WO2015097816A1

WO2015097816A1 - Component supply device

Info

Publication number: WO2015097816A1
Application number: PCT/JP2013/084900
Authority: WO
Inventors: 佳成深田; 圭久松
Original assignee: 株式会社コガネイ; 株式会社アートテック
Priority date: 2013-12-26
Filing date: 2013-12-26
Publication date: 2015-07-02
Also published as: JPWO2015098323A1; JP6373871B2; WO2015098323A1

Abstract

In this component supply device, which uses a vibrating part feeder, the component conveyance efficiency is increased by causing the effects of static electricity to not be incurred. In the component supply device, which uses a vibrating part feeder, at least the portions of the vibrating part feeder at which static electricity arises alongside the conveyance of components are caused to be non-conductive.

Description

Parts supply device

The present invention relates to a component supply apparatus using a vibration type part feeder.

Conventional technology

There are parts supply devices that transport minute electronic parts such as chip resistors and chip capacitors by using vibratory parts feeders such as vibratory bowl feeders and vibratory linear feeders. When a component made of a material that is easily charged with static electricity is transported by this component feeder, static electricity is generated due to friction between the component and the transport path.

When a large amount of static electricity is generated between the conveyance surface of the conveyance path and the surface of the part that comes into contact with the conveyance surface, the lightweight parts or the parts and the bowl are attracted or repelled during conveyance, and the parts are aligned. It interferes with transportation. In addition, when a component is supplied to the next process while being charged with static electricity, dust in the air may adhere to the component and cause a defect in an electrical product or the like in which the component is incorporated. As a countermeasure against static electricity in such a component supply device, in order to neutralize the charge charged to the component or the like due to static electricity, air containing ionization ions is blown from above the component supply device in the direction in which the component is conveyed. It has been proposed.

Also, a technique has been proposed in which the bowl of the vibratory bowl feeder is made of metal and grounded to release static electricity charged in the bowl (for example, see Patent Document 1).

JP 2001-39530 A

However, when static electricity is generated between the bowl and the component, charges of opposite polarity are charged on the contact surfaces of the bowl B and the component W as shown in FIG. When charges of opposite polarity are opposed at a short distance such as between the bowl B and the part W, positive and negative charges are attracted and the bowl B and the part W are attracted and attracted. When the bowl B and the part W are attracted and attracted in this way, the ionized air ia for static elimination from the outside does not reach between the bowl B and the part W, and the charges charged in the bowl B and the part W cannot be eliminated. There is.

Even when the bowl B and the component W are attracted and attracted in this way, the component moves due to, for example, a collision between the components. However, since the bowl is made of metal and is a conductor, the charge moves, so FIG. As shown in b), the electric charge charged in the bowl B is also pulled and moved by the electric charge charged in the component W. That is, since the state in which the bowl B and the component W are attracted to each other is maintained, the charges charged in the bowl B and the component W cannot be removed even if the component W moves. Thus, in the vibration type parts feeder, static electricity generated between the parts and the bowl may not be effectively removed.

The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to effectively remove static electricity generated in a component during transportation in a component supply apparatus using a vibration type part feeder. It is.

In order to achieve the above object, the present invention provides a component supply apparatus that uses a vibration type parts feeder that includes a component storage portion that conveys the components to be accommodated by vibration, and a vibrator that vibrates the component storage portion. The vibration type parts feeder is characterized in that at least a portion where static electricity is generated when parts are conveyed is a non-conductive material.

It is desirable that the non-conductor is made of resin. In the case where the vibratory parts feeder is a vibratory bowl feeder, if the entire bowl serving as the component housing portion is made of resin, the bowl can be easily manufactured and the manufacturing cost can be reduced. Even when the vibratory parts feeder is a vibratory linear feeder, if all of the vibratory linear feeders are made of resin, there is an advantage that manufacture is easy. However, in the case of both the vibratory bowl feeder and the vibratory linear feeder, for example, the resinized slag (made of resin) is at least the movement or conveyance of parts, such as only the conveyance path, or the part loading / dropping part. It may be a part where static electricity is generated.

Furthermore, it is desirable to provide a static elimination device that sprays static elimination ions toward the part through which the parts pass in the vibration type part feeder. In this case, it is desirable to discriminate the potential of the charged component with a potential sensor and to blow ionized air having a polarity opposite to that potential onto the component.

Furthermore, it is desirable to provide a controller that can be switched between an operation mode of normal vibration strength and a static elimination mode that vibrates more strongly.

According to the present invention, it is possible to effectively remove static electricity generated in a component during conveyance in a component supply apparatus using a vibration type part feeder.

It is a perspective view of the components supply apparatus which concerns on embodiment of this invention. It is a top view of the component supply apparatus of FIG. It is a front view of the component supply apparatus of FIG. It is a right view of the component supply apparatus of FIG. It is a figure which shows the state of the electric charge between the resin-made bowls and components which concern on this invention. It is a figure which shows the other example of the vibration type bowl feeder of FIG. It is a figure which shows the further another example of the vibration type bowl feeder of FIG. FIG. 3 is a cross-sectional end view taken along the line XX of the straight conveyance path of FIG. It is a figure which shows the example of the controller of the components supply apparatus which concerns on embodiment of this invention. It is a top view of other examples of a vibration type straight advance feeder. It is a figure which shows the state of the electric charge between metal bowls and components.

BEST MODE FOR CARRYING OUT THE INVENTION

Next, embodiments of the present invention will be described with reference to the drawings.

1 to 4 are diagrams showing a configuration example of a component supply device PF according to an embodiment of the present invention. The component supply device PF includes a vibrating bowl feeder 10 and a vibrating linear feeder 20. The vibratory bowl feeder 10 includes a bowl 11 and a vibrator 12. The bowl 11 is given a torsional vibration from the vibrator 12. The bowl 11 has a circular convex bottom surface 14 at the center and a spiral conveyance path 15 that rises with a step from a part of the periphery of the bottom surface 14 to the outer periphery of the bowl 11. The vibrator 12 generates vibration using, for example, an electromagnetic vibrator as a drive source. When the vibration of the vibrator 12 is transmitted to the bowl 11, parts (not shown) thrown into the bowl 11 move along the conveyance path 15, and an arc-shaped crossing conveyance path from the end 15 a of the conveyance path 15. 16 and fed to the vibratory linear feeder 20.

The vibratory bowl feeder 10 is provided with a static eliminator for removing static electricity generated by component conveyance, for example, an ion generator 30A for blowing ionized air toward the conveyance surface of the bowl 11. A potential sensor 31 for discriminating the potential of the charged component is provided in the bowl 11, and ionized air having a polarity opposite to the discriminated potential is blown from the ion generator 30A to the component.

The vibration type linear feeder 20 includes a vibrator 21 and a linear conveyance path 22 attached to the top of the vibrator 21. The vibrator 21 has a fixed base 23. The conveyance path 22 is coupled to the end of the transfer conveyance path 16. By transmitting the vibration of the vibrator 21 to the conveyance path 22, a component (not shown) sent to the vibration type linear feeder 20 via the transfer conveyance path 16 moves on the conveyance path 22.

The vibration type linear feeder 20 is also equipped with a static eliminator for removing static electricity generated by parts conveyance, for example, an ion generator 30B for blowing ionized air toward the upper gap 22a of the conveyance path 22 as shown in FIG. Is provided. Although not shown in the figure, the vibration type linear feeder 20 is also provided with a potential sensor for determining the potential of a component transported through the transport path 22, and ionized air having a polarity opposite to the determined potential is transferred from the ion generator 30B to the transport path. 22 may be sprayed.

The operation of the component supply device PF will be described. Parts are put into the bottom surface 14 of the bowl 11. When the bowl 11 is vibrated by the vibrator 12, the components move toward the periphery of the bottom surface 14, enter the conveyance path 15 and are aligned in a line, and are conveyed spirally along the conveyance path 15. . The component enters the conveyance path 22 that is vibrated by the vibration exciter 21 of the vibration type linear feeder 20 through the transfer path 16 from the end 15a of the conveyance path. The parts that have entered the conveyance path 22 are conveyed by the conveyance path 22 and discharged from the tip to a target position.

The bowl 11 will be described in detail. The bowl 11 is made by cutting out a non-conductor, for example. The non-conductor is, for example, a synthetic resin material made of resin, such as PET (polyethylene terephthalate), PP (polypropylene), epoxy resin, phenol resin, Teflon resin, and the like.

The effect of using a non-conductive material for the bowl 11 will be described. When a part is thrown into the bowl 11 or transported through the transport path 15, static electricity is generated due to friction between the part and the bowl 11. When static electricity is generated, charges of opposite polarity are charged on the contact surfaces of the bowl 11 and the parts. In the example of FIG. 5A, a negative charge is charged on the contact surface of the bowl 11, and a positive charge is charged on the contact surface of the component W. In this way, when charges having opposite polarities face each other at a short distance such as between the bowl 11 and the part W, positive and negative charges attract each other, so that the bowl B and the part W attract and attract each other. As a result, since the ionized air ia for static elimination from the outside does not reach between the bowl 11 and the part W, the charges charged in the bowl 11 and the part W cannot be eliminated.

Thus, even when the bowl 11 and the part W are attracted and attracted, the part moves due to, for example, a collision between the parts. Since the material of the bowl 11 is a non-conductive synthetic resin material, the electric charge charged in the bowl 11 does not move. That is, as shown in FIG. 5B, even if the component moves, the negative charge charged in the bowl 11 does not move but stops there. As a result, compared to the state shown in FIG. 5A, the bowl 11 and the part W attract each other and are not adsorbed, so that the ionized air ia for discharging from the outside is between the charged surface of the bowl 11 and the part W. The charge charged on the component W can be eliminated. Further, the charge charged in the bowl 11 can be removed. In this way, the material of the bowl 11 is made of a non-conductive material, and ionizing air for static elimination is sprayed on the bowl 11, so that static electricity generated between the part W and the bowl 11 is effectively removed in the vibration type part feeder. be able to.

Furthermore, in addition, in the case of a metal bowl, the potential of the ionized air is small because the potential of the bowl is low. Therefore, it is difficult to remove static electricity. On the other hand, in the case of the resin bowl of the present invention, the potential of the bowl surface when charged with static electricity is high, so that the force for attracting ionized air is large. Therefore, it becomes easy to remove static electricity.

Also, the vibration frequency of the vibrator 12 depends on the weight of the bowl 11. When the weight of the bowl 11 is light, the vibration frequency becomes high. If the vibration frequency can be increased, parts can be transported more quickly and in fine steps, and transport efficiency can be improved. The weight of the bowl 11 can be reduced by using resin instead of metal. That is, by making the material of the bowl 11 a non-conductive material, it is possible to improve the parts conveyance efficiency.

In the above description, the case where the entire bowl 11 is made of a non-conductive material has been described as an example, but a part of the bowl 11 can be made resin. In the bowl 11, only a portion that comes into contact with a component during transport and generates static electricity, specifically, a portion that generates static electricity as the component moves can be made of a non-conductive material. Usually, the parts are put in such a way that they drop onto the bottom 14 of the bowl 11. That is, static electricity is likely to be generated due to friction with parts at the bottom portion 14. Therefore, as shown in FIG. 6, the material of the bottom surface 14a of the bowl 51 can be made non-conductive, and the material of other parts can be made conductive. For example, the material of the bottom part 14a can be made of resin, and the material of other parts can be made of metal. In FIG. 6, the bottom 14a is shaded to indicate that the material is different from the other parts.

Also, there is a case in which the orientation of the parts is detected at a predetermined place on the conveyance path 15 and the parts not facing the correct direction are blown off with air and dropped to the bottom 14 to be re-conveyed. That is, static electricity is likely to be generated at the part where the blown-off component falls. Therefore, as shown in FIG. 7, the material of the portion 14b where the parts blown off by the air supply pipe 31 fall can be made non-conductive, and the material of other portions can be made conductive. In FIG. 7, the part 14b where the parts of the bowl 52 fall is shaded to indicate that the material is different from the other parts.

In the above description, the case where the material of the bowl 11 of the vibration type bowl feeder 10 is a non-conductive material has been described. However, the material of the conveyance path 22 of the vibration type linear feeder 20 may be a non-conductive material. Thereby, the static electricity can be effectively removed as in the case of the vibrating bowl feeder 10.

Further, in the above, the ionized air is sprayed from above the bowl 11 by the ion generator 30A of FIG. 1 to the parts transported in the bowl 11, but as shown in FIG. An appropriate number of small holes 17 may be provided near the periphery of the bottom surface 14, and ionized air may be blown upward from the lower side of the bowl 11 to the small holes 17.

The vibration frequency and strength of the vibrator 12 of the vibratory bowl feeder 10 are set so that the parts to be transported can be transported more efficiently. You can also. For example, as shown in FIG. 9, a controller 50 (50A, 50B) having a mode switching unit 40 (40A, 40B) capable of switching the operation mode between the normal mode and the static elimination mode can be provided. In the normal mode, the vibrator 12 vibrates at a vibration frequency and intensity (hereinafter referred to as an optimum value) that can more efficiently transport the parts to be transported. In the static elimination mode, the vibration is generated at a vibration frequency and intensity higher by a predetermined value than the optimum value.

FIG. 9A shows an example in which the mode switching unit 40A of the controller 50A includes a push button switch 41 for designating the normal mode and a push button switch 42 for designating the static elimination mode.

(B) of FIG. 9 shows an example in which the mode switching unit 40B of the controller 50B is configured by a panel switch. The mode switching unit 40B has a set of switches for the normal mode and a set of switches for the static elimination mode. One set of switches for the normal mode is a switch 41a for specifying the normal mode, a switch 41b for increasing the supply voltage after specifying the normal mode, and a switch 41c for decreasing the supply voltage after specifying the normal mode. One set of switches for the static elimination mode is a switch 42a for designating the static elimination mode, a switch 42b for increasing the supply voltage after designating the static elimination mode, and a switch 42c for lowering the supply voltage after designating the static elimination mode.

The controller 50B includes a display unit 43 that indicates the vibration frequency of the ion generator 30A during operation. By looking at the display unit 43, the mode switching unit 40B can be correctly operated so that the display value becomes the target value.

In the case of this controller 50B, the part conveyance speed is variable in the normal mode, and in the static elimination mode, the part conveyance speed and the amount of ionized air generated per unit time are variable, and appropriate conveyance according to the type and quantity of the parts. Speed and static elimination performance can be realized.

FIG. 10 is a diagram showing another example of the vibration type linear feeder. This vibration type linearly moving feeder 20 ′ has two component housing portions 25. Between the component accommodating portions 25, one end portion is connected to one end portion 25b of each component accommodating portion 25, and the conveyance path 26 extends parallel to the other side (right side in FIG. 10). And the component accommodating part 25 and the conveyance path 26 are given the vibration from the vibrator 27 which is supporting these from the lower side.

The parts are thrown into the upper surface of the other end 25a of each part accommodating part 25. The thrown-in components are conveyed to one end portion 25b of the component accommodating portion 25 by vibrations applied from the vibrator 27, and are gradually aligned in a row therebetween. The aligned parts are transferred one by one from the one end 25b of the component storage unit 25 to the one end 26a of each conveying path 26, and the other end (the right end in FIG. 4) of the conveying path 26. It is conveyed to. The parts conveyed to the other end of the conveyance path 26 are discharged toward the target position.

In the vibration type linear feeder 20 ′, at least the end of the component accommodating portion 25, that is, the region where the component falls into the component accommodating portion 25 from the component input pipe, preferably the entire region of the component accommodating portion 25 and / or the conveyance path. Part or all of 26 is made of resin.

By virtue of such resinization, in the vibration type linear feeder 20 ′, even if static electricity occurs due to contact friction between the component and the component storage portion 25 or the conveyance path 26, or due to contact friction between the components, the component is stored in the component storage portion. 25 or the transport path 26 can be smoothly transported without being attracted by electrostatic force. Therefore, the vibration type linear feeder 20 ′ can also effectively remove static electricity from moving parts by providing an ion generator and blowing ionized air toward the part accommodating part 25 or the conveyance path 26.

It is preferable that the vibration type linearly moving feeder 20 ′ also includes a controller 50 having a mode switching unit 40 that can switch the operation mode to the normal mode and the static elimination mode as illustrated in FIG. 9.

In the above description, the component supply device PF includes the vibrating bowl feeder 10 and the vibrating linear feeder 20. However, the component feeder PF includes either the vibrating bowl feeder 10 or the vibrating linear feeder 20. It can also be done.

10 Vibrating bowl feeder 12 Exciter 13 Bowl 14 Bottom
DESCRIPTION OF SYMBOLS 15 Conveyance path 20,20 'Vibrating linear feeder 21 Exciter 22 Conveyance path 30A, 30B Ion generator (static elimination apparatus)
31 Potential sensor

Claims

A component storage unit that conveys the components to be accommodated by vibration; and
In a component supply apparatus using a vibratory part feeder having a vibrator for applying vibration to the component housing part,
In the vibratory parts feeder, at least a portion where static electricity is generated during component transportation is a non-conductive material.
The component supply apparatus according to claim 1,
The component supply apparatus, wherein the non-conductor is a resin.
In the component supply apparatus according to claim 1 or 2,
The vibratory part feeder is a vibratory bowl feeder, and the whole or part of the bowl is made of resin.
In the component supply apparatus according to claim 1 or 2,
The vibratory parts feeder is a vibratory linear feeder, and the whole or a part of the alignment unit of the vibratory linear feeder is resin.
The component supply apparatus according to any one of claims 1 to 4,
The component supply device further comprising a static elimination device that sprays ions for static elimination toward a portion through which the component passes in the vibration type part feeder.
In the component supply apparatus according to claim 5,
Provide a potential sensor to determine the potential of charged parts,
The said static elimination apparatus sprays the ionized air of the reverse polarity of the electric potential which the said electric potential sensor discriminate | deposited on the component.
The component supply apparatus according to any one of claims 1 to 6,
A component supply device including a controller that can switch between an operation mode of normal vibration intensity and a static elimination mode that vibrates more strongly than that at least two modes.