JPH01200098A - Formation of vane wheel for blowing - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for forming a blower impeller, and is particularly aimed at improving the quality thereof.

<Prior art> Conventionally, this type of impeller has the structure shown in Fig. 1, where l is a circular metal plate made of a single plate with two cut and raised blades formed radially. The blade plate 3 is a hole created in the blade plate 1 by cutting and bending each wing piece 2, and 4 is a circular metal plate closure body for closing these holes 3, as shown in FIG. The two are integrally bonded together in a polymerized state at an extrusion caulking portion 5.

On the other hand, 6 shown in FIG. 3 is a strip material for pressing the vane plate 1, and 7 shown in FIG. 4 is a strip material for pressing the sealing body 4.

<Problems to be Solved by the Invention> When forming such a conventional impeller, the thickness deviation in the band width direction of the band plate material 6 of the blade plate 1 shown in FIG.
z) and the thickness deviation (T3-74) of the strip material 7 of the sealing body 4 in the width direction of the strip shown in FIG. Even if they are combined in such a direction and integrally bonded in a superposed state, the center of gravity will be offset from the center of the impeller, resulting in the drawback that it is time-consuming and requires balancing.

Therefore, in view of the above-mentioned conventional situation, the present invention is designed to take out the vane plate and the sealing body from the same band plate material having thickness deviation in the width direction by press working, and to remove the blade plate and the sealing body from the same band plate material having thickness deviation in the width direction. By reversing the width direction of the plate,
The present invention provides a method for forming an air blowing impeller in which the center position of the impeller and the center of gravity coincide with each other.

<Means for Solving the Problems> For this reason, the present invention takes out a blade plate in which cut and raised blades are formed radially from a part of a band plate material having a thickness deviation in the width direction by press working, The feather mv of the strip material
i Take out the sealing body that closes the hole caused by the formation of the wing pieces by turning the blade plate so that the width direction of the blade plate and the band plate are opposite to each other by pressing from the vicinity of the take-out part and fixing the sealing body. A method for forming a blower impeller is characterized in that:

(Function) According to this forming method, even if there is any thickness deviation in the strip width direction, either the vane plate or the sealing body is reversed and combined so that the strip width direction is reversed, so that the blade The cross section in the band width direction is symmetrical with respect to the center of the wheel, so that the center of gravity of the completed impeller does not deviate from the center and can be aligned with the center of gravity.

<Example> Hereinafter, an example of a method for forming a wind traveling impeller according to the present invention will be described based on FIGS. 5 and 6.

In FIG. 5, in the method of the present invention, the strips of the vane plate 1 and the sealing body 4 are alternately pressed in the longitudinal direction of the strip from the same metal strip material 8. The thickness deviation in the width direction (TS-Tb) is made the same, and either the impeller 1 or the sealing body 4 is reversed so that the width direction of the strip is reversed, and the thickness deviation is adjusted as shown in FIG. (TS Tb) are combined in a mutually canceling manner to bond them together in a polymeric state.

In this way, as shown in FIG.
is extremely short, so that the thickness in the longitudinal direction of the strip between the strip length (L) substantially maintains the cross-sectional shape of the strip in the width direction.

Therefore, no matter what thickness deviation exists in the width direction of the strip, if one of them is reversed and combined so that the width direction of the strip is reversed, the cross section in the width direction of the strip will be The shape can be made symmetrical.

According to the above configuration, in the completed impeller, the center of gravity does not deviate from the center, the center and the center of gravity can be aligned, and there is no need to perform work such as balancing, which saves time and effort. .

<Effects of the Invention> As explained above, the present invention takes out the vane plate and the sealing body at adjacent positions of the same strip material having thickness deviation in the width direction by pressing, and then inserts them into the strip material of the strip material. By combining the blades so as to cancel out the thickness deviation in the width direction, it is possible to provide an impeller whose center and center of gravity are aligned, eliminating the need for balancing work, which is required for impellers whose center of gravity is deviated from the center. It is possible to provide a method for forming a blower impeller that is not necessary and can improve quality and manufacturability.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a conventional blower impeller, Fig. 2 is a vertical cross-sectional view showing the same impeller after assembly, and Fig. 3 is an exploded perspective view showing a conventional blower impeller.
4 and 4 are perspective views of a strip material for processing the same impeller, and FIG. 5 is a diagram showing an embodiment of the method for forming an air blowing impeller according to the present invention, in which the impeller of the strip material is shown in FIG. FIG. 6 is a longitudinal cross-sectional view showing the state of the same impeller after assembly. l... Impeller 2... Cut-and-raised wing piece 3... Hole 4... Closure body 8... Band plate material patent applicant Mitsubishi Electric Co., Ltd. agent Patent attorney Yuji Oiwa Masu 1 figure 162

Claims (1)

[Claims] A vane plate having radially cut and raised blades is taken out from a part of a strip material having a thickness deviation in the width direction, and the vane plate is cut and bent in a radial manner by pressing from a part of the strip material having thickness deviation in the width direction. A blowing impeller characterized in that a sealing body is taken out which is superimposed and fixed on a plate by inverting the blade plate so that the width direction of the blade plate and the band plate are opposite to each other, and which closes a hole formed by the formation of blade pieces. How to form.