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OUR SPECIALTY MOLDS , UNSCREWING AUOMATIC

                  Different automatic unscrewing systems that exist in the market, and spindle nut clamps eclipsables, rack activated by hydraulic cylinder, the three systems are used when designing our molds, said molds can be high technical difficulty systems añadirles hot channel beams cover the mold, whether as sliding skates and other injection systems, release and expulsion, truly this is the kind of molds in which more experience we have had in the past 25 years, made ​​molds habíaendo 24, 48, 86 cavidos with the aforementioned systems.




                         SCREW OF THREAD DEMOLDING BY FIXED SPINDLE


Este sistema ensambla un husillo fijo con paso de rosca superior a 45 grados y  varias entradas , el cual va roscado dentro de una tuerca que pivota sobre dos cojinetes y está alojada entre dos placas , al entrar y salir el husillo  , la tuerca gira al mismo tiempo que un engranaje que lleva ensamblada  mediante varias chavetas , el cual da movimiento a los noyós que están distribuidos normalmente en satélite a la tuerca .







 

        SCREW OF THREAD DEMOLDING THROUGH CORE PINS OUTSHINE

This system is possibly the shortest injection cycle  , is sold as a standard, although it is not economical quick return when productions are high, the same assembly in the mold plates is technically easy to mold level design and manufacture of the same, the only inconvenience is that it makes parting lines on the threads, but are practically negligible, is the most recommended for caps mold when they exceed a diameter approximately 45.

 





     SCREW OF THREAD DEMOLDING BY HIDRAULIC OR ELECTRIC MOTOR 

This system which is the only that can be used when the thread length is too long and prevents mold design using screw or zipper with hydraulic cylinder mechanism consists of a central gear is activated directly with another gear to the motor directly or using a double strandthe motor is the one we originates the rotational force sufficient to activate all unthreading cores, power can rotate unlimitedly great length threads or threads with very small, in terms of cycle speed injection is similar to the zipper unscrewed by.







            SCREW OF THREAD DEMOLDING  EJECTED BY PLATE  


This system is used only when two conditions:

 1 ° / the material to be injected is lower than 73 shore.

2 ° / the thread depth of the threaded area and the length is not too large.

Influenced by many factors in determining when a piece can be unscrewed by expelling plate must also say that it is the most economical systems having no unscrew.




 SCREW OF THREAD DEMOLDING or screw thread without end                                                                                                                                   


This type of sliding is manufactured unscrewed, the number of sliding depends on the thread pitch and profile, but also the material from which the piece is to be manufactured, if the thread profile generates negative, this will be less negative the greater the inclination of the flanks of the thread profile, the magnitude of the undercut is also provided due to material shrinkage.







  AUTOMATIC UNSCREWING MEANS OF ZIPPERS



This system is probably the most used in the facilities of our customers with this system there are molds and over 25 years manufacturing intermittently Making this system does not require standardized molds manufacture which saves between 15% and 45% compared to other systems, is technically simple machining and design, a gear shift, hydraulic or zipper is quick and easy.