JPH0661832U - Rotary parts feeder - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rotary parts feeder having a simple structure and a small weight and height. [Structure] The substantially conical rotating body 51 is rotationally driven by the ultrasonic motor driving unit M. The component m is transferred by the centrifugal force along the surface of the component guide member 57, and the flange portion 51a
Although the centrifugal force is also applied to the belt conveyor B, it is transferred while being pressed by the side wall forming member 58, and is individually supplied to the belt conveyor B.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary parts feeder for supplying one part to a next process.

[0002]

[Prior art and its problems]

 FIG. 3 shows a rotary parts feeder of a conventional example, which is shown by 1 as a whole, and the bottom wall portion of the bowl-shaped rotating body 2 is supported by a bearing 10, which supports the rotational force of the motor 8. It is rotationally driven by the belt 9 in the direction b shown in FIG.

An opening 2b is formed in the center of the bottom wall of the rotating body 2, a shaft 3 is inserted therethrough, and a disc 4 is fixed to the tip of the opening 3b by a mounting member 5. . Further, the disk 4 is configured to be rotated by a motor 6 via a coupling 7 in the direction a in FIG. A flange portion 2a is formed on the outer circumference of the rotating body (hereinafter referred to as a bowl) 2. The flange portion 2a rotates in the b direction as shown in FIG. Is attached as a track forming material, and a side wall 11 is attached to a stationary portion via a member 13 on the outer peripheral edge portion. The conventional rotary parts feeder 1 is configured as described above, and its operation will be described below. A large number of components m are accommodated on the disc 4, and the first rotation speed in the direction a causes centrifugal force to dispose the components m from the upper edge of the disc 4 to the outer periphery thereof. It rests on the flange 2a of the bowl 2 in which it is placed. Further, the component m is transported while being regulated in the extending direction of the track defined by the wire 12 and the side wall portion 11 with the rotation of the bowl 2 rotating in the b direction at the second rotation speed. A belt conveyor 15 is disposed at the discharge end of this truck, and is placed on the belt portion 16 and transported in the direction c shown in FIG. 4 and supplied one by one to the next step. The rotary-Barts feeder 1 of the conventional example is constructed as described above, but as is apparent from FIG. 3, two motors 6 and 8 are arranged below the bowl 2 and these Since a mechanism for transmitting the rotational force to the disc 4 and the bowl 2 must be arranged, there is no complicated mechanism as described above below the bowl 2, and these require a considerable height. Therefore, since the height of the entire device is increased and the motors 6 and 8 are provided, the entire weight of the rotary parts feeder 1 becomes large, and its handling is inconvenient.

[0004]

[Problems to be solved by the device]

 The present invention has been made in view of the above-described invention, and an object of the present invention is to provide a rotary parts feeder that can simplify the structure below the bowl, that is, the rotating body, and can significantly reduce the weight.

[0005]

[Means for solving problems]

 The above-mentioned object is provided with a horizontal flange portion at the upper end portion and a component receiving portion for accommodating a large number of components in a substantially conical shape, and a rotating body rotatably supported around its central axis, and the rotating body. An ultrasonic motor driving unit that rotationally drives the body, an arc-shaped side wall portion that is disposed near the outer peripheral edge portion of the flange portion, and an inner wall of the component receiving portion that is disposed in the stationary portion. This is achieved by a rotary parts feeder consisting of a fixed arc-shaped parts guide member.

[0006]

[Action]

 The component accommodated in the component receiving part rises radially outward along the inner wall surface due to the rotation of the component receiving part, but at this time it moves while contacting the component guide member arranged in proximity to this. Then put on the flange. Also, the flange portion is also rotating, and the component receives the centrifugal force in the radial direction, but is guided to the next process one by one by being guided by the side wall portion.

[0007]

【Example】

 Hereinafter, a rotary parts feeder of the present invention will be described with reference to the drawings. Incidentally, according to the present invention, since the rotation driving portion of the ultrasonic motor is adopted, the principle will be briefly described with reference to FIG. An ultrasonic motor is composed of three elements, a piezoelectric element, an elastic body, and a moving body. When the elastic body is excited by ultrasonic vibration generated by the piezoelectric element, the elastic body vibrates at its own frequency and The wave continuously travels through the elastic body. At this time, the mass point on the surface of the elastic body becomes an elliptical motion, and the moving body receives thrust and rotates just like a wave carries an object.

When the piezoelectric element and the elastic body are attached to each other in such a manner to form a ring shape, a “rotary ultrasonic motor” is formed, and when a linear shape is formed, a “linear ultrasonic motor” is formed. Further, by switching the direction of the applied voltage and the direction of the current, the forward / reverse rotation can be easily switched.

Ultrasonic motors are classified into “standing wave type” and “traveling wave type”. The standing wave type is a method of moving a moving body by using ultrasonic vibration as a driving energy source and pushing a part of the moving body with a vibrating piece or the like. This method can increase the conversion efficiency, but the moving direction of the moving body is constant, and since the contact points are at the same location, the wear at that location is severe and the durability is poor. On the other hand, the traveling wave type is a method in which a moving element is moved by a traveling wave that is a combination of longitudinal waves and transverse waves generated in an elastic body by bonding a piezoelectric element to the elastic body. The conversion efficiency of this method is lower than that of the standing wave type at present, but it is superior in durability because it can be easily switched between forward and reverse rotations and wear is small.

In FIG. 1, the entire rotary parts feeder is designated by 50, and the rotary body 51 having a brim shape is made of synthetic resin, and the central portion thereof is formed as a receiving portion 51c protruding like a hat. This portion is rotatably supported on the support column 52 via a bearing 54. That is, the support shaft 53 fixed to the upper end of the column 52 is fixed to the inner race of the bearing 54, and the outer race is fixed to the rotating body 51.

The upper end portion of the rotating body 51 is formed as a flange portion 51 a, which is horizontal, but an annular side wall forming member 58 is attached to a ring-shaped support column 59 by a bolt 60 in the vicinity of the radially outer edge portion. It is fixed. Further, an annular ultrasonic motor driving unit M is arranged on the ring-shaped support column 59 and is in contact with the flange portion 51 a of the rotating body 51. The ultrasonic motor drive unit M is configured so that high frequency power is supplied from the piezoelectric element drive unit 55 connected by the electric wire 64. Further, the rotating body 51 is configured to accommodate a large amount of the component m by the component receiving portion 51b thereof, and is close to the inner wall surface of the component receiving portion 51b (in FIG. Although it is described, a slight gap is actually opened.) The component guide member 57 is fixed to the stationary portion S via the support portion 56. The flange portion 51a is rotating in the d direction as shown in FIG. 2, and the belt conveyor B is connected to this portion. A pair of track defining members 66 and 67 are formed on the tracks of the belt conveyor B.

The embodiment of the present invention is configured as described above, and its operation will be described below.

Based on FIG. 5 and the principle of the ultrasonic motor described above, the rotating body 51 is rotated in the f direction by the ultrasonic motor driving section M. However, the component m housed in the rotating body 51 is The component guide member 57 receives the centrifugal force and moves upward along the inner peripheral wall surface of the component receiving portion 51b, but as shown in FIG. 2, the component guide member 57 approaches the inner peripheral wall surface of the component receiving portion 51b in an arc shape. The component m is transferred outward in the g direction while being in contact with this wall surface, and is transferred from the upper end portion 57a of the guide member 57 to the flange portion 51a. The component m reaching the flange portion 51a is also subjected to centrifugal force here, but is regulated by the side wall forming member 58, and the component m is transferred along the d direction. Even if the component m receives a force directed in the radial direction, for example, by being pushed by the components m which are arranged one behind the other, it is returned to the inside of the rotating body 51 by the wire 61 attached to the inner edge of the flange portion 51a. It is configured to be transported again along the inner peripheral wall surface of the side wall forming member 58 without being damaged. Further, the component m reaches the connecting portion between the flange portion 51a of the rotating body 51 and the belt conveyor B, and is guided to the belt conveyor B by the track defining members 66 and 67 formed on the tracks of the belt conveyor B. And transferred. In the belt conveyor B, the component m is transferred on the belt 65 and is supplied to the next process one by one.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiment, the component guide member 57 is configured as shown in FIG. 2, but a plurality of such guide members 57 may be provided in close proximity. In this case, there are a plurality of parts transferred from these ends to the flange 51a, but it is possible to transfer one to the belt conveyor B without any problem.

Further, in the above embodiment, the ultrasonic motor drive unit M is configured as a complete ring shape, but it may be divided into M ₁ , M ₂ , ... Good. For example, four ultrasonic motor driving units may be arranged at 90 degree intervals.

[0017]

[Effect of device]

 As described above, according to the rotary parts feeder according to the present invention, the structure of the drive unit is simple, the overall weight can be reduced, and the height can be reduced.

[Brief description of drawings]

FIG. 1 is a side sectional view of a rotary parts feeder according to an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a side sectional view of a conventional rotary parts feeder.

FIG. 4 is a plan view of a conventional example.

FIG. 5 is a schematic diagram for explaining the principle of an ultrasonic motor.

[Explanation of symbols]

 51 Rotating Body 57 Parts Guide Member M Ultrasonic Motor Drive Unit

Claims (1)

[Scope of utility model registration request] 1. A rotating body having a horizontal flange portion at an upper end portion and a component receiving portion having a substantially inverted conical shape for accommodating a large number of components, the rotatable member being rotatably supported around a central axis thereof, and the rotating body. An ultrasonic motor driving unit that rotationally drives the body, and an arc-shaped side wall portion that is disposed in proximity to the outer peripheral edge portion of the flange portion,
A rotary parts feeder comprising an arc-shaped parts guide member fixed to a stationary part and arranged in the vicinity of the inner wall of the parts receiving part.