On May 15, Guangdong Intelligent Expo and South China Robot and Automation Exhibition (IARS&CMM Exhibition) was launched in Dongguan Modern International Exhibition Center. As one of the important equipment exhibitions in South China, the exhibition accurately matches the needs of the South China market and is committed to mining top intelligent equipment and solution resources. Fei Xi (booth number: A2034) this time also brought mobile phone glue wire polishing, micro screw tightening, PCB motherboard assembly, server plug and unplug test related adaptive robot applications, focusing on showing the technical ability, program strength and industry experience in the field of consumer electronics.

3ASC25H208 DATX100 At the same time of the exhibition, Gao Yunfan, marketing director of Fexi Technology, will also attend the Robotics Application Forum and deliver a keynote speech on “Humanized adaptive robots to explore the limits of force control”, introducing to the audience the innovative application cases of Fexi to help customers carry out automation upgrades.

Super powerful control to help the automatic production of smart phones

The manufacturing of smartphones has always been a key area of automation. At this stage, with the gradual increase of smartphone functions, more and more SKUs, and faster and faster production iteration, the past automation solutions can not solve the technical pain points of some key processes, and can not be flexible enough and universal, so enterprises still use a lot of labor in these processes, and have to face the problem of difficult recruitment and high cost.

The removal of mobile phone glue wire is a typical scene. The smartphone with 2.5D/3D screen will have hot melt glue overflow in the process of gluing group screen. In order to ensure the exquisite and beautiful appearance of the mobile phone, it is necessary to wipe and polish the spilled glue to make it appear neat and shiny. Based on the industrial force control capability of the adaptive robot, the non-night mobile phone glue wire polishing scheme uses the robot to hold the workpiece, the use of external TCP, through real-time position and speed compensation, to achieve constant force control, and carry out fine and stable polishing operation.

3ASC25H208 DATX100 The scheme relies on the high-precision dynamic force control and high-frequency force control response of the non-night adaptive robot, so that the robot can simulate the high-frequency reciprocating wiping and polishing action of the human hand, and ensure the stable adhesion of the adhesive tool to the product surface and the constant normal force, so as to remove the rubber overflow of the rubber line at the R Angle of the middle frame and the transition position, and achieve high quality and stable and consistent polishing effect.

At the same time, the scheme can integrate the two processes of rubber line rough polishing and fine polishing in the same workstation, reduce the equipment floor area and material transfer, improve the efficiency and the consistency of process effect.

Another typical scene is the hinge assembly of a foldable screen phone. The screws used for hinge fastening are very small, generally M1, M0.5 and other small models, and the traditional automatic tightening method based on position accuracy is difficult to accurately ensure screw insertion and firm locking, which brings challenges to the user’s production and automation.

After discussing and testing with users, Fexi created a set of micro-screw tightening scheme based on adaptive robot. The scheme adopts force control strategies such as forced-controlled hole search, forced-controlled downward pressure and tooth insertion guide to adapt to workpiece size, Z-direction float and attitude error, so as to achieve high quality tightening with a yield of 99.98%.