JP4416307B2 - Pinhole inspection machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a pinhole inspection machine that inspects for sealing defects such as pinholes in various bottle-shaped sealed packaging containers that are formed of an insulating material such as resin and filled with food, cosmetics, medicines, or the like. .
[0002]
[Prior art]
Conventional pinhole inspection apparatus, especially as pinhole inspection apparatus sealed ampoules, JP 56-133654, JP-Sho 58-182548 and JP also as pinhole inspection apparatus of a similar bottle, especially An automatic star wheel type or a large-scale apparatus close to this is known as disclosed in Japanese Utility Model Publication No. 55-19490 .
[0003]
In these methods, the problem of test obstruction due to gas insulation at the time of voltage application due to the presence of gas such as air or gas in the sealed container of the subject is not considered in spite of being a complicated mechanical device. . Accordingly, as the selection of the electrode structure, in order to achieve the intended purpose applied voltage without straw contracture contactless crab or contact against the test inhibition for insulation due to the presence gases to the subject is application method inevitably high voltage that has been adopted.
As a problem for this , when a high voltage close to the dielectric breakdown voltage of the container material is applied, in the case of a thin container, a local pseudo pinhole dielectric breakdown, that is, an accident of inadvertent drilling, etc. is induced. There was also a possibility.
[0004]
[Problems to be solved by the invention]
Pinhole inspection devices such as medicinal ampules are generally large and have a complicated mechanism. Conventionally, it has been possible to realize a safe, low-cost and sufficient performance device including the above-mentioned problem of increasing the applied voltage. There was a strong demand.
[0005]
[Means for solving problems]
The present invention eliminates the influence of inspection hindrance for insulation due to gas when a voltage is applied when a gas is present in a substantially bottle-shaped chemical solution such as a medical ampoule, and further reduces the volume of the gas. so as compressed to reduce the influence of gas, the like, order to achieve inspection of pinholes in the applied method using a lower voltage, and the like having the following constitutions.
(1) for conveying in the longitudinal direction of the object and perpendicular the conveying direction, the conveying direction and perpendicular cross-section of the flat belt of the horizontal level conveyed by the inspection apparatus section, is inclined from the horizontal level by a certain angular degree, at the same angle as avoid gas in ampoules which are stacked bottom of the ampule or the like by buoyancy (on inspection unit) and the inlet portion from (on inspection unit), always creating the state of only the liquid contact portion with no gas both inspection unit However, the inspection is performed by applying a reliable voltage.
(2) Furthermore, in cases such as when a gas is a large amount more than necessary, pressurized strong point in the above configuration, as pressed against rotation on a part of the upper torso of a subject under examination, load adjustable rotation to the presser roller Thus, the body was lightly compressed and transported while reducing the volume of gas, thereby enabling reliable inspection.
Further, at the time of examination of some pinholes and poor sealing Wakashi when air body is large, the pressure load of the pressing roller rotating, by gas volume for leakage of the contents gases from pinholes is compacted proper state Can be maintained.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
【Example】
A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a plan view of a subject 40 to be inspected according to the present invention. As can be understood together with the front view of FIG. 2, a plurality of resin-made disposable eye drop bottles are formed in parallel in an adjacent chain shape. cage, respectively shown in 41 and 42, in the welding process tends to occur defects main inspecting unit a and the main test unit at B for content chemical sealing, here a number sites that require inspection.
[0007]
FIG. 3 shows a connection of a test object 40 conveyed by the conveyor belt 10 and on the abutment 3 of the inspection apparatus unit 20 to the inspection required parts 41 and 42 by the power source 32 with the electrode 1 and the electrode 2. 4 is an explanatory diagram of a state in which an applied voltage is applied via 34. FIG. The subject 40 together with the conveyor belt 10 is inclined at an angle α shown in the figure. As shown in the figure, the gas a moves to the shoulder located between the two inspection parts 41 and 42 by buoyancy, and Wa on the liquid surface of the content chemical solution. Indicates a position where both of the required inspection parts 41 and 42 are avoided, and both of the required inspection parts 41 and 42 are in a liquid contact state.
[0008]
The tilt angle α is supported by the abutment 3 so that it can be freely rotated at the fulcrum 4, so that it can be fixed after adjustment so that both inspection parts 41 and 42 are in contact with each other as shown in the figure. It is configured as follows.
[0009]
4 is a plan view of the inspection apparatus unit 20 in a state where a plurality of adjacent chain-like subjects 40 are close to the width L of the abutment 3, and FIG. 5 is a side view of the inspection apparatus unit. It is explanatory drawing to which the belt conveyors 50 and 60 of a post process are connected.
[0010]
FIG. 6 is an explanatory diagram of the second embodiment. The pressing roller 5 to engage rotation in the machine base rotated freely supported on bearings 8 disposed on the lever 9 tip, the body of the subject 40 in passing through the abutment 3 of the inspection device 20 shows a state where the upper is rotating pressure, the pressure load by the pressing force adjuster 6, is adjusted to a proper load.
[0011]
Further, the interval between the outer peripheral lower portion of the rotating presser roller 5 and the conveyor belt 10 is adjusted and set to an appropriate interval so that an appropriate deformation of the subject due to the pressure contact load can be obtained when the subject passes. The rotating presser roller 5 is driven in the P direction by the electric motor 7 so that the subject can be forcibly compressed and reduced in volume while the object is being transported and inspected.
[0012]
Next, a description by a mechanism and operation of the effective Hateoso the first embodiment. FIG subject 40 carried into the inspection device 20 from the conveyor 50 of the previous step in 5 is inclined at an angle α on abutment 3 of the inspection apparatus 20 of the conveyor belt 10, by simultaneously electrode 1 and the electrode 2 A voltage is applied to both inspection units 41 and 42. In this state, since the appropriate inclination angle α is adjusted in advance, the gas a is completely inspected by the buoyancy as shown in FIG. It is comprised so that it may become a liquid-contact part.
[0013]
Therefore, application of the voltage, because applied against liquid contact portion which is spared from the effects of the test inhibitory for insulation by the gas, applied voltage enables inspection by proper low voltage, well above the breakdown voltage Conduct safe and reliable inspection at low voltage range.
[0014]
If a pinhole or seal failure is detected in either of the required inspection parts 41 and 42 by the inspection by the voltage application method, an alarm is generated by the determination process of the control circuit 31 based on the amount of flash current generated at the relevant location. In addition, a signal for rejecting defective products in a subsequent process is transmitted, and a series of inspections are completed, and the subject is discharged to the belt conveyor 60.
[0015]
Next, when the effect of the second embodiment will be described the operation and the machine structure, as shown in FIG. 6, the sample 40 is located on the conveyor belt 10 of the inspection device 20, moreover the subject with pressing roller 5 While applying a pressure contact load to the outer peripheral portion of the body, a voltage is applied to both inspection portions 41 and 42 as shown in FIG.
[0016]
In this case, the volume of the gas a in the fuselage has an effect of reducing the volume by leaking part of the gas from the pinhole portion when there is a pinhole due to the pressure contact load of the rotary presser roller 5, and the absence of the pinhole. Even when the outer periphery of the subject is deformed, the volume is compressed and reduced. Even when the gas volume is large, the gas a is smaller than the appropriate state as shown in FIG. It will be possible to inspect while holding.
[0017]
【The invention's effect】
As described above, according to the first aspect of the invention, lifting only fixed angle at one end of the object during inspection, treasure and the uneven distribution processing as separate the interior of the gas from the inspection point, the inspection point is always can the wetted state, Ru can be reliably inspected pinhole of the subject by a relatively low voltage voltage application.
[0018]
Further, according to the second aspect of the invention, the pressing means in the inspection condition to press the body portion of the subject treasure, if there is a pinhole or seal failure, because the gas leaks out from the defective portion, or pin hole even when there is no or poor sealing, the container is compressed and deformed by moderate load, the gas may be allowed to volume reduction, it is possible to reliably seal failure check regardless of the variations in the volume of some gases.
[Brief description of the drawings]
FIG. 1 is a plan view showing a subject and a portion requiring examination according to a first embodiment of the present invention.
FIG. 2 is a front view of the subject in the same manner.
[Figure 3] Similarly, an explanatory view showing the positional relationship between the two main inspecting unit A, B and the gas of the subject in the inspection apparatus section.
FIG. 4 is a plan view similarly showing each positional relationship of the inspection apparatus unit.
[5] Also, a side view of the inspection apparatus section.
FIG. 6 is a side view of an inspection apparatus unit according to a second embodiment of the present invention.
[Explanation of symbols]
1 Electrode 1
2 Electrode 2
Reference Signs List 3 abutment 4 fulcrum 5 presser roller 6 presser force adjuster 7 electric motor 8 bearing 9 lever 10 conveyor belt 20 inspection device 31 control circuit 32 power supply 33 connection circuit 34 connection circuit 40 subject 41 required inspection part A
42 Inspection B required
50 and 60 belt conveyors

Claims (2)

Leakage current when high voltages of different polarity are applied to different locations on the outer surface of the specimen, which is formed by sealing a conductive solution containing an insulating gas inside and enclosing it in an insulating resin container having a substantially bottle shape. in the pinhole inspection apparatus described above so as to inspect poor sealing such as pinholes occurring in the subject by examining the respective contact or proximity the to the inlet portion of the bottom and the outlet of the previous SL solution of the subject The plurality of electrodes having different polarities arranged in the above-mentioned manner, and the gas sealed inside with the subject inclined at a predetermined angle with respect to the horizontal direction are moved to the shoulder position of the subject, the bottom and inner surface of the solution and fully tilting means Ru is a wetted state with said inlet portion, a power source for applying a high voltage of opposite polarity between said plurality electrodes, the value of the leakage current flowing between the respective electrodes fill front and bottom of the specimen container by examining the Pinhole inspection apparatus, wherein the parts and the resulting poor sealing equipped with a pinhole detection means for detecting in a single test. When detecting a sealing failure between the bottom portion and the inlet portion of the subject container by moving the gas sealed inside by tilting the subject at a predetermined angle with respect to the horizontal direction to the shoulder position of the subject , 2. The pinhole inspection machine according to claim 1, further comprising pressing means for pressing the body portion of the subject inward.

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