by melinda
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Before ordering a fully automatic C Z purlin roll forming machine, many customers want to know one thing first: how does the whole production process actually work?
A production flow chart makes this easier to understand. From the moment the steel coil enters the machine to the final C and Z purlins coming out, every step and every station has its own role. It also helps customers check the machine configuration, discuss technical details, and prepare for installation before delivery.
This machine is a complete production line. It turns steel coils into C and Z purlins continuously. Multiple stations work together in a fully automated flow.

C Z PURLIN ROLL FORMING MACHINE FULL AUTOMATIC
Application Areas
CZ purlins from this equipment serve many industries:
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Steel structure buildings: roof purlins and wall girts for factories and warehouses
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Solar mounting systems: structural supports for solar power stations
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Storage racking: main beams and uprights for logistics warehouses
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Agricultural greenhouses: framing for vegetable growing and protected cultivation
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Prefabricated buildings: floor joists for modular construction
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Infrastructure projects: bridges, transmission towers, highway barriers, and cable trays

The application of c z purlin

The application of c z purlin 2
Production Flow and Core Components
Would you like to know what each component does on the production line? The flow diagram below gives you a clear picture.
Decoiler→ Feeding and leveler → Pre punching device-----Pre cutter-----Roll Forming Machine→ Post Cutter→Automatic stacker

C Z PURLIN ROLL FORMING MACHINE FULL AUTOMATIC Production Flow Diagram
This diagram shows the complete path from start to finish. Coils go from the decoiler through leveling, pre punching, pre cutting, roll forming, and post cutting, finally reaching the stacker. The whole line runs without interruption. Let us look at each core component and where it fits in the flow.
Decoiler and leveler :The decoiler holds the steel coil and feeds it into the line. The leveling system removes residual stress from the strip to ensure consistent forming later on.

hydraulic decoiler
Pre punching and pre cutting units :The pre punching unit makes holes before forming. The pre cutting unit shears the strip head to help with threading and starting the line.

The stamping part of the c z purlin interchangeable roll forming machine
Main forming machine :The main machine gradually cold forms the strip into C or Z purlins through multiple roller stands. It uses an arch type rack for stability. The drive system runs reliably, and straightening units keep the finished purlin flat and straight.

The display of the c z purlin roll forming machine
Post cutting device :This uses hydraulic cutting with encoder length measurement. The blades can cut different lengths without frequent replacement.

Post cutting device
Hydraulic station :It supplies power for pre punching, pre cutting, and post cutting. The system has a cooling fan to prevent oil overheating. Solenoid valves come from reliable brands.
Electrical control system :A laptop serves as the operation interface. A PLC manages all production parameters. The system supports English and Chinese, and you can enter data through several methods.
Automatic stacker :It receives cut purlins and moves them by motor conveyor to the electromagnet area for automatic stacking.

Automatic stacker
Finished Products and Profile Shapes
After the machine runs stably, product quality is what matters most. Let's look at what a C Z PURLIN ROLL FORMING MACHINE FULL AUTOMATIC actually produces.

The finished product of c purlin

The finished product of z purlin
The C and Z purlins from this machine have smooth surfaces and consistent dimensions with accurate hole positions. Length tolerance is within 300mm-1.0mm, meeting the precision requirements for steel structure installation.

C PURLIN Pattern drawing

Z PURLIN Pattern drawing
The image above shows the section contours of both C and Z profiles. The C shape has lips bent inward, making it suitable for wall girts and edge beams. The Z shape has flanges going in opposite directions, which gives better load performance in lap joints. It is often used for roof purlins and long span structures.
The two profiles switch quickly through 13 interchangeable units. Operators don't need to change rollers. They simply flip the units 180 degrees. This design greatly reduces changeover time. One production line serves both profile types.
Here are the full technical specifications for this equipment.
Technical Specifications
| Component | Item | Specification |
|---|---|---|
| Pre punching and pre cutting units | Punching units | 2 sets |
| Punching needle and die material | Cr12MoV | |
| Punching needle and die hardness | HRC 58-62 | |
| Pre cutting blade material | Cr12MoV | |
| Pre cutting blade hardness | HRC 58-62 | |
| Main forming machine | Forming stands | 18 rolling stands |
| Adjustable flange stand | 1 stand, 87°-95° adjustment | |
| Interchangeable units | 13 sets, flip 180° to switch | |
| Shaft diameter | φ88mm-70mm | |
| Roller material | Cr12 | |
| Roller processing | CNC machining, quenched HRC 58-62, precision lathe finished | |
| Shaft material | 40Cr | |
| Shaft type | Solid shaft | |
| Shaft processing | CNC machining, tempered HRC 28-32, precision lathe finished, electroplated | |
| Machine structure | Arch structure | |
| Transmission | Double chain | |
| Drive motor | Servo motor, 2.2kW | |
| Straightening units | 2 units | |
| Post cutting device | Cutting type | Hydraulic, stepless adjustment |
| Blade material | Cr12MoV | |
| Blade hardness | HRC 58-62 | |
| Length control | Automatic encoder measuring | |
| Length tolerance | 300mm-1.0mm | |
| Hydraulic station | Motor power | 18kW |
| Tank capacity | 800L | |
| Cooling method | Cooling fan | |
| Solenoid valve brand | YUCI-YUKEN / HUADE | |
| Electrical control system | Operation interface | Laptop computer |
| PLC brand | Xinjie | |
| Proximity switch brand | Autonics (Korea) | |
| Counter brand | Omron / Controlway | |
| Language support | English / Chinese | |
| Data input methods | Manual screen entry / USB import / QR code scan transfer | |
| Automatic stacker | Suitable purlin length | Up to 12m |
| Conveying method | Motor conveyor | |
| Stacking method | Electromagnet |
Customization Options
Every fabricator has different needs. The C Z PURLIN ROLL FORMING MACHINE FULL AUTOMATIC flow chart can be customized to match specific requirements. We offer flexible options for forming stands, drive types, punching methods, cutting positions, and automation levels.
The machine works with various materials, including galvanized steel, cold rolled steel, and color coated steel. Roller designs can be adjusted to your commonly used thickness and width ranges. Profile shapes follow your exact drawings.
Questions about the fully automatic C Z purlin roll forming machine flow chart? Need a customized layout for your factory? We are here to help. Send us your profile specifications and production targets. Our engineering team will provide tailored recommendations and a detailed proposal.

The forming part of the c z purlin interchangeable roll forming machine
We look forward to supporting your next purlin production project.
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