WO1997038299A1 - Dispositif de controle optique - Google Patents
Dispositif de controle optique Download PDFInfo
- Publication number
- WO1997038299A1 WO1997038299A1 PCT/FR1997/000600 FR9700600W WO9738299A1 WO 1997038299 A1 WO1997038299 A1 WO 1997038299A1 FR 9700600 W FR9700600 W FR 9700600W WO 9738299 A1 WO9738299 A1 WO 9738299A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- control
- glass
- container
- bottle
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
Definitions
- the invention relates to a device for the optical control of objects, and more particularly of glass objects, such as bottles, flasks, etc.
- Such control devices make it possible in particular to decide on the acceptance or rejection of articles. They also make it possible to monitor the general level of quality of the articles manufactured, in particular by dimensional checks and especially aspect checks; these revealing the surface condition and possible internal faults.
- Such controls require an illumination and a shot on either side of the bottom of the container.
- This control can be done either statically, or while the container is scrolling on a conveyor.
- it is necessary to provide an interruption in the plane of the conveyor which is for example a carpet, to allow the electromagnetic control radiation to pass between the bottom of the container and the light source and / or the receiver.
- the conveyor has a window or slot in its conveying plane above which the container must pass, so that an image of the bottom can be observed.
- Different difficulties then arise; first of all, it seems impossible to observe the entire bottom of a container. Indeed, such an operation requires an opening in the conveying plane at least equal to the dimension of the bottom of the container to be checked and preferably greater.
- the European patent application published under No. 487 402 proposes a temporary interruption of the conveyor, the container then being supported by two lateral bands.
- the bands are animated so as to support and convey the container above the area where the conveyor is interrupted.
- At the interruption of the conveyor there is a control device capable of observing the entire bottom of the container.
- such a device has some drawbacks; first of all, it is relatively bulky, but the locations at which such checks are necessary do not always have enough space to install it.
- the container is held between the ban ⁇ es, it is not very stable and its vertical axis cannot be confused permanently with that of the objective which must capture the image of the background.
- the object of the invention is therefore to provide an optical device for controlling objects, in particular authorizing control of the entire bottom of a container, whatever the size thereof, while eliminating any risk of breakage of said container due to this. control.
- an optical object control device consisting of at least one receiver and / or one transmitter, comprising a window transparent to electromagnetic control radiation, the window being closed by a substrate transparent to electromagnetic control radiation and said substrate having an outer face having a scratch resistance greater than that of glass.
- the device In the case of checking the bottom of a glass container, the device is for example inserted in the plane of the conveyor, during the control phase the container is thus supported by the substrate on which it slides without risk of degrading it. , its scratch resistance being greater than that of glass.
- the control of said bottom can be carried out completely, the trajectory of the container not being disturbed.
- the external face of the substrate is that in contact with which the bottom of the container is located during the control.
- the scratch resistance of the substrate is between 7 and 10 on the Mohs scale.
- the substrate is a block, such as a plate or a lens, cut from the mass of a crystal such as a sapphire, ruby, artificial or natural diamond crystal, etc.
- the substrate is an assembly of blocks, such as plates, glued, said blocks being cut from the mass of crystals such as sapphire, ruby, artificial or natural diamond crystals, etc.
- second variant makes it possible to use thinner blocks than in the first variant, the resistance of the assembly being equivalent, the adhesive used advantageously has a refractive index equivalent to that of the crystal.
- the invention advantageously provides for associating by bonding the substrate obtained according to either of the first two variants, with a material transparent to electromagnetic radiation control.
- This material is for example a glass plate and the adhesive advantageously has a refractive index close to that of crystal and / or glass.
- the substrate is a block, such as a plate or a lens of a material transparent to electromagnetic control radiation, said material comprising on its outer face a thin layer having a resistance to scratching. greater than 7 on the Mohs scale and itself transparent to electromagnetic control radiation.
- the thin layer is a DLC (Diamond Like Carbon) layer obtained by CVD (Chemical Vapor Deposition).
- the device thus described according to the invention can therefore be used for checking the bottom of a glass container, said device forming an element of the conveying plane, and more precisely the face of the substrate having a scratch resistance greater than that of glass. constituting said element of the conveying plane.
- Such a device thus avoids any risk of falling and / or breaking of the containers passing over the opening made in the plane of the conveyor.
- the dimensions of the substrate can be chosen to be greater than those of the bottom of the container and allow control of the entire bottom.
- Such a device also has the advantage for this application of protecting the transmitter or the receiver placed under the conveying plane from any element, such as pieces of glass which may be on the conveyor and which in the case of a slit or window that is not closed, that is to say according to prior techniques, could fall on said device and damage it.
- Such a device can be used in other applications always relating to the control of objects and more particularly of glass objects.
- the device according to the invention is also very advantageous for such a application ; it in fact makes it possible to close said window, the vertical guide then being able to better fulfill its function.
- closing the window also makes it possible to protect the emitter and / or the receiver from projection of pieces of glass or quite simply from glass dust. It appears in fact that the objectives used in the glass container inspection industry are often degraded either by the appearance of scratches, or due to their breakage.
- the invention also relates to the production of objective lenses with blocks as described above.
- FIGS. 1 and 2 represent:
- O Figure 1 a diagram of a control device according to a prior technique
- D Figure 2 a diagram of a device according to the invention.
- FIG. 1 illustrates a technique of the prior art previously described. This technique is that taught in particular by European patent application 487 402.
- a bottle 1 is shown which is initially conveyed by a conveyor belt 2.
- the bottle 1 is thus transported in the direction indicated by the arrows 3 up to 'at the end of the mat 2 from which the bottle 1 is supported by bands 4.
- These bands are animated by a movement indicated by the arrows 5, which allows continue to transport the bottle 1 in the direction of the arrows 3.
- the bottle 1 passes between a light source 6 and a receiver 7 intended to control the bottom 8 of the bottle 1.
- FIG. 2 is illustrated a diagram of a device according to the invention.
- the same bottle 1 as in FIG. 1 undergoes an optical control of its bottom between a light source 6 and a receiver 7 identical to those of FIG. 1.
- a sliding plate 1 0 on which the bottles slide in the direction of arrow 3 driven by any type of dynamic means known to those skilled in the art.
- an opening 1 1 in the sliding plate 1 At the bottom control zone 8 of the bottle 1 is provided an opening 1 1 in the sliding plate 1 0, said opening 1 1 having dimensions greater than those of the bottom of the bottle 1.
- This opening 1 1 is closed by a substrate 1 2 which in the present case is a plate cut in the mass of a sapphire crystal.
- the control device according to the invention therefore consists of the receiver 7 and the plate 12 which is inserted into the sliding plate 10 at the level of the control zone.
- this plate 1 2 provides protection to the receiver 7 with regard, for example, to glass debris resulting from the breaking of bottles which could have been transported by the sliding plate 1 0 to this point.
- the conveyor 1 0 is in this figure 2 simply shown diagrammatically by a horizontal plane comprising an opening; it can be all types of conveyors such as chain vane conveyors, conveyor belt type, etc. Such conveyors can be interrupted as in the case of FIG. 1 or simply have an opening 1 1.
- the passage of the bottle 1 on the plate 1 2 is carried out by sliding, the driving of the bottle 1 on the plate 1 2 being carried out by all types of means known to those skilled in the art, for example by simple pushing of the made of the queue of bottles, or by drive wheels comprising cells or any other means of mechanical thrust.
- the device thus described according to the invention therefore makes it possible to obtain control of the entire surface of the bottom of the bottle 1, without risk of breakage of the bottle 1 or of degradation of the receiver 7.
- the nature of the plate 1 2 which has a scratch resistance greater than that of glass makes it possible to maintain a satisfactory surface condition of the plate 1 2 which contributes to the good control of the bottles 1, the quality of the image obtained not being diminished for example by made of the presence of scratches which could have been due to the sliding of the bottles 1 on the plate 1 2.
Landscapes
- 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)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Surface Treatment Of Glass (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU23932/97A AU2393297A (en) | 1996-04-04 | 1997-04-03 | Optical monitoring device |
JP9535908A JPH11507139A (ja) | 1996-04-04 | 1997-04-03 | 光学検査装置 |
EP97919474A EP0830588A1 (fr) | 1996-04-04 | 1997-04-03 | Dispositif de controle optique |
MX9709478A MX9709478A (es) | 1996-04-04 | 1997-04-03 | Dispositivo de control optico. |
BR9706579A BR9706579A (pt) | 1996-04-04 | 1997-04-03 | Dispositivo de controle ótico de objetivos e utilização do mesmo |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9604232A FR2747191A1 (fr) | 1996-04-04 | 1996-04-04 | Dispositif de controle optique |
FR96/04232 | 1996-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997038299A1 true WO1997038299A1 (fr) | 1997-10-16 |
Family
ID=9490903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1997/000600 WO1997038299A1 (fr) | 1996-04-04 | 1997-04-03 | Dispositif de controle optique |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0830588A1 (fr) |
JP (1) | JPH11507139A (fr) |
AU (1) | AU2393297A (fr) |
BR (1) | BR9706579A (fr) |
CA (1) | CA2223264A1 (fr) |
FR (1) | FR2747191A1 (fr) |
MX (1) | MX9709478A (fr) |
WO (1) | WO1997038299A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3840005A1 (de) * | 1988-11-26 | 1990-05-31 | Komi Koppelberg & Migl Kg Masc | Verfahren und einrichtung zum pruefen von hohlglaskoerpern auf enthaltene einschluesse |
WO1992005951A1 (fr) * | 1990-09-27 | 1992-04-16 | Diamonex, Incorporated | Produit de substrat recouvert presentant une resistance a l'usure par abrasion |
EP0487402A1 (fr) * | 1990-11-20 | 1992-05-27 | Saint-Gobain Cinematique Et Controle | Contrôle optique au vol |
-
1996
- 1996-04-04 FR FR9604232A patent/FR2747191A1/fr active Pending
-
1997
- 1997-04-03 JP JP9535908A patent/JPH11507139A/ja active Pending
- 1997-04-03 EP EP97919474A patent/EP0830588A1/fr not_active Withdrawn
- 1997-04-03 AU AU23932/97A patent/AU2393297A/en not_active Abandoned
- 1997-04-03 WO PCT/FR1997/000600 patent/WO1997038299A1/fr not_active Application Discontinuation
- 1997-04-03 BR BR9706579A patent/BR9706579A/pt not_active Application Discontinuation
- 1997-04-03 CA CA 2223264 patent/CA2223264A1/fr not_active Abandoned
- 1997-04-03 MX MX9709478A patent/MX9709478A/es unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3840005A1 (de) * | 1988-11-26 | 1990-05-31 | Komi Koppelberg & Migl Kg Masc | Verfahren und einrichtung zum pruefen von hohlglaskoerpern auf enthaltene einschluesse |
WO1992005951A1 (fr) * | 1990-09-27 | 1992-04-16 | Diamonex, Incorporated | Produit de substrat recouvert presentant une resistance a l'usure par abrasion |
EP0487402A1 (fr) * | 1990-11-20 | 1992-05-27 | Saint-Gobain Cinematique Et Controle | Contrôle optique au vol |
Also Published As
Publication number | Publication date |
---|---|
JPH11507139A (ja) | 1999-06-22 |
AU2393297A (en) | 1997-10-29 |
FR2747191A1 (fr) | 1997-10-10 |
EP0830588A1 (fr) | 1998-03-25 |
CA2223264A1 (fr) | 1997-10-16 |
MX9709478A (es) | 1998-02-28 |
BR9706579A (pt) | 1999-07-20 |
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