To introduce to you: injection molding machine manipulator pneumatic buffer circuit working principle

Injection molding machine manipulator pneumatic buffer circuit working principle? The pneumatic buffer circuit of injection molding machine manipulator is an important part of the manipulator, and its working principle is as follows.

(1)Z direction deputy:

Since the arm only takes out the water inlet material with small mass and the load is small, an exhaust throttle valve (E, D) with a muffler is used to adjust the movement speed of the cylinder executed by the injection molding machine manipulator when driving the cylinder up and down.

(2)Z direction master hand ascending stroke:

Since the mechanical arm takes materials from plastic products and bears the main load, the pneumatic circuit of the cylinder driven by the up and down motion of the arm is specially designed. The design speed of the upward motion of the cylinder is lower than that of the downward motion because the gravity load of the arm is to be overcome when the cylinder goes up. The speed control method is the same as that of the Z-direction deputy. It is also controlled by an exhaust throttle valve (C).

(3) Z-direction main hand descending stroke:

When the cylinder goes down, due to the very high speed of motion required, coupled with the action of gravity inertia of the arm, there will be a strong vibration impact at the end of the stroke, if the same method is used when it is difficult to achieve good results, so the movement speed of the cylinder is specially controlled by the following method.

Two exhaust throttle valves (A, B) are used to form two groups of pneumatic circuits. One group of circuits adjusts the opening of the exhaust throttle valve (B) to a smaller position, and the air supply cylinder is used in the start and end of the stroke, so that the cylinder has greater exhaust resistance in the start and end of the cylinder, thus reducing the speed of the arm.

In the other group of loops, the opening of the exhaust throttle valve (A) is adjusted to A larger position, and the air supply cylinder is used in the middle section of the motion stroke. When the starting section of the cylinder driving arm down ends, the 2-position 3-way solenoid valve (F) of the control loop is switched on, and the exhaust of the cylinder is discharged through the exhaust throttle valve (A) with a larger opening, thus making the cylinder and the arm move at a high speed. When entering the end section, the 2-position 3-way solenoid valve (F) is disconnected again, and the cylinder resumes to exhaust from the exhaust throttle valve (B) with a smaller opening, and observes while adjusting until a satisfactory buffering effect is achieved.