Best fit for
- Moderate-speed reject or sort points
- Simple pass/fail diversion after inspection
- Lines that need serviceable, straightforward mechanics
- Applications where part spacing and timing are manageable
Standard reject handling
Standard Knockoff
Sensor-timed reject for moderate-speed lines
SSI’s Standard Knockoff is a simple, reliable reject mechanism for moderate-speed conveyors. An upstream system asserts a fail digital output. The knockoff queues fail events and waits for the product to reach a trigger sensor at the reject point—then actuates the reject. Extend/retract confirmation sensors validate each cycle before the next reject.
How it works
From reject input to controlled line removal
Use this flow to scope a standard reject point, including trigger method, actuator choice, reject confirmation, and event reporting.
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Detect
Watch the reject point
A sensor, scanner, inspection system, or PLC signal identifies product presence and reject eligibility at the station.
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Verify
Confirm the pass/fail input
The reject station accepts a clear fail, divert, or hold command from the upstream control logic.
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Decide
Trigger the correct actuator
Actuator type, timing, product spacing, line speed, and recovery behavior are matched to the application.
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Reject / log
Remove or divert the product
The station pushes, diverts, or knocks off nonconforming items into the scoped reject handling path.
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Report
Log reject status
Reject counts, confirmation sensor status, alarm events, and PLC or CSV records are added when the line needs them.
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 line speed, spacing, actuator style, and product mass.
- Product spacing
- Works best with predictable position through the reject point and manageable spacing.
- Inspection type
- Reject action is driven by upstream vision, sensor, or operator-defined pass/fail signals.
- Reject method
- Sensor-timed pneumatic knockoff/diverter driven by upstream pass/fail signal, with optional confirmation sensors.
- Data outputs
- Reject counts and basic status logs can be added when the controls scope requires it.
- PLC/MES integration
- PLC I/O, pneumatic actuation, stop/go outputs, and confirmation sensors can be scoped.
- What SSI needs to quote
- Product size, weight, spacing, photos, line speed, reject location, trigger source, desired reject action, controls, confirmation, and logging.
Buyer fit
Fit, scope, and quote requirements
Use this section to decide whether a standard knockoff station is enough for reliable reject handling without the added timing complexity of a high-speed platform.
Common applications
- Vision or sensor-driven reject stations
- Go/no-go sorting
- Containment or quality-hold diversion
- Reject bin or lane separation
What it verifies
- Pass/fail trigger source and reject action
- Part presence at the knockoff point
- Reject output or bin status when included
- Basic fault or status conditions as scoped
Integration requirements
- Upstream inspection or sensor output
- Conveyor speed and part spacing
- Air, electrical, and PLC I/O requirements
- Reject path, bin, guarding, and operator access
What SSI needs to quote
- Product size, weight, spacing, and photos
- Line speed and reject location
- Trigger source and desired reject action
- Controls, confirmation, 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 Standard Knockoff configuration.
- Samples, drawings, or product photos
- Line speed, spacing, and orientation
- Reject handling, logging, and integration needs
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Standard Knockoff gallery
