2results about How to "No twisting" patented technology

The utility model relates to the technical field of carbon fiber precursor production devices, in particular to a large-tow carbon fiber precursor winding device which comprises a precursor yarn guide wheel assembly and a compression roller constant thrust control assembly, as the winding radius of a spindle is continuously increased, the spindle pushes a compression roller yarn guide head support leftwards, at the moment, a distance measuring sensor measures the leftward moving distance L of the support, and the distance measuring sensor measures the leftward moving distance L; and the control system controls a wall plate on the protofilament tension control part to synchronously move leftwards for L, so that the compression roller yarn guide head bracket and the protofilament tension control part are relatively static, and the included angle between the protofilament and the yarn guide head is kept constant, such as 59 degrees, thereby ensuring that the pressure of the protofilament on the yarn guide head is constant; therefore, the precursor cannot be twisted in the winding process, yarns are orderly wound, and the production quality and the production efficiency of the carbon fiber precursor are improved.

The utility model relates to a plunger cylinder technical field, especially a compact plunger cylinder of back and forth action, including cylinder body, plunger rod and guide sleeve, the head end of cylinder body is covered in guide sleeve, plunger rod is located in the cylinder body, and plunger rod stretches out from the guide hole of guide sleeve, its characterized by: still including piston rod, the tail end of plunger rod in cylinder body has piston hole, and the piston end of piston rod inserts piston hole, and the inner chamber of piston hole is divided into rod cavity and rodless cavity by the piston of piston end, and the opening of piston hole is covered with cylinder cover, and one piston oil cylinder is formed on plunger rod, and the rod end of piston rod is connected with the bottom end of cylinder body. The utility model has the beneficial effects that: through inlaying piston oil cylinder in plunger cylinder, the self-limiting and back and forth action of plunger cylinder are realized while not increasing the volume of plunger rod, and moreover, plunger cylinder and piston oil cylinder can work simultaneously, and plunger cylinder will not cause the decrease of thrust because of inner chamber piston oil cylinder.