Gears and transmission
Gravity-Drop Tag Dispenser Exploded Multi-Part
- Bounding box
- 2524.5 × 150.0 × 100.0 mm
- Engine
- Precision B-rep
- Parameters
- 49
- Published
- September 30, 2026
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The prompt
Design a 3D-printable gravity-drop tag dispenser for an autonomous hot-desk robot (Steward). Drops one flat tag beside a detected item on a 74.8 cm desk, triggered by NVIDIA Jetson GPIO/PWM. REQUIREMENTS (IC382 Rulebook): - Magazine: ≥20 tags/category, 2–3 colour-coded categories (≤5g, ≤A6). - Drop 5–15 cm; tag lands flat, face-up, readable at a glance (MRK-04). - Gravity only, no adhesive/magnets (MRK-03). - Enclosed hopper, 10–15 mm exit slot, no exposed gears/springs (SAF-04). - Mount: 4× M4 on 100×80 mm pattern to provided wheelbase. - ≤1.5 kg total; edges filleted ≥1 mm (SAF-02); labelled "DO NOT INSERT FINGERS". MECHANISM: - Hopper 200×150×100 mm, 2.5 mm PLA, 15° sloped floor. - SG90/MG996R servo → sliding gate, one tag per 90°. - Curved exit chute (r=40 mm); spring finger anti-jam. - IR break-beam confirms dispense. DELIVERABLES: - STEP assembly + exploded view. - DXF flat panels (acrylic option). - BOM (servo, microswitch, SS304 M3/M4, spring wire, grommet). - 5–10 step assembly guide.
Parameters
| Name | Value | Range |
|---|---|---|
| Layout Gap | 220 mm | 150 – 400 |
| Hopper Length | 200 mm | 100 – 300 |
| Hopper Width | 150 mm | 80 – 250 |
| Hopper Height | 100 mm | 50 – 200 |
| Hopper Wall Thickness | 2.5 mm | 1.5 – 5 |
| Hopper Floor Angle | 15 deg | 5 – 30 |
| Hopper Exit Slot Width | 12 mm | 10 – 15 |
| Insert Length | 200 mm | 100 – 300 |
| Insert Width | 150 mm | 80 – 250 |
| Insert Thickness | 3 mm | 1 – 6 |
| Insert Angle | 15 deg | 5 – 30 |
| Servo Length | 40 mm | 20 – 60 |
| Servo Width | 20 mm | 10 – 40 |
| Servo Height | 40 mm | 20 – 60 |
| Gate Length | 80 mm | 40 – 120 |
| Gate Width | 30 mm | 15 – 50 |
| Gate Thickness | 3 mm | 1 – 6 |
| Chute Radius | 40 mm | 20 – 80 |
| Chute Width | 90 mm | 40 – 150 |
| Chute Length | 120 mm | 60 – 200 |
| Chute Wall Thickness | 2.5 mm | 1.5 – 5 |
| Chute Height | 20 mm | 10 – 40 |
| Spring Wire Diameter | 0.8 mm | 0.4 – 2 |
| Spring Length | 50 mm | 20 – 100 |
| Sensor Length | 20 mm | 10 – 40 |
| Sensor Width | 10 mm | 5 – 25 |
| Sensor Height | 15 mm | 5 – 30 |
| Microswitch Length | 20 mm | 10 – 40 |
| Microswitch Width | 10 mm | 5 – 25 |
| Microswitch Height | 6 mm | 3 – 15 |
| Base Plate Length | 120 mm | 80 – 200 |
| Base Plate Width | 100 mm | 60 – 180 |
| Base Plate Thickness | 5 mm | 3 – 10 |
| Base Hole Diameter (M4) | 4.3 mm | 3 – 6 |
| Base Hole Spacing X | 100 mm | 60 – 160 |
| Base Hole Spacing Y | 80 mm | 50 – 140 |
| Enclosure Length | 80 mm | 40 – 150 |
| Enclosure Width | 60 mm | 30 – 120 |
| Enclosure Height | 30 mm | 15 – 60 |
| Grommet Inner Diameter | 10 mm | 6 – 20 |
| Grommet Outer Diameter | 16 mm | 8 – 30 |
| Grommet Length | 8 mm | 4 – 20 |
| Screw Diameter | 4 mm | 2 – 6 |
| Screw Length | 12 mm | 5 – 30 |
| Washer Outer Diameter | 9 mm | 6 – 20 |
| Washer Inner Diameter | 4.3 mm | 2 – 8 |
| Washer Thickness | 1 mm | 0.5 – 3 |
| Nut Outer Diameter | 7.5 mm | 4 – 15 |
| Nut Thickness | 3.2 mm | 1 – 8 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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