Cylinder with tetragonal prism-shaped piston rod

Abstract

The invention discloses a cylinder with a tetragonal prism-shaped piston rod. The cylinder is mainly characterized in that a piston is arranged in the central circular hole of the cylinder body. The right end of a piston is provided with a tetragonal prism-shaped piston rod integrally formed with the piston. The right end of the tetragonal prism-shaped piston rod respectively passes through a square seal ring A, a square seal ring B and a square seal ring C in a square hole on the center line of a cylinder cover to be exposed out of the right end surface of the cylinder cover. The tail part of the right end of the tetragonal prism-shaped piston rod is provided with a tetragonal prism-shaped joint. The four planes of the tetragonal prism-shaped joint are in the same direction with the four planes of the tetragonal prism-shaped piston rod. The central axis of the tetragonal prism-shaped joint is provided with a threaded hole. The tetragonal prism-shaped joint, the tetragonal prism-shaped piston rod and the piston are on the same central axis. According to the technical scheme of the invention, the accurate orientation is directly realized, while the guiding orientation based on a guiding rod is not required. Therefore, the cost of production equipment is greatly reduced, and the precision of equipment is improved. The occupation space of the equipment is reduced and the weight of the equipment itself is lowered. The economic benefit is significantly improved.

Description

technical field [0001] The invention relates to the technical field of pneumatic equipment, in particular to a cylinder with a square cylindrical piston rod. Background technique [0002] The piston rods of the existing cylinders are all cylindrical. When a part of the force of the moving mechanism connected to the connecting head of the cylinder acts on the radial direction of the connecting head of the cylinder, the piston rod of the cylinder will circle the cylinder together with the piston. The central axis of the cylinder rotates, and the moving mechanism connected to the connecting head of the cylinder will rotate around the cylinder. For the moving mechanism that requires precise orientation, it is usually necessary to use a guide rod on each symmetrical side of the cylinder for guidance. In order to ensure that the moving mechanism that requires precise orientation works along the linear direction of the cylinder's piston rod push / retract stroke. This method of usin...

AI Technical Summary

Problems solved by technology

This method of using the guide rod to guide the piston rod of the cylinder not only needs to process the guide rod, guide seat and guide sleeve, but also the moving mechanism connected to the connecting head of the cylinder will shake after the guide rod is installed, which increases the cost of the equipment. The production cost reduces the accuracy of the equipment, and increases the space occupied by the equipment and the weight of the equipment itself, resulting in great waste

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