Vuototecnica Vacuum Solutions - 7
Perfect and fast pallets thanks to Octopus
Vacuum in front line with GV 1-2-3 vacuum generators
Vuototecnica mini depressors and depression gripping system for ski maintenance
Cleaning and high safety standards thanks to Vuototecnica adjustable vacuum generator conveyor PVR25
3-way servo operated solenoid valves for vacuum:
|We have witnessed a growing demand for solenoid valves by automation manufacturers in the packaging industry in recent years. But this demand is not always satisfied in the right way.
Thanks to the strength of over thirty years of experience in the field of vacuum and to a growing attention to research and customers’ practical needs, Vuototecnica wanted to conceive a solution that would be effective and at the same time fast; and so, designed a series of 3-way servo operated solenoid valves, at high-speed operation, for flow rates up to 600 mc/h (code 070913).
The use of these solenoid valves is critical for intercepting vacuum on power supplies and palletizers with suction cups, vacuum thermoforming machines, vacuum packaging machines, slotter for cardboard, bag opener, and in all cases where it is necessary to quickly switch between the aspiration of vacuum pump and the air inlet in the circuit, for a fast restoration of the atmospheric pressure, depending on the application needs.
|Those working in the chamber vacuum packaging sector understand the importance of suction flow rate, which can only be ensured by real opening diameter of the vacuum solenoid valves.
Thanks to a careful design of the internal mechanism, Vuototecnica 3-way servo operated solenoid valves ensure exceptionally low response times, almost negligible pressure drop, compact construction compared to large connections and minimum power consumption for their operation.
In fact, they can be equipped with low consumption piloting electric coil (2 watts), which of course is common and standard for the market of valves for compressed air, but not for the solenoid valves used for vacuum management where piloting solenoids from 14 watts of power still predominate.
For this reason, Vuototecnica solenoid valves offer energy-saving and PLC easier management.
Vuototecnica solenoid valves are all created from solid aluminum, so as to eliminate the minimum probability of loss; which is instead notoriously found on valve bodies derived from metal die casting or from plastic molding due to micro cracks or blowholes during production.
Vuototecnica stands out for constructive attention, to make long-lasting components and exalt its functionality:
• Sealing on the abutment seats is ensured by two conical molded Vulkollan® shutters, at high mechanical strength.
• Stainless steel hexagonal stem/spool able to withstand the higher stresses from piloting overpressure and chemicals in the carried media.
• Contrast spring and stainless steel shot-peened return.
• Polyurethane canvas piloting membrane, ensuring a long life compared to actual stem/spool runs.
• All internal components can be inspected and are easy to maintain.
Solenoid valves can be used normally open or closed, simply by changing the position of intake pipe connection and without affecting components of internal mechanics: such as springs or membranes.
In addition, evidence of the design effort, to maximize operational efficiency, all Vuototecnica 3-way servo operated solenoid valves can manage a pressing counter blow on the third discharge way; both in the normally closed and in the normally open configuration.
This is an operation which is very appreciated by end-users, when there is a need to speed up grip and release machine cycles with suction cups or for easy cleaning suction pipes, especially in dusty environments.
Multi-function modular vacuum generator: flexibility has never been easier
Today, robotics industry requires devices with excellent performance and several vacuum outlets for the self-enslavement of additional utilities. Given the new design standard, light weight and size are critical. So, how to meet quality with practical needs?
Vuototecnica created GVMM multi-function modular vacuum generators, produced for MI intermediate module assembly, with the simple use of screws, without external manifolds. What makes these generators unique is their modular use. You can hardly find this flexibility in other products; this flexibility allows you to serve several utilities due to independent vacuum outlets, changing almost nothing.
You can choose vacuum units number, requiring multi-function vacuum generator and the intermediate modules, in selected number and flow rates, already assembled together; or you can assemble one or more intermediate GVMM_01modules on GVMM, already installed on the automatism. GVMM can be easily inspected and opened for carefree maintenance, from distributor intake filter; in addition, they can be installed everywhere.|
They have a great suction capacity and allow a high saving of compressed air. The generator, in fact, creates vacuum only when you need it, thanks to the activation of compressed air supply micro solenoid valve. When the vacuum value reaches the preset maximum, the vacuum switch operates on the electric coil of the solenoid valve to stop the supply; it is restored only when the degree of vacuum falls below the minimum safety value. You can also use a second signal from the vacuum switch, independently from the first, to start the cycle when the vacuum degree is suitable for the application. In absence of supply, a check valve is integrated for the maintenance of vacuum degree in the circuit. GVMM vacuum generators and MI modules, are all equipped with a screw regulator for dispensing ejector compressed air.
They are available with a minimum flow of 3 mc/h, a maximum flow of 14 mc/h and a maximum achievable vacuum level of -85 kPa. On request, there is a set of cables with integrated Energy Saving device, for connecting the vacuum switch and micro solenoid valves.
Grip without equal: Vuototecnica flat round foam rubber suction cups
|In this video you can see Vuototecnica flat round Geranium foam rubber suction cups in action on insulated sandwich panels. You will certainly be impressed by their grip: they are able to support the weight of two workers standing on the panels.
The secret of a such grip is in the special foam rubber compound, called Geranium, abbreviation OF, which has a density such as to permit the gripping also on very uneven and rough surfaces. The advantage is that these suction cups retain their own elasticity even after many work cycles.
In addition to insulating panels handling, they are ideal for vacuum gripping on very rough surfaces, such as rough concrete, sawn marbles, textured or non-slip and corrugated sheets, striatum plexiglas and many other materials.
When the load to be handled has oiled and irregular surfaces, it is necessary to employ neoprene foam rubber suction cups, abbreviation NF, able to withstand the corrosive action of oils.
To allow rapid fixing at their supports, all foam rubber suction cups are equipped with a self-adhesive side. To replace them, it will be enough to require only adhesive foam rubber suction cup in your favorite compound, changing nothing.
These suction cups can withstand minimum temperatures of -40 °C (-20°C for NF neoprene foam rubber) and up to +80 °C.
The strength of a tornado, cleaning at work
For transferring granules, powders, metal chips, liquid and dry food, sawdust and other materials that could annoy gripping and handling operations, Vuototecnica conceived a simple solution, maintenance free.
Vacuum Jet flow generators were created for this purpose, and they not only allow the transfer of products of different nature, they enable the aspiration of fumes, water and oil condensation, coolants mist and other elements that could annoy the operating cycle.
These flow generators, powered exclusively by compressed air, can be used in environments with danger of fire or explosion. The absence of moving parts allows continuous use without heat generation. What makes them really special is that they don’t need any maintenance, a good filtration of compressed air is enough to completely forget them.|
But how do these little gems work?
The compressed air, blown into an annular chamber, which is concentric to the device, flows, at very high speed, towards the center of the main pipe, creating a cyclonic effect.
The cyclonic effect has the property to create a depression inside the device and to induce a large volume of air toward the exit. By varying the feeding air pressure, consequently, vary depression and intake air amount.
They are available in various sizes, with minimum suction flow of 12mc/h up to 405 mc/h and with a minimum flow rate of blowing of 17 mc/h up to 525 mc/h, the maximum achievable vacuum level is equal to –20 KPa.
Vuototecnica Octopus, multi-chamber version: extensive customization options
|Several issues have been resolved, on the need for palletizing and de-palletizing in a lot of industries, since Vuototecnica Octopus vacuum gripping systems range is in production.
You can stack or unstack boxes, bags, packs, with Octopus, ensuring the grip of cardboard interlayer and wooden pallets. A solution that assures you the grip, in total safety, even when the object gripping surface only occupies 5% of suction plan. And all that without having to reposition suction cups every time.
Octopus basic systems are composed of a vacuum generator powered by compressed air; a box in anodized aluminum; a microfine filter, easy to inspect, on the intake to protect the generator; a suction plate, that you can choose from a very wide range of solutions and which adapts to any surface – smooth, rough or uneven.
Octopus major benefit is that it can operate vertically, horizontally, inclined or even upside down respect to objects gripping surface.
In addition there are lots of accessories and components: spongy gums, suction cups, shut-off valves, suction plates with micro-calibrated and self-cleaning holes, which are also suitable for dusty environments.
Vuototecnica is able to provide maximum customization. Special versions of Octopus gripping systems are a prime example.
Octopus multi-chamber version, for example, allows palletizer robots on which it is mounted, taking and storage of different types of boxes, to compose pallets with different layers and provide maximum flexibility to the end customer.
You can get a similar result with a remote electric pump as vacuum source, and its distribution through servo-operated solenoid valves (07 … 11 series) located on each chamber.
The chamber can be equipped with shut-off valves to concentrate vacuum degree only on suction cups which are in real contact with boxes to be palletized, avoiding unnecessary wastage and ensuring maximum efficiency.
Vuototecnica mini cup holders are compact and lightweight
Robots for the discharge of molded parts from plastics printing presses need reduced in size and very lightweight handling solutions.
To meet this demand, Vuototecnica designed a range of mini cup holders that stand out for firmness and lightweight, ideal for very small suction cups but, in proportion, with the same performance of larger series.
These cup holders can be mounted to suction cups which have a maximum diameter of 60 mm – traditional or bellows cups, in different compounds – and they are composed of: a spring, to cushion the impact of the cup and at the same time to maintain a constant pressure on the load to be lifted, and a quick connector for connection to the suction pipe.
Vuototecnica mini cup holders are easy to assemble to the automatisms and they have several types of connection to vacuum (axial or radial), depending on the needs.
In addition to the version for suction cups with support,, with brass stem, are available:
• with recessed spring and anodized aluminum fixing stem, suitable for suction cups with male threaded support. In this case, the particular shape of the brass sleeve, for the fastening to the machine, prevent stem rotation and suction cup rotation, in consequence;
• with short stroke which, along with a special shape, allow even a smaller footprint and a lower weight than other products in the range; and this makes them particularly suitable for small suction cups with diameters between 10 and 30 mm.