RP America, a UnionTech reseller, was eager to introduce the UnionTech RSPro1400 at the AMUG conference March 10-14 in Chicago, Illinois. The event highlighted the RSPro1400, an industrial SLA 3D printer that features advanced multiple galvanometer technology. This innovation enables high-speed precision 3D printing by using multiple scanners to precisely direct the movement of the light beam, setting a new industry standard.
Technical data of the RSPro1400
| technology | Stereolithography Appearance (SLA) |
| Build volume | 1400 × 700 × 500 mm (55.1 × 27.6 × 19.7 inches) |
| accuracy | Dimension <100 mm: ±0.2 mm
Dimension ≥100 mm: ±0.2% x dimension |
| Layer thickness | 0.1-0.25mm |
| Scan speed | 6-10 m/s |
| Machine dimensions | 1885 × 1835 × 2100mm
74.21 x 72.24 x 82.68 inches |
| Machine weight | 1907 kg |
Increased efficiency through synchronous operation
UnionTech’s innovative approach combines multi-scanner 3D printing with a multi-laser system, simplifying the optical system design and providing cost advantages. However, achieving synchronous operation with multiple lasers remains a challenge in the industry. UnionTech’s research and development team has developed sophisticated algorithms and system upgrades to achieve synchronized control of each laser, doubling printing speed and efficiency. Nevertheless, the galvanometer, a crucial component of the optical system, introduces significant shape distortions due to its design principle. The industry typically uses a manual calibration method with low accuracy, unstable results and low efficiency. UnionTech’s innovative automatic calibration technology for multiscanners utilizes precise positioning to eliminate the complexity of designing and using large calibration plates. Unlike the general manual method that includes 89 calibration points, UnionTech’s Multi-Galvanometer Series 3D printer can set 1798 calibration points with a point position detector, achieving a fully automatic calibration process with an accuracy of 0.06-0.1mm. This process eliminates human error and ensures the stability and accuracy of printed parts.
Revolutionary splicing for superior mechanical integrity
UnionTech’s R&D team strives to improve the splice overlap area of its 3D printers. They have developed a new splice scanning algorithm that seamlessly joins the two halves of the same molded part scanned by adjacent scanners. This innovation increases the contact area between the halves, ensuring excellent mechanical properties in the spliced section. UnionTech’s “Cross-Splicing” technology ensures that both the surface quality and mechanical integrity of the formed parts are maintained in the splice area, achieving over 90% similarity to parts scanned by a single scanner. This ensures consistent quality of all parts.
Groundbreaking innovation in large format 3D printing
Dr. Qingxiao Yu, vice president and general manager of UnionTech’s research and development center, highlighted the company’s commitment to leading innovative technologies. UnionTech has introduced China’s first large-scale multi-scanner automatic calibration technology. This development ensures stable and precise calibration of multiple scanners, corrects scan distortions, and maintains dimensional accuracy of large-format printed parts. Multiscanner stitching calibration technology uses image processing to ensure that the deviation between two points of light in the stitching area is less than half a point of light. UnionTech’s innovative multi-scanner splicing technology ensures that the mechanical properties of the formed part at the splice point are nearly identical to those of the unspliced part. These advances ensure that large-scale 3D printing can deliver one-piece parts with excellent dimensional accuracy, surface quality and joint strength. UnionTech offers its customers practical, reliable and efficient solutions for the production of large-scale one-piece parts.
UnionTech’s multi-galvanometer scanner 3D printing technology is the result of continuous effort and innovation, highlighted by algorithm upgrades, process improvements and advances in technology research. UnionTech strives to overcome real-world challenges while putting customers’ needs first. The ultimate goal of this technology is to accelerate the transition to intelligent manufacturing and create endless opportunities for companies to increase their sales.
