Best fit for
- High-rate lines with tight reject windows
- Products that need timed diversion after inspection
- Applications with encoder-based part tracking
- Reject points where confirmation sensing matters
High-speed reject handling
High-Speed Knockoff
Encoder-synchronized reject with product-width targeting
SSI’s High-Speed Knockoff is designed for tight reject windows on high-throughput lines. An SSI-supplied encoder mounts to the conveyor drive shaft and tracks product position by pulse count (distance-based). A fail digital output from upstream equipment triggers the reject event, and operators set product width + offset on the HMI so only the appropriate knockoff fingers activate—directing the specific part onto a speed-matched reject conveyor.
How it works
From reject signal to timed high-speed removal
Use this flow to scope product tracking, reject timing, actuator response, confirmation, and event records for fast-moving lines.
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Detect
Track the product position
Encoder, sensor, or trigger timing locates the target product as it travels toward the reject point.
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Verify
Receive the reject decision
The upstream inspection, scanner, PLC, or operator logic identifies which item must be removed from flow.
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Decide
Calculate the fire window
Line speed, spacing, product weight, actuator response, and confirmation sensors determine the reject timing.
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Reject / log
Knock off the exception
The high-speed mechanism removes the targeted item while guarding, recovery, and downstream handling are scoped around the line.
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Report
Confirm and record rejects
Reject counts, confirmation signals, timestamps, alarms, and PLC or database records are captured when required.
Typical scope
Typical scope
Use these details to frame line constraints, integration needs, and quote inputs before sending parts, samples, or drawings.
- Line speed
- Scoped to conveyor speed, spacing, actuator response, product mass, and reject distance.
- Product spacing
- Requires predictable part tracking through the reject window; encoder-based spacing and timing are reviewed up front.
- Inspection type
- Reject handling is driven by upstream inspection, sensor, or control outputs.
- Reject method
- High-speed timed diversion/knockoff with encoder tracking, pneumatic controls, and confirmation sensors as scoped.
- Data outputs
- Reject counts, confirmation status, faults, misses, jams, and timestamps can be logged.
- PLC/MES integration
- Encoder tracking, PLC I/O, pneumatic controls, fieldbus, alarms, and confirmation sensors are scoped to the line.
- What SSI needs to quote
- Line speed, product size, spacing/photos, trigger source, reject location, reject force/bin, confirmation, controls, alarms, and logging.
Buyer fit
Fit, scope, and quote requirements
Use this section to decide whether a high-speed knockoff station fits the reject timing and part-control problem before selecting actuation and confirmation sensing.
Common applications
- Post-inspection reject handling
- Part diversion from conveyor or chute flow
- High-speed sorting lanes
- Reject confirmation and alarm behavior
What it verifies
- Reject trigger timing and target part position
- Actuation against the correct part window
- Reject confirmation when sensors are included
- Fault, miss, or jam status when configured
Integration requirements
- Upstream pass/fail signal and part tracking method
- Conveyor speed, part spacing, and reject distance
- Air, electrical, PLC, or fieldbus needs
- Guarding, access, and reject bin constraints
What SSI needs to quote
- Line speed, product size, spacing, and photos
- Inspection trigger source and reject location
- Reject force, bin, and confirmation requirements
- Controls, alarm, and logging expectations
Next step
Ready to scope this system?
Send samples, drawings, target line speed, spacing, reject handling, and data requirements so SSI can confirm fit and quote the right High-Speed Knockoff configuration.
- Samples, drawings, or product photos
- Line speed, spacing, and orientation
- Reject handling, logging, and integration needs
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High-Speed Knockoff gallery
