About the working principle of vacuum suction cups

About the working principle of vacuum suction cups

July 01, 2021

The vacuum suction device is a labor-saving machinery for object lifting and handling and holding by the vacuum source of the vacuum suction cup. Compared with machinery, the electromagnetic lifting device has the following characteristics: simple structure, low cost, simple installation, convenient operation, low maintenance cost, no damage to the workpiece, adsorption, rapid release of work, the type of workpiece material is not limited, the maximum adsorption capacity is Limited, it is difficult to obtain accurate position accuracy.

The vacuum chuck is the executive component of the vacuum adsorption device, which can convert vacuum energy into mechanical energy. The reasonable degree of the vacuum suction cup design directly affects the performance of the vacuum suction device. According to different applications, the effective selection and design of vacuum suction cups is one of the keys to the successful application of vacuum adsorption technology. Vacuum absorption technology is based on atmospheric pressure. A certain amount of gas molecules are extracted from the vacuum source through the vacuum source to reduce the pressure and reduce the pressure difference between the inside and outside of the suction cup. Under the pressure of the pressure difference, the suction cup is pressed on the workpiece, so that the workpiece is sucked.

The effective suction area of ​​the suction cup is about 80% of the suction cup area, and the vacuum degree is about 90% of the maximum value. The safety factor varies with the changing conditions of use. In addition to the above safety factors, it should also be considered whether the workpiece is adsorbed on the surface of the workpiece with oil adhesion, the gravity acceleration of the workpiece, and whether the center of the workpiece and the adsorption force line coincide with the workpiece material.

For a fixed suction cup volume, the required vacuum degree reaches the required time and vacuum degree, and the switching cycle of the suction cup is called a suction cup. The reciprocal of the switching period is called the switching frequency of the chuck. The magnitude of the switching frequency reflects the movement speed of the sucker rod. In actual work, it is necessary to meet the requirements of the entire working cycle time of the machine.