Single-Pass Inkjet Plus Robotic Pick-and-Place for Reciprocating Blades
Reciprocating-saw blades are an awkward decoration substrate.
Application profile: a North American reciprocating-blade OEM running a high-volume blade-decoration program. Annual output measured in the millions of blades, multiple SKUs sharing the same line, and a need to print brand identity and TPI (teeth-per-inch) designators directly on the blade body at a quality level the trade channel and end users would accept.
Reciprocating-saw blades present an awkward combination for traditional decoration: a long, narrow, slightly tapered substrate; a hardened-steel surface that resists ink adhesion without preparation; a printable area too small for screen and too detailed for stamping; and a product mix where SKU changes happen multiple times per shift.
The legacy pad-print process required a dedicated operator at the print station — loading blades by hand, indexing them under the pad, recovering misfeeds, swapping clichés on every SKU change — and the manual handling capped both throughput and consistency. Pad print also struggled with the multi-color brand graphics the marketing team wanted to standardize across the recip line, forcing tradeoffs between visual quality and run rate.
XD-70 single-pass cell with robotic part transfer end-to-end.
EPS deployed an XD-70 single-pass inkjet cell with a robotic pick-and-place station handling all part transfer. A six-axis vacuum gripper takes each blade from an indexed infeed conveyor, presents it to the single-pass print bridge in a fixed orientation, and releases it onto the cure conveyor — no operator hands touch the blade between blank infeed and finished outfeed.
The cell uses a production-grade printhead family in a fixed-position array, with single-white plus CMYK ink chemistry from a qualified manufacturer of record. Integrated LED-UV cure pins each printed area immediately after the head bridge, eliminating the smear risk that would otherwise come with continuous-flow part transfer. Brand graphics, TPI designators, and any per-SKU variable data all print in a single index with no cliché change.
Blade Infeed
Blade blanks arrive at the cell on an indexed conveyor, oriented and spaced for the robot to engage. No operator handling between the production tote and the cell.
Robotic Pick-and-Place
A six-axis arm with a multi-cup vacuum end-effector lifts each blade and rotates it to print orientation. The same end-effector handles every SKU in the recip line; tooling change is software-only — no end-of-arm swap, no operator setup time.
Single-Pass Print
The blade passes under a fixed-position printhead array. White + CMYK lay down in one continuous index. No carriage motion, no station-to-station registration drift, no per-color cycle time. Brand identity, TPI designators, and any per-SKU variable data print together.
Fixed Printhead Array
Production-grade printhead family in a fixed-position array — no reciprocating carriage, no multi-pass overhead. Each blade gets a single index under the bridge and exits print-ready for cure. The architecture is what eliminates the per-color registration drift that pad-print multi-color decoration carried.
LED-UV Cure & Outfeed
An in-line UV-LED bank cures each printed area within seconds of deposition. The blade leaves the print zone print-dry, eliminating the smear risk inherent in continuous-flow part transfer. The robot then releases the cured blade onto an outfeed conveyor for downstream packaging. The cell runs continuously with no operator intervention between blank-in and finished-out.
What the cell delivered against the original brief.
Operator removed from print station
Eliminated the dedicated operator station at the print step — the cell runs lights-out for the print-and-cure operation.
Continuous-flow throughput
Single-pass throughput materially above the prior pad-print rate. The legacy line required station-to-station indexing; the XD-70 cell runs continuous-flow.
Multi-color in one pass
Multi-color brand identity and TPI graphics print in a single pass — no second-color station, no per-color registration recovery.
SKU change as a software event
SKU changeover collapsed from a cliché swap to a software change — significant downtime reduction across a multi-SKU shift.
No solvent flash
LED-UV cure eliminates the solvent flash and ventilation footprint that pad-print inks typically require.
Engineering a similar industrial cutting-tool decoration cell?
Recip blades are one of the cleanest cases for single-pass inkjet in the industrial vertical — long enough to need throughput, narrow enough that a fixed head array makes economic sense, and multi-SKU enough that pad-print changeover is the real cost driver. The win isn't the print quality. The win is removing the operator from the loop and recovering the shift.