JPH0543058Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotating disk type molten metal powder manufacturing apparatus, and particularly to a rotating disk type for preventing rotation of a holder connected to a rotating shaft so as to cover it. The present invention relates to a molten metal powder manufacturing device.

[Prior Art] A rotary disk type molten metal powder manufacturing apparatus is known as an apparatus for pulverizing molten metal, and conventionally, this type of molten metal powder manufacturing apparatus has a configuration as shown in FIG. 3.

As shown in the figure, the molten metal powder manufacturing apparatus is provided with a spout 1 for supplying molten metal A, and a rotary disk 2 is provided below the spout 1 to scatter the molten metal to the cooling side. As shown in FIGS. 3 and 4, this rotary disk 2 has a rotary shaft 4 extending from a motor section 3.
A flange portion 5 for supporting the bottom of the rotary disk 2 is formed on the rotary shaft 4 .

Further, as shown in FIG. 4, the flange portion 5 of the rotary shaft 4 and the rotary disk 2 are connected via a holder 6, and the holder 6 holds the rotary disk 2 and attaches the rotary shaft 4 to it. It is designed to transmit rotational driving force. Therefore, the holder 6 needs to be rotationally driven integrally with the rotating shaft 4, and for this purpose the holder 6 is connected to the rotating shaft 4 by a rotation preventing member 7 such as a pin member or a screw. There is.

[Problem to be solved by the invention] By the way, the rotary disk 2 is driven to rotate at high speed or accelerated or decelerated in order to apply a large centrifugal force to the molten metal, and for this reason, the rotation stopper 7 is composed of a pin member. If so, a large centrifugal force will be applied to the pin member. Furthermore, if the molten metal supplied to the surface of the rotary disk 2 remains attached to the surface of the rotary disk 2 without scattering, the rotary disk 2 loses its rotational balance and becomes a source of vibration.

Therefore, there is a possibility that the pin member may slip out to the outside due to centrifugal force or vibration. Furthermore, if molten metal adheres to the surface of the rotary disk 2, it is necessary to remove the rotary disk 2 in order to reuse the rotary disk 2. Therefore, when the rotary disk 2 and the holder 6 are fixed with a screw member and adhesive, the rotary disk 2 cannot be removed.

It is also conceivable to connect the holder 6 to the rotary shaft 4 using a reverse screw in the direction opposite to the direction of rotation of the rotary disk 2. In this case as well, there is a problem that loosening occurs due to vibration of the rotary disk 2 or changes in rotational speed such as sudden stop.

The present invention was created to effectively solve the above problems.

This invention prevents the loosening of the locking member that connects the rotating shaft and the holder in a rotating disk-type molten metal powder manufacturing device that connects the rotating shaft and the rotating shaft with a holder, and securely fastens the rotating shaft and the holder. The object of the present invention is to provide a rotating disk type molten metal powder manufacturing apparatus that can perform the following steps.

[Means and effects for solving the problem] The present invention provides a rotary disc having a holder that is fixedly connected to the rotary shaft so as to cover it and hold a rotary disk that scatters molten metal onto the rotary shaft. In the disk-type molten metal powder manufacturing apparatus, a rotation preventing member is inserted into the rotating shaft so as to be freely protrusive and retractable in a radial direction, and whose insertion rear end is exposed from the outer periphery of the rotating shaft to connect the rotating shaft and the holder. , a rotation locking engagement hole that penetrates the holder to expose the insertion rear end of the rotation prevention member, and has a step portion for accommodating and holding the insertion rear end of the rotation prevention member, and the rotation shaft A rotation prevention member is embedded between the rotation prevention member and the holder that covers the rotation prevention member through the rotation prevention engagement hole, thereby preventing the rotation prevention member from loosening or coming off, and making it possible to attach and detach the rotation prevention member. .

[Example] An example of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, a rotating disk 2 having a substantially trapezoidal cross section is provided on a rotating shaft 4 for applying centrifugal force to the molten metal and scattering it toward the cooling side.

This rotary disk 2 is supported by a flange portion 5 formed on the rotary shaft 4, and is connected to the flange portion 5 of the rotary shaft 4 via a holder 6 that forms an outer ring with respect to the rotary shaft 4. The upper edge thereof is engaged with the taper 10 of the rotary disk 2 to hold it downward, and the lower edge thereof is connected to the flange portion of the rotary shaft 4.

In particular, a plurality of locking members 11 are inserted into the flange portion 5 of the rotating shaft 4 in a radial direction so as to be freely retractable, and the locking members 11 connect the flange portion 5 and the holder 6 as shown in FIG. It is constructed by connecting machine screws 12.

The machine screw 12 is provided in the radial direction of the flange portion 5 so as to be freely protrusive and retractable from the insertion tip portion 13 to the insertion rear end portion 14, and the insertion rear end portion 14 is exposed from the outer peripheral portion of the flange portion 5. An engagement hole 15 that is open along the axial direction is formed in the insertion rear end 14 of the machine screw 12.
A tool such as a wrench for rotatably moving the machine screw 12 forward and backward is inserted into the hole. That is, a screw hole 16 is formed in the flange portion 5 of the rotary shaft 4 to rotatably accommodate the machine screw 12 from its insertion tip 13 to its insertion rear end 14. Flange part 5
deep enough to be buried within the

In addition, a machine screw 12 is attached to the holder 5 that forms the outer ring.
A locking engagement hole 17 is formed to hold the insertion rear end 14 of the inserter.

This locking engagement hole 17 has a small diameter hole 18 that extends through the holder 6 and faces the direction of movement of the machine screw 12, and the small hole 18 has a stepped portion 19 that is open and faces the machine screw 12. , this step 19
is the machine screw 1 exposed from the outer periphery of the flange portion 5
It is adapted to accommodate and hold the insertion rear end portion 14 of the two. That is, the stepped portion 19 is the insertion rear end portion 1 of the machine screw 12 exposed from the outer circumferential portion of the flange portion 5.
This forms a stopper portion that holds the machine screw 4 and restricts the backward movement of the machine screw 12.

Therefore, in order to stop the rotating body consisting of the rotating shaft 4 and the holder 6 that holds it, first screw the machine screw 12 into the screw hole 16 formed in the flange portion 5 of the rotating shaft 4. Align, screw in and bury.

Thereafter, a holder 6 forming an outer ring is attached to the flange part 5 of the rotating shaft 4 forming an inner ring so as to cover it, and a locking engagement hole is inserted facing the machine screw 12 embedded in the flange part 5. 17
are aligned. Therefore, the locking engagement hole 1
7, an engagement hole 15 formed in the insertion rear end 14 of the machine screw 12 is exposed.

After the positioning of the holder 6 with respect to the rotating shaft 4 is completed in this way, a hexagonal wrench is inserted into the small hole 18 formed in the holder 6, and the hexagonal wrench is inserted into the engagement hole 15 of the machine screw 12 through the small hole 18. engaged. When the hex wrench is reversed,
The machine screw 12 moves backward along the screw hole 16, and the insertion rear end 14 of the machine screw 12 is pulled out and exposed from the outer periphery of the flange part 5 of the rotating shaft 4.

When the inserted rear end 14 of the machine screw 12 is pulled out by a predetermined amount, it comes into contact with a step 19 formed on the holder 6, and is accommodated and held in the step 19. That is, the backward movement of the insertion rear end portion 14 is restricted, and the flange portion 5 of the rotating shaft 4 and the holder 6 are connected and restrained to each other via the machine screws 12. Therefore, the rotating shaft 4 and the holder 6 become a rotating body that is integrally fastened with the machine screws 12. Further, the rotary shaft 4 is rotationally driven, and a large centrifugal force acts on the machine screw 12, but the machine screw 12 is regulated and held by the stepped portion 19, so that it does not slip out to the outside.

In this way, the present invention embeds the rotation preventing member 11 that spans and connects the rotating shaft 4 and the holder 6 connected thereto, and prevents vibrations during acceleration and deceleration of the rotating body and during rotation. The rotation preventing member 11 is prevented from loosening or coming off, and the rotation of the rotating body consisting of the rotary shaft 4 and the holder 6 can be reliably prevented, and since the rotation preventing member 11 is removable, the rotating disk 2 can also be installed and removed.

[Effects of the invention] In summary, according to the invention, since the rotation preventing member is removably provided between the rotating shaft and the holder, it is possible to prevent the rotation preventing member from loosening or coming off. The rotating body can be reliably stopped from rotating, and the rotating disk can be attached and detached.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the device according to the present invention;
The figure is an enlarged view of the main part of FIG. 1, FIG. 3 is a schematic diagram showing a rotating disk type molten metal powder manufacturing apparatus, and FIG. 4 is a sectional view showing a conventional apparatus. In the figure, 2 is a rotating disk, 4 is a rotating shaft,
Reference numeral 6 denotes a holder, 11 a rotation prevention member, and 17 a rotation prevention engagement hole.

Claims (1)

[Scope of utility model registration request] In a rotating disk type molten metal powder manufacturing apparatus having a holder that is connected to the rotating shaft so as to be prevented from rotating so as to cover the rotating shaft in order to hold the rotating disk that scatters molten metal on the rotating shaft, a locking member that is inserted into and retractably from the rotary shaft and whose insertion rear end is exposed from the outer periphery of the rotary shaft to connect the rotary shaft and the holder; 1. A rotating disk type molten metal powder manufacturing apparatus comprising: a rotary engagement hole that penetrates the holder and has a stepped portion for accommodating and holding the insertion rear end of the holder.