CN102950804A - High-speed punch hydraulic system connection method capable of realizing fast direction change - Google Patents

Abstract

The invention discloses a high-speed punch hydraulic system connection method capable of realizing fast direction change. Firstly, with plunger pumps in a hydraulic system as a center, a motor and an air filter are respectively arranged on both sides of the peripheral oil circuit of the plunger pumps, and a valve subsystem which comprises an electromagnetic reversing valve, a check valve, an overflow valve, an energy accumulator and a proportional servo valve is arranged in the peripheral oil circuit area between the plunger pumps; differential connection is adopted, a hydraulically operated reversing valve is added in the oil circuit between the periphery of a hydraulic cylinder and the plunger pumps, the hydraulic cylinder rapidly goes down to get close to a workpiece, differential connection is cut off when the hydraulically operated reversing valve is adjudged adjusted to change direction, and a punch is driven by the hydraulic cylinder to perform slow punching, i.e. the feeding process. The high-speed punch hydraulic system connection method has the advantages that: the system can stably move, the speed of the system can be easily regulated, moreover, the travel of the system can be controlled, noise is reduced, the punching frequency is increased, and the service life is prolonged; meanwhile, the controllability of operation can be enhanced, and labor intensity can be decreased.

Description

A kind of High Speed Punch Hydraulic System method of attachment that realizes quick commutation

Technical field

The present invention relates to the hydraulic technique field, relate in particular to a kind of fast High Speed Punch Hydraulic System method of attachment of commutation that realizes.

Background technology

Hydraulic system has that power is large, operating pressure and the flow adjustability is good, heat can be brought back the advantages such as fuel tank, adopt hydraulic system to produce more power than other devices, under equal power, the volume of hydraulic means is little, lightweight, power density large, compact conformation.Development along with modern automobile industry, electronic technology and national defense industry, market is increasing to the demand of pressing equipment especially high speed stamping equipment, stamping technology is one of stress metal processing method that is widely used at present, so the advanced increasing stamping technology that adopts of country of industry replaces cutting technology and other process technologies.Advanced pressing equipment is the prerequisite of stamping technology development, current its stamping system of pressing equipment mainly contains two kinds of mechanical type and fluid pressure types, mechanical type mainly contains crank press, it will rotatablely move by slider-crank mechanism and change reciprocating motion into, and slider-crank mechanism mainly is comprised of parts such as bent axle, connecting rod and slide blocks.But the hydraulic system assembly of existing this product exists a lot of problems from method of operating, working method, numerous and diverse different angles such as structure, and this causes, and work poor efficiency, weight of equipment are heavier, high expensive.

Summary of the invention

The purpose of this invention is to provide and a kind ofly be conducive to convenient processing and manufacture, can make steadily easily speed governing and stroke is controlled, can enhance productivity, be suitable for multiple Sheet Metal Forming Technology, reducing noise, punching press frequency improve, possess the auxiliary fast High Speed Punch Hydraulic System method of attachment of commutation that realizes that improves the equipment operation ability of system motion, to solve many deficiencies of prior art.

Purpose of the present invention is come specific implementation by the following technical programs:

A kind of High Speed Punch Hydraulic System method of attachment that realizes quick commutation mainly is comprised of following:

⑴ at first, centered by the plunger displacement pump in hydraulic system, in its peripheral oil circuit both sides motor, air filter are set respectively, valve subsystem that is formed by solenoid directional control valve, check valve, overflow valve, accumulator and proportional servo valve of peripheral oil circuit region division between plunger displacement pump;

⑵ adopted differential connection then, and the oil circuit between hydraulic cylinder periphery and plunger displacement pump is set up a hydraulicchange-over valve, this hydraulic cylinder fast-descending is near workpiece, when regulating the hydraulicchange-over valve commutation, differential connection is cut off, and hydraulic cylinder drives drift and realizes at a slow speed punching press, and namely the worker advances process;

⑶ proportioning valve commutates along with the variation of input voltage, solenoid directional control valve and check valve series connection are formed direction control circuit in the valve subsystem, the direction control circuit overflow valve that has been connected in parallel therewith, the two ends of proportional servo valve are then directly accessed in the peripheral oil circuit of hydraulic cylinder.

The beneficial effect of the High Speed Punch Hydraulic System method of attachment of quick commutation of realizing of the present invention is: be conducive to convenient processing and manufacture, steadily easily speed governing and stroke are controlled can to make system motion, reducing noise, punching press frequency improve, be conducive to improve the machine movement precision, can increase the service life; Simultaneously, be conducive to adapt to the demand of transportation, installation, accent frame, can improve the operation controllability, reduce labour intensity.

The specific embodiment

The described High Speed Punch Hydraulic System method of attachment that realizes quick commutation of the embodiment of the invention, its key step comprises:

⑴ at first, centered by the plunger displacement pump in hydraulic system, in its peripheral oil circuit both sides motor, air filter are set respectively, valve subsystem that is formed by solenoid directional control valve, check valve, overflow valve, accumulator and proportional servo valve of peripheral oil circuit region division between plunger displacement pump;

⑵ adopted differential connection then, and the oil circuit between hydraulic cylinder periphery and plunger displacement pump is set up a hydraulicchange-over valve, this hydraulic cylinder fast-descending is near workpiece, when regulating the hydraulicchange-over valve commutation, differential connection is cut off, and hydraulic cylinder drives drift and realizes at a slow speed punching press, and namely the worker advances process;

⑶ proportioning valve commutates along with the variation of input voltage, solenoid directional control valve and check valve series connection are formed direction control circuit in the valve subsystem, the direction control circuit overflow valve that has been connected in parallel therewith, the two ends of proportional servo valve are then directly accessed in the peripheral oil circuit of hydraulic cylinder.

Claims (1)

1. can realize the fast High Speed Punch Hydraulic System method of attachment of commutation for one kind, it is characterized in that, mainly be formed by following steps:

⑴ at first, centered by the plunger displacement pump in hydraulic system, in its peripheral oil circuit both sides motor, air filter are set respectively, valve subsystem that is formed by solenoid directional control valve, check valve, overflow valve, accumulator and proportional servo valve of peripheral oil circuit region division between plunger displacement pump;

⑵ adopted differential connection then, and the oil circuit between hydraulic cylinder periphery and plunger displacement pump is set up a hydraulicchange-over valve, this hydraulic cylinder fast-descending is near workpiece, when regulating the hydraulicchange-over valve commutation, differential connection is cut off, and hydraulic cylinder drives drift and realizes at a slow speed punching press, and namely the worker advances process;

⑶ proportioning valve commutates along with the variation of input voltage, solenoid directional control valve and check valve series connection are formed direction control circuit in the valve subsystem, the direction control circuit overflow valve that has been connected in parallel therewith, the two ends of proportional servo valve are then directly accessed in the peripheral oil circuit of hydraulic cylinder.