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Home / Flexible I/O and Program Expansion: A Cartesian Robot for Multi-Process Applications

Flexible I/O and Program Expansion: A Cartesian Robot for Multi-Process Applications

2026/05/06 By le zhan

Traditional Cartesian robots can perform many standard picking tasks, but once a production line begins using custom fixtures, multiple pick-up points, multiple gripping points, or multi-process operations, their systemic limitations become apparent, rendering them unsuitable for non-standard fixtures and multi-process applications. Topstar’s Cartesian robot addresses this issue in two ways:

  • Flexible I/O and program expansion capabilities
  • Configurable with up to 8 suction channels and 8 gripping channels, making them ideal for non-standard fixtures and multi-process applications.

Therefore, during the R&D process, we not only focus on motion performance but also on enhancing the robot’s expandability, communication capabilities, and adaptability to ever-changing application scenarios.

The Challenges of the Traditional Cartesian Robot

The issue with traditional Cartesian robots for injection molding lies in their limitations, which typically manifest in three areas:
Application scope
Flexibility
Fixture compatibility.

First, if a robot supports only limited functions, it struggles to switch between different process steps. Second, if its control system is overly rigid, it becomes difficult to add new signals or logic rules. Third, if the robot is incompatible with custom fixtures, manufacturers must redesign them for production.

These issues consume both time and money. Factories may need to modify fixtures, readjust production processes, or even replace the robot. In such cases, the real issue lies not merely in the mechanical structure itself, but in the need to consider scalability and flexibility from the initial design phase.

The Challenges of the Traditional Cartesian Robot (1)

How can a Cartesian robot achieve scalability and flexibility?

We use the Cartesian robot’s flexible I/O ports and logic programming as the foundation of its control system, giving it the ability to flexibly expand its programming capabilities. This allows the robot to receive more input and output signals and execute more complex logic instructions. This flexibility enables them to be applied in situations where the production line includes different fixtures, different end-effectors, or different process steps.

In many injection molding applications, Cartesian robots must handle multiple actions within a single cycle. They may need to receive a mold-opening signal, grasp a part, initiate mold suction, confirm the grip, transfer the product, and then trigger the subsequent demolding process. If the logic system is too limited, coordinating these actions becomes difficult. Topstar’s Cartesian robot, with its flexible I/O and program expansion capabilities, provides ample capacity to execute these steps seamlessly.

MEWE-80S

Equipped with 8 suction channels and 8 gripping channels

During the production process, parts require suction during extraction, mechanical gripping during transfer, and different release methods upon reaching their destination.
Topstar Cartesian robots support up to 8 suction channels and 8 gripping channels. This expandability directly enhances the robot’s operational flexibility. It enables support for multiple pick-up points, mixed operation modes, or more complex extraction and transfer sequences within a single system.

Injection molding Cartesian robots with limited channels may require additional external equipment or struggle to coordinate these actions efficiently. By directly supporting more channels, our Cartesian robots simplify processes, improve integration, and are ideally suited for custom fixtures and multi-process applications.

Equipped with 8 suction channels and 8 gripping channels

The Importance of Channel Expansion for Custom Fixtures

Custom fixtures increase the complexity of operational workflows. They may alter gripping positions, the number of pick-up points, or the sequence of movements. Cartesian coordinate robots with insufficient channels or limited logical flexibility may struggle to support these changes efficiently. Leveraging the scalable architecture of Cartesian coordinate robots effectively addresses this issue, making the process much easier. They can be configured to match the fixture without requiring the factory to redesign around the machine. This reduces engineering effort and shortens commissioning time. When the robot’s logic consistently aligns with the fixture’s actual behavior, process reliability also improves.

Making Multi-Process Applications Easier to Manage

Production lines typically involve multiple processes, not just part retrieval. Cartesian coordinate robots must perform operations such as lifting, moving, inspecting, sorting, or transferring parts in sequence. In such cases, they must support multi-process logic while maintaining stability and keeping programming complexity manageable.

Topstar’s flexible I/O and programming system enables Cartesian robots to perform these steps more naturally. By coordinating with conveyors, inspection stations, palletizing units, or custom downstream fixtures, they can directly manage more workflows, reducing operator setup time and ensuring a more stable production line operation.

Addressing Limited Application Scope and Low Flexibility/Scalability

Topstar’s Cartesian coordinate robots address the challenges of limited application scope and low flexibility/scalability through flexible I/O expansion, logic programming, and support for up to 8 suction cup channels and 8 gripping channels. These features make them ideal for custom grippers and multi-process workflows.

 

 

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