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Home > What's New > Mold For Producing An Impeller For An Axial Fan
  • Mold For Producing An Impeller For An Axial Fan2012-04-27
  • The existing creation relates to an Axial Fan, a technique of producing an impeller for that Axial Fan, along with a mold for producing the impeller on the axial admirer and, much more particularly, to some engineering concerning an axial admirer having an impeller which can acquire a sufficiently big oxygen flow and wind stress regardless of its compact, flat shape.

    According to this proposal, the plurality of vanes formed for the external circumferential surface area on the impeller on the axial admirer are constantly molded to type below portions or back again aspect portions extending to the middle portion on the bottom portion on the impeller. Therefore, the slide item on the mold that forms the "under-molding portions" for that vanes should be pulled out in the middle portion on the bottom portion on the impeller in parallel to the radial direction. like a result, the mold cannot but grow to be complicated. Accordingly, the mold gets quite expensive.

    In the above proposal, a curved surface area is formed for the external circumferential surface area on the bottom portion that forms the under-molding portions for that vanes on the impeller, to ensure that oxygen supplied through the under-molding portions on the vanes during rotation is supplied to the vanes for the external circumferential side. The region on the vanes forming the under-molding portions sharply decreases at a portion closer to the middle portion on the bottom portion. Therefore, the flow of oxygen cannot be reliably captured through the vanes on the under-molding portions.

    The existing creation continues to be produced in look at on the problems described above, and has as its item to offer a compact, flat axial admirer which is not restricted through the condition of an incorporated rotor magnet and ensures a sufficiently big oxygen flow and wind pressure, wherein the slide (under) item of the mold that forms the under-molding portions on the vanes on the impeller on the axial admirer is pulled out while being twisted (while performing a helical motion) in the path on the middle axis on the bottom portion on the impeller, to ensure that the mold could be formed easy to realize a multi-cavity mold, and also the vanes could be formed into an perfect type by setting vane angles depending on different rotating peripheral velocities on the vanes, to ensure that oxygen could be supplied in the under-molding portions on the vanes to the vanes for the external circumferential aspect during rotation on the impeller, a technique of producing an impeller for that Axial Fan, along with a mold for producing the impeller on the Axial Fan.

    In purchase to solve the above problems and to attain the above object, according to the existing invention, there is supplied an axial admirer comprising an impeller integrally formed, by resin molding, with a plurality of vanes extending from the bottomed cylindrical entire body to which a rotary axial assistance shaft entire body is formed at a middle of rotation of the bottom surface, each and every on the vanes being constituted with a principal vane extending from an external circumferential surface area on the bottomed cylindrical entire body at a predetermined tilt angle, along with a sub-vane extending, on the substantially flat external aspect surface area forming the bottom surface, in the principal vane toward the middle of rotation constantly on the predetermined tilt angle to provide oxygen to the principal vane.

    There can also be supplied a technique of producing an impeller for an axial admirer having the impeller integrally formed, by resin molding, with a plurality of vanes extending from the bottomed cylindrical entire body to which a rotary axial assistance shaft entire body is formed at a middle of rotation of the bottom surface, comprising in purchase to type each and every on the vanes integrally by resin molding with a principal vane extending from an external circumferential surface area on the bottomed cylindrical entire body at a predetermined tilt angle, along with a sub-vane extending, on the substantially flat external aspect surface area forming the bottom surface, in the principal vane toward the middle of rotation constantly on the predetermined tilt angle to type an under-molding portion, arranging an below item for molding the under-molding portion and for introducing a molten resin, performing gate reduce soon after the resin is set, leading to the below item to carry out a helical movement at a predetermined angular pitch in synchronism with mold opening, and retracting the below item in the under-molding portion in the path of mold opening, and thus getting a bare minimum of a single impeller.

    There can also be supplied a mold for producing an impeller for an axial admirer having the impeller integrally formed, by resin molding, with a plurality of vanes extending from the bottomed cylindrical entire body to which a rotary axial assistance shaft entire body is formed at a middle of rotation of the bottom surface, comprising a mold bottom portion driven to some mold available suggest along with a mold closed suggest and arranged in the resin injection molding machine, along with a plurality of mold pieces that type a cavity for forming, by integral resin molding, the vanes each and every comprising a principal vane extending from an external circumferential surface area on the bottomed cylindrical entire body at a predetermined tilt angle, along with a sub-vane extending, on the substantially flat external surface area that forms the bottom surface, in the principal vane toward the middle of rotation constantly on the predetermined tilt angle to type an under-molding portion, wherein among the plurality of mold pieces forms an below item which has an below condition portion for molding the under-molding portion along with a runner hole portion for introducing a molten resin, which performs gate cutting soon after the molten resin is set, and which is helically driven at a predetermined angular pitch in synchronism with mold opening on the mold bottom portion, and also the below item is retracted in the mold opening path in the under-molding portion, and thus getting a bare minimum of a single impeller.

    Axial Fan

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