JPH01153917U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the resin impeller manufacturing apparatus according to this invention, Fig. 2 a, b, c
3 are a plan view, a bottom view, and a cross-sectional view showing a resin mold for molding the back surface of an impeller and for setting a ring gate, which constitute the manufacturing apparatus shown in FIG. 1, and FIGS. 3 a and 3 b constitute the manufacturing apparatus shown in FIG. FIGS. 4a and 4b are explanatory views showing the resin flow direction in a vertical cross section when manufacturing a resin impeller using the manufacturing apparatus shown in FIG. An explanatory diagram showing the flow direction of the resin, the orientation of reinforcing fibers, and the cutout position of the test material in the horizontal cross section taken along the line - in Figure 4a, and Figure 4c is an explanatory diagram showing the
A _micrograph (100
Figures 5a and 5b are explanatory diagrams showing the resin flow direction in a vertical cross section and the orientation of reinforcing fibers in a comparative example in which a resin impeller is manufactured by supplying fluid resin from the center of the back surface of the impeller. Figure 5 (a) is an explanatory diagram showing the cutting position of the sample material, and Figure 5 (c) is a drawing substitute showing the shape and orientation of the reinforcing fibers at the cutting position _S2 shown in Figure 5 (b). Micrographs (100x), Figures 6a and b show another comparative example in which a resin impeller was manufactured by supplying fluid resin from pinpoint gates provided at four concentric circles on the back of the impeller. An explanatory diagram showing the flow direction of the resin in a vertical cross section, an explanatory diagram showing the orientation of the reinforcing fibers and the cutting position of the sample material, Figures 6c and d are at the cutting positions S ₃ and S ₄ shown in Figure 6b. micrographs (100x) showing the shape and orientation of the reinforcing fibers,
FIG. 7 is a sectional view showing a conventional resin impeller manufacturing apparatus, FIGS. 8a and 8b are a perspective view and a plan view, respectively, of a cylindrical insert constituting the manufacturing apparatus of FIG.
FIG. 9 is a perspective view illustrating the shape of the resin impeller. 1...Resin impeller manufacturing equipment, 2...Resin mold for molding the impeller shaft and impeller blades,
2d...impeller outer circumferential molding part, 3...resin molding mold for impeller shaft end face molding, 4...resin molding mold for impeller rear part molding and ring gate setting, 4d
... Impeller outer periphery molded part, 5 ... Ring gate, 7 ... Gas discharge pipe, 7d ... Gas discharge hole, 1
0... Cavity, 10a... Part in charge of impeller shaft, 100... Impeller, 100a... Impeller shaft, 100b... Impeller blade, 100c...
... Impeller outer periphery, 100d... Impeller back surface.

Claims (1)

[Scope of utility model registration request] A ring gate is provided in the impeller outer periphery molding portion of the resin molding mold that forms a cavity having a shape corresponding to the shape of the impeller, through which fluid resin flows in a film form from the entire circumference into the cavity from the impeller outer periphery molding portion. An apparatus for manufacturing a resin impeller, characterized in that a gas exhaust pipe is provided in a portion of the cavity corresponding to the impeller shaft portion, the gas exhaust pipe having a gas exhaust hole for exhausting gas components within the cavity to the outside of the cavity.