Product Introduction
Our high-performance purlin forming machine efficiently transforms galvanized or cold-rolled steel strips into precise C and Z-shaped purlins. Equipped with advanced PLC control, this purlin forming machine delivers consistent quality at speeds up to 25m/min, ideal for large-scale construction projects.
Specifications
|
Specification |
Details |
|
Raw Material |
Galvanized/black steel sheet (1.2-3.2mm thickness) |
|
Product Size |
C: 80-300mm web, Z: 120-300mm web |
|
Forming Speed |
15-25m/min (servo motor driven) |
|
Power Supply |
380V/50Hz 3-phase |
|
Accuracy |
±2mm length tolerance |
Features
Intelligent PLC Control
Utilizes a Siemens PLC paired with a touchscreen operator interface. When switching between C-type and Z-type purlin specifications, the system automatically retrieves the corresponding parameters (roll positions, punching spacing, and cutting length). No manual adjustment of mechanical limit stops is required, resulting in a changeover time of ≤10 minutes.
Dual-Channel Functionality
A single set of roll tooling can produce both C-type and Z-type purlins. Switching between types requires only an adjustment to the guide angles of the final few roll stations; there is no need to replace the roll drums, thereby saving on tooling investment costs.
Precision Cutting System
Features a hydraulic flying saw for on-the-fly tracking and cutting. The cutting length tolerance is ±1.5mm, resulting in a flat, burr-free cross-section with minimal end deformation (≤0.3mm) and negligible material waste.
Robust Structure
The Purlin Forming Machine frame is constructed from welded H-beams that have undergone an annealing treatment for stress relief. The forming rolls possess a hardness of HRC 58–62. The entire machine is designed for a service life of 8–10 years and is capable of sustaining 24-hour continuous operation.
Process Flow
Uncoiling
The steel coil is placed onto the uncoiler, where a hydraulic mechanism expands to grip the inner ring, ensuring constant-tension unwinding.
Leveling
The steel strip passes through multiple sets of leveling rollers to eliminate coil-induced stresses and ensure the material enters the forming section in a perfectly flat state.
Servo Punching
Mounting holes (round, oval, or double-sided) are punched into the flat strip at pre-set intervals. An encoder-based closed-loop control system ensures high precision in hole positioning.
Cold Roll Forming
The steel strip sequentially passes through 12–20 roll stations, gradually bending to form the desired C-type or Z-type cross-section. The web height, flange width, and lip angle are controlled via adjustable roll sets. Switching between C-type and Z-type profiles requires only an adjustment to the guide angles of the final few roll stations.
Cut-to-Length
The continuously formed purlin is measured by a length-sensing wheel, and a hydraulic flying saw performs an on-the-fly cut to the specified length. The cutting length tolerance is ±1.5mm, and the cut ends are flat and free of burrs.
Discharge and Stacking
The finished purlins slide down a conveyor rack onto a collection table, where they are subsequently bundled-either manually or automatically-for packaging.
Application Scenarios
Our purlin forming machine is widely used in:
Industrial Construction
Steel framework support for factories, warehouses, and commercial buildings.
Infrastructure Projects
Bridge and overpass structural components.
Residential Development
Light steel villa roof and wall support systems.
Agricultural Facilities
Greenhouse and livestock barn structural framing.
Advantages
Rapid Return on Investment
Based on a daily output of 10 tons of purlins, the equipment investment can typically be recouped within 6–8 months through savings on the cost of purchasing pre-made purlins; subsequent production capacity then translates directly into net profit.
Material Utilization Rate ≥98%
Coiled stock is formed directly, eliminating punching scrap; only minimal head and tail losses occur during coil changes. This saves over 5% in material costs compared to traditional punching methods.
Ready-to-Use; Simple Commissioning
The entire machine undergoes comprehensive linkage testing before leaving the factory. On-site setup requires only connecting power and water supplies and leveling the machine frame; trial production can begin within 2 hours, requiring no complex installation procedures.
Wide Voltage Adaptability
The control system and motors support 380V–440V, 50/60Hz power grids. This makes the equipment suitable for environments with significant voltage fluctuations or for export to various countries, eliminating the need for an external voltage stabilizer.
Maintenance and Care Guidelines
Chip Removal: Use a copper scraper or bamboo strip; strictly avoid striking the rollers with iron tools.
Die Maintenance: The punch and the lower die must be ground or replaced as a matched pair.
Lubrication: Use only the specified lubricant grade; strictly avoid mixing lithium-based and calcium-based greases.
Pneumatic System: Clean the filter element every three months; set the oil mist lubricator to dispense 1–2 drops per minute.
Extended Downtime: If idle for more than 7 days, coat the rollers with rust-preventive oil and wrap them in plastic film.
Fluid & Cabinet Checks: Check the cutting fluid concentration weekly; do not use compressed air to clean the electrical cabinet (use a vacuum cleaner instead).
Precision Maintenance: After changing product specifications, use a feeler gauge to verify all roller gaps; tighten anchor bolts annually to prevent lateral bending.
Safety First: Strictly avoid opening safety guards or covers while the equipment is in operation.
FAQ
Q1: What's the delivery time for a custom-configured machine?
A: Standard models ship in 7-15 days, while custom configurations take 30-45 days depending on requirements.
Q2: Can your engineers provide on-site installation and training?
A: Yes, we provide free on-site installation and operator training within the warranty period, with travel costs covered by the buyer.
Q3: What's the typical lifespan of the cutting blades?
A: With proper maintenance, our Cr12 MOV hardened steel blades can process up to 10,000 tons of material before needing replacement.
Q4: Do you offer spare parts support after the warranty expires?
A: We provide lifetime spare parts supply at cost price, with DHL delivery typically arriving within 5-7 days worldwide.
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