JP2009126650A - Vibratory part feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibratory part feeding device capable of smoothly conveying parts without depending on a weight balance in a longitudinal directional of a part conveying means. <P>SOLUTION: A cover 9 covering a vibration generating mechanism 7 on both of a right and a left sides of a chute (a part conveying member) 1 is fixed to an upper vibrator 2, to which the chute 1 is to be fitted, and a balance weight 10 of each cover 9 is fitted freely to be adjusted in position thereof in the longitudinal direction of the chute 1. With this structure, even if the chute 1 is rather short, balance of the center of gravity between a lower vibration system mainly composed of a lower vibrator 5 and an upper vibration system mainly composed of the upper vibrator 2 and the chute 1 can be easily and properly set. Parts can thereby be smoothly conveyed at a constant conveying speed over the whole region of a conveyance path. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vibratory component supply device that aligns components while conveying them linearly and supplies them to the next process.

As shown in FIG. 7, for example, as shown in FIG. 7, a vibration type component supply device that aligns relatively small components while linearly conveying them and supplies them to the next process is a long chute (component conveying member). ) 51, an upper vibrating body 52 to which the chute 51 is attached, a lower vibrating body 55 supported on the floor via a base 53 and a vibration isolating member 54, and a pair of parallel bodies that connect the vibrating bodies 52 and 55 to each other. In many cases, a flat leaf spring 56 and a vibration mechanism 57 that vibrates both vibrating bodies 52 and 55 are provided, and a balance weight 58 is attached to an upstream portion of the lower vibrating body 55. A cover 59 that covers the vibration mechanism 57 on both the left and right sides of the chute 51 is fixed to the lower vibrating body 55 in order to avoid a resonance point change (see, for example, Patent Document 1).
JP-A-8-239113

  The balance weight of the component supply device as described above is for adjusting the balance of the center of gravity of the lower vibration system mainly composed of the lower vibration body and the upper vibration system mainly composed of the upper vibration body and the component conveying member. It was attached to the upstream part of the lower vibrator. This is because a heavier lower vibrating body is easier to balance, and there are many cases in which extension of the component conveying member to the downstream side is often required. Then, by adjusting the mounting position of the balance weight and setting the balance of the center of gravity so that the straight line connecting the center of gravity of the lower vibration system and the center of gravity of the upper vibration system is orthogonal to the leaf spring, The conveyance speed is constant over the entire conveyance path so that the parts can be conveyed smoothly.

  However, as shown in FIG. 7, when the chute 51 is considerably shortened due to installation space restrictions or the like, the center of gravity position G2 of the upper vibration system moves to the upstream side than usual, so the mounting position of the balance weight 58 is Even if the adjustment is made, the straight line G connecting the gravity center position G1 of the lower vibration system and the gravity center position G2 of the upper vibration system cannot be made orthogonal to the leaf spring 56 (parallel to the straight line A perpendicular to the leaf spring 56). In some cases, the parts are likely to stay on the conveyance path due to a difference in conveyance speed between the upstream side and the downstream side.

  In addition, since the large balance weight 58 is attached to the upstream side portion of the lower vibrating body 55, the balance weight 58 may become an obstacle when the apparatus is installed or maintained.

  An object of the present invention is to provide a vibration type component supply device that can smoothly convey a component regardless of the weight balance in the longitudinal direction of the component conveying member.

  In order to solve the above problems, the present invention provides a long component conveying member having a linear conveying path, an upper vibrating body to which the component conveying member is attached, and a lower portion supported on the floor via a vibration isolating member. Vibrating component supply comprising: a vibrating body; a leaf spring that couples the vibrating bodies to each other; a vibrating mechanism that vibrates the vibrating bodies; and a cover that covers the vibrating mechanism on both the left and right sides of the component conveying member. In the apparatus, a configuration is adopted in which the cover is fixed to the upper vibrator and a balance weight is attached to the cover.

  That is, by fixing the cover that covers the vibration mechanism to the upper vibrator and attaching a balance weight to this cover, even if the chute is short, a straight line connecting the center of gravity position of the lower vibration system and the center of gravity of the upper vibration system is formed. The center of gravity balance of the upper and lower vibration systems can be optimally set perpendicular to the leaf spring, and the parts can be conveyed at a constant conveyance speed over the entire conveyance path. Note that the resonance point change caused by attaching the cover to the upper vibrating body can be easily adjusted by a recently developed variable frequency controller, resonance point automatic tracking type controller, or the like.

  Here, if the mounting position of the balance weight can be adjusted in the longitudinal direction of the component conveying member or can be adjusted in the vertical direction, it is easier to adjust the balance between the center of gravity of the lower vibration system and the upper vibration system. To be able to.

  In addition, if the mounting position of the balance weight can be adjusted in the left-right direction of the component conveying member, even if the weight balance of the component conveying member itself is left-right asymmetric, a rotational moment around the vertical axis is prevented. it can. At this time, the balance weight may be attached only to the left and right sides of the component conveying member.

  The weight for adjusting the position of the center of gravity of the lower vibrator can be formed integrally with the lower vibrator. This is because, by attaching the balance weight to the cover fixed to the upper vibrator, it is not always necessary to adjust the position of the weight of the lower vibrator.

  Further, when two leaf springs are provided along the longitudinal direction of the component conveying member, a weight for adjusting the position of the center of gravity of the lower vibrating body is disposed between the two leaf springs. This weight can be prevented from interfering with the installation and maintenance of the apparatus.

  As described above, the vibration type component supply device according to the present invention has the balance weight attached to the cover fixed to the upper vibration body. Therefore, the position of the center of gravity of the upper vibration system is determined according to the length and shape of the component conveying member. By adjusting, the center of gravity balance between the lower vibration system and the upper vibration system is set optimally, and the parts can be transported smoothly.

  In addition, the upper vibration system is usually designed to be lighter than the lower vibration system in order to increase the amplitude of the component conveying member, and in the present invention, a balance weight is attached to the light vibration system. Therefore, a light balance weight can be used, and the entire apparatus can be made smaller and lighter than conventional ones.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 6. 1A and 1B show a first embodiment. This vibration type component supply device has substantially the same configuration as the conventional device shown in FIG. 7, and has a long chute (component conveyance member) 1 having a straight conveyance path 1a and an upper vibration body 2 to which the chute 1 is attached. And a lower vibrating body 5 supported on the floor via the base 3 and the vibration isolating member 4, a pair of leaf springs 6 connecting the vibrating bodies 2 and 5, and the vibrating bodies 2 and 5 are vibrated. And an excitation mechanism 7. The pair of leaf springs 6 are inclined so as to face each other along the longitudinal direction of the chute 1 and to be parallel to each other. Further, a counterweight 8 as a weight for adjusting the position of the center of gravity of the lower vibrating body 5 is fixed to the upstream side portion of the lower vibrating body 5. Then, due to the vibration transmitted from the upper vibrating body 2 to the chute 1, the parts on the chute 1 are aligned while being linearly conveyed in the right direction in FIG.

  Further, a cover 9 covering the vibration mechanism 7 is fixed to the upper vibrating body 2 on both the left and right sides of the chute 1, and a balance weight 10 is attached to each cover 9 so that the position of the balance weight 10 can be adjusted in the longitudinal direction of the chute 1. ing. By adjusting the mounting position of the balance weight 10, the gravity center position G2 of the upper vibration system mainly including the upper vibration body 2 and the chute 1 is adjusted, and the gravity center position of the lower vibration system mainly including the lower vibration body 5 is adjusted. A straight line G connecting G1 and the gravity center position G2 of the upper vibration system can be orthogonal to the leaf spring 6 (parallel to the straight line A orthogonal to the leaf spring 6).

  The balance weight 10 may be directly attached to the upper vibrating body 2 inside the cover 9, but in that case, it is difficult to adjust the position of the balance weight 10 itself. If it is lost, there is a concern about foreign matter entering the vibration mechanism 7. Moreover, if it attaches to the chute 1, it will become an obstacle at the time of chute 1 adjustment. Therefore, it is preferable to attach to the outer side of the cover 9 like embodiment.

  This component supply device has the above-described configuration, and the balance weight 10 is attached to the cover 9 fixed to the upper vibrating body 2 so that the center of gravity balance of the upper and lower vibration systems can be set optimally. Even if it is short, parts can be smoothly conveyed at a constant conveyance speed over the entire conveyance path of the chute 1.

  FIG. 2 shows an example in which the balance weight 10 of FIG. 1 is attached to the cover 9 so that the vertical position can be adjusted. Even in this case, similarly to the example of FIG. 1, the balance of the center of gravity of the lower vibration system and the upper vibration system can be easily adjusted by adjusting the mounting position of the balance weight 10, and the parts can be transported smoothly.

  On the other hand, FIGS. 3A and 3B show an example in which the position of the balance weight 10 of FIG. 1 can be adjusted not only in the longitudinal direction of the chute 1 but also in the horizontal direction. In this way, even if the weight balance of the chute 1 itself is left-right asymmetric, it is possible to stabilize the parts conveyance by preventing a rotational moment around the vertical axis. At this time, the position adjustment of the balance weight 10 in the left-right direction may be possible only on the left and right sides.

  In addition, as described with reference to FIG. 1, since the balance weight 10 is attached to the upper vibrating body 2 side, the counter weight 8 that is the weight on the lower vibrating body 5 side does not need a position adjustment function. As shown, the counterweight 8 can be formed integrally with the lower vibrating body 5 to reduce the cost.

  Further, as shown in FIG. 5, the counterweight 8 is disposed between the upstream leaf spring 6 and the downstream leaf spring 6, and the upstream side of the device is opened, so that the installation work of the device and the upstream side plate are performed. Maintenance work such as adjustment of the spring 6 can be facilitated.

  FIGS. 6A and 6B show a second embodiment. In this embodiment, only the configuration of the component conveying member and the attachment position of the balance weight are different from those of the first embodiment. In other words, this component supply apparatus is a feeder of a type in which two troughs (component transport members) 11 and 12 that transport components in opposite directions to each other on the upper vibrator 2 are arranged, and the components are aligned and supplied to the next process. An alignment supply trough 11 is provided, and a return trough 12 for returning parts removed in the alignment process in the alignment supply trough 11 to the supply end of the alignment supply trough 11 is provided. Then, the balance weight 10 is attached only to the cover 9 on the side where the alignment supply trough 11 is arranged to adjust the weight balance in the left-right direction.

  In such a device in which the component conveying member is asymmetrical in the left-right direction, the weight balance adjustment in the left-right direction is particularly effective. In the example of FIG. 6, since it is known that the return trough 12 side is heavy by design, the left / right adjustment function of the balance weight 10 itself is omitted, and the balance weight 10 corresponding to the weight difference between the troughs 11 and 12 is aligned. It is attached to the supply trough 11 side.

  The balance weight is not limited to a rectangular shape as shown in the drawings of each embodiment, but may be a disk shape or the like, and the attachment position adjusting means is also a long hole in the balance weight as in the embodiment. The method of selecting one of a large number of mounting holes, the method of mounting on the rail, the method of adjusting the screwing amount of the screw mounted on the balance weight, or the like may be employed. The mounting position of the balance weight is preferably outside the cover in terms of ease of position adjustment as described above, but the balance weight is arranged inside the cover and penetrates the long hole of the cover. It is also possible to fix with mounting bolts.

a is a front view of the component supply apparatus of 1st Embodiment, b is a right view of a The front view which shows the modification of the balance weight of FIG. a is a front view showing another modification of the balance weight of FIG. 1, and b is a right side view of a. The front view which shows the example which formed the counterweight of FIG. 1 integrally with the lower vibrating body. The front view which shows the example which changed arrangement | positioning of the counterweight of FIG. a is a front view of the component supply apparatus of 2nd Embodiment, b is a top view of a. Front view of a conventional parts supply device

Explanation of symbols

1 Chute (component conveying member)
2 Upper vibration body 3 Base 4 Vibration isolation member 5 Lower vibration body 6 Leaf spring 7 Excitation mechanism 8 Counterweight 9 Cover 10 Balance weights 11 and 12 Trough (component conveying member)

Claims (7)

  A long component conveying member having a linear conveying path, an upper vibrating body to which the component conveying member is attached, a lower vibrating body supported on the floor via a vibration isolating member, and the two vibrating bodies are coupled to each other. In a vibration-type component supply device that includes a leaf spring, a vibration mechanism that vibrates the two vibration bodies, and a cover that covers the vibration mechanism on both the left and right sides of the component conveying member, the cover is fixed to the upper vibration body. A vibration type component supply device, wherein a balance weight is attached to the cover.   The vibration type component supply apparatus according to claim 1, wherein an attachment position of the balance weight is adjustable in a longitudinal direction of the component conveying member.   The vibration type component supply device according to claim 1, wherein an attachment position of the balance weight is adjustable in a vertical direction.   The vibration type component supply apparatus according to any one of claims 1 to 3, wherein an attachment position of the balance weight is adjustable in a horizontal direction of the component conveying member.   The vibration type component supply apparatus according to claim 1, wherein the balance weight is attached only to one of the left and right sides of the component conveying member.   6. The vibratory component supply device according to claim 1, wherein a weight for adjusting the position of the center of gravity of the lower vibrator is formed integrally with the lower vibrator.   Two leaf springs are provided along the longitudinal direction of the component conveying member, and a weight for adjusting the position of the center of gravity of the lower vibrating body is disposed between the two leaf springs. The vibration type component supply apparatus according to claim 1.

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