1. Material Loading and Pay-Off (Uncoiling)
Process: A large coil of raw material (typically pre-galvanized steel, aluminum, or stainless steel) is mounted onto a decoiler or pay-off reel at the beginning of the production line.
Purpose: This unit holds the material stock and feeds it continuously into the machine. It often includes a braking mechanism to maintain tension and prevent the coil from unraveling uncontrollably.
2. Straightening and Initial Feeding
Process: The metal strip from the coil passes through a leveler or straightening device. This unit consists of a series of rollers that bend the metal back and forth to remove any curls, twists, or imperfections acquired from being wound in a coil.
Purpose: Ensures the strip is perfectly flat before it enters the forming section, which is critical for forming an accurate and consistent profile.
3. Roll Forming (The Core Process)
Process: The straightened flat strip is progressively fed into the roll forming mill. This mill consists of multiple pairs of contoured rollers (stages or stands), arranged in sequence. Each set of rollers incrementally bends the metal strip a little more than the previous set.
Purpose: Through these successive stages, the flat material is gradually and plastically deformed into the precise cross-sectional shape of a DIN rail (e.g., TS35, TS32, etc.) without removing any material. The number of forming stages depends on the complexity of the profile.
4. Punching (Optional but Common for Perforated Rails)
Process: For DIN rails that require mounting holes (perforated rails), a punching unit is integrated into the line. This is typically a hydraulic or servo-driven punch press that moves in sync with the strip. It punches holes at precisely programmed intervals as the formed rail passes through.
Purpose: Automatically adds standardized mounting holes to the rail web, eliminating a secondary manufacturing step.
5. Cutting to Length
Process: Once the full profile is formed, the continuous rail enters the cutting unit. Modern machines use a flying cut-off system. The cutting mechanism (a saw or shear) moves synchronously with the moving rail at the exact same speed, makes a clean, burr-free cut at the programmed length, and then returns to its start position for the next cycle.
Purpose: This synchronized motion allows for precise cutting without stopping the continuous flow of material, ensuring high production efficiency and clean, square cuts.
6. Output and Collection
Process: The finished, cut-to-length DIN rails exit the machine onto a run-out table or a stacking rack. This output conveyor may include guides or sensors to neatly organize the rails for easy collection, packaging, and palletizing.
Purpose: Provides a controlled area for the finished products to be gathered without being damaged.
Tianjin Putai Technology