WO2012023380A1

WO2012023380A1 - Vibration-type component conveying device

Info

Publication number: WO2012023380A1
Application number: PCT/JP2011/066585
Authority: WO
Inventors: 石河　智海; 尾崎　孝美
Original assignee: Ntn株式会社
Priority date: 2010-08-16
Filing date: 2011-07-21
Publication date: 2012-02-23
Also published as: KR101877578B1; TWI535644B; CN103052576B; TW201208959A; KR20130091665A; CN103052576A

Abstract

In a composite vibration-type component conveying device, the occurrence of a vertical direction vibration caused by a horizontal direction vibration can be suppressed at low cost. The vibration-type component conveying device is configured such that: an intermediate vibrating body (4) is provided between an upper vibrating body (2) on which a trough (component conveying member) is mounted and a base (3); the intermediate vibrating body (4) and the base (3) are coupled by a plate spring (5) used for horizontal vibration; and the upper vibrating body (2) and the intermediate vibrating body (4) are coupled by a plate spring (6) used for vertical vibration. In the vibration-type component conveying device, the plate spring (5) used for horizontal vibration is fixed at two fixed positions on the same horizontal line orthogonal to a component conveying direction. This can suppress occurrence of a vertical direction vibration caused by a horizontal direction vibration at low cost. As a result, when adjusting the horizontal and vertical direction vibrations separately, the horizontal direction vibration can be adjusted so as to hardly affect the vertical direction vibration, enabling a desired vibration suitable for the component conveying to be easily obtained.

Description

Vibrating parts conveyor

The present invention relates to a vibration type component conveying apparatus that conveys a component by vibrating a component conveying member by driving an excitation mechanism.

The vibration-type component conveying device has a configuration that can adjust the horizontal vibration and the vertical vibration of the component conveying member for the purpose of giving the component conveying member the optimum vibration for component conveyance. There is a formula (for example, see Patent Document 1).

As shown in FIG. 10, the component conveying device (straight forward feeder) described in Patent Document 1 has an intermediate vibration between a support member 102 of a trough (component conveying member) 101 and a base 103 installed on the floor. The body 104 is provided, the base plate 103 and the intermediate vibrating body 104 are connected by a first leaf spring (horizontal vibration leaf spring) 105 directed in the vertical direction, and a second leaf spring (vertical vibration directed in the horizontal direction). The first vibration is generated between the connecting plate 107 fixed to the trough 101 and the base 103 by connecting the trough support member 102 and the intermediate vibrating body 104 with a leaf spring 106). A mechanism 108 and a second vibration mechanism 109 that generates vibration in the vertical direction are provided.

Each of the

vibration mechanisms

108 and 109 includes

AC electromagnets

110 and 111 installed on the base 103 and a vibration plate 112 attached to the connection plate 107, and the electromagnets 110 of the

vibration mechanisms

108 and 109. , 111 by separately controlling the voltage applied to the trough 101, the horizontal vibration and the vertical vibration of the trough 101 can be adjusted respectively.

However, in the composite vibration type component conveying device as described above, since the horizontal vibration leaf springs are fixed at two fixed positions in the vertical direction, as shown in FIG. When it vibrates in the horizontal direction, a vibration having an amplitude Z is also generated in the vertical direction, and the vertical vibration caused by the horizontal vibration is added to the vertical vibration generated by the second vibration mechanism. Is transmitted to the component conveying member. Accordingly, the horizontal vibration of the component conveying member cannot be adjusted so as not to affect the vertical vibration, and it is difficult to actually apply the desired vibration to the component conveying member.

Also, in such a composite vibration type component conveying apparatus, generally, when trying to increase the component conveying speed, in order to increase the amplitude of horizontal vibration efficiently with less power, each excitation mechanism is installed horizontally in the trough. Drive at a frequency near the natural frequency of the direction. At this time, the vibration amplitudes in the horizontal direction and the vertical direction are generally such that the vibration amplitude in the horizontal direction is about several hundred μm and the vibration amplitude in the vertical direction is about several tens μm or less, that is, the vibration amplitude in the vertical direction is the vibration amplitude in the horizontal direction. It is adjusted to be about 1/10 or less of.

Here, as shown in FIG. 12, in the horizontal and vertical vibration spectrum waveforms when the trough is vibrated in the horizontal direction, the natural frequency F _{h in} the horizontal direction of the trough and the natural frequency in the vertical direction. in the case where the F _v is not distant only about 2 ~ 3 Hz is not large difference between the horizontal vibration amplitude V _h and vertical vibration amplitude V _v at the frequency F _h. Therefore, even if the first vibrating mechanism is driven at a frequency in the vicinity of the frequency _Fh which is the natural frequency of the trough in the horizontal direction to generate only the horizontal vibration, the trough has a relatively large amplitude in the vertical direction. There is a risk of generating vibration in the direction. If the vertical vibration amplitude is several tens of μm or more, it overlaps with the vertical vibration generated by the second vibration mechanism, making it difficult to adjust the trough vertical vibration. Can no longer be given to troughs.

On the other hand, if the vibration in the vertical direction of the component conveying member is detected and the detected value is fed back to the applied voltage setting circuit of the vibration mechanism for vertical vibration, the set voltage is controlled. There is a possibility that vibration can be realized, but in that case, a vibration sensor and feedback control circuit are required separately, and the load on the electromagnet also increases, which may significantly increase the manufacturing cost and running cost. Inevitable.

JP 55-84707 A

An object of the present invention is to make it possible to suppress the occurrence of vertical vibration caused by horizontal vibration at a low cost in a composite vibration type component conveying apparatus.

In order to solve the above problems, the present invention provides a component conveying member in which a component conveying path is formed, an upper vibrating body to which the component conveying member is attached, a base installed on a floor, and the upper vibrating body. An intermediate vibrating body provided between the base, a first elastic member connecting the intermediate vibrating body and the base, and a second elastic member connecting the upper vibrating body and the intermediate vibrating body. One of the first elastic member and the second elastic member is a horizontal vibration elastic member and the other is a vertical vibration elastic member, and the horizontal vibration elastic member and the first vibration mechanism are used as parts. In the vibration-type component conveying apparatus that applies a horizontal vibration to the conveying member and applies a vertical vibration to the component conveying member by the vertical vibration elastic member and the second vibration mechanism. Elastic member for the same horizontal line perpendicular to the parts conveyance direction And to fix a fixed two positions. As a result, as shown in FIG. 13, the horizontal vibration elastic member B is not deformed in the horizontal direction and does not lead to the vertical displacement, and it is caused by the vibration in the horizontal direction even if no expensive control means is provided. The occurrence of vertical vibration is suppressed.

On the other hand, the elastic member for vertical vibration is fixed at two fixed positions on the same horizontal line orthogonal to the component conveying direction, or fixed at two fixed positions on the same horizontal line parallel to the component conveying direction. That's fine.

Further, by making the natural frequency of the horizontal vibration elastic member different between the horizontal direction and the vertical direction, or by making the vertical rigidity of the horizontal vibration elastic member higher than the rigidity in the horizontal direction. Further, it is possible to more effectively suppress the vertical vibration caused by the horizontal vibration.

In the above configuration, as the horizontal vibration elastic member, a leaf spring having the front and back surfaces directed in the component conveyance direction can be used. Preferably, a plate spring having the front and back surfaces directed in the component conveyance direction is preferably used. It is good to use what provided the spacer between the fixed locations of each leaf | plate spring, arranging in multiple numbers along. As shown in FIG. 14, when the moment is applied to the intermediate vibrating body due to the inclination at the time of installation of the first vibration mechanism, the horizontal vibration elastic member is a single leaf spring having low torsional rigidity. Since the leaf spring C is twisted, this twist becomes torsional vibration accompanying horizontal vibration, causing the intermediate vibrating body to generate pitching vibration in the component conveyance direction, making it difficult to achieve the desired vibration optimal for component conveyance. is there. That is, even when a moment acts on the intermediate vibration member by using a member having a high torsional rigidity with a spacer interposed between a plurality of leaf springs as the elastic member for horizontal vibration, as shown in FIG. The twist of D is suppressed and it becomes easy to realize a desired vibration.

On the other hand, as the vertical vibration elastic member, a leaf spring having front and back surfaces directed in the vertical direction can be used.

Further, by making the natural frequency of the component conveying member different by 5 Hz or more between the horizontal direction and the vertical direction, a large difference in the horizontal and vertical vibration amplitudes in the horizontal natural frequency of the trough. Therefore, even when each excitation mechanism is driven at a frequency in the vicinity of the natural frequency of the trough in the horizontal direction, the amplitude of the vertical vibration caused by the horizontal vibration can be reduced.

Here, it is desirable that the natural frequency in the vertical direction of the component conveying member is larger than the natural frequency in the horizontal direction. In this way, since the rigidity in the vertical direction of the component conveying member can be increased, the amplitude of vertical vibration caused by horizontal vibration can be easily reduced. Also, when adjusting the natural frequency in the vertical direction, there is a limit to making it smaller than the natural frequency in the horizontal direction, but there is no limit to increasing the natural frequency, so that the adjustment can be easily performed.

Also, it is desirable to adjust the natural frequency in the horizontal direction and the natural frequency in the vertical direction of the component conveying member so that the values of integer multiples of 5 or less are relatively prime. An integer multiple of the natural frequency is a natural frequency having a vibration mode different from that of the natural frequency, so if the integral multiple of the natural frequency in the horizontal direction and the vertical direction of the component conveying member is the same or close, This is because the amplitude of the vibration in the vertical direction due to the vibration in the direction increases. Here, the value of the integer multiple is set to 5 or less because it is difficult to set each natural frequency unless the value is limited, and in the vibration mode when the natural frequency is larger than 5 times. This is because the vibration amplitude is reduced and the influence on the component conveying member is reduced.

Each excitation mechanism is composed of an electromagnet and a movable iron core, a reference waveform generating means for generating a reference waveform of an applied voltage in an applied voltage setting circuit to one of the electromagnets, and an amplitude with respect to the reference waveform Waveform amplitude adjusting means for adjusting is provided, and the applied voltage setting circuit for the other electromagnet is generated by the phase difference adjusting means for generating a waveform having a predetermined phase difference with respect to the reference waveform, and the phase difference adjusting means By providing waveform amplitude adjustment means to adjust the amplitude of the waveform so that the waveform, period, phase difference and amplitude of the voltage applied to each electromagnet can be controlled freely, horizontal vibration and vertical vibration Can be easily brought close to the desired vibration.

In addition, the voltage setting circuit for applying voltage to the electromagnet of each of the excitation mechanisms is provided with PWM signal generating means for converting a waveform whose amplitude is adjusted by the waveform amplitude adjusting means into a PWM (Pulse Width Modulation) signal, Each excitation mechanism can be driven by the PWM method.

As described above, the vibration type component conveying apparatus according to the present invention fixes the horizontal vibration elastic member that connects the upper vibrating body or the base and the intermediate vibrating body to two places on the same horizontal line orthogonal to the component conveying direction. Since it is fixed at the position, the occurrence of vertical vibration due to horizontal vibration is suppressed. Therefore, when adjusting the vibration in the horizontal direction and the vertical direction, the horizontal vibration can be adjusted so as to hardly affect the vertical vibration, and a desired vibration suitable for component conveyance can be easily realized. . Moreover, this configuration does not require a feedback control means and can be constructed at a low cost.

Also, by making the natural frequency of the component conveying member different by 5 Hz or more between the horizontal direction and the vertical direction, it is possible to more effectively suppress the occurrence of vertical vibration caused by the horizontal vibration.

Front sectional view of the parts conveying device (straight forward feeder) of the first embodiment Top view without trough in FIG. Side view of FIG. Schematic diagram of an applied voltage setting circuit of each excitation mechanism of the component conveying apparatus of FIG. Front sectional drawing which shows the modification of arrangement | positioning of the leaf | plate spring for vertical vibrations of FIG. Top view without trough in FIG. FIG. 5 is a graph showing a vibration spectrum waveform of the component conveying apparatus of FIG. Front sectional view of the component conveying apparatus of the second embodiment Top view without trough in FIG. Front view of a conventional parts conveyor (straight-line feeder) Explanatory drawing of vibration behavior of conventional leaf spring for horizontal vibration Graph showing vibration spectrum waveform of conventional parts conveyor Explanatory drawing of the normal deformation | transformation form of the elastic member for horizontal vibrations of this invention Explanatory drawing of torsional deformation of the elastic member for horizontal vibration of the present invention Explanatory drawing of the deformation | transformation form of another elastic member for horizontal vibrations of this invention Front view of an example of non-composite vibration type linear feeder Front view of compound vibration type linear feeder modified from Fig. 16 The front view which shows the modification of the rectilinear feeder of FIG. Front view of an example of a non-composite vibration bowl feeder FIG. 19 is a front view of a combined vibratory bowl feeder modified from the apparatus of FIG. The front view which shows the modification of the bowl feeder of FIG.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 9. 1 to 3 show a vibratory component conveying device (straight forward feeder) of the first embodiment. In this component conveying device, a trough (component conveying member) 1 in which a linear conveying path 1a is formed is attached to the upper surface of an upper vibrator 2, and between the upper vibrator 2 and a base 3 installed on the floor. An intermediate vibration body 4 is provided, the intermediate vibration body 4 and the base 3 are connected by a leaf spring 5 as a first elastic member, and the upper vibration body 2 and the intermediate vibration body 4 are a plate as a second elastic member. A first vibration mechanism 7 is provided which is connected by a spring 6 and generates a horizontal vibration between the intermediate vibration body 4 and the base 3, and a vertical vibration is generated between the upper vibration body 2 and the base 3. A second vibration mechanism 8 to be generated is provided.

The base 3 is provided with columnar leaf spring mounting portions 3a at both ends thereof, and is supported by a vibration isolation member (not shown) such as a vibration isolation rubber fixed to the floor surface.

The intermediate vibration body 4 is formed in a rectangular frame shape, and its edge in the short direction is opposed to the upper end of the leaf spring mounting portion 3a of the base 3 on the outer surface side, and the lower portion of the upper vibration body 2 on the inner surface side. Are arranged to face each other. Further, at the four corners on the outer peripheral side, leaf spring mounting portions 4a are provided that protrude in the component conveying direction (left and right direction in the figure).

The first leaf spring 5 has its one end at the leaf spring mounting portion of the base 3 so that the front and back surfaces are oriented in the component conveyance direction, and the fixed positions of both ends are located on the same horizontal line orthogonal to the component conveyance direction. The other end portion is fixed to the leaf spring mounting portion 4a of the intermediate vibrator 4 to 3a, thereby forming a horizontal vibration leaf spring (horizontal vibration elastic member) that supports the intermediate vibrator 4 so as to vibrate in the horizontal direction. Yes. The horizontal vibration leaf spring 5 has a horizontal thickness dimension that is considerably smaller than the vertical width dimension, the natural frequency in the horizontal direction is significantly different from the natural frequency in the vertical direction, and the rigidity in the vertical direction is horizontal. It is sufficiently higher than the rigidity in the direction.

On the other hand, the second leaf spring 6 has one end at the bottom of the upper vibrator 2 so that the front and back surfaces are oriented vertically and the fixed positions of both ends are located on the same horizontal line perpendicular to the component conveying direction. The other end portion is fixed to the edge in the longitudinal direction of the intermediate vibrating body 4 to form a vertical vibration leaf spring (vertical vibration elastic member) that supports the upper vibrating body 2 so as to vibrate in the vertical direction.

The first vibrating mechanism 7 includes an AC electromagnet 9 installed on the base 3 and a movable iron core 10 attached to the intermediate vibrating body 4 so as to face the electromagnet 9 with a predetermined interval. It consists of Although the movable iron core 10 is attached to the intermediate vibrator 4 in this example, it may be attached to the upper vibrator 2. On the other hand, the second vibration mechanism 8 includes an AC electromagnet 11 installed on the base 3, and a movable iron core 12 attached to the upper vibrator 2 so as to face the electromagnet 11 with a predetermined interval. It consists of

When the electromagnet 9 of the first vibration mechanism 7 is energized, an intermittent electromagnetic attractive force acts between the electromagnet 9 and the movable iron core 10, and due to this electromagnetic attractive force and the restoring force of the horizontal vibration leaf spring 5, A horizontal vibration is generated in the intermediate vibrating body 4, and this vibration is transmitted to the upper vibrating body 2 and the trough 1 through the vertical vibration leaf spring 6. Further, when the electromagnet 11 of the second vibration mechanism 8 is energized, an intermittent electromagnetic attractive force acts between the electromagnet 11 and the movable iron core 12, and this electromagnetic attractive force and the restoring force of the vertical vibration leaf spring 6. As a result, vertical vibrations are generated in the upper vibrating body 2 and the trough 1. And the components supplied to the trough 1 are conveyed along the linear conveyance path 1a by this horizontal vibration and vertical vibration.

Therefore, the horizontal vibration and the vertical vibration of the trough 1 can be adjusted by separately setting the voltages applied to the

electromagnets

9 and 11 of the

vibration mechanisms

7 and 8.

FIG. 4 shows a circuit for setting an applied voltage to the

electromagnets

9 and 11 of the

vibration mechanisms

7 and 8. The circuit of the first vibration mechanism 7 is provided with a reference waveform generating means 13 for generating a reference waveform of the applied voltage. The reference waveform generation means 13 generates a reference waveform corresponding to the set value of the type of waveform (for example, sine wave) and the period (frequency) of the waveform. On the other hand, the circuit of the second excitation mechanism 8 is provided with phase difference adjusting means 14 for generating a waveform having a predetermined phase difference with respect to the reference waveform generated by the reference waveform generating means 13.

In each of the

excitation mechanisms

7 and 8, the waveform generated by the reference waveform generating means 13 or the phase difference adjusting means 14 is adjusted to a predetermined amplitude by the waveform amplitude adjusting means 15, and the PWM signal generating means 16 After conversion to a PWM signal, the voltage is amplified by the voltage amplifying means 17 and applied to the

electromagnets

9 and 11. Thus, the horizontal vibration and the vertical vibration can be adjusted by freely controlling the waveform, period, phase difference and amplitude of the voltage applied to the

electromagnets

9 and 11, respectively. Note that when each excitation mechanism is not driven by the PWM method, the PWM signal generating means 16 becomes unnecessary.

This vibration type component conveying apparatus has the above-described configuration, and when vibration is generated in the intermediate vibrating body 4 by driving the first vibrating mechanism 7, two fixed positions on the same horizontal line orthogonal to the component conveying direction. The horizontal vibration leaf spring 5 fixed in step 1 is repeatedly deformed only in the horizontal direction and returned to the original state (see FIG. 11). Thereby, the vibration generated in the intermediate vibrating body 4 hardly includes vertical vibration, and is substantially only in the horizontal direction.

Also, since the horizontal vibration plate spring 5 has a large difference between the natural frequency in the horizontal direction and the natural frequency in the vertical direction, this also suppresses the occurrence of vertical vibration due to the vibration in the horizontal direction.

That is, in general, when trying to increase the component conveying speed with a complex vibration type component conveying device, each excitation mechanism is uniquely designed in the horizontal direction of the trough in order to efficiently increase the amplitude of horizontal vibration with less power. It is often driven at a frequency near the frequency. At this time, if the horizontal vibration frequency and the vertical vibration frequency of the horizontal vibration leaf spring are the same, or if they are only a few Hz apart, the intermediate vibration body generated by the horizontal vibration The vibration in the vertical direction cannot be ignored. However, in the component conveying device of this embodiment, since there is a sufficient difference between the natural frequency in the horizontal direction and the natural frequency in the vertical direction of the horizontal vibration leaf spring 5, the vertical vibration of the intermediate vibrating body 4 caused by the horizontal vibration. The vibration in the direction can be kept small.

Here, the horizontal vibration leaf spring can make a difference between the natural frequency in the horizontal direction and the natural frequency in the vertical direction even when the horizontal thickness dimension is larger than the vertical width dimension, for example. From the viewpoint of rigidity to be described later, it is preferable to adopt the shape as in this embodiment.

That is, in this embodiment, since the horizontal dimension of the horizontal vibration leaf spring 5 is formed to be considerably smaller than the vertical dimension, and the vertical rigidity thereof is sufficiently higher than the horizontal rigidity, the intermediate vibrator The vertical vibration of 4 can be further reduced.

As described above, in the component conveying device of this embodiment, the vertical vibration generated in the trough 1 is substantially only the vibration by the second vibration mechanism 8 and the vertical vibration leaf spring 6, so that the horizontal and vertical When adjusting the vibrations in the respective directions, the horizontal vibrations can be adjusted so as to hardly affect the vertical vibrations, and a desired vibration suitable for component conveyance can be easily applied to the trough 1.

5 and 6 show a modification of the arrangement of the vertical vibration leaf spring 6 of the first embodiment described above. In this modification, the vertical vibration leaf spring 6 is moved in the short direction of the upper vibration body 2 and the intermediate vibration body 4 at two fixed positions on the same horizontal line parallel to the component conveying direction (left-right direction in the figure). It is fixed to the edge.

Also, the trough 1 of this modification, as shown in FIG. 7, in the horizontal direction and the vertical direction of the vibration spectrum waveform of the trough 1 when vibrated trough 1 in the horizontal direction, the vertical direction of the natural frequency F _v is adjusted to increase or 5Hz than the natural frequency F _h in the horizontal direction, a large difference occurs in the horizontal direction of the vibration amplitude V _h and vertical vibration amplitude V _v at the natural frequency F _h of the horizontal It is like that. Further, the natural frequency F _v of the horizontal natural frequency F _h and vertical directions, each of 5 or less an integral multiple of the value is adjusted to be relatively prime. Thus, even when driving the respective vibrating

mechanism

7,8 at a frequency near the natural frequency F _h in the horizontal direction of the trough 1, it is possible to reduce the amplitude of the vibration in the vertical direction caused by the vibration in the horizontal direction .

This vibration amplitude in the vertical direction caused by the vibration in the horizontal direction is preferably as small and therefore too large natural frequency F _v in the vertical direction of the trough 1, the second pressurizing higher rigidity in the vertical direction There is a possibility that vertical vibrations cannot be generated by the vibration mechanism 8. Since the desired vibration amplitude in the vertical direction is about several tens of μm, the natural frequency F _v in the vertical direction is adjusted so that the vibration amplitude in the vertical direction caused by the vibration in the horizontal direction is about several μm to several tens of μm. do it.

8 and 9 show a second embodiment. In this embodiment, the intermediate vibrating body 4 and the base 3 are connected by an elastic member 18 for horizontal vibration instead of the plate spring 5 for horizontal vibration of the first embodiment. The elastic member 18 for horizontal vibration has two leaf springs 19 with the front and rear surfaces facing the component conveyance direction (left and right in the figure) arranged along the component conveyance direction, and between the fixed portions of the plate springs 19. A spacer 20 is provided, and is fixed at two fixed positions on the same horizontal line orthogonal to the component conveying direction, like the horizontal vibration leaf spring 5 of the first embodiment. The configuration of the other parts is the same as that of the first embodiment including the voltage setting circuit applied to the

electromagnets

9 and 11 of the

vibration mechanisms

7 and 8.

In the component conveying device of the second embodiment, the torsional rigidity of the horizontal vibration elastic member 18 is higher than that of the horizontal vibration leaf spring 5 of the first embodiment. Thus, even when a moment acts on the intermediate vibrating body 4, the horizontal vibration elastic member 18 is deformed only in the substantially horizontal direction without being twisted (see FIG. 15). Therefore, it is easier to realize a desired vibration suitable for component conveyance than the apparatus of the first embodiment.

In the second embodiment as well, as in the example shown in FIGS. 5 and 6, the vertical vibration leaf spring 6 is placed at the upper vibration body at two fixed positions on the same horizontal line parallel to the component conveying direction. 2 and the intermediate vibrating body 4 may be fixed to the lateral edges.

In each of the above-described embodiments, the first leaf spring that connects the intermediate vibration body and the base is a horizontal vibration leaf spring, and the second leaf spring that connects the upper vibration body and the intermediate vibration body is for vertical vibration. Although the leaf spring is used, conversely, the first leaf spring may be a vertical vibration leaf spring and the second leaf spring may be a horizontal vibration leaf spring. In addition, one leaf spring is disposed at each location, but two or more leaf springs may be used in an overlapping manner. In addition, the leaf springs are arranged at four locations for horizontal vibration and vertical vibration, but may be configured at two or more locations.

Furthermore, in each embodiment, a leaf spring is used for the horizontal vibration elastic member and the vertical vibration elastic member, but an elastic member other than the leaf spring can also be used. Moreover, although each vibration mechanism uses what consists of an electromagnet and a movable iron core, it is not restricted to this, What is necessary is just an actuator which can generate | occur | produce the same vibration force.

By the way, it is desirable that such a composite vibration type component conveying device can be manufactured by modifying an existing device that vibrates a component conveying member (not a composite vibration type) using a pair of inclined leaf springs. FIG. 16 shows an example of a non-composite vibration type linear feeder. In this linear feeder, a trough 21 in which a straight conveyance path 21a is formed is attached to the upper surface of the upper vibrating body 22, and the upper vibrating body 22 and a base 23 disposed below the upper vibrating body 22 are paired with a pair of front and rear inclined leaf springs. 24, a vibration mechanism 25 is provided between the upper vibrating body 22 and the base 23. The base 23 is supported by an anti-vibration member (not shown) such as an anti-vibration rubber fixed on the floor.

Each leaf spring 24 is attached to the upper vibrating body 22 and the base 23 in a posture inclined by the same angle to the upstream side of the transport path 21a with respect to a vertical plane orthogonal to the transport path 21a. The vibration mechanism 25 includes an AC electromagnet 26 attached to the base 23 and a movable iron core 27 attached to the upper vibrating body 22, and intermittent electromagnetic action acting between the electromagnet 26 and the movable iron core 27. The upper vibrating body 22 is vibrated by the suction force. Thereby, the trough 21 reciprocally vibrates integrally with the upper vibrating body 22 at a vibration angle equal to the inclination angle of the leaf spring 24 with respect to the horizontal plane, and the components supplied to the trough 21 are transported along the transport path 21a.

When this non-composite vibration type linear feeder is modified to create the composite vibration type linear feeder shown in FIG. 10, the intermediate vibration member 104 is attached to the trough 101 and the connection plate 107 for the vibration mechanism is attached. Arranging so as not to interfere with each other and securing the installation space for the two

excitation mechanisms

108 and 109 on the base 103 are major design constraints. For this reason, there are many cases in which a complex vibration type linear feeder has to be newly manufactured.

For this, it is conceivable that the structure of the compound vibration type linear feeder is as shown in FIG. In this linear feeder, a trough 31 in which a straight conveyance path 31a is formed is attached to the upper surface of the upper vibration body 32, and an intermediate vibration body 34 is disposed between the upper vibration body 32 and a base 33 disposed below the upper vibration body 32. Provided, the intermediate vibrator 34 and the base 33 are connected by a first leaf spring 35 arranged in the vertical direction, and the upper vibrator 32 and the intermediate vibrator 34 are arranged in the horizontal direction. A first vibration mechanism 37 is provided that is connected by a leaf spring 36 and generates a horizontal vibration between the intermediate vibration body 34 and the base 33, and a vertical direction is provided between the upper vibration body 32 and the intermediate vibration body 34. A second vibration mechanism 38 that generates vibration is provided. The base 33 is supported by an anti-vibration member (not shown) such as an anti-vibration rubber fixed on the floor.

Here, the trough 31, the base 33, the first leaf spring 35, and the first vibration mechanism 37 are diverted as they are from existing devices using inclined leaf springs (see FIG. 16). The upper vibrator of the existing device is also used in the lower part of the intermediate vibrator 34. Therefore, the intermediate vibrating body 34 and the base 33 each have mounting

surfaces

34a, 34b, 33a, 33b that can be mounted in a state where the first leaf spring 35 is inclined, and each of these mounting

surfaces

34a, 34b. , 33a, 33b and the first leaf spring 35 are provided with

spacers

39, 40 so that the first leaf spring 35 is directed in the vertical direction. Further, the intermediate vibrating body 34 is provided with a connecting portion 41 and a leaf spring mounting portion 42 on the upper surface side of the upper vibrating body of an existing apparatus, and the connecting portion 41 and the leaf spring mounting portion 42 are as in this example. Alternatively, they may be manufactured separately and combined, or may be manufactured integrally.

The first leaf springs 35 are arranged at two locations in the conveying direction of the trough 31, and the upper ends of the first leaf springs 35 are fixed to the

spacers

39 and 40 attached to the attachment surfaces 34a and 34b of the intermediate vibrator 34, and the lower ends thereof. Are fixed to spacers 40 and 39 attached to the attachment surfaces 33a and 33b of the base 33. On the other hand, the second leaf springs 36 are arranged at two locations in the conveying direction of the trough 31, the end on the center side of the trough 31 is fixed to the upper vibrator 32, and the end on the trough 31 end side is an intermediate vibrator. It is being fixed to the leaf | plate spring attaching part 42 of 34.

The first vibration mechanism 37 includes an AC electromagnet 43 attached to the base 33 and a movable iron core 44 attached to the intermediate vibrating body 34 so as to face the electromagnet 43 with a predetermined interval. Yes. On the other hand, the second vibrating mechanism 38 is movable to be attached to the upper vibrating body 32 so as to face the AC electromagnet 45 attached to the connecting portion 41 of the intermediate vibrating body 34 at a predetermined interval. It consists of an iron core 46.

The intermittent electromagnetic attractive force acting between the electromagnet 43 and the movable iron core 44 of the first vibration mechanism 37 causes the intermediate vibration member 34 to generate horizontal vibration, and this vibration is generated by the second plate. An intermittent electromagnetic attractive force that is transmitted to the upper vibrating body 32 and the trough 31 via the spring 36 and acts between the electromagnet 45 and the movable iron core 46 of the second vibrating mechanism 38 is generated by the upper vibrating body 32 and the trough 31. A vibration in the vertical direction is generated in 31 so that the components supplied to the trough 31 are transported along the linear transport path 31a.

Accordingly, by separately setting the voltages applied to the

electromagnets

43 and 45 of the

respective excitation mechanisms

37 and 38, the horizontal vibration and the vertical vibration of the trough 31 are independently adjusted to obtain a desired vibration. be able to. The same circuit as that shown in FIG. 4 is used as a circuit for setting the applied voltage to each

electromagnet

43, 45.

This composite vibration type linear feeder is configured as described above, and an intermediate vibration body is provided between the upper vibration body and the base, and a plate spring for generating horizontal vibration between the intermediate vibration body and the base. Since the plate spring for generating vertical vibration and the vibration mechanism are provided between the upper vibrator and the intermediate vibrator, respectively, the horizontal vibration and the vertical vibration are adjusted independently. Thus, a desired vibration suitable for component conveyance can be obtained.

Moreover, the trough, the base, the plate spring for horizontal vibration, and the excitation mechanism can be used as they are for the existing device using the inclined plate spring, and the upper vibration of the existing device can be used as part of the intermediate vibrator. Since the body can be used, it is easy to remodel existing equipment and can be manufactured at low cost.

FIG. 18 shows an example in which the arrangement of the vibration generating mechanisms in the horizontal direction and the vertical direction of the linear feeder shown in FIG. 17 is reversed. That is, in this modification, an intermediate vibrating body 50 is provided between the upper vibrating body 48 to which the trough 47 is attached and the base 49 disposed below the upper vibrating body 48, and the upper vibrating body 48 and the intermediate vibrating body 50 are placed in the vertical direction. The intermediate vibration body 50 and the base 49 are connected by a second plate spring 52 disposed in the horizontal direction, and the upper vibration body 48 and the intermediate vibration body are connected. 50 is provided with a first vibration mechanism 53 that generates horizontal vibration, and a second vibration mechanism 54 that generates vibration in the vertical direction is provided between the intermediate vibration body 50 and the base 49. .

As the trough 47, the upper vibrating body 48, the first leaf spring 51, and the first vibration mechanism 53, an existing device using an inclined leaf spring (see FIG. 16) is used as it is. The body 50 also uses an existing device base. Then, spacers 55, 56 are provided between the leaf

spring mounting surfaces

48 a, 48 b, 50 a, 50 b of the upper vibration body 48 and the intermediate vibration body 50 and the first leaf spring 51, so that the first leaf spring 51 is vertically Try to point in the direction. Further, the second leaf spring 52 is fixed at both ends to a leaf spring attachment portion 58 provided on the connection portion 57 on the lower surface side of the intermediate vibrating body 50 and the upper surface side of the base 49. The configuration of the other parts is the same as the example of FIG. 17 including the applied voltage setting circuit to the electromagnets of each excitation mechanism.

Therefore, also in this modified example, as in the example of FIG. 17, the horizontal vibration and the vertical vibration can be adjusted independently, and the existing apparatus can be easily modified by remodeling.

16 to 18 have been described with respect to the linear feeder, but the case of a bowl feeder is also conceivable.

FIG. 19 shows an example of a non-composite vibration type bowl feeder. In this bowl feeder, a bowl 61 having a spiral conveying path (not shown) formed on the inner surface is attached to the upper surface of the upper vibrating body 62, and the upper vibrating body 62 and a base 63 disposed below the upper vibrating body 62 are attached to the bowl feeder. A plurality of inclined leaf springs 64 arranged at equal intervals in the circumferential direction 61 are connected, and an excitation mechanism (not shown) is provided between the upper vibrating body 62 and the base 63. The base 63 is supported by a vibration isolating member (not shown) such as a vibration isolating rubber fixed on the floor.

Each leaf spring 64 is attached to the upper vibrating body 62 and the base 63 in a posture inclined by the same angle with respect to the vertical plane. The vibration mechanism is composed of an AC electromagnet attached to the base 63 and a movable iron core attached to the upper vibrating body 62, and the upper part is separated by an intermittent electromagnetic attraction acting between the electromagnet and the movable iron core. The vibrating body 62 is vibrated. Thereby, the bowl 61 is torsionally vibrated around the central axis integrally with the upper vibrating body 62, and the components supplied to the bowl 61 are transported along the spiral transport path.

On the other hand, it is conceivable that the structure of the complex vibration type bowl feeder is as shown in FIG. In this bowl feeder, a bowl 71 having a spiral conveying path (not shown) formed on the inner surface is attached to the upper surface of the upper vibrator 72, and between the upper vibrator 72 and a base 73 disposed below the upper vibrator 72. An intermediate vibration body 74 is provided, the intermediate vibration body 74 and the base 73 are connected by a first leaf spring 75 arranged in the vertical direction, and the upper vibration body 72 and the intermediate vibration body 74 are directed in the horizontal direction. A first vibration mechanism (not shown) is provided between the intermediate vibration body 74 and the base 73, and is connected by a second leaf spring 76. The upper vibration body 72 and the intermediate vibration are provided. A second vibration mechanism 77 for generating vertical vibration is provided between the bodies 74. The base 73 is supported by an anti-vibration member (not shown) such as an anti-vibration rubber fixed on the floor.

Here, as the bowl 71, the base 73, the first leaf spring 75, and the first vibration mechanism, those of an existing device (see FIG. 19) using an inclined leaf spring are used as they are. The upper vibration body of the existing device is also used in the lower part of the vibration body 74. Accordingly, the intermediate vibrating body 74 and the base 73 have mounting

surfaces

74a and 73a that can be mounted in a state where the first leaf spring 75 is inclined, respectively.

Spacers

78 and 79 are provided between the leaf spring 75 and the first leaf spring 75 is directed in the vertical direction. Further, the intermediate vibration body 74 is provided with a connecting portion 80 and a leaf spring mounting portion 81 on the upper surface side of the upper vibration body of an existing apparatus, and the connecting portion 80 and the leaf spring mounting portion 81 are as in this example. Alternatively, they may be manufactured separately and combined, or may be manufactured integrally.

The first leaf springs 75 are arranged at four positions in the circumferential direction of the bowl 71 at equal intervals, and the upper ends thereof are fixed to the spacers 78 attached to the attachment surface 74a of the intermediate vibrator 74, and the lower ends are used as the bases. It is fixed to a spacer 79 attached to the attachment surface 73a of the base 73. On the other hand, the second leaf springs 76 are arranged at two locations so as to face each other across the center of the bowl 71, and the end on the center side of the bowl 71 is fixed to the upper vibrating body 72. The portion is fixed to the leaf spring mounting portion 81 of the intermediate vibrator 74.

Although not shown in the drawings, the first vibration mechanism is constituted by an AC electromagnet attached to the base 73 and a movable iron core attached to the intermediate vibrating body 74 so as to face the electromagnet with a predetermined interval. Has been. On the other hand, the second vibration mechanism 77 is movable to be attached to the upper vibration body 72 so as to face the AC electromagnet 82 attached to the connecting portion 80 of the intermediate vibration body 74 with a predetermined interval. It consists of an iron core 83.

The intermittent electromagnetic attractive force acting between the electromagnet of the first vibration mechanism and the movable iron core causes the intermediate vibration body 74 to generate horizontal vibration (rotational vibration around the central axis of the bowl 71). The vibration is transmitted to the upper vibrating body 72 and the bowl 71 via the second leaf spring 76, and an intermittent electromagnetic attraction force acting between the electromagnet 82 and the movable iron core 83 of the second vibration mechanism 77. However, vertical vibrations are generated in the upper vibrator 72 and the bowl 71, and the components supplied to the bowl 71 are conveyed along the spiral conveyance path.

Therefore, by setting the applied voltages to the electromagnets of the respective excitation mechanisms separately, it is possible to obtain the desired vibration by adjusting the horizontal vibration and the vertical vibration of the bowl 71 independently of each other. Note that the same circuit as shown in FIG. 4 is used as a circuit for setting the applied voltage to each electromagnet.

This composite vibration type bowl feeder has the above-described configuration, and an intermediate vibration body is provided between the upper vibration body and the base, and a plate spring for generating horizontal vibration between the intermediate vibration body and the base. Since the plate spring for generating vertical vibration and the vibration mechanism are provided between the upper vibrator and the intermediate vibrator, respectively, the horizontal vibration and the vertical vibration are adjusted independently. Thus, a desired vibration suitable for component conveyance can be obtained.

In addition, the bowl, base, plate spring for horizontal vibration, and the vibration mechanism can be used as they are for existing devices using inclined plate springs, and the upper vibration of the existing device can be used as part of the intermediate vibrator. Since the body can be used, it is easy to remodel existing equipment and can be manufactured at low cost.

FIG. 21 shows an example in which the arrangement of the vibration generating mechanisms in the horizontal direction and the vertical direction of the bowl feeder shown in FIG. 20 is reversed. That is, in this modification, an intermediate vibration body 87 is provided between the upper vibration body 85 to which the bowl 84 is attached and the base 86 disposed below the upper vibration body 85, and the upper vibration body 85 and the intermediate vibration body 87 are arranged in the vertical direction. The intermediate vibration body 87 and the base 86 are connected by a second plate spring 89 disposed in the horizontal direction, and the upper vibration body 85 and the intermediate vibration body are connected to each other by the first leaf spring 88 disposed toward the head. A first vibration mechanism (not shown) that generates horizontal vibration is provided between the two, and a second vibration mechanism 90 that generates vertical vibration between the intermediate vibration body 87 and the base 86 is provided. Provided.

As the bowl 84, the upper vibrating body 85, the first leaf spring 88, and the first vibration mechanism, those of an existing device (see FIG. 19) using an inclined leaf spring are used as they are, and the intermediate vibrating body. The base of the existing apparatus is also used for 87. Then, spacers 91 and 92 are provided between the leaf

spring mounting surfaces

85a and 87a of the upper vibration body 85 and the intermediate vibration body 87 and the first leaf spring 88 so that the first leaf spring 88 is directed in the vertical direction. I have to. The second leaf spring 89 is fixed at both ends to a leaf spring attachment portion 94 provided on the lower surface side connecting portion 93 of the intermediate vibrating body 87 and the upper surface side of the base 86. The configuration of the other parts is the same as the example of FIG. 20 including the applied voltage setting circuit to the electromagnet of each vibration mechanism.

Therefore, also in this embodiment, as in the example of FIG. 20, the horizontal vibration and the vertical vibration can be adjusted independently, and the existing apparatus can be easily remodeled.

1 trough (component conveying member)
2 Upper vibration body 3 Base 4 Intermediate vibration body 5 First leaf spring (leaf spring for horizontal vibration)
6 Second leaf spring (plate spring for vertical vibration)
7 First vibration mechanism 8

Second vibration mechanism

9, 11

Electromagnets

10, 12 Movable iron core 18 Horizontal vibration elastic member 19 Leaf spring 20 Spacer

Claims

A component conveying member in which a component conveying path is formed, an upper vibrator to which the component conveying member is attached, a base installed on a floor, and an intermediate vibrator provided between the upper vibrator and the base; A first elastic member that connects the intermediate vibration body and the base, and a second elastic member that connects the upper vibration body and the intermediate vibration body, the first elastic member and the second elastic member. One of the elastic members is an elastic member for horizontal vibration, the other is an elastic member for vertical vibration, and the horizontal vibration elastic member and the first vibration mechanism impart horizontal vibration to the component conveying member, In the vibration type component conveying apparatus configured to apply vertical vibration to the component conveying member by the vertical vibration elastic member and the second vibration mechanism, the horizontal vibration elastic member is orthogonal to the component conveying direction. It is fixed at two fixed positions on the horizon. Vibratory parts feeder to.
The vibration type component conveying apparatus according to claim 1, wherein the elastic member for vertical vibration is fixed at two fixed positions on the same horizontal line orthogonal to the component conveying direction.
The vibration type component conveying apparatus according to claim 1, wherein the elastic member for vertical vibration is fixed at two fixed positions on the same horizontal line parallel to the component conveying direction.
4. The vibration type component conveying apparatus according to claim 1, wherein a natural frequency of the elastic member for horizontal vibration is made different between a horizontal direction and a vertical direction.
The vibration type component conveying apparatus according to any one of claims 1 to 4, wherein the horizontal vibration elastic member has a vertical rigidity higher than a horizontal rigidity.
6. The vibration type component conveying apparatus according to claim 1, wherein a plate spring having front and rear surfaces directed in the component conveying direction is used as the horizontal vibration elastic member.
As the horizontal vibration elastic member, a plurality of leaf springs whose front and back surfaces are directed in the component conveying direction are arranged along the component conveying direction, and a spacer is provided between fixed portions of the leaf springs. The vibration type component conveying apparatus according to any one of claims 1 to 5.
The vibration type component conveying apparatus according to any one of claims 1 to 7, wherein a plate spring having front and back surfaces directed in a vertical direction is used as the elastic member for vertical vibration.
9. The vibration type component conveying apparatus according to claim 1, wherein the natural frequency of the component conveying member is varied by 5 Hz or more between the horizontal direction and the vertical direction.
10. The vibration type component conveying device according to claim 9, wherein the natural frequency in the vertical direction of the component conveying member is made larger than the natural frequency in the horizontal direction.
11. The natural frequency in the horizontal direction and the natural frequency in the vertical direction of the component conveying member are adjusted so that values of integer multiples of 5 or less are relatively prime to each other. The vibratory component conveying device according to 1.
Each excitation mechanism is composed of an electromagnet and a movable iron core, a reference waveform generating means for generating a reference waveform of an applied voltage in an applied voltage setting circuit to one of the electromagnets, and an amplitude with respect to the reference waveform Waveform amplitude adjusting means for adjusting is provided, and the applied voltage setting circuit for the other electromagnet is generated by the phase difference adjusting means for generating a waveform having a predetermined phase difference with respect to the reference waveform, and the phase difference adjusting means 12. The vibration type component conveying apparatus according to claim 1, further comprising a waveform amplitude adjusting unit that adjusts the amplitude of the waveform.
13. A voltage signal generation circuit for converting a waveform, the amplitude of which is adjusted by the waveform amplitude adjusting means, into a PWM signal is provided in a circuit for setting an applied voltage to the electromagnet of each vibration mechanism. The vibratory component conveying device according to 1.