Working principle of manipulator cylinder, disassembly diagram of manipulator cylinder structure

In recent years, the robot industry has been booming, and it is also the development trend after technology has developed to a certain extent. Robotic cylinders have been widely used in enterprises, replacing traditional manual labor. They not only improve people's working environment, but also ensure the stable production mode of enterprises and improve the quality of products. Recently, I have read a lot of information about robots and intelligent manufacturing. I would like to summarize it here and share it with everyone, so we can learn together!





When it comes to robots, what comes to everyone’s mind should be what is shown in the picture above.

So, what is the inside of the robot hand like? Is there any secret? Let’s share with you the main structure of the pneumatic manipulator.

1. Structure of various parts of the manipulator











Disassembly diagram of robot cylinder structure


1. Swing cylinder 2. Positioning bolt 3. Pneumatic gripper 4, 6, 9. Magnetic switch 5. Standard cylinder 7. Throttle valve 8. Double cylinder 10. Proximity switch 11. Buffer valve 12. Bracket.


The manipulator consists of multiple links and joints. A manipulator is generally composed of a base, actuators, such as clamps, suction cups, etc., as well as joints and connecting rods between them. The manipulator can achieve any movement and steering within its range of motion. We generally refer to the movable joints as degrees of freedom. .










2. Gas path components








Types of air circuit components


The air circuit components involved in pneumatic manipulators mainly include swing cylinders, double cylinders, pen-type cylinders and air source processing components.

Air source treatment components










Air source treatment components


The air source treatment component consists of a pressure regulating filter, an air inlet switch and an elbow. The air source is provided by an air compressor, the pressure range is between 0.6~1.0MPa, and the output pressure is 0~0.8MPa, which can be adjusted. The output compressed air is sent to each working unit. (We recommend you to follow the "Mechanical Engineer" official account to grasp practical knowledge and industry information as soon as possible)

Pen type cylinder










Pen type cylinder


The material is sent to the corresponding position through the reciprocating motion of the cylinder. If the direction of the inlet and outlet air changes, the direction of movement of the cylinder will also change. The magnetic switches on both sides of the cylinder are mainly used to track whether the cylinder has moved to the designated position.

Double coil solenoid valve










Double coil solenoid valve


The double-coil solenoid valve mainly controls the air inlet and outlet of the cylinder to realize the telescopic movement of the cylinder. Pay attention to the positive and negative poles of the red indicator light. If the positive and negative poles are connected reversely, it will still work, but the indicator will be off.

Single coil solenoid valve










Single coil solenoid valve


The single-coil solenoid valve controls the unidirectional movement of the cylinder to achieve telescopic movement. The difference from the double-coil solenoid valve is that the initial position of the double-coil solenoid valve is not fixed and can control two positions arbitrarily, while the initial position of the single-coil solenoid valve is fixed and can only control one direction.

Action analysis of pneumatic components










Schematic diagram of hand control


3. Main sensors

The manipulator detects its own status, such as speed, position, acceleration, etc., through the internal sensors of the sensor, and then realizes the interaction between itself and environmental information, such as distance, temperature and pressure. The environmental information is detected through external sensors. Next, select the corresponding environment mode through the controller to direct the manipulator to complete the task.

The sensors used inside the manipulator mainly include the following:

1. Photoelectric sensor










Photoelectric Sensors


Principle: Diffuse emission occurs after the detection light emitted by the transmitter irradiates the object to be measured. After the receiver receives strong enough reflected light, the photoelectric switch starts to act.

2. Inductive proximity switch










Inductive proximity switch


Principle: There is an oscillator inside the inductive proximity switch, which can generate an alternating magnetic field. When the sensing distance