Door Frame / Door Leaf Profile Roll Forming Line

1. Definition

A door frame / door leaf profile line cold-forms steel door frames and door-leaf edge sections (Chinese 门框/门版). English names include door frame roll forming machine and door leaf profile machine. Door-leaf edge profiles hang on the same frame family as frames and typically do not need a second dedicated host — whether they share one machine, need roll change, or need cutter change follows the technical proposal.

Recommended baseline on this page is the English door-frame quotation package (about 0–15 m/min, main about 7.5 kW, hydraulic about 5.5 kW, shaft about φ50). Light and heavy same-pack variants exist; publish them side by side, never as one forced public band.

2. Process and applications

Recommended process wording:

1. Decoiling / pay-off
2. Leveling and feeding
3. Punching (hinge holes, lock holes; some layouts use multiple punch groups)
4. Roll forming
5. Hydraulic cut-to-length
6. Exit / stacking

Some market layouts punch then cut blank length before form, or place punch after form — confirm the proposal layout. When frame openings change, spacers are commonly adjusted and matching cutters replaced (examples such as 115 mm and 230 mm).

Applications. Steel door frames, fire/security door frames, and door-leaf edge profiles. Hole layout follows the buyer’s drawings. Not a roller-shutter slat line; not a garage continuous foaming panel line; not a guide / slide / shutter-box line.

3. Reference parameters (keep sources separate)

3.1 Recommended baseline (English door-frame package)

3.2 Same-pack light / heavy variants — do not merge

4. Conflicts and open items

• Multi-tier power — 7.5/5.5 vs 5.5/3 vs 11/5.5 vs ~15-class sheets. Name the quotation; never average.
• Thickness — Point 0.8 mm vs 0.65–1.0 / 1.0–1.5 / 1.5–2.5 bands. Lock after the drawing.
• Speed wording — 0–15 vs notes that already include punch/cut cadence (10–15). Do not read the latter as pure forming speed.
• PLC brand — Delta-class on the recommended package; other sheets may name different brands — contract decides.

5. Boundaries (related machines)

• Roller shutter slat line — Curtain interlocking slats; separate parameter family.
• Guide / slide / shutter-box line — Side rails and hoods; section-tiered power, not frame ratings.
• Garage continuous foaming panel line — Wide insulated garage panels; different process class.
• Octagon tube line — Shutter winding shafts; not a door-frame host.

6. Buyer FAQ

Is a door-leaf (door-plate edge) profile a separate line?

Usually no. Leaf-edge profiles belong to the same frame family and are typically produced on the same class of host. Confirm roll/cutter change needs on the proposal.

Same machine as a shutter slat line?

No. Slats, frames, and guides/boxes are different section families with different speeds and power tiers.

Why do quotes show 5.5 kW and 11 kW for “door frame”?

They are light vs heavier thickness/punch tiers. State target thickness and hole drawings before locking main/hydraulic kW.

Does every frame line include hinge/lock punching?

Punching before form is the common recommended wording, but station count and cylinder layout follow the named proposal.