Pre-Processed Strip
This guide separates the real material or manufacturing requirement from standard servo-feeder functions, then identifies the data and validation needed for a reliable line.
What the Evidence Supports
This page separates the real material or manufacturing topic from capabilities that have not been demonstrated for a HENLI servo feeder.
- The original article described 01005 SMD tape handling rather than metal-coil feeding.
- No 200-hole feeder plate, 1000-cycle performance or ±0.01 mm system was evidenced.
- The retained engineering intent is handling pre-processed metal strip in stamping or forming.
Evidence Required for Special Claims
The application name alone does not prove a special machine capability. Treat each claim as project-specific and record the evidence used for quotation and acceptance.
- Machine specification: identify the exact model, component ratings, environmental limits and approved material envelope.
- Performance: state the test material, feed pitch, cycle rate, sample size, measurement method and acceptance tolerance.
- Certification or compatibility: identify the applicable standard, scope, configuration and supporting report instead of relying on a general label.
What the Servo Feeder Controls—and What It Does Not
| Engineering area | Feeder or line action | Boundary |
|---|---|---|
| Strip index | The feeder controls the commanded travel of the carrier strip. | Existing hole-to-hole error is not erased by the feed command. |
| Roll contact | Rolls can be positioned on solid carrier lands when geometry allows. | Contact across weak perforations may deform the pattern. |
| Pilot registration | A die pilot can reference a suitable existing hole or feature. | Pilot entry and feeder release must be coordinated. |
| Tension | Loop and payoff settings can reduce pulling on thin perforated material. | The feeder should not be the only tension-regulating element. |
Application Data to Verify Before Quotation
Use measured production data and material documentation. A feeder model should not be selected from the application name alone.
- Provide strip width, thickness, alloy and temper.
- Provide a drawing of hole size, pitch, rows and solid carrier lands.
- Define which feature is the registration datum for the next process.
- Confirm allowable hole deformation, scratches and roll marks.
- Measure cumulative pitch error over the length that matters to the die.
- Trial pilot entry, release and production speed with the real strip.
Recommended Engineering Workflow
1. Map the pattern
Overlay roll contact, guides and pilots on the strip drawing.
2. Choose the datum
Define whether servo position, a pilot hole or vision controls final registration.
3. Protect the carrier
Set pressure and tension to avoid collapsing perforated zones.
4. Measure accumulation
Check both single-pitch repeatability and long-length pattern error.
Frequently Asked Questions
Does HENLI make an SMT tape feeder?
This page concerns metal strip feeding for stamping or forming, not pick-and-place component tape.
Can an existing hole be used as a pilot?
Yes, if the hole and surrounding material are suitable and the die release sequence is engineered.
Should the feed rolls touch the perforations?
Prefer stable solid lands when possible; the real pattern must be reviewed and tested.
Technical References
These sources support the material, process or component boundary discussed above. They do not certify a HENLI machine unless an HENLI-specific test or certificate is explicitly identified.
Related HENLI Resources
Feed Pitch SelectionSeparate nominal pitch from accumulated pattern error.
NC Servo Feeder ModelsCompare base feeder configurations.
Define the Application Before Selecting a Feeder
Send the material standard and condition, width and thickness range, feed pitch, target strokes per minute, press and die details, surface requirements, line layout and the acceptance method. HENLI can review the standard feeder scope and identify any special engineering that still requires validation.
