The piston drives the moving body outside the cylinder body to move synchronously through magnetic force. Its working principle is that a set of high-strength permanent magnet rings is installed on the piston, and the magnetic lines interact with another set of magnetic rings sleeved outside through the thin-walled cylinder. Because the two groups of magnetic rings have opposite magnetism, they have strong attraction. When the piston is pushed by the air pressure in the cylinder, the magnetic ring sleeve outside the cylinder is driven to move together under the action of magnetic force. The thrust of the cylinder piston must adapt to the attraction of the magnetic ring.
(2) Mechanical contact rodless cylinder
There is a groove in the axial direction of the cylinder, and the piston and Shangzhi move in the upper part of the groove. In order to prevent leakage and dust, the cylinder heads at both ends are fixed with stainless steel sealing tape and dust-proof stainless steel tape at the opening, and the piston frame passes through the groove to connect the piston and Shangzhi into a whole. The piston is connected with Shangzhi and drives the actuator fixed on Shangzhi to realize reciprocating motion.