JPH0616328U - Hopper - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a hopper that removes electric charges when discharged from its discharge port, even when storing easily charged parts depending on the atmosphere. [Structure] An electrostatic remover 5 is attached to the inner wall surface of the hopper 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention particularly relates to a hopper that stores a large amount of small electronic components.

[0002]

[Prior art and its problems]

 Recently, a large amount of small electronic parts, such as transistors, are stored in a hopper, which is then cut out by an electromagnetic vibration feeder and supplied to a vibrating parts feeder, and the vibrating parts feeder is placed in a predetermined posture and supplied to the next process. It is widely known that such a device is used. However, the transistor has several electrodes made of metal attached to the mold made of synthetic resin.Since the mold part made of this synthetic resin is an insulating material, a large amount is stored in the hopper and the air is dried. It is often charged while it is moving, and for this reason, it is cut out from this hopper by an electromagnetic vibration feeder and is transferred by torsional vibration on a spiral track formed on the inner peripheral wall of the bowl of the vibrating parts feeder. , Some kind of parts aligning means arranged close to each other in the course of this track-like transfer is corrected to a predetermined posture, or those not in a predetermined posture are excluded by this, and the next step 1 Each piece is supplied in a predetermined posture, but if a small transistor is charged, the torsional vibration of the bowl of the vibration parts feeder, especially the frequency, When the swing is small and the swing is small, an electrostatic attraction force is generated between the track surface and the track, and depending on the magnitude of the swing, the transfer speed becomes very small, and in some cases it may stop. . Further, as described above in the parts feeding means, the transistors which are in the predetermined posture or which are not in the predetermined posture are removed inside the bowl, but these feeding operations should be carried out smoothly. May not be possible.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of the above problems, and in the case where a component is charged, it can be removed and supplied to various types of vibrating feeders or vibrating part feeders so that the transfer operation can be performed smoothly. The purpose is to provide a possible hopper.

[0004]

[Means for solving problems]

 For the above-mentioned purpose, the supporting portion made of a conductive material and the static electricity eliminator made of carbon fibers or metal fibers, which are attached to the supporting portion in a brush shape in a large amount, are attached to the inner peripheral wall portion or the discharge port portion. It is achieved by a hopper, characterized in that

[0005]

[Action]

 Since the static electricity eliminator is fixed to the inner peripheral wall of the hopper or its discharge port, when a component, such as a transistor, comes into contact with the carbon fiber or metal fiber, the electric charge of this charged body becomes a leakage current to the supporting portion. Since the normal hopper is made of metal and is grounded, a leakage current flows through the inner wall of the hopper, and the electric charge carried by the component can be released to the ground through the inner wall of the hopper. Therefore, the parts discharged from this hopper are not charged, and when they are transferred by various electromagnetic vibration feeders and vibration parts feeders supplied from this discharge port, or when they are subjected to some sort of feeding action. This can be done smoothly.

[0006]

【Example】

 Hereinafter, a hopper according to an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, a vibrating component supply apparatus is mainly composed of a hopper 1, an electromagnetic vibrating feeder for cutting disposed immediately below the discharge opening, and a vibration for feeding, for example, an electronic component cut out from the feeder. It consists of a parts feeder 3.

As shown in FIG. 2, the hopper 1 has an upper portion having a rectangular tube shape, and a lower portion connected to the upper portion has a quadrangular pyramid shape. On the inner peripheral wall portion of the hopper main body 4 formed as described above in the hopper 1, the static eliminator 5 shown in FIGS. 4 and 5 according to the present invention is attached as shown in FIG. On the outer wall portion of the discharge port portion 4a, the static electricity removing body 5 having the same configuration has the discharge opening 12 having a rectangular shape, and thus the static electricity removing body 5 is attached to each side thereof. Although the shape is clearly shown in FIGS. 4 and 5, a large number of fibers 31 made of a special metal are attached in a brush shape to a strip-shaped plate member 30 made of aluminum. As shown in FIG. 5, this is mounted in alignment, which is, for example, a static eliminator sold under the trade name "Achillesnon Spark". Although various sizes of the strip-shaped plate member 30 are commercially available, according to the present embodiment, the plate member 30 is arranged in the hopper 1 as shown in the drawing. The electrostatic remover 5 is used.

The electromagnetic vibrating feeder 2 arranged just below the discharge opening 4a of the hopper 1 is constructed in a known manner, and its trough 10 is a lower base block 11 and a pair of front and rear inclined plates. They are connected by a spring 13, and an electromagnet 15 around which an electromagnetic coil is wound is fixed on the base block 11. The movable core 14 is fixed to the bottom wall surface of the trough 2 with a gap therebetween. The electromagnetic vibration feeder is constructed as described above, but the whole is supported by the vibration-proof spring 12 on the base. Further, according to the present invention, as shown in FIG. 2, two static eliminators 16 are fixed to the trough 12 in a direction perpendicular to the longitudinal direction of the trough 10. This has the same structure as the static eliminator 5 provided in the hopper 1, but only the dimensions are different. Further, a similar static remover 16 is provided on the outer wall surface of the discharge end of the trough 10.

The vibrating parts feeder 3 is constructed in the same manner as the conventional one, and a torsional vibration driving section 22 is attached to the lower side of the bowl 17, but the whole is supported by a vibration damping rubber 21 on a base. There is. As is well known, a spiral track 18 is formed on the inner wall surface of the bowl 17, and a parts feeding means is attached to the bowl 17 although not shown. As a result, according to the present embodiment, the transistor is set in a predetermined posture and is supplied to the next process, for example, the robot from the linear track portion 19 as its discharge end. Immediately above the central bottom portion 20 of the bowl 17, the discharge end portion of the trough 10 of the electromagnetic vibration feeder 2 is disposed so as to face it.

The hopper of the embodiment of the present invention and the component supply device including the hopper are configured as described above. Next, the operation will be described.

First, the operation principle of the static removers 5 and 16 will be described with reference to FIG. As shown in A of FIG. 6, if the grounded needle electrode 40 is disposed toward the charged body 41, a non-uniform electric field is formed as shown in A of FIG. A gas ionization phenomenon occurs in the vicinity of the needle-shaped electrode 40 where the strength is increased, and positive and negative ion pairs are generated there as illustrated. Of these ions, the ions having the opposite polarity to the charge of the charged body 41 are attracted to the charged body 41 side and are combined with the negative charge to be neutralized and discharged.

Further, as shown in FIG. 6B, when the needle electrode 40 is brought into contact with the charging body 41, the negative charge charged in the charging body 41 is applied to the needle electrode 40 as a leakage electrode flow. It flows in as shown in the figure, and the charge is removed by this. As described above, even if the needle electrode 40 is close to the charged body 41, the charge is removed. According to the present embodiment, the one corresponding to the needle electrode 40 is the charge remover 5 or 16. Supports fibers made of special metal.

Although not explicitly shown in the hopper 1, it is assumed that a large number of transistors as small electronic components are stored. When the electromagnetic vibration feeder 2 for cutting out is driven in this state, the small transistor discharged from the discharge opening 4a of the hopper 4 is transferred to the right in the figure by the vibration of the trough 10 and the bowl of the vibration parts feeder 3 is moved. It is discharged onto the central bottom of 17.

The bowl 17 of the vibrating parts feeder 3 also oscillates in a torsional manner as is known, and the transistors are transferred along the track 18 in a single row or in a single layer. If the electrode or the body does not have a predetermined posture or shape by the feeding means, it is removed inside the bowl here, or the body is placed in a predetermined posture and the linear track portion 19 is addressed to the next step. Supplied.

It is particularly easy to charge the air when it is dry, but it is assumed that a large amount of transistors stored in the hopper 1 are charged. In this case, the transistors are sequentially discharged from the discharge opening 4a by driving the electromagnetic vibration feeder 2, but the discharger 5 is made of a special metal during the flow in the hopper 1. Even if it is charged by contacting or indirectly contacting the fiber portion, this charge is removed and the inner wall of the hopper 1 is grounded, so that the charge is released to the ground. Further, since the static eliminator 5 is fixed to the outer wall portion of the opening of the discharge opening 4a on the four sides, the electric charges charged in the transistor are removed even when discharged from this area, and the electromagnetic vibration feeder is removed. The second trough 10 is further transferred to the right side in the figure by vibration, but according to the present embodiment, the trough 10 is also provided with the static eliminator 16 and is directed downward to form a brush. Even if the transistor comes into contact with a large amount of special metal fibers arranged and is still charged, not only the charge is surely removed here, but also the central bottom portion 20 of the vibration part feeder 3 is removed. Even when discharged, the fibers made of the brush-like special metal of the static eliminator 16 are arranged in the entire width direction at the discharge end, as shown in FIG. Exhausted to the center bottom 20 of ul Will be completely its charge is removed when it is.

As described above, since the track 18 formed on the inner peripheral wall of the bowl 17 of the vibrating parts feeder 3 is not charged at the time of being transferred by the torsional vibration, the torsional vibration has any amplitude and frequency. However, even when the parts are fed smoothly, even if the transistors of the parts are very small, for example, 1 mm × 2 mm × 3 mm, the desired feeding operation can be surely performed. It is possible to supply one unit from the track unit 19 to the outside in a predetermined posture.

FIG. 3 shows a hopper according to a second embodiment of the present invention, which has a conical shape, and its inner peripheral wall portion is made of an annular aluminum unlike the first embodiment. By the attaching member 56, a large number of fibers made of a special metal, which are attached in a brush shape toward the inner diameter of the hopper 50, are arranged as shown in the drawing. An electrostatic eliminator 52 having a smaller diameter but a similar structure is arranged on the inner peripheral wall portion. An aluminum mounting plate 57, which is a conductive material, is fixed to the inner peripheral wall of the hopper, like the electrostatic eliminator 51 on the upper side. Fibers made of metal are attached.

It is clear that such a hopper 50 also has the same effect as the hopper 1 of the first embodiment.

Although the respective embodiments of the present invention have been described above, needless to say, the present invention is not limited to these, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiment, the static eliminating body 16 is provided not only on the inner peripheral wall portion of the hopper 1 but also on the trough 10 of the electromagnetic vibration feeder 2 for cutting out a small transistor as a component from this. Although they are fixed, even if they are omitted, they can be omitted if the transistors cut out from the discharge opening 4a of the hopper 1 can already be uncharged.

Further, in the above embodiment, the component supply device including the electromagnetic vibration feeder 2 and the vibration part feeder 3 provided below the discharge opening 4a of the hopper 1 has been described, but of course not only such a component supply device is used. The present invention can be applied to a case where a small electronic component such as a transistor is simply supplied to the container which is composed of the hopper 1 and is disposed below the discharge port. In this case, the transistor supplied to the container is not electrostatically charged. Therefore, even if the container is discharged and supplied to the vibrating parts feeder 3, for example, the same effect as that of the vibrating parts feeder 3 can be obtained.

In addition, although the metal fibers are attached in a brush shape in the above electrostatic removers 5 and 16, carbon fibers may be attached instead of the metal fibers.

[0024]

【The invention's effect】

 As described above, according to the hopper of the present invention, even in the case where the parts are stored in an atmosphere where they are very easily charged, no uncharged parts can be discharged from the discharge port.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a component supply device provided with a hopper according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a plan view of a hopper according to another embodiment of the present invention.

FIG. 4 is an enlarged side view of the static eliminator applied to the apparatus.

FIG. 5 is a front view of the same.

FIG. 6A is a schematic diagram for explaining the principle of operation of the electrostatic eliminator, and B is a schematic diagram for explaining another similar principle of operation.

[Explanation of symbols]

 1 Hopper 5 Static Eliminator 16 Static Eliminator 30 Mounting Plate 31 Metal Fiber 50 Hopper

Claims (1)

[Scope of utility model registration request] 1. A support part made of a conductive material and a static electricity eliminator made of carbon fibers or metal fibers, which are attached to the support part in a brush shape in a large amount, are attached to an inner peripheral wall part or an outlet part. Characteristic hopper.