Introduction and working principle of single-column hydraulic press machine

●Introduction:

Single-column hydraulic press with a C-type single-arm structure:

⒈Using submerged arc welding, vibration treatment after welding to ensure that the body is not deformed.

⒉The body adopts QT450 ductile cast iron, high-temperature treatment, stress relief annealing, normalizing, natural aging treatment, etc. to eliminate internal stress, ensure the performance of cast iron, and prevent deformation and destruction of castings.

This series of presses are equipped with independent hydraulic and electrical control systems, using buttons for centralized control, which can realize two molding processes of fixed stroke and fixed pressure, with pressure display, stroke, and pressure adjustment functions. Also, this series is equipped with four-post guide pillars to improve product accuracy. The columns and piston rods are plated with copper and hard chromium after quenching to ensure surface wear resistance and high toughness. The oil pump inlet is equipped with a unique filter. Device to ensure the service life of the oil pump and valve. The oil connection adopts an imported high-pressure hose, which greatly reduces machine noise. In addition, advanced components such as imported PLC, grating protection, and man-machine interface (touch screen) can be configured according to user requirements. For the special requirements of customers, we can specially design and produce to meet customer production process requirements to the greatest extent.

●Features

⒈It has the characteristics of good structural rigidity, good guiding performance, and fast speed.

⒉The convenient manual adjustment mechanism can adjust the indenter or the upper worktable to press at any position in the stroke, and can also adjust the length of fast forward and work progress arbitrarily within the design stroke.

⒊The integrally welded solid open structure keeps the body rigid enough while having the most convenient operating space.

⒋The integral casting of the fuselage has the advantages of strong resistance to deformation, high working accuracy, and long service life, which is suitable for products with higher requirements.

●Scope of application:

The single-column correcting and pressing hydraulic press is a multi-functional medium and small hydraulic press, suitable for the correction of shaft parts and profiles and the pressing of shaft sleeve parts. At the same time, it can also complete the bending, embossing, sleeve forming, stretching of simple parts of sheet parts, and it can also be used to suppress powder and plastic products with less stringent requirements. This series of products are suitable for use in machine tools, internal combustion engines, textile machinery, shafts, bearings, washing machines, automotive motors, air-conditioning motors, electrical appliances, military enterprises, and assembly lines of foreign-funded enterprises.

●Working principle:

A hydraulic press is a device that uses liquid to transmit pressure. When the liquid transmits pressure in a closed container, it follows Pascal's law.

The hydraulic transmission system of the hydraulic press is composed of power mechanism, control mechanism, executive mechanism, auxiliary mechanism and working medium.

Power mechanism Usually an oil pump is used as the power mechanism, generally a positive displacement oil pump. In order to meet the requirements of the moving speed of the actuator, one oil pump or multiple oil pumps are selected. Gear pump for low pressure; vane pump for medium pressure; plunger pump for high pressure.

Hydraulic machines usually refer to hydraulic pumps and hydraulic motors. Both hydraulic pumps and hydraulic motors are energy conversion devices in the hydraulic system. The difference is that the hydraulic pump converts the mechanical energy of the driving motor into the pressure energy of the oil, which is the power device in the hydraulic system. The hydraulic motor converts the pressure energy of the oil into mechanical energy and is the actuator in the hydraulic system.

The hydraulic pumps and hydraulic motors commonly used in hydraulic systems are both positive displacement, and their working principle is to use the change of the sealed volume to suck and press the oil. In terms of working principle, most hydraulic pumps and hydraulic motors are reciprocal, that is, when pressure oil is input, the hydraulic pump becomes a hydraulic motor, which can output speed and torque, but in terms of structure, hydraulic pumps and hydraulic motors are still Some differences.

The single-column hydraulic press has an independent power mechanism and electrical system. It adopts button centralized control. It can adjust the working pressure, pressing speed of the machine, manual and semi-automatic, and the stroke and range of no-load fast down and deceleration. The process needs to be adjusted, and the ejection process can be completed. There are three process methods: ejection process and stretching process. Each process is a fixed pressure and fixed process for selection. The fixed pressure forming process has an Ejection delay and automatic return. The single-column hydraulic press has a wide range of versatility and is suitable for the processing and forming of various plastic materials, such as extrusion, bending, hemming, stretching, etc. At the same time, the hydraulic press can also be used for the compression forming of various plastics and powder products. In addition, the single-column hydraulic press can also be used for product correction, pressing, and shaping.