Bending machine hydraulic synchronous system controlled by flow distributing and collecting valve

Abstract

The invention provides a bending machine hydraulic synchronous system controlled by a flow distributing and collecting valve. The bending machine hydraulic synchronous system comprises an oil tank, a filter, a hydraulic pump, a motor, a one-way valve, a pilot-operated overflow valve, a two-position two-way solenoid directional valve, a three-position four-way solenoid directional valve, the flow distributing and collecting valve, a one-way speed regulating valve and hydraulic cylinders. When the hydraulic cylinders of the bending machine are in a pressing fast-feeding state or a pressing work-feeding state, after 2DT power-on pull-in, the left position of the three-position four-way solenoid directional valve is connected, under the action of the hydraulic pump, hydraulic oil enters the flow distributing and collecting valve through the one-way valve and the three-position four-way solenoid directional valve and enters rodless cavities of the hydraulic cylinders with flow equally divided. When the hydraulic cylinders are in a fast return stroke state, after 3DT power-on pull-in, the right position of the three-position four-way solenoid directional valve is connected, and the hydraulic oil in the rodless cavities enters the flow distributing and collecting valve and flows back to the oil tank through a flow collecting valve in an equal flow mode. Flow distributing and collecting functions are respectively achieved in the two directions of an oil path of the hydraulic system of the bending machine, so that synchronous operation of the two hydraulic cylinders in the work-feeding state or the return stroke state is effectively ensured, and synchronization precision is high.

Description

technical field [0001] The invention relates to a hydraulic synchronous system of a bending machine, in particular to a hydraulic synchronous system of a bending machine controlled by a diverting and collecting valve, and belongs to the technical field of mechanical production control. Background technique [0002] With the continuous improvement of the control requirements for the hydraulic system of the bending machine, the original hydraulic control technology can no longer meet the needs of modern production. During the working process of the bending machine, its hydraulic system completes the following main actions: hydraulic cylinder press down fast forward, press down work forward, hold pressure, fast return and stop at any point. At any stage, in order to ensure the smooth operation of the tool, it is necessary to require the hydraulic cylinders at both ends of the tool to keep moving synchronously. If the two ends of the tool are not synchronized during the bendin...

AI Technical Summary

Problems solved by technology

If the two ends of the tool are not synchronized during the bending process of the bending machine, it will cause the vibration of the hydraulic system and the increase of the processing error.

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