JPS61282214A - Vibrating type parts feeder - Google Patents

Abstract

PURPOSE:To exhibit a sufficient vibration isolation effect without increasing the height of a parts feeder, by providing such an arrangement that two troughs attached to the support sections of drive springs which are coupled to a base by means of leaf springs are subjected to excited vibration, and therefore, component parts are transferred in the opposite directions. CONSTITUTION:Leaf spring attaching plates 30 respectively secured to the bottoms of return and feed troughs 2, 22 are coupled to a common leaf spring support section 33 by means of a pair of front and rear drive leaf springs 32, 31, respectively. Vibration isolating leaf springs 30, 29 which connect the support section 33 to a base 40 therebelow are fixed at both ends thereof to the support section 33 and the base 40, respectively. When electromagnetic coils 37, 38 are energized so that the troughs 22, 21 are subjected to vibration the reaction force of which is transmitted to the support section 33 through the springs 31, 31. Since the vibration transmitted through the spring 31 has a phase reverse to that of the vibration transmitted through the spring 32, the horizontal components of two kinds of vibration are canceled out with each other while the vertical components there of are added together. Therefore, the bending motions of the spring 31, 32 due to the reaction of the vertical components may be reduced by increasing the lengths of the springs to reduce the transmission rate of the reaction force to the base 40.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a vibrating parts supply device that transports small parts by vibration and supplies them to a subsequent process.

[Prior art and its problems]

Recently, a number of vibrating parts feeding devices called air parts feeders have been developed. The principle of this typical device is shown in FIG. 1, in which a parts return trough (1) extends linearly and vibrates rather than transporting parts in the direction indicated by the arrow.

Further, the supply trough (2) extends linearly with a slight gap from the return trough (1), and vibrates so as to transport the parts in the opposite direction to the return trough (1) as shown by the arrow.

The parts in the supply trough (2) are transferred to the return trough (1), where they are corrected to a desired posture by the parts rearranging section (3) provided integrally with this return trough (1), and then transferred to the discharge section (4). )
y) - is supplied to the subsequent process. Parts that have not been corrected and parts that have exceeded 7 o - are returned to the return trough (1
) and returned to the supply trough (2) again. In this way the parts are placed in the supply trough (2) until they are corrected to the desired position.
and the return trough (1).However, conventionally, there has been a problem in providing vibration isolation to the platform on which such equipment is installed.

FIG. 2 is a side view of the device shown in FIG.
1) and the supply trough (2) are connected to a drive spring support part (8) by a pair of front and rear leaf springs (6) and (7), respectively. The leaf springs (6) and (7) are tilted in opposite directions as shown in the figure, and are subjected to an excitation force of opposite phase by an electromagnetic drive unit (not shown), and the supply trough (2) is tilted in the direction indicated by arrow a. , the return trough (1) vibrates in the direction shown by the arrow.This vibration force is transmitted as a reaction force to the spring support (8) via the springs (6) and (7) as shown by arrows C and d. If the amplitudes of the return trough (1) and the supply top (2) are the same, then the reaction force C applied by the spring (6) and the reaction force d applied by the spring (7) are horizontal. The components cancel each other out, but the vertical components add up to each other.Therefore, as shown in Figure 2, this vertical component reaction force is applied to the installation stand (9) placed on the spring support (8). If the parts are joined together, it causes various troublesome problems for the surrounding area.For example, several or even dozens of such linear parts feeders are placed in parallel at close intervals on the same installation stand (9).
However, if the reaction force as described above is large, it will be transmitted as vibration force to the adjacent linear parts feeders, especially the return trough (1) and the integrated parts feeding section (3).
Disturbances occur in the flow of parts in the process, which reduces the efficiency of sorting small parts.

In order to solve the above problems, a vibration isolation structure as shown in FIG. 3 has conventionally been adopted. Note that parts corresponding to FIGS. 1 and 2 are given the same reference numerals. In other words, the drive spring support part (8) is further
(10 is fixed, and the entire device is supported on the installation stand (9) by a vibration-isolating coil spring (6). Although such a structure certainly provides a vibration-proofing effect, the height of the entire device is As is clear from the vibration isolation theory, in order to reduce the vibration isolation effect, that is, the transmission rate of the above-mentioned reaction force to the installation base (9), the mass of the weight (2) must be as large as possible. Or, it is necessary to make the spring constant of the coil spring Oη as small as possible.In order to increase the mass of the weight (2), it is also possible to increase its area when viewed from above in addition to increasing its height. However, the installation surface '!R of the installation stand (9) is generally limited, which is undesirable.On the other hand, in order to reduce the spring constant of the coil spring, its height must be increased. Furthermore, increasing the height is not preferable from the standpoint of supporting stability of the device.

In the end, with the conventional vibration-proof structure shown in Fig. 3, the height of the entire device increases and the height of the part supply port, that is, the discharge end of the discharge section (4), becomes unstable. As the size increases, various restrictions can be imposed on subsequent processes.

[Problems to be solved by the invention]

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a vibrating component supply device that can exhibit a sufficient vibration damping effect without substantially increasing the height of the entire device.

[hands]

This purpose is achieved according to the invention by at least two troughs;
These two troughs t - an excitation part that vibrates in opposite phase; a drive spring support part; all of the two troughs are connected to the drive spring support part respectively; A vibrating component supply device comprising: a drive spring coupled to mutually transfer all components in opposite directions, the drive spring support portion being coupled to a base by a plate spring; achieved by.

〔Example〕

Hereinafter, a circulating vibrating parts supply device or a linear parts feeder according to an embodiment of the present invention will be described with reference to the drawings.

4 and 5 completely show the first embodiment of the present invention. In the figures, the vibrating component supply device is indicated as a whole by 4, and the return trough Ca1l and the supply trough (221μ) are arranged in parallel with a slight distance apart. A parts sorting section @ is integrally formed in the return trough Qυ.A parts discharging section c241 is connected to this parts sorting section (23).

As shown in FIG. 5, a leaf spring mounting plate OG is fixed to the bottom of the return trough Qυ and the supply drum 7 [221, respectively, as shown in FIG.
They are connected to a common leaf spring support by υ.

The leaf springs C311c+a are arranged so as to be inclined in opposite directions, and both ends are fixed to the leaf spring mounting plate (c) and the leaf spring support portion with bolts.

A movable core figure is fixed to one leaf spring mounting plate (2) with bolts, and similarly a movable core (to) is fixed to the other leaf spring mounting plate (2) with bolts. An electromagnetic core (end) is located between these movable cores (b) and (end) and is fixed to the plate spring support portion through a mounting member 8I. Mutually independent coils 67) are wound around the yoke portions formed on both sides of the electromagnet core, and are excited by the same AC power source through independent control means (not shown), such as variable resistors. be done.

Therefore, the direction is opposite to the direction of the AC attraction force for the movable core time signal. As described above, the vibrating section according to this embodiment includes the electromagnetic core (to), the coil @ (to), and the movable core (b) (
), both troughs CI!
21G! υ performs vibrations having opposite phases and tilting in directions opposite to each other as shown by arrows A and B.

In this embodiment, the movable part on the return trough Q11 side including the part sorting part and the discharge part (241') and the rotating part of the supply trough all have the same mass, and the mass of the spring support part (to) is the same. , is configured to be equal to the sum of these.Also, the spring constants of leaf springs 6υ are also equal.Therefore, if the amount of current in coil 6?) (to) is the same, theoretically, the return top cIυ and the supply trough 1221 are supposed to vibrate in the directions of arrows B and A with an amplitude of 4°, but in reality, the plate spring 6υ□□□ is fixed at the mounting part @ (to) and the support part. The tightening force of the bolts causes a difference in the resonance frequency between the supply trough @ and the return trough side, and especially when driving at a frequency close to the resonance frequency, there is a large difference between the trough (2υ) and the resonant frequency. A difference in swing width will occur.Also, it is difficult to actually configure both top side weights to be the same.Furthermore, it is difficult to make the loads on both troughs C111123 the same.However, according to this embodiment, the coil 37) C3
By fully adjusting the control means respectively connected to 81, the amplitudes of both troughs Qll can be exactly matched. In response to such shaking, the parts m in the supply trough are transferred in the direction shown by the arrow, ascending the inclined transfer face and reaching the flat part (c). At this point, the entire guide action of the guide part (to) is shifted to the return trough clll side. The transfer surface of the return trough Qυ is horizontal and is at the same level as the left end of the supply trough in the figure, and the plane of the supply trough n is on the transfer surface of the parts sorting unit @ which is integrally fixed to the return trough Qυ. Although it is on the same level as the equipment, it is tilted slightly downward toward the return trough Qυ side. Therefore, on the parts sorting section
As shown in 3a), it is shifted in the direction indicated by the arrow. Actually, a sorting means is additionally added to the parts sorting section, but it is not particularly relevant to the present invention and will therefore be omitted. Parts m1lI1 whose posture has been corrected in the parts sorting department @.
- pieces are discharged from the discharge section (to). Parts whose posture has not been corrected or parts whose posture has not been corrected are returned to the return trough (
21) falls into or into the supply trough and circulates further through the return trough Qυ and the supply trough 123 k.

According to the present invention, the above-mentioned spring support part (to) is further arranged below the spring support part (40), and the vibration isolating plate spring t4:
t44). The leaf spring 3 (Foundation) is fixed to the spring support part and the base plate by bolts +451 f461 t4η (48) at both ends.The base (
4 (J may be simply placed on the installation stand (9) or fixed thereto with bolts. Through holes υ (44) are formed at both ends of the base t4G, and vibration isolating plates Spring t43 (4
41-Used when fixing the bolt (c) to the spring support part.

Electromagnetic coil 6? ) (to), the supply trough t2
21 and the return trough 12υ vibrate as described above, and their reaction force causes the driving leaf spring C1υC33t-
It is added to the spring support part (to) through the spring support part. However, although the amplitudes of the supply trough and the return trough t211 are the same, since the vibrations are in opposite phases, the horizontal components cancel each other out, and the vertical components are calculated by each other. Due to this vertical component reaction force, the anti-vibration leaf spring (former foundation) performs a bending motion using the fixed end of Pol H4Hη as a fulcrum, but the spring constant in this bending direction is its length, that is, the left and right in the figure. It can be made as small as desired by increasing the length in the direction. Therefore, the bending spring constant of the vibration isolating leaf spring (43 mm) can be reduced without increasing the height of the entire device. In other words, without increasing the mass between the spring support parts that receive the reaction force. The mass of the whole device and the vibration-proof leaf spring (
The resonant frequency determined by the bending spring constant of 43 m can be made sufficiently lower than the excitation frequency of the vibrating section. Therefore, the reaction force transmission rate to the base t4Q can be made sufficiently small. That is, a sufficient vibration damping effect can be obtained. Further, according to this embodiment, the coil 6? ) By varying the amount of current applied to the troughs, the vibration-proofing effect is somewhat reduced, but the amplitudes of both troughs c+utn can be changed to obtain the optimum shuffling action. Generally, it is not desirable to increase the transfer speed too much in the sorting section, but it is necessary to sufficiently supply parts from the supply trough to this section in order to improve the supply efficiency.

6 and 7 show a circulating type vibrating parts feeder or +7 near parts feeder according to a second embodiment of the present invention, but in the figures, do parts corresponding to those in the first embodiment have the same reference numerals? The detailed explanation thereof will be omitted. That is, this embodiment has exactly the same configuration as the first embodiment except for the configuration of the vibrating section. In the excitation section of this embodiment, an electromagnetic core 6I wound with - coils is fixed to the supply trough via a plate spring mounting plate (c), and a movable core 6υ is mounted on the plate opposite to this. It is fixed to the return trough f2υ by a mounting member (53) via a spring mounting plate (■).

The movable core 1511 extends laterally with a gap between the leaf spring mounting plates and faces the electromagnet core group. Even with such a vibrating part, the return trough C! υ and supply trough■
vibrates in exactly the same way as in the first embodiment, and due to the presence of the vibration isolating plate spring 43, almost no vibration is transmitted to the base (4G, that is, the installation base (9)).

Although nine embodiments of the present invention have been described above, the present invention is of course not limited to these and can be modified in various ways based on the technical idea of the present invention.

For example, in the above embodiment, two troughs 3υtnt- are supported between one spring support part via the leaf spring 311C13k, but another trough is also connected to the spring support part through a leaf spring. It's okay. In this case, if the amplitude of one trough μ is twice the amplitude of the other two troughs and they vibrate in opposite phases, exactly the same effect as in the above embodiment can be obtained. Furthermore, four troughs may each be connected between one spring support via a leaf spring. In this case, if two of them perform the same movements as the return trough C23 and the other two perform the same movements as the supply trough C23, the same effect as in the above embodiment can be obtained.

The same considerations as above apply for five or more troughs.

Moreover, in the above embodiment, both troughs G! All of the 11 parts may be placed close to each other in a circulating type, and then separated from each other to perform independent transfer and feeding operations. Further, in the first embodiment, the fixed core portion around which the coil Oη is entirely wound is integrated, but these portions may be separated.

In addition, in the above embodiment, the base t40 t-device installation stand (
9) or fixed with bolts, but it is also possible to use the base itself as an installation base.

〔Effect of the invention〕

As described above, the vibrating component feeder of the present invention includes at least two troughs; an imaging section that vibrates these two troughs in opposite phases; a drive spring support section; and a drive spring support section for each of the two troughs. a drive spring that connects the two troughs so that the entire excitation force of the vibrating section transfers the parts in opposite directions; Since they are connected together, the structure is extremely simple, and the height of the entire device does not increase significantly, and almost no vibration is generated on the base or the installation stand on which it is placed.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing the principle of a conventional circulating linear parts feeder, Fig. 2 is a schematic side view of Pl, Fig. 3 is a schematic side view of another conventional circulating linear parts feeder, and Fig. 4 is a schematic side view of another conventional circulating linear parts feeder.
The figure is a plan view of a circulating linear parts feeder according to a first embodiment of the present invention, FIG. 5 is a side view of the same, and FIG. 6 is a side view of a circulating linear parts feeder according to a second embodiment of the present invention.
and FIG. 7 is a partial drawing in the direction of the line ■-■ in FIG. 6. Incidentally,

Claims (2)

[Claims] (1) At least two troughs; an excitation unit that excites these two troughs in opposite phases; a drive spring support unit; A vibrating component supply device comprising: a drive spring coupled to transfer components in opposite directions upon receiving an excitation force, characterized in that the drive spring support portion is coupled to a base by a plate spring. Vibrating parts supply device. (2) The vibrating section includes an electromagnet fixed core fixed to the drive spring support, coils respectively wound around yoke sections extending in opposite directions of the electromagnet fixed core, and both troughs facing the yoke section. The vibrating component according to item 1, characterized in that the vibrating component comprises a movable core fixed to a movable core, and the amount of current flowing through both coils is individually controlled by independent control means connected to a common AC power source. Feeding device.