Intelligent energy-saving overload protection device of crank press and overload protection method

Abstract

The invention discloses an intelligent energy-saving overload protection device of a crank press. A connecting rod ball head is restrained by an end cover, the ball head is mounted in a spherical support, the support is arranged in a cylinder body, the bottom of the support is connected with the upper end of a spring, and the lower end of the spring is fixed to the bottom in the cylinder body. A pressure sensor is located between the outer bottom of the cylinder body and an adjusting cushion plate and connected with a controller through a data line, and the adjusting cushion plate is located on a sliding block. Multiple permanent magnets are vertically arranged on the inner wall of the inner edge of the cylinder body annularly, and N poles and S poles of the adjacent permanent magnets arealternately arranged. The cylinder body is filled with magnetorheological fluid. A limiting end cover is fixed to the end cover of the cylinder body, and a travel switch connected with the controllerthrough a data line is mounted on the limiting end cover. An inner cavity of the cylinder body is divided into two parts through the spherical support, and the two parts communicate with each other through a throttling hole in the support. Magnetic pole polarity generated after a coil winding on the portion, on the inner side of the throttling hole, of the support is powered on are alternately arranged similar to the permanent magnets. The invention further discloses a protection method utilizing the device.

Description

Technical field [0001] The invention relates to a forging machinery technology, in particular to an intelligent energy-saving overload protection device and an overload protection method for a crank press. Background technique [0002] The crank press plays a very important role in the traditional machining industry. It can cut, punch, blank, form, bend, riveting and other processes of sheet, strip and coil, especially for tonnage comparison The large crank press, by applying strong pressure to the metal blank, causes the metal to undergo plastic deformation and fracture to complete the processing of the parts. Crank presses often face overload problems in the actual production process, which will cause more serious damage to the crank press, especially for large crank presses, causing more serious production losses. [0003] Faced with the overload problem of crank presses, the existing solutions always have different problems whether they are mechanical or hydraulic. [0004] Mec...

AI Technical Summary

Problems solved by technology

[0006] These lead to unstable performance of mechanical overload protection devices and hydraulic overload protection devices, and the accuracy and reliability cannot meet the design requirements, and some basically cannot achieve accurate protection.

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