JP2009035412A - Vibratory parts feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibratory parts feeder capable of stably obtaining a high parts conveying rate at low cost. <P>SOLUTION: A lower vibrating body 3 and an upper vibrating body 4 are connected to each other via a first leaf spring 5, and the upper vibrating body 4 and a trough (a parts conveying member) 7 are connected to each other via a second leaf spring 8 which is inclined in the direction corresponding to the parts conveying direction. Thus, the amplitude of the trough 7 is increased as comparing with the amplitude of the upper vibrating body 4 with a simple constitution to stably obtain a high parts conveying rate. When increasing the amplitude of the trough 7, a gap g between an AC electromagnet 11 of an exciting mechanism 6 and a movable core 12 need not be increased, and the risk of increasing the power consumption or burnout of the electromagnet 11 can be eliminated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vibration type component conveying apparatus that conveys a component by using vibration of an excitation mechanism.

FIG. 4 shows an example of a vibration type component conveying apparatus that conveys components using the vibration of the excitation mechanism. In this component conveying device, a lower vibrating body 53 supported by a base 52 on a floor via a vibration isolating member 51 and an upper vibrating body 54 arranged above the upper vibrating body 54 are connected by a pair of front and rear inclined leaf springs 55. A vibration mechanism 56 for vibrating the vibrating bodies 53 and 54 is provided between the vibrating bodies 53 and 54, and a trough (component transporting member) 57 having a linear transport path above the upper vibrating body 54 is provided. Is attached. The vibration mechanism 56 includes an AC electromagnet 58 attached to the lower vibrator 53 and a movable iron core 59 attached to the upper vibrator 54 so as to face the AC electromagnet 58 with a predetermined gap g. By applying an alternating current to the electromagnet 58, the upper vibrating body 54 and the trough 57 vibrate integrally in the plate thickness direction of the inclined leaf spring 55, and the components on the trough 57 are in a certain direction (arrows in FIG. 4). (For example, refer to Patent Document 1).
JP-A-8-239113

  By the way, in the said component conveying apparatus, both space | interval g is set so that the alternating current electromagnet 58 and the movable iron core 59 may not collide during driving | operation. For example, when the weight on the upper vibrator side and the weight on the lower vibrator side are the same, the interval g between the AC electromagnet 58 and the movable iron core 59 needs to be larger than the amplitude of the trough 57.

  Accordingly, if the amplitude of the trough 57 is increased in order to increase the component conveying speed, the gap g between the AC electromagnet 58 and the movable iron core 59 is increased accordingly. However, if the gap g is increased, the current flowing through the electromagnet 58 increases, resulting in an increase in power consumption and the electromagnet 58 may be burned due to heat generation.

  An object of the present invention is to provide a vibration type component conveying apparatus that can stably obtain a large component conveying speed at low cost.

  In order to solve the above-described problem, the vibration type component conveying device of the present invention includes a lower vibration body supported on a floor via a vibration isolation member and an upper vibration body disposed above the first vibration spring. The vibration mechanism is provided between the two vibrators to vibrate both vibrators, and the upper vibrator and the component carrying member disposed above the upper vibrator are arranged in the parts carrying direction more than the lower end. It was set as the structure connected with the 2nd leaf | plate spring inclined so that it might be located in an upstream.

  That is, the upper and lower vibrating bodies are connected by the first leaf spring, and the upper vibrator and the component conveying member are connected by the second leaf spring inclined in the direction corresponding to the component conveying direction. With the configuration, the amplitude of the component conveying member is amplified with respect to the amplitude of the upper vibration member, so that a large component conveying speed can be stably obtained.

  Further, according to the present invention, the excitation mechanism includes an AC electromagnet attached to the lower vibrator and a movable iron core attached to the upper vibrator so as to face the AC electromagnet at a predetermined interval. Can be applied particularly effectively. That is, it is possible to increase the component conveying speed by increasing the amplitude of the component conveying member without increasing the distance between the AC electromagnet and the movable iron core as in the prior art. In addition, the present invention can also be applied to the case where the excitation mechanism is a piezoelectric vibration mechanism.

  Here, if the inclination angle of the first leaf spring with respect to the vertical direction is smaller than the inclination angle of the second leaf spring with respect to the vertical direction, the operation of connecting the upper and lower vibrating bodies with the first leaf spring is performed. As a result, the assemblability of the component conveying device is improved.

  Further, if the upper vibrating body is provided with a connecting portion extending downward, and the lower end portion of the connecting portion and the component conveying member are connected by the second leaf spring, the size of the entire apparatus is the same as the conventional size. While maintaining the degree, the length of the second leaf spring can be sufficiently increased to significantly increase the component conveying speed.

  When the component conveying member conveys a component along a linear conveying path, the component conveying member and the upper vibrating body are connected to each other on the left and right sides of the conveying path by the second leaf spring. In addition, by connecting the upper vibrating body and the lower vibrating body by the first leaf springs on the left and right sides of the transport path, it is possible to improve the stability of parts transport.

  In the present invention, as described above, the lower vibration body and the upper vibration body of the vibration type component conveying device are connected by the first plate spring, and the upper vibration body and the component conveying member are connected by the inclined second plate spring. Since the amplitude of the component conveying member is amplified with respect to the amplitude of the upper vibrator, the component conveying speed can be stably increased at a low cost, and the component conveying ability can be improved.

  In particular, when the present invention is applied to a conveying device in which the excitation mechanism is configured by an AC electromagnet and a movable iron core arranged at a predetermined interval, the interval between the AC electromagnet and the movable iron core. Since the amplitude of the component conveying member can be increased without widening the gap, it is possible to eliminate the risk of increase in power consumption and burning of the electromagnet accompanying the increase in amplitude as in the prior art.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3. 1A and 1B show a first embodiment. This vibration-type component conveying apparatus includes a lower vibration body 3 supported by a base 2 on a floor via a vibration isolation member 1 and an upper vibration body 4 disposed above the first vibration spring. 5, and a vibrating mechanism 6 is provided between the vibrating bodies 3 and 4 to vibrate both the vibrating bodies 3 and 4, and the upper vibrating body 4 and a trough (component conveying member) 7 disposed above the upper vibrating body 4. Are connected by a second leaf spring 8. The trough 7 is obtained by fixing a trough body 7b having a straight conveyance path 7a to a trough attachment base 7c, and the trough attachment base 7c is connected to the upper vibrating body 4.

  The upper vibrating body 4 is provided with a block-like connecting portion 9 extending downward from the left and right sides of the upper portion. The upper end of each connecting portion 9 is fixed to the upper vibrating body 4 via a fixing plate 10, and the lower fixing portion 8 a of the second leaf spring 8 is fixed to the front and rear protrusions formed at the lower end. Has been. The fixed plate 10 may be integrally formed with the upper vibrating body 4 or each connecting portion 9. In addition, all of the upper vibrating body 4, the fixed plate 10, and each connecting portion 9 may be integrally formed.

  The second leaf springs 8 are arranged on the left and right sides of the conveying path 7a of the trough 7 so that a pair of the second leaf springs 8 is formed in the front and rear. Then, as described above, the lower fixing portion 8a is connected to the connecting portion 9 of the upper vibrating body 4 with the upper end inclined so as to be located upstream of the lower end in the component conveying direction (arrow direction in FIG. 1). The upper fixing portion 8b is fixed to the trough mount 7c. On the other hand, the first leaf spring 5 connects the lower vibrating body 3 and the upper vibrating body 4 while being inclined in the same direction as the second leaf spring 8.

  The vibration mechanism 6 includes an AC electromagnet 11 attached to the lower vibrator 3 and a movable iron core 12 attached to the upper vibrator 4 so as to face the AC electromagnet 11 with a predetermined gap g. It is configured. Then, by applying an alternating current having a frequency f close to the natural frequency fa of the vibration system of the entire conveying device to the alternating current electromagnet 11, the upper vibrating body 4 vibrates efficiently, and the trough connected to the upper vibrating body 4. 7 vibrates substantially in the plate thickness direction of the second leaf spring 8, and the components on the conveying path 7a of the trough 7 are conveyed in the component conveying direction indicated by arrows in FIG.

  At this time, the lower fixing portion 8a of the second leaf spring 8 vibrates integrally with the upper vibrating body 4, and the upper fixing portion 8b vibrates in the spring plate thickness direction with the lower fixing portion 8a as a fulcrum. Therefore, the amplitude of the trough 7 that vibrates integrally with the upper fixing portion 8 b of the second leaf spring 8 is larger than the amplitude of the upper vibrating body 4. The amplification degree can be changed by adjusting the rigidity (width, length, thickness, number, material, etc.) of the second leaf spring 8, adjusting the weight of the trough 7, and the like. Usually, the trough 7 may be adjusted so that the amplitude of the trough 7 is about 1.5 to 3 times the amplitude of the upper vibrating body 4.

  This component conveying device has the above-described configuration, and the amplitude of the trough 7 is amplified with respect to the amplitude of the upper vibrating body 4. Therefore, the component conveying device can be easily adjusted by adjusting the rigidity of the second leaf spring 8. The amplitude of the trough 7 can be increased. In addition, at that time, it is not necessary to increase the gap g between the AC electromagnet 11 of the vibrating mechanism 6 and the movable iron core 12 with the increase in the amplitude of the trough 7 as in the prior art. Therefore, without worrying about an increase in power consumption of the vibration mechanism 6 and burning of the electromagnet 11, it is possible to increase the component conveying speed and improve the component conveying ability.

  Further, since the connecting portions 9 extending downward are provided on both the left and right sides of the upper vibrating body 4, and the lower fixing portion 8 a of the second leaf spring 8 is fixed to the lower end portion of each connecting portion 9. Even if the length of the second leaf spring 8 is sufficiently long so that the parts conveyance speed can be obtained, it is difficult to increase the size of the entire apparatus, and the apparatus size can be suppressed to the same level as that of the conventional apparatus. Furthermore, since the trough 7 is connected to the upper vibrating body 4 by the second leaf spring 8 on both the left and right sides of the conveying path 7a, the components can be stably conveyed even if the component conveying speed is increased.

  In the example shown in FIG. 1, the first leaf spring 5 is inclined in the same direction as the second leaf spring 8, but the inclination angle of the first leaf spring 5 with respect to the vertical direction is not necessarily the second. The leaf spring 8 need not be the same. This is because the components on the trough 7 are thrown upward and conveyed mainly by the inclination of the second leaf spring 8. Accordingly, it is easy to connect the upper and lower vibrating bodies 3 and 4 with the first leaf spring 5 during assembly by making the inclination angle of the first leaf spring 5 smaller than the inclination angle of the second leaf spring 8. can do. At this time, the first leaf spring 5 may be arranged in the vertical direction, or may be inclined in the opposite direction to the second leaf spring 8.

  2A and 2B show the second embodiment. This component conveying device is based on the first embodiment, and the first leaf spring 5 in which the upper and lower vibrating bodies 3, 4 are expanded in the left-right direction and arranged two on each of the left and right sides of the conveying path 7 a of the trough 7. The lower end portion of the connecting portion 13 provided before and after the upper vibrating body 4 and the trough mounting base 7c are connected by a pair of front and rear second leaf springs 8. Even in this case, the components can be stably conveyed as in the first embodiment.

  FIG. 3 shows a third embodiment. This component conveying apparatus employs a vibration mechanism 15 including a piezoelectric vibration mechanism in which piezoelectric elements 14 are attached to the front and back surfaces of the first leaf spring 5 in place of the electromagnetic vibration mechanism 6 of the first embodiment. It is a thing. In the other parts, the point where the first plate spring 5 is connected to the upper vibrating body 4 via the auxiliary plate spring 16, the connecting portion 9 between the second plate spring 8 of the upper vibrating body 4 and the fixed plate The main difference from the first embodiment is that 10 is divided back and forth. Also in this embodiment, the amplitude of the trough 7 can be easily increased by the action of the second leaf spring 8 to obtain a large component conveying speed.

  In addition, about the 2nd leaf | plate spring of each embodiment mentioned above, it can also replace with the elastic support body of other shapes, such as round bar shape and square bar shape.

  Moreover, although each embodiment demonstrated the component conveyance apparatus provided with the trough which conveys components along a linear conveyance path, in component conveyance apparatus provided with the bowl (component conveyance member) which has a helical conveyance path. Of course, the present invention can be applied.

a is a front view of the component conveying apparatus of the first embodiment, and b is a left side view of a. a is a front view of the component conveying apparatus of 2nd Embodiment, b is the left view of a Front view of the component conveying apparatus of the third embodiment Front view of conventional parts conveyor

Explanation of symbols

3 Lower vibration body 4 Upper vibration body 5 First leaf spring 6 Excitation mechanism 7 Trough 8 Second leaf spring 8a Lower fixed portion 8b Upper fixed portion 9 Connection portion 11 AC electromagnet 12 Movable iron core 13 Connection portion 14 Piezoelectric Element 15 Excitation mechanism 16 Auxiliary leaf spring

Claims (7)

  The lower vibrating body supported on the floor via the vibration isolating member and the upper vibrating body disposed above the lower vibrating body are connected by a first leaf spring, and both vibrating bodies are vibrated between the two vibrating bodies. A vibration mechanism is provided, and the upper vibrating body and the component conveying member disposed above the upper vibrating body are connected by a second leaf spring that is inclined so that the upper end is located upstream of the lower end in the component conveying direction. Vibrating parts conveyor.   The excitation mechanism includes an AC electromagnet attached to the lower vibrator and a movable iron core attached to the upper vibrator so as to face the AC electromagnet at a predetermined interval. The vibration type component conveying apparatus according to claim 1.   The vibration component conveying apparatus according to claim 1, wherein the excitation mechanism is a piezoelectric vibration mechanism.   4. The vibratory component conveyance according to claim 1, wherein an inclination angle of the first leaf spring with respect to a vertical direction is smaller than an inclination angle of the second leaf spring with respect to the vertical direction. apparatus.   5. A connecting portion extending downward is provided on the upper vibrating body, and a lower end portion of the connecting portion and the component conveying member are connected by the second leaf spring. Vibration type parts conveying device.   The component conveying member conveys a component along a linear conveying path, and the component conveying member and the upper vibrating body are connected by the second leaf springs on the left and right sides of the conveying path. 6. The vibration type component conveying apparatus according to claim 1, wherein   The component conveying member conveys a component along a linear conveying path, and the upper vibrating body and the lower vibrating body are connected to each other on the left and right sides of the conveying path by the first leaf spring. The vibration type component conveying apparatus according to claim 1, wherein:

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