The Fully Automatic Film Cutting And Precision Attaching Machine on this site is described in one line: production of special flexible displays by rolling and pasting, built as a customization for one named display maker. Its parameter block carries no voltage, no drive list, no I/O map. That is normal for a custom machine, and it is exactly why the electrical and control brief has to be written by the buyer rather than copied from a catalogue.
For a cell that both cuts a film and sticks it somewhere precise, the electrical spec is not a detail attached to the mechanical design. It is the part that decides whether the alignment you asked for can actually be held at speed, whether a film changeover takes eight minutes or an hour, and whether your maintenance electrician can find the fault at two in the morning.
Start from what the cell has to do, not from a control brand
Write one sentence the shift supervisor would recognise: which film, which web width, which feed direction, which target surface, which line, which shift. Then state the four numbers that move the whole electrical design:
- The web or roll size the film arrives on, and whether it is unwound, carried, cut, and transferred inside this one cell.
- The cut you need as a finished part, plus the tolerance an inspector can verify with a gauge or a calibrated viewer.
- The placement you need on the target surface, and what counts as a defect on your own part.
- The takt you need, stated with its contents: cycle time, changeover time, and whether the changeover is inside the takt or outside it.
Neighbouring machines on the same product list show how differently this can be framed. The Automatic Alignment Large-Size Curved Surface Lamination Machine page names a dedicated arc-shaped bonding mechanism together with CCD automatic alignment correction and roller bonding. The Semi Automatic Roller Bonding Equipment page names CCD vision plus a UVW platform as its alignment method and lists the applicable film and product sizes. Those are published descriptions for those pages only. Use them as a vocabulary, not as a spec you expect on your own machine.
Electrical supply: state the boundary you are handing over
The supplier needs the incoming supply as measured at the panel you will feed from, not as remembered from a nameplate. Give them:
- Phase, voltage and frequency available at the position, and the fuse or breaker rating already installed.
- The total connected load you are willing to allocate to the cell, and whether a spare circuit exists or a new one has to be pulled.
- Earthing and bonding arrangement at that position, and any equipotential requirement for the frame the film is placed onto.
- Where the machine stops and your installation begins: which side of which isolator is theirs.
Ask for the machine's own power connection requirement in writing, with the connection point, the recommended protective device, and the inrush behaviour of the drives and heaters. A cell that rolls, unwinds and bonds has motors, a wound-web brake or torque control, and possibly a heated or temperature-controlled station. Those loads are not the same as a resistive heater and they change the circuit you provision.
Motion and alignment: name the axes you are paying for
For this kind of cell the control bill of materials is really a list of things that must be moved and things that must be measured:
- Unwind and rewind: diameter measurement, tension, and how the web is held at stop and at thread-in.
- Web advance and the cut: registration against the printed or cut edge, and the trim or waste rule.
- Placement: the axes that carry the film to the target, and what closes the loop on placement error.
- Vision or sensing, if the machine uses it: what it measures, what it rejects, and what it merely records.
- Any vacuum, roller, nip or thermal station: how interlocked, how controlled, and what proves it completed.
On the pages above, alignment is described as CCD-based, and one page adds a UVW platform. If you need a closed loop, say what the feedback device is and where the accuracy is proven on your part across a run, not on a first-article demo.
Safety functions and machine state
List the hazards a cutter, a nip and a moving web create at your line, and how the machine is expected to respond to each. Then require:
- Guard interlocks, emergency stop coverage, restart behaviour after a stop, and who is allowed to bypass what.
- Pinch and crush protection at the nip, web-break detection, and jam clearing that does not need an entry into the guarded zone.
- A stated machine-state model: the modes an operator can select, and what each mode permits.
Ask the supplier which standard the safety functions are designed to, and require the risk assessment and the safety-related wiring to be delivered as documents, not as a claim in a quotation.
Controls architecture and how it connects to your line
The custom-solutions page on this site lists PLC control, HMI, motion control, sensor integration, electrical cabinet design and safety control as part of what an integrated engineering team delivers, and lists electrical control system design as one of the steps in a customization project. So the integration questions belong in your brief:
- Controller platform and programming environment, and whether you are allowed to hold and edit the program after acceptance.
- The industrial network your line uses, the protocol the machine speaks, and the exact handshake signals in both directions.
- Upstream and downstream equipment it has to talk to, and what happens on a line stop, a starved feed, or a blocked discharge.
- Remote access: whether it exists, who holds the credentials, and what is logged.
Do not let the machine be delivered as a black box inside an enclosure you cannot service. Ask for the spare-parts list with the orderable part numbers, the version of each program, and a restore procedure.
Recipes, changeover, and data you can act on
Film changeover is where a cutting and attaching cell earns or loses its capacity. Specify:
- The number of recipes you need, what a recipe actually contains, and who can create or edit one.
- A changeover path an operator can follow from the screen, with the timed steps measured at your plant.
- Per-cycle or per-lot records: placement result, defect class, machine state, and how long they are retained.
- Fault reporting that names the station and the cause on the HMI, so the line record does not become a guess.
If you want a defect to stop the line rather than reach the next station, say so explicitly and ask how the machine proves it stopped.
Documentation and acceptance, before the purchase order
Ask for these items by name in the quotation, and make them conditions of acceptance:
- Electrical drawings, panel layout, terminal schedule, and the bill of materials with brands and part numbers.
- The I/O list with every signal, its address, and its purpose, matched to the line handshake you specified.
- The operator and maintenance manuals for the exact delivered program, plus the backup and restore routine.
- A factory run on your film and your target part, with placement and defect numbers you recorded yourself, followed by the same checks repeated on a second batch.
One last thing worth settling in writing: who commission the machine on your floor, how long the site work is expected to take, and what training your electricians and technicians receive. If you would rather the cell be engineered around your line than adapted to it after delivery, the customization and engineering-services route is the place to open that conversation, with the four numbers, the supply boundary, and the acceptance checks already written down.
