JP2000213980A - Device for taking constant number of part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a relatively cheap taking out device of constant number of part provided with an excellent performance. SOLUTION: The device is provided with a pneumatic driving discharge mechanism 10 for discharging a part P from a part container 1, and a control switch 20 for controlling a pneumatic circuit 24 of a driving portion 11 of the discharge mechanism 10 corresponding to the part quantity in a receiving dish 2 accumulating the part P discharged. The discharge mechanism 10 is driven and controlled by the control switch 20 such that a constant number of the parts P is taken out in the receiving dish 2. The pneumatic circuit 24 against the driving portion 11 of the discharge mechanism 10 is turned ON/OFF by operating the control switch 20 in a seesaw shape corresponding to the number of the part P in the receiving dish 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for quantitatively removing small parts such as bolts and nuts in an assembly line for machine products and the like.

[0002]

2. Description of the Related Art Conventionally, when an assembling operation is performed on an assembly line of a passenger car or the like, as shown in FIG. I try to take it out.

[0003]

However, it is difficult to take out a fixed amount of parts from the parts box at a time, and extra parts must be returned to the parts box or the shortage must be taken out again. Since such useless operations and variations in the removal amount occur, a device or method capable of removing components in a fixed amount has been awaited.

[0004] It should be noted that a dedicated device for taking out this kind of component in a fixed amount is expensive if it is known, and such an existing dedicated device is generally of an electric drive type, so that maintenance costs are high. Or, there is a problem that maintenance itself is not easy.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a fixed-quantity component taking-out apparatus having excellent performance and realizable at a relatively low cost.

[0006]

According to a first aspect of the present invention, there is provided an apparatus for removing a fixed amount of components, comprising: a pneumatic drive type discharging mechanism for discharging components from a component container; And a control switch for controlling the pneumatic circuit of the drive unit of the discharge mechanism in accordance with the amount of components in the tray for storing the components. The control switch drives and controls the discharge mechanism so that a fixed amount of components are taken out of the tray. It is configured as follows. According to a second aspect of the present invention, the control switch according to the first aspect operates the pneumatic circuit with respect to a driving unit of the discharge mechanism by operating the control switch in a seesaw manner in accordance with the amount of components in the tray. It is characterized in that it is configured to switch between ON and OFF. According to a third aspect of the present invention, the control switch according to the second aspect has a seesaw balance adjusting means for changing an amount of components to be taken out of the tray. Further, in the component fixed quantity extracting device according to claim 4,
A discharging mechanism according to claim 1 has a component take-out portion that moves up and down in the component container, and discharges components one by one to the outside of the container by the component take-out portion.

[0007] According to the present invention, all the device configurations such as the discharge mechanism and the control switch for controlling the discharge mechanism are of the pneumatic drive type, so that the maintenance is easy and good with a simple configuration. At this time, a certain amount of components can be taken out of the tray, but the amount can be appropriately changed by the seesaw balance adjusting means, and excellent usability is realized.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a fixed-quantity component take-out apparatus according to the present invention will be described below with reference to FIGS. FIG. 1 shows the overall configuration of a fixed-quantity component extracting apparatus according to this embodiment. In this example, nuts as small parts are taken out in a fixed amount, but other small parts such as bolts can of course be applied.

This component unloading device discharges a nut P, which is a small component, from a component container 1 by a pneumatic drive type discharge mechanism 10 and discharges the nut P according to the amount of components in a tray 2 for storing the discharged nut P. A control switch 20 for controlling a pneumatic circuit of a drive unit of the mechanism 10. In FIG. 1, a nut P discharged from a component container 1 is supplied to a tray 2 through a chute 3. Note that a skirt 4 for preventing jumping is provided at the tip of the chute 3.

The discharge mechanism 10 has a pneumatic drive type drive section 11 including an air cylinder and the like. The drive section 11 is controlled by a control switch 20. The driving unit 11 is a component container 1
And a drive rod 12 that moves up and down at the corners of. The lower end of the drive rod 12 is provided with a component take-out portion described later, and the component take-out portion discharges the nuts P one by one to the outside of the container 1.

FIG. 2 shows a configuration example of the control switch 20. The control switch 20 is configured to switch on and off the pneumatic circuit for the drive unit 11 of the discharge mechanism 10 by operating in a seesaw manner according to the amount of components in the tray 2.

That is, the pan 2 fixed to one end of the seesaw rod 21 and the weight 22 attached to the other end are supported by a fulcrum (a support shaft in this example) 23 in a seesaw manner. The discharge mechanism 10 is provided at a predetermined portion of the seesaw rod 21.
A shutter 25 that opens and closes a pneumatic circuit 24 connected to the drive unit 11 is provided. Below the shutter 25, a circuit block 26 arranged in the middle of the pneumatic circuit 24 is provided. The shutter 25 is also provided with a through hole 25a that can be aligned with the pneumatic circuit 24 in the circuit block 26. When the seesaw rod 21 performs the seesaw movement, the pneumatic circuit 24 and the through hole 25a of the shutter 25 coincide with each other, and the pneumatic circuit 24 is connected (ON state in FIG. 3A), or the pneumatic circuit is displaced from each other. 24 is shut off (FIG. 3 (B)
OFF state).

The control switch 20 has a seesaw balance adjusting means for changing the amount of components to be taken out of the tray 2. That is, the weight 22 is the seesaw rod 2
Along the guide groove 21a formed in one longitudinal direction, it is attached so as to be adjustable in position. In this way, by balancing the weight of the nut P in the receiving tray 2 with the desired component removal amount, the number of components to be removed can be appropriately changed.

Here, as shown in FIG.
A component take-out part 13 is provided at the lower end. The component take-out unit 13 moves up and down between the bottom 1 a of the component container 1 and the component input port 3 a of the chute 3. As shown in FIG. 1, the bottom 1 a of the component container 1 is inclined so that the component take-out portion 13 is lower, so that the nut P slides down to the component take-out portion 13. On the upper part of the component take-out portion 13, a projection 14 for preventing the component from being caught is formed in a mountain shape or a tapered shape.
Is provided.

As shown in FIG. 5, a vibration hammer 15 for moving parts is provided inside the apparatus, preferably below the bottom 1a of the parts container 1. This vibration hammer 15
It is fixed to one end of an arm 17 rotatable about a fulcrum 16 and is moved up and down by an air cylinder 18. By suitably tapping the bottom 1a of the component container 1 with the vibration hammer 15, the nut P can be brought to the component extracting portion 13 by the vibration.

In the above configuration, when the drive unit 11 is operated, the component take-out unit 13 is moved up with the nut P placed thereon. Nut P placed on component take-out part 13
Is input from the component input port 3a of the chute 3. The nut P discharged from the component container 1 as described above is supplied to the tray 2 through the chute 3. In this case, if the weight of the weight 22 is heavier than the weight of the nut P in the tray 2, the pneumatic circuit 24 in the circuit block 26 is in the ON state, and the operation of the drive unit 11 continues the discharge operation of the nut P. You.

When the weight of the nut P in the pan 2 is substantially equal to or slightly larger than the weight of the weight 22, the pan 2 is lowered by the seesaw motion of the seesaw rod 21, and the pneumatic circuit 24 in the circuit block 26 is turned off. State. As a result, the operation of the drive unit 11 stops, and the supply of the nut P to the tray 2 also stops. Since the position of the weight 22 is set in advance so that a predetermined number of nuts P are taken out, a predetermined number of nuts P are obtained in the tray 2 when the driving unit 11 stops.

Thereafter, when the nut P is taken out of the tray 2 and emptied, the pneumatic circuit 24 in the circuit block 26 is turned on again, and the operation of discharging the nut P by the operation of the drive unit 11 is repeated as described above. be able to. As described above, the present invention constitutes the pneumatically actuated component fixed-quantity take-out apparatus, and can always perform smooth and accurate operation.

In the above embodiment, an example in which the nut P is taken out in a fixed amount has been described.
The present invention is similarly applicable to a case where other small parts are taken out in a fixed amount, and the same operation and effect as described above can be obtained.

[0020]

As explained above, according to the present invention,
Since such kind of small parts can always be taken out accurately and quantitatively, extra work such as returning or replenishing excess or deficient parts can be eliminated, and the work efficiency is greatly improved. In addition, since the apparatus is of a pneumatic drive type, the maintenance is easy and good with a simple configuration, which is extremely advantageous in terms of handling, cost, and the like.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall configuration of a fixed-quantity component extracting apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration example of a control switch according to the present invention.

FIG. 3 is a front view illustrating the operation of the shutter according to the present invention.

FIG. 4 is a perspective view around a component take-out part according to the present invention.

FIG. 5 is a perspective view around a vibration hammer for moving a component according to the present invention.

FIG. 6 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Component container 2 Receiving tray 3 Chute 4 Skirt 10 Ejection mechanism 11 Drive unit 12 Drive rod 13 Component extraction unit 14 Projection 15 Vibration hammer 17 Arm 18 Air cylinder 20 Control switch 21 Seesaw rod 23 Support point 24 Pneumatic circuit 25 Shutter 26 Circuit block

Claims (4)

[Claims] 1. A pneumatic drive type discharge mechanism for discharging components from a component container, a control switch for controlling a pneumatic circuit of a drive unit of the discharge mechanism in accordance with an amount of components in a tray for storing the discharged components. And a control switch for driving a discharge mechanism so as to take out a fixed amount of components into the tray. 2. The control switch is configured to switch on and off the pneumatic circuit for a drive unit of the discharge mechanism by operating in a seesaw manner according to the amount of components in the pan. The component fixed quantity taking-out device according to claim 1, characterized in that: 3. The apparatus according to claim 2, wherein the control switch has a seesaw balance adjusting means for changing an amount of parts to be taken out of the tray. 4. The device according to claim 1, wherein the discharge mechanism has a component pick-up portion that moves up and down in the component container, and discharges the components one by one to the outside of the container by the component pick-up portion. 3. The fixed-quantity component take-out device according to any one of 3.