a pressure protection device

Abstract

The invention discloses a pressure protection device, and relates to the field of pressure equipment. The pressure protection device comprises a worktable, guide rails, a connecting rod and a small oil outlet pipe; an oil cylinder device, fixedly connected, is arranged on the guide rail on the left side; one side of the oil cylinder device is fixedly connected with the connecting rod, and the other end is connected with an oil storage tank embedded in the guide rail on the right side through an oil outlet pipe and an oil sucking pipe; a first one-way valve is arranged in the oil sucking pipe;a second one-way valve is arranged in the oil outlet pipe, and a limiting switch is arranged near an outlet of the oil storage tank; one end of the small oil outlet pipe communicates with the oil outlet pipe, and the other end communicates with the oil storage tank; and the pressure protection device is slidingly connected with the oil outlet pipe. The pressure protection device is adopted; and when the pressure is excessive, as the distance from a push plate to the bottom of an oil cylinder is larger than the distance from the bottom of a slide block to the upper surface of a worktable, the oil cylinder device closes a power supply of a press beforehand before the slide block reaches the worktable, the press is effectively protected, and the service life of the press is prolonged.

Description

technical field [0001] The invention relates to the field of pressure equipment, in particular to a pressure protection device. Background technique [0002] Due to its high processing efficiency and wide application range, the press is widely used in mechanical processing. During the working process of the press, overload often occurs, which not only easily causes damage to the press, but also reduces the processing of mechanical workpieces. quality. Most of the existing press overload protection devices are to install crushed blocks on the press. When the press is overloaded, the crushed blocks are crushed and the press stops working. In this way, it is necessary to clean the crushed crushed blocks and replace them with new ones. The pressure collapses quickly, and it is easy to cause damage to the press. In addition, the ultimate pressure required for the work to be processed is also different, and excessive pressure will damage the workpiece. [0003] Chinese patent ap...

AI Technical Summary

Problems solved by technology

However, the press overload protection device must shut down the press after the die feels the overload pressure when the pressure is overloaded, and cannot sense the overload pressure in advance and shut down the press

Images