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WO2001044791A2 - Apparatus for non-destructive inspection of cylindrical containers for liquid products - Google Patents

Apparatus for non-destructive inspection of cylindrical containers for liquid products Download PDF

Info

Publication number
WO2001044791A2
WO2001044791A2 PCT/EP2000/012217 EP0012217W WO0144791A2 WO 2001044791 A2 WO2001044791 A2 WO 2001044791A2 EP 0012217 W EP0012217 W EP 0012217W WO 0144791 A2 WO0144791 A2 WO 0144791A2
Authority
WO
WIPO (PCT)
Prior art keywords
containers
bottles
destructive inspection
ray
liquid products
Prior art date
Application number
PCT/EP2000/012217
Other languages
French (fr)
Inventor
Italia S.P.A. Dylog
Original Assignee
Pipino, Marco
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pipino, Marco filed Critical Pipino, Marco
Publication of WO2001044791A2 publication Critical patent/WO2001044791A2/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material

Definitions

  • the present invention relates to an apparatus for non- destructive inspection of cylindrical containers for liquid products. More particularly, the invention concerns an apparatus for X- ray inspection of cylindrical containers, such as glass bottles and vessels for liquid foodstuffs such as wines and other drinks.
  • Such apparatuses comprise suitable X-ray generators/ detectors and the relevant control circuitry. Inspection of foodstuffs containers is intended to detect the presence of possible contaminants within the container. Indeed, it is possible that during processing and bottling a particle or fragment of an alien substance, generally of higher specific weight than the liquid in which by chance it is present, becomes introduced inside the container.
  • cylindrical containers such as glass bottles for drinks often have an inward curved bottom defining an annular zone with closely spaced side walls, difficult to be inspected by X-ray units. Any glass fragment or other object with higher specific weight than the liquid will become deposited by gravity onto said annulus at the bottle bottom.
  • Different solutions to the problem of how to detect the presence of said fragments in a container with an inward curved bottom have been proposed in the past.
  • an X-ray inspection apparatus comprises a vertically developing device for transferring the containers or bottles, which device is arranged to upset the containers about an axis perpendicular to the advance direction, on a plane parallel to the advance direction.
  • the above device is provided with two half-circular curved sections separated by a rectilinear section along which the X-ray unit is located.
  • the first curved section of the device performs the bottle rotation by 180°, so as to present them in upset condition through the X-ray unit, whereas the second curved section brings again the bottles to the upright position.
  • a drawback of the device of the above patent is that the bottle is to be upset in order to be inspected, and this is time consuming. In other prior art devices, the bottles are shaken so that contaminants deposited on the bottom become suspended and their presence can be detected.
  • the apparatus comprises means for transferring the containers through the X-ray unit and arranged to bring the containers to an inclined position about the advance direction when said containers are being conveyed through said X- ray unit, while keeping a substantially rectilinear and horizontal advance direction.
  • the containers are inclined about the advance direction by an angle which is a function of the shape of their curved bottom and of the difference of specific weight between contaminants and the liquid being contained, so as to achieve a quick displacement of the contaminants towards a region more readily accessible by the X-ray unit, with a minimum inclination of the containers.
  • the known chain conveyors can be used as means for transferring the containers in inclined position through the X-ray unit.
  • chain conveyor An example of chain conveyor is disclosed in PCT patent application WO 99/ 15443 by FLEXLINK SYSTEMS AB.
  • the chain conveyor according to the teaching of said PCT application comprises a chain of articulately interconnected plane link members running on suitable guides.
  • FIG. 1 is a schematical side view of an inspection apparatus according to the invention
  • FIG. 1 is a plan view of the inspection apparatus shown in Fig. 1 ;
  • FIG. 3 is a perspective view of the inspection apparatus shown in Fig. 1 ;
  • - Fig. 4a is a schematical view showing the position of a bottle when entering the apparatus
  • - Fig. 4b is a schematical view showing the position taken by a bottle in the inspection apparatus during inspection.
  • inspection apparatus 1 comprises a plurality of supports 2 on which there is mounted a linear conveyor 10 consisting of two facing chain conveyors 11 , 12 with vertical plane. Thanks to the two chain conveyors, cylindrical containers 13 are conveyed in a rectilinear direction, parallel to ground. Said cylindrical containers 13 may be for instance, glass bottles having a bottom 13' curved towards the bottle inside and defining an annular region 13" where contaminants, if any, present within bottle 13 become deposited.
  • four supports 2 are provided, two of which support the end portions of conveyor 10 while the other two support the central portion of conveyor 10. If however the conveyor length makes it necessary, the conveyor can be supported by a greater number of supports.
  • Each of the two chain conveyors 1 1, 12 comprises a chain 14, consisting of a plurality of articulately interconnected plane links, made of a material suitable for laterally holding glass bottles 13 during conveyance.
  • Each chain conveyor 11, 12 is driven by a driving unit 16 including a motor reducer.
  • chain conveyors 1 1 , 12 are each arranged with vertical plane so as to take and release bottles 13 in upright position.
  • central portion 10' is provided where chain conveyors 11, 12 follow a twisted path so as to take an inclined position while remaining parallel with each other, the conveyors resuming the vertical position while following the inverse path.
  • central supports 2 are so constructed as to allow supporting chain conveyors 11 , 12 located at different heights.
  • bottles 13 pass from the upright position to the inclined position.
  • the X-ray unit comprising at least one emitter 18 and at least one detector 19 for inspection of the contents of bottles 13, is located in correspondence with the twisted conveyor portion in order to inspect the bottles while in inclined position.
  • Contaminants, if any, deposited on the annular bottom 13" of bottles 13 are thus displaced by gravity towards region A that is more readily accessible by the X-ray unit.
  • a guide 15 keeping separate the two runs of chain 14 is schematically shown for each chain conveyor 1 1 and 12.
  • emitter 18 and detector 19 of the X- ray unit are arranged in dependence of the inclination taken by bottles 13, so as to emit radiation in the direction entailing minimum interference by the glass bottom and walls of bottles 13.
  • bottle 13 is inclined for inspection by an angle ⁇ of about 80°.
  • the inclination to be given to the bottle will be in the range 90° ⁇ 10°; yet, by exploiting the same inventive principle, conveyor capable of conferring an inclination by an angle in the range 0° to 180° can be provided.
  • the twisted paths of chain conveyors 1 1 , 12 will entail upsetting the running plane thereof by an angle of 180° and, consequently, the exchange of the mutual positions of chain conveyors 11, 12.
  • the inclination to be given to bottles 13 is predetermined depending on the shape of bottom 13' thereof and the specific weight difference between the contaminant and the liquid in the bottle, so as to obtain a quick displacement of contaminants from annular region 13" to region A by giving the bottles an inclination as small as possible.
  • emitter 18 and detector 19 could be modified depending on the inclination given to the bottles, so as to inspect a bottle region, other than region A, where contaminants, if any, will become deposited depending on the inclination.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

Apparatus for non-destructive X-ray inspection of cylindrical containers (13) for liquid products, comprising means (10) for transferring said cylindrical containers along a substantially rectilinear direction, whereby said containers (13) are made to take an inclined position about the advance direction when said containers (13) are being conveyed through the X-ray unit.

Description

APPARATUS FOR NON-DESTRUCTIVE INSPECTION OF CYLINDRICAL CONTAINERS FOR LIQUID PRODUCTS
The present invention relates to an apparatus for non- destructive inspection of cylindrical containers for liquid products. More particularly, the invention concerns an apparatus for X- ray inspection of cylindrical containers, such as glass bottles and vessels for liquid foodstuffs such as wines and other drinks.
It is known that non-destructive X-ray inspection of containers for liquid products is carried out by stationary inspection apparatuses within which the containers to be inspected are conveyed on a conveyor belt with horizontal plane.
Such apparatuses comprise suitable X-ray generators/ detectors and the relevant control circuitry. Inspection of foodstuffs containers is intended to detect the presence of possible contaminants within the container. Indeed, it is possible that during processing and bottling a particle or fragment of an alien substance, generally of higher specific weight than the liquid in which by chance it is present, becomes introduced inside the container.
Since glass bottles are concerned, such an alien substance might be a glass fragment detached from the container edge, for instance during the corking step.
It is also known that cylindrical containers such as glass bottles for drinks often have an inward curved bottom defining an annular zone with closely spaced side walls, difficult to be inspected by X-ray units. Any glass fragment or other object with higher specific weight than the liquid will become deposited by gravity onto said annulus at the bottle bottom. Different solutions to the problem of how to detect the presence of said fragments in a container with an inward curved bottom have been proposed in the past.
A first solution is disclosed in Italian Patent No. IT 1291498 in the name of the same applicant.
According to the teaching of said Italian patent an X-ray inspection apparatus comprises a vertically developing device for transferring the containers or bottles, which device is arranged to upset the containers about an axis perpendicular to the advance direction, on a plane parallel to the advance direction.
The above device is provided with two half-circular curved sections separated by a rectilinear section along which the X-ray unit is located. The first curved section of the device performs the bottle rotation by 180°, so as to present them in upset condition through the X-ray unit, whereas the second curved section brings again the bottles to the upright position. Thus, contaminants falling down by gravity toward the bottle cork while the bottle is being upset can be inspected without any interference due to the shape of the bottle bottom.
A drawback of the device of the above patent is that the bottle is to be upset in order to be inspected, and this is time consuming. In other prior art devices, the bottles are shaken so that contaminants deposited on the bottom become suspended and their presence can be detected.
Also this method however is slow and inaccurate, and it cannot be used in connection with drinks for which shaking is not convenient.
Therefore it is an object of the present invention to remedy the above drawbacks, by providing an apparatus for the quick and secure inspection of glass containers having a curved bottom.
The above and other objects are achieved by the present invention, which concerns an apparatus for the non-destructive X- ray inspection of containers for liquid products, such as glass vessels or bottles, as claimed in the appended claims.
The apparatus according to the invention comprises means for transferring the containers through the X-ray unit and arranged to bring the containers to an inclined position about the advance direction when said containers are being conveyed through said X- ray unit, while keeping a substantially rectilinear and horizontal advance direction.
Advantageously, the containers are inclined about the advance direction by an angle which is a function of the shape of their curved bottom and of the difference of specific weight between contaminants and the liquid being contained, so as to achieve a quick displacement of the contaminants towards a region more readily accessible by the X-ray unit, with a minimum inclination of the containers. The known chain conveyors can be used as means for transferring the containers in inclined position through the X-ray unit.
An example of chain conveyor is disclosed in PCT patent application WO 99/ 15443 by FLEXLINK SYSTEMS AB. The chain conveyor according to the teaching of said PCT application comprises a chain of articulately interconnected plane link members running on suitable guides.
The invention will now be described with reference to the accompanying drawings, relating to a preferred but not limiting embodiment thereof, and in which:
- Fig. 1 is a schematical side view of an inspection apparatus according to the invention;
- Fig. 2 is a plan view of the inspection apparatus shown in Fig. 1 ;
- Fig. 3 is a perspective view of the inspection apparatus shown in Fig. 1 ;
- Fig. 4a is a schematical view showing the position of a bottle when entering the apparatus; - Fig. 4b is a schematical view showing the position taken by a bottle in the inspection apparatus during inspection.
With reference to Figs. 1 to 3, inspection apparatus 1 according to the invention comprises a plurality of supports 2 on which there is mounted a linear conveyor 10 consisting of two facing chain conveyors 11 , 12 with vertical plane. Thanks to the two chain conveyors, cylindrical containers 13 are conveyed in a rectilinear direction, parallel to ground. Said cylindrical containers 13 may be for instance, glass bottles having a bottom 13' curved towards the bottle inside and defining an annular region 13" where contaminants, if any, present within bottle 13 become deposited.
In the preferred embodiment of the invention, four supports 2 are provided, two of which support the end portions of conveyor 10 while the other two support the central portion of conveyor 10. If however the conveyor length makes it necessary, the conveyor can be supported by a greater number of supports.
Each of the two chain conveyors 1 1, 12 comprises a chain 14, consisting of a plurality of articulately interconnected plane links, made of a material suitable for laterally holding glass bottles 13 during conveyance. Each chain conveyor 11, 12 is driven by a driving unit 16 including a motor reducer.
At both ends of conveyor 10, chain conveyors 1 1 , 12 are each arranged with vertical plane so as to take and release bottles 13 in upright position.
Between the two intermediate supports of conveyor 10, a central portion 10' is provided where chain conveyors 11, 12 follow a twisted path so as to take an inclined position while remaining parallel with each other, the conveyors resuming the vertical position while following the inverse path. In this respect, central supports 2 are so constructed as to allow supporting chain conveyors 11 , 12 located at different heights.
During said twisted path, bottles 13 pass from the upright position to the inclined position.
Advantageously, the X-ray unit, comprising at least one emitter 18 and at least one detector 19 for inspection of the contents of bottles 13, is located in correspondence with the twisted conveyor portion in order to inspect the bottles while in inclined position.
Contaminants, if any, deposited on the annular bottom 13" of bottles 13 are thus displaced by gravity towards region A that is more readily accessible by the X-ray unit.
With reference to Figs. 4a and 4b, a guide 15 keeping separate the two runs of chain 14 is schematically shown for each chain conveyor 1 1 and 12.
With reference to Fig. 4b, emitter 18 and detector 19 of the X- ray unit are arranged in dependence of the inclination taken by bottles 13, so as to emit radiation in the direction entailing minimum interference by the glass bottom and walls of bottles 13.
In the exemplary embodiment shown in Fig. 4b, bottle 13 is inclined for inspection by an angle α of about 80°. Preferably, according to the invention, the inclination to be given to the bottle will be in the range 90° ± 10°; yet, by exploiting the same inventive principle, conveyor capable of conferring an inclination by an angle in the range 0° to 180° can be provided.
If an upset of bottles 13 is desired, the twisted paths of chain conveyors 1 1 , 12 will entail upsetting the running plane thereof by an angle of 180° and, consequently, the exchange of the mutual positions of chain conveyors 11, 12.
The inclination to be given to bottles 13 is predetermined depending on the shape of bottom 13' thereof and the specific weight difference between the contaminant and the liquid in the bottle, so as to obtain a quick displacement of contaminants from annular region 13" to region A by giving the bottles an inclination as small as possible.
Of course the positions of emitter 18 and detector 19 could be modified depending on the inclination given to the bottles, so as to inspect a bottle region, other than region A, where contaminants, if any, will become deposited depending on the inclination.

Claims

Patent claims
1. Apparatus for non-destructive X-ray inspection of cylindrical containers (13) for liquid products, comprising means (10) for transferring said cylindrical containers (13) along a substantially rectilinear direction through an X-ray unit, characterised in that said means (10) are arranged to make said containers (13) take a position inclined about the advance direction when said containers (13) are being conveyed through said X-ray unit.
2. Apparatus for non-destructive inspection according to claim 1 , characterised in that said transferring means (10) comprise a pair of chain conveyors (1 1 , 12) travelling parallel to each other along a twisted path such that the containers (13) held between said conveyors take a position inclined by an angle in the range 0° to 180°.
3. Apparatus for non-destructive inspection according to claim 2, characterised in that said angle is an angle of 90°±10°.
4. Apparatus for non-destructive inspection according to any preceding claim, characterised in that said X-ray unit has at least one emitter (18) and at least one detector (19), so arranged relative to the containers (13) that at least the portion of said containers is inspected where contaminants, if any, present in the containers (13) become deposited due to gravity and the inclination taken by the containers (13).
PCT/EP2000/012217 1999-12-16 2000-12-01 Apparatus for non-destructive inspection of cylindrical containers for liquid products WO2001044791A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999TO001105A IT1311319B1 (en) 1999-12-16 1999-12-16 MACHINE FOR NON-DESTRUCTIVE INSPECTION OF CYLINDRICAL CONTAINERS FOR LIQUID PRODUCTS.
ITTO99A00110519991216 1999-12-16

Publications (1)

Publication Number Publication Date
WO2001044791A2 true WO2001044791A2 (en) 2001-06-21

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WO (1) WO2001044791A2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004044567A1 (en) * 2002-11-12 2004-05-27 Heuft Systemtechnik Gmbh Device for examining filled containers using obliquely emitted x-rays
GB2430601A (en) * 2005-09-22 2007-03-28 Nuctech Co Ltd Fan shaped ray beam guide
EP1811289A2 (en) * 2006-01-19 2007-07-25 Khs Ag Method and apparatus for the inspection of bottles or similar containers
DE102006048327A1 (en) * 2006-10-06 2008-04-10 Stratec Control-Systems Gmbh Optical image acquisition of foreign materials in bottles filled with liquid, involves analyzing upside-down bottle while neck portion or opening of bottle is transverse to longitudinal axis of bottle with X-ray during analysis of bottle
WO2008058658A2 (en) * 2006-11-15 2008-05-22 Khs Ag Method for the inspection or monitoring of bottles or similar containers, and device for the inspection of bottles or similar containers
WO2010086636A3 (en) * 2009-01-27 2010-11-25 Durham Scientific Crystals Limited Prescan of an object with the object in motion and subsequent localized scan of the object with the object at rest
EP3239697A1 (en) 2016-04-28 2017-11-01 Stratec Control-Systems GmbH Method and device for detecting foreign matter in containers
CN110031473A (en) * 2019-03-21 2019-07-19 河北博柯莱智能装备科技股份有限公司 Bottle automatic lamp-checking system
CN117434075A (en) * 2023-12-05 2024-01-23 安徽凤阳淮河玻璃有限公司 Glass product defect detection system

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7106827B2 (en) 2002-11-12 2006-09-12 Heuft Systemtechnik Gmbh Device for examining filled containers by means of X-rays and use of this device
WO2004044567A1 (en) * 2002-11-12 2004-05-27 Heuft Systemtechnik Gmbh Device for examining filled containers using obliquely emitted x-rays
GB2430601B (en) * 2005-09-22 2009-05-27 Nuctech Co Ltd Ray beam guilding apparatus and ray inspection system having the same
GB2430601A (en) * 2005-09-22 2007-03-28 Nuctech Co Ltd Fan shaped ray beam guide
US7574845B2 (en) 2006-01-19 2009-08-18 Khs Maschinen- Und Anlagenbau Ag Beverage bottling plant for filling beverage bottles having a bottle handling station and a method of operation thereof
EP1811289A2 (en) * 2006-01-19 2007-07-25 Khs Ag Method and apparatus for the inspection of bottles or similar containers
EP1811289A3 (en) * 2006-01-19 2007-08-22 Khs Ag Method and apparatus for the inspection of bottles or similar containers
DE102006002633B4 (en) * 2006-01-19 2009-08-20 Khs Ag Method and device for inspecting bottles or the like. Containers
DE102006002633A1 (en) * 2006-01-19 2007-07-26 Khs Ag Method and device for inspecting bottles or the like. Containers
DE102006048327A1 (en) * 2006-10-06 2008-04-10 Stratec Control-Systems Gmbh Optical image acquisition of foreign materials in bottles filled with liquid, involves analyzing upside-down bottle while neck portion or opening of bottle is transverse to longitudinal axis of bottle with X-ray during analysis of bottle
CN102608128A (en) * 2006-11-15 2012-07-25 Khs有限责任公司 Device for checking bottles or similar vessels
WO2008058658A3 (en) * 2006-11-15 2008-10-23 Khs Ag Method for the inspection or monitoring of bottles or similar containers, and device for the inspection of bottles or similar containers
WO2008058658A2 (en) * 2006-11-15 2008-05-22 Khs Ag Method for the inspection or monitoring of bottles or similar containers, and device for the inspection of bottles or similar containers
US8405826B2 (en) 2006-11-15 2013-03-26 Khs Gmbh Method for the inspection of bottles or containers in a bottling or container filling plant and an apparatus for the inspection of bottles or containers
CN102608128B (en) * 2006-11-15 2015-08-26 Khs有限责任公司 For checking the equipment of bottle or similar containers
WO2010086636A3 (en) * 2009-01-27 2010-11-25 Durham Scientific Crystals Limited Prescan of an object with the object in motion and subsequent localized scan of the object with the object at rest
US9086495B2 (en) 2009-01-27 2015-07-21 Kromek Limited Object scanning protocol
EP3239697A1 (en) 2016-04-28 2017-11-01 Stratec Control-Systems GmbH Method and device for detecting foreign matter in containers
CN110031473A (en) * 2019-03-21 2019-07-19 河北博柯莱智能装备科技股份有限公司 Bottle automatic lamp-checking system
CN117434075A (en) * 2023-12-05 2024-01-23 安徽凤阳淮河玻璃有限公司 Glass product defect detection system
CN117434075B (en) * 2023-12-05 2024-04-19 安徽凤阳淮河玻璃有限公司 Glass product defect detection system

Also Published As

Publication number Publication date
IT1311319B1 (en) 2002-03-12
ITTO991105A1 (en) 2001-06-16
ITTO991105A0 (en) 1999-12-16

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