The hydraulic press classification and component parts
According to function points: thin plate stretch series; Four-column series, double moving series, car interior trim series, body shell series, single column series, straightening series, rapid die forging series, etc. According to the pressure, from 100kg to tens of thousands of tons of pressure All hydraulic presses have: fuselage, oil cylinder, hydraulic station, piping system, electrical system. Perishable location: oil cylinder sealing ring, oil pump (valve), electrical component, etc.
Basic principle is the oil pump of the hydraulic oil to the integrated cartridge valve blocks, through the check valve and relief valve assigned to the cylinder of the hydraulic oil cavity or inferior vena, under the action of high pressure oil, make the oil cylinder movement. Hydraulic press is using liquid to transfer pressure equipment. The liquid passes the pressure in a sealed container following PASCAL's law. Hydraulic transmission system of four-column hydraulic press is composed of dynamic mechanism, control mechanism, actuator, auxiliary mechanism and working medium. Powerhouses usually use oil pumps as powerhouses, generally as an integrated oil pump. To meet the requirements of the actuator's movement speed, use a pump or oil pump. Low pressure (oil pressure less than 2.5 MP) with gear pump; Medium pressure (oil pressure less than 6.3 MP) with a vane pump; High pressure (oil pressure is less than 32.0 MP) with plunger pump. The pressure of all kinds of plastic materials processing and forming, such as plate extrusion, bending, deep drawing of stainless steel and metal parts, cold pressing forming at the same time can also be used in powder products, grinding wheel, bakelite, suppression of thermosetting resin products.
(5) according to equipment applications, hydraulic equipment can be divided into many types, such as machine tool hydraulic equipment, plastic molding processing hydraulic equipment, engineering machinery hydraulic equipment, hydraulic equipment, steel metallurgy building material processing hydraulic equipment, etc. A hydraulic machine is a liquid working medium, which is used to transfer energy according to PASCAL's principle to achieve all kinds of technological processes. The hydraulic press is composed of three parts, the machine, the power system and the hydraulic control system. The hydraulic press category has valve hydraulic press, liquid hydraulic press, hydraulic press. How hydraulic presses work: The area of the large and small plunger is S2, S1, and the force on the plunger is F2, F1. According to PASCAL's principle, the pressure of the closed fluid is the same, that is, F2 / S2 = F1 / S1 = p; F2 = F1 (S2 / S1). Said hydraulic pressure gain function, as well as mechanical gain, force increased, but the work does not gain, so the movement of the plunger distance is small piston movement distance of S1 / S times.
The hydraulic press classification and component parts
