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.
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.
CE Certificate of Conformity, Annex IV
The CE certificate of conformity, Annex IV, certifies that the hydraulic presses satisfy all the safety parameters required by current European regulations.
This certificate is issued by a specific external body which verifies that a specific model of hydraulic press complies with the safety requirements established by the regulations.
This certificate is mandatory for models of electro-hydraulic molding presses whose approach speed of the hydraulic cylinder exceeds 30 mm/sec.
Milled Platform with T-slots
The milled platform with T-slots allows quick fixing of the molds.
The dimensions, as well as the depth and geometry of the grooves, are completely customizable upon customer request.
Fixed Protection Nets
Fixed protective nets are essential components in hydraulic presses, ensuring the safety of operators.
These sturdy nets are made of aluminum and surround the working area of the hydraulic press.
Their main function is to prevent unauthorized or inadvertent access to the pressing area, minimizing the risk of serious injury.
Four Slide Guides
The four self-lubricating sliding guides are placed in the corners of the upper mobile surface and allow correct descent of the work surface and precise execution of the molding operations.
They are mounted as standard on hydraulic molding presses with high approach speed and on PST and PCL models starting from 300 tons. On these latest models, it is possible to install the four self-lubricating sliding guides as accessories also for the 40 to 200 ton versions.
Air/oil Heat Exchanger
The air/oil heat exchanger is used to cool hydraulic circuit of the press and uses ambient air as a cooling source, which is conveyed onto the circuit via a fan.
It serves to prevent overheating of the hydraulic circuit and to maintain a constant oil temperature, thus avoiding damage to the hydraulic system and seals.
It is a particularly recommended accessory when the press needs to work continuously or for long production cycles.
When we install the heat exchanger we also mount the decompression valve to safeguard the cooling system.
On large tonnage presses we also mount the exchanger with recirculation and separate motor, for greater cooling effectiveness.
Pressure Switch
The pressure switch is a sensor that monitors the pressure of the hydraulic fluid within the system.
Its main function is the regulation of the maximum working pressure, based on the preset calibration, thus optimizing the operation of the hydraulic press based on the processes that need to be performed.
In the automatic version of the presses, it allows the automatic lifting of the hydraulic cylinder when the calibration pressure is reached.
Cylinder Limit Switches
Cylinder limit switches are sensors that monitor and report the extreme position of the cylinder during its movement. Their function is to ensure accurate and safe control of the pressing process.
As the cylinder approaches its final position, end-of-stroke sensors detect the stopping point and send a signal to the press control system. This signal can be used to stop cylinder movement, avoiding overpressure or material or machine damage. Additionally, sensors can be configured to automatically initiate the return of the cylinder to its home position, contributing to process efficiency.