The invention discloses a convex-concave die device capable of preventing material clamping, and relates to the technical field of
machining. The convex-concave die device comprises a concave die anda convex die, wherein a blanking hole is formed in the upper surface of the concave die, the convex die is in sliding fit with the blanking hole, sliding grooves are formed in the side faces of the periphery of the concave die, the sliding grooves communicate with the blanking hole, and sliding blocks are connected in the sliding grooves in a sliding mode. According to the convex-concave die device, a
brush roller, the sliding blocks, a push block, a second spring and a screw rod are used, so that material clamping is avoided; and the screw rod can be driven to rotate by rotating a knob, the screw rod can drive the push block to move forwards or backwards, the closer the push block is to the blanking hole, the larger the pressure borne by the
brush roller is, the larger the friction forceis, otherwise, the smaller the
friction force is, so that the adjusting effect is achieved. According to the convex-concave die device, a
fixed frame, a movable frame, a sliding rod and a first springare used, when the convex die is used for blanking a workpiece, a sliding frame can be extruded to slide upwards, when the convex die is reset, the sliding frame can be reset along with the convex die, in the process, the sliding frame can further remove waste on the surface of the convex die, and material clamping is further prevented.