High-pressure swing clamp cylinder

Abstract

The invention discloses a high-pressure swing clamp cylinder. The high-pressure swing clamp cylinder comprises a cylinder body, a bottom cover, a piston shaft and a press plate. The inner wall of the cylinder body is fixedly provided with a roll ball. The outer wall of the bottom end of the piston shaft is provided with a spiral groove matched with the roll ball. The bottom end face of the piston shaft is provided with a mounting hole. The bottom cover is provided with a flat needle roller bearing. The flat needle roller bearing is provided with a bearing shim. A spring set is arranged between the mounting hole and the bearing shim. A dustproof oil seal and a step seal are sequentially embedded in the upper end of the cylinder body and adapt to the piston shaft. A glyd ring is embedded in the outer wall of the bottom end of the piston shaft and adapts to the cylinder body. An O ring is arranged between the bottom cover and the cylinder body. The high-pressure swing clamp cylinder is simple and reasonable in structure, small in set size, low in manufacturing cost and usage cost, high in resetting speed and good in sealing performance.

Description

technical field [0001] The invention relates to the technical field of corner cylinders, in particular to a high-pressure corner down-press cylinder. Background technique [0002] The angle cylinder is a cylinder in which the piston shaft rotates along its own axis during the linear reciprocating motion. Common corner cylinders include rack and pinion type, connecting rod type, and ball type. Among them, the ball type corner cylinder is favored by the public because of its simple structure and relatively low manufacturing cost. For example, the authorized announcement number is CN203560203U disclosed "a new type of hydraulic corner pressing cylinder", its structure includes a cylinder body, a bottom cover fixedly connected with the cylinder body, a piston shaft and a rotating shaft, one end of the piston shaft protrudes from the cylinder body and The pressure plate is fixedly connected with the hexagonal nut, and the other end of the piston shaft is inserted into the cylind...

AI Technical Summary

Problems solved by technology

However, the above-mentioned "a new type of hydraulic corner pressing cylinder" has the disadvantages of: due to the arrangement of the cage and the rotating shaft in the cylinder body, the volume of the cylinder body is relatively large, and the manufacturing cost is increased.

Among them, the defect of drive reset is that it needs the help of hydraulic pressure or air pressure, resulting in high cost of use. The defect of load reset is that the reset speed is relatively slow, which cannot meet the use requirements of the quick reset of the corner cylinder.

In addition, the hydraulic corner down-press cylinders currently on the market still have the defect of poor sealing performance, and further improvements to their structures are required.

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