System overview
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.
High-Speed Knockoff in production
What it solves
- Precise reject placement without time-delay guesswork
- Stable reject timing tied to actual conveyor movement
- Targeted contact using width-based finger activation
How it works
- Configure — Enter product width and adjust offset on the HMI.
- Track — Encoder tracks product movement by pulse count.
- Trigger — Upstream fail output flags the product to reject.
- Reject — Fingers in the width window activate and knock product onto the matched reject conveyor; reject counts increment.
Key capabilities
- Encoder-synchronized tracking (distance-based)
- Width-based finger window (selective activation)
- Reject counts (on-system)
Integration notes
Works with vision, barcode readers, checkweighers, labeling, X-ray, or PLC logic via discrete I/O (scope-dependent).
Project inputs (for scoping)
- Conveyor drive shaft access for encoder mount + speed range
- Product size/weight + minimum gap between products
- Reject conveyor location/direction constraints
- Trigger source details + safety interlocks