CZ Purlin Roll Forming Machine Guide

This machine with its wordy name is an indispensable piece of equipment for the manufacture of roof and steel frame structures. The term 'purlin' refers to the roof elements that extend parallel to the ridge beam. They act as a support to the wall panels and roof sheets. Supported by walls or beams, the C-shape purlins, and Z-shape purlins are used between spans for flexural continuity. These elements are typically made of steel (or steel-based alloys).
 

What is a CZ Purlin Roll Forming Machine?

A CZ purlin machine is capable of forming a C-shape, and Z-shape purlins of various sizes. The C-shape generally refers to the purlins with a cross-section that resembles the letter C. C purlins are also sometimes called U purlins. Z purlins have a Z-shape cross-section accordingly.


Fig. Z purlin & C Purlin


What's worth noting is that you can have your manufacturer customize the section designation based on your requirement as well. For example, you can have the purlins made with flanges, stiffeners, etc. In the industry of steel building construction, secondary elements such as grits (i.e., wall) and purlins (i.e., roof) are normally cold-formed steel sections.
 

Configuration

CZ purlin roll forming machines always incorporate duplex roll forming mills. They are driven mechanically by gearboxes. Just like most sheet metal forming lines, the machines consist of a feeding and leveling device, a decoiler, a punching system, a pre-shear, a roll forming system, hydraulic post cutting, a runout table, a hydraulic station, and a PLC system.
 

Features

The dimension of a CZ purlin machine is adjustable e so that it can form different cross-sections with a particular specification. For example, it can easily switch from C forming o Z forming by simply switching the die-set. The same mechanism applies to alter the widths and heights of the purlins. In general, this type of machine is able to form C shapes and Z shapes measuring 80-450 mm, as well as the thickness of up to 5 mm.


Fully Automatic CZ Forming Machine, Novotek Machinery

 

Advantages

In addition to the easy dimension change, a linear-guideway production line also has the ability to produce standard products with superb strength, no open mouth on final products, and quick interchangeability between C-shapes and Z-shapes. What's more, changing the setups only takes about 5 to 15 minutes. 

As opposed to other roll forming machines, CZ forming machines can change size automatically and are labor-saving and time-saving.  Since it is a full-auto process, it does not require highly skilled operators. Also, automation ensures stable and precise results. In large-scale construction, the forming machines with a larger web size are more frequently used.
 

Applications of CZ Purlin Roll Forming Machines

Though CZ purlin roll forming machines are mostly used for steel construction projects, their use actually covers a wider range of industries aside from the construction industry, such as aviation.
 

Construction and Building

They are most popular in the construction and building industry. The key applications include purlin forming, hollow elevator guide rails, handrails, doors and windows, roof and decking, cable trays and ladders, and scaffoldings. There are many improved models that are specifically designed to accommodate the construction requirement, ensuring smooth and high-precision workflow.
 

Aviation

In the aviation industry, it is used to make stiffeners for the fuselage, seat rails, and many other components of an aircraft. CZ roll forming machines are also used in automotive industries where many parts are made of steel, such as the seat rails of a vehicle, car door frames, trims, heat exchanger radiator tubes, exhaust pipes, crash tubes, and bumper reinforcements.

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