SHANGHAI (Reuters) - Shares in China's Midea Group Co Ltd <000333.SZ> hit a record high on Friday afternoon after the home appliance maker said it was increasing its stake in German robotics maker Kuka <KU2G.DE>, as part of a 4.5 billion euro ($5 billion) takeover.

At 0632 GMT, Midea shares were up 6.5 percent at 28.80 yuan.

Together with a 13.51 percent stake already owned by Midea, the Chinese firm said on Thursday it would hold a total of 70.29 percent of Kuka.

The takeover offer will expire at midnight on Friday.

(Reporting by Nathaniel Taplin; Editing by Kenneth Maxwell)