(abandonded) component: mini stock elevator

An elevator for feeding stacked sheet stock sheet-by-sheet.

specifications

(subject to adjustment)

• Accepts vertical 100mm stack of stock

• Dimensional tolerance across stackup +- 2mm in XY

• Stock dimensions <= 200mm x 200mm x 10mm, must be rectilinear

• Outfeed at the top of the stack, height TBD

• Package dimensions: <= 250mm x 250mm x 250mm

• DIN rail mountable

• M4 machine screw mounting holes in corners

• Power interface: 12V, 5A barrel jack

communication interface

• Speaks Protobuf (plug) over UART, 115200 baud

• 12-pin IDC connector (candidate standardized pinout)

• Digital pin control (preconfigured temperature, closing height, feed distance)

  • In
    • Feed once (edge triggered)
  • Out
    • Feeding
    • Out of stock
    • General fault

cost/complexity

• On the order of $100 in parts, most COTS, some 3d printed, PCB
• Assembly time: an afternoon

work-in-progress BoM

• $20 shafts (~10mm?)

• $10 bushings

• OR: $10 v rollers with 8020

• $30? 8020 frame + assembly hardware

• $10 3d prints

• $10 electrical components

• $15 lead screw x2

• $12 NEMA 12 stepper

• $9 GT2 Belt

• $7 GT2 Pulleys