The working principle of magnetic Pneumatic cylinders
The small magnetic switch cylinder is a type of magnetic switch cylinder. It is compact and beautiful in appearance, with superior performance. Its working principle is as follows:
The small magnetic switch cylinder is equipped with a magnetic switch on the outside of the cylinder barrel. The cylinder can be of various types, but the cylinder barrel must be made of materials with weak magnetic permeability and strong magnetic isolation, such as hard aluminum, stainless steel, brass, etc. A permanent magnet ring is installed on a non-magnetic piston. When the magnetic ring moves along with the piston and approaches the switch, the two reeds of the reed switch are magnetized and attract each other, and the contact closes.
When the magnetic ring is removed from the switch, the reed loses its magnetism and the contacts open. When the outlet closes or opens, an electrical signal is sent out to control the corresponding solenoid valve to complete the switching action. As shown in the following figure. Magnetic switches usually also have indicator lights for switch operation and overvoltage protection circuits inside, which are encapsulated in a shell with resin.
The difference between magnetic cylinders and ordinary cylinders
The difference between the two is that the pistons in magnetic cylinders sometimes have magnetic rings, while those in ordinary cylinders do not. Cylinders with magnetic rings can be equipped with magnetic induction switches or magnetic induction sensors on the outside of the cylinder to detect the position of the cylinder piston and then implement some other control schemes.
Some of the pistons inside the cylinder are equipped with magnetic rings, while others are not. This depends on the need. For cylinders equipped with magnetic rings, magnetic switches can be installed on the outside of the cylinder. When the cylinder operates, at a certain position, an electrical signal can be fed back to the PLC for control through magnetic induction (since the installation position of the magnetic switch can be changed, the stroke of the cylinder can be freely controlled).
How to distinguish between magnetic and non-magnetic cylinders
First, if the cylinder barrel of the cylinder is made of steel pipe, then the cylinder will definitely not be magnetic. As we all know, iron will lose its magnetism and demagnetize when in prolonged contact with a magnet. Therefore, if the cylinder is made of steel pipe, there is no need to consider that the cylinder will have a magnetic ring.
Second, find an iron object like a paper clip or a pin and test it near the cylinder piston. If it adheres to the cylinder wall, then this cylinder has a magnetic ring; otherwise, it doesn't.
Above is The Working Principle Of Magnetic Cylinders And The Differences Between Magnetic Cylinders And Ordinary Cylinders content, to learn more related information, are available at https://www.joosungauto.com/.
