Executive summary Our slit coil line runs a tilter, a strapping line that bands small coils one after another, a wrapping station for surface protection, and a robot that stacks paper-wrapped coils onto pallets. For a smooth flow every station has to keep pace with the slitter, so we balance the stations before building the line.
Table of Contents
- What the machine does
- Station flow
- Balancing the stations
- What we set per line
- Selection checklist
- Safety
- Engineering FAQ
- Next step
- Related reading
- Sources
What the machine does
The automated slit coil line runs four handling and protection steps in one synchronized sequence:
- Tilting: A tilter receives slit coils in eye-to-wall orientation at the slitter exit and reorients each one onto the powered roller conveyor, so the narrow strip never has to be manhandled.
- Radial strapping: The strapping head feeds strap through the center bore, tensions and seals it, and the indexing table places the programmed number of radial straps per coil.
- Wrapping: An orbital ring passes paper or film through the core and round the coil, protecting the strip against moisture and transport abrasion.
- Robotic palletizing: An industrial robot picks each wrapped coil from the roller deck and positions it on a wooden pallet to the programmed stack pattern, ready for fork-truck extraction.
Station flow
| Station | Job | Paces to |
|---|---|---|
| Tilter | Turns the coil | Slitter output |
| Strapping | Bands each coil | Coils per cut |
| Wrapping | Paper or film cover | Layers needed |
| Robot stacking | Builds pallet stacks | Stack pattern |
1. Tilter Station
The tilter is the gateway between the slitting arbor and the packaging cells. Coils leave the shear in batches on an exit turnstile; the tilter receives, tilts and discharges them one by one without surface scratching. It paces to the slitter discharge cycle, so the slitting machine never halts on downstream congestion.
2. Strapping Station
The strapping station applies radial binding round each narrow coil. Its cycle time is governed by the coils generated per cut and the number of straps per coil. The indexing table rotates the coil while the strap track feeds, tensions, cuts and seals automatically.
3. Wrapping Station
The wrapping station applies a snug layer of paper or film round the coil profile. Its pace is set by the required overlap and layer count. Wrapping shields precision-ground edges from gouging and keeps a sealed barrier against moisture between the windings.
4. Robot Stacking Station
The robot builds structured pallet loads. Its pace is governed by coil weight, travel distance, pallet configuration and timber spacers between tiers. Full pallets index out to the pickup bay, so the robot never waits on manual handling.
Balancing the stations
Line capacity is set by whichever station has the longest cycle time per coil. If any downstream station takes longer than the slitter discharge interval, coils queue and the slitter pauses.
Worked example (illustrative).
| Item | Value |
|---|---|
| Slitter output (illustrative) | 90 coils per hour |
| Time per coil at line pace, 3,600 ÷ 90 | 40 s |
| Strapping cycle (illustrative) | 35 s |
| Robot stacking cycle (illustrative) | 30 s |
| Slowest station, 35 s, below 40 s | line keeps pace |
- The strapping station takes 35 s per coil to index, feed and seal.
- The robot takes 30 s per coil to pick, travel and seat the coil.
- The wrapping cycle stays within the threshold via ring speed or parallel configuration.
Because the slowest station (strapping, 35 s) sits below the 40 s target, the line keeps pace with a 5-second margin for transfer delays. Every station cycle must stay below the time per coil at slitter pace; the slowest station sets the line rate.
What we set per line
| Setting | Depends on |
|---|---|
| Tilter | Coil weight |
| Strapping | Straps per coil |
| Wrapping | Paper or film |
| Robot | Payload and stack pattern |
Drive sizing, strap program, ring speed and overlap, and the robot’s gripper and trajectory are each engineered to the coil range, wrap media and stack pattern of the project.
Selection checklist
To configure an automated slit coil packaging line that matches your specific mill or service center requirements, verify the following mechanical and production parameters:
- Coil OD, ID, width and weight, smallest to largest.
- Coils per slitting cut and target coils per hour.
- Straps per coil, strap material and seal type.
- Wrapping material and layer count.
- Stack pattern, pallet size and dunnage.
- Floor space, buffering and utilities.
Safety
- Keep clear of the upender, strapping head and wrapping ring while they move.
- Stay outside the fenced stacking area; robot cells run behind interlocked perimeter guarding.
- Lock out before clearing a jam or changing heads.
- For CE markets, the machine is designed to ISO 12100 and EN 415-10.
Engineering FAQ
Q: What is the station flow? A: Tilter, strapping line, wrapping station, then robot stacking on pallets.
Q: How do you balance the line? A: Every station cycle must be shorter than the time per coil at slitter pace; the slitter output in coils per hour sets that baseline.
Q: What if one station is too slow? A: We add a second head, a parallel wrapping orbit, or a buffer conveyor between stations.
Q: Why paper wrapping? A: Paper stops metal-to-metal rubbing and scratches in pallet handling and transport; VCI paper also inhibits rust on bare edges.
Q: Robot or gantry? A: A robot suits flexible stack patterns; a gantry suits heavier coils on a fixed grid.
Q: Which standards apply? A: For CE markets, ISO 12100 and EN 415-10.
Next step
We match a slit coil packing line in three steps:
- Submit your layout drawing with coil sizes, slitter output and pallet pattern, to info@fhopepack.com.
- Receive a proposal within 48 hours with the machine data and layout.
- Book a site survey so we confirm the slitter exit, floor loading and connection points.
Related reading
- Slit Coil Upending, Wrapping and Stacking Line With Buffers
- Long Roll Film Sleeving and Robot Palletizing Line
- Narrow Coil Strapping, Wrapping and Gantry Stacking Line
- Slit coil packing line
Sources
- Machine content: FHOPE engineering team, 2026-10-10
- Machine in action: the video on YouTube
- Station balance: our worked example, illustrative values
- Standards scope: ISO 12100:2010; EN 415-10:2014
- Proposal timing: approved house CTA (proposal within 48 hours)
Last reviewed: 2026-10-29
