JPS59118616A - Driving device for elliptical vibration parts feeder - Google Patents

Abstract

PURPOSE:To make an optimum transfer speed securable in an easy manner, by making a phase difference in each voltage to be fed to both horizontal and vertical driving electromagnets so as to be set to 60 deg. or 120 deg. by means of a phase selector switch. CONSTITUTION:A selector switch SW2 is changed over to a counterclockwise contact and a power switch SW1 is turned off. With this method, the voltage between R-S of a 3-phase AC power source is fed to a horizontal driving part 32A while the voltage between T-S is fed to a vertical driving part 32B respectively. If the selector switch SW2 is set to the 60 deg. side, vertical direction exciting force and horizontal direction exciting force being different in a phase of 60 deg. each are added to a pole. In this case, when the selector switch SW2 is changed over to the 120 deg. side, at the vertical driving part 32B, the selector switch SW2 can advance or delay the phase as far as 120 deg. according to whether to be the CW direction or the CCW direction rather than in case of the horizontal driving part 32A so that the phase difference can be set to its optimum 60 deg.. Thus, optimum transfer conditions can be secured without necessitating a highly accurate design.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a driving device for an elliptical vibrating parts feeder or an elliptical vibrating parts feeder.

An elliptical vibrating component feeder generally includes a component receiver; horizontally vibrating elastic means that supports the component receiver so that it can vibrate in the horizontal direction;
a horizontally movable electromagnet for horizontally vibrating the component receiver; a vertically lifting elastic means for vertically supporting the component receiver with vibrating ability; A commercial frequency three-phase AC power supply is provided to the horizontal drive electromagnet and the vertical drive electromagnet so as to provide a phase difference between the voltages supplied to the horizontal drive electromagnet and the vertical drive electromagnet. I'm trying to connect. It has been experimentally proven that with the above configuration, the parts receiver vibrates in an elliptical manner, and the parts are transferred on a spiral track formed on the inner circumference of the receiver.

Such an elliptical vibrating component feeder has two independent horizontal vibration systems and vertical vibration systems, and the resonant frequency of the horizontal vibration system is determined by the weight of the component receiver and the resiliency constant of the elastic means for horizontal vibration. The resonant frequency of the vertical vibration system is determined by the resonant frequency of the component receiver, the resiliency constant of the elastic means used for hanging the camera, etc. Also, in this type of vibrator, the driving force is small. In order to obtain a large amplitude, the resonant frequency of the system is generally designed to match the drive frequency by The above-mentioned optimum conditions can be obtained by connecting the commercial frequency three-phase AC power to each drive electromagnet yc in reverse so that each supply voltage has a phase difference of 60°. However, it is extremely difficult to design a bidirectional vibration system with exactly the same resonant frequency, and if there is a large difference in the resonant frequency, the excitation force, that is, the phase difference between the supply voltage and the vibration, will be A large difference occurs in the vibration system, and therefore, even if the supply voltage has a phase difference of 60°, the phase difference between the valley vibrations will deviate significantly from 60°, making it impossible to obtain optimal conditions.

The present invention has been made in view of the above-mentioned problems, and is an elliptical vibrating component in which the optimum conditions for the component transfer speed can be easily obtained by designing the resonant frequencies of the horizontal vibration system and the vertical direction imaging system to be exactly the same. The object of the present invention is to provide a drive device for a feeder. This object, according to the present invention, includes: a component receiver in which a spiral component transfer track is formed in the inner circumference; an elastic means for horizontal vibration that supports the component receiver so that it can vibrate in the horizontal direction; horizontal drive electromagnet for horizontally vibrating the receiver; vertical vibration elastic means for supporting the component receiver so that it can vibrate in the vertical direction; vertical drive for vertically vibrating the component receiver an elliptical vibrating component that includes an electromagnet and connects a commercial frequency three-phase AC power source to the horizontal drive electromagnet and the vertical drive electromagnet so that each voltage supplied to the horizontal drive electromagnet and the vertical drive electromagnet has a phase difference; In the feeder, a phase changeover switch is provided between either the horizontal drive electromagnet or the vertical drive electromagnet and the three-phase AC power supply, and by switching the changeover switch, the horizontal drive electromagnet This can be achieved by a driving device for an elliptical vibrating component feeder, characterized in that the phase difference between the voltages supplied to the vertical drive electromagnet is 60' or 120°.

Hereinafter, details of the present invention will be explained based on illustrated embodiments.

1. The structure of the elliptical vibrating parts feeder applied to this embodiment will be explained with reference to FIGS. 1 to 5.

In the figure, the elliptical vibrating parts feeder as a whole (1
) and is equipped with a known ball (2).

As shown in FIG. 5, a spiral track (3) is formed on the inner wall surface of the ball (2), and a conceptually illustrated component posture correction means (4) is provided at a suitable location on the downstream side of the spiral track (3). . Since various structures of this component posture correction means (4) are already well known, they are illustrated conceptually to simplify the drawing. At the discharge end of the truck (3) is a posture maintaining means (5).
is provided, and through this the parts in the desired posture are fed to a linear vibratory feeder (6).

The ball (2) is fixed to a cross-shaped upper movable frame (7) as shown in FIG. The four sets of stacked plates (9) facing the frame (8) are connected by the four ends (7a) of the upper movable frame (7) and the upper end of the stacked plates (9). The lower end of the stacked plate (9) is fixed with a bolt to the four hanging ends (8a) of the lower movable frame (3). They are aligned vertically.

An upper movable frame (7) is located in the center of the fixed frame Ql.
) A vertical drive electromagnet Qυ is fixed opposite the center of the
(1) Upper movable frame (7) facing the electromagnet Qυ
A vertical movable core a-field is fixed on the lower surface of the .

In addition, on opposite side walls of the fixed frame OQ, a pair of horizontal drive electromagnets (1
4a bar 14b) is fixed, and these electromagnets (14a) (
14b) K is wound with coils (15a) (1, 5) respectively. On the lower surface of the upper movable frame (7) there is a horizontal movable core 5a) (16b) facing the horizontal drive electromagnet (14aX14b). The fixed frame QO to which the QO is fixed has four leg parts αη formed in pairs therewith, and these leg parts αη are connected to three leg parts (1711 The spring mounting parts (17a) extending in the horizontal direction are formed opposite to each other, and as shown in FIG. 4 sets are fixed with bolts.The plates α91 (g) are stacked with spacers ■ as shown in Figure 1, and their central parts are fixed to the lower movable frame (8) with bolts. .

In the vibratory feeder (6), the drive section (2B (not shown as its structure is well known) is coupled to the movable block 60) by a pair of plate springs c!4), and the entire structure consists of a base block +221'& It is supported on the J:9 base by the anti-vibration rubber band 3). On the movable block side there is a long and narrow trough (511 is fixed and there are 3 stains. This trough l51
), as shown in Figure 5, both side walls (25
A groove (26+Y) is formed between a) (25b). On the upstream side of this groove (26), a light emitting element (
An overflow detection device consisting of 271 and an analyzing element (2) is installed in a V-circuit.

Although not shown in the groove (26), there is a light emitting element (opposed to the two forces).
A small hole C is formed, and when there is no component above it, the analyzer element C28) is configured to receive light from the generating element (two forces.Analyzer element (28) The output terminal of the control circuit (29) is connected to the control circuit (29).
The two output terminals G30+(31) are respectively connected to the input terminal aG oj of the parts feeder drive N path shown in FIG.

Next, details of the parts feeder drive circuit will be explained with reference to FIG.

The main drive (b) path is mainly horizontal, the drive section (32A),
Vertical drive unit (32B), low speed relay (G), overflow release relay (3-way, selector switch SW2, SW
From l to p, it is connected to a three-phase AC short circuit. That is, with the phase j being RlS and T, the it input terminal is the electric switch S.
W is connected to the horizontal drive unit (32A) via the heaters, and further connected to the vertical drive unit (32B) via changeover switches sw, sw, fr:. Similarly, the S input terminal is a slow-acting power switch SW1 and a fuse (38);
It is connected to the other input terminal of the horizontal drive section (32A) via Y, and further connected to the vertical drive section (32B) via changeover switches SW, 8W, and Y. Further, the T input terminal is connected to the vertical drive section (32B) via the late shift power zero switch SW, fuse (38), changeover switch SW, and V. Changeover switch sW, SW, vertical drive section (3
Two of the inputs of the J8XT are selectively supplied to the two input terminals of the J8XT.

Generally, a spiral track is formed on the ball in either a clockwise or counterclockwise direction, and the changeover switch SW is switched depending on this direction. The size changeover switch SW3 selects between the voltage supplied to the horizontal drive section (32A) and the voltage supplied to the vertical drive section (32A).
The phase difference with the voltage supplied to 32B) is 60° or 120°.
This is a switch for switching between degrees. That is, when switching to the changeover switch SW, the movable contact 01 (40) (
4υ (4 degrees are interlocked, but as shown in the figure, they are connected to the fixed contacts for clockwise direction (39a bar 40, a bar 41a% 42a), and the changeover switch SW is connected to the fixed contact for 60° direction (43
a), the vertical drive (32B)
The R input is supplied to the -10,000 input terminal, and the T input is supplied to the other input terminal.
When switching to CX41c) (42c), one manual power is supplied to the -10,000 input terminal of the vertical drive section (32B),
The S input is supplied to the other input terminal. That is, by switching the changeover switch 5Wtv, the vertical drive section (
32B) is supplied with a voltage that is 60° ahead or behind the horizontal drive unit (32A).

Changeover switch sWs, fixed contact for Y 120° (4
When switching to the 3-way side, change the changeover switch SW, and the vertical drive section (32B) K is the horizontal drive section (
32A) is supplied with a voltage that is 120 degrees ahead or behind in phase. In addition, the changeover switches sw, sw,
v Neutral fixed contact (39b, 40b) (41b, 42b, 43b) When switched to vertical drive unit (32B)
No voltage is applied to.

The low-speed state relay (c) and the overflow release relay (three are connected between the input terminal (36+ (31) and the input line, respectively, and their contacts S and Ro are connected to the horizontal drive unit (32A), respectively. , S provided in the vertical drive section (32B), these drive sections (32A) (32B)
Since the circuit configurations of are exactly the same, -10,000 horizontal drive units (
32A) will be explained below.

The -10,000 input terminal of the horizontal drive unit (32A) is connected to the horizontal drive electromagnetic coil (15a) (via the triac (351')).
15b), and the other input terminal is directly supplied to the other terminal of the same coil (158x15b).

A series circuit of a diac (36) and a diode c37) is connected to the control electrode of the triac 0ω, and a capacitor C1 is connected between the anode side of the diode (37) and the output side electrode of the triac (351). In addition, a triac (35
A resistor circuit for controlling the conduction angle is connected. That is,
This resistance circuit has a fixed resistance 8 and variable resistances R, , R.

4, 2 and relay contacts fLO, S are connected, fixed resistance R, relay contact 0, variable resistors R, , R, are connected in series, and variable resistor 2 and melon are connected in parallel to variable resistor 2. be done. By switching the relay contact Rs, either variable resistor 3 or R4 is selected. Variable resistance horses are triac (3
The variable resistance turtle is used to determine the maximum value of the two conduction angles, that is, the maximum value of the horizontal driving force.
Variable resistors R1 and 4 are used to adjust the horizontal driving force within this range. - 10,000 variable resistors are for high-speed transfer, and the other variable resistor fL
4 is for low speed transfer. A series circuit of a capacitor C and a resistor 6 is further connected in parallel to the triac (35), which acts as a surge killer for the three triacs.8, horizontal drive section (32A) and vertical drive section (3
It is assumed that the variable resistor R1 (2B) is adjusted in conjunction with the variable resistor R1 (not shown).

The embodiment of the present invention is constructed as described above, and its operation will be explained next. In driving the elliptical vibrating parts feeder (υ), this ball (2) is track (
3) is wound in a counterclockwise direction, so when the drive circuit shown in Fig. 6 is set and the selector switch SW is switched to the counterclockwise fixed contact side, and then the power switch SW is closed, the horizontal drive part (32A ) is supplied with the voltage between 几 and 8 of the three-phase AC power supply. On the other hand, the voltage between T-8 can be supplied to the vertical tail movement part (32B). Nao 6, selector switch SW3 is 60
Assume that the housing 5 is switched to °1ltlI as shown in the figure. Triac 35) is l-1,,,R2,几8,几,
conduction according to the resistance value of the resistor circuit composed of
A current having a magnitude corresponding to this conduction angle flows through the horizontal drive electromagnet coils (15a) (15b) and the vertical drive electromagnet coil (6). Note that since the relay 09 is not energized at this time, its contact SS is connected to the left fixed contact as shown. Therefore, a variable resistor R5 for high-speed transfer is connected in parallel with the variable resistor R5.

A half-wave current with a controlled conduction angle flows through the horizontal driving electromagnetic coil (15a and 15b) and the vertical moving electromagnetic coil (b), which generates an excitation force in the vertical direction that is 60 degrees out of phase with the ball (2). The horizontal excitation force is applied to the cutting edge.

This causes the ball (2) to vibrate in an ellipse at the frequency of the AC power source, as shown by B in Figure 4. (In the case of a commercial AC power source, 50) IZ or 60 Hz) B indicates the locus of a certain point, which is exaggerated in the figure. The length of this elliptical long sleeve can be changed by variable resistor 4 during high-speed transfer and by variable resistor 4 during low-speed transfer, but usually it is 0 to 3 mm.
In the elliptical vibrating parts feeder (1), the ball (2) is subjected to vertical vibration force by the vertical movement electromagnet Oη, and a pair of horizontal movement electromagnets (14a)
(14b) receives an excitation force in the horizontal direction, and the combination of vibrations in each direction becomes elliptical vibration, but generally the phase difference between vertical vibration and horizontal vibration is maximum around 60° for parts. The resonant frequency of the vertical vibration of the elliptical vibration (1), which has been experimentally confirmed to be able to obtain the transfer speed, is determined by the weight of the ball (2), the plate ti (one spring constant) The resonance frequency of the horizontal direction is determined by the weight of the ball (2), the spring constant of the board (9), etc., but from a structural engineer's perspective, these resonance frequencies It is difficult to make the frequencies exactly the same.Furthermore, in this type of vibrator, it is preferable to configure the resonance frequency so that it does not coincide with the state frequency, but this is also troublesome.

In this example, even if the vertical and horizontal resonant frequencies of the elliptical vibrating parts feeder (1) are designed to roughly match the drive frequency, the optimum vibration conditions can be obtained by changing the changeover switch S. . Generally, the phase difference between the excitation force and the vibration is determined by the ratio λ between the resonance frequency of the system and the frequency of the excitation force, and the viscosity coefficient θ of the spring.
When the resonant frequency of the system and the frequency of the excitation force completely match, the phase difference is 90°. λ is 1
When Llx is sufficiently small, the phase difference is O'', and when Lx'' is sufficiently large, it is 180°. When λ is around 1, the phase difference takes a value between 0° and 180°! However, this is due to the viscosity coefficient of the spring -C! A. For example, the board (
9) If the α rim is made of steel, the viscosity coefficient is small, so
Even when λ is around 1, the phase difference is equal to 0° at λ<■, and is equal to 180° when λ>1.

Therefore, if the vertical and horizontal resonant frequencies of the parts feeder (υ) are both the ffi working frequency frequency, but are smaller than this, the phase difference between the excitation force and vibration in each direction will be approximately 06, Therefore, when the changeover switch SW is switched to the 60° side, the phase difference between the vibrations in both directions is approximately 60°, and the optimum conditions confirmed by experiments can be obtained. The resonant frequencies in both directions are close to the drive frequency, but if they are larger than this, the phase difference between the excitation force and vibration in each direction is about 180°, and therefore the changeover switch SWs is set at 60°.
When switching to the side, the phase difference between the vibrations in both directions is about 60°, and the optimum condition, which was similarly confirmed through experiments, is obtained. -! Both vertical and horizontal resonant frequencies are close to the drive frequency, but one is larger than the other.
If the other is less sterile than this, the phase difference between the 10,000 excitation force and the vibration is about 180'', and the phase difference between the other excitation force and the vibration is about 0°.Therefore, the changeover switch SW, 6
When the switch is switched to 0° 11, the phase difference between the vibrations in the vertical and horizontal directions is determined by closing the changeover switch SW2 to the clockwise fixed contact side, but closing it to the counterclockwise fixed contact side. 180°+60°-240 depending on the dolphin
180"-60°=120°. This greatly deviates from the optimum phase difference of 60°.

However, according to this embodiment, the changeover switch SW, v120
By switching to the fixed contact on the ° side, the vertical drive section (3
2B) has a selector switch SW from the horizontal drive unit (32A).
, Since a voltage with a phase lead or delay of 120" is supplied depending on whether the V fixed contact is closed in the clockwise direction or the fixed contact in the counterclockwise direction, the vibration in the vertical and horizontal directions is The phase difference is 180° + 120° = 30
0° or 180°-120'' = 60°.

The ball (2) vibrates sinusoidally both vertically and horizontally, so when the phase difference is 300°, if the horizontal vibration is expressed as asinωt, the vertical vibration is expressed as bsin(ω
t +300°). However, t)3in(ωt
+300°) = bsin (360° ωt-60°
) = bsin(ωt −60°), so the phase difference between the vertical and horizontal vibrations is 60° (delay).

Actually, when parts are flowed on the track (3) of the ball (2), a voltage phase difference of 60'' or 120°, which has a high transfer speed, is selected by switching the changeover switch SW.

This is clearly visible to the naked eye; at lower transfer speeds and voltage phase differences, the parts jump irregularly, but at higher transfer speeds and voltage phase differences of 10,000, the parts flow smoothly.

The elliptical vibrating parts feeder (1) is driven as described above, and the vibrating feeder (6) connected thereto is also driven at the same time. As shown in the figure, when a large number of parts, for example electronic parts, are thrown into the ball (2), the parts move upward along the track (3) and move to the posture correcting means (4).
Once the desired posture has been corrected, the posture maintenance track (5
) is fed through the groove (26) of the vibrating feeder (6). The vibrating feeder (6) vibrates along a plane in the direction of the arrow as shown in Fig. 4, and the parts receive this vibration force and are transferred to the right in the groove (261fx). Parts may be continuously fed one by one from the feeder (6) to the next process, or a stopper may be provided at the discharge end of the groove (26) to temporarily stop the parts, and some conveyance means,
For example, parts may be picked up from above using a vacuum suction device and transported one by one to another location. In any case, the parts feeder (1) will feed one part at a time to the vibration feeder (6), but the groove under the light emitting element (27) □
When the parts come into contact with each other without leaving a gap at □□, the light from the light emitting element (2'D) will no longer be irradiated onto the analyzer element (to). If the parts are flowing, the light will be irradiated onto the analyzer element (c) again after a short time even if the part blocks the light, but if the light is not irradiated into the analyzer element for more than a predetermined time, an overflow state will occur. When the control circuit determines that Contact point R of 88 and vertical drive part (32B)
.

(normally closed contact) opens, and the horizontal electromagnetic coil (15a
The current flowing through the bar 15b) and the vertical drive electromagnet coil (6) becomes zero. Therefore, the elliptical vibrating parts feeder (υ) is stopped, and the supply of parts to the photographic feeder (6) is stopped.

Eventually, when the overflow state of the vibrating feeder (6) is released, that is, when a gap is created between the parts and light from the light emitting element (2η) is emitted to the analyzer element (281), the control circuit (
An overflow release signal is generated from the output terminal 1 and 2, which is supplied to the input terminal of the drive circuit after closing the output terminal. As a result, the relay (33) is energized, and the horizontal drive section (32A
) and the contact Rs of the vertical drive unit (32B) move to the left from the illustrated state and close to the fixed contact for low-speed transfer. As a result, the variable resistance R1 for low-speed transfer is connected in parallel to the variable resistance ratio, and the horizontal drive electromagnet coil (15a bar 15
b) and the vertical drive electromagnetic coil (6), a smaller current flows in the case of high-speed transfer. It is assumed that the resistance values of the variable resistors 1 and R1 are adjusted in advance.

Since the ball (2) starts vibrating with a small amplitude from a stopped state, the track (3), especially the component posture correction means (4)
8, and the parts before and after this start quietly and begin to be transferred in almost the same posture. If vibration is started with a large amplitude, the parts will receive a large inertial force and there is a risk that the posture will be disturbed, but in this embodiment, there is no such fear. The overflow release signal continues for a predetermined period of time (for which purpose the control circuit includes a timer) and then disappears. As a result, the contact (Ls) moves to the right in the figure again and is switched to the fixed contact for high-speed transfer. coil(
15a) (15b) A much larger current flows through the parts feeder (IJ), and the parts feeder (IJ) begins to operate with a larger width, and the parts are transferred again at high speed.

Although the 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 concept of non-invention.

For example, in the above embodiment, the plate springs (9) 4 were used as the elastic means for horizontal vibration and the elastic means for vertical vibration of the elliptical vibrating parts feeder, but other elastic means, such as elastic rubber, could be used. Good too. In the case of elastic rubber, its viscosity coefficient is large, so when the driving frequency, resonance frequency, and υ ratio λ are around 1, IJ
Although the phase difference between the ANIJ force (excitation force) and the vibration changes relatively slowly, the relationship between the component transfer speed and the vibration phase difference does not have a large difference in the vicinity of a phase difference of 60°. Very satisfactory results can be obtained.

However, various arrangements are possible.

Further, in the above embodiment, the phase changeover switch SW3 is configured to be manually switched, but it may also be configured with a semiconductor element and switched electrically.

As described above, according to the drive device of the elliptical vibrating component feeder of the present invention, the resonance frequencies of the horizontal vibration system and the vertical vibration system can be roughly designed, so the manufacturing cost y can be reduced. Moreover, production efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of an elliptical moving parts feeder to which an embodiment of the present invention can be applied, and FIG. 2 is a section taken along I-II in FIG.
3 is a bottom view of the elliptical vibrating parts feeder of FIG. 1, and FIG. 4 is a plan view of the elliptical vibrating parts feeder of FIG.
FIG. 5 is a side view of the elliptical vibrating parts feeder and the linear vibrating feeder connected thereto, FIG. 5 is a plan view thereof, and FIG. 6 is a drive circuit diagram of the elliptical vibrating parts feeder of FIG. 4. In the figure, (1)・・・・・・・・・・・・・・・・・・・・・
......Elliptical vibration parts feeder (2)...
・・・・・・・・・・・・・・・・・・・・・・・・
・・Ball (3 n・・・・・・・・・・・・・・・
··············· Tiger
(September...)
・・・・・・・・・・・・Horizontal vibration plate CLJ)・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・Suraku wJJ electromagnet (2), 1. ．． 10. ．． 6
0.110101. ．． 011191.11. ·Koi
(J4 (16a) 16b) ・・・・・・・・・Movable core (14a) (14b) ・・・・・・・・・・・・
・・Horizontal drive electromagnet (15a) (15b) ・・・
・・・・・・・・・Coil 01・・・・・・・・・
・・・・・・・・・・・・・・・・・・ Vertical movement plate Haneka, S, T・・・・・・・・・・・・・・・
The Sanwa AC b1 of the open frequency is connected to the power input terminal SW, ・・・・・・・・・・・・・・・・・・・・・
Medium phase selector switch Fig. 1 7'

Claims (1)

[Claims] A component receiver having a spiral component transfer track formed on the inner circumferential wall; Horizontal low-motion elastic means for supporting the component receiver so that it can vibrate in the horizontal direction: for horizontally vibrating the component receiver. horizontal drive electromagnet; vertical vibration elastic means for vertically vibratingly supporting the component receiver; a vertical drive electromagnet for vertically vibrating the component receiver; In an elliptical vibrating parts supply machine, a commercial frequency three-phase AC power source is connected to the horizontal drive electromagnet and the vertical drive electromagnet so as to have a phase difference in the valley voltage supplied to the vertical drive electromagnet. A phase changeover switch is provided between any one of the vertical driving electromagnets and the three-phase AC power supply, and by switching the changeover switch, the horizontal driving electromagnet and the vertical driving electromagnet are switched. The phase difference between the valley voltage supplied to the XIJ electromagnet is 6
A drive device for an elliptical vibrating parts feeder, characterized in that the angle is set at 0° or 120°.