Double layer
roll forming machine
Keep two panel profiles on one machine, using upper and lower forming paths. Share both drawings to discuss the material range, cutting arrangement and production setup.
Two profiles.
One machine layout.
Upper and lower tooling paths accommodate two defined panel sections. The operating sequence determines how you switch between them.
Plan production by profile.
Compare batch sizes and switching frequency with your production schedule. Two separate lines are worth reviewing when both profiles must run independently.
- Profile arrangement
- Two vertically arranged paths
- Production sequence
- Plan around the selected profile
- Intended panels
- Roof and wall profiles, subject to approved drawings
Layer count does not establish simultaneous production or finished output.
Start with both
panel sections.
Specify cover width, rib height, pitch and side lap for each profile. Keep input coil width separate from finished panel widths.
- Effective cover width
- Useful panel width after its side lap is engaged.
- Overall formed width
- Physical width of the finished panel.
- Input coil width
- Flat strip width fed into the forming path.
For thickness, state BMT (base metal) or TCT (total coated thickness), plus material grade and strength where available.
See the working parts.
Inspect the forming rollers, upper and lower panel exits, and the overall arrangement.
Roller tooling
The rollers progressively shape the strip. The chain drive is visible along the forming path.
Panel exit and shear
Upper and lower panel exits.
Overall arrangement
Equipment in the original photograph.
Configuration
starts with your brief.
The profile, material and output target determine the specification. Agree the equipment supplied and site requirements in the quotation.
| Parameter | Unit or format | What to specify |
|---|---|---|
| Upper and lower profiles | Two dimensioned drawings | Cover width, rib height, pitch and side lap for each profile. |
| Material for each path | Steel grade; yield / tensile strength (MPa) if available | Coil material, coating and grade for the upper and lower profiles. |
| Thickness for each path | mm; BMT or TCT | A separate minimum–maximum requirement for each profile. |
| Coil size | mm; metric tonnes | Feed widths, coil diameters and maximum coil mass. |
| Panel lengths | mm or m, by profile | Length range and common order lengths for each product. |
| Output and product mix | m/shift or pieces/shift | Expected quantities for each profile and whether orders overlap. Give hours per shift, common cut lengths and expected coil or profile changes. |
| Profile switching | Batches or changes/shift | Typical batch sizes and how often production changes between profiles. |
| Electrical supply | V / Hz / phase | Available site supply. |
| Working area | m; layout sketch | Space for loading, access to both paths and panel collection. |
Before you choose.
Does double layer mean two panels at the same time?
No. Two paths describe the arrangement. Confirm the selected-path production sequence, feeding and cutting with the proposed configuration.
Can the profiles use different coil specifications?
Specify the material, thickness and feed width for each profile separately. The proposal must address both requirements.
Should I compare two independent lines?
Compare the required production overlap, space and operating sequence. Separate lines may be worth reviewing when both products must run independently.
What affects finished output?
Panel length, material, feeding, cutting and handling affect finished output. A forming speed alone does not describe completed production.
Tell us about both profiles.
Send the drawings or describe the panels. Add material and thickness if available.