A Rodless Cylinder Ensuring Sealing and Zero Leakage

Abstract

The invention discloses a rodless air cylinder for guaranteeing zero leakage of sealing. The rodless air cylinder comprises a transversely-arranged cylinder body, the left end and the right end of the cylinder body are fixedly provided with a left cylinder cover and a right cylinder cover correspondingly, and the left cylinder cover and the right cylinder cover are provided with a left air connection opening and a right air connection opening correspondingly; the cylinder body is internally provided with a movement block; the top of the cylinder body is provided with a through slot, the upper portion of the movement block penetrates through the through slot and can move along the through slot, and the lower portion of the movement block moves along the interior of the cylinder body; the position, corresponding to the through slot, of the cylinder body is internally provided with a metal sealing strip, and the two ends of the metal sealing strip are fixed to the inner wall of the cylinder body correspondingly; and the inner wall of the cylinder body and the two sides of the through slot are provided with plastic sealing strips extending in the length direction of the through slot correspondingly, the plastic sealing strips are fixedly and internally embedded to the inner wall of the cylinder body, and the two sides of the metal sealing strip are separably attached to the bottom faces of the plastic sealing strips on the two sides of the through slot correspondingly in a sealed manner. By means of the rodless air cylinder, the problem of sealing leakage can be avoided, and downward-sliding of the movement block can also be effectively controlled.

Description

technical field [0001] The invention relates to the field of piston cylinders, in particular to a sealed and leak-free piston rodless cylinder. Background technique [0002] Ordinary piston rodless cylinder is a conventional energy conversion device. The cylinder body of the piston type rodless cylinder is provided with a moving block and two pistons (usually formed into a connecting piece). The moving block is located between the two pistons. The piston moves repeatedly in the cylinder, and the gas pressure generated in the cylinder pushes the moving block to move repeatedly, so that the pressure of the gas is converted into mechanical energy to realize mechanical action. For the sealing of the cylinder, some use plastic sealing strips to stick to the opening of the metal cylinder body hole for sealing. The disadvantage of this sealing structure is that the plastic sealing strip is easily deformed and extended during repeated movements, making the original precise length ...

AI Technical Summary

Problems solved by technology

The disadvantage of this sealing structure is that the plastic sealing strip is easily deformed and extended during repeated movements, making the original precise length dimension longer, resulting in bending and separation from the cylinder body, resulting in air leakage

The cylinder with such a sealed structure is not suitable for vertical (vertical) use, because a load is added to the moving block and it is pushed to the top through the air supply. A slight air leakage will easily cause the moving block and the load to slide down, resulting in misalignment. standards and safety hazards

When the above-mentioned problems occur in the cylinder with the above-mentioned sealing structure, it can only be returned to the factory for repair and replacement of the sealing strip, which will increase the maintenance cost for the user and affect the normal production

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