An automatic racket stringing system includes: two lens modules, respectively shooting a racket thread hole on a racket at a first preset position from different two angles, and the lens modules are based on the angles and determine a first relative coordinate of the racket line hole through a triangulation method; and a control unit controls a robotic arm to grab the racket from an initial position and move the racket to the first preset position; the control unit controls the robotic arm to a second preset position clamps a first end of a racket line, and when the first end of the racket line extends a preset length, it is cut by the robotic arm.

A weaving tool for weaving strings in a string bed of a tennis racket is disclosed. The weaving tool has one or more connection bars extending horizontally. Pivotably connected to the connection bars are a plurality of guide bars. The guide bars extend into the string bed of the racket prior to weaving cross strings. The guide bars have perpendicular string channels for receiving the strings in the string bed. The connection bar is moved to the side which moves the strings into an alternating up and down position and allow for a straight space for a cross string to pass through. There are channels in the guide bars which allow a cross string to pass through. There are also string retention members which hold the cross string against the guide bars.

A weaving tool for weaving strings in a string bed of a tennis racket is disclosed. The weaving tool has one or more connection bars extending horizontally. Pivotably connected to the connection bars are a plurality of guide bars. The guide bars extend into the string bed of the racket prior to weaving cross strings. The guide bars have perpendicular string channels for receiving the strings in the string bed. The connection bar is moved to the side which moves the strings into an alternating up and down position and allow for a straight space for a cross string to pass through. There are channels in the guide bars which allow a cross string to pass through. There are also string retention members which hold the cross string against the guide bars.

A positioning structure of a clamper of a threading machine for a racket contains: a rack, an engagement protrusion, an operation member, and two springs. A fixing holder is erected on a support plate of the threading machine, and the rack includes multiple first teeth, the fixing holder includes an accommodation chamber with an opening. The engagement protrusion is received in the accommodation chamber and includes a toothed extension on which multiple second teeth are formed. The engagement protrusion further includes a recess and an abutting fence. The operation member includes a drive portion and a push portion. The two springs are mounted on a top of the engagement protrusion, and two ends of each spring abut against the engagement protrusion and the fixing holder respectively so that each spring forces the engagement protrusion to engage with the rack.

An automatic string weaving system for weaving strings for a stringed sports racquet, comprising a weave assembly that the strings for the stringed sports racquet are weaved through; and an automated string feeder assembly to automatically weave the strings for the stringed sports racquet through the weave assembly.

An automatic string weaving system for weaving strings for a stringed sports racquet, comprising a weave assembly that the strings for the stringed sports racquet are weaved through; and an automated string feeder assembly to automatically weave the strings for the stringed sports racquet through the weave assembly.

A pulling string apparatus of a stringing machine comprising a string gripper, a sensor, a drive element, a transmission mechanism and a control circuit; the sensor is connected with the string gripper to detect the pull force of the string gripper; the control circuit compares the detected pull force value with a pre-set value, and control the rotation of the drive element; the transmission mechanism comprises a mounting base, a sliding block, a transmission rack and a drive gear; wherein the drive gear is connected to the drive element and is engaged with the transmission rack, the sliding block arranged on the transmission rack is connected with the sensor; when the sensor and the string gripper are driven forward or backward by the sliding block under the act of the transmission rack engaged with the drive gear, the racket string will be tensioned or loosened.

A robotic manipulator is used to control the forces and angles applied on the strings during stringing of a lacrosse head. Precise string lengths may be implemented for certain features of the pocket. In some embodiments, the manipulator attaches the pocket to a lacrosse head and produces a strung head which has precise ratios of tension when comparing various strings within the pocket. One or more robot arms with end effectors such as grippers may be used. The forces used when tying each knot can be consistent throughout the pocket, or vary according to which particular knot is being tied. The tension of shooting strings and/or runners may be finely tuned in some embodiments.

A robotic manipulator is used to control the forces and angles applied on the strings during stringing of a lacrosse head. Precise string lengths may be implemented for certain features of the pocket. In some embodiments, the manipulator attaches the pocket to a lacrosse head and produces a strung head which has precise ratios of tension when comparing various strings within the pocket. One or more robot arms with end effectors such as grippers may be used. The forces used when tying each knot can be consistent throughout the pocket, or vary according to which particular knot is being tied. The tension of shooting strings and/or runners may be finely tuned in some embodiments.

A first improvement to racket stringing machines, for the sport racquets in badminton, tennis, racquetball, and squash/etc. sports, includes a tensioning of two opposite strings with one string tensioning mechanism. A movable base for the racket mounting mechanism is used to link the two ends of tensioning mechanism together and achieve the object to string two strings with one action of string tensioning mechanism. A second improvement is specific for the drop weight tensioning method and includes a moving of the support frame of the drop weight, instead of the rotating the drop weight. A third improvement includes a cross-stringing aid for weaving the cross string during the stringing process. Each of these improvements, either alone or together, are believed to speed up the stringing process so that it is much faster than convention stringing equipment.