JP2000009578A - Method and equipment for inspecting trace liquid leakage of container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a method and an equipment for inspecting trace liquid leakage of a container due to defective welding of the container, defective cap or pinhole without stopping the container during a series of container carrying processes. SOLUTION: In the method for inspecting trace liquid leakage of a container having a micro leak point by applying a pressure to the container under carriage, the container and carrying members 6, 13 thereof are guided to move between guide members 12, 20 and a pressing force is applied to the moving container by applying a pressure to the guide members 12, 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for inspecting a container for microscopic liquid leakage. The present invention relates to a method and an apparatus for inspecting a minute liquid leak caused by a pinhole or the like.

[0002]

2. Description of the Related Art Conventionally, very small liquid leakage caused by very minute defective welding, defective cap, pinhole, etc.
Because it is hard to detect by visual inspection, it is difficult to detect in the manufacturing, filling, sterilization, cooling, transport, boxing, and visual inspection processes of containers. Instead, once store the container in a storage box such as cardboard and turn it upside down so that the cap is down,
It was left in a warehouse or the like for about three days to one week, the storage box was opened before shipment, the container was checked for liquid leakage, and the container was repackaged before shipping.

[0003]

Therefore, a lot of labor and time are required from the filling of the container to the shipment, and the inspection has not been substantially carried out. Fine particles, microorganisms, bacteria, and the like can invade even from a small leaking portion, and as a result, there is a fear that the product may be spoiled and a serious social problem may occur.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention has a pressurizing step of pressurizing a container being conveyed without stopping a conveying member for conveying the container to cause a micro liquid leak in a container having a micro liquid leakage point. A method for inspecting a container for minute liquid leakage,
A container having a pressurizing step of guiding a container and a conveying member of the container so as to move between the guide members, and applying a pressing force to the container moving between the guide members by pressing the guide member. It is an object of the present invention to provide a liquid leakage inspection method. According to the configuration of the present invention, the container and the transporting member that transports the container have a configuration in which the container is pressed by the guide member while moving between the guide members, so that the container is transported by the transporting member. While being carried out, it will be pressurized in a series of movements while transporting the container,
There is no stop for pressurization, pressurizing continuously and efficiently,
It is possible to cause a small liquid leak from a container having a defect such as a minute welding defect, a defective cap, or a pinhole.

In this case, it is the container and its transporting member that move in the transporting direction, whereas the guide member as the pressing means does not move in the transporting direction and is fixedly installed in a stationary state. Therefore, unlike the configuration in which the container is statically pressurized while moving the pressurizing means together with the container, the structure is simple and not only has the effect of facilitating design and manufacture, but also has a static installation. The container is dynamically pressurized while moving with respect to the guide member as the pressurizing means, which has an effect of enabling easy dynamic pressurization accompanied by pulsation and vibration.

Further, the present invention provides a method for inspecting a container for microscopic liquid leakage, wherein the step of pressurizing the container during transportation comprises the step of pulsatingly pressurizing the container. Things. According to the configuration of the present invention described above, the container is pulsatively pressurized in a series of movements during the conveyance of the container while being conveyed, so that pressurization with strong pulsation of the contents in the container is repeated. By being
Partially strong pressurization is continuously repeated, so that fine liquid leakage can be efficiently caused from a defective portion such as a fine welding defect, a cap defect, and a pinhole of the container.

[0007] The present invention also provides a method for inspecting a container for minute liquid leakage, which comprises a step of pulsatingly pressurizing the container by providing irregularities on the guide member. According to the configuration of the present invention described above, the container is pulsatively pressurized in accordance with the unevenness of the guide member in the movement during the conveyance of the container while being conveyed. The container can be easily pulsated by a simple pressurizing means having a uniform pressing force without using a pressurizing device or the like for pressing.

According to the present invention, in the above-described inspection method, the step of pressurizing the container being transported includes transporting the container by sandwiching the container between two belts that move in synchronization with each other. Or a step of pressurizing a container being conveyed by guiding a rotating member such as a cylindrical shape with a guide member composed of a guide roller having irregularities, and pressing each guide roller substantially uniformly with a pressing member. The present invention provides a method for inspecting a container for minute liquid leakage characterized by the following. According to the configuration of the present invention, by transporting the container between the two belts that move in synchronization, the container can be reliably transported while being sandwiched between the guide members, and the transport member By rotating the belt individually and guiding the adjacent rotating parts such as spheres or cylinders, which guide smoothly, by guide rollers forming irregularities, the container responds to the irregularities and the pulsation is weak in the concave part and strong in the concave part. A pressurized state is obtained in which pressure is applied and liquid leakage from pinholes and the like is effectively promoted, and individual guide rollers are almost uniformly pressed by a pressing member, so that individual containers are conveyed. There is an effect that the individual containers passing through this pressurizing step can be sequentially pressurized under the same pressurizing condition without being affected by the interval.

Further, according to the present invention, in the above-mentioned inspection method, the guide members are individually movably pressed against the conveying member, and the individual guide members are pressurized by a fluid-filled elastic hollow body that applies a substantially uniform fluid pressure to the surroundings. The present invention provides a method for inspecting a container for microscopic liquid leakage. According to the configuration of the present invention, the guide member is individually movably pressed against the transport member, so that the guide member at the position where the container passes can be strongly pushed and moved in the retreating direction, while the individual The guide member is pressurized by the fluid-filled elastic hollow body that exerts a substantially uniform fluid pressure on the periphery, so that the guide member at the position where the container passes and the guide member at the position where the container is not passing are uniform. Because it will be pressurized, without receiving a particularly large pressure change such that the container is broken by the unevenness of the guide member,
There is an effect that smooth pulsating pressure can be applied to the container.

Further, according to the present invention, in a series of container transporting steps, a step of dewatering the transported container, a step of pressurizing the subsequently transported container, and a step of contacting the subsequently transported container between the electrodes. It is an object of the present invention to provide a method of inspecting a container for a small amount of liquid leakage, the method comprising: According to the configuration of the present invention, in a series of container transporting steps, by removing water from the container being transported, ensuring insulation of the outer peripheral surface of the container, and then pressurizing the container being transported, To detect the loss of insulation due to micro-liquid leakage by causing micro-liquid leakage from very fine welding defects, defective caps, pinholes, etc., and then bringing the container being transported into contact between the electrodes. In the course of a series of movements during the transport of the container, it is possible to inspect for a small liquid leak from the container, which is hardly detectable just by looking at it.

Further, the present invention, in the above-described inspection method, includes a step of removing water from the conveyed container as a preceding step to the step of pressurizing the conveyed container, and a step of removing the conveyed container as a subsequent step. A step of contacting the container between the electrodes. According to the configuration of the present invention described above, for example, by including a step of removing the water of the container being transported as a preceding step of pulsatingly pressurizing the container being transported, the container can be pressurized to cause slight liquid leakage. When sorting a container that has occurred and a container that has not occurred, by contacting the container being transported between the electrodes as a subsequent step, the degree of insulation loss is clearly detected, and it is possible to sort reliably. There is an effect that can be done. In addition,
In this case, it is needless to say that the material of the container is preferably as large as possible, such as plastic, and the content is preferably as large as possible.

Further, according to the present invention, in the above inspection method, one of the electrodes in the step of bringing the container being transported into contact between the electrodes is connected to the transport member side of the container as an earth side electrode, and the other electrode is transported. The present invention is intended to provide a method for inspecting a container for minute liquid leakage, which is provided at a position where it can be brought into contact with the container in the air. According to the above configuration, in the case where a small liquid leak occurs in the container in the pressurizing step, in the step of contacting the container being transported between the electrodes,
Immediately after the other electrode comes into contact with the wet part of the outer peripheral surface of the container, electricity is supplied to the earth electrode on the transport side of the container and the insulation property is lost at once. At the same time, since the transport member is an earth-side electrode, it is safe without leakage to the operator and the entire device.

Further, according to the present invention, in the above-mentioned inspection method, in the step of contacting the container being transported between the electrodes, the electrode is a high-pressure electrode that does not destroy the container. It provides a method. According to the configuration of the present invention described above, the electrode in the step of bringing the container being transported into contact between the electrodes is a high-voltage electrode that does not destroy the container, so that the microfluidic liquid in the container can be safely removed without destroying the container. It is possible to detect a leak and to detect the deterioration of the insulating property with high accuracy and sensitivity even for a small leak.

Further, in the present invention, in the step of pressurizing the container being conveyed, a guide member for guiding the container being conveyed and the conveying member of the container is provided, and at least one of the guide members is provided. It is an object of the present invention to provide an apparatus for inspecting a container for small liquid leakage by pressurizing a member and pressurizing a container being conveyed. According to the configuration of the present invention, the container and the transport member that transports the container are pressed by the guide member while moving while being sandwiched between the guide members,
The individual containers are pressurized in a series of movements during the conveyance of the containers while being conveyed by the conveying member, and there is no stop for pressurization, and the pressure is continuously and efficiently applied to achieve fine welding. There is an effect that a minute liquid leak can be caused from a container having a defect such as a defect, a cap defect, and a pinhole.

[0015] In this case, the guide member can be fixedly installed in a stationary state without moving with respect to the container moving in the conveying direction and the conveying member thereof. Unlike the configuration in which the container is statically pressurized, the structure is simple and not only has the effect of facilitating design and manufacture, but also the container moves dynamically with respect to the statically installed guide member. There is an effect that it is possible to easily perform dynamic pressurization with pulsation and vibration of the container contents when pressurized.

Further, the present invention provides a container micro-leakage inspection apparatus in which the container being transported is pulsatedly pressurized via a guide member in the above-described inspection apparatus. According to the configuration of the present invention described above, the container is pulsatively pressurized in a series of movements during the conveyance of the container while being conveyed, so that pressurization with strong pulsation of the contents in the container is repeated. By virtue of this, strong pressurization is continuously repeated in part, and it is possible to efficiently cause a small liquid leak from a defective portion such as a fine welding defect of a container, a defective cap, and a pinhole. .

Further, according to the present invention, in the above-described inspection apparatus, the container being conveyed is pulsatedly pressurized by providing irregularities on one or other of the guide members. It is an object of the present invention to provide an apparatus for inspecting a container for a small amount of liquid leakage. According to the configuration of the present invention described above, the container is pulsatedly pressurized in accordance with the unevenness of the guide member while being conveyed. Therefore, a pressurizing device or the like that pulsatically presses the guide member is used. For example, the container can be easily and pulsatively pressurized by a simple pressurizing means having a uniform pressing force.

Further, according to the present invention, in the above-described inspection apparatus, the guide member is formed with concavities and convexities by rotating parts having a spherical shape, an elliptical shape, a parabolic shape, a hyperbolic shape, a cylindrical shape, or the like. An object of the present invention is to provide a device for inspecting a micro leak of a container characterized by pulsating pressurization.
According to the configuration of the present invention, the guide member for pulsatingly pressurizing the container is spherical, elliptical, parabolic, hyperbolic, cylindrical or a combination of the rotating parts having a shape such as a combination thereof. Therefore, as the guide member, the material such as the material, flexibility, strength, etc. of the container, or the material, thickness, flexibility, tension, bendability, deformability, strength, etc. of the transport member formed of a belt, etc. By adopting a rotating part having a shape, it is possible to optimally pressurize the container from a sharp large pulsation to a pulsation such as a slight undulation almost uniform or a light vibration.

Further, according to the present invention, in the above-described inspection apparatus, the container is conveyed by being sandwiched between two belts which move synchronously, and the belt as a conveying member is guided by a guide member comprising a guide roller. It is an object of the present invention to provide a container micro-leakage inspection apparatus characterized in that a container being conveyed is pressurized by pressing a roller with a pressing member. According to the configuration of the present invention, by transporting the container between the two belts that move in synchronization, the container can be reliably transported while being sandwiched between the guide members, and the transport member By guiding the belt with guide rollers having adjacent rotating parts with irregularities, the container is strongly pulsated at the convex parts and weakly pulsating at the concave parts corresponding to the irregularities,
There is an effect that a pressurized state that effectively promotes liquid leakage from a pinhole or the like is obtained.

Further, the present invention provides the above inspection apparatus,
The container is transported by being sandwiched between two belts that move synchronously,
The container as described above, wherein a belt as these conveying members is guided by a guide member comprising the guide roller, and the guide roller for guiding the one belt is pressed by a pressing member to pressurize the container being conveyed. An object of the present invention is to provide an apparatus for inspecting a minute liquid leak. According to the configuration of the present invention described above, the container being conveyed can be pressurized by pressing the guide roller that guides one of the belts with the pressing member, so that the pressurizing structure can be simply designed and manufactured. Can be.

Further, according to the present invention, in the above-described inspection apparatus, the container being conveyed is pressurized by pressurizing each guide roller for guiding the one belt substantially uniformly with a pressurizing member. The present invention provides an apparatus for inspecting a container for microscopic liquid leakage. According to the configuration of the present invention, since the guide roller that guides one of the belts is configured to press the container being conveyed by pressing each of the guide rollers substantially uniformly with a pressing member, the individual guide rollers are By being pressed almost evenly by the pressing member,
The individual containers passing through this pressurizing step are successively pressurized under substantially the same pressurizing conditions almost without being influenced by the transport interval and the number of the individual containers. There is an effect that a pressure condition can be given.

Further, according to the present invention, in the above-described inspection apparatus, the pressing member for pressing the guide member to press the container being conveyed is almost uniformly pressed against the guide member for guiding the conveying member for conveying the container. An object of the present invention is to provide a device for inspecting a micro leak of a container, comprising a fluid pressure member.
According to the configuration of the present invention, since the pressurizing member that presses the guide member is formed of the fluid pressure member, for example, each of the operating members projecting from the same cylinder with the fluid pressure from the common fluid pressure tank is used for each individual member. By employing specific means such as pressing the guide member almost uniformly, there is an effect that a structure in which the guide member is pressed almost uniformly by the pressing member can be easily obtained. In the case of, by applying an elastic member such as a coil spring, a leaf spring, rubber, a synthetic resin, or a hollow body between the operating member and the guide member, it is possible to obtain an elastic pressing force, When the working fluid is a gas such as compressed air,
In addition to the elastic member, there is an effect that a pressure with appropriate elasticity can be obtained by adjusting the gas pressure.

Further, according to the present invention, in the above-described inspection apparatus, the guide members are individually movably pressed against the conveying member, and the individual guide members are pressurized by a fluid-filled elastic hollow body that applies a substantially uniform fluid pressure to the surroundings. It is an object of the present invention to provide an apparatus for inspecting a micro leak of a container. According to the configuration of the present invention, since the guide members that are individually movably pressed against the conveying member are pressurized by the fluid-filled elastic hollow body that applies substantially uniform fluid pressure to the surroundings, the individual guide members are substantially uniform. Pressing force is applied to the conveying member,
The containers moving together with the conveying member are evenly pressed by the individual guide members, which has the effect of enabling each container to undergo the same inspection, and the individual guide members are formed by a fluid-filled elastic hollow body. There is an effect that a structure for simply and easily applying uniform pressure can be obtained.

Further, according to the present invention, in the above-described inspection apparatus, the guide member comprises a guide roller having both ends rotatably supported by bearing members connected adjacently in a bendable manner in a chain shape. Are individually pressurized and supported by the elastic hollow bodies that apply substantially the same fluid pressure to the surroundings thereof. According to the configuration of the present invention, since the bearing members of the adjacent guide rollers are connected in a bendable manner in a chain shape, the bearing members move around the guide roller through which the container passes, including the front and rear portions thereof, so as to gently bend in the evacuation direction. And the bearing members are individually pressurized and supported by the elastic hollow bodies with substantially the same pressing force, so that the container moving with the conveying member can be pressed with substantially uniform and smooth pulsation. There is. Further, the bearing member connected in a chain shape can be attached to the body by pulling both ends thereof, and can be stretched on the elastic hollow body so as to be straight in the transport direction of the transport member. Both ends of the guide roller can be bearing-supported along the transport direction of the transport member by the two tubular hollow elastic members that support the pressure-type bearing members and pressurize them.

Further, according to the present invention, in the above-described inspection apparatus, as a fluid pressure member that pressurizes the individual guide members substantially uniformly, the individual guide members are substantially disposed between the individual guide members and the apparatus body along the transport direction of the container. An object of the present invention is to provide an apparatus for inspecting a micro leak of a container, wherein an elastic hollow body having the same fluid pressure is laid. According to the present invention having the above-described configuration, an elastic hollow body having substantially the same fluid pressure is laid between the individual guide members and the apparatus body along the transport direction of the container. There is an effect that a fluid pressure member that presses the individual guide members almost uniformly can be provided.

Further, the present invention provides the inspection apparatus in the above-mentioned pressurizing step, wherein a water removing device for removing water from the outer peripheral surface of the container being conveyed is provided at a preceding stage thereof. A leak inspection device is provided. According to the present invention having the above-described structure, the water removal device for removing water from the outer peripheral surface of the container being conveyed is provided at a stage prior to the pressurizing step, so that the outer peripheral surface of the container is pressurized to cause a small liquid leakage. When you let
This has the effect of clarifying whether or not the defect is caused by a defect such as a pinhole.

Further, the present invention provides an inspection apparatus in the above-mentioned pressurizing step, wherein an insulation inspection apparatus for contacting the container being conveyed between the electrodes is provided at a subsequent stage. An apparatus is provided. According to the present invention having the above-described configuration, by providing an insulation test device for bringing the container being transported into contact between the electrodes at a stage after the pressurizing process, by detecting the loss of insulation between the electrodes, There is an effect that it is possible to easily find a small liquid leak of the container generated in the pressurizing step.

Further, the present invention provides the above inspection apparatus,
A position where one of the electrodes in the insulation test device that connects the container being transported between the electrodes is connected to the transport member side of the container as an earth side electrode, and the other electrode can contact a part of the container being transported in the air. The present invention provides an apparatus for inspecting a container for a small amount of liquid leakage, the inspection apparatus being provided in a container. According to the apparatus of the present invention having the above-described configuration, in the case where a small liquid leak occurs in the container due to the pressurization, in the insulation inspection device that brings the container being transported into contact with the electrode, the container outer peripheral surface may be wetted. Immediately after the other electrode comes in contact with the earth side electrode on the transport side of the container, the insulation is lost, so that it is possible to find a small liquid leak in the container, and the transport member is connected to the earth side electrode. Therefore, there is no leakage to the operator and the entire device, and the device is safe.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. First, an outline of a method and an apparatus for inspecting a container for small liquid leakage according to the present invention shown in FIG. 1 will be described. Reference numeral 1 denotes a series of container transport steps including a transport member such as a belt conveyor or a chain conveyor for transporting containers 2. In the container transporting step 1, a water removing device 3 for removing water such as water droplets attached to the outer peripheral surface of the container being transported, which is sequentially arranged at appropriate intervals, and pressurizing the container being transported. And a step of contacting the container being transported between the electrodes and instantaneously detecting the container that has leaked the minute liquid. There is provided an insulation testing device 5 for performing.

As will be described in detail later, for example, the water removing device 3 is provided on the outer periphery of the container 2 in a series of steps such as heating and filling of the content into the container 2 at the preceding stage, welding, sealing, cooling, heat sterilization, and cooling. The attached water droplets are blown off with compressed air or the like to remove water. In the subsequent pressurizing step in which the container 2 is pressurized to cause a small liquid leakage in a container having a small liquid leakage point, liquid leakage occurs. This is for surely distinguishing a container from a container that has not occurred, and the insulation test device 5
When a container pressurized in the pressurizing step is passed between the electrodes and a short circuit occurs between the electrodes due to a container that has leaked, the deterioration of the insulation property is instantaneously detected and the separation is attempted.

Therefore, containers suitable for the insulation testing device 5 in this embodiment are bags, cups, bottles, etc., and the package itself has insulation and the contents are conductive. However, the water removal device 3 and the micro-leakage inspection device 4 which performs a pressurizing step of pressurizing the container being transported to cause micro-leakage in the container having the micro-leakage point
Does not particularly require insulation of the container and conductivity of the contents. Here, with reference to FIGS. 2 to 4, a description will be given of the fine liquid leakage inspection device 4 which performs a pressurizing step of pressurizing the container 2 being conveyed to cause a fine liquid leakage in the container having the fine liquid leakage point. .

In FIG. 2, reference numeral 6 denotes a lower conveying member comprising a belt conveyor or the like wound endlessly around belt pulleys 8 and 9 on a machine base 7. The belt pulley 9 is configured to be driven to rotate clockwise in the drawing by a drive motor 10 provided as a drive pulley below the machine base 7 via a transmission member 11 formed of a chain, a timing belt, or the like. The lower conveying member 6 has a width on which the container 2 is placed,
In the figure, it moves from left to right. Below the transport member 6, a guide member 12 composed of a large number of individually rotatable cylindrical guide rollers is provided on the machine base 7, and the relatively thin and flexible transport member 6 is provided. On its lower surface, a number of adjacent guide rollers are continuously supported by a guide member 12 having irregularities.

In FIG. 2, 13 is an elevator 14
And a belt conveyor or the like wound around the belt pulleys 15, 16 and 17 in an endless ring. The belt pulley 15 is synchronized with the drive pulley 9 of the lower transport member 6 in a counterclockwise direction in the drawing by a drive motor 18 provided as an upper portion of the elevator stand 14 as a drive pulley via a transmission member 19 formed of a chain or a timing belt. It is configured to be driven to rotate. The upper transport member 13 has a width that moves while nipping the container 2 with the lower transport member 6, and moves from left to right in the figure. Transport member 1
On the upper side of 3, a guide member 20 composed of a number of individually rotatable cylindrical guide rollers is provided below the elevator platform 14, and the transport member 13, which is relatively thin and flexible, is On its upper surface, a number of adjacent guide rollers are continuously supported by a guide member 20 having irregularities.

The lower conveying member 6 is provided with a tension adjusting mechanism 21 on the belt pulley 8, and the upper conveying member 13 is provided with a tension adjusting mechanism 22 on the belt pulley 17.
Is provided. Reference numeral 23 denotes a belt pulley of a lower transport member provided adjacently and similarly on the same machine base 7, and reference numeral 24 denotes a belt pulley of an upper transport member similarly provided on an adjacent elevator table 25, depending on the type of container to be transported. It is configured so that it can be installed in a corresponding manner. Also, machine 7
As shown in FIG. 4, is supported by a fixed foot 26 and a caster 27, both of which can be adjusted in height, so that the upper surface is substantially horizontal.

As shown in FIGS. 4 and 5, the guide member 12 composed of a guide roller for supporting the lower conveying member 6 on the lower surface thereof supports the support shafts 28 at both ends of each guide roller.
Each is attached to a bearing member 30 which is connected to each other in a chain shape in the longitudinal direction (transport direction) so as to be bendable. In the case of the illustrated embodiment, the bearing member 30 is provided with the front bearing piece 3.
The bearing piece 32 on the rear side is composed of a plate-like chain piece of the same shape consisting of a horizontally long base portion and a central protruding portion, and the front side is in two rows with a thick shaft-shaped rotatable spacer 33 interposed therebetween. 31, the back side faces each other on the back side 32, and has a configuration in which both ends of a horizontally long base portion are flexibly connected by a connection shaft 34, and the support shaft 28 of the guide member 12 is connected to the support member 28 via a spacer 33. The bearings are supported by the central projections of the two bearing pieces 31, 32 facing each other on the front side 31 and the back side 32.

As shown in FIG. 4, a pair of bearing members 30 which hold both ends of the guide member 12 composed of guide rollers and are connected to each other in a bendable manner in a chain form, respectively, as shown in FIG. The two bearing pieces 31 and 32 are stably installed on the tubular elastic hollow body 40 laid on the machine base 7 via the arc-shaped flexible laying member 35 so as to straddle the upper part of the arc-shaped portion. I have. The hollow elastic body 40 itself
It is made of a linear tubular bag having appropriate elasticity and tension such as rubber and synthetic resin. Fluid is supplied to the inside of the elastic hollow body 40 from a fluid pressure pump in a freely adjustable manner, and an appropriate fluid pressure is applied to the elastic hollow body 40.
The bearing members 30 connected to each other so as to be bendable are configured to apply substantially equal fluid pressure to the individual bearing pieces 31 and 32. As a general tendency, the elastic hollow body 40 strongly applies elastic force to the individual guide members 12 via the bearing members 30 when the fluid is a liquid and flexibly when the fluid is a gas.

In the case of the embodiment, the bearing member 30 and the elastic hollow body 40 are held in a case-shaped holding frame 37 fixed on the machine base 7 by an L-shaped fixing member 36. A sheet member 39 having appropriate elasticity is laid below the elastic hollow body 40 and the holding frame 3
An opening 38 is provided at an upper portion of the portion 7 where the bearing member 30 holds the shaft portions 28 at both ends of the guide member 12. In addition,
It is of course possible to fix both ends of the bearing member 30 to the body via an elastic pulling member or the like so as to maintain the linearity on the elastic hollow body 40.

Next, the elevator table 14 provided with the upper conveying member 13 and the guide member 20 occupying above the upper conveying member 13 is moved up and down with respect to the machine base 7 by an elevating mechanism comprising an expansion and contraction operation of a fluid pressure cylinder 29 and the like. It is configured to be able to. In the case of the embodiment, the fluid pressure cylinder 29 is provided near the four corners thereof so that the machine base 7 and the elevator stand 14 are vertically opposed to each other, and supports the support girder frame 41 constituting the elevator stand 14. . The support girder frame 41 is provided with two rows of support beam frames 42 fixed above the two rows of the bearing members 30, respectively.
On the lower side, a bearing frame 44 having a U-shaped cross section is integrally fixed by a fixing member via a mounting frame portion 43. With this bearing frame 44, the support shafts 45 at both ends of the guide member 20 formed of the guide roller opposed to the guide member 12 formed of the guide roller provided on the machine base 7 are fixedly supported by the lift machine base 14. ing. In FIG. 3, the upper side of the belt conveyor, which is the upper conveying member 13, can be seen from between the support beam frames 42. Reference numeral 46 denotes a container feed guide roller after the completion of the pressing step.

In the structure of the above embodiment, the drive motors 10 and 18 are driven to rotate the lower transport member 6 and the upper transport member 13 in synchronization, and the container is moved in FIG. 13 and moves from left to right. At this time, since the transport members 6 and 13 are guided by the guide members 12 and 20 formed of a number of rotatable guide rollers behind the transport members, the container being transported includes the upper and lower guide rollers 20 and the guide rollers 12. Although a pressing force corresponding to the gap is received, the upper guide member 20 is
The lower guide member 12 is supported by the elastic hollow body 40 via the bearing member 30 while the elevator table is not moved up and down so that the elevator table is not moved vertically.
Since it is placed on the upper side, the individual guide members 12 that are going to sink downward during passage of the container receive a substantially constant elastic pressure from the elastic hollow body 40 at the individual guide members regardless of their positions. Pressurized. Therefore, 1
Both when individual containers pass and when multiple containers pass, the individual containers can be pressurized with substantially the same pressing force.

In this case, since the guide members 12 and 20 formed of vertically rotatable guide rollers are vertically uneven, the guide members 12 and 20 are sandwiched between the transport members 6 and 13 and pass between the guide members 12 and 20. The container receives a pulsating pressing force due to the unevenness, and when there is a minute liquid leakage portion such as a pinhole in the container, the pulsating pressurization can more reliably cause the liquid leakage.
The unevenness of the guide roller is spherical, elliptical,
An appropriate shape such as a parabolic shape, a hyperbolic shape or a combination thereof can be adopted, and depending on the size and the arrangement of the upper and lower irregularities, for example, the upper and lower irregularities are coincident, slightly shifted, or mutually shifted. A change in the pulsation pressurizing action can be imparted by changing the arrangement such that irregularities are included in the pulsation.

Further, conveying members 6 and 1 such as a belt conveyor
It is also possible to variably adjust the pressing force of the guide members 12 and 20 by the thickness of 3, the elasticity in the thickness direction, the stretching force, the hardness or the moving speed. The pressure can be adjusted by adjusting the fluid pressure of the elastic hollow member 40, and of course, by adjusting the interval between the guide members 12 and 20 by the fluid pressure cylinder 29, which is the elevating mechanism of the elevator platform 14, Needless to say, the pressing force can be greatly changed. In the above embodiment, it is assumed that the weight of the elevator base 14 is much larger than the load to be applied to the container to be subjected to the pressure test.
Is much lighter, the hydraulic cylinder 29 acts as a pressurizing and holding member to support the elevator platform 14 so that it does not float when passing through the container.
Is an air cylinder or the like, it is possible to give the lift base 14 elasticity like an air damper.

Then, the micro-leakage inspection device 4 which performs the pressurizing step of pressurizing the conveyed container 2 having the above-described configuration to cause the micro-leakage in the container having the micro-leakage point,
Along with the transporting step, it is also possible to provide a configuration in which two or three stages are continuously installed as necessary, and a container in which a liquid leak has occurred can be extracted at an intermediate portion. In addition, as containers to be inspected, bags, cups, bottles, tubes, and the like that can pressurize the contents from the outside are suitable, such as plugs and caps attached to these containers, heat-welded portions, and the like. It is suitable for inspection of a portion where leakage of micro liquid may occur, such as a sealed portion after filling the contents.

Next, based on the embodiment shown in FIGS. 6 and 7, liquid leakage occurred in the inspection device for applying pressure to the container 2 to cause the container having the small liquid leakage portion to cause the small liquid leakage. A description will be given of an insulation inspection apparatus for quickly and reliably distinguishing a container from a container that has not occurred. The insulation test apparatus 5 is intended to detect the deterioration of the insulation property and instantaneously detect and separate the insulation when the container pressurized in the pressurizing step is shorted between the electrodes due to the leaking container. It is. Therefore, a container suitable for the insulation test apparatus 5 in this embodiment is preferably a bag, a cup, a bottle, or the like, in which the package itself is insulative and the contents are conductive. Of course, even if the container has a certain degree of conductivity, the present invention can be applied as long as a small amount of liquid leaks causes a detectable change in insulation.

In the figure, reference numeral 47 denotes a conveyer for carrying in the container after the pressurizing step, 48 denotes an inspection conveyor, and 49 denotes a sorting conveyor. In the case of the embodiment, the inspection conveyor 48 is provided divided at the center, and the high voltage electrode 50,
51 are provided opposite each other at appropriate intervals. Inspection belt 4
The electrode 51 on the eighth side protrudes at substantially the same height as the surface of the belt and is provided at a position where it can come into contact with the bottom surface of the conveyed container, while the other electrode 50 is located above the inspection belt 48. It is provided so as to be in contact with an appropriate position that is located in the hollow and easily leaks from the container or easily wets when the leak occurs.

In the case of the embodiment, as shown in FIG. 7, the electrode 50 is provided to have a width substantially covering the upper part of the inspection belt 48.
The electrode 51 on the side of the inspection belt 48 is also set to have a width to contact the container as much as possible. As shown in FIG. 6, the electrode 50 has a mounting base 52 that can be replaced with a device power supply unit 54 by a detachable tool 53 so that the electrode 50 can be replaced depending on the type of container. Also, the electrode 51 on the inspection belt 48 side
Is connected to the inspection belt 48, which is a transport member of the container, as an earth-side electrode, so that as soon as the upper electrode 50 comes into contact with the wet portion of the outer peripheral surface of the container, the ground-side electrode on the transport side of the container is connected. When the power is turned on and the insulation property is lost at once, it is possible to reliably detect a minute liquid leak from the container, and because the transport member is grounded as the earth side electrode, the operator and the entire device may leak. It is safe without anything.

The front cover body 55 and the side cover body 56 covering the periphery of the inspection belt 48 are made of a transparent plate so that the transport path can be observed. The front cover body 55 is taken out when the liquid leaking container is damaged due to energization. As far as possible, the handle 57 can be opened to the front with the lower end edge 58 as a center. In addition, 58 is the body 60
An operation panel provided at an upper portion of the operation member 59 so that the angle can be adjusted by an operation member 59.
Various control operations including electrode gap adjustment, belt speed adjustment, meter indicating insulation resistance value, recording, indication of detection signal, and the like can be performed.

According to the insulation test apparatus of the above embodiment, when the container after the pressurizing step is fed into the apparatus via the carry-in conveyor 47, the high-voltage electrodes 50 and 51 are placed on the test conveyor 48. When the container in which the micro-liquid leakage has occurred comes into contact and passes, the electrodes 50 and 51 are energized by the leaked liquid to lose insulation, and a detection signal is generated. The container in which the liquid leak has occurred can be selected. At this time, it is of course possible to automatically stop the conveyors 47, 48, and 49 of the apparatus at the same time as issuing the detection signal so that the operator can remove the container.

Next, with reference to FIGS. 8 to 10, a description will be given of the water removal device 3 for removing water from the outer peripheral surface of the container being conveyed before the inspection device in the pressurizing step.
Is to blow off water droplets and the like adhering to the outer periphery of the container in a series of processing steps such as heating filling, welding, sealing, shower cooling, heat sterilization, shower cooling and the like into the container 2 in the preceding stage with compressed air or the like. In the pressurizing step in which the container 2 is pressurized to cause micro-leakage in the subsequent container having the micro-leakage location, the container 2 in which the liquid has leaked and the container in which the liquid has not leaked can be surely distinguished. To do.
That is, instead of completely drying the container, only by removing water, the surface of the container can be sufficiently dried in the subsequent transport step.

The water removing device 3 includes a transport member 61 having a large gap for transporting containers. In the case of the embodiment, the transport member 61 is wound around the belt pulleys 62 and 63 in an endless annular shape, and one of the drive pulleys 62 is driven to rotate in the transport direction by the drive motor 65 via the transmission belt 64. It is composed. Air discharge nozzles 66 and 67 are provided on the upper and lower sides of the conveyor belt 61 so as to oppose each other in the transverse direction at appropriate intervals.
A lifting prevention guide 68 is provided adjacent to 6, and both of them are configured to be vertically movable by rotating a lifting / lowering operation handle 69, and the height of the space between the container surface and the discharge port is appropriately adjusted. It is configured to be able to. The lower air discharge nozzle 67 can be set in advance at an optimum distance to the bottom of the container, but it is of course possible to configure the height to be adjustable. The discharge angle of the discharge port can be appropriately adjusted. Reference numeral 70 denotes an operation panel for adjusting the speed of the conveyor belt 61, the discharge amount of the air discharge nozzles 66 and 67, and the like, which is appropriately adjusted according to the size, form, transfer posture, transfer amount, degree of water removal, etc. of the water removal object. It is configured to be able to do.

A blower motor 71 rotationally drives a blower 73 via a V-belt 72 and the like, and supplies compressed air to the air discharge nozzles 66 and 67. The transport member 61 is protected on both sides inside the apparatus by a guide frame 75 so as not to scatter the containers, and a side guide 74 is provided outside the apparatus on both sides of the transport member 61 so that the containers do not fly. . Reference numeral 76 denotes an opening / closing door for maintenance and inspection. 77 is an air adjusting cock.

[0051]

As described above, according to the method for inspecting a container for microscopic liquid leakage according to the present invention, the container being conveyed is pressurized without stopping the conveying member for conveying the container, and the container having the microscopic liquid leaking portion is formed. A method for inspecting a container for micro-liquid leakage having a pressurizing step of causing micro-liquid leakage, while guiding the container and a transport member of the container to move between guide members,
By having a configuration that includes a pressurizing step of applying a pressing force to a container moving between the containers by pressing the guide member, the container and a conveying member that conveys the container are sandwiched between the guide members. Since the container is pressurized by the guide member while moving, the container is pressurized in a series of movements while the container is being conveyed while being conveyed by the conveying member, and there is no stop for pressurization, which is efficient. Pressure is continuously applied to the container, and there is an effect that a small liquid leak can be caused from a container having a defect such as a minute welding defect, a cap defect, a pinhole, and the like. In contrast to the container and its transport member, the guide member as the pressing means in the transport direction can be fixedly installed in a stationary state without moving, so that the pressing means is moved together with the container. Unlike the configuration in which the container is statically pressurized while being pressed, not only is the structure simple and has the effect of facilitating design and manufacture, but also the container is guided against the statically installed guide member as the pressurizing means. Is dynamically pressurized while moving, which has the effect of making it possible to easily perform dynamic pressurization with pulsation and vibration.

Further, according to the present invention, in the above-described inspection method, the step of pressurizing the container being conveyed includes a step of pulsatingly pressurizing the container. Due to the pulsating pressurization in a series of movements during transport of the container, the pressurization with strong and weak pulsation of the contents in the container is repeated, and partially strong pressurization is continuously performed. This is repeated, and there is an effect that a minute liquid leak can be efficiently generated from a defective portion such as a minute welding defect, a cap defect, and a pinhole of the container.

Further, the present invention is characterized in that, in the above-described inspection method, the guide member is provided with irregularities to pressurize the container in a pulsating manner. Because it will be pulsatingly pressed according to the unevenness of the guide member during movement,
There is an effect that the container can be easily pulsated by a simple pressurizing means having a uniform pressing force without using a pressurizing device or the like for pulsatingly pressing the guide member.

Further, according to the present invention, in the above-described inspection method, the step of pressurizing the container being transported includes transporting the container by sandwiching the container between two belts that move in synchronization with each other. Or a step of pressurizing a container being conveyed by guiding a rotating member such as a cylindrical shape with a guide member composed of a guide roller having irregularities, and pressing each guide roller substantially uniformly with a pressing member. By transporting the container between two belts that move synchronously, the container can be reliably transported while being sandwiched between the guide members, and the Adjacent rotating parts such as spheres or cylinders, which rotate the belt individually and smoothly guide them, are guided by guide rollers forming irregularities, so that the containers correspond to the irregularities and are strong at the convex parts and weak at the concave parts. A pressure state is obtained in which pulsation is applied, and a pressure state that effectively promotes liquid leakage from a pinhole or the like is obtained, and individual guide rollers are almost uniformly pressed by a pressing member, so that individual There is an effect that the individual containers passing through this pressurizing step can be sequentially pressurized under the same pressurizing condition without being affected by the transport interval of the containers.

Further, according to the present invention, in the above-mentioned inspection method, the guide members are individually movably pressed against the conveying member, and the individual guide members are pressurized by a fluid-filled elastic hollow body that applies a substantially uniform fluid pressure to the surroundings. Since the guide member is individually movably pressed against the transport member, the guide member at the position where the container passes can be strongly pushed and moved in the retreating direction. On the other hand, since the individual guide members are pressurized by the fluid-filled elastic hollow body that applies a substantially uniform fluid pressure to the surroundings, the guide members at the position where the container passes also the guide members at the position where the container is not passing. Since the member will also receive uniform pressure, without receiving a particularly large pressure change such that the container is destroyed by unevenness due to the guide member,
There is an effect that smooth pulsating pressure can be applied to the container.

Further, according to the method for inspecting a container for minute liquid leakage according to the present invention, in a series of container transporting steps, a step of removing water from the transporting container, and a step of pressurizing the subsequent transporting container; Since the subsequent process of contacting the container between the electrodes during transporting between the electrodes, in a series of container transporting process, by removing water in the transporting container, to ensure insulation of the outer peripheral surface of the container, By the step of pressurizing the container during transportation, very fine welding failure of the container, a defective cap, micro-leakage from pinholes, etc., and the subsequent step of contacting the container during transportation between the electrodes, Loss of insulation due to microfluidic leakage can be detected, and during a series of movements during transport of the container, there is an effect that it is possible to inspect for microfluidic leakage of the container, which is hardly detectable just by looking at it.

Further, the present invention, in the above-mentioned inspection method, comprises a step of removing water from the conveyed container as a preceding step with respect to a step of pressurizing the conveyed container, and a step of removing the conveyed container as a subsequent step. Is provided with a step of bringing the container into contact between the electrodes, and for example, includes a step of removing water from the conveyed container as a preceding step of pulsatingly pressurizing the conveyed container. In this way, the degree of loss of insulation is determined when a container in which micro-liquid leakage has occurred due to pressurization of a container and a container in which micro-leakage has not occurred is selected by contacting the container being transported between the electrodes as a subsequent step. Is clearly detected,
There is an effect that sorting can be performed reliably.

Further, according to the present invention, in the above-described inspection method, one of the electrodes in the step of bringing the container being transported into contact between the electrodes is connected to the transport member side of the container as an earth-side electrode, and the other electrode is transported. Since it has a configuration characterized in that it is provided at a position that can be contacted in the air to a part of the container, if a small liquid leak occurs in the container in the pressurizing step,
In the process of bringing the container being transported into contact between the electrodes, as soon as the other electrode comes into contact with the wet portion of the outer peripheral surface of the container, electricity is supplied to the ground electrode on the transport side of the container and the insulation is lost at once. Thereby, it is possible to find a small liquid leak from the container, and since the transport member is the ground side electrode, there is an effect that the operator and the entire apparatus are safe without leakage.

Further, the present invention is characterized in that, in the above-described inspection method, the electrode in the step of contacting the container being transported between the electrodes is a high-voltage electrode that does not destroy the container. Since the electrode in the step of bringing the container inside into contact between the electrodes is a high-voltage electrode that does not destroy the container, it is possible to safely detect a small liquid leak in the container without destroying the container, There is an effect that the deterioration of the insulating property can be detected with high accuracy and sensitivity even for a very small leak.

Further, according to the apparatus for inspecting a container for minute liquid leakage according to the present invention, in the step of pressurizing the container during transportation,
A guide member is provided for guiding the container being transported and the transport member of the container in between, and at least one of the guide members is pressurized to pressurize the container being transported. Since it has the configuration of the inspection device, the container and the transport member that transports the container are pressed by the guide member while moving while being sandwiched between the guide members,
The individual containers are pressurized in a series of movements during the conveyance of the containers while being conveyed by the conveying member, and there is no stop for pressurization, and the pressure is continuously and efficiently applied to achieve fine welding. There is an effect that a minute liquid leak can be caused from a container having a defect such as a defect, a cap defect, and a pinhole.

In this case, the guide member can be fixedly installed in a stationary state without moving with respect to the container moving in the conveying direction and the conveying member thereof. Unlike the configuration in which the container is statically pressurized, the structure is simple and not only has the effect of facilitating design and manufacture, but also the container moves dynamically with respect to the statically installed guide member. There is an effect that it is possible to easily perform dynamic pressurization with pulsation and vibration of the container contents when pressurized.

Further, in the above-described inspection device, the inspection apparatus has a configuration in which the container being transported is pulsatedly pressurized via the guide member, so that the container is transported while being transported. By being pressurized pulsatingly in the movement of, the pressurization with strong pulsation of the contents in the container is repeated, and partially strong pressurization will be repeated continuously, There is an effect that a minute liquid leak can be efficiently generated from a defective portion such as a minute welding defect, a cap defect, and a pinhole of the container.

Further, the present invention is characterized in that, in the above-described inspection apparatus, the container being conveyed is pulsatedly pressurized by providing the guide member on one side, the other side or both sides with irregularities. By having the configuration, the container is pulsatively pressed in accordance with the irregularities of the guide member while being conveyed, without using a pressurizing device or the like that pulsates the guide member, for example, There is an effect that the container can be easily pulsatedly pressurized by a simple pressurizing means having a uniform pressing force.

Further, according to the present invention, in the above-described inspection apparatus, the guide member is formed with concavities and convexities by rotating parts having a spherical shape, an elliptical shape, a parabolic shape, a hyperbolic shape, a cylindrical shape or the like adjacent to each other. By having a configuration characterized by pulsating pressurization, the guide member for pulsatingly pressurizing the container has a rotating portion having a spherical, elliptical, parabolic, hyperbolic, cylindrical, or a combination thereof. Are adjacent to each other, so that the guide member is made of a material such as a container, a property such as flexibility and strength, or a material, thickness, flexibility, tension, bendability, deformability, and the like of a conveyance member such as a belt. By adopting a rotating part with an appropriate shape depending on the properties such as strength, it is possible to perform optimal pressurization on the container from sharp and large pulsation to pulsation such as slight undulation almost uniform or light vibration. There is a kill effect.

Further, according to the present invention, in the above-described inspection apparatus, the container is conveyed by being sandwiched between two belts which move synchronously, and the belt as a conveying member is guided by a guide member comprising a guide roller. Since the container being transported is pressurized by pressing the roller with a pressing member, the container is reliably sandwiched between two belts that move in synchronization with each other so that the container is reliably transported. The container can be conveyed while being sandwiched between the guide members, and the belt as the conveying member is guided by the guide rollers having the concavo-convex portions formed by the adjacent rotating portions. There is an effect that a pressurized state is obtained in which the pressure is pulsated and the liquid leakage from a pinhole or the like is effectively promoted.

Further, according to the present invention, in the above-described inspection apparatus,
The container is transported by being sandwiched between two belts that move synchronously,
The belt as these transport members is guided by a guide member composed of the guide roller, and the container being transported is pressurized by pressing a guide roller that guides the one belt with a pressurizing member. With this configuration, the container being conveyed can be pressurized by pressing the guide roller that guides one of the belts with the pressing member, so that the pressure structure can be simply designed and manufactured.

Further, according to the present invention, in the above-mentioned inspection apparatus, the containers being conveyed are pressurized by pressurizing the respective guide rollers for guiding the one belt substantially uniformly with a pressurizing member. With this configuration, the individual guide rollers for guiding one of the belts are pressed almost uniformly by a pressing member to press the container being conveyed. The pressure is almost uniformly applied by the pressure member, and the individual containers passing through this pressurizing step are successively applied under substantially the same pressure conditions, regardless of the transport interval and the number of the individual containers. As a result, there is an effect that uniform pressurizing conditions can be applied to individual containers.

Further, according to the present invention, in the above-described inspection apparatus, the pressing member for pressing the guide member to press the container being conveyed is almost uniformly pressed against the guide member for guiding the conveying member for conveying the container. Since the pressure member that presses the guide member is made of a fluid pressure member by having a configuration characterized by being made of a fluid pressure member, for example, it protrudes from the same cylinder by fluid pressure from a common fluid pressure tank. By adopting specific means such as pressing the individual guide members almost uniformly by the individual operating members, there is an effect that it is possible to easily obtain a configuration in which the guide members are pressed almost uniformly by the pressing member, When the working fluid is a liquid such as hydraulic pressure, an elastic member such as a coil spring, leaf spring, rubber, synthetic resin, or hollow body should be interposed between the working member and the guide member. More, it is possible to obtain a pressure which is resilient, when the working fluid is a gas such as compressed air,
In addition to the elastic member, there is an effect that a pressure with appropriate elasticity can be obtained by adjusting the gas pressure.

Further, according to the present invention, in the above-described inspection apparatus, the guide members are individually movably pressed against the transport member, and the individual guide members are pressurized by the fluid-filled elastic hollow body that applies a substantially uniform fluid pressure to the surroundings. Since the guide members which are individually movably pressed against the conveying member are pressurized by the fluid-filled elastic hollow body which applies substantially uniform fluid pressure to the surroundings by having a configuration characterized by being carried out, The member applies a substantially uniform pressing force to the conveying member, and the containers moving together with the conveying member are evenly pressed by the individual guide member portions, so that the individual containers can be subjected to the same inspection. In addition to the effect, it is possible to obtain a structure in which the individual guide members are simply and easily uniformly pressed by the fluid-filled elastic hollow body.

Further, according to the present invention, in the above-mentioned inspection apparatus, the guide member comprises a guide roller in which both ends are rotatably supported by bearing members connected adjacently in a chain-like manner. Are individually pressurized and supported by the elastic hollow bodies that exert substantially the same fluid pressure on the periphery, so that the bearing members of the adjacent guide rollers are flexibly connected in a chain shape. Therefore, there is a tendency that the guide rollers passing through the container are gently bent in the retreating direction including the front and rear thereof around the guide roller, and the bearing members are individually supported by pressure by the elastic hollow bodies with substantially the same pressing force. Therefore, there is an effect that the container moving with the conveying member can be pressed with substantially uniform and smooth pulsation. Further, the bearing member connected in a chain shape can be attached to the body by pulling both ends thereof, and can be stretched on the elastic hollow body so as to be straight in the transport direction of the transport member. The tubular bearing members and the two tubular elastic hollow bodies that press and support the bearing members have an effect that both ends of the guide roller can be bearing-supported in the transport direction of the transport member.

Further, according to the present invention, in the above-described inspection apparatus, as a fluid pressure member for pressurizing the individual guide members substantially uniformly, the individual guide members and the apparatus body are substantially arranged along the transport direction of the container. Since the elastic hollow body having the same fluid pressure is laid, the elastic hollow body having substantially the same fluid pressure is provided between the individual guide members and the device body along the transport direction of the container. By laying the body, there is an effect that it is possible to provide a fluid pressure member that presses the individual guide members almost uniformly with a simple structure.

Further, according to the present invention, in the inspection apparatus in the above-mentioned pressurizing step, a water removing device for removing water from the outer peripheral surface of the container being conveyed is provided in a preceding stage thereof. By providing a water removal device that removes water from the outer peripheral surface of the container being transported at the stage prior to the pressurizing step, when the outer peripheral surface of the container is pressurized and leaks a small amount of liquid, defects such as pinholes may occur. There is an effect that it is possible to clarify whether or not it is due to the above.

Further, according to the present invention, in the inspection apparatus in the above-described pressurizing step, an insulation inspection apparatus for bringing the container being transported into contact between the electrodes is provided at a subsequent stage. By providing an insulation inspection device that brings the container being transported into contact between the electrodes at the later stage of the pressure process, the loss of insulation between the electrodes is detected, and the leakage of the liquid from the container caused by the pressure process is reduced. There is an effect that can be easily found.

Further, the present invention relates to the above inspection apparatus,
A position where one of the electrodes in the insulation test device that connects the container being transported between the electrodes is connected to the transport member side of the container as an earth side electrode, and the other electrode can contact a part of the container being transported in the air. Since it has a configuration characterized by being provided in the case, if a small liquid leak occurs in the container due to pressurization,
In an insulation testing device that brings the container being transported into contact between the electrodes, as soon as the other electrode comes into contact with the wetted part of the outer peripheral surface of the container, electricity is supplied to the earth side electrode on the transport side of the container to instantly insulate the container. As a result, it is possible to detect a small liquid leak from the container, and since the transport member is the ground-side electrode, there is an effect that there is no leakage to the operator and the entire device, and that the safety is achieved.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view illustrating a process of one embodiment of the present invention.

FIG. 2 is a schematic front view of an embodiment of a liquid leakage inspection device according to the present invention.

FIG. 3 is a schematic plan view of a main part of the embodiment of FIG. 2;

FIG. 4 is a schematic side view showing a part of a main part of the embodiment of FIG.

FIG. 5 is a schematic front view showing a main part of the embodiment of FIG.

FIG. 6 is a schematic front view of an embodiment of the insulation test apparatus according to the present invention.

FIG. 7 is a schematic side view of the embodiment of FIG.

FIG. 8 is a schematic perspective view of one embodiment of a water removal device according to the present invention.

FIG. 9 is a schematic front view showing a part of a main part of the embodiment of FIG.

FIG. 10 is a schematic side view showing a main part of the embodiment of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container conveyance process 2 Container 3 Water removal device 4 Fine liquid leak inspection device 5 Insulation inspection device 6 Transport member 7 Machine stand 8, 9 Belt pulley 10 Drive motor 11 Transmission member 12 Guide member 13 Transport member 14 Elevator stand 15, 16 , 17 Belt pulley 19 Transmission member 20 Guide member 21, 22 Tension adjusting mechanism 23, 24 Belt pulley 26 Fixed foot 27 Caster 28 Support shaft 29 Fluid pressure cylinder 30 Bearing member 31, 32 Bearing piece 33 Spacer 34 Connecting shaft 35 Laying Member 36 fixing member 37 holding frame 38 opening 39 sheet member 40 elastic hollow body 41 supporting girder frame 42 support beam frame 43 mounting member 44 bearing frame 45 support shaft 46 container feed guide roller 47 carry-in conveyor 48 inspection conveyor 49 inspection conveyor 50, sorting conveyor 50, 51 electrode 52 mounting base 53 Attaching / detaching tool 54 Device power supply unit 55 Front cover body 56 Side cover body 57 Handle 58 Lower edge 59 Operating member 60 Body 61 Transfer member 62, 63 Belt pulley 64 Transmission belt 65 Drive motor 66, 67 Air discharge nozzle 68 Lifting prevention guide 69 Elevating operation handle 70 Operation panel 71 Blower motor 72 V belt 73 Blower 74 Side guide 75 Guide frame 76 Open / close door 77 Air adjustment cock

Claims (23)

[Claims] 1. A method for inspecting a container for leaking fine liquid having a pressurizing step of pressurizing a container being conveyed without stopping a conveying member for conveying the container to cause a fine liquid leak in a container having a micro leaking portion. And guiding the container and the transport member of the container to move between the guide members, and having a pressing step of applying a pressing force to the container moving between the guide members by pressing the guide member. For leaking very small liquids from containers. 2. The method according to claim 1, wherein the step of pressurizing the conveyed container comprises a step of pulsatingly pressurizing the container. 3. The method according to claim 1, further comprising a step of pulsatingly pressing the container by providing irregularities on the guide member. 4. The inspection method according to claim 1, 2 or 3, wherein the container is conveyed between two belts which move synchronously, and the belts as these conveying members are spherical or cylindrical rotating parts. A method of inspecting a container for microscopic liquid leakage, comprising the steps of: guiding a container being conveyed by guiding the container with a guide member having a guide roller, and pressing the guide roller with a pressing member. 5. The inspection method according to claim 1, wherein the guide members are individually movably pressed against the conveying member, and the individual guide members apply a substantially uniform fluid pressure to the surroundings. A method for inspecting leakage of minute liquid from a container, wherein the container is pressurized by an elastic hollow body. 6. A series of container transporting steps, comprising: a step of removing water from the transporting container, a step of pressurizing the transporting container, and a step of bringing the transporting container into contact with the electrodes. Liquid leak inspection method. 7. The inspection method according to claim 1, further comprising, as a preceding step, a step of removing water from the transported container with respect to the step of pressurizing the transported container. A method for inspecting a container for microscopic liquid leakage, the method further comprising a step of bringing the container being transported into contact between the electrodes as a subsequent step. 8. The inspection method according to claim 6, wherein one of the electrodes in the step of bringing the container being transported into contact between the electrodes is connected to the transport member side of the container as an earth-side electrode, and the other electrode is connected to the container. A method for inspecting a container for a small amount of liquid leakage, wherein the method is provided at a position where a part of the container being transported can be contacted in the air. 9. The inspection method according to claim 6, 7 or 8, wherein the electrode in the step of bringing the container being transported into contact between the electrodes is a high-voltage electrode that does not destroy the container. Small liquid leak inspection method. 10. In the step of pressurizing a container being transported, a guide member for guiding the container being transported and a transport member of the container therebetween is provided, and at least one of the guide members is pressurized. A small liquid leakage inspection device for containers that pressurizes the containers being transported. 11. The inspection apparatus according to claim 10, wherein the container being conveyed is pulsatedly pressurized via the guide member. 12. The inspection apparatus according to claim 11, wherein the container being conveyed is pulsatedly pressurized by providing irregularities on one of the guide members on one side, the other side or both sides. Inspection device for minute liquid leakage of containers. 13. The inspection device according to claim 12, wherein the guide member has irregularities due to adjacent rotating parts having a spherical shape, an elliptical shape, a parabolic shape, a hyperbolic shape, or a cylindrical shape, and pulsates the container. A device for inspecting leakage of minute liquid from a container, characterized by pressurization. 14. The method of claim 10, 11, 1,
In the inspection apparatus described in 2 or 13, the container is conveyed by being sandwiched between two belts that move synchronously, and the belt as a conveying member is guided by a guide member including a guide roller. A container micro-leakage inspection apparatus characterized in that the container being transported is pressurized by applying pressure. 15. The inspection device according to claim 14, wherein the container is conveyed by being sandwiched between two belts that move in synchronization, and a belt serving as a conveying member is guided by a guide member including the guide roller. A container micro-leakage inspection apparatus, wherein the container being transported is pressurized by pressing a guide roller that guides the one belt with a pressing member. 16. The container according to claim 15, wherein each of the guide rollers for guiding the one of the belts is pressed substantially uniformly with a pressing member to press the container being transported. A liquid leakage inspection device for containers. 17. The method of claim 10, 11, 1,
2. The inspection apparatus according to 2, 13, 14, 15 or 16, wherein the pressure member for pressing the container being transported is constituted by a fluid pressure member which is uniformly pressed against a guide member for guiding the transport member for transporting the container. Characteristic micro-leakage inspection equipment for containers. 18. The inspection apparatus according to claim 17, wherein the guide members are individually movably pressed against the transport member, and the individual guide members are pressurized by the fluid-filled elastic hollow bodies that apply substantially uniform fluid pressure to the surroundings. A device for inspecting a container for microscopic liquid leakage, which is characterized in that: 19. The inspection device according to claim 18, wherein each of the guide members comprises a guide roller whose both ends are rotatably supported by a bearing member which is continuous in a bendable manner in a chain shape. Are individually pressurized and supported by the elastic hollow bodies that apply substantially the same fluid pressure to the surroundings thereof. 20. The method according to claim 17, 18 or 1.
9. The inspection apparatus according to claim 9, wherein the fluid pressure member presses the individual guide members substantially uniformly, and has elasticity having substantially the same fluid pressure between the individual guide members and the apparatus body along the transport direction of the container. A device for inspecting a container for minute liquid leakage, wherein a hollow body is laid. 21. The inspection apparatus in the pressurizing step according to any one of claims 10 to 20, wherein a water removal device for removing water from an outer peripheral surface of the container being conveyed is provided in a preceding stage. A feature of this device is a micro-leakage inspection device for containers. 22. The inspection apparatus in the pressurizing step according to claim 10, further comprising an insulation inspection apparatus for bringing the container being transported into contact between the electrodes in a subsequent stage. A small liquid leak inspection device for containers. 23. The inspection apparatus according to claim 22, wherein one of the electrodes in the insulation inspection apparatus for contacting the container being transported between the electrodes is connected to the transport member side of the container as an earth-side electrode, and the other electrode. Is provided at a position where air can contact a part of the container being transported in the air.