Fluid micro-injection device and execution system thereof

An execution system for a fluid micro-injection device, comprising:

• a base body defining an executor mounting cavity therein, and the base body being provided with a positioning hole that communicates with the executor mounting cavity;
• a movable member movably disposed in the positioning hole;
• an executor movably disposed in the executor mounting cavity, the executor being connected with the movable member to control movement of the movable member;
• and
• an adjusting member movably disposed in the executor mounting cavity and connected with the executor for adjusting a pre-tightening force of the executor;
• wherein the executor comprises:
• a lever disposed in the executor mounting cavity, wherein both ends of the lever are movable, in which a first end of the lever is connected to the movable member to control movement of the movable member;
• an actuator telescopically disposed within the executor mounting cavity, the actuator being connected to a second end of the lever to control movement of the lever, wherein the adjusting member is connected with the actuator to adjust a pre-tensioning force of the actuator;
• and a controller connected to the actuator to control extension and contraction of the actuator,
• wherein the adjusting member is provided at an upper end of the actuator, an upper actuator top block is disposed between the adjusting member and the upper end of the actuator, a lower actuator top block is disposed between a lower end of the actuator and the second end of the lever, and the lower actuator top block abuts against the lower end of the actuator and the second end of the lever,
• wherein the adjusting member includes an upper wedge and a lower wedge, a lower surface of the lower wedge abuts against an upper surface of the upper actuator top block, an upper surface of the lower wedge is formed as a sloped surface extending obliquely with respect to the horizontal direction, a lower surface of the upper wedge is formed as a sloped surface corresponding to a shape of the upper surface of the lower wedge, the upper wedge is movable in the horizontal direction to adjust positions of the upper actuator top block and the actuator in an up-down direction, and
• wherein the lower surface of the lower wedge is formed as a curved surface that is upwardly concave, the upper surface of the upper actuator top block is formed as a curved surface that projects upwardly, and the upper surface of the upper actuator top block has a radius that is smaller than that of the lower surface of the lower wedge.