JPH0238484B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a circulating vibrating component feeder.

A circulating vibrating parts feeder, also commonly referred to as a linear parts feeder, includes a first trough that extends linearly and vibrates to transfer parts in one direction; a second trough that vibrates to transport the parts in the opposite direction;
a parts sorting means provided in the second trough, and the parts not sorted by the parts sorting means are guided again from the terminal end of the second trough to the starting end of the first trough, The fluid is transferred through the first trough and guided from the terminal end of the first trough to the beginning end of the second trough for circulation.

However, in the conventional linear parts feeder, a common drive unit mounting base is disposed below the first trough and the second trough, and the first trough and the second trough are connected to each other via leaf springs. is combined with On the drive unit mounting base, there is a single electromagnet or one electromagnet each equipped with a coil for driving the first trough and the second trough on both sides.
Two electromagnets each having a number of coils are fixed, and the drive unit mounting base is further supported on a base via vibration-damping elastic means or supported on a linear base.

In the conventional configuration as described above, even if an attempt is made to adjust the amplitude of one trough by controlling the energization amount of one coil independently of the energization amount of the other coil, this adjustment will cause the amplitude of the other trough to change. did. Therefore, it has been very difficult to adjust the amplitudes of both troughs to a desired value, that is, to adjust the flow of parts within both troughs to a favorable state.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a circulating vibrating component feeder that can easily adjust the amplitude of both troughs to a desired value. According to the invention, this object extends linearly;
a first trough that vibrates to transfer parts in one direction; a second trough that extends linearly in proximity to the first trough and vibrates to transfer parts in a direction opposite to the one direction; and a parts sorting means provided in the second trough, and the parts that have not been sorted by the parts sorting means are guided again from the terminal end of the second trough to the starting end of the first trough. 1
In the circulating vibrating parts feeder, the vibrating parts feeder is configured to transport the inside of the trough and guide it from the terminal end of the first trough to the starting end of the second trough for circulation. A first counterweight each having a first vibration driving section whose driving force can be controlled; and a second counterweight comprising a second vibration driving section whose driving force is controlled independently of the first vibration driving section. the first counter weight and the second counter weight are coupled to the first trough and the second trough via first and second resonant leaf springs, respectively; 1 counter weight and the second counter weight are respectively coupled to a fixed base via first and second vibration isolating leaf springs, and the first counter weight of the first and second vibration isolating leaf springs is connected to the fixed base through first and second vibration isolating leaf springs. The fixing points of the weight and the second counter weight are respectively above the center of gravity of the entire movable mass of the first counter weight including the first vibration drive unit and the first counter weight, and the second counter weight. This is achieved by a circulating vibrating parts feeder, which is located above the center of gravity of the entire movable mass on the second counter weight side, including the vibration drive unit and the second counter weight.

Hereinafter, details of the present invention will be explained based on illustrated embodiments.

FIG. 1 is a plan view of a circulating vibrating parts feeder (hereinafter referred to as a linear parts feeder) of this embodiment. It extends outward, and has side walls 3 and 4 on the outside, but the adjacent sides,
That is, it has no inner side wall. 2nd trough 2
A supply trough 6 is integrally formed in the side wall portions 6a and 6b, and a groove 5 having a width slightly larger than the width of the parts to be aligned and supplied (in a rectangular shape, although not shown) is provided between both side wall portions 6a and 6b.

Both end portions 3a and 3b of the side wall portion 3 of the first trough 1 are formed in an arc shape, and the transfer surface 7 thereof is inclined upward with respect to the transfer direction of the parts, and an arc-shaped terminal end portion 3b is formed.
The parts are guided to the second trough 2 by the guide. The starting end 4a side of the side wall 4 of the second trough 2 is formed in an arc shape, but the terminal end 4b side is bent, thereby guiding the supply trough 6 into the groove 5 and misaligned parts removal slope 9 We are providing guidance to The transfer surface 8 of the second trough 2 also has an upward slope with respect to the component transfer direction, and both troughs 1 and 2
The transfer surfaces 7, 8 are outwardly and slightly downwardly inclined as shown in FIG. The misaligned parts removal slope 9 is sloped downward toward the first trough 1, and the parts that reach this side in a horizontal direction are removed toward the starting end of the first trough 1 by this slope. The groove 5 of the supply trough 6 is also slightly inclined outwards, similar to the transfer surface 8 of the second trough 2;
Parts whose longitudinal direction lies along the transport direction are easily guided from the transport surface 8 into the groove 5.

A first counterweight 10 is arranged below the first trough 1, and an electromagnet 11 is fixed to this and a coil 12 is wound around it. A movable core 13 is fixed to the bottom surface of the first trough 1 so as to face the pole face of the electromagnet 11. The first counter weight 10 and the first trough 1 are coupled by a pair of front and rear resonant leaf springs 14a and 14b. That is, both lower ends 15 of the first counter weight 10
Resonant leaf spring 1 is mounted on the inclined surface formed in a and 15b.
The lower ends of 4a and 14b are fixed with bolts,
The upper end portion is fixed to an inclined surface and a notch formed in both end portions 16a and 16b of the first trough 1 with bolts.

Below the first counter weight 10 is a first counter weight 10.
A base block 18 is provided, and this is coupled to the first counterweight 10 by a pair of front and rear vibration isolating leaf springs 20a, 20b. That is, the vibration isolating leaf springs 20a and 20b are inserted into through holes 17a and 17b formed near both lower ends 15a and 15b of the first counterweight 10, and their lower ends are connected to the first counterweight 10. base block 18
is fixed by bolts to inclined surfaces 18a and 18b formed at both ends of the first counter.
The weight 10 is fixed to inclined surfaces formed at both upper ends 19a and 19b with bolts.

Below the second trough 2, the shape is the same as that of the first counter weight 10, but in the same horizontal plane.
A second counterweight 21 is disposed at a position rotated by 180 degrees, and an electromagnet 22 is connected to the electromagnet 1 fixed to the first counterweight 10.
Although it is lined up with 1, it is fixed facing in the opposite direction and has a coil 23 wound thereon. A movable core 24 is fixed to the bottom surface of the second trough 2 so as to face the pole face of the electromagnet 22. 2nd counter weight 2
1 and the second trough 2 are a pair of front and rear resonant leaf springs 2.
5a and 25b. That is, the second
Both lower ends 26a of the counter weight 21,
Resonant leaf spring 25 is attached to the inclined surface formed in 26b.
The lower ends of the second troughs 27a and 25b are fixed with bolts, and the upper ends of the second trough 2 are fixed with bolts on the inclined surfaces formed at both ends 27a and 27b.

A second counter weight 21 is located below the second counter weight 21.
A base block 29 is provided, and this is coupled to the second counter weight 21 by a pair of front and rear vibration isolating leaf springs 31a, 31b. That is, the vibration isolating leaf springs 31a and 31b are inserted into through holes 28a and 28b formed near both lower ends 26a and 26b of the second counterweight 21, and their lower ends are connected to the second counterweight 21. base block 29
It is fixed by bolts to inclined surfaces 29a and 29b formed at both ends of the second counter
The weight 21 is fixed to inclined surfaces formed at both upper ends 30a and 30b with bolts.

The first and second base blocks 18 and 29 have the same shape but are disposed facing in opposite directions and are fixed to the mounting plate 41 with bolts (not shown) and are integrated. The mounting plate 41 is fixed to the base with bolts at both ends. That is, the first and second base blocks 18, 29 and the mounting plate 41 constitute a fixed base of the linear parts feeder of this embodiment.

Grooves 31 and 34 for guiding the terminal lead wires of the coils 12 and 23 are formed on opposing sides of the first and second counter weights 10 and 21, and are vertically aligned with these grooves 31 and 34. Grooves 32 and 35 are formed on opposing sides of the first and second base blocks 18 and 29. First,
The second base blocks 18, 29 are further formed with lateral grooves 33, 36 which pass through from left to right in FIG. 2, and these grooves communicate with the above-mentioned grooves 32, 35, respectively. Terminal lead wire 3 of coils 12 and 23
7 and 38 pass through the yoke side surfaces of the electromagnets 11 and 22, are guided into grooves 31, 34 and 32, 35, are covered with cab tires 39, 40, and are inserted into the through hole 3.
3 and 36 to the outside. In the illustrated example, it is led out to the rear of the first and second base blocks 18 and 29, but it may be led out to the front depending on the position of the controller of this linear parts feeder.

In the above configuration, the first counter
Weight 10, electromagnet 11 fixed to it
etc., vibrate integrally and constitute a movable mass on the first counter weight side.Similarly, the second counter weight 21, the electromagnet 22 fixed thereto, etc. vibrate integrally and are movable on the second counter weight side. Although it constitutes the mass, the vibration isolating plate springs 20a, 2
The fixing points of 0b, 31a, and 31b to the first counterweight 10 and the second counterweight 21 are the center of gravity of the movable mass on the first counterweight side and the center of gravity of the entire movable mass on the second counterweight side, respectively. It is set to be higher up. In this embodiment, the first trough 1 and the second trough 2 are made of aluminum, and the entire movable mass on the first and second counter weight sides is almost made of iron, so the first trough 1 or the second trough 2 The center of gravity of the entire movable mass on the first trough side or the second trough side, including the first trough side or the second trough side, is close to the center of gravity position of the entire movable mass on the first or second counter weight side, and is located only slightly above. However, although the first trough 1 and the second trough 2 are made of iron, if the total mass of the parts to be accommodated is large, the overall center of gravity will be high, so in some cases, the anti-vibration plate spring 20a may be used. , 20b and 31a, 31b
The fixing point to the first and second counter weights 10 and 21 may be set higher than the entire center of gravity including the first and second troughs 1 and 2. In short, in this embodiment, the fixed point is set at a position higher than the center of gravity of at least the first and second counter-side movable total masses.

Although the embodiment of the present invention is configured as described above,
Next, this effect will be explained.

When alternating current is applied to the coils 12 and 23, an alternating attractive force is generated between the electromagnets 11 and 22 and the movable cores 13 and 24, respectively, and the first trough 1 and the second trough 2 are indicated by the arrow a and the dotted line in FIG. It vibrates in the direction shown by arrow b. As a result, although not shown, the parts in the first trough 1 and the second trough 2 are transferred in the directions indicated by arrows a' and b' in FIG. That is,
The parts in the first trough 1 rise on the transfer surface 7 and, upon reaching the terminal end 3b, are transferred along this guide surface to the starting end 4a of the second trough 2, and then on the transfer surface 8 of the second trough 2. goes up in the direction indicated by the arrow. When reaching the terminal end 4b, the parts whose longitudinal direction is oriented in the transport direction are guided directly into the groove 5 of the supply trough 6, while the parts oriented in the transverse direction slide down the slope 9 and into the first trough 1. is guided to the starting end 3a. Thereafter, parts that are not sorted are circulated through the first trough 1 and the second trough 2 in the same manner. The sorted parts are supplied to the next process from the discharge end of the groove 5 of the supply trough 6.

The first trough 1 and the second trough 2 vibrate in opposite phases, and the reaction force due to these vibrations is applied to the resonance plate spring 14.
a, 14b and 25a, 25b to the first counterweight 10 and second counterweight 21, respectively. This causes the first and second counter weights 10 and 21 to vibrate in the same direction as the first and second troughs 1 and 2, but with a much smaller amplitude. That is, the first and second troughs 1 and 2 are connected to the resonance leaf spring 14 so that they vibrate in resonance.
This is because the spring constants of the vibration-proof leaf springs 20a, 20b and 31a, 31b are determined in consideration of the vibration-proofing effect, although the spring constants of the springs a, 14b and 25a, 25b are determined. Since the first counter weight 10 and the second counter weight 21 vibrate in opposite phases, the base blocks 18, 2
Since the horizontal components of the reaction forces transmitted to base blocks 9 cancel each other out, only a small difference in force is transmitted to base blocks 18 and 29. Also, the vertical components are phase-added, but since the amplitudes of the first and second counter weights 10 and 21 are much smaller than those of the first and second troughs 1 and 2, the base blocks 18 and
The vertical component of the reaction force transmitted to 29 is also very small.

As mentioned above, the first trough 1 and the second trough 2 are almost completely independent, unlike in the past.
In other words, since they vibrate without being affected by the vibrations of the other, the amplitudes of both troughs 1 and 2 can be adjusted by independently controlling the amount of current flowing through the coils 12 and 23 when using this linear parts feeder. This is extremely easy to do.

In addition, vibration-proof leaf springs 20a, 20b and 31a,
31b first and second counter weights 10,
21 is located above the center of gravity of the total movable mass on the first and second counter weight sides, including the weights 10, 21 and electromagnets 11, 22, etc. Troughs 1, 2, counter weights 10, 21 as shown
Although the width of the first trough 1 and the second trough 2 are very small compared to the height and length, the first trough 1 and the second trough 2 vibrate stably and uniformly. For example, in a conventional linear parts feeder, the vibration angle is almost horizontal at the tip of the supply trough 6, which deteriorates the transport condition of parts, but this does not occur in this embodiment. Further, since the resonant leaf spring is disposed outside the vibration-isolating leaf spring, the number of stacked leaf springs and the tightening force of the bolt can be easily adjusted to adjust the resonance point. Although the embodiments of the present invention have been described above, the present invention is of course not limited thereto, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiments, the inclined surface 9 was used as the simplest means for sorting parts, but the present invention is not limited to this, and various known means can be applied.

Further, although a leaf spring is used as the resonance elastic means and the vibration-proofing elastic means, other elastic means such as a rubber spring may be used.

As described above, according to the circulating vibrating parts feeder of the present invention, the swing width of the first trough and the second trough can be completely adjusted by adjusting the driving forces of the first vibration drive section and the second vibration drive section. The desired adjustment for each trough is extremely easy since it can be adjusted independently, ie without any influence on the other.

This allows the first trough and the second trough to optimally obtain the sorting action of the parts sorting means in the second trough.
The width of the trough can be adjusted, and therefore the feeding capacity of this feeding machine can be further improved compared to the conventional one.

Further, stable and uniform vibration can be performed over the entire length of the first and second troughs, and a good transfer state of the parts can be obtained.

[Brief explanation of drawings]

FIG. 1 is a plan view of a linear parts feeder according to an embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a view seen from the - line direction in FIG.
The figure is a sectional view in the - line direction in FIG. 2. In the figure, 1...first trough, 2...second trough, 9...unaligned parts removal slope, 10,
21...First and second counter weights, 1
1, 22... Electromagnet, 12, 23... Coil, 1
4a, 14b, 25a, 25b... Resonance leaf spring, 18, 29... First, second base block,
20a, 20b, 31a, 31b... Anti-vibration leaf spring, 41... Mounting plate.

Claims (1)

[Claims] 1. A first trough that extends linearly and vibrates to transfer parts in one direction; and a first trough that extends linearly in proximity to the first trough and vibrates to transfer parts in a direction opposite to the one direction. 2 troughs and a parts sorting means provided in the second trough, and the parts that are not sorted by the parts sorting means are transferred again from the terminal end of the second trough to the starting end of the first trough. and transport the first trough through the first trough.
In the circulating vibrating parts feeder, which is guided from the terminal end of the trough to the starting end of the second trough for circulation, a first trough whose driving force is controllable is provided below the first trough and the second trough. a first counter weight having a vibration drive unit;
a second counterweight having a second vibration drive unit whose driving force is controlled independently of the vibration drive unit; The first trough and the second trough are coupled via a second resonant leaf spring, and the first counterweight and the second counterweight are coupled to the first and second vibration-isolating leaf springs, respectively. and the fixing points of the first and second vibration isolating leaf springs to the first counter weight and the second counter weight are respectively connected to the first vibration drive unit and the first vibration damping plate spring. above the center of gravity of the total movable mass on the first counterweight side including the counterweight, and the center of gravity of the total movable mass on the second counterweight side including the second vibration drive unit and the second counterweight. A circulating vibrating parts feeder characterized by being located above the position.