JPS58135015A - Vibrative feeder - Google Patents

Abstract

PURPOSE:To improve linear vibratility of a trough, by constituting a vibrative feeder driven by a vibrative electric motor with coil springs in such a manner that the vibrative electric motor and the trough are combined in a direction at a right angle with an axial direction of the coil springs by a leaf spring directed to the longitudinal direction. CONSTITUTION:The bottom end part of a pair of leaf springs 26 is mounted by a bolt 27 to an angle member 24 fixed to the bottom end of a vibrative electric motor mounting plate 17 and the upper end part is fixed by a bolt 27 to a bracket 25 of a trough main unit 5. This vibration system is provided with a natural frequency of vibration determined by mass in a side of the trough 5, mass in a side of a driving unit 22 and the total spring constants of coil springs 14, 15 and the leaf spring 26, and a vibrative motor main unit 22 is driven by a frequency approximate to this natural frequency, then an axial directional component of the springs 14, 15 from circular vibrative force of the motor 22 is applied to the trough 5 while a vertical directional component is applied to the whole unit 1 of a vibrative feeder. In this way, the trough can be linearly vibrated in an axial direction of the coil springs.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibrating feeder driven by a vibrating motor.

Generally, in vibration 71-da, a vibration force is applied to the trough in a direction at a predetermined angle with respect to the transport direction of the trough, and the material on the top is thereby transported, but the source of this vibration force is Various drive types are known.

Among these, vibrating electric motors are widely used alongside electromagnetic drives, but like other drive types, this vibrating electric motor and the top must be connected by some spring means. An example of this spring means is a flat rubber spring. In this case, vibration in the desired direction can be obtained in the trough by arranging the shearing direction in the desired direction of vibration, but rubber springs are generally thin and require a large number of man-hours to assemble.

Therefore, it is preferable to use a coil spring as the spring means from the above point of view, and the stiffness of the coil spring in the direction perpendicular to its axis is quite small. In general, the greater the axial length of a coil spring, the lower its bending rigidity. The coil spring is arranged with its axial direction facing at a predetermined angle with respect to the transport direction of the trough, that is, in the desired vibration direction, and transmits the vibration force of the vibration motor to the driver 7.
As is well known, a vibration electric motor generates centrifugal force by rotating an unbalanced weight. Therefore, an excitation force is also applied to the coil spring in a direction perpendicular to its axial direction. It turns out.

Generally, a vibratory feeder consists of a two-mass vibrating system and is driven at a frequency close to its natural frequency. However, when a coil spring is used as the spring means and is driven by a vibratory motor as described above, the trough is Complex vibrations occur due to the bending component perpendicular to the axial direction of the coil spring.

Ideally, the trough would vibrate linearly in the direction of the coil spring (D axis 75), but in reality it would vibrate in a completely different and complex manner. No effect is obtained.

Misfire f! I4 was created in view of the above points, and aims to cause the trough to vibrate linearly in a predetermined direction in a type of vibratory feeder that uses a coil spring as a spring means and a vibrating electric motor as a drive source. , this object, according to the invention, includes a trough, a vibratory electric motor,
A vibration feeder including a coil spring arranged with an axial direction facing at a predetermined angle with respect to the transport direction of the trough and coupling the trough and the vibration electric motor; The vibrating feeder is further characterized in that the vibrating electric motor and the tokufu described in III are connected by a plate disposed so that the direction is perpendicular to the vibrating feeder.

Hereinafter, the first part about the vibration feeder according to the embodiment of the present invention will be described.
This will be explained with reference to the figure and the 1m2 diagram.

In the figure, the vibrating feeder is indicated as a whole by (1), and is suspended by four coil springs (2) via a part of the pedestal (3) and a K hook (4). In the vibratory feeder (1), the trough body (6) has a known shape and the conveyed material is discharged from its serpentine trail (6). 11sK on both sides of the trough body (5) are hooks (
7) are fixed, and the above-mentioned coil spring (2) is hooked onto these. A pair of triangular wing plates (1) are fixed to the outer surface of the bottom wall of the trough body (5) at a predetermined distance from each other, and a trough side spring support plate (9) is attached to these wing plates (8). is fixed by (11). This trough round spring support plate (9)
Two through-holes (11) are formed in parallel, and ring-shaped splash receivers (tiia) are fixed to both sides of the support plate (9) concentrically with these through-holes (a). These bolts are freely inserted through the through hole Ql.
A coil snoring ring IJ4Q&9 is wound around the trough side spring support plate (9). The tail of the bolt □□□ is inserted through the through hole formed in the drive side spring support plate (4) arranged between the blade plates (8), and the head is engaged with the vibration motor mounting plate (B). Let me, Natsuto (
Using the screws in 2), attach the vibration motor mounting plate (b) and bolts (
) and the drive side spring support plate (2) are integrated.

On the surface of the drive side spring support plate (2) facing the trough side spring support plate (9), a ring-shaped splash seat (2) is fixed concentrically with the through hole, and the t7j vibration motor is mounted. Also on the surface facing the plate-shaped trough-side spring support plate (9), a ring-shaped splash receiver is fixed concentrically to the through hole.

Both ends of the coil spring a and are held between the trough-side spring support plate (9) and the drive-side spring support plate (2), and between the trough-side spring support plate (9) and the vibration motor mounting plate (B), respectively.

The vibration motor main body (2) is fixed to the vibration motor mounting plate (b) with bolts (to).The vibration motor main body (2) has a known structure, and there are A semicircular unbalanced weight (2) is fixed.

Vibration electric motor body @ 01 rotation axis is coil spring o4
(2), so that it is perpendicular to the direction of the longitudinal bolt (2) that holds it, and the center of its rotation axis is on the center line between both bolts (2). An angle member (to) for attaching a plate spring is fixed by welding to the lower end of the vibration motor mounting plate (b), and a pair of plate springs (to 2) is fixed to the lower part 1111I with bolts (2). The upper ends of the pair of leaf springs (to) are fixed by bolts (2) to a leaf spring mounting bracket (C) fixed by welding to the rear wall of the trough body (5). Due to such fixing, the pair of plate springs (2) are arranged so that their longitudinal direction is perpendicular to the axial direction of the coil spring (B).

With the above configuration, a two-mass vibration system is constructed, and the 1M mass of the trough, which is the -10,000 mass side, is the trough body (50,000 mass).
), vane plate (8), coil 1 ring mounting plate (9), etc. The other mass side, the drive unit side, consists of the vibration motor main body (2), the mounting plate, and the coil 1 ring holding bolt ( ), a support plate (2), etc. And these two mass cane coil springs (B) (To)
and are connected by a plate spring (to). The spring constant of the coil spring (2) that holds the entire vibrating feeder (1) on the stand (3) is the total spring of the driving coil 1 cylinder (B) (to) and the plate spring (1). It is sufficiently small compared to the constant, and acts as a known vibration-proofing splash.

The vibration system described above has a natural frequency determined by the spring constants of the trough noble mass, the mass on the drive part side, the coil spring α4), and the plate spring (to), but the vibration motor body (2) It operates at a wave number close to the natural frequency. A circular vibration force is generated by the rotation of the rotating shaft of the vibration motor body (2), and this circular vibration force is generated by the coil spring o4 (2).
The axial component of the plate spring (to) is the bending direction component of the coil spring o4) and the plate spring (2).
) is added to the trough body (i) K, and on the other hand, the component perpendicular to this direction, that is, the longitudinal component of the leaf spring (T), is the longitudinal component of the leaf spring (T). Since the spring constant is extremely large, it can be applied without going through a spring system.
applied to the entire vibratory feeder (1). In other words, in this direction, the vibration system of the rack is a one-mass vibration system composed of the mass of the entire vibration feeder (1) and the spring constant of the suspension cylinder 1 cylinder (2), and the vibration system of the entire vibration feeder (1) ) is sufficiently large and the resiliency constant of the suspension spring (2) is sufficiently small, so the natural frequency of such a system is equal to the natural frequency of the vibrating feeder (1) as a two-mass system mentioned above. It's quite small in comparison. Therefore, the swing width of the trough body (5) in the longitudinal direction of the plate spring 4 is extremely small.

As a result, the trough body (5) can undergo linear vibration in the axial direction of the driving coil spring α◆ (to) as shown by the arrow. If the plate spring is not provided as in the past, there will be a considerable vibration component in the direction perpendicular to the axial direction of the drive coil spring α404, generating a so-called "prying" force and causing a trough. The main body (5) will perform complex vibrations. This is a coil spring (
This is because the resiliency constant in the axial direction of (b) and (b) is relatively close to the resiliency constant in the direction perpendicular to this. Therefore, depending on the length and diameter of the driving coil springs (B) and (G), the trough body (5) may undergo various complicated vibrations, making it unusable. However, by providing the plate spring (a19) as in this embodiment, the trough main body (5) can perform linear vibration in a predetermined direction, and can perform the desired action.

Although the embodiments of the present invention have been described above, the present invention is of course not limited thereto, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiment, a pair of driving coil springs o4 (2) were arranged on the left and right between the blade plates (8), but it can also be applied to a vibration feeder having one driving coil spring. It is.

Also, the leaf spring (G) may be -I■. Alternatively, 311 or more may be used.

In the above embodiments, the vibrating feeder (1) is suspended by a spring (2) on a part of the aquarium or on a frame, but it may also be supported on a foundation.

In this case, for example, the bottom wall of the trough body (6) and the vibration electric motor (2) may be supported by a coil spring.

As described above, the vibration feeder of the present invention has two coils that connect the trough and the vibration motor in the axial direction.
The trough is further connected to the vibration electric motor by a plate disposed with the longitudinal direction perpendicular to the trough. It is possible to perform linear vibration in the direction of the beam.

[Brief explanation of drawings]

FIG. 1 is a top view of a vibrating feeder according to an embodiment of the present invention, and FIG. 2 is a rear view thereof. In the figure, (1)・・・・・・・・・・・・・・・・・・・・・
・ Vibration feeder (5)・・・・・・・・・・・・・・・
・・・・・・・・・ Trough body α4 (to)・・・・・・
・・・・・・・・・・・・ Drive coil 1 ring (2)・・・・・・・・・・・・・・・・・・・・・
・・Vibration motor end・・・・・・・・・・・・・・・・
・・・・・・Plate spring agent Yasuo Iisaka Diagram 1

Claims (1)

[Claims] A vibratory feeder comprising a top, a vibrating electric motor, and a coil spring disposed with an axial direction facing at a predetermined angle with respect to the transport direction of the 1IIIth trough and coupling the trough and the vibrating electric motor. The vibrating feeder further comprises a plate spring arranged with its longitudinal direction perpendicular to the axial direction of the spring to couple the vibrating electric motor and the trough.