JPH0551117A - Parts sorting chute - Google Patents

Abstract

PURPOSE:To sort and remove parts such as a resistor consisting of a shaft part and the expanded parts of both its ends, both non-finished parts without either or both of expanded parts. CONSTITUTION:An inclined part 9 is provided near the outlet of a pair of guide plates 2, and a dropping port 12 for dropping the expanded part 6 onto the inclined part 9 is also provided.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a part selection chute. More specifically, the present invention relates to a chute for selecting and removing defective products while feeding the components on the vibration feeder when the components are supplied.

[0002]

2. Description of the Related Art A resistor, which is a type of electronic component, consists of a cylindrical element and caps (terminals) that are press-fitted at both ends, and the work of putting the cap on the main body is done by an automatic capping machine (NAS). I'm doing it. A resistor with a cap attached is, for example, a chute shown in FIG.
An element which is sent to the next stage (in FIG. 5, a parts feeder 55 for sending to the next measurement step) by a vibration feeder 54 having a mini-vibrator 52, a basket 53, and a cap 56 which is not covered in the middle thereof. Only 57 parts NG1 are sorted out as defective products. That is, the chute 51 has a large number of guide plates 59 arranged in parallel through a gap 58 having a width W that allows only the element 57 to pass, without passing through the cap 56, and those without the cap 56 are dropped from the gap 58. I am trying to let you.

[0003]

[Problems to be Solved by the Invention] Caps 56 on both ends
The component NG1 without the mark can be eliminated by the conventional chute 51, but the component NG2 having a cap fitted only on one side cannot be eliminated by the conventional chute 51.

Therefore, there is a problem that a trouble occurs in the next measurement process and the production line is stopped.

To cope with such a problem, by utilizing the fact that the component NG2 having the cap 56 on only one side is suspended in the gap 58 of the guide plate 59, the baffle plate 60 is provided near the outlet,
It is also possible to stop the progress of NG2. However, such a method cannot automatically exclude the component NG2. Therefore, it will stay there until the operator finds it and removes it. As a result, the next part is also stopped, the transport efficiency is reduced, and the burden on the operator is large.

It has been found that when the time further elapses, the component NG2 is pushed by a component coming from behind to get over the baffle plate 60 and a defective product flows to the next process.

An object of the present invention is to provide a parts selection chute capable of appropriately selecting an unfinished part NG2 having a cap on only one side or a part of a similar form.
That is, the present invention is a component capable of selectively removing both a component lacking both of the enlarged portions and a component lacking one of the enlarged portions from the components originally having the enlarged portion (caps) at both ends of the shaft portion. It is intended to provide a sorting chute.

[0008]

The selection chute of the present invention has: (a) a pair of guide plates arranged with a width that allows only the shaft portion (element) to pass, not the enlarged portion (cap). (B) upper surfaces of the pair of guide plates are provided with a flattened passage portion and an inclined portion formed near the outlet end and inclined downward toward the outlet end, ) A feature is that the inclined portion is formed with an outlet through which the enlarged portion can penetrate in the axial direction.

[0009]

In the same way as the conventional selection chute, the parts lacking both the enlarged portions at both ends fall into the gap between the guide plates on the way through the passage part of the guide plates and are removed.

On the other hand, for a component having only one bulge, the shaft falls into the gap between the guide plates while passing through the passing portion, and the bulge is conveyed in a state of being caught on the upper surface of the guide plate. Then, the enlarging part is dropped and removed at the outlet of the inclined part.

In the case of a part having an ampoule on both ends, one ampoule (especially the ampulla in front) falls somewhat at the outlet of the inclined part, but it does not fall completely because it falls from the side, and it escapes again due to vibration. Can be done. In other words, the enlarging part is surely supported by the guide plate, and since it is inclined, the action such as momentum on the parts is added,
Escape from the outlet in a short time and exit from the exit end.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the sorting chute of the present invention will be described below with reference to the drawings. In the following description, a selection chute for resistors will be described as a representative, but the present invention is not limited to such a case, and a selection chute for various parts of substantially the same form is also included in the present invention. included.

FIG. 1 is a partially cutaway perspective view showing an embodiment of the sorting chute of the present invention, FIGS. 2 and 3 are longitudinal sectional views and longitudinal sectional views of the sorting chute of FIG. 1, and FIG. It is a partial cross-sectional side view which shows an example of the components sorted by the sorting chute of the invention.

In FIG. 1, reference numeral 1 is a chute having four guide plates 2, and B is a basket for storing defective products which is attached to the lower part of the chute 1.

The chute 1 has four guide plates 2 of the same shape.
Is provided at a predetermined interval W with three connecting blocks 3 at the front, rear, and center. That is, in the portion other than the connection block 3, the gap 4 penetrates in the vertical direction. Such a chute 1 is manufactured, for example, from an aluminum alloy by alumite coating.

The distance W between the guide plates 2 is slightly smaller than the diameter of the enlarged portion 6 of the component 5 to be selected and slightly larger than the diameter of the shaft portion 7. For example, the component 5 is the resistor R shown in FIG. 4, the diameter D of the cap C (enlarged portion) is 2.12 ± 0.10 mm, and the diameter d of the element S (shaft portion) is 1.64 ±.
In the case of 0.03 mm, the distance W is about 1.7 to 1.8 mm, and the thickness w of the guide plate 2 is about 1.1 to 1.2 mm.

The upper surface of each guide plate 2 is divided into a passage portion 8 which is flat at the same level and an inclined portion 9 near the outlet end. The inclination angle of the inclined portion 9 (θ in Fig. 2) varies depending on the slip resistance and the strength of the vibrator, but is usually 20 to 30 °.
Form with a degree.

On the inner side surface 10 of the inclined portion 9, there is formed an outlet 12 which is a cylindrical notch 11 which is substantially orthogonal to the inclined portion 9. The diameter of the outlet 12 (D2 in FIG. 2) is usually made larger than the diameter of the enlarged portion 6 by about 0.05 mm (that is, about 2.17 mm).

As the basket B, a product molded from a transparent acrylic resin or the like is used.

Next, a shoot 1 constructed as described above
The operation of will be described with reference to FIGS. Figure 2 shows unfinished parts
FIG. 3 shows a state in which NG1 and NG2 are dropped / excluded from the chute 1, and FIG.

NG1 in FIG. 2 is an unfinished part NG1 having only a shaft portion and no enlarging portion. This NG1 passes through the gap (4 in FIG. 1) of the guide plate 2 as it is in the conventional chute, and is in the basket B. Fall into.

On the other hand, in the unfinished part NG2 consisting of the shaft portion 7 and the one enlarged portion 6, the enlarged portion 6 of the passage portion 8 is caught on the upper surface of the guide plate 2, so that the vibration of the mini-vibrator causes the uncompleted component NG2 to move in the direction of arrow J. Sent to. Then the slope 9
When it comes to the outlet 12, the diameter D2 of the outlet 12 is larger than the diameter of the enlarged portion 6, so that it falls in the direction of arrow K.

The difference in diameter between the enlarged portion 6 and the outlet 12 is 0.05 mm.
Even if the size is small, the guide plate 2 is vibrating and falls relatively smoothly.

As a result, two types of unfinished parts NG1 and NG2
Can be collected in the basket B and returned to the automatic capping machine again.

Next, the finished part 5 having the enlarged portions 6 at both ends
With respect to the above, as shown in FIG. 3, even if one of the expanded portions 6a rides on the drop opening 12, it does not completely fall into the drop opening 12 because the expanded portion 6 has a certain length in the axial direction. Therefore, the vibration of the guide plate 2 and the force of the slanting portion 9 which tends to slide down together cause the guide plate 2 to drop from the outlet end as indicated by the arrow L.

Although the preferred embodiment of the component selection chute of the present invention has been described above, the present invention is not limited to this, and for example, the cross-sectional shape of the outlet or the inclination angle can be changed, or the chute can be turned downward. Various modifications can be made according to the target component, such as adopting a frustoconical shape that expands.

If it is difficult for the enlarging portion 6 to fall through the drop opening 12, the size of the drop opening 12 may be increased within an allowable range such that the finished product does not easily drop from the drop opening. Even if the number of finished products falling into the basket increases, it does not cause a big obstacle.

[0028]

The parts selection chute of the present invention can eliminate not only the unfinished parts lacking the enlarging parts on both sides but also the unfinished parts lacking one enlarging part, thus improving the operation rate of the production line and the product. Results in improved quality.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a sorting chute of the present invention.

FIG. 2 is a vertical cross-sectional view taken along the clearance of the sorting chute of FIG.

FIG. 3 is a vertical cross-sectional view of a main part along a clearance of the sorting chute of FIG.

FIG. 4 is a partial cross-sectional side view showing an example of parts to be sorted by the sorting chute of the present invention.

FIG. 5 is a partially cutaway perspective view showing an example of a conventional selection chute.

[Explanation of symbols]

 1 Chute 2 Guide plate 5 Parts 6 Enlarged part 7 Shaft part 8 Passing part 9 Inclined part 12 Drop port

Claims (1)

[Claims] 1. A parts selection chute for selecting and removing an unfinished part lacking at least one of the expanded parts, which is composed of a shaft part and expanded parts provided at both ends of the shaft part, wherein: A pair of guide plates that are arranged with a width that allows the shaft portion to pass therethrough, and (b) the upper surfaces of the pair of guide plates are flattened in the passage portion and near the outlet end. A part selection chute, which is provided with an inclined part that is formed so as to descend toward the outlet end, and (c) is formed with an outlet through which the enlarged part can be axially penetrated.