Single-component double-twisted polyester fiber production equipment and production method thereof

The single-component double-twist polyester fiber production equipment comprises a supporting frame, a fixing cylinder and a winding cylinder, the bottom of the left side of the supporting frame is fixedly connected with a bottom plate, and the top of the right side of the supporting frame is fixedly connected with a top plate; two sets of first mounting plates and second mounting plates are symmetrically and fixedly connected to the top of the bottom plate and the left side of the top plate in the front-back direction correspondingly, square blocks are rotationally arranged on the front faces and the back faces of the fixing barrel and the winding barrel correspondingly, and one sides of the square blocks are clamped to the tops of the first mounting plates and the left sides of the second mounting plates; a positioning plate is fixedly connected to the two sets of square blocks on the front face, a mounting frame is arranged on the front face of the positioning plate, and a first motor used in cooperation w