Overturning, clamping and material returning device for stretch bending tool

An overturning, clamping and material returning device for a stretch bending tool is characterized by comprising a sliding groove frame, a material returning oil cylinder, a sliding block, an overturning sliding block, an overturning air cylinder, a movable clamping block and a fixed clamping block, the sliding groove frame is provided with a sliding groove, the clamping oil cylinder is fixed to one end of the sliding groove frame, the sliding block is located in the sliding groove and is in sliding fit with the sliding groove, one end of the sliding block is fixedly connected with a piston rod of the clamping oil cylinder, the other end of the sliding block is hinged to the inner side end of the overturning sliding block, the overturning air cylinder is hinged to an air cylinder installing frame, the air cylinder installing frame is fixed to the upper portion of the sliding groove frame, a piston rod of the overturning air cylinder is hinged to the outer side end of the overturning sliding block, the overturning sliding block is fixedly connected with a movable clamping block installing base, the movable clamping block is fixed to the movable clamping block installing base, a fixed clamping block installing base is fixed to the lower portion of the sliding groove frame, and the fixed clamping block and the fixed clamping block installing base are fixed. The overturning, clamping and material returning device integrates the oil cylinder, pneumatic components and mechanical components, a large feeding space is reserved between the movable clamping block and the fixed clamping block through synthesis movement of the movable clamping block, and the feeding operation is greatly convenient. In addition, the material returning working efficiency is improved through a material returning mechanism.