JP2810021B2 - Sphere transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device for transferring a sphere in an arbitrary vertical direction by using a spiral rotary motion.

[0002]

2. Description of the Related Art Conventionally, there is an Archimedes spiral pump as a water pump using a spiral which rotates in contact with the inner wall of a cylinder. In this method, a screw blade provided around a rotation axis is installed in contact with an inner wall surface of a cylinder, and the screw blade is rotated to transfer a transferred object. In order to use the means for vertically transferring one by one, the rotation speed of the screw blade had to be accelerated higher than the speed at which the sphere descended on the surface of the screw blade.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a transfer device capable of transferring a spherical transfer object in a vertical direction without accelerating the rotation speed of a screw blade.

[0004]

In order to solve the above-mentioned problems, a transfer device according to the present invention comprises a main rotating shaft rotated by a motor and a plurality of planetary shafts which perform planetary motion with respect to the main rotating shaft. The rotating cylinder is provided on the planetary shaft and performs a planetary motion that revolves while rotating, and a screw blade that is coaxially provided in the rotary cylinder and performs a planetary motion that revolves while rotating.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a transfer device according to the present invention will be described with reference to the drawings. 1 is a partial longitudinal sectional view of the transfer device according to the present invention, FIG. 2 is a top view of the transfer device according to the present invention, and FIG. 3 is a cross-sectional view taken along line AA of FIG. . The transfer device according to the present invention includes a substrate 1, a driving source 2 such as a motor fixed to the substrate, a fixed sun gear 3, and a sun gear 3 rotated by the driving source 2.
, A main shaft 31 rotatably penetrating the center of the sun gear, an outer rotating cylinder 4 fixed to the main shaft 31 passing through the center of the sun gear, and a plurality of planetary gears 5 rotationally driven by rotation of the outer rotating cylinder.
An inner rotating cylinder 6 which revolves while rotating by the planetary gear 5, and a screw blade 7 which is mounted inside the inner rotating cylinder 6 coaxially with the inner rotating cylinder and revolves while rotating by the planetary gear 5. Consists of Here, the outer rotary cylinder 4 only needs to have a function for attaching the main shaft 31 and the planetary shaft 51, and it is not an essential requirement that the outer rotary cylinder 4 be cylindrical.

A main shaft 31 rotatably penetrating the center of the sun gear 3 is attached to a rotation shaft of the drive source 2 by a connection device (coupling) 12 and fixed to a bracket 11 attached to the substrate 1. The gear 3 is rotatably supported. The outer rotary cylinder 4 is fixed to the main shaft 31 by a main spindle fixing portion 46 fixed to the bottom 43 and a main shaft fixing portion 45 fixed to an upper support 44 provided at the upper end of the outer rotary cylinder 4. A plurality of bearings 41 are attached to the bottom 43 of the outer rotary cylinder 4, and the bearings rotatably support planetary shafts 51 fixed to the planetary gears 5. The inner rotating cylinder 6 and the screw blade 7 are fixed to the plurality of planet shafts 51, and each planetary gear 5 rotates with the rotation of the outer rotating cylinder 4, and the inner rotating cylinder 6 and the screw blade 7 rotate while rotating. Make a revolving planetary motion. The upper end of the planet shaft 51 is supported by a bearing 42 fixed to a support 44 provided on the upper part of the outer rotary cylinder 4.

Hereinafter, the operation of the transfer device according to the present invention will be described. When the main shaft 31 is rotated by the drive source 2, the outer rotary cylinder 4 fixed to the main shaft 31 rotates. Outer rotating cylinder 4
The planetary shaft 51 attached to the bottom portion 43 revolves with this rotation, and the planetary gear 5 fixed to the planetary shaft 51 meshes with the sun gear 3 and rotates to rotate the planetary shaft 51. With the rotation of the planet shaft 51, the inner rotating cylinder 6 and the screw blade 7 fixed to the planet shaft 51 make a planetary motion of revolving while rotating. For example, in FIG. 2, when the outer rotating cylinder 4 is rotated counterclockwise, the inner rotating cylinder 6 and the screw blade 7 rotate (revolve) around the main shaft 31 in the counterclockwise direction, and The meshed planetary gears 5 rotate to rotate the planetary shaft 51 in a counterclockwise direction, and rotate the inner rotating cylinder 6 and the screw blades 7 in a counterclockwise direction. When the screw blade 7 is wound as shown in the drawing, the slope of the screw blade 7 moves upward with the rotation.

When the sphere 8 is located in the inner rotating cylinder 6, the sphere 8 is pressed against the inner wall surface 61 of the inner rotating cylinder 6 by the centrifugal force generated by the revolving motion of the inner rotating cylinder 6. At this time, the sphere 8 is transferred upward by the upward movement of the slope of the screw blade 7.

Hereinafter, this principle will be described. As schematically shown in FIG. 4, the inclination angle of the slope of the screw blade 7 is defined as θ ₀ ,
If the mass of the mass is m and the gravitational acceleration is g, the force acting on the mass on the slope can be decomposed into a horizontal force and a force perpendicular to the slope. Force m
g · tan θ ₀ is received in the horizontal direction. On the other hand, when the mass moves in a circular motion at a constant velocity, the acceleration always moves toward the center, and moves at a radius of rotation r (mm), a velocity V (m / S), and an angular velocity ω (rad / S) as shown in FIG. The acceleration a of the mass point is expressed by the following equation (1).

[0010]

(Equation 1)

Therefore, from the equation of motion F = m · a,
The centrifugal force, that is, the centripetal force F when viewed in a coordinate form rotating with the mass point is expressed by the following equation (2).

[0012]

(Equation 2)

Here, in the transfer device according to the present invention, when the inner rotating cylinder 6 rotates around the center of the sun gear 3 together with the planetary gear 5, the centrifugal force applied to the sphere 8 at the position shown in FIG. If the respective component forces on the same line of gravity and gravity are balanced, the balance is expressed by the following equation (3). Here, m: mass of mass point 8, r ₁ : distance from the center of sun gear 3 to mass point 8, ω _L : angular velocity at which mass point 8 rotates around sun gear 3, θ ₁ : sun gear 3 and planetary gear 5 And the angle formed by the line segment connecting the center of the sun gear 3 and the center of the mass point 8, θ ₂ : the line segment connecting the center of the sun gear 3 and the center of the planetary gear 5, the center of the planetary gear 5 and the mass point 8, the angle formed by the line connecting the lines 8, θ ₀ : the inclination angle of the screw blade 7, and g: the gravitational acceleration.

[0014]

(Equation 3)

Therefore, the angular velocity ω _{L at} which the planetary gear 5 rotates around the sun gear 3 is expressed by the following equation (4).

[0016]

(Equation 4)

When the angular velocity ω _{L at} which the planetary gear 5 rotates around the sun gear 3 satisfies the above formula (4) or becomes large, the sphere 8 can be transferred vertically upward.
When ω _L becomes smaller than the expression (4), the sphere 8 descends on the slope of the screw blade 7 and can transfer the sphere downward.

[0018]

As described above, according to the present invention, the spindle 3
By adjusting the rotation speed of (1), the sphere located on the slope of the screw blade can be selectively moved in the vertical direction, and the rotation speed at which the upward movement and the falling speed are balanced. Thus, irregularities can be given to the movement of the sphere, and when used for a game machine, for example, the movement of the sphere can be made interesting.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view showing an outline of a configuration of a transfer device according to the present invention.

FIG. 2 is a plan view showing an outline of a configuration of a transfer device according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a diagram illustrating a force acting on a sphere located on a slope.

FIG. 5 is a view for explaining the force acting on a material point that makes a uniform circular motion.

FIG. 6 is a diagram illustrating a force in the transfer device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 11 Bracket 12 Connection device (coupling) 2 Driver (motor) 3 Sun gear 31 Main shaft 4 Outer rotating cylinder 41 Lower bearing 42 Upper bearing 43 Outer cylinder bottom 44 Supporting body 45, 46 Main shaft fixing part 5 Planetary gear 51 Planet Shaft 6 Inner rotating cylinder 61 Inner rotating cylinder inner wall surface 7 Screw blade 8 Sphere (transferred material)

Claims (1)

(57) [Claims] A sun gear; a main shaft rotatably penetrating the center of the sun gear; an outer rotating cylinder fixed to the main shaft;
A plurality of planetary gears meshing with the sun gear; a planetary shaft fixed to the planetary gear and supported by the outer rotary cylinder; an inner rotary cylinder fixed to the planetary shaft; and a screw fixed to the planetary shaft. A sphere transfer device consisting of blades.