HWP-SMH-30 Hydraulic Press For Various Processing

The hydraulic workshop press with servomechanical handwheel for cylinder adjustment, SMH model, is particularly suitable for carrying out sheet metal straightening work, for inserting bushings or metal inserts.

The descent and ascent of the cylinder are managed by a handwheel operated with a servomechanism, which allows the position of the cylinder to be adjusted to the hundredth of a millimetre, thus guaranteeing absolute precision.
The cylinder stroke is 350mm and exerts a maximum pressure of 270 bar. Since the approach speed of the cylinder is equal to or less than 10 mm/sec, this allows the use of the electro-hydraulic press with only one hand by the operator.

The platform is mobile and its height movement takes place through the use of the main cylinder, thus facilitating the operations of tooling and pressing of the sheet metal.

The hydraulic workshop press with servomechanical handwheel is also available in the version with transversal mobile cylinder, which, with the aid of a handwheel, allows the main cylinder to be moved transversally. This solution therefore allows you to always work in the center of the cylinder axis, thus avoiding processes that could damage the hydraulic press.
The correct positioning and locking of the cylinder in the desired position are guaranteed by a specially designed system.

The frame of the SMH hydraulic workshop press is made with a highly rigid electro-welded steel carpentry structure, specifically designed to guarantee maximum sturdiness and stability.

Accessories:

• Cylinder rod anti-rotation system
• Support plates
• Pair of V-shaped prisms

Maximum Pressure Valve

As a safety measure to guarantee the operator's safety and to safeguard the machine, a maximum pressure valve is installed inside the hydraulic control unit on all hydraulic presses produced by LIVAMACH.

The maximum pressure valve has the function of regulating the maximum pressure in the hydraulic circuit.

It is used to protect the pump and the other components of the system from excessive pressure and therefore to keep the level inside the hydraulic circuit constant.

It is a normally closed valve capable of opening when a predetermined pressure is reached and discharging the flow rate necessary to keep the circuit pressurized.

In fact, in the event of a malfunction of the hydraulic circuit, this safety valve prevents an excessive quantity of oil from reaching the cylinder, thus preventing the risk of overpressure.

Metal Blocks

All hydraulic workshop presses that have a moving floor are equipped with metal blocks as a safety measure.

These metal blocks are positioned at the bottom end of the press and are completely welded to the machine structure.

Their function is to protect the operator's feet from any accidental fall of the work table.

In fact, these mechanical blocks prevent the work table from touching the lower part of the table and thus leave a safety space for the user's feet, preventing them from being crushed.

Anchoring Electrical Cables

The tubes for the passage of the electrical cables are anchored to the press frame by means of special collars.

Unlike many competitors who use simple plastic ties that are destined to dry out and break quickly, these collars are made of highly resistant material and are screwed to the structure of the press.

Anchoring Hydraulic Pipes

As a safety measure, the hydraulic hoses of all the presses produced by LIVAMACH are firmly fixed to the machine frame using special collars which prevent any movement of the hydraulic hose.

These collars have the base welded to the frame, while the upper part is screwed.

Stopflex Anchor

All the presses produced by LIVAMACH include safety systems for anchoring the hydraulic pipes.

In fact, the force released by a flexible hose under pressure, in the event of the fitting slipping out, would be very dangerous for things or people nearby.

It is for this reason that the hydraulic tubes of all the presses produced by LIVAMACH are fixed using the Stopflex retention system, which was designed to stop the stroke of the pulled tube and prevent the force released inside it from triggering a fearful " whip effect” and at the same time flood the working environment with hydraulic oil.

Thanks to this system, in fact, the flexible hose is anchored to the system via a rope, thus guaranteeing full protection of the operators and the protection of the press and the workshop.

Anti-Fall and Anti-Explosion Valves

As a safety measure to guarantee the safety of the operator and to safeguard the machine, anti-fall and anti-explosion safety valves are installed on all hydraulic molding presses produced by LIVAMACH.

The anti-fall valve (1) has the function of keeping the hydraulic cylinder under pressure in the event that the hydraulic hose slips out. In this way, the cylinder, despite the weight of the upper platform connected to it, would remain stationary in its position and would not fall downwards, thus avoiding injuring the user.

As a further form of safety, the anti-explosion valve (2) is installed, which comes into operation in the event that the anti-fall valve jams.

The function of the anti-burst valve is to drain the hydraulic oil from the cylinder if the pressure rises beyond the permitted limit and therefore prevents the cylinder itself from bursting.

Both valves are from the famous Rexroth brand which is recognized globally for its high quality and extreme reliability products.

Current Transformer

The press works with a three-phase electrical system with a 400V power supply.

As a safety measure there is a transformer inside the electrical panel which reduces the current from 400V up to 24V, that is, up to a voltage that is not dangerous for human health.

In fact, in the event of a system malfunction, the current could propagate to the electrical panel, with the risk that the operator could suffer an electric shock when he presses one of the buttons on it.

Pair of V-Shaped Prisms

The pair of V-shaped prisms has the function of supporting the metal piece to be worked and is fixed to the work surface of the hydraulic press.

They are usually used for straightening and bending of tubes, rods or metal profiles within mechanical workshops.

The V-shaped prisms are made of painted raw iron and are milled at the support point.

Stem Anti-Rotation Device

The anti-rotation device of the cylinder rod is a safety system which prevents twisting of the rod and therefore serves to keep any molds fixed to the cylinder in line.

This system is a sort of metal jaw with two holes: the stem is inserted inside the larger hole, while the guide rod slides through the smaller hole.

Metal Support Plate

The metal work support plate is used to comfortably position the piece that needs to be machined.

It is positioned on the platform of the hydraulic press and is supplied with mechanical fixing blocks.

It is available in various sizes depending on the tonnage and dimensions of the workshop press on which it must be installed.

This support plate is characterized by its high thickness, which guarantees excellent resistance to the strong pressure exerted by the cylinder during the pressing phases and therefore prevents the plate itself from deforming.

Cylinder Movement with Lever and Handwheel

The hydraulic workshop press, PSV model, can be equipped with the double control with lever and handwheel for cylinder adjustment.

Through the use of the lever, the cylinder descends at a speed below 10 mm/sec and therefore allows a rapid approach of the piston to the material that must be pressed.

When the cylinder is close to the piece to be worked, the operator can use the handwheel which allows an extremely controlled descent of the piston and this allows absolutely precise machining.