Feeder & Stacker Retrofit Checklist

Can automation be added to an existing line?

A retrofit is a project to assess, not a compatibility promise. A feeder or stacker must fit the incoming material, receiving equipment, production sequence and control system. Start with the bottleneck you want to remove and document the current process before selecting a machine.

Retrofit capability is an established industry offering: ASC describes installation on existing purlin lines. Its statement applies to its own equipment. Our proposed connection must be checked against your drawings and operating conditions.

Which physical interfaces need checking?

Material transfer

Minimum and maximum part sizes, weight, orientation, discharge height and where the part becomes available for pickup.

Installed space

Machine outline plus incoming stacks, full bundles, loading routes, maintenance access and the engineered protective area.

Utilities

Available voltage, frequency, phases and air supply. Compare these with the selected configuration, not a generic catalogue value.

Existing equipment

Drawings or dimensions of conveyors, cutting equipment and the receiving platform. Mark fixed obstacles and any equipment that may be moved.

How do we check the output requirement?

Record actual part arrivals, including short parts and stop/start production. Average metres per minute can hide periods when parts arrive closer together than the handling cycle allows.

For illustration only, a continuously running line at 12 m/min producing 6 m pieces would generate one piece every 30 seconds, ignoring cutting interruptions and gaps. This is not a machine rating. Different cut lengths, multiple pieces per cycle and full-stack removal change the assessment. Use measured arrival intervals for the final design.

What must the control discussion cover?

• Who supplies the signals indicating material ready and space available?
• Which controller permits each transfer to start?
• What happens after an upstream stop, a downstream blockage or loss of utilities?
• How are recipes, counts and product changes communicated?
• Who is responsible for the integrated safeguards and restart procedure?

Have the line builder and qualified integration personnel agree the interface. This checklist is not a wiring instruction or permission to bypass any protective device.

What is often missing from a quotation?

Clarify the responsibility for connection conveyors, support structures, guarding, electrical work, installation, training, travel costs and trial material. Also agree how a finished stack leaves the station. Automating stacking without planning removal can move the bottleneck downstream.

Request an installation window and acceptance method based on your production schedule. The signed scope should identify the drawings, material range and test conditions used for approval.

Is a retrofit just adding one machine?

Sometimes the existing equipment also needs work; define that scope before comparing offers. Siemens separates HMI upgrades, software migration and complete automation-system modernization. These are examples of different project boundaries, not a recommendation to replace your controls. Siemens: migration for automation systems.

Ask for a simple retained/modified/new register. For each conveyor, controller, operator screen and transfer station, identify whether it stays, changes or is added, and who provides the corresponding work. Record unavailable drawings and unsupported legacy equipment as open project questions.

Which records help the supplier assess the existing line?

• As-installed layout: equipment names, material direction, transfer heights and fixed obstructions.
• Production record: actual part arrival times, product lengths and time spent clearing completed stacks.
• Equipment inventory: controller and operator-screen model names, drawing revisions and the existing maintenance contact.
• Project window: available shutdown dates and which production orders must resume first.

These inputs support an integration assessment. The responsible line builder must determine any control changes and approved operating procedures. For a comparable commercial response, carry the register into the quotation checklist.

Connecting an S01 stacker to an existing sandwich-panel line

Define the required motion before planning interfaces: 2.5–12 m single-unit stacking or turnover; over 12 m stacking-only single-unit review; over 12 m turnover with synchronized dual units. A longer-panel request does not establish a machine footprint or capacity.

Trace one panel from cut-off to the finished stack

1. Receiving: mark the upper face, leading end, travel direction, transfer height and point at which the upstream conveyor releases the panel.
2. Handling: show the requested face after placement, available support and fixed obstacles. For dual units, ask the engineering team to specify unit spacing and synchronization; do not choose these from a video.
3. Stack change: identify the support, bundle-removal route and who supplies each conveyor or lifting task. Record what happens to arriving panels during removal.

Assign each interface to an owner

List the existing line builder, stacker supplier and buyer contact beside material-ready, receiving-space, transfer-permission, blockage and restart discussions. Record controller model and drawing revisions. The agreed integration documents define the control interface; this guide supplies no wiring or operating settings.

Measure the busy part of the shift

Collect actual panel arrival intervals for short, typical and long products, including bursts after cutting, interruptions and full-stack clearing. Keep the requested output separate. S04's 20–30 second nominal cycle is not an S01 rating, and the three S01 workshop videos do not establish sustained capacity.

Use the updated S01 input sheet for variants and faces, the long-panel guide for dual-unit questions, and the cost record for retained, modified and supplied items. Confirm installation and training responsibilities through service planning.

Review the S01 product · See receiving, stacking and dual-unit workshop videos

Retrofitting the gantry flipping stacker

For an existing PU sandwich-panel line, provide the actual transfer height, conveyor drawing and space available for the longest panel and finished-stack removal. The S04 outline of approximately 12,000 × 5,600 × 4,500 mm is a machine outline, not an approved installation footprint or clearance drawing.

• Measure panel arrivals at the discharge point, including short-panel batches and cutting pauses; compare them with the cycle-time planning guide.
• Identify who supplies transfer conveyors, completed-stack support, removal equipment and any buffering.
• Assign responsibility for line/stacker control handshakes, stops, restart procedures and commissioning documentation.
• Provide the actual pickup face, profile, film and measured mass for the vacuum suitability review.

See the gantry flipping and stacking machine; obtain a project layout before confirming compatibility. Do not derive installation or safety distances from the brochure outline.

Download the existing-line input forms

Use the original planning forms to record material variants, measured timing, layout references and interface owners. Mark missing inputs TBD; these forms do not record compatibility or engineering approval.

Both files are unchanged. View the download-centre instructions. The web enquiry form does not accept attachments; email only authorised drawings and videos using the contact details below.

Quick retrofit questions