CACCIA ENGINEERING S.r.l. have been manufacturing rotational moulding machines for more than 50 years and boast the sale of hundreds of machines with a very large range of models and dimensions.
The actual range of rotational moulding machines produced by CACCIA Engineering has three typologies of sure success:
• “Carousel” ROTAUT machines with independent arms and with spherical diameters up to 6 meters
• “Shuttle” ROTOBOX machines with spherical diameters up to 4,5 meters
• “Shuttle“ ROTOSWING machines with spherical diameters up to 3,5 meters
CACCIA Engineering S.r.l. have always improved the quality and the performances of his machines, adapting them to the always numerous needs of the customers, stimulating the abilities of his technical staff to realize interesting innovations also recommending each project experience positively made through all these years of activity.
CACCIA Engineering S.r.l. can say with pride to have given a great contribution to the evolution of the rotational moulding technology, especially in Italy over than on all worldwide market.
Currently CACCIA Engineering S.r.l. produce around 25/30 machines per year, shared between each machine typology.
The average dimensions of the requested and produced machines with spherical diameter among 2500 and 3500 mm, but the tendency of the market is going towards to greater machines up to 6000 mm. that is with available volumes for the moulds around 35.000 litres.
The general characteristics of CACCIA Engineering S.r.l. machines are well described on our catalogues as well as on our revised internet web site.
Here below we just want to put in prominence some technical innovations realized on the machines of new generation with the main purpose to reduce moulding times and energetic consumptions and to increase the productivity of the machines.
These are in general the principal innovations:
1) On machines ROTAUT up to 3,5 meters the geometric shape of the oven has been reduced
From the trapezoidal shape, we passed to a hexagonal winding one that, with the application of opening / closing folding doors, has reduced of around 30% the volume of air to heat.
The result has been the reduction of around the 30% of the fuel consumption to heat the air circulating in the same oven, further to a real reduction of the total overall dimension of the machine.
2) Reduction of times of opening / closing oven doors
The structure of the doors (and of the oven) has been realized with sandwich panels in galvanized steel and layered with high-density mineral wool (140 kg/m³).
The weight of the doors has been reduced of around 30% increasing the factor of thermal insulation.
The handling of the doors is of a new conception, controlled by a new hydraulic command that has allowed getting a reduction of the opening / closing times of around 40%, in comparison to the traditional handlings.
Consequently, it results a higher availability of moulding cycles / hour in the oven, further to lower energy consumption for the recovery of the set moulding temperature.
3 ) Reduction of carriages and arms translation
The diameter of the carousel circular base has been reduced in the least possible terms, with a consequent reduction of the necessary time for the translation of each carriage from one station to another one.
In the software program has been also inserted the possibility to simultaneously handle two or more carriages to increase the availability in the oven.
Practically, reducing the waiting time of the oven with the doors opened, there is a rapid recovery of the moulding temperature in the oven with lower fuel consumption.
4) Automatic moulds positioning
Another factor that engraves on the productivity of the machine is the time in which the operators have to search the best position to open the moulds and to extract the manufactured article in the unloading / loading station.
It has been therefore introduced a pre-arranged automatic positioning, in order to guarantee a meaningful reduction of the times of moulds manipulation.
In phase of set-up, it is possible to predetermine, for each arm, the best 10 angular positions (5 on the primary and 5 on the secondary one) to guarantee to the operator the “ideal” job position.
All thissimply acting from the pulpit in a sequential way and with a simple selector.
5 ) Introduction of digital burner
On all roto moulding machines up to mm. 3500 sizes have been applied a digital burner of primary worldwide brand, which use the most modern technique with microprocessor for the setting, the control and the overseeing of all functions. This new model of burner includes:
a) Device of special mixing with recycle of internal gas, for the reduction of the issues of harmful substances in atmosphere
b) Control of integrated seal
c) Insulated aspiration vain air
The supervision system of the digital burner foresees therefore:
- Visualization flame length
– Angle opening of the butterflies valves gas / air
– Diagnostic of the components’ state assembled on the burner
– Recording of the last 6 recent alarms
– Remote supervision of the burner conditions by modem connection
6) New process parameters :
A) Possibility of automatic compensation of the first moulding cycle with cold start.
B) Possibility to set the clockwise / anticlockwise rotation speed of the arms with different values in the moulding and in the cooling zones.
C) Setting of moulding cycle up to three cooking to get pieces with single wall or sandwich with walls of the same colour, or still sandwich with walls of different colours.
D) Possibility to work with four steps of different temperatures for each moulding cycle.
All the above innovations can be illustrated in detailed by CACCIA Engineering factory located in SAMARATE (VA), not very far from International MALPENSA airport and where can be viewed machines under construction and pre assembling.