Sumidas

TakenakaInterior Layout

Self-propelled robot that inks layout lines, symbols and letters onto construction floors

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How it works on your site

Takenaka's Self-Propelled Inking Robot is a compact wheeled robot that drives itself between points on a construction floor and marks layout points, lines, symbols and text from converted CAD data with an onboard pen plotter, correcting its position against the laser of a Leica 3D Disto surveyor before each mark. It covers wall lines, door and window openings, MEP penetrations and finish boundaries on the floor surface; marks near walls, obstacles and level differences stay with workers. The commercial version, SUMIDAS (current model LM-100-L-2), has shipped from manufacturer MiraiKikai and been rented in Japan through Rental no Nikken since late 2023, and no deployment is on record yet: its two documented runs are Takenaka's own prototype trials on its own premises.

Door and Window Opening Layout

Opening positions come off the same converted CAD drawing as the rest of the layout, and the pen plotter draws the lines, symbols and text for each opening at its stop. Openings inside the band next to walls and columns fall outside the robot's reach and stay with workers.

Finish Boundary Marking

Finish boundaries are drawn as lines from the CAD data, one small plotter area at a time; on the prototype platform the software splits long lines into dashes. Boundaries that meet walls, columns or level changes stay with workers.

MEP Penetration Marking

Each penetration or equipment point is one stop: the robot drives there by odometry and plots the mark and its label from the CAD data. It avoids only the obstacles a person has pre-set in the work area, so the floor is cleared and the no-go areas defined before the run.

Wall Line Marking

The robot drives itself by odometry from point to point inside a prepared work area, stops, and draws each wall line with its onboard pen plotter from the converted CAD drawing. A person pre-sets the obstacles it must avoid, and workers still mark along walls and columns by hand.

Will it work on your site

Site preparation
Surveyor plus at least 2 reference pointsNo-go areas and cleansed drawings set beforehand
Control interface
Tablet or touch panelLM-100-L-1: 10.1-inch Windows 10 tablet included
BIM/CAD requirements
No native BIM import statedWorks from dxf/dwg CAD converted to work data
Battery detail
Li-ion, 25.2 VLM-100-L-2

As the maker states it.

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