JPS6175716A - Electromagnetic vibrator - Google Patents

Abstract

PURPOSE:To eliminate the need of a vibration-proof spring and to obtain an excellent vibration-proof effect by simple adjustment by coupling two movable portions to a fixed portion through elastic means, preventing both movable portions from vibration in opposite directions to each other, and mounting a weight for adjusting the center of gravity on one movable portion. CONSTITUTION:A trough 11 is coupled to a fixed portion 13 by a plate spring 12. A counterweight 17 is disposed below the trough 11, and coupled to the fixed portion by a plate spring 24. An electromagnet 20 is fixed to the lower surface of the above weight 17, and a coil 21 is wound round the magnet. A movable core 22 is fixed to the trough 11 side in such a manner as to confront with the electromagnet. In this case, weights 28, 30 are threaded on the respective lower surfaces of the movable core 22 and the above weight 17 through screw rods 27, 29, so that the position of the center of gravity G3 of the weight 17 side movable portion can be adjusted in the vertical direction. A weight 32 having a screw portion 31 is threaded upon the weight 17, so that the position of the center of gravity G3 of the weight 17 side movable portion can be adjusted in the horizontal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic vibrator, such as an electromagnetic vibration feeder.

[Conventional technology and problems]

FIG. 6 shows a conventional electromagnetic vibration feeder (1), in which a trough (2) is connected to a fixed part (4) by an inclined leaf spring (3). An electromagnet (5) having a coil (9) wound thereon is fixed on the fixed part (4), and a movable core (6) is fixed to the bottom of the trough (2) so as to face the electromagnet (5). The fixed part (4) is equipped with a vibration-proof coil spring (7).
) is supported on the floor S.

In the above configuration, as shown in FIG. 7, a line t connecting the center of gravity G of the trough (2), the center of gravity G1 of the fixed part (4), and
1 is a line t that runs along the longitudinal direction of the leaf spring (3), and the bend is designed to be perpendicular to the line t.

When the coil (9) of the electromagnet (5) is energized with alternating current, for example, when the commercial power supply is 5oHzt half-wave rectified and energized, an alternating attraction force of 50 degrees is generated, and the top (2) moves in the direction parallel to the line t1. It vibrates at 5011Z. The reaction force due to the vibration of the trough (2) is transmitted to the fixed part (4) K via the plate d' (3). In addition, the fixed part (4) also prevents vibrations, and the spring constant of the coil spring (7) is appropriately selected to achieve a vibration-proofing effect.

However, the vibration force transmitted to the floor S cannot be controlled, but if the spring constant is selected at random, a large vibration force will be transmitted. When the coil spring (7) is not held on the floor S and the fixed part (4), the feeder (1)
However, it may also move to (°).

[Object and structure of the invention]

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electromagnetic vibrator that can achieve a vibration-proofing effect while completely eliminating the need for a vibration-proofing spring. This purpose, according to the invention, is the first
The movable part and the second movable part are coupled to the fixed part via elastic means that can be elastically deformed in the same direction, and the movable part is excited by an AC electromagnet in opposite directions, and the first movable part is This is achieved by an electromagnetic vibrator characterized in that a center-of-gravity adjustment mold () is attached to at least one of the DJ moving part and the second DJ moving part so that the relative position of the moving part can be completely adjusted.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, an electromagnetic vibration feeder according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

Figure 1ci? The electromagnetic feeder as a whole is indicated by αO, and the trough αυ is coupled to the fixed part 03 by a pair of front and rear, left and right leaf springs (6). A pair of left and right leaf spring mounting blocks (14a) (t46) are installed on the bottom of the trough ση.
are integrally fixed, and the upper ends of leaf springs (6) are fixed to bolts on both inclined end surfaces thereof.

The lower collar of the leaf spring (b) is fixed by bolts to the inclined end faces of blocks (15a), (15h), (16a), and (16b) that are integral with the fixing part α1.

Below the trough 01), the leaf spring mounting block (14a) (
A counter weight α force is arranged between 14b),
This is connected near the fixed part α by a pair of front and rear temporary springs. A pair of front and rear blocks 019aq are integrally fixed to the lower surface of the counter unit α sword, and the upper ends of temporary springs are fixed to the inclined end faces of these blocks with bolts. Further, the lower end of the leaf spring example is integrally fixed to the fixing part @, and is fixed by bolts to the inclined end surfaces of a pair of front and rear blocks (251).

The oblique angles of the leaf springs (tUa) are equal, and as shown in FIG. 1, the angle of a line t along one longitudinal direction of the leaf springs (tUa) with respect to the horizontal line is, for example, 70 degrees.

An electromagnet (1) is fixed to the lower surface of the counterweight (17), and is equipped with five turns of a coil 121). Also, opposite to this, the af motion cocoa is fixed to the trough tense. That is, both ends of the cross member are fixed to a leaf spring mounting block (14aX!4h) that is integral with the trough Qll, and the movable core (2) is integrally fixed to the center of this block.

A threaded rod (271) is fixed on the downward side of the Ijf moving core (sz), and a mold (2&) is screwed onto it.A threaded rod (1') is also fixed on the lower surface of the counter weight αη. , to which a heavy weight is screwed.These weights (
2F3 is for adjusting the center of gravity in the vertical direction, and is locked (as explained in the fourth factor for weight ①) (Loosen 31+ and rotate it to adjust its vertical position.

Therefore, the weight (counter containing force) of the threaded rod
The position of the center of gravity G of the weight aη side movable part can be preferentially adjusted in all vertical directions. The same applies to the hydraulic weight, which allows the position of the center of gravity G of the movable part on the trough Qυ side to be adjusted preferentially in the vertical direction.

As clearly shown in Fig. 5, the counterweight (l''I) is further screwed with a square-shaped weight C opening having a threaded portion Oυ, and by this rotation operation, the counterweight θ7 ) (if'l c'T @The position of the center of gravity G of the part can be adjusted preferentially in the horizontal direction.

In the above configuration, the trough C1η, the leaf spring mounting blocks (14a) (14h), the trough (Il1 double discharge It is designed to be equal to the amount of N on the counter weight side emitted from the threaded rod 3, the plumb screw (32, etc.), and the weight on the trough side. The center of gravity G and the center of gravity G3 of the weight on the counter weight side are
By adjusting the position of I C (21), they coincide as shown in Fig. 1, and connect the center point O of the attractive force between the electromagnet (1) and the movable core with the center of gravity G,, G, (coincidence). The line t is designed to be perpendicular to the lengthwise direction of the leaf spring (131211).The line t is designed to be perpendicular to the length of the leaf spring (131211). The spring constant is equal to m.

', 5': Function f'11 of the present invention is constructed as described above, and its operation will be explained next.

When AC is passed through the coil +211 of Denaisha Seki 3J,
For example, commercial vehicle IIρ5011. When Z is half-wave rectified and energized, 50H is generated between the electromagnet (4) and EiJ dynamic core 1 to 2.
An alternating attraction force of z is generated, they attract each other, and are displaced in opposite directions due to the restoring force of the leaf springs (2) and (24). That is, the trough αυ and the counterweight α force move with the same amplitude in a direction perpendicular to the longitudinal direction of the leaf spring (tac! (a) or in a direction parallel to the line t1).

When a reaction force is applied to the fixed part through the leaf spring (2) by the movement of the trough tool in the direction of the arrow a as shown in 1N, K is the force applied to the plate spring 24 by the movement of the counterweight α.
1'i, a reaction force of the same magnitude is applied to the fixed part in the direction of the arrow. The magnitude of these reaction forces changes sinusoidally, but since they are always the same magnitude with opposite directions, the difference becomes zero, and in the end, no reaction force is applied to the fixed part 03.5 Therefore, the entire circumference of the vibration isolating spring Even without it, vibrations will not be transmitted to the floor S.

When using this vibrator a0, it is necessary to adjust the position of the weight nmt32, but this will allow the trough division and counter
It becomes easy to design the shape and weight of the weight α force. In particular, the trough qη is used to transfer various materials by its motion, and its shape and weight must be adapted to the transfer conditions. Therefore, as shown in Fig. 1, it would be extremely difficult to fully determine the center of gravity of both rotating parts, but in this embodiment, this degree of adjustment was made by 71 (by the weight number 6z) Therefore, the design of the trough qυ is particularly facilitated.Furthermore, the weight of the trough tool and the feeder 00 as a whole can be made as small as possible.

In addition, the centers of gravity G5 and G of both i] moving parts are all exactly matched,
In addition, a sufficient vibration damping effect can be obtained even if the line t connecting the suction force action center point O is not strictly perpendicular to the direction of the leaf spring (2), Kuba trough (l
The vibration of υ becomes ideally orderly, and the force transmitted to the floor S can be completely reduced to zero.

Also, in some cases, the centers of gravity G, , G, do not match, but the weight forehead gloss (32) is adjusted so that the line connecting them is perpendicular to the direction t in the leaf spring (6) example. Good too.

This also provides a sufficient vibration damping effect.

It is also possible to determine the target position and then adjust it to that position after processing. Even in this case, the trough Ql
It remains easy to design l.

The embodiments of the present invention have been described above, but of course the present invention is not limited thereto, and various liquid forms are possible based on the technical idea of the present invention.

For example, in the above embodiment, the counter weight α7) was entirely disposed below the trough aη, but the trough q could be turned upside down.
υ may be arranged below the counter weight.

In addition, a plate spring a system was used as the elastic means, but this nVc
A coil spring or a plate rubber may be used instead.

Alternatively, a leaf spring and a coil spring may be used together.

In addition, in the above embodiment, the weight (Trough H and Counterway) can be adjusted in the vertical or horizontal direction, but it may also be possible to adjust the position in the diagonal direction. ) for position adjustment only on either side.
t attachment force may be added. Further, in the embodiment, a horizontally positionable weight may be attached to the trough Q.

Further, in the above embodiments, a mm torsional vibrating feeder was explained, but the present invention can also be commercially applied to a full type of machine, such as a vibrating sieve machine.

〔Effect of the invention〕

As stated above. Electromagnetic vibration of the present invention in U5? According to jJ machine,
The anti-vibration effect can be improved while making the anti-vibration spring uneasy. Since the anti-vibration spring is not needed yet, 1 of the entire vibrator
Installation on one mother is only gi. The first movable part, for example, the trough, can be easily designed while having the above-mentioned effects.

4 Simple drawings! Fig. 1 is a side view of an electromagnetic vibration feeder according to an embodiment of the present invention, Fig. 42 is a rotation/face feeder, and Fig. 3 is a side view of an electromagnetic vibration feeder according to an embodiment of the present invention.
II-Ill line sectional view, Figure 4 is an enlarged view of the main parts 1
The first view, Figure 5 (an enlarged perspective view of the Yoike part, the sixth factor is the 8-) view of the conventional example of the feeder of the magnetic vibration 11, and Figure 7 is the same 11111 diagram. It is.

In addition, in Figure 1, there is 1'+・, and 4・・・・・・・・・・・・・・・・・・ ``;2@
Vibration feeder C1v ・・・・・・・・・・・・
... Trough (6) (
Second season...... Board spring αη...
・・・・・・・・・・・・・・・ Counter weight (E)・・・・・・・・・・・・・・・・・・
Electromagnet 1211 ・・・・・・・・・・・・
・・・・・・・・・ Coil (27J
・・・・・・・・・・・・・・・・・・Movable core +28+ 1 awesome (32・・・・・・・・・・・・ Heavy
Ibara Ran 3

Claims (1)

[Claims] The first movable part and the second movable part are coupled to the fixed part via elastic means that can be elastically deformed in the same direction, and the movable parts are excited in opposite directions by an AC electromagnet,
An electromagnetic vibrator characterized in that a weight for adjusting the center of gravity is attached to at least one of the first rotating part and the second movable part so that its relative position with respect to the movable part can be adjusted.