How To Choose The Rodless Cylinder That Suits You? Detailed Analysis Of Cylinder Types And Characteristics
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Rodless Cylinder, as a key actuator in a pneumatic system, its selection is crucial. Before we delve into the selection, let us first give an overview of the various types of cylinders and their respective characteristics.
1. Classification by structural form:
(1) Double-acting cylinder: This type of cylinder is often used with a double-electric solenoid valve, and its telescopic action control is extremely flexible. However, if it is used with a single-electric solenoid valve, there is a potential risk because the valve core will automatically reset when the power is off, causing the cylinder to suddenly move, which may endanger the operator.
(2) Single-acting cylinder (default extension type and default retraction type): Single-acting cylinders use internal springs to achieve reset and only require a single-electric solenoid valve for control, with a relatively high cost-effectiveness. However, in harsh working environments, springs as force-bearing components are prone to wear, which will seriously affect the service life of the cylinder and are difficult to repair once damaged.
2. Classification by function:
(1) Buffer cylinder: This type of cylinder has a buffer function, which can avoid equipment damage or personal injury caused by excessive impact force. It has a buffer mechanism inside that can gradually reduce the speed when the cylinder extends or retracts to ensure a smooth stop.
(2) Locking cylinder: The locking cylinder can be locked in a specific position to ensure stability and safety during operation. Its unique design has a high locking force and is often used in applications that require a fixed position to be maintained for a long time.
(3) Swinging cylinder: The swinging cylinder can swing back and forth around a fixed point to achieve high-precision angle control. Its compact structure is suitable for working environments with limited space and is widely used in automation equipment and robotic arms.
(1) Cylinder with buffer: This type of cylinder is usually equipped with an adjustable air buffer or a non-adjustable elastic pad buffer to reduce the impact force of the piston rod on the cylinder body at the end of the stroke and reduce internal noise.
(2) Standard cylinder: It has excellent performance in terms of price, performance and delivery time and is the first choice in many applications.
(3) Swinging cylinder: It is divided into vane type and rack type. The former is suitable for small torque and low precision occasions, while the latter provides large torque and high precision rotation.
(4) Sliding cylinder: It is particularly suitable for working conditions where the piston rod needs to bear radial loads. Its internal structure usually includes a piston rod, a guide shaft and a linear bearing or an oil-free bushing.
(5) Rodless cylinder: It is suitable for occasions with compact axial space and has a wide range of stroke options.
(6) Locking cylinder: When the air is accidentally cut off, this type of cylinder can ensure that the actuator remains in a critical position, such as preventing the vertical motion mechanism from falling or the workpiece clamping mechanism from loosening, thereby ensuring the safety of equipment and personnel.
(7) Compact cylinder: It is also suitable for occasions with compact axial space, but the stroke selection is relatively limited.
(8) Piston rod anti-twist cylinder: Its piston rod is designed to be square, which effectively prevents the piston rod from rotating.
(9) Round cylinder: It performs well in occasions with compact radial space and has a wide range of stroke options.
(10) Cylinder with position detection: The travel limit position is accurately detected by the cooperation of the magnet inside the piston rod and the external magnetic switch. This type of cylinder is usually equipped with a magnet to ensure long-term reliability; if the magnetic switch fails or the signal is unstable, a proximity sensor can be added through an external mechanism to achieve detection function.
