Permanent magnetic suction disk with double magnetic loops

The utility model relates to a permanent magnetic sucking disk with double magnetic loops, which is applied to the field of mechanical processing to be used for clamping workpieces or used for hoisting in hoisting operation. The utility model comprises a casing, a faceplate, a pole core plate and a driving mechanism, wherein the faceplate is formed by the alternate arrangement of magnetic conductors forming a pitch, and side magnetic bodies positioned on at least one side face of the magnetic conductors, at least three magnetic poles are formed on the working face, and the side magnetic bodies on the opposite sides are provided with opposite polarities; the pole core plate comprises a plurality of bottom magnetic bodies which are respectively positioned below each magnetic conductor and are oppositely provided with adjacent polarities, at least one of the side magnetic bodies and the bottom magnetic bodies corresponding to the magnetic conductors is towed by the driving mechanism to be changed into a magnetic body with variable magnetic polarities, and magnetic flux generated by the variable magnetic bodies is not less than the magnetic flux generated by fixed magnetic bodies. When the utility model works, a double-magnetic loop system is formed on the working face, therefore the utility model enhances adsorption force; when the permanent magnetic sucking disk with double magnetic loops is turned off, magnetic line loops are formed among the variable magnetic bodies and the fixed magnetic bodies so that the utility model effectively avoids magnetic leaking phenomena being generated, therefore the utility model has the advantages of strong suction force and low cost, and is worth being generalized and applied in relevant fields.