JPS6055202A - Device for selecting and discharging capsule of defective outer shape automatically and continuously - Google Patents

Abstract

PURPOSE:To execute the testing and sorting work of capsules automatically and continuously by forming an air-pressure hole for exhausting air to extrude a capsule passing through a capsule gauge from a gauge hole on the capsule gauge. CONSTITUTION:The inlet part of a guide gauge 2 is cut off obliquely, so that a capsule can be guided to the guide gaude hole. A testing gauge 4 is arranged on the outlet side of the guide gauge 2 and the testing gauge 4 consists of a limitation gauge 4a and a pressed air gauge 4b having the air-pressure hole for injecting air to the periphery of the capsule and extruding the capsule to the limitation gauge 4a. Thus, the testing and sorting work of capsules can be performed automatically and continuously.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for automatically and continuously sorting out and discharging defective capsules.

In general, a capsule consisting of a body and a cap tends to have poor connection during assembly.

In other words, the body and cap collide and part or all of them are crushed, or the side wall of the cap splits (cracks).
, or a part of the side wall of the body is torn and protrudes outside the side wall of the cap (hangnail), resulting in various defective products.

By the way, all of the defective capsules described above have deformed bodies, bulging in either direction relative to the true cylindrical shape of the non-defective capsules. This means that a defective capsule always has a larger outer diameter of the body than a good capsule in a certain part, and therefore, to distinguish between the two, it is necessary to detect the difference in the outer diameter. It is possible to sort out defective capsules mixed in with good capsules.

In Japanese Patent Publication No. 54-4150'9, the following invention was completed by paying attention to the above points. In other words, as a specific detection means, an annular gauge is used that has a hole diameter that allows good capsules to pass through easily but that makes it difficult for defective capsules to pass through. automatically detected and eliminated.

Therefore, inspection by visual inspection and fatigue of removal workers have been improved.

However, in the above-mentioned invention, since the capsule is of a type in which the capsule passes through the inclined capsule gauge by self-sliding, the capsule frequently gets clogged in the gauge, and when removing the clogged capsule, it is necessary to After tilting the gauge in the opposite direction, a compressed air nozzle blows out the capsule toward the inlet of the gauge.

Therefore, the inspection and sorting of capsules was slowed down.

The present invention was invented in view of the above-mentioned points, and an object of the present invention is to provide an apparatus that can automatically and continuously perform the inspection and sorting of capsules, and has good inspection accuracy and can speed up the inspection. For this purpose, we adopted the following configuration.

That is, the capsule gauge was provided with a pressurized air hole for discharging air to force out the capsule passing through the gauge hole from the gauge hole.

According to the present invention, the capsules, which tend to stagnate due to air being blown out from the pressure holes, do not pass through the gauge at a constant speed and become clogged, and the capsules can be fed at high speed, increasing speed. It is characterized by high detection accuracy even for capsules that are deformed and deformed.

The embodiments shown in the drawings will be described below.

In FIG. 1, (1) is a turntable for supplying capsules, which is of an inclined type and sequentially arranges capsules in a row and supplies them to a tubular guide gauge (2). The entrance portion of the guide gauge (2) is cut diagonally so that the capsule can be smoothly guided into the guide gauge hole.

There is an inspection gauge (4) on the exit side of the guide gauge (2), which has the following configuration.

In other words, a limit gauge (4a
), a pressurized air gauge (4b) having a pressurized air hole (8)'E that blows air around the capsule and pushes the capsule to the limit gauge (4a), and an insertion end of the capsule (4C). Specifically, the flange (7) 8 of the insertion end (4c) is fitted into the large-diameter stepped portion (6) of the guide gauge hole (2a), and then the compressed air gauge (4b) with the pressure air groove is inserted into the large-diameter stepped portion (6) of the guide gauge hole (2a). It is screwed onto the outlet side of the stepped portion (6) and fixed with a lock nut (8) fitted onto the pressure air gauge (4b), and the insertion end (
The conical portion (9) of 4C) and the groove of the conical hole of the pressure air gauge (4b) form a pressure hole (a), and the discharge port opens in a direction parallel to the direction of travel of the capsule. A compressed air supply hole (river) is formed between the compressed air gauge end and the flange (7), and this is communicated with the compressed air supply pipe (b).

A limit gauge (4a) is fitted to the tip of the pressure air gauge (4b), and is fixed by screwing a limit gauge holder (b) onto the pressure air gauge (4b).

Now, the capsules aligned in a line by the rotation of the turntable (1) are sequentially inserted into the guide gauge (2) whose entrance part is cut diagonally and has a relatively wide opening, and then It advances into the inspection gauge (4) from the insertion end (4C) with the larger inner diameter. At that time, the continuously fed capsules are moved to the front limit gauge (4a) by the air pressure from the pressure hole Qo of the pressure gauge (4b).
ζ is fed at a constant speed. The movement of capsules tends to stagnate inside the gauge, but according to this device, the capsules are pushed out with a constant pressure, so the capsules are sequentially transferred and inserted into the limit gauge (4a).

As a result, the pressing force is also constant, so inspection accuracy can be improved.

Among the capsules inserted into the limit gauge, capsules whose external dimensions have increased by about 0.02% due to crushing, biting, chipping, etc., are caught in the limit gauge (4a).

When the capsule gets caught in the limit gauge (4a), the sensor (3) attached to the guide gauge (2) detects an abnormality, which activates the ejection drive device (6) shown in Figure 1. The ejector (5) is rotated from the position shown by the imaginary line to the position shown by the solid line, and the ejector (5) is moved by vacuum from a pipe (5b) connected to a vacuum pump (not shown).
) The defective capsule is sucked from the limit gauge (4a) into the pocket hole (5a) of the limit gauge (4a).

When suction is finished, the ejector rotates 180° and the limit gauge (
4a), the vacuum in the ejection device (6) is then switched to compressed air, and the defective capsule is ejected to the outside through the pocket hole (5a).

In this way, when a capsule is caught in the gauge, the detection means detects this and activates the ejection device, which actively sucks out defective capsules from the outlet side of the gauge instead of the inlet side of the gauge, so that the capsules are continuously removed. There is no stagnation even when the capsules are fed, and capsules with defective external shapes can be continuously screened and discharged.

As described above, this inspection device is capable of ejecting only defective capsules without damaging them reliably.

The detection rate is determined by the dimensional tolerance between the inner diameter of the limit gauge (4a) and the outer diameter of the capsule. In addition,
The structure of the pressure air hole α is that in addition to the groove shape shown in FIG. 2, there is also a ring-shaped gap formed between the pressure air gauge (4b) and the insertion end (4C) as shown in FIG. Various designs are possible, such as one in which a radial air passage is formed in the pressure air gauge (4b) as shown in FIG.

Since the device of the present invention discharges air from the pressure hole into the gauge hole, the capsule does not stagnate in the gauge hole, and the capsule caught in the capsule gauge is actively sucked out at the outlet hole of the gauge. Since the capsules are removed by a discharge device, inspection and sorting of the capsules does not stop the work.

To describe the above point more specifically, since air is fed into the gauge hole and accelerated one capsule at a time, the capsule inspection speed can be increased.

In addition, if air pressure is not applied, for example, the capsule may become clogged in the limit gauge due to stagnation in the supply of capsules and be determined to be a defective product, or it may be pushed out by the subsequent pressure of the capsule, causing some deformation of the capsule. There are cases where the limit gauge is passed. However, since the device of the present invention applies a constant air pressure to the outside of the capsule, the pressure against the capsule inserted into the limit gauge is always constant, so it is possible to reliably determine whether the capsule is good or bad depending on whether it is crushed or deformed. can do.

When defective capsules found through visual sorting were actually sorted using this device, the following results were obtained.

Capacity 1500 P%-200041° Detection rate 80
~90% Reproducibility 100% As shown above, since the reproducibility is 100%, it can be seen that the determination can be made reliably.

Note that the above detection rate was adjusted by the difference in size of the limit gauge.

Furthermore, since the present invention can achieve the purpose by configuring a limit gauge that allows capsules to pass through, it can be extremely miniaturized as a good/bad sorting machine, and can be linked with a capsule filling machine, a visual sorting machine, or Easy to link with packaging machines.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view of the device of the present invention. Figure 2 is a cross-sectional view of the essential parts of the device of the present invention. FIG. 2 is a cross-sectional view of a main part of the device of the present invention according to an embodiment. (2)・・・・・・・・・・・・Guide gauge (
4)・・・・・・・・・・・・Inspection gauge (4a
)......Limit gauge (4b)...
・・・・・・・・・Pressure air gauge (4C)・・・・・・・
・・・・・・Insertion end (5)・・・・・・・・・・・・・・・
...Discharge device Fig. 5 2 Fig. 6

Claims (1)

[Claims] In a defective capsule inspection device that discriminates between good and bad capsules by passing the capsule through a capsule gauge having an inner diameter that allows good capsules to pass easily but makes it difficult for defective capsules to pass through, the capsule gauge is A device for automatically and continuously selecting and discharging capsules with external defects, the capsule gauge having a pressure hole for discharging air to push the passing capsules out of the gauge hole.