JPH0834514A - Part feed control device for vibration type part feeder - Google Patents

Abstract

PURPOSE:To prevent the number of parts from becoming excessive against the air injecting force when conveying the parts fed from a part feeder via air infection. CONSTITUTION:A part detecting sensor 22 is arranged at a place near an air nozzle 12 installed on a feed passage 5, the vibration of a part feeder is stopped by the part detection signal of the part detecting sensor 22, and air is injected from the air nozzle 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parts feeding control device for a vibrating parts feeder, and is used in a field for feeding parts such as a projection nut from the vibrating parts feeder.

[0002]

2. Description of the Related Art It is known to forcibly send out components that have entered a delivery passage of a vibrating parts feeder with jet air. In this case, the parts feeder vibrates continuously.

[0003]

With the above-mentioned configuration, the parts feeder is constantly vibrating, so that the parts are constantly transferred from the bowl of the parts feeder to the delivery passage. There is a problem that an excessive number of parts are aligned, and therefore the jetting force of the air that has started jetting cannot be delivered.

[0004]

Means for Solving the Problem and Its Action The present invention is provided to solve the above-mentioned problems.
An air nozzle that ejects carrier air is installed in the delivery passage of the vibrating parts feeder, and a parts detection sensor is installed in the delivery passage near the air nozzle. It is characterized in that it is connected so as to eject carrier air from the nozzle, and when a part sent to the delivery passage tries to pass a part detection sensor, it is detected there and an electric signal is emitted, thereby The vibrating parts feeder is stopped to stop the part from entering the delivery passage, and at the same time, the carrier air is jetted to the part from the air nozzle, and the part is delivered to the target location.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS. 1 to 8. A vibrating parts feeder 1 has a vibrating part 3 disposed below a circular bowl 2, and a vibrating part feeder 1 is provided. The delivery passage 5 is provided so as to be continuous with the spiral passage 4 formed on the peripheral surface. The spiral passage 4 is installed in the form of a stepped structure, as is apparent from FIGS. 3 and 4, etc., and a delivery passage 5 having a rectangular cross section is continuous at the end thereof. A flexible synthetic resin delivery hose 7 is connected to a tubular member 6 made of stainless steel. The component 8 in this embodiment is a rectangular projection nut as is apparent from the two-dot chain line diagram in FIG. 1 and FIG. 3, and has a projection 9 for welding provided integrally.

The spiral passage 4 is inclined so that its outer peripheral side is lowered, and the engaging groove 10 is provided so as to be continuous with the delivery passage 5. A guide plate 11 is installed continuously at the end of the locking groove 10, and an air nozzle 12 is welded to the side of the guide plate 11. The air nozzle 12 is set so that its air ejection direction is the longitudinal direction of the delivery passage 5, and the air hose 13 is connected to an air switching valve 14 (see FIG. 8). In order to prevent the nut 8 on the spiral passage 4 from inverting, an eaves plate 15 is welded to the bowl 2, which is extended to a position along the pipe member 6 so that the nut 8 inside can be seen. Gap 16
Is installed. The nut 8 that has moved in the correct direction on the helical passage 4 has its projection 9 fitted into the locking groove 10, so that the nut 8 does not fall down in the outer peripheral direction of the helical passage 4 but sequentially vibrates as shown by a two-dot chain line in the drawing. Although the nut 8 is moved, the nut 8 that has been moved while being inverted is engaged with the locking groove 10.
Therefore, it falls from the spiral passage 4 to the outer peripheral side. A receiving box 17 is welded to the outer surface of the bowl 2 to receive it and return it into the bowl 2, and a through hole 18 is opened in the outer plate of the bowl 2.

An inverted L-shaped bracket 19 is welded to the tube member 6 and the outer plate of the bowl 2, supports the delivery hose 7 from below, and is fastened by a hat-shaped fitting 20. Bracket 1
9 is provided with a fixed plate 21 bent downward, to which a component detection sensor 22 is connected by bolts 23, the position of which is brought into close contact with the lower surface of the delivery hose 7 and the air nozzle 12 , So that the air jet from the air nozzle 12 is
, And the nut 8 is delivered vigorously. As the component detection sensor 22, a proximity switch is most suitable here as a representative, but a type such as a contact type limit switch can also be employed.

FIG. 8 schematically shows the connection of the related units, and the electrical relationship between the units and the operation of the present invention will be described accordingly. When the nut 8 is detected by the component detection sensor 22 and an electric signal is generated, the electric signal is transmitted via a connection 24 to the air switching valve 14, whereby the valve 14 is opened and the air of the high pressure air source (not shown) is released. Spouted from the nozzle 12, the delivery passage 5
The inner nut 8 is sent out vigorously by the jet air. At the same time, the signal from the component detection sensor 22 is also transmitted to the vibration unit 26 of the parts feeder 1 via the connection 25, whereby the vibration of the parts feeder 1 is stopped, and the flow of the components into the delivery passage 5 is restricted. It is done. Although FIG. 8 shows only the energizing circuit of the detection signal from the component detection sensor 22, actually a circuit of power current for driving the air switching valve 14 and the vibration generating unit 26 is also installed. However, it is omitted here because it can be easily implemented by a normal circuit.
The bowl 2 is vibrated in a direction in which the vertical direction and the circumferential direction are combined by the vibrating unit 26, which causes the nut 8 to sequentially move on the spiral passage 4 as shown in FIG. If the number of nuts 8 is between the air nozzle 12 and the component detection sensor 22, for example, two or three, it is possible to send out with jet air, but if there are five or six, then the jet output of air Then, since the parts cannot be conveyed completely, the vibration of the parts feeder 1 is stopped by the detection signal from the parts detection sensor 22 and the parts flow into the delivery passage 5 is restricted.

Note that the delivery passage 7 is connected to a destination,
When, for example, 5 to 6 parts are aligned immediately before the target portion, it is desirable that the control circuit be configured to detect the number of aligned components and to prevent the vibrating unit 26 from operating by the electric signal. .

[0010]

According to the present invention, a component detection sensor is installed in the delivery passage near the air nozzle, air is jetted by a component detection signal from the component detection sensor, and vibration of the parts feeder is also stopped. Therefore, it is possible to limit the number of parts located in front of the air nozzle, and therefore, the number of parts that exceeds the air carrying force is not exceeded, and reliable part delivery is always realized. Since the delivery passage is continuously installed at the end of the spiral passage and the air nozzle is attached to the end of the delivery passage, the structure of the delivery portion of the bowl is simplified and the direction of the ejected air is surely secured. Can be set. Further, since the air hose and the component detection sensor are attached by the bracket welded to the outer surface of the pipe member and the bowl, the structural unit is compact.

[Brief description of drawings]

FIG. 1 is an enlarged plan view showing a main part of the present invention.

FIG. 2 is a plan view of a vibrating parts feeder.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG.

FIG. 4 is a sectional view taken along line (4)-(4) of FIG.

5 is a sectional view taken along line (5)-(5) of FIG.

FIG. 6 is a sectional view taken along line (6)-(6) of FIG. 1;

7 is a sectional view taken along line (7)-(7) of FIG.

FIG. 8 is a simplified connection circuit diagram.

[Explanation of symbols]

 1 Vibration type parts feeder 5 Delivery passage 12 Air nozzle 22 Parts detection sensor

Claims (1)

[Claims] 1. A vibrating parts feeder is provided with an air nozzle for ejecting carrier air in a sending passage, a parts detecting sensor is attached to the sending passage near the air nozzle, and the parts feeder vibrates the parts feeder by a parts detecting electric signal. And a part delivery control device for a vibrating part feeder, which is connected so that the carrier air is jetted from an air nozzle.