1、 Working principle: The core mechanism of converting gas energy into mechanical motion

　　SCHUNK cylinderBy driving the piston motion with the energy of compressed air or gas, linear reciprocating or rotational action can be achieved. Its core components include cylinder barrel, piston, piston rod, cylinder head and seals, and the working process is divided into the following stages:

Intake stage: Compressed air enters the cylinder through the intake port, pushing the piston backwards;

Compression stage: When the piston moves forward, the gas is compressed, and the force generated by the compressed gas acts on the piston again, causing it to move backward;

Exhaust stage: After the work is completed, the compressed gas is discharged through the exhaust port, completing one cycle.

Type difference:

Single acting cylinder: supplying air only on one side of the piston, relying on air pressure to push the piston out, and returning relying on spring force or gravity;

Double acting cylinder: There is air pressure on both sides of the piston, which can move forward and backward through changes in air pressure on both sides, adapting to complex working conditions.

2、 Installation and Debugging Process: A Comprehensive Guide from Security Standards to Performance Optimization

1. Preparation before installation: Safety and regulations come first

Safety regulations:

Strictly follow the manufacturer's specified debugging, installation, operation, environment, and maintenance conditions, and disregard instructions for use is considered unreasonable operation;

Installation, debugging, and maintenance personnel need to read and understand all operating instructions, especially the safety section. It is recommended that customers confirm in writing;

The installation, disassembly, and wiring of motion detectors must be completed by trained and authorized personnel.

Environmental inspection:

Ensure that the installation environment is free of abrasive dust, corrosive vapors, or fluids. If there are special environments, prior consent from SCHUNK is required;

Check the quality of the air source, and ensure that the compressed air meets the DIN ISO 8573-1:4 standard.

2. Installation steps: precise positioning and fixation

Installation form selection:

Linear motion load: installed in a base or flange type, so that the load movement is on the same axis or parallel to the piston movement direction;

Swing load: Installed in a shaft pin or earring type, ensuring that the earring or pin supporting the cylinder swings in the same direction as the load swing, and the lateral load value does not exceed 1/20 of the cylinder output force.

Specific installation operation:

Bottom fixing: Use the bolts in the additional package to install the output end of the rotating unit. If it needs to be fastened on the opposite side, there should be threads inside the shell;

Side fixing: Use four threaded holes to fasten the side and center it through the positioning holes of two locating pins (locating pins are not included in the delivery scope);

Gear installation: It is recommended to use 4 screws and 2 centering sleeves for fixation. If equipped with an optional proximity sensing switch, the control cam positioning plate needs to be installed using the 2 center positioning sleeves between the gear and the mounting plate.

3. Gas/fluid connection: sealing and flow control

Media requirements: Only compressed air is allowed as the medium;

Joint operation:

Only open the required connectors, unused connectors need to be sealed with empty plugs;

The additional package provides an O-ring with a straight through tubeless connector for gas connection of the basic unit;

The version with a central position requires a straight connector to be installed at the bottom opening to drain the unloading piston area. If there is a risk of dirt or moisture infiltration, the exhaust line needs to be connected from the connector to the outside of the critical area.

Usage of flow control valve:

The soft shrinkage of the locking device can be adjusted through the flow control device on the C and D joints;

Refer to section 6.3 of the operation manual for the joint table to avoid affecting the locking and centering function due to the exhaust flow control device.

4. Debugging and Performance Optimization: Fine tuning from Low Speed to Stability

Adjustment of speed control valve:

The throttle valve should gradually open from the fully closed state, and gradually adjust the cylinder driving speed from low speed to the desired value;

Priority should be given to using exhaust throttling to generate back pressure in the cylinder during operation, making the travel speed or speed regulation more stable and avoiding sudden rapid thrust of the piston rod and impact on the cylinder head during startup.

Buffer valve adjustment:

The buffer valve installed on the cylinder head of the cylinder with buffering needs to be readjusted from small to large according to the load and speed, until the cylinder does not produce rebound phenomenon;

During the adjustment process, avoid forcefully locking the buffer, otherwise it may cause poor buffering or damage to the seal of the piston in rapid situations.

No load test run:

Before installation, a no-load test run is required to confirm normal operation before proceeding with formal installation;

Observe whether the cylinder action is smooth and whether the speed meets the requirements. If it does not meet the requirements, adjust the throttle valve on the cylinder.

5. Post installation inspection: Critical distance and signal confirmation

Distance check:

Check the distance from the front end of the cylinder (black part) to the equipment wall panel;

Check the distance from the rear end of the cylinder (black part) to the equipment wall panel;

Check the distance from the extended cylinder piston rod to the equipment wall panel;

Ensure that the spacing between the above three points is consistent and installed correctly.

Signal confirmation:

Observe whether the magnetic switch signal light (LED) lights up when the cylinder is in motion. If it does not light up, it indicates that the installation position of the magnetic switch needs to be adjusted;

The adjustment method is to loosen the fastening bolt of the magnetic switch, let the magnetic switch slide along the cylinder to the designated position, and then tighten the bolt.