Automatic lubricating device of precise four-column cutting machine

Abstract

The invention provides an automatic lubricating device of a precise four-column cutting machine. The automatic lubricating device of the precise four-column cutting machine comprises a valve body, a valve element and a compression spring. One end of the valve body is connected with an oil inlet of a hydraulic system. The other end of the valve body is connected with a lubricating pipeline. One end of the valve element is in sliding fit with the valve body. The other end of the valve element abuts against a hydraulic oil inlet. The compression spring is arranged between the valve body and the valve element. Hydraulic oil acts on the valve element to make the valve element slide in the valve body, and the size of the hydraulic oil inlet is adjusted automatically according to the pressure change of the system so that the situation that the lubricating pipeline is damaged when the system pressure is too high can be prevented while sufficient lubricating of a guide column is guaranteed.

Description

technical field [0001] The invention relates to the cutting machine industry, in particular to an automatic lubricating device for a precision four-column cutting machine. Background technique [0002] The cutting machine is mainly for cutting, creasing, punching and other processing of flexible sheet or roll materials. Among them, the precision four-column cutting machine is the most commonly used. When working, the four guide columns of the precision four-column cutting machine must be obtained. Sufficient lubrication, otherwise the service life of the cutting machine will be greatly reduced. Therefore, the current precision four-column cutting machine has an automatic lubrication device. The principle is to use the hydraulic system of the machine itself to supply oil to the four guide columns. There are various ways to realize it. , such as directly diverting the oil supply from the oil inlet, this method has a good lubricating effect, but it is necessary to prevent the o...

AI Technical Summary

Problems solved by technology

[0002] The cutting machine is mainly for cutting, creasing, punching and other processing of flexible sheet or roll materials. Among them, the precision four-column cutting machine is the most commonly used. When working, the four guide columns of the precision four-column cutting machine must be obtained. Sufficient lubrication, otherwise the service life of the cutting machine will be greatly reduced. Therefore, the current precision four-column cutting machine has an automatic lubrication device. The principle is to use the hydraulic system of the machine itself to supply oil to the four guide columns. There are various ways to realize it. , such as directly diverting the oil supply from the oil inlet, this method has a good lubricating effect, but it is necessary to prevent the oil pressure from being too high to damage the lubricating pipeline and affect the working pressure of the system. This method is safer, but the oil pressure is low, sometimes the lubrication effect is not ideal, and it is connected to the oil circuit in the lower chamber of the oil cylinder. This method has moderate oil pressure and reliable lubrication, but it will affect the seal of the lower chamber of the oil cylinder, which is prone to accident head drop phenomenon

[0003] In view of the above situation, manufacturers need to take corresponding measures when using different lubrication methods. For example, the oil inlet diversion oil supply method must have a step-down and throttling device. Now the commonly used method is the small hole throttling method, that is, Let the pressure oil in the oil inlet of the system supply the lubricating pipeline through a small hole. Since the system pressure changes at any time, the actual control effect is very unstable. Sometimes the pressure in the lubricating pipeline is high, and sometimes the pressure is insufficient. Oil cannot reach the guide post

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