Plastic Robotic Arm Structure Without Work Openings

The arm body is divided into multiple modular sections (first arm body, second arm body, third arm body) that can be assembled together. Each section has its own actuator and can be independently manufactured and tested, then connected through connection portions without requiring work openings in the main tubular body structure.

The arm body is segmented into modular sections that can be detached and replaced independently. The connection portions provide standardized interfaces for assembly and disassembly without compromising the sealing integrity of the main tubular chambers, as connections are made at designated interface regions rather than through the sealed tubular walls.

The arm body is manufactured as separate modular sections using injection molding, then assembled through connection portions. This allows each section to be manufactured independently with seamless sealed surfaces, and assembly occurs through dedicated interface regions. The resulting structure maintains continuous sealed surfaces on the tubular bodies, meeting hygiene requirements for applications like food processing while keeping manufacturing simple.

The connection portions are made of metal material integrated with the plastic tubular body, creating a composite structure that combines the strength and rigidity of metal with the lightweight and cost-effective properties of plastic. The metal connection portions provide robust mounting surfaces for actuators and other components, while the plastic tubular sections maintain the benefits of injection molding manufacturing.