SU1435858A1 - Pneumatic cylinder - Google Patents

Abstract

Invention m. B. used in machine tools, industrial robots and tooling. The purpose of the invention is to increase the reliability and braking efficiency of the cylinder. At the ends of the piston 4 brake chambers (TK) 8 and 9 are made in the form of annular grooves (KP) 14 and 15. At the ends, elastic diaphragms 10 and I are tightly fixed to the periphery, and KP 14 and 15 are loose in the middle. In rod 5 Channels 12 and 13 are made, communicating that TC 8 and 9 with opposite working cavities 6 and 7, respectively. The gearboxes KP 14 and 15 are proportional to the working plate, the piston 4 m from the side of the working cavity, communicated with the corresponding KP, provides for braking the movement of the piston to the cylinder head. At the same time, the air from the TC is forced out by the diaphragm back into the working cavity. 1 il.

Description

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The invention relates to mechanical engineering, in particular to power pneumatic cylinders, and can be used in machine tools, industrial robots and tooling.

The purpose of the invention is to increase the reliability and braking efficiency of the pneumatic cylinder.

The drawing shows a pneumatic cylinder, a longitudinal section.

The pneumatic cylinder includes a housing 1 with covers 2 and 3, a piston 4 with a rod 5 installed in the housing 1 with the formation of working cavities 6 and 7, brake chambers 8 and 9, elastic diaphragms 10 and 11 and channels 12 and 13, made in the rod 5.

Brake chambers 8 and 9 are located on

the ends of the piston 4 and are made in the form of annular grooves 14 and 15. The diaphragms 10 and 11 are made of an elastic material, for example of rubberized fabric, and are tightly fixed on the ends of the piston 4 circumferentially, and in the middle freely grooves 14 and 15 chambers 9 and 8. Chamber 8 is communicated through channel 13 with working cavity 6, and chamber 9 through channel 12 is with working cavity 7. At the same time, the annular grooves 14 and 15 are proportional to the working areas of piston 4, respectively, from the side of cavities 6 and 7 of the cylinder.

Pneumatic cylinder works as follows.

When air pressure is applied to the working cavity 6 and through the channel 13 to the chamber 8, the diaphragm 11 is inflated and deformed. At the same time under the pressure of air, the diaphragm 10 fits the groove 14

chambers 9. At the same time, the piston 4 moves upwards. In the extreme upper position of the piston 4, the diaphragm 11 is blown up to shock the cylinder 3 lid and, squeezing, inhibits the movement of the piston 4 by squeezing the air from chamber 8 back into cavity 6.

Due to the difference in the areas of the annular groove and the piston 4 from the side of the cavity 6, the axial force generated by the air pressure in the cavity 6 is larger than the force B of the cavity 7, and as a result of uneven forces, the piston 4 can be moved when braking to cover 3.

During the reverse movement of the piston 4, the braking process is similar.

Claims (1)

Invention Formula A pneumatic cylinder comprising a housing with covers, a piston with a rod mounted in the housing with the formation of working cavities, brake chambers made in the form of piston bores and elastic diaphragms attached to the piston with the ability to interact with the covers at the end of the piston stroke, characterized in that In order to increase the reliability and effectiveness of braking, the brake chambers are made in the form of annular grooves at the ends of the piston, KaHajibi 0 are made in the rod to communicate the brake chambers with opposite working cavities of the cylinder, The area of each annular groove is proportional to the working area of the piston on the side of the cavity in communication with the groove. 0 five