cutting blade. When the metal sheet reaches the pre - set length, a signal is sent to the hydraulic system. The hydraulic pump then generates high - pressure oil, which is directed into the hydraulic cylinder. The piston in the cylinder moves, pushing the cutting blade down onto the metal sheet with great force, cutting it cleanly.
One of the big advantages of the hydraulic cutting system is its power. It can handle thick and high - strength metal sheets with ease. For example, if you're working with steel sheets that are 3 - 5mm thick, the hydraulic cutting system can make a smooth cut without much hassle. It's also relatively simple in design, which means it's easy to maintain. If there's a problem, the components are easy to access and replace.
However, it also has some drawbacks. The cutting speed of a hydraulic cutting system is usually limited. Since it relies on the flow and pressure of hydraulic oil, the process of building up pressure and retracting the blade takes a bit of time. This can slow down the overall production speed of the Purlin Forming Machine, especially when you need to produce a large number of purlins in a short time.
Servo - Controlled Cutting System
The servo - controlled cutting system is a more modern and advanced option. It uses a servo motor to control the movement of the cutting blade. The servo motor is precisely controlled by a computerized control system. When the metal sheet moves through the forming machine and reaches the desired length, the control system sends a signal to the servo motor. The motor then drives the cutting blade to make a quick and accurate cut.
The biggest advantage of the servo - controlled cutting system is its high precision. It can cut the metal sheets with an accuracy of up to ±0.5mm. This is extremely important when you need to produce purlins with very strict length requirements. For example, in some high - end building projects, the purlins need to fit perfectly into the structure, and the servo - controlled cutting system can ensure that. It also has a much higher cutting speed compared to the hydraulic cutting system. The servo motor can respond quickly to the control signals, making the cutting process almost instantaneous.
But the servo - controlled cutting system also has its cons. It's more complex and expensive. The servo motor and the control system are high - tech components, and their cost is relatively high. Also, if there's a problem with the control system or the servo motor, it may require more technical expertise to repair.

When choosing a Purlin Forming Machine, you need to consider your specific needs. If you're dealing with thick metal sheets and don't need extremely high precision or very high production speed, a hydraulic cutting system might be a good choice. On the other hand, if you're working on high - end projects that demand high precision and fast production, the servo - controlled cutting system is probably what you need.
Now, let me tell you a bit about our company's Purlin Forming Machines. We offer both types of cutting systems in our machines, so you can choose according to your requirements. Our machines are built with high - quality materials and advanced technology, ensuring reliable performance and long - term use.
If you're also interested in other types of roll - forming machines, we have a wide range of options. For example, we have Roofing Sheet Making Machine, which can produce various types of roofing sheets. The Roof Panel Roll Forming Machine is great for making roof panels with different profiles. Our Roof Roll Forming Machine can create iron roof tiles efficiently. And if you need a more flexible option, the Portable Metal Roof Roll Forming Machine is a good choice. We also have Metal Rollformer for other metal forming needs.
If you're thinking about purchasing a Purlin Forming Machine or any of our other roll - forming machines, don't hesitate to get in touch with us. We can provide you with detailed product information, technical support, and competitive prices. Let's have a chat about how we can meet your production needs.




