Buyer's Guide: Steel Coil Wrapping and Downender Stacking

Name: Buyer’s Guide: Integrating Stretch Wrapping and Downender Stacking for Heavy Steel Coils
Uploaded: 2026-09-14T08:19:41+00:00
Duration: 1 min 46 s
Description: > **Executive summary** > This buyer's guide covers integrating a steel coil stretch wrapper with a downender (upender) and a stacker, where the coil must fit every station. Our FPCA-1000 wrapper takes coils up to **2,000 kg**, while our turntable stacker line handles up to **5,000 kg**. The slowest station…

خلاصه اجرایی This buyer’s guide covers integrating a steel coil stretch wrapper with a downender (upender) and a stacker, where the coil must fit every station. Our FPCA-1000 wrapper takes coils up to کیلوگرم ۷۳۰۰, while our turntable stacker line handles up to کیلوگرم ۷۳۰۰. The slowest station sets the line rate, and an upender turns a coil 90 degrees in around 50 s.

کاری که خط انجام می‌دهد

In our demonstration video, slit steel coils lie flat on a powered roller conveyor and pass through our ring stretch wrapper. The ring carries transparent film through the coil eye and around the coil section while the conveyor indexes the coil. Further along the line, a gantry stacking unit stands over the conveyor, where a coil sits on a pallet.

The coils in this line already lie flat, so no turning step is needed between wrapping and stacking. Where coils arrive eye-horizontal from the slitter or recoiler, a downender turns them 90 degrees first. The sections below show how we size each station so the coil passes the whole line.

Online coil upender with roller table on a V saddle platform for turning steel coils 90 degrees in a packing line — **Online coil upender with conveyor.** Roller tables on the platform receive and deliver coils in the line.

Matching the coil window across stations

Each station has its own coil window. The line can only run coils that fit all of them:

پارامتر	FPCA-1000 wrapper	Turntable stacker line	Common window
کویل ID	508 یا 610 میلی متر	۶۰ میلی‌متر	۶۰ میلی‌متر
سیم پیچ OD	700-1,600 میلی متر	750-1,400 میلی متر	750-1,400 میلی متر
وزن کویل	100،2,000-XNUMX،XNUMX کیلوگرم	80،5,000-XNUMX،XNUMX کیلوگرم	100،2,000-XNUMX،XNUMX کیلوگرم
عرض سیم پیچ	20-400 میلی متر	در پیشنهاد تأیید شد	20-400 میلی متر

Illustrative example: a 1,500 kg slit coil with 508 mm ID and 1,200 mm OD fits every station. A 3,500 kg coil fits the stacker line but exceeds the FPCA-1000 range, so the wrapper must be sized up. The FPCA-1000 can be customized for other coil sizes, and we fix the window in the proposal.

Where the downender fits

A downender, which we also call an upender or tilter, turns a coil between eye-horizontal and eye-vertical. We place it where the coil orientation changes, for example between a recoiler and a flat stacking station.

پارامتر	FPCT-03	FPCT-05	FPCT-10	FPCT-20
حداکثر بارگذاری	3 T	5 T	10 T	20 T
قدرت	1.3 کیلو وات	2.0 کیلو وات	4.5 کیلو وات	7.8 کیلو وات
زمان چرخش	50–90 ثانیه	50–90 ثانیه	60–90 ثانیه	60–100 ثانیه

For an inline line we use the online upender with conveyor. Roller tables on the platform receive and deliver coils, photoeyes control it automatically, and it tilts a coil 90 degrees in around 50 s. Nylon panels on the V saddle reduce scratching. The machine can stop at any angle, and two displacement limiters and a position lock guard the turn.

Station cycle times

The slowest station sets the line rate. One hour has 3,600 s:

ایستگاه	چرخه	سقف
Online upender	around 50 s	3,600 ÷ 50 = 72 coils per hour
FPCT upender	50–90 ثانیه	40-72 کویل در ساعت
PET strapper (stacker line)	15 بازدید کنندگان	3,600 ÷ 15 = 240 coils per hour
FPCA-1000 wrapper	depends on coil size and overlap	confirmed on a trial

In this example the upender, not the strapper, limits the line at 72 coils per hour or fewer. Transfer and centring time between stations adds to each cycle, so the real rate is lower. The wrapper cycle depends on coil width and the overlap setting of 20–90%, so we time it on your coils and then balance the line.

Cross arm and turntable

Our turntable stacker line has two separate handling units. The cross arm rotates automatically and is rated 10 t per arm, 40 t in total. The stacking machine places coils onto pallets on a 6-station turntable, so while one pallet is filled, the next station moves into position.

Check the cross arm against your heaviest load per arm. By weight alone, 1,500 kg coils allow 6 coils per arm: 6 × 1.5 t = 9 t, inside the 10 t rating. On the turntable, stack height and coil stability limit each pallet, so we confirm the stacking pattern for your coils in the layout.

قفل های ایمنی

The FPCA-1000 uses an interlocking system wired to the master PLC. The ring and rotary arm cannot start if a safety perimeter is breached. Steel mesh fencing guards the cell, gates use solenoid interlocks, and the emergency stop responds in under 500 ms with a global line stop that includes conveyors and rings.

استانداردهایی که اعمال می‌شوند به بازار مقصد بستگی دارند. برای بازارهای CE، استاندارد ISO 12100 روش ارزیابی ریسک و استاندارد EN 415-10 الزامات عمومی برای ماشین‌آلات بسته‌بندی را تعیین می‌کند.

Selection checklist for a wrapping and stacking line

قطر داخلی، قطر داخلی، عرض و وزن کویل، کوچکترین و بزرگترین.
Coil orientation at the line entry: eye-horizontal or eye-vertical.
Coils per hour, for each station.
Wrapping material and overlap target.
Stacking pattern and pallet size.
Interlock connection to your upstream line.

سوالات متداول مهندسی

Q: How heavy a coil can the line handle? A: The FPCA-1000 wrapper takes 100–2,000 kg, and the turntable stacker line takes 80–5,000 kg. Heavier coils need a larger wrapper, which we customize.

Q: When do I need a downender? A: When coils change orientation, for example from eye-horizontal at a recoiler to flat for stacking. Our online upender turns a coil 90 degrees in around 50 s.

Q: Which station limits the line rate? A: Usually the slowest turning or wrapping step. An upender at around 50 s caps the line at 72 coils per hour, while the PET strapper cycles in 15 s.

Q: How much load does the cross arm take? A: 10 t per arm, 40 t in total. By weight, that is 6 coils of 1,500 kg per arm. Pallet stack height on the turntable is confirmed in the layout.

Q: What happens if a guard gate opens? A: The PLC interlock stops the ring, rotary arm and conveyors, and the emergency stop responds in under 500 ms.

مرحله بعدی

We plan your wrapping and stacking line in three steps:

طرح چیدمان خود را ارسال کنید with coil sizes, weights and coils per hour to info@fhopepack.com.
دریافت پیشنهاد ظرف ۴۸ ساعت, with the stations, cycle balance and coil window.
رزرو نظرسنجی در سایت برای اینکه خط با گیاه شما متناسب باشد.