JPH06171735A - Parts arranging device - Google Patents

Abstract

PURPOSE:To improve the arrangement rate and permit the coping with a variety of small article parts by adjusting the amplitude and frequency of the horizontal vibration applied to a pallet body. CONSTITUTION:As for a device which is constituted so that a pallet body 21 having part arrangement holes 20 opened on the upper surface is horizontally vibrated by a horizontal vibrating board 17, and the small article parts on the pallet 21 are dropped into the part arrangement holes 20 and arranged, the means 15, 17a, and 28 for adjusting the amplitude and frequency of the horizontal vibration of the pallet body 21 are provided. The amplitude and frequency of the horizontal vibration applied to the pallet 21 are adjusted to the combination corresponding to the difference of dimession and shape of the small article parts as arrangement objective articles, and the small article parts can be sufficiently arranged independently of the difference of kinds of the small article parts by allowing the reciprocating shift stroke and reciprocating shift frequency corresponding to the kind of the small article part to be satisfied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention applies horizontal vibration to small parts, such as small screws and contact pins, which have a foot portion following a large diameter portion, or flat washers which do not have a foot portion. The present invention relates to a component aligning device for aligning.

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional device of this type has a rocking base 34 which is rocked up and down about a horizontal shaft 31 by expansion and contraction of a vibration cylinder 33.
The pallet receiver 37 is slidably supported by guide rails 36a and 36b parallel to the horizontal shaft 31 on the top of the pallet holder 37.
8 are accommodated and held.

A motor 39 as a horizontal vibration drive source is fixedly mounted on the rocking base 34, and an eccentric shaft 40b provided as shown in FIG.
The guide rails 36a and 36b provided on the guide rail 3 are inserted into the long holes 41 in a direction perpendicular to the guide rails 36a and 36b, and the eccentric shaft 40b revolves when the motor 40 rotates.
The pallet receiver 37 is converted via the 6a and 36b into an oscillating reciprocating movement in the direction of the arrow a along the guide rails 36a and 36b.

When the pallet 38 swings up and down together with the swing base 34 via the pallet receiver 37,
The above randomly placed small parts are dispersed over the upper surface of the pallet 38.

When the pallet 38 is vibrated together with the pallet receiver 37 in the direction of the arrow a, the small parts dispersed on the pallet 38 are reciprocated in the direction of the arrow a, so that the small parts are aligned with the parts aligning holes. The legs and the whole of the small parts that are about to pass through are repeatedly received through the parts alignment holes 30 and aligned.

[0006]

However, in the above-mentioned conventional structure, the amplitude of the vibration applied to the pallet 38 by the eccentric shaft 40b on the motor shaft 40a is constant, and the movement of the pallet at the time of alignment is unified. I will end up. Therefore, there is a problem that the insertion rate of the alignment target component into the component alignment hole 30 may vary depending on the shape, size, etc. of the alignment target component, or the applicable alignment target component may be limited.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a parts aligning device having a high alignment rate and capable of handling various precision small parts.

[0008]

In order to achieve the above object, a parts aligning apparatus of the present invention is designed so that a pallet body having a part arranging hole opened on the upper surface is horizontally vibrated by a horizontal vibrating drive source to move the pallet on the pallet. In the component aligning device for dropping the small components into the component aligning holes and aligning them, it has means for adjusting the amplitude and frequency of the horizontal vibration applied to the pallet body by the horizontal vibration drive source. It is what

[0009]

In the above structure of the present invention, by adjusting the amplitude and frequency of the horizontal vibration applied to the pallet body by the horizontal vibration drive source by the respective adjusting means,
By obtaining the combination of amplitude and frequency according to the shape and size of the small parts to be aligned, the reciprocating stroke corresponding to the size of the small parts and the difficulty of inserting the small parts into the parts alignment holes are proportional. Since the number of reciprocating movements is satisfied, the small parts can be sufficiently aligned regardless of the kind of the small parts.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A parts aligning apparatus as an embodiment of the present invention will be described below with reference to FIGS.

In the apparatus of this embodiment, as shown in FIG. 1 as a whole, one end of a rocking base 17 is supported by a shaft 10 by means of poles 12a and 12b which are erected on both sides of one end of a base 11. The rocking base 17 is pivotally supported, and the rocking base 17 is rocked up and down about the shaft 10 by the expansion and contraction of the cylinder 13 which is caused to work between the base base 11 and the rocking base 17. Stoppers 14 are erected on both sides of the other end of the base 11, so that the free end of the rocking base 17 is received from below by a claw 14a. By adjusting the height of the stopper 14 or the claw 14a, the downward movement position of the free end of the rocking base 17 can be adjusted to adjust the vertical rocking angle of the rocking base 17. A pallet receiver 19 is held on the rocking base 17 via two linear guides 18a and 18b parallel to the shaft 10 so as to be slidable in the X direction. 21 is accommodated and held.

As shown in FIG. 2, a motor 15 as a horizontal vibration drive source is mounted on the lower surface of the rocking base 17 so that the position of the motor 15 can be adjusted in the Y direction perpendicular to the X direction. An eccentric shaft 22 a provided on the pallet is connected to the pallet receiver 19 via a vibration transmission lever 23.

The vibration transmitting lever 23 is pivotally supported on the rocking base 17 by a shaft 24 at one point near the tip thereof, and the long hole 2 is provided in the longitudinal direction from the shaft 24 of the vibration transmitting lever 23 to the tail end side.
3a and the eccentric shaft 22a are fitted together, and the vibration transmitting shaft 25 erected at the tip of the vibration transmitting lever 23 is fitted into the passive hole 26 provided at the bottom of the pallet receiver 19.

As a result, when the motor 15 rotates, the eccentric shaft 22a revolves, and the vibration transmission lever 2 passes through the elongated hole 23a.
3 is oscillated back and forth. This vibration transmission lever 23
The oscillating reciprocating rocking of the pallet is transmitted to the pallet receiver 19 via the vibration transmission shaft 25 and the passive hole 26, so that the pallet receiver 19 vibrates in the X direction in the same manner as the pallet 21 accommodated and held therein. It reciprocates and vibrates horizontally.

On the pallet 21, precision small parts such as machine screws, which are parts to be aligned, are randomly placed. These small parts are used for the pallet 2 via the pallet receiver 19 when the cylinder 13 expands and contracts and the rocking base 17 rocks up and down.
By the vertical swing of 1, the pallets 21 are dispersed and smoothed over the entire upper surface. In order to perform this operation at a predetermined cycle, a timer 27 is connected to the cylinder 13 so that the rocking cycle can be freely set and controlled.

Further, as the pallet 21 is vibrated in the X direction as described above, the small parts dispersed on the pallet 21 are reciprocally moved in the X direction at each place, and the part aligning hole 20 portion of the pallet 21 is moved. It is aligned by being repeatedly passed through and received by it.

The parts aligning holes 20 are provided in various ways according to the shape and size of small parts. Depending on the type of small parts, it may be preferable to set a large reciprocating stroke in the X direction in order to efficiently receive and align them in the part aligning holes, or a small reciprocating stroke may be necessary, and a large reciprocating stroke may cause time loss. I have said that it is not preferable.
In addition, since it is difficult to receive the special type in the component alignment hole, there is a case where it is desired to increase the number of times the small component passes over the component alignment hole per unit time to increase the alignment rate per unit time.

Therefore, it is preferable that the amplitude and frequency of vibration of the pallet 21 can be freely set according to the type of small parts.

This is possible in this embodiment. The amplitude of the vibration of the pallet 21 is the distance L from the shaft 24, which is the swing center of the vibration transmission lever 23, to the engagement position with the eccentric shaft 22a.
1 and the distance L2 from the shaft 24 to the vibration transmission shaft 25, and the distance L1 is determined by the rocking base 17 of the motor 15.
Since it can be adjusted by adjusting the position in the Y direction through a play hole 17a provided at the bottom of the pallet, the vibration amplitude of the pallet 21 can be freely changed, and the small parts on the pallet 21 are reciprocated by the vibration in accordance with the change of the amplitude. The movement stroke can be changed.

The frequency of vibration of the pallet 21 is the number of revolutions of the eccentric shaft 22a per unit time, that is, the motor 15
The frequency of the vibration of the pallet 21 can be freely changed and the number of reciprocations per unit time of small parts on the pallet 21 can be changed because the rotation speed of the motor 15 can be adjusted by the inverter control circuit 28. You can

By adjusting the amplitude and the frequency of the horizontal vibration applied to the pallet 21 by the adjusting means, the combination of the amplitude and the frequency according to the difference in the shape and size of the small parts to be aligned can be obtained. And the number of reciprocating movements that is proportional to the size of the small parts and the number of reciprocating movements that are proportional to the difficulty of inserting the small parts into the part alignment holes are satisfied. They can be aligned, the alignment rate is improved, and various small parts can be dealt with.

The vibration source for vibrating the pallet 21 horizontally, the transmission system to the pallet 21, and the specific structure of the means for adjusting the amplitude and frequency of this vibration are not limited to the above-mentioned embodiments, but are already known. Various methods can be adopted.

[0023]

According to the present invention, the amplitude and frequency of the horizontal vibration applied to the pallet body are adjusted to a combination according to the difference in the shape and size of the small parts to be aligned, so that the kind of small parts can be adjusted. Since the reciprocating stroke and the number of times of reciprocating movement are satisfied, the small parts can be sufficiently aligned regardless of the type, so that the alignment rate is improved and various small parts can be dealt with.

[Brief description of drawings]

FIG. 1 is a perspective view showing a parts aligning device as an embodiment of the present invention.

2A and 2B are a plan view and a cross-sectional view showing a main part of the component alignment device of FIG.

FIG. 3 is a perspective view showing a conventional component aligning device.

FIG. 4 is a plan view and a cross-sectional view of a part of the component alignment device of FIG.

[Explanation of symbols]

 15 motor 17 rocking table 17a play holes 18a, 18b linear guide 19 pallet receiver 20 parts alignment hole 21 pallet 22 motor shaft 22a eccentric shaft 23 vibration transmission lever 23a long hole 24 shaft 25 vibration transmission pin 26 passive hole 28 inverter control circuit

Claims (1)

[Claims] 1. A component arranging device for horizontally oscillating a pallet body having a component arranging hole opened on the upper surface by a horizontal vibration drive source to drop small components on the pallet into the component arranging hole and align them. A parts aligning device comprising means for adjusting an amplitude of horizontal vibration applied to a pallet body by a drive source and means for adjusting a frequency.