KR20120033273A - Vibrating parts feeder - Google Patents

Abstract

PURPOSE: A vibration part feeding apparatus is provided to easily generate vibration suitable for feeding parts by effectively preventing generation of vertical vibration resulting from horizontal vibration. CONSTITUTION: A vibration part feeding apparatus comprises a part feeding member(1), a top vibration body(2), a base(3), a middle vibration body(4), a first elastic member(5), and a second elastic member(6). The part feeding passage is formed in the part feeding member. The part feeding member is attached to the top vibration body. The base is installed on the floor. The middle vibration body is installed between the top vibration body and the base. The first elastic member connects the middle vibration body to the base. The second elastic member connects the top vibration body and the middle vibration body.

Description

VIBRATING PARTS FEEDER}

TECHNICAL FIELD This invention relates to the vibrating components conveying apparatus which vibrates a components conveyance member by the drive of an excitation mechanism, and conveys components.

The vibrating component conveying apparatus has a composite vibrating type structure which can adjust the vibration in the horizontal direction and the vertical direction of the component conveying member, respectively, for the purpose of imparting optimum vibration to the component conveying to the component conveying member. (For example, refer patent document 1).

As the above-mentioned composite vibrating component conveying apparatus, for example, the upper vibrating body 2 to which the trough 1 which is a component conveying member is attached like the straight feeder shown to FIG. 1 and FIG. 2 which is embodiment of this invention. Arranging the intermediate vibrating body 4 in a rectangular frame shape around the connecting device, connecting the intermediate vibrating body 4 and the base 3 with a first leaf spring (horizontal vibration elastic member) 5 facing in the vertical direction. The first vibration mechanism 7 which connects the upper vibrating body 2 and the intermediate vibrating body 4 to the horizontal direction in the second leaf spring (elastic member for vertical vibration) 6 to generate the horizontal vibration. ) And a structure having a second excitation mechanism 8 for generating vibration in the vertical direction.

The respective excitation mechanisms 7 and 8 are composed of alternating electromagnets 9 and 11 and movable iron cores 10 and 12, respectively, to be applied to the electromagnets 9 and 11 of the respective excitation mechanisms 7 and 8. By controlling the voltage separately, the vibration in the horizontal direction and the vibration in the vertical direction of the trough 1 can be adjusted respectively.

By the way, in such a compound vibrating linear feeder, generally, when the component conveying speed is to be increased, in order to increase the amplitude of the vibration in the horizontal direction efficiently with little power, each excitation mechanism is placed near the natural frequency in the horizontal direction of the trough. Drive at the frequency of. At this time, the vibration amplitude in the horizontal direction and the vertical direction is usually about several hundred μm in the horizontal direction and about tens of μm or less in the vertical direction, that is, the vibration amplitude in the vertical direction is 1 / s of the vibration amplitude in the horizontal direction. It is adjusted to be about 10 or less.

Here, as shown in Fig. 14, in the vibration spectrum waveforms in the horizontal and vertical directions of the trough when the trough is vibrated by the first excitation mechanism, the horizontal at the natural frequency F _h in the horizontal direction of the trough. When the difference between the vibration amplitude V _h in the direction and the vibration amplitude V _{v in} the vertical direction is only about 1 to 2 dB, the first excitation mechanism is driven at a frequency near the frequency F _h , which is a natural frequency in the horizontal direction of the trough. Even if only the vibration in the horizontal direction is to be generated, there is a fear that the vibration in the vertical direction having a relatively large amplitude is generated in the trough. When the vibration amplitude in the vertical direction is several tens of micrometers or more, it is difficult to adjust the vibration in the vertical direction of the trough because it overlaps with the vibration in the vertical direction generated by the second excitation mechanism, and the vibration that is optimal for conveyance of the parts is applied to the trough. It cannot be granted.

About this problem, it can be said in the same way also in a compound vibrating bowl feeder (for example, refer patent document 2, 3).

For example, as shown in FIG. 15, the bowl feeder of the said patent document 2 has a cross shape between the upper vibrating body 52 to which the bowl 51 which is a component conveyance member is attached, and the base 53 provided on the floor. The intermediate vibrating body 54 is connected, and the intermediate vibrating body 54 and the base 53 are connected to the first leaf spring (rotating vibration leaf spring) 55 facing in the vertical direction, and the upper vibrating body ( 52 and the intermediate vibrating body 54 are connected by a second leaf spring (vertical vibrating leaf spring) 56 facing in the horizontal direction, so as to vibrate in the horizontal rotation direction between the intermediate vibrating body 54 and the base 53. The first excitation mechanism (not shown) which produces | generates the sigma, and the 2nd excitation mechanism (not shown) which generate | occur | produces the vibration of a perpendicular direction between the upper vibrating body 52 and the base 53 are provided.

And each said excitation mechanism is comprised from the alternating current electromagnet provided on the base 53, and the movable core attached to the intermediate | middle vibrating body 54, and the upper vibrating body 52, and is applied to the electromagnet of each excitation mechanism. By controlling the voltage separately, the vibration in the horizontal rotational direction and the vibration in the vertical direction of the bowl 51 can be adjusted respectively.

By the way, in such a bowl type feeder of the composite vibration type, if the difference between the vibration amplitude V _h in the horizontal rotation direction and the vibration amplitude V _{v in} the vertical direction is only about 1 to 2 dB apart from the natural frequency F _h in the horizontal rotation direction of the bowl As in the case of the straight feeder described above, when the first excitation mechanism is driven at a frequency near the frequency F _h which is a natural frequency in the horizontal rotational direction of the bowl, the vertical vibration having a relatively large amplitude occurs in the bowl, The vibration in the vertical direction overlaps with the vibration in the vertical direction generated by the second excitation mechanism, making it difficult to adjust the vibration in the vertical direction of the bowl, and it is often impossible to give the bowl the vibration that is most suitable for conveying parts. .

Patent Document 1: Japanese Unexamined Patent Publication No. 55-84707 Patent Document 2: Japanese Patent Application Laid-Open No. 10-203623 Patent Document 3: Japanese Patent Application Laid-Open No. 11-116027

An object of the present invention is to suppress the occurrence of vibration in the vertical direction caused by vibration in the horizontal direction in a component vibration device of a composite vibration type.

MEANS TO SOLVE THE PROBLEM In order to solve the above-mentioned subject, this invention provides the component conveyance member in which the component conveyance path was formed, the upper vibrating body to which the said component conveying member is attached, the base provided on the floor, and the said upper vibrating body and a base, and are installed between it. And 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, wherein the first elastic member and the second elastic member are provided. One of the horizontal vibration elastic members and the other the vertical vibration elastic members, the horizontal vibration elastic member and the first vibration mechanism is applied to the component conveying member in the horizontal direction, the vertical vibration elasticity A vibrating component conveying apparatus in which a vibration in a vertical direction is applied to a component conveying member by a member and a second excitation mechanism, wherein the component conveying member is moved horizontally by the first exciting mechanism. At the time of the vibration to sikyeoteul natural frequency, the amplitude of vibration in the vertical direction than the amplitude of the horizontal vibrations occur in the parts feeding member has a configuration that is smaller than 6 dB. Thus, each excitation mechanism is driven at a frequency near the natural frequency in the horizontal direction of the component conveying member by causing a large difference between the horizontal vibration amplitude and the vertical vibration amplitude in the horizontal natural frequency of the component conveying member. Also in this case, the amplitude of the vibration in the vertical direction due to the vibration in the horizontal direction can be reduced.

Here, the frequency of the component conveying member is inherent in the vertical direction of the component conveying member, rather than the amplitude of the horizontal vibration generated when the component conveying member is vibrated with the first excitation mechanism and the frequency is the natural frequency in the horizontal direction of the component conveying member. It is preferable that the amplitude of the vibration in the vertical direction generated at the frequency is reduced by 3 dB or more. In this case, since a difference of 3 dB or more is attached to the peak value of the vibration amplitude in the horizontal direction and the vertical direction, it is possible to easily form a constitution that causes the amplitude difference of 6 dB or more.

In addition, when the horizontal vibration elastic member is fixed at two fixed positions on the same horizontal line perpendicular to the component conveyance direction, the horizontal deformation of the horizontal vibration elastic member does not lead to the displacement in the vertical direction, and the horizontal Generation of vibration in the vertical direction due to vibration in the direction can be suppressed.

On the other hand, the vertical vibration elastic member can be fixed at two fixed positions on the same horizontal line orthogonal to the component conveyance direction, or fixed at two fixed positions on the same horizontal line parallel to the component conveyance direction.

Moreover, this invention makes the said component conveyance path into the bowl in which the said component conveyance path was formed helically, for example, and makes the said horizontal vibration elastic member vibrate in the horizontal rotation direction to the said bowl with the said 1st excitation mechanism. It can apply to the vibrating components conveying apparatus (bowl feeder) which used as the elastic member for rotational vibration which gives the following.

As described above, when the present invention is applied to a vibratory bowl feeder, when the elastic member for rotational vibration is fixed at two fixed positions on the same horizontal line perpendicular to the vertical center line of the bowl, the elastic member for rotational vibration is provided. The deformation | transformation of the horizontal direction of rotation does not lead to the displacement of a vertical direction, and generation | occurrence | production of the vibration of the vertical direction resulting from the vibration of a horizontal rotation direction can be suppressed. On the other hand, the vertical vibration elastic member can be fixed at two fixed positions on the same horizontal line extending along the outer circumference of the upper vibrating body or the intermediate vibrating body. Moreover, as said elastic member for rotational vibration, the leaf spring which front and back faced in the horizontal direction can be used, and the leaf spring whose front and back surface faced the vertical direction can be used as said vertical vibration elastic member, respectively.

Moreover, the reference waveform generating means which constitutes each said excitation mechanism with an electromagnet and a movable iron core, and generate | occur | produces the reference waveform of an applied voltage to the applied voltage setting circuit to one of the electromagnets, and an amplitude with respect to the said reference waveform Waveform amplitude adjusting means for adjusting is provided, and an applied voltage setting circuit to the other electromagnet has phase difference adjusting means for generating a waveform having a predetermined phase difference with respect to the reference waveform, and an amplitude with respect to the waveform generated by the phase difference adjusting means. By providing the waveform amplitude adjusting means to adjust, and allowing the waveform, period, phase difference, and amplitude of the applied voltage to each electromagnet to be freely controlled, the vibration in the horizontal direction and the vibration in the vertical direction can be easily approximated to the desired vibration. have.

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

As described above, the vibrating component conveying apparatus of the present invention vibrates in the vertical direction than the amplitude of the horizontal vibration generated in the component conveying member when the component conveying member vibrates at the natural frequency in the horizontal direction with the first excitation mechanism. Since the amplitude of? Is reduced to 6 dB or more, generation of vibration in the vertical direction due to vibration in the horizontal direction can be effectively suppressed. Therefore, when adjusting the vibration in the horizontal direction and the vertical direction, respectively, the vibration in the horizontal direction can be adjusted so as to hardly affect the vibration in the vertical direction, so that the desired vibration suitable for conveying parts can be easily realized.

BRIEF DESCRIPTION OF THE DRAWINGS It is front sectional drawing of the component conveyance apparatus (straight feeder) of 1st Embodiment.
FIG. 2 is a top view excluding the trough of FIG. 1.
FIG. 3 is a schematic diagram of an applied voltage setting circuit of each excitation mechanism of the component transfer device of FIG. 1.
FIG. 4 is a graph showing the vibration spectral waveform of the component carrier of FIG. 1. FIG.
5 is a front sectional view showing a modification of the leaf spring arrangement of FIG.
6 is a top view excluding the trough of FIG. 5.
7 is a top view excluding troughs of another modification of the leaf spring arrangement of FIG.
It is a front view of the component conveyance apparatus (bowl feeder) of 2nd Embodiment.
9 is a top view excluding the bowl of FIG. 8.
10 is a longitudinal cross-sectional view of FIG. 8.
FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 10.
12 is a cross-sectional view taken along the line XII-XII of FIG. 10.
13A and 13B are graphs illustrating an application example of an adjustment method of the vibration characteristics of the bowl of the component conveying apparatus of FIG. 10.
It is a graph which shows the vibration spectral waveform of the conventional component conveyance apparatus.
15 is a partially cutaway perspective view of a conventional component conveying apparatus (bowl feeder).

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on FIG. 1 to 7 show a first embodiment. As shown in FIG. 1 and FIG. 2, this component conveying apparatus attaches the trough (part conveying member) 1 in which the linear conveyance path 1a was formed to the upper surface of the upper vibrating body 2, and The intermediate | middle vibrating body 4 of a rectangular frame shape is arrange | positioned around the vibrating body 2, and the 1st leaf spring (elastic member for horizontal vibration) which made the intermediate vibrating body 4 and the base 3 face in the vertical direction ( 5), and the upper vibrating body 2 and the intermediate vibrating body 4 are connected by a second leaf spring (vertical vibration elastic member) 6 facing in the horizontal direction, and the intermediate vibrating body 4 and the base are connected. The first excitation mechanism 7 for generating the vibration in the horizontal direction between the (3), and the second excitation mechanism 8 for generating the vibration in the vertical direction between the upper vibrating body 2 and the base (3) It is a vibratory straight feeder installed. The base 3 is supported by a dustproof member (not shown) such as dustproof rubber fixed to the bottom surface.

The first excitation mechanism 7 is provided with an alternating electromagnet 9 provided on the base 3 and a movable iron core 10 attached to the intermediate vibrating body 4 so as to face the electromagnet 9 at a predetermined interval. ) On the other hand, although the movable iron core 10 was attached to the intermediate | middle vibrating body 4 in this example, you may make it adhere to the upper vibrating body 2. On the other hand, the second excitation mechanism 8 is a movable iron core attached to the upper vibrating body 2 so as to face the alternating electromagnet 11 provided on the base 3 at a predetermined interval with the electromagnet 11. It consists of 12.

When the electromagnet 9 of the 1st excitation mechanism 7 is energized, an intermittent electromagnetic attraction force acts between the electromagnet 9 and the movable iron core 10, and the electromagnetic attraction force and the restoring force of the first leaf spring 5 are applied. As a result, a horizontal vibration occurs in the intermediate vibrating body 4, and the vibration is transmitted to the upper vibrating body 2 and the trough 1 through the second leaf spring 6. In addition, when the electromagnet 11 of the second excitation mechanism 8 is energized, an intermittent electron attraction force acts between the electromagnet 11 and the movable iron core 12, and the electromagnetic attraction force and the second leaf spring 6 By the restoring force, vibration in the vertical direction occurs in the upper vibrator 2 and the trough 1. And the component supplied to the trough 1 is conveyed along the linear conveyance path 1a by the vibration of this horizontal direction, and the vibration of a vertical direction.

Therefore, by setting the voltages applied to the electromagnets 9 and 11 of the respective excitation mechanisms 7 and 8 separately, the vibration in the horizontal direction and the vibration in the vertical direction of the trough 1 can be adjusted respectively.

3 shows a circuit for setting an applied voltage to the electromagnets 9 and 11 of the respective excitation mechanisms 7, 8. In the circuit of the first excitation mechanism 7, reference waveform generating means 13 for generating a reference waveform of an applied voltage is provided. The reference waveform generating means 13 generates a reference waveform in accordance with a set value of a waveform type (for example, a sine wave) and a 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 the circuits 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 the amplitude determined by the waveform amplitude adjusting means 15, and PWM is generated. After converting the signal into a PWM signal by the signal generating means 16, the voltage amplifying means 17 is stepped up and applied to the respective electromagnets 9 and 11. Thereby, the waveform, period, phase difference, and amplitude of the voltage applied to each of the electromagnets 9 and 11 can be freely controlled to adjust the vibration in the horizontal direction and the vibration in the vertical direction, respectively. On the other hand, when the excitation mechanism is not driven by the PWM system, the PWM signal generation means 16 becomes unnecessary.

Here, as shown in FIG. 4, the trough 1 has a vibration spectrum in the horizontal and vertical directions of the trough 1 when the trough 1 is vibrated with the first excitation mechanism 7. in the waveform, than the amplitude v _h of the horizontal vibration caused when the frequency to the natural frequency F _h in the horizontal direction, the amplitude of the vertical oscillation occurs when the frequency in the vertical natural frequency F _v v _v Is reduced to 3 dB or more. As a result, the vibration amplitude V _v in the vertical direction is adjusted to be 6 dB or more smaller than the vibration amplitude V _{h in the} horizontal direction when vibrated at the natural frequency F _h in the horizontal direction. Thus the oscillation amplitude V _h and the vibration amplitude V _v large difference, each having mechanism (7,8) by making animation in the vertical direction in the horizontal direction according to the natural frequency F _h in the horizontal direction of the trough (1) bit Even when the rough 1 is driven at a frequency near the natural frequency F _h in the horizontal direction, the vibration amplitude in the vertical direction due to the vibration in the horizontal direction can be reduced.

As described above, this vibrating component conveying apparatus can effectively suppress the generation of vibration in the vertical direction due to the vibration in the horizontal direction, so that the vibration in the horizontal direction is vertical when adjusting the vibration in the horizontal direction and the vertical direction, respectively. It can be adjusted so that the vibration of the direction is hardly influenced, and the desired vibration suitable for conveyance of parts can be easily given to the trough 1.

5 and 6 show a variant of the arrangement of the first leaf springs 5. In this modified example, a columnar leaf spring attachment portion 3a is provided on both ends of the base 3 so that the first leaf spring 5 is perpendicular to the component conveyance direction (left and right direction in the drawing). It is fixed to the leaf | plate spring attachment part 3a of the intermediate | middle vibrating body 4 and the base 3 in two fixed positions on a horizontal line. By doing in this way, the deformation of the horizontal direction of the 1st leaf spring 5 does not lead to a displacement of a vertical direction, and can generate | occur | produce the vibration of the vertical direction resulting from the vibration of a horizontal direction much more effectively.

7 is based on the example of FIG. 5, 6 mentioned above, and the 2nd leaf spring 6 is connected with the upper vibrating body 2 in two fixed positions on the same horizontal line orthogonal to a component conveyance direction. The example fixed to the intermediate | middle vibrating body 4 is shown.

8 to 12 show a second embodiment. This component conveying apparatus attaches the bowl (part conveying member) 21 in which the spiral conveyance path (not shown) was formed in the inner surface to the upper surface of the disk shaped upper vibrating body 22, and has the upper vibrating body 22 and the bottom. A cylindrical intermediate vibrating body 24 is provided between the base 23 provided above, and the intermediate vibrating body 24 and the base 23 are the leaf springs 25 as a 1st elastic member (elastic member for horizontal vibration). The upper vibrator 22 and the intermediate vibrator 24 by means of a leaf spring 26 as a second elastic member (elastic member for vertical vibration), and thus the intermediate vibrator 24 and the base 23. Between the upper vibrating body 22 and the base 23, a second exciting mechanism 28 for generating a vibration in the vertical direction is provided between the first vibration mechanism 27 for generating vibration in the horizontal rotation direction. One vibratory bowl feeder.

The base 23 fixes the block-shaped leaf spring attachment member 30 to the upper surface of the rectangular base plate 29, and the disk-shaped electromagnet mounting plate 31 is fixed to the upper surface of the leaf spring attachment member 30. The base plate 29 is fixed and supported by a dustproof member (not shown) such as dustproof rubber fixed on the floor, and the plate spring attachment member 30 and the electromagnet mounting plate 31 are intermediate vibrators 24. It is inserted at the bottom of the.

As for the said intermediate | middle vibrating body 24, the 1st leaf spring attachment part 24a cut out from the lower end, and the 2nd leaf spring attachment part 24b which protrude from the upper end are provided in four at equal intervals in the circumferential direction, respectively. . The plate spring attachment member 30a of the base 23 is formed with a plate spring attachment portion 30a at a position corresponding to the first plate spring attachment portion 24a of the intermediate vibrating body 24. In the vibrator 22, a leaf spring attachment portion 22a is formed on one side of the intermediate vibrator 24 in which the second leaf spring attachment portion 24b is inserted.

The first leaf spring 25 has its front and rear surfaces facing in the horizontal rotation direction, and one end thereof is positioned on the same horizontal line perpendicular to the vertical center line O of the bowl 21 in the horizontal vibrating direction ( The other end portion is fixed to the first leaf spring attachment portion 24a of 24, and the other end is fixed to the leaf spring attachment portion 30a of the leaf spring attachment member 30 of the base 23, so that the intermediate vibrating body 24 is horizontal. It is a plate spring for rotational vibration (elastic member for rotational vibration) which supports so that a vibration is possible in a rotational direction.

On the other hand, in the second leaf spring 26, the front and rear surfaces thereof face the vertical direction, and one end thereof is positioned on the same horizontal line extending along the outer periphery of the upper vibrator 22, so that the front and rear surfaces thereof face the vertical direction. The other end is fixed to the leaf | plate spring attachment part 22a of 22, respectively, by the 2nd leaf | plate spring attachment part 24b of the intermediate | middle vibrating body 24, and supports the upper vibrating body 22 so that a vibration can be carried out in a vertical direction. It is a vertical vibration leaf spring.

Moreover, the said 1st excitation mechanism 27 is an intermediate | middle vibrating body so that it may face the alternating current electromagnet 32 provided on the electromagnet mounting board 31 of the base 23, and this electromagnet 32 at predetermined intervals. It consists of the movable iron core 33 attached to the inner peripheral surface of 24. On the other hand, the movable iron core 33 is attached to the intermediate vibrating body 24 in this example, but may be attached to the upper vibrating body 22. On the other hand, the second excitation mechanism 28, the upper vibrating body (34) to face the AC electromagnet 34 provided on the electromagnet mounting plate 31 of the base 23 at a predetermined interval with the electromagnet 34 ( It consists of the movable iron core 35 attached to the lower surface of 22).

When the electromagnet 32 of the first excitation mechanism 27 is energized, an intermittent electromagnetic attraction force acts between the electromagnet 32 and the movable iron core 33, and the electromagnetic attraction force and the restoring force of the plate vibration 25 for rotational vibrations. As a result, vibration in the horizontal rotational direction is generated in the intermediate vibrating body 24, and the vibration is transmitted to the upper vibrating body 22 and the bowl 21 through the vertical vibrating leaf spring 26. In addition, when the electromagnet 34 of the second excitation mechanism 28 is energized, an intermittent electromagnetic attraction force acts between the electromagnet 34 and the movable iron core 35, and the electromagnetic attraction force and the leaf spring 26 for vertical vibration are applied. Due to the restoring force, vibrations in the vertical direction occur in the upper vibrator 22 and the bowl 21. And the component supplied to the bowl 21 is conveyed along the said spiral conveyance path by the vibration of this horizontal rotation direction, and the vibration of a vertical direction.

Therefore, by setting the voltages applied to the electromagnets 32 and 34 of the respective excitation mechanisms 27 and 28 separately, the vibration in the horizontal direction of rotation of the bowl 21 and the vibration in the vertical direction can be adjusted, respectively. In addition, as a circuit which sets an applied voltage to each electromagnet 32 and 34, the same thing as shown in FIG. 3 is used.

Here, the bowl 21 is the same as in the case of the trough 1 of the first embodiment (see FIG. 4), and the bowl 21 when the bowl 21 is vibrated by the first excitation mechanism 27 is used. In the vibration spectral waveform in the horizontal rotation direction and the vertical direction, the frequency is set to the natural frequency F _v in the vertical direction than the amplitude V _h of the vibration in the horizontal rotation direction when the frequency is set to the natural frequency F _h in the horizontal rotation direction. The amplitude of vibration in the vertical direction, V _v ', is reduced by 3 dB or more. As a result, the vibration amplitude in the vertical direction is larger than the vibration amplitude V _{h in the} horizontal rotation direction when vibrated at the natural frequency F _h in the horizontal rotation direction. V _v is adjusted to be less than 6 dB. Thus, the horizontal rotational direction vibration amplitude V _h and the vibration amplitude V _v mechanism (27, 28) a large difference, with respective by having animation in the vertical direction according to the natural frequency F _h in the horizontal direction of rotation of the bowl (21) Even when driven at a frequency near the natural frequency F _{h in} the horizontal rotation direction of the bowl 21, the amplitude of the vibration in the vertical direction due to the vibration in the horizontal rotation direction can be reduced.

Alternatively, the following adjustment method may be employed as an application example of the vibration characteristic adjustment method of the bowl 21.

That is, in the vibration spectral waveform in the horizontal rotational direction and the vertical direction of the bowl 21 when the bowl 21 is subjected to vibration in the horizontal rotation direction, as shown in FIG. 13A, the bowl 21 is used. horizontal rotation natural frequencies F _h and a natural frequency in the vertical direction of the direction of the F _v is 2? 3 Hz extent outside the case is not off, the frequency F _h horizontal rotation direction of the vibration amplitude V _h and the vibration amplitude in the vertical direction in the Even if the difference between V _v is not so large, the first excitation mechanism 27 is driven at a frequency near the frequency F _h which is a natural frequency in the horizontal rotation direction of the bowl 21 to generate only the vibration in the horizontal rotation direction. ), There is a fear that vibration in the vertical direction having a relatively large amplitude is generated.

Therefore, as shown in Fig. 13B, when the natural frequency F _v in the vertical direction of the bowl 21 is adjusted to be 5 Hz or more larger than the natural frequency F _{h in} the horizontal rotation direction, the intrinsic in the horizontal rotation direction A large difference occurs between the vibration amplitude V _{h in} the horizontal rotation direction and the vibration amplitude V _v in the vertical direction at the frequency F _h , and the excitation mechanisms 27 and 28 are similar to the case in which the adjustment method is performed. Even when driven at a frequency near the natural frequency F _h in the horizontal rotation direction, the amplitude of the vibration in the vertical direction due to the vibration in the horizontal rotation direction can be reduced.

Here, the natural frequency F _v in the vertical direction of the bowl 21 may be adjusted to be 5 Hz or more smaller than the natural frequency F _{h in the} horizontal rotation direction, but it is larger than the natural frequency F _{h in the} horizontal rotation direction as in the application example. It is preferable. When the natural frequency F _v in the vertical direction is increased, the rigidity in the vertical direction of the bowl 21 can be increased, so that the amplitude of the vibration in the vertical direction due to the vibration in the horizontal rotational direction is easily reduced. Moreover, even when adjusting the natural frequency F _v of a vertical direction, although there exists a limit in making it smaller than the natural frequency F _h of a horizontal rotation direction, since there is no limit in making it larger, adjustment can be performed easily.

Furthermore, the natural frequency F _{h in} the horizontal rotational direction of the bowl 21 and the natural frequency F _v in the vertical direction are preferably adjusted so that the values of integer multiples of 5 or less each have a mutual relationship. Since the integral multiple of the natural frequency is a natural frequency having a vibration mode different from the natural frequency, when the integer multiple of the natural frequency F _h and F _v in the horizontal rotational direction and the vertical direction of the bowl 21 becomes the same value or a close value, This is because the amplitude of the vibration in the vertical direction due to the vibration in the horizontal rotation direction increases. Here, if the value of the integer multiple is 5 or less, it is difficult to set the respective natural frequencies F _h and F _v unless the value is not limited, and the vibration frequency becomes larger than 5 times the natural frequencies F _h and F _v . This is because the vibration amplitude in the mode is small, and the influence on the bowl 21 is small.

On the other hand, the smaller the vibration amplitude in the vertical direction due to the vibration in the horizontal rotation direction of the bowl 21 is, the more preferable. Therefore, if the natural frequency F _v in the vertical direction of the bowl 21 is too large, the rigidity in the vertical direction is increased. There is a possibility that the second excitation mechanism 28 does not cause vibration in the vertical direction. Since the desired vibration amplitude in the vertical direction is about several tens of micrometers, the natural frequency F _v in the vertical direction may be adjusted so that the amplitude of the vibration in the vertical direction resulting from the vibration in the horizontal rotational direction is several micrometers to several tens of micrometers.

In addition, in this 2nd Embodiment, since the rotating vibration leaf spring 25 is being fixed in two fixed positions on the same horizontal line orthogonal to the vertical centerline O of the bowl 21, the leaf vibration spring spring ( The deformation in the horizontal rotation direction of 25) does not lead to the displacement in the vertical direction, so that the occurrence of vibration in the vertical direction due to the vibration in the horizontal rotation direction can be more effectively suppressed.

As described above, the vibration bowl feeder of the second embodiment can also effectively suppress the generation of vibration in the vertical direction due to the vibration in the horizontal rotation direction, similarly to the vibration straight feeder of the first embodiment. When adjusting the vibrations in the vertical direction and the vibration in the vertical direction, the vibration in the horizontal rotation direction can be adjusted so as to hardly affect the vibration in the vertical direction, so that the desired vibration suitable for conveying parts can be easily provided to the bowl 21.

In each of the embodiments described above, the first leaf spring connecting the intermediate vibrating body and the base is used as the horizontal vibration elastic member, and the second leaf spring connecting the upper vibrating body and the intermediate vibration body is used as the vertical vibration elastic member. On the contrary, the first leaf spring may be configured to be an elastic member for vertical vibration, and the second leaf spring may be an elastic member for horizontal vibration. In addition, although the leaf | plate spring was arrange | positioned one by one in each site | part, you may overlap and use two or more sheets. In addition, although four leaf springs were arrange | positioned by four places for a horizontal vibration and a vertical vibration, you may comprise two or more.

Moreover, in each embodiment, although the leaf spring is used for the elastic member for horizontal vibration and the elastic member for vertical vibration, elastic members other than a leaf spring can also be used, of course. In addition, although each excitation mechanism uses the thing containing an electromagnet and a movable iron core, it is not limited to this, What is necessary is just the actuator which can generate the same excitation force.

1: Trough (part conveying member) 2: Upper vibrating body
3: base 4: intermediate vibrating body
5: first leaf spring (elastic member for horizontal vibration)
6: second leaf spring (elastic member for vertical vibration)
7: first excitation mechanism 8: second excitation mechanism
9, 11: electromagnet 10, 12: movable iron core
21 bowl (part conveying member) 22: upper vibrating body
23: base 24: intermediate vibrating body
25: 1st leaf spring (elastic member for rotation vibration)
26: 2nd leaf spring (elastic member for the vertical vibration)
27: first exciting mechanism 28: second exciting mechanism
32, 34: electromagnet 33, 35: movable iron core

Claims (13)

A component conveying member having a component conveying path, an upper vibrating body to which the component conveying member is attached, a base provided on the floor, an intermediate vibrating body provided between the upper vibrating body and the base, and the intermediate vibrating body and the base And a second elastic member connecting the upper vibrating body and the intermediate vibrating body, wherein one of the first elastic member and the second elastic member connects the elastic member for horizontal vibration, and the other. Is a vertical vibration elastic member, the horizontal vibration elastic member and the first excitation mechanism is applied to the component conveying member in the horizontal direction, and the vertical vibration elastic member and the second excitation mechanism In the vibrating component conveying apparatus which gave a vibration of a perpendicular direction to a conveying member,
When the component conveying member is vibrated at the natural frequency in the horizontal direction by the first excitation mechanism, the amplitude of the vibration in the vertical direction is made 6 dB or more smaller than the amplitude of the horizontal vibration occurring in the component conveying member. Vibrating parts conveying device. The component conveying member according to claim 1, wherein the component conveying member is vibrated by the first excitation mechanism, and the frequency of the component conveying member is greater than the amplitude of the horizontal vibration generated when the frequency of the component conveying member is the natural frequency in the horizontal direction of the component conveying member. An oscillating component conveying apparatus characterized in that the amplitude of the vibration in the vertical direction generated when the natural frequency in the vertical direction is made smaller is 3 dB or more. The vibratory component conveying apparatus according to claim 1 or 2, wherein the elastic member for horizontal vibration is fixed at two fixed positions on the same horizontal line perpendicular to the component conveying direction. The vibratory component conveying apparatus according to claim 1 or 2, 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 vibrating component conveying apparatus according to claim 1 or 2, wherein the elastic member for vertical vibration is fixed at two fixed positions on the same horizontal line parallel to the component conveying direction. The said component conveyance member is a bowl in which the said component conveyance path was formed helically, The said elastic member for horizontal vibration is a vibration of a horizontal rotation direction to the said bowl with the said 1st excitation mechanism, An oscillating component conveying apparatus, characterized in that it is an elastic member for rotational vibration to give. The vibratory component conveying apparatus according to claim 6, wherein the elastic member for rotational vibration is fixed at two fixed positions on the same horizontal line orthogonal to the vertical center line of the bowl. The vibratory component conveying apparatus according to claim 6, wherein the elastic member for vertical vibration is fixed at two fixed positions on the same horizontal line extending along an outer circumferential portion of the upper vibrating body or the intermediate vibrating body. 7. The vibratory component conveying apparatus according to claim 6, wherein a leaf spring having a front and back facing in the horizontal rotation direction is used as the elastic member for rotational vibration. 7. The vibratory component conveying apparatus according to claim 6, wherein a leaf spring having a front and back facing in the vertical direction is used as the elastic member for vertical vibration. The reference waveform generating means according to claim 1 or 2, wherein each of said excitation mechanisms comprises an electromagnet and a movable iron core, and generates a reference waveform of an applied voltage to an applied voltage setting circuit to one of the electromagnets. Phase difference adjusting means for providing a waveform amplitude adjusting means for adjusting an amplitude with respect to the reference waveform, and for generating a waveform having a predetermined phase difference with respect to the reference waveform in a voltage setting circuit applied to the other electromagnet; An oscillating component conveying apparatus characterized by providing a waveform amplitude adjusting means for adjusting an amplitude with respect to a waveform generated by the means. The reference waveform generating means according to claim 6, wherein the respective excitation mechanisms comprise an electromagnet and a movable iron core, and the reference waveform generating means generates a reference waveform of an applied voltage in an applied voltage setting circuit to one of the electromagnets. A waveform amplitude adjusting means for adjusting the amplitude with respect to the other, and in the voltage setting circuit applied to the other electromagnet, a phase difference adjusting means for generating a waveform having a predetermined phase difference with respect to the reference waveform, and a waveform generated by the phase difference adjusting means. And a waveform amplitude adjusting means for adjusting the amplitude with respect to the vibration component. 12. The PWM voltage generating means for converting a waveform whose amplitude is adjusted by each of said waveform amplitude adjusting means to a PWM signal is provided in the voltage setting circuit applied to the electromagnet of each said excitation mechanism. Vibrating parts conveying device.

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