SMC Rodless Pneumatic cylinder It is a larger mechanism and has a stroke. Its rotation requires you to use a buffering device and increase the buffering. You need to have a deceleration circuit and a device to ease the mechanism. , It is recommended that you increase the oil pressure buffer. In addition, in the design, you need to cut off the emergency buffer power supply in time, or the failure of the power source will cause the pressure of the upper source circuit to drop, and the rotational torque will also drop. There is mechanical damage, which has a great impact on the safety of the human body. It is necessary to take safety measures decisively in the design. When designing, it is necessary to take into account the combination of the driving mechanism and the loop to avoid residual conditions in the loop. There are also side factors in each positioning, causing the object to fly out at a high speed. Only by paying attention can you avoid injury.
The inner diameter of the pneumatic cylinder barrel represents the output force of the pneumatic cylinder. The piston should slide smoothly back and forth in the pneumatic cylinder, and the surface roughness of the inner surface of the pneumatic cylinder should reach Ra0.8um. In addition to using high-carbon steel pipes, the pneumatic cylinder barrels are also made of high-strength aluminum alloys and brass.
2) Air Cylinder Kit
There are inlet and exhaust ports on the end cover, and some also have a buffer mechanism in the end cover. The rod side end cover is provided with a sealing ring and a dust ring 6 to prevent air leakage from the piston rod and prevent external dust from mixing into the pneumatic cylinder. The rod side end cover is provided with a guide sleeve 5 to improve the guide precision of the pneumatic cylinder.
3) Piston
The piston is the pressurized part in the pneumatic cylinder. In order to prevent the left and right cavities of the piston from blowing gas from each other, a piston sealing ring 12 is provided. A wear ring 11 is also provided to improve the guide of the pneumatic cylinder.
4) Piston rod
The piston rod is an important force-bearing part in the pneumatic cylinder. High carbon steel is usually used with hard chrome plating on the surface, or stainless steel is used to prevent corrosion and improve the wear resistance of the seal.
5) Buffer plunger, buffer throttle valve
Both sides of the piston are provided with buffer plungers 1 and 3 along the axis direction. At the same time, there are buffer throttle valve 14 and buffer sleeve 15 on the pneumatic cylinder head. When the pneumatic cylinder moves to the end, the buffer plunger enters the buffer sleeve, and the pneumatic cylinder exhaust needs to pass through. The buffer throttle valve increases the exhaust resistance, generates exhaust back pressure, forms a buffer air cushion, and plays a buffering role.
The principle and basic composition of ordinary pneumatic cylinder
Composition: pneumatic cylinder block, piston, sealing ring, magnetic ring (pneumatic cylinder with sensor)
The principle of SMC rodless pneumatic cylinder: the compressed air makes the piston move, and by changing the direction of intake, the moving direction of the piston rod is changed.
Failure form: the piston is stuck and does not move; the pneumatic cylinder is weak, the sealing ring is worn, and the air leaks.
The working principle and structure of SMC rodless pneumatic cylinder
Taking the single-piston rod double-acting pneumatic cylinder often used in SMC rodless pneumatic cylinders as an example, the typical structure of the pneumatic cylinder is as follows. It consists of pneumatic cylinder, piston, piston rod, front end cover, rear end cover and seals. The interior of the double-acting pneumatic cylinder is divided into two chambers by the piston. A cavity with a piston rod is called a rod cavity, and a cavity without a piston rod is called a rodless cavity.
When the compressed air is input from the SMC rodless pneumatic cylinder cavity, the rod cavity is exhausted, and the force formed by the pressure difference between the two cavities of the pneumatic cylinder acts on the piston to overcome the resistance load and push the piston to move, so that the piston rod extends; When the rodless chamber is vented, the piston rod is retracted. If the rod cavity and the rodless cavity are alternately inhaled and exhausted, the piston realizes reciprocating linear motion.
Post time: Jun-21-2022