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Presma, en Plast 2009Hall 22, stand B05
Presma, Plast 2009
February 5, 2009
Specializing in the manufacture of machines injectors, the company
Presma, on the occasion of the Italian fair Plast 2009, presents an automated working island for the production of screwdrivers with thermoplastic injected in a combination of four polypropylene and elastomers handles in different colors. The plant consists of two units of double injection, equipped with casts of four cavities, a camcorder control station, a station of cooling and an anthropomorphic robot six-axis to load the inserts, to move the injected parts from one station to another and for the download of the finished parts.
The main advantage of using this type of work Islands (that allow to manufacture products bearing a central body in rigid material with large thickness and different coatings more slender) is able to remove the 'unproductive' time of cooling of the total cycle timeensuring a very high productivity rate. The injected parts are left to cool in the stations of cooling (with air and not with water) for a number of appropriate cycles before being super-inyectadas.
Machines injectors considered in this type of island of work are a group of horizontal injection and a group of vertical closure with forces closure of 1,000 to 1,500 kN. The lower halves of the molds are placed on a sliding table to facilitate both the change of the mould and its maintenance and to attend the robot during the loading and unloading of the inserts or finished parts, while a hydraulic cylinder under the table arranges the movement of the upper porta-moldes plate.
The channels of injection/troughs can be recycled immediately after you take the pieces of the mold
Time cycle of 50-60 seconds
The solution to island presented at this important event represents a further development of yet made applications for the production of mangoes / handles consisting of components of different thickness which require very different cooling times between them.
The molds and equipment of accommodation of the leaves of the screwdrivers are provided with inserts to rapid change that use sheets of different diameters. Also the cavities of the mold can be exchanged, because changes in production are very frequent in this type of products. Injection/troughs channels can be recycled immediately after you take the pieces of the mold. When the robot takes the pieces of the fuel transfer, the manipulator cuts the flows and puts them in a granzador; the remolado will be convoyado directly on the same machine. The plant in exhibition can work with a time cycle of 50 - 60 seconds.
Island of work automated for production of screwdrivers with injected handles of Presma.
