Two-axis and three-axis robots differ significantly in their structural design and application scenarios.
The specific differences are as follows:
1. Structural Design Differences
[Two-Axis Robots]
Typically consist of an arm, pull-out axis, and a traverse axis. They utilize servo drives instead of
cylinders and offer simple palletizing capabilities. They are available in high-speed models (suitable for
rapid stacking of thin-walled products) and standard models (with loads up to 5 kg, suitable for
medium-sized injection molding machines).
[Three-Axis Robots]
Comprising an arm, pull-out axis, and traverse axis, all three axes utilize servo drives, supporting multi
-axis linkage and complex motion programming. They can be expanded to single-section/double-
section, single-arm/double-arm configurations. Some models feature an open bullhead design, suitable
for handling large workpieces.
2. Application Scenario Comparison
[Type]
[Typical Applications]
[Advantages]
[Two-Axis Robots]
High-speed pick-and-place stacking of thin-walled products such as fast-food containers
[Simple part removal operations for 350-650 ton injection molding machines]
[Three-Axis Robots]
Synchronously remove finished products from complex molds and their nozzles.
Precision operations such as in-mold labeling, hardware insertion, and automated packaging.
Positioning accuracy reaches ±0.1mm, and special path programming (such as arcs and diagonal lines)
is supported, increasing production capacity by 20%-30%.
III. Functional Scalability: Three-axis robots can be adapted to three-plate molds or stacked molds by
adding auxiliary arms, or expanded to five-axis robots for more complex angle adjustments. Two-axis
robots have relatively limited functionality, primarily used for basic pick-and-place and stacking, and are
unable to cope with the demands of multi-process collaboration.
