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Hydraulic cylinder piston rod seal structure of punch hydraulic system

A technology of hydraulic system and sealing structure, applied in the hydraulic field, can solve the problems of complicated working mode, heavy equipment weight, low work efficiency, etc., and achieve the effects of improving work controllability, increasing stamping frequency, and reducing labor intensity.

Inactive Publication Date: 2013-02-27
WUXI WELL ELECTRO HYDRAULIC EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing hydraulic system components of this product have many problems from different perspectives such as operation methods, working methods, and complicated structures, which lead to inefficient work, heavy equipment weight, and high costs

Method used

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Effect test

Embodiment Construction

[0010] The hydraulic cylinder piston rod sealing structure of the press hydraulic system described in the embodiment of the present invention, its main steps include:

[0011] (1) First, the seal between the piston rod and the end cover adopts a Y-shaped sealing ring with double lips of the model MA39. The Y-shaped ring has a cut angle less than 45°C, and the double lips are asymmetrical;

[0012] (2) A stop ring is set outside one of the sealing lips to support the upward sealing effect of the piston rod;

[0013] (3) The material of the Y-shaped sealing ring is polyurethane AU92, the maximum working pressure is set to 50MPa, the temperature is -30°C-800°C, and the movement speed is less than 0.4m / s.

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Abstract

The invention discloses a hydraulic cylinder piston rod seal structure of a punch hydraulic system. Firstly, a piston rod and an end cover are sealed by utilizing a bilabial shaft Y-shaped seal ring with the model of MA39; the Y-shaped seal ring is provided with a cut angle less than 45 degrees; double lips are asymmetrical; a baffle ring is arranged outside one sealing lip so as to facilitate the upward sealing effect of the piston rod; and the Y-shaped seal ring is made of polyurethane AU92, the maximum working pressure is set as 50MPa, the temperature is between minus 30 DEG C and 800 DEG C, the movement velocity is less than 0.4m / s. The hydraulic cylinder piston rod seal structure has the beneficial effects of improving the mechanical property, avoiding the abrasion, ensuring the stable movement, easy speed regulation and controllable stroke of a system, reducing noises, improving the stamping frequency, improving the movement accuracy of machines and prolonging the service life; and meanwhile, the hydraulic cylinder piston rod seal structure is conductive to adapting to the requirements of transportation, installation and rack regulation, and can be used for improving the operation controllability and reducing the labor intensity.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to a hydraulic cylinder piston rod sealing structure of a press hydraulic system. Background technique [0002] The hydraulic system has the advantages of large power, good adjustability of working pressure and flow, and heat can be brought back to the oil tank. The hydraulic system device can generate more power than other devices. Under the same power, the hydraulic device is small in size, Light weight, high power density, compact structure. With the development of modern automobile industry, electronic technology and national defense industry, the market demand for stamping equipment, especially high-speed stamping equipment, is increasing. Stamping technology is one of the widely used metal pressure processing methods at present, so countries with advanced industries More and more stamping technology is used to replace cutting technology and other processing technologies. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/32F16J15/3232
Inventor 解正云
Owner WUXI WELL ELECTRO HYDRAULIC EQUIP CO LTD
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