Custom Automated Robotic Arm – Design, 3D Printing & Delivery to Switzerland

We are looking for an experienced Robotics / Mechanical Engineer to design, manufacture and ship a complete automated robotic arm to Switzerland.

## 1. Technical Specifications

- Wall-mounted articulated robotic arm.
- 1,200 mm horizontal reach.
- 2 kg payload capacity at maximum reach.
- 5–6 axes.
- Hybrid construction: 3D-printed components and aluminium structures.
- Compatible with Creality 3D printing technology.
- Fully programmable automatic movements.

## 2. Main Applications

The robot will perform two main operations:

**A. Parcel and Envelope Handling**

- Pick up envelopes and parcels from a weighing station.
- Transfer them accurately onto a conveyor belt.
- Handle different parcel sizes and envelope formats.

**B. Automatic Shipping Label Application**

- Pick up printed adhesive labels.
- Position and apply labels accurately onto parcels and envelopes.
- Verify correct label placement.

## 3. Vacuum Gripping System

We require a vacuum-based gripping solution rather than a conventional mechanical claw.

The design should include:

- Adjustable vacuum suction cups for parcels and envelopes.
- A dedicated precision vacuum head for small adhesive labels.
- Vacuum pressure sensors to confirm successful pickup.
- Automatic vacuum release.
- Replaceable suction cups.
- A suitable compliant application surface to prevent label wrinkles.
- Modular tooling at the robot wrist.

## 4. Machine Vision

The system must include cameras and vision software capable of:

- Detecting the presence and position of parcels and envelopes.
- Identifying dimensions and orientation.
- Determining suitable label application positions.
- Guiding the robotic arm.
- Verifying successful label application.

Possible technologies: Raspberry Pi, OpenCV or industrial machine vision systems.

## 5. Existing Rollo Wireless Printer – Must Be Preserved

We already operate a Rollo Wireless thermal label printer connected to our existing shipping software.

The existing sequential printing system must remain completely unchanged.

- No replacement or reprogramming of the printer.
- No modification of the existing printing workflow.
- Label format: 1 × 2 inches (25.4 × 50.8 mm).
- Automatic detection and retrieval of each printed label.
- Synchronization between the printed label and the corresponding parcel.
- Automatic verification before proceeding to the next label.

The freelancer must design the mechanical and electronic interface required to retrieve and apply the labels.

## 6. Control System

Please propose and compare two alternatives:

**Option A:** Arduino Mega 2560.

**Option B:** Arduino GIGA R1 WiFi.

Both solutions should integrate with a dedicated vision system, such as Raspberry Pi / OpenCV, and suitable motor drivers, encoders and safety devices.

Automatic programmable pick-and-place sequences are required.

## 7. Complete Manufacturing and Delivery

We expect the freelancer to handle the entire project, including:

- Mechanical and electronic engineering.
- Complete CAD design.
- STL, STEP and native CAD files.
- 3D printing of all required components.
- Supply of aluminium and other mechanical components.
- Motors, gearboxes, drivers, sensors and electronics.
- Vacuum gripper and label application mechanism.
- Complete Bill of Materials (BOM).
- Assembly instructions and wiring diagrams.
- Arduino and vision software source code.
- Testing and demonstration videos.
- Quality inspection and secure packaging.
- International shipping of the manufactured components to Switzerland.

## 8. Freelancer Requirements

Please provide:

- Previous robotic arm projects.
- Experience in mechanical engineering and robotics.
- Examples of 3D-printed robotic components.
- Available printing materials and manufacturing capabilities.
- Experience with machine vision and vacuum gripping systems.
- Estimated production time and shipping costs.

## 9. Results

Please quote engineering, manufacturing, components and international shipping separately.

We are looking for a complete, functional and documented solution, not simply a 3D model.

Please explain your proposed architecture and identify any technical limitations before submitting your final quotation. Please provide examples of past similar work.